Commit Graph

239 Commits

Author SHA1 Message Date
Rafael J. Wysocki
6ed23b806e PM: Merge the SET*_RUNTIME_PM_OPS() macros
The SET_PM_RUNTIME_PM_OPS() and SET_RUNTIME_PM_OPS() macros are
identical except that one of them is not empty for CONFIG_PM set,
while the other one is not empty for CONFIG_PM_RUNTIME set,
respectively.

However, after commit b2b49ccbdd (PM: Kconfig: Set PM_RUNTIME if
PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so one
of these macros is now redundant.

For this reason, replace SET_PM_RUNTIME_PM_OPS() with
SET_RUNTIME_PM_OPS() everywhere and redefine the SET_PM_RUNTIME_PM_OPS
symbol as SET_RUNTIME_PM_OPS in case new code is starting to use the
macro being removed here.

Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-12-04 00:51:30 +01:00
Srinivas Kandagatla
b5c16a60e5 mmc: mmci: fix mmci_post_request
If the post request is cancelling the channel and descriptor and which are
equal to host->dma_current and host->dma_desc_current respectively, then it
makes sense to reset these pointers to NULL, so that the driver does not
reference it.

Also the host_cookie can be reset to 0 in cases of error, so that the
core could reissue the same mmc_request.

This patch was tested with 'mmc: core: fix prepared requests while doing
bkops' to fix the below issue.

mmci-pl18x 12400000.sdcc: error during DMA transfer!
Unable to handle kernel paging request at virtual address 40000000
pgd = c0204000
[40000000] *pgd=00000000
Internal error: Oops: 805 [#1] SMP ARM
Modules linked in: ipv6 ath6kl_sdio ath6kl_core
CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W      3.17.0-rc7-linaro-multi-v7 #1
task: c0c9d7e0 ti: c0c92000 task.ti: c0c92000
PC is at v7_dma_inv_range+0x34/0x4c
LR is at __dma_page_dev_to_cpu+0x80/0x100
pc : [<c021efc0>]    lr : [<c021af18>]    psr: 400f0193
sp : c0c93e20  ip : c0c9a478  fp : c08ea538
r10: c0c9f548  r9 : 00000002  r8 : e97d9000
r7 : 00000200  r6 : c0c9d504  r5 : c0db0880  r4 : 00000000
r3 : 0000003f  r2 : 00000040  r1 : 40000200  r0 : 40000000
Flags: nZcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 10c5787d  Table: a9ef406a  DAC: 00000015
Process swapper/0 (pid: 0, stack limit = 0xc0c92250)
Stack: (0xc0c93e20 to 0xc0c94000)
3e20: c021f058 e9a17178 e9a171bc e99dfd6c 00000001 00000001 e995de10 00000002
3e40: 00000000 c021b574 00000000 c04bc4a4 00000000 e9b49ac0 c0ce6e6c e99dfda4
3e60: 00000088 e9810780 c0d8291c c072ea58 00000000 c072d3fc 00000000 c072f534
3e80: 00000000 e9b49ac0 00000100 c0c9a444 00000088 c072f6b4 c072f5d4 e9d40080
3ea0: e98107dc 00000000 00000000 c0280a60 00000000 7d55bf61 e9810780 e98107dc
3ec0: 00000000 f0002000 c0d460e8 c0d460e8 c0c92000 c0280b60 e9810780 c0ce7190
3ee0: 00000000 c028369c c02835f4 00000088 00000088 c0280278 c0c8ec70 c020f080
3f00: f000200c c0c9a958 c0c93f28 c02088e4 c04bd630 c04bd5bc 200f0013 ffffffff
3f20: c0c93f5c c0212800 00000001 a987c000 c0c93f3c c04bd574 00000000 0000015b
3f40: ea7a0e40 00000000 c0d460e8 c0d460e8 c0c92000 c08ea538 29b12000 c0c93f70
3f60: c04bd630 c04bd5bc 200f0013 ffffffff c04bd574 c071bd24 7d50c9b4 c0719a44
3f80: 7d50c9b4 0000015b c0c9a498 c0c92028 c0c9a498 c0c9a4fc ea7a0e40 c0c8ee38
3fa0: c0d460e8 c0276198 00000000 c0d8291a 00000000 c0c9a400 00000000 c0be0bc4
3fc0: ffffffff ffffffff c0be05f8 00000000 00000000 c0c533d8 c0d82ed4 c0c9a47c
3fe0: c0c533d4 c0c9e870 8020406a 511f06f0 00000000 80208074 00000000 00000000
[<c021efc0>] (v7_dma_inv_range) from [<c021af18>] (__dma_page_dev_to_cpu+0x80/0x100)
[<c021af18>] (__dma_page_dev_to_cpu) from [<c021b574>] (arm_dma_unmap_sg+0x5c/0x84)
[<c021b574>] (arm_dma_unmap_sg) from [<c072ea58>] (mmci_dma_unmap.isra.16+0x60/0x74)
[<c072ea58>] (mmci_dma_unmap.isra.16) from [<c072f534>] (mmci_data_irq+0x1fc/0x29c)
[<c072f534>] (mmci_data_irq) from [<c072f6b4>] (mmci_irq+0xe0/0x114)
[<c072f6b4>] (mmci_irq) from [<c0280a60>] (handle_irq_event_percpu+0x78/0x134)
[<c0280a60>] (handle_irq_event_percpu) from [<c0280b60>] (handle_irq_event+0x44/0x64)
[<c0280b60>] (handle_irq_event) from [<c028369c>] (handle_fasteoi_irq+0xa8/0x1a8)
[<c028369c>] (handle_fasteoi_irq) from [<c0280278>] (generic_handle_irq+0x2c/0x3c)
[<c0280278>] (generic_handle_irq) from [<c020f080>] (handle_IRQ+0x40/0x90)
[<c020f080>] (handle_IRQ) from [<c02088e4>] (gic_handle_irq+0x38/0x68)
[<c02088e4>] (gic_handle_irq) from [<c0212800>] (__irq_svc+0x40/0x54)
Exception stack(0xc0c93f28 to 0xc0c93f70)
3f20:                   00000001 a987c000 c0c93f3c c04bd574 00000000 0000015b
3f40: ea7a0e40 00000000 c0d460e8 c0d460e8 c0c92000 c08ea538 29b12000 c0c93f70
3f60: c04bd630 c04bd5bc 200f0013 ffffffff
[<c0212800>] (__irq_svc) from [<c04bd5bc>] (msm_cpu_pm_enter_sleep+0x48/0x4c)
[<c04bd5bc>] (msm_cpu_pm_enter_sleep) from [<c071bd24>] (qcom_lpm_enter_spc+0x20/0x2c)
[<c071bd24>] (qcom_lpm_enter_spc) from [<c0719a44>] (cpuidle_enter_state+0x44/0xf0)
[<c0719a44>] (cpuidle_enter_state) from [<c0276198>] (cpu_startup_entry+0x1f4/0x238)
[<c0276198>] (cpu_startup_entry) from [<c0be0bc4>] (start_kernel+0x384/0x390)
Code: 1e070f3e e1110003 e1c11003 1e071f3e (ee070f36)
---[ end trace cf6cb3f6432c9834 ]---
Kernel panic - not syncing: Fatal exception in interrupt

