drm/msm: Convert to use resource-managed OPP API

Use resource-managed OPP API to simplify code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20210314163408.22292-12-digetx@gmail.comReviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>

drivers/gpu/drm/msm/adreno/a5xx_gpu.c

@@ -1705,7 +1705,7 @@ static void check_speed_bin(struct device *dev)
 		nvmem_cell_put(cell);
 	}
 
-	dev_pm_opp_set_supported_hw(dev, &val, 1);
+	devm_pm_opp_set_supported_hw(dev, &val, 1);
 }
 
 struct msm_gpu *a5xx_gpu_init(struct drm_device *dev)

drivers/gpu/drm/msm/adreno/a6xx_gmu.c

@@ -1346,7 +1346,7 @@ static int a6xx_gmu_pwrlevels_probe(struct a6xx_gmu *gmu)
 	 * The GMU handles its own frequency switching so build a list of
 	 * available frequencies to send during initialization
 	 */
-	ret = dev_pm_opp_of_add_table(gmu->dev);
+	ret = devm_pm_opp_of_add_table(gmu->dev);
 	if (ret) {
 		DRM_DEV_ERROR(gmu->dev, "Unable to set the OPP table for the GMU\n");
 		return ret;

drivers/gpu/drm/msm/adreno/a6xx_gpu.c

@@ -1339,9 +1339,6 @@ static void a6xx_destroy(struct msm_gpu *gpu)
 
 	adreno_gpu_cleanup(adreno_gpu);
 
-	if (a6xx_gpu->opp_table)
-		dev_pm_opp_put_supported_hw(a6xx_gpu->opp_table);
-
 	kfree(a6xx_gpu);
 }
 
@@ -1474,7 +1471,6 @@ static u32 fuse_to_supp_hw(struct device *dev, u32 revn, u32 fuse)
 static int a6xx_set_supported_hw(struct device *dev, struct a6xx_gpu *a6xx_gpu,
 		u32 revn)
 {
-	struct opp_table *opp_table;
 	u32 supp_hw = UINT_MAX;
 	u16 speedbin;
 	int ret;
@@ -1497,11 +1493,10 @@ static int a6xx_set_supported_hw(struct device *dev, struct a6xx_gpu *a6xx_gpu,
 	supp_hw = fuse_to_supp_hw(dev, revn, speedbin);
 
 done:
-	opp_table = dev_pm_opp_set_supported_hw(dev, &supp_hw, 1);
-	if (IS_ERR(opp_table))
-		return PTR_ERR(opp_table);
+	ret = devm_pm_opp_set_supported_hw(dev, &supp_hw, 1);
+	if (ret)
+		return ret;
 
-	a6xx_gpu->opp_table = opp_table;
 	return 0;
 }
 

drivers/gpu/drm/msm/adreno/a6xx_gpu.h

@@ -33,8 +33,6 @@ struct a6xx_gpu {
 	void *llc_slice;
 	void *htw_llc_slice;
 	bool have_mmu500;
-
-	struct opp_table *opp_table;
 };
 
 #define to_a6xx_gpu(x) container_of(x, struct a6xx_gpu, base)

drivers/gpu/drm/msm/adreno/adreno_gpu.c

@@ -841,7 +841,7 @@ static void adreno_get_pwrlevels(struct device *dev,
 	if (!of_find_property(dev->of_node, "operating-points-v2", NULL))
 		ret = adreno_get_legacy_pwrlevels(dev);
 	else {
-		ret = dev_pm_opp_of_add_table(dev);
+		ret = devm_pm_opp_of_add_table(dev);
 		if (ret)
 			DRM_DEV_ERROR(dev, "Unable to set the OPP table\n");
 	}

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c

@@ -1141,21 +1141,21 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
 	if (!dpu_kms)
 		return -ENOMEM;
 
-	dpu_kms->opp_table = dev_pm_opp_set_clkname(dev, "core");
-	if (IS_ERR(dpu_kms->opp_table))
-		return PTR_ERR(dpu_kms->opp_table);
+	ret = devm_pm_opp_set_clkname(dev, "core");
+	if (ret)
+		return ret;
 	/* OPP table is optional */
-	ret = dev_pm_opp_of_add_table(dev);
+	ret = devm_pm_opp_of_add_table(dev);
 	if (ret && ret != -ENODEV) {
 		dev_err(dev, "invalid OPP table in device tree\n");
-		goto put_clkname;
+		return ret;
 	}
 
 	mp = &dpu_kms->mp;
 	ret = msm_dss_parse_clock(pdev, mp);
 	if (ret) {
 		DPU_ERROR("failed to parse clocks, ret=%d\n", ret);
-		goto err;
+		return ret;
 	}
 
 	platform_set_drvdata(pdev, dpu_kms);
@@ -1163,7 +1163,7 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
 	ret = msm_kms_init(&dpu_kms->base, &kms_funcs);
 	if (ret) {
 		DPU_ERROR("failed to init kms, ret=%d\n", ret);
-		goto err;
+		return ret;
 	}
 	dpu_kms->dev = ddev;
 	dpu_kms->pdev = pdev;
@@ -1172,11 +1172,7 @@ static int dpu_bind(struct device *dev, struct device *master, void *data)
 	dpu_kms->rpm_enabled = true;
 
 	priv->kms = &dpu_kms->base;
-	return ret;
-err:
-	dev_pm_opp_of_remove_table(dev);
-put_clkname:
-	dev_pm_opp_put_clkname(dpu_kms->opp_table);
+
 	return ret;
 }
 
