Commit Graph

1824 Commits

Author SHA1 Message Date
Imre Deak 4225fc8555 lib/scatterlist: use page iterator in the mapping iterator
For better code reuse use the newly added page iterator to iterate
through the pages.  The offset, length within the page is still
calculated by the mapping iterator as well as the actual mapping.  Idea
from Tejun Heo.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 19:10:10 -08:00
Linus Torvalds ed5dc2372d MMC highlights for 3.9:
Core:
  - Support for packed commands in eMMC 4.5.  (This requires a host
    capability to be turned on.  It increases write throughput by 20%+,
    but may also increase average write latency; more testing needed.)
  - Add DT bindings for capability flags.
  - Add mmc_of_parse() for shared DT parsing between drivers.
 
 Drivers:
  - android-goldfish: New MMC driver for the Android Goldfish emulator.
  - mvsdio: Add DT bindings, pinctrl, use slot-gpio for card detection.
  - omap_hsmmc: Fix boot hangs with RPMB partitions.
  - sdhci-bcm2835: New driver for controller used by Raspberry Pi.
  - sdhci-esdhc-imx: Add 8-bit data, auto CMD23 support, use slot-gpio.
  - sh_mmcif: Add support for eMMC DDR, bundled MMCIF IRQs.
  - tmio_mmc: Add DT bindings, support for vccq regulator.
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Merge tag 'mmc-updates-for-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC update from Chris Ball:
 "MMC highlights for 3.9:

  Core:
   - Support for packed commands in eMMC 4.5.  (This requires a host
     capability to be turned on.  It increases write throughput by 20%+,
     but may also increase average write latency; more testing needed.)
   - Add DT bindings for capability flags.
   - Add mmc_of_parse() for shared DT parsing between drivers.

  Drivers:
   - android-goldfish: New MMC driver for the Android Goldfish emulator.
   - mvsdio: Add DT bindings, pinctrl, use slot-gpio for card detection.
   - omap_hsmmc: Fix boot hangs with RPMB partitions.
   - sdhci-bcm2835: New driver for controller used by Raspberry Pi.
   - sdhci-esdhc-imx: Add 8-bit data, auto CMD23 support, use slot-gpio.
   - sh_mmcif: Add support for eMMC DDR, bundled MMCIF IRQs.
   - tmio_mmc: Add DT bindings, support for vccq regulator"

* tag 'mmc-updates-for-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (92 commits)
  mmc: tegra: assume CONFIG_OF, remove platform data
  mmc: add DT bindings for more MMC capability flags
  mmc: tmio: add support for the VccQ regulator
  mmc: tmio: remove unused and deprecated symbols
  mmc: sh_mobile_sdhi: use managed resource allocations
  mmc: sh_mobile_sdhi: remove unused .pdata field
  mmc: tmio-mmc: parse device-tree bindings
  mmc: tmio-mmc: define device-tree bindings
  mmc: sh_mmcif: use mmc_of_parse() to parse standard MMC DT bindings
  mmc: (cosmetic) remove "extern" from function declarations
  mmc: provide a standard MMC device-tree binding parser centrally
  mmc: detailed definition of CD and WP MMC line polarities in DT
  mmc: sdhi, tmio: only check flags in tmio-mmc driver proper
  mmc: sdhci: Fix parameter of sdhci_do_start_signal_voltage_switch()
  mmc: sdhci: check voltage range only on regulators aware of voltage value
  mmc: bcm2835: set SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK
  mmc: support packed write command for eMMC4.5 devices
  mmc: add packed command feature of eMMC4.5
  mmc: rtsx: remove driving adjustment
  mmc: use regulator_can_change_voltage() instead of regulator_count_voltages
  ...
2013-02-26 09:31:09 -08:00
Linus Torvalds ab7826595e This is the MFD pull request for the 3.9 merge window.
No new drivers this time, but a bunch of fairly big cleanups:
 
 - Roger Quadros worked on a OMAP USBHS and TLL platform data consolidation,
   OMAP5 support and clock management code cleanup.
 
