[PATCH v3 3/5] pwm-backlight: add support for PWM delays proprieties.
Pavel Machek
pavel at ucw.cz
Thu Jul 20 01:06:56 PDT 2017
Hi!
> >--- a/drivers/video/backlight/pwm_bl.c
> >+++ b/drivers/video/backlight/pwm_bl.c
> >@@ -10,6 +10,7 @@
> > * published by the Free Software Foundation.
> > */
> >+#include <linux/delay.h>
> > #include <linux/gpio/consumer.h>
> > #include <linux/gpio.h>
> > #include <linux/module.h>
> >@@ -35,6 +36,7 @@ struct pwm_bl_data {
> > struct gpio_desc *enable_gpio;
> > unsigned int scale;
> > bool legacy;
> >+ unsigned int pwm_delay[2];
>
> Two named members would be better here (eliminating the "magic" 0
>and 1).
My thought, too.
> >@@ -56,6 +58,9 @@ static void pwm_backlight_power_on(struct pwm_bl_data *pb, int brightness)
> > pwm_enable(pb->pwm);
> >+ if (pb->pwm_delay[0])
> >+ usleep_range(pb->pwm_delay[0], pb->pwm_delay[0] * 2);
Plus I'd just do the delay unconditionally :-).
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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