In omap3 gpios 2-6 are in per domain. Clocks for these should be
disabled. This patch is needed until gpio driver disables gpio clocks
when they are not needed.
Signed-off-by: Jouni Hogander <[EMAIL PROTECTED]>
---
arch/arm/mach-omap2/pm34xx.c | 48 +++++++++++++++++++++++++++++++++++++++++-
1 files changed, 47 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index a1bfb30..1826dcd 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -52,6 +52,34 @@ static void (*saved_idle)(void);
static struct powerdomain *mpu_pwrdm;
+/* XXX This is for gpio fclk hack. Will be removed as gpio driver
+ * handles fcks correctly */
+#define NUM_OF_PERGPIOS 5
+static struct clk *gpio_fcks[NUM_OF_PERGPIOS];
+static struct clk *gpio_icks[NUM_OF_PERGPIOS];
+
+/* XXX This is for gpio fclk hack. Will be removed as gpio driver
+ * handles fcks correctly */
+static void per_gpio_clk_enable(void)
+{
+ int i;
+ for (i = 1; i < NUM_OF_PERGPIOS + 1; i++) {
+ clk_enable(gpio_icks[i-1]);
+ clk_enable(gpio_fcks[i-1]);
+ }
+}
+
+/* XXX This is for gpio fclk hack. Will be removed as gpio driver
+ * handles fcks correctly */
+static void per_gpio_clk_disable(void)
+{
+ int i;
+ for (i = 1; i < NUM_OF_PERGPIOS + 1; i++) {
+ clk_disable(gpio_fcks[i-1]);
+ clk_disable(gpio_icks[i-1]);
+ }
+}
+
/* PRCM Interrupt Handler for wakeups */
static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id)
{
@@ -165,8 +193,16 @@ static void omap_sram_idle(void)
omap2_gpio_prepare_for_retention();
+ /* XXX This is for gpio fclk hack. Will be removed as gpio driver
+ * handles fcks correctly */
+ per_gpio_clk_disable();
+
_omap_sram_idle(NULL, save_state);
+ /* XXX This is for gpio fclk hack. Will be removed as gpio driver
+ * handles fcks correctly */
+ per_gpio_clk_enable();
+
omap2_gpio_resume_after_retention();
}
@@ -340,7 +376,8 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm)
int __init omap3_pm_init(void)
{
struct power_state *pwrst;
- int ret;
+ char clk_name[11];
+ int ret, i;
printk(KERN_ERR "Power Management for TI OMAP3.\n");
@@ -374,6 +411,15 @@ int __init omap3_pm_init(void)
pm_idle = omap3_pm_idle;
+ /* XXX This is for gpio fclk hack. Will be removed as gpio driver
+ * handles fcks correctly */
+ for (i = 1; i < NUM_OF_PERGPIOS + 1; i++) {
+ sprintf(clk_name, "gpio%d_fck", i + 1);
+ gpio_fcks[i-1] = clk_get(NULL, clk_name);
+ sprintf(clk_name, "gpio%d_ick", i + 1);
+ gpio_icks[i-1] = clk_get(NULL, clk_name);
+ }
+
err1:
return ret;
err2:
--
1.5.5
--
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