diff options
Diffstat (limited to 'drivers/pwm/pwm-ep93xx.c')
| -rw-r--r-- | drivers/pwm/pwm-ep93xx.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/pwm/pwm-ep93xx.c b/drivers/pwm/pwm-ep93xx.c index 51e072572a..666f295413 100644 --- a/drivers/pwm/pwm-ep93xx.c +++ b/drivers/pwm/pwm-ep93xx.c @@ -36,24 +36,23 @@ struct ep93xx_pwm { void __iomem *base; struct clk *clk; - struct pwm_chip chip; }; static inline struct ep93xx_pwm *to_ep93xx_pwm(struct pwm_chip *chip) { - return container_of(chip, struct ep93xx_pwm, chip); + return pwmchip_get_drvdata(chip); } static int ep93xx_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) { - struct platform_device *pdev = to_platform_device(chip->dev); + struct platform_device *pdev = to_platform_device(pwmchip_parent(chip)); return ep93xx_pwm_acquire_gpio(pdev); } static void ep93xx_pwm_free(struct pwm_chip *chip, struct pwm_device *pwm) { - struct platform_device *pdev = to_platform_device(chip->dev); + struct platform_device *pdev = to_platform_device(pwmchip_parent(chip)); ep93xx_pwm_release_gpio(pdev); } @@ -163,12 +162,14 @@ static const struct pwm_ops ep93xx_pwm_ops = { static int ep93xx_pwm_probe(struct platform_device *pdev) { + struct pwm_chip *chip; struct ep93xx_pwm *ep93xx_pwm; int ret; - ep93xx_pwm = devm_kzalloc(&pdev->dev, sizeof(*ep93xx_pwm), GFP_KERNEL); - if (!ep93xx_pwm) - return -ENOMEM; + chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*ep93xx_pwm)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + ep93xx_pwm = to_ep93xx_pwm(chip); ep93xx_pwm->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(ep93xx_pwm->base)) @@ -178,11 +179,9 @@ static int ep93xx_pwm_probe(struct platform_device *pdev) if (IS_ERR(ep93xx_pwm->clk)) return PTR_ERR(ep93xx_pwm->clk); - ep93xx_pwm->chip.dev = &pdev->dev; - ep93xx_pwm->chip.ops = &ep93xx_pwm_ops; - ep93xx_pwm->chip.npwm = 1; + chip->ops = &ep93xx_pwm_ops; - ret = devm_pwmchip_add(&pdev->dev, &ep93xx_pwm->chip); + ret = devm_pwmchip_add(&pdev->dev, chip); if (ret < 0) return ret; |