From: Tero Kristo <tero.kristo@xxxxxxxxx>
Following hacks will be moved inside cpuidle in subsequent patch:
- CAM domain prevents idle completely
- PER should not go OFF if core remains active
This simplifies the design and allows cpuidle to keep better track of which
power states system will actually enter.
Signed-off-by: Tero Kristo <tero.kristo@xxxxxxxxx>
---
arch/arm/mach-omap2/pm34xx.c | 18 ++----------------
1 files changed, 2 insertions(+), 16 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index dceb18f..f7bb5c7 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -93,7 +93,6 @@ static int (*_omap_save_secure_sram)(u32 *addr);
static struct powerdomain *mpu_pwrdm, *neon_pwrdm;
static struct powerdomain *core_pwrdm, *per_pwrdm;
-static struct powerdomain *cam_pwrdm;
static struct prm_setup_vc prm_setup = {
.clksetup = 0xff,
@@ -373,7 +372,6 @@ 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;
@@ -411,20 +409,11 @@ void omap_sram_idle(void)
core_next_state = pwrdm_read_next_pwrst(core_pwrdm);
if (per_next_state < PWRDM_POWER_ON) {
omap2_gpio_prepare_for_idle(per_next_state);
- 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();
- }
+ if (per_next_state == PWRDM_POWER_OFF)
+ omap3_per_save_context();
omap_uart_prepare_idle(2);
}
- if (pwrdm_read_pwrst(cam_pwrdm) == PWRDM_POWER_ON)
- omap2_clkdm_deny_idle(mpu_pwrdm->pwrdm_clkdms[0]);
-
/*
* Disable smartreflex before entering WFI.
* Only needed if we are going to enter retention or off.
@@ -554,8 +543,6 @@ void omap_sram_idle(void)
}
omap2_gpio_resume_after_idle();
omap_uart_resume_idle(2);
- if (per_state_modified)
- pwrdm_set_next_pwrst(per_pwrdm, PWRDM_POWER_OFF);
}
/* Disable IO-PAD and IO-CHAIN wakeup */
@@ -1175,7 +1162,6 @@ static int __init omap3_pm_init(void)
neon_pwrdm = pwrdm_lookup("neon_pwrdm");
per_pwrdm = pwrdm_lookup("per_pwrdm");
core_pwrdm = pwrdm_lookup("core_pwrdm");
- cam_pwrdm = pwrdm_lookup("cam_pwrdm");
omap_push_sram_idle();
#ifdef CONFIG_SUSPEND
--
1.5.4.3
--
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