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 <[email protected]>

msm/dp/dp_display.c

@@ -1213,7 +1213,8 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		goto error_power;
 	}
 
-	rc = dp->power->power_client_init(dp->power, &dp->priv->phandle);
+	rc = dp->power->power_client_init(dp->power, &dp->priv->phandle,
+		dp->dp_display.drm_dev);
 	if (rc) {
 		pr_err("Power client create failed\n");
 		goto error_aux;

msm/dp/dp_power.c

@@ -6,6 +6,8 @@
 #define pr_fmt(fmt)	"[drm-dp] %s: " fmt, __func__
 
 #include <linux/clk.h>
+#include <linux/pm_runtime.h>
+#include <drm/drmP.h>
 #include "dp_power.h"
 #include "dp_catalog.h"
 
@@ -20,8 +22,6 @@ struct dp_power_private {
 	struct clk *pixel1_parent;
 
 	struct dp_power dp_power;
-	struct sde_power_client *dp_core_client;
-	struct sde_power_handle *phandle;
 
 	bool core_clks_on;
 	bool link_clks_on;
@@ -458,14 +458,13 @@ static int dp_power_config_gpios(struct dp_power_private *power, bool flip,
 }
 
 static int dp_power_client_init(struct dp_power *dp_power,
-		struct sde_power_handle *phandle)
+	struct sde_power_handle *phandle, struct drm_device *drm_dev)
 {
 	int rc = 0;
 	struct dp_power_private *power;
-	char dp_client_name[DP_CLIENT_NAME_SIZE];
 
-	if (!dp_power) {
-		pr_err("invalid power data\n");
+	if (!drm_dev) {
+		pr_err("invalid drm_dev\n");
 		return -EINVAL;
 	}
 
@@ -482,20 +481,11 @@ static int dp_power_client_init(struct dp_power *dp_power,
 		pr_err("failed to init clocks\n");
 		goto error_clk;
 	}
+	dp_power->phandle = phandle;
+	dp_power->drm_dev = drm_dev;
 
-	power->phandle = phandle;
-	snprintf(dp_client_name, DP_CLIENT_NAME_SIZE, "dp_core_client");
-	power->dp_core_client = sde_power_client_create(phandle,
-			dp_client_name);
-	if (IS_ERR_OR_NULL(power->dp_core_client)) {
-		pr_err("[%s] client creation failed for DP\n", dp_client_name);
-		rc = -EINVAL;
-		goto error_client;
-	}
 	return 0;
 
-error_client:
-	dp_power_clk_init(power, false);
 error_clk:
 	dp_power_regulator_deinit(power);
 error_power:
@@ -513,7 +503,6 @@ static void dp_power_client_deinit(struct dp_power *dp_power)
 
 	power = container_of(dp_power, struct dp_power_private, dp_power);
 
-	sde_power_client_destroy(power->phandle, power->dp_core_client);
 	dp_power_clk_init(power, false);
 	dp_power_regulator_deinit(power);
 }
@@ -559,7 +548,7 @@ static u64 dp_power_clk_get_rate(struct dp_power *dp_power, char *clk_name)
 	}
 
 	power = container_of(dp_power, struct dp_power_private, dp_power);
-	mp = &power->phandle->mp;
+	mp = &dp_power->phandle->mp;
 	for (i = 0; i < mp->num_clk; i++) {
 		if (!strcmp(mp->clk_config[i].clk_name, clk_name)) {
 			rate = clk_get_rate(mp->clk_config[i].clk);
@@ -613,9 +602,8 @@ static int dp_power_init(struct dp_power *dp_power, bool flip)
 		goto err_gpio;
 	}
 
-	rc = sde_power_resource_enable(power->phandle,
-		power->dp_core_client, true);
-	if (rc) {
+	rc = pm_runtime_get_sync(dp_power->drm_dev->dev);
+	if (rc < 0) {
 		pr_err("Power resource enable failed\n");
 		goto err_sde_power;
 	}
@@ -629,7 +617,7 @@ static int dp_power_init(struct dp_power *dp_power, bool flip)
 	return 0;
 
 err_clk:
-	sde_power_resource_enable(power->phandle, power->dp_core_client, false);
+	pm_runtime_put_sync(dp_power->drm_dev->dev);
 err_sde_power:
 	dp_power_config_gpios(power, flip, false);
 err_gpio:
@@ -657,13 +645,8 @@ static int dp_power_deinit(struct dp_power *dp_power)
 		dp_power_clk_enable(dp_power, DP_LINK_PM, false);
 
 	dp_power_clk_enable(dp_power, DP_CORE_PM, false);
+	pm_runtime_put_sync(dp_power->drm_dev->dev);
 
-	rc = sde_power_resource_enable(power->phandle,
-			power->dp_core_client, false);
-	if (rc) {
-		pr_err("Power resource disable failed, rc=%d\n", rc);
-		goto exit;
-	}
 	dp_power_config_gpios(power, false, false);
 	dp_power_pinctrl_set(power, false);
 	dp_power_regulator_ctrl(power, false);

msm/dp/dp_power.h

@@ -19,6 +19,8 @@
  * @clk_get_rate: get the current rate for provided clk_name
  */
 struct dp_power {
+	struct drm_device *drm_dev;
+	struct sde_power_handle *phandle;
 	int (*init)(struct dp_power *power, bool flip);
 	int (*deinit)(struct dp_power *power);
 	int (*clk_enable)(struct dp_power *power, enum dp_pm_type pm_type,
@@ -26,7 +28,8 @@ struct dp_power {
 	int (*set_pixel_clk_parent)(struct dp_power *power, u32 stream_id);
 	u64 (*clk_get_rate)(struct dp_power *power, char *clk_name);
 	int (*power_client_init)(struct dp_power *power,
-				struct sde_power_handle *phandle);
+		struct sde_power_handle *phandle,
+		struct drm_device *drm_dev);
 	void (*power_client_deinit)(struct dp_power *power);
 };
 

msm/dsi/dsi_clk.h

@@ -10,7 +10,7 @@
 #include <linux/platform_device.h>
 #include <linux/types.h>
 #include <linux/clk.h>
-#include "sde_power_handle.h"
+#include <drm/drmP.h>
 
 #define MAX_STRING_LEN 32
 #define MAX_DSI_CTRL 2
@@ -72,8 +72,7 @@ struct clk_ctrl_cb {
  * @core_mmss_clk:       Handle to MMSS core clock.
  * @bus_clk:             Handle to bus clock.
  * @mnoc_clk:            Handle to MMSS NOC clock.
- * @dsi_core_client:	 Pointer to SDE power client
- * @phandle:             Pointer to SDE power handle
+ * @drm:                 Pointer to drm device node
  */
 struct dsi_core_clk_info {
 	struct clk *mdp_core_clk;
@@ -81,8 +80,7 @@ struct dsi_core_clk_info {
 	struct clk *core_mmss_clk;
 	struct clk *bus_clk;
 	struct clk *mnoc_clk;
-	struct sde_power_client *dsi_core_client;
-	struct sde_power_handle *phandle;
+	struct drm_device *drm;
 };
 
 /**

msm/dsi/dsi_clk_manager.c

@@ -7,6 +7,7 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/msm-bus.h>
+#include <linux/pm_runtime.h>
 #include "dsi_clk.h"
 
 struct dsi_core_clks {
@@ -554,10 +555,9 @@ static int dsi_display_core_clk_enable(struct dsi_core_clks *clks,
 	 */
 
 	m_clks = &clks[master_ndx];
-	rc = sde_power_resource_enable(m_clks->clks.phandle,
-			m_clks->clks.dsi_core_client, true);
 
-	if (rc) {
+	rc = pm_runtime_get_sync(m_clks->clks.drm->dev);
+	if (rc < 0) {
 		pr_err("Power resource enable failed, rc=%d\n", rc);
 		goto error;
 	}
@@ -574,9 +574,8 @@ static int dsi_display_core_clk_enable(struct dsi_core_clks *clks,
 		if (!clk || (clk == m_clks))
 			continue;
 
-		rc = sde_power_resource_enable(clk->clks.phandle,
-				clk->clks.dsi_core_client, true);
-		if (rc) {
+		rc = pm_runtime_get_sync(m_clks->clks.drm->dev);
+		if (rc < 0) {
 			pr_err("Power resource enable failed, rc=%d\n", rc);
 			goto error_disable_master;
 		}
@@ -584,8 +583,7 @@ static int dsi_display_core_clk_enable(struct dsi_core_clks *clks,
 		rc = dsi_core_clk_start(clk);
 		if (rc) {
 			pr_err("failed to turn on clocks, rc=%d\n", rc);
-			(void)sde_power_resource_enable(clk->clks.phandle,
-					clk->clks.dsi_core_client, false);
+			pm_runtime_put_sync(m_clks->clks.drm->dev);
 			goto error_disable_master;
 		}
 	}
@@ -594,8 +592,7 @@ error_disable_master:
 	(void)dsi_core_clk_stop(m_clks);
 
 error_disable_master_resource:
-	(void)sde_power_resource_enable(m_clks->clks.phandle,
-				m_clks->clks.dsi_core_client, false);
+	pm_runtime_put_sync(m_clks->clks.drm->dev);
 error:
 	return rc;
 }
@@ -697,12 +694,7 @@ static int dsi_display_core_clk_disable(struct dsi_core_clks *clks,
 			goto error;
 		}
 
-		rc = sde_power_resource_enable(clk->clks.phandle,
-				clk->clks.dsi_core_client, false);
-		if (rc) {
-			pr_err("Power resource disable failed: %d\n", rc);
-			goto error;
-		}
+		pm_runtime_put_sync(m_clks->clks.drm->dev);
 	}
 
 	rc = dsi_core_clk_stop(m_clks);
@@ -711,10 +703,7 @@ static int dsi_display_core_clk_disable(struct dsi_core_clks *clks,
 		goto error;
 	}
 
-	rc = sde_power_resource_enable(m_clks->clks.phandle,
-				m_clks->clks.dsi_core_client, false);
-	if (rc)
-		pr_err("Power resource disable failed: %d\n", rc);
+	pm_runtime_put_sync(m_clks->clks.drm->dev);
 error:
 	return rc;
 }

msm/dsi/dsi_display.c

@@ -4105,20 +4105,15 @@ int dsi_display_cont_splash_config(void *dsi_display)
 		return -EINVAL;
 	}
 
-	mutex_lock(&display->display_lock);
-
-	/* Vote for gdsc required to read register address space */
-	display->cont_splash_client = sde_power_client_create(display->phandle,
-						"cont_splash_client");
-	rc = sde_power_resource_enable(display->phandle,
-			display->cont_splash_client, true);
-	if (rc) {
+	rc = pm_runtime_get_sync(display->drm_dev->dev);
+	if (rc < 0) {
 		pr_err("failed to vote gdsc for continuous splash, rc=%d\n",
 							rc);
-		mutex_unlock(&display->display_lock);
-		return -EINVAL;
+		return rc;
 	}
 
+	mutex_lock(&display->display_lock);
+
 	/* Verify whether continuous splash is enabled or not */
 	display->is_cont_splash_enabled =
 		dsi_display_get_cont_splash_status(display);
@@ -4172,8 +4167,7 @@ clk_manager_update:
 				false);
 
 splash_disabled:
-	(void)sde_power_resource_enable(display->phandle,
-			display->cont_splash_client, false);
+	pm_runtime_put_sync(display->drm_dev->dev);
 	display->is_cont_splash_enabled = false;
 	mutex_unlock(&display->display_lock);
 	return rc;
@@ -4197,11 +4191,7 @@ int dsi_display_splash_res_cleanup(struct  dsi_display *display)
 		pr_err("[%s] failed to disable DSI link clocks, rc=%d\n",
 		       display->name, rc);
 
-	rc = sde_power_resource_enable(display->phandle,
-			display->cont_splash_client, false);
-	if (rc)
-		pr_err("failed to remove vote on gdsc for continuous splash, rc=%d\n",
-				rc);
+	pm_runtime_put_sync(display->drm_dev->dev);
 
 	display->is_cont_splash_enabled = false;
 	/* Update splash status for clock manager */
@@ -4448,12 +4438,10 @@ static int dsi_display_bind(struct device *dev,
 	struct dsi_display *display;
 	struct dsi_clk_info info;
 	struct clk_ctrl_cb clk_cb;
-	struct msm_drm_private *priv;
 	void *handle = NULL;
 	struct platform_device *pdev = to_platform_device(dev);
 	char *client1 = "dsi_clk_client";
 	char *client2 = "mdp_event_client";
-	char dsi_client_name[DSI_CLIENT_NAME_SIZE];
 	int i, rc = 0;
 
 	if (!dev || !pdev || !master) {
@@ -4469,7 +4457,6 @@ static int dsi_display_bind(struct device *dev,
 				drm, display);
 		return -EINVAL;
 	}
-	priv = drm->dev_private;
 	if (!display->panel_node)
 		return 0;
 
@@ -4522,22 +4509,12 @@ static int dsi_display_bind(struct device *dev,
 				(&display_ctrl->ctrl->clk_info.lp_link_clks),
 				sizeof(struct dsi_link_lp_clk_info));
 
