linux-kernel - [PATCH V2 10/30] devfreq: exynos: Migrate to dev_pm_opp_set

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Date:   Fri,  1 Jul 2022 13:50:05 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Chanwoo Choi <cw00.choi@...sung.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>
Cc:     Viresh Kumar <viresh.kumar@...aro.org>, linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>, Nishanth Menon <nm@...com>,
        linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH V2 10/30] devfreq: exynos: Migrate to dev_pm_opp_set_config()

The OPP core now provides a unified API for setting all configuration
types, i.e. dev_pm_opp_set_config().

Lets start using it.

Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
---
 drivers/devfreq/exynos-bus.c | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index e689101abc93..b5615e667e31 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -33,7 +33,7 @@ struct exynos_bus {
 
 	unsigned long curr_freq;
 
-	struct opp_table *opp_table;
+	int opp_token;
 	struct clk *clk;
 	unsigned int ratio;
 };
@@ -161,8 +161,7 @@ static void exynos_bus_exit(struct device *dev)
 
 	dev_pm_opp_of_remove_table(dev);
 	clk_disable_unprepare(bus->clk);
-	dev_pm_opp_put_regulators(bus->opp_table);
-	bus->opp_table = NULL;
+	dev_pm_opp_clear_config(bus->opp_token);
 }
 
 static void exynos_bus_passive_exit(struct device *dev)
@@ -179,18 +178,20 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
 					struct exynos_bus *bus)
 {
 	struct device *dev = bus->dev;
-	struct opp_table *opp_table;
 	const char *vdd = "vdd";
 	int i, ret, count, size;
+	struct dev_pm_opp_config config = {
+		.regulator_names = &vdd,
+		.regulator_count = 1,
+	};
 
-	opp_table = dev_pm_opp_set_regulators(dev, &vdd, 1);
-	if (IS_ERR(opp_table)) {
-		ret = PTR_ERR(opp_table);
-		dev_err(dev, "failed to set regulators %d\n", ret);
+	ret = dev_pm_opp_set_config(dev, &config);
+	if (ret < 0) {
+		dev_err(dev, "failed to set OPP config %d\n", ret);
 		return ret;
 	}
 
-	bus->opp_table = opp_table;
+	bus->opp_token = ret;
 
 	/*
 	 * Get the devfreq-event devices to get the current utilization of
@@ -236,8 +237,7 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
 	return 0;
 
 err_regulator:
-	dev_pm_opp_put_regulators(bus->opp_table);
-	bus->opp_table = NULL;
+	dev_pm_opp_clear_config(bus->opp_token);
 
 	return ret;
 }
@@ -459,8 +459,7 @@ static int exynos_bus_probe(struct platform_device *pdev)
 	dev_pm_opp_of_remove_table(dev);
 	clk_disable_unprepare(bus->clk);
 err_reg:
-	dev_pm_opp_put_regulators(bus->opp_table);
-	bus->opp_table = NULL;
+	dev_pm_opp_clear_config(bus->opp_token);
 
 	return ret;
 }
-- 
2.31.1.272.g89b43f80a514