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| author | Tero Kristo <tero.kristo@nokia.com> | 2008-12-01 13:17:29 +0200 |
|---|---|---|
| committer | Kevin Hilman <khilman@deeprootsystems.com> | 2009-11-11 14:42:28 -0800 |
| commit | ecf157d0b38953cdefa2c8fb7ccb5a62db242aef (patch) | |
| tree | eaffb96276d8e7443dcc76ef1ec7d9b383b8e82f /arch | |
| parent | 658ce97ef57f4c0737bfcb76050400b53389ed6b (diff) | |
| download | blackbird-op-linux-ecf157d0b38953cdefa2c8fb7ccb5a62db242aef.tar.gz blackbird-op-linux-ecf157d0b38953cdefa2c8fb7ccb5a62db242aef.zip | |
OMAP3: PM: Prevent PER from going OFF when CORE is going INA
OMAP3 can't generate wakeups in this state, thus it is not permitted.
Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | 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 d8a6e10ac315..55567bf5ccbf 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 */ |
