Commit Graph

335480 Commits

Author SHA1 Message Date
Lars Poeschel
9d5b72de0d gpio: Add viperboard gpio driver
This adds the mfd cell to use the gpio a and gpio b part
of the Nano River Technologies viperboard.

Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:12 +01:00
Lars Poeschel
f01312d846 mfd: Add viperboard driver
Add mfd driver for Nano River Technologies viperboard.

Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:12 +01:00
Charles Keepax
b9fbb62eb6 mfd: Only unregister platform devices allocated by the mfd core
mfd_remove_devices would iterate over all devices sharing a parent with
an mfd device regardless of whether they were allocated by the mfd core
or not. This especially caused problems when the device structure was
not contained within a platform_device, because to_platform_device is
used on each device pointer.

This patch defines a device_type for mfd devices and checks this is
present from mfd_remove_devices_fn before processing the device.

Cc: stable@vger.kernel.org
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Tested-by: Peter Tyser <ptyser@xes-inc.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:12 +01:00
Fabio Estevam
d511b9c362 gpio: gpio-da9052: Convert to the new da9052 interrupt functions
Convert to the new da9052 interrupt functions, so that we can get rid of
irq_base references.

Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:11 +01:00
Fabio Estevam
4b5edf7887 power: da9052-battery: Convert to the new da9052 interrupt functions
Convert to the new da9052 interrupt functions, so that we can get rid of
irq_base references.

Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:11 +01:00
Fabio Estevam
21eed07d12 Input: da9052_onkey.c: Convert to the new da9052 interrupt functions.
Use the new da9052 irq functions and allow the driver to probe successfully.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: <linux-input@vger.kernel.org>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:11 +01:00
Fabio Estevam
8f520803d2 Input: da9052_tsi.c: Fix interrupt handling
Currently da9062_tsi does not probe and it fails as follows:

da9052 1-0048: Unable to determine device interrupts

Use the new da9052 irq functions and allow the driver to probe and operate
correctly.

Tested on mx53qsb board using 'evtest' tool.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: <linux-input@vger.kernel.org>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:11 +01:00
Fabio Estevam
8bad1abd63 mfd: da9052: Introduce da9052-irq.c
Create a da9052-irq.c file so that it can handle interrupt related functions.

This is useful for allowing the da9052 drivers to use such functions
when dealing with da9052 interrupts.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:10 +01:00
Fabio Estevam
ffe20b6854 mfd: da9052-core: Use regmap_irq_get_virq() and fix the probe
On a mx53qsb dt-kernel the da9052-core driver fails to probe as follows:

da9052 1-0048: DA9052 ADC IRQ failed ret=-22

The reason for the error was due to passing only the offset as the interrupt
number in request_threaded_irq() without da9052->irq_base.

The recommended approach though is to use regmap_get_virq() to acquire the
interrupt number and this allows to get rid of da9052->irq_base.

Fix it and allow the driver to probe successfully.

Also provide a few more error logs and change the irq string to "adc-irq", so
that it appears as a single word in 'cat /proc/interrupts'

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-20 12:21:10 +01:00
Laxman Dewangan
17143e38af mfd: tps65910: Pass irq_domain when adding mfd sub devices
When adding the sub device "tps65910-rtc", is it passed the
IO resource IRQ for the interrupt number. This interrupt needs
to map in the device irq domain. Pass the irq domain of device
in mfd_add_devices() so that proper irq mapping can be done when
adding the sub device RTC.

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>
2012-11-20 12:21:10 +01:00
Laxman Dewangan
4aab3fadad mfd: tps65910: Move interrupt implementation code to mfd file
In place of implementing the irq support in separate file,
moving implementation to main mfd file.
The irq files only contains the table and init steps only
and does not need extra file to have this only for this
purpose.

