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aca5ce14eb
linux/drivers/gpio
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Laxman Dewangan aca5ce14eb gpio: gpiolib: Support for open drain/collector gpios 
Adding support for the open drain gpio on which client
can specify the open drain property through GPIO flag
GPIOF_OPEN_DRAIN at the time of gpio request.
The open drain pins are normally pulled high and it
cannot be driven to output with value of 1 and so
when client request for setting the pin to HIGH, the
gpio will be set to input direction to make pin in tristate
and hence PULL-UP on pins will make the state to HIGH.
The open drain pin can be driven to LOW by setting output
with value of 0.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviwed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-05 07:49:44 -07:00
..
devres.c GPIO: add bindings for managed devices 2012-01-04 11:37:42 -07:00
gpio-74x164.c drivers/gpio: Fix drivers who are implicit users of module.h 2011-10-31 19:31:47 -04:00
gpio-ab8500.c gpio: ab8500: fix MODULE_ALIAS for ab8500 2011-07-28 16:19:23 -06:00
gpio-adp5520.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-adp5588.c gpiolib: output basic details and consolidate gpio device drivers 2011-12-12 13:40:16 -07:00
gpio-bt8xx.c gpiolib: output basic details and consolidate gpio device drivers 2011-12-12 13:40:16 -07:00
gpio-cs5535.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-da9052.c Changes queued in gpio/next for the start of the 3.3 merge window 2012-01-07 12:15:36 -08:00
gpio-davinci.c ARM: 7074/1: gpio: davinci: eliminate unused variable warnings 2011-09-05 11:26:34 +01:00
gpio-ep93xx.c drivers/gpio: Fix drivers who are implicit users of module.h 2011-10-31 19:31:47 -04:00
gpio-generic.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-it8761e.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-janz-ttl.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-ks8695.c ARM: 7036/1: mach-ks8695: break out GPIO driver specifics 2011-08-22 09:12:54 +01:00
gpio-langwell.c gpio: langwell: ensure alternate function is cleared 2011-10-06 04:14:52 -06:00
gpio-lpc32xx.c Correct bad gpio naming 2012-01-22 12:31:04 -07:00
gpio-max730x.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-max732x.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-max7300.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-max7301.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-mc9s08dz60.c ARM/mx35/3ds: gpio: add mc9s08dz60 gpio function 2012-01-30 07:49:08 -07:00
gpio-mc33880.c drivers/gpio: Fix drivers who are implicit users of module.h 2011-10-31 19:31:47 -04:00
gpio-mcp23s08.c drivers/gpio: Fix drivers who are implicit users of module.h 2011-10-31 19:31:47 -04:00
gpio-ml-ioh.c gpio: Add missing spin_lock_init in gpio-ml-ioh driver 2012-02-01 21:59:37 -07:00
gpio-mpc8xxx.c irq_domain/powerpc: Replace custom xlate functions with library functions 2012-02-16 06:11:24 -07:00
gpio-mpc5200.c drivers/gpio: Fix drivers who are implicit users of module.h 2011-10-31 19:31:47 -04:00
gpio-msm-v1.c gpio_msm: Move Qualcomm v6 MSM driver into drivers 2011-08-01 04:58:00 -07:00
gpio-msm-v2.c gpio_msm: Move Qualcomm MSM v2 gpio driver into drivers 2011-08-01 04:58:00 -07:00
gpio-mxc.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
gpio-mxs.c Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux 2011-11-06 19:44:47 -08:00
gpio-nomadik.c gpiolib: output basic details and consolidate gpio device drivers 2011-12-12 13:40:16 -07:00
gpio-omap.c gpio/omap: handle set_dataout reg capable IP on restore 2012-02-06 16:58:45 +05:30
gpio-pca953x.c gpio: pca953x: Staticise pca953x_get_altdata() 2011-11-21 20:53:15 +01:00
gpio-pcf857x.c gpiolib: output basic details and consolidate gpio device drivers 2011-12-12 13:40:16 -07:00
gpio-pch.c gpio: Add missing spin_lock_init in gpio-pch driver 2012-02-01 21:59:15 -07:00
gpio-pl061.c gpio/gpio-pl061: No need of thaw and poweroff routines for hibernate 2012-02-16 06:37:51 -07:00
gpio-pxa.c ARM: pxa: add clk support in gpio driver 2011-11-15 19:09:36 +08:00
gpio-rdc321x.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-sa1100.c GPIO: sa1100: implement proper gpiolib gpio_to_irq conversion 2012-01-13 22:25:23 -07:00
gpio-samsung.c gpio: samsung: adapt to changes in gpio specifier translator function declaration 2012-02-01 17:05:28 -07:00
gpio-sch.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-sodaville.c gpio: Add a driver for Sodaville GPIO controller 2012-02-03 16:13:25 -07:00
gpio-stmpe.c gpio: Add support for stmpe variant 801 2012-01-09 00:37:44 +01:00
gpio-sx150x.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-tc3589x.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-tegra.c drivers/gpio/gpio-tegra.c: use devm_request_and_ioremap 2012-01-02 01:43:50 -07:00
gpio-timberdale.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-tnetv107x.c ARM: 7039/1: mach-davinci: move DaVinci TNET GPIO driver to GPIO subsystem 2011-08-22 09:12:55 +01:00
gpio-tps65910.c gpio: tps65910: Add sleep control support 2012-02-05 23:08:29 -07:00
gpio-tps65912.c tps65912: gpio: add gpio driver 2011-07-31 23:28:22 +02:00
gpio-twl4030.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-ucb1400.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-vr41xx.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-vx855.c gpio: Convert GPIO drivers to module_platform_driver 2012-01-02 00:26:06 -07:00
gpio-wm831x.c Merge branch 'gpio/next' of git://git.secretlab.ca/git/linux-2.6 2011-07-22 14:50:57 -07:00
gpio-wm8350.c gpio: reorganize drivers 2011-06-06 10:10:11 -06:00
gpio-wm8994.c gpio: Add decode of WM8994 GPIO configuration 2012-01-02 00:27:01 -07:00
gpio-xilinx.c gpiolib: output basic details and consolidate gpio device drivers 2011-12-12 13:40:16 -07:00
gpiolib.c gpio: gpiolib: Support for open drain/collector gpios 2012-03-05 07:49:44 -07:00
Kconfig gpio: Add a driver for Sodaville GPIO controller 2012-02-03 16:13:25 -07:00
Makefile gpio: Add a driver for Sodaville GPIO controller 2012-02-03 16:13:25 -07:00