-		info.c_clks[i].phandle = &priv->phandle;
+		info.c_clks[i].drm = drm;
 		info.bus_handle[i] =
 			display_ctrl->ctrl->axi_bus_info.bus_handle;
 		info.ctrl_index[i] = display_ctrl->ctrl->cell_index;
-		snprintf(dsi_client_name, DSI_CLIENT_NAME_SIZE,
-						"dsi_core_client%u", i);
-		info.c_clks[i].dsi_core_client = sde_power_client_create(
-				info.c_clks[i].phandle, dsi_client_name);
-		if (IS_ERR_OR_NULL(info.c_clks[i].dsi_core_client)) {
-			pr_err("[%s] client creation failed for ctrl[%d]\n",
-					dsi_client_name, i);
-			goto error_ctrl_deinit;
-		}
 	}
 
-	display->phandle = &priv->phandle;
 	info.pre_clkoff_cb = dsi_pre_clkoff_cb;
 	info.pre_clkon_cb = dsi_pre_clkon_cb;
 	info.post_clkoff_cb = dsi_post_clkoff_cb;

msm/dsi/dsi_display.h

@@ -239,9 +239,6 @@ struct dsi_display {
 	struct dsi_bridge    *bridge;
 	u32 cmd_engine_refcount;
 
-	struct sde_power_handle *phandle;
-	struct sde_power_client *cont_splash_client;
-
 	void *clk_mngr;
 	void *dsi_clk_handle;
 	void *mdp_clk_handle;

msm/msm_drv.c

@@ -401,7 +401,6 @@ static int msm_drm_uninit(struct device *dev)
 	sde_dbg_destroy();
 	debugfs_remove_recursive(priv->debug_root);
 
-	sde_power_client_destroy(&priv->phandle, priv->pclient);
 	sde_power_resource_deinit(pdev, &priv->phandle);
 
 	msm_mdss_destroy(ddev);
@@ -535,11 +534,6 @@ static int msm_component_bind_all(struct device *dev,
 }
 #endif
 
-static int msm_power_enable_wrapper(void *handle, void *client, bool enable)
-{
-	return sde_power_resource_enable(handle, client, enable);
-}
-
 static int msm_drm_display_thread_create(struct sched_param param,
 	struct msm_drm_private *priv, struct drm_device *ddev,
 	struct device *dev)
@@ -703,7 +697,6 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
 	struct drm_device *ddev;
 	struct msm_drm_private *priv;
 	struct msm_kms *kms = NULL;
-	struct sde_dbg_power_ctrl dbg_power_ctrl = { 0 };
 	int ret;
 	struct sched_param param = { 0 };
 
@@ -741,17 +734,7 @@ static int msm_drm_init(struct device *dev, struct drm_driver *drv)
 		goto power_init_fail;
 	}
 
-	priv->pclient = sde_power_client_create(&priv->phandle, "sde");
-	if (IS_ERR_OR_NULL(priv->pclient)) {
-		pr_err("sde power client create failed\n");
-		ret = -EINVAL;
-		goto power_client_fail;
-	}
-
-	dbg_power_ctrl.handle = &priv->phandle;
-	dbg_power_ctrl.client = priv->pclient;
-	dbg_power_ctrl.enable_fn = msm_power_enable_wrapper;
-	ret = sde_dbg_init(&pdev->dev, &dbg_power_ctrl);
+	ret = sde_dbg_init(&pdev->dev);
 	if (ret) {
 		dev_err(dev, "failed to init sde dbg: %d\n", ret);
 		goto dbg_init_fail;
@@ -851,8 +834,6 @@ fail:
 bind_fail:
 	sde_dbg_destroy();
 dbg_init_fail:
-	sde_power_client_destroy(&priv->phandle, priv->pclient);
-power_client_fail:
 	sde_power_resource_deinit(pdev, &priv->phandle);
 power_init_fail:
 	msm_mdss_destroy(ddev);
@@ -927,8 +908,7 @@ static void msm_postclose(struct drm_device *dev, struct drm_file *file)
 	mutex_lock(&ctx->power_lock);
 	if (ctx->enable_refcnt) {
 		SDE_EVT32(ctx->enable_refcnt);
-		sde_power_resource_enable(&priv->phandle,
-				priv->pclient, false);
+		pm_runtime_put_sync(dev->dev);
 	}
 	mutex_unlock(&ctx->power_lock);
 
@@ -1602,10 +1582,12 @@ int msm_ioctl_power_ctrl(struct drm_device *dev, void *data,
 	}
 
 	if (vote_req) {
-		rc = sde_power_resource_enable(&priv->phandle,
-				priv->pclient, power_ctrl->enable);
+		if (power_ctrl->enable)
+			rc = pm_runtime_get_sync(dev->dev);
+		else
+			pm_runtime_put_sync(dev->dev);
 
-		if (rc)
+		if (rc < 0)
 			ctx->enable_refcnt = old_cnt;
 	}
 
@@ -1756,7 +1738,9 @@ static int msm_runtime_suspend(struct device *dev)
 	DBG("");
 
 	if (priv->mdss)
-		return msm_mdss_disable(priv->mdss);
+		msm_mdss_disable(priv->mdss);
+	else
+		sde_power_resource_enable(&priv->phandle, false);
 
 	return 0;
 }
@@ -1765,13 +1749,16 @@ static int msm_runtime_resume(struct device *dev)
 {
 	struct drm_device *ddev = dev_get_drvdata(dev);
 	struct msm_drm_private *priv = ddev->dev_private;
+	int ret;
 
 	DBG("");
 
 	if (priv->mdss)
-		return msm_mdss_enable(priv->mdss);
+		ret = msm_mdss_enable(priv->mdss);
+	else
+		ret = sde_power_resource_enable(&priv->phandle, true);
 
-	return 0;
+	return ret;
 }
 #endif
 

msm/msm_drv.h

@@ -560,7 +560,6 @@ struct msm_drm_private {
 	struct msm_kms *kms;
 
 	struct sde_power_handle phandle;
-	struct sde_power_client *pclient;
 
 	/* subordinate devices, if present: */
 	struct platform_device *gpu_pdev;

msm/sde/sde_color_processing.c

@@ -2193,8 +2193,8 @@ static void sde_cp_notify_ad_event(struct drm_crtc *crtc_drm, void *arg)
 	}
 
 	priv = kms->dev->dev_private;
-	ret = sde_power_resource_enable(&priv->phandle, kms->core_client, true);
-	if (ret) {
+	ret = pm_runtime_get_sync(kms->dev->dev);
+	if (ret < 0) {
 		SDE_ERROR("failed to enable power resource %d\n", ret);
 		SDE_EVT32(ret, SDE_EVTLOG_ERROR);
 		return;
@@ -2203,8 +2203,7 @@ static void sde_cp_notify_ad_event(struct drm_crtc *crtc_drm, void *arg)
 	hw_dspp->ops.ad_read_intr_resp(hw_dspp, AD4_IN_OUT_BACKLIGHT,
 			&input_bl, &output_bl);
 
-	sde_power_resource_enable(&priv->phandle, kms->core_client,
-					false);
+	pm_runtime_put_sync(kms->dev->dev);
 	if (!input_bl || input_bl < output_bl)
 		return;
 
@@ -2426,7 +2425,6 @@ static void sde_cp_notify_hist_event(struct drm_crtc *crtc_drm, void *arg)
 	struct sde_crtc *crtc;
 	struct drm_event event;
 	struct drm_msm_hist *hist_data;
-	struct msm_drm_private *priv;
 	struct sde_kms *kms;
 	int ret;
 	u32 i;
@@ -2451,9 +2449,8 @@ static void sde_cp_notify_hist_event(struct drm_crtc *crtc_drm, void *arg)
 		return;
 	}
 
-	priv = kms->dev->dev_private;
-	ret = sde_power_resource_enable(&priv->phandle, kms->core_client, true);
-	if (ret) {
+	ret = pm_runtime_get_sync(kms->dev->dev);
+	if (ret < 0) {
 		SDE_ERROR("failed to enable power resource %d\n", ret);
 		SDE_EVT32(ret, SDE_EVTLOG_ERROR);
 		return;
@@ -2467,15 +2464,13 @@ static void sde_cp_notify_hist_event(struct drm_crtc *crtc_drm, void *arg)
 		if (!hw_dspp || !hw_dspp->ops.read_histogram) {
 			DRM_ERROR("invalid dspp %pK or read_histogram func\n",
 				hw_dspp);
-			sde_power_resource_enable(&priv->phandle,
-						kms->core_client, false);
+			pm_runtime_put_sync(kms->dev->dev);
 			return;
 		}
 		hw_dspp->ops.read_histogram(hw_dspp, hist_data);
 	}
 
-	sde_power_resource_enable(&priv->phandle, kms->core_client,
-					false);
+	pm_runtime_put_sync(kms->dev->dev);
 	/* send histogram event with blob id */
 	event.length = sizeof(u32);
 	event.type = DRM_EVENT_HISTOGRAM;

msm/sde/sde_core_irq.c

@@ -441,25 +441,16 @@ void sde_debugfs_core_irq_destroy(struct sde_kms *sde_kms)
 
 void sde_core_irq_preinstall(struct sde_kms *sde_kms)
 {
-	struct msm_drm_private *priv;
 	int i;
 	int rc;
 
-	if (!sde_kms) {
-		SDE_ERROR("invalid sde_kms\n");
-		return;
-	} else if (!sde_kms->dev) {
-		SDE_ERROR("invalid drm device\n");
-		return;
-	} else if (!sde_kms->dev->dev_private) {
-		SDE_ERROR("invalid device private\n");
+	if (!sde_kms || !sde_kms->dev) {
+		SDE_ERROR("invalid sde_kms or dev\n");
 		return;
 	}
-	priv = sde_kms->dev->dev_private;
 
-	rc = sde_power_resource_enable(&priv->phandle, sde_kms->core_client,
-			true);
-	if (rc) {
+	rc = pm_runtime_get_sync(sde_kms->dev->dev);
+	if (rc < 0) {
 		SDE_ERROR("failed to enable power resource %d\n", rc);
 		SDE_EVT32(rc, SDE_EVTLOG_ERROR);
 		return;
@@ -467,7 +458,7 @@ void sde_core_irq_preinstall(struct sde_kms *sde_kms)
 
 	sde_clear_all_irqs(sde_kms);
 	sde_disable_all_irqs(sde_kms);
-	sde_power_resource_enable(&priv->phandle, sde_kms->core_client, false);
+	pm_runtime_put_sync(sde_kms->dev->dev);
 
 	spin_lock_init(&sde_kms->irq_obj.cb_lock);
 
@@ -493,26 +484,17 @@ int sde_core_irq_postinstall(struct sde_kms *sde_kms)
 
 void sde_core_irq_uninstall(struct sde_kms *sde_kms)
 {
-	struct msm_drm_private *priv;
 	int i;
 	int rc;
 	unsigned long irq_flags;
 
-	if (!sde_kms) {
-		SDE_ERROR("invalid sde_kms\n");
-		return;
-	} else if (!sde_kms->dev) {
-		SDE_ERROR("invalid drm device\n");
-		return;
-	} else if (!sde_kms->dev->dev_private) {
-		SDE_ERROR("invalid device private\n");
+	if (!sde_kms || !sde_kms->dev) {
+		SDE_ERROR("invalid sde_kms or dev\n");
 		return;
 	}
-	priv = sde_kms->dev->dev_private;
 
