pwm: rockchip: Make use of devm_pwmchip_alloc() function

This prepares the pwm-rockchip driver to further changes of the pwm core
outlined in the commit introducing devm_pwmchip_alloc(). There is no
intended semantical change and the driver should behave as before.

Link: https://lore.kernel.org/r/61a3f48710e3e795beb2e496c8c673bbc0f6c932.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/pwm/pwm-rockchip.c b/drivers/pwm/pwm-rockchip.c
index c001eb6b17ae8a2608bc480940fad253f40c86db..0fa7575dbb546c252eeb47fdc54d6e18b08ba261 100644 (file)
--- a/drivers/pwm/pwm-rockchip.c
+++ b/drivers/pwm/pwm-rockchip.c
@@ -30,7 +30,6 @@
 #define PWM_LP_DISABLE         (0 << 8)
 
 struct rockchip_pwm_chip {
-       struct pwm_chip chip;
        struct clk *clk;
        struct clk *pclk;
        const struct rockchip_pwm_data *data;
@@ -54,7 +53,7 @@ struct rockchip_pwm_data {
 
 static inline struct rockchip_pwm_chip *to_rockchip_pwm_chip(struct pwm_chip *chip)
 {
-       return container_of(chip, struct rockchip_pwm_chip, chip);
+       return pwmchip_get_drvdata(chip);
 }
 
 static int rockchip_pwm_get_state(struct pwm_chip *chip,
@@ -302,10 +301,10 @@ static int rockchip_pwm_probe(struct platform_device *pdev)
        bool enabled;
        int ret, count;
 
-       pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
-       if (!pc)
-               return -ENOMEM;
-       chip = &pc->chip;
+       chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*pc));
+       if (IS_ERR(chip))
+               return PTR_ERR(chip);
+       pc = to_rockchip_pwm_chip(chip);
 
        pc->base = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(pc->base))
@@ -342,9 +341,7 @@ static int rockchip_pwm_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, chip);
 
        pc->data = device_get_match_data(&pdev->dev);
-       chip->dev = &pdev->dev;
        chip->ops = &rockchip_pwm_ops;
-       chip->npwm = 1;
 
        enable_conf = pc->data->enable_conf;
        ctrl = readl_relaxed(pc->base + pc->data->regs.ctrl);