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authorKevin Hilman <khilman@deeprootsystems.com>2008-11-04 20:50:52 -0800
committerKevin Hilman <khilman@deeprootsystems.com>2009-11-11 14:42:28 -0800
commit658ce97ef57f4c0737bfcb76050400b53389ed6b (patch)
treea204beddeafd77c9b6f763d616bb05f928aad5c2 /arch/arm/mach-omap2/pm34xx.c
parentd7814e4df6e9c54680a30de3f439c66a2a55ce94 (diff)
OMAP3: PM: decouple PER and CORE context save and restore
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.c51
1 files changed, 29 insertions, 22 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index ff818aaec6c..d8a6e10ac31 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -338,19 +338,20 @@ static void omap_sram_idle(void)
if (pwrdm_read_pwrst(neon_pwrdm) == PWRDM_POWER_ON)
set_pwrdm_state(neon_pwrdm, mpu_next_state);
- /* CORE & PER */
+ /* PER */
+ per_next_state = pwrdm_read_next_pwrst(per_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();
+ }
+
+ /* CORE */
core_next_state = pwrdm_read_next_pwrst(core_pwrdm);
if (core_next_state < PWRDM_POWER_ON) {
- omap2_gpio_prepare_for_retention();
omap_uart_prepare_idle(0);
omap_uart_prepare_idle(1);
- /* PER changes only with core */
- per_next_state = pwrdm_read_next_pwrst(per_pwrdm);
- if (per_next_state < PWRDM_POWER_ON) {
- omap_uart_prepare_idle(2);
- if (per_next_state == PWRDM_POWER_OFF)
- omap3_per_save_context();
- }
if (core_next_state == PWRDM_POWER_OFF) {
omap3_core_save_context();
omap3_prcm_save_context();
@@ -392,14 +393,8 @@ static void omap_sram_idle(void)
if (pwrdm_read_prev_pwrst(mpu_pwrdm) == PWRDM_POWER_OFF)
restore_table_entry();
+ /* CORE */
if (core_next_state < PWRDM_POWER_ON) {
- if (per_next_state < PWRDM_POWER_ON)
- omap_uart_resume_idle(2);
- omap_uart_resume_idle(1);
- omap_uart_resume_idle(0);
-
- /* Disable IO-PAD wakeup */
- prm_clear_mod_reg_bits(OMAP3430_EN_IO, WKUP_MOD, PM_WKEN);
core_prev_state = pwrdm_read_prev_pwrst(core_pwrdm);
if (core_prev_state == PWRDM_POWER_OFF) {
omap3_core_restore_context();
@@ -407,15 +402,27 @@ static void omap_sram_idle(void)
omap3_sram_restore_context();
omap2_sms_restore_context();
}
- if (per_next_state < PWRDM_POWER_ON) {
- per_prev_state =
- pwrdm_read_prev_pwrst(per_pwrdm);
- if (per_prev_state == PWRDM_POWER_OFF)
- omap3_per_restore_context();
- }
+ omap_uart_resume_idle(0);
+ omap_uart_resume_idle(1);
+ if (core_next_state == PWRDM_POWER_OFF)
+ prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF,
+ OMAP3430_GR_MOD,
+ OMAP3_PRM_VOLTCTRL_OFFSET);
+ }
+
+ /* 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();
}
+ /* Disable IO-PAD wakeup */
+ if (core_next_state < PWRDM_POWER_ON)
+ prm_clear_mod_reg_bits(OMAP3430_EN_IO, WKUP_MOD, PM_WKEN);
+
pwrdm_post_transition();
}