drm/lima: 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>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>

Author: TinyWindzz

drivers/gpu/drm/lima/lima_devfreq.c

@@ -99,20 +99,12 @@ void lima_devfreq_fini(struct lima_device *ldev)
 		devm_devfreq_remove_device(ldev->dev, devfreq->devfreq);
 		devfreq->devfreq = NULL;
 	}
-
-	dev_pm_opp_of_remove_table(ldev->dev);
-
-	dev_pm_opp_put_regulators(devfreq->regulators_opp_table);
-	dev_pm_opp_put_clkname(devfreq->clkname_opp_table);
-	devfreq->regulators_opp_table = NULL;
-	devfreq->clkname_opp_table = NULL;
 }
 
 int lima_devfreq_init(struct lima_device *ldev)
 {
 	struct thermal_cooling_device *cooling;
 	struct device *dev = ldev->dev;
-	struct opp_table *opp_table;
 	struct devfreq *devfreq;
 	struct lima_devfreq *ldevfreq = &ldev->devfreq;
 	struct dev_pm_opp *opp;
@@ -125,40 +117,28 @@ int lima_devfreq_init(struct lima_device *ldev)
 
 	spin_lock_init(&ldevfreq->lock);
 
-	opp_table = dev_pm_opp_set_clkname(dev, "core");
-	if (IS_ERR(opp_table)) {
-		ret = PTR_ERR(opp_table);
-		goto err_fini;
-	}
-
-	ldevfreq->clkname_opp_table = opp_table;
-
-	opp_table = dev_pm_opp_set_regulators(dev,
-					      (const char *[]){ "mali" },
-					      1);
-	if (IS_ERR(opp_table)) {
-		ret = PTR_ERR(opp_table);
+	ret = devm_pm_opp_set_clkname(dev, "core");
+	if (ret)
+		return ret;
 
+	ret = devm_pm_opp_set_regulators(dev, (const char *[]){ "mali" }, 1);
+	if (ret) {
 		/* Continue if the optional regulator is missing */
 		if (ret != -ENODEV)
-			goto err_fini;
-	} else {
-		ldevfreq->regulators_opp_table = opp_table;
+			return ret;
 	}
 
-	ret = dev_pm_opp_of_add_table(dev);
+	ret = devm_pm_opp_of_add_table(dev);
 	if (ret)
-		goto err_fini;
+		return ret;
 
 	lima_devfreq_reset(ldevfreq);
 
 	cur_freq = clk_get_rate(ldev->clk_gpu);
 
 	opp = devfreq_recommended_opp(dev, &cur_freq, 0);
-	if (IS_ERR(opp)) {
-		ret = PTR_ERR(opp);
-		goto err_fini;
-	}
+	if (IS_ERR(opp))
+		return PTR_ERR(opp);
 
 	lima_devfreq_profile.initial_freq = cur_freq;
 	dev_pm_opp_put(opp);
@@ -167,8 +147,7 @@ int lima_devfreq_init(struct lima_device *ldev)
 					  DEVFREQ_GOV_SIMPLE_ONDEMAND, NULL);
 	if (IS_ERR(devfreq)) {
 		dev_err(dev, "Couldn't initialize GPU devfreq\n");
-		ret = PTR_ERR(devfreq);
-		goto err_fini;
+		return PTR_ERR(devfreq);
 	}
 
 	ldevfreq->devfreq = devfreq;
@@ -180,10 +159,6 @@ int lima_devfreq_init(struct lima_device *ldev)
 		ldevfreq->cooling = cooling;
 
 	return 0;
-
-err_fini:
-	lima_devfreq_fini(ldev);
-	return ret;
 }
 
 void lima_devfreq_record_busy(struct lima_devfreq *devfreq)

drivers/gpu/drm/lima/lima_devfreq.h

@@ -8,15 +8,12 @@
 #include <linux/ktime.h>
 
 struct devfreq;
-struct opp_table;
 struct thermal_cooling_device;
 
 struct lima_device;
 
 struct lima_devfreq {
 	struct devfreq *devfreq;
-	struct opp_table *clkname_opp_table;
-	struct opp_table *regulators_opp_table;
 	struct thermal_cooling_device *cooling;
 
 	ktime_t busy_time;