video: driver: set PM_SUSPEND in power collapsed state

Set substate PM_SUSPEND even if
video core was already power collapsed.

Change-Id: I15740d8e44fe89c6b34c0412dca1064539cdac35
Signed-off-by: Ankush Mitra <quic_ankumitr@quicinc.com>

driver/vidc/inc/msm_vidc_driver.h

@@ -499,7 +499,7 @@ bool msm_vidc_allow_streamon(struct msm_vidc_inst *inst, u32 type);
 enum msm_vidc_allow msm_vidc_allow_input_psc(struct msm_vidc_inst *inst);
 bool msm_vidc_allow_drain_last_flag(struct msm_vidc_inst *inst);
 bool msm_vidc_allow_psc_last_flag(struct msm_vidc_inst *inst);
-bool msm_vidc_allow_pm_suspend(struct msm_vidc_core *core);
+enum msm_vidc_allow msm_vidc_allow_pm_suspend(struct msm_vidc_core *core);
 int msm_vidc_state_change_streamon(struct msm_vidc_inst *inst, u32 type);
 int msm_vidc_state_change_streamoff(struct msm_vidc_inst *inst, u32 type);
 int msm_vidc_state_change_input_psc(struct msm_vidc_inst *inst);

driver/vidc/src/msm_vidc_driver.c

@@ -1285,27 +1285,27 @@ bool msm_vidc_allow_psc_last_flag(struct msm_vidc_inst *inst)
 	return false;
 }
 
-bool msm_vidc_allow_pm_suspend(struct msm_vidc_core *core)
+enum msm_vidc_allow msm_vidc_allow_pm_suspend(struct msm_vidc_core *core)
 {
 	if (!core) {
 		d_vpr_e("%s: invalid param\n", __func__);
-		return false;
+		return MSM_VIDC_DISALLOW;
 	}
 
 	/* core must be in valid state to do pm_suspend */
 	if (!core_in_valid_state(core)) {
 		d_vpr_e("%s: invalid core state %s\n",
 			__func__, core_state_name(core->state));
-		return false;
+		return MSM_VIDC_DISALLOW;
 	}
 
 	/* check if power is enabled */
 	if (!is_core_sub_state(core, CORE_SUBSTATE_POWER_ENABLE)) {
 		d_vpr_e("%s: Power already disabled\n", __func__);
-		return false;
+		return MSM_VIDC_IGNORE;
 	}
 
-	return true;
+	return MSM_VIDC_ALLOW;
 }
 
 bool is_hevc_10bit_decode_session(struct msm_vidc_inst *inst)

driver/vidc/src/msm_vidc_probe.c

@@ -863,7 +863,7 @@ static int msm_vidc_pm_suspend(struct device *dev)
 {
 	int rc = 0;
 	struct msm_vidc_core *core;
-	bool allow = false;
+	enum msm_vidc_allow allow = MSM_VIDC_DISALLOW;
 
 	/*
 	 * Bail out if
@@ -882,8 +882,14 @@ static int msm_vidc_pm_suspend(struct device *dev)
 
 	core_lock(core, __func__);
 	allow = msm_vidc_allow_pm_suspend(core);
-	if (!allow) {
-		d_vpr_e("%s: pm suspend not allowed\n", __func__);
+
+	if (allow == MSM_VIDC_IGNORE) {
+		d_vpr_h("%s: pm already suspended\n", __func__);
+		msm_vidc_change_core_sub_state(core, 0, CORE_SUBSTATE_PM_SUSPEND, __func__);
+		rc = 0;
+		goto unlock;
+	} else if (allow != MSM_VIDC_ALLOW) {
+		d_vpr_h("%s: pm suspend not allowed\n", __func__);
 		rc = 0;
 		goto unlock;
 	}