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-11-10 12:40:29 +01:00
Linus Walleij
89168b4899 mmc: core: restore detect line inversion semantics
commit 98e90de99a
"mmc: host: switch OF parser to use gpio descriptors"
switched the semantic behaviour of card detect and read
only flags such that the inversion capability flag would
only be set if inversion was explicitly specified in the
device tree, in the hopes that no-one was using double
inversion.

It turns out that the XOR:ing between the explicit
inversion was indeed in use, so we need to restore the
old semantics where both ways of inversion are checked
and the end result XOR:ed.

Reported-by: Javier Martinez Canillas <javier@dowhile0.org>
Tested-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-10-02 11:51:26 +02:00
Srinivas Kandagatla
c735413363 mmc: mmci: rename sdio flag in vendor data to st_sdio
This patch renames sdio flag in vendor data to st_sdio, as this flag is
only used to enable ST specific sdio setup. This will also ensure that
the ST specfic setup is not done on other vendor like Qualcomm.

Originally the issue was detected while testing WLAN ath6kl on IFC6410
board with APQ8064 SOC.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-09-10 09:43:30 +02:00
Srinivas Kandagatla
5df014df12 mmc: mmci: Add sdio enable mask in variant data
This patch adds sdio enable mask in variant data, SOCs like ST have
special bits in datactrl register to enable sdio. Unconditionally setting
this bit in this driver breaks other SOCs like Qualcomm which maps this
bits to something else, so making this enable bit to come from variant
data solves the issue.

Originally the issue is detected while testing WLAN ath6kl on Qualcomm
APQ8064.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-09-10 09:43:30 +02:00
Linus Walleij
ce437aa451 mmc: mmci: augment driver to handle gpio descriptors
Currently the MMCI driver will only handle GPIO descriptors
implicitly through the device tree probe glue in mmc_of_init(),
but devices instatiated other ways such as through board files
and passing descriptors using the GPIO descriptor table will
not be able to exploit descriptors.

Augment the driver to look for a GPIO descriptor if device
tree is not used for the device, and if that doesn't work,
fall back to platform data GPIO assignment using the old
API. The end goal is to get rid of the platform data integer
GPIO assingments from the kernel.

This enable the MMCI-embedding platforms to be converted to
GPIO descritor tables.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-09-09 14:25:14 +02:00
Srinivas Kandagatla
9cb15142d0 mmc: mmci: Add qcom dml support to the driver.
On Qualcomm APQ8064 SOCs, SD card controller has an additional glue
called DML (Data Mover Local/Lite) to assist dma transfers.
This hardware needs to be setup before any dma transfer is requested.
DML itself is not a DMA engine, its just a gule between the SD card
controller and dma controller.

Most of this code has been ported from qualcomm's 3.4 kernel.

This patch adds the code necessary to intialize the hardware and setup
before doing any dma transfers.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-09-09 13:58:46 +02:00
Ulf Hansson
7878289b26 mmc: mmci: Reverse IRQ handling for the arm_variant
Commit "mmc: mmci: Handle CMD irq before DATA irq", caused an issue
when using the ARM model of the PL181 and running QEMU.

The bug was reported for the following QEMU version:
$ qemu-system-arm -version
QEMU emulator version 2.0.0 (Debian 2.0.0+dfsg-2ubuntu1.1), Copyright
(c) 2003-2008 Fabrice Bellard

To resolve the problem, let's restore the old behavior were the DATA
irq is handled prior the CMD irq, but only for the arm_variant, which
the problem was reported for.

Reported-by: John Stultz <john.stultz@linaro.org>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: Kees Cook <keescook@chromium.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-08-11 10:24:23 +02:00
Ulf Hansson
ad82bfea44 mmc: mmci: Move all CMD irq handling to mmci_cmd_irq()
This patch won't change the behavior of how mmci deals with CMD irqs.
By moving code from mmci_irq() to mmci_cmd_irq(), we getter a better
overview of what going on.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: Kees Cook <keescook@chromium.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-08-11 10:24:15 +02:00
Ulf Hansson
1cb9da5028 mmc: mmci: Remove redundant check of status for DATA irq
We don't need to verify the content of the status register twice, while
we are about to handle a DATA irq. Instead let's leave all verification
to be handled by mmci_data_irq().

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: Kees Cook <keescook@chromium.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-08-11 10:16:16 +02:00
Srinivas Kandagatla
55b604ae4b mmc: mmci: Add Qualcomm Id to amba id table
This patch adds a fake Qualcomm ID 0x00051180 to the amba_ids, as Qualcomm
SDCC controller is pl180, but amba id registers read 0x0's.
The plan is to remove SDCC driver totally and use mmci as the main SD
controller driver for Qualcomm SOCs.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:58 +02:00
Srinivas Kandagatla
9c34b73dee mmc: mmci: Add Qcom specific rx_fifocnt logic.
MCIFIFOCNT register behaviour on Qcom chips is very different than the other
pl180 integrations. MCIFIFOCNT register contains the number of
words that are still waiting to be transferred through the FIFO. It keeps
decrementing once the host CPU reads the MCIFIFO. With the existing logic and
the MCIFIFOCNT behaviour, mmci_pio_read will loop forever, as the FIFOCNT
register will always return transfer size before reading the FIFO.

Also the data sheet states that "This register is only useful for debug
purposes and should not be used for normal operation since it does not reflect
data which may or may not be in the pipeline".

This patch implements a qcom specific get_rx_fifocnt function which is
implemented based on status register flags. Based on qcom_fifo flag in
variant data structure, the corresponding get_rx_fifocnt function is selected.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:57 +02:00
Srinivas Kandagatla
3f4e6f7b91 mmc: mmci: add explicit clk control
On Controllers like Qcom SD card controller where cclk is mclk and mclk should
be directly controlled by the driver.