-	rc = sde_power_resource_enable(&priv->phandle, sde_kms->core_client,
-			true);
-	if (rc) {
+	rc = pm_runtime_get_sync(sde_kms->dev->dev);
+	if (rc < 0) {
 		SDE_ERROR("failed to enable power resource %d\n", rc);
 		SDE_EVT32(rc, SDE_EVTLOG_ERROR);
 		return;
@@ -525,7 +507,7 @@ void sde_core_irq_uninstall(struct sde_kms *sde_kms)
 
 	sde_clear_all_irqs(sde_kms);
 	sde_disable_all_irqs(sde_kms);
-	sde_power_resource_enable(&priv->phandle, sde_kms->core_client, false);
+	pm_runtime_put_sync(sde_kms->dev->dev);
 
 	spin_lock_irqsave(&sde_kms->irq_obj.cb_lock, irq_flags);
 	kfree(sde_kms->irq_obj.irq_cb_tbl);

msm/sde/sde_core_perf.c

@@ -638,17 +638,8 @@ static void _sde_core_perf_crtc_update_bus(struct sde_kms *kms,
 
 	client_vote = _get_sde_client_type(curr_client_type, &kms->perf);
 	switch (client_vote) {
-	case NRT_CLIENT:
-		sde_power_data_bus_set_quota(&priv->phandle, kms->core_client,
-				SDE_POWER_HANDLE_DATA_BUS_CLIENT_NRT,
-				bus_id, bus_ab_quota, bus_ib_quota);
-		SDE_DEBUG("client:%s bus_id=%d ab=%llu ib=%llu\n", "nrt",
-				bus_id, bus_ab_quota, bus_ib_quota);
-		break;
-
 	case RT_CLIENT:
-		sde_power_data_bus_set_quota(&priv->phandle, kms->core_client,
-				SDE_POWER_HANDLE_DATA_BUS_CLIENT_RT,
+		sde_power_data_bus_set_quota(&priv->phandle,
 				bus_id, bus_ab_quota, bus_ib_quota);
 		SDE_DEBUG("client:%s bus_id=%d ab=%llu ib=%llu\n", "rt",
 				bus_id, bus_ab_quota, bus_ib_quota);
@@ -671,12 +662,6 @@ static void _sde_core_perf_crtc_update_bus(struct sde_kms *kms,
 		switch (kms->perf.bw_vote_mode) {
 		case DISP_RSC_MODE:
 			sde_power_data_bus_set_quota(&priv->phandle,
-				kms->core_client,
-				SDE_POWER_HANDLE_DATA_BUS_CLIENT_NRT,
-				bus_id, 0, 0);
-			sde_power_data_bus_set_quota(&priv->phandle,
-				kms->core_client,
-				SDE_POWER_HANDLE_DATA_BUS_CLIENT_RT,
 				bus_id, 0, 0);
 			kms->perf.bw_vote_mode_updated = false;
 			break;
@@ -1212,10 +1197,9 @@ int sde_core_perf_init(struct sde_core_perf *perf,
 		struct drm_device *dev,
 		struct sde_mdss_cfg *catalog,
 		struct sde_power_handle *phandle,
-		struct sde_power_client *pclient,
 		char *clk_name)
 {
-	if (!perf || !dev || !catalog || !phandle || !pclient || !clk_name) {
+	if (!perf || !dev || !catalog || !phandle || !clk_name) {
 		SDE_ERROR("invalid parameters\n");
 		return -EINVAL;
 	}
@@ -1223,7 +1207,6 @@ int sde_core_perf_init(struct sde_core_perf *perf,
 	perf->dev = dev;
 	perf->catalog = catalog;
 	perf->phandle = phandle;
-	perf->pclient = pclient;
 	perf->clk_name = clk_name;
 	perf->sde_rsc_available = is_sde_rsc_available(SDE_RSC_INDEX);
 	/* set default mode */

msm/sde/sde_core_perf.h

@@ -60,7 +60,6 @@ struct sde_core_perf_tune {
  * @debugfs_root: top level debug folder
  * @catalog: Pointer to catalog configuration
  * @phandle: Pointer to power handler
- * @pclient: Pointer to power client
  * @clk_name: core clock name
  * @core_clk: Pointer to core clock structure
  * @core_clk_rate: current core clock rate
@@ -81,7 +80,6 @@ struct sde_core_perf {
 	struct dentry *debugfs_root;
 	struct sde_mdss_cfg *catalog;
 	struct sde_power_handle *phandle;
-	struct sde_power_client *pclient;
 	char *clk_name;
 	struct clk *core_clk;
 	u64 core_clk_rate;
@@ -141,14 +139,12 @@ void sde_core_perf_destroy(struct sde_core_perf *perf);
  * @dev: Pointer to drm device
  * @catalog: Pointer to catalog
  * @phandle: Pointer to power handle
- * @pclient: Pointer to power client
  * @clk_name: core clock name
  */
 int sde_core_perf_init(struct sde_core_perf *perf,
 		struct drm_device *dev,
 		struct sde_mdss_cfg *catalog,
 		struct sde_power_handle *phandle,
-		struct sde_power_client *pclient,
 		char *clk_name);
 
 /**

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;
 }
 

msm/sde/sde_crtc.h

@@ -595,7 +595,7 @@ enum sde_intf_mode sde_crtc_get_intf_mode(struct drm_crtc *crtc);
 u32 sde_crtc_get_fps_mode(struct drm_crtc *crtc);
 
 /**
- * sde_crtc_get_client_type - check the crtc type- rt, nrt, rsc, etc.
+ * sde_crtc_get_client_type - check the crtc type- rt, rsc_rt, etc.
  * @crtc: Pointer to crtc
  */
 static inline enum sde_crtc_client_type sde_crtc_get_client_type(
@@ -605,10 +605,9 @@ static inline enum sde_crtc_client_type sde_crtc_get_client_type(
 			crtc ? to_sde_crtc_state(crtc->state) : NULL;
 
 	if (!cstate)
-		return NRT_CLIENT;
+		return RT_CLIENT;
 
-	return sde_crtc_get_intf_mode(crtc) == INTF_MODE_WB_LINE ? NRT_CLIENT :
-			(cstate->rsc_client ? RT_RSC_CLIENT : RT_CLIENT);
+	return cstate->rsc_client ? RT_RSC_CLIENT : RT_CLIENT;
 }
 
 /**

msm/sde/sde_encoder.c

@@ -417,36 +417,6 @@ int sde_encoder_in_cont_splash(struct drm_encoder *drm_enc)
 		sde_enc->cur_master->cont_splash_enabled;
 }
 
-static inline int _sde_encoder_power_enable(struct sde_encoder_virt *sde_enc,
-								bool enable)
-{
-	struct drm_encoder *drm_enc;
-	struct msm_drm_private *priv;
-	struct sde_kms *sde_kms;
-
-	if (!sde_enc) {
-		SDE_ERROR("invalid sde enc\n");
-		return -EINVAL;
-	}
-
-	drm_enc = &sde_enc->base;
-	if (!drm_enc->dev || !drm_enc->dev->dev_private) {
-		SDE_ERROR("drm device invalid\n");
-		return -EINVAL;
-	}
-
-	priv = drm_enc->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);
-}
-
 void sde_encoder_helper_report_irq_timeout(struct sde_encoder_phys *phys_enc,
 		enum sde_intr_idx intr_idx)
 {
@@ -2082,9 +2052,8 @@ static int _sde_encoder_resource_control_helper(struct drm_encoder *drm_enc,
 
 	if (enable) {
 		/* enable SDE core clks */
-		rc = sde_power_resource_enable(&priv->phandle,
-				sde_kms->core_client, true);
-		if (rc) {
+		rc = pm_runtime_get_sync(drm_enc->dev->dev);
+		if (rc < 0) {
 			SDE_ERROR("failed to enable power resource %d\n", rc);
 			SDE_EVT32(rc, SDE_EVTLOG_ERROR);
 			return rc;
@@ -2096,8 +2065,7 @@ static int _sde_encoder_resource_control_helper(struct drm_encoder *drm_enc,
 				true);
 		if (rc) {
 			SDE_ERROR("failed to enable clk control %d\n", rc);
-			sde_power_resource_enable(&priv->phandle,
-					sde_kms->core_client, false);
+			pm_runtime_put_sync(drm_enc->dev->dev);
 			return rc;
 		}
 
@@ -2118,8 +2086,7 @@ static int _sde_encoder_resource_control_helper(struct drm_encoder *drm_enc,
 		sde_connector_clk_ctrl(sde_enc->cur_master->connector, false);
 
 		/* disable SDE core clks */
-		sde_power_resource_enable(&priv->phandle,
-				sde_kms->core_client, false);
+		pm_runtime_put_sync(drm_enc->dev->dev);
 	}
 
 	return 0;
@@ -3949,7 +3916,6 @@ static void _sde_encoder_kickoff_phys(struct sde_encoder_virt *sde_enc)
 			sde_kms = to_sde_kms(priv->kms);
 			if (sde_kms != NULL) {
 				sde_power_scale_reg_bus(&priv->phandle,
-						sde_kms->core_client,
 						VOTE_INDEX_LOW,
 						false);
 			}
@@ -4350,14 +4316,16 @@ static void sde_encoder_vsync_event_work_handler(struct kthread_work *work)
 	bool autorefresh_enabled = false;
 	int rc = 0;
 	ktime_t wakeup_time;
+	struct drm_encoder *drm_enc;
 
 	if (!sde_enc) {
 		SDE_ERROR("invalid sde encoder\n");
 		return;
 	}
 
-	rc = _sde_encoder_power_enable(sde_enc, true);
-	if (rc) {
+	drm_enc = &sde_enc->base;
+	rc = pm_runtime_get_sync(drm_enc->dev->dev);
+	if (rc < 0) {
 		SDE_ERROR_ENC(sde_enc, "sde enc power enabled failed:%d\n", rc);
 		return;
 	}
@@ -4381,7 +4349,7 @@ static void sde_encoder_vsync_event_work_handler(struct kthread_work *work)
 			nsecs_to_jiffies(ktime_to_ns(wakeup_time)));
 
 exit:
-	_sde_encoder_power_enable(sde_enc, false);
+	pm_runtime_put_sync(drm_enc->dev->dev);
 }
 
 int sde_encoder_poll_line_counts(struct drm_encoder *drm_enc)
@@ -4932,6 +4900,7 @@ static ssize_t _sde_encoder_misr_setup(struct file *file,
 	u32 frame_count, enable;
 	struct msm_drm_private *priv = NULL;
 	struct sde_kms *sde_kms = NULL;
+	struct drm_encoder *drm_enc;
 
 	if (!file || !file->private_data)
 		return -EINVAL;
@@ -4942,6 +4911,7 @@ static ssize_t _sde_encoder_misr_setup(struct file *file,
 		return -EINVAL;
 
 	sde_kms = to_sde_kms(priv->kms);
+	drm_enc = &sde_enc->base;
 
 	if (sde_kms_is_secure_session_inprogress(sde_kms)) {
 		SDE_DEBUG_ENC(sde_enc, "misr enable/disable not allowed\n");
@@ -4957,14 +4927,14 @@ static ssize_t _sde_encoder_misr_setup(struct file *file,
 	if (sscanf(buf, "%u %u", &enable, &frame_count) != 2)
 		return -EINVAL;
 
-	rc = _sde_encoder_power_enable(sde_enc, true);
-	if (rc)
+	rc = pm_runtime_get_sync(drm_enc->dev->dev);
+	if (rc < 0)
 		return rc;
 
 	sde_enc->misr_enable = enable;
 	sde_enc->misr_frame_count = frame_count;
 	sde_encoder_misr_configure(&sde_enc->base, enable, frame_count);
-	_sde_encoder_power_enable(sde_enc, false);
+	pm_runtime_put_sync(drm_enc->dev->dev);
 	return count;
 }
 
@@ -4974,6 +4944,7 @@ static ssize_t _sde_encoder_misr_read(struct file *file,
 	struct sde_encoder_virt *sde_enc;
 	struct msm_drm_private *priv = NULL;
 	struct sde_kms *sde_kms = NULL;
+	struct drm_encoder *drm_enc;
 	int i = 0, len = 0;
 	char buf[MISR_BUFF_SIZE + 1] = {'\0'};
 	int rc;
@@ -4993,9 +4964,10 @@ static ssize_t _sde_encoder_misr_read(struct file *file,
 		SDE_DEBUG_ENC(sde_enc, "misr read not allowed\n");
 		return -ENOTSUPP;
 	}
+	drm_enc = &sde_enc->base;
 
-	rc = _sde_encoder_power_enable(sde_enc, true);
-	if (rc)
+	rc = pm_runtime_get_sync(drm_enc->dev->dev);
+	if (rc < 0)
 		return rc;
 
 	if (!sde_enc->misr_enable) {
@@ -5045,7 +5017,7 @@ buff_check:
 	*ppos += len;   /* increase offset */
 
 end:
-	_sde_encoder_power_enable(sde_enc, false);
+	pm_runtime_put_sync(drm_enc->dev->dev);
 	return len;
 }
 

msm/sde/sde_kms.c

@@ -398,14 +398,11 @@ end:
 static int _sde_kms_sui_misr_ctrl(struct sde_kms *sde_kms,
 		struct drm_crtc *crtc, bool enable)
 {
-	struct drm_device *dev = sde_kms->dev;
-	struct msm_drm_private *priv = dev->dev_private;
 	int ret;
 
 	if (enable) {
-		ret = sde_power_resource_enable(&priv->phandle,
-					sde_kms->core_client, true);
-		if (ret) {
+		ret = pm_runtime_get_sync(sde_kms->dev->dev);
+		if (ret < 0) {
 			SDE_ERROR("failed to enable resource, ret:%d\n", ret);
 			return ret;
 		}
@@ -414,16 +411,14 @@ static int _sde_kms_sui_misr_ctrl(struct sde_kms *sde_kms,
 
 		ret = _sde_kms_secure_ctrl_xin_clients(sde_kms, crtc, true);
 		if (ret) {
-			sde_power_resource_enable(&priv->phandle,
-					sde_kms->core_client, false);
+			pm_runtime_put_sync(sde_kms->dev->dev);
 			return ret;
 		}
 
 	} else {
 		_sde_kms_secure_ctrl_xin_clients(sde_kms, crtc, false);
 		sde_crtc_misr_setup(crtc, false, 0);
-		sde_power_resource_enable(&priv->phandle,
-					sde_kms->core_client, false);
+		pm_runtime_put_sync(sde_kms->dev->dev);
 	}
 
 	return 0;
@@ -783,7 +778,7 @@ static void sde_kms_prepare_commit(struct msm_kms *kms,
 	struct drm_encoder *encoder;
 	struct drm_crtc *crtc;
 	struct drm_crtc_state *crtc_state;
-	int i, rc = 0;
+	int i, rc;
 
 	if (!kms)
 		return;
@@ -795,17 +790,15 @@ static void sde_kms_prepare_commit(struct msm_kms *kms,
 	priv = dev->dev_private;
 
