Commit Graph

287843 Commits

Author SHA1 Message Date
Benoit Cousson 2d9dd99b44 gpio/twl: Allocate irq_desc dynamically for SPARSE_IRQ support
Do not use the board pdata for irq_base, but allocate them dynamically
to allow a proper support of SPARSE_IRQ.

Fix an unneeded line wrap.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:05:53 +01:00
Peter Ujfalusi 364cedb2f9 mfd: Detach twl6040 from the pmic mfd driver
On OMAP4 platform audio has separate IC, it is no longer part
of the pmic chip.
Prevent twl-core to claim the 0x4b address, which belongs to
the twl6040 audio IC.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:05:49 +01:00
Benoit Cousson ec1a07b344 mfd: Replace twl-* pr_ macros by the dev_ equivalent and do various cleanups
Since a structure device is available now, use the dev_ macros instead
of the pr_ ones.

Clean some badly formatted comments.
Remove some unused variables.
Move some variable to the place they belong.
Clean some badly wrapped lines.
Align variable definition
Add missing braces in if-then-else block.
Add blank line for better readability.
Move stuff here and there...

Conflicts:

	drivers/mfd/twl-core.c

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:05:34 +01:00
Felipe Balbi 5a903090e7 mfd: Micro-optimization on twl4030 IRQ handler
__ffs() will be far faster than the for loop used.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:05:11 +01:00
Benoit Cousson f01b1f90bf mfd: Make twl4030 SIH SPARSE_IRQ capable
twl4030 is using a two level irq controllers infrastruture.
So far, only the first level was using dynamic irq_desc allocation
to be able to have irq_domain support for device tree.
There is a need to allocate separate irq_descs for the SIH too to
avoid hacking the first level with interrupts from the second level.

Add an irq_base parameter to allow the caller to provide the base from
pdata or from dynamic allocation.

Affect TWL4030_NR_IRQS to the twl-core IRQs only.

Moreover that will allow the extraction of the of_node pointer for further
Device Tree conversion.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:04:54 +01:00
Benoit Cousson 78518ffa08 mfd: Move twl-core IRQ allocation into twl[4030|6030]-irq files
During DT adaptation, the irq_alloc_desc was added into twl-core, but
due to the rather different and weird IRQ management required by the twl4030,
it is much better to have a different approach for it.
The issue is that twl4030 uses a two level IRQ mechanism but handles all the
PWR interrupts as part of the twl-core interrupt range. It ends up with a
range of 16 interrupts total for CORE and PWR.

The other twl4030 functionalities already have a dedicated driver and thus
their IRQs and irqdomain can and should be defined localy.

twl6030 is using a single level IRQ controller and thus does not require any
trick.

Move the irq_alloc_desc and irq_domain_add_legacy in twl4030-irq and
twl6030-irq.

Allocate together CORE and PWR IRQs for twl4030-irq.

Conflicts:

        drivers/mfd/twl-core.c

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:04:33 +01:00
Benoit Cousson 1b8f333ff4 mfd: Remove references already defineid in header file from twl-core
The twl-core exported functions are already declared in twl-core.h

Include the header file instead or re-declaring the functions.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:04:19 +01:00
Felipe Balbi 5fd32d6a3a mfd: Remove unneeded header from twl-core
This driver doesn't really need <plat/cpu.h>, so remove it.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:03:34 +01:00
Felipe Balbi 9e17862027 mfd: Make twl-core not depend on pdata->irq_base/end
With sparse IRQs the driver shouldn't depend at all on
any IRQ values coming from board-file.

Remove every occurences of pdata->irq_base/end.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:03:17 +01:00
Benoit Cousson 9d4a4199e7 ARM: OMAP2+: board-omap4-*: Do not use anymore TWL6030_IRQ_BASE in board files
With the introduction of dynamically allocated IRQ in the twl6030 driver,
the board files can no longer rely of static IRQ defines like before.

