disp: msm: add runtime_pm ops support in drm driver

Add runtime_pm ops support in drm driver instead
of direct sde_power_resource_enable/disable call.
It allows drm driver to use runtime pm refcount logic
to track the resources instead of custom implementation.
The change also removes the NRT_CLIENT support from
sde_power_handle code to simplify it further.

Change-Id: Ib14692dca5876703d0a230da2512d731b69b8ebb
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>

msm/sde/sde_crtc.c

@@ -120,35 +120,6 @@ static inline struct drm_encoder *_sde_crtc_get_encoder(struct drm_crtc *crtc)
 	return NULL;
 }
 
-static inline int _sde_crtc_power_enable(struct sde_crtc *sde_crtc, bool enable)
-{
-	struct drm_crtc *crtc;
-	struct msm_drm_private *priv;
-	struct sde_kms *sde_kms;
-
-	if (!sde_crtc) {
-		SDE_ERROR("invalid sde crtc\n");
-		return -EINVAL;
-	}
-
-	crtc = &sde_crtc->base;
-	if (!crtc->dev || !crtc->dev->dev_private) {
-		SDE_ERROR("invalid drm device\n");
-		return -EINVAL;
-	}
-
-	priv = crtc->dev->dev_private;
-	if (!priv->kms) {
-		SDE_ERROR("invalid kms\n");
-		return -EINVAL;
-	}
-
-	sde_kms = to_sde_kms(priv->kms);
-
-	return sde_power_resource_enable(&priv->phandle, sde_kms->core_client,
-									enable);
-}
-
 /**
  * sde_crtc_calc_fps() - Calculates fps value.
  * @sde_crtc   : CRTC structure
@@ -3666,9 +3637,9 @@ static int _sde_crtc_vblank_enable_no_lock(
 
 		/* drop lock since power crtc cb may try to re-acquire lock */
 		mutex_unlock(&sde_crtc->crtc_lock);
-		ret = _sde_crtc_power_enable(sde_crtc, true);
+		ret = pm_runtime_get_sync(crtc->dev->dev);
 		mutex_lock(&sde_crtc->crtc_lock);
-		if (ret)
+		if (ret < 0)
 			return ret;
 
 		list_for_each_entry(enc, &dev->mode_config.encoder_list, head) {
@@ -3698,7 +3669,7 @@ static int _sde_crtc_vblank_enable_no_lock(
 
 		/* drop lock since power crtc cb may try to re-acquire lock */
 		mutex_unlock(&sde_crtc->crtc_lock);
-		_sde_crtc_power_enable(sde_crtc, false);
+		pm_runtime_put_sync(crtc->dev->dev);
 		mutex_lock(&sde_crtc->crtc_lock);
 	}
 
@@ -5539,13 +5510,13 @@ static ssize_t _sde_crtc_misr_setup(struct file *file,
 		return -EINVAL;
 	}
 
-	rc = _sde_crtc_power_enable(sde_crtc, true);
-	if (rc)
+	rc = pm_runtime_get_sync(crtc->dev->dev);
+	if (rc < 0)
 		return rc;
 
 	sde_crtc->misr_enable_debugfs = enable;
 	sde_crtc_misr_setup(crtc, enable, frame_count);
-	_sde_crtc_power_enable(sde_crtc, false);
+	pm_runtime_put_sync(crtc->dev->dev);
 
 	return count;
 }
@@ -5573,8 +5544,8 @@ static ssize_t _sde_crtc_misr_read(struct file *file,
 	if (!sde_kms)
 		return -EINVAL;
 
-	rc = _sde_crtc_power_enable(sde_crtc, true);
-	if (rc)
+	rc = pm_runtime_get_sync(crtc->dev->dev);
+	if (rc < 0)
 		return rc;
 
 	if (sde_kms_is_secure_session_inprogress(sde_kms)) {
@@ -5628,7 +5599,7 @@ buff_check:
 	*ppos += len;   /* increase offset */
 
 end:
-	_sde_crtc_power_enable(sde_crtc, false);
+	pm_runtime_put_sync(crtc->dev->dev);
 	return len;
 }
 
@@ -6110,7 +6081,6 @@ static int _sde_crtc_event_enable(struct sde_kms *kms,
 {
 	struct sde_crtc *crtc = NULL;
 	struct sde_crtc_irq_info *node;
-	struct msm_drm_private *priv;
 	unsigned long flags;
 	bool found = false;
 	int ret, i = 0;
@@ -6151,13 +6121,10 @@ static int _sde_crtc_event_enable(struct sde_kms *kms,
 		return -EINVAL;
 	}
 
-	priv = kms->dev->dev_private;
 	ret = 0;
 	if (crtc_drm->enabled) {
-		ret = sde_power_resource_enable(&priv->phandle,
-				kms->core_client, true);
-		if (ret) {
-			SDE_ERROR("failed to enable power resource %d\n", ret);
+		ret = pm_runtime_get_sync(crtc_drm->dev->dev);
+		if (ret < 0) {
 			SDE_EVT32(ret, SDE_EVTLOG_ERROR);
 			kfree(node);
 			return ret;
@@ -6175,8 +6142,7 @@ static int _sde_crtc_event_enable(struct sde_kms *kms,
 		}
 		mutex_unlock(&crtc->crtc_lock);
 
-		sde_power_resource_enable(&priv->phandle, kms->core_client,
-				false);
+		pm_runtime_put_sync(crtc_drm->dev->dev);
 	}
 
 	if (add_event)
@@ -6198,7 +6164,6 @@ static int _sde_crtc_event_disable(struct sde_kms *kms,
 {
 	struct sde_crtc *crtc = NULL;
 	struct sde_crtc_irq_info *node = NULL;
-	struct msm_drm_private *priv;
 	unsigned long flags;
 	bool found = false;
 	int ret;
@@ -6226,9 +6191,8 @@ static int _sde_crtc_event_disable(struct sde_kms *kms,
 		kfree(node);
 		return 0;
 	}
-	priv = kms->dev->dev_private;
-	ret = sde_power_resource_enable(&priv->phandle, kms->core_client, true);
-	if (ret) {
+	ret = pm_runtime_get_sync(crtc_drm->dev->dev);
+	if (ret < 0) {
 		SDE_ERROR("failed to enable power resource %d\n", ret);
 		SDE_EVT32(ret, SDE_EVTLOG_ERROR);
 		kfree(node);
@@ -6237,7 +6201,7 @@ static int _sde_crtc_event_disable(struct sde_kms *kms,
 
 	ret = node->func(crtc_drm, false, &node->irq);
 	kfree(node);
-	sde_power_resource_enable(&priv->phandle, kms->core_client, false);
+	pm_runtime_put_sync(crtc_drm->dev->dev);
 	return ret;
 }