Commit Graph

2815 Commits

Author SHA1 Message Date
Greg Kroah-Hartman
98c4514ff6 Merge 3.7-rc6 into char-misc-next 2012-11-16 18:21:36 -08:00
Wei WANG
2c94b6452c drivers/mmc: Add realtek pcie sdmmc host driver
Realtek PCI-E SD/MMC card host driver is used to access SD/MMC card,
with the help of Realtek PCI-E card reader MFD driver.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-15 17:30:14 -08:00
Jiri Slaby
e70c67713c MMC: sdio, use kref from tty_port
After commit "TTY: move tty buffers to tty_port", the tty buffers are
not freed in some drivers. This is because tty_port_destructor is not
called whenever a tty_port is freed. This was an assumption I counted
with but was unfortunately untrue. So fix the drivers to fulfil this
assumption.

Here it is enough to switch to refcounting in tty_port.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-15 17:20:57 -08:00
Jiri Slaby
9753eb8de8 MMC: sdio_uart, remove unused member from sdio_uart_port
tty from struct sdio_uart_port is unused. Proper refcounted tty in
tty_port->tty is used instead. So remove the member from that
structure.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-15 17:20:57 -08:00
Arnd Bergmann
9265c6a186 Merge branch 'omap/headers4' into next/cleanup 2012-11-15 17:06:24 +01:00
Arnd Bergmann
b5932cc839 Merge branch 'cleanups/dma' into next/cleanup
Separate patches from Marek Szyprowski <m.szyprowski@samsung.com>:

Commit e9da6e9905 ("ARM: dma-mapping: remove custom consistent dma
region") replaced custom consistent memory handling, so setting
consistent dma memory size is not longer required. This patch series
cleans sub-architecture platform code to remove all calls to the
obsolated init_consistent_dma_size() function and finally removes the
init_consistent_dma_size() stub itself.

* cleanups/dma:
  ARM: at91: remove obsoleted init_consistent_dma_size()
  ARM: u300: remove obsoleted init_consistent_dma_size()
  ARM: dma-mapping: remove init_consistent_dma_size() stub
  ARM: shmobile: remove obsoleted init_consistent_dma_size()
  ARM: davinci: remove obsoleted init_consistent_dma_size()
  ARM: samsung: remove obsoleted init_consistent_dma_size()

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-11-13 10:14:38 +01:00
Arnd Bergmann
8a6ff8a0a2 arm: at91: mach header cleanup
This first patch serie start the cleanup of the header in mach
 by moving all the platform data to include/linux/platform_data
 
 and move the board header and drivers header next to them
 
 Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
 Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
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Merge tag 'for-3.8-at91_header_clean' of git://github.com/at91linux/linux-at91 into next/headers

From Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>:
arm: at91: mach header cleanup

This first patch serie start the cleanup of the header in mach
by moving all the platform data to include/linux/platform_data

and move the board header and drivers header next to them

* tag 'for-3.8-at91_header_clean' of git://github.com/at91linux/linux-at91:
  arm: at91: move at91rm9200 rtc header in drivers/rtc
  arm: at91: move reset controller header to arm/arm/mach-at91
  arm: at91: move pit define to the driver
  arm: at91: move at91_shdwc.h to arch/arm/mach-at91
  arm: at91: move board header to arch/arm/mach-at91
  arn: at91: move at91_tc.h to arch/arm/mach-at91
  arm: at91 move at91_aic.h to arch/arm/mach-at91
  arm: at91 move board.h to arch/arm/mach-at91
  arm: at91: move platfarm_data to include/linux/platform_data/atmel.h
  arm: at91: drop machine defconfig

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-11-12 22:54:08 +01:00
Wei WANG
ff984e57d3 mmc: Add realtek pcie sdmmc host driver
Realtek PCI-E SD/MMC card host driver is used to access SD/MMC card,
with the help of Realtek PCI-E card reader MFD driver.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-08 10:35:17 +01:00
Seungwon Jeon
0aa55c2367 mmc: sdhci-s3c: fix the card detection in runtime-pm
If host clock is disabled, host cannot detect a card in case of using
CD internal for detection.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:40:52 -05:00
Thomas Abraham
0f310a057f mmc: sdhci-s3c: use clk_prepare_enable and clk_disable_unprepare
Convert clk_enable/clk_disable to clk_prepare_enable/clk_disable_unprepare
calls as required by common clock framework.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:02:56 -05:00
Arnd Bergmann
8e2b36ea6e mmc: dw_mmc: constify dw_mci_idmac_ops in exynos back-end
The of_device_id match data is now marked as const and
must not be modified. This changes the dw_mmc to mark
all pointers passing the dw_mci_drv_data or dw_mci_dma_ops
structures as const, and also marks the static definitions
as const.

drivers/mmc/host/dw_mmc-exynos.c: In function 'dw_mci_exynos_probe':
drivers/mmc/host/dw_mmc-exynos.c:234:11: warning: assignment discards 'const' qualifier from pointer target type [enabled by default]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Abraham <thomas.abraham@linaro.org>
Cc: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:02:55 -05:00
Arnd Bergmann
517cb9f1bb mmc: dw_mmc: fix modular build for exynos back-end
The MODULE_DEVICE_TABLE entry for dw_mci_exynos_match
was incorrectly copied from the platform back-end, which
causes this error when building the driver as a loadable
module:

drivers/mmc/host/dw_mmc-exynos.c: At top level:
drivers/mmc/host/dw_mmc-exynos.c:226:34: error: '__mod_of_device_table' aliased to undefined symbol 'dw_mci_pltfm_match'

This patch fixes the problem by just using the correct
string.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Abraham <thomas.abraham@linaro.org>
Cc: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:02:55 -05:00
Chris Ball
14efd95720 mmc: sdhci: fix NULL dereference in sdhci_request() tuning
Commit 473b095a72 ("mmc: sdhci: fix incorrect command used in tuning")
introduced a NULL dereference at resume-time if an SD 3.0 host controller
raises the SDHCI_NEEDS_TUNING flag while no card is inserted.  Seen on an
OLPC XO-4 with sdhci-pxav3, but presumably affects other controllers too.

Signed-off-by: Chris Ball <cjb@laptop.org>
Cc: stable <stable@vger.kernel.org> [3.3+]
2012-11-07 15:02:05 -05:00
Kevin Liu
657d59823c mmc: sdhci: fix IS_ERR() checking of regulator_get()
There are two problems here:

The check for vmmc was printing an unnecessary pr_info() when
host->vmmc is NULL.

The intent of the check for vqmmc was to only remove UHS if we have a
regulator that doesn't support the required voltage, but since IS_ERR()
doesn't catch NULL, we were actually removing UHS modes if vqmmc isn't
present at all -- since it isn't present for most users, this breaks
UHS for them.  This patch fixes that UHS regression in 3.7-rc1.

Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Bin Wang <binw@marvell.com>
Reviewed-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:02:04 -05:00
Russell King - ARM Linux
ee3298a2b6 mmc: fix sdhci-dove probe/removal
1. Never ever publish a device in the system before it has been setup
   to a usable state.
2. Unregister the device _BEFORE_ taking away any resources it may be
   using.
3. Don't check clks against NULL.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:02:03 -05:00
Guennadi Liakhovetski
a0d28ba01e mmc: sh_mmcif: fix use after free
A recent commit "mmc: sh_mmcif: fix clock management" has introduced a
use after free bug in sh_mmcif.c: in sh_mmcif_remove() the call to
mmc_free_host() frees private driver data, therefore using it afterwards
is a bug. Revert that hunk.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: stable@vger.kernel.org [3.6]
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:02:02 -05:00
Adrian Hunter
90b3e6c53b mmc: sdhci-pci: fix 'Invalid iomem size' error message condition
The SDHCI standard defines a 256 byte register set but a device
that specifies a larger iomem region is not an error.  Alter the
message condition accordingly.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:02:01 -05:00
Fabio Estevam
6eb30adf96 mmc: mxcmmc: Fix MODULE_ALIAS
The correct name for the driver is "mxc-mmc".

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:02:00 -05:00
Balaji T K
9ea28ecbeb mmc: omap_hsmmc: fix NULL pointer dereference for dt boot
dev->platform_data is NULL in case of device tree boot,
instead use the saved version in struct omap_hsmmc_host.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 15:01:54 -05:00
Balaji T K
9d1f028644 mmc: omap_hsmmc: fix host reference after mmc_free_host
struct omap_hsmmc_host *host should not be accessed after mmc_free_host().
Reorder mmc_free_host() after iounmap(host->base).

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 14:55:31 -05:00
James Hogan
cb27a843de mmc: dw_mmc: fix multiple drv_data NULL dereferences
800d78bfcc ("mmc: dw_mmc: add support for implementation specific
callbacks") -- merged in v3.7-rc1 -- introduced multiple NULL pointer
dereferences when the default dw_mci_pltfm_probe() is used, as it sets
host->drv_data to NULL, and that's only checked against NULL in 1 out of
the 7 cases where it is dereferenced.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 14:55:31 -05:00
Yuvaraj CD
2da1d7f294 mmc: dw_mmc: enable controller interrupt before calling mmc_start_host
As mmc_start_host is getting called before enabling the dw_mmc controller
interrupt, there is a problem of missing the SDMMC_INT_CMD_DONE for the
very first command sent by the sdio_reset.

This problem occurs only when we disable MMC debugging i.e, MMC_DEBUG=n.
This patch enables the dw_mmc controller interrupt before mmc_start_host.

Signed-off-by: Yuvaraj CD <yuvaraj.cd@samsung.com>
Reviewed-by: Girish K S <girish.shivananjappa@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 14:55:30 -05:00
Jerry Huang
63ef5d8c28 mmc: sdhci-of-esdhc: disable CMD23 for some Freescale SoCs
CMD23 causes lots of errors in kernel on some freescale SoCs
(P1020, P1021, P1022, P1024, P1025 and P4080) when MMC card used,
which is because these controllers does not support CMD23,
even on the SoCs which declares CMD23 is supported.
Therefore, we'll not use CMD23.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 14:55:29 -05:00
Seungwon Jeon
00956ea360 mmc: dw_mmc: remove _dev_info compile warning
This patch removes the following warning.
drivers/mmc/host/dw_mmc.c:1976: warning: passing argument 1 of
'_dev_info' from incompatible pointer type

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-11-07 14:55:29 -05:00
Jean-Christophe PLAGNIOL-VILLARD
bcd2360c1f arm: at91: move platfarm_data to include/linux/platform_data/atmel.h
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
2012-11-06 20:29:33 +08:00
Linus Walleij
a9a83785de ARM: 7562/2: MMCI: fetch pinctrl handle and set default state
This fetches the pinctrl resource for the MMCI driver, and if
a "default" state is found, it is activated.

Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-04 10:31:46 +00:00
Ulf Hansson
70ac09358c ARM: 7552/1: mmc: mmci: Switching off HWFC for SDIO depends on MCLK
For writes, HWFC shall be switched off when transfer size <= 8
bytes and when MCLK rate is above 50 MHz. For 50MHz and below
it shall be switched off when transfer size < 8 bytes.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Johan Rudholm <johan.rudholm@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-10-18 11:06:23 +01:00
Ulf Hansson
06c1a12180 ARM: 7551/1: mmc: mmci: Fix incorrect handling of HW flow control for SDIO
For data writes <= 8 bytes, HW flow control was disabled but
never re-enabled when the transfer was completed. This meant
that a following read request would give buffer overrun errors.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Johan Rudholm <johan.rudholm@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-10-18 11:06:22 +01:00
Tony Lindgren
46cddc01aa Merge branch 'omap-for-v3.8/cleanup-headers-mmc' into omap-for-v3.8/cleanup-headers
Conflicts:
	arch/arm/mach-omap1/devices.c
	arch/arm/mach-omap2/omap_hwmod_33xx_data.c
	arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
	drivers/mmc/host/omap.c
2012-10-17 11:13:42 -07:00
Lokesh Vutla
2b6c4e7324 ARM: OMAP: DMA: Move plat/dma.h to plat-omap/dma-omap.h
Move plat/dma.h to plat-omap/dma-omap.h as part of single
zImage work

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-15 14:04:53 -07:00
Lokesh Vutla
d5e7c864f3 ARM: OMAP2+: DMA: Moving OMAP2+ DMA channel definitions to mach-omap2
Similar to omap1, some of the omap2+ dma channel definitions are
used by some drivers. For moving omap2+ dma channel definitions
to mach-omap2/, the used ones should be defined locally to driver.
Drivers can eliminate it using DT, platform data, or IORESOURCE_DMA
And moving omap2+ DMA channel definitions to mach-omap2

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-15 14:03:51 -07:00
Lokesh Vutla
8c4cc00552 ARM: OMAP1: DMA: Moving OMAP1 DMA channel definitions to mach-omap1
Some of the omap1 dma channel definitions are used by some drivers.
For moving omap1 dma channel definitions to mach-omap1/, the used
ones should be defined locally to driver. Driver can eliminate it
by using DT, platform data, or IORESOURCE_DMA.
And moving OMAP1 DMA channel definitions to mach-omap1

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-15 14:01:01 -07:00
Tony Lindgren
53db20d123 mmc: omap: Remove cpu_is_omap usage from the driver
This is needed for the ARM common zImage support.

We can use the existing slot features to pass omap1
specific options to the driver. For omap2 we don't
want to pass anything new as that will be eventually
moved to use device tree based init.

Note that this patch depends on earlier patch that
moves plat/mmc.h into include/linux/platform_data.

Cc: linux-mmc@vger.kernel.org
Cc: Venkatraman S <svenkatr@ti.com>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-15 12:10:33 -07:00
Tony Lindgren
68f39e74fb ARM: OMAP: Split plat/mmc.h into local headers and platform_data
We need to remove this from plat for ARM common zImage
support.

Also remove includes not needed by the omap_hsmmc.c driver.

Cc: linux-mmc@vger.kernel.org
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Venkatraman S <svenkatr@ti.com>
[tony@atomide.com: fold in removal of unused driver includes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-10-15 12:09:43 -07:00
Shawn Guo
7f917a8df6 mmc: mxcmmc: remove cpu_is_xxx by using platform_device_id
It changes the driver to use platform_device_id rather than cpu_is_xxx
to determine the controller type, and updates the platform code
accordingly.

As the result, mach/hardware.h inclusion gets removed from the driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Chris Ball <cjb@laptop.org>
Tested-by: Javier Martin <javier.martin@vista-silicon.com>
Cc: linux-mmc@vger.kernel.org
2012-10-15 10:05:41 +08:00
Marek Vasut
4c5bb2e42e mmc: mxs-mmc: Fix merge issue causing build error
The following error appeared due to a merge problem; the patches:

fc108d24 "mmc: mxs-mmc: fix deadlock caused by recursion loop"
829c1bf4 "mmc: spi: Pull out parts shared between MMC and SPI"

came in through separate branches and cause this build error when
combined.

drivers/mmc/host/mxs-mmc.c: In function 'mxs_mmc_enable_sdio_irq':
drivers/mmc/host/mxs-mmc.c:527:3: error: 'struct mxs_mmc_host' has no member named 'base'
drivers/mmc/host/mxs-mmc.c:527:3: error: 'struct mxs_mmc_host' has no member named 'devid'
make[3]: *** [drivers/mmc/host/mxs-mmc.o] Error 1

This patch corrects the issue.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-11 17:21:40 -04:00
Linus Torvalds
da06a8d7be ARM: SoC fixes
A series of fixes (and in some cases, some cleanups):
 
 Via Tony Lindgren:
 - A collection of OMAP regression fixes, in particular because firmware
   no longer sets up all pin states before starting the kernel.
 - cpufreq fixes for OMAP (Rafael is on vacation and this was pre-agreed).
 - A longer series of misc regression fixes and cleanups, warning removals,
   etc for OMAP
 
 From Arnd Bergmann:
 - A series of warning fixes for various platforms (defconfig builds)
 
 Misc:
 - A couple of tegra fixes, one for i.MX, some vt8500 fixes, etc.
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Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A series of fixes (and in some cases, some cleanups):

  Via Tony Lindgren:
   - A collection of OMAP regression fixes, in particular because
     firmware no longer sets up all pin states before starting the
     kernel.
   - cpufreq fixes for OMAP (Rafael is on vacation and this was
     pre-agreed).
   - A longer series of misc regression fixes and cleanups, warning
     removals, etc for OMAP

  From Arnd Bergmann:
   - A series of warning fixes for various platforms (defconfig builds)

  Misc:
   - A couple of tegra fixes, one for i.MX, some vt8500 fixes, etc."

* tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
  ARM: pxa: armcore: fix PCI PIO warnings
  ARM: integrator: use __iomem pointers for MMIO, part 2
  ARM: assabet: fix bogus warning in get_assabet_scr (again)
  ARM: shmobile: mark shmobile_init_late as __init
  ARM: integrator_cp: fix build failure
  ARM: OMAP4/AM335x: hwmod: fix disable_module regression in hardreset handling
  ARM: OMAP3: fix workaround for EMU clockdomain
  arm/omap: Replace board_ref_clock with enum values
  ARM: OMAP2+: remove duplicated include from board-omap3stalker.c
  arch/arm/plat-omap/omap-pm-noop.c: Remove unecessary semicolon
  arch/arm/mach-omap2: Remove unecessary semicolon
  arch/arm/mach-omap1/devices.c: Remove unecessary semicolon
  ARM/dts: omap5-evm: pinmux configuration for audio
  ARM/dts: Add pinctrl driver entries for omap5
  ARM/dts: omap4-panda: pinmux configuration for audio
  ARM/dts: omap4-sdp: pinmux configuration for audio
  ARM/dts: omap5-evm: Disable unused McBSP3
  ARM/dts: omap4-sdp: Disable unused McBSP3
  ARM/dts: omap4-panda: Disable unused audio IPs
  ARM: OMAP: board-omap4panda: Pin mux configuration for audio needs
  ...
2012-10-11 10:21:48 +09:00
Linus Torvalds
943c2acea5 MMC highlights for 3.7:
Core:
  - Add DT properties for card detection (broken-cd, cd-gpios, non-removable)
  - Don't poll non-removable devices
  - Fixup/rework eMMC sleep mode/"power off notify" feature
  - Support eMMC background operations (BKOPS).  To set the one-time
    programmable fuse that enables bkops on an eMMC that doesn't already
    have it set, you can use the "mmc bkops enable" command in:
      git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git
 
 Drivers:
  - atmel-mci, dw_mmc, pxa-mci, dove, s3c, spear: Add device tree support
  - bfin_sdh: Add support for the controller in bf60x
  - dw_mmc: Support Samsung Exynos SoCs
  - eSDHC: Add ADMA support
  - sdhci: Support testing a cd-gpio (from slot-gpio) instead of presence bit
  - sdhci-pltfm: Support broken-cd DT property
  - tegra: Convert to only supporting DT (mach-tegra has gone DT-only)
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Merge tag 'mmc-merge-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC updates from Chris Ball:
 "Core:
   - Add DT properties for card detection (broken-cd, cd-gpios,
     non-removable)
   - Don't poll non-removable devices
   - Fixup/rework eMMC sleep mode/"power off notify" feature
   - Support eMMC background operations (BKOPS).  To set the one-time
     programmable fuse that enables bkops on an eMMC that doesn't
     already have it set, you can use the "mmc bkops enable" command in:

       git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git

  Drivers:
   - atmel-mci, dw_mmc, pxa-mci, dove, s3c, spear: Add device tree
     support
   - bfin_sdh: Add support for the controller in bf60x
   - dw_mmc: Support Samsung Exynos SoCs
   - eSDHC: Add ADMA support
   - sdhci: Support testing a cd-gpio (from slot-gpio) instead of
     presence bit
   - sdhci-pltfm: Support broken-cd DT property
   - tegra: Convert to only supporting DT (mach-tegra has gone DT-only)"

* tag 'mmc-merge-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (67 commits)
  mmc: core: Fixup broken suspend and eMMC4.5 power off notify
  mmc: sdhci-spear: Add clk_{un}prepare() support
  mmc: sdhci-spear: add device tree bindings
  mmc: sdhci-s3c: Add clk_(enable/disable) in runtime suspend/resume
  mmc: core: Replace MMC_CAP2_BROKEN_VOLTAGE with test for fixed regulator
  mmc: sdhci-pxav3: Use sdhci_get_of_property for parsing DT quirks
  mmc: dt: Support "broken-cd" property in sdhci-pltfm
  mmc: sdhci-s3c: fix the wrong number of max bus clocks
  mmc: sh-mmcif: avoid oops on spurious interrupts
  mmc: sh-mmcif: properly handle MMC_WRITE_MULTIPLE_BLOCK completion IRQ
  mmc: sdhci-s3c: Fix crash on module insertion for second time
  mmc: sdhci-s3c: Enable only required bus clock
  mmc: Revert "mmc: dw_mmc: Add check for IDMAC configuration"
  mmc: mxcmmc: fix bug that may block a data transfer forever
  mmc: omap_hsmmc: Pass on the suspend failure to the PM core
  mmc: atmel-mci: AP700x PDC is not connected to MCI
  mmc: atmel-mci: DMA can be used with other controllers
  mmc: mmci: use clk_prepare_enable and clk_disable_unprepare
  mmc: sdhci-s3c: Add device tree support
  mmc: dw_mmc: add support for exynos specific implementation of dw-mshc
  ...
2012-10-10 10:58:42 +09:00
Ulf Hansson
e6c085863f mmc: core: Fixup broken suspend and eMMC4.5 power off notify
This patch fixes up the broken suspend sequence for eMMC with sleep
support. Additionally it reworks the eMMC4.5 Power Off Notification
feature so it fits together with the existing sleep feature.

The CMD0 based re-initialization of the eMMC at resume is re-introduced
to maintain compatiblity for devices using sleep.

A host shall use MMC_CAP2_POWEROFF_NOTIFY to enable the Power Off
Notification feature. We might be able to remove this cap later on,
if we think that Power Off Notification always is preferred over
sleep, even if the host is not able to cut the eMMC VCCQ power.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Saugata Das <saugata.das@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-07 17:41:45 -04:00
Viresh Kumar
da764f97df mmc: sdhci-spear: Add clk_{un}prepare() support
clk_{un}prepare is mandatory for platforms using common clock framework.
Since this driver is used by SPEAr platform, which supports common clock
framework, add clk_{un}prepare() support for it.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-07 17:41:45 -04:00
Viresh Kumar
067bf748bd mmc: sdhci-spear: add device tree bindings
This adds simple DT bindings for SDHCI SPEAr controller. It uses cd-gpios
from common mmc bindings.

This also fixes spear300-evb.dts with correct name for card detect binding.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-07 17:41:44 -04:00
Chander Kashyap
2abeb5c5de mmc: sdhci-s3c: Add clk_(enable/disable) in runtime suspend/resume
Perform clock disable/enable in runtime suspend/resume.

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-07 17:41:43 -04:00
Chris Ball
9cde5b7a49 mmc: core: Replace MMC_CAP2_BROKEN_VOLTAGE with test for fixed regulator
Before this patch, we were using MMC_CAP2_BROKEN_VOLTAGE as a way to
avoid calling regulator_set_voltage() on a fixed regulator, but that's
just duplicating information that already exists -- we should test
whether the regulator is fixed directly, instead of via a capability.

This patch implements that test.  We can't reclaim the capability bit
just yet, since there are still boards in arch/arm/ that reference it;
those references can be removed now.

Reported-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-07 17:41:43 -04:00
Chris Ball
f4f24ade1b mmc: sdhci-pxav3: Use sdhci_get_of_property for parsing DT quirks
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-07 17:41:42 -04:00
Chris Ball
38ca724805 mmc: dt: Support "broken-cd" property in sdhci-pltfm
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-07 17:41:42 -04:00
Jaehoon Chung
5feb54a1ab mmc: sdhci-s3c: fix the wrong number of max bus clocks
We can use up to four bus-clocks; but on module remove, we didn't
disable the fourth bus clock.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-07 17:41:28 -04:00
Olof Johansson
823bba8ff1 ARM: tegra: fix mismerges of header file inclusions
Another mishandled merge conflict by me, where the header file renames
and the removal of gpio includes clashed and I chose the wrong end result.

Fixes build breakage for tegra_defconfig.

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-10-07 07:02:06 -07:00
Andi Kleen
6cfe1093ca sections: fix section conflicts in drivers/mmc
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-06 03:04:42 +09:00
Guennadi Liakhovetski
8464dd52d3 mmc: sh-mmcif: avoid oops on spurious interrupts
On some systems, e.g., kzm9g, MMCIF interfaces can produce spurious
interrupts without any active request. To prevent the Oops, that results
in such cases, don't dereference the mmc request pointer until we make
sure, that we are indeed processing such a request.

