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authorKevin Hilman <khilman@deeprootsystems.com>2009-10-06 14:25:09 -0700
committerKevin Hilman <khilman@deeprootsystems.com>2009-11-11 14:42:27 -0800
commitc40552bc82166adb21a1a7fcb1dc4e76352b1b79 (patch)
tree3625838f286478e88ccc3a3be09b1c330149106c /arch/arm/mach-omap2/pm34xx.c
parent89139dce8a0060d97a46cebde570a8f55c314712 (diff)
OMAP3: PM debug: allow runtime toggle of PM features
Allow enable/disable of low-power states during idle. To enable low-power idle: echo 1 > /debug/pm_debug/sleep_while_idle to disable: echo 0 > /debug/pm_debug/sleep_while_idle Also allow enable/disable of OFF-mode. To enable: echo 1 > /debug/pm_debug/enable_off_mode to disable: echo 0 > /debug/pm_debug/enable_off_mode Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-omap2/pm34xx.c')
-rw-r--r--arch/arm/mach-omap2/pm34xx.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 90d1dc5884e..ade2e4a6bb7 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -25,6 +25,7 @@
#include <linux/list.h>
#include <linux/err.h>
#include <linux/gpio.h>
+#include <linux/clk.h>
#include <plat/sram.h>
#include <plat/clockdomain.h>
@@ -57,6 +58,9 @@
#define OMAP343X_TABLE_VALUE_OFFSET 0x30
#define OMAP343X_CONTROL_REG_VALUE_OFFSET 0x32
+u32 enable_off_mode;
+u32 sleep_while_idle;
+
struct power_state {
struct powerdomain *pwrdm;
u32 next_state;
@@ -456,6 +460,8 @@ static int omap3_fclks_active(void)
static int omap3_can_sleep(void)
{
+ if (!sleep_while_idle)
+ return 0;
if (!omap_uart_can_sleep())
return 0;
if (omap3_fclks_active())
@@ -900,6 +906,22 @@ static void __init prcm_setup_regs(void)
omap3_d2d_idle();
}
+void omap3_pm_off_mode_enable(int enable)
+{
+ struct power_state *pwrst;
+ u32 state;
+
+ if (enable)
+ state = PWRDM_POWER_OFF;
+ else
+ state = PWRDM_POWER_RET;
+
+ list_for_each_entry(pwrst, &pwrst_list, node) {
+ pwrst->next_state = state;
+ set_pwrdm_state(pwrst->pwrdm, state);
+ }
+}
+
int omap3_pm_get_suspend_state(struct powerdomain *pwrdm)
{
struct power_state *pwrst;