diff options
Diffstat (limited to 'drivers/pwm/pwm-berlin.c')
| -rw-r--r-- | drivers/pwm/pwm-berlin.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/pwm/pwm-berlin.c b/drivers/pwm/pwm-berlin.c index 442913232dc0..831aed228caf 100644 --- a/drivers/pwm/pwm-berlin.c +++ b/drivers/pwm/pwm-berlin.c @@ -49,7 +49,6 @@ struct berlin_pwm_channel { }; struct berlin_pwm_chip { - struct pwm_chip chip; struct clk *clk; void __iomem *base; struct berlin_pwm_channel channel[BERLIN_PWM_NUMPWMS]; @@ -57,7 +56,7 @@ struct berlin_pwm_chip { static inline struct berlin_pwm_chip *to_berlin_pwm_chip(struct pwm_chip *chip) { - return container_of(chip, struct berlin_pwm_chip, chip); + return pwmchip_get_drvdata(chip); } static inline u32 berlin_pwm_readl(struct berlin_pwm_chip *bpc, @@ -198,12 +197,14 @@ MODULE_DEVICE_TABLE(of, berlin_pwm_match); static int berlin_pwm_probe(struct platform_device *pdev) { + struct pwm_chip *chip; struct berlin_pwm_chip *bpc; int ret; - bpc = devm_kzalloc(&pdev->dev, sizeof(*bpc), GFP_KERNEL); - if (!bpc) - return -ENOMEM; + chip = devm_pwmchip_alloc(&pdev->dev, BERLIN_PWM_NUMPWMS, sizeof(*bpc)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + bpc = to_berlin_pwm_chip(chip); bpc->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(bpc->base)) @@ -213,25 +214,24 @@ static int berlin_pwm_probe(struct platform_device *pdev) if (IS_ERR(bpc->clk)) return PTR_ERR(bpc->clk); - bpc->chip.dev = &pdev->dev; - bpc->chip.ops = &berlin_pwm_ops; - bpc->chip.npwm = BERLIN_PWM_NUMPWMS; + chip->ops = &berlin_pwm_ops; - ret = devm_pwmchip_add(&pdev->dev, &bpc->chip); + ret = devm_pwmchip_add(&pdev->dev, chip); if (ret < 0) return dev_err_probe(&pdev->dev, ret, "failed to add PWM chip\n"); - platform_set_drvdata(pdev, bpc); + platform_set_drvdata(pdev, chip); return 0; } static int berlin_pwm_suspend(struct device *dev) { - struct berlin_pwm_chip *bpc = dev_get_drvdata(dev); + struct pwm_chip *chip = dev_get_drvdata(dev); + struct berlin_pwm_chip *bpc = to_berlin_pwm_chip(chip); unsigned int i; - for (i = 0; i < bpc->chip.npwm; i++) { + for (i = 0; i < chip->npwm; i++) { struct berlin_pwm_channel *channel = &bpc->channel[i]; channel->enable = berlin_pwm_readl(bpc, i, BERLIN_PWM_ENABLE); @@ -247,7 +247,8 @@ static int berlin_pwm_suspend(struct device *dev) static int berlin_pwm_resume(struct device *dev) { - struct berlin_pwm_chip *bpc = dev_get_drvdata(dev); + struct pwm_chip *chip = dev_get_drvdata(dev); + struct berlin_pwm_chip *bpc = to_berlin_pwm_chip(chip); unsigned int i; int ret; @@ -255,7 +256,7 @@ static int berlin_pwm_resume(struct device *dev) if (ret) return ret; - for (i = 0; i < bpc->chip.npwm; i++) { + for (i = 0; i < chip->npwm; i++) { struct berlin_pwm_channel *channel = &bpc->channel[i]; berlin_pwm_writel(bpc, i, channel->ctrl, BERLIN_PWM_CONTROL); |