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>
2012-11-20 12:21:09 +01:00
Laxman Dewangan
43c1af0f48 mfd: tps65910: Use regmap irq framework for interrupt support
Implement irq support of tps65910 with regmap irq framework
in place of implementing locally.
This reduces the code size significantly and easy to maintain.

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>
2012-11-20 12:21:08 +01:00
Laxman Dewangan
10ecb80e8c mfd: tps65910: Initialize mfd devices after all initialization done
Add sub devices of tps65910 after all initialization like interrupt,
clock etc. is done. This will make sure that require data gets
initialized properly before sub devices probe's get called.

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>
2012-11-20 12:21:08 +01:00
Samuel Ortiz
7aae79fd88 regmap: Customisable lock functions
Allow maps to replace the lock function for integration with dynamic
 register accessability states.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJQqsx5AAoJELSic+t+oim9sckP/0qRe75K6Zb+XurzW1xh2jhg
 esI+C9vu/WrJmYN4zGnNytMr/i8v7jQYSFib4aSMcOLHUBYMkqiHlL1unW2lcNNA
 L8E/Dvp/aKCsFuVNb6XlSI0Bio1HtctL5wWOS1fltLp9oohdf6nMrdzs0ghwXUMA
 t0tzKYb9h7aLpbx2OLYdnw06/S9/9Myw+l5byrWJOFV8SGqFee7nchLrhNbDKTqZ
 4nU3r51SG7STWrEZgbFwhZloceZbEZj4d5g5TunAGj739K9AWLfREjp1T3XkU7iu
 a12rEUYhycLAXYTqunFLNKA+ggQH3nCSfZH7w8iyII63sWWOvSiEyomugbh12VpZ
 HjGaR2xhFD+T+LnjT7alKrGicZcofzWb+gXN7hn73kWSml8FDFlfdVX0YYnkRZwd
 1ToXQDs6nGJWVH7lxogoHIm55rzs2Y7QkuoOLVF6N+UTkxYrirwUt1ta5v0HXfDA
 BuYL5ybLw4qAPwV/Q/u29r84XUTeJtZq/DfBscDJZpEXryzoDDu7pOs/KkHX6IJ7
 fJbeGFaduQ5FI+RTWwY6WUqMC/qLQ/Ec9vwjiJEzxoNnWqc4kkELVWoohwjBYkqw
 rE4oUsT7Px2fS0KMbark3tNkt0uvPnYHn9G5olxPk0S2rC0NHrukSGwtEh5cLdqx
 htEX1m8hDfs7ZfweO6My
 =KWk0
 -----END PGP SIGNATURE-----

Merge tag 'lock' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into for-next

regmap: Customisable lock functions

Allow maps to replace the lock function for integration with dynamic
register accessability states.
2012-11-20 12:20:58 +01:00
Samuel Ortiz
ea2590e243 Merge tag 'topic/domain' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap into for-next 2012-11-20 12:20:47 +01:00
Laxman Dewangan
fe39f2f4dc mfd: Implement tps6586x gpio_to_irq
The TPS6586x adds the interrupt of this device using
linear mapping on irq domain.
Hence, implement gpio_to_irq to get the irq number
corresponding to TPS6586x GPIOs which is created
dynamically.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-13 20:02:15 +01:00
Laxman Dewangan
5b8b1fe2da mfd: Add irq io-resource for tps6586x rtc sub driver
Add IRQ IORESOURCE for rtc sub driver of this device.
The rtc driver can get the irq by calling platform_get_irq().

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>
2012-11-13 20:02:15 +01:00
Laxman Dewangan
605511a848 mfd: Convert tps6586x to irq_domain
Allocate the irq base if it base is not porvided i.e.
in case of device tree invocation of this driver.
Convert the tps6586x driver to irq domain, using a
legacy IRQ mapping if an irq_base is specified in
platform data or dynamically allocated and otherwise
using a linear mapping.

