Commit Graph

5696 Commits

Author SHA1 Message Date
Benoît Thébaudeau
499ed50f60 mmc: sdhci-esdhc-imx: Fix i.MX53 eSDHCv3 clock
Commit 5143c953a7 ("mmc: sdhci-esdhc-imx: Allow all supported
prescaler values") made it possible to set SYSCTL.SDCLKFS to 0 in SDR
mode, thus bypassing the SD clock frequency prescaler, in order to be
able to get higher SD clock frequencies in some contexts. However, that
commit missed the fact that this value is illegal on the eSDHCv3
instance of the i.MX53. This seems to be the only exception on i.MX,
this value being legal even for the eSDHCv2 instances of the i.MX53.

Fix this issue by changing the minimum prescaler value if the i.MX53
eSDHCv3 is detected. According to the i.MX53 reference manual, if
DLLCTRL[10] can be set, then the controller is eSDHCv3, else it is
eSDHCv2.

This commit fixes the following issue, which was preventing the i.MX53
Loco (IMX53QSB) board from booting Linux 4.15.0-rc5:
[    1.882668] mmcblk1: error -84 transferring data, sector 2048, nr 8, cmd response 0x900, card status 0xc00
[    2.002255] mmcblk1: error -84 transferring data, sector 2050, nr 6, cmd response 0x900, card status 0xc00
[   12.645056] mmc1: Timeout waiting for hardware interrupt.
[   12.650473] mmc1: sdhci: ============ SDHCI REGISTER DUMP ===========
[   12.656921] mmc1: sdhci: Sys addr:  0x00000000 | Version:  0x00001201
[   12.663366] mmc1: sdhci: Blk size:  0x00000004 | Blk cnt:  0x00000000
[   12.669813] mmc1: sdhci: Argument:  0x00000000 | Trn mode: 0x00000013
[   12.676258] mmc1: sdhci: Present:   0x01f8028f | Host ctl: 0x00000013
[   12.682703] mmc1: sdhci: Power:     0x00000002 | Blk gap:  0x00000000
[   12.689148] mmc1: sdhci: Wake-up:   0x00000000 | Clock:    0x0000003f
[   12.695594] mmc1: sdhci: Timeout:   0x0000008e | Int stat: 0x00000000
[   12.702039] mmc1: sdhci: Int enab:  0x107f004b | Sig enab: 0x107f004b
[   12.708485] mmc1: sdhci: AC12 err:  0x00000000 | Slot int: 0x00001201
[   12.714930] mmc1: sdhci: Caps:      0x07eb0000 | Caps_1:   0x08100810
[   12.721375] mmc1: sdhci: Cmd:       0x0000163a | Max curr: 0x00000000
[   12.727821] mmc1: sdhci: Resp[0]:   0x00000920 | Resp[1]:  0x00000000
[   12.734265] mmc1: sdhci: Resp[2]:   0x00000000 | Resp[3]:  0x00000000
[   12.740709] mmc1: sdhci: Host ctl2: 0x00000000
[   12.745157] mmc1: sdhci: ADMA Err:  0x00000001 | ADMA Ptr: 0xc8049200
[   12.751601] mmc1: sdhci: ============================================
[   12.758110] print_req_error: I/O error, dev mmcblk1, sector 2050
[   12.764135] Buffer I/O error on dev mmcblk1p1, logical block 0, lost sync page write
[   12.775163] EXT4-fs (mmcblk1p1): mounted filesystem without journal. Opts: (null)
[   12.782746] VFS: Mounted root (ext4 filesystem) on device 179:9.
[   12.789151] mmcblk1: response CRC error sending SET_BLOCK_COUNT command, card status 0x900

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
Reported-by: Wladimir J. van der Laan <laanwj@gmail.com>
Tested-by: Wladimir J. van der Laan <laanwj@gmail.com>
Fixes: 5143c953a7 ("mmc: sdhci-esdhc-imx: Allow all supported prescaler values")
Cc: <stable@vger.kernel.org> # v4.13+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-15 13:50:19 +01:00
Masahiro Yamada
de21dc1d9a mmc: tmio: use mmc_can_gpio_cd() instead of checking TMIO_MMC_USE_GPIO_CD
To use a GPIO line for card detection, TMIO_MMC_USE_GPIO_CD is set
by a legacy board (arch/sh/boards/mach-ecovec24).

For DT platforms, the "cd-gpios" property is a legitimate way for that
in case the IP-builtin card detection can not be used for some reason.
mmc_of_parse() calls mmc_gpiod_request_cd() to set up ctx->cd_gpio if
the "cd-gpios" property is specified.

To cater to both cases, mmc_can_gpio_cd() is a correct way to check
which card detection logic is used.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-12 15:15:54 +01:00
Andy Shevchenko
2a609abe71 sdhci: Advertise 2.0v supply on SDIO host controller
On Intel Edison the Broadcom Wi-Fi card, which is connected to SDIO,
requires 2.0v, while the host, according to Intel Merrifield TRM,
supports 1.8v supply only.

The card announces itself as

  mmc2: new ultra high speed DDR50 SDIO card at address 0001

Introduce a custom OCR mask for SDIO host controller on Intel Merrifield
and add a special case to sdhci_set_power_noreg() to override 2.0v supply
by enforcing 1.8v power choice.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-11 15:51:09 +01:00
Dan Carpenter
b8155d3ff3 mmc: tmio, renesas_sdhi: Remove unneeded NULL check
The inconsistent NULL checking in this function causes static checker
warnings.

    drivers/mmc/host/renesas_sdhi_sys_dmac.c:360 renesas_sdhi_sys_dmac_issue_tasklet_fn()
    error: we previously assumed 'host' could be null (see line 351)

On reviewing this code, "host" can't ever be NULL so we can just remove
the check.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-11 15:51:01 +01:00
Ard Biesheuvel
90e1d8ccdb mmc: sdhci_f_sdh30: add ACPI support
The Fujitsu SDH30 SDHCI controller may be described as a SCX0002 ACPI
device on ACPI platforms incorporating the Socionext SynQuacer SoC.

Given that mmc_of_parse() has already been made ACPI/DT agnostic,
making the SDH30 driver ACPI capable is actually rather simple:
all we need to do is make the call to sdhci_get_of_property() [which
does not set any properties we care about] and the clock handling
dependent on whether we are dealing with a DT device, and exposing
the ACPI id via the platform_driver struct and the module metadata.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-11 15:50:53 +01:00
Michael Trimarchi
3602785b34 mmc: sdhci-esdhc-imx: Enable/Disable mmc clock during runtime suspend
mmc clock can be stopped during runtime suspend and restart during runtime
resume if the sdio irq is not enabled. Stop sdio clock reduce EMI of
the device when the bus is not in use.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-09 09:21:49 +01:00
Michael Trimarchi
a0ad308758 mmc: sdhci-esdhc-imx: Changes the order of how clocks are being re-enabled
runtime_resume() should re-enable the clocks in reverse order comparing with
runtime_suspend()

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-09 09:21:18 +01:00
Michael Trimarchi
371d39fabc mmc: sdhci-esdhc-imx: Manage sdhci_runtime_suspend_host error code
We need to return in case of error even if the actual implementation
of sdhci_runtime_suspend_host always return 0. We don't want to
power down the clock and the assuption is that the sdhci_runtime_suspend_host
always let the system consistent in case of failure

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-09 09:20:59 +01:00
Atul Garg
d72d72cd33 mmc:host:sdhci-pci:Addition of Arasan PCI Controller with integrated phy.
The Arasan Controller is based on a FPGA platform and has integrated phy
with specific registers used during initialization and
management of different modes. The phy and the controller are integrated
and registers are very specific to Arasan.

Arasan being an IP provider, licenses these IPs to various companies for
integration of IP in custom SOCs. The custom SOCs define own register
map depending on how bits are tied inside the SOC for phy registers,
depending on SOC memory plan and hence will require own platform drivers.

If more details on phy registers are required, an interface document is
hosted at https://arasan.com/NF/eMMC5.1 PHY Programming in Linux.pdf.

Signed-off-by: Atul Garg <agarg@arasan.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-04 12:46:11 +01:00
Ulf Hansson
907a231705 Merge branch 'fixes' into next 2018-01-04 12:44:21 +01:00
Arnd Bergmann
2bd7b4aacd mmc: s3mci: mark debug_regs[] as static
The global array clashes with a newly added symbol of the same name:

drivers/staging/ccree/cc_debugfs.o:(.data+0x0): multiple definition of `debug_regs'
drivers/mmc/host/s3cmci.o:(.data+0x70): first defined here

We should fix both, this one addresses the s3cmci driver by removing
the symbol from the global namespace. While at it, this separates
the declaration from the type definition and makes the variable const.

Fixes: 9bdd203b4d ("s3cmci: add debugfs support for examining driver and hardware state")
Fixes: b3ec9a6736 ("staging: ccree: staging: ccree: replace sysfs by debugfs interface")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2018-01-04 12:42:31 +01:00
Wolfram Sang
d63da8c64b mmc: tmio: use io* accessors consistently
Because we started using io*_rep accessors previously because they are
more widely defined across architectures, let's be consistent and use
this family for all accessor wrappers.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-21 13:54:27 +01:00
Zhoujie Wu
8d876bf472 mmc: sdhci-xenon: wait 5ms after set 1.8V signal enable
According to SD spec 3.00 3.6.1 signal voltage switch
procedure step 6~8,
(6) Set 1.8V Signal Enable in the Host Control 2 register.
(7) Wait 5ms. 1.8V voltage regulator shall be stable within this period.
(8) If 1.8V Signal Enable is cleared by Host Controller, go to step (12).
Host should wait 5ms after set 1.8V signal enable bit in
Host Control 2 register and check if 1.8V is stable or not.

But current code checks this bit right after set it.
On some platforms with xenon controller found the bit is
cleared right away and host reports "1.8V regulator output
did not became stable" and 5ms delay can help.

Implement voltage_switch callback for xenon controller to add 5ms
delay to make sure the 1.8V signal enable bit is set by controller.