 - The first step of a major sync for the ab8500 driver from Lee Jones. In
   particular, the debugfs and the sysct interfaces got extended and improved.
 
 - Peter Ujfalusi sent a nice patchset for cleaning and fixing the twl-core
   driver, with a much needed module id lookup code improvement.
 
 - The regular wm5102 and arizona cleanups and fixes from Mark Brown.
 
 - Laxman Dewangan extended the palmas APIs in order to implement the palmas
   GPIO and rt drivers.
 
 - Laxman also added DT support for the tps65090 driver.
 
 - The Intel SCH and ICH drivers got a couple fixes from Aaron Sierra and
   Darren Hart.
 
 - Linus Walleij patchset for the ab8500 driver allowed ab8500 and ab9540 based
   devices to switch to the new abx500 pin-ctrl driver.
 
 - The max8925 now has device tree and irqdomain support thanks to Qing Xu.
 
 - The recently added rtsx driver got a few cleanups and fixes for a better
   card detection code path and now also supports the RTS5227 chipset, thanks
   to Wei Wang and Roger Tseng.
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Merge tag 'mfd-3.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6

Pull MFS updates from Samuel Ortiz:
 "This is the MFD pull request for the 3.9 merge window.

  No new drivers this time, but a bunch of fairly big cleanups:

   - Roger Quadros worked on a OMAP USBHS and TLL platform data
     consolidation, OMAP5 support and clock management code cleanup.

   - The first step of a major sync for the ab8500 driver from Lee
     Jones.  In particular, the debugfs and the sysct interfaces got
     extended and improved.

   - Peter Ujfalusi sent a nice patchset for cleaning and fixing the
     twl-core driver, with a much needed module id lookup code
     improvement.

   - The regular wm5102 and arizona cleanups and fixes from Mark Brown.

   - Laxman Dewangan extended the palmas APIs in order to implement the
     palmas GPIO and rt drivers.

   - Laxman also added DT support for the tps65090 driver.

   - The Intel SCH and ICH drivers got a couple fixes from Aaron Sierra
     and Darren Hart.

   - Linus Walleij patchset for the ab8500 driver allowed ab8500 and
     ab9540 based devices to switch to the new abx500 pin-ctrl driver.

   - The max8925 now has device tree and irqdomain support thanks to
     Qing Xu.

   - The recently added rtsx driver got a few cleanups and fixes for a
     better card detection code path and now also supports the RTS5227
     chipset, thanks to Wei Wang and Roger Tseng."