This patch adds support to control mclk directly in the driver, and also
adds explicit_mclk_control flag in variant structure giving more flexibility
to the driver.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
[Ulf Hansson] Fixed checkpatch warning
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:57 +02:00
Srinivas Kandagatla
dc6500bfe8 mmc: mmci: add f_max to variant structure
Some of the controller have maximum supported frequency, This patch adds
support in variant data structure to specify such restrictions. This
gives more flexibility in calculating the f_max before passing it to
mmc-core.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:56 +02:00
Srinivas Kandagatla
ae7b0061f6 mmc: mmci: Add support to data commands via variant structure.
On some SOCs like Qcom there are explicit bits in the command register
to specify if its a data transfer command or not. So this patch adds
support to such bits in variant data, giving more flexibility to the
driver.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:56 +02:00
Srinivas Kandagatla
e8740644ab mmc: mmci: add edge support to data and command out in variant data.
This patch adds edge support for data and command out to variant structure
giving more flexibility to the driver to support more SOCs which have
different clock register layout.

Without this patch other new SOCs like Qcom will have to add more code to
special case them

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
[Ulf Hansson] Resolved conflict
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:55 +02:00
Srinivas Kandagatla
e1412d85a8 mmc: mmci: add 8bit bus support in variant data
This patch adds 8bit bus enable to variant structure giving more flexibility
to the driver to support more SOCs which have different clock register layout.

Without this patch other new SOCs like Qcom will have to add more code
to special case them.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
[Ulf Hansson] Resolved conflict
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:55 +02:00
Srinivas Kandagatla
e17dca2b2d mmc: mmci: add ddrmode mask to variant data
This patch adds ddrmode mask to variant structure giving more flexibility
to the driver to support more SOCs which have different datactrl register
layout.

Without this patch datactrl register is updated with incorrect ddrmode mask,
resulting in failures on Qualcomm SD Card Controller.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
[Ulf Hansson] Resolved conflict
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:54 +02:00
Srinivas Kandagatla
ff783233cc mmc: mmci: Add Qcom datactrl register variant
Instance of this IP on Qualcomm's SOCs has bit different layout for datactrl
register. Bit position datactrl[16:4] hold the true block size instead of power
of 2.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:54 +02:00
Srinivas Kandagatla
6adb2a804a mmc: mmci: Add enough delay between writes to CMD register.
On Qcom SD Card controller POWER, CLKCTRL, DATACTRL and COMMAND registers
should be updated in MCLK domain, and writes to these registers must be
separated by three MCLK cycles. This resitriction is not applicable for
other registers. Any subsequent writes to these register will be ignored
until 3 MCLK have passed.

One usec delay between two CMD register writes is not sufficient in the
card identification phase where the CCLK is very low. This patch replaces
a static 1 usec delay to use mmci_reg_delay function which can provide
correct delay depending on the cclk frequency.

Without this patch the card is not detected.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:53 +02:00
Srinivas Kandagatla
c4a3576916 mmc: mmci: use NSEC_PER_SEC macro
This patch replaces a constant used in calculating timeout with a proper
macro. This is make code more readable.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-07-09 11:25:52 +02:00
Linus Torvalds
07888238f5 MMC highlights for 3.16:
Core:
  - support HS400 mode of eMMC 5.0, via DT bindings mmc-hs400-1_{2,8}v
  - if card init at 3.3v doesn't work, try 1.8v and 1.2v too
 
 Drivers:
  - moxart: New driver for MOXA ART SoCs
  - rtsx_usb_sdmmc: New driver for Realtek USB card readers
  - sdhci: Large rework around IRQ/regulator handling, remove card_tasklet
  - sdhci-pci-o2micro: Add SeaBird SeaEagle SD3 support
  - sunxi: New driver for Allwinner sunxi SoCs
  - usdhi6rol0: New driver for Renesas SD/SDIO controller
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Merge tag 'mmc-updates-for-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC update from Chris Ball:
 "MMC highlights for 3.16:

  Core:
   - support HS400 mode of eMMC 5.0, via DT bindings mmc-hs400-1_{2,8}v
   - if card init at 3.3v doesn't work, try 1.8v and 1.2v too

  Drivers:
   - moxart: New driver for MOXA ART SoCs
   - rtsx_usb_sdmmc: New driver for Realtek USB card readers
   - sdhci: Large rework around IRQ/regulator handling, remove card_tasklet
   - sdhci-pci-o2micro: Add SeaBird SeaEagle SD3 support
   - sunxi: New driver for Allwinner sunxi SoCs
   - usdhi6rol0: New driver for Renesas SD/SDIO controller"

* tag 'mmc-updates-for-3.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (95 commits)
  mmc: sdhci-s3c: use mmc_of_parse and remove the card_tasklet
  mmc: add a driver for the Renesas usdhi6rol0 SD/SDIO host controller
  mmc: sdhci-of-esdhc: Fixup compile error
  mmc: tegra: fix reporting of base clock frequency
  mmc: tegra: disable UHS modes
  mmc: sdhci-dove: use mmc_of_parse() and remove card_tasklet CD handler
  MAINTAINERS: mmc: Add path to git tree
  mmc: dove: fix missing MACH_DOVE dependency
  mmc: sdhci: SD tuning is broken for some controllers
  mmc: sdhci-esdhc-imx: fix mmc ddr mode regression issue
  mmc: sdhci-pci-o2micro: Add SeaBird SeaEagle SD3 support
  mmc: omap_hsmmc: split omap-dma header file
  mmc: omap_hsmmc: fix cmd23 multiblock read/write
  mmc: omap_hsmmc: use devm_ioremap_resource
  mmc: omap_hsmmc: use devm_request_threaded_irq
  mmc: omap_hsmmc: use devm_request_irq
  mmc: omap_hsmmc: use devm_clk_get
  mmc: sunxi: Add driver for SD/MMC hosts found on Allwinner sunxi SoCs
  mmc: wmt-sdmmc: Use GFP_KERNEL instead of hard-coded value
  mmc: omap: Use DIV_ROUND_UP instead of open coded
  ...
2014-06-10 14:35:22 -07:00
Ulf Hansson
8c3a05b489 mmc: mmci: Enforce DMA configuration through DT
Remove the option to provide DMA configuration as platform data,
enforce it through DT.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2014-06-02 11:20:25 +02:00
Ulf Hansson
5080a08d0f mmc: mmci: Enforce max frequency configuration through DT
Remove the option to provide a maximum frequency as platform data,
enforce it through DT.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-20 06:06:56 +02:00
Ulf Hansson
3faf80dfa3 mmc: mmci: Enforce mmc capabilities through DT
Remove the option to provide the flags for mmc capabilities as platform
data, enforce it through DT.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:45 +02:00
Ulf Hansson
4593df29b9 mmc: mmci: Enforce DT for signal direction and feedback clock
Remove the option to provide signal direction configuration and
feeback clock as platform data, enforce it through DT.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:45 +02:00
Ulf Hansson
9dd8a8b81c mmc: mmci: Enable MMC_CAP_CMD23
This is pure software configuration, which mmci has been supporting for
a while. Let's enable it as default so we can take benefit from it.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:42 +02:00
Ulf Hansson
78f87df2b4 mmc: mmci: Use the common mmc DT parser
Let mmci DT parser only handle the specific bindings related to mmci
and extend the DT support by converting to the common mmc DT parser.

