Commit Graph

417886 Commits

Author SHA1 Message Date
Linus Torvalds
8e50966072 GPIO tree bulk changes for v3.14
A big set this merge window, as we have much going on in
 this subsystem. Major changes this time:
 
 - Some core improvements and cleanups to the new GPIO
   descriptor API. This seems to be working now so we can
   start the exodus to this API, moving gradually away from
   the global GPIO numberspace.
 
 - Incremental improvements to the ACPI GPIO core, and move
   the few GPIO ACPI clients we have to the GPIO descriptor
   API right *now* before we go any further. We actually
   managed to contain this *before* we started to litter
   the kernel with yet another hackish global numberspace for
   the ACPI GPIOs, which is a big win.
 
 - The RFkill GPIO driver and all platforms using it have
   been migrated to use the GPIO descriptors rather than
   fixed number assignments. Tegra machine has been migrated
   as part of this.
 
 - New drivers for MOXA ART, Xtensa GPIO32 and SMSC SCH311x.
   Those should be really good examples of how I expect a
   nice GPIO driver to look these days.
 
 - Do away with custom GPIO implementations on a major
   part of the ARM machines: ks8695, lpc32xx, mv78xx0.
   Make a first step towards the same in the horribly
   convoluted Samsung S3C include forest. We expect to
   continue to clean this up as we move forward.
 
 - Flag GPIO lines used for IRQ on adnp, bcm-kona, em,
   intel-mid and lynxpoint.
   This makes the GPIOlib core aware that a certain GPIO line
   is used for IRQs and can then enforce some semantics such
   as disallowing a GPIO line marked as in use for IRQ to be
   switched to output mode.
 
 - Drop all use of irq_set_chip_and_handler_name().
   The name provided in these cases were just unhelpful
   tags like "mux" or "demux".
 
 - Extend the MCP23s08 driver to handle interrupts.
 
 - Minor incremental improvements for rcar, lynxpoint, em
   74x164 and msm drivers.
 
 - Some non-urgent bug fixes here and there, duplicate
   #includes and that usual kind of cleanups.
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Merge tag 'gpio-v3.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO tree bulk changes from Linus Walleij:
 "A big set this merge window, as we have much going on in this
  subsystem.  The changes to other subsystems (notably a slew of ARM
  machines as I am doing away with their custom APIs) have all been
  ACKed to the extent possible.

  Major changes this time:

   - Some core improvements and cleanups to the new GPIO descriptor API.
     This seems to be working now so we can start the exodus to this
     API, moving gradually away from the global GPIO numberspace.

   - Incremental improvements to the ACPI GPIO core, and move the few
     GPIO ACPI clients we have to the GPIO descriptor API right *now*
     before we go any further.  We actually managed to contain this
     *before* we started to litter the kernel with yet another hackish
     global numberspace for the ACPI GPIOs, which is a big win.

   - The RFkill GPIO driver and all platforms using it have been
     migrated to use the GPIO descriptors rather than fixed number
     assignments.  Tegra machine has been migrated as part of this.

   - New drivers for MOXA ART, Xtensa GPIO32 and SMSC SCH311x.  Those
     should be really good examples of how I expect a nice GPIO driver
     to look these days.

   - Do away with custom GPIO implementations on a major part of the ARM
     machines: ks8695, lpc32xx, mv78xx0.  Make a first step towards the
     same in the horribly convoluted Samsung S3C include forest.  We
     expect to continue to clean this up as we move forward.

   - Flag GPIO lines used for IRQ on adnp, bcm-kona, em, intel-mid and
     lynxpoint.

     This makes the GPIOlib core aware that a certain GPIO line is used
     for IRQs and can then enforce some semantics such as disallowing a
     GPIO line marked as in use for IRQ to be switched to output mode.

   - Drop all use of irq_set_chip_and_handler_name().  The name provided
     in these cases were just unhelpful tags like "mux" or "demux".

   - Extend the MCP23s08 driver to handle interrupts.

   - Minor incremental improvements for rcar, lynxpoint, em 74x164 and
     msm drivers.

   - Some non-urgent bug fixes here and there, duplicate #includes and
     that usual kind of cleanups"

Fix up broken Kconfig file manually to make this all compile.

