We do not support MPU OSWR on OMAP3. Get rid of the complex/multiple
save_state handling in omap_sram_idle() and just use 2 save_state
definitions
save_state = 1, all logic and memory lost, MPU hits OFF
save_state = 0, nothing lost, MPU hits CSWR or shallower state
Signed-off-by: Rajendra Nayak <rnayak@xxxxxx>
---
arch/arm/mach-omap2/pm34xx.c | 35 +++++++++--------------------------
arch/arm/mach-omap2/sleep34xx.S | 4 +---
2 files changed, 10 insertions(+), 29 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 7c7b173..8d96b1f 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -256,19 +256,16 @@ static void omap34xx_save_context(u32 *save)
static int omap34xx_do_sram_idle(unsigned long save_state)
{
+ /*
+ * save_state = 1 indicates all logic and memory/cache lost
+ * save_state = 0 indicates nothing lost
+ */
omap34xx_cpu_suspend(save_state);
return 0;
}
void omap_sram_idle(void)
{
- /* Variable to tell what needs to be saved and restored
- * in omap_sram_idle*/
- /* save_state = 0 => Nothing to save and restored */
- /* save_state = 1 => Only L1 and logic lost */
- /* save_state = 2 => Only L2 lost */
- /* save_state = 3 => L1, L2 and logic lost */
- int save_state = 0;
int mpu_next_state = PWRDM_POWER_ON;
int per_next_state = PWRDM_POWER_ON;
int core_next_state = PWRDM_POWER_ON;
@@ -277,20 +274,6 @@ void omap_sram_idle(void)
u32 sdrc_pwr = 0;
mpu_next_state = pwrdm_read_next_pwrst(mpu_pwrdm);
- switch (mpu_next_state) {
- case PWRDM_POWER_ON:
- case PWRDM_POWER_RET:
- /* No need to save context */
- save_state = 0;
- break;
- case PWRDM_POWER_OFF:
- save_state = 3;
- break;
- default:
- /* Invalid state */
- pr_err("Invalid mpu state in sram_idle\n");
- return;
- }
/* NEON control */
if (pwrdm_read_pwrst(neon_pwrdm) == PWRDM_POWER_ON)
@@ -342,12 +325,12 @@ void omap_sram_idle(void)
* get saved. The rest is placed on the stack, and restored
* from there before resuming.
*/
- if (save_state)
+ if (mpu_next_state == PWRDM_POWER_OFF) {
omap34xx_save_context(omap3_arm_context);
- if (save_state == 1 || save_state == 3)
- cpu_suspend(save_state, omap34xx_do_sram_idle);
- else
- omap34xx_do_sram_idle(save_state);
+ cpu_suspend(1, omap34xx_do_sram_idle);
+ } else {
+ omap34xx_do_sram_idle(0);
+ }
/* Restore normal SDRC POWER settings */
if (cpu_is_omap3430() && omap_rev() >= OMAP3430_REV_ES3_0 &&
diff --git a/arch/arm/mach-omap2/sleep34xx.S b/arch/arm/mach-omap2/sleep34xx.S
index 1f62f23..a4d04a4 100644
--- a/arch/arm/mach-omap2/sleep34xx.S
+++ b/arch/arm/mach-omap2/sleep34xx.S
@@ -157,9 +157,7 @@ ENTRY(omap34xx_cpu_suspend)
/*
* r0 contains information about saving context:
* 0 - No context lost
- * 1 - Only L1 and logic lost
- * 2 - Only L2 lost (Even L1 is retained we clean it along with L2)
- * 3 - Both L1 and L2 lost and logic lost
+ * 1 - Both L1 and L2 lost and logic lost
*/
/*
--
1.7.1
--
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