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path: root/drivers/gpio
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2010-03-07driver-core: Add attribute argument to class_attribute show/storeAndi Kleen
Passing the attribute to the low level IO functions allows all kinds of cleanups, by sharing low level IO code without requiring an own function for every piece of data. Also drivers can extend the attributes with own data fields and use that in the low level function. This makes the class attributes the same as sysdev_class attributes and plain attributes. This will allow further cleanups in drivers. Full tree sweep converting all users. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-03-07mfd: Fix lpc_sch related depends/selects, fix build errorRandy Dunlap
LPC_SCH is selected by GPI_SCH and I2C_ISCH, even when PCI is not enabled, but LPC_SCH depends on PCI, so make GPI_SCH and I2C_ISCH also depend on PCI. Those 2 selects also need to select what LPC_SCH selects, since kconfig does not follow selects. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Denis Turischev <denis@compulab.co.il> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07gpio: Fix sch_gpio warningSamuel Ortiz
We need to check for gpiochip_remove() errors. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07gpio: add Intel SCH GPIO controller driverDenis Turischev
Signed-off-by: Denis Turischev <denis@compulab.co.il> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07gpiolib: Force wm831x GPIOs into GPIO mode when requestedMark Brown
This is the chip default but it's possible the bootloader or OTP will have been configured to a different mode (eg, to provide feedback during startup). Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07mfd: Add WM831x revision B supportMark Brown
Revision B of the WM831x devices changes the sense of the tristate bit for GPIO configuration, inverting it to become an enable instead. Take account of this in the gpiolib driver. A current sink regulation status bit has also been added in revision B, add a flag indicating if it's present but don't use it yet. This revision also adds an interrupt on key up for the ON pin event which the existing code is able to take advantage of. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07gpiolib: Correct debugfs display of WM831x GPIO inversionMark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07gpiolib: Actually set output state in wm831x_gpio_direction_output()Mark Brown
wm831x_gpio_direction_output() ignored the state passed into it. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@kernel.org Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07gpiolib: Add WM8994 GPIO supportMark Brown
The WM8994 has 11 GPIO lines. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-07gpiolib: Add support for WM8350 GPIO controllerMark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2010-03-06gpio: introduce it8761e_gpio driver for IT8761E Super I/O chipDenis Turischev
Signed-off-by: Denis Turischev <denis@compulab.co.il> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06gpio: cs5535-gpio: fix input directionBen Gardner
The cs5535-gpio driver's get() function was returning the output value. This means that the GPIO pins would never work as an input, even if configured as an input. The driver should return the READ_BACK value, which is the sensed line value. To make that work when the direction is 'output', INPUT_ENABLE needs to be set. In addition, the driver was not disabling OUTPUT_ENABLE when the direction is set to 'input'. That would cause the GPIO to continue to drive the pin if the direction was ever set to output. This issue was noticed when attempting to use the gpiolib driver to read an external input. I had previously been using the char/cs5535-gpio driver. Signed-off-by: Ben Gardner <gardner.ben@gmail.com> Acked-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: <stable@kernel.org> [2.6.33.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06gpio: pca953x.c: add interrupt handling capabilityMarc Zyngier
Most of the GPIO expanders controlled by the pca953x driver are able to report changes on the input pins through an *INT pin. This patch implements the irq_chip functionality (edge detection only). The driver has been tested on an Arcom Zeus. [akpm@linux-foundation.org: the compiler does inlining for us nowadays] Signed-off-by: Marc Zyngier <maz@misterjones.org> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: David Brownell <david-b@pacbell.net> Cc: Nate Case <ncase@xes-inc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06timbgpio: add support for interrupt triggering on both flanksRichard Röjfors