* tag 'gpio-v3.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (71 commits)
  gpio: mcp23s08: fix casting caused build warning
  gpio: mcp23s08: depend on OF_GPIO
  gpio: mcp23s08: Add irq functionality for i2c chips
  ARM: S5P[v210|c100|64x0]: Fix build error
  gpio: pxa: clamp gpio get value to [0,1]
  ARM: s3c24xx: explicit dependency on <plat/gpio-cfg.h>
  ARM: S3C[24|64]xx: move includes back under <mach/> scope
  Documentation / ACPI: update to GPIO descriptor API
  gpio / ACPI: get rid of acpi_gpio.h
  gpio / ACPI: register to ACPI events automatically
  mmc: sdhci-acpi: convert to use GPIO descriptor API
  ARM: s3c24xx: fix build error
  gpio: f7188x: set can_sleep attribute
  gpio: samsung: Update documentation
  gpio: samsung: Remove hardware.h inclusion
  gpio: xtensa: depend on HAVE_XTENSA_GPIO32
  gpio: clps711x: Enable driver compilation with COMPILE_TEST
  gpio: clps711x: Use of_match_ptr()
  net: rfkill: gpio: convert to descriptor-based GPIO interface
  leds: s3c24xx: Fix build failure
  ...
2014-01-21 10:09:12 -08:00
Linus Torvalds
02d0a75246 Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
 "For 3.14, the I2C subsystem has the following to offer:

   - new drivers for Renesas RIIC and RobotFuzz OSIF
   - driver cleanups & improvements & bugfixes

  Pretty standard stuff this time, I'd say.  There is more complex stuff
  coming up, but I didn't have the bandwidth between the years to pull
  it in for this release.  Sadly"

* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (26 commits)
  i2c: s3c2410: fix quirk usage for 64-bit
  i2c: pnx: Use devm_*() functions
  i2c: at91: add a new compatibility string for the at91sam9261
  i2c-ismt: support I2C_SMBUS_I2C_BLOCK_DATA transaction type
  i2c: Add bus driver for for OSIF USB i2c device.
  i2c: i2c-tiny-usb: Remove RobotFuzz USB vendor:product ID
  i2c: designware: remove HAVE_CLK build dependecy
  Documentation: i2c: Remove obsolete example
  i2c: nomadik: remove platform data header
  i2c: nomadik: auto-calculate slave setup time
  i2c: viperboard: remove superfluous assignment
  i2c: xilinx: Use devm_* functions
  i2c: xilinx: Do not enable irq before irq handler
  i2c: xilinx: Fix i2c checkpatch warnings
  i2c: at91: document clock properties
  i2c: isch: Use devm_request_region()
  i2c: viperboard: Use devm_kzalloc() functions
  i2c: imx: propagate irq error code in probe
  i2c: s3c2410: dont need CPU_FREQ transitions for exynos series
  i2c: s3c2410: Add polling mode support
  ...
2014-01-21 09:39:37 -08:00
Linus Torvalds
fb2e2c8537 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security layer updates from James Morris:
 "Changes for this kernel include maintenance updates for Smack, SELinux
  (and several networking fixes), IMA and TPM"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (39 commits)
  SELinux: Fix memory leak upon loading policy
  tpm/tpm-sysfs: active_show() can be static
  tpm: tpm_tis: Fix compile problems with CONFIG_PM_SLEEP/CONFIG_PNP
  tpm: Make tpm-dev allocate a per-file structure
  tpm: Use the ops structure instead of a copy in tpm_vendor_specific
  tpm: Create a tpm_class_ops structure and use it in the drivers
  tpm: Pull all driver sysfs code into tpm-sysfs.c
  tpm: Move sysfs functions from tpm-interface to tpm-sysfs
  tpm: Pull everything related to /dev/tpmX into tpm-dev.c
  char: tpm: nuvoton: remove unused variable
  tpm: MAINTAINERS: Cleanup TPM Maintainers file
  tpm/tpm_i2c_atmel: fix coccinelle warnings
  tpm/tpm_ibmvtpm: fix unreachable code warning (smatch warning)
  tpm/tpm_i2c_stm_st33: Check return code of get_burstcount
  tpm/tpm_ppi: Check return value of acpi_get_name
  tpm/tpm_ppi: Do not compare strcmp(a,b) == -1
  ima: remove unneeded size_limit argument from ima_eventdigest_init_common()
  ima: update IMA-templates.txt documentation
  ima: pass HASH_ALGO__LAST as hash algo in ima_eventdigest_init()
  ima: change the default hash algorithm to SHA1 in ima_eventdigest_ng_init()
  ...
2014-01-21 09:06:02 -08:00
Charles Keepax
02915661db mfd: wm5110: Add register patch for rev D chip
Evaluation of revision D of WM5110 suggests updates to the register
patch for optimal performance. For the sake of clarity rev C of the chip
does not require a register patch.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:29:02 +00:00
Roger Quadros
76a0775d46 mfd: omap-usb-tll: Don't hold lock during pm_runtime_get/put_sync()
pm_runtime_get/put_sync() can sleep so don't hold spinlock while
calling them.