While both DT and platform data exist, DT takes precedence. If there
are supplied DT data, the card detect and write protect GPIOS are
enforced to be provided through it.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:39 +02:00
Ulf Hansson
1a7e99c1fe mmc: mmci: Add DT bindings for feedback clock pin
The ST Micro variant supports the option of using a feedback clock signal in
favor of the clockout pin when latching incoming signals on the data bus.

Since this is matter of how pins are being routed we need to provide a new DT
binding to be able to configure this through DT.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2014-05-12 12:52:38 +02:00
Ulf Hansson
ae94cafe29 mmc: mmci: Add DT bindings for signal direction
Some variants have support for indicating the bus signal directions,
which currently are configured through platform data.

Add corresponding DT bindings to enable us to move away from using the
platform data.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
2014-05-12 12:52:37 +02:00
Ulf Hansson
ef289982f2 mmc: mmci: Convert to devm functions
Converting to devm functions to simplify error handling in ->probe() and
to cleanup ->remove().

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:36 +02:00
Ulf Hansson
d276209015 mmc: mmci: Convert to the mmc gpio API
To avoid duplication of code while handling card detect and write
protect GPIO pins/irqs, let's convert to use the mmc gpio API.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:35 +02:00
Ulf Hansson
f3737fa388 mmc: mmci: Put the device into low power state at system suspend
For CONFIG_PM_SLEEP, the device were always left in full power state
after system suspend.

We solely relied on a power domain to put it into low power state,
which is an unreasonable requirement to put on SOCs to implement.
Especially for those SOCs not supporting power domains at all.

Use pm_runtime_force_suspend|resume() as the system suspend callbacks,
to resolve the issue.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:35 +02:00
Ulf Hansson
571dce4f10 mmc: mmci: Let runtime PM callbacks be available for CONFIG_PM
Convert to the SET_PM_RUNTIME_PM macro while defining the runtime PM
callbacks. This means the callbacks becomes available for both
CONFIG_PM_SLEEP and CONFIG_PM_RUNTIME, which is needed to handle the
combinations of these scenarios.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:34 +02:00
Ulf Hansson
42dcc89a91 mmc: mmci: Mask IRQs for all variants during runtime suspend
In runtime suspended state, we are not expecting IRQs and thus we can
safely mask them, not only for pwrreg_nopower variants but for all.

Obviously we then also need to make sure we restore the IRQ mask while
becoming runtime resumed.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2014-05-12 12:52:34 +02:00
Seungwon Jeon
6dad6c9594 mmc: mmci: clarify DDR timing mode between SD-UHS and eMMC
Added MMC_DDR52 as eMMC's DDR mode distinguished from SD-UHS.

CC: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
2014-04-20 16:59:41 -04:00
Ulf Hansson
8d94b54d99 mmc: mmci: Enable support for busy detection for ux500 variant
The ux500 variants have HW busy detection support, which is indicated
by the busy_detect flag. For these variants let's enable the
MMC_CAP_WAIT_WHILE_BUSY flag and add the support for it.

The mmc core will provide the RSP_BUSY command flag for those requests
we should care about busy detection. Regarding the max_busy_timeout,
the HW don't support busy detection timeouts so at this initial step
let's make it simple and set it to zero to indicate we are able to
support any timeout.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Johan Rudholm <jrudholm@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
2014-02-23 10:41:21 -05:00
Ulf Hansson
e7f3d22289 mmc: mmci: Handle CMD irq before DATA irq
In case of a read operation both MCI_CMDRESPEND and MCI_DATAEND can be
set in the status register when entering the interrupt handler. This is
due to that the card start sending data before the host has
acknowledged the command response.

To resolve the issue for this scenario, we must start by handling the
CMD irq instead of the DATA irq. The reason is beacuse the completion
of the DATA irq will not respect the current command and then causing
it to be garbled.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Johan Rudholm <jrudholm@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
2014-02-23 10:41:17 -05:00
Michal Simek
23c34527a4 ARM: 7906/1: mmc: mmci: Remove unnecessary amba_set_drvdata()
Driver core clears the driver data to NULL after device_release
or on probe failure, so just remove it from here.

Driver core change:
"device-core: Ensure drvdata = NULL when no driver is bound"
(sha1: 0998d06310)

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-12-29 12:32:36 +00:00
Linus Torvalds
c2ac2ae44d MMC highlights for 3.13:
Core:
  - Improve runtime PM support, remove mmc_{suspend,resume}_host().
  - Add MMC_CAP_RUNTIME_RESUME, for delaying MMC resume until we're
    outside of the resume sequence (in runtime_resume) to decrease
    system resume time.
 
 Drivers:
  - dw_mmc: Support HS200 mode.
  - sdhci-eshdc-imx: Support SD3.0 SDR clock tuning, DDR on IMX6.
  - sdhci-pci: Add support for Intel Clovertrail and Merrifield.
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Merge tag 'mmc-updates-for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC updates from Chris Ball:
 "MMC highlights for 3.13:

  Core:
   - Improve runtime PM support, remove mmc_{suspend,resume}_host().
   - Add MMC_CAP_RUNTIME_RESUME, for delaying MMC resume until we're
     outside of the resume sequence (in runtime_resume) to decrease
     system resume time.