 	SDE_ATRACE_BEGIN("prepare_commit");
-	rc = sde_power_resource_enable(&priv->phandle, sde_kms->core_client,
-			true);
-	if (rc) {
-		SDE_ERROR("failed to enable power resource %d\n", rc);
+	rc = pm_runtime_get_sync(sde_kms->dev->dev);
+	if (rc < 0) {
+		SDE_ERROR("failed to enable power resources %d\n", rc);
 		SDE_EVT32(rc, SDE_EVTLOG_ERROR);
 		goto end;
 	}
 
 	if (sde_kms->first_kickoff) {
-		sde_power_scale_reg_bus(&priv->phandle, sde_kms->core_client,
-			VOTE_INDEX_HIGH, false);
+		sde_power_scale_reg_bus(&priv->phandle, VOTE_INDEX_HIGH, false);
 		sde_kms->first_kickoff = false;
 	}
 
@@ -894,20 +887,16 @@ static void _sde_kms_release_splash_resource(struct sde_kms *sde_kms,
 		SDE_DEBUG("cont_splash handoff done for dpy:%d remaining:%d\n",
 				i, sde_kms->splash_data.num_splash_displays);
 		memset(splash_display, 0x0, sizeof(struct sde_splash_display));
-
 	}
 
 	/* remove the votes if all displays are done with splash */
 	if (!sde_kms->splash_data.num_splash_displays) {
 		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++)
-			sde_power_data_bus_set_quota(&priv->phandle,
-					sde_kms->core_client,
-					SDE_POWER_HANDLE_DATA_BUS_CLIENT_RT, i,
-					SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA,
-					SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
+			sde_power_data_bus_set_quota(&priv->phandle, i,
+				SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA,
+				SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
 
-		sde_power_resource_enable(&priv->phandle,
-				sde_kms->core_client, false);
+		pm_runtime_put_sync(sde_kms->dev->dev);
 	}
 }
 
@@ -930,7 +919,7 @@ static void sde_kms_complete_commit(struct msm_kms *kms,
 		return;
 	priv = sde_kms->dev->dev_private;
 
-	if (!sde_kms_power_resource_is_enabled(sde_kms->dev)) {
+	if (sde_kms_power_resource_is_enabled(sde_kms->dev) < 0) {
 		SDE_ERROR("power resource is not enabled\n");
 		return;
 	}
@@ -959,7 +948,7 @@ static void sde_kms_complete_commit(struct msm_kms *kms,
 		}
 	}
 
-	sde_power_resource_enable(&priv->phandle, sde_kms->core_client, false);
+	pm_runtime_put_sync(sde_kms->dev->dev);
 
 	for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i)
 		_sde_kms_release_splash_resource(sde_kms, crtc);
@@ -1662,10 +1651,6 @@ static void _sde_kms_hw_destroy(struct sde_kms *sde_kms,
 		sde_hw_catalog_deinit(sde_kms->catalog);
 	sde_kms->catalog = NULL;
 
-	if (sde_kms->core_client)
-		sde_power_client_destroy(&priv->phandle, sde_kms->core_client);
-	sde_kms->core_client = NULL;
-
 	if (sde_kms->sid)
 		msm_iounmap(pdev, sde_kms->sid);
 	sde_kms->sid = NULL;
@@ -2898,23 +2883,15 @@ static void sde_kms_handle_power_event(u32 event_type, void *usr)
 static int sde_kms_pd_enable(struct generic_pm_domain *genpd)
 {
 	struct sde_kms *sde_kms = genpd_to_sde_kms(genpd);
-	struct drm_device *dev;
-	struct msm_drm_private *priv;
-	int rc;
+	int rc = -EINVAL;
 
 	SDE_DEBUG("\n");
 
-	dev = sde_kms->dev;
-	if (!dev)
-		return -EINVAL;
-
-	priv = dev->dev_private;
-	if (!priv)
-		return -EINVAL;
-
-	SDE_EVT32(genpd->device_count);
+	rc = pm_runtime_get_sync(sde_kms->dev->dev);
+	if (rc > 0)
+		rc = 0;
 
-	rc = sde_power_resource_enable(&priv->phandle, priv->pclient, true);
+	SDE_EVT32(rc, genpd->device_count);
 
 	return rc;
 }
@@ -2922,25 +2899,14 @@ static int sde_kms_pd_enable(struct generic_pm_domain *genpd)
 static int sde_kms_pd_disable(struct generic_pm_domain *genpd)
 {
 	struct sde_kms *sde_kms = genpd_to_sde_kms(genpd);
-	struct drm_device *dev;
-	struct msm_drm_private *priv;
-	int rc;
 
 	SDE_DEBUG("\n");
 
-	dev = sde_kms->dev;
-	if (!dev)
-		return -EINVAL;
-
-	priv = dev->dev_private;
-	if (!priv)
-		return -EINVAL;
+	pm_runtime_put_sync(sde_kms->dev->dev);
 
 	SDE_EVT32(genpd->device_count);
 
-	rc = sde_power_resource_enable(&priv->phandle, priv->pclient, false);
-
-	return rc;
+	return 0;
 }
 
 static int _sde_kms_get_splash_data(struct sde_splash_data *data)
@@ -3155,9 +3121,7 @@ static int _sde_kms_hw_init_blocks(struct sde_kms *sde_kms,
 	int i, rc = -EINVAL;
 
 	for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++)
-		sde_power_data_bus_set_quota(&priv->phandle,
-			sde_kms->core_client,
-			SDE_POWER_HANDLE_DATA_BUS_CLIENT_RT, i,
+		sde_power_data_bus_set_quota(&priv->phandle, i,
 			SDE_POWER_HANDLE_CONT_SPLASH_BUS_AB_QUOTA,
 			SDE_POWER_HANDLE_CONT_SPLASH_BUS_IB_QUOTA);
 
@@ -3281,7 +3245,7 @@ static int _sde_kms_hw_init_blocks(struct sde_kms *sde_kms,
 	}
 
 	rc = sde_core_perf_init(&sde_kms->perf, dev, sde_kms->catalog,
-			&priv->phandle, priv->pclient, "core_clk");
+			&priv->phandle, "core_clk");
 	if (rc) {
 		SDE_ERROR("failed to init perf %d\n", rc);
 		goto perf_err;
@@ -3339,23 +3303,12 @@ static int sde_kms_hw_init(struct msm_kms *kms)
 	if (rc)
 		goto error;
 
-	sde_kms->core_client = sde_power_client_create(&priv->phandle, "core");
-	if (IS_ERR_OR_NULL(sde_kms->core_client)) {
-		rc = PTR_ERR(sde_kms->core_client);
-		if (!sde_kms->core_client)
-			rc = -EINVAL;
-		SDE_ERROR("sde power client create failed: %d\n", rc);
-		sde_kms->core_client = NULL;
-		goto error;
-	}
-
 	rc = _sde_kms_get_splash_data(&sde_kms->splash_data);
 	if (rc)
 		SDE_DEBUG("sde splash data fetch failed: %d\n", rc);
 
-	rc = sde_power_resource_enable(&priv->phandle, sde_kms->core_client,
-		true);
-	if (rc) {
+	rc = pm_runtime_get_sync(sde_kms->dev->dev);
+	if (rc < 0) {
 		SDE_ERROR("resource enable failed: %d\n", rc);
 		goto error;
 	}
@@ -3391,19 +3344,16 @@ static int sde_kms_hw_init(struct msm_kms *kms)
 		SDE_DEBUG("Skipping MDP Resources disable\n");
 	} else {
 		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++)
-			sde_power_data_bus_set_quota(&priv->phandle,
-				sde_kms->core_client,
-				SDE_POWER_HANDLE_DATA_BUS_CLIENT_RT, i,
+			sde_power_data_bus_set_quota(&priv->phandle, i,
 				SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA,
 				SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
 
-		sde_power_resource_enable(&priv->phandle,
-						sde_kms->core_client, false);
+		pm_runtime_put_sync(sde_kms->dev->dev);
 	}
 	return 0;
 
 hw_init_err:
-	sde_power_resource_enable(&priv->phandle, sde_kms->core_client, false);
+	pm_runtime_put_sync(sde_kms->dev->dev);
 error:
 	_sde_kms_hw_destroy(sde_kms, platformdev);
 end:

msm/sde/sde_kms.h

@@ -238,8 +238,6 @@ struct sde_kms {
 	bool genpd_init;
 
 	struct msm_gem_address_space *aspace[MSM_SMMU_DOMAIN_MAX];
-	struct sde_power_client *core_client;
-
 	struct sde_power_event *power_event;
 
 	/* directory entry for debugfs */
@@ -312,14 +310,10 @@ bool sde_is_custom_client(void);
  */
 static inline bool sde_kms_power_resource_is_enabled(struct drm_device *dev)
 {
-	struct msm_drm_private *priv;
-
-	if (!dev || !dev->dev_private)
+	if (!dev)
 		return false;
 
-	priv = dev->dev_private;
-
-	return sde_power_resource_is_enabled(&priv->phandle);
+	return pm_runtime_enabled(dev->dev);
 }
 
 /**

msm/sde/sde_plane.c

@@ -550,30 +550,20 @@ void sde_plane_set_revalidate(struct drm_plane *plane, bool enable)
 int sde_plane_danger_signal_ctrl(struct drm_plane *plane, bool enable)
 {
 	struct sde_plane *psde;
-	struct msm_drm_private *priv;
-	struct sde_kms *sde_kms;
 	int rc;
 
-	if (!plane || !plane->dev) {
+	if (!plane) {
 		SDE_ERROR("invalid arguments\n");
 		return -EINVAL;
 	}
 
-	priv = plane->dev->dev_private;
-	if (!priv || !priv->kms) {
-		SDE_ERROR("invalid KMS reference\n");
-		return -EINVAL;
-	}
-
-	sde_kms = to_sde_kms(priv->kms);
 	psde = to_sde_plane(plane);
 
 	if (!psde->is_rt_pipe)
 		goto end;
 
-	rc = sde_power_resource_enable(&priv->phandle, sde_kms->core_client,
-			true);
-	if (rc) {
+	rc = pm_runtime_get_sync(plane->dev->dev);
+	if (rc < 0) {
 		SDE_ERROR("failed to enable power resource %d\n", rc);
 		SDE_EVT32(rc, SDE_EVTLOG_ERROR);
 		return rc;
@@ -581,7 +571,7 @@ int sde_plane_danger_signal_ctrl(struct drm_plane *plane, bool enable)
 
 	_sde_plane_set_qos_ctrl(plane, enable, SDE_PLANE_QOS_PANIC_CTRL);
 
-	sde_power_resource_enable(&priv->phandle, sde_kms->core_client, false);
+	pm_runtime_put_sync(plane->dev->dev);
 
 end:
 	return 0;
@@ -2103,28 +2093,6 @@ static int _sde_plane_fetch_halt(struct drm_plane *plane)
 }
 
 
-static inline int _sde_plane_power_enable(struct drm_plane *plane, bool enable)
-{
-	struct msm_drm_private *priv;
-	struct sde_kms *sde_kms;
-
-	if (!plane->dev || !plane->dev->dev_private) {
-		SDE_ERROR("invalid drm device\n");
-		return -EINVAL;
-	}
-
-	priv = plane->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);
-}
-
 static void sde_plane_cleanup_fb(struct drm_plane *plane,
 		struct drm_plane_state *old_state)
 {
@@ -2149,10 +2117,10 @@ static void sde_plane_cleanup_fb(struct drm_plane *plane,
 			       psde->pipe - SSPP_VIG0);
 
 		/* halt this plane now */
-		ret = _sde_plane_power_enable(plane, true);
-		if (ret) {
+		ret = pm_runtime_get_sync(plane->dev->dev);
+		if (ret < 0) {
 			SDE_ERROR("power resource enable failed with %d", ret);
-			SDE_EVT32(ret);
+			SDE_EVT32(ret, SDE_EVTLOG_ERROR);
 			return;
 		}
 
@@ -2164,7 +2132,7 @@ static void sde_plane_cleanup_fb(struct drm_plane *plane,
 			SDE_EVT32(DRMID(plane), psde->pipe - SSPP_VIG0,
 				       ret, SDE_EVTLOG_ERROR);
 		}
-		_sde_plane_power_enable(plane, false);
+		pm_runtime_put_sync(plane->dev->dev);
 	}
 
 	msm_framebuffer_cleanup(old_state->fb, old_pstate->aspace);

msm/sde/sde_trace.h

@@ -86,23 +86,20 @@ TRACE_EVENT(sde_perf_set_ot,
 )
 
 TRACE_EVENT(sde_perf_update_bus,
-	TP_PROTO(int client, u32 bus_id, unsigned long long ab_quota,
+	TP_PROTO(u32 bus_id, unsigned long long ab_quota,
 	unsigned long long ib_quota),
-	TP_ARGS(client, bus_id, ab_quota, ib_quota),
+	TP_ARGS(bus_id, ab_quota, ib_quota),
 	TP_STRUCT__entry(
-			__field(int, client)
 			__field(u32, bus_id);
 			__field(u64, ab_quota)
 			__field(u64, ib_quota)
 	),
 	TP_fast_assign(
-			__entry->client = client;
 			__entry->bus_id = bus_id;
 			__entry->ab_quota = ab_quota;
 			__entry->ib_quota = ib_quota;
 	),
-	TP_printk("Request client:%d bus_id:%d ab=%llu ib=%llu",
-			__entry->client,
+	TP_printk("Request bus_id:%d ab=%llu ib=%llu",
 			__entry->bus_id,
 			__entry->ab_quota,
 			__entry->ib_quota)

msm/sde_dbg.c

@@ -13,6 +13,8 @@
 #include <linux/dma-buf.h>
 #include <linux/slab.h>
 #include <linux/list_sort.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
 
