pwm: tiecap: Make use of devm_pwmchip_alloc() function

This prepares the pwm-tegra 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/af7846109c0df225126c8e5cd186b89ace70afc0.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

diff --git a/drivers/pwm/pwm-tiecap.c b/drivers/pwm/pwm-tiecap.c
index 558b244f074ac4d3c851ceb0970544de6b7ca0fa..d6c2b1b1387e03a39d7bdefb25e0bab5e3da4b79 100644 (file)
--- a/drivers/pwm/pwm-tiecap.c
+++ b/drivers/pwm/pwm-tiecap.c
@@ -32,7 +32,6 @@ struct ecap_context {
 };
 
 struct ecap_pwm_chip {
-       struct pwm_chip chip;
        unsigned int clk_rate;
        void __iomem *mmio_base;
        struct ecap_context ctx;
@@ -40,7 +39,7 @@ struct ecap_pwm_chip {
 
 static inline struct ecap_pwm_chip *to_ecap_pwm_chip(struct pwm_chip *chip)
 {
-       return container_of(chip, struct ecap_pwm_chip, chip);
+       return pwmchip_get_drvdata(chip);
 }
 
 /*
@@ -222,9 +221,10 @@ static int ecap_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, 1, sizeof(*pc));
+       if (IS_ERR(chip))
+               return PTR_ERR(chip);
+       pc = to_ecap_pwm_chip(chip);
 
        clk = devm_clk_get(&pdev->dev, "fck");
        if (IS_ERR(clk)) {
@@ -245,10 +245,7 @@ static int ecap_pwm_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
-       chip = &pc->chip;
-       chip->dev = &pdev->dev;
        chip->ops = &ecap_pwm_ops;
-       chip->npwm = 1;
 
        pc->mmio_base = devm_platform_ioremap_resource(pdev, 0);
        if (IS_ERR(pc->mmio_base))