  Drivers:
   - dw_mmc: Support HS200 mode.
   - sdhci-eshdc-imx: Support SD3.0 SDR clock tuning, DDR on IMX6.
   - sdhci-pci: Add support for Intel Clovertrail and Merrifield"

* tag 'mmc-updates-for-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (108 commits)
  mmc: wbsd: Silence compiler warning
  mmc: core: Silence compiler warning in __mmc_switch
  mmc: sh_mmcif: Convert to clk_prepare|unprepare
  mmc: sh_mmcif: Convert to PM macros when defining dev_pm_ops
  mmc: dw_mmc: exynos: Revert the sdr_timing assignment
  mmc: sdhci: Avoid needless loop while handling SDIO interrupts in sdhci_irq
  mmc: core: Add MMC_CAP_RUNTIME_RESUME to resume at runtime_resume
  mmc: core: Improve runtime PM support during suspend/resume for sd/mmc
  mmc: core: Remove redundant mmc_power_up|off at runtime callbacks
  mmc: Don't force card to active state when entering suspend/shutdown
  MIPS: db1235: Don't use MMC_CLKGATE
  mmc: core: Remove deprecated mmc_suspend|resume_host APIs
  mmc: mmci: Move away from using deprecated APIs
  mmc: via-sdmmc: Move away from using deprecated APIs
  mmc: tmio: Move away from using deprecated APIs
  mmc: sh_mmcif: Move away from using deprecated APIs
  mmc: sdricoh_cs: Move away from using deprecated APIs
  mmc: rtsx: Remove redundant suspend and resume callbacks
  mmc: wbsd: Move away from using deprecated APIs
  mmc: pxamci: Remove redundant suspend and resume callbacks
  ...
2013-11-18 14:47:30 -08:00
Ulf Hansson
578aebc7d6 mmc: mmci: Move away from using deprecated APIs
Suspend and resume of cards are being handled from the protocol layer
and consequently the mmc_suspend|resume_host APIs are deprecated.

This means we can simplify the suspend|resume callbacks by removing the
use of the deprecated APIs.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-10-30 20:28:37 -04:00
Ulf Hansson
1ff44433c6 ARM: 7834/1: mmc: mmci: Save and restore register context
If a corresponding power domain exists for the device and it manages
to cut the domain regulator while the device is runtime suspended,
the IP loses it's registers context. We restore the context in the
.runtime_resume callback from the existing register caches to adapt
to this situation.

We also want to make sure the registers are in a known state while
restoring context in the case when the power domain did not drop the
power, since there are restrictions for the order of writing to these
registers. To handle this, we clear the registers in the
.runtime_suspend callback.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rickard Andersson <rickard.andersson@stericsson.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-09-19 20:12:25 +01:00
Ulf Hansson
f829c04204 ARM: 7833/1: mmc: mmci: Adapt to register write restrictions
After a write to the MMCICLOCK register data cannot be written to this
register for three feedback clock cycles. Writes to the MMCIPOWER
register must be separated by three MCLK cycles. Previously no issues
has been observered, but using higher ARM clock frequencies on STE-
platforms has triggered this problem.

The MMCICLOCK register is written to in .set_ios and for some data
transmissions for SDIO. We do not need a delay at the data transmission
path, because sending and receiving data will require more than three
clock cycles. Then we use a simple logic to only delay in .set_ios and
thus we don't affect throughput performance.

Signed-off-by: Johan Rudholm <jrudholm@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rickard Andersson <rickard.andersson@stericsson.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-09-19 20:12:24 +01:00
Ulf Hansson
e36bd9c6c9 ARM: 7832/1: mmc: mmci: Use optional sleep pinctrl state
By optionally putting the pins into sleep state in the .runtime_suspend
callback we can accomplish two things. One is to minimize current leakage
from pins and thus save power, second we can prevent the IP from driving
pins output in an uncontrolled manner, which may happen if the power domain
drops the domain regulator.

When returning from idle, entering .runtime_resume callback, the pins
are restored to default state.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rickard Andersson <rickard.andersson@stericsson.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-09-19 20:12:24 +01:00
Ulf Hansson
edaf6d3d26 ARM: 7831/1: mmc: mmci: Adapt to new pinctrl handling
There is no need for every driver to fetch a pinctrl handle and to
select the default state. Instead this is handled by the device driver
core, thus we can remove this piece of code from mmci.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-09-19 20:12:23 +01:00
Ulf Hansson
0125962000 ARM: 7726/1: mmc: mmci: Add card_busy function to improve UHS card support
To verify a signal voltage switch at initialization of UHS cards the
.card_busy callback is used. For some of the ST-variants, card busy
detection on the DAT0 pin is supported.

We extend the variant struct with a busy_detect flag to indicate
support for it. A corresponding busy detect function, which polls the
busy status bit, is then set to the .card_busy callback.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-23 00:09:16 +01:00
Ulf Hansson
9cc639a20f ARM: 7725/1: mmc: mmci: Cache MMCIDATACTRL register
Add a cache variable in the host struct that reflects the current data in
the MMCIDATACTRL register. This patch will not introduce any functional
change but instead provide an easy option to keep specific bits in the
register between each data transfer.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-23 00:09:15 +01:00
Ulf Hansson
0f3ed7f75c ARM: 7724/1: mmc: mmci: Support signal voltage switch for UHS cards
Add .start_signal_voltage_switch callback to be able to support UHS cards.
The voltage switch requires the optional vqmmc regulator to exist since
the actual voltage switch will be performed directly on it.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-23 00:07:38 +01:00
Ulf Hansson
7c0136ef77 ARM: 7721/1: mmc: mmci: Fixup regulator handling for vqmmc
We can not rely on regulator_is_enabled to decide whether to
enable|disable the regulator. It would mean that the reference
counter for it is not balanced properly.

Instead keep track of our internal state by using a new flag in
the host struct, so we can take correct decisions.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-23 00:07:07 +01:00
Lee Jones
1fd83f0ecf ARM: 7713/1: mmc: mmci: Allow MMCI to request channels with information acquired from DT
Currently, if DMA information isn't passed from platform data, then DMA
will not be used. This patch allows DMA information obtained though Device
Tree to be used as well.

Cc: Chris Ball <cjb@laptop.org>
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-23 00:07:04 +01:00
Ulf Hansson
024629c62f ARM: 7719/1: mmc: mmci: Support for CMD23
Support added for transmission of CMD23 during multi block read or
write. In order to activate this feature, MMC_CAP_CMD23 flag needs
to be enabled in the capabilities field. Note that CMD23 support is
mandatory to support features like reliable write, data tag, context
ID, packed command.

This patch is based upon a patch from Saugata Das.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-23 00:07:03 +01:00
Ulf Hansson
c58a85090c ARM: 7718/1: mmc: mmci: Set actual clock for debug purpose
Update cclk to the acutal used value and copy it to the actual_clock
variable in the mmc host for debug purpose.

Signed-off-by: Fredrik Soderstedt <fredrik.soderstedt@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-23 00:07:01 +01:00
Ulf Hansson
665ba56fda ARM: 7717/1: mmc: mmci: Use devm_clk_get API
Converting to devm_clk_get simplifies error handling in probe
and we can remove other corresponding calls to clk_put.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-23 00:07:00 +01:00
Lee Jones
db90f91f6f ARM: 7714/1: mmc: mmci: Ensure return value of regulator_enable() is checked
This patch suppresses the warning below:

drivers/mmc/host/mmci.c: In function ‘mmci_set_ios’:
drivers/mmc/host/mmci.c:1165:20: warning: ignoring return value of
        ‘regulator_enable’, declared with attribute warn_unused_result
        [-Wunused-result]

Cc: Chris Ball <cjb@laptop.org>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-05-10 14:44:17 +01:00
Lee Jones
237fb5e675 mmc: mmci: Move ios_handler functionality into the driver
There are currently two instances of the ios_handler being used.
Both of which mearly toy with some regulator settings. Now there
is a GPIO regulator API, we can use that instead, and lessen the
per platform burden. By doing this, we also become more Device
Tree compatible.

