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| author | Olof Johansson <olof@lixom.net> | 2012-09-20 16:41:32 -0700 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2012-09-20 16:41:32 -0700 |
| commit | 827cbe71886bc82125212630a52c5fe94b284330 (patch) | |
| tree | a1f81706789fd8bbc5ace65e0bec4df7a603f272 /drivers/gpio/gpio-samsung.c | |
| parent | 1ef3f756b069469621a47ded867e71c97e1b483f (diff) | |
| parent | 011527b45f8e3092e1f3192e5aea94187a6ca269 (diff) | |
| download | blackbird-op-linux-827cbe71886bc82125212630a52c5fe94b284330.tar.gz blackbird-op-linux-827cbe71886bc82125212630a52c5fe94b284330.zip | |
Merge branch 'next/pinctrl-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers
From Kukjin Kim:
This branch is for supporting pinctrl for Samsung EXYNOS. Now this can
support EXYNOS4210 and other EXYNOS SoCs such as EXYNOS4X12 will be
supported next time.
* 'next/pinctrl-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Enable pinctrl driver support for EXYNOS4 device tree enabled platform
ARM: dts: Add pinctrl node entries for SAMSUNG EXYNOS4210 SoC
ARM: EXYNOS: skip wakeup interrupt setup if pinctrl driver is used
gpio: exynos4: skip gpiolib registration if pinctrl driver is used
pinctrl: add exynos4210 specific extensions for samsung pinctrl driver
pinctrl: add samsung pinctrl and gpiolib driver
Diffstat (limited to 'drivers/gpio/gpio-samsung.c')
| -rw-r--r-- | drivers/gpio/gpio-samsung.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c index ba126cc04073..41ab7f66cdf9 100644 --- a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@ -2734,6 +2734,27 @@ static __init void exynos4_gpiolib_init(void) int group = 0; void __iomem *gpx_base; +#ifdef CONFIG_PINCTRL_SAMSUNG + /* + * This gpio driver includes support for device tree support and + * there are platforms using it. In order to maintain + * compatibility with those platforms, and to allow non-dt + * Exynos4210 platforms to use this gpiolib support, a check + * is added to find out if there is a active pin-controller + * driver support available. If it is available, this gpiolib + * support is ignored and the gpiolib support available in + * pin-controller driver is used. This is a temporary check and + * will go away when all of the Exynos4210 platforms have + * switched to using device tree and the pin-ctrl driver. + */ + struct device_node *pctrl_np; + const char *pctrl_compat = "samsung,pinctrl-exynos4210"; + pctrl_np = of_find_compatible_node(NULL, NULL, pctrl_compat); + if (pctrl_np) + if (of_device_is_available(pctrl_np)) + return; +#endif + /* gpio part1 */ gpio_base1 = ioremap(EXYNOS4_PA_GPIO1, SZ_4K); if (gpio_base1 == NULL) { |