Introduce support for triggering interrupts on both rising and falling edge. This feature requires version 3 or newer of the IP, a version check is done when triggering on both edges is requested. Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06gpio: introduce gpio_request_one() and friendsEric Miao
gpio_request() without initial configuration of the GPIO is normally useless, introduce gpio_request_one() together with GPIOF_ flags for input/output direction and initial output level. gpio_{request,free}_array() for multiple GPIOs. Signed-off-by: Eric Miao <eric.y.miao@gmail.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Ben Nizette <bn@niasdigital.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06gpio: add driver for MAX7300 I2C GPIO extenderWolfram Sang
Add the MAX7300-I2C variant of the MAX7301-SPI version. Both chips share the same core logic, so the generic part of the in-kernel SPI-driver is refactored into a generic part. The I2C and SPI specific funtions are then wrapped into seperate drivers picking up the generic part. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Juergen Beisert <j.beisert@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: Jean Delvare <khali@linux-fr.org> Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06bitops: rename for_each_bit() to for_each_set_bit()Akinobu Mita
Rename for_each_bit to for_each_set_bit in the kernel source tree. To permit for_each_clear_bit(), should that ever be added. The patch includes a macro to map the old for_each_bit() onto the new for_each_set_bit(). This is a (very) temporary thing to ease the migration. [akpm@linux-foundation.org: add temporary for_each_bit()] Suggested-by: Alexey Dobriyan <adobriyan@gmail.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Artem Bityutskiy <dedekind@infradead.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06timbgpio: fix buildDavid Miller
Use of get_irq_chip_data() et al. requires including linux/irq.h Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Richard Röjfors <richard.rojfors@pelagicore.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-11gpio: adp5588-gpio: new driver for ADP5588 GPIO expandersMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Jean Delvare <khali@linux-fr.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-01-11gpiolib: fix poll(2) support reconfigure on sysfs polarity changeJani Nikula
Previously enabled poll(2) support on one edge was never reconfigured when sysfs polarity change was triggered from kernel, because 'struct device *dev' shadowed an earlier definition. Found by sparse, which I should've run much earlier. Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-16gpiolib: add support for changing value polarity in sysfsJani Nikula
Drivers may use gpiolib sysfs as part of their public user space interface. The GPIO number and polarity might change from board to board. The gpio_export_link() call can be used to hide the GPIO number from user space. Add support for also hiding the GPIO line polarity changes from user space. Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-16gpio: add GPIO driver for the Timberdale FPGARichard Röjfors
A GPIO driver for the Timberdale FPGA found on the Intel Atom board Russellville. The GPIO driver also has an IRQ-chip to support interrupts on the pins. Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-16gpio: fix test on unsigned in lnw_irq_type()Roel Kluin
The wrong test was used, gpio is unsigned and it had an off-by-one. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Alek Du <alek.du@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15cs5535: drop the Geode-specific MFGPT/GPIO codeAndres Salomon
With generic modular drivers handling all of this stuff, the geode-specific code can go away. The cs5535-gpio, cs5535-mfgpt, and cs5535-clockevt drivers now handle this. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Chris Ball <cjb@laptop.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15cs5535-gpio: request function, mask & names addedTobias Mueller
Changed number of gpio pins to 32 (according to datasheet) Added mask to disable some pins Added gpio_request for checking mask and disabling special pin functions Added pin names [dilinger@collabora.co.uk: make printk usage consistent] Signed-off-by: Tobias Mueller <Tobias_Mueller@twam.info> Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Takashi Iwai <tiwai@suse.de> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-15cs5535-gpio: add AMD CS5535/CS5536 GPIO driver supportAndres Salomon
