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pwm: atmel: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-atmel 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/f2a83af5660de461b4dcaf76929e9813bddfeff1.1707900770.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 10:30:57 +01:00
parent f9e4d438e1
commit 8de8ccaca9
1 changed files with 5 additions and 8 deletions
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13
drivers/pwm/pwm-atmel.c
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@ -77,7 +77,6 @@ struct atmel_pwm_data {
}; };
struct atmel_pwm_chip { struct atmel_pwm_chip {
struct pwm_chip chip;
struct clk *clk; struct clk *clk;
void __iomem *base; void __iomem *base;
const struct atmel_pwm_data *data; const struct atmel_pwm_data *data;
@ -99,7 +98,7 @@ struct atmel_pwm_chip {
static inline struct atmel_pwm_chip *to_atmel_pwm_chip(struct pwm_chip *chip) static inline struct atmel_pwm_chip *to_atmel_pwm_chip(struct pwm_chip *chip)
{ {
return container_of(chip, struct atmel_pwm_chip, chip); return pwmchip_get_drvdata(chip);
} }
static inline u32 atmel_pwm_readl(struct atmel_pwm_chip *chip, static inline u32 atmel_pwm_readl(struct atmel_pwm_chip *chip,
@ -502,10 +501,11 @@ static int atmel_pwm_probe(struct platform_device *pdev)
struct pwm_chip *chip; struct pwm_chip *chip;
int ret; int ret;
atmel_pwm = devm_kzalloc(&pdev->dev, sizeof(*atmel_pwm), GFP_KERNEL); chip = devm_pwmchip_alloc(&pdev->dev, 4, sizeof(*atmel_pwm));
if (!atmel_pwm) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
atmel_pwm = to_atmel_pwm_chip(chip);
atmel_pwm->data = of_device_get_match_data(&pdev->dev); atmel_pwm->data = of_device_get_match_data(&pdev->dev);
atmel_pwm->update_pending = 0; atmel_pwm->update_pending = 0;
@ -520,10 +520,7 @@ static int atmel_pwm_probe(struct platform_device *pdev)
return dev_err_probe(&pdev->dev, PTR_ERR(atmel_pwm->clk), return dev_err_probe(&pdev->dev, PTR_ERR(atmel_pwm->clk),
"failed to get prepared PWM clock\n"); "failed to get prepared PWM clock\n");
chip = &atmel_pwm->chip;
chip->dev = &pdev->dev;
chip->ops = &atmel_pwm_ops; chip->ops = &atmel_pwm_ops;
chip->npwm = 4;
ret = atmel_pwm_enable_clk_if_on(chip, true); ret = atmel_pwm_enable_clk_if_on(chip, true);
if (ret < 0) if (ret < 0)