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| author | Kevin Hilman <khilman@deeprootsystems.com> | 2008-11-04 20:50:52 -0800 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2009-11-11 14:42:28 -0800 |
| commit | 658ce97ef57f4c0737bfcb76050400b53389ed6b (patch) | |
| tree | a204beddeafd77c9b6f763d616bb05f928aad5c2 /arch | |
| parent | d7814e4df6e9c54680a30de3f439c66a2a55ce94 (diff) | |
| download | blackbird-op-linux-658ce97ef57f4c0737bfcb76050400b53389ed6b.tar.gz blackbird-op-linux-658ce97ef57f4c0737bfcb76050400b53389ed6b.zip | |
OMAP3: PM: decouple PER and CORE context save and restore
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/pm34xx.c | 51 |
1 files changed, 29 insertions, 22 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index ff818aaec6c5..d8a6e10ac315 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(); } |