This creates a CS5535/CS5536 GPIO driver which uses a gpio_chip backend (allowing GPIO users to use the generic GPIO API if desired) while also allowing architecture-specific users directly (via the cs5535_gpio_* functions). Tested on an OLPC machine. Some Leemotes also use CS5536 (with a mips cpu), which is why this is in drivers/gpio rather than arch/x86. Currently, it conflicts with older geode GPIO support; once MFGPT support is reworked to also be more generic, the older geode code will be removed. Signed-off-by: Andres Salomon <dilinger@collabora.co.uk> Cc: Takashi Iwai <tiwai@suse.de> Cc: Jordan Crouse <jordan@cosmicpenguin.net> Cc: David Brownell <david-b@pacbell.net> Reviewed-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-13mfd: Rename all twl4030_i2c*Balaji T K
This patch renames function names like twl4030_i2c_write_u8, twl4030_i2c_read_u8 to twl_i2c_write_u8, twl_i2c_read_u8 and also common variable in twl-core.c Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-12-13mfd: Rename twl4030* driver files to enable re-useSantosh Shilimkar
The upcoming TWL6030 is companion chip for OMAP4 like the current TWL4030 for OMAP3. The common modules like RTC, Regulator creates opportunity to re-use the most of the code from twl4030. This patch renames few common drivers twl4030* files to twl* to enable the code re-use. Signed-off-by: Rajendra Nayak <rnayak@ti.com> Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-12-13gpiolib: Implement gpio_to_irq() for wm831xMark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-12-13gpio: adp5520: rename common defines and typosMichael Hennerich
The common adp5520 mfd defines were namespaced to avoid collisions, so update the define used in this driver accordingly. The structs were also renamed to fix a spelling typo. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-12-13gpiolib: Make WM831x GPIO count dynamicMark Brown
This supports future devices with fewer GPIOs. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-12-01gpio: Langwell GPIO driver bugfixesAlek Du
- Remove wrong and unnecessary unmask operation - Remove extra GEDR reading This fixes the loss of interrupts which occurs when two or more pins are triggered in close succession. Signed-off-by: Alek Du <alek.du@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12gpiolib: fix device_create() result checkSergei Shtylyov
In case of failure, device_create() returns not NULL but the error code. The current code checks for non-NULL though which causes kernel oops in sysfs_create_group() when device_create() fails. Check for error using IS_ERR() and propagate the error value using PTR_ERR() instead of fixed -ENODEV code returned now... Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-29twl4030-gpio: remove __devexit markings from remove funcMike Frysinger
The gpio_twl4030_probe() function calls gpio_twl4030_remove(), and the former has __devinit, so the latter cannot use __devexit. Otherwise we hit the section mismatch warning: WARNING: drivers/gpio/built-in.o(.devinit.text+0x71a): Section mismatch in reference from the function _gpio_twl4030_probe() to the function .devexit.text:_gpio_twl4030_remove() The function __devinit _gpio_twl4030_probe() references a function __devexit _gpio_twl4030_remove(). This is often seen when error handling in the init function uses functionality in the exit path. The fix is often to remove the __devexit annotation of _gpio_twl4030_remove() so it may be used outside an exit section. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01const: constify remaining file_operationsAlexey Dobriyan
[akpm@linux-foundation.org: fix KVM] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23Merge branch 'i2c-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging * 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: i2c: Clearly mark ACPI drivers as such i2c: Add driver for SMBus Control Method Interface i2c-pnx: Correct use of request_region/request_mem_region MAINTAINERS: Add maintainer for AT24 and PCA9564/PCA9665 i2c-piix4: Add AMD SB900 SMBus device ID i2c/chips: Remove deprecated pcf8574 driver i2c/chips: Remove deprecated pca9539 driver i2c/chips: Remove deprecated pcf8575 driver gpio/pcf857x: Copy i2c_device_id from old pcf8574 driver i2c/scx200_acb: Provide more information on bus errors i2c: Provide compatibility links for i2c adapters i2c: Convert i2c adapters to bus devices i2c: Convert i2c clients to a device type i2c/tsl2550: Use combined SMBus transactions i2c-taos-evm: Switch echo off to improve performance i2c: Drop unused i2c_driver.id field
2009-09-23gpio: gpio support for ADP5520/ADP5501 MFD PMICsMichael Hennerich
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23gpiolib: allow poll() on valueDaniel Glöckner
