diff options
Diffstat (limited to 'drivers/pwm/pwm-sl28cpld.c')
| -rw-r--r-- | drivers/pwm/pwm-sl28cpld.c | 30 |
1 files changed, 16 insertions, 14 deletions
diff --git a/drivers/pwm/pwm-sl28cpld.c b/drivers/pwm/pwm-sl28cpld.c index 589aeaaa6ac8..934378d6a002 100644 --- a/drivers/pwm/pwm-sl28cpld.c +++ b/drivers/pwm/pwm-sl28cpld.c @@ -38,6 +38,7 @@ #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/pwm.h> #include <linux/regmap.h> @@ -80,16 +81,18 @@ regmap_write((priv)->regmap, (priv)->offset + (reg), (val)) struct sl28cpld_pwm { - struct pwm_chip pwm_chip; struct regmap *regmap; u32 offset; }; -#define sl28cpld_pwm_from_chip(_chip) \ - container_of(_chip, struct sl28cpld_pwm, pwm_chip) -static void sl28cpld_pwm_get_state(struct pwm_chip *chip, - struct pwm_device *pwm, - struct pwm_state *state) +static inline struct sl28cpld_pwm *sl28cpld_pwm_from_chip(struct pwm_chip *chip) +{ + return pwmchip_get_drvdata(chip); +} + +static int sl28cpld_pwm_get_state(struct pwm_chip *chip, + struct pwm_device *pwm, + struct pwm_state *state) { struct sl28cpld_pwm *priv = sl28cpld_pwm_from_chip(chip); unsigned int reg; @@ -115,6 +118,8 @@ static void sl28cpld_pwm_get_state(struct pwm_chip *chip, * the PWM core. */ state->duty_cycle = min(state->duty_cycle, state->period); + + return 0; } static int sl28cpld_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, @@ -194,7 +199,6 @@ static int sl28cpld_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm, static const struct pwm_ops sl28cpld_pwm_ops = { .apply = sl28cpld_pwm_apply, .get_state = sl28cpld_pwm_get_state, - .owner = THIS_MODULE, }; static int sl28cpld_pwm_probe(struct platform_device *pdev) @@ -208,9 +212,10 @@ static int sl28cpld_pwm_probe(struct platform_device *pdev) return -ENODEV; } - priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; + chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*priv)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + priv = sl28cpld_pwm_from_chip(chip); priv->regmap = dev_get_regmap(pdev->dev.parent, NULL); if (!priv->regmap) { @@ -226,12 +231,9 @@ static int sl28cpld_pwm_probe(struct platform_device *pdev) } /* Initialize the pwm_chip structure */ - chip = &priv->pwm_chip; - chip->dev = &pdev->dev; chip->ops = &sl28cpld_pwm_ops; - chip->npwm = 1; - ret = devm_pwmchip_add(&pdev->dev, &priv->pwm_chip); + ret = devm_pwmchip_add(&pdev->dev, chip); if (ret) { dev_err(&pdev->dev, "failed to add PWM chip (%pe)", ERR_PTR(ret)); |