Retrieve the value dynamically allocated from the mmc -> twl6030 init
callback.

Note: The Panda board does not seems to use the card detect IRQ.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:02:51 +01:00
Benoit Cousson bdd61bc667 mfd: Return twl6030_mmc_card_detect IRQ for board setup
Card detect IRQ from the TWL6030 used to be provided to the MMC
controller code using a statically allocated IRQ scheme:

  card_detect_irq = TWL6030_IRQ_BASE + MMCDETECT_INTR_OFFSET;

This is no longer valid in a SPARSE_IRQ context since there is no more
pre-defined TWL6030_IRQ_BASE.

Return the proper card detect IRQ value in the twl6030_mmc_card_detect_config
that will be called from the MMC controller.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-22 13:02:48 +01:00
Samuel Ortiz fd7cdddf9f Revert "mfd: Add platform data for MAX8997 haptic driver"
This reverts commit 02b09703e7.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-21 21:39:18 +01:00
Venu Byravarasu 3c33be06f9 mfd: Add support for TPS65090
TPS65090 is a Texas Instrument PMIC. It contains 3 Step-Down converters, 2
always on LDO's and  7 current limited load switches.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-20 16:56:33 +01:00
Dmitry Torokhov bcc2d6d6fc mfd: Add some da9052-i2c section annotations
da9052_i2c_remove() can and should be marked as __devexit.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-20 16:38:14 +01:00
Laxman Dewangan 5364d0b864 mfd: Build rtc5t583 only if I2C config is selected to y.
Fixing build error reported by Stephen Rothwell:

drivers/built-in.o: In function `rc5t583_i2c_init':
rc5t583.c:(.init.text+0xb3db): undefined reference to `i2c_register_driver'
drivers/built-in.o: In function `rc5t583_i2c_probe':
rc5t583.c:(.devinit.text+0x8fa0): undefined reference to `regmap_init_i2c'
drivers/built-in.o: In function `rc5t583_i2c_exit':
rc5t583.c:(.exit.text+0x708): undefined reference to `i2c_del_driver'

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-20 13:49:45 +01:00
Ying-Chun Liu (PaulLiu) 75060a1d9d mfd: Add anatop mfd driver
Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Venu Byravarasu <vbyravarasu@nvidia.com>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Rob Lee <rob.lee@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 21:12:32 +01:00
Venu Byravarasu 095e7f780b mfd: Fix compilation error in tps65910.h
'struct gpio_chip' is declared in include/asm-generic/gpio.h
which is included by include/linux/gpio.h.
However without including gpio.h, TPS65910.h declares
a member of this type as part of 'struct tps65910' declaration.

This causes compilation error, if gpio.h is not included
before including tps65910.h, in source files.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 21:02:09 +01:00
Bengt Jonsson 1927ddf668 mfd: Add 8420 variant to db8500-prcmu
Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 20:59:19 +01:00
Bengt Jonsson 5f96a1a6d5 mfd: Add 8520 PRCMU variant to db8500-prcmu
Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Reviewed-by: Mattias Nilssson <mattias.i.nilsson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 20:59:01 +01:00
Mattias Nilsson d902d0d18c mfd: Remove obsolete hwacc implementation for db8500-prmcu
This patch removes the obsolete hwacc implementation in the
DB8500 PRCMU driver.

Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 20:58:39 +01:00
Axel Lin 829ecbcb14 mfd: Use DIV_ROUND_CLOSEST for sm501 clock
Use DIV_ROUND_CLOSEST to replace sm501fb_round_div function.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 20:37:47 +01:00
Laxman Dewangan 1b1247dd75 mfd: Add support for RICOH PMIC RC5T583
Ricoh power management IC  RC5T583 contains is multi
functional device having multiple sub devices inside this.
This device has multiple dcdc/ldo regulators, gpios, interrupt
controllers, on-key, RTCs, ADCs.
This device have 4 DCDCs, 8 LDOs, 8 GPIOs, 6 ADCs, 3 RTCs etc.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 20:05:45 +01:00
Mattias Nilsson bc628fd19d mfd: Make use of the ab8500 firmware read-modify-write service
This patch updates the AB8500 driver to make use of the I2C
read-modify-write service in the PRCMU firmware.

Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 19:45:33 +01:00
Mattias Nilsson 3c3e489831 mfd: Add a prcmu_abb_write_masked routine to db8500-prcmu
This patch adds driver support for the I2C read-modify-write
service in the U8500 PRCMU firmware.

Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 19:45:08 +01:00
Bengt Jonsson a982362c17 mfd: Support for the AB8500 AB8505 variant
This builds upon the changes done to support AB9540 so as
also to support the AB8505 derivative of the AB8500
circuit.

Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 19:44:20 +01:00
Rabin Vincent 392cbd1e60 mfd: Don't use mutex_lock_interruptible in ab8500-core
This disadvantage of having it interruptible is that it would
appear to work OK in most situations, but in the rare case
that this call does fail, it can lead to misconfiguration
of the AB, such as a regulator not being turned off and
leading to a platform power consumption increase.

There's no real benefit to having this interruptible.

Make it a plain mutex_lock. The non-interruptability matches
other low-level I/O functions such as SPI and I2C.

Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 19:43:36 +01:00
Mark Brown bd155d2c3c ARM: S3C64XX: Hook up supply for WM8994 LDOs on Littlemill
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 19:37:15 +01:00
Mark Brown 719a42402b mfd: Remove unused LDO supply field from WM8994 pdata
It's causing confusion with the regulator level field of the same name
and serves no useful function.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 19:36:29 +01:00
Laxman Dewangan 39ecb03765 mfd: Use correct variable name for tps65910 regmap config
This was the copy-paste issue in reg cache support code where
variable name for regmap config was not really starting from
the device name, it was starting from some other device name.
Fixing this so that variable name contains actual device name.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 18:50:51 +01:00
Chanwoo Choi 02b09703e7 mfd: Add platform data for MAX8997 haptic driver
MAX8997 device does not support haptic function of it.
This patch adds platform data for for MAX8997 haptic driver.

Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 18:41:17 +01:00
Mark Brown 618dd15d21 mfd: wm8994: Fix register default for WM1811 AntiPOP2
Should be all bits clear.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 17:44:51 +01:00
Mark Brown 9f9efcd526 mfd: wm8994: Remove defaults for volatile registers
Some volatile registers accidentally had defaults added, though there were
no harmful side effects other than increased memory consumption.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-16 17:44:51 +01:00
Samuel Ortiz 2f5f89be6f mfd: Fix pm8606 build failure
Reported by Andrew Morton <akpm@linux-foundation.org>, with
i386 allmodconfig:

ERROR: "pm8606_osc_disable" [drivers/video/backlight/88pm860x_bl.ko] undefined!
ERROR: "pm8606_osc_enable" [drivers/video/backlight/88pm860x_bl.ko] undefined!
ERROR: "pm8606_osc_disable" [drivers/leds/leds-88pm860x.ko] undefined!
ERROR: "pm8606_osc_enable" [drivers/leds/leds-88pm860x.ko] undefined!