Acked-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-03-01 23:25:25 +01:00
Ulf Hansson
653a761e4b ARM: 7630/1: mmc: mmci: Fixup and cleanup code for DMA handling
The cookie is now used to indicate if dma_unmap_sg shall be
done in post_request. At DMA errors, the DMA job is immediately
not only terminated but also unmapped. To indicate that this
has been done the cookie is reset to zero. post_request will
thus only do dma_umap_sg for requests which has a cookie not set
to zero.

Some corresponding duplicated code could then be removed and
moreover some corrections at DMA errors for terminating the same
DMA job twice has also been fixed.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Per Forlin <per.forlin@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-28 14:14:48 +00:00
Pawel Moll
3a37298ada ARM: 7631/1: mmc: mmci: Add new VE MMCI variant
The Versatile Express IOFPGA as shipped on VECD 5.0 (bitfiles v108/208
and v116/216) contains a modified version of the PL180 MMCI, with
PeriphID Configuration value changed to 0x2.

This version adds an optional "hardware flow control" feature. When
enabled MMC card clock will be automatically disabled when FIFO is
about to over/underflow and re-enabled once the host retrieved some
data. This makes the controller immune to over/underrun errors caused
by big interrupt handling latencies.

This patch adds relevant device variant in the driver.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-28 14:11:53 +00:00
Ulf Hansson
f4670daef5 ARM: 7623/1: mmc: mmci: Fixup clock gating when freq is 0 for ST-variants
In the ST Micro variant, the MMCICLOCK register must not be used to
gate the clock. Instead use MMCIPOWER register and by clearing the
PWR_ON bit to do this.

Signed-off-by: Johan Rudholm <johan.rudholm@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-23 10:17:00 +00:00
Ulf Hansson
8259293aee ARM: 7622/1: mmc: mmci: Gate the clock in runtime suspend to save power
The amba bus is already performing same actions but for the apb_pclk.
So here we just make sure the clock to card is gated as well to save
more power. At runtime resume we will thus restore the clock again.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-23 10:16:59 +00:00
Ulf Hansson
599c1d5c75 ARM: 7620/1: mmc: mmci: Convert to use mmc_regulator_get_supply
By using the mmc_regulator_get_supply API we are able to do some
cleanups of the regulator code. Additionally let the regulator
API handle the error printing.

Cc: Chris Ball <cjb@laptop.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-08 16:32:44 +00:00
Ulf Hansson
70be208f0b ARM: 7618/1: mmc: mmci: Support MMC_PM_KEEP_POWER
Add MMC_PM_KEEP_POWER to pm_caps so SDIO clients are able
to use this option to prevent power off in suspend.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-08 16:32:43 +00:00
Ulf Hansson
6dbb6ee090 ARM: 7617/1: mmc: mmci: Support for DDR mode
Add support for DDR mode which may be used for the ux500v2 variant.
Corresponding capabilities to enable the DDR support must be set in
the platform struct to enable the functionality.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2013-01-08 16:32:43 +00:00
Linus Torvalds
b1286f4e9a Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King:
 "Here's the updates for ARM for this merge window, which cover quite a
  variety of areas.

  There's a bunch of patch series from Will tackling various bugs like
  the PROT_NONE handling, ASID allocation, cluster boot protocol and
  ASID TLB tagging updates.

  We move to a build-time sorted exception table rather than doing the
  sorting at run-time, add support for the secure computing filter, and
  some updates to the perf code.  We also have sorted out the placement
  of some headers, fixed some build warnings, fixed some hotplug
  problems with the per-cpu TWD code."

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (73 commits)
  ARM: 7594/1: Add .smp entry for REALVIEW_EB
  ARM: 7599/1: head: Remove boot-time HYP mode check for v5 and below
  ARM: 7598/1: net: bpf_jit_32: fix sp-relative load/stores offsets.
  ARM: 7595/1: syscall: rework ordering in syscall_trace_exit
  ARM: 7596/1: mmci: replace readsl/writesl with ioread32_rep/iowrite32_rep
  ARM: 7597/1: net: bpf_jit_32: fix kzalloc gfp/size mismatch.
  ARM: 7593/1: nommu: do not enable DCACHE_WORD_ACCESS when !CONFIG_MMU
  ARM: 7592/1: nommu: prevent generation of kernel unaligned memory accesses
  ARM: 7591/1: nommu: Enable the strict alignment (CR_A) bit only if ARCH < v6
  ARM: 7590/1: /proc/interrupts: limit the display of IPIs to online CPUs only
  ARM: 7587/1: implement optimized percpu variable access
  ARM: 7589/1: integrator: pass the lm resource to amba
  ARM: 7588/1: amba: create a resource parent registrator
  ARM: 7582/2: rename kvm_seq to vmalloc_seq so to avoid confusion with KVM
  ARM: 7585/1: kernel: fix nr_cpu_ids check in DT logical map init
  ARM: 7584/1: perf: fix link error when CONFIG_HW_PERF_EVENTS is not selected
  ARM: gic: use a private mapping for CPU target interfaces
  ARM: kernel: add logical mappings look-up
  ARM: kernel: add cpu logical map DT init in setup_arch
  ARM: kernel: add device tree init map function
  ...
2012-12-12 11:30:02 -08:00
Davide Ciminaghi
4b85da08c4 ARM: 7596/1: mmci: replace readsl/writesl with ioread32_rep/iowrite32_rep
Not all the architectures have readsl/writesl,
use the more portable ioread32_rep/iowrite32_rep functions instead.

Signed-off-by: Davide Ciminaghi <ciminaghi@gnudd.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-12-11 00:18:08 +00:00
Bill Pemberton
6e0ee714fd mmc: remove use of __devexit
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28 12:28:18 -08:00
Bill Pemberton
c3be1efd41 mmc: remove use of __devinit
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Chris Ball <cjb@laptop.org>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28 12:28:18 -08:00
Bill Pemberton
0433c14356 mmc: remove use of __devexit_p
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Chris Ball <cjb@laptop.org>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Venkatraman S <svenkatr@ti.com>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28 12:28:09 -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
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
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
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
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
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
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
Linus Torvalds
ef08e78268 Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine update from Vinod Koul:
 "This includes the cookie cleanup by Russell, the addition of context
  parameter for dmaengine APIs, more arm dmaengine driver cleanup by
  moving code to dmaengine, this time for imx by Javier and pl330 by
  Boojin along with the usual driver fixes."