This patch prevents a BUG() during system suspend when
CONFIG_DEBUG_ATOMIC_SLEEP is enabled.

Bug is present in Kernel versions v3.9 onwards.

Reported-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:29:01 +00:00
Sachin Kamat
3b1ba0cbcc gpio: lp3943: Remove redundant of_match_ptr helper
'lp3943_gpio_of_match' is always compiled in. Hence the
helper macro is not needed.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:29:00 +00:00
Julia Lawall
4d1d99807a mfd: sta2x11-mfd: Use named constants for pci_power_t values
If nothing more than to improve code readability.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression pdev;
@@

pci_set_power_state(pdev,
- 0
+ PCI_D0
 )
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:29:00 +00:00
Sachin Kamat
94100e7b5e Documentation: mfd: Fix LDO index in s2mps11.txt
LDO indices start from 1. Fix the example appropriately.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:59 +00:00
Sachin Kamat
7ff6d7a017 mfd: Cleanup mfd-mcp-sa11x0.h header
Commit a1fd844c6e ("ARM: sa1100: move platform_data definitions")
moved the file to the current location but forgot to remove the pointer
to its previous location. Clean it up. While at it also change the header
file protection macros appropriately.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:59 +00:00
Manish Badarkhe
01c3f110f3 mfd: max8997: Use "IS_ENABLED(CONFIG_OF)" for DT code.
Instead of "#if define CONFIG_OF" use "IS_ENABLED(CONFIG_OF)"
option for DT code to avoid if-deffery in code.

Signed-off-by: Manish Badarkhe <badarkhe.manish@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:58 +00:00
Danke Xie
754fa7bc98 mfd: twl6030: Fix endianness problem in IRQ handler
The current TWL 6030 IRQ handler assumes little endianness.
This change makes it endian-neutral.

Signed-off-by: Danke Xie <d.xie@sta.samsung.com>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:57 +00:00
Tushar Behera
39fed00f0b mfd: sec-core: Add cells for S5M8767-clocks
S5M8767 chip has 3 crystal oscillators running at 32KHz. These are
supported by s2mps11-clk driver.

Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:57 +00:00
Sachin Kamat
ae679c12e8 mfd: max14577: Remove redundant of_match_ptr helper
'max14577_dt_match' is always compiled in. Hence the helper macro
is not needed.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:56 +00:00
Wei Yongjun
adc01fbd90 mfd: twl6040: Fix sparse non static symbol warning
Fixes the following sparse warning:

drivers/mfd/twl6040.c:89:20: warning:
 symbol 'twl6040_patch' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:56 +00:00
Lee Jones
60a4992aae mfd: Revert "mfd: Always assign of_node in mfd_add_device()"
This reverts commit 68044bee13770918e0b28dd44aa98c889ec7558f.

We've had confirmed reports of this patch causing unforeseen issues
with existing MFD users. It has been agreed by the original author
and myself that reversion is the best solution.

Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:14 +00:00
Wei Yongjun
b5167bc466 mfd: rtsx: Fix sparse non static symbol warning
Fixes the following sparse warning:

drivers/mfd/rtl8411.c:473:6: warning:
 symbol 'rtl8411_init_common_params' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:14 +00:00
Krzysztof Kozlowski
75ad13278c mfd: max77693: Set proper maximum register for MUIC regmap
The MUIC block in max77693 has different I2C address than PMIC. The
driver allocated two regmaps: for PMIC and MUIC. However it used the
same regmap_config (with max_register field) for both regmaps. Actual
maximum address of register for MUIC is different than for PMIC.

Define another regmap_config for MUIC with proper max_register value.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:13 +00:00
Krzysztof Kozlowski
74142ffc0b mfd: max77686: Fix regmap resource leak on driver remove
The regmap used by max77686 MFD driver was not freed with regmap_exit()
on driver exit. This lead to leak of resources.

Replace regmap_init_i2c() call in driver probe with initialization of
managed register map so the regmap will be properly freed by the device
management code.

Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:13 +00:00
Laszlo Papp
f876a975a0 mfd: Represent correct filenames in file headers
The original author(s) probably copy/pasted these headers from the
existing public header files.

Signed-off-by: Laszlo Papp <lpapp@kde.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:12 +00:00
Micky Ching
56cb3cc187 mfd: rtsx: Add support for card reader rtl8402
rtl8402 is much like rtl8411, so just add it to rtl8411.c

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:11 +00:00
Micky Ching
0da14eeba2 mfd: rtsx: Add set pull control macro and simplify rtl8411
Add set pull control macro to reduce code for setting pull control, and
use a common init function to reduce code for rtl8411.c. So this patch
is used to just simplify code.

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:11 +00:00
Laszlo Papp
c1ec8fc308 mfd: max8997: Enforce mfd_add_devices() return value check
The original author provided a random return value check which is
redundant and seemingly floating. This patch not only relocates
the check so it is more clearly associated with the invokation of
mfd_add_devices(), but provides a store for the error value. We
also print a meaningful message on error before returning.

Signed-off-by: Laszlo Papp <lpapp@kde.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:10 +00:00
Alexander Shiyan
db9ef449aa mfd: mc13xxx: Simplify probe() & remove()
This patch simplifies probe() and remove() functions by moving
some initialisation code out from the I2C/SPI init() and exit()
functions and into the core driver.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:10 +00:00
Alexander Shiyan
e5a3da2143 mfd: mc13xxx: Remove useless symbol MFD_MC13783
Symbol MFD_MC13783 always selected by MFD_MC13XXX, so no need
to keep additional symbol.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:09 +00:00
Alexander Shiyan
03b1e3023b mfd: mc13xxx: Remove duplicate mc13xxx_get_flags() declaration
mc13xxx_get_flags() declaration given twice.
This patch removes this duplicate.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:09 +00:00
Stephen Boyd
12eda2a2e6 mfd: ssbi: Mark match table const
This is a read-only data structure.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:08 +00:00
Stephen Boyd
5eec14ccf9 mfd: ssbi: Constify buffer in ssbi_write
In preparation for passing a const pointer directly to
ssbi_write() from the regmap APIs.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:07 +00:00
Stephen Boyd
bae911a055 mfd: ssbi: Remove platform data structs and hide ssbi type enum
The ssbi driver assumes that the device is DT based. Remove the
platform data structs that will never be used and hide the enum
in the only C file that uses it.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:07 +00:00
Stephen Warren
a7c42b2545 mfd: Always assign of_node in mfd_add_device()
mfd_add_device() assigns .of_node in the device objects it creates only
if the mfd_cell for the device has the .of_compatible field set and the
DT node for the top-level MFD device contains a child whose compatible
property matches the cell's .of_compatible field.

This leaves .of_node unset in many cases. When this happens, entries in
the DT /aliases property which refer to the top-level MFD DT node will
never match the MFD child devices, hence causing the requested alias not
to be honored.

Solve this by setting each MFD child device's .of_node equal to the top-
level MFD device's .of_node field in the cases where it would otherwise
remain unset.

The first use-case for this will be aliases for the TPS6586x's RTC
device.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:06 +00:00
Rhyland Klein
01e73c89cf mfd: cros ec: spi: Add delay for raising CS
The EC has specific timing it requires. Add support for an optional delay
after raising CS to fix timing issues. This is configurable based on
a DT property "google,cros-ec-spi-msg-delay".

