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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-14 10:33:11 +0100 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-22 14:39:27 +0100 |
| commit | 7fe09324dfbedeac3efdff93beab5fc01e771c1a (patch) | |
| tree | b334ef5f347c572e701055e6052acabcdc70231a | |
| parent | b860648da16c9996259d26227f273bb4416b162a (diff) | |
| download | linux-7fe09324dfbedeac3efdff93beab5fc01e771c1a.tar.gz linux-7fe09324dfbedeac3efdff93beab5fc01e771c1a.tar.bz2 linux-7fe09324dfbedeac3efdff93beab5fc01e771c1a.zip | |
pwm: visconti: Make use of devm_pwmchip_alloc() function
This prepares the pwm-visconti 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/24e779de69365686bb004742cd8f07cbda131212.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
| -rw-r--r-- | drivers/pwm/pwm-visconti.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/pwm/pwm-visconti.c b/drivers/pwm/pwm-visconti.c index 8d736d558122..9e55380957be 100644 --- a/drivers/pwm/pwm-visconti.c +++ b/drivers/pwm/pwm-visconti.c @@ -34,13 +34,12 @@ #define PIPGM_PWMC_POLARITY_MASK GENMASK(5, 5) struct visconti_pwm_chip { - struct pwm_chip chip; void __iomem *base; }; static inline struct visconti_pwm_chip *visconti_pwm_from_chip(struct pwm_chip *chip) { - return container_of(chip, struct visconti_pwm_chip, chip); + return pwmchip_get_drvdata(chip); } static int visconti_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, @@ -134,22 +133,22 @@ static const struct pwm_ops visconti_pwm_ops = { static int visconti_pwm_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct pwm_chip *chip; struct visconti_pwm_chip *priv; int ret; - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; + chip = devm_pwmchip_alloc(dev, 4, sizeof(*priv)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + priv = visconti_pwm_from_chip(chip); priv->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(priv->base)) return PTR_ERR(priv->base); - priv->chip.dev = dev; - priv->chip.ops = &visconti_pwm_ops; - priv->chip.npwm = 4; + chip->ops = &visconti_pwm_ops; - ret = devm_pwmchip_add(&pdev->dev, &priv->chip); + ret = devm_pwmchip_add(&pdev->dev, chip); if (ret < 0) return dev_err_probe(&pdev->dev, ret, "Cannot register visconti PWM\n"); |