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pwm: ab8500: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-ab8500 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/9c952baafe7e53c482adf23215138724b61e376b.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König 2024-02-14 10:30:53 +01:00
parent 96af28dc44
commit 6357c2cd05
1 changed files with 6 additions and 8 deletions
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14
drivers/pwm/pwm-ab8500.c
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@ -24,13 +24,12 @@
#define AB8500_PWM_CLKRATE 9600000
struct ab8500_pwm_chip {
struct pwm_chip chip;
unsigned int hwid;
};
static struct ab8500_pwm_chip *ab8500_pwm_from_chip(struct pwm_chip *chip)
{
return container_of(chip, struct ab8500_pwm_chip, chip);
return pwmchip_get_drvdata(chip);
}
static int ab8500_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
@ -196,14 +195,13 @@ static int ab8500_pwm_probe(struct platform_device *pdev)
* Nothing to be done in probe, this is required to get the
* device which is required for ab8500 read and write
*/
ab8500 = devm_kzalloc(&pdev->dev, sizeof(*ab8500), GFP_KERNEL);
if (ab8500 == NULL)
return -ENOMEM;
chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*ab8500));
if (IS_ERR(chip))
return PTR_ERR(chip);
ab8500 = ab8500_pwm_from_chip(chip);
chip = &ab8500->chip;
chip->dev = &pdev->dev;
chip->ops = &ab8500_pwm_ops;
chip->npwm = 1;
ab8500->hwid = pdev->id - 1;
err = devm_pwmchip_add(&pdev->dev, chip);