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From 988f50cb51d18e81ed2f7673a09694d28c9d086a Mon Sep 17 00:00:00 2001
From: Rajendra Nayak <rnayak@ti.com>
Date: Tue, 5 Apr 2011 15:22:31 +0530
Subject: [PATCH 1/6] 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 <rnayak@ti.com>
---
arch/arm/mach-omap2/clockdomain.c | 21 +++++++++++++++++++++
arch/arm/mach-omap2/clockdomain.h | 3 +++
2 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index 6cb6c03..2ab3686 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);
--
1.6.6.1
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