From 8ac561dc84c127cb1e8cba89fcd29150a82d6a9f Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Tue, 5 Apr 2011 15:22:31 +0530 Subject: OMAP2+: clockdomain: Add an api to read idle mode Add a clockdomain api to check if hardware supervised idle transitions are enabled on a clockdomain. Signed-off-by: Rajendra Nayak --- arch/arm/mach-omap2/clockdomain.c | 21 +++++++++++++++++++++ arch/arm/mach-omap2/clockdomain.h | 3 +++ 2 files changed, 24 insertions(+) diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c index 0e9aa16..b98a972 100644 --- a/arch/arm/mach-omap2/clockdomain.c +++ b/arch/arm/mach-omap2/clockdomain.c @@ -795,6 +795,27 @@ void clkdm_deny_idle(struct clockdomain *clkdm) arch_clkdm->clkdm_deny_idle(clkdm); } +/** + * clkdm_is_idle - Check if the clkdm hwsup/autoidle is enabled + * @clkdm: struct clockdomain * + * + * Returns true if the clockdomain is in hardware-supervised + * idle mode, or 0 otherwise. + * + */ +int clkdm_is_idle(struct clockdomain *clkdm) +{ + if (!clkdm) + return -EINVAL; + + if (!arch_clkdm || !arch_clkdm->clkdm_is_idle) + return -EINVAL; + + pr_debug("clockdomain: reading idle state for %s\n", clkdm->name); + + return arch_clkdm->clkdm_is_idle(clkdm); +} + /* Clockdomain-to-clock framework interface code */ diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h index 5823584..085ed82 100644 --- a/arch/arm/mach-omap2/clockdomain.h +++ b/arch/arm/mach-omap2/clockdomain.h @@ -138,6 +138,7 @@ struct clockdomain { * @clkdm_wakeup: Force a clockdomain to wakeup * @clkdm_allow_idle: Enable hw supervised idle transitions for clock domain * @clkdm_deny_idle: Disable hw supervised idle transitions for clock domain + * @clkdm_is_idle: Check if hw supervised idle transitions are enabled * @clkdm_clk_enable: Put the clkdm in right state for a clock enable * @clkdm_clk_disable: Put the clkdm in right state for a clock disable */ @@ -154,6 +155,7 @@ struct clkdm_ops { int (*clkdm_wakeup)(struct clockdomain *clkdm); void (*clkdm_allow_idle)(struct clockdomain *clkdm); void (*clkdm_deny_idle)(struct clockdomain *clkdm); + int (*clkdm_is_idle)(struct clockdomain *clkdm); int (*clkdm_clk_enable)(struct clockdomain *clkdm); int (*clkdm_clk_disable)(struct clockdomain *clkdm); }; @@ -177,6 +179,7 @@ int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm); void clkdm_allow_idle(struct clockdomain *clkdm); void clkdm_deny_idle(struct clockdomain *clkdm); +int clkdm_is_idle(struct clockdomain *clkdm); int clkdm_wakeup(struct clockdomain *clkdm); int clkdm_sleep(struct clockdomain *clkdm); -- cgit v1.1