* tag 'mfd-3.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (109 commits)
  mfd: lpc_ich: Use devres API to allocate private data
  mfd: lpc_ich: Add Device IDs for Intel Wellsburg PCH
  mfd: lpc_sch: Accomodate partial population of the MFD devices
  mfd: da9052-i2c: Staticize da9052_i2c_fix()
  mfd: syscon: Fix sparse warning
  mfd: twl-core: Fix kernel panic on boot
  mfd: rtsx: Fix issue that booting OS with SD card inserted
  mfd: ab8500: Fix compile error
  mfd: Add missing GENERIC_HARDIRQS dependecies
  Documentation: Add docs for max8925 dt
  mfd: max8925: Add dts
  mfd: max8925: Support dt for backlight
  mfd: max8925: Fix onkey driver irq base
  mfd: max8925: Fix mfd device register failure
  mfd: max8925: Add irqdomain for dt
  mfd: vexpress: Allow vexpress-sysreg to self-initialise
  mfd: rtsx: Support RTS5227
  mfd: rtsx: Implement driving adjustment to device-dependent callbacks
  mfd: vexpress: Add pseudo-GPIO based LEDs
  mfd: ab8500: Rename ab8500 to abx500 for hwmon driver
  ...
2013-02-24 20:00:58 -08:00
Stephen Warren 0e78610294 mmc: tegra: assume CONFIG_OF, remove platform data
Tegra only supports, and always enables, device tree. Remove all ifdefs
and runtime checks for DT support from the driver. Platform data is
therefore no longer required. Rework the driver to parse the device tree
directly into struct sdhci_tegra.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:26 -05:00
Guennadi Liakhovetski 619b08d45a mmc: tmio: add support for the VccQ regulator
Some SD/MMC interfaces use 2 power regulators: one to power the card itself
(Vcc) and another one to pull signal lines up (VccQ). In case of eMMC and
UHS SD cards the regulators also have to be configured to supply different
voltages. The preferred order of turning supply power on and off is to
turn Vcc first on and last off.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:24 -05:00
Guennadi Liakhovetski ac51b9611d mmc: sh_mobile_sdhi: use managed resource allocations
Use managed allocations to get memory, clock and interrupts . This
significantly simplifies clean up paths.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:23 -05:00
Guennadi Liakhovetski 76a411f9f9 mmc: sh_mobile_sdhi: remove unused .pdata field
The struct sh_mobile_sdhi_info::pdata field was only used for platform-
based card detection and isn't used anymore since the migration to GPIO-
based MMC slot functions. Remove it.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:22 -05:00
Guennadi Liakhovetski 5a00a971a2 mmc: tmio-mmc: parse device-tree bindings
Add parsing of common and driver-specific DT bindings to the tmio-mmc
MMC host driver and the sh_mobile_sdhi interface layer.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:22 -05:00
Guennadi Liakhovetski eca889f60c mmc: sh_mmcif: use mmc_of_parse() to parse standard MMC DT bindings
Use mmc_of_parse() to get interface capability flags and used GPIOs from
device-tree bindings.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:21 -05:00
Guennadi Liakhovetski 7b952137fd mmc: sdhi, tmio: only check flags in tmio-mmc driver proper
tmio-mmc platform flags can be set by various means, including caller
drivers and device-tree bindings, therefore it is better to only check
them in the tmio-mmc driver proper, not in caller drivers themselves.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:18 -05:00
Fabio Estevam 21f5998f10 mmc: sdhci: Fix parameter of sdhci_do_start_signal_voltage_switch()
3714f4315354 ("mmc: sdhci: update signal voltage switch code") changed the
type of the second parameter of sdhci_do_start_signal_voltage_switch(),
from "struct mmc_ios *ios" to "int signal_voltage" which causes the
following build warning:

drivers/mmc/host/sdhci.c:2044:2: warning: initialization from incompatible pointer type [enabled by default]
drivers/mmc/host/sdhci.c:2044:2: warning: (near initialization for 'sdhci_ops.start_signal_voltage_switch') [enabled by default]

Use the previous type so that it matches the start_signal_voltage_switch()
definition from host.h.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Johan Rudholm <johan.rudholm@stericsson.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:18 -05:00
Marek Szyprowski a4f8f257ed mmc: sdhci: check voltage range only on regulators aware of voltage value
Some regulators don't report any voltage values, so checking supported
voltage range results in disabling all SDHCI_CAN_VDD_* flags and
registration failure. This patch finally provides a correct fix for the
registration of SDHCI driver with all possible voltage regulators:
dummy, fixed and regulated without using regulator_count_voltages()
hacks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:17 -05:00
Stephen Warren 29866a98be mmc: bcm2835: set SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK does basically the same as
implementing struct sdhci_ops .get_timeout_clock, so simply set that
quirk and remove the custom code to simplify the driver.

Reported-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:16 -05:00
Roger Tseng ac48653cec mmc: rtsx: remove driving adjustment
Several new models of readers use different way to select driving
capability (a necessary adjustment along with voltage change). Removing
this from device-independent rtsx_pci_sdmmc module. It will be implemented
in device-depend calls encapsulated by rtsx_pci_switch_output_voltage().