Signed-off-by: Zhoujie Wu <zjwu@marvell.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-19 08:53:04 +01:00
Masahiro Yamada
c4ba0e4abd mmc: tmio: change bus_shift to unsigned int
Sane values for bus_shift are:
   0 - for 16 bit bus
   1 - for 32 bit bus
   2 - for 64 bit bus

"unsigned long" is too much.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-19 08:50:04 +01:00
Masahiro Yamada
852d258f84 mmc: tmio,renesas_sdhi: move ssc_tappos to renesas_sdhi.h
struct tmio_mmc_host has "scc_tappos", but in fact, it is Renesas
private data.  Move it to renesas_sdhi.h

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-19 08:50:04 +01:00
Masahiro Yamada
90d9510645 mmc: tmio, renesas_sdhi: move Renesas-specific DMA data to renesas_sdhi.h
struct tmio_mmc_host has "dma_dataend" and "dma_complete", but in fact,
they are Renesas private data.  Move them to renesas_sdhi.h

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-19 08:50:04 +01:00
Masahiro Yamada
058db2868c mmc: tmio, renesas_sdhi: move struct tmio_mmc_dma to renesas_sdhi.h
struct tmio_mmc_dma looks like TMIO core data, but in fact, Renesas
private data.  Move it to renesas_sdhi.h (probably, it is better to
rename it to renesas_sdhi_dma, or squash it into struct renesas_sdhi).

I also moved struct renesas_sdhi and host_to_priv() to that header
because they are necessary to convert the tmio_mmc_host pointer into
the renesas_sdhi pointer.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-19 08:50:04 +01:00
Masahiro Yamada
2487e7efc9 mmc: renesas_sdhi: remove always false condition
renesas_sdhi_probe() always sets host->dma as follows:

        host->dma               = dma_priv;

!host->dma is always false.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-19 08:50:04 +01:00
Liu, Changcheng
0be55579a1 mmc: block: fix logical error to avoid memory leak
If the MMC_DRV_OP_GET_EXT_CSD request completes successfully, then
ext_csd must be freed, but in one case it was not. Fix that.

Signed-off-by: Liu Changcheng <changcheng.liu@intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 14:02:16 +01:00
Ulf Hansson
da3588b66e Merge branch 'fixes' into next 2017-12-18 13:57:04 +01:00
Daniel Drake
de8dcc3d2c mmc: avoid removing non-removable hosts during suspend
The Weibu F3C MiniPC has an onboard AP6255 module, presenting
two SDIO functions on a single MMC host (Bluetooth/btsdio and
WiFi/brcmfmac), and the mmc layer correctly detects this as
non-removable.

After suspend/resume, the wifi and bluetooth interfaces disappear
and do not get probed again.

The conditions here are:

 1. During suspend, we reach mmc_pm_notify()

 2. mmc_pm_notify() calls mmc_sdio_pre_suspend() to see if we can
    suspend the SDIO host. However, mmc_sdio_pre_suspend() returns
    -ENOSYS because btsdio_driver does not have a suspend method.

 3. mmc_pm_notify() proceeds to remove the card

 4. Upon resume, mmc_rescan() does nothing with this host, because of
    the rescan_entered check which aims to only scan a non-removable
    device a single time (i.e. during boot).

Fix the loss of functionality by detecting that we are unable to
suspend a non-removable host, so avoid the forced removal in that
case. The comment above this function already indicates that this
code was only intended for removable devices.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:59 +01:00
Pravin Shedge
b4fcb5e509 mmc: android-goldfish: remove duplicate includes
These duplicate includes have been found with scripts/checkincludes.pl but
they have been removed manually to avoid removing false positives.

Signed-off-by: Pravin Shedge <pravin.shedge4linux@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:59 +01:00
Masahiro Yamada
cd82cd213b mmc: tmio: move mmc_gpio_request_cd() before mmc_add_host()
Drivers do not need to call mmc_gpiod_request_cd_irq() explicitly
because mmc_start_host() calls it.  To make it work, cd_gpio must
be set before mmc_add_host().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:58 +01:00
Masahiro Yamada
2aaa3c5193 mmc: tmio, renesas_sdhi: set mmc_host_ops hooks directly
Drivers can set any mmc_host_ops hooks between tmio_mmc_host_alloc()
and tmio_mmc_host_probe().  Remove duplicated hooks in tmio_mmc_host.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:58 +01:00
Masahiro Yamada
c055fc75c1 mmc: tmio: move mmc_host_ops to struct tmio_mmc_host from static data
Currently, tmio_mmc_ops is static data and tmio_mmc_host_probe()
updates some hooks in the static data.  This is a problem when
two or more instances call tmio_mmc_host_probe() and each of them
requests to use its own card_busy/start_signal_voltage_switch.

We can borrow a solution from sdhci_alloc_host().  Copy the whole
ops structure to host->mmc_host_ops, then override the hooks in
malloc'ed data.  Constify tmio_mmc_ops since it is now a template
ops used by default.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:58 +01:00
Masahiro Yamada
4139696b79 mmc: tmio: use devm_ioremap_resource() instead of devm_ioremap()
The TMIO core misses to call request_mem_region().
devm_ioremap_resource() takes care of it and makes the code cleaner.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:57 +01:00
Masahiro Yamada
a3b05373e0 mmc: tmio: set tmio_mmc_host to driver data
The remove, suspend, resume hooks need to get tmio_mmc_host.  It is
tedious to call mmc_priv() to convert mmc_host to tmio_mmc_host.
We can directly set tmio_mmc_host to driver data.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:57 +01:00
Masahiro Yamada
4ce6281791 mmc: renesas_sdhi: remove eprobe jump label
"goto eprobe" does nothing.  Return directly.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:56 +01:00
Masahiro Yamada
e578afab6e mmc: renesas_sdhi: remove wrong depends on to enable compile test
ARCH_RENESAS is a stronger condition than (ARM || ARM64).
If ARCH_RENESAS is enabled, (ARM || ARM64) is met as well.

What is worse, the first depends on line prevents COMPILE_TEST from
enabling this driver.  It should be removed.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:56 +01:00
Wolfram Sang
0c36fc0dfb mmc: tmio: use ioread* for repeated access to a register
Not all archs define reads* and writes*. Switch to ioread*_rep and
friends which is defined everywhere, so we can enable COMPILE_TEST after
that.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-18 13:56:55 +01:00
Masaharu Hayakawa
967a6a07e9 mmc: renesas_sdhi: Add MODULE_LICENSE
The following error occurs when loading renesas_sdhi_core.c module,
so add MODULE_LICENSE("GPL v2").

 renesas_sdhi_core: module license 'unspecified' taints kernel.

Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
Fixes: 9d08428afb ("mmc: renesas-sdhi: make renesas_sdhi_sys_dmac main module file")
Cc: <stable@vger.kernel.org> # v4.13+
[Shimoda: Added Fixes tag and Cc to the stable ML]
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-15 09:44:33 +01:00
Masahiro Yamada
c813e10a6b mmc: renesas_sdhi: consolidate DMAC CONFIG options
The description in the Makefile is odd.  Fix the CONFIG selection
in a cleaner way.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-15 09:30:38 +01:00
Arvind Yadav
2408a08583 mmc: sunxi-mmc: Handle return value of platform_get_irq
platform_get_irq() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-15 09:13:16 +01:00
Arvind Yadav
682798a596 mmc: sdhci-spear: Handle return value of platform_get_irq
platform_get_irq() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-15 09:13:16 +01:00
Arvind Yadav
1b7ba57ecc mmc: sdhci-acpi: Handle return value of platform_get_irq
platform_get_irq() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-15 09:13:16 +01:00
Arvind Yadav
928635c114 mmc: s3cmci: Fix platform_get_irq's error checking
The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-15 09:13:16 +01:00
Arvind Yadav
cbcaac6d7d mmc: meson-gx-mmc: Fix platform_get_irq's error checking
The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-15 09:13:16 +01:00
Ulf Hansson
e828b53afd Merge branch 'fixes' into next 2017-12-11 13:56:08 +01:00
Christoph Fritz
91516a2a47 mmc: core: apply NO_CMD23 quirk to some specific cards
To get an usdhc Apacer and some ATP SD cards work reliable, CMD23 needs
to be disabled.  This has been tested on i.MX6 (sdhci-esdhc) and rk3288
(dw_mmc-rockchip).

Without this patch on i.MX6 (sdhci-esdhc):

 $ dd if=/dev/urandom of=/mnt/test bs=1M count=10 conv=fsync

    | <mmc0: starting CMD23 arg 00000400 flags 00000015>
    | mmc0: starting CMD25 arg 00a71f00 flags 000000b5
    | mmc0:     blksz 512 blocks 1024 flags 00000100 tsac 3000 ms nsac 0
    | mmc0:     CMD12 arg 00000000 flags 0000049d
    | sdhci [sdhci_irq()]: *** mmc0 got interrupt: 0x00000001
    | mmc0: Timeout waiting for hardware interrupt.

Without this patch on rk3288 (dw_mmc-rockchip):

    | mmc1: Card stuck in programming state! mmcblk1 card_busy_detect
    | dwmmc_rockchip ff0c0000.dwmmc: Busy; trying anyway
    | mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz,
    | actual 400000HZ div = 0)
    | mmc1: card never left busy state
    | mmc1: tried to reset card, got error -110
    | blk_update_request: I/O error, dev mmcblk1, sector 139778
    | Buffer I/O error on dev mmcblk1p1, logical block 131586, lost async
    | page write

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Cc: <stable@vger.kernel.org> # v4.14+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 13:43:27 +01:00
Ulf Hansson
8726059a67 Merge branch 'fixes' into next 2017-12-11 13:19:35 +01:00
Adrian Hunter
0acccf4141 mmc: sdhci-acpi: Avoid broken UHS transfer modes on Intel CHT
Intel DSM function 8 has been used to identify transfer modes that are not
working on some CHT boards. Add support for that.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 13:16:12 +01:00
Adrian Hunter
0cc1a0f451 mmc: sdhci-acpi: Add setup_host() callback
Add a ->setup_host() callback so that device-specific changes can be made
to the mmc host controller before it is added.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 13:15:57 +01:00
Dan Carpenter
2361bfb055 mmc: block: blk-mq: Potential NULL deref on mmc_blk_alloc_req() failure
mmc_blk_alloc_req() is supposed to return error pointers but there is
one path where we forget to set the error code and accidentally return
NULL.  The callers are not expecting that and will have a NULL pointer
dereference.