Reported-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:28 -04:00
Guennadi Liakhovetski
7a7eb3286b mmc: sh-mmcif: properly handle MMC_WRITE_MULTIPLE_BLOCK completion IRQ
Upon completion of a MMC_WRITE_MULTIPLE_BLOCK command MMCIF issues an IRQ
with the DTRANE bit set and often with one or several of CMD12 bits set.
If those interrupts are not acknowledged, an additional interrupt can be
produced and will be delivered later, possibly, when the transaction has
already been completed. To prevent this from happening, CMD12 completion
interrupt sources have to be cleared too upon reception of an DTRANE IRQ.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:27 -04:00
Chander Kashyap
387a8cbdf8 mmc: sdhci-s3c: Fix crash on module insertion for second time
If sdhci-s3c driver is built as module, it gives following error if inserted
again after removing. This was happening as pm_runtime_use_autosuspend() is
called in sdhci_s3c_probe() function but in sdhci_s3c_remove() its
complementary pm_runtime_dont_use_autosuspend() is not called.

BUG: spinlock bad magic on CPU#1, insmod/955
 lock: 0xee771368, .magic: 00000000, .owner: insmod/955, .owner_cpu: 1
[<c00147e0>] (unwind_backtrace+0x0/0xf8) from [<c0136b40>] (do_raw_spin_unlock+0xa4/0xe4)
[<c0136b40>] (do_raw_spin_unlock+0xa4/0xe4) from [<c01be508>] (_raw_spin_unlock_irqrestore+0xc/0x38)
[<c01be508>] (_raw_spin_unlock_irqrestore+0xc/0x38) from [<c01a9334>] (sdhci_runtime_suspend_host+0x54/0x80)
[<c01a9334>] (sdhci_runtime_suspend_host+0x54/0x80) from [<bf0060a8>] (sdhci_s3c_runtime_suspend+0x14/0x38 [sdhci_s3c])
[<bf0060a8>] (sdhci_s3c_runtime_suspend+0x14/0x38 [sdhci_s3c]) from [<c016cb00>] (pm_generic_runtime_suspend+0x2c/0x40)
[<c016cb00>] (pm_generic_runtime_suspend+0x2c/0x40) from [<c0170090>] (__rpm_callback+0x70/0x98)
[<c0170090>] (__rpm_callback+0x70/0x98) from [<c01703f0>] (rpm_suspend+0xf0/0x534)
[<c01703f0>] (rpm_suspend+0xf0/0x534) from [<c0171670>] (__pm_runtime_suspend+0x5c/0x74)
[<c0171670>] (__pm_runtime_suspend+0x5c/0x74) from [<c016d018>] (pm_generic_runtime_idle+0x44/0x4c)
[<c016d018>] (pm_generic_runtime_idle+0x44/0x4c) from [<c0170090>] (__rpm_callback+0x70/0x98)
[<c0170090>] (__rpm_callback+0x70/0x98) from [<c0170984>] (rpm_idle+0xdc/0x18c)
[<c0170984>] (rpm_idle+0xdc/0x18c) from [<c0171608>] (pm_runtime_set_autosuspend_delay+0x30/0x3c)
[<c0171608>] (pm_runtime_set_autosuspend_delay+0x30/0x3c) from [<bf0069c4>] (sdhci_s3c_probe+0x35c/0x52c [sdhci_s3c])
[<bf0069c4>] (sdhci_s3c_probe+0x35c/0x52c [sdhci_s3c]) from [<c016a014>] (platform_drv_probe+0x18/0x1c)

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:27 -04:00
Chander Kashyap
e684c46876 mmc: sdhci-s3c: Enable only required bus clock
In case of multiple bus clock sources, all the clock sources were
getting enabled. As only one clock source is needed at the time hence
enable only the required bus clock.

This patch does as follows:
1.	In sdhci_s3c_probe enable only required bus clock source.

2.	Handle the disabling of old bus clock and enables the
	best clock selected in sdhci_s3c_set_clock().

Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:26 -04:00
Seungwon Jeon
897b69e720 mmc: Revert "mmc: dw_mmc: Add check for IDMAC configuration"
This reverts commit 94c6cee91 (Add check for IDMAC configuration).
Synopsys says that only if internal dmac is not present, optional
external dma interface is present. When internal dmac is present,
'0' value in DMA_INTERFACE of HCON is reasonable. DMA_INTERFACE
indicates external dma interface. And idmac initialization is
prohibited now.

The commit should be reverted since: the check for IDMAC is not
reliable; falling back to PIO would provide awful performance; we
wouldn't expect to see instances of this block without DMA support.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:25 -04:00
Javier Martin
f6ad0a4813 mmc: mxcmmc: fix bug that may block a data transfer forever
The problem can be easily reproduced using a script that loops
copying a file in an SD card to another place in the same SD card
and its related to read transfers. This only happens with DMA enabled.

This is related to the fact that, when reading, an MMC irq signals
the fact that all data from the SD card has been copied to the
internal buffers. However, it doesn't signal whether the DMA transfer
that is in charge of moving data from these internal buffers to RAM
has finished or not. Thus, calling dmaengine_terminate_all() in the
MMC irq routine can cancel an ongoing DMA transfer leaving some data
in the internal buffers that produces an accumulative effect which,
in the end, blocks a read data transfer forever.

The following patch watches DMA irq for reading and MMC irqs for
writing transfers. The 'dangerous' usage of dmaengine_terminate_all()
is removed and a timeout of 10 seconds is added so that the MMC won't
block forever anymore.

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:24 -04:00
Vaibhav Bedia
c4c8eeb4df mmc: omap_hsmmc: Pass on the suspend failure to the PM core
In some cases mmc_suspend_host() is not able to claim the
host and proceed with the suspend process. The core returns
-EBUSY to the host controller driver. Unfortunately, the
host controller driver does not pass on this information
to the PM core and hence the system suspend process continues.

	ret = mmc_suspend_host(host->mmc);
	if (ret) {
		host->suspended = 0;
		if (host->pdata->resume) {
			ret = host->pdata->resume(dev, host->slot_id);

The return status from mmc_suspend_host() is overwritten by return
status from host->pdata->resume. So the original return status is lost.

In these cases the MMC core gets to an unexpected state
during resume and multiple issues related to MMC crop up.
1. Host controller driver starts accessing the device registers
before the clocks are enabled which leads to a prefetch abort.
2. A file copy thread which was launched before suspend gets
stuck due to the host not being reclaimed during resume.

To avoid such problems pass on the -EBUSY status to the PM core
from the host controller driver. With this change, MMC core
suspend might still fail but it does not end up making the
system unusable. Suspend gets aborted and the user can try
suspending the system again.

Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:23 -04:00
Hein_Tibosch
6bf2af8cd2 mmc: atmel-mci: AP700x PDC is not connected to MCI
Earlier, atmel-mci was adapted to make use of the peripheral DMA
controller (PDC), in case normal DMA wouldn't work.
( http://comments.gmane.org/gmane.linux.kernel.mmc/9403 )

This works OK on ARM platforms (AT91), but it broke the driver
for AVR32, the AP700x.  Although the MCI has PDC support, the
connection is not done for AVR chips.

This patch makes the use of PDC depend on !CONFIG_AVR32.

Signed-off-by: Hein Tibosch <hein_tibosch@yahoo.es>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:23 -04:00
Hein_Tibosch
ccdfe6122f mmc: atmel-mci: DMA can be used with other controllers
After the latest changes to atmel-mci, it could not be used with
DMA on the AVR32 platform. This patch will allow to use DMA again
and it will avoid access to MCI register ATMCI_DMA.

Even if the IP version is lower than v3xx and doesn't have the DMA
configuration register, DMA transfers can be used with a different
controller than the Atmel AHB DMA one. For instance, some AVR chips
use the Synopsys DesignWare AHB DMA controller.

Signed-off-by: Hein Tibosch <hein_tibosch@yahoo.es>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:22 -04:00
Julia Lawall
ac940938df mmc: mmci: use clk_prepare_enable and clk_disable_unprepare
clk_prepare_enable and clk_disable_unprepare combine clk_prepare and
clk_enable, and clk_disable and clk_unprepare.  They make the code more
concise, and ensure that clk_unprepare is called when clk_enable fails.

A simplified version of the semantic patch that introduces calls to these
functions is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e;
@@

- clk_prepare(e);
- clk_enable(e);
+ clk_prepare_enable(e);

@@
expression e;
@@

- clk_disable(e);
- clk_unprepare(e);
+ clk_disable_unprepare(e);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:21 -04:00
Thomas Abraham
cd1b00eb24 mmc: sdhci-s3c: Add device tree support
Add device tree based discovery support for Samsung's sdhci controller.

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:20 -04:00
Thomas Abraham
c3665006ec mmc: dw_mmc: add support for exynos specific implementation of dw-mshc
Samsung Exynos SoC's extend the dw-mshc controller for additional clock
and bus control. Add support for these extensions and include provide
device tree based discovery suppory as well.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:20 -04:00
Thomas Abraham
800d78bfcc mmc: dw_mmc: add support for implementation specific callbacks
The core dw-mshc controller driver can let platform specific
implementations of the dw-mshc controller to control the hardware
as required by such implementations. This is acheived by invoking
implementation specific (optional) callbacks. Define the list of
callbacks supported the add invocation points for the same.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:19 -04:00
Thomas Abraham
17403f235e mmc: dw_mmc: prepare functions in dw_mmc-pltfm for reuse
Platform implementations of dw-mshc controller may choose to extend the
features of the standard dw-mshc controller such as adding additional
clocking options or modifying the bus interface. Support for such
implementation specific extensions can be incorporated into dw_mmc-pltfm,
but including multiple such platform specific implementations would
convolute the existing dw_mmc-pltfm code.

Instead, it would be better to create implementation specific platform
drivers to support implementation specific features. Such platforms
drivers can reuse the existing infrastructure in dw_mmc-pltfm for
resource identification and controller registration and provide support
for implementation specific features. So, allow the infrastructure in
dw_mmc-pltfm to be reused by other implementation specific platform
drivers.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:18 -04:00
Thomas Abraham
c91eab4b25 mmc: dw_mmc: add device tree support
Add device tree based discovery support.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:17 -04:00
Thomas Abraham
b4967aa58e mmc: dw_mmc: add quirk to indicate missing write protect line
If the write protect pad of the controller is not connected to the write
protect pin of the slot, the driver should be notified of this condition
so that incorrect check for write protection by reading the WRTORT
register can avoided. The get_ro platform callback can be used for in
such cases, but with device tree support enabled, such platform callbacks
cannot be supported.

Add a new quirk for notifying the driver about the missing write protect
line so the driver can assume that the card write protection is disabled.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:16 -04:00
Thomas Abraham
f90a0612f0 mmc: dw_mmc: lookup for optional biu and ciu clocks
Some platforms allow for clock gating and control of bus interface unit
clock and card interface unit clock. Add support for clock lookup of
optional biu and ciu clocks for clock gating and clock speed
determination.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:15 -04:00
Thomas Abraham
1c2215b7c6 mmc: dw_mmc: allow probe to succeed even if one slot is initialized
Instead of aborting the probe when a slot initialization fails, allow
initialization of as many slots as possible. If there is at least one
instance of a slot that is successfully initialized, allow the driver
probe to succeed.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:15 -04:00
Thomas Abraham
bb8bdc77ef mmc: dw_mmc: Use devm_* functions in dw_mmc platform driver
Use devm_* managed functions for simpler error handling.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:14 -04:00
Thomas Abraham
4a90920c6b mmc: dw_mmc: convert copy of struct device in struct dw_mci to a reference
The 'struct dw_mci' maintains a copy of the pdev->dev instance instead of
maintaining a reference to that 'struct device' instance. Any resource
allocated using the device resource management kernel API with the instance
of 'struct device' in 'struct dw_mci' is then incorrect. Fix this by
converting the copy of 'struct device' in 'struct dw_mci' to a reference.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:13 -04:00
Jaehoon Chung
950d56acce mmc: support BKOPS feature for eMMC
Enable eMMC background operations (BKOPS) feature.

If URGENT_BKOPS is set after a response, note that BKOPS are required.
Immediately run BKOPS if required.  Read/write operations should be
requested during BKOPS(LEVEL-1), then issue HPI to interrupt the
ongoing BKOPS and service the foreground operation.
(This patch only controls the LEVEL2/3.)

When repeating the writing 1GB data, at a certain time, performance is
decreased.  At that time, card triggers the Level-3 or Level-2.  After
running bkops, performance is recovered.

Future considerations:
 * Check BKOPS_LEVEL=1 and start BKOPS in a preventive manner.
 * Interrupt ongoing BKOPS before powering off the card.
 * How do we get BKOPS_STATUS value (periodically send ext_csd command)?
 * If using periodic bkops, also consider runtime_pm control.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-10-03 10:05:12 -04:00
Linus Torvalds
7fe0b14b72 spi: Updates for v3.7
No framework work here, only a bunch of driver updates of varying sizes:
 
 - Factoring out of the core hardware support from the MXS MMC driver by
   Marek Vasut to allow the hardware to also be used for SPI.
 - Lots of error handling cleanups from Guenter Roeck
 - Removal of the existing Tegra driver which is quite comprehensively
   broken as detailed in the changelog for the removal.
 - DT suppport for the PL022 and GPIO drivers.
 - pinctrl support for OMAP and PL022.
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Merge tag 'spi-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc

Pull spi updates from Mark Brown:
 "No framework work here, only a bunch of driver updates of varying
  sizes:

   - Factoring out of the core hardware support from the MXS MMC driver
     by Marek Vasut to allow the hardware to also be used for SPI.
   - Lots of error handling cleanups from Guenter Roeck
   - Removal of the existing Tegra driver which is quite comprehensively
     broken as detailed in the changelog for the removal.
   - DT suppport for the PL022 and GPIO drivers.
   - pinctrl support for OMAP and PL022."

Pulling from Mark Brown as Grant Likely is still busy moving.

* tag 'spi-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc: (53 commits)
  spi: remove completely broken Tegra driver
  spi/imx: set the inactive state of the clock according to the clock polarity
  spi/pl022: get/put resources on suspend/resume
  spi/pl022: use more managed resources
  spi/pl022: Devicetree support w/o platform data
  spi/s3c64xx: Don't free controller_data on non-dt platforms
  spi: omap2-mcspi: add pinctrl support
  spi/pl022: adopt pinctrl support
  spi: omap2-mcspi: Cleanup the omap2_mcspi_txrx_dma function
  spi/gpio: Fix stub for spi_gpio_probe_dt()
  spi/mxs: Make the SPI block clock speed configurable via DT
  spi: spi-sh-hspi: drop frees of devm_ alloc'd data
  spi/pl022: Fix chipselects pointer computation
  spi: spi-tle62x0: Use module_spi_driver macro
  mxs/spi: Rework the mxs_ssp_timeout to be more readable
  mxs/spi: Decrement the DMA/PIO border
  mxs/spi: Increment the transfer length only if transfer succeeded
  mxs/spi: Fix issues when doing long continuous transfer
  spi: spi-gpio: Add DT bindings
  spi: spi-gpio: store chipselect information in private structure
  ...
2012-10-02 17:26:42 -07:00
Linus Torvalds
033d9959ed Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue changes from Tejun Heo:
 "This is workqueue updates for v3.7-rc1.  A lot of activities this
  round including considerable API and behavior cleanups.

   * delayed_work combines a timer and a work item.  The handling of the
     timer part has always been a bit clunky leading to confusing
     cancelation API with weird corner-case behaviors.  delayed_work is
     updated to use new IRQ safe timer and cancelation now works as
     expected.

   * Another deficiency of delayed_work was lack of the counterpart of
     mod_timer() which led to cancel+queue combinations or open-coded
     timer+work usages.  mod_delayed_work[_on]() are added.

     These two delayed_work changes make delayed_work provide interface
     and behave like timer which is executed with process context.

   * A work item could be executed concurrently on multiple CPUs, which
     is rather unintuitive and made flush_work() behavior confusing and
     half-broken under certain circumstances.  This problem doesn't
     exist for non-reentrant workqueues.  While non-reentrancy check
     isn't free, the overhead is incurred only when a work item bounces
     across different CPUs and even in simulated pathological scenario
     the overhead isn't too high.

     All workqueues are made non-reentrant.  This removes the
     distinction between flush_[delayed_]work() and
     flush_[delayed_]_work_sync().  The former is now as strong as the
     latter and the specified work item is guaranteed to have finished
     execution of any previous queueing on return.

   * In addition to the various bug fixes, Lai redid and simplified CPU
     hotplug handling significantly.

   * Joonsoo introduced system_highpri_wq and used it during CPU
     hotplug.

  There are two merge commits - one to pull in IRQ safe timer from
  tip/timers/core and the other to pull in CPU hotplug fixes from
  wq/for-3.6-fixes as Lai's hotplug restructuring depended on them."

Fixed a number of trivial conflicts, but the more interesting conflicts
were silent ones where the deprecated interfaces had been used by new
code in the merge window, and thus didn't cause any real data conflicts.

Tejun pointed out a few of them, I fixed a couple more.

* 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (46 commits)
  workqueue: remove spurious WARN_ON_ONCE(in_irq()) from try_to_grab_pending()
  workqueue: use cwq_set_max_active() helper for workqueue_set_max_active()
  workqueue: introduce cwq_set_max_active() helper for thaw_workqueues()
  workqueue: remove @delayed from cwq_dec_nr_in_flight()
  workqueue: fix possible stall on try_to_grab_pending() of a delayed work item
  workqueue: use hotcpu_notifier() for workqueue_cpu_down_callback()
  workqueue: use __cpuinit instead of __devinit for cpu callbacks
  workqueue: rename manager_mutex to assoc_mutex
  workqueue: WORKER_REBIND is no longer necessary for idle rebinding
  workqueue: WORKER_REBIND is no longer necessary for busy rebinding
  workqueue: reimplement idle worker rebinding
  workqueue: deprecate __cancel_delayed_work()
  workqueue: reimplement cancel_delayed_work() using try_to_grab_pending()
  workqueue: use mod_delayed_work() instead of __cancel + queue
  workqueue: use irqsafe timer for delayed_work
  workqueue: clean up delayed_work initializers and add missing one
  workqueue: make deferrable delayed_work initializer names consistent
  workqueue: cosmetic whitespace updates for macro definitions
  workqueue: deprecate system_nrt[_freezable]_wq
  workqueue: deprecate flush[_delayed]_work_sync()
  ...
2012-10-02 09:54:49 -07:00
Linus Torvalds
9cd11c0c47 ARM: soc: multiplatform enablement
This is a pretty significant branch. It's the introduction of the
 first multiplatform support on ARM, and with this (and the later
 branch) merged, it is now possible to build one kernel that contains
 support for highbank, vexpress, mvebu, socfpga, and picoxcell. More
 platforms will be convered over in the next few releases.
 
 Two critical last things had to be done for this to be practical and
 possible:
 * Today each platform has its own include directory under
   mach-<mach>/include/mach/*, and traditionally that is where a lot of
   driver/platform shared definitions have gone, such as platform data
   structures. They now need to move out to a common location instead,
   and this branch moves a large number of those out to
   include/linux/platform_data.
 * Each platform used to list the device trees to compile for its
   boards in mach-<mach>/Makefile.boot.
 
 Both of the above changes will mean that there are some merge
 conflicts to come (and some to resolve here). It's a one-time move and
 once it settles in, we should be good for quite a while. Sorry for the
 overhead.
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Merge tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM soc multiplatform enablement from Olof Johansson:
 "This is a pretty significant branch.  It's the introduction of the
  first multiplatform support on ARM, and with this (and the later
  branch) merged, it is now possible to build one kernel that contains
  support for highbank, vexpress, mvebu, socfpga, and picoxcell.  More
  platforms will be convered over in the next few releases.

  Two critical last things had to be done for this to be practical and
  possible:
   * Today each platform has its own include directory under
     mach-<mach>/include/mach/*, and traditionally that is where a lot
     of driver/platform shared definitions have gone, such as platform
     data structures.  They now need to move out to a common location
     instead, and this branch moves a large number of those out to
     include/linux/platform_data.
   * Each platform used to list the device trees to compile for its
     boards in mach-<mach>/Makefile.boot.

  Both of the above changes will mean that there are some merge
  conflicts to come (and some to resolve here).  It's a one-time move
  and once it settles in, we should be good for quite a while.  Sorry
  for the overhead."

Fix conflicts as per Olof.

* tag 'multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (51 commits)
  ARM: add v7 multi-platform defconfig
  ARM: msm: Move core.h contents into common.h
  ARM: highbank: call highbank_pm_init from .init_machine
  ARM: dtb: move all dtb targets to common Makefile
  ARM: spear: move platform_data definitions
  ARM: samsung: move platform_data definitions
  ARM: orion: move platform_data definitions
  ARM: vexpress: convert to multi-platform
  ARM: initial multiplatform support
  ARM: mvebu: move armada-370-xp.h in mach dir
  ARM: vexpress: remove dependency on mach/* headers
  ARM: picoxcell: remove dependency on mach/* headers
  ARM: move all dtb targets out of Makefile.boot
  ARM: picoxcell: move debug macros to include/debug
  ARM: socfpga: move debug macros to include/debug
  ARM: mvebu: move debug macros to include/debug
  ARM: vexpress: move debug macros to include/debug
  ARM: highbank: move debug macros to include/debug
  ARM: move debug macros to common location
  ARM: make mach/gpio.h headers optional
  ...
2012-10-01 19:11:38 -07:00
Linus Torvalds
61464c8357 ARM: soc: general cleanups
This is a large branch that contains a handful of different cleanups:
 
 - Fixing up the I/O space remapping on PCI on ARM. This is a series
   from Rob Herring that restructures how all pci devices allocate I/O
   space, and it's part of the work to allow multiplatform kernels.
 - A number of cleanup series for OMAP, moving and removing some
   headers, sparse irq rework and in general preparation for
   multiplatform.
 - Final removal of all non-DT boards for Tegra, it is now
   device-tree-only!
 - Removal of a stale platform, nxp4008. It's an old mobile chipset
   that is no longer in use, and was very likely never really used with
   a mainline kernel. We have not been able to find anyone interested
   in keeping it around in the kernel.
 - Removal of the legacy dmaengine driver on tegra
 
 + A handful of other things that I haven't described above.
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM soc general cleanups from Olof Johansson:
 "This is a large branch that contains a handful of different cleanups:

   - Fixing up the I/O space remapping on PCI on ARM.  This is a series
     from Rob Herring that restructures how all pci devices allocate I/O
     space, and it's part of the work to allow multiplatform kernels.
   - A number of cleanup series for OMAP, moving and removing some
     headers, sparse irq rework and in general preparation for
     multiplatform.
   - Final removal of all non-DT boards for Tegra, it is now
     device-tree-only!
   - Removal of a stale platform, nxp4008.  It's an old mobile chipset
     that is no longer in use, and was very likely never really used
     with a mainline kernel.  We have not been able to find anyone
     interested in keeping it around in the kernel.
   - Removal of the legacy dmaengine driver on tegra

  + A handful of other things that I haven't described above."

Fix up some conflicts with the staging tree (and because nxp4008 was
removed)

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (184 commits)
  ARM: OMAP2+: serial: Change MAX_HSUART_PORTS to 6
  ARM: OMAP4: twl-common: Support for additional devices on i2c1 bus
  ARM: mmp: using for_each_set_bit to simplify the code
  ARM: tegra: harmony: fix ldo7 regulator-name
  ARM: OMAP2+: Make omap4-keypad.h local
  ARM: OMAP2+: Make l4_3xxx.h local
  ARM: OMAP2+: Make l4_2xxx.h local
  ARM: OMAP2+: Make l3_3xxx.h local
  ARM: OMAP2+: Make l3_2xxx.h local
  ARM: OMAP1: Move irda.h from plat to mach
  ARM: OMAP2+: Make hdq1w.h local
  ARM: OMAP2+: Make gpmc-smsc911x.h local
  ARM: OMAP2+: Make gpmc-smc91x.h local
  ARM: OMAP1: Move flash.h from plat to mach
  ARM: OMAP2+: Make debug-devices.h local
  ARM: OMAP1: Move board-voiceblue.h from plat to mach
  ARM: OMAP1: Move board-sx1.h from plat to mach
  ARM: OMAP2+: Make omap-wakeupgen.h local
  ARM: OMAP2+: Make omap-secure.h local
  ARM: OMAP2+: Make ctrl_module_wkup_44xx.h local
  ...
2012-10-01 18:19:05 -07:00
Linus Torvalds
47061eda25 ARM: soc: non-critical bug fixes
These were submitted as bug fixes before v3.6 but not considered important
 enough to be included in it. Some of them cross over to cleanup territory
 as well, and aren't strictly bugfixes.
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Merge tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull non-critical ARM soc bug fixes from Olof Johansson:
 "These were submitted as bug fixes before v3.6 but not considered
  important enough to be included in it.  Some of them cross over to
  cleanup territory as well, and aren't strictly bugfixes."