Signed-off-by: Roger Tseng <rogerable@realtek.com>
Reviewed-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:15 -05:00
Kevin Liu bb691ae464 mmc: sdhci-pxav3: add pm runtime support
Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Jialing Fu <jlfu@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:13 -05:00
Kevin Liu 52983382c7 mmc: sdhci: enhance preset value function
4d55c5a1 ("mmc: sdhci: enable preset value after uhs initialization")
added preset value support and enabled it by default during sd card init.

Below are the enhancements introduced by this patch:

1. In current code, preset value is enabled after setting clock finished,
which means the clock is manually set by driver firstly and then suddenly
switched to preset value at this point. So the first setting is useless
and unnecessary. What's more, the first clock setting may differ from the
preset one.  The better way is enable preset value just after switch to
UHS mode so the preset value can take effect immediately. So move preset
value enable from mmc_sd_init_card to sdhci_set_ios which will be called
during set timing.

2. In current code, preset value is disabled at the beginning of
mmc_attach_sd.  It's too late since low freq (400khz) should be set in
mmc_power_up.  So move preset value disable to sdhci_set_ios which will
be called during power up.

3. host->clock and ios->drv_type should also be updated according to the
preset value if it's enabled. Current code missed this.

4. This patch also introduce a quirk to disable preset value in case
preset value doesn't work.

This patch has been verified on sdhci-pxav3 platform with both preset
enabled and disabled.

Signed-off-by: Kevin Liu <kliu5@marvell.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:11 -05:00
Roland Stigge 073350f7b5 mmc: mmc_spi: Fix return value evaluation of irq_of_parse_and_map()
When irq_of_parse_and_map() returns an error, it does as zero. But in
mmc_spi_get_pdata(), the error return case is compared against NO_IRQ.
This might work where NO_IRQ is zero (defaults to zero when undefined,
as on MIPS) but not where NO_IRQ is different, e.g. on ARM where it's -1.

This patch changes to comparison with 0 which is the error return value
of irq_of_parse_and_map().

Tested on ARM that mmc_spi is working now.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:10 -05:00
Lars-Peter Clausen d005d94359 mmc: sdhci-pltfm: Add a common clk API implementation of get_timeout_clock
Quite a few drivers have a implementation of the get_timeout_clock
callback which simply returns the result of clk_get_rate on the device's
clock. This patch adds a common implementation of this to the sdhci-pltfm
module and replaces all custom implementations with the common one.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:09 -05:00
Kevin Liu 20b92a30b5 mmc: sdhci: update signal voltage switch code
The protocol related code is moved to core stack. So update the host
driver accordingly.

Signed-off-by: Kevin Liu <kliu5@marvell.com>
Tested-by: Tim Wang <wangtt@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:09 -05:00
Mike Lockwood 85c34d2e7b mmc: goldfish: emulated MMC device
This driver handles the virtual MMC device present in the Goldfish emulator.
The patch folds together initial work from Mike Lockwood and patches by
San Mehat, Jun Nakajima and Tom Keel <thomas.keel@intel.com> plus cleanups
by Alan Cox to get it all into 3.6 shape.

Signed-off-by: Mike A. Chan <mikechan@google.com>
[cleaned up and x86 support added]
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Xiaohui Xin <xiaohui.xin@intel.com>
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
[Moved to 3.4]
Signed-off-by: Tom Keel <thomas.keel@intel.com>
[Moved to 3.7]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:04 -05:00
Sascha Hauer af51079e68 mmc: sdhci-esdhc-imx: support 8bit mode
The i.MX esdhc has a nonstandard bit layout for the SDHCI_HOST_CONTROL
register. To support 8bit bus width on i.MX populate the platform_bus_width
callback. This is tested on an i.MX25, but should according to the datasheets
work on the other i.MX using this hardware aswell. The i.MX6, while having
a SDHCI_SPEC_300 controller, still uses the same nonstandard register layout.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:03 -05:00
Sascha Hauer 7bc088d38f mmc: sdhci: rename platform_8bit_width to platform_bus_width
The 8bit in the function name is misleading. When set, it will be
used to set the bus width, regardless of whether 8bit or another
bus width is requested, so change the function name to
platform_bus_width.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:02 -05:00
Shawn Guo 2a15f981ae mmc: sdhci-esdhc-imx: Auto CMD23 support for usdhc
SDHCI core will try to use Auto CMD23 for mmc card.  Currently, we will
see the following message with mmc card on usdhc due to the lacking of
Auto CMD23 support in the driver.

