diff options
Diffstat (limited to 'drivers/pwm/pwm-bcm-iproc.c')
| -rw-r--r-- | drivers/pwm/pwm-bcm-iproc.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/pwm/pwm-bcm-iproc.c b/drivers/pwm/pwm-bcm-iproc.c index 758254025..f4c9f10e4 100644 --- a/drivers/pwm/pwm-bcm-iproc.c +++ b/drivers/pwm/pwm-bcm-iproc.c @@ -34,14 +34,13 @@ #define IPROC_PWM_PRESCALE_MAX 0x3f struct iproc_pwmc { - struct pwm_chip chip; void __iomem *base; struct clk *clk; }; static inline struct iproc_pwmc *to_iproc_pwmc(struct pwm_chip *chip) { - return container_of(chip, struct iproc_pwmc, chip); + return pwmchip_get_drvdata(chip); } static void iproc_pwmc_enable(struct iproc_pwmc *ip, unsigned int channel) @@ -187,20 +186,20 @@ static const struct pwm_ops iproc_pwm_ops = { static int iproc_pwmc_probe(struct platform_device *pdev) { + struct pwm_chip *chip; struct iproc_pwmc *ip; unsigned int i; u32 value; int ret; - ip = devm_kzalloc(&pdev->dev, sizeof(*ip), GFP_KERNEL); - if (!ip) - return -ENOMEM; + chip = devm_pwmchip_alloc(&pdev->dev, 4, sizeof(*ip)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + ip = to_iproc_pwmc(chip); platform_set_drvdata(pdev, ip); - ip->chip.dev = &pdev->dev; - ip->chip.ops = &iproc_pwm_ops; - ip->chip.npwm = 4; + chip->ops = &iproc_pwm_ops; ip->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(ip->base)) @@ -214,14 +213,14 @@ static int iproc_pwmc_probe(struct platform_device *pdev) /* Set full drive and normal polarity for all channels */ value = readl(ip->base + IPROC_PWM_CTRL_OFFSET); - for (i = 0; i < ip->chip.npwm; i++) { + for (i = 0; i < chip->npwm; i++) { value &= ~(1 << IPROC_PWM_CTRL_TYPE_SHIFT(i)); value |= 1 << IPROC_PWM_CTRL_POLARITY_SHIFT(i); } writel(value, ip->base + IPROC_PWM_CTRL_OFFSET); - ret = devm_pwmchip_add(&pdev->dev, &ip->chip); + ret = devm_pwmchip_add(&pdev->dev, chip); if (ret < 0) return dev_err_probe(&pdev->dev, ret, "failed to add PWM chip\n"); |