* tag 'fixes-non-critical' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (48 commits)
  ARM: nomadik: remove NAND_NO_READRDY use
  ARM: pxa: fix return value check in pxa2xx_drv_pcmcia_probe()
  ARM: SAMSUNG: Add missing variable declaration in s3c64xx_spi1_set_platdata()
  ARM: S3C24XX: removes unnecessary semicolon
  ARM: S3C24xx: delete double assignment
  ARM: EXYNOS: fix address for EXYNOS4 MDMA1
  ARM: EXYNOS: fixed SYSMMU setup definition to mate parameter name
  ARM: ep93xx: Move ts72xx.h out of include/mach
  ARM: ep93xx: use __iomem pointers for MMIO
  ARM: msm: Fix early debug uart mapping on some memory configs
  ARM: msm: io: Change the default static iomappings to be shared
  ARM: msm: io: Remove 7x30 iomap region from 7x00
  ARM: msm: Remove call to missing FPGA init on 8660
  ARM: OMAP4: wakeupgen: remove duplicate AUXCOREBOOT* read/write
  ARM: OMAP4: wakeupgen: Fix the typo in AUXCOREBOOT register save
  dma: tegra: make data used as *of_device_id.data const
  can: mpc5xxx_can: make data used as *of_device_id.data const
  macintosh/mediabay: make data used as *of_device_id.data const
  i2c/mpc: make data used as *of_device_id.data const
  mfd/da9052: make i2c_device_id array const
  ...
2012-10-01 18:02:07 -07:00
Linus Torvalds
3498d13b80 TTY merge for 3.7-rc1
As we skipped the merge window for 3.6-rc1 for the tty tree, everything
 is now settled down and working properly, so we are ready for 3.7-rc1.
 Here's the patchset, it's big, but the large changes are removing a
 firmware file and adding a staging tty driver (it depended on the tty
 core changes, so it's going through this tree instead of the staging
 tree.)
 
 All of these patches have been in the linux-next tree for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull TTY changes from Greg Kroah-Hartman:
 "As we skipped the merge window for 3.6-rc1 for the tty tree,
  everything is now settled down and working properly, so we are ready
  for 3.7-rc1.  Here's the patchset, it's big, but the large changes are
  removing a firmware file and adding a staging tty driver (it depended
  on the tty core changes, so it's going through this tree instead of
  the staging tree.)

  All of these patches have been in the linux-next tree for a while.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

Fix up more-or-less trivial conflicts in
 - drivers/char/pcmcia/synclink_cs.c:
    tty NULL dereference fix vs tty_port_cts_enabled() helper function
 - drivers/staging/{Kconfig,Makefile}:
    add-add conflict (dgrp driver added close to other staging drivers)
 - drivers/staging/ipack/devices/ipoctal.c:
    "split ipoctal_channel from iopctal" vs "TTY: use tty_port_register_device"

* tag 'tty-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (235 commits)
  tty/serial: Add kgdb_nmi driver
  tty/serial/amba-pl011: Quiesce interrupts in poll_get_char
  tty/serial/amba-pl011: Implement poll_init callback
  tty/serial/core: Introduce poll_init callback
  kdb: Turn KGDB_KDB=n stubs into static inlines
  kdb: Implement disable_nmi command
  kernel/debug: Mask KGDB NMI upon entry
  serial: pl011: handle corruption at high clock speeds
  serial: sccnxp: Make 'default' choice in switch last
  serial: sccnxp: Remove mask termios caps for SW flow control
  serial: sccnxp: Report actual baudrate back to core
  serial: samsung: Add poll_get_char & poll_put_char
  Powerpc 8xx CPM_UART setting MAXIDL register proportionaly to baud rate
  Powerpc 8xx CPM_UART maxidl should not depend on fifo size
  Powerpc 8xx CPM_UART too many interrupts
  Powerpc 8xx CPM_UART desynchronisation
  serial: set correct baud_base for EXSYS EX-41092 Dual 16950
  serial: omap: fix the reciever line error case
  8250: blacklist Winbond CIR port
  8250_pnp: do pnp probe before legacy probe
  ...
2012-10-01 12:26:52 -07:00
Linus Torvalds
99dbb1632f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull the trivial tree from Jiri Kosina:
 "Tiny usual fixes all over the place"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)
  doc: fix old config name of kprobetrace
  fs/fs-writeback.c: cleanup riteback_sb_inodes kerneldoc
  btrfs: fix the commment for the action flags in delayed-ref.h
  btrfs: fix trivial typo for the comment of BTRFS_FREE_INO_OBJECTID
  vfs: fix kerneldoc for generic_fh_to_parent()
  treewide: fix comment/printk/variable typos
  ipr: fix small coding style issues
  doc: fix broken utf8 encoding
  nfs: comment fix
  platform/x86: fix asus_laptop.wled_type module parameter
  mfd: printk/comment fixes
  doc: getdelays.c: remember to close() socket on error in create_nl_socket()
  doc: aliasing-test: close fd on write error
  mmc: fix comment typos
  dma: fix comments
  spi: fix comment/printk typos in spi
  Coccinelle: fix typo in memdup_user.cocci
  tmiofb: missing NULL pointer checks
  tools: perf: Fix typo in tools/perf
  tools/testing: fix comment / output typos
  ...
2012-10-01 09:06:36 -07:00
Mark Brown
ac48f6cb5f Linux 3.6-rc6
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Merge tag 'v3.6-rc6' into spi-mxs

Linux 3.6-rc6

Conflicts (overlap between moving code that accesses registers around
and factoring the register access out into a SSP layer):
	drivers/mmc/host/mxs-mmc.c
2012-09-25 13:41:02 +01:00
Olof Johansson
e3a66aa33a Merge branch 'multiplatform/platform-data' into next/multiplatform
* multiplatform/platform-data:
  ARM: spear: move platform_data definitions
  ARM: samsung: move platform_data definitions
  ARM: orion: move platform_data definitions
  ARM: nomadik: move platform_data definitions
  ARM: w90x900: move platform_data definitions
  ARM: vt8500: move platform_data definitions
  ARM: tegra: move sdhci platform_data definition
  ARM: sa1100: move platform_data definitions
  ARM: pxa: move platform_data definitions
  ARM: netx: move platform_data definitions
  ARM: msm: move platform_data definitions
  ARM: imx: move platform_data definitions
  ARM: ep93xx: move platform_data definitions
  ARM: davinci: move platform_data definitions
  ARM: at91: move platform_data definitions

Conflicts due to removed files:
	arch/arm/mach-tegra/board-harmony.c
	arch/arm/mach-tegra/board-trimslice.c

Conflicts due to code removal:
	arch/arm/mach-tegra/board-paz00.c

Context conflicts in:
	drivers/mmc/host/sdhci-tegra.c
	drivers/net/irda/pxaficp_ir.c

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-22 01:07:21 -07:00
Tony Lindgren
70c494c312 ARM: OMAP1: Make plat/mux.h omap1 only
We are moving omap2+ to use the device tree based pinctrl-single.c
and will be removing the old mux framework. This will remove the
omap1 specific parts from plat-omap.

Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-usb@vger.kernel.org
Cc: linux-pcmcia@lists.infradead.org
Cc: spi-devel-general@lists.sourceforge.net
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-09-20 14:54:57 -07:00
Arnd Bergmann
436d42c61c ARM: samsung: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the samsung include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Liam Girdwood <lrg@ti.com>
Cc: linux-samsung-soc@vger.kernel.org
2012-09-19 17:42:18 +02:00
Arnd Bergmann
c02cecb92e ARM: orion: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the orion include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Dan Williams <djbw@fb.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
2012-09-19 17:42:17 +02:00
Guennadi Liakhovetski
bec9d4e593 mmc: sdhci: Test cd-gpio instead of SDHCI presence when probing
Previously to this patch, an SDHCI platform that uses a GPIO for
card detection instead of the internal SDHCI_CARD_PRESENT bit on
the presence register would fail to detect a new card.

Some drivers worked around this in various ways: esdhc-imx defines
an IO accessor to fake the presence bit being true, s3c turns on
polling (which stops the SDHCI driver from checking the bit) after
a card's inserted.  But none of this should be necessary; the real
fix is to check whether we're using a GPIO and avoid relying on
the presence bit if so, as this patch implements.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-19 16:29:45 +08:00
Matt Porter
5413da811f mmc: davinci_mmc: convert to DMA engine API
Removes use of the DaVinci EDMA private DMA API and replaces
it with use of the DMA engine API.

Signed-off-by: Matt Porter <mporter@ti.com>
Tested-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-19 16:29:44 +08:00
Thierry Reding
d8e2ac330f mmc: sdio: Fix PM_SLEEP related build warnings
Power management callbacks defined by SIMPLE_DEV_PM_OPS are only used if
the PM_SLEEP Kconfig symbol has been defined. If not, the compiler will
complain about them being unused. However, since the callback for this
driver doesn't do anything it can just as well be dropped.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-19 16:29:43 +08:00
Kyungsik Lee
1a41313e7f mmc: core: Remove bounce buffer in mmc_send_cxd_data()
It is expected that Extended CSD register (the size of this register
is larger than CID/CSD) will be referenced more frequently as more
fields have been added to Extended CSD and it seems that it is not
a good option to double the memory used.

This patch is intended to avoid the use of bounce buffer for reading
Extended CSD register in mmc_send_cxd_data(). It will provide a better
performance gain by removing memcpy() overhead for a half KiB and
a redundant bounce buffer allocated repeatedly at the cost of providing
DMA-capable buffer from upper caller (but on-stack buffer is allowed
with no performance gain).

Signed-off-by: Kyungsik Lee <kyungsik.lee@lge.com>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-19 16:29:42 +08:00
Chris Ball
8f63795c60 mmc: sdhci-pxav3: dt: Support "cd-gpios" property
Tested on OLPC XO-4/MMP3, where the card detection pin for one of
the controllers is a sideband GPIO.  The third cell in the cd-gpios
property controls whether the GPIO is active high/active low.

(Also, pass host_caps2 through from platdata to the mmc host.)

Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
[kliu5@marvell.com: Compile fix]
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-19 16:29:12 +08:00
Olof Johansson
a73403d85a Merge branch 'depends/tty-omap-serial' into next/cleanup
This part of the tty tree (unfortunately with all the preceding patches
as well) is a dependency for some of the OMAP cleanups, so we've pulled
it in as a dependency based on agreement with Greg.

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-16 20:04:39 -07:00
Olof Johansson
e640ca0fcb Remove the ancient omap specific atags that are no longer needed.
At some point we were planning to pass the bootloader information
 with custom atags that did not work out too well.
 
 There's no need for these any longer as the kernel has been booting
 fine without them for quite some time. And Now we have device tree
 support that can be used instead.
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Merge tag 'cleanup-omap-tags-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup

From Tony Lindgren:

Remove the ancient omap specific atags that are no longer needed.

At some point we were planning to pass the bootloader information
with custom atags that did not work out too well.

There's no need for these any longer as the kernel has been booting
fine without them for quite some time. And Now we have device tree
support that can be used instead.

* tag 'cleanup-omap-tags-for-v3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP: remove plat/board.h file
  ARM: OMAP: move debug_card_init() function
  ARM: OMAP1: move lcd pdata out of arch/arm/*
  ARM: OMAP1: move omap1_bl pdata out of arch/arm/*
  ARM: OMAP: remove the omap custom tags
  ARM: OMAP1: remove the crystal type tag parsing
  ARM: OMAP: remove the sti console workaround
  ARM: OMAP: omap3evm: cleanup revision bits
  ARM: OMAP: cleanup struct omap_board_config_kernel
  + sync to 3.6-rc5
2012-09-16 19:28:42 -07:00
Greg Kroah-Hartman
7ac3c93e5d Merge 3.6-rc6 into tty-next
This pulls in the fixes in 3.6-rc6

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-16 17:31:36 -07:00
Arnd Bergmann
e35742b034 ARM: tegra: move sdhci platform_data definition
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This the definitions for the tegra sdhci driver out of
the tegra include directories, which is the last one
for this platform.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-09-14 11:18:57 +02:00
Arnd Bergmann
293b2da1b6 ARM: pxa: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the pxa include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Paul Parsons <lost.distance@yahoo.com>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Acked-By: Stefan Schmidt <stefan@openezx.org>
Cc: Eric Miao <eric.y.miao@gmail.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Daniel Ribeiro <drwyrm@gmail.com>
Cc: Harald Welte <laforge@openezx.org>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Tomas Cech <sleep_walker@suse.cz>
Cc: Sergey Lapin <slapin@ossfans.org>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: Dan Williams <djbw@fb.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: openezx-devel@lists.openezx.org
2012-09-14 11:18:10 +02:00
Arnd Bergmann
1ef21f6343 ARM: msm: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the msm include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Chris Ball <cjb@laptop.org>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: linux-arm-msm@vger.kernel.org
2012-09-14 11:17:35 +02:00
Arnd Bergmann
82906b13a6 ARM: imx: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the imx include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Sascha Hauer <kernel@pengutronix.de>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Dan Williams <djbw@fb.com>
Cc: "Ben Dooks (embedded platforms)" <ben-linux@fluff.org>
Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Javier Martin <javier.martin@vista-silicon.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
2012-09-14 11:17:21 +02:00
Arnd Bergmann
ec2a0833e5 ARM: davinci: move platform_data definitions
Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the davinci include directories

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: "Ben Dooks" <ben-linux@fluff.org>
Cc: "Wolfram Sang" <w.sang@pengutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Liam Girdwood <lrg@ti.com>
Cc: davinci-linux-open-source@linux.davincidsp.com
2012-09-14 11:16:54 +02:00
Olof Johansson
1a87676206 Merge branch 'ofdeviceiddata' of git://git.pengutronix.de/git/ukl/linux into next/fixes-non-critical
From  "Uwe Kleine-Knig" <u.kleine-koenig@pengutronix.de>:

this is the 2nd version of this series whose goal is to make struct
of_device_id.data const. Conceptually a driver must not modify the data
contained there so making it const is the right thing.

v1 of this series was sent with Message-id:
1342182734-321-1-git-send-email-y. Changes since then are:
 - powerpc fixes
 - several new consts that were found by Arnd that are possible after
   patch 19.

Arnd suggested to take this series via arm-soc late for 3.6 in one go
because patch 19 depends on the former patches but is a precondition to
the latter and it fixes a few warnings. So getting it in via the
respective maintainer trees would need a much bigger coordination
effort. That means I prefer getting Acks over you taking the patch.

Vinod Koul already took
        dmaengine: at_hdmac: add a few const qualifiers
that is in next-20120723 as 7fd63ccdad now. Vinod, I don't follow your
pull requests, but assuming you didn't let it already pull for 3.6 I
suggest you drop it from your queue and I just take your Ack.

This series was build tested for arm (all defconfigs) and powerpc (all
defconfigs and an allyesconfig) and grep didn't find more issues. As
before it introduces a warning in drivers/regulator/twl-regulator.c.
This driver does modify its .of_match_table when a device is bound which
doesn't fits the concept of independant devices. Arnd noticed another
new warning in drivers/scsi/qlogicpti.c that isn't that easy to resolve,
because the pointer to (now) const data is passed as first argument to
scsi_host_alloc. To fix that properly struct Scsi_Host.hostt needs to
get a const, too. Alternatively I could introduce a cast removing the
const, but I don't like that.

* 'ofdeviceiddata' of git://git.pengutronix.de/git/ukl/linux: (25 commits)
  dma: tegra: make data used as *of_device_id.data const
  can: mpc5xxx_can: make data used as *of_device_id.data const
  macintosh/mediabay: make data used as *of_device_id.data const
  i2c/mpc: make data used as *of_device_id.data const
  mfd/da9052: make i2c_device_id array const
  powerpc/fsl_msi: drop unneeded cast to non-const pointer
  gpio/gpio-omap: make platformdata used as *of_device_id.data const
  of: add const to struct *of_device_id.data
  dma: tegra: make tegra_dma.chip_data a pointer to const data
  watchdog/mpc8xxx: add a const qualifier
  powerpc/celleb_pci: add a const qualifier
  powerpc/fsl_msi: add a const qualifier
  powerpc/83xx: add a const qualifier
  macintosh/mediabay: add a const qualifier
  mmc/omap_hsmmc: add a const qualifier
  i2c/mpc: add a const qualifier
  i2c/i2c-omap: add a const qualifier
  gpio/mpc8xxx: add a const qualifier
  gpio/gpio-omap.c: add a const qualifier
  misc/atmel_tc: make atmel_tc.tcb_config member point to const data

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[olof: repulled a v3 version of the branch that rebased to add some more
acked-bys and added one more patch on top for tegra]
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-09-13 00:15:00 -07:00
Chris Ball
15e8a8e429 mmc: slot-gpio: Fix missing assignment to ctx->ro_gpio
mmc_gpio_request_ro() doesn't store the requested gpio in ctx->ro_gpio.
As a result, subsequent calls to mmc_gpio_get_ro() will always fail
with -ENOSYS because the gpio number isn't available to that function.

Cc: stable <stable@vger.kernel.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-11 10:55:20 -04:00
Uwe Kleine-König
efc9b736c4 mmc/omap_hsmmc: add a const qualifier
This prepares *of_device_id.data becoming const. Without this change
the following warning would occur:

	drivers/mmc/host/omap_hsmmc.c: In function 'omap_hsmmc_probe':
	drivers/mmc/host/omap_hsmmc.c:1808: warning: initialization discards qualifiers from pointer target type

Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
2012-09-11 08:56:54 +02:00
Igor Grinberg
cf3a6ec2c0 ARM: OMAP: remove plat/board.h file
plat/board.h file is now empty - remove it.

Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: linux-mmc@vger.kernel.org
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-09-10 16:39:21 -07:00
Stephen Warren
a5b64ce64d mmc: tegra: remove useless include of <mach/*.h>
Nothing from this file is needed, so remove the include. This helps
single zImage work by reducing use of the mach-tegra/include/mach/
directory.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Chris Ball <cjb@laptop.org>
2012-09-06 11:46:59 -06:00
Sachin Kamat
0d4de8f5de mmc: via-sdmmc: Use module_pci_driver
module_pci_driver makes the code simpler by eliminating
module_init and module_exit calls.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:30 -04:00
Sachin Kamat
350e3e00fb mmc: dw_mmc-pci: Use module_pci_driver
module_pci_driver makes the code simpler by eliminating module_init
and module_exit calls.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:30 -04:00
Sachin Kamat
acc696463d mmc: sdhci-pci: Use module_pci_driver
module_pci_driver makes the code simpler by eliminating
module_init and module_exit calls.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:29 -04:00
Sachin Kamat
6f47882515 mmc: mmc_spi: Use module_spi_driver
module_spi_driver makes the code simpler by eliminating
module_init and module_exit calls.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:29 -04:00
Jingoo Han
2ad0b2494f mmc: sdhci-s3c: fix checkpatch error and warnings
This patch fixes the checkpatch error and warnings listed below:

ERROR: return is not a function, parentheses are not required
WARNING: Prefer pr_err(... to printk(KERN_ERR, ...
WARNING: quoted string split across lines
WARNING: line over 80 characters
WARNING: braces {} are not necessary for single statement blocks

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:28 -04:00
Johan Rudholm
3339d1e331 mmc: core: Do not rescan non-removable devices
If MMC_CAP_NONREMOVABLE is set, only issue a detect job on init.

Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:27 -04:00
Jaehoon Chung
36c179a98a mmc: dw_mmc: fixed a section mismatch in dw_mci_init_slot
Fixed the below message.

WARNING: drivers/mmc/host/built-in.o(.text+0x5ee8): Section mismatch in reference from the function dw_mci_probe() to the function .init.text:dw_mci_init_slot()
The function dw_mci_probe() references
the function __init dw_mci_init_slot().
This is often because dw_mci_probe lacks a __init
annotation or the annotation of dw_mci_init_slot is wrong

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:27 -04:00
Joseph Lo
b37f9d98f3 mmc: tegra: convert to device tree support only
When compiling a kernel that supports only Tegra30 and not Tegra20,
the SDHCI driver will fail to compile since the of_match_device() failure
fallback code unconditinally references soc_data_tegra20, which is only
compiled in when Tegra20 support is enabled.

In Kernel 3.7, both Tegra20 and Tegra30 will only support booting using
device tree, Hence, there is never a need to fall back to using
soc_data_tegra20 if of_mach_device() fails. Instead, make this case an
error. This removes the reference to soc_data_tegra20, and hence solves
the compile failure.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:26 -04:00
Venkatraman S
ae4bf788ee mmc: omap_hsmmc: consolidate error report handling of HSMMC IRQ
Consolidate the duplicated code around the handling of CMD_TIMEOUT,
CMD_CRC, DATA_TIMEOUT, DATA_CRC and CARD_ERR handling into a single
function.

This generally shrinks code bloat, but is also required for implementing
software based guard timers.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:24 -04:00
Venkatraman S
1f6b9fa40e mmc: omap_hsmmc: consolidate flush posted writes for HSMMC IRQs
Flushing spurious IRQs from HSMMC IP is done twice in omap_hsmmc_irq
and omap_hsmmc_do_irq.  Consolidate them to one location.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:24 -04:00
Venkatraman S
6c31b2150f mmc: omap_hsmmc: remove access to SYSCONFIG register
SYSCONFIG register of HSMMC IP is managed by the omap hwmod
abstraction layer. Resetting the IP and configuring the correct
SYSCONFIG mode is centrally managed by hwmod.

Remove code which manipulates IP reset and SYSCONFIG directly in
the driver.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:23 -04:00
Venkatraman S
8986d31bf5 mmc: omap_hsmmc: remove unused vars and includes
Some straight forward cleanup of unnecessary #include's and host
variables. Some of the verbose and redundant debug messages are
converted to use dev_vdbg.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:23 -04:00
Venkatraman S
75d569d343 mmc: omap: fix mmc_omap_report_irq to use dev_dbg macros
The function mmc_omap_report_irq uses raw printks and the actual output
was disabled by a static variable. Make the function use dev_vdbg macro
and use it under the standard CONFIG_MMC_DEBUG flag.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:22 -04:00
Venkatraman S
2976837c6e mmc: omap: remove unused variables and includes
Get rid of some unnecessary includes in the driver and
a few unused variables.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:21 -04:00
Venkatraman S
6780162c00 mmc: debugfs: Print ext_csd in ascending order
ext_csd exported through debugfs is printed in reverse order (from
byte 511 to 0), which causes confusion.
Fix the for loop to print ext_csd in natural order.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:21 -04:00
Venkatraman S
211d4fe580 mmc: core: Add TRANsfer state to non-HPI state
HPI can be issued only in programming state to bring the card to
transfer state. If the card is already in transfer state, doing
a HPI is redundant.
Fix this by adding transfer state to the list of exceptions to
doing HPI and return without error.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:20 -04:00
Sonic Zhang
7a8a43c46a mmc: bfin_sdh: Reset SD controller when resume from power saving mode.
Without reset, SD controller may stay in disable mode, SD card can't
be detected when resume from power saving mode.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:20 -04:00
Sonic Zhang
c5e4a2e4c6 mmc: bfin_sdh: Remove redundant suspend and resume setting.
mmc core suspend and resume functions had already called sdh_set_ios
with proper flags.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:19 -04:00
Sonic Zhang
4ffdcf0469 mmc: bfin_sdh: Add support for new RSI controller in bf60x
In BF60x RSI controller:
1) MMR read/write width differs.
2) PWR and CTL MMRs are merged to together.
3) ROD and PD_DAT3 bit masks are obsolete.
4) New RSI block size MMR is defined.
5) The definition of DMA descriptor set size is changed.
6) set_ios should powers up controller in 2 steps.

In addition, this patch cleans up the spin locks.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:18 -04:00
Sonic Zhang
0462566b1e mmc: bfin_sdh: limit mmc DMA segment len to 1 for bf518.
bf518 RSI dma doesn't work in array mode.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:18 -04:00
NeilBrown
1fdc90fb8f mmc: omap_hsmmc: Handle failure of regulator_get better.
1/ If regulator_get fails, return an error.  This is important if
   it failed with EPROBE_DEFER, as the probe needs to be deferred.

2/ Don't set .set_power until the regulator has been found, or
   the deferred probe will not bother calling omap_hsmmc_reg_get().

Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:16 -04:00
Julia Lawall
5fdb4505f6 mmc: vub300: add missing usb_free_urb
Add missing usb_free_urb on failure path after usb_alloc_urb.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@km exists@
local idexpression e;
expression e1,e2,e3;
type T,T1;
identifier f;
@@

* e = usb_alloc_urb(...)
... when any
    when != e = e1
    when != e1 = (T)e
    when != e1(...,(T)e,...)
    when != &e->f
if(...) { ... when != e2(...,(T1)e,...)
                 when != e3 = e
                 when forall
(
             return <+...e...+>;
|
*             return ...;
) }
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:16 -04:00
Sebastian Hesselbarth
4ee7ed0de9 mmc: sdhci-dove: DT support for sdhci-dove
This patch adds device tree support and binding documentation for
sdhci-dove.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:15 -04:00
Chao Xie
164378efe7 mmc: sdhci-pxav2, sdhci-pxav3: use clk_prepare/unprepare APIs
Prepare the clock before enabling it.

Signed-off-by: Chao Xie <xiechao.mail@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:15 -04:00
Ludovic Desroches
e919fd2000 mmc: atmel-mci: add device tree support
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:14 -04:00
Philip Rakity
77dcb3f4c3 mmc: sdhci: vmmc regulator should be explicitly enabled/disabled
The vmmc regulator should not rely on the platform code to enable it.
Expliciitly enable and disable the regulator inside the driver.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:13 -04:00
Philip Rakity
6231f3de13 mmc: sdhci: Add regulator support for vccq (voltage regualor)
On some systems the host controller does not support vccq
signaling.  This is supplied by a dedicated regulator (vqmmc).
Add support for this regulator.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:13 -04:00
Jerry Huang
137ccd46c5 mmc: eSDHC: Add ADMA mode support
The register of eSDHC Host Controller Capabilities is not compatible with
standard SDHC register, and eSDHC cannot support End Attribute in NOP ADMA
descriptor. With this patch eSDHC can works in ADMA mode and performance
can be improved.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Pan Jiafei <Jiafei.Pan@freescale.com>
Signed-off-by: Jason Jin <Jason.jin@freescale.com>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:12 -04:00
Daniel Mack
e6027b467c mmc: pxa-mci: add DT bindings
Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:12 -04:00
Paul Walmsley
75b53aee2f mmc: omap: fix broken PIO mode
After commit 26b88520b8 ("mmc:
omap_hsmmc: remove private DMA API implementation"), the Nokia N800
here stopped booting:

[    2.086181] Waiting for root device /dev/mmcblk0p1...
[    2.324066] Unhandled fault: imprecise external abort (0x406) at 0x00000000
[    2.331451] Internal error: : 406 [#1] ARM
[    2.335784] Modules linked in:
[    2.339050] CPU: 0    Not tainted  (3.6.0-rc3 #60)
[    2.344146] PC is at default_idle+0x28/0x30
[    2.348602] LR is at trace_hardirqs_on_caller+0x15c/0x1b0

...

This turned out to be due to memory corruption caused by long-broken
PIO code in drivers/mmc/host/omap.c.  (Previously, this driver had
been using DMA; but the above commit caused the MMC driver to fall
back to PIO mode with an unmodified Kconfig.)

The PIO code, added with the rest of the driver in commit
730c9b7e66 ("[MMC] Add OMAP MMC host
driver"), confused bytes with 16-bit words.  This bug caused memory
located after the PIO transfer buffer to be corrupted with transfers
larger than 32 bytes.  The driver also did not increment the buffer
pointer after the transfer occurred.  This bug resulted in data
corruption during any transfer larger than 64 bytes.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:11 -04:00
Ian Chen
3550ccdb9d mmc: card: Skip secure erase on MoviNAND; causes unrecoverable corruption.
For several MoviNAND eMMC parts, there are known issues with secure
erase and secure trim.  For these specific MoviNAND devices, we skip
these operations.

Specifically, there is a bug in the eMMC firmware that causes
unrecoverable corruption when the MMC is erased with MMC_CAP_ERASE
enabled.

References:

http://forum.xda-developers.com/showthread.php?t=1644364
https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB

Signed-off-by: Ian Chen <ian.cy.chen@samsung.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable <stable@vger.kernel.org> [3.0+]
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:10 -04:00
Doug Anderson
9623b5b919 mmc: dw_mmc: Disable low power mode if SDIO interrupts are used
The documentation for the dw_mmc part says that the low power
mode should normally only be set for MMC and SD memory and should
be turned off for SDIO cards that need interrupts detected.

The best place I could find to do this is when the SDIO interrupt
was first enabled.  I rely on the fact that dw_mci_setup_bus()
will be called when it's time to reenable.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:10 -04:00
Seungwon Jeon
e74f3a9c99 mmc: dw_mmc: fix error handling in PIO mode
Data transfer will be continued until all the bytes are transmitted,
even if data crc error occurs during a multiple-block data transfer.
This means RXDR/TXDR interrupts will occurs until data transfer is
terminated. Early setting of host->sg to NULL prevents going into
xxx_data_pio functions, hence permanent unhandled RXDR/TXDR interrupts
occurs. And checking error interrupt status in the xxx_data_pio functions
is no need because dw_mci_interrupt does do the same. This patch also
removes it.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:09 -04:00
Seungwon Jeon
9b2026a125 mmc: dw_mmc: correct mishandling error interrupt
Datasheet of SYNOPSYS mentions that DTO(Data Transfer Over) interrupt
will be raised even if some error interrupts, however it is actually
found that DTO does not occur. SYNOPSYS has confirmed this issue.
Current implementation defers the call of tasklet_schedule until DTO
when the error interrupts is happened. This patch fixes error handling.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:08 -04:00
Seungwon Jeon
182c908159 mmc: dw_mmc: amend using error interrupt status
RINTSTS status includes masked interrupts as well as unmasked.
data_status and cmd_status are set by value of RINTSTS in interrupt handler
and tasklet finally uses it to decide whether error is happened or not.
In addition, MINTSTS status is used for setting data_status in PIO.
Masked error interrupt will not be handled and that status can be considered
non-error case.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed By: Girish K S <girish.shivananjappa@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:08 -04:00
Ludovic Desroches
077d40731e mmc: atmel-mci: not busy flag has also to be used for read operations
Even if the datasheet says that the not busy flag has to be used only
for write operations, it's false except for version lesser than v2xx.

Not waiting on the not busy flag for read operations can cause the
controller to hang-up during the initialization of some SD cards
with DMA after the first CMD6 -- the next command is sent too early.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Cc: stable <stable@vger.kernel.org> [3.5, 3.6]
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:07 -04:00
Shawn Guo
74f330bcea mmc: sdhci-esdhc: break out early if clock is 0
Since commit 30832ab56 ("mmc: sdhci: Always pass clock request value
zero to set_clock host op") was merged, esdhc_set_clock starts hitting
"if (clock == 0)" where ESDHC_SYSTEM_CONTROL has been operated.  This
causes SDHCI card-detection function being broken.  Fix the regression
by moving "if (clock == 0)" above ESDHC_SYSTEM_CONTROL operation.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:06 -04:00
Lauri Hintsala
fc108d24d3 mmc: mxs-mmc: fix deadlock caused by recursion loop
Release the lock before mmc_signal_sdio_irq is called by
mxs_mmc_enable_sdio_irq.

Backtrace:
[   65.470000] =============================================
[   65.470000] [ INFO: possible recursive locking detected ]
[   65.470000] 3.5.0-rc5 #2 Not tainted
[   65.470000] ---------------------------------------------
[   65.470000] ksdioirqd/mmc0/73 is trying to acquire lock:
[   65.470000]  (&(&host->lock)->rlock#2){-.-...}, at: [<bf054120>] mxs_mmc_enable_sdio_irq+0x18/0xdc [mxs_mmc]
[   65.470000]
[   65.470000] but task is already holding lock:
[   65.470000]  (&(&host->lock)->rlock#2){-.-...}, at: [<bf054120>] mxs_mmc_enable_sdio_irq+0x18/0xdc [mxs_mmc]
[   65.470000]
[   65.470000] other info that might help us debug this:
[   65.470000]  Possible unsafe locking scenario:
[   65.470000]
[   65.470000]        CPU0
[   65.470000]        ----
[   65.470000]   lock(&(&host->lock)->rlock#2);
[   65.470000]   lock(&(&host->lock)->rlock#2);
[   65.470000]
[   65.470000]  *** DEADLOCK ***
[   65.470000]
[   65.470000]  May be due to missing lock nesting notation
[   65.470000]
[   65.470000] 1 lock held by ksdioirqd/mmc0/73:
[   65.470000]  #0:  (&(&host->lock)->rlock#2){-.-...}, at: [<bf054120>] mxs_mmc_enable_sdio_irq+0x18/0xdc [mxs_mmc]
[   65.470000]
[   65.470000] stack backtrace:
[   65.470000] [<c0014990>] (unwind_backtrace+0x0/0xf4) from [<c005ccb8>] (__lock_acquire+0x14f8/0x1b98)
[   65.470000] [<c005ccb8>] (__lock_acquire+0x14f8/0x1b98) from [<c005d3f8>] (lock_acquire+0xa0/0x108)
[   65.470000] [<c005d3f8>] (lock_acquire+0xa0/0x108) from [<c02f671c>] (_raw_spin_lock_irqsave+0x48/0x5c)
[   65.470000] [<c02f671c>] (_raw_spin_lock_irqsave+0x48/0x5c) from [<bf054120>] (mxs_mmc_enable_sdio_irq+0x18/0xdc [mxs_mmc])
[   65.470000] [<bf054120>] (mxs_mmc_enable_sdio_irq+0x18/0xdc [mxs_mmc]) from [<bf0541d0>] (mxs_mmc_enable_sdio_irq+0xc8/0xdc [mxs_mmc])
[   65.470000] [<bf0541d0>] (mxs_mmc_enable_sdio_irq+0xc8/0xdc [mxs_mmc]) from [<c0219b38>] (sdio_irq_thread+0x1bc/0x274)
[   65.470000] [<c0219b38>] (sdio_irq_thread+0x1bc/0x274) from [<c003c324>] (kthread+0x8c/0x98)
[   65.470000] [<c003c324>] (kthread+0x8c/0x98) from [<c00101ac>] (kernel_thread_exit+0x0/0x8)
[   65.470000] BUG: spinlock lockup suspected on CPU#0, ksdioirqd/mmc0/73
[   65.470000]  lock: 0xc3358724, .magic: dead4ead, .owner: ksdioirqd/mmc0/73, .owner_cpu: 0
[   65.470000] [<c0014990>] (unwind_backtrace+0x0/0xf4) from [<c01b46b0>] (do_raw_spin_lock+0x100/0x144)
[   65.470000] [<c01b46b0>] (do_raw_spin_lock+0x100/0x144) from [<c02f6724>] (_raw_spin_lock_irqsave+0x50/0x5c)
[   65.470000] [<c02f6724>] (_raw_spin_lock_irqsave+0x50/0x5c) from [<bf054120>] (mxs_mmc_enable_sdio_irq+0x18/0xdc [mxs_mmc])
[   65.470000] [<bf054120>] (mxs_mmc_enable_sdio_irq+0x18/0xdc [mxs_mmc]) from [<bf0541d0>] (mxs_mmc_enable_sdio_irq+0xc8/0xdc [mxs_mmc])
[   65.470000] [<bf0541d0>] (mxs_mmc_enable_sdio_irq+0xc8/0xdc [mxs_mmc]) from [<c0219b38>] (sdio_irq_thread+0x1bc/0x274)
[   65.470000] [<c0219b38>] (sdio_irq_thread+0x1bc/0x274) from [<c003c324>] (kthread+0x8c/0x98)
[   65.470000] [<c003c324>] (kthread+0x8c/0x98) from [<c00101ac>] (kernel_thread_exit+0x0/0x8)

Reported-by: Attila Kinali <attila@kinali.ch>
Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:06 -04:00
Lauri Hintsala
1af36b2a99 mmc: mxs-mmc: fix deadlock in SDIO IRQ case
Release the lock before mmc_signal_sdio_irq is called by mxs_mmc_irq_handler.

Backtrace:
[   79.660000] =============================================
[   79.660000] [ INFO: possible recursive locking detected ]
[   79.660000] 3.4.0-00009-g3e96082-dirty #11 Not tainted
[   79.660000] ---------------------------------------------
[   79.660000] swapper/0 is trying to acquire lock:
[   79.660000]  (&(&host->lock)->rlock#2){-.....}, at: [<c026ea3c>] mxs_mmc_enable_sdio_irq+0x18/0xd4
[   79.660000]
[   79.660000] but task is already holding lock:
[   79.660000]  (&(&host->lock)->rlock#2){-.....}, at: [<c026f744>] mxs_mmc_irq_handler+0x1c/0xe8
[   79.660000]
[   79.660000] other info that might help us debug this:
[   79.660000]  Possible unsafe locking scenario:
[   79.660000]
[   79.660000]        CPU0
[   79.660000]        ----
[   79.660000]   lock(&(&host->lock)->rlock#2);
[   79.660000]   lock(&(&host->lock)->rlock#2);
[   79.660000]
[   79.660000]  *** DEADLOCK ***
[   79.660000]
[   79.660000]  May be due to missing lock nesting notation
[   79.660000]
[   79.660000] 1 lock held by swapper/0:
[   79.660000]  #0:  (&(&host->lock)->rlock#2){-.....}, at: [<c026f744>] mxs_mmc_irq_handler+0x1c/0xe8
[   79.660000]
[   79.660000] stack backtrace:
[   79.660000] [<c0014bd0>] (unwind_backtrace+0x0/0xf4) from [<c005f9c0>] (__lock_acquire+0x1948/0x1d48)
[   79.660000] [<c005f9c0>] (__lock_acquire+0x1948/0x1d48) from [<c005fea0>] (lock_acquire+0xe0/0xf8)
[   79.660000] [<c005fea0>] (lock_acquire+0xe0/0xf8) from [<c03a8460>] (_raw_spin_lock_irqsave+0x44/0x58)
[   79.660000] [<c03a8460>] (_raw_spin_lock_irqsave+0x44/0x58) from [<c026ea3c>] (mxs_mmc_enable_sdio_irq+0x18/0xd4)
[   79.660000] [<c026ea3c>] (mxs_mmc_enable_sdio_irq+0x18/0xd4) from [<c026f7fc>] (mxs_mmc_irq_handler+0xd4/0xe8)
[   79.660000] [<c026f7fc>] (mxs_mmc_irq_handler+0xd4/0xe8) from [<c006bdd8>] (handle_irq_event_percpu+0x70/0x254)
[   79.660000] [<c006bdd8>] (handle_irq_event_percpu+0x70/0x254) from [<c006bff8>] (handle_irq_event+0x3c/0x5c)
[   79.660000] [<c006bff8>] (handle_irq_event+0x3c/0x5c) from [<c006e6d0>] (handle_level_irq+0x90/0x110)
[   79.660000] [<c006e6d0>] (handle_level_irq+0x90/0x110) from [<c006b930>] (generic_handle_irq+0x38/0x50)
[   79.660000] [<c006b930>] (generic_handle_irq+0x38/0x50) from [<c00102fc>] (handle_IRQ+0x30/0x84)
[   79.660000] [<c00102fc>] (handle_IRQ+0x30/0x84) from [<c000f058>] (__irq_svc+0x38/0x60)
[   79.660000] [<c000f058>] (__irq_svc+0x38/0x60) from [<c0010520>] (default_idle+0x2c/0x40)
[   79.660000] [<c0010520>] (default_idle+0x2c/0x40) from [<c0010a90>] (cpu_idle+0x64/0xcc)
[   79.660000] [<c0010a90>] (cpu_idle+0x64/0xcc) from [<c04ff858>] (start_kernel+0x244/0x2c8)
[   79.660000] BUG: spinlock lockup on CPU#0, swapper/0
[   79.660000]  lock: c398cb2c, .magic: dead4ead, .owner: swapper/0, .owner_cpu: 0
[   79.660000] [<c0014bd0>] (unwind_backtrace+0x0/0xf4) from [<c01ddb1c>] (do_raw_spin_lock+0xf0/0x144)
[   79.660000] [<c01ddb1c>] (do_raw_spin_lock+0xf0/0x144) from [<c03a8468>] (_raw_spin_lock_irqsave+0x4c/0x58)
[   79.660000] [<c03a8468>] (_raw_spin_lock_irqsave+0x4c/0x58) from [<c026ea3c>] (mxs_mmc_enable_sdio_irq+0x18/0xd4)
[   79.660000] [<c026ea3c>] (mxs_mmc_enable_sdio_irq+0x18/0xd4) from [<c026f7fc>] (mxs_mmc_irq_handler+0xd4/0xe8)
[   79.660000] [<c026f7fc>] (mxs_mmc_irq_handler+0xd4/0xe8) from [<c006bdd8>] (handle_irq_event_percpu+0x70/0x254)
[   79.660000] [<c006bdd8>] (handle_irq_event_percpu+0x70/0x254) from [<c006bff8>] (handle_irq_event+0x3c/0x5c)
[   79.660000] [<c006bff8>] (handle_irq_event+0x3c/0x5c) from [<c006e6d0>] (handle_level_irq+0x90/0x110)
[   79.660000] [<c006e6d0>] (handle_level_irq+0x90/0x110) from [<c006b930>] (generic_handle_irq+0x38/0x50)
[   79.660000] [<c006b930>] (generic_handle_irq+0x38/0x50) from [<c00102fc>] (handle_IRQ+0x30/0x84)
[   79.660000] [<c00102fc>] (handle_IRQ+0x30/0x84) from [<c000f058>] (__irq_svc+0x38/0x60)
[   79.660000] [<c000f058>] (__irq_svc+0x38/0x60) from [<c0010520>] (default_idle+0x2c/0x40)
[   79.660000] [<c0010520>] (default_idle+0x2c/0x40) from [<c0010a90>] (cpu_idle+0x64/0xcc)
[   79.660000] [<c0010a90>] (cpu_idle+0x64/0xcc) from [<c04ff858>] (start_kernel+0x244/0x2c8)

Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:05 -04:00
Sonic Zhang
660d9a9c4f mmc: bfin_sdh: fix dma_desc_array build error
Descriptor array structure has been moved into blackfin dma.h head file.
This patch fix below error:

drivers/mmc/host/bfin_sdh.c:52:8: error: redefinition of 'struct
dma_desc_array'
make[4]: *** [drivers/mmc/host/bfin_sdh.o] Error 1

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-09-04 13:58:04 -04:00
Masanari Iida
7122bbb0d1 mmc: fix comment typos
Correct spelling typo in drivers/mmc

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-09-01 09:52:48 -07:00
Tejun Heo
3b07e9ca26 workqueue: deprecate system_nrt[_freezable]_wq
system_nrt[_freezable]_wq are now spurious.  Mark them deprecated and
convert all users to system[_freezable]_wq.

If you're cc'd and wondering what's going on: Now all workqueues are
non-reentrant, so there's no reason to use system_nrt[_freezable]_wq.
Please use system[_freezable]_wq instead.

This patch doesn't make any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-By: Lai Jiangshan <laijs@cn.fujitsu.com>

Cc: Jens Axboe <axboe@kernel.dk>
Cc: David Airlie <airlied@linux.ie>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowells@redhat.com>
2012-08-20 14:51:24 -07:00
Marek Vasut
65defb9b3b mmc: spi: Pull out common DMA parts from MXS MMC
These parts will be used by the MXS SPI driver too.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-17 22:54:15 +01:00
Marek Vasut
1308239858 mmc: spi: Pull out the SSP clock configuration function
Pull out the MMC clock configuration function and make it
into SSP clock configuration function, so it can be used by
the SPI driver too.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-17 22:53:00 +01:00
Marek Vasut
829c1bf40b mmc: spi: Pull out parts shared between MMC and SPI
Abstract out the common part of private data shared between MMC
and SPI. These shall later allow to use common clock configuration
function.

Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-17 22:52:51 +01:00
Marek Vasut
600a991f98 mmc: spi: Rename IMX2[38]_MMC to IMX2[38]_SSP
Since the SSP controller can act as both SPI and MMC host,
renaming the enum to properly reflect the naming seems
appropriate.

Based on previous attempt by:
Fabio Estevam <fabio.estevam@freescale.com>

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-17 22:52:31 +01:00
Marek Vasut
8be3d3b2ac mmc: spi: Move SSP register definitions into separate file
Move the definitions into separate file so separate SPI driver can be
implemented. The SSP controller in MXS can act both as a MMC host and
as a SPI host.

Based on previous attempt by:
Fabio Estevam <fabio.estevam@freescale.com>

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-08-17 22:52:14 +01:00
Jiri Slaby
734cc17838 TTY: use tty_port_register_device
Currently we have no way to assign tty->port while performing tty
installation. There are two ways to provide the link tty_struct =>
tty_port. Either by calling tty_port_install from tty->ops->install or
tty_port_register_device called instead of tty_register_device when
the device is being set up after connected.

In this patch we modify most of the drivers to do the latter. When the
drivers use tty_register_device and we have tty_port already, we
switch to tty_port_register_device. So we have the tty_struct =>
tty_port link for free for those.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-13 16:50:19 -07:00
Greg Kroah-Hartman
c87985a3ce Merge tty-next into 3.6-rc1
This handles the merge issue in:
	arch/um/drivers/line.c
	arch/um/drivers/line.h
And resolves the duplicate patches that were in both trees do to the
tty-next branch not getting merged into 3.6-rc1.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-08-06 09:48:31 -07:00
Linus Torvalds
a6dc77254b Merge branch 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM DMA engine updates from Russell King:
 "This looks scary at first glance, but what it is is:
   - a rework of the sa11x0 DMA engine driver merged during the previous
     cycle, to extract a common set of helper functions for DMA engine
     implementations.
   - conversion of amba-pl08x.c to use these helper functions.
   - addition of OMAP DMA engine driver (using these helper functions),
     and conversion of some of the OMAP DMA users to use DMA engine.

  Nothing in the helper functions is ARM specific, so I hope that other
  implementations can consolidate some of their code by making use of
  these helpers.

  This has been sitting in linux-next most of the merge cycle, and has
  been tested by several OMAP folk.  I've tested it on sa11x0 platforms,
  and given it my best shot on my broken platforms which have the
  amba-pl08x controller.

  The last point is the addition to feature-removal-schedule.txt, which
  will have a merge conflict.  Between myself and TI, we're planning to
  remove the old TI DMA implementation next year."

Fix up trivial add/add conflicts in Documentation/feature-removal-schedule.txt
and drivers/dma/{Kconfig,Makefile}

* 'dmaengine' of git://git.linaro.org/people/rmk/linux-arm: (53 commits)
  ARM: 7481/1: OMAP2+: omap2plus_defconfig: enable OMAP DMA engine
  ARM: 7464/1: mmc: omap_hsmmc: ensure probe returns error if DMA channel request fails
  Add feature removal of old OMAP private DMA implementation
  mtd: omap2: remove private DMA API implementation
  mtd: omap2: add DMA engine support
  spi: omap2-mcspi: remove private DMA API implementation
  spi: omap2-mcspi: add DMA engine support
  ARM: omap: remove mmc platform data dma_mask and initialization
  mmc: omap: remove private DMA API implementation
  mmc: omap: add DMA engine support
  mmc: omap_hsmmc: remove private DMA API implementation
  mmc: omap_hsmmc: add DMA engine support
  dmaengine: omap: add support for cyclic DMA
  dmaengine: omap: add support for setting fi
  dmaengine: omap: add support for returning residue in tx_state method
  dmaengine: add OMAP DMA engine driver
  dmaengine: sa11x0-dma: add cyclic DMA support
  dmaengine: sa11x0-dma: fix DMA residue support
  dmaengine: PL08x: ensure all descriptors are freed when channel is released
  dmaengine: PL08x: get rid of write only pool_ctr and free_txd locking
  ...
2012-08-01 16:41:07 -07:00
Kevin Hilman
04e8c7bc2c ARM: 7464/1: mmc: omap_hsmmc: ensure probe returns error if DMA channel request fails
If dma_request_channel() fails (e.g. because DMA enine is not built
into the kernel), the return value from probe is zero causing the
driver to be bound to the device even though probe failed.

To fix, ensure that probe returns an error value when a DMA channel
request fail.

Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-31 12:06:26 +01:00
Russell King
4e078fbd58 mmc: omap: remove private DMA API implementation
Remove the private DMA API implementation from omap, making it use
entirely the DMA engine API.

Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-31 12:06:23 +01:00
Russell King
3451c06754 mmc: omap: add DMA engine support
Add DMA engine support to the OMAP driver.  This supplements the
private DMA API implementation contained within this driver, and the
driver can be switched at build time between using DMA engine and the
private DMA API.

Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-31 12:06:23 +01:00
Russell King
26b88520b8 mmc: omap_hsmmc: remove private DMA API implementation
Remove the private DMA API implementation from omap_hsmmc, making it
use entirely the DMA engine API.

Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-31 12:06:22 +01:00
Russell King
c5c98927d7 mmc: omap_hsmmc: add DMA engine support
Add DMA engine support to the OMAP HSMMC driver.  This supplements the
private DMA API implementation contained within this driver, and the
driver can be switched at build time between using DMA engine and the
private DMA API.

Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-31 12:06:22 +01:00
Linus Torvalds
25918f9811 ARM: SoC fixes
A mixed bag of fixes, some for merge window fallout (tegra, MXS), and
 a short series of fixes for marvell platforms that didn't make it in
 before 3.5.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A mixed bag of fixes, some for merge window fallout (tegra, MXS), and
  a short series of fixes for marvell platforms that didn't make it in
  before 3.5."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: mxs: fix compile error caused by prom_update_property change
  ARM: dt: tegra trimslice: enable USB2 port
  ARM: dt: tegra trimslice: add vbus-gpio property
  ARM: vt8500: Add maintainer for VT8500 architecture
  ARM: Kirkwood: Replace mrvl with marvell
  ARM: Orion: fix driver probe error handling with respect to clk
  ARM: Dove: Fixup ge00 initialisation
  ARM: Kirkwood: Fix PHY disable clk problems
  ARM: Kirkwood: Ensure runit clock always ticks.
  ARM: versatile: Don't use platform clock for Integrator & VE
  ARM: tegra: harmony: add regulator supply name and its input supply
2012-07-26 20:29:52 -07:00
Arnd Bergmann
c1f9c4227c Merge branch 'v3.5-rc7-fixes' of git://github.com/lunn/linux into fixes
From Andrew Lunn <andrew@lunn.ch>:

* 'v3.5-rc7-fixes' of git://github.com/lunn/linux:
  ARM: Kirkwood: Replace mrvl with marvell
  ARM: Orion: fix driver probe error handling with respect to clk
  ARM: Dove: Fixup ge00 initialisation
  ARM: Kirkwood: Fix PHY disable clk problems
  ARM: Kirkwood: Ensure runit clock always ticks.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-25 21:37:09 +02:00
Simon Baatz
baffab28b1 ARM: Orion: fix driver probe error handling with respect to clk
The clk patches added code to get and enable clocks in the
respective driver probe functions.  If the probe function failed
for some reason after enabling the clock, the clock was not
disabled again in many cases.

Signed-off-by: Simon Baatz <gmbnomis@gmail.com>
Signed-off-by: Andrew Lumm <andrew@lunn.ch>
2012-07-25 17:06:21 +02:00
Linus Torvalds
c511dc1fb6 Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine update from Vinod Koul:
 "This time we have a new dmaengine driver from the tegra folks.  Also
  we have Guennadi's cleanup of sh drivers which incudes a library for
  sh drivers.  And the usual odd fixes in bunch of drivers and some nice
  cleanup of dw_dmac from Andy."

Fix up conflicts in drivers/mmc/host/sh_mmcif.c

* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (46 commits)
  dmaengine: Cleanup logging messages
  mmc: sh_mmcif: switch to the new DMA channel allocation and configuration
  dma: sh: provide a migration path for slave drivers to stop using .private
  dma: sh: use an integer slave ID to improve API compatibility
  dmaengine: shdma: prepare to stop using struct dma_chan::private
  sh: remove unused DMA device pointer from SIU platform data
  ASoC: siu: don't use DMA device for channel filtering
  dmaengine: shdma: (cosmetic) simplify a static function
  dmaengine: at_hdmac: add a few const qualifiers
  dw_dmac: use 'u32' for LLI structure members, not dma_addr_t
  dw_dmac: mark dwc_dump_lli inline
  dma: mxs-dma: Export missing symbols from mxs-dma.c
  dma: shdma: convert to the shdma base library
  ASoC: fsi: prepare for conversion to the shdma base library
  usb: renesas_usbhs: prepare for conversion to the shdma base library
  ASoC: siu: prepare for conversion to the shdma base library
  serial: sh-sci: prepare for conversion to the shdma base library
  mmc: sh_mobile_sdhi: prepare for conversion to the shdma base library
  mmc: sh_mmcif: remove unneeded struct sh_mmcif_dma, prepare to shdma conversion
  dma: shdma: prepare for conversion to the shdma base library
  ...
2012-07-24 17:12:54 -07:00
Linus Torvalds
97e7292ab5 arm-soc: clk changes
Clock support is moving to the clk subsystem. These tegra, omap and imx
 changes are for code that is still platform specific and not (yet)
 part of that subsystem.
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Merge tag 'clk' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc clk changes from Arnd Bergmann:
 "Clock support is moving to the clk subsystem.  These tegra, omap and
  imx changes are for code that is still platform specific and not (yet)
  part of that subsystem."

Fix up conflicts in arch/arm/mach-{imx/clk-imx51-imx53.c,omap2/Makefile}

* tag 'clk' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (23 commits)
  ARM: imx: clk-imx31: Fix clock id for rnga driver
  ARM: imx: add missing item to the list of clock event modes
  ARM: i.MX5x CSPI: Fixed clock name for CSPI
  ARM: i.MX5x clocks: Fix GPT clocks
  ARM: i.MX5x clocks: Fix parent for PWM clocks
  ARM: i.MX5x clocks: Add EPIT support
  ARM: mx27: Reenable silicon version print
  ARM: clk-imx27: Fix rtc clock id
  ARM: tegra: Provide clock for only one PWM controller
  ARM: tegra: Fix PWM clock programming
  ARM: OMAP3+: clock33xx: Add AM33XX clock tree data
  ARM: OMAP3+: clock: Move common clksel_rate & clock data to common file
  ARM: tegra: dma: rename driver name for clock to "tegra-apbdma"
  ARM: tegra: Remove second instance of uart clk
  crypto: add clk_prepare/clk_unprepare
  ASoC: tegra: add clk_prepare/clk_unprepare
  staging: nvec: add clk_prepare/clk_unprepare
  spi/tegra: add clk_prepare/clk_unprepare
  Input: tegra-kbc - add clk_prepare/clk_unprepare
  USB: ehci-tegra: add clk_prepare/clk_unprepare
  ...
2012-07-23 17:51:03 -07:00
Linus Torvalds
451ce7f9cf arm-soc: general cleanups
These are all boring changes, moving stuff around or renaming things
 mostly, and also getting rid of stuff that is duplicate or should
 not be there to start with. Platform-wise this is all over the place,
 mainly omap, samsung, at91, imx and tegra.
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Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull general arm-soc cleanups from Arnd Bergmann:
 "These are all boring changes, moving stuff around or renaming things
  mostly, and also getting rid of stuff that is duplicate or should not
  be there to start with.  Platform-wise this is all over the place,
  mainly omap, samsung, at91, imx and tegra."

Resolve trivial conflict in arch/arm/mach-omap2/clockdomains3xxx_data.c

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (67 commits)
  ARM: clps711x: Remove the setting of the time
  ARM: clps711x: Removed superfluous transform virt_to_bus and related functions
  ARM: clps711x/p720t: Replace __initcall by .init_early call
  ARM: S3C24XX: Remove unused GPIO definitions for Openmoko GTA02 board
  ARM: S3C24XX: Remove unused GPIO definitions for port J
  ARM: S3C24XX: Remove unused GPA, GPE, GPH bank GPIO aliases
  ARM: S3C24XX: Convert the touchscreen setup code to common GPIO API
  ARM: S3C24XX: Convert the PM code to gpiolib API
  ARM: S3C24XX: Convert QT2410 board file to the gpiolib API
  ARM: S3C24XX: Convert SMDK board file to the gpiolib API
  ARM: S3C24XX: Free the backlight gpio requested in Mini2440 board code
  ARM: imx: remove unused pdata from device macros
  ARM: imx: Kconfig: Remove IMX_HAVE_PLATFORM_IMX_SSI from MACH_MX25_3DS
  ARM: at91: fix new build errors
  ARM: at91: add AIC5 support
  ARM: at91: remove mach/irqs.h
  ARM: at91: sparse irq support
  ARM: at91: at91 based machines specify their own irq handler at run time
  ARM: at91: remove static irq priorities for sam9x5
  ARM: at91: add of irq priorities support
  ...
2012-07-23 16:04:15 -07:00
Sebastian Hesselbarth
30b87c60e9 mmc: sdhci-dove: Prepare for common clock framework
As mach-dove is moving towards common clock framework prepare
the sdhci driver to grab its clock.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 16:42:48 -04:00
Sebastian Hesselbarth
a9ca1d5477 mmc: sdhci-dove: Add SDHCI_QUIRK_NO_HISPD_BIT
The sdio controller on dove doesn't have a bit to indicate
high-speed. With the quirk set it fixes accessing high-speed
sdcards.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 16:42:47 -04:00
Kevin Hilman
9c17d08ca1 mmc: omap_hsmmc: ensure probe returns error upon resource failure
If platform_get_resource_by_name() fails, driver probe is aborted an
should return an error so the driver is not bound to the device.

However, in the current error path of platform_get_resource_by_name(),
probe returns zero since the return value (ret) is not properly set.
With a zero return value, the driver core assumes probe was successful
and will bind the driver to the device.

Fix this by ensuring that probe returns an error code in this failure
path.

Signed-off-by: Kevin Hilman <khilman@ti.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 16:42:47 -04:00
Marek Vasut
b6e76f10af mmc: mxs-mmc: Add wp-inverted property
The write-protect GPIO is inverted on some boards. Handle such case.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 16:42:46 -04:00
Wilson Callan
9a0985b78d mmc: esdhc: Fix DMA_MASK to not break mx25 DMA access
Patch to not set reserved bits in i.MX25 PROCTL register.  DMA stops
working if those bits get set.

Signed-off-by: Wilson Callan <wilson.callan@savantsystems.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 16:42:30 -04:00
Aaron Lu
108ecc4cf9 mmc: core: reset signal voltage on power up
Add a call to mmc_set_signal_voltage() to set signal voltage to 3.3v in
mmc_power_up so that we do not need to touch signal voltage setting in
mmc/sd/sdio init functions and rescan function.

For mmc/sd cards, when doing a suspend/resume cycle, consider the unsafe
resume case, the card will lose its power and when powered on again, we
will set signal voltage to 3.3v in mmc_power_up before its resume function
gets called, which will re-init the card.

And for sdio cards, when doing a suspend/resume cycle, consider the unsafe
resume case, the card will either lose its power or not depending on if it
wants to wakeup the host. If power is not maintained, it is the same case as
mmc/sd cards. If power is maintained, mmc_power_up will not be called and
the card's signal voltage will remain at the last setting.

Signed-off-by: Aaron Lu <aaron.lu@amd.com>
Tested-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:53 -04:00
Aaron Lu
55c4665ea0 mmc: sd: Fix sd current limit setting
Host has different current capabilities at different voltages, we need
to record these settings seperately. The defined voltages are 1.8/3.0/3.3.
For other voltages, we do not touch current limit setting.

Before we set the current limit for the sd card, find out the host's
operating voltage first and then find out the current capabilities of
the host at that voltage to set the current limit.

Signed-off-by: Aaron Lu <aaron.lu@amd.com>
Reviewed-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:52 -04:00
Rajendra Nayak
94c1814945 mmc: omap_hsmmc: add clk_prepare and clk_unprepare
In preparation for OMAP moving to the Common Clock Framework (CCF)
add clk_prepare() and clk_unprepare() for the hsmmc clocks.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:52 -04:00
Philip Rakity
38cfc2f71c mmc: sdhci: When a UHS switch fails, cycle power if regulator is used
Power needs to be removed from the card when switching to 1.8v fails.

If a regulator is used to control vmmc we need to turn the
regulator off and then back on otherwise power will not be
removed from the card.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Reviewed-by: Aaron Lu <aaron.lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:51 -04:00
Nicolas Ferre
8a4de07e05 mmc: atmel-mci: modify CLKDIV displaying in debugfs
Modify clock division displaying in debugfs for matching
the new CLKDIV,CLKODD user interface arrangement.
Is using the has_odd_clk_div property to choose the proper format.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:50 -04:00
Nicolas Ferre
41b4e9a194 mmc: atmel-mci: fix incorrect setting of host->data to NULL
Setting host->data to NULL is incorrect sequence in STATE_SENDING_STOP
state of FSM: This early setting leads to the skip of dma_unmap_sg()
in atmci_dma_cleanup() which is a bug.

Idea taken from dw_mmc by Seungwon Jeon.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:50 -04:00
Daniel Drake
eb6d5ae1c9 mmc: sdhci: poll for card even when card is logically unremovable
The Marvell CaFe is now marked as having bad card detection to fix
a problem during system resume.

Now on the OLPC XO-1 we are facing the issue that the card is marked
as logically unremovable (via MMC_UNSAFE_RESUME), which means that
mmc_card_is_removable considers the card non-removable. The existing
code logic decides not to poll for card presence in this case, and
card detection is also disabled because of the quirk being set.
This means that no SD cards are detected when inserted after boot.

Refine the logic to enable card presence polling in the case when
a card is logically unremovable, only avoiding the poll in the case
when the card is physically non-removable (denoted with
MMC_CAP_NONREMOVABLE).

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:49 -04:00
Aaron Lu
973905feab mmc: sdhci: Introduce new flag SDHCI_USING_RETUNING_TIMER
Add a new flag of SDHCI_USING_RETUNING_TIMER to represent if the host
is using a retuning timer for the card inserted.

This flag is set when the host does tuning the first time for the card
and the host's retuning mode is 1. This flag is used afterwards whenever
needs to decide if the host is currently using a retuning timer.

This flag is cleared when the card is removed in sdhci_reinit.

The set/clear of the flag and the start/stop of the retuning timer is
associated with the card's init/remove time, so there is no need to
touch it when the host is to be removed as at that time the card should
have already been removed.

Signed-off-by: Aaron Lu <aaron.lu@amd.com>
Reviewed-by: Girish K S <girish.shivananjappa@linaro.org>
Reviewed-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:49 -04:00
Liu Chuansheng
aa6439dadd mmc: sdio: Change pr_warning to pr_warn_ratelimited
When debugging one bad issue, got lots of pr_warning messages
"queuing unknown CIS tuple" which caused a printk storm and
flooded the console.

This patch changes the pr_warning to use pr_warn_ratelimited.

Signed-off-by: Liu Chuansheng <chuansheng.liu@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:48 -04:00
Aaron Lu
a39ca6ae0a mmc: core: Simplify and fix for SD switch processing
In mmc_read_switch, just do a one time mode 0 switch command to get the
support bits information, no need to do multiple times as the support
bits do not change with different arguments.

And no need to check current limit support bits, as these bits are
fixed according to the signal voltage. If the signal voltage is 1.8V,
the support bits would be 0xf and if the signal voltage is 3.3V, the
support bits would be 0x01. We will check host's ability to set the
current limit.

Signed-off-by: Aaron Lu <aaron.lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:47 -04:00
Aaron Lu
b67c6b411d mmc: sdhci: restore host settings when card is removed
Some of the host settings are affected by different cards inserted, e.g.
when an UHS-I card is inserted, the SDHCI_NEEDS_RETUING flag might be
set when the tuning timer expired and host's max_blk_count will be
reduced to make sure the data transfer for a command does not exceed 4MiB
to meet the retuning mode 1's requirement.

When the card is removed, we should restore the original setting of the
host since we can't be sure the next card being inserted will still be
an UHS-I card that needs tuning. The original setting include its
max_blk_count and no set of the flag of SDHCI_NEEDS_RETUNING.

Signed-off-by: Aaron Lu <aaron.lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:47 -04:00
Aaron Lu
473b095a72 mmc: sdhci: fix incorrect command used in tuning
For SD hosts using retuning mode 1, when retuning timer expired, it will
need to do retuning in sdhci_request before processing the actual
request. But the retuning command is fixed: cmd19 for SD card and cmd21
for eMMC card, so we can't use the original request's command to do the
tuning.

And since the tuning command depends on the card type attached to the
host, we will need to know the card type to use the correct tuning
command.

Signed-off-by: Aaron Lu <aaron.lu@amd.com>
Reviewed-by: Philip Rakity <prakity@marvell.com>
Cc: stable <stable@vger.kernel.org> [3.3+]
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:46 -04:00
Daniel Drake
55fc05b741 mmc: sdhci-pci: CaFe has broken card detection
At http://dev.laptop.org/ticket/11980 we have determined that the
Marvell CaFe SDHCI controller reports bad card presence during
resume. It reports that no card is present even when it is.
This is a regression -- resume worked back around 2.6.37.

Around 400ms after resuming, a "card inserted" interrupt is
generated, at which point it starts reporting presence.

Work around this hardware oddity by setting the
SDHCI_QUIRK_BROKEN_CARD_DETECTION flag.
Thanks to Chris Ball for helping with diagnosis.

Signed-off-by: Daniel Drake <dsd@laptop.org>
[stable@: please apply to 3.0+]
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:46 -04:00
Mark Brown
0fc81ee310 mmc: sdhci: Report failure reasons for all cases in sdhci_add_host()
For most error conditions sdhci_add_host() will print a diagnostic
message indicating why it failed but there are a few cases where this
does not happen. Add error messages in these cases to aid diagnosis.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:45 -04:00
Sylwester Nawrocki
b9929f0eb4 mmc: s3cmci: Convert s3cmci driver to gpiolib API
The s3c2410_gpio* calls are obsolete and have been scheduled for
removal since several kernel releases. Remove them and use common
gpiolib API.

This patch is a prerequisite for removal of the S3C24XX SoC specific
arch/arm/plat-samsung/include/gpio-fns.h header.

Tested on Micro2440-SDK.

Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:44 -04:00
Philip Rakity
bd6a8c30fa mmc: sdhci: Allow caps[1] to be set via SDHCI_QUIRK_MISSING_CAPS
Currently only the capability_0 register can be set if
SDHCI_QUIRK_MISSING_CAPS is defined.  This is a problem when
the capability_1 register also needs changing.  Use the quirk
SDHCI_QUIRK_MISSING_CAPS to allow both registers to be set.

Redefining caps[1] is useful when the board design does not
support 1.8v vccq so UHS modes are not available.  The code that
calls sdhci_add_host can then detect this condition and adjust
the caps so the UHS mode will not be attempted on UHS cards.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:44 -04:00
Shawn Guo
4dc5a79f13 mmc: mxs-mmc: enable regulator for mmc slot
If bootloader or platform initialization code does not enable the
power supply to mmc slot, we need to do it in mmc driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-22 15:25:35 -04:00
Alan Cox
b63b5e819d mmc: core: correct invalid error checking
The effect of the existing code is that we continue blindly when we
should warn about an invalid allocation unit.

Reported-by: dcb314@hotmail.com
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=44061
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:24 -04:00
Philip Rakity
68737043bb mmc: only support voltage (vdd) that regulator agrees with
If we are using a regulator the SD Host Controller and the
regulator should agree about the voltages supported.  Use
the common subset that is supported.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:24 -04:00
Philip Rakity
0aa6770000 mmc: sdhci: only set 200mA support for 1.8v if 200mA is available
max_current_caps can return 0 if not available from the sd controller.
If no regulator is present or the regulator specifies a current
less then 200ma, we no longer still set the 200mA caps bit anyway.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Reviewed-by: Aaron Lu <aaron_lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:23 -04:00
Philip Rakity
bad37e1ac6 mmc: sdhci: if MAX_CURRENT is 0, try getting current from regulator
The sd host controller spec indicates the the MAX_CURRENT value may
be returned as 0.  In this case other methods need to be used to
return the current.  If 0 is returned and there is a regulator,
ask the regulator for how much current is available.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
Reviewed-by: Aaron Lu <aaron.lu@amd.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:22 -04:00
Guennadi Liakhovetski
e480606ad4 mmc: sh_mmcif: support generic card-detection
Extend the sh_mmcif driver to support GPIO card detection, provided by the
slot function module. The original .get_cd() platform callback is also
preserved for now.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:22 -04:00
Guennadi Liakhovetski
d9adcc1286 mmc: prohibit card detection when host is not ready
Currently mmc host drivers have to decide whether to enable card
detection before calling mmc_add_host() -- in which case a card
insertion event can arrive before the host has been completely
initialised -- or after mmc_add_host(), in which case the initial
card detection can be problematic.

This patch adds an explicit indication of when card detection should
not be carried out. With it in place enabling card detection before
calling mmc_add_host() should be safe. Similarly, disabling it again
after calling mmc_remove_host() will avoid any races.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:21 -04:00
Guennadi Liakhovetski
bf68a812f0 mmc: sh-mmcif: add OF support, make platform data optional
Add primitive OF support to the sh-mmcif driver, which also makes it
necessary to be able to run without platform data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:21 -04:00
Guennadi Liakhovetski
c7bb4487a3 mmc: sdhi: add OF support, make platform data optional
Add primitive support for OF to the SDHI TMIO glue, which also makes it
necessary to be able to run without platform data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:20 -04:00
Guennadi Liakhovetski
3071cafb7f mmc: tmio: use generic GPIO CD and WP handlers
The tmio-mmc driver is already using the generic GPIO CD handler in IRQ
mode. This patch adds support for CD polling mode and also checks for
availability of a WP GPIO.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:20 -04:00
Guennadi Liakhovetski
d7d8d500bc mmc: sh_mobile_sdhi: support caps2 flags
Let SDHI platforms specify mmc_host::caps2 flags in their platform data.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:19 -04:00
Guennadi Liakhovetski
02cb3221d5 mmc: tmio: support caps2 flags
Allow tmio mmc glue drivers to pass mmc_host::caps2 flags down to
the mmc layer.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:18 -04:00
Guennadi Liakhovetski
5aa7dad305 mmc: core: add WP pin handler to slot functions
Card Write-Protect pin is often implemented, using a GPIO, which makes
it simple to provide a generic handler for it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:18 -04:00
Guennadi Liakhovetski
a7d1a1ebd8 mmc: core: convert slot functions to managed allocation
This prepares for the addition of further slot functions.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:17 -04:00
Guennadi Liakhovetski
befe4048d8 mmc: add CD GPIO polling support to slot functions
A simple extension of mmc slot functions add support for CD GPIO polling
for cases where the GPIO cannot produce interrupts, or where this is not
desired for some reason.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:17 -04:00
Guennadi Liakhovetski
27410ee7e3 mmc: core: use a more generic name for slot function types and fields
struct mmc_host::hotplug is becoming a generic hook for slot functions.
Rename it accordingly.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:16 -04:00
Guennadi Liakhovetski
7d17baa05d mmc: sh_mmcif: add regulator support
Add regulator support to the sh_mmcif driver, but also preserve the current
power-callback.

Also note, that the card power is not switched off during clock gating
periods, hence there's no need to power it on every time the card is
re-activated.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:15 -04:00
Guennadi Liakhovetski
e2ee996eaa mmc: sh_mmcif: remove redundant .down_pwr() callback
From the original version of sh_mmcif the .set_pwr() callback has only been
used to turn the card's power on, and the .down_pwr() callback has been
used to turn it off. .set_pwr() can be used for both these tasks, which is
also how it is implemented by the only user of this API: the SH7724 ecovec
board.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:14 -04:00
Guennadi Liakhovetski
a660926710 mmc: sh_mmcif: re-read the clock frequency every time it is turned on
With aggressive clock gating the clock can be disabled during interface
inactivity. During this time its frequency can be changed by another its
user. Therefore when the interface is activated again and the clock is
re-enabled, its frequency has to be re-read.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:14 -04:00
Guennadi Liakhovetski
b289174ff7 mmc: sh_mmcif: fix clock management
Regardless of whether the MMC bus clock is the same as the PM clock on
this specific interface, it has to be managed separately. Its proper
management should also include enabling and disabling of the clock,
whenever the interface is becoming active or going idle respectively.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:13 -04:00
Guennadi Liakhovetski
e1aae2eb3f mmc: sh_mmcif: simplify and use meaningful label names in error-handling
A check for NULL platform data can be conveniently made in the very
beginning of probing. Replace numbered error-handling labels in .probe()
with meaningful names to make any future reorganisation simpler.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviewed-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:13 -04:00
Guennadi Liakhovetski
944640d0ff mmc: tmio: remove a duplicated comment line
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:12 -04:00
Guennadi Liakhovetski
71da63e767 mmc: sdhi: do not install dummy callbacks
Currently the SDHI glue for the TMIO MMC driver installs dummy .get_cd() and
.set_pwr() callbacks even if the platform didn't supply them. This is not
necessary, since the TMIO MMC driver itself checks for NULL callbacks. This
is also dubious if the platform provides a regulator for SD-card power
switching. It is better to only install those callbacks, if they are really
provided by the platform.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:11 -04:00
Guennadi Liakhovetski
b958a67c6b mmc: tmio: add regulator support
Currently the TMIO MMC driver derives the OCR mask from the platform data
and uses a platform callback to turn card power on and off. This patch adds
regulator support to the driver.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:11 -04:00
Guennadi Liakhovetski
56c4928793 mmc: sdhi: implement tmio-mmc clock enable-update and disable callbacks
Instead of delivering one static clock frequency value, read from the
hardware during probing, enable the tmio-mmc driver to re-read the
frequency dynamically.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:10 -04:00
Guennadi Liakhovetski
8c102a9646 mmc: tmio: add callbacks to enable-update and disable the interface clock
Every time the clock is enabled after possibly being disabled, we have
to re-read its frequency and update our configuration.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:10 -04:00
Guennadi Liakhovetski
e0337cc8b0 mmc: tmio: don't needlessly enable interrupts during probing
We don't have to force-enable MMC interrupts in our .probe() method,
mmc_add_host() will trigger card detection, that will enable all the
necessary interrupts.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:09 -04:00
Jonathan Kliegman
3bfe619dc3 mmc: dw_mmc: Fix null dma_ops access when use_dma is false
host->dma_ops is not valid if host->usa dma is 0 so protect
host->dma_ops reference in dw_mci_resume

Signed-off-by: Jonathan Kliegman <kliegs@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:09 -04:00
Guennadi Liakhovetski
e137788dd1 mmc: add a function to get regulators, supplying card's power
Add a function to get regulators, supplying card's Vdd and Vccq on a
specific host. If a Vdd supplying regulator is found, the function checks,
whether a valid OCR mask can be obtained from it. The Vccq regulator is
optional. A failure to get it is not fatal.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:08 -04:00
Laurent Pinchart
6de707f200 mmc: tmio: Don't access hardware registers after stopping clocks
The tmio_mmc_set_ios() function configures the MMC power, clock and bus
width. When the mmc core requests the driver to power off the card, we
inform runtime PM, that the controller can be suspended. This can lead
to the MSTP clock being turned off.

