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pwm: lpc18xx-sct: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-lpc18xx-sct 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/d480891340e927705843cd09e5777d4daaa6c9cc.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 10:31:50 +01:00
parent 6a79dc8342
commit 1dc7dcba0b
1 changed files with 5 additions and 9 deletions
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14
drivers/pwm/pwm-lpc18xx-sct.c
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@ -92,7 +92,6 @@ struct lpc18xx_pwm_data {
};
struct lpc18xx_pwm_chip {
struct pwm_chip chip;
void __iomem *base;
struct clk *pwm_clk;
unsigned long clk_rate;
@ -109,7 +108,7 @@ struct lpc18xx_pwm_chip {
static inline struct lpc18xx_pwm_chip *
to_lpc18xx_pwm_chip(struct pwm_chip *chip)
{
return container_of(chip, struct lpc18xx_pwm_chip, chip);
return pwmchip_get_drvdata(chip);
}
static inline void lpc18xx_pwm_writel(struct lpc18xx_pwm_chip *lpc18xx_pwm,
@ -353,11 +352,10 @@ static int lpc18xx_pwm_probe(struct platform_device *pdev)
int ret;
u64 val;
lpc18xx_pwm = devm_kzalloc(&pdev->dev, sizeof(*lpc18xx_pwm),
GFP_KERNEL);
if (!lpc18xx_pwm)
return -ENOMEM;
chip = &lpc18xx_pwm->chip;
chip = devm_pwmchip_alloc(&pdev->dev, LPC18XX_NUM_PWMS, sizeof(*lpc18xx_pwm));
if (IS_ERR(chip))
return PTR_ERR(chip);
lpc18xx_pwm = to_lpc18xx_pwm_chip(chip);
lpc18xx_pwm->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(lpc18xx_pwm->base))
@ -388,9 +386,7 @@ static int lpc18xx_pwm_probe(struct platform_device *pdev)
lpc18xx_pwm->min_period_ns = DIV_ROUND_UP(NSEC_PER_SEC,
lpc18xx_pwm->clk_rate);
chip->dev = &pdev->dev;
chip->ops = &lpc18xx_pwm_ops;
chip->npwm = LPC18XX_NUM_PWMS;
/* SCT counter must be in unify (32 bit) mode */
lpc18xx_pwm_writel(lpc18xx_pwm, LPC18XX_PWM_CONFIG,