Fixes: 41e3efd07d ("mmc: block: Simplify cleaning up the queue")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 13:13:38 +01:00
Adrian Hunter
0562315b86 mmc: cqhci: Ensure macro parameters are wrapped in parentheses
Absence of parentheses is not affecting current code, but ensure macro
parameters are wrapped in parentheses.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: a4080225f5 ("mmc: cqhci: support for command queue enabled host")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 13:11:21 +01:00
Adrian Hunter
126b627003 mmc: core: Remove code no longer needed after the switch to blk-mq
Remove code no longer needed after the switch to blk-mq.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 13:05:58 +01:00
Adrian Hunter
0fbfd12518 mmc: block: Remove code no longer needed after the switch to blk-mq
Remove code no longer needed after the switch to blk-mq.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 13:02:22 +01:00
Adrian Hunter
1bec43a3b1 mmc: core: Remove option not to use blk-mq
Remove config option MMC_MQ_DEFAULT and parameter mmc_use_blk_mq, so that
blk-mq must be used always.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:55:02 +01:00
yinbo.zhu
f2bc600008 mmc: sdhci-of-esdhc: fix the mmc error after sleep on ls1046ardb
When system wakes up from sleep on ls1046ardb, the SD operation fails
with mmc error messages since ESDHC_TB_EN bit couldn't be cleaned by
eSDHC_SYSCTL[RSTA]. It's proper to clean this bit in esdhc_reset()
rather than in probe.

Signed-off-by: yinbo.zhu <yinbo.zhu@nxp.com>
Acked-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:53:06 +01:00
Adrian Hunter
23a185254a mmc: mmc_test: Ensure command queue is disabled for testing
mmc_test disables the command queue because none of the tests use the
command queue. However the Reset Test will re-enable it, so disable it in
that case too.

Fixes: 9d4579a85c ("mmc: mmc_test: Disable Command Queue while mmc_test is used")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:51:29 +01:00
Adrian Hunter
d2383318c5 mmc: core: Ensure cmd_completion is initialized
mmc_test now uses mmc_start_request() to test sending commands during
"ongoing" asynchronous transfers, i.e. tests:
	Commands during non-blocking read - use Set Block Count (CMD23)
	Commands during non-blocking write - use Set Block Count (CMD23)

mmc_start_request() was not initializing cmd_completion, but cmd_completion
is used by "ongoing" transfers, so move initialization of cmd_completion
into making mmc_start_request().

Fixes: cb39f61e9b ("mmc: core: Export a few functions needed for blkmq support")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:48:07 +01:00
Shah Nehal-Bakulchandra
34597a3f60 mmc: sdhci-acpi: Add support for ACPI HID of AMD Controller with HS400
This patch supports HS400 for AMD upcoming emmc 5.0 controller.The
HS400 and HS200 mode requires hardware work around also. This patch
adds the quirks for the same.

Signed-off-by: Nehal-bakulchandra Shah <Nehal-bakulchandra.Shah@amd.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:48:07 +01:00
Arnd Bergmann
a5b97be2a7 mmc_test: use ktime_get_ts64 for timestamps
Calling getnstimeofday() can suffer from time jumps and from the
y2038 overflow, so it is not appropriate here. Using ktime_get_ts64()
solves both problems. Using ktime_get() with ktime_t timestamps would
also work, but it seems that we mainly want to print the times as
seconds+nanoseconds, so it would require an extra division in the output.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:48:06 +01:00
Milan Stevanovic
043f2dca36 mmc: sdhci-of-arasan: Add sdhci_arasan_set_power
The power register needs to have a valid voltage set
even when the power supply is managed by  an external regulator.

Signed-off-by: Milan Stevanovic <milan.o.stevanovic@gmail.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:48:06 +01:00
Ulrich Hecht
c14e60963e mmc: renesas_sdhi: enable R-Car D3 (r8a77995) support
Whitelists for internal DMAC implementation.

Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
2017-12-11 12:48:06 +01:00
Colin Ian King
15ff2946b3 mmc: block: make function mmc_cqe_issue_type static
The function mmc_cqe_issue_type is local to the source and does
not need to be in global scope, so make it static.

Cleans up sparse warning:
drivers/mmc/core/queue.c:62:21: warning: symbol 'mmc_cqe_issue_type'
was not declared. Should it be static?

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:48:05 +01:00
Wu Fengguang
aa95014445 mmc: block: blk-mq: fix boolreturn.cocci warnings
drivers/mmc/core/block.c:2106:9-10: WARNING: return of 0/1 in function 'mmc_blk_status_error' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci

Fixes:7eb43d537166 ("mmc: block: blk-mq: Stop using legacy recovery")
CC: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:47:25 +01:00
Adrian Hunter
42f532da3a mmc: mmc_test: Do not use mmc_start_areq() anymore
The block driver's blk-mq paths do not use mmc_start_areq(). In order to
remove mmc_start_areq() entirely, start by removing it from mmc_test.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:39 +01:00
Adrian Hunter
7eb43d5371 mmc: block: blk-mq: Stop using legacy recovery
There are only a few things the recovery needs to do. Primarily, it just
needs to:
	Determine the number of bytes transferred
	Get the card back to transfer state
	Determine whether to retry

There are also a couple of additional features:
	Reset the card before the last retry
	Read one sector at a time

The legacy code spent much effort analyzing command errors, but commands
fail fast, so it is simpler just to give all command errors the same number
of retries.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:39 +01:00
Adrian Hunter
6b7a363d2c mmc: block: Reduce polling timeout from 10 minutes to 10 seconds
Set a 10 second timeout for polling write request busy state. Note, mmc
core is setting a 3 second timeout for SD cards, and SDHCI has long had a
10 second software timer to timeout the whole request, so 10 seconds should
be ample.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:38 +01:00
Adrian Hunter
92c0a0cc94 mmc: block: Add timeout_clks when calculating timeout
According to the specification, total access time is derived from both TAAC
and NSAC, which means the timeout should add both timeout_ns and
timeout_clks. Host drivers do that, so make the block driver do that too.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:38 +01:00
Adrian Hunter
0987c6b046 mmc: block: Check for transfer state in card_busy_detect()
The card is required to return to transfer state. Since that is the state
required to start another transfer, check for that state instead of
programming state.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:38 +01:00
Adrian Hunter
7701885e56 mmc: block: Check the timeout correctly in card_busy_detect()
Pedantically, ensure the status is checked for the last time after the full
timeout has passed.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:37 +01:00
Adrian Hunter
f47a1fe346 mmc: block: blk-mq: Check error bits and save the exception bit when polling card busy
Check error bits and save the exception bit when polling card busy.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:36 +01:00
Adrian Hunter
c89b4851c6 mmc: block: Make card_busy_detect() accumulate all response error bits
Make card_busy_detect() accumulate all response error bits. Later patches
will make use of this.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:36 +01:00
Adrian Hunter
88a516461e mmc: block: blk-mq: Separate card polling from recovery
Recovery is simpler to understand if it is only used for errors. Create a
separate function for card polling.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:35 +01:00
Adrian Hunter
10f21df4a2 mmc: block: blk-mq: Add support for direct completion
For blk-mq, add support for completing requests directly in the ->done
callback. That means that error handling and urgent background operations
must be handled by recovery_work in that case.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:35 +01:00
Adrian Hunter
8ee82bda23 mmc: sdhci-pci: Add CQHCI support for Intel GLK
Add CQHCI initialization and implement CQHCI operations for Intel GLK.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:35 +01:00
Venkat Gopalakrishnan
a4080225f5 mmc: cqhci: support for command queue enabled host
This patch adds CMDQ support for command-queue compatible
hosts.

Command queue is added in eMMC-5.1 specification. This
enables the controller to process upto 32 requests at
a time.

Adrian Hunter contributed renaming to cqhci, recovery, suspend
and resume, cqhci_off, cqhci_wait_for_idle, and external timeout
handling.

Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:34 +01:00
Adrian Hunter
1e8e55b670 mmc: block: Add CQE support
Add CQE support to the block driver, including:
    - optionally using DCMD for flush requests
    - "manually" issuing discard requests
    - issuing read / write requests to the CQE
    - supporting block-layer timeouts
    - handling recovery
    - supporting re-tuning

CQE offers 25% - 50% better random multi-threaded I/O.  There is a slight
(e.g. 2%) drop in sequential read speed but no observable change to sequential
write.

CQE automatically sends the commands to complete requests.  However it only
supports reads / writes and so-called "direct commands" (DCMD).  Furthermore
DCMD is limited to one command at a time, but discards require 3 commands.
That makes issuing discards through CQE very awkward, but some CQE's don't
support DCMD anyway.  So for discards, the existing non-CQE approach is
taken, where the mmc core code issues the 3 commands one at a time i.e.
mmc_erase(). Where DCMD is used, is for issuing flushes.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:34 +01:00
Adrian Hunter
81196976ed mmc: block: Add blk-mq support
Define and use a blk-mq queue. Discards and flushes are processed
synchronously, but reads and writes asynchronously. In order to support
slow DMA unmapping, DMA unmapping is not done until after the next request
is started. That means the request is not completed until then. If there is
no next request then the completion is done by queued work.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:33 +01:00
Adrian Hunter
c3d53d0da6 mmc: core: Add parameter use_blk_mq
Until mmc has blk-mq support fully implemented and tested, add a parameter
use_blk_mq, set to true if config option MMC_MQ_DEFAULT is selected, which
it is by default.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:33 +01:00
Adrian Hunter
6d3898a6a5 mmc: block: Add error-handling comments
Add error-handling comments to explain what would also be done for blk-mq
if it used the legacy error-handling.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:32 +01:00
Adrian Hunter
afab1bb8b4 mmc: core: Make mmc_pre_req() and mmc_post_req() available
Make mmc_pre_req() and mmc_post_req() available to the card drivers. Later
patches will make use of this.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:32 +01:00
Adrian Hunter
41e3efd07d mmc: block: Simplify cleaning up the queue
Use blk_cleanup_queue() to shutdown the queue when the driver is removed,
and instead get an extra reference to the queue to prevent the queue being
freed before the final mmc_blk_put().

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:31 +01:00
Adrian Hunter
4512bd370b mmc: block: No need to export mmc_cleanup_queue()
mmc_cleanup_queue() is not used by a different module. Do not export it.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
2017-12-11 12:44:31 +01:00
Adam Borowski
1907e38680 mmc: sunxi: fix mojibake in module metadata
It had an U+FFFD: not a corrupted character but a literal well-formed
replacement marker.

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:44:30 +01:00
Wolfram Sang
754febcc6b mmc: tmio: use usleep_range consistently
There are a few udelay() left which are in a range that they should be
usleep_range() these days.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:44:29 +01:00
Wolfram Sang
96455380ec mmc: core: use usleep_range rather than HZ magic in mmc_delay()
Documentation/timers/timers-howto.txt recommends to use usleep_range for
delays 1-20ms. Let's adhere to it. No need for messing with HZ and still
do busy looping these days.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:44:29 +01:00
yinbo.zhu
97618aca14 mmc: sdhci-of-esdhc: fix eMMC couldn't work after kexec
The bit eSDHC_TBCTL[TB_EN] couldn't be reset by eSDHC_SYSCTL[RSTA] which is
used to reset for all. The driver should make sure it's cleared before card
initialization, otherwise the initialization would fail.