Writing to any 16-bit hardware registers with the MSTP clock off leads
to timeouts and errors being printed to the kernel log. This can occur
both when stopping the MMC clock and when configuring the bus width.

To fix this, stop the MMC clock before calling put_runtime_pm(), and
skip bus width configuration when power is off.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:07 -04:00
Laurent Pinchart
7541ca9847 mmc: sh_mmcif: Support MMC_SLEEP_AWAKE command
The MMC_SLEEP_AWAKE and SD_IO_SEND_OP_COND commands share the same
opcode. SD_IO_SEND_OP_COND isn't supported by the SH MMCIF, but
MMC_SLEEP_AWAKE is. Discriminate between the two commands using the
command flags, and reject SD_IO_SEND_OP_COND only.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:07 -04:00
Girish K S
94c6cee91b mmc: dw_mmc: Add check for IDMAC configuration
In the current dwmmc driver there is support for selecting IDMAC from
the menu config option. If the support for IDMAC is enabled in the menu
config and the hardware configuration register's DMA_INTERFACE field is
0, the driver will still try to do the DMA initialization.

The dw_mci_idmac_init function currently implemented returns only success
indicating that the DMA initialization is always successful. This patch
adds a check for existence of the DMA IP to allow the DMA initialization.

Signed-off-by: Girish K S <girish.shivananjappa@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-21 00:02:06 -04:00
Chris Ball
b650352dd3 mmc: sdhci-pxa: Add device tree support
Tested on an OLPC XO-1.75.  (MMP2, sdhci-pxav3, CONFIG_MACH_MMP2_DT=y)

Signed-off-by: Chris Ball <cjb@laptop.org>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-07-21 00:01:47 -04:00
Guennadi Liakhovetski
0e79f9ae16 mmc: sh_mmcif: switch to the new DMA channel allocation and configuration
Using the "private" field from struct dma_chan is deprecated. The sh
dmaengine driver now also supports the preferred DMA channel allocation
and configuration method, using a standard filter function and a channel
configuration operation. This patch updates sh_mmcif to use this new
method.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-20 11:28:54 +05:30
Alan Cox
adc8d746ca tty: move the termios object into the tty
This will let us sort out a whole pile of tty related races. The
alternative would be to keep points and refcount the termios objects.
However
1. They are tiny anyway
2. Many devices don't use the stored copies
3. We can remove a pty special case

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-07-16 13:00:41 -07:00
Guennadi Liakhovetski
c471270d7a mmc: sh_mobile_sdhi: prepare for conversion to the shdma base library
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-13 09:13:07 +05:30
Guennadi Liakhovetski
916001fe33 mmc: sh_mmcif: remove unneeded struct sh_mmcif_dma, prepare to shdma conversion
Now that all users have been updated to use the embedded in struct
sh_mmcif_plat_data DMA slave IDs, struct sh_mmcif_dma is no longer needed
and can be removed. This also makes preparation to the shdma base library
conversion easier.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-07-13 09:13:07 +05:30
Chris Ball
45a6b32e24 mmc: core: Export regulator_* functions as GPL
The regulator API functions we're wrapping are exported as GPL, so our
wrappers for the same functions should be too.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:06 -04:00
Subhash Jadavani
ecf8b5d0a3 mmc: block: replace __blk_end_request() with blk_end_request()
For completing any block request, MMC block driver is calling:
	spin_lock_irq(queue)
	__blk_end_request()
	spin_unlock_irq(queue)

But if we analyze the sources of latency in kernel using ftrace,
__blk_end_request() function at times may take up to 6.5ms with
spinlock held and irq disabled.

__blk_end_request() calls couple of functions and ftrace output
shows that blk_update_bidi_request() function is almost taking 6ms.
There are 2 function to end the current request: ___blk_end_request()
and blk_end_request(). Both these functions do same thing except
that blk_end_request() function doesn't take up the spinlock
while calling the blk_update_bidi_request().

This patch replaces all __blk_end_request() calls with
blk_end_request() and __blk_end_request_all() calls with
blk_end_request_all().

Testing done: 20 process concurrent read/write on sd card
and eMMC. Ran this test for almost a day on multicore system
and no errors observed.

This change is not meant for improving MMC throughput; it's basically
about becoming fair to other threads/interrupts in the system. By
holding spin lock and interrupts disabled for longer duration, we
won't allow other threads/interrupts to run at all.  Actually slight
performance degradation at file system level can be expected as we
are not holding the spin lock during blk_update_bidi_request() which
means our mmcqd thread may get preempted for other high priority
thread or any interrupt in the system.

These are performance numbers (100MB file write) with eMMC running
in DDR mode:

Without this patch:
	Name of the Test   Value   Unit
	LMDD Read Test     53.79   MBPS
	LMDD Write Test    18.86   MBPS
	IOZONE  Read Test  51.65   MBPS
	IOZONE  Write Test 24.36   MBPS

With this patch:
	Name of the Test    Value  Unit
	LMDD Read Test      52.94  MBPS
	LMDD Write Test     16.70  MBPS
	IOZONE  Read Test   52.08  MBPS
	IOZONE  Write Test  23.29  MBPS

Read numbers are fine. Write numbers are bit down (especially LMDD
write), may be because write requests normally have large transfer
size and which means there are chances that while mmcq is executing
blk_update_bidi_request(), it may get interrupted by interrupts or
other high priority thread.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:05 -04:00
Venkatraman S
6af9e96e05 mmc: core: Fix the HPI execution sequence
mmc_execute_hpi should send the HPI command only once, and only
if the card is in PRG state.

According to eMMC spec, the command's completion time is
not dependent on OUT_OF_INTERRUPT_TIME. Only the transition
out of PRG STATE is guarded by OUT_OF_INTERRUPT_TIME - which
is defined to begin at the end of sending the command itself.

Specify the default timeout for the actual sending of HPI
command, and then use OUT_OF_INTERRUPT_TIME to wait for
the transition out of PRG state.

Reported-by: Alex Lemberg <Alex.Lemberg@sandisk.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:04 -04:00
Guennadi Liakhovetski
fd0ea65d3e mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions
GPIOs can be used in MMC/SD-card slots not only for hotplug detection, but
also to implement the write-protection pin. Rename cd-gpio helpers to
slot-gpio to make addition of further slot GPIO functions possible.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:04 -04:00
Guennadi Liakhovetski
0f506a9669 mmc: tmio: use MMC opcode defines instead of numbers
mmc.h defines macros for most frequently used MMC opcodes. Use them instead
of hard-coded numbers.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:04:03 -04:00
Guennadi Liakhovetski
623b51fc86 mmc: cd-gpio: pass IRQF_ONESHOT to request_threaded_irq()
Fix a boot regression on Mackerel boards with sh_mobile_sdhi
in existing kernels causing:

genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq XXX

caused by 1c6c6952 (genirq: Reject bogus threaded irq requests).

This is backported from Guennadi's patch:
"mmc: extend and rename cd-gpio helpers to handle more slot GPIO functions"

Reported-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 23:03:57 -04:00
Venkatraman S
87f761b6c0 mmc: core: Revert "skip card initialization if power class selection fails"
This reverts commit 3d93576e(skip card initialization if
power class selection fails).
Problem has been reported when this is used with eMMC4.41
card with Tegra Platform. Till the issue is root caused,
bus width selection failure should not be treated as fatal.

Reported-by: Marc Dietrich <marvin24@gmx.de>
Signed-Off-by: Venkatraman S <svenkatr@ti.com>
CC: Ulf Hansson <ulf.hansson@stericsson.com>
CC: Subhash Jadavani <subhashj@codeaurora.org>
CC: Saugata Das <saugata.das@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-07-10 22:47:13 -04:00
Arnd Bergmann
524cd267e5 Merge branch 'for-3.6/common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/clk
From Stephen Warren <swarren@wwwdotorg.org>:

This branch contains numerous changes required as a baseline in order to
convert Tegra to the common clock framework. The intention was to also
include patches to actually convert Tegra to the common clock framework.
However, those patches appeared late in the kernel cycle and currently
cause regressions on some boards, so were dropped for now.

* 'for-3.6/common-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: tegra: Provide clock for only one PWM controller
  ARM: tegra: Fix PWM clock programming
  ARM: tegra: dma: rename driver name for clock to "tegra-apbdma"
  ARM: tegra: Remove second instance of uart clk
  crypto: add clk_prepare/clk_unprepare
  ASoC: tegra: add clk_prepare/clk_unprepare
  staging: nvec: add clk_prepare/clk_unprepare
  spi/tegra: add clk_prepare/clk_unprepare
  Input: tegra-kbc - add clk_prepare/clk_unprepare
  USB: ehci-tegra: add clk_prepare/clk_unprepare
  mmc: tegra: add clk_prepare/clk_unprepare
  i2c: tegra: Add clk_prepare/clk_unprepare
  ARM: tegra: add clk_prepare/clk_unprepare

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-06 22:21:23 +02:00
Arnd Bergmann
ebaaa25de8 Merge branch 'tegra/cleanup' into next/clk
Dependency for tegra/common-clk branch

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-06 22:20:40 +02:00
Arnd Bergmann
8e31cbc66b Merge branch 'for-3.6/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/cleanup
From Stephen Warren <swarren@wwwdotorg.org>:

This branch contains various minor cleanups, such as binding and .dts
renames, DT content cleanup, SDHCI support-8bit property usage cleanup, and
removal of some unnecessary sleep code.

* 'for-3.6/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: dt: tegra: rename board files to match SoC
  ASoC: tegra: simplify Kconfig dependencies
  ARM: dt: tegra: remove legacy support-8bit property
  mmc: tegra: use bus-width property instead of support-8bit
  ARM: tegra: Remove flow controller programming
  dt: name all Tegra binding docs consistently
  ARM: tegra20: Rename "emc" to "memory-controller"
  ARM: dt: tegra20: Rename "emc" to "memory-controller"
  ARM: tegra{20,30}: Rename "mc" to "memory-controller"
  ARM: dt: tegra{20,30}.dtsi: Rename "mc" to "memory-controller"
  amba: tegra-ahb: Remove empty *_remove()

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-07-06 22:09:21 +02:00
Ming Lei
fe85227347 Revert "mmc: omap_hsmmc: Enable Auto CMD12"
This patch reverts the commit dba3c29ea4.

After bisecting, this commit dba3c29 is found to ruin micro-SD card data
(writing incorrect file, or fs is corrupt after several times mount)
on the beagle-xm revB, and reverting the commit will fix the problem.

Also from TRM of OMAP3/OMAP4/DM37x, the below is mentioned about
the Auto CMD12 Enable bit.
        - SDIO does not support this feature.
        - SD card only.
Looks it is not suitable to always enable Auto CMD12 in host controller
driver.

Considered that the commit is not mature enough, so ask to revert it
first.

Cc: Balaji T K <balajitk@ti.com>
Cc: Venkatraman S <svenkatr@ti.com>
Buglink: https://lkml.org/lkml/2012/6/10/225
Reported-by: Paolo Pisati <p.pisati@gmail.com>
Reported-bisected-and-tested-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-26 16:10:30 -04:00
Subhash Jadavani
d380443cd0 mmc: block: fix the data timeout issue with ACMD22
If multi block write operation fails for SD card, during
error handling we send the SD_APP_SEND_NUM_WR_BLKS (ACMD22)
to know how many blocks were already programmed by card.

But mmc_sd_num_wr_blocks() function which sends the ACMD22
calculates the data timeout value from csd.tacc_ns and
csd.tacc_clks parameters which will be 0 for block addressed
(>2GB cards) SD card. This would result in timeout_ns and
timeout_clks being 0 in the mmc_request passed to host driver.
This means host controller would program its data timeout timer
value with 0 which could result in DATA TIMEOUT errors from
controller.

To fix this issue, mmc_sd_num_wr_blocks() should instead
just call the mmc_set_data_timeout() to calculate the
data timeout value. mmc_set_data_timeout() function
ensures that non zero timeout value is set even for
block addressed SD cards.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-26 16:10:29 -04:00
Linus Torvalds
a2a2609c97 Merge branch 'akpm' (Andrew's patch-bomb)
* emailed from Andrew Morton <akpm@linux-foundation.org>: (21 patches)
  mm/memblock: fix overlapping allocation when doubling reserved array
  c/r: prctl: Move PR_GET_TID_ADDRESS to a proper place
  pidns: find_new_reaper() can no longer switch to init_pid_ns.child_reaper
  pidns: guarantee that the pidns init will be the last pidns process reaped
  fault-inject: avoid call to random32() if fault injection is disabled
  Viresh has moved
  get_maintainer: Fix --help warning
  mm/memory.c: fix kernel-doc warnings
  mm: fix kernel-doc warnings
  mm: correctly synchronize rss-counters at exit/exec
  mm, thp: print useful information when mmap_sem is unlocked in zap_pmd_range
  h8300: use the declarations provided by <asm/sections.h>
  h8300: fix use of extinct _sbss and _ebss
  xtensa: use the declarations provided by <asm/sections.h>
  xtensa: use "test -e" instead of bashism "test -a"
  xtensa: replace xtensa-specific _f{data,text} by _s{data,text}
  memcg: fix use_hierarchy css_is_ancestor oops regression
  mm, oom: fix and cleanup oom score calculations
  nilfs2: ensure proper cache clearing for gc-inodes
  thp: avoid atomic64_read in pmd_read_atomic for 32bit PAE
  ...
2012-06-20 14:41:57 -07:00
Viresh Kumar
10d8935f46 Viresh has moved
viresh.kumar@st.com email-id doesn't exist anymore as I have left the
company.  Replace ST's id with viresh.linux@gmail.com.

It also updates .mailmap file to fix address for 'git shortlog'

Signed-off-by: Viresh Kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-06-20 14:39:36 -07:00
Linus Torvalds
a4d7a12238 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "This includes three MMCI changes - one to fix up the wrong version of
  the DT support patch which was merged, and two to make deferred
  probing work.  It also includes a fix to the OMAP SPI driver which is
  causing a boot time warning.

  The remainder are very minor ARM fixes."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  SPI: fix over-eager devm_xxx() conversion
  ARM: 7427/1: mmc: mmci: Defer probe() in case of yet uninitialized GPIOs
  ARM: 7426/1: mmc: mmci: Remove wrong error handling of gpio 0
  ARM: 7425/1: extable: ensure fixup entries are 4-byte aligned
  ARM: 7421/1: bpf_jit: BPF_S_ANC_ALU_XOR_X support
  ARM: 7423/1: kprobes: run t32_simulate_ldr_literal() without insn slot
  ARM: 7422/1: mmc: mmci: Allocate platform memory during Device Tree boot
2012-06-20 09:42:09 -07:00
Roland Stigge
2805b9ab7c ARM: 7427/1: mmc: mmci: Defer probe() in case of yet uninitialized GPIOs
If the GPIOs used by the MMCI driver are not registered yet when the driver is
probe()d, they can't be used. This happens if the mmci driver is probed before
the respective GPIO controller (e.g. on the LPC32xx EA3250 board, the PCA9532
GPIO controller would be initialized via DT after mmci). Therefore, we defer
mmci in this case.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-06-17 22:24:36 +01:00
Roland Stigge
f433809817 ARM: 7426/1: mmc: mmci: Remove wrong error handling of gpio 0
Zero is a valid GPIO and shouldn't be handled as an error return code from
of_get_named_gpio(). It was a leftover from old code before getting
pdata->gpio_*() was modified.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-06-17 22:24:32 +01:00
Lee Jones
b9b52918ab ARM: 7422/1: mmc: mmci: Allocate platform memory during Device Tree boot
When booting with Device Tree enabled, platform specific information
is gathered by parsing the DT binary. Platform data is subsequently
populated with the result. The memory required for this is not
automatically allocated during Device Tree boot, so we'll do it here
instead.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-06-14 15:11:05 +01:00
Prashant Gaikwad
1e674bc668 mmc: tegra: add clk_prepare/clk_unprepare
Use clk_prepare/clk_unprepare as required by the generic clk framework.

Cc: cjb@laptop.org
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-06-11 11:55:36 -06:00
Stephen Warren
c11bd55790 mmc: tegra: use bus-width property instead of support-8bit
Update the driver to parse the new unified bus-width property introduced
in commit 7f21779 "mmc: dt: Consolidate DT bindings", instead of the legacy
support-8bit property.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Chris Ball <cjb@laptop.org>
2012-06-11 11:48:43 -06:00
Marek Vasut
a3e545e9ab mmc: mxs-mmc: Move of_match_table out of CONFIG_PM
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 10:16:40 -04:00
Heiko Stübner
81ec1daa11 mmc: sdhci-s3c: pass IRQF ONESHOT to request threaded irq
Fix a boot regression in existing kernels causing:

genirq: Threaded irq requested with handler=NULL and !ONESHOT for irq XXX

caused by 1c6c6952 (genirq: Reject bogus threaded irq requests).

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:53:22 -04:00
Jaehoon Chung
85e727edb9 mmc: core: return an error on suspend if mmc_deselect_cards fails
When mmc_host is not spi mode, mmc/sd is doing mmc_deselect_cards().
mmc_deselect_cards could be returned error.
If returned error, we can know something wrong when enter suspend.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:49:47 -04:00
Tony Lindgren
ebbe6f889f mmc: omap: Fix broken reg_shift initialization
Commit fa550189 (mmc: core: Prevent eMMC VCC supply to be cut from late init)
slightly affected timings for how things are done for the omap MMC driver
causing the MMC cards not getting detected any longer.

Turns out this was caused by buggy reg_shift initialization in the omap
MMC driver that was happening after mmc_add_host() was being called.

Fix this by initializing reg_shift before mmc_add_host() is called.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:47:49 -04:00
Tony Lindgren
3caf41406d mmc: omap: Fix NULL pointer dereference if mmc_omap_new_slot() fails
Commit b01a4f1c (mmc: omap: convert to per instance workqueue) initializes
the workqueue too late causing the following:

Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 5 [#1] SMP ARM
Modules linked in:
CPU: 0    Not tainted  (3.4.0-08218-gb48b2c3 #158)
PC is at __queue_work+0x8/0x46c
LR is at queue_work_on+0x38/0x40
pc : [<c005bb4c>]    lr : [<c005c00c>]    psr: 60000193
sp : c0691e1c  ip : 00000000  fp : c07374ac
r10: c7aae400  r9 : c0395700  r8 : 00000100
r7 : c0691e70  r6 : 00000000  r5 : 00000000  r4 : c7aae440
r3 : 00000001  r2 : c7aae440  r1 : 00000000  r0 : 00000000
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 00c5387d  Table: 80004000  DAC: 00000017
Process swapper/0 (pid: 0, stack limit = 0xc06902f8)
Stack: (0xc0691e1c to 0xc0692000)

Fix this by initializing the workqueue before mmc_omap_remove_slot()
get called. Tested on n770, looks like n800 at least still has some
other issue with MMC.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:45:50 -04:00
Tony Lindgren
4f837791d9 mmc: omap: Fix a section warning regression
Commit b6e0703b (mmc: omap: make it behave well as a module) made some
__devinit changes but missed one function causing a section warning:

WARNING: vmlinux.o(.devinit.text+0x8604): Section mismatch in reference
from the function mmc_omap_probe)

The function __devinit mmc_omap_probe() references a function
__init mmc_omap_new_slot().

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:44:09 -04:00
Seungwon Jeon
e419990b5e mmc: dw_mmc: correct the calculation for CLKDIV
In case of "host->bus_hz < slot->clock", divider value is
miscalculated. And clock divider register value is multiple of 2. If
calculated divider value is odd number, result can be over-clocking.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:38:51 -04:00
Seungwon Jeon
fda5f73686 mmc: dw_mmc: fix incorrect setting of host->data of NULL
Setting host->data to NULL is incorrect sequence in
dw_mci_command_complete. This early setting makes the skip of
dma_unmap_sg in dw_mci_dma_cleanup.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:37:03 -04:00
Seungwon Jeon
141a712a4e mmc: dw_mmc: fix the IDMAC sw reset
IDMAC may not be cleaned in driver probe if it has been already used in
boot time. So IDMAC needs sw reset newly. And DMA interface reset
precedes the internal DMAC reset. Additionally SDMMC_IDMAC_SWRESET is
replaced with magic code.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:36:21 -04:00
Seungwon Jeon
eed6c63cef mmc: dw_mmc: fix the transmission handling in IDMAC
DTO interrupt can be later than transmit interrupt(IDMAC) in case of
write. Current handling of IDMAC interrupt sets EVENT_DATA_COMPLETE as
well as EVENT_XFER_COMPLETE regardless of DTO rising. This makes the
current request finish in tasklet and permits the next request even
though current data transfer is still in progress. As a result, sequence
is broken and lock-up happens. Setting EVENT_DATA_COMPLETE is not proper
after IDMAC interrupt. It should be taken after DTO interrupt is
generated.

Reported-by: Dmitry Shmidt <dimitrysh@android.com>
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Hyeonsu Kim <hyeonsu.kim@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:35:47 -04:00
Yong Ding
2a0fe914a3 mmc: sdio: fix setting card data bus width as 4-bit
SDIO_CCCR_IF[1:0] in SDIO card is used for card data bus width
setting as below:

     00b: 1-bit bus
     01b: Reserved
     10b: 4-bit bus
     11b: 8-bit bus (only for embedded SDIO)

And sdio_enable_wide is for setting data bus width as 4-bit.
But currently, it first reads the register, second OR' 1b with
SDIO_CCCR_IF[1], and then writes it back.

As we can see, this is based on such assumption that the
SDIO_CCCR_IF[0] is always 0. Apparently, this is not right.

Signed-off-by: Yong Ding <yongd@marvell.com>
Acked-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 09:22:53 -04:00
Nicolas Ferre
693e5e2025 mmc: atmel-mci: fix burst/chunk size modification
The use of DMA slave config operation requires that the burst size
(aka chunk size) is specified through this interface.
Modify atmel-mci slave driver to use this specification on its side.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 08:52:12 -04:00
Ludovic Desroches
b87cc1b5d3 mmc: atmel-mci: fix data timeout issue
The data timeout timer was configured after mmc_add_host call. So, with bad
timings, it was possible to have a mmc request causing mod_timer call on a
non setup timer.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 05:57:27 -04:00
Chris Ball
09eeff52bf mmc: sdhci: Use DBG() instead of pr_warning() on large timeout
3bdc9ba892 ("mmc: use really long write timeout to deal with crappy
cards") in 3.4 increased the write timeout that the core sends to host
drivers to 3 seconds.  This makes sdhci's "requested timeout too large"
warning trigger on every write; so, change this pr_warning() to a DBG().

Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-06-06 05:52:36 -04:00
Linus Torvalds
84a442b9a1 arm-soc: device tree conversions, part 2
These continue the device tree work from part 1, this set is for the
 tegra, mxs and imx platforms, all of which have dependencies on clock
 or pinctrl changes submitted earlier.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc device tree conversions (part 2) from Olof Johansson:
 "These continue the device tree work from part 1, this set is for the
  tegra, mxs and imx platforms, all of which have dependencies on clock
  or pinctrl changes submitted earlier."

