@@ -53,13 +53,11 @@
/**
* struct pwm_omap_dmtimer_chip - Structure representing a pwm chip
* corresponding to omap dmtimer.
- * @chip: PWM chip structure representing PWM controller
* @dm_timer: Pointer to omap dm timer.
* @pdata: Pointer to omap dm timer ops.
* @dm_timer_pdev: Pointer to omap dm timer platform device
*/
struct pwm_omap_dmtimer_chip {
- struct pwm_chip chip;
/* Mutex to protect pwm apply state */
struct omap_dm_timer *dm_timer;
const struct omap_dm_timer_ops *pdata;
@@ -69,7 +67,7 @@ struct pwm_omap_dmtimer_chip {
static inline struct pwm_omap_dmtimer_chip *
to_pwm_omap_dmtimer_chip(struct pwm_chip *chip)
{
- return container_of(chip, struct pwm_omap_dmtimer_chip, chip);
+ return pwmchip_get_drvdata(chip);
}
/**
@@ -311,6 +309,7 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
struct dmtimer_platform_data *timer_pdata;
const struct omap_dm_timer_ops *pdata;
struct platform_device *timer_pdev;
+ struct pwm_chip *chip;
struct pwm_omap_dmtimer_chip *omap;
struct omap_dm_timer *dm_timer;
struct device_node *timer;
@@ -368,11 +367,12 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
goto err_request_timer;
}
- omap = devm_kzalloc(&pdev->dev, sizeof(*omap), GFP_KERNEL);
- if (!omap) {
+ chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*omap));
+ if (!chip) {
ret = -ENOMEM;
goto err_alloc_omap;
}
+ omap = to_pwm_omap_dmtimer_chip(chip);
omap->pdata = pdata;
omap->dm_timer = dm_timer;
@@ -392,11 +392,9 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
if (!of_property_read_u32(pdev->dev.of_node, "ti,clock-source", &v))
omap->pdata->set_source(omap->dm_timer, v);
- omap->chip.dev = &pdev->dev;
- omap->chip.ops = &pwm_omap_dmtimer_ops;
- omap->chip.npwm = 1;
+ chip->ops = &pwm_omap_dmtimer_ops;
- ret = pwmchip_add(&omap->chip);
+ ret = pwmchip_add(chip);
if (ret < 0) {
dev_err(&pdev->dev, "failed to register PWM\n");
goto err_pwmchip_add;
@@ -404,14 +402,14 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
of_node_put(timer);
- platform_set_drvdata(pdev, omap);
+ platform_set_drvdata(pdev, chip);
return 0;
err_pwmchip_add:
/*
- * *omap is allocated using devm_kzalloc,
+ * *omap is allocated using devm_pwmchip_alloc,
* so no free necessary here
*/
err_alloc_omap:
@@ -432,9 +430,10 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
static void pwm_omap_dmtimer_remove(struct platform_device *pdev)
{
- struct pwm_omap_dmtimer_chip *omap = platform_get_drvdata(pdev);
+ struct pwm_chip *chip = platform_get_drvdata(pdev);
+ struct pwm_omap_dmtimer_chip *omap = to_pwm_omap_dmtimer_chip(chip);
- pwmchip_remove(&omap->chip);
+ pwmchip_remove(chip);
if (pm_runtime_active(&omap->dm_timer_pdev->dev))
omap->pdata->stop(omap->dm_timer);
This prepares the pwm-omap-dmtimer 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-omap-dmtimer.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-)