@@ -304,12 +304,14 @@ static int pwm_backlight_probe(struct platform_device *pdev)
/*
* The DT case will set the pwm_period_ns field to 0 and store the
* period, parsed from the DT, in the PWM device. For the non-DT case,
- * set the period from platform data.
+ * set the period from platform data if it is not already set.
*/
- if (data->pwm_period_ns > 0)
+ pb->period = pwm_get_period(pb->pwm);
+ if (!pb->period && (data->pwm_period_ns > 0)) {
+ pb->period = data->pwm_period_ns;
pwm_set_period(pb->pwm, data->pwm_period_ns);
+ }
- pb->period = pwm_get_period(pb->pwm);
pb->lth_brightness = data->lth_brightness * (pb->period / pb->scale);
memset(&props, 0, sizeof(struct backlight_properties));
The PWM core is now able to initialize the PWM period from platform_data. Use it and if it is not configured, use the supplied pwm_period_ns. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> --- drivers/video/backlight/pwm_bl.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)