@@ -18,14 +18,13 @@
#include <linux/pwm.h>
struct stm32_pwm_lp {
- struct pwm_chip chip;
struct clk *clk;
struct regmap *regmap;
};
static inline struct stm32_pwm_lp *to_stm32_pwm_lp(struct pwm_chip *chip)
{
- return container_of(chip, struct stm32_pwm_lp, chip);
+ return pwmchip_get_drvdata(chip);
}
/* STM32 Low-Power Timer is preceded by a configurable power-of-2 prescaler */
@@ -196,20 +195,20 @@ static const struct pwm_ops stm32_pwm_lp_ops = {
static int stm32_pwm_lp_probe(struct platform_device *pdev)
{
struct stm32_lptimer *ddata = dev_get_drvdata(pdev->dev.parent);
+ struct pwm_chip *chip;
struct stm32_pwm_lp *priv;
int ret;
- 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 = to_stm32_pwm_lp(chip);
priv->regmap = ddata->regmap;
priv->clk = ddata->clk;
- priv->chip.dev = &pdev->dev;
- priv->chip.ops = &stm32_pwm_lp_ops;
- priv->chip.npwm = 1;
+ chip->ops = &stm32_pwm_lp_ops;
- ret = devm_pwmchip_add(&pdev->dev, &priv->chip);
+ ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0)
return ret;
@@ -220,13 +219,13 @@ static int stm32_pwm_lp_probe(struct platform_device *pdev)
static int stm32_pwm_lp_suspend(struct device *dev)
{
- struct stm32_pwm_lp *priv = dev_get_drvdata(dev);
+ struct pwm_chip *chip = dev_get_drvdata(dev);
struct pwm_state state;
- pwm_get_state(&priv->chip.pwms[0], &state);
+ pwm_get_state(&chip->pwms[0], &state);
if (state.enabled) {
dev_err(dev, "The consumer didn't stop us (%s)\n",
- priv->chip.pwms[0].label);
+ chip->pwms[0].label);
return -EBUSY;
}
This prepares the pwm-stm32-lp 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. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/pwm/pwm-stm32-lp.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-)