diff mbox series

[v5,101/111] pwm: vt8500: Make use of devm_pwmchip_alloc() function

Message ID 01b4c6f966cd9506c7a0771a442d13199c4b92fd.1706182805.git.u.kleine-koenig@pengutronix.de (mailing list archive)
State New, archived
Headers show
Series None | expand

Commit Message

Uwe Kleine-König Jan. 25, 2024, 12:10 p.m. UTC
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.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/pwm/pwm-vt8500.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/drivers/pwm/pwm-vt8500.c b/drivers/pwm/pwm-vt8500.c
index def48dbef808..ea465376fe09 100644
--- a/drivers/pwm/pwm-vt8500.c
+++ b/drivers/pwm/pwm-vt8500.c
@@ -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)
@@ -232,6 +234,7 @@  MODULE_DEVICE_TABLE(of, vt8500_pwm_dt_ids);
 
 static int vt8500_pwm_probe(struct platform_device *pdev)
 {
+	struct pwm_chip *chip;
 	struct vt8500_chip *vt8500;
 	struct device_node *np = pdev->dev.of_node;
 	int ret;
@@ -239,13 +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)
+	chip = devm_pwmchip_alloc(&pdev->dev, VT8500_NR_PWMS, sizeof(*vt8500));
+	if (chip == NULL)
 		return -ENOMEM;
+	vt8500 = to_vt8500_chip(chip);
 
-	vt8500->chip.dev = &pdev->dev;
-	vt8500->chip.ops = &vt8500_pwm_ops;
-	vt8500->chip.npwm = VT8500_NR_PWMS;
+	chip->ops = &vt8500_pwm_ops;
 
 	vt8500->clk = devm_clk_get_prepared(&pdev->dev, NULL);
 	if (IS_ERR(vt8500->clk))
@@ -255,7 +257,7 @@  static int vt8500_pwm_probe(struct platform_device *pdev)
 	if (IS_ERR(vt8500->base))
 		return PTR_ERR(vt8500->base);
 
-	ret = devm_pwmchip_add(&pdev->dev, &vt8500->chip);
+	ret = devm_pwmchip_add(&pdev->dev, chip);
 	if (ret < 0)
 		return dev_err_probe(&pdev->dev, ret, "failed to add PWM chip\n");