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pwm: meson: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-meson 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/6cc57880e910e6ffd8df15bc4a41c42fe9523293.1707900770.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 10:31:59 +01:00
parent e369035a98
commit 28ecf9bd5e
1 changed files with 9 additions and 10 deletions
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19
drivers/pwm/pwm-meson.c
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@@ -102,7 +102,6 @@ struct meson_pwm_data {
};
struct meson_pwm {
struct pwm_chip chip;
const struct meson_pwm_data *data;
struct meson_pwm_channel channels[MESON_NUM_PWMS];
void __iomem *base;
@@ -115,7 +114,7 @@ struct meson_pwm {
static inline struct meson_pwm *to_meson_pwm(struct pwm_chip *chip)
{
return container_of(chip, struct meson_pwm, chip);
return pwmchip_get_drvdata(chip);
}
static int meson_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
@@ -529,29 +528,29 @@ static int meson_pwm_init_channels(struct pwm_chip *chip)
static int meson_pwm_probe(struct platform_device *pdev)
{
struct pwm_chip *chip;
struct meson_pwm *meson;
int err;
meson = devm_kzalloc(&pdev->dev, sizeof(*meson), GFP_KERNEL);
if (!meson)
return -ENOMEM;
chip = devm_pwmchip_alloc(&pdev->dev, MESON_NUM_PWMS, sizeof(*meson));
if (IS_ERR(chip))
return PTR_ERR(chip);
meson = to_meson_pwm(chip);
meson->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(meson->base))
return PTR_ERR(meson->base);
spin_lock_init(&meson->lock);
meson->chip.dev = &pdev->dev;
meson->chip.ops = &meson_pwm_ops;
meson->chip.npwm = MESON_NUM_PWMS;
chip->ops = &meson_pwm_ops;
meson->data = of_device_get_match_data(&pdev->dev);
err = meson_pwm_init_channels(&meson->chip);
err = meson_pwm_init_channels(chip);
if (err < 0)
return err;
err = devm_pwmchip_add(&pdev->dev, &meson->chip);
err = devm_pwmchip_add(&pdev->dev, chip);
if (err < 0)
return dev_err_probe(&pdev->dev, err,
"failed to register PWM chip\n");