Fix up some fairly trivial conflicts with various other cleanups.

* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (67 commits)
  dmaengine: imx: fix the build failure on x86_64
  dmaengine: i.MX: Fix merge of cookie branch.
  dmaengine: i.MX: Add support for interleaved transfers.
  dmaengine: imx-dma: use 'dev_dbg' and 'dev_warn' for messages.
  dmaengine: imx-dma: remove 'imx_dmav1_baseaddr' and 'dma_clk'.
  dmaengine: imx-dma: remove unused arg of imxdma_sg_next.
  dmaengine: imx-dma: remove internal structure.
  dmaengine: imx-dma: remove 'resbytes' field of 'internal' structure.
  dmaengine: imx-dma: remove 'in_use' field of 'internal' structure.
  dmaengine: imx-dma: remove sg member from internal structure.
  dmaengine: imx-dma: remove 'imxdma_setup_sg_hw' function.
  dmaengine: imx-dma: remove 'imxdma_config_channel_hw' function.
  dmaengine: imx-dma: remove 'imxdma_setup_mem2mem_hw' function.
  dmaengine: imx-dma: remove dma_mode member of internal structure.
  dmaengine: imx-dma: remove data member from internal structure.
  dmaengine: imx-dma: merge old dma-v1.c with imx-dma.c
  dmaengine: at_hdmac: add slave config operation
  dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic
  dmaengine/dma_slave: introduce inline wrappers
  dma: imx-sdma: Treat firmware messages as warnings instead of erros
  ...
2012-03-29 15:34:57 -07:00
Linus Torvalds
0d19eac120 Merge branch 'amba' of git://git.linaro.org/people/rmk/linux-arm
Pull #2 ARM updates from Russell King:
 "Further ARM AMBA primecell updates which aren't included directly in
  the previous commit.  I wanted to keep these separate as they're
  touching stuff outside arch/arm/."

* 'amba' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7362/1: AMBA: Add module_amba_driver() helper macro for amba_driver
  ARM: 7335/1: mach-u300: do away with MMC config files
  ARM: 7280/1: mmc: mmci: Cache MMCICLOCK and MMCIPOWER register
  ARM: 7309/1: realview: fix unconnected interrupts on EB11MP
  ARM: 7230/1: mmc: mmci: Fix PIO read for small SDIO packets
  ARM: 7227/1: mmc: mmci: Prepare for SDIO before setting up DMA job
  ARM: 7223/1: mmc: mmci: Fixup use of runtime PM and use autosuspend
  ARM: 7221/1: mmc: mmci: Change from using legacy suspend
  ARM: 7219/1: mmc: mmci: Change vdd_handler to a generic ios_handler
  ARM: 7218/1: mmc: mmci: Provide option to configure bus signal direction
  ARM: 7217/1: mmc: mmci: Put power register deviations in variant data
  ARM: 7216/1: mmc: mmci: Do not release spinlock in request_end
  ARM: 7215/1: mmc: mmci: Increase max_segs from 16 to 128
2012-03-23 17:36:29 -07:00
Linus Torvalds
56c10bf82c Merge branch 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm
Pull #1 ARM updates from Russell King:
 "This one covers stuff which Arnd is waiting for me to push, as this is
  shared between both our trees and probably other trees elsewhere.

  Essentially, this contains:
   - AMBA primecell device initializer updates - mostly shrinking the
     size of the device declarations in platform code to something more
     reasonable.
   - Getting rid of the NO_IRQ crap from AMBA primecell stuff.
   - Nicolas' idle cleanups.  This in combination with the restart
     cleanups from the last merge window results in a great many
     mach/system.h files being deleted."

Yay: ~80 files, ~2000 lines deleted.

* 'for-armsoc' of git://git.linaro.org/people/rmk/linux-arm: (60 commits)
  ARM: remove disable_fiq and arch_ret_to_user macros
  ARM: make entry-macro.S depend on !MULTI_IRQ_HANDLER
  ARM: rpc: make default fiq handler run-time installed
  ARM: make arch_ret_to_user macro optional
  ARM: amba: samsung: use common amba device initializers
  ARM: amba: spear: use common amba device initializers
  ARM: amba: nomadik: use common amba device initializers
  ARM: amba: u300: use common amba device initializers
  ARM: amba: lpc32xx: use common amba device initializers
  ARM: amba: netx: use common amba device initializers
  ARM: amba: bcmring: use common amba device initializers
  ARM: amba: ep93xx: use common amba device initializers
  ARM: amba: omap2: use common amba device initializers
  ARM: amba: integrator: use common amba device initializers
  ARM: amba: realview: get rid of private platform amba_device initializer
  ARM: amba: versatile: get rid of private platform amba_device initializer
  ARM: amba: vexpress: get rid of private platform amba_device initializer
  ARM: amba: provide common initializers for static amba devices
  ARM: amba: make use of -1 IRQs warn
  ARM: amba: u300: get rid of NO_IRQ initializers
  ...
2012-03-23 17:30:49 -07:00
Russell King
bba1594d34 Merge branch 'mmci' into amba 2012-03-24 00:10:36 +00:00
Alexandre Bounine
16052827d9 dmaengine/dma_slave: introduce inline wrappers
Add inline wrappers for device_prep_slave_sg() and device_prep_dma_cyclic()
interfaces to hide new parameter from current users of affected interfaces.
Convert current users to use new wrappers instead of direct calls.
Suggested by Russell King [https://lkml.org/lkml/2012/2/3/269].

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-21 19:20:22 +05:30
viresh kumar
9e5ed094c8 ARM: 7362/1: AMBA: Add module_amba_driver() helper macro for amba_driver
For simple modules that contain a single amba_driver without any
additional setup code then ends up being a block of duplicated
boilerplate. This patch adds a new macro, module_amba_driver(),
which replaces the module_init()/module_exit() registrations with
template functions.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-16 23:32:35 +00:00
Will Deacon
8f7f6b7e46 mmc: mmci: reduce max_blk_count to avoid overflowing max_req_size
On a system with large pages (64k in my case), the following BUG is
triggered in MMC core:

[    2.338023] BUG: failure at drivers/mmc/core/core.c:221/mmc_start_request()!
[    2.338102] Kernel panic - not syncing: BUG!
[    2.338155] Call trace:
[    2.338228] [<ffffffc00008635c>] dump_backtrace+0x0/0x120
[    2.338317] [<ffffffc0003365ec>] dump_stack+0x14/0x1c
[    2.338403] [<ffffffc000336990>] panic+0xbc/0x1f0
[    2.338498] [<ffffffc00027a494>] mmc_start_request+0x154/0x184
[    2.338600] [<ffffffc00027abdc>] mmc_start_req+0x110/0x140
[    2.338701] [<ffffffc00028604c>] mmc_blk_issue_rw_rq+0x7c/0x39c
[    2.338804] [<ffffffc00028652c>] mmc_blk_issue_rq+0x1c0/0x468
[    2.338905] [<ffffffc000287564>] mmc_queue_thread+0x68/0x118
[    2.338995] [<ffffffc0000bc308>] kthread+0x84/0x8c

This is because of a 64k request with a max_req_size of 64k-1 bytes.