Signed-off-by: yinbo.zhu <yinbo.zhu@nxp.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:44:28 +01:00
Masahiro Yamada
5f3a86014e mmc: slot-gpio: call gpiod_to_irq() only when MMC_CAP_NEEDS_POLL is unset
It is not efficient to call gpiod_to_irq() regardless the flag, then
ignore the returned irq if MMC_CAP_NEEDS_POLL.

Move gpiod_to_irq() after the MMC_CAP_NEEDS_POLL check.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-11 12:44:28 +01:00
Wolfram Sang
be17f1ce85 mmc: core: properly init drv_type
When the latest version of parsing the new eMMC bindings was moved from
core.c to mmc.c, it was overlooked that drv_type could be used
uninitialized. Fix it!

Fixes: 6186d06c51 ("mmc: parse new binding for eMMC fixed driver type")
Reported-by: Colin Ian King <colin.king@canonical.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-12-05 17:14:00 +01:00
Linus Torvalds
3c1c4ddffb MMC core:
- Ensure that debugfs files are removed properly
  - Fix missing blk_put_request()
  - Deal with errors from blk_get_request()
  - Rewind mmc bus suspend operations at failures
  - Prepend '0x' to ocr and pre_eol_info in sysfs to identify as hex
 
 MMC host:
  - sdhci-msm: Make it optional to wait for signal level changes
  - sdhci: Avoid swiotlb buffer being full
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Merge tag 'mmc-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Ensure that debugfs files are removed properly
   - Fix missing blk_put_request()
   - Deal with errors from blk_get_request()
   - Rewind mmc bus suspend operations at failures
   - Prepend '0x' to ocr and pre_eol_info in sysfs to identify as hex

  MMC host:
   - sdhci-msm: Make it optional to wait for signal level changes
   - sdhci: Avoid swiotlb buffer being full"

* tag 'mmc-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: core: prepend 0x to OCR entry in sysfs
  mmc: core: prepend 0x to pre_eol_info entry in sysfs
  mmc: sdhci: Avoid swiotlb buffer being full
  mmc: sdhci-msm: Optionally wait for signal level changes
  mmc: block: Ensure that debugfs files are removed
  mmc: core: Do not leave the block driver in a suspended state
  mmc: block: Check return value of blk_get_request()
  mmc: block: Fix missing blk_put_request()
2017-12-01 08:14:22 -05:00
Rui Feng
e455b69ddf misc: rtsx: Move Realtek Card Reader Driver to misc
Because Realtek card reader drivers are pcie and usb drivers,
and they bridge mmc subsystem and memstick subsystem, they are
not mfd drivers. Greg and Lee Jones had a discussion about
where to put the drivers, the result is that misc is a good
place for them, so I move all files to misc. If I don't move
them to a right place, I can't add any patch for this driver.

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Tested-by: Perry Yuan <perry_yuan@dell.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2017-11-29 10:16:44 +00:00
Bastian Stender
c892b0d817 mmc: core: prepend 0x to OCR entry in sysfs
The sysfs entry "ocr" was missing the 0x prefix to identify it as hex
formatted.

Fixes: 5fb06af7a3 ("mmc: core: Extend sysfs with OCR register")
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Cc: <stable@vger.kernel.org> # v4.8+
[Ulf: Amended change to also cover SD-cards]
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-29 10:46:53 +01:00
Bastian Stender
80a780a167 mmc: core: prepend 0x to pre_eol_info entry in sysfs
The sysfs entry "pre_eol_info" was missing the 0x prefix to identify it
as hex formatted.

Fixes: 46bc5c408e ("mmc: core: Export device lifetime information through sysfs")
Signed-off-by: Bastian Stender <bst@pengutronix.de>
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-29 10:46:47 +01:00
Ulf Hansson
250dcd1146 mmc: sdhci: Avoid swiotlb buffer being full
The commit de3ee99b09 ("mmc: Delete bounce buffer handling") deletes the
bounce buffer handling, but also causes the max_req_size for sdhci to be
increased, in case when max_segs == 1. This causes errors for sdhci-pci
Ricoh variant, about the swiotlb buffer to become full.

Fix the issue, by taking IO_TLB_SEGSIZE and IO_TLB_SHIFT into account when
deciding the max_req_size for sdhci.

Reported-by: Jiri Slaby <jslaby@suse.cz>
Fixes: de3ee99b09 ("mmc: Delete bounce buffer handling")
Cc: <stable@vger.kernel.org> # v4.14+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
2017-11-28 20:29:24 +01:00
Bjorn Andersson
52884f8f66 mmc: sdhci-msm: Optionally wait for signal level changes
Not all instances of the SDCC core supports changing signal voltage and
as such will not generate a power interrupt when the software attempts
to change the voltage. This results in probing the eMMC on some devices
to take over 2 minutes.

Check that the SWITCHABLE_SIGNALING_VOLTAGE bit in MCI_GENERICS is set
before waiting for the power interrupt.

Cc: Sahitya Tummala <stummala@codeaurora.org>
Cc: Vijay Viswanath <vviswana@codeaurora.org>
Fixes: c0309b3803 ("mmc: sdhci-msm: Add sdhci msm register write APIs which wait for pwr irq")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-23 14:39:26 +01:00
Adrian Hunter
f9f0da9881 mmc: block: Ensure that debugfs files are removed
The card is not necessarily being removed, but the debugfs files must be
removed when the driver is removed, otherwise they will continue to exist
after unbinding the card from the driver. e.g.

  # echo "mmc1:0001" > /sys/bus/mmc/drivers/mmcblk/unbind
  # cat /sys/kernel/debug/mmc1/mmc1\:0001/ext_csd
  [  173.634584] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
  [  173.643356] IP: mmc_ext_csd_open+0x5e/0x170

A complication is that the debugfs_root may have already been removed, so
check for that too.

Fixes: 627c3ccfb4 ("mmc: debugfs: Move block debugfs into block module")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org # 4.14+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-23 14:39:13 +01:00
Adrian Hunter
ebe7dd45cf mmc: core: Do not leave the block driver in a suspended state
The block driver must be resumed if the mmc bus fails to suspend the card.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org # v3.19+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-23 14:09:21 +01:00
Adrian Hunter
fb8e456e54 mmc: block: Check return value of blk_get_request()
blk_get_request() can fail, always check the return value.

Fixes: 0493f6fe5b ("mmc: block: Move boot partition locking into a driver op")
Fixes: 3ecd8cf23f ("mmc: block: move multi-ioctl() to use block layer")
Fixes: 614f0388f5 ("mmc: block: move single ioctl() commands to block requests")
Fixes: 627c3ccfb4 ("mmc: debugfs: Move block debugfs into block module")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org # 4.13+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-23 14:03:51 +01:00
Adrian Hunter
34c089e806 mmc: block: Fix missing blk_put_request()
Ensure blk_get_request() is paired with blk_put_request().

Fixes: 0493f6fe5b ("mmc: block: Move boot partition locking into a driver op")
Fixes: 627c3ccfb4 ("mmc: debugfs: Move block debugfs into block module")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org # 4.13+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-23 14:00:33 +01:00
Kees Cook
e99e88a9d2 treewide: setup_timer() -> timer_setup()
This converts all remaining cases of the old setup_timer() API into using
timer_setup(), where the callback argument is the structure already
holding the struct timer_list. These should have no behavioral changes,
since they just change which pointer is passed into the callback with
the same available pointers after conversion. It handles the following
examples, in addition to some other variations.

Casting from unsigned long:

    void my_callback(unsigned long data)
    {
        struct something *ptr = (struct something *)data;
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, ptr);

and forced object casts:

    void my_callback(struct something *ptr)
    {
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, (unsigned long)ptr);

become:

    void my_callback(struct timer_list *t)
    {
        struct something *ptr = from_timer(ptr, t, my_timer);
    ...
    }
    ...
    timer_setup(&ptr->my_timer, my_callback, 0);

Direct function assignments:

    void my_callback(unsigned long data)
    {
        struct something *ptr = (struct something *)data;
    ...
    }
    ...
    ptr->my_timer.function = my_callback;

have a temporary cast added, along with converting the args:

    void my_callback(struct timer_list *t)
    {
        struct something *ptr = from_timer(ptr, t, my_timer);
    ...
    }
    ...
    ptr->my_timer.function = (TIMER_FUNC_TYPE)my_callback;

And finally, callbacks without a data assignment:

    void my_callback(unsigned long data)
    {
    ...
    }
    ...
    setup_timer(&ptr->my_timer, my_callback, 0);

have their argument renamed to verify they're unused during conversion:

    void my_callback(struct timer_list *unused)
    {
    ...
    }
    ...
    timer_setup(&ptr->my_timer, my_callback, 0);

The conversion is done with the following Coccinelle script:

spatch --very-quiet --all-includes --include-headers \
	-I ./arch/x86/include -I ./arch/x86/include/generated \
	-I ./include -I ./arch/x86/include/uapi \
	-I ./arch/x86/include/generated/uapi -I ./include/uapi \
	-I ./include/generated/uapi --include ./include/linux/kconfig.h \
	--dir . \
	--cocci-file ~/src/data/timer_setup.cocci

@fix_address_of@
expression e;
@@

 setup_timer(
-&(e)
+&e
 , ...)

