This prepares the driver for further changes that will make it harder to
determine the pwm_chip from a given jz4740_pwm_chip. To just not have to
do that, rework jz4740_pwm_can_use_chn() to take a pwm_chip.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
---
drivers/pwm/pwm-jz4740.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/pwm/pwm-jz4740.c b/drivers/pwm/pwm-jz4740.c
index 3933418e551b..de9e66065e48 100644
--- a/drivers/pwm/pwm-jz4740.c
+++ b/drivers/pwm/pwm-jz4740.c
@@ -35,13 +35,12 @@ static inline struct jz4740_pwm_chip *to_jz4740(struct pwm_chip *chip)
return container_of(chip, struct jz4740_pwm_chip, chip);
}
-static bool jz4740_pwm_can_use_chn(struct jz4740_pwm_chip *jz,
- unsigned int channel)
+static bool jz4740_pwm_can_use_chn(struct pwm_chip *chip, unsigned int channel)
{
/* Enable all TCU channels for PWM use by default except channels 0/1 */
- u32 pwm_channels_mask = GENMASK(jz->chip.npwm - 1, 2);
+ u32 pwm_channels_mask = GENMASK(chip->npwm - 1, 2);
- device_property_read_u32(jz->chip.dev->parent,
+ device_property_read_u32(chip->dev->parent,
"ingenic,pwm-channels-mask",
&pwm_channels_mask);
@@ -55,7 +54,7 @@ static int jz4740_pwm_request(struct pwm_chip *chip, struct pwm_device *pwm)
char name[16];
int err;
- if (!jz4740_pwm_can_use_chn(jz, pwm->hwpwm))
+ if (!jz4740_pwm_can_use_chn(chip, pwm->hwpwm))
return -EBUSY;
snprintf(name, sizeof(name), "timer%u", pwm->hwpwm);
--
2.43.0