 #include "sde_dbg.h"
 #include "sde/sde_hw_catalog.h"
@@ -196,7 +198,6 @@ struct sde_dbg_regbuf {
  * @reg_base_list: list of register dumping regions
  * @dev: device pointer
  * @mutex: mutex to serialize access to serialze dumps, debugfs access
- * @power_ctrl: callback structure for enabling power for reading hw registers
  * @req_dump_blks: list of blocks requested for dumping
  * @panic_on_err: whether to kernel panic after triggering dump via debugfs
  * @dump_work: work struct for deferring register dump work to separate thread
@@ -216,7 +217,6 @@ static struct sde_dbg_base {
 	struct list_head reg_base_list;
 	struct device *dev;
 	struct mutex mutex;
-	struct sde_dbg_power_ctrl power_ctrl;
 
 	struct sde_dbg_reg_base *req_dump_blks[SDE_DBG_BASE_MAX];
 
@@ -2825,21 +2825,6 @@ static struct vbif_debug_bus_entry vbif_dbg_bus_msm8998[] = {
 	{0x21c, 0x214, 0, 14, 0, 0xc}, /* xin blocks - clock side */
 };
 
-/**
- * _sde_dbg_enable_power - use callback to turn power on for hw register access
- * @enable: whether to turn power on or off
- * Return: zero if success; error code otherwise
- */
-static inline int _sde_dbg_enable_power(int enable)
-{
-	if (!sde_dbg_base.power_ctrl.enable_fn)
-		return -EINVAL;
-	return sde_dbg_base.power_ctrl.enable_fn(
-			sde_dbg_base.power_ctrl.handle,
-			sde_dbg_base.power_ctrl.client,
-			enable);
-}
-
 /**
  * _sde_dump_reg - helper function for dumping rotator register set content
  * @dump_name: register set name
@@ -2901,8 +2886,8 @@ static void _sde_dump_reg(const char *dump_name, u32 reg_dump_flag,
 	}
 
 	if (!from_isr) {
-		rc = _sde_dbg_enable_power(true);
-		if (rc) {
+		rc = pm_runtime_get_sync(sde_dbg_base.dev);
+		if (rc < 0) {
 			pr_err("failed to enable power %d\n", rc);
 			return;
 		}
@@ -2933,7 +2918,7 @@ static void _sde_dump_reg(const char *dump_name, u32 reg_dump_flag,
 	}
 
 	if (!from_isr)
-		_sde_dbg_enable_power(false);
+		pm_runtime_put_sync(sde_dbg_base.dev);
 }
 
 /**
@@ -3138,8 +3123,8 @@ static void _sde_dbg_dump_sde_dbg_bus(struct sde_dbg_sde_debug_bus *bus)
 		}
 	}
 
-	rc = _sde_dbg_enable_power(true);
-	if (rc) {
+	rc = pm_runtime_get_sync(sde_dbg_base.dev);
+	if (rc < 0) {
 		pr_err("failed to enable power %d\n", rc);
 		return;
 	}
@@ -3183,7 +3168,7 @@ static void _sde_dbg_dump_sde_dbg_bus(struct sde_dbg_sde_debug_bus *bus)
 						head->wr_addr != DBGBUS_DSPP)
 			writel_relaxed(0x0, mem_base + DBGBUS_DSPP);
 	}
-	_sde_dbg_enable_power(false);
+	pm_runtime_put_sync(sde_dbg_base.dev);
 
 	dev_info(sde_dbg_base.dev, "======== end %s dump =========\n",
 			bus->cmn.name);
@@ -3295,8 +3280,8 @@ static void _sde_dbg_dump_vbif_dbg_bus(struct sde_dbg_vbif_debug_bus *bus)
 		}
 	}
 
-	rc = _sde_dbg_enable_power(true);
-	if (rc) {
+	rc = pm_runtime_get_sync(sde_dbg_base.dev);
+	if (rc < 0) {
 		pr_err("failed to enable power %d\n", rc);
 		return;
 	}
@@ -3350,7 +3335,7 @@ static void _sde_dbg_dump_vbif_dbg_bus(struct sde_dbg_vbif_debug_bus *bus)
 			dump_addr += (head->block_cnt * head->test_pnt_cnt * 4);
 	}
 
-	_sde_dbg_enable_power(false);
+	pm_runtime_put_sync(sde_dbg_base.dev);
 
 	dev_info(sde_dbg_base.dev, "======== end %s dump =========\n",
 			bus->cmn.name);
@@ -4234,8 +4219,8 @@ static ssize_t sde_dbg_reg_base_reg_write(struct file *file,
 		return -EFAULT;
 	}
 
-	rc = _sde_dbg_enable_power(true);
-	if (rc) {
+	rc = pm_runtime_get_sync(sde_dbg_base.dev);
+	if (rc < 0) {
 		mutex_unlock(&sde_dbg_base.mutex);
 		pr_err("failed to enable power %d\n", rc);
 		return rc;
@@ -4243,7 +4228,7 @@ static ssize_t sde_dbg_reg_base_reg_write(struct file *file,
 
 	writel_relaxed(data, dbg->base + off);
 
-	_sde_dbg_enable_power(false);
+	pm_runtime_put_sync(sde_dbg_base.dev);
 
 	mutex_unlock(&sde_dbg_base.mutex);
 
@@ -4301,8 +4286,8 @@ static ssize_t sde_dbg_reg_base_reg_read(struct file *file,
 		ptr = dbg->base + dbg->off;
 		tot = 0;
 
-		rc = _sde_dbg_enable_power(true);
-		if (rc) {
+		rc = pm_runtime_get_sync(sde_dbg_base.dev);
+		if (rc < 0) {
 			mutex_unlock(&sde_dbg_base.mutex);
 			pr_err("failed to enable power %d\n", rc);
 			return rc;
@@ -4324,7 +4309,7 @@ static ssize_t sde_dbg_reg_base_reg_read(struct file *file,
 				break;
 		}
 
-		_sde_dbg_enable_power(false);
+		pm_runtime_put_sync(sde_dbg_base.dev);
 
 		dbg->buf_len = tot;
 	}
@@ -4457,9 +4442,9 @@ void sde_dbg_init_dbg_buses(u32 hwversion)
 	}
 }
 
-int sde_dbg_init(struct device *dev, struct sde_dbg_power_ctrl *power_ctrl)
+int sde_dbg_init(struct device *dev)
 {
-	if (!dev || !power_ctrl) {
+	if (!dev) {
 		pr_err("invalid params\n");
 		return -EINVAL;
 	}
@@ -4467,7 +4452,6 @@ int sde_dbg_init(struct device *dev, struct sde_dbg_power_ctrl *power_ctrl)
 	mutex_init(&sde_dbg_base.mutex);
 	INIT_LIST_HEAD(&sde_dbg_base.reg_base_list);
 	sde_dbg_base.dev = dev;
-	sde_dbg_base.power_ctrl = *power_ctrl;
 
 	sde_dbg_base.evtlog = sde_evtlog_init();
 	if (IS_ERR_OR_NULL(sde_dbg_base.evtlog))

msm/sde_dbg.h

@@ -213,11 +213,9 @@ void sde_dbg_init_dbg_buses(u32 hwversion);
 /**
  * sde_dbg_init - initialize global sde debug facilities: evtlog, regdump
  * @dev:		device handle
- * @power_ctrl:		power control callback structure for enabling clocks
- *			during register dumping
  * Returns:		0 or -ERROR
  */
-int sde_dbg_init(struct device *dev, struct sde_dbg_power_ctrl *power_ctrl);
+int sde_dbg_init(struct device *dev);
 
 /**
  * sde_dbg_debugfs_register - register entries at the given debugfs dir

msm/sde_power_handle.c

@@ -77,53 +77,6 @@ static int sde_power_rsc_update(struct sde_power_handle *phandle, bool enable)
 	return ret;
 }
 
-struct sde_power_client *sde_power_client_create(
-	struct sde_power_handle *phandle, char *client_name)
-{
-	struct sde_power_client *client;
-	static u32 id;
-
-	if (!client_name || !phandle) {
-		pr_err("client name is null or invalid power data\n");
-		return ERR_PTR(-EINVAL);
-	}
-
-	client = kzalloc(sizeof(struct sde_power_client), GFP_KERNEL);
-	if (!client)
-		return ERR_PTR(-ENOMEM);
-
-	mutex_lock(&phandle->phandle_lock);
-	strlcpy(client->name, client_name, MAX_CLIENT_NAME_LEN);
-	client->usecase_ndx = VOTE_INDEX_DISABLE;
-	client->id = id;
-	client->active = true;
-	pr_debug("client %s created:%pK id :%d\n", client_name,
-		client, id);
-	id++;
-	list_add(&client->list, &phandle->power_client_clist);
-	mutex_unlock(&phandle->phandle_lock);
-
-	return client;
-}
-
-void sde_power_client_destroy(struct sde_power_handle *phandle,
-	struct sde_power_client *client)
-{
-	if (!client  || !phandle) {
-		pr_err("reg bus vote: invalid client handle\n");
-	} else if (!client->active) {
-		pr_err("sde power deinit already done\n");
-		kfree(client);
-	} else {
-		pr_debug("bus vote client %s destroyed:%pK id:%u\n",
-			client->name, client, client->id);
-		mutex_lock(&phandle->phandle_lock);
-		list_del_init(&client->list);
-		mutex_unlock(&phandle->phandle_lock);
-		kfree(client);
-	}
-}
-
 static int sde_power_parse_dt_supply(struct platform_device *pdev,
 				struct dss_module_power *mp)
 {
@@ -329,9 +282,8 @@ clk_err:
 #define MAX_AXI_PORT_COUNT 3
 
 static int _sde_power_data_bus_set_quota(
-		struct sde_power_data_bus_handle *pdbus,
-		u64 ab_quota_rt, u64 ab_quota_nrt,
-		u64 ib_quota_rt, u64 ib_quota_nrt)
+	struct sde_power_data_bus_handle *pdbus,
+	u64 in_ab_quota, u64 in_ib_quota)
 {
 	int new_uc_idx;
 	u64 ab_quota[MAX_AXI_PORT_COUNT] = {0, 0};
@@ -343,42 +295,14 @@ static int _sde_power_data_bus_set_quota(
 		return -EINVAL;
 	}
 
-	pdbus->ab_rt = ab_quota_rt;
-	pdbus->ib_rt = ib_quota_rt;
-	pdbus->ab_nrt = ab_quota_nrt;
-	pdbus->ib_nrt = ib_quota_nrt;
-
-	if (pdbus->enable) {
-		ab_quota_rt = max_t(u64, ab_quota_rt,
-				SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA);
-		ib_quota_rt = max_t(u64, ib_quota_rt,
-				SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
-		ab_quota_nrt = max_t(u64, ab_quota_nrt,
-				SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA);
-		ib_quota_nrt = max_t(u64, ib_quota_nrt,
-				SDE_POWER_HANDLE_ENABLE_NRT_BUS_IB_QUOTA);
-	} else {
-		ab_quota_rt = min_t(u64, ab_quota_rt,
-				SDE_POWER_HANDLE_DISABLE_BUS_AB_QUOTA);
-		ib_quota_rt = min_t(u64, ib_quota_rt,
-				SDE_POWER_HANDLE_DISABLE_BUS_IB_QUOTA);
-		ab_quota_nrt = min_t(u64, ab_quota_nrt,
-				SDE_POWER_HANDLE_DISABLE_BUS_AB_QUOTA);
-		ib_quota_nrt = min_t(u64, ib_quota_nrt,
-				SDE_POWER_HANDLE_DISABLE_BUS_IB_QUOTA);
-	}
-
-	if (!ab_quota_rt && !ab_quota_nrt && !ib_quota_rt && !ib_quota_nrt)  {
+	if (!in_ab_quota && !in_ib_quota)  {
 		new_uc_idx = 0;
 	} else {
 		int i;
 		struct msm_bus_vectors *vect = NULL;
 		struct msm_bus_scale_pdata *bw_table =
 			pdbus->data_bus_scale_table;
-		u32 nrt_data_paths_cnt = pdbus->nrt_data_paths_cnt;
 		u32 total_data_paths_cnt = pdbus->data_paths_cnt;
-		u32 rt_data_paths_cnt = total_data_paths_cnt -
-			nrt_data_paths_cnt;
 
 		if (!bw_table || !total_data_paths_cnt ||
 		    total_data_paths_cnt > MAX_AXI_PORT_COUNT) {
@@ -386,36 +310,12 @@ static int _sde_power_data_bus_set_quota(
 			return -EINVAL;
 		}
 