@@ -1192,9 +1188,6 @@ static void dpu_unbind(struct device *dev, struct device *master, void *data)
 
 	if (dpu_kms->rpm_enabled)
 		pm_runtime_disable(&pdev->dev);
-
-	dev_pm_opp_of_remove_table(dev);
-	dev_pm_opp_put_clkname(dpu_kms->opp_table);
 }
 
 static const struct component_ops dpu_ops = {

drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h

@@ -128,8 +128,6 @@ struct dpu_kms {
 	struct platform_device *pdev;
 	bool rpm_enabled;
 
-	struct opp_table *opp_table;
-
 	struct dss_module_power mp;
 
 	/* reference count bandwidth requests, so we know when we can

drivers/gpu/drm/msm/dp/dp_ctrl.c

@@ -77,8 +77,6 @@ struct dp_ctrl_private {
 	struct dp_parser *parser;
 	struct dp_catalog *catalog;
 
-	struct opp_table *opp_table;
-
 	struct completion idle_comp;
 	struct completion video_comp;
 };
@@ -1941,20 +1939,17 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
 		return ERR_PTR(-ENOMEM);
 	}
 
-	ctrl->opp_table = dev_pm_opp_set_clkname(dev, "ctrl_link");
-	if (IS_ERR(ctrl->opp_table)) {
+	ret = devm_pm_opp_set_clkname(dev, "ctrl_link");
+	if (ret) {
 		dev_err(dev, "invalid DP OPP table in device tree\n");
-		/* caller do PTR_ERR(ctrl->opp_table) */
-		return (struct dp_ctrl *)ctrl->opp_table;
+		/* caller do PTR_ERR(opp_table) */
+		return (struct dp_ctrl *)ERR_PTR(ret);
 	}
 
 	/* OPP table is optional */
-	ret = dev_pm_opp_of_add_table(dev);
-	if (ret) {
+	ret = devm_pm_opp_of_add_table(dev);
+	if (ret)
 		dev_err(dev, "failed to add DP OPP table\n");
-		dev_pm_opp_put_clkname(ctrl->opp_table);
-		ctrl->opp_table = NULL;
-	}
 
 	init_completion(&ctrl->idle_comp);
 	init_completion(&ctrl->video_comp);
@@ -1970,16 +1965,3 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
 
 	return &ctrl->dp_ctrl;
 }
-
-void dp_ctrl_put(struct dp_ctrl *dp_ctrl)
-{
-	struct dp_ctrl_private *ctrl;
-
-	ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
-
-	if (ctrl->opp_table) {
-		dev_pm_opp_of_remove_table(ctrl->dev);
-		dev_pm_opp_put_clkname(ctrl->opp_table);
-		ctrl->opp_table = NULL;
-	}
-}

drivers/gpu/drm/msm/dp/dp_ctrl.h

@@ -33,6 +33,5 @@ struct dp_ctrl *dp_ctrl_get(struct device *dev, struct dp_link *link,
 			struct dp_panel *panel,	struct drm_dp_aux *aux,
 			struct dp_power *power, struct dp_catalog *catalog,
 			struct dp_parser *parser);
-void dp_ctrl_put(struct dp_ctrl *dp_ctrl);
 
 #endif /* _DP_CTRL_H_ */

drivers/gpu/drm/msm/dp/dp_display.c

@@ -747,7 +747,6 @@ static int dp_irq_hpd_handle(struct dp_display_private *dp, u32 data)
 static void dp_display_deinit_sub_modules(struct dp_display_private *dp)
 {
 	dp_debug_put(dp->debug);
-	dp_ctrl_put(dp->ctrl);
 	dp_panel_put(dp->panel);
 	dp_aux_put(dp->aux);
 	dp_audio_put(dp->audio);
@@ -841,13 +840,11 @@ static int dp_init_sub_modules(struct dp_display_private *dp)
 		rc = PTR_ERR(dp->audio);
 		pr_err("failed to initialize audio, rc = %d\n", rc);
 		dp->audio = NULL;
-		goto error_audio;
+		goto error_ctrl;
 	}
 
 	return rc;
 
-error_audio:
-	dp_ctrl_put(dp->ctrl);
 error_ctrl:
 	dp_panel_put(dp->panel);
 error_link:

drivers/gpu/drm/msm/dsi/dsi_host.c

@@ -114,8 +114,6 @@ struct msm_dsi_host {
 	struct clk *pixel_clk_src;
 	struct clk *byte_intf_clk;
 
-	struct opp_table *opp_table;
-
 	u32 byte_clk_rate;
 	u32 pixel_clk_rate;
 	u32 esc_clk_rate;
@@ -1885,14 +1883,13 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi)
 		goto fail;
 	}
 
-	msm_host->opp_table = dev_pm_opp_set_clkname(&pdev->dev, "byte");
-	if (IS_ERR(msm_host->opp_table))
-		return PTR_ERR(msm_host->opp_table);
+	ret = devm_pm_opp_set_clkname(&pdev->dev, "byte");
+	if (ret)
+		return ret;
 	/* OPP table is optional */
-	ret = dev_pm_opp_of_add_table(&pdev->dev);
+	ret = devm_pm_opp_of_add_table(&pdev->dev);
 	if (ret && ret != -ENODEV) {
 		dev_err(&pdev->dev, "invalid OPP table in device tree\n");
-		dev_pm_opp_put_clkname(msm_host->opp_table);
 		return ret;
 	}
 
@@ -1931,8 +1928,6 @@ void msm_dsi_host_destroy(struct mipi_dsi_host *host)
 	mutex_destroy(&msm_host->cmd_mutex);
 	mutex_destroy(&msm_host->dev_mutex);
 
-	dev_pm_opp_of_remove_table(&msm_host->pdev->dev);
-	dev_pm_opp_put_clkname(msm_host->opp_table);
 	pm_runtime_disable(&msm_host->pdev->dev);
 }