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18c28caa17
linux/drivers/pinctrl
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Tomasz Figa 18c28caa17 pinctrl: samsung: Decouple direction setting from pinctrl 
This patch makes the pinctrl-samsung driver configure GPIO direction on
its own, without using the pinctrl_gpio_direction_*() "helpers". The
rationale behind this change is as follows:
 - pinctrl-samsung does not need translation from GPIO namespace to
   pinctrl namespace to handle GPIO operations - GPIO chip and offset
   therein are enough to calculate necessary offsets and bit masks in
   constant time,
 - the pinctrl_gpio_direction_*() functions do not do anything useful
   other than translating the pin into pinctrl namespace and calling the
   .gpio_set_direction() from pinmux_ops of the controller,
 - the undesirable side effect of using those helpers is losing the
   ability to change GPIO direction in atomic context, because they
   explicitly use a mutex for synchronization,

Results of this patch are:
 - fixed warnings about scheduling while atomic in code that needs to
   set GPIO direction in atomic context (e.g. interrupt handler),
 - reduced overhead of bitbanging drivers that use gpio_direction_*(),
   e.g. i2c-gpio.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-07-11 14:08:36 +02:00
..
berlin pinctrl: berlin: Use devm_ioremap_resource() 2014-05-27 16:03:24 +02:00
mvebu pinctrl: mvebu: new driver for Orion platforms 2014-04-24 15:09:35 +02:00
sh-pfc sh-pfc: r8a7791: add CAN pin groups 2014-07-11 14:08:36 +02:00
sirf pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
spear pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
sunxi pinctrl: sunxi: Add A23 R_PIO controller support 2014-07-11 14:08:30 +02:00
vt8500 pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
core.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
core.h pinctrl: move subsystem mutex to pinctrl_dev struct 2013-04-26 17:01:35 +02:00
devicetree.c pinctrl: Quiet logging about missing DT nodes when not using DT 2014-02-24 10:44:54 +01:00
devicetree.h
Kconfig pinctrl: Add i.MX1 pincontrol driver 2014-07-11 14:08:25 +02:00
Makefile pinctrl: Add i.MX1 pincontrol driver 2014-07-11 14:08:25 +02:00
pinconf-generic.c pinctrl: Enable "power-source" to be extracted from DT files 2014-05-28 10:16:35 +02:00
pinconf.c pinctrl: pinconf: remove warning: unused variable 'ops' 2013-12-13 13:55:15 +01:00
pinconf.h pinctrl: add function to parse generic pinconfig properties from a dt node 2013-06-16 11:57:32 +02:00
pinctrl-ab8500.c pinctrl: ab8500: Staticize some symbols 2013-04-09 09:54:00 +02:00
pinctrl-ab8505.c pinctrl: ab8505: Staticize some symbols 2013-04-09 09:59:42 +02:00
pinctrl-ab8540.c pinctrl: ab8540: Staticize some symbols 2013-04-09 09:58:02 +02:00
pinctrl-ab9540.c pinctrl: ab9540: Staticize some symbols 2013-04-09 09:55:59 +02:00
pinctrl-abx500.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-abx500.h mfd/pinctrl: Delete platform data header 2014-01-21 08:27:42 +00:00
pinctrl-adi2-bf54x.c pinctrl: pinctrl-adi: combine multiple groups of one function together 2014-02-25 10:49:13 +01:00
pinctrl-adi2-bf60x.c pinctrl: pinctrl-adi: combine multiple groups of one function together 2014-02-25 10:49:13 +01:00
pinctrl-adi2.c pinctrl: pinctrl-adi2.c: Cleaning up wrong format string usage 2014-07-11 14:08:34 +02:00
pinctrl-adi2.h pinctrl: pinctrl-adi: combine multiple groups of one function together 2014-02-25 10:49:13 +01:00
pinctrl-apq8064.c pinctrl: msm: Add missing sdc1 and sdc3 groups 2014-05-28 11:02:23 +02:00
pinctrl-as3722.c pinctrl: as3722: fix handling of GPIO invert bit 2014-04-22 17:04:11 +02:00
pinctrl-at91.c pinctrl: pinctrl-at91.c: Cleaning up values that are never used 2014-07-11 14:08:33 +02:00
pinctrl-baytrail.c pinctrl: baytrail: Warn if direct IRQ GPIO set to output 2014-07-11 14:08:35 +02:00
pinctrl-bcm281xx.c pinctrl: bcm281xx: Staticize bcm281xx_pinctrl_probe 2014-07-11 14:08:31 +02:00
pinctrl-bcm2835.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-coh901.c pinctrl: coh901: convert driver to use gpiolib irqchip 2014-03-26 10:31:34 +01:00
pinctrl-coh901.h
pinctrl-exynos5440.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-exynos.c pinctrl: exynos: Add driver data for Exynos3250 2014-04-23 09:00:25 +02:00
pinctrl-exynos.h pinctrl: exynos: Handle suspend/resume of GPIO EINT registers 2013-05-27 15:37:09 +02:00
pinctrl-falcon.c pinctrl: Pass all configs to driver on pin_config_set() 2013-08-28 13:34:41 +02:00