The following patch fixes the problem by limiting the max_blk_count
such that max_blk_count * max_blk_size == max_req_size. I couldn't
pursuade the compiler to emit a shift instead of a div without encoding
the shift explicitly.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2012-03-04 12:25:14 -05:00
Viresh Kumar
258aea76f5 dmaengine: Pass dma_slave_config .device_fc = NULL for all existing users
.device_fc is added in struct dma_slave_config recently. All user drivers, which
want DMA to be the flow controller must pass this field as false. As earlier
driver don't look to use this feature, mark it false for now.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-02-22 18:15:37 +05:30
Ulf Hansson
7437cfa532 ARM: 7280/1: mmc: mmci: Cache MMCICLOCK and MMCIPOWER register
Instead of reading a register value everytime we need to
apply a new value for it, maintain a cached copy for it.
This also means we are able to skip writes that are not
needed.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-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>
2012-02-02 17:02:15 +00:00
Russell King
023f117c54 ARM: amba: make irq 0 invalid
Fix core bus and MMCI such that irq 0 means that there is no IRQ
attached.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-25 11:02:02 +00:00
Ulf Hansson
393e5e2416 ARM: 7230/1: mmc: mmci: Fix PIO read for small SDIO packets
Corrects a bug in MMCI host driver which silently causes
small reads (< 4 bytes as only used in SDIO) from PL-18X to fail.

Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Fredrik Soderstedt <fredrik.soderstedt@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 00:00:59 +00:00
Ulf Hansson
7258db7efe ARM: 7227/1: mmc: mmci: Prepare for SDIO before setting up DMA job
Move the SDIO preparation to be done before the DMA job is setup.
This makes it possible to do DMA for SDIO transfers as well as the
earlier supported pio mode.

Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Stefan Nilsson XK <stefan.xk.nilsson@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 00:00:58 +00:00
Ulf Hansson
2cd976c464 ARM: 7223/1: mmc: mmci: Fixup use of runtime PM and use autosuspend
Added use of runtime PM autosuspend feature, with a fixed
timeout of 50 ms. This will prevent adding a latency,
although very minor, for _every_ request.

Moreover the runtime_get_sync is now also used in set_ios and
suspend since the runtime resourses are needed here as well.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 00:00:58 +00:00
Ulf Hansson
48fa700388 ARM: 7221/1: mmc: mmci: Change from using legacy suspend
This patch switch from using the legacy suspend/resume
to the new way of registering PM callbacks. No functional
change is done.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 00:00:57 +00:00
Ulf Hansson
bc521818e2 ARM: 7219/1: mmc: mmci: Change vdd_handler to a generic ios_handler
The purpose of the vdd_handler does not make sense. We remove it
and use a generic approach instead. A new ios_handler is added, the
purpose of which e.g. can be to control GPIO pins to a levelshifter.

Previously the vdd_handler was also used for making additional
changes to the power register bits. This option is superfluous and is
therefore removed.

Adaptaptions from the old vdd_handler to the new ios_handler is done for
mach-ux500 board, which was the only one using the vdd_handler.

This patch is based upon a patch from Sebastian Rasmussen.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 00:00:56 +00:00
Ulf Hansson
4d1a3a0dc5 ARM: 7218/1: mmc: mmci: Provide option to configure bus signal direction
The ST Micro variant supports bus signal direction indication. A new
member in the variant struct is added for this.

Moreover the actual signal direction configuration is board specific,
thus the amba mmci platform data is extended with a new member to be
able provide mmci with these specific board configurations.

This patch is based upon a patch from Sebastian Rasmussen.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 00:00:56 +00:00
Ulf Hansson
7d72a1d48a ARM: 7217/1: mmc: mmci: Put power register deviations in variant data
Use variant data to store hardware controller deviations concerning
power registers to improve readability of the code.

Signed-off-by: Sebastian Rasmussen <sebastian.rasmussen@stericsson.com>
Tested-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 00:00:55 +00:00
Ulf Hansson
5074d25dc9 ARM: 7216/1: mmc: mmci: Do not release spinlock in request_end
The patch "mmc: core: move ->request() call from atomic context",
is the reason to why this change is possible. This simplifies the
error handling code execution path quite a lot and potentially also
fixes some error handling hang problems.

Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-20 00:00:55 +00:00
Linus Torvalds
57f2685c16 Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (53 commits)
  ARM: mach-shmobile: specify CHCLR registers on SH7372
  dma: shdma: fix runtime PM: clear channel buffers on reset
  dma/imx-sdma: save irq flags when use spin_lock in sdma_tx_submit
  dmaengine/ste_dma40: clear LNK on channel startup
  dmaengine: intel_mid_dma: remove legacy pm interface
  ASoC: mxs: correct 'direction' of device_prep_dma_cyclic
  dmaengine: intel_mid_dma: error path fix
  dmaengine: intel_mid_dma: locking and freeing fixes
  mtd: gpmi-nand: move to dma_transfer_direction
  mtd: fix compile error for gpmi-nand
  mmc: mxs-mmc: fix the dma_transfer_direction migration
  dmaengine: add DMA_TRANS_NONE to dma_transfer_direction
  dma: mxs-dma: Don't use CLKGATE bits in CTRL0 to disable DMA channels
  dma: mxs-dma: make mxs_dma_prep_slave_sg() multi user safe
  dma: mxs-dma: Always leave mxs_dma_init() with the clock disabled.
  dma: mxs-dma: fix a typo in comment
  DMA: PL330: Remove pm_runtime_xxx calls from pl330 probe/remove
  video i.MX IPU: Fix display connections
  i.MX IPU DMA: Fix wrong burstsize settings
  dmaengine/ste_dma40: allow fixed physical channel
  ...

Fix up conflicts in drivers/dma/{Kconfig,mxs-dma.c,pl330.c}

The conflicts looked pretty trivial, but I'll ask people to verify them.
2012-01-17 18:40:24 -08:00