-		if (nrt_data_paths_cnt) {
-
-			ab_quota_rt = div_u64(ab_quota_rt, rt_data_paths_cnt);
-			ab_quota_nrt = div_u64(ab_quota_nrt,
-						nrt_data_paths_cnt);
-
-			ib_quota_rt = div_u64(ib_quota_rt,
-						rt_data_paths_cnt);
-			ib_quota_nrt = div_u64(ib_quota_nrt,
-						nrt_data_paths_cnt);
-
-			for (i = 0; i < total_data_paths_cnt; i++) {
-				if (i < rt_data_paths_cnt) {
-					ab_quota[i] = ab_quota_rt;
-					ib_quota[i] = ib_quota_rt;
-				} else {
-					ab_quota[i] = ab_quota_nrt;
-					ib_quota[i] = ib_quota_nrt;
-				}
-			}
-		} else {
-			ab_quota[0] = div_u64(ab_quota_rt + ab_quota_nrt,
-					total_data_paths_cnt);
-			ib_quota[0] = div_u64(ib_quota_rt + ib_quota_nrt,
-					total_data_paths_cnt);
-
-			for (i = 1; i < total_data_paths_cnt; i++) {
-				ab_quota[i] = ab_quota[0];
-				ib_quota[i] = ib_quota[0];
-			}
+		ab_quota[0] = div_u64(in_ab_quota, total_data_paths_cnt);
+		ib_quota[0] = div_u64(in_ib_quota, total_data_paths_cnt);
+
+		for (i = 1; i < total_data_paths_cnt; i++) {
+			ab_quota[i] = ab_quota[0];
+			ib_quota[i] = ib_quota[0];
 		}
 
 		new_uc_idx = (pdbus->curr_bw_uc_idx %
@@ -427,14 +327,12 @@ static int _sde_power_data_bus_set_quota(
 			vect->ib = ib_quota[i];
 
 			pr_debug(
-				"%s uc_idx=%d %s path idx=%d ab=%llu ib=%llu\n",
-				bw_table->name,
-				new_uc_idx, (i < rt_data_paths_cnt) ?
-				"rt" : "nrt", i, vect->ab, vect->ib);
+				"%s uc_idx=%d idx=%d ab=%llu ib=%llu\n",
+				bw_table->name, new_uc_idx, i, vect->ab,
+				vect->ib);
 		}
 	}
 	pdbus->curr_bw_uc_idx = new_uc_idx;
-	pdbus->ao_bw_uc_idx = new_uc_idx;
 
 	SDE_ATRACE_BEGIN("msm_bus_scale_req");
 	rc = msm_bus_scale_client_update_request(pdbus->data_bus_hdl,
@@ -445,46 +343,22 @@ static int _sde_power_data_bus_set_quota(
 }
 
 int sde_power_data_bus_set_quota(struct sde_power_handle *phandle,
-		struct sde_power_client *pclient,
-		int bus_client, u32 bus_id,
-		u64 ab_quota, u64 ib_quota)
+	u32 bus_id, u64 ab_quota, u64 ib_quota)
 {
 	int rc = 0;
-	int i;
-	u64 total_ab_rt = 0, total_ib_rt = 0;
-	u64 total_ab_nrt = 0, total_ib_nrt = 0;
-	struct sde_power_client *client;
 
-	if (!phandle || !pclient ||
-			bus_client >= SDE_POWER_HANDLE_DATA_BUS_CLIENT_MAX ||
-			bus_id >= SDE_POWER_HANDLE_DBUS_ID_MAX) {
+	if (!phandle || bus_id >= SDE_POWER_HANDLE_DBUS_ID_MAX) {
 		pr_err("invalid parameters\n");
 		return -EINVAL;
 	}
 
 	mutex_lock(&phandle->phandle_lock);
 
-	pclient->ab[bus_client] = ab_quota;
-	pclient->ib[bus_client] = ib_quota;
-	trace_sde_perf_update_bus(bus_client, bus_id, ab_quota, ib_quota);
-
-	list_for_each_entry(client, &phandle->power_client_clist, list) {
-		for (i = 0; i < SDE_POWER_HANDLE_DATA_BUS_CLIENT_MAX; i++) {
-			if (i == SDE_POWER_HANDLE_DATA_BUS_CLIENT_NRT) {
-				total_ab_nrt += client->ab[i];
-				total_ib_nrt += client->ib[i];
-			} else {
-				total_ab_rt += client->ab[i];
-				total_ib_rt = max(total_ib_rt, client->ib[i]);
-			}
-		}
-	}
+	trace_sde_perf_update_bus(bus_id, ab_quota, ib_quota);
 
 	if (phandle->data_bus_handle[bus_id].data_bus_hdl)
 		rc = _sde_power_data_bus_set_quota(
-			&phandle->data_bus_handle[bus_id],
-			total_ab_rt, total_ab_nrt,
-			total_ib_rt, total_ib_nrt);
+			&phandle->data_bus_handle[bus_id], ab_quota, ib_quota);
 
 	mutex_unlock(&phandle->phandle_lock);
 
@@ -507,52 +381,33 @@ static int sde_power_data_bus_parse(struct platform_device *pdev,
 	int rc = 0;
 	int paths;
 
-	pdbus->bus_channels = 1;
-	rc = of_property_read_u32(pdev->dev.of_node,
-		"qcom,sde-dram-channels", &pdbus->bus_channels);
-	if (rc) {
-		pr_debug("number of channels property not specified\n");
-		rc = 0;
-	}
+	node = of_get_child_by_name(pdev->dev.of_node, name);
+	if (!node)
+		goto end;
 
-	pdbus->nrt_data_paths_cnt = 0;
-	rc = of_property_read_u32(pdev->dev.of_node,
-			"qcom,sde-num-nrt-paths",
-			&pdbus->nrt_data_paths_cnt);
+	rc = of_property_read_u32(node, "qcom,msm-bus,num-paths", &paths);
 	if (rc) {
-		pr_debug("number of axi port property not specified\n");
-		rc = 0;
+		pr_err("Error. qcom,msm-bus,num-paths not found\n");
+		return rc;
 	}
+	pdbus->data_paths_cnt = paths;
 
-	node = of_get_child_by_name(pdev->dev.of_node, name);
-	if (node) {
-		rc = of_property_read_u32(node,
-				"qcom,msm-bus,num-paths", &paths);
-		if (rc) {
-			pr_err("Error. qcom,msm-bus,num-paths not found\n");
-			return rc;
-		}
-		pdbus->data_paths_cnt = paths;
-
-		pdbus->data_bus_scale_table =
-				msm_bus_pdata_from_node(pdev, node);
-		if (IS_ERR_OR_NULL(pdbus->data_bus_scale_table)) {
-			pr_err("reg bus handle parsing failed\n");
-			rc = PTR_ERR(pdbus->data_bus_scale_table);
-			if (!pdbus->data_bus_scale_table)
-				rc = -EINVAL;
-			goto end;
-		}
-		pdbus->data_bus_hdl = msm_bus_scale_register_client(
-				pdbus->data_bus_scale_table);
-		if (!pdbus->data_bus_hdl) {
-			pr_err("data_bus_client register failed\n");
+	pdbus->data_bus_scale_table = msm_bus_pdata_from_node(pdev, node);
+	if (IS_ERR_OR_NULL(pdbus->data_bus_scale_table)) {
+		pr_err("reg bus handle parsing failed\n");
+		rc = PTR_ERR(pdbus->data_bus_scale_table);
+		if (!pdbus->data_bus_scale_table)
 			rc = -EINVAL;
-			goto end;
-		}
-		pr_debug("register %s data_bus_hdl=%x\n", name,
-				pdbus->data_bus_hdl);
+		goto end;
+	}
+	pdbus->data_bus_hdl = msm_bus_scale_register_client(
+			pdbus->data_bus_scale_table);
+	if (!pdbus->data_bus_hdl) {
+		pr_err("data_bus_client register failed\n");
+		rc = -EINVAL;
+		goto end;
 	}
+	pr_debug("register %s data_bus_hdl=%x\n", name, pdbus->data_bus_hdl);
 
 end:
 	return rc;
@@ -595,41 +450,6 @@ static void sde_power_reg_bus_unregister(u32 reg_bus_hdl)
 		msm_bus_scale_unregister_client(reg_bus_hdl);
 }
 
-int sde_power_data_bus_state_update(struct sde_power_handle *phandle,
-							bool enable)
-{
-	int i;
-
-	if (!phandle) {
-		pr_err("invalid param\n");
-		return -EINVAL;
-	}
-
-	for (i = SDE_POWER_HANDLE_DBUS_ID_MNOC;
-			i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++)
-		phandle->data_bus_handle[i].enable = enable;
-
-	return 0;
-}
-
-static int sde_power_data_bus_update(struct sde_power_data_bus_handle *pdbus,
-							bool enable)
-{
-	int rc = 0;
-
-	pdbus->enable = enable;
-
-	if (pdbus->data_bus_hdl)
-		rc = _sde_power_data_bus_set_quota(pdbus, pdbus->ab_rt,
-				pdbus->ab_nrt, pdbus->ib_rt, pdbus->ib_nrt);
-
-	if (rc)
-		pr_err("failed to set data bus vote rc=%d enable:%d\n",
-							rc, enable);
-
-	return rc;
-}
-
 static int sde_power_reg_bus_update(u32 reg_bus_hdl, u32 usecase_ndx)
 {
 	int rc = 0;
@@ -647,6 +467,13 @@ static int sde_power_reg_bus_update(u32 reg_bus_hdl, u32 usecase_ndx)
 	return rc;
 }
 #else
+static int _sde_power_data_bus_set_quota(
+	struct sde_power_data_bus_handle *pdbus,
+	u64 in_ab_quota, u64 in_ib_quota)
+{
+	return 0;
+}
+
 static int sde_power_data_bus_parse(struct platform_device *pdev,
 		struct sde_power_data_bus_handle *pdbus, const char *name)
 {
@@ -659,9 +486,7 @@ static void sde_power_data_bus_unregister(
 }
 
 int sde_power_data_bus_set_quota(struct sde_power_handle *phandle,
-		struct sde_power_client *pclient,
-		int bus_client, u32 bus_id,
-		u64 ab_quota, u64 ib_quota)
+	u32 bus_id, u64 ab_quota, u64 ib_quota)
 {
 	return 0;
 }
@@ -681,12 +506,6 @@ static int sde_power_reg_bus_update(u32 reg_bus_hdl, u32 usecase_ndx)
 	return 0;
 }
 
-static int sde_power_data_bus_update(struct sde_power_data_bus_handle *pdbus,
-							bool enable)
-{
-	return 0;
-}
-
 int sde_power_data_bus_state_update(struct sde_power_handle *phandle,
 							bool enable)
 {
@@ -763,7 +582,6 @@ int sde_power_resource_init(struct platform_device *pdev,
 	else
 		pr_debug("cx ipeak client parse failed\n");
 
-	INIT_LIST_HEAD(&phandle->power_client_clist);
 	INIT_LIST_HEAD(&phandle->event_list);
 
 	phandle->rsc_client = NULL;
@@ -797,7 +615,6 @@ void sde_power_resource_deinit(struct platform_device *pdev,
 	struct sde_power_handle *phandle)
 {
 	struct dss_module_power *mp;
-	struct sde_power_client *curr_client, *next_client;
 	struct sde_power_event *curr_event, *next_event;
 	int i;
 
@@ -808,15 +625,6 @@ void sde_power_resource_deinit(struct platform_device *pdev,
 	mp = &phandle->mp;
 
 	mutex_lock(&phandle->phandle_lock);
-	list_for_each_entry_safe(curr_client, next_client,
-			&phandle->power_client_clist, list) {
-		pr_err("cliend:%s-%d still registered with refcount:%d\n",
-				curr_client->name, curr_client->id,
-				curr_client->refcount);
-		curr_client->active = false;
-		list_del(&curr_client->list);
-	}
-
 	list_for_each_entry_safe(curr_event, next_event,
 			&phandle->event_list, list) {
 		pr_err("event:%d, client:%s still registered\n",
@@ -852,47 +660,22 @@ void sde_power_resource_deinit(struct platform_device *pdev,
 		sde_rsc_client_destroy(phandle->rsc_client);
 }
 
-
 int sde_power_scale_reg_bus(struct sde_power_handle *phandle,
-	struct sde_power_client *pclient, u32 usecase_ndx, bool skip_lock)
+	u32 usecase_ndx, bool skip_lock)
 {
-	struct sde_power_client *client;
 	int rc = 0;
-	u32 max_usecase_ndx = VOTE_INDEX_DISABLE;
 
-	if (!skip_lock) {
+	if (!skip_lock)
 		mutex_lock(&phandle->phandle_lock);
 
-		if (WARN_ON(pclient->refcount == 0)) {
-			/*
-			 * This is not expected, clients calling without skip
-			 * lock are outside the power resource enable, which
-			 * means that they should have enabled the power
-			 * resource before trying to scale.
-			 */
-			rc = -EINVAL;
-			goto exit;
-		}
-	}
-
-	pr_debug("%pS: current idx:%d requested:%d client:%d\n",
-		__builtin_return_address(0), pclient->usecase_ndx,
-		usecase_ndx, pclient->id);
-
-	pclient->usecase_ndx = usecase_ndx;
-
-	list_for_each_entry(client, &phandle->power_client_clist, list) {
-		if (client->usecase_ndx < VOTE_INDEX_MAX &&
-		    client->usecase_ndx > max_usecase_ndx)
-			max_usecase_ndx = client->usecase_ndx;
-	}
+	pr_debug("%pS: requested:%d\n",
+		__builtin_return_address(0), usecase_ndx);
 
 	rc = sde_power_reg_bus_update(phandle->reg_bus_hdl,
-						max_usecase_ndx);
+						usecase_ndx);
 	if (rc)
 		pr_err("failed to set reg bus vote rc=%d\n", rc);
 