pinctrl-imx1-core.c pinctrl: pinctrl-imx1-core.c: Cleaning up if unsigned is less than zero 2014-07-11 14:08:33 +02:00
pinctrl-imx1.c pinctrl: Add i.MX1 pincontrol driver 2014-07-11 14:08:25 +02:00
pinctrl-imx1.h pinctrl: imx1 core driver 2013-10-29 06:54:37 -07:00
pinctrl-imx6dl.c pinctrl: remove redundant of_match_ptr 2013-10-08 10:02:25 +02:00
pinctrl-imx6q.c pinctrl: remove redundant of_match_ptr 2013-10-08 10:02:25 +02:00
pinctrl-imx6sl.c pinctrl: remove redundant of_match_ptr 2013-10-08 10:02:25 +02:00
pinctrl-imx6sx.c pinctrl: add pinctrl driver for imx6sx 2014-05-27 11:24:28 +02:00
pinctrl-imx23.c
pinctrl-imx25.c pinctrl: pinctrl-imx: add imx25 pinctrl driver 2013-11-25 09:08:30 +01:00
pinctrl-imx27.c pinctrl: i.MX27: Remove nonexistent pad definitions 2014-07-11 14:08:26 +02:00
pinctrl-imx28.c
pinctrl-imx35.c pinctrl: remove redundant of_match_ptr 2013-10-08 10:02:25 +02:00
pinctrl-imx50.c pinctrl: imx50: add pinctrl support code for the IMX50 SoC 2013-11-06 10:06:59 +01:00
pinctrl-imx51.c pinctrl: remove redundant of_match_ptr 2013-10-08 10:02:25 +02:00
pinctrl-imx53.c pinctrl: remove redundant of_match_ptr 2013-10-08 10:02:25 +02:00
pinctrl-imx.c pinctrl: pinctrl-imx.c: Cleaning up if unsigned is less than zero 2014-07-11 14:08:32 +02:00
pinctrl-imx.h pinctrl: imx: Use struct type for pins 2013-08-16 14:43:56 +02:00
pinctrl-ipq8064.c pinctrl: qcom: ipq8064: Fix naming convention 2014-05-29 10:37:43 +02:00
pinctrl-lantiq.c pinctrl/lantiq: Free mapping configs for both pin and groups 2013-05-15 13:28:46 +02:00
pinctrl-lantiq.h pinctrl: lantiq: Fix header file include guard 2014-04-22 08:41:35 +02:00
pinctrl-msm8x74.c pinctrl: msm: Add more MSM8X74 pin definitions 2014-05-29 10:42:59 +02:00
pinctrl-msm.c pinctrl: qcom: Add BUS_HOLD pin bias 2014-07-11 14:08:31 +02:00
pinctrl-msm.h pinctrl: msm: Make number of functions variable 2014-04-22 08:41:34 +02:00
pinctrl-mxs.c pinctrl: Pass all configs to driver on pin_config_set() 2013-08-28 13:34:41 +02:00
pinctrl-mxs.h
pinctrl-nomadik-db8500.c pinctrl/nomadik-db8500: Fix checkpatch errors 2013-03-27 22:21:32 +01:00
pinctrl-nomadik-db8540.c
pinctrl-nomadik-stn8815.c pinctrl: pinctrl-nomadik-stn8815: Fix checkpatch error 2013-03-13 19:50:20 +01:00
pinctrl-nomadik.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-nomadik.h pinctrl: nomadik: move platform data handling into driver 2013-11-26 21:01:58 +01:00
pinctrl-palmas.c pinctrl: palmas: remove pin config BIAS_PULL_PIN_DEFAULT support 2013-10-08 13:27:27 +02:00
pinctrl-rockchip.c pinctrl: rockchip: add support for rk3288 pin-controller 2014-07-11 14:08:29 +02:00
pinctrl-s3c24xx.c pinctrl: s3c24xx: off by one in s3c24xx_eint_init() 2013-08-28 14:44:25 +02:00
pinctrl-s3c64xx.c pinctrl: s3c64xx: Fix build error caused by undefined chained_irq_enter 2013-04-23 13:59:45 +02:00
pinctrl-samsung.c pinctrl: samsung: Decouple direction setting from pinctrl 2014-07-11 14:08:36 +02:00
pinctrl-samsung.h pinctrl: exynos: Add driver data for Exynos3250 2014-04-23 09:00:25 +02:00
pinctrl-single.c pinctrl: pinctrl-single.c: Cleaning up wrong format string usage 2014-07-11 14:08:35 +02:00
pinctrl-st.c pinctrl: pinctrl-st.c: Cleaning up values that are never used 2014-07-11 14:08:35 +02:00
pinctrl-tb10x.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-tegra20.c pinctrl: tegra: remove fsafe from data tables 2014-04-22 16:50:24 +02:00
pinctrl-tegra30.c pinctrl: tegra: remove fsafe from data tables 2014-04-22 16:50:24 +02:00
pinctrl-tegra114.c pinctrl: tegra: remove fsafe from data tables 2014-04-22 16:50:24 +02:00
pinctrl-tegra124.c pinctrl: tegra: remove fsafe from data tables 2014-04-22 16:50:24 +02:00
pinctrl-tegra.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-tegra.h pinctrl: tegra: add missing kerneldoc 2014-04-22 16:55:41 +02:00
pinctrl-tz1090-pdc.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-tz1090.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-u300.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinctrl-utils.c pinctrl: utils: include export.h to avoid warnings 2013-08-28 15:50:33 +02:00
pinctrl-utils.h pinctrl: add utility functions for add map/configs 2013-08-14 21:00:41 +02:00
pinctrl-vf610.c pinctrl: remove redundant of_match_ptr 2013-10-08 10:02:25 +02:00
pinctrl-xway.c pinctrl/lantiq: fix typo 2014-01-08 10:13:38 +01:00
pinmux.c pinctrl: avoid duplicated calling enable_pinmux_setting for a pin 2014-07-11 14:08:26 +02:00
pinmux.h