diff options
| author | Tomasz Figa <t.figa@samsung.com> | 2012-11-07 03:44:55 +0400 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2012-11-07 04:12:11 +0400 |
| commit | ba51bdd306a21ab0fabbea3a92541af0ee9fb8f6 (patch) | |
| tree | 5da61d517f768e7a321a2ff7f9c1fc916798828f /drivers/gpio | |
| parent | ab7b51ff9e3713995fb5f5a2ded22af06aed2847 (diff) | |
| download | linux-ba51bdd306a21ab0fabbea3a92541af0ee9fb8f6.tar.xz | |
gpio: samsung: Skip registration if pinctrl driver is present on EXYNOS4X12
This patch modifies the Samsung GPIO driver to check for pinctrl driver
presence earlier and use generic matching instead of a single compatible
value.
This allows us to fix warning about unrecognized SoC in case of
EXYNOS4X12, which is not supported by this driver.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-samsung.c | 43 |
1 files changed, 22 insertions, 21 deletions
diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c index a006f0db15af..88f41e51565b 100644 --- a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@ -2797,27 +2797,6 @@ 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) { @@ -3032,6 +3011,28 @@ static __init int samsung_gpiolib_init(void) int i, nr_chips; int group = 0; +#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; + static const struct of_device_id exynos_pinctrl_ids[] = { + { .compatible = "samsung,pinctrl-exynos4210", }, + { .compatible = "samsung,pinctrl-exynos4x12", }, + }; + for_each_matching_node(pctrl_np, exynos_pinctrl_ids) + if (pctrl_np && of_device_is_available(pctrl_np)) + return -ENODEV; +#endif + samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs)); if (soc_is_s3c24xx()) { |