$ mmc0: new high speed MMC card at address 0001
mmcblk1: mmc0:0001 MMC02G 1.87 GiB
mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card status 0xb00
mmcblk1: retrying using single block read
 mmcblk1:

Enable Auto CMD23 support for usdhc so that mmc card can work in
multiple block mode.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:02 -05:00
Shawn Guo 58c8c4fbdb mmc: sdhci-esdhc-imx: manually reset MIX_CTRL for usdhc
It's another violation to SDHC spec that software reset on usdhc
does not reset MIX_CTRL register.  Have to do it manually, otherwise
the preserving of the register bits (e.g. AC23EN) may cause mmc card
fail to be initialized.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:01 -05:00
Shawn Guo 69f5469822 mmc: sdhci-esdhc-imx: separate transfer mode from command write for usdhc
The combining of SDHCI_TRANSFER_MODE and SDHCI_COMMAND writes is only
required for esdhc, but not necessarily for usdhc.  Different from
esdhc where the bits for transfer mode and command are all in the same
register CMD_XFR_TYP, usdhc has a newly introduced register MIX_CTRL
to hold transfer mode bits.  So it makes more sense to separate transfer
mode from command write for usdhc.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:37:01 -05:00
Fabio Estevam da86a5d4ef mmc: sdhci-esdhc-imx: Remove unused variables
3f175a6e5 (mmc: sdhci-esdhc-imx: remove ESDHC_CD_GPIO handling from IO
accessory) introduced the following build warnings:

drivers/mmc/host/sdhci-esdhc-imx.c:149:30: warning: unused variable 'boarddata' [-Wunused-variable]
drivers/mmc/host/sdhci-esdhc-imx.c:181:30: warning: unused variable 'boarddata' [-Wunused-variable]

Remove the unused variables.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:59 -05:00
Shawn Guo 60bf6396fb mmc: sdhci-esdhc-imx: name esdhc specific definitions with ESDHC_ prefix
Rename esdhc local definitions with ESDHC_ rather than SDHCI_ prefix,
so that we can distinguish them from SDHCI core definitions from name.

A couple of bit fields are also changed use shift for consistency and
better readability.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:58 -05:00
Shawn Guo 6b40d18295 mmc: sdhci-esdhc-imx: remove D3CD check from SDHCI_HOST_CONTROL write
SDHCI_CTRL_D3CD is not a standard SDHCI_HOST_CONTROL, so there is no
need to check it in SDHCI_HOST_CONTROL write at all.  Remove it.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:57 -05:00
Shawn Guo ef4d0888bb mmc: sdhci-esdhc-imx: fix host version read
When commit 95a2482 (mmc: sdhci-esdhc-imx: add basic imx6q usdhc
support) works around host version issue on imx6q, it gets the
register address fixup "reg ^= 2" lost for imx25/35/51/53 esdhc.
Thus, the controller version on these SoCs is wrongly identified
as v1 while it's actually v2.

Add the address fixup back and take a different approach to correct
imx6q host version, so that the host version read gets back to work
for all SoCs.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:56 -05:00
Tony Prisk 893613b06f mmc: vt8500: Remove erroneous __exitp in wmt_mci_driver
With the __devinit/__devexit attributes having been removed, this
__exitp attribute causes an unused function warning and should be
removed as well.

Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:56 -05:00
Doug Anderson 9640639b09 mmc: dw_mmc: Remove DW_MCI_QUIRK_NO_WRITE_PROTECT
The original quirk was added in the change 'mmc: dw_mmc: add quirk to
indicate missing write protect line'.  The original quirk was added at
a controller level even though each slot has its own write protect (so
the quirk should be at the slot level).  A recent change (mmc: dw_mmc:
Add "disable-wp" device tree property) added a slot-level quirk and
support for the quirk directly to dw_mmc.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:55 -05:00
Doug Anderson 55a6ceb2d5 mmc: dw_mmc: Handle wp-gpios from device tree
On some SoCs (like exynos5250) you need to use an external GPIO for
write protect.  Add support for wp-gpios to the core dw_mmc driver
since it could be useful across multiple SoCs.

With this change I am able to make use of the write protect for the
external SD slot on exynos5250-snow.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:54 -05:00
Doug Anderson 07b240411f mmc: dw_mmc: exynos: Remove code for wp-gpios
The exynos code claimed the write protect with devm_gpio_request() but
never did anything with it.  That meant that anyone using a write
protect GPIO would effectively be write protected all the time.

The handling for wp-gpios belongs in the main dw_mmc driver and has
been moved there.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:54 -05:00
Doug Anderson a70aaa64da mmc: dw_mmc: Add "disable-wp" device tree property
The "disable-wp" property is used to specify that a given SD card slot
doesn't have a concept of write protect.  This eliminates the need for
special case code for SD slots that should never be write protected
(like a micro SD slot or a dev board).

The dw_mmc driver is special in needing to specify "disable-wp"
because the lack of a "wp-gpios" property means to use the special
purpose write protect line.  On some other mmc devices the lack of
"wp-gpios" means that write protect should be disabled.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:52 -05:00
Fabio Estevam fd63ac761a mmc: mxs-mmc: Fix warning due to incorrect type
Fixes the following warning when building with W=1 option:

drivers/mmc/host/mxs-mmc.c: In function 'mxs_mmc_adtc':
drivers/mmc/host/mxs-mmc.c:401:2: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

The warning happens because 'i' is used in 'for_each_sg(sgl, sg, sg_len, i)' and should be made unsigned.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:51 -05:00
Fabio Estevam e7be434acc mmc: mxs-mmc: Add MODULE_ALIAS()
Add an entry for MODULE_ALIAS().

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:50 -05:00
Thomas Petazzoni 6f1989bc98 mmc: mvsdio: add pinctrl integration
On many Marvell SoCs, the pins used for the SDIO interface are part of
the MPP pins, that are muxable pins. In order to get the muxing of
those pins correct, this commit integrates the mvsdio driver with the
pinctrl infrastructure by calling devm_pinctrl_get_select_default()
during ->probe().

Note that we permit this function to fail because not all Marvell
platforms have yet been fully converted to using the pinctrl
infrastructure.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Stefan Peter <s.peter@mpl.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-24 14:36:42 -05:00
Linus Torvalds 7ed214ac20 Char/Misc driver patches for 3.9-rc1
Here's the big char/misc driver patches for 3.9-rc1.
 
 Nothing major here, just lots of different driver updates (mei, hyperv, ipack,
 extcon, vmci, etc.).
 
 All of these have been in the linux-next tree for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver patches from Greg Kroah-Hartman:
 "Here's the big char/misc driver patches for 3.9-rc1.

  Nothing major here, just lots of different driver updates (mei,
  hyperv, ipack, extcon, vmci, etc.).

