From 2ed5f236716cbd20f51bdc87ddd91bad259c81a6 Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Thu, 22 Nov 2012 00:21:08 +0900 Subject: ARM: EXYNOS: Detect power domain state on registration from DT Initial state of power domains might vary on different boards and with different bootloaders. This patch adds detection of initial state of power domains when being registered from DT. Signed-off-by: Tomasz Figa Signed-off-by: Kyungmin Park Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/pm_domains.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'arch/arm/mach-exynos') diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index c0bc83a7663..d1abc1a94ec 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -89,6 +89,7 @@ static __init int exynos_pm_dt_parse_domains(void) for_each_compatible_node(np, NULL, "samsung,exynos4210-pd") { struct exynos_pm_domain *pd; + int on; pd = kzalloc(sizeof(*pd), GFP_KERNEL); if (!pd) { @@ -97,14 +98,15 @@ static __init int exynos_pm_dt_parse_domains(void) return -ENOMEM; } - if (of_get_property(np, "samsung,exynos4210-pd-off", NULL)) - pd->is_off = true; pd->name = np->name; pd->base = of_iomap(np, 0); pd->pd.power_off = exynos_pd_power_off; pd->pd.power_on = exynos_pd_power_on; pd->pd.of_node = np; - pm_genpd_init(&pd->pd, NULL, false); + + on = __raw_readl(pd->base + 0x4) & S5P_INT_LOCAL_PWR_EN; + + pm_genpd_init(&pd->pd, NULL, !on); } return 0; } -- cgit v1.2.3-70-g09d2