Commit ae8635e9 authored by Uwe Kleine-König's avatar Uwe Kleine-König
Browse files

pwm: vt8500: Make use of devm_pwmchip_alloc() function 

This prepares the pwm-vt8500 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.

Also convert the to_vt8500_chip() helper macro to a static inline to
get some type safety.

Link: https://lore.kernel.org/r/b203c4448db23ebad1165b7bce43ac41468c4e89.1707900770.git.u.kleine-koenig@pengutronix.de


Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
parent 68e34b3e

drivers/pwm/pwm-vt8500.c

+8 −8
Original line number Diff line number Diff line
@@ -45,12 +45,14 @@ 
#define STATUS_ALL_UPDATE	0x0F



struct vt8500_chip {

	struct pwm_chip chip;

	void __iomem *base;

	struct clk *clk;

};



#define to_vt8500_chip(chip)	container_of(chip, struct vt8500_chip, chip)

static inline struct vt8500_chip *to_vt8500_chip(struct pwm_chip *chip)

{

	return pwmchip_get_drvdata(chip);

}



#define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)

static inline void vt8500_pwm_busy_wait(struct pwm_chip *chip, int nr, u8 bitmask)
@@ -240,14 +242,12 @@ static int vt8500_pwm_probe(struct platform_device *pdev) 
	if (!np)

		return dev_err_probe(&pdev->dev, -EINVAL, "invalid devicetree node\n");



	vt8500 = devm_kzalloc(&pdev->dev, sizeof(*vt8500), GFP_KERNEL);

	if (vt8500 == NULL)

		return -ENOMEM;

	chip = devm_pwmchip_alloc(&pdev->dev, VT8500_NR_PWMS, sizeof(*vt8500));

	if (IS_ERR(chip))

		return PTR_ERR(chip);

	vt8500 = to_vt8500_chip(chip);



	chip = &vt8500->chip;

	chip->dev = &pdev->dev;

	chip->ops = &vt8500_pwm_ops;

	chip->npwm = VT8500_NR_PWMS;



	vt8500->clk = devm_clk_get_prepared(&pdev->dev, NULL);

	if (IS_ERR(vt8500->clk))