-exit:
 	if (!skip_lock)
 		mutex_unlock(&phandle->phandle_lock);
 
@@ -914,16 +697,12 @@ static inline bool _resource_changed(u32 current_usecase_ndx,
 	return false;
 }
 
-int sde_power_resource_enable(struct sde_power_handle *phandle,
-	struct sde_power_client *pclient, bool enable)
+int sde_power_resource_enable(struct sde_power_handle *phandle, bool enable)
 {
-	int rc = 0, i;
-	bool changed = false;
-	u32 max_usecase_ndx = VOTE_INDEX_DISABLE, prev_usecase_ndx;
-	struct sde_power_client *client;
+	int rc = 0, i = 0;
 	struct dss_module_power *mp;
 
-	if (!phandle || !pclient) {
+	if (!phandle) {
 		pr_err("invalid input argument\n");
 		return -EINVAL;
 	}
@@ -931,42 +710,8 @@ int sde_power_resource_enable(struct sde_power_handle *phandle,
 	mp = &phandle->mp;
 
 	mutex_lock(&phandle->phandle_lock);
-	if (enable)
-		pclient->refcount++;
-	else if (pclient->refcount)
-		pclient->refcount--;
 
-	if (pclient->refcount)
-		pclient->usecase_ndx = VOTE_INDEX_LOW;
-	else
-		pclient->usecase_ndx = VOTE_INDEX_DISABLE;
-
-	list_for_each_entry(client, &phandle->power_client_clist, list) {
-		if (client->usecase_ndx < VOTE_INDEX_MAX &&
-		    client->usecase_ndx > max_usecase_ndx)
-			max_usecase_ndx = client->usecase_ndx;
-	}
-
-	/*
-	 * Check if we need to enable/disable the power resource, we won't
-	 * only-scale up/down the AHB vote in this API; if a client wants to
-	 * bump up the AHB clock above the LOW (default) level, it needs to
-	 * call 'sde_power_scale_reg_bus' with the desired vote after the power
-	 * resource was enabled.
-	 */
-	if (_resource_changed(phandle->current_usecase_ndx,
-			max_usecase_ndx)) {
-		changed = true;
-		prev_usecase_ndx = phandle->current_usecase_ndx;
-		phandle->current_usecase_ndx = max_usecase_ndx;
-	}
-
-	pr_debug("%pS: changed=%d current idx=%d request client %s id:%u enable:%d refcount:%d\n",
-		__builtin_return_address(0), changed, max_usecase_ndx,
-		pclient->name, pclient->id, enable, pclient->refcount);
-
-	if (!changed)
-		goto end;
+	pr_debug("enable:%d\n", enable);
 
 	SDE_ATRACE_BEGIN("sde_power_resource_enable");
 
@@ -977,13 +722,16 @@ int sde_power_resource_enable(struct sde_power_handle *phandle,
 		sde_power_event_trigger_locked(phandle,
 				SDE_POWER_EVENT_PRE_ENABLE);
 
-		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++) {
-			rc = sde_power_data_bus_update(
-					&phandle->data_bus_handle[i], enable);
+		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX &&
+		     phandle->data_bus_handle[i].data_bus_hdl; i++) {
+			rc = _sde_power_data_bus_set_quota(
+				&phandle->data_bus_handle[i],
+				SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA,
+				SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
 			if (rc) {
 				pr_err("failed to set data bus vote id=%d rc=%d\n",
 						i, rc);
-				goto data_bus_hdl_err;
+				goto vreg_err;
 			}
 		}
 		rc = msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg,
@@ -993,8 +741,7 @@ int sde_power_resource_enable(struct sde_power_handle *phandle,
 			goto vreg_err;
 		}
 
-		rc = sde_power_scale_reg_bus(phandle, pclient,
-				max_usecase_ndx, true);
+		rc = sde_power_scale_reg_bus(phandle, VOTE_INDEX_LOW, true);
 		if (rc) {
 			pr_err("failed to set reg bus vote rc=%d\n", rc);
 			goto reg_bus_hdl_err;
@@ -1025,20 +772,21 @@ int sde_power_resource_enable(struct sde_power_handle *phandle,
 
 		msm_dss_enable_clk(mp->clk_config, mp->num_clk, enable);
 
-		sde_power_scale_reg_bus(phandle, pclient,
-				max_usecase_ndx, true);
+		sde_power_scale_reg_bus(phandle, VOTE_INDEX_DISABLE, true);
 
 		msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg, enable);
 
-		for (i = 0 ; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++)
-			sde_power_data_bus_update(&phandle->data_bus_handle[i],
-					enable);
+		for (i = SDE_POWER_HANDLE_DBUS_ID_MAX - 1; i >= 0; i--)
+			if (phandle->data_bus_handle[i].data_bus_hdl)
+				_sde_power_data_bus_set_quota(
+					&phandle->data_bus_handle[i],
+					SDE_POWER_HANDLE_DISABLE_BUS_AB_QUOTA,
+					SDE_POWER_HANDLE_DISABLE_BUS_IB_QUOTA);
 
 		sde_power_event_trigger_locked(phandle,
 				SDE_POWER_EVENT_POST_DISABLE);
 	}
 
-end:
 	SDE_EVT32_VERBOSE(enable, SDE_EVTLOG_FUNC_EXIT);
 	mutex_unlock(&phandle->phandle_lock);
 	SDE_ATRACE_END("sde_power_resource_enable");
@@ -1047,29 +795,20 @@ end:
 clk_err:
 	sde_power_rsc_update(phandle, false);
 rsc_err:
-	sde_power_scale_reg_bus(phandle, pclient, max_usecase_ndx, true);
+	sde_power_scale_reg_bus(phandle, VOTE_INDEX_DISABLE, true);
 reg_bus_hdl_err:
 	msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg, 0);
 vreg_err:
-	for (i = 0 ; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++)
-		sde_power_data_bus_update(&phandle->data_bus_handle[i], 0);
-data_bus_hdl_err:
-	phandle->current_usecase_ndx = prev_usecase_ndx;
+	for (i-- ; i >= 0 && phandle->data_bus_handle[i].data_bus_hdl; i--)
+		_sde_power_data_bus_set_quota(
+			&phandle->data_bus_handle[i],
+			SDE_POWER_HANDLE_DISABLE_BUS_AB_QUOTA,
+			SDE_POWER_HANDLE_DISABLE_BUS_IB_QUOTA);
 	mutex_unlock(&phandle->phandle_lock);
 	SDE_ATRACE_END("sde_power_resource_enable");
 	return rc;
 }
 
-int sde_power_resource_is_enabled(struct sde_power_handle *phandle)
-{
-	if (!phandle) {
-		pr_err("invalid input argument\n");
-		return false;
-	}
-
-	return phandle->current_usecase_ndx != VOTE_INDEX_DISABLE;
-}
-
 int sde_cx_ipeak_vote(struct sde_power_handle *phandle, struct dss_clk *clock,
 		u64 requested_clk_rate, u64 prev_clk_rate, bool enable_vote)
 {

msm/sde_power_handle.h

@@ -73,38 +73,11 @@ enum SDE_POWER_HANDLE_DBUS_ID {
 	SDE_POWER_HANDLE_DBUS_ID_MAX,
 };
 
-/**
- * struct sde_power_client: stores the power client for sde driver
- * @name:	name of the client
- * @usecase_ndx: current regs bus vote type
- * @refcount:	current refcount if multiple modules are using same
- *              same client for enable/disable. Power module will
- *              aggregate the refcount and vote accordingly for this
- *              client.
- * @id:		assigned during create. helps for debugging.
- * @list:	list to attach power handle master list
- * @ab:         arbitrated bandwidth for each bus client
- * @ib:         instantaneous bandwidth for each bus client
- * @active:	inidcates the state of sde power handle
- */
-struct sde_power_client {
-	char name[MAX_CLIENT_NAME_LEN];
-	short usecase_ndx;
-	short refcount;
-	u32 id;
-	struct list_head list;
-	u64 ab[SDE_POWER_HANDLE_DATA_BUS_CLIENT_MAX];
-	u64 ib[SDE_POWER_HANDLE_DATA_BUS_CLIENT_MAX];
-	bool active;
-};
-
 /**
  * struct sde_power_data_handle: power handle struct for data bus
  * @data_bus_scale_table: pointer to bus scaling table
  * @data_bus_hdl: current data bus handle
  * @data_paths_cnt: number of rt data path ports
- * @nrt_data_paths_cnt: number of nrt data path ports
- * @bus_channels: number of memory bus channels
  * @curr_bw_uc_idx: current use case index of data bus
  * @ao_bw_uc_idx: active only use case index of data bus
  * @ab_rt: realtime ab quota
@@ -117,8 +90,6 @@ struct sde_power_data_bus_handle {
 	struct msm_bus_scale_pdata *data_bus_scale_table;
 	u32 data_bus_hdl;
 	u32 data_paths_cnt;
-	u32 nrt_data_paths_cnt;
-	u32 bus_channels;
 	u32 curr_bw_uc_idx;
 	u32 ao_bw_uc_idx;
 	u64 ab_rt;
@@ -149,7 +120,6 @@ struct sde_power_event {
 /**
  * struct sde_power_handle: power handle main struct
  * @mp:		module power for clock and regulator
- * @client_clist: master list to store all clients
  * @phandle_lock: lock to synchronize the enable/disable
  * @dev: pointer to device structure
  * @usecase_ndx: current usecase index
@@ -162,7 +132,6 @@ struct sde_power_event {
  */
 struct sde_power_handle {
 	struct dss_module_power mp;
-	struct list_head power_client_clist;
 	struct mutex phandle_lock;
 	struct device *dev;
 	u32 current_usecase_ndx;
@@ -195,41 +164,18 @@ int sde_power_resource_init(struct platform_device *pdev,
 void sde_power_resource_deinit(struct platform_device *pdev,
 	struct sde_power_handle *pdata);
 
-/**
- * sde_power_client_create() - create the client on power handle
- * @pdata:  power handle containing the resources
- * @client_name: new client name for registration
- *
- * Return: error code.
- */
-struct sde_power_client *sde_power_client_create(struct sde_power_handle *pdata,
-	char *client_name);
-
-/**
- * sde_power_client_destroy() - destroy the client on power handle
- * @pdata:  power handle containing the resources
- * @client_name: new client name for registration
- *
- * Return: none
- */
-void sde_power_client_destroy(struct sde_power_handle *phandle,
-	struct sde_power_client *client);
-
 /**
  * sde_power_resource_enable() - enable/disable the power resources
  * @pdata:  power handle containing the resources
- * @client: client information to enable/disable its vote
  * @enable: boolean request for enable/disable
  *
  * Return: error code.
  */
-int sde_power_resource_enable(struct sde_power_handle *pdata,
-	struct sde_power_client *pclient, bool enable);
+int sde_power_resource_enable(struct sde_power_handle *pdata, bool enable);
 
 /**
  * sde_power_scale_reg_bus() - Scale the registers bus for the specified client
  * @phandle:  power handle containing the resources
- * @pclient: client information to scale its vote
  * @usecase_ndx: new use case to scale the reg bus
  * @skip_lock: will skip holding the power rsrc mutex during the call, this is
  *		for internal callers that already hold this required lock.
@@ -237,15 +183,7 @@ int sde_power_resource_enable(struct sde_power_handle *pdata,
  * Return: error code.
  */
 int sde_power_scale_reg_bus(struct sde_power_handle *phandle,
-	struct sde_power_client *pclient, u32 usecase_ndx, bool skip_lock);
-
-/**
- * sde_power_resource_is_enabled() - return true if power resource is enabled
- * @pdata:  power handle containing the resources
- *
- * Return: true if enabled; false otherwise
- */
-int sde_power_resource_is_enabled(struct sde_power_handle *pdata);
+	u32 usecase_ndx, bool skip_lock);
 
 /**
  * sde_power_data_bus_state_update() - update data bus state
@@ -311,8 +249,6 @@ int sde_power_clk_set_flags(struct sde_power_handle *pdata,
 /**
  * sde_power_data_bus_set_quota() - set data bus quota for power client
  * @phandle:  power handle containing the resources
- * @client: client information to set quota
- * @bus_client: real-time or non-real-time bus client
  * @bus_id: identifier of data bus, see SDE_POWER_HANDLE_DBUS_ID
  * @ab_quota: arbitrated bus bandwidth
  * @ib_quota: instantaneous bus bandwidth
@@ -320,20 +256,17 @@ int sde_power_clk_set_flags(struct sde_power_handle *pdata,
  * Return: zero if success, or error code otherwise
  */
 int sde_power_data_bus_set_quota(struct sde_power_handle *phandle,
-		struct sde_power_client *pclient,
-		int bus_client, u32 bus_id,
-		u64 ab_quota, u64 ib_quota);
+	u32 bus_id, u64 ab_quota, u64 ib_quota);
 