// Update any raw setup_timer() usages that have a NULL callback, but
// would otherwise match change_timer_function_usage, since the latter
// will update all function assignments done in the face of a NULL
// function initialization in setup_timer().
@change_timer_function_usage_NULL@
expression _E;
identifier _timer;
type _cast_data;
@@

(
-setup_timer(&_E->_timer, NULL, _E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E->_timer, NULL, (_cast_data)_E);
+timer_setup(&_E->_timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, &_E);
+timer_setup(&_E._timer, NULL, 0);
|
-setup_timer(&_E._timer, NULL, (_cast_data)&_E);
+timer_setup(&_E._timer, NULL, 0);
)

@change_timer_function_usage@
expression _E;
identifier _timer;
struct timer_list _stl;
identifier _callback;
type _cast_func, _cast_data;
@@

(
-setup_timer(&_E->_timer, _callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, &_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, _E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, &_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)_E);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, (_cast_func)&_callback, (_cast_data)&_E);
+timer_setup(&_E._timer, _callback, 0);
|
 _E->_timer@_stl.function = _callback;
|
 _E->_timer@_stl.function = &_callback;
|
 _E->_timer@_stl.function = (_cast_func)_callback;
|
 _E->_timer@_stl.function = (_cast_func)&_callback;
|
 _E._timer@_stl.function = _callback;
|
 _E._timer@_stl.function = &_callback;
|
 _E._timer@_stl.function = (_cast_func)_callback;
|
 _E._timer@_stl.function = (_cast_func)&_callback;
)

// callback(unsigned long arg)
@change_callback_handle_cast
 depends on change_timer_function_usage@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
identifier _handle;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *t
 )
 {
(
	... when != _origarg
	_handletype *_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle;
	... when != _handle
	_handle =
-(_handletype *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
|
	... when != _origarg
	_handletype *_handle;
	... when != _handle
	_handle =
-(void *)_origarg;
+from_timer(_handle, t, _timer);
	... when != _origarg
)
 }

// callback(unsigned long arg) without existing variable
@change_callback_handle_cast_no_arg
 depends on change_timer_function_usage &&
                     !change_callback_handle_cast@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _origtype;
identifier _origarg;
type _handletype;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *t
 )
 {
+	_handletype *_origarg = from_timer(_origarg, t, _timer);
+
	... when != _origarg
-	(_handletype *)_origarg
+	_origarg
	... when != _origarg
 }

// Avoid already converted callbacks.
@match_callback_converted
 depends on change_timer_function_usage &&
            !change_callback_handle_cast &&
	    !change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier t;
@@

 void _callback(struct timer_list *t)
 { ... }

// callback(struct something *handle)
@change_callback_handle_arg
 depends on change_timer_function_usage &&
	    !match_callback_converted &&
            !change_callback_handle_cast &&
            !change_callback_handle_cast_no_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
@@

 void _callback(
-_handletype *_handle
+struct timer_list *t
 )
 {
+	_handletype *_handle = from_timer(_handle, t, _timer);
	...
 }

// If change_callback_handle_arg ran on an empty function, remove
// the added handler.
@unchange_callback_handle_arg
 depends on change_timer_function_usage &&
	    change_callback_handle_arg@
identifier change_timer_function_usage._callback;
identifier change_timer_function_usage._timer;
type _handletype;
identifier _handle;
identifier t;
@@

 void _callback(struct timer_list *t)
 {
-	_handletype *_handle = from_timer(_handle, t, _timer);
 }

// We only want to refactor the setup_timer() data argument if we've found
// the matching callback. This undoes changes in change_timer_function_usage.
@unchange_timer_function_usage
 depends on change_timer_function_usage &&
            !change_callback_handle_cast &&
            !change_callback_handle_cast_no_arg &&
	    !change_callback_handle_arg@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type change_timer_function_usage._cast_data;
@@

(
-timer_setup(&_E->_timer, _callback, 0);
+setup_timer(&_E->_timer, _callback, (_cast_data)_E);
|
-timer_setup(&_E._timer, _callback, 0);
+setup_timer(&_E._timer, _callback, (_cast_data)&_E);
)

// If we fixed a callback from a .function assignment, fix the
// assignment cast now.
@change_timer_function_assignment
 depends on change_timer_function_usage &&
            (change_callback_handle_cast ||
             change_callback_handle_cast_no_arg ||
             change_callback_handle_arg)@
expression change_timer_function_usage._E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_func;
typedef TIMER_FUNC_TYPE;
@@

(
 _E->_timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-(_cast_func)_callback;
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E->_timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-&_callback;
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-(_cast_func)_callback
+(TIMER_FUNC_TYPE)_callback
 ;
|
 _E._timer.function =
-(_cast_func)&_callback
+(TIMER_FUNC_TYPE)_callback
 ;
)

// Sometimes timer functions are called directly. Replace matched args.
@change_timer_function_calls
 depends on change_timer_function_usage &&
            (change_callback_handle_cast ||
             change_callback_handle_cast_no_arg ||
             change_callback_handle_arg)@
expression _E;
identifier change_timer_function_usage._timer;
identifier change_timer_function_usage._callback;
type _cast_data;
@@

 _callback(
(
-(_cast_data)_E
+&_E->_timer
|
-(_cast_data)&_E
+&_E._timer
|
-_E
+&_E->_timer
)
 )

// If a timer has been configured without a data argument, it can be
// converted without regard to the callback argument, since it is unused.
@match_timer_function_unused_data@
expression _E;
identifier _timer;
identifier _callback;
@@

(
-setup_timer(&_E->_timer, _callback, 0);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0L);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E->_timer, _callback, 0UL);
+timer_setup(&_E->_timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0L);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_E._timer, _callback, 0UL);
+timer_setup(&_E._timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0L);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(&_timer, _callback, 0UL);
+timer_setup(&_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0L);
+timer_setup(_timer, _callback, 0);
|
-setup_timer(_timer, _callback, 0UL);
+timer_setup(_timer, _callback, 0);
)

@change_callback_unused_data
 depends on match_timer_function_unused_data@
identifier match_timer_function_unused_data._callback;
type _origtype;
identifier _origarg;
@@

 void _callback(
-_origtype _origarg
+struct timer_list *unused
 )
 {
	... when != _origarg
 }

Signed-off-by: Kees Cook <keescook@chromium.org>
2017-11-21 15:57:07 -08:00
Linus Torvalds
dee02770cd MMC core:
- Introduce host claiming by context to support blkmq
  - Preparations for enabling CQE (eMMC CMDQ) requests
  - Re-factorizations to prepare for blkmq support
  - Re-factorizations to prepare for CQE support
  - Fix signal voltage switch for SD cards without power cycle
  - Convert RPMB to a character device
  - Export eMMC revision via sysfs
  - Support eMMC DT binding for fixed driver type
  - Document mmc_regulator_get_supply() API
 
 MMC host:
  - omap_hsmmc: Updated regulator management for PBIAS
  - sdhci-omap: Add new OMAP SDHCI driver
  - meson-mx-sdio: New driver for the Amlogic Meson8 and Meson8b SoCs
  - sdhci-pci: Add support for Intel CDF
  - sdhci-acpi: Fix voltage switch for some Intel host controllers
  - sdhci-msm: Enable delay circuit calibration clocks
  - sdhci-msm: Manage power IRQ properly
  - mediatek: Add support of mt2701/mt2712
  - mediatek: Updates management of clocks and tunings
  - mediatek: Upgrade eMMC HS400 support
  - rtsx_pci: Update tuning for gen3 PCI-Express
  - renesas_sdhi: Support R-Car Gen[123] fallback compatibility strings
  - Catch all errors when getting regulators
  - Various additional improvements and cleanups
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Merge tag 'mmc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Introduce host claiming by context to support blkmq
   - Preparations for enabling CQE (eMMC CMDQ) requests
   - Re-factorizations to prepare for blkmq support
   - Re-factorizations to prepare for CQE support
   - Fix signal voltage switch for SD cards without power cycle
   - Convert RPMB to a character device
   - Export eMMC revision via sysfs
   - Support eMMC DT binding for fixed driver type
   - Document mmc_regulator_get_supply() API

 MMC host:
   - omap_hsmmc: Updated regulator management for PBIAS
   - sdhci-omap: Add new OMAP SDHCI driver
   - meson-mx-sdio: New driver for the Amlogic Meson8 and Meson8b SoCs
   - sdhci-pci: Add support for Intel CDF
   - sdhci-acpi: Fix voltage switch for some Intel host controllers
   - sdhci-msm: Enable delay circuit calibration clocks
   - sdhci-msm: Manage power IRQ properly
   - mediatek: Add support of mt2701/mt2712
   - mediatek: Updates management of clocks and tunings
   - mediatek: Upgrade eMMC HS400 support
   - rtsx_pci: Update tuning for gen3 PCI-Express
   - renesas_sdhi: Support R-Car Gen[123] fallback compatibility strings
   - Catch all errors when getting regulators
   - Various additional improvements and cleanups"

* tag 'mmc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (91 commits)
  sdhci-fujitsu: add support for setting the CMD_DAT_DELAY attribute
  dt-bindings: sdhci-fujitsu: document cmd-dat-delay property
  mmc: tmio: Replace msleep() of 20ms or less with usleep_range()
  mmc: dw_mmc: Convert timers to use timer_setup()
  mmc: dw_mmc: Cleanup the DTO timer like the CTO one
  mmc: vub300: Use common code in __download_offload_pseudocode()
  mmc: tmio: Use common error handling code in tmio_mmc_host_probe()
  mmc: Convert timers to use timer_setup()
  mmc: sdhci-acpi: Fix voltage switch for some Intel host controllers
  mmc: sdhci-acpi: Let devices define their own private data
  mmc: mediatek: perfer to use rise edge latching for cmd line
  mmc: mediatek: improve eMMC hs400 mode read performance
  mmc: mediatek: add latch-ck support
  mmc: mediatek: add support of source_cg clock
  mmc: mediatek: add stop_clk fix and enhance_rx support
  mmc: mediatek: add busy_check support
  mmc: mediatek: add async fifo and data tune support
  mmc: mediatek: add pad_tune0 support
  mmc: mediatek: make hs400_tune_response only for mt8173
  arm64: dts: mt8173: remove "mediatek, mt8135-mmc" from mmc nodes
  ...
2017-11-13 10:17:35 -08:00
Ard Biesheuvel
06641e8dea sdhci-fujitsu: add support for setting the CMD_DAT_DELAY attribute
The Socionext SynQuacer SoC inherits this IP from Fujitsu, but
requires the F_SDH30_CMD_DAT_DELAY bit to be set in the
F_SDH30_ESD_CONTROL control register. So set this bit if the
DT node has the 'fujitsu,cmd-dat-delay-select' property.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-07 13:43:23 +01:00
Masaharu Hayakawa
1f27ddf0b5 mmc: tmio: Replace msleep() of 20ms or less with usleep_range()
As documented in Documentation/timers/timers-howto.txt
as follows, replace msleep() with usleep_range().

msleep(1~20) may not do what the caller intends, and
will often sleep longer (~20 ms actual sleep for any
value given in the 1~20ms range). In many cases this
is not the desired behavior.

Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-07 13:42:53 +01:00
Linus Torvalds
3f46540ee7 MMC host:
- dw_mmc: Fix request timeout issues
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Merge tag 'mmc-v4.14-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "Fix dw_mmc request timeout issues"

* tag 'mmc-v4.14-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: dw_mmc: Fix the DTO timeout calculation
  mmc: dw_mmc: Add locking to the CTO timer
  mmc: dw_mmc: Fix the CTO timeout calculation
  mmc: dw_mmc: cancel the CTO timer after a voltage switch
2017-11-03 09:19:20 -07:00
Linus Torvalds
ead751507d License cleanup: add SPDX license identifiers to some files
Many source files in the tree are missing licensing information, which
 makes it harder for compliance tools to determine the correct license.
 
