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pwm: vt8500: Make use of devm_pwmchip_alloc() function

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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: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König 2024-02-14 10:33:15 +01:00
parent 68e34b3e66
commit ae8635e99c
1 changed files with 8 additions and 8 deletions
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16
drivers/pwm/pwm-vt8500.c
View file

@ -45,12 +45,14 @@
#define STATUS_ALL_UPDATE 0x0F #define STATUS_ALL_UPDATE 0x0F
struct vt8500_chip { struct vt8500_chip {
struct pwm_chip chip;
void __iomem *base; void __iomem *base;
struct clk *clk; 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) #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) 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) if (!np)
return dev_err_probe(&pdev->dev, -EINVAL, "invalid devicetree node\n"); return dev_err_probe(&pdev->dev, -EINVAL, "invalid devicetree node\n");
vt8500 = devm_kzalloc(&pdev->dev, sizeof(*vt8500), GFP_KERNEL); chip = devm_pwmchip_alloc(&pdev->dev, VT8500_NR_PWMS, sizeof(*vt8500));
if (vt8500 == NULL) if (IS_ERR(chip))
return -ENOMEM; return PTR_ERR(chip);
vt8500 = to_vt8500_chip(chip);
chip = &vt8500->chip;
chip->dev = &pdev->dev;
chip->ops = &vt8500_pwm_ops; chip->ops = &vt8500_pwm_ops;
chip->npwm = VT8500_NR_PWMS;
vt8500->clk = devm_clk_get_prepared(&pdev->dev, NULL); vt8500->clk = devm_clk_get_prepared(&pdev->dev, NULL);
if (IS_ERR(vt8500->clk)) if (IS_ERR(vt8500->clk))