From: Tero Kristo <tero.kristo@xxxxxxxxx>
OMAP3 can't generate wakeups in this state, thus it is not permitted.
Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxx>
Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-omap2/pm34xx.c | 19 ++++++++++++++-----
1 files changed, 14 insertions(+), 5 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index d8a6e10..55567bf 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -308,6 +308,7 @@ static void omap_sram_idle(void)
int core_next_state = PWRDM_POWER_ON;
int core_prev_state, per_prev_state;
u32 sdrc_pwr = 0;
+ int per_state_modified = 0;
if (!_omap_sram_idle)
return;
@@ -340,15 +341,21 @@ static void omap_sram_idle(void)
/* PER */
per_next_state = pwrdm_read_next_pwrst(per_pwrdm);
+ core_next_state = pwrdm_read_next_pwrst(core_pwrdm);
if (per_next_state < PWRDM_POWER_ON) {
- omap2_gpio_prepare_for_retention();
omap_uart_prepare_idle(2);
- if (per_next_state == PWRDM_POWER_OFF)
- omap3_per_save_context();
+ omap2_gpio_prepare_for_retention();
+ if (per_next_state == PWRDM_POWER_OFF) {
+ if (core_next_state == PWRDM_POWER_ON) {
+ per_next_state = PWRDM_POWER_RET;
+ pwrdm_set_next_pwrst(per_pwrdm, per_next_state);
+ per_state_modified = 1;
+ } else
+ omap3_per_save_context();
+ }
}
/* CORE */
- core_next_state = pwrdm_read_next_pwrst(core_pwrdm);
if (core_next_state < PWRDM_POWER_ON) {
omap_uart_prepare_idle(0);
omap_uart_prepare_idle(1);
@@ -413,10 +420,12 @@ static void omap_sram_idle(void)
/* PER */
if (per_next_state < PWRDM_POWER_ON) {
per_prev_state = pwrdm_read_prev_pwrst(per_pwrdm);
- omap_uart_resume_idle(2);
if (per_prev_state == PWRDM_POWER_OFF)
omap3_per_restore_context();
omap2_gpio_resume_after_retention();
+ omap_uart_resume_idle(2);
+ if (per_state_modified)
+ pwrdm_set_next_pwrst(per_pwrdm, PWRDM_POWER_OFF);
}
/* Disable IO-PAD wakeup */
--
1.6.4.3
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