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

* tag 'char-misc-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (209 commits)
  w1: w1_therm: Add force-pullup option for "broken" sensors
  w1: ds2482: Added 1-Wire pull-up support to the driver
  vme: add missing put_device() after device_register() fails
  extcon: max8997: Use workqueue to check cable state after completing boot of platform
  extcon: max8997: Set default UART/USB path on probe
  extcon: max8997: Consolidate duplicate code for checking ADC/CHG cable type
  extcon: max8997: Set default of ADC debounce time during initialization
  extcon: max8997: Remove duplicate code related to set H/W line path
  extcon: max8997: Move defined constant to header file
  extcon: max77693: Make max77693_extcon_cable static
  extcon: max8997: Remove unreachable code
  extcon: max8997: Make max8997_extcon_cable static
  extcon: max77693: Remove unnecessary goto statement to improve readability
  extcon: max77693: Convert to devm_input_allocate_device()
  extcon: gpio: Rename filename of extcon-gpio.c according to kernel naming style
  CREDITS: update email and address of Harald Hoyer
  extcon: arizona: Use MICDET for final microphone identification
  extcon: arizona: Always take the first HPDET reading as the final one
  extcon: arizona: Clear _trig_sts bits after jack detection
  extcon: arizona: Don't HPDET magic when headphones are enabled
  ...
2013-02-21 13:57:13 -08:00
Linus Torvalds 06991c28f3 Driver core patches for 3.9-rc1
Here is the big driver core merge for 3.9-rc1
 
 There are two major series here, both of which touch lots of drivers all
 over the kernel, and will cause you some merge conflicts:
   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.
   - remove CONFIG_EXPERIMENTAL
 
 If you need me to provide a merged tree to handle these resolutions,
 please let me know.
 
 Other than those patches, there's not much here, some minor fixes and
 updates.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg Kroah-Hartman:
 "Here is the big driver core merge for 3.9-rc1

  There are two major series here, both of which touch lots of drivers
  all over the kernel, and will cause you some merge conflicts:

   - add a new function called devm_ioremap_resource() to properly be
     able to check return values.

   - remove CONFIG_EXPERIMENTAL

  Other than those patches, there's not much here, some minor fixes and
  updates"

Fix up trivial conflicts

* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
  base: memory: fix soft/hard_offline_page permissions
  drivercore: Fix ordering between deferred_probe and exiting initcalls
  backlight: fix class_find_device() arguments
  TTY: mark tty_get_device call with the proper const values
  driver-core: constify data for class_find_device()
  firmware: Ignore abort check when no user-helper is used
  firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
  firmware: Make user-mode helper optional
  firmware: Refactoring for splitting user-mode helper code
  Driver core: treat unregistered bus_types as having no devices
  watchdog: Convert to devm_ioremap_resource()
  thermal: Convert to devm_ioremap_resource()
  spi: Convert to devm_ioremap_resource()
  power: Convert to devm_ioremap_resource()
  mtd: Convert to devm_ioremap_resource()
  mmc: Convert to devm_ioremap_resource()
  mfd: Convert to devm_ioremap_resource()
  media: Convert to devm_ioremap_resource()
  iommu: Convert to devm_ioremap_resource()
  drm: Convert to devm_ioremap_resource()
  ...
2013-02-21 12:05:51 -08:00
Russell King 573f8c8d13 Merge branches 'fixes' and 'mmci' into for-linus 2013-02-20 14:35:45 +00:00
Wei WANG c3481955f6 mfd: rtsx: Fix issue that booting OS with SD card inserted
Realtek card reader supports both SD and MS card. According to the
settings of rtsx MFD driver, SD host will be probed before MS host.
If we boot/reboot Linux with SD card inserted, the resetting flow of SD
card will succeed, and the following resetting flow of MS is sure to fail.
Then MS upper-level driver will ask rtsx driver to turn power off. This
request leads to the result that the following SD commands fail and SD card
can't be accessed again.

In this commit, Realtek's SD and MS host driver will check whether the card
that upper driver requesting is the one existing in the slot. If not, Realtek's
host driver will refuse the operation to make sure the exlusive accessing
at the same time.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-02-14 00:24:12 +01:00
Thomas Petazzoni 111936ff3b mmc: mvsdio: implement a Device Tree binding
This patch adds a simple Device Tree binding for the mvsdio driver, as
well as the necessary documentation for it. Compatibility with non-DT
platforms is preserved, by keeping the platform_data based
initialization.