Fix up trivial conflicts due to nearby changes in
drivers/{gpio/gpio,i2c/busses/i2c}-mxs.c

* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (73 commits)
  ARM: dt: tegra: invert status=disable vs status=okay
  ARM: dt: tegra: consistent basic property ordering
  ARM: dt: tegra: sort nodes based on bus order
  ARM: dt: tegra: remove duplicate device_type property
  ARM: dt: tegra: consistenly use lower-case for hex constants
  ARM: dt: tegra: format regs properties consistently
  ARM: dt: tegra: gpio comment cleanup
  ARM: dt: tegra: remove unnecessary unit addresses
  ARM: dt: tegra: whitespace cleanup
  ARM: dt: tegra cardhu: fix typo in SDHCI node name
  ARM: dt: tegra: cardhu: register core regulator tps62361
  ARM: dt: tegra30.dtsi: Add SMMU node
  ARM: dt: tegra20.dtsi: Add GART node
  ARM: dt: tegra30.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra20.dtsi: Add Memory Controller(MC) nodes
  ARM: dt: tegra: Add device tree support for AHB
  ARM: dts: enable audio support for imx28-evk
  ARM: dts: enable i2c device for imx28-evk
  i2c: mxs: add device tree probe support
  ARM: dts: enable mmc for imx28-evk
  ...
2012-05-26 12:57:47 -07:00
Linus Torvalds
2795343705 arm-soc: clock driver changes
The new clock subsystem was merged in linux-3.4 without any users, this
 now moves the first three platforms over to it: imx, mxs and spear.
 
 The series also contains the changes for the clock subsystem itself,
 since Mike preferred to have it together with the platforms that require
 these changes, in order to avoid interdependencies and conflicts.
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Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc clock driver changes from Olof Johansson:
 "The new clock subsystem was merged in linux-3.4 without any users,
  this now moves the first three platforms over to it: imx, mxs and
  spear.

  The series also contains the changes for the clock subsystem itself,
  since Mike preferred to have it together with the platforms that
  require these changes, in order to avoid interdependencies and
  conflicts."

Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code
removed in one branch, added OF support in another) and
drivers/dma/imx-sdma.c (independent changes next to each other).

* tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  SPEAr: Update defconfigs
  SPEAr: Add SMI NOR partition info in dts files
  SPEAr: Switch to common clock framework
  SPEAr: Call clk_prepare() before calling clk_enable
  SPEAr: clk: Add General Purpose Timer Synthesizer clock
  SPEAr: clk: Add Fractional Synthesizer clock
  SPEAr: clk: Add Auxiliary Synthesizer clock
  SPEAr: clk: Add VCO-PLL Synthesizer clock
  SPEAr: Add DT bindings for SPEAr's timer
  ARM i.MX: remove now unused clock files
  ARM: i.MX6: implement clocks using common clock framework
  ARM i.MX35: implement clocks using common clock framework
  ARM i.MX5: implement clocks using common clock framework
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ...
2012-05-26 12:42:29 -07:00
Linus Torvalds
ce53044c68 arm-soc: driver specific updates
These changes are specific to some driver that may be used by multiple
 boards or socs. The most significant change in here is the move of the
 samsung iommu code from a platform specific in-kernel interface to the
 generic iommu subsystem.
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Merge tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc driver specific updates from Olof Johansson:
 "These changes are specific to some driver that may be used by multiple
  boards or socs.  The most significant change in here is the move of
  the samsung iommu code from a platform specific in-kernel interface to
  the generic iommu subsystem."

Fix up trivial conflicts in arch/arm/mach-exynos/Kconfig

* tag 'drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
  mmc: dt: Consolidate DT bindings
  iommu/exynos: Add iommu driver for EXYNOS Platforms
  ARM: davinci: optimize the DMA ISR
  ARM: davinci: implement DEBUG_LL port choice
  ARM: tegra: Add SMMU enabler in AHB
  ARM: tegra: Add Tegra AHB driver
  Input: pxa27x_keypad add choice to set direct_key_mask
  Input: pxa27x_keypad direct key may be low active
  Input: pxa27x_keypad bug fix for direct_key_mask
  Input: pxa27x_keypad keep clock on as wakeup source
  ARM: dt: tegra: pinmux changes for USB ULPI
  ARM: tegra: add USB ULPI PHY reset GPIO to device tree
  ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
  ARM: tegra: change pll_p_out4's rate to 24MHz
  ARM: tegra: fix pclk rate
  ARM: tegra: reparent sclk to pll_c_out1
  ARM: tegra: Add pllc clock init table
  ARM: dt: tegra cardhu: basic audio support
  ARM: dt: tegra30.dtsi: Add audio-related nodes
  ARM: tegra: add AUXDATA required for audio
  ...
2012-05-26 12:22:27 -07:00
Linus Torvalds
92bf3d0941 MMC highlights for 3.5:
Drivers:
  - at91-mci: This driver will be replaced by atmel-mci in 3.7.
  - atmel-mci: Add support for old at91-mci hardware.
  - dw_mmc: Allow multiple controllers; this previously caused corruption.
  - imxmmc: Remove this driver, replaced by mxcmmc.
  - mmci: Add device tree support.
  - omap: Allow multiple controllers.
  - omap_hsmmc: Auto CMD12, DDR support.
  - tegra: Support SD 3.0 spec.
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Merge tag 'mmc-merge-for-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC changes from Chris Ball
 - at91-mci: This driver will be replaced by atmel-mci in 3.7.
 - atmel-mci: Add support for old at91-mci hardware.
 - dw_mmc: Allow multiple controllers; this previously caused
   corruption.
 - imxmmc: Remove this driver, replaced by mxcmmc.
 - mmci: Add device tree support.
 - omap: Allow multiple controllers.
 - omap_hsmmc: Auto CMD12, DDR support.
 - tegra: Support SD 3.0 spec.

Fix up the usual trivial conflicts in feature-removal-schedule.txt

* tag 'mmc-merge-for-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (38 commits)
  mmc: at91-mci: this driver is now deprecated
  mmc: omap_hsmmc: pass IRQF_ONESHOT to request_threaded_irq
  mmc: block: Allow disabling 512B sector size emulation
  mmc: atmel-mci: add debug logs
  mmc: atmel-mci: add support for version lower than v2xx
  mmc: atmel-mci: change the state machine for compatibility with old IP
  mmc: atmel-mci: the r/w proof capability lack was not well managed
  mmc: dw_mmc: Fixed sdio interrupt mask bit setting bug
  mmc: omap: convert to module_platform_driver
  mmc: omap: make it behave well as a module
  mmc: omap: convert to per instance workqueue
  mmc: core: Remove dead code
  mmc: card: Avoid null pointer dereference
  mmc: core: Prevent eMMC VCC supply to be cut from late init
  mmc: dw_mmc: make multiple instances of dw_mci_card_workqueue
  mmc: queue: remove redundant memsets
  mmc: queue: rename mmc_request function
  mmc: core: skip card initialization if power class selection fails
  mmc: core: fix the signaling 1.8V for HS200
  mmc: core: fix the decision of HS200/DDR card-type
  ...
2012-05-25 08:23:32 -07:00
Linus Torvalds
813a95e5b4 arm-soc: soc-specific pinctrl changes
With this, five platforms are moving to the relatively new pinctrl
 subsystem for their pin management, replacing the older soc specific
 in-kernel interfaces with common code.
 
 There is quite a bit of net addition of code for each platform being
 added to the pinctrl subsystem. but the payback comes later when adding
 new boards can be done by only providing new device trees instead.
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Merge tag 'pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm soc-specific pinctrl changes from Olof Johansson:
 "With this, five platforms are moving to the relatively new pinctrl
  subsystem for their pin management, replacing the older soc specific
  in-kernel interfaces with common code.

  There is quite a bit of net addition of code for each platform being
  added to the pinctrl subsystem.  But the payback comes later when
  adding new boards can be done by only providing new device trees
  instead."

Fix up trivial conflicts in arch/arm/mach-ux500/{Makefile,board-mop500.c}

* tag 'pinctrl' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (61 commits)
  mtd: nand: gpmi: fix compile error caused by pinctrl call
  ARM: PRIMA2: select PINCTRL and PINCTRL_SIRF in Kconfig
  ARM: nomadik: enable PINCTRL_NOMADIK where needed
  ARM: mxs: enable pinctrl support
  video: mxsfb: adopt pinctrl support
  ASoC: mxs-saif: adopt pinctrl support
  i2c: mxs: adopt pinctrl support
  mtd: nand: gpmi: adopt pinctrl support
  mmc: mxs-mmc: adopt pinctrl support
  serial: mxs-auart: adopt pinctrl support
  serial: amba-pl011: adopt pinctrl support
  spi/imx: adopt pinctrl support
  i2c: imx: adopt pinctrl support
  can: flexcan: adopt pinctrl support
  net: fec: adopt pinctrl support
  ARM: ux500: switch MSP to using pinctrl for pins
  ARM: ux500: alter MSP registration to return a device pointer
  ARM: ux500: switch to using pinctrl for uart0
  ARM: ux500: delete custom pin control system
  ARM: ux500: switch over to Nomadik pinctrl driver
  ...
2012-05-22 09:39:42 -07:00
Russell King
ddf90a2ff2 Merge branches 'amba', 'devel-stable', 'fixes', 'mach-types', 'mmci', 'pci' and 'versatile' into for-linus 2012-05-21 15:15:10 +01:00
Ludovic Desroches
0caaa9539a mmc: at91-mci: this driver is now deprecated
at91-mci is deprecated since atmel-mci can deal with all chips.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 14:33:48 -04:00
Ming Lei
db35f83ef4 mmc: omap_hsmmc: pass IRQF_ONESHOT to request_threaded_irq
The flag of IRQF_ONESHOT should be passed to request_threaded_irq,
otherwise the following failure message should be dumped because
hardware handler is defined as NULL:

[    3.383483] genirq: Threaded irq requested with handler=NULL and
!ONESHOT for irq 368
[    3.392730] omap_hsmmc: probe of omap_hsmmc.0 failed with error -22

The patch fixes one kernel hang bug which is caused by mmc card
probe failure and root device can't be brought up.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 10:28:27 -04:00
Saugata Das
a5075eb948 mmc: block: Allow disabling 512B sector size emulation
This patch adds support for large sector size of 4KB by disabling
emulation.  This patch passes eMMC DATA_SECTOR_SIZE as the logical
block size during mmc_blk_alloc_req.

In order to use this patch for 4KB sector size, ensure that
USE_NATIVE_SECTOR is enabled, partition table is 4KB sector size
aligned and file system block and sector size are 4KB multiples.

Signed-off-by: Saugata Das <saugata.das@linaro.org>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 09:35:21 -04:00
Ludovic Desroches
6801c41a77 mmc: atmel-mci: add debug logs
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:43:00 -04:00
Ludovic Desroches
24011f3464 mmc: atmel-mci: add support for version lower than v2xx
Fix mci IP bugs and endianness issue.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:42:52 -04:00
Ludovic Desroches
f51775471a mmc: atmel-mci: change the state machine for compatibility with old IP
The state machine use in atmel-mci can't work with old IP versions
(< 0x200).  This patch allows to have a common state machine for all
versions in order to remove at91-mci driver only used for old versions.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:41:34 -04:00
Ludovic Desroches
7a90dcc2d7 mmc: atmel-mci: the r/w proof capability lack was not well managed
First mci IPs (mainly on rm9200 and 9261) don't have the r/w proof
capability.  The driver didn't work correctly without this capability
in PDC mode because of the double buffer switch which is too slow
even if we stop the transfer to perform this switch.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:41:10 -04:00
Kyoungil Kim
705ad0472b mmc: dw_mmc: Fixed sdio interrupt mask bit setting bug
The sdio interrupt mask bits are arranged in [31:16].
(1 << SDMMC_INT_SDIO(slot->id))) does 16 bits left shift twice.
So this patch changes to do 16 bits left shift only one time.

Signed-off-by: Kyoungil Kim <ki0351.kim@samsung.com>
Acked-by: Shashidhar Hiremath <shashidharh@vayavyalabs.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:34:48 -04:00
Venkatraman S
680f1b5b21 mmc: omap: convert to module_platform_driver
Get rid of boilerplate code by using module_platform_driver macro,
no functional changes.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:26:38 -04:00
Venkatraman S
b6e0703bbf mmc: omap: make it behave well as a module
Use proper __devinit and __devexit annotation for driver functions.
Instantiate the probe function for driver_ops instead of a probe in
the register function.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:26:15 -04:00
Venkatraman S
b01a4f1ce2 mmc: omap: convert to per instance workqueue
Currently, a global mmc_omap_wq is created for all instances of omap
hosts, which can lead to races and doesn't lend itself to unload the
module cleanly.  Instead, create per instance workqueue and remove
 the common workqueue.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-17 08:25:41 -04:00
Arnd Bergmann
3c0dec5f58 Merge branch 'clk-next' of git://git.linaro.org/people/mturquette/linux into next/clock
* 'clk-next' of git://git.linaro.org/people/mturquette/linux:
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ARM: Orion: SDIO: Add support for clk.
  ARM: Orion: NAND: Add support for clk, if there is one.
  ARM: Orion: EHCI: Add support for enabling clocks
  ARM: Orion: SATA: Add per channel clk/clkdev support.
  ARM: Orion: UART: Get the clock rate via clk_get_rate().
  ARM: Orion: WDT: Add clk/clkdev support
  ARM: Orion: Eth: Add clk/clkdev support.
  ARM: Orion: SPI: Add clk/clkdev support.
  ARM: Orion: Add clocks using the generic clk infrastructure.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-16 16:35:25 +02:00
Arnd Bergmann
deb88cc3c6 Merge branch 'drivers/mmc' into next/dt2
Changes in the dt2 branch move stuff around that gets changed
in the drivers/mmc branch. I chose a non-obvious resolution by
adding the new bus-width property into all the tegra sdhci device
nodes.

Conflicts:
	arch/arm/boot/dts/tegra-cardhu.dts
	arch/arm/boot/dts/tegra-harmony.dts
	arch/arm/boot/dts/tegra-ventana.dts

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-15 13:44:11 +02:00
Arnd Bergmann
c49314fa6c Merge branch 'drivers/mmc' into next/drivers
* drivers/mmc:
  mmc: dt: Consolidate DT bindings

Also pulls in the omap/dt-missed-3.4 branch as a dependency.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-15 13:31:11 +02:00
Arnd Bergmann
7f217794ff mmc: dt: Consolidate DT bindings
This patch unifies the current DT MMC bindings documentation and code,
adds generic MMC DT bindings documentation, and updates .dts files for
consistency.

[cjb: typo fixes, addition of max-frequency property]
Signed-off-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-15 13:29:42 +02:00
Arnd Bergmann
4f5a9fd341 Merge branch 'imx/pinctrl' into imx/clock
Conflicts:
	drivers/mmc/host/sdhci-esdhc-imx.c
	drivers/net/ethernet/freescale/fec.c
	drivers/spi/spi-imx.c
	drivers/tty/serial/imx.c

This resolves dependencies between the pinctrl and clock changes
in imx.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-14 15:30:52 +02:00
Arnd Bergmann
304ea74770 Merge branch 'imx/dt/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6.git into next/dt2
Shawn Guo <shawn.guo@linaro.org> writes:

  I chose to base it on Sascha's imx-common-clk series than -rc, because
  otherwise it will keep patching clock file that has been removed by
  imx-common-clk series.  It also depends on imx-pinctrl pull-request
  I just sent to be functional.

  Note: when imx-common-clk and imx-pinctrl get merged together, the
  following files will have conflicts.  But the conflicts should not be
  so hard to resolve.

[arnd: resolved those merge conflicts by pulling pinctrl branch]

* imx/dt: (24 commits)
  ARM: dts: imx53-qsb: enable audio support
  ARM: dts: imx51-babbage: enable audio support
  ARM: imx: add audio codec clk lookup for imx53-qsb
  ARM: imx: add audmux pad setting for imx51-babbage
  ARM: imx: add more imx5 ssi clocks
  ARM: dts: imx53-qsb: Add Dialog DA9053 PMIC support
  ARM: dts: imx6q-sabrelite: add serial2 pinctrl support
  ARM: dts: imx6q-sabrelite: add sound device imx6q-sabrelite-sgtl5000
  ARM: imx6q_sabrelite: clk_register_clkdev cko1 for sgtl5000
  ARM: imx6q: add ssi1_ipg clk_lookup
  ARM: dts: imx6q-sabrelite: add audmux pinctrl support
  ARM: dts: imx6q-sabrelite: add i2c1 pinctrl support
  ARM: dts: imx6q-sabrelite: add audmux device
  ARM: dts: imx6q-sabrelite: add ssi device
  ARM: dts: imx6q-arm2: add pinctrl state for usdhc
  ARM: imx6: Add UART2 for low-level debug
  ARM: imx6q: register phy fixup only when CONFIG_PHYLIB is enabled
  ARM: imx6q: move imx6q_sabrelite specific code to a dedicated function
  ARM: dts: imx6q-sabrelite: Add SPI NOR support
  ARM: dts: Add basic support for imx6q-sabresd
  ...

Pulls in imx/pinctrl and imx/clock as dependencies.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-14 15:28:19 +02:00
Arnd Bergmann
6b204283f2 Merge branch 'imx/pinctrl' into imx/dt
Conflicts:
	drivers/mmc/host/sdhci-esdhc-imx.c
	drivers/net/ethernet/freescale/fec.c
	drivers/spi/spi-imx.c
	drivers/tty/serial/imx.c

This resolves some simply but annoying conflicts.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-05-14 15:23:13 +02:00
Olof Johansson
e29402edf8 Merge branch 'mxs/dt/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/dt2
* 'mxs/dt/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6: (51 commits)
  ARM: dts: enable audio support for imx28-evk
  ARM: dts: enable i2c device for imx28-evk
  i2c: mxs: add device tree probe support
  ARM: dts: enable mmc for imx28-evk
  ARM: dts: enable mmc for imx23-evk
  mmc: mxs-mmc: add device tree support
  mmc: mxs-mmc: copy wp_gpio in struct mxs_mmc_host
  mmc: mxs-mmc: have dma_channel than dma_res in mxs_mmc_host
  mmc: mxs-mmc: use devm_* helper to make cleanup simpler
  mmc: mxs-mmc: move header from mach into linux folder
  mmc: mxs-mmc: get rid of the use of cpu_is_xxx
  mmc: mxs-mmc: let ssp_is_old take host as parameter
  mmc: mxs-mmc: use global stmp_device functionality
  ARM: mxs: add gpio support for device tree boot
  gpio/mxs: add device tree probe
  gpio/mxs: get rid of the use of cpu_is_xxx
  gpio/mxs: use devm_* helpers to make error handling simple
  ARM: mxs: add mxs-dma dt support
  ARM: mxs: do not add dma device by default
  dma: mxs-dma: add device tree probe support
  ...
2012-05-12 22:33:24 -07:00
Shawn Guo
6de4d817aa mmc: mxs-mmc: add device tree support
It adds device tree probe support for mxs-mmc driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:27:37 +08:00
Shawn Guo
31b0ff5e73 mmc: mxs-mmc: copy wp_gpio in struct mxs_mmc_host
Copy wp_gpio from platform_data into struct mxs_mmc_host, so that
the use of platform_data can be limited in probe function, which
will ease the device tree probe.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:58 +08:00
Shawn Guo
b60188c820 mmc: mxs-mmc: have dma_channel than dma_res in mxs_mmc_host
It replaces dma_res with dma_channel in struct mxs_mmc_host, so that
the device tree support will be a little easier, since dma channel
can not be retrieved from "struct resource *dma_res".

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:51 +08:00
Shawn Guo
df06bfc724 mmc: mxs-mmc: use devm_* helper to make cleanup simpler
Use devm_request_and_ioremap and devm_request_irq helpers to clean up
the code a little bit.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:45 +08:00
Shawn Guo
81f38ee8e6 mmc: mxs-mmc: move header from mach into linux folder
Rename arch/arm/mach-mxs/include/mach/mmc.h to
include/linux/mmc/mxs-mmc.h, so that mxs-mmc driver becomes
<mach/*> inclusion free.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:38 +08:00
Shawn Guo
ef9b4d3996 mmc: mxs-mmc: get rid of the use of cpu_is_xxx
The register HW_SSP_VERSION is broken for ssp version detection,
as the address of the register is different between imx23 and imx28.
Let's use platform_device_id to detect the device, so that the use
of cpu_is_xxx can be removed.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:31 +08:00
Shawn Guo
e0bf141db2 mmc: mxs-mmc: let ssp_is_old take host as parameter
Let macro ssp_is_old take host as parameter to make the code easy
to read.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:25 +08:00
Shawn Guo
70e6020688 mmc: mxs-mmc: use global stmp_device functionality
Use global stmp_device functionality to reduce mach-dependency.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-13 08:05:07 +08:00
Olof Johansson
4a0dfe69fe Merge branch 'imx/pinctrl/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/pinctrl
* 'imx/pinctrl/for-3.5' of git://git.linaro.org/people/shawnguo/linux-2.6: (290 commits)
  ARM: mxs: enable pinctrl support
  video: mxsfb: adopt pinctrl support
  ASoC: mxs-saif: adopt pinctrl support
  i2c: mxs: adopt pinctrl support
  mtd: nand: gpmi: adopt pinctrl support
  mmc: mxs-mmc: adopt pinctrl support
  serial: mxs-auart: adopt pinctrl support
  serial: amba-pl011: adopt pinctrl support
  spi/imx: adopt pinctrl support
  i2c: imx: adopt pinctrl support
  can: flexcan: adopt pinctrl support
  net: fec: adopt pinctrl support
  tty: serial: imx: adopt pinctrl support
  mmc: sdhci-imx-esdhc: adopt pinctrl support
  ARM: imx6q: switch to use pinctrl subsystem
  ARM: mxs: enable pinctrl dummy states
  ARM: imx: enable pinctrl dummy states
  +3.4-rc5 update
2012-05-11 22:59:11 -07:00
Shawn Guo
9c92cf2409 mmc: mxs-mmc: adopt pinctrl support
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Chris Ball <cjb@laptop.org>
2012-05-12 09:43:15 +08:00
Dong Aisheng
e62d8b8fe7 mmc: sdhci-imx-esdhc: adopt pinctrl support
Cc: linux-mmc@vger.kernel.org
Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2012-05-11 14:56:01 +08:00
Olof Johansson
caafc71b1a DaVinci SoC updates for v3.5
This pull request updates the DaVinci SoC support to implement DEBUG_LL port
 choice and optimizes the DMA ISR by removing unnecessary register reads.
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Merge tag 'v3.5-soc' of git://gitorious.org/linux-davinci/linux-davinci into next/drivers

DaVinci SoC updates for v3.5

This pull request updates the DaVinci SoC support to implement DEBUG_LL port
choice and optimizes the DMA ISR by removing unnecessary register reads.

* tag 'v3.5-soc' of git://gitorious.org/linux-davinci/linux-davinci:
  ARM: davinci: optimize the DMA ISR
  ARM: davinci: implement DEBUG_LL port choice
  + sync with Linux 3.4-rc6

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-10 00:23:17 -07:00
Olof Johansson
bf98a6eaa9 Merge branch 'for-3.5/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/dt2
By Stephen Warren (29) and others
via Stephen Warren
* 'for-3.5/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (43 commits)
  ARM: dt: tegra trimslice: add support for audio
  ARM: dt: tegra trimslice: enable SDHCI1 controller
  ARM: dt: tegra trimslice: add RTC I2C device
  ARM: dt: tegra seaboard: add i2c devices
  ARM: dt: tegra seaboard: configure I2C2 pinmux
  ARM: dt: tegra seaboard: fix I2C2 SCL rate
  ARM: dt: tegra: enable als and proximity sensor
  + pinctrl mergebase branch

The pinctrl mergebase branch merge conflicts in drivers/pinctrl/core.c
that were resolved.

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-09 23:51:32 -07:00
Olof Johansson
bd69e27304 Merge branch 'for-3.5/usb-ulpi' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/drivers
By Stephen Warren (30) and others
via Stephen Warren
* 'for-3.5/usb-ulpi' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: (7 commits)
  ARM: dt: tegra: pinmux changes for USB ULPI
  ARM: tegra: add USB ULPI PHY reset GPIO to device tree
  ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
  ARM: tegra: change pll_p_out4's rate to 24MHz
  ARM: tegra: fix pclk rate
  ARM: tegra: reparent sclk to pll_c_out1
  ARM: tegra: Add pllc clock init table
  + depends/pinctrl/mergebase branch

Pinctrl mergebase has a conflict in drivers/pinctrl/core.c that was resolved.