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>
2012-11-13 20:02:14 +01:00
Peter Ujfalusi
210afeecd4 mfd: twl6040: Rename the core driver
After the regmap_irq conversion there is no need to call the driver
as twl6040-core.c since there is only one c file remained.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-13 19:54:23 +01:00
Peter Ujfalusi
ab7edb149c mfd: twl6040: Convert to use regmap_irq
With regmap_irq it is possible to remove the twl6040-irq.c file and
simplify the code.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-13 19:54:23 +01:00
Peter Ujfalusi
1ac96265a6 mfd: twl6040: Correct Ready and Thermal interrupt handling
Create new irq handler for thermal events in order to be able to handle the
event and clean up the code regarding to interrupt handling:
Use proper function names for the irq handlers
No need to read the INTD register anymore.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-13 19:54:22 +01:00
Peter Ujfalusi
f9be134357 mfd: twl6040: Restructure power up and down code
Rearrange the code path for power up and down sequence.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-13 19:54:22 +01:00
Peter Ujfalusi
eae9a9c85b mfd: twl6040: Remove unused parameter for twl6040_power_up_completion()
naudint parameter has not been used, remove it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-13 19:54:21 +01:00
Peter Ujfalusi
a32415202f mfd: twl6040: Fix typo for power on failure
Fix old copy paste bug:
automatic power-down failed -> automatic power-up failed

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-13 19:54:21 +01:00
Geert Uytterhoeven
90a38d9997 mfd: Remove Unicode Byte Order Marks from da9055
Older gcc (< 4.4) doesn't like files starting with Unicode BOMs:

include/linux/mfd/da9055/core.h:1: error: stray ‘\357’ in program
include/linux/mfd/da9055/core.h:1: error: stray ‘\273’ in program
include/linux/mfd/da9055/core.h:1: error: stray ‘\277’ in program
include/linux/mfd/da9055/pdata.h:1: error: stray ‘\357’ in program
include/linux/mfd/da9055/pdata.h:1: error: stray ‘\273’ in program
include/linux/mfd/da9055/pdata.h:1: error: stray ‘\277’ in program
include/linux/mfd/da9055/reg.h:1: error: stray ‘\357’ in program
include/linux/mfd/da9055/reg.h:1: error: stray ‘\273’ in program
include/linux/mfd/da9055/reg.h:1: error: stray ‘\277’ in program

Remove the BOMs, the rest of the files is plain ASCII anyway.

Output of "file" before:

include/linux/mfd/da9055/core.h:  UTF-8 Unicode (with BOM) C program text
include/linux/mfd/da9055/pdata.h: UTF-8 Unicode (with BOM) C program text
include/linux/mfd/da9055/reg.h:   UTF-8 Unicode (with BOM) C program text

Output of "file" after:

include/linux/mfd/da9055/core.h:  ASCII C program text
include/linux/mfd/da9055/pdata.h: ASCII C program text
include/linux/mfd/da9055/reg.h:   ASCII C program text

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-12 00:54:57 +01:00
Lee Jones
b851c06c24 mfd: Differentiate between u8500 and u9540 TCDM address mapping
The TCDM mappings are quite different from u8500 to u9540. If these
aren't correctly specified for a given board, it will fail to boot.
Here we add the correct TCDM base for the u9540.

