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pwm: imx1: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-imx1 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.

Also convert the to_pwm_imx1_chip() helper macro to a static inline to
get some type safety.

Link: https://lore.kernel.org/r/c6995e0d281255a7514edf9f25a561302dcaf65f.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König 2024-02-14 10:31:34 +01:00
parent 12ca0c331a
commit 5911fc37c7
1 changed files with 11 additions and 9 deletions
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20
drivers/pwm/pwm-imx1.c
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@ -28,10 +28,12 @@ struct pwm_imx1_chip {
struct clk *clk_ipg;
struct clk *clk_per;
void __iomem *mmio_base;
struct pwm_chip chip;
};
#define to_pwm_imx1_chip(chip) container_of(chip, struct pwm_imx1_chip, chip)
static inline struct pwm_imx1_chip *to_pwm_imx1_chip(struct pwm_chip *chip)
{
return pwmchip_get_drvdata(chip);
}
static int pwm_imx1_clk_prepare_enable(struct pwm_chip *chip)
{
@ -156,11 +158,13 @@ MODULE_DEVICE_TABLE(of, pwm_imx1_dt_ids);
static int pwm_imx1_probe(struct platform_device *pdev)
{
struct pwm_chip *chip;
struct pwm_imx1_chip *imx;
imx = devm_kzalloc(&pdev->dev, sizeof(*imx), GFP_KERNEL);
if (!imx)
return -ENOMEM;
chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*imx));
if (IS_ERR(chip))
return PTR_ERR(chip);
imx = to_pwm_imx1_chip(chip);
imx->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(imx->clk_ipg))
@ -172,15 +176,13 @@ static int pwm_imx1_probe(struct platform_device *pdev)
return dev_err_probe(&pdev->dev, PTR_ERR(imx->clk_per),
"failed to get peripheral clock\n");
imx->chip.ops = &pwm_imx1_ops;
imx->chip.dev = &pdev->dev;
imx->chip.npwm = 1;
chip->ops = &pwm_imx1_ops;
imx->mmio_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(imx->mmio_base))
return PTR_ERR(imx->mmio_base);
return devm_pwmchip_add(&pdev->dev, &imx->chip);
return devm_pwmchip_add(&pdev->dev, chip);
}
static struct platform_driver pwm_imx1_driver = {