 /**
  * sde_power_data_bus_bandwidth_ctrl() - control data bus bandwidth enable
  * @phandle:  power handle containing the resources
- * @client: client information to bandwidth control
  * @enable: true to enable bandwidth for data base
  *
  * Return: none
  */
 void sde_power_data_bus_bandwidth_ctrl(struct sde_power_handle *phandle,
-		struct sde_power_client *pclient, int enable);
+		int enable);
 
 /**
  * sde_power_handle_register_event - register a callback function for an event.

msm/sde_rsc.c

@@ -15,6 +15,7 @@
 #include <linux/mutex.h>
 #include <linux/of_platform.h>
 #include <linux/module.h>
+#include <linux/pm_runtime.h>
 
 #include <soc/qcom/rpmh.h>
 #include <drm/drmP.h>
@@ -277,64 +278,6 @@ enum sde_rsc_state get_sde_rsc_current_state(int rsc_index)
 }
 EXPORT_SYMBOL(get_sde_rsc_current_state);
 
-static int sde_rsc_clk_enable(struct sde_power_handle *phandle,
-	struct sde_power_client *pclient, bool enable)
-{
-	int rc = 0;
-	struct dss_module_power *mp;
-
-	if (!phandle || !pclient) {
-		pr_err("invalid input argument\n");
-		return -EINVAL;
-	}
-
-	mp = &phandle->mp;
-
-	if (enable)
-		pclient->refcount++;
-	else if (pclient->refcount)
-		pclient->refcount--;
-
-	if (pclient->refcount)
-		pclient->usecase_ndx = VOTE_INDEX_LOW;
-	else
-		pclient->usecase_ndx = VOTE_INDEX_DISABLE;
-
-	if (phandle->current_usecase_ndx == pclient->usecase_ndx)
-		goto end;
-
-	if (enable) {
-		rc = msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg,
-				enable);
-		if (rc) {
-			pr_err("failed to enable vregs rc=%d\n", rc);
-			goto end;
-		}
-
-		rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, enable);
-		if (rc) {
-			pr_err("clock enable failed rc:%d\n", rc);
-			msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg,
-					!enable);
-			goto end;
-		}
-	} else {
-		msm_dss_enable_clk(mp->clk_config, mp->num_clk, enable);
-
-		rc = msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg,
-				enable);
-		if (rc) {
-			pr_err("failed to disable vregs rc=%d\n", rc);
-			goto end;
-		}
-	}
-
-	phandle->current_usecase_ndx = pclient->usecase_ndx;
-
-end:
-	return rc;
-}
-
 static u32 sde_rsc_timer_calculate(struct sde_rsc_priv *rsc,
 	struct sde_rsc_cmd_config *cmd_config, enum sde_rsc_state state)
 {
@@ -484,7 +427,7 @@ static int sde_rsc_switch_to_cmd(struct sde_rsc_priv *rsc,
 	 */
 	if (rsc->current_state == SDE_RSC_CMD_STATE) {
 		rc = 0;
-		if (config && rsc->version < SDE_RSC_REV_3)
+		if (config)
 			goto vsync_wait;
 		else
 			goto end;
@@ -504,8 +447,7 @@ static int sde_rsc_switch_to_cmd(struct sde_rsc_priv *rsc,
 
 vsync_wait:
 	/* indicate wait for vsync for vid to cmd state switch & cfg update */
-	if (!rc && (rsc->version < SDE_RSC_REV_3) &&
-		 (rsc->current_state == SDE_RSC_VID_STATE ||
+	if (!rc && (rsc->current_state == SDE_RSC_VID_STATE ||
 			rsc->current_state == SDE_RSC_CMD_STATE)) {
 		/* clear VSYNC timestamp for indication when update completes */
 		if (rsc->hw_ops.hw_vsync)
@@ -623,7 +565,7 @@ static int sde_rsc_switch_to_vid(struct sde_rsc_priv *rsc,
 	 */
 	if (rsc->current_state == SDE_RSC_VID_STATE) {
 		rc = 0;
-		if (config && rsc->version < SDE_RSC_REV_3)
+		if (config)
 			goto vsync_wait;
 		else
 			goto end;
@@ -644,8 +586,7 @@ static int sde_rsc_switch_to_vid(struct sde_rsc_priv *rsc,
 
 vsync_wait:
 	/* indicate wait for vsync for vid to cmd state switch & cfg update */
-	if (!rc && (rsc->version < SDE_RSC_REV_3) &&
-		 (rsc->current_state == SDE_RSC_VID_STATE ||
+	if (!rc && (rsc->current_state == SDE_RSC_VID_STATE ||
 			rsc->current_state == SDE_RSC_CMD_STATE)) {
 		/* clear VSYNC timestamp for indication when update completes */
 		if (rsc->hw_ops.hw_vsync)
@@ -879,7 +820,7 @@ int sde_rsc_client_state_update(struct sde_rsc_client *caller_client,
 		caller_client->name, state);
 
 	if (rsc->current_state == SDE_RSC_IDLE_STATE)
-		sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true);
+		pm_runtime_get_sync(rsc->dev);
 
 	switch (state) {
 	case SDE_RSC_IDLE_STATE:
@@ -936,7 +877,7 @@ int sde_rsc_client_state_update(struct sde_rsc_client *caller_client,
 
 clk_disable:
 	if (rsc->current_state == SDE_RSC_IDLE_STATE)
-		sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false);
+		pm_runtime_put_sync(rsc->dev);
 end:
 	mutex_unlock(&rsc->client_lock);
 	return rc;
@@ -1013,8 +954,8 @@ int sde_rsc_client_trigger_vote(struct sde_rsc_client *caller_client,
 		rsc->bw_config.ib_vote[i] = rsc->bw_config.new_ib_vote[i];
 	}
 
-	rc = sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true);
-	if (rc)
+	rc = pm_runtime_get_sync(rsc->dev);
+	if (rc < 0)
 		goto clk_enable_fail;
 
 	if (delta_vote) {
@@ -1031,8 +972,6 @@ int sde_rsc_client_trigger_vote(struct sde_rsc_client *caller_client,
 		rpmh_invalidate(rsc->rpmh_dev);
 		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++)
 			sde_power_data_bus_set_quota(&rsc->phandle,
-				rsc->pclient,
-				SDE_POWER_HANDLE_DATA_BUS_CLIENT_RT,
 				i, rsc->bw_config.ab_vote[i],
 				rsc->bw_config.ib_vote[i]);
 		rpmh_flush(rsc->rpmh_dev);
@@ -1046,7 +985,7 @@ int sde_rsc_client_trigger_vote(struct sde_rsc_client *caller_client,
 		rsc->hw_ops.tcs_use_ok(rsc);
 
 end:
-	sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false);
+	pm_runtime_put_sync(rsc->dev);
 clk_enable_fail:
 	mutex_unlock(&rsc->client_lock);
 
@@ -1353,8 +1292,7 @@ static void sde_rsc_deinit(struct platform_device *pdev,
 	if (!rsc)
 		return;
 
-	if (rsc->pclient)
-		sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false);
+	pm_runtime_put_sync(rsc->dev);
 	if (rsc->sw_fs_enabled)
 		regulator_disable(rsc->fs);
 	if (rsc->fs)
@@ -1363,14 +1301,64 @@ static void sde_rsc_deinit(struct platform_device *pdev,
 		msm_dss_iounmap(&rsc->wrapper_io);
 	if (rsc->drv_io.base)
 		msm_dss_iounmap(&rsc->drv_io);
-	if (rsc->pclient)
-		sde_power_client_destroy(&rsc->phandle, rsc->pclient);
 
 	sde_power_resource_deinit(pdev, &rsc->phandle);
 	debugfs_remove_recursive(rsc->debugfs_root);
 	kfree(rsc);
 }
 
+#ifdef CONFIG_PM
+static int sde_rsc_runtime_suspend(struct device *dev)
+{
+	struct sde_rsc_priv *rsc = dev_get_drvdata(dev);
+	struct dss_module_power *mp;
+
+	if (!rsc) {
+		pr_err("invalid drv data\n");
+		return -EINVAL;
+	}
+
+	mp = &rsc->phandle.mp;
+	msm_dss_enable_clk(mp->clk_config, mp->num_clk, false);
+	msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg, false);
+
+	return 0;
+}
+
+static int sde_rsc_runtime_resume(struct device *dev)
+{
+	struct sde_rsc_priv *rsc = dev_get_drvdata(dev);
+	struct dss_module_power *mp;
+	int rc = 0;
+
+	if (!rsc) {
+		pr_err("invalid drv data\n");
+		return -EINVAL;
+	}
+
+	mp = &rsc->phandle.mp;
+	rc = msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg, true);
+	if (rc) {
+		pr_err("failed to enable vregs rc=%d\n", rc);
+		goto end;
+	}
+
+	rc = msm_dss_enable_clk(mp->clk_config, mp->num_clk, true);
+	if (rc) {
+		pr_err("clock enable failed rc:%d\n", rc);
+		msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg, false);
+	}
+
+end:
+	return rc;
+}
+#endif
+
+static const struct dev_pm_ops sde_rsc_pm_ops = {
+	SET_RUNTIME_PM_OPS(sde_rsc_runtime_suspend,
+				sde_rsc_runtime_resume, NULL)
+};
+
 /**
  * sde_rsc_bind - bind rsc device with controlling device
  * @dev:        Pointer to base of platform device
@@ -1464,6 +1452,7 @@ static int sde_rsc_probe(struct platform_device *pdev)
 	}
 
 	platform_set_drvdata(pdev, rsc);
+	rsc->dev = &pdev->dev;
 	of_property_read_u32(pdev->dev.of_node, "qcom,sde-rsc-version",
 								&rsc->version);
 
@@ -1492,20 +1481,6 @@ static int sde_rsc_probe(struct platform_device *pdev)
 		goto sde_rsc_fail;
 	}
 
-	rsc->pclient = sde_power_client_create(&rsc->phandle, "rsc");
-	if (IS_ERR_OR_NULL(rsc->pclient)) {
-		ret = PTR_ERR(rsc->pclient);
-		rsc->pclient = NULL;
-		pr_err("sde rsc:power client create failed ret:%d\n", ret);
-		goto sde_rsc_fail;
-	}
-
-	/**
-	 * sde rsc should always vote through enable path, sleep vote is
-	 * set to "0" by default.
-	 */
-	sde_power_data_bus_state_update(&rsc->phandle, true);
-
 	rsc->rpmh_dev = rpmh_dev[SDE_RSC_INDEX + counter];
 	if (IS_ERR_OR_NULL(rsc->rpmh_dev)) {
 		ret = !rsc->rpmh_dev ? -EINVAL : PTR_ERR(rsc->rpmh_dev);
@@ -1550,15 +1525,17 @@ static int sde_rsc_probe(struct platform_device *pdev)
 
 	rsc->sw_fs_enabled = true;
 
-	if (sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, true)) {
-		pr_err("failed to enable sde rsc power resources\n");
+	pm_runtime_enable(rsc->dev);
+	ret = pm_runtime_get_sync(rsc->dev);
+	if (ret < 0) {
+		pr_err("failed to enable sde rsc power resources rc:%d\n", ret);
 		goto sde_rsc_fail;
 	}
 
 	if (sde_rsc_timer_calculate(rsc, NULL, SDE_RSC_IDLE_STATE))
 		goto sde_rsc_fail;
 
-	sde_rsc_clk_enable(&rsc->phandle, rsc->pclient, false);
+	pm_runtime_put_sync(rsc->dev);
 
 	INIT_LIST_HEAD(&rsc->client_list);
 	INIT_LIST_HEAD(&rsc->event_list);
@@ -1636,6 +1613,7 @@ static struct platform_driver sde_rsc_platform_driver = {
 		.name   = "sde_rsc",
 		.of_match_table = dt_match,
 		.suppress_bind_attrs = true,
+		.pm     = &sde_rsc_pm_ops,
 	},
 };
 

msm/sde_rsc_priv.h

@@ -141,7 +141,6 @@ struct sde_rsc_bw_config {
  * struct sde_rsc_priv: sde resource state coordinator(rsc) private handle
  * @version:		rsc sequence version
  * @phandle:		module power handle for clocks
- * @pclient:		module power client of phandle
  * @fs:			"MDSS GDSC" handle
  * @sw_fs_enabled:	track "MDSS GDSC" sw vote during probe
  *
@@ -179,11 +178,11 @@ struct sde_rsc_bw_config {
  * rsc_vsync_wait:   Refcount to indicate if we have to wait for the vsync.
  * rsc_vsync_waitq:   Queue to wait for the vsync.
  * bw_config:		check sde_rsc_bw_config structure description.
+ * dev:			rsc device node
  */
 struct sde_rsc_priv {
 	u32 version;
 	struct sde_power_handle phandle;
-	struct sde_power_client *pclient;
 	struct regulator *fs;
 	bool sw_fs_enabled;
 
@@ -218,6 +217,7 @@ struct sde_rsc_priv {
 	wait_queue_head_t rsc_vsync_waitq;
 
 	struct sde_rsc_bw_config bw_config;
+	struct device *dev;
 };
 
 /**