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gpio: exynos4: skip gpiolib registration if pinctrl driver is used

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Pinctrl driver, when enabled, registers all the gpio pins and hence the
registration of gpio pins by this driver can be skipped.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Thomas Abraham 2012-09-07 06:07:19 +09:00 committed by Kukjin Kim
parent 43b169db18
commit d05866240c
1 changed files with 21 additions and 0 deletions
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21
drivers/gpio/gpio-samsung.c
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@ -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) {