Please note that although this patch allows us to boot the u9540,
it doesn't provide us with full enablement. For that, another
patch-set will follow which completely re-vamps the way the PRCMU
is passed TCDM mappings.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-11 23:35:04 +01:00
Lee Jones
8c4203cb58 mfd: ab8500-core: Use devm_* memory/IRQ and allocation/free routines
It is better to use devm_* calls, as they allow for easier
and more automatic clean-up. Resources are device allocated,
so when a device is freed, so are all associated resources.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-11 23:35:04 +01:00
Lee Jones
84e6de813b Documentation: Describe bindings for STMPE Multi-Functional Device driver
Here we add the required documentation for the STMPE Multi-Functional
Device (MFD) Device Tree bindings. It describes all of the bindings
currently supported by the driver.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-11 23:35:04 +01:00
Lee Jones
909582caae mfd: Enable the STMPE MFD for Device Tree
This patch allows the STMPE Multi-Functional Device to be correctly
initialised when booting with Device Tree support enabled. Its
children are specified by the addition of subordinate devices to the
STMPE node in the Device Tree file.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-11 23:35:03 +01:00
Lee Jones
5204e51d30 mfd: Correct copy and paste mistake in stmpe
When specifying IRQ numbers for the stmpe1601, IRQ defines for the
stmpe24xx were used instead. Fortunately, the defined numbers are
the same, hence why it survived testing. This fix is merely an
aesthetic one.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-11 23:35:03 +01:00
Lee Jones
76f93992e4 mfd: Provide the STMPE driver with its own IRQ domain
The STMPE driver is yet another IRQ controller which requires its
own IRQ domain. So, we provide it with one.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-11 23:35:03 +01:00
Lee Jones
7da0cbfc54 mfd: Prevent STMPE from abusing mfd_add_devices' irq_base parameter
Originally IRQ incrementers were provided in some template resource
structures for keypad and touchscreen devices. These were passed as
IORESOURCE_IRQs to MFD core in the usual way. The true device IRQs
were instead added to the irq_base when mfd_add_devices was invoked.
This is clearly an abuse of the call, and does not scale when IRQ
Domains are brought into play. Before we can provide the STMPE with
its own IRQ Domain we must first fix this. This patche keeps most
of the driver's structure, keeping the template strategy. However,
instead of providing the IRQ as an increment to irq_base, we
dynamically populate the IORESOURCE_IRQ with the correct device IRQ.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-11 23:35:03 +01:00
Lee Jones
8ae754ebd5 mfd: ab8500-core: Remove unused ab8500-gpio IRQ ranges
The IRQ ranges provided in ab8500-core to be passed on to the
ab8500-gpio driver are not only redundant, but they are also
causing a warning in the boot log. These IRQ ranges, like any
other MFD related IRQ resource are passed though MFD core for
automatic conversion to virtual IRQs; however, MFD core does
not support IRQ mapping of IRQ ranges. Let's just remove them.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-11 23:35:03 +01:00
Samuel Ortiz
aec17ea1ee mfd: Explicitely include slab.h to rtsx
This fixes the following build error on some architectures (parisc at least):

drivers/mfd/rtsx_pcr.c: In function 'rtsx_pci_init_chip':
drivers/mfd/rtsx_pcr.c:985:2: error: implicit declaration of function 'kcalloc'
[-Werror=implicit-function-declaration]
drivers/mfd/rtsx_pcr.c:985:13: warning: assignment makes pointer from integer
without a cast [enabled by default]

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-09 10:27:45 +01:00
Samuel Ortiz
45e48aa6ca mfd: Select MFD_CORE for rtsx
The realtek driver use the MFD core API and thus must select MFD_CORE.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-08 10:38:56 +01:00
Wei WANG
1346771060 memstick: Add realtek pcie memstick host driver
Realtek PCI-E Memstick card host driver is used to access Memstick
card, with the help of Realtek PCI-E card reader MFD driver.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Acked-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-08 10:35:18 +01:00
Wei WANG
ff984e57d3 mmc: Add realtek pcie sdmmc host driver
Realtek PCI-E SD/MMC card host driver is used to access SD/MMC card,
with the help of Realtek PCI-E card reader MFD driver.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-08 10:35:17 +01:00
Wei WANG
ada8a8a13b mfd: Add realtek pcie card reader driver
Realtek PCI-E card reader driver adapts requests from upper-level
sdmmc/memstick layer to the real physical card reader.

Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-08 10:35:17 +01:00
Uwe Kleine-König
0312e024d6 mfd: mc13xxx: Add support for mc34708
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-06 23:14:08 +01:00
Uwe Kleine-König
cd0f34b08f mfd: mc13xxx: Change probing details for mc13xxx devices
This removes auto-detection of which variant of mc13xxx is used because
mc34708 uses a different layout in the revision register that doesn't
allow differentiation any more.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Marc Reilly <marc@cpdesign.com.au>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-06 23:11:42 +01:00
Patil, Rachna
5e53a69b44 IIO : ADC: tiadc: Add support of TI's ADC driver
This patch adds support for TI's ADC driver.
This is a multifunctional device.
Analog input lines are provided on which
voltage measurements can be carried out.
You can have upto 8 input lines.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 23:50:27 +01:00
Patil, Rachna
2b99bafab1 input: TSC: ti_tsc: Convert TSC into a MFDevice
This patch converts touchscreen into a MFD client.
All the register definitions, clock initialization,
etc has been moved to MFD core driver.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 23:50:27 +01:00
Patil, Rachna
01636eb970 mfd: ti_tscadc: Add support for TI's TSC/ADC MFDevice
Add the mfd core driver which supports touchscreen
and ADC.
With this patch we are only adding infrastructure to
support the MFD clients.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 23:50:27 +01:00
Patil, Rachna
55c04de517 input: TSC: ti_tscadc: Rename the existing touchscreen driver
Make way for addition of MFD driver.
The existing touchsreen driver is a MFD client.
For better readability we rename the file to
indicate its functionality as only touchscreen.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 23:50:27 +01:00
Patil, Rachna
c6e86db2be input: TSC: ti_tscadc: Remove definition of End Of Interrupt register
The touchscreen IP uses level sensitive interrupts rather
than edge sensitive interrupts and therefore the is no need
to use the EOI register to have the module re-strobe the
interrupt line if there pending interrupts exist.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 23:50:26 +01:00
Patil, Rachna
30af55f930 input: TSC: ti_tscadc: set FIFO0 threshold Interrupt
Code currently uses FIFO1 threshold interrupt.
since this is a MFD, Dedicating FIFO0 to touchscreen
and making way for other devices to use FIFO1 as well.
The FIFO can be shared between 2 devices but since the
interrupt used is threshold interrupt on FIFO1, we would
end up having wrong interrupts. Hence changing the same.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 23:50:26 +01:00
Patil, Rachna
d1fb57435c input: TSC: ti_tscadc: Add Step configuration as platform data
There are 16 programmable Step Configuration
registers which are used by the sequencer.
Program the Steps in order to configure a channel
input to be sampled. If the same step is applied
several times, the coordinate values read are more
accurate.
Hence we provide the user an option of how many steps
should be configured.

For ex: If this value is assigned as 4, This means that
4 steps are applied to read x co-ordinate and 4 steps to read
y co-ordinate. Furtheron the interrupt handler already
holds code to use delta filter and report the best value
out of these values to the input sub-system.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 23:50:26 +01:00
Patil, Rachna
33f5cc605d input: TSC: ti_tscadc: Correct register usage
This patch cleans up the wrong register definitions
and usage for touchscreen controller.
Bit masks were not defined earlier.

For ex: consider a register define as:
write(xyz, ABC)
ABC is expected to be written to register bits 0-11.
Here we see that value written is as expected, but this write
is also affecting all the remaining bits of xyz.
The remaining bits hold the default value as 0 and the write
also sets it to zero. Hence wrong usage were not causing user
visible bugs.
Due to these reasons it was difficult to follow when
compared with TRM.

Unused definitions are also removed.
Since there is change in some naming convention because of
all the above mentioned reasons, the same has been
updated throughout the code.
Bit declarations are grouped to increase readability.

Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-11-05 23:50:26 +01:00
Linus Torvalds
3d70f8c617 Linux 3.7-rc4 2012-11-04 11:07:39 -08:00
Linus Torvalds
d4164973a0 NFS bugfixes for Linux 3.7
- Fix a bunch of deadlock situations:
   * State recovery can deadlock if we fail to release sequence ids before
     scheduling the recovery thread.
   * Calling deactivate_super() from an RPC workqueue thread can deadlock
     because of the call to rpc_shutdown_client.
 - Display the device name correctly in /proc/*/mounts
 - Fix a number of incorrect error return values:
   * When NFSv3 mounts fail due to a timeout.
   * On NFSv4.1 backchannel setup failure
   * On NFSv4 open access checks
 - pnfs_find_alloc_layout() must check the layout pointer for NULL
 - Fix a regression in the legacy DNS resolved
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJQlXRyAAoJEGcL54qWCgDy1G4QALUjERF6VBaDUVRVDe3cyrNr
 1y5niKU19ysaXuNKtsGquVr3y72c0xyzCFLan8ZqJl1kXpYTDIyoDc0NBT3reffo
 T4rbw8SXVFVk+iVcJQgnFo5tblHVsVk+fvZPezBknaBb/uI/kxIbicZHHxvASyzM
 G0Ge/MC709x07tu3wJSyOtvD55j6bfpwbon6yjOKdN8/S2nOEsNOBjAunOWrKtsa
 2v3uWC9APQqIF5z6dfhAVCEMRrQMame6W6b5LuY/MSQpLAwUUYeCGzjc1TMeWvnS
 n66iCqQ0TCVgJH+7fYnrzPm5uNk4Am2XhM3QY1B0j8zl73ZWIs4PfjdoBytLnqF+
 SykNVUl72WqdJnWPCtk6LvoctyOsSMK5pJj4jadvNqDKgFkuRZkWb28bqux2OlHg
 ZCmnEZiew5tV+2anF6sgEaEhSyKNR/1h1ilXOy2TaV93qX+ec8tg+TE6C6YQR/R+
 IoOoYD8Hbe/R/D76WK0xOOQbrXIQvKb1zvlIRx7W6d5gWpg9IceNLcBfCiF1GjPf
 0PKxTbBSbSg44IRolPIprsZx6YzCI6wj2UzdPC7riozfZdSZ+T6Hh7z8rhhTjsHS
 D5emunX93kMp5QSSrw6EtdTkRJ++DB+cpjK5SP7UydHsWSGnKbd8eIv7viZu5J5O
 FLcHHWKIan9wQCslGQkO
 =NjEu
 -----END PGP SIGNATURE-----

Merge tag 'nfs-for-3.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:

 - Fix a bunch of deadlock situations:
   * State recovery can deadlock if we fail to release sequence ids
     before scheduling the recovery thread.
   * Calling deactivate_super() from an RPC workqueue thread can
     deadlock because of the call to rpc_shutdown_client.

 - Display the device name correctly in /proc/*/mounts

 - Fix a number of incorrect error return values:
   * When NFSv3 mounts fail due to a timeout.
   * On NFSv4.1 backchannel setup failure
   * On NFSv4 open access checks

 - pnfs_find_alloc_layout() must check the layout pointer for NULL

 - Fix a regression in the legacy DNS resolved

* tag 'nfs-for-3.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS4: nfs4_opendata_access should return errno
  NFSv4: Initialise the NFSv4.1 slot table highest_used_slotid correctly
  SUNRPC: return proper errno from backchannel_rqst
  NFS: add nfs_sb_deactive_async to avoid deadlock
  nfs: Show original device name verbatim in /proc/*/mount{s,info}
  nfsv3: Make v3 mounts fail with ETIMEDOUTs instead EIO on mountd timeouts
  nfs: Check whether a layout pointer is NULL before free it
  NFS: fix bug in legacy DNS resolver.
  NFSv4: nfs4_locku_done must release the sequence id
  NFSv4.1: We must release the sequence id when we fail to get a session slot
  NFS: Wait for session recovery to finish before returning
2012-11-03 15:27:21 -07:00