 By default all files without license information are under the default
 license of the kernel, which is GPL version 2.
 
 Update the files which contain no license information with the 'GPL-2.0'
 SPDX license identifier.  The SPDX identifier is a legally binding
 shorthand, which can be used instead of the full boiler plate text.
 
 This patch is based on work done by Thomas Gleixner and Kate Stewart and
 Philippe Ombredanne.
 
 How this work was done:
 
 Patches were generated and checked against linux-4.14-rc6 for a subset of
 the use cases:
  - file had no licensing information it it.
  - file was a */uapi/* one with no licensing information in it,
  - file was a */uapi/* one with existing licensing information,
 
 Further patches will be generated in subsequent months to fix up cases
 where non-standard license headers were used, and references to license
 had to be inferred by heuristics based on keywords.
 
 The analysis to determine which SPDX License Identifier to be applied to
 a file was done in a spreadsheet of side by side results from of the
 output of two independent scanners (ScanCode & Windriver) producing SPDX
 tag:value files created by Philippe Ombredanne.  Philippe prepared the
 base worksheet, and did an initial spot review of a few 1000 files.
 
 The 4.13 kernel was the starting point of the analysis with 60,537 files
 assessed.  Kate Stewart did a file by file comparison of the scanner
 results in the spreadsheet to determine which SPDX license identifier(s)
 to be applied to the file. She confirmed any determination that was not
 immediately clear with lawyers working with the Linux Foundation.
 
 Criteria used to select files for SPDX license identifier tagging was:
  - Files considered eligible had to be source code files.
  - Make and config files were included as candidates if they contained >5
    lines of source
  - File already had some variant of a license header in it (even if <5
    lines).
 
 All documentation files were explicitly excluded.
 
 The following heuristics were used to determine which SPDX license
 identifiers to apply.
 
  - when both scanners couldn't find any license traces, file was
    considered to have no license information in it, and the top level
    COPYING file license applied.
 
    For non */uapi/* files that summary was:
 
    SPDX license identifier                            # files
    ---------------------------------------------------|-------
    GPL-2.0                                              11139
 
    and resulted in the first patch in this series.
 
    If that file was a */uapi/* path one, it was "GPL-2.0 WITH
    Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:
 
    SPDX license identifier                            # files
    ---------------------------------------------------|-------
    GPL-2.0 WITH Linux-syscall-note                        930
 
    and resulted in the second patch in this series.
 
  - if a file had some form of licensing information in it, and was one
    of the */uapi/* ones, it was denoted with the Linux-syscall-note if
    any GPL family license was found in the file or had no licensing in
    it (per prior point).  Results summary:
 
    SPDX license identifier                            # files
    ---------------------------------------------------|------
    GPL-2.0 WITH Linux-syscall-note                       270
    GPL-2.0+ WITH Linux-syscall-note                      169
    ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
    ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
    LGPL-2.1+ WITH Linux-syscall-note                      15
    GPL-1.0+ WITH Linux-syscall-note                       14
    ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
    LGPL-2.0+ WITH Linux-syscall-note                       4
    LGPL-2.1 WITH Linux-syscall-note                        3
    ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
    ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1
 
    and that resulted in the third patch in this series.
 
  - when the two scanners agreed on the detected license(s), that became
    the concluded license(s).
 
  - when there was disagreement between the two scanners (one detected a
    license but the other didn't, or they both detected different
    licenses) a manual inspection of the file occurred.
 
  - In most cases a manual inspection of the information in the file
    resulted in a clear resolution of the license that should apply (and
    which scanner probably needed to revisit its heuristics).
 
  - When it was not immediately clear, the license identifier was
    confirmed with lawyers working with the Linux Foundation.
 
  - If there was any question as to the appropriate license identifier,
    the file was flagged for further research and to be revisited later
    in time.
 
 In total, over 70 hours of logged manual review was done on the
 spreadsheet to determine the SPDX license identifiers to apply to the
 source files by Kate, Philippe, Thomas and, in some cases, confirmation
 by lawyers working with the Linux Foundation.
 
 Kate also obtained a third independent scan of the 4.13 code base from
 FOSSology, and compared selected files where the other two scanners
 disagreed against that SPDX file, to see if there was new insights.  The
 Windriver scanner is based on an older version of FOSSology in part, so
 they are related.
 
 Thomas did random spot checks in about 500 files from the spreadsheets
 for the uapi headers and agreed with SPDX license identifier in the
 files he inspected. For the non-uapi files Thomas did random spot checks
 in about 15000 files.
 
 In initial set of patches against 4.14-rc6, 3 files were found to have
 copy/paste license identifier errors, and have been fixed to reflect the
 correct identifier.
 
 Additionally Philippe spent 10 hours this week doing a detailed manual
 inspection and review of the 12,461 patched files from the initial patch
 version early this week with:
  - a full scancode scan run, collecting the matched texts, detected
    license ids and scores
  - reviewing anything where there was a license detected (about 500+
    files) to ensure that the applied SPDX license was correct
  - reviewing anything where there was no detection but the patch license
    was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
    SPDX license was correct
 
 This produced a worksheet with 20 files needing minor correction.  This
 worksheet was then exported into 3 different .csv files for the
 different types of files to be modified.
 
 These .csv files were then reviewed by Greg.  Thomas wrote a script to
 parse the csv files and add the proper SPDX tag to the file, in the
 format that the file expected.  This script was further refined by Greg
 based on the output to detect more types of files automatically and to
 distinguish between header and source .c files (which need different
 comment types.)  Finally Greg ran the script using the .csv files to
 generate the patches.
 
 Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
 Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
 Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
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Merge tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull initial SPDX identifiers from Greg KH:
 "License cleanup: add SPDX license identifiers to some files

  Many source files in the tree are missing licensing information, which
  makes it harder for compliance tools to determine the correct license.

  By default all files without license information are under the default
  license of the kernel, which is GPL version 2.

  Update the files which contain no license information with the
  'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally
  binding shorthand, which can be used instead of the full boiler plate
  text.

  This patch is based on work done by Thomas Gleixner and Kate Stewart
  and Philippe Ombredanne.

  How this work was done:

  Patches were generated and checked against linux-4.14-rc6 for a subset
  of the use cases:

   - file had no licensing information it it.

   - file was a */uapi/* one with no licensing information in it,

   - file was a */uapi/* one with existing licensing information,

  Further patches will be generated in subsequent months to fix up cases
  where non-standard license headers were used, and references to
  license had to be inferred by heuristics based on keywords.

  The analysis to determine which SPDX License Identifier to be applied
  to a file was done in a spreadsheet of side by side results from of
  the output of two independent scanners (ScanCode & Windriver)
  producing SPDX tag:value files created by Philippe Ombredanne.
  Philippe prepared the base worksheet, and did an initial spot review
  of a few 1000 files.

  The 4.13 kernel was the starting point of the analysis with 60,537
  files assessed. Kate Stewart did a file by file comparison of the
  scanner results in the spreadsheet to determine which SPDX license
  identifier(s) to be applied to the file. She confirmed any
  determination that was not immediately clear with lawyers working with
  the Linux Foundation.

  Criteria used to select files for SPDX license identifier tagging was:

   - Files considered eligible had to be source code files.

   - Make and config files were included as candidates if they contained
     >5 lines of source

   - File already had some variant of a license header in it (even if <5
     lines).

  All documentation files were explicitly excluded.

  The following heuristics were used to determine which SPDX license
  identifiers to apply.

   - when both scanners couldn't find any license traces, file was
     considered to have no license information in it, and the top level
     COPYING file license applied.

     For non */uapi/* files that summary was:

       SPDX license identifier                            # files
       ---------------------------------------------------|-------
       GPL-2.0                                              11139

     and resulted in the first patch in this series.

     If that file was a */uapi/* path one, it was "GPL-2.0 WITH
     Linux-syscall-note" otherwise it was "GPL-2.0". Results of that
     was:

       SPDX license identifier                            # files
       ---------------------------------------------------|-------
       GPL-2.0 WITH Linux-syscall-note                        930

     and resulted in the second patch in this series.

   - if a file had some form of licensing information in it, and was one
     of the */uapi/* ones, it was denoted with the Linux-syscall-note if
     any GPL family license was found in the file or had no licensing in
     it (per prior point). Results summary:

       SPDX license identifier                            # files
       ---------------------------------------------------|------
       GPL-2.0 WITH Linux-syscall-note                       270
       GPL-2.0+ WITH Linux-syscall-note                      169
       ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
       ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
       LGPL-2.1+ WITH Linux-syscall-note                      15
       GPL-1.0+ WITH Linux-syscall-note                       14
       ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
       LGPL-2.0+ WITH Linux-syscall-note                       4
       LGPL-2.1 WITH Linux-syscall-note                        3
       ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
       ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

     and that resulted in the third patch in this series.

   - when the two scanners agreed on the detected license(s), that
     became the concluded license(s).

   - when there was disagreement between the two scanners (one detected
     a license but the other didn't, or they both detected different
     licenses) a manual inspection of the file occurred.

   - In most cases a manual inspection of the information in the file
     resulted in a clear resolution of the license that should apply
     (and which scanner probably needed to revisit its heuristics).

   - When it was not immediately clear, the license identifier was
     confirmed with lawyers working with the Linux Foundation.

   - If there was any question as to the appropriate license identifier,
     the file was flagged for further research and to be revisited later
     in time.

  In total, over 70 hours of logged manual review was done on the
  spreadsheet to determine the SPDX license identifiers to apply to the
  source files by Kate, Philippe, Thomas and, in some cases,
  confirmation by lawyers working with the Linux Foundation.

  Kate also obtained a third independent scan of the 4.13 code base from
  FOSSology, and compared selected files where the other two scanners
  disagreed against that SPDX file, to see if there was new insights.
  The Windriver scanner is based on an older version of FOSSology in
  part, so they are related.

  Thomas did random spot checks in about 500 files from the spreadsheets
  for the uapi headers and agreed with SPDX license identifier in the
  files he inspected. For the non-uapi files Thomas did random spot
  checks in about 15000 files.

  In initial set of patches against 4.14-rc6, 3 files were found to have
  copy/paste license identifier errors, and have been fixed to reflect
  the correct identifier.

