From 76640b84bd7a9d68c70d8bc8ecd02cdc4bd8855e Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Thu, 19 Jan 2017 14:48:41 +0100 Subject: [PATCH] soc: samsung: pmu: Provide global function to get PMU regmap PMU is something like a SoC wide service, so add a helper function to get PMU regmap. This will be used by other Exynos device drivers. This way it can be avoided to model this dependency in device tree (as phandles to PMU node) for almost every device in the SoC. Signed-off-by: Marek Szyprowski Reviewed-by: Tomasz Figa Signed-off-by: Krzysztof Kozlowski --- drivers/soc/samsung/exynos-pmu.c | 11 +++++++++++ include/linux/soc/samsung/exynos-pmu.h | 10 ++++++++++ 2 files changed, 21 insertions(+) diff --git a/drivers/soc/samsung/exynos-pmu.c b/drivers/soc/samsung/exynos-pmu.c index 0acdfd8..5c269bf 100644 --- a/drivers/soc/samsung/exynos-pmu.c +++ b/drivers/soc/samsung/exynos-pmu.c @@ -11,6 +11,7 @@ #include #include +#include #include #include @@ -92,6 +93,16 @@ static const struct of_device_id exynos_pmu_of_device_ids[] = { { /*sentinel*/ }, }; +struct regmap *exynos_get_pmu_regmap(void) +{ + struct device_node *np = of_find_matching_node(NULL, + exynos_pmu_of_device_ids); + if (np) + return syscon_node_to_regmap(np); + return ERR_PTR(-ENODEV); +} +EXPORT_SYMBOL_GPL(exynos_get_pmu_regmap); + static int exynos_pmu_probe(struct platform_device *pdev) { const struct of_device_id *match; diff --git a/include/linux/soc/samsung/exynos-pmu.h b/include/linux/soc/samsung/exynos-pmu.h index e2e9de1..e57eb4b 100644 --- a/include/linux/soc/samsung/exynos-pmu.h +++ b/include/linux/soc/samsung/exynos-pmu.h @@ -12,6 +12,8 @@ #ifndef __LINUX_SOC_EXYNOS_PMU_H #define __LINUX_SOC_EXYNOS_PMU_H +struct regmap; + enum sys_powerdown { SYS_AFTR, SYS_LPA, @@ -20,5 +22,13 @@ enum sys_powerdown { }; extern void exynos_sys_powerdown_conf(enum sys_powerdown mode); +#ifdef CONFIG_EXYNOS_PMU +extern struct regmap *exynos_get_pmu_regmap(void); +#else +static inline struct regmap *exynos_get_pmu_regmap(void) +{ + return ERR_PTR(-ENODEV); +} +#endif #endif /* __LINUX_SOC_EXYNOS_PMU_H */ -- 2.7.4