We introduce a small difference between non-DT and DT platforms: DT
platforms are required to provide a clocks = <...> property, which the
driver uses to get the frequency of the clock that goes to the SDIO
IP. The behaviour on non-DT platforms is kept unchanged: a clock
reference is not mandatory, but the clock frequency must be passed in
the "clock" field of the mvsdio_platform_data structure.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Stefan Peter <s.peter@mpl.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:54 -05:00
Thomas Petazzoni 07728b77c0 mmc: mvsdio: use slot-gpio for card detect gpio
The MMC core subsystem provides in drivers/mmc/core/slot-gpio.c a nice
set of helper functions to simplify the management of the card detect
GPIO in MMC host drivers. This patch migrates the mvsdio driver to
using those helpers, which will make the ->probe() code simpler, and
therefore ease the process of adding a Device Tree binding for this
driver.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Stefan Peter <s.peter@mpl.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:53 -05:00
Thomas Petazzoni 3724482d4c mmc: mvsdio: use slot-gpio infrastructure for write protect gpio
The MMC core subsystem provides in drivers/mmc/core/slot-gpio.c a nice
set of helper functions to simplify the management of the write
protect GPIO in MMC host drivers. This patch migrates the mvsdio
driver to using those helpers, which will make the ->probe() code
simpler, and therefore ease the process of adding a Device Tree
binding for this driver.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Stefan Peter <s.peter@mpl.ch>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:53 -05:00
Shawn Guo a043859043 mmc: sdhci-esdhc-imx: remove ESDHC_CD_GPIO handling from IO accessory
With commit 9444e07 (mmc: remove unncessary mmc_gpio_free_cd() call from
slot-gpio users) in place, the ESDHC_CD_GPIO handling in IO accessories
becomes unnecessary.  Remove it.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:52 -05:00
Andy Shevchenko 8213af3b7a mmc: sdhci: introduce sdhci_update_clock helper to re-enable clock
There are three places where same piece of code is used. Let's split it
to a separate function.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:52 -05:00
Kevin Liu 740b7a44ae mmc: sdhci-pxav3: add IRQ wake up support
[cjb: The MMP3 architecture requires a registered interrupt to retire wfi
when waking from suspend.]

Signed-off-by: Jialing Fu <jlfu@marvell.com>
Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:51 -05:00
Kevin Liu ad080d7916 mmc: sdhci: add IRQ wake up support
Don't disable SD Host IRQ during suspend if it is wake up source.
Enable wakeup event during suspend.

Signed-off-by: Jialing Fu <jlfu@marvell.com>
Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:50 -05:00
Kevin Liu b0a8dece55 mmc: sdhci: disable interrupt before free_irq
Current code missed disabling interrupts before free irq which is shared.

Notice below comments for function free_irq (kernel/irq/manage.c):
On a shared IRQ the caller must ensure the interrupt is disabled
on the card it drives before calling this function.

Original code has below issue during suspend/resume when multiple SD
hosts share the same IRQ:
1. Assume there are two hosts (host1 for emmc while host2 for sd) share
the same mmc irq.
2. When system suspend, host2 will be suspended before host1.
So the sequence is below:
	step1: irq handler for host2 removed ->
	step2: irq handler for host1 removed and irq disabled ->
	... system suspended ...
	... system resumed ...
	step3: irq enabled and the irq handler for host1 restored ->
	step4: irq handler for host2 restored
3. So there is the buggy time slot that the irq is enabled but the irq
handler for host2 is removed. Then host2 interrupt can be triggered
but can't be handled at that moment.

Signed-off-by: Jialing Fu <jlfu@marvell.com>
Signed-off-by: Kevin Liu <kliu5@marvell.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:50 -05:00
Stephen Warren 1a94715d4d mmc: add BCM2835 driver
Add a very simple driver for the BCM2835 SoC, which is used in the
Raspberry Pi board.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
2013-02-11 13:28:49 -05:00