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pwm: intel-lgm: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-intel-lgm 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/3b2be81b046fe2213736ad37153131d5f4c859f5.1707900770.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 10:31:38 +01:00
parent abf6569d64
commit a1d81abc03
1 changed files with 8 additions and 9 deletions

17
drivers/pwm/pwm-intel-lgm.c

@ -42,14 +42,13 @@
#define LGM_PWM_PERIOD_2WIRE_NS (40 * NSEC_PER_MSEC)
struct lgm_pwm_chip {
struct pwm_chip chip;
struct regmap *regmap;
u32 period;
};
static inline struct lgm_pwm_chip *to_lgm_pwm_chip(struct pwm_chip *chip)
{
return container_of(chip, struct lgm_pwm_chip, chip);
return pwmchip_get_drvdata(chip);
}
static int lgm_pwm_enable(struct pwm_chip *chip, bool enable)
@ -168,14 +167,16 @@ static int lgm_pwm_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct reset_control *rst;
struct pwm_chip *chip;
struct lgm_pwm_chip *pc;
void __iomem *io_base;
struct clk *clk;
int ret;
pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL);
if (!pc)
return -ENOMEM;
chip = devm_pwmchip_alloc(dev, 1, sizeof(*pc));
if (IS_ERR(chip))
return PTR_ERR(chip);
pc = to_lgm_pwm_chip(chip);
io_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(io_base))
@ -203,13 +204,11 @@ static int lgm_pwm_probe(struct platform_device *pdev)
if (ret)
return dev_err_probe(dev, ret, "cannot deassert reset control\n");
pc->chip.dev = dev;
pc->chip.ops = &lgm_pwm_ops;
pc->chip.npwm = 1;
chip->ops = &lgm_pwm_ops;
lgm_pwm_init(pc);
ret = devm_pwmchip_add(dev, &pc->chip);
ret = devm_pwmchip_add(dev, chip);
if (ret < 0)
return dev_err_probe(dev, ret, "failed to add PWM chip\n");