  Additionally Philippe spent 10 hours this week doing a detailed manual
  inspection and review of the 12,461 patched files from the initial
  patch version early this week with:

   - a full scancode scan run, collecting the matched texts, detected
     license ids and scores

   - reviewing anything where there was a license detected (about 500+
     files) to ensure that the applied SPDX license was correct

   - reviewing anything where there was no detection but the patch
     license was not GPL-2.0 WITH Linux-syscall-note to ensure that the
     applied SPDX license was correct

  This produced a worksheet with 20 files needing minor correction. This
  worksheet was then exported into 3 different .csv files for the
  different types of files to be modified.

  These .csv files were then reviewed by Greg. Thomas wrote a script to
  parse the csv files and add the proper SPDX tag to the file, in the
  format that the file expected. This script was further refined by Greg
  based on the output to detect more types of files automatically and to
  distinguish between header and source .c files (which need different
  comment types.) Finally Greg ran the script using the .csv files to
  generate the patches.

  Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
  Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
  Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'spdx_identifiers-4.14-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  License cleanup: add SPDX license identifier to uapi header files with a license
  License cleanup: add SPDX license identifier to uapi header files with no license
  License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 10:04:46 -07:00
Kees Cook
379777297c mmc: dw_mmc: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:44 +01:00
Douglas Anderson
93c23ae385 mmc: dw_mmc: Cleanup the DTO timer like the CTO one
The recent CTO timer introduced in commit 03de19212e ("mmc: dw_mmc:
introduce timer for broken command transfer over scheme") was causing
observable problems due to race conditions.  Previous patches have
fixed those race conditions.

It can be observed that these same race conditions ought to be
theoretically possible with the DTO timer too though they are
massively less likely to happen because the data timeout is always set
to 0xffffff right now.  That means even at a 200 MHz card clock we
were arming the DTO timer for 94 ms:
  >>> (0xffffff * 1000. / 200000000) + 10
  93.886075

We always also were setting the DTO timer _after_ starting the
transfer, unlike how the old code was seting the CTO timer.

In any case, even though the DTO timer is much less likely to have
races, it still makes sense to add code to handle it _just in case_.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:41 +01:00
Ulf Hansson
eaaffcefaa Merge branch 'fixes' into next 2017-11-02 15:20:33 +01:00
Markus Elfring
2d1d31dda7 mmc: vub300: Use common code in __download_offload_pseudocode()
Add a jump target so that a specific string copy operation is stored
only once at the end of this function implementation.
Replace two calls of the function "strncpy" by goto statements.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:29 +01:00
Markus Elfring
7f8e446b03 mmc: tmio: Use common error handling code in tmio_mmc_host_probe()
* Add a jump target so that a bit of exception handling can be better
  reused at the end of this function.

* Adjust condition checks.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:29 +01:00
Kees Cook
2ee4f62005 mmc: Convert timers to use timer_setup()
In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: Nicolas Pitre <nico@fluxnic.net>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alex Dubov <oakad@yahoo.com>
Cc: Bruce Chang <brucechang@via.com.tw>
Cc: Harald Welte <HaraldWelte@viatech.com>
Cc: Tony Olech <tony.olech@elandigitalsystems.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Shawn Lin <shawn.lin@rock-chips.com>
Cc: Arvind Yadav <arvind.yadav.cs@gmail.com>
Cc: Allen <allen.lkml@gmail.com>
Cc: linux-mmc@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-omap@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:28 +01:00
Adrian Hunter
1c451c139e mmc: sdhci-acpi: Fix voltage switch for some Intel host controllers
Some Intel host controllers use an ACPI device-specific method to ensure
correct voltage switching. Fix voltage switch for those, by adding a call
to the DSM.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:28 +01:00
Adrian Hunter
f07b7952df mmc: sdhci-acpi: Let devices define their own private data
Let devices define their own private data to facilitate device-specific
operations. The size of the private structure is specified in the
sdhci_acpi_slot structure, then sdhci_acpi_probe() will allocate extra
space for it, and sdhci_acpi_priv() can be used to get a reference to it.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:27 +01:00
Chaotian Jing
6b10c9abfb mmc: mediatek: perfer to use rise edge latching for cmd line
data lines have applied to perfer to use rise edge, also need
apply it to cmd line.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:27 +01:00
Chaotian Jing
c8609b2252 mmc: mediatek: improve eMMC hs400 mode read performance
enlarge outstanding value to improve read performance

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:26 +01:00
Chaotian Jing
d17bb71c2c mmc: mediatek: add latch-ck support
some platform(eg.mt2701) does not support "stop clk fix", in
this case, need set correct latch-ck to avoid crc error caused
by stop clock block-internally.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:26 +01:00
Chaotian Jing
3c1a884436 mmc: mediatek: add support of source_cg clock
source clock need an independent cg to control, when doing clk mode
switch, need gate source clock to avoid hw issue(multi-bit sync hw hang)

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:25 +01:00
Chaotian Jing
d9dcbfc880 mmc: mediatek: add stop_clk fix and enhance_rx support
mt2712 supports stop_clk fix and enhance_rx, which can improve
host stability.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:25 +01:00
Chaotian Jing
acde28c434 mmc: mediatek: add busy_check support
bit7 of PATCH_BIT1 has different meaning in new design, to
compatible with previous platform, clear this bit in new
platform.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:24 +01:00
Chaotian Jing
2fea581926 mmc: mediatek: add async fifo and data tune support
mt2701/mt2712 supports async fifo & data tune, which can improve
host stability.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:24 +01:00
Chaotian Jing
39add2521f mmc: mediatek: add pad_tune0 support
from mt2701, the register of PAD_TUNE has been phased out,
while there is a new register of PAD_TUNE0

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:23 +01:00
Chaotian Jing
7f3d58523d mmc: mediatek: make hs400_tune_response only for mt8173
the origin design of hs400_tune_response is for mt8173 because of
mt8173 has a special design. for doing that, we add a new member
"compatible", by now it's only for mt8173.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-02 15:20:23 +01:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Douglas Anderson
9d9491a7da mmc: dw_mmc: Fix the DTO timeout calculation
Just like the CTO timeout calculation introduced recently, the DTO
timeout calculation was incorrect.  It used "bus_hz" but, as far as I
can tell, it's supposed to use the card clock.  Let's account for the
div value, which is documented as 2x the value stored in the register,
or 1 if the register is 0.

NOTE: This was likely not terribly important until commit 16a34574c6
("mmc: dw_mmc: remove the quirks flags") landed because "DIV" is
documented on Rockchip SoCs (the ones that used to define the quirk)
to always be 0 or 1.  ...and, in fact, it's documented to only be 1
with EMMC in 8-bit DDR52 mode.  Thus before the quirk was applied to
everyone it was mostly OK to ignore the DIV value.

I haven't personally observed any problems that are fixed by this
patch but I also haven't tested this anywhere with a DIV other an 0.
AKA: this problem was found simply by code inspection and I have no
failing test cases that are fixed by it.  Presumably this could fix
real bugs for someone out there, though.

Fixes: 16a34574c6 ("mmc: dw_mmc: remove the quirks flags")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-11-01 15:13:45 +01:00
Douglas Anderson
8892b705f5 mmc: dw_mmc: Add locking to the CTO timer
This attempts to instill a bit of paranoia to the code dealing with
the CTO timer.  It's believed that this will make the CTO timer more
robust in the case that we're having very long interrupt latencies.

Note that I originally thought that perhaps this patch was being
overly paranoid and wasn't really needed, but then while I was running
mmc_test on an rk3399 board I saw one instance of the message:
  dwmmc_rockchip fe320000.dwmmc: Unexpected interrupt latency

I had debug prints in the CTO timer code and I found that it was
running CMD 13 at the time.

...so even though this patch seems like it might be overly paranoid,
maybe it really isn't?

Presumably the bad interrupt latency experienced was due to the fact
that I had serial console enabled as serial console is typically where
I place blame when I see absurdly large interrupt latencies.  In this
particular case there was an (unrelated) printout to the serial
console just before I saw the "Unexpected interrupt latency" printout.

...and actually, I managed to even reproduce the problems by running
"iw mlan0 scan > /dev/null" while mmc_test was running.  That not only
does a bunch of PCIe traffic but it also (on my system) outputs some
SELinux log spam.

Fixes: 03de19212e ("mmc: dw_mmc: introduce timer for broken command transfer over scheme")
Tested-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 12:14:52 +01:00
Douglas Anderson
4c2357f57d mmc: dw_mmc: Fix the CTO timeout calculation
In the commit 03de19212e ("mmc: dw_mmc: introduce timer for broken
command transfer over scheme") we tried to calculate the expected
hardware command timeout value.  Unfortunately that calculation isn't
quite correct in all cases.  It used "bus_hz" but, as far as I can
tell, it's supposed to use the card clock.  Let's account for the div
value, which is documented as 2x the value stored in the register, or
1 if the register is 0.

NOTE: It's not expected that this will actually fix anything important
since the 10 ms margin added by the function will pretty much dwarf
any calculations.  The card clock should be 100 kHz at minimum and:
  1000 ms/s * (255 * 2) / 100000 Hz.
Gives us 5.1 ms.

...so really the point of this patch is just to make the code more
"correct" in case anyone ever tries to remove the 10 ms buffer.

Fixes: 03de19212e ("mmc: dw_mmc: introduce timer for broken command transfer over scheme")
Tested-by: Emil Renner Berthing <kernel@esmil.dk>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 12:14:52 +01:00
Douglas Anderson
0363b12d33 mmc: dw_mmc: cancel the CTO timer after a voltage switch
When running with the commit 03de19212e ("mmc: dw_mmc: introduce
timer for broken command transfer over scheme") I found this message
in the log:
  Unexpected command timeout, state 7

It turns out that we weren't properly cancelling the new CTO timer in
the case that a voltage switch was done.  Let's promote the cancel
into the dw_mci_cmd_interrupt() function to fix this.

Fixes: 03de19212e ("mmc: dw_mmc: introduce timer for broken command transfer over scheme")
Tested-by: Emil Renner Berthing <kernel@esmil.dk>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 12:14:52 +01:00
Chaotian Jing
762d491a8b mmc: mediatek: add support of mt2701/mt2712
mt2701/mt2712 has 12bit clock div, which is not compatible with
mt8135/mt8173. and, some additional features will be added in
mt2701/mt2712, so that need distinguish it by comatibale name.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 12:02:44 +01:00
Adrian Hunter
361eeda0ca mmc: sdhci-pci: Tidy o2micro definitions
We keep PCI Ids in sdhci-pci.h and the O2-specific definitions belong in
sdhci-pci-o2micro.c. Move those definitions accordingly. Remove unused O2
definitions in sdhci-pci-core.c. The 3 o2micro external function
declarations might as well be in sdhci-pci.h as well, so move them there
and get rid of sdhci-pci-o2micro.h entirely.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:41 +01:00
Adrian Hunter
159cd328e3 mmc: sdhci-acpi: Tidy Intel slot probe functions into one
Tidy Intel slot probe functions into one. A single function can be used
because the logic uses hid / uid as necessary to identify devices anyway.
This gets rid of some pointless comments and checks for variables that
cannot possibly be NULL, as well as giving the function a name that
identifies it as specific to Intel controllers.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:41 +01:00
Adrian Hunter
a2038497e8 mmc: sdhci-acpi: Use helper function acpi_device_uid()
Make use of acpi_device_uid() instead of open coding.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:40 +01:00
Simon Horman
d6dc425ae5 mmc: renesas_sdhi: implement R-Car Gen[123] fallback compatibility strings
Implement fallback compatibility strings for R-Car Gen 1, 2 and 3.