Many gpio chips allow to generate interrupts when the value of a pin changes. This patch gives usermode application the opportunity to make use of this feature by calling poll(2) on the /sys/class/gpio/gpioN/value sysfs file. The edge to trigger can be set in the edge file in the same directory. Possible values are "none", "rising", "falling", and "both". Using level triggers is not possible with current sysfs since nothing changes the GPIO value (and the IRQ keeps triggering). Edge triggering will "just work". Note that if there was an event between read() and poll(), the poll() returns immediately. Also note that this version only supports true GPIO interrupts. Some later patch might be able to synthesize this behavior by timer-driven polling; some systems seem to need that. [dbrownell@users.sourceforge.net: align ids to 16 bit ids; whitespace] Signed-off-by: Daniel Glöckner <dg@emlix.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23gpio: include <linux/gpio.h> not <asm/gpio.h>H Hartley Sweeten
Drivers should be including <linux/gpio.h> not <asm/gpio.h>. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23gpio: pca953x: add support for MAX7315Alek Du
MAX7315 is pin and software compatible with PCA9534, so add it to the I2C device ID table of pca953x driver. http://www.datasheetcatalog.org/datasheet/maxim/MAX7315.pdf Signed-off-by: Alek Du <alek.du@intel.com> Acked-by: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23gpio: add Intel Moorestown Platform Langwell chip gpio driverAlek Du
The Langwell chip is the IO hub for Intel Moorestown platform which has a 64-pin gpio block device inside. It is exposed as a dedicated PCI device. We use it to control outside peripheral as well as to do IRQ demuxing. The gpio block uses MSI to send level type interrupt to IOAPIC. Signed-off-by: Alek Du <alek.du@intel.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23mfd/gpio: add a GPIO interface to the UCB1400 MFD chip driver via gpiolibMarek Vasut
Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: David Brownell <david-b@pacbell.net> Cc: Samuel Ortiz <sameo@openedhand.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23gpio: add MC33880 driverRichard Röjfors
A GPIO driver for the Freescale MC33880 High/Low side switch Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23gpiolib: allow exported GPIO nodes to be named using sysfs linksJani Nikula
Commit 926b663ce8215ba448960e1ff6e58b67a2c3b99b (gpiolib: allow GPIOs to be named) already provides naming on the chip level. This patch provides more flexibility by allowing multiple names where ever in sysfs on a per GPIO basis. Adapted from David Brownell's comments on a similar concept: http://lkml.org/lkml/2009/4/20/203. [randy.dunlap@oracle.com: fix build for CONFIG_GENERIC_GPIO=n] Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com> Acked-by: David Brownell <david-b@pacbell.net> Cc: Daniel Silverstone <dsilvers@simtec.co.uk> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23spi: prefix modalias with "spi:"Anton Vorontsov
This makes it consistent with other buses (platform, i2c, vio, ...). I'm not sure why we use the prefixes, but there must be a reason. This was easy enough to do it, and I did it. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: "John W. Linville" <linville@tuxdriver.com> Acked-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-21trivial: add __init/__exit macros in drivers/gpio/bt8xxgpio.cPeter Huewe
Trivial patch which adds the __init/__exit macro to the init/exit functions of drivers/gpio/bt8xxgpio.c Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Acked-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-09-18gpio/pcf857x: Copy i2c_device_id from old pcf8574 driverWolfram Sang
The deprecated pcf8574 driver is going to be removed. Make sure the replacement driver inherits all i2c_device_ids for a smooth transition. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-09-17gpio: Add WM831X GPIO driverMark Brown
Add support for the GPIO pins on the WM831x. No direct support is currently supplied for configuring non-gpiolib functionality such as pull configuration and alternate functions, soft configuration of these will be provided in a future patch. Currently use of these pins as interrupts is not supported due to the ongoing issues with generic irq not support interrupt controllers on interrupt driven buses. Users can directly request the interrupts with the wm831x-specific APIs currently provided if required. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-07-12headers: smp_lock.h reduxAlexey Dobriyan
* Remove smp_lock.h from files which don't need it (including some headers!) * Add smp_lock.h to files which do need it * Make smp_lock.h include conditional in hardirq.h It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT This will make hardirq.h inclusion cheaper for every PREEMPT=n config (which includes allmodconfig/allyesconfig, BTW) Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-03Update Yoichi Yuasa's e-mail addressYoichi Yuasa
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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