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:57 +01:00
Axel Lin 5a924d13ec mfd: Fix a typo in MFD_MAX8997 Kconfig entry
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:57 +01:00
Daniel Lezcano 34fe6f107e mfd : Check if the other db8500 core is in WFI
This patch allows to check if the other core is in WFI
mode. It is the last check the idle routine has to do before
entering into the retention state.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:56 +01:00
Daniel Lezcano 9ab492e12d mfd : Check if the db8500 prcmu has pending irq
This patch allows to check if there are some pending irqs
on the prcmu.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:56 +01:00
Daniel Lezcano 9f60d33e18 mfd : Copy the db8500 gic setting to the prcmu
In the case we go to the retention mode, we decoupled the gic
in order to have the A9 core to reach a stable WFI state.
But we want the prcmu to wake up the A9 when the gic has a pending
irq which is done by copying the gic settings to the to the prcmu.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:55 +01:00
Daniel Lezcano cc9a0f68d1 mfd : Check if there are pending irq on the db8500 gic
This patch introduces a routine to check if there are some
irqs pending on the gic. Usually this check is not relevant because
it appears racy (an irq can arrive right after this check), but in
the ux500 it makes sense because the prcmu decouples the gic from
the A9 cores.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:55 +01:00
Daniel Lezcano 801448e067 mfd : Cleanup duplicate db8500 definitions
I missed in my previous patch the A9_MASK_REQ[_MASK] were
already defined. Let's remove the duplicate definitions.

The PRCMU_GIC_DELAY macro could be removed as it is not
really useful here.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:54 +01:00
Axel Lin 61a2af301f mfd: Return proper error if s5m-core regmap_init_i2c fails
Also remove a redundant semicolon from return statement.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:54 +01:00
Jett.Zhou b3b97473ee led: Modified power control of pm860x led
Since several sub modules such as backlight, leds and vibrator depend
on the refernce group and internal oscillator in pm8606, so modified
the power control of led in pm8606 by unified interface.

Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:53 +01:00
Jett.Zhou 1efc15812d backlight: Modified power control of pm860x backlight
Since several sub modules such as backlight, leds and vibrator depend
on the refernce group and internal oscillator in pm8606, so modified
the power control of backlight in pm8606 by unified interface.

Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:53 +01:00
Jett.Zhou 7825806474 mfd: Code cleanup for pm8606 sub-dev initialization
Collect all the sub-devices of pm8606 initialization into
device_pm8606_init() for code clean up.

Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:52 +01:00
Jett.Zhou 23de435a59 mfd: Add power control interface for pm8606 chip
The reference group and internal oscillator are shared by sub-devs
like led, backlight and vibrator in PM8606 chip. Now introduce a
voting mechanism to enable/disable it.

Add pm8606_osc_enable() and pm8606_osc_disable() interface and
related defines to support this. This interface will be called by
vibrator led and backlight driver.The refernce group and internal
oscillator are enabled only when at least one of it's clients holds
it on or disabled only all the clients don't use it any more based
on the above mechanism.

Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:52 +01:00
Hai Dong fe2afaa541 mfd: Fix wm831x-spi table id name typo in MODULE_DEVICE_TABLE macro
Signed-off-by: Hai Dong <hai.dong@polycom.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:52 +01:00
Axel Lin 624e26e020 mfd: Include linux/mfd/pcf50633/mbc.h in pcf50633-irq.c
Include linux/mfd/pcf50633/mbc.h instead of duplicating the same defines.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:51 +01:00
Axel Lin 7f849a39ee mfd: Include linux/mfd/pcf50633/pmic.h in pcf50633-gpio.c
Include linux/mfd/pcf50633/pmic.h instead of duplicating the same defines.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:51 +01:00
Mark Brown 378f64ec8a mfd: Correct readability of WM8994 DC servo 4E register
It should be marked as readable but wasn't, breaking DC servo operation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:50 +01:00
Laxman Dewangan dc9913a050 mfd: Use regmap for tps65910 register access.
Using regmap apis for accessing the device registers and
using RBTREE caching mechanims for caching registers.

Enabling caching of the registers which is used for voltage
controls. By doing this, the modify_bits operation is faster as
it does not involve the i2c register read from device, just read
from cache. This results faster set voltage operation.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:50 +01:00
Jett.Zhou 2853378b6e mfd: Add ability to wake the system for 88pm860x
For 88pm860x pmic, it can wake the system from low power mode by irq,
its sub-devs like RTC and onkey can be enabled for this usage.

Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-03-06 18:46:49 +01:00