diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-14 10:31:03 +0100 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-15 12:59:20 +0100 |
| commit | 19c09ed0943b46006ff22283936ae2e4d827e237 (patch) | |
| tree | 03a1a4a2f3fdef8e39305a9d4aceded44d83b654 /drivers/pwm/pwm-bcm2835.c | |
| parent | pwm: atmel-tcb: Make use of devm_pwmchip_alloc() function (diff) | |
| download | linux-19c09ed0943b46006ff22283936ae2e4d827e237.tar.xz linux-19c09ed0943b46006ff22283936ae2e4d827e237.zip | |
pwm: bcm2835: Make use of devm_pwmchip_alloc() function
This prepares the pwm-bcm2835 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.
Link: https://lore.kernel.org/r/441489772bdfbb2cd206fd534b36c63e8c50843a.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'drivers/pwm/pwm-bcm2835.c')
| -rw-r--r-- | drivers/pwm/pwm-bcm2835.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/pwm/pwm-bcm2835.c b/drivers/pwm/pwm-bcm2835.c index 711c174bbe23..aa35acbb0cbc 100644 --- a/drivers/pwm/pwm-bcm2835.c +++ b/drivers/pwm/pwm-bcm2835.c @@ -24,7 +24,6 @@ #define PERIOD_MIN 0x2 struct bcm2835_pwm { - struct pwm_chip chip; void __iomem *base; struct clk *clk; unsigned long rate; @@ -32,7 +31,7 @@ struct bcm2835_pwm { static inline struct bcm2835_pwm *to_bcm2835_pwm(struct pwm_chip *chip) { - return container_of(chip, struct bcm2835_pwm, chip); + return pwmchip_get_drvdata(chip); } static int bcm2835_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm) @@ -134,12 +133,14 @@ static void devm_clk_rate_exclusive_put(void *data) static int bcm2835_pwm_probe(struct platform_device *pdev) { + struct pwm_chip *chip; struct bcm2835_pwm *pc; int ret; - pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL); - if (!pc) - return -ENOMEM; + chip = devm_pwmchip_alloc(&pdev->dev, 2, sizeof(*pc)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + pc = to_bcm2835_pwm(chip); pc->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pc->base)) @@ -165,14 +166,12 @@ static int bcm2835_pwm_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, -EINVAL, "failed to get clock rate\n"); - pc->chip.dev = &pdev->dev; - pc->chip.ops = &bcm2835_pwm_ops; - pc->chip.atomic = true; - pc->chip.npwm = 2; + chip->ops = &bcm2835_pwm_ops; + chip->atomic = true; platform_set_drvdata(pdev, pc); - ret = devm_pwmchip_add(&pdev->dev, &pc->chip); + ret = devm_pwmchip_add(&pdev->dev, chip); if (ret < 0) return dev_err_probe(&pdev->dev, ret, "failed to add pwmchip\n"); |