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pwm: bcm-iproc: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-bcm-iproc 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/cdc6136b94f685c85a615e9e5ccbd7ebb2f91cfc.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 10:31:04 +01:00
parent 19c09ed094
commit d502386c2b
1 changed files with 9 additions and 10 deletions
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19
drivers/pwm/pwm-bcm-iproc.c
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@ -34,14 +34,13 @@
#define IPROC_PWM_PRESCALE_MAX 0x3f
struct iproc_pwmc {
struct pwm_chip chip;
void __iomem *base;
struct clk *clk;
};
static inline struct iproc_pwmc *to_iproc_pwmc(struct pwm_chip *chip)
{
return container_of(chip, struct iproc_pwmc, chip);
return pwmchip_get_drvdata(chip);
}
static void iproc_pwmc_enable(struct iproc_pwmc *ip, unsigned int channel)
@ -187,20 +186,20 @@ static const struct pwm_ops iproc_pwm_ops = {
static int iproc_pwmc_probe(struct platform_device *pdev)
{
struct pwm_chip *chip;
struct iproc_pwmc *ip;
unsigned int i;
u32 value;
int ret;
ip = devm_kzalloc(&pdev->dev, sizeof(*ip), GFP_KERNEL);
if (!ip)
return -ENOMEM;
chip = devm_pwmchip_alloc(&pdev->dev, 4, sizeof(*ip));
if (IS_ERR(chip))
return PTR_ERR(chip);
ip = to_iproc_pwmc(chip);
platform_set_drvdata(pdev, ip);
ip->chip.dev = &pdev->dev;
ip->chip.ops = &iproc_pwm_ops;
ip->chip.npwm = 4;
chip->ops = &iproc_pwm_ops;
ip->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(ip->base))
@ -214,14 +213,14 @@ static int iproc_pwmc_probe(struct platform_device *pdev)
/* Set full drive and normal polarity for all channels */
value = readl(ip->base + IPROC_PWM_CTRL_OFFSET);
for (i = 0; i < ip->chip.npwm; i++) {
for (i = 0; i < chip->npwm; i++) {
value &= ~(1 << IPROC_PWM_CTRL_TYPE_SHIFT(i));
value |= 1 << IPROC_PWM_CTRL_POLARITY_SHIFT(i);
}
writel(value, ip->base + IPROC_PWM_CTRL_OFFSET);
ret = devm_pwmchip_add(&pdev->dev, &ip->chip);
ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0)
return dev_err_probe(&pdev->dev, ret,
"failed to add PWM chip\n");