msm: lpm-levels: Modify enter_sleep to communicate with RPM only for PC
Latency of WFI, SPC, RET increased during enter
sleep which caused significant boot delay. Modify enter_sleep
to process RPM communication only for PC.
Change-Id: I1fb3c89a904bf888b89960ea1bdd5c7f8fdc2212
Signed-off-by: Priyanka Mathur <pmathur@codeaurora.org>
diff --git a/arch/arm/mach-msm/lpm_levels.c b/arch/arm/mach-msm/lpm_levels.c
index 463f2a5..fcb4299 100644
--- a/arch/arm/mach-msm/lpm_levels.c
+++ b/arch/arm/mach-msm/lpm_levels.c
@@ -57,8 +57,6 @@
bool from_idle, bool notify_rpm)
{
int ret = 0;
- int debug_mask;
- struct msm_rpmrs_limits *l = (struct msm_rpmrs_limits *)limits;
struct msm_lpm_sleep_data sleep_data;
sleep_data.limits = limits;
@@ -66,28 +64,34 @@
atomic_notifier_call_chain(&__get_cpu_var(lpm_notify_head),
MSM_LPM_STATE_ENTER, &sleep_data);
- ret = msm_rpm_enter_sleep();
- if (ret) {
- pr_warn("%s(): RPM failed to enter sleep err:%d\n",
- __func__, ret);
- goto bail;
+ if (notify_rpm) {
+ int debug_mask;
+ struct msm_rpmrs_limits *l = (struct msm_rpmrs_limits *)limits;
+
+ ret = msm_rpm_enter_sleep();
+ if (ret) {
+ pr_warn("%s(): RPM failed to enter sleep err:%d\n",
+ __func__, ret);
+ goto bail;
+ }
+ if (from_idle)
+ debug_mask = msm_lpm_lvl_dbg_msk &
+ MSM_LPM_LVL_DBG_IDLE_LIMITS;
+ else
+ debug_mask = msm_lpm_lvl_dbg_msk &
+ MSM_LPM_LVL_DBG_SUSPEND_LIMITS;
+
+ if (debug_mask)
+ pr_info("%s(): pxo:%d l2:%d mem:0x%x(0x%x) dig:0x%x(0x%x)\n",
+ __func__, l->pxo, l->l2_cache,
+ l->vdd_mem_lower_bound,
+ l->vdd_mem_upper_bound,
+ l->vdd_dig_lower_bound,
+ l->vdd_dig_upper_bound);
+
+ ret = msm_lpmrs_enter_sleep(sclk_count, l, from_idle,
+ notify_rpm);
}
- if (from_idle)
- debug_mask = msm_lpm_lvl_dbg_msk &
- MSM_LPM_LVL_DBG_IDLE_LIMITS;
- else
- debug_mask = msm_lpm_lvl_dbg_msk &
- MSM_LPM_LVL_DBG_SUSPEND_LIMITS;
-
- if (debug_mask)
- pr_info("%s(): pxo:%d l2:%d mem:0x%x(0x%x) dig:0x%x(0x%x)\n",
- __func__, l->pxo, l->l2_cache,
- l->vdd_mem_lower_bound,
- l->vdd_mem_upper_bound,
- l->vdd_dig_lower_bound,
- l->vdd_dig_upper_bound);
-
- ret = msm_lpmrs_enter_sleep(sclk_count, l, from_idle, notify_rpm);
bail:
return ret;
}