pwm: tiehrpwm: Make use of devm_pwmchip_alloc() function

This prepares the pwm-tiecap 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/62fbac428cae0942f8e88234bf249537fcd890a3.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/pwm/pwm-tiehrpwm.c b/drivers/pwm/pwm-tiehrpwm.c
index 9a7c721961738b7e5eeff4609f1f988f7badb1ff..e5104725d9b702ed5bd892c00ef76ac0c4596d69 100644 (file)
--- a/drivers/pwm/pwm-tiehrpwm.c
+++ b/drivers/pwm/pwm-tiehrpwm.c
@@ -105,7 +105,6 @@ struct ehrpwm_context {
 };
 
 struct ehrpwm_pwm_chip {
-       struct pwm_chip chip;
        unsigned long clk_rate;
        void __iomem *mmio_base;
        unsigned long period_cycles[NUM_PWM_CHANNEL];
@@ -116,7 +115,7 @@ struct ehrpwm_pwm_chip {
 
 static inline struct ehrpwm_pwm_chip *to_ehrpwm_pwm_chip(struct pwm_chip *chip)
 {
-       return container_of(chip, struct ehrpwm_pwm_chip, chip);
+       return pwmchip_get_drvdata(chip);
 }
 
 static inline u16 ehrpwm_read(void __iomem *base, unsigned int offset)
@@ -454,9 +453,10 @@ static int ehrpwm_pwm_probe(struct platform_device *pdev)
        struct clk *clk;
        int ret;
 
-       pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
-       if (!pc)
-               return -ENOMEM;
+       chip = devm_pwmchip_alloc(&pdev->dev, NUM_PWM_CHANNEL, sizeof(*pc));
+       if (IS_ERR(chip))
+               return PTR_ERR(chip);
+       pc = to_ehrpwm_pwm_chip(chip);
 
        clk = devm_clk_get(&pdev->dev, "fck");
        if (IS_ERR(clk)) {
@@ -475,10 +475,7 @@ static int ehrpwm_pwm_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
-       chip = &pc->chip;
-       chip->dev = &pdev->dev;
        chip->ops = &ehrpwm_pwm_ops;
-       chip->npwm = NUM_PWM_CHANNEL;
 
        pc->mmio_base = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(pc->mmio_base))