If this property isn't set, then no delay will be added. However, if set
it will cause a delay equal to the value passed to it to be inserted at
the end of a transaction.

Signed-off-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Bernie Thompson <bhthompson@chromium.org>
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:06 +00:00
Thierry Reding
daf93d2287 mfd: cros ec: spi: Use 0 instead of '\0' consistently
memset() was being called with the second parameter set to '\0', which
is equivalent but longer than the more canonical 0. Update the code to
use the latter variant consistently across the driver.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:05 +00:00
Thierry Reding
fcfccdb22f mfd: cros ec: spi: Depend on OF
The driver is not used on any non-DT platform, so it can depend on the
OF Kconfig symbol to make that explicit. This is in preparation of a
subsequent patch which parses some parameters from the device tree and
would otherwise have to conditionalize that code.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:04 +00:00
Thierry Reding
ea0f8b0b67 mfd: cros ec: spi: Use correct module license
According to the header comment in the source file the driver is
licensed under GPL v2, so update MODULE_LICENSE() to match that.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:04 +00:00
Wei Yongjun
005718c08b mfd: sec-core: Fix sparse NULL pointer warning
Fixes the following sparse warning:

drivers/mfd/sec-core.c:202:16: warning: Using plain integer as NULL pointer

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:03 +00:00
Wei Yongjun
ec9e4ba67e mfd: sta2x11-mfd: Fix return value check in sta2x11_mfd_platform_probe()
In case of error, the function devm_regmap_init_mmio() returns
ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:03 +00:00
Alexander Shiyan
328fe79cac mfd: mc13xxx: Remove redundant checks
Checking for maximal register is already provided by regmap API,
so remove redundant checks.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:02 +00:00
Stefan Agner
844a4f0d8a regulator: tps6586x: Add and use correct voltage table
Depending on the regulator version, the voltage table might be
different. Use version specific regulator tables in order to select
correct voltage table. For the following regulator versions different
voltage tables are now used:

  * TPS658623: Use correct voltage table for SM2
  * TPS658643: New voltage table for SM2

Both versions are in use on the Colibri T20 module. Make use of the
correct tables by requesting the correct SM2 voltage of 1.8V.

This change is not backward compatible since an old driver is not able
to correctly set that value. The value 1.8V is out of range for the old
driver and will refuse to probe the device. The regulator starts with
default settings and the driver shows appropriate error messages.

On Colibri T20, the old value used to work with TPS658623 since the
driver applied a wrong voltage table too. However, the TPS658643 used
on V1.2 devices uses yet another voltage table and those broke that
pseudo-compatibility. The regulator driver now has the correct voltage
table for both regulator versions and those the correct voltage can be
used in the device tree.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:01 +00:00
Stefan Agner
e0a3da80c6 mfd: tps6586x: Add version detection
Use the VERSIONCRC to determine the exact device version. According to
the datasheet this register can be used as device identifier. The
identification is needed since some tps6586x regulators use a different
voltage table.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:01 +00:00
Milo Kim
af66b3c093 pwm: Add LP3943 PWM driver
This is the other of the LP3943 MFD driver.
LP3943 can be used as a PWM generator, up to 2 channels.

* Two PWM generators supported

* Supported PWM operations
  request, free, config, enable and disable

* Pin assignment
  A driver data, 'pin_used' is checked when a PWM is requested.
  If the output pin is already assigned, then returns as failure.
  If the pin is available, 'pin_used' is set.
  When the PWM is not used anymore, then it is cleared.
  It is defined as unsigned long type for atomic bit operation APIs,
  but only LSB 16bits are used because LP3943 has 16 outputs.

Signed-off-by: Milo Kim <milo.kim@ti.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:28:00 +00:00
Milo Kim
470eca47bd mfd: Add LP3943 MFD driver
LP3943 has 16 output pins which can be used as GPIO expander and PWM generator.

