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path: root/drivers/pwm/pwm-raspberrypi-poe.c
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Diffstat (limited to 'drivers/pwm/pwm-raspberrypi-poe.c')
-rw-r--r--drivers/pwm/pwm-raspberrypi-poe.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/pwm/pwm-raspberrypi-poe.c b/drivers/pwm/pwm-raspberrypi-poe.c
index 1ad814fdec..8921e7ea2c 100644
--- a/drivers/pwm/pwm-raspberrypi-poe.c
+++ b/drivers/pwm/pwm-raspberrypi-poe.c
@@ -27,7 +27,6 @@
struct raspberrypi_pwm {
struct rpi_firmware *firmware;
- struct pwm_chip chip;
unsigned int duty_cycle;
};
@@ -40,7 +39,7 @@ struct raspberrypi_pwm_prop {
static inline
struct raspberrypi_pwm *raspberrypi_pwm_from_chip(struct pwm_chip *chip)
{
- return container_of(chip, struct raspberrypi_pwm, chip);
+ return pwmchip_get_drvdata(chip);
}
static int raspberrypi_pwm_set_property(struct rpi_firmware *firmware,
@@ -122,7 +121,7 @@ static int raspberrypi_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
ret = raspberrypi_pwm_set_property(rpipwm->firmware, RPI_PWM_CUR_DUTY_REG,
duty_cycle);
if (ret) {
- dev_err(chip->dev, "Failed to set duty cycle: %pe\n",
+ dev_err(pwmchip_parent(chip), "Failed to set duty cycle: %pe\n",
ERR_PTR(ret));
return ret;
}
@@ -142,6 +141,7 @@ static int raspberrypi_pwm_probe(struct platform_device *pdev)
struct device_node *firmware_node;
struct device *dev = &pdev->dev;
struct rpi_firmware *firmware;
+ struct pwm_chip *chip;
struct raspberrypi_pwm *rpipwm;
int ret;
@@ -157,14 +157,14 @@ static int raspberrypi_pwm_probe(struct platform_device *pdev)
return dev_err_probe(dev, -EPROBE_DEFER,
"Failed to get firmware handle\n");
- rpipwm = devm_kzalloc(&pdev->dev, sizeof(*rpipwm), GFP_KERNEL);
- if (!rpipwm)
- return -ENOMEM;
+ chip = devm_pwmchip_alloc(&pdev->dev, RASPBERRYPI_FIRMWARE_PWM_NUM,
+ sizeof(*rpipwm));
+ if (IS_ERR(chip))
+ return PTR_ERR(chip);
+ rpipwm = raspberrypi_pwm_from_chip(chip);
rpipwm->firmware = firmware;
- rpipwm->chip.dev = dev;
- rpipwm->chip.ops = &raspberrypi_pwm_ops;
- rpipwm->chip.npwm = RASPBERRYPI_FIRMWARE_PWM_NUM;
+ chip->ops = &raspberrypi_pwm_ops;
ret = raspberrypi_pwm_get_property(rpipwm->firmware, RPI_PWM_CUR_DUTY_REG,
&rpipwm->duty_cycle);
@@ -173,7 +173,7 @@ static int raspberrypi_pwm_probe(struct platform_device *pdev)
return ret;
}
- return devm_pwmchip_add(dev, &rpipwm->chip);
+ return devm_pwmchip_add(dev, chip);
}
static const struct of_device_id raspberrypi_pwm_of_match[] = {