In the case of Renesas R-Car hardware we know that there are generations of
SoCs, f.e. Gen 1 and 2. But beyond that its not clear what the relationship
between IP blocks might be. For example, I believe that r8a7790 is older
than r8a7791 but that doesn't imply that the latter is a descendant of the
former or vice versa.

We can, however, by examining the documentation and behaviour of the
hardware at run-time observe that the current driver implementation appears
to be compatible with the IP blocks on SoCs within a given generation.

For the above reasons and convenience when enabling new SoCs a
per-generation fallback compatibility string scheme is being adopted for
drivers for Renesas SoCs.

Also, improve readability by listing the shmobile fallback compatibility
string after the more-specific compatibility strings they provide a
fallback for.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:40 +01:00
Wolfram Sang
6186d06c51 mmc: parse new binding for eMMC fixed driver type
Parse the new binding and store it in the host struct after doing some
sanity checks. The code is designed to support fixed SD driver type if
we ever need that.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:38 +01:00
Wolfram Sang
2d87ddd7b6 mmc: usdhi6rol0: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:37 +01:00
Wolfram Sang
2a63303d9b mmc: sdhci: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:37 +01:00
Wolfram Sang
3b649a7369 mmc: omap_hsmmc: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:36 +01:00
Wolfram Sang
337d7c8a4e mmc: mxcmmc: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:36 +01:00
Wolfram Sang
2f98ef63b1 mmc: mtk-sd: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:35 +01:00
Wolfram Sang
510069527b mmc: mmci: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:35 +01:00
Wolfram Sang
aa5754c7d1 mmc: meson-mx-sdio: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:34 +01:00
Wolfram Sang
fa54f3e359 mmc: meson-gx-mmc: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:34 +01:00
Wolfram Sang
0f3a47b800 mmc: dw_mmc: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:33 +01:00
Wolfram Sang
10b0b012d2 mmc: cavium: catch all errors when getting regulators
Bail out everytime when mmc_regulator_get_supply() returns an errno, not
only when probing gets deferred. This is currently a no-op, because this
function only returns -EPROBE_DEFER or 0 right now. But if it will throw
another error somewhen, it will be for a reason. (This still doesn't change
that getting regulators is optional, so 0 can still mean no regulators
found). So, let us a) be future proof and b) have driver code which is
easier to understand.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:33 +01:00
Wolfram Sang
1f90e9a38c mmc: add kerneldoc to mmc_regulator_get_supply()
Especially, make clear what the return value means.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:32 +01:00
Masahiro Yamada
f02cebdfe9 mmc: sdhci-cadence: use bitfield access macros for cleanup
Accessing register fields generally need mask and shift part.
Defining them separately, like SDHCI_CDNS_HRS06_TUNE_{SHIFT,MASK},
is tedious.

Register fields can be always defined by GENMASK (or, BIT if it it
a single bit).  They are nicely handled by FIELD_* macros.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:32 +01:00
Dan Carpenter
2f129d39ad mmc: meson-mx-sdio: Cleanup IS_ERR() checks
Using PTR_ERR_OR_ZERO() instead of IS_ERR() works, but it's not how
you're supposed to write these conditions.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:50:31 +01:00
Dan Carpenter
7599b84932 mmc: meson-mx-sdio: return correct error code
This has a copy and paste bug so we use "host->fixed_factor_clk" which
is a valid pointer instead of "host->cfg_div_clk" which holds the error
code.

Fixes: ed80a13bb4 ("mmc: meson-mx-sdio: Add a driver for the Amlogic Meson8 and Meson8b SoCs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:49:42 +01:00
Jin Qian
04fa054025 mmc: core: export emmc revision
Expose emmc revision as part of device attributes.

Signed-off-by: Jin Qian <jinqian@android.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:04 +01:00
Arnd Bergmann
9ccfa81725 mmc: sdhci-msm: fix x86 build error
The __WARN_printf() function is not portable across architectures
and causes a compile-time error on x86 and others that don't use
the asm-generic version of asm/bug.h:

drivers/mmc/host/sdhci-msm.c: In function 'sdhci_msm_check_power_status':
drivers/mmc/host/sdhci-msm.c:1066:4: error: implicit declaration of function '__WARN_printf'; did you mean '__dev_printk'? [-Werror=implicit-function-declaration]
    __WARN_printf("%s: pwr_irq for req: (%d) timed out\n",
    ^~~~~~~~~~~~~

The change that introduced this error, "mmc: sdhci-msm: Add sdhci msm
register write APIs which wait for pwr irq", likely meant to use
dev_warn(), so I'm changing over to that.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:04 +01:00
Fabrizio Castro
a3d95d1d40 mmc: tmio: check mmc_regulator_get_supply return value
mmc_regulator_get_supply returns -EPROBE_DEFER if either vmmc or
vqmmc regulators had their probing deferred.
vqmmc regulator is needed by UHS to work properly, therefore this
patch checks the value returned by mmc_regulator_get_supply to
make sure we have a reference to both vmmc and vqmmc (if found in
the DT).

Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:03 +01:00
Wolfram Sang
aaab3c4655 mmc: sunxi: drop superfluous error message
This error message can go because a) currently nothing else than
EPROBE_DEFER is returned and b) if this is going to change a much more
detailed error message should come from mmc_regulator_get_supply()
anyhow.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:03 +01:00
Carlo Caione
ed80a13bb4 mmc: meson-mx-sdio: Add a driver for the Amlogic Meson8 and Meson8b SoCs
Add a driver for the SDIO/MMC host found on the Amlogic Meson SoCs. This
is an MMC controller which provides an interface between the application
processor and various memory cards. It supports the SD specification
v2.0 and the eMMC specification v4.41.

The controller provides an internal "mux" which allows connecting up to
three MMC devices to it. Only one device can be used at a time though
since the registers are shared across all devices. The driver takes care
of synchronizing access (similar to the dw_mmc driver).
The maximum supported bus-width is 4-bits.

Amlogic's GPL kernel sources call the corresponding driver "aml_sdio" to
differentiate it from the other MMC controller in (at least the Meson8
and Meson8b) the SoCs (they call the other drivers aml_sdhc and
aml_sdhc_m8, which seem to support a bus-width of up to 8-bits). This
means that there are three different MMC host controller IP blocks from
Amlogic (each of them with completely own register layout and features):
- "SDIO": 1 and 4 bit bus width, support for high-speed modes up to
  UHS-I SDR50, part of Meson6, Meson8 and Meson8b (the driver from this
  patch targets this controller)
- "SDHC": 1, 4 and 8 bit bus width, compatible with standard iNAND
  interface, support for speeds up to HS200 and MMC spec up to version
  4.5x, part of Meson8 and Meson8b SoCs (there is no mainline driver
  for this controller yet)
- "SDEMMC": 1, 4 and 8 bit bus width, support for speeds up to HS400
  and MMC spec up to version 5.0, part of the Meson GX (64-bit) SoCs
  (supported by the meson-gx MMC host driver)

Signed-off-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:02 +01:00
Colin Ian King
519c51af0d mmc: sdhci-of-at91: make function sdhci_at91_set_uhs_signaling static
The function sdhci_at91_set_uhs_signaling  is local to the source and does
not need to be in global scope, so make it static.

Cleans up sparse warning:
symbol 'sdhci_at91_set_uhs_signaling' was not declared. Should it be
static?

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:01 +01:00
Colin Ian King
085cc3ab39 mmc: dw_mmc-k3: make array hs_timing_cfg static
The array hs_timing_cfg is local to the source and does not need to
be in global scope, so make it static.

Cleans up sparse warning:
symbol 'hs_timing_cfg' was not declared. Should it be static?

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:01 +01:00
Marek Szyprowski
3a8e9cad3e mmc: sdhci-s3c: Fix driver data for Exynos4 SoCs
Support for non-dt based initialization for Exynos SoCs has been removed,
so there is no need to keep driver IDs for this case. While touching this,
replace odd conditional code for instantiating driver data for Exynos4
SoCs with a simple reference and move that driver data under CONFIG_OF.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:00 +01:00
Jan Glauber
62467bbbbc mmc: cavium: Depend on GPIO driver
Without the ThunderX/OcteonTx GPIO driver the MMC driver
would not power up any MMC devices. Therefore add a
dependency to the GPIO driver and remove the unneeded GPIOLIB
dependency.

Signed-off-by: Jan Glauber <jglauber@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:46:00 +01:00
Vijay Viswanath
c0309b3803 mmc: sdhci-msm: Add sdhci msm register write APIs which wait for pwr irq
Register writes which change voltage of IO lines or turn the IO bus
on/off require controller to be ready before progressing further. When
the controller is ready, it will generate a power irq which needs to be
handled. The thread which initiated the register write should wait for
power irq to complete. This will be done through the new sdhc msm write
APIs which will check whether the particular write can trigger a power
irq and wait for it with a timeout if it is expected.
The SDHC core power control IRQ gets triggered when -
* There is a state change in power control bit (bit 0)
  of SDHCI_POWER_CONTROL register.
* There is a state change in 1.8V enable bit (bit 3) of
  SDHCI_HOST_CONTROL2 register.
* Bit 1 of SDHCI_SOFTWARE_RESET is set.

Also add support APIs which are used by sdhc msm write APIs to check
if power irq is expected to be generated and wait for the power irq
to come and complete if the irq is expected.

This patch requires CONFIG_MMC_SDHCI_IO_ACCESSORS to be enabled.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:45:59 +01:00
Vijay Viswanath
99d570da30 mmc: Kconfig: Enable CONFIG_MMC_SDHCI_IO_ACCESSORS
Enable CONFIG_MMC_SDHCI_IO_ACCESSORS so that SDHC controller specific
register read and write APIs, if registered, can be used.

Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2017-10-30 11:45:59 +01:00