* Regmap I2C interface for R/W LP3943 registers

* Atomic operations for output pin assignment
  The driver should check whether requested pin is available or not.
  If the pin is already used, pin request returns as a failure.
  A driver data, 'pin_used' is checked when gpio_request() and
  pwm_request() are called. If the pin is available, then pin_used is set.
  And it is cleared when gpio_free() and pwm_free().

* Device tree support
  Compatible strings for GPIO and PWM driver.
  LP3943 platform data is PWM related, so parsing the device tree is
  implemented in the PWM driver.

Signed-off-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:59 +00:00
Milo Kim
0cc59b9d98 gpio: add LP3943 I2C GPIO expander driver
This is one of LP3943 MFD driver.
LP3943 is configurable as a GPIO expander, up to 16 GPIOs.

* Application note: how to configure LP3943 as a GPIO expander
  http://www.ti.com/lit/an/snva287a/snva287a.pdf

* Supported GPIO controller operations
  request, free, direction_input, direction_output, get and set

* GPIO direction register not supported
  LP3943 doesn't have the GPIO direction register. It only provides input and
  output status registers.
  So, private data for the direction should be handled manually.
  This variable is updated whenever the direction is changed and
  used in 'get' operation.

* Pin assignment
  A driver data, 'pin_used' is checked when a GPIO is requested.
  If the GPIO is already assigned, then returns as failure.
  If the GPIO is available, 'pin_used' is set.
  When the GPIO is not used anymore, then it is cleared.
  It is defined as unsigned long type for atomic bit operation APIs,
  but only LSB 16bits are used because LP3943 has 16 outputs.

Signed-off-by: Milo Kim <milo.kim@ti.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:57 +00:00
Milo Kim
25a7a6f4a2 Documentation: Add LP3943 DT bindings and document
Bindings for LP3943 MFD, GPIO and PWM controller are added.

Signed-off-by: Milo Kim <milo.kim@ti.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:55 +00:00
Dan Carpenter
aab5dc6803 mfd: max14577: Cleanup an error message
"pdata" is a NULL not an ERR_PTR so there is no use printing it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:53 +00:00
Mark Brown
b9736a16a4 mfd: wm831x: Use PM ops for shutdown
This helps move us towards removing the bus custom operations.

Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:51 +00:00
Linus Walleij
ed83d301ea mfd: ab8500: Use irqdomain to map interrupts
All subdrivers use the irqdomain to demux AB8500 IRQs but here
in the hierarchical path we find a leftover instance using the
hard-coded IRQ base. Convert it to use irqdomain with a
oneliner.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:49 +00:00
Lee Jones
4db5923890 mfd: rtsx: Prevent 'used uninitialised' warnings
drivers/mfd/rtl8411.c: In function 'rtl8411_fetch_vendor_settings':
drivers/mfd/rtl8411.c:58:7: warning: 'reg1' is used uninitialized in this function [-Wuninitialized]
drivers/mfd/rtl8411.c: In function 'rtl8411b_fetch_vendor_settings':
drivers/mfd/rtl8411.c:79:7: warning: 'reg' is used uninitialized in this function [-Wuninitialized]
drivers/mfd/rtl8411.c: In function 'rtl8411_fetch_vendor_settings':
drivers/mfd/rtl8411.c:69:26: warning: 'reg3' may be used uninitialized in this function [-Wuninitialized]

Tested-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:47 +00:00
Jingoo Han
36fcd06c46 mfd: Remove DEFINE_PCI_DEVICE_TABLE macro
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro
is not preferred.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:45 +00:00
Linus Walleij
97b583f3b4 mfd/pinctrl: Delete platform data header
This deletes the special AB8500 GPIO platform data passing
header and merges the few remaining contents down into the
abx500 pinctrl driver which handles the abx500 GPIO device.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:42 +00:00
Linus Walleij
45e8422356 mfd: ab8500: Delete all GPIO platform data instances
This deletes all instances where the AB8500 GPIO platform
data is passed around. It is completely unused in the kernel
now, so it does not hurt anyone.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21 08:27:40 +00:00
Lee Jones
28b4c2948f Immutable branch for IIO and Input
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Merge tag 'ib-iio-input-3.13-1' into for-mfd-next

Immutable branch for IIO and Input
2014-01-21 08:26:55 +00:00