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-09 23:47:14 -07:00
Olof Johansson
7488185d07 Merge branch 'for-3.5/gpio-pinmux' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/pinctrl
By Stephen Warren
via Stephen Warren
* 'for-3.5/gpio-pinmux' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  pinctrl: tegra: error reporting cleanup
  pinctrl: tegra: debugfs enhancements
  pinctrl: tegra: refactor probe handling
  ARM: dt: tegra20: add pinmux to device tree
  ARM: dt: tegra cardhu: add pinmux to device tree
  ARM: tegra: Remove pre-pinctrl pinmux driver
  ARM: tegra: Switch to new pinctrl driver
  gpio: tegra: Hide tegra_gpio_enable/disable()
  ARM: tegra: seaboard: Don't gpio_request() ISL29018_IRQ
  gpio: tegra: configure pins during irq_set_type
  ARM: tegra: Remove VBUS_GPIO handling from board files
  usb: ehci-tegra: Add vbus_gpio to platform data
2012-05-09 23:43:04 -07:00
Philippe De Swert
f6f44590f2 mmc: core: Remove dead code
bus_width is passed to the function and when 0 (MMC_BUS_WIDTH_1)
will cause the function to return. So in in the second test it
definitely is different from 0, and the third test is redundant.

Signed-off-by: Philippe De Swert <philippedeswert@gmail.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 20:47:49 -04:00
Philippe De Swert
1c02f000e7 mmc: card: Avoid null pointer dereference
After the null check on md the code jumped to cmd_done, which then
will dereference md in mmc_blk_put. This patch avoids the possible
null pointer dereference in that case.

Signed-off-by: Philippe De Swert <philippedeswert@gmail.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 20:47:37 -04:00
Ulf Hansson
fa5501890d mmc: core: Prevent eMMC VCC supply to be cut from late init
For eMMC cards that has been initialized from a bootloader,
the VCC voltage supply must not be cut in an uncontrolled
manner, without first sending SLEEP or POWEROFF_NOTIFY.

The regulator_init_complete late initcall, may cut the VCC
regulator if it's reference counter is zero. To be able to
prevent the regulator from being cut, mmc_start_host, which
should execute at device init and thus before late init,
calls mmc_power_up. Then the host driver is able to increase
the reference to the regulator.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 12:55:01 -04:00
Thomas Abraham
95dcc2cb6c mmc: dw_mmc: make multiple instances of dw_mci_card_workqueue
The variable 'dw_mci_card_workqueue' is a global variable shared between
multiple instances of the dw_mmc host controller. Due to this, data
corruption has been noticed when multiple instances of dw_mmc controllers
are actively reading/writing the media. Fix this by adding a instance
of 'struct workqueue_struct' for each host instance and removing the
global 'dw_mci_card_workqueue' instance.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:14:10 -04:00
Venkatraman S
b41b6f1d1c mmc: queue: remove redundant memsets
Not needed to memset, as they are pointers and are assigned
to proper values in the next line anyway.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:10:46 -04:00
Venkatraman S
1b50f5f392 mmc: queue: rename mmc_request function
The name mmc_request is used for both the issue function
and a data structure, which creates conflicts in symbol lookups
in editors. Rename the function to mmc_request_fn.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:08:54 -04:00
Subhash Jadavani
3d93576e34 mmc: core: skip card initialization if power class selection fails
With current implementation of power class selection,
mmc_select_powerclass() should never fail. So treat any error
returned by this function as serious enough to skip the card
initialization.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:07:12 -04:00
Seungwon Jeon
10942aa40a mmc: core: fix the signaling 1.8V for HS200
Currently only 1.2V is treated for HS200 mode. If the host has only
1.8V I/O capability not 1.2V, mmc_set_signal_voltage can't be called
for 1.8V HS200. EXT_CSD_CARD_TYPE_SDR_1_8V needs to be considered.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:04:12 -04:00
Seungwon Jeon
96cf5f02ae mmc: core: fix the decision of HS200/DDR card-type
Current implementation decides the card type exclusively. Even though
eMMC device can support both HS200 and DDR mode, card type will be
set only for HS200. If the host doesn't support HS200 but has DDR
capability, then DDR mode can't be selected.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-09 10:03:21 -04:00
Andrew Lunn
f4f7561e03 ARM: Orion: SDIO: Add support for clk.
Some orion devices can gate the SDIO clock. If the clock exists,
enable/disable it as appropriate.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2012-05-08 16:34:00 -07:00
Lee Jones
c0a120a4bc mmc: mmci: Fix compiler error when CONFIG_OF is not set
error: implicit declaration of function 'mmci_dt_populate_generic_pdata'

This is due to the '#if CONFIG_OF' guards placed around
mmci_dt_populate_generic_pdata(), but not around the call to it. We
repair this by inserting a stub which elegantly returns when CONFIG_OF
is not set.

Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-08 10:36:52 -04:00
Lee Jones
9a59701605 mmc: mmci: Use correct GPIO binding for IRQ requests
Now there are irqdomains in place for Snowball, we can request GPIO
IRQs directly by their binding. This replaces the previous method
of hard-coding the hwirq using u32 values in the DT.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-04 10:08:29 -04:00
Lee Jones
000bc9d5ed mmc: mmci: Enable Device Tree support for ux500 variants
Provide a means to collect attributes specific to ST-Ericsson's ux500
variant series. This patch registers itself as the AMBA driver to be
called during the probe process. Once all attributes and ux500 specifics
are are collected the normal mmci core probe is called.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-04 10:08:29 -04:00
Russell King
dfb85185bd AMBA: get rid of last two uses of NO_IRQ
This gets rid of the last two users of NO_IRQ in AMBA primecell
drivers.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-05-03 11:33:15 +01:00
Viresh Kumar
6ebaf8f2b0 mmc: sdhci-spear: Use devm_* derivatives
This patch replaces normal calls to resource allocation routines
with devm_*() derivative of those routines. This removes the need
to free those resources inside the driver.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-01 10:30:44 -04:00
Viresh Kumar
3524b5d1ed mmc: sdhci-spear: No need to check 'pdev == NULL' in probe
pdev is guaranteed to be valid in probe. And so check for non-NULL is
not required. Remove it.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-05-01 10:30:10 -04:00
Linus Torvalds
acdf2fc860 Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull [GIT PULL] slave-dmaengine fixes from Vinod Koul.

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine/amba-pl08x : reset phychan_hold on terminate all
  dma: pl330: fix a couple of compilation warnings
  dma/ste_dma40: fix erroneous comparison
  dma/ste_dma40: explicitly include regulator consumer header
  dma40: Improve the logic of stopping logical chan
  dmaengine: at_hdmac: remove clear-on-read in atc_dostart()
  dma: mxs-dma: enable channel in device_issue_pending call
  dmaengine: imx-dma: dont complete descriptor for cyclic dma
2012-04-26 15:33:36 -07:00
Linus Walleij
34fd421349 ARM: 7378/1: mmci: add support for the Nomadik MMCI variant
The Nomadik variant is somewhere inbetween the U300 and the Ux500
variant, its actually expose the same primecell ID as the U300
but had different characteristics so it needs a small revision
bump and hard-coding from the board/device tree. After this it
works just fine.

Acked-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-25 19:55:19 +01:00
Sascha Hauer
52dac61505 mmc sdhc i.MX: do not depend on grouped clocks
the current i.MX clock support groups together unrelated clocks
to a single clock which is then used by the driver. This can't
be accomplished with the generic clock framework so we instead
request the individual clocks in the driver. For i.MX there are
generally three different clocks:

ipg: bus clock (needed to access registers)
ahb: dma relevant clock, sometimes referred to as hclk in the datasheet
per: bit clock, pixel clock

This patch changes the driver to request the individual clocks.
Currently all clk_get will get the same clock until the SoCs
are converted to the generic clock framework

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-04-25 17:03:38 +02:00
Sascha Hauer
529aa29e03 mmc mxcmmc: do not depend on grouped clocks
the current i.MX clock support groups together unrelated clocks
to a single clock which is then used by the driver. This can't
be accomplished with the generic clock framework so we instead
request the individual clocks in the driver. For i.MX there are
generally three different clocks:

ipg: bus clock (needed to access registers)
ahb: dma relevant clock, sometimes referred to as hclk in the datasheet
per: bit clock, pixel clock

This patch changes the driver to request the individual clocks.
Currently all clk_get will get the same clock until the SoCs
are converted to the generic clock framework

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-04-25 17:03:38 +02:00
Guennadi Liakhovetski
0e9f480bb5 mmc: cd-gpio: protect against NULL context in mmc_cd_gpio_free()
Do not oops, even if mmc_cd_gpio_free() is mistakenly called on a driver
cleanup path, even though a previous call to mmc_cd_gpio_request() failed.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
[stable@: please apply to 3.3-stable]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-24 12:21:22 -04:00
Chuanxiao Dong
0dd1bfeb6c mmc: core: check PM_SLEEP for mmc_bus_suspend/resume callbacks
If PM_SLEEP is not enabled, mmc.c will give warnning since mmc_bus_suspend/
mmc_bus_resume functions are defined but not used. This patch can fix this
warnning.

Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-23 08:11:28 -04:00
Russell King
48b332f991 mmc: omap_hsmmc: release correct resource
res can be one of several resources, as this variable is re-used several
times during probe.  This can cause the wrong resource parameters to be
passed to release_mem_region().

Get the original memory resource before calling release_mem_region().

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:42 -04:00
Pavan Kunapuli
ca5879d3ff mmc: tegra: support SDHCI SPEC 300
Tegra3 SDHOST controller doesn't advertise v3.00 support by default.
This support has to be enabled by configuring a vendor register in
the tegra3 sd host address space.

Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:39 -04:00
Nicolas Pitre
bbbc4c4d8c mmc: sdio: avoid spurious calls to interrupt handlers
Commit 06e8935feb ("optimized SDIO IRQ handling for single irq")
introduced some spurious calls to SDIO function interrupt handlers,
such as when the SDIO IRQ thread is started, or the safety check
performed upon a system resume.  Let's add a flag to perform the
optimization only when a real interrupt is signaled by the host
driver and we know there is no point confirming it.

Reported-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:28 -04:00
Sascha Hauer
6187fee46f mmc: remove imxmmc driver
This driver is broken since 2.6.31 when the traditional i.MX1
support was removed.

In theory the i.MX1 mmc controller can be supported by the mxcmmc
driver which basically is the same hardware. However, the i.MX1
controller has severe bugs which made several workarounds necessary which
resulted in a different driver structure. At that time it seemed easier
to write a second driver to support hardware without bugs.

As noone cared for the i.MX1 driver for a long time and it does
not compile, remove it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:25 -04:00
Mark Brown
021459773d mmc: sdhci: Log what timeout was set if the timeout is too large
Rather than just logging that we came up with an excessively large timeout
say what the timeout was, this may provide some clues as to what the issue
is.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:17:16 -04:00
Jan Luebbe
7f8bea7f75 mmc: davinci_mmc: set MODULE_ALIAS to allow autoloading
Davinci MMC platform devices (as in mach-davinci/devices-da8xx.c) use
"davinci_mmc" as their name. To allow autoloading of the relevant
driver, the module needs to set the MODULE_ALIAS.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:58 -04:00
Rajendra Nayak
cd03d9a858 mmc: omap_hsmmc: Cleanup use of cpu_is_* for debounce_clock
There really does not seem to be a need to use cpu_is_* check for getting
the debounce clock as clkdev is perfectly capable of handling situations
when certain clocks are only available on select platforms.

Also get rid of the 'got_dbclk' flag and instead use the dbclk clock
pointer to know if a valid debounce clock exists for the platform.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:53 -04:00
Venkatraman S
31463b1415 mmc: omap_hsmmc: use spinlock IRQ safe variant
Prevent possible races between HSMMC/DMA IRQs and next requests.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:50 -04:00
Balaji T K
03b5d924b9 mmc: omap_hsmmc: add DDR support
Add Dual data rate support for omap_hsmmc.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:47 -04:00
Balaji T K
dba3c29ea4 mmc: omap_hsmmc: Enable Auto CMD12
Enable Auto-CMD12 for multi block read/write on HSMMC.
Tested on OMAP4430, OMAP3430 and OMAP2430 SDP

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-22 11:16:43 -04:00
Ulf Hansson
7c57091940 mmc: core: Do not pre-claim host in suspend
Since SDIO drivers may want to do some SDIO operations in their suspend
callback functions, we must not keep the host claimed when calling them.

Daniel Drake reported that libertas_sdio encountered a deadlock in its
suspend function.

Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Tested-by: Daniel Drake <dsd@laptop.org>
[stable@: please apply to 3.2-stable and 3.3-stable]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 21:52:13 -04:00
Jaehoon Chung
e1631f989e mmc: dw_mmc: prevent NULL dereference for dma_ops
Now, dma_ops is assumed that use the IDMAC.  But if dma_ops is assigned
the pdata->dma_ops, we didn't ensure that callback function is defined.

If the callback isn't defined, then we should run in PIO mode.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 21:52:05 -04:00
Eric Bénard
b89152824f mmc: unbreak sdhci-esdhc-imx on i.MX25
This was broken by me in 37865fe915
("mmc: sdhci-esdhc-imx: fix timeout on i.MX's sdhci") where more
extensive tests would have shown that read or write of data to the
card were failing (even if the partition table was correctly read).

Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:45:00 -04:00
H Hartley Sweeten
5ca6518832 mmc: cd-gpio: Include header to pickup exported symbol prototypes
Include the linux/mmc/cd-gpio.h header to pickup the prototypes
for the two exported symbols.

This quiets the sparse warnings:

warning: symbol 'mmc_cd_gpio_request' was not declared. Should it be static?
warning: symbol 'mmc_cd_gpio_free' was not declared. Should it be static?

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:45:00 -04:00
Daniel Drake
87b87a3fc0 mmc: sdhci: refine non-removable card checking for card detection
Commit c79396c191 ("mmc: sdhci: prevent card detection activity
for non-removable cards") disables card detection where the cards
are marked as non-removable.

This makes sense, but the implementation detail of calling
mmc_card_is_removable() causes some problems, because
mmc_card_is_removable() is overloaded with CONFIG_MMC_UNSAFE_RESUME
semantics.

In the OLPC XO case, we need CONFIG_MMC_UNSAFE_RESUME because our root
filesystem is stored on SD, but we also have external SD card slots
where we want automatic card detection.

Refine the check to only apply to hosts marked as MMC_CAP_NONREMOVABLE,
which is defined to mean that the card is *really* nonremovable. This
could be revisited in future if we find a way to improve
CONFIG_MMC_UNSAFE_RESUME semantics.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
[stable@: please apply to 3.3-stable]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:44:25 -04:00
Seungwon Jeon
a99aa9b9b4 mmc: dw_mmc: Fix switch from DMA to PIO
When dw_mci_pre_dma_transfer returns failure in some reasons,
dw_mci_submit_data will prepare to switch the PIO mode from DMA.
After switching to PIO mode, DMA(IDMAC in particular) is still
enabled. This makes the corruption in handling interrupt and
the driver lock-up.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:30:37 -04:00
Chuanxiao Dong
32d317c60e mmc: remove MMC bus legacy suspend/resume method
MMC bus is using legacy suspend/resume method, which is not compatible if
runtime pm callbacks are used. In this scenario, MMC bus suspend/resume
callbacks cannot be called when system entering S3. So change to use the
new defined dev_pm_ops for system sleeping mode.

Tested on AM335x Platform. Solves major issue/crash reported at
http://www.mail-archive.com/linux-omap@vger.kernel.org/msg65425.html

Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Tested-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:30:19 -04:00
Rajendra Nayak
4d048f915f mmc: omap_hsmmc: Get rid of of_have_populated_dt() usage
of_have_populated_dt() is not expected to be used in drivers but
instead only in early platform init code.
Drivers on the other hand should rely on dev->of_node or of_match_device().
Besides usage of of_have_populated_dt() also throws up build error as below
which was reported by Balaji TK, when omap_hsmmc is built as a module.

ERROR: "allnodes" [drivers/mmc/host/omap_hsmmc.ko] undefined!
make[1]: *** [__modpost] Error 1
make: *** [modules] Error 2

So get rid of all of_have_populated_dt() usage in omap_hsmmc driver and
instead use dev->of_node to make the same dicisions as earlier.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Reported-by: Benoit Cousson <b-cousson@ti.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:29:08 -04:00
Chris Ball
b6d085f6f5 mmc: omap_hsmmc: build fix for CONFIG_OF=y and CONFIG_MMC_OMAP_HS=m
Commit 46856a68dc ("mmc: omap_hsmmc: Convert hsmmc driver to use device tree")
introduced in 3.4-rc1 has a missing semi-colon, causing:

drivers/mmc/host/omap_hsmmc.c:1745: error: expected ',' or ';' before 'extern'

Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:29:05 -04:00
Adrian Hunter
283028122d mmc: fixes for eMMC v4.5 sanitize operation
eMMC v4.5 sanitize operation erases all copies of unmapped
data.  However trim or erase operations must be used first
to unmap the required sectors.  That was not being done.

Fixes apply to linux 3.2 on.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: <stable@vger.kernel.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:28:58 -04:00
Adrian Hunter
7194efb8f0 mmc: fixes for eMMC v4.5 discard operation
eMMC v4.5 discard operation is significantly different from the
existing trim operation because it is not guaranteed to work with
the new sanitize operation.  Consequently mmc_can_trim() is
separated from mmc_can_discard().

Also the new discard operation does not result in the sectors being
set to all-zeros, so discard_zeroes_data must not be set.

In addition, the new discard has the same timeout as trim, but from
v4.5 trim is defined to use the hc timeout.  The timeout calculation
is adjusted accordingly.

Fixes apply to linux 3.2 on.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: <stable@vger.kernel.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-20 20:28:55 -04:00
Shawn Guo
d04525ed03 dma: mxs-dma: enable channel in device_issue_pending call
Enable channel in device_issue_pending call, so that the order between
cookie assignment and channel enabling can be ensured naturally.

It fixes the mxs gpmi-nand breakage which is caused by the incorrect
order of cookie assigning and channel enabling.

Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Huang Shijie <b32955@freescale.com>
Tested-by <samgandhi9@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-04-20 15:35:58 +05:30
Stephen Warren
3e215d0a19 gpio: tegra: Hide tegra_gpio_enable/disable()
Recent pinctrl discussions concluded that gpiolib APIs should in fact do
whatever is required to mux a GPIO onto pins, by calling pinctrl APIs if
required. This change implements this for the Tegra GPIO driver, and removes
calls to the Tegra-specific APIs from drivers and board files.

Cc: Chris Ball <cjb@laptop.org>
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Chris Ball <cjb@laptop.org> # for sdhci-tegra.c
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
2012-04-18 10:26:38 -06:00
Paul Walmsley
3bdc9ba892 mmc: use really long write timeout to deal with crappy cards
Several people have noticed that crappy SD cards take much longer to
complete multiple block writes than the 300ms that Linux specifies.
Try to work around this by using a three second write timeout instead.

This is a generalized version of a patch from Chase Maupin
<Chase.Maupin@ti.com>, whose patch description said:

* With certain SD cards timeouts like the following have been seen
  due to an improper calculation of the dto value:
    mmcblk0: error -110 transferring data, sector 4126233, nr 8,
    card status 0xc00
* By removing the dto calculation and setting the timeout value
  to the maximum specified by the SD card specification part A2
  section 2.2.15 these timeouts can be avoided.
* This change has been used by beagleboard users as well as the
  Texas Instruments SDK without a negative impact.
* There are multiple discussion threads about this but the most
  relevant ones are:
    * http://talk.maemo.org/showthread.php?p=1000707#post1000707
    * http://www.mail-archive.com/linux-omap@vger.kernel.org/msg42213.html
* Original proposal for this fix was done by Sukumar Ghoral of
  Texas Instruments
* Tested using a Texas Instruments AM335x EVM

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:34 -04:00
Alf Høgemark
8c2fc8e413 mmc: sdhci-dove: Fix compile error by including module.h
This patch fixes a compile error in drivers/mmc/host/sdhci-dove.c
by including the linux/module.h file.

Signed-off-by: Alf Høgemark <alf@i100.no>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:33 -04:00
Al Cooper
4188bba0e9 mmc: Prevent 1.8V switch for SD hosts that don't support UHS modes.
The driver should not try to switch to 1.8V when the SD 3.0 host
controller does not have any UHS capabilities bits set (SDR50, DDR50
or SDR104). See page 72 of "SD Specifications Part A2 SD Host
Controller Simplified Specification Version 3.00" under
"1.8V Signaling Enable". Instead of setting SDR12 and SDR25 in the host
capabilities data structure for all V3.0 host controllers, only set them
if SDR104, SDR50 or DDR50 is set in the host capabilities register. This
will prevent the switch to 1.8V later.

Signed-off-by: Al Cooper <acooper@gmail.com>
Acked-by: Arindam Nath <arindam.nath@amd.com>
Acked-by: Philip Rakity <prakity@marvell.com>
Acked-by: Girish K S <girish.shivananjappa@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:32 -04:00
Chris Ball
79263f33b0 Revert "mmc: sdhci-pci: Add MSI support"
This reverts commit e6039832be.
There are reports of MSI breaking SDHCI on multiple chipsets (JMicron
and O2Micro, at least), so this should be reverted until we come up
with a whitelist or something.

Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:32 -04:00
Chris Ball
84e41d2d56 Revert "mmc: sdhci-pci: add quirks for broken MSI on O2Micro controllers"
This reverts commit c16e981b2fd9455af670a69a84f4c8cf07e12658, because
it's no longer useful once MSI support is reverted.

Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:31 -04:00
Subhash Jadavani
93fc5a47f2 mmc: core: fix power class selection
mmc_select_powerclass() function returns error if eMMC
VDD level supported by host is between 2.7v to 3.2v.

According to eMMC specification, valid voltage for high
voltage cards is 2.7v to 3.6v. This patch ensures that
2.7v to 3.6v VDD range is treated as valid range.

Also, failure to set the power class shouldn't be treated
as fatal error because even if setting the power class
fails, card can still work in default power class.
If mmc_select_powerclass() returns error, just print
the warning message and go ahead with rest of the card
initialization.

Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Acked-by: Girish K S <girish.shivananjappa@linaro.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:31 -04:00
Balaji T K
fc307df88f mmc: omap_hsmmc: fix module re-insertion
OMAP4 and OMAP3 HSMMC IP registers differ by 0x100 offset.
Adding the offset to platform_device resource structure
increments the start address for every insmod operation.
MMC command fails on re-insertion as module due to incorrect register
base.  Fix this by updating the ioremap base address only.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:30 -04:00
Felipe Balbi
b796450b45 mmc: omap_hsmmc: convert to module_platform_driver
This will delete some boilerplate code, no functional changes.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:29 -04:00
Felipe Balbi
efa25fd3a3 mmc: omap_hsmmc: make it behave well as a module
If we put probe() on __init section, that will never work for multiple
module insertions/removals.

In order to make it work properly, move probe to __devinit section and
use platform_driver_register() instead of platform_driver_probe().

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:29 -04:00
Felipe Balbi
927ce944ae mmc: omap_hsmmc: trivial cleanups
A bunch of non-functional cleanups to the omap_hsmmc driver.

It basically decreases indentation level, drop unneded dereferences
and drop unneded accesses to the platform_device structure.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:28 -04:00
Balaji T K
92a3aebf06 mmc: omap_hsmmc: context save after enabling runtime pm
Call context save api after enabling runtime pm to make sure that
register access in context save api happens with clk enabled.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:27 -04:00
Balaji T K
d59d77ed1e mmc: omap_hsmmc: use runtime put sync in probe error patch
pm_runtime_put_sync instead of autosuspend pm runtime API
because iounmap(host->base) follows immediately.

Reported-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:27 -04:00
Rafael J. Wysocki
e841a7c69b mmc: sdio: Use empty system suspend/resume callbacks at the bus level
Neil Brown reports that commit 35cd133c

   PM: Run the driver callback directly if the subsystem one is not there

breaks suspend for his libertas wifi, because SDIO has a protocol
where the suspend method can return -ENOSYS and this means "There is
no point in suspending, just turn me off".  Moreover, the suspend
methods provided by SDIO drivers are not supposed to be called by
the PM core or bus-level suspend routines (which aren't presend for
SDIO).  Instead, when the SDIO core gets to suspend the device's
ancestor, it calls the device driver's suspend function, catches the
ENOSYS, and turns the device off.

The commit above breaks the SDIO core's assumption that the device
drivers' callbacks won't be executed if it doesn't provide any
bus-level callbacks.  If fact, however, this assumption has never
been really satisfied, because device class or device type suspend
might very well use the driver's callback even without that commit.

The simplest way to address this problem is to make the SDIO core
tell the PM core to ignore driver callbacks, for example by providing
no-operation suspend/resume callbacks at the bus level for it,
which is implemented by this change.

Reported-and-tested-by: Neil Brown <neilb@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
[stable: please apply to 3.3-stable only]
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-04-05 20:32:26 -04:00