Messages in this thread | | | Date | Wed, 8 Jun 2022 15:36:43 +0100 | From | Daniel Thompson <> | Subject | Re: [PATCH 4/4] backlight: tosa: Use backlight helper |
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On Tue, Jun 07, 2022 at 09:09:25PM +0200, Stephen Kitt wrote: > Instead of retrieving the backlight brightness in struct > backlight_properties manually, and then checking whether the backlight > should be on at all, use backlight_get_brightness() which does all > this and insulates this from future changes. > > Signed-off-by: Stephen Kitt <steve@sk2.org> > Cc: Lee Jones <lee.jones@linaro.org> > Cc: Daniel Thompson <daniel.thompson@linaro.org> > Cc: Jingoo Han <jingoohan1@gmail.com> > Cc: Helge Deller <deller@gmx.de> > Cc: dri-devel@lists.freedesktop.org > Cc: linux-fbdev@vger.kernel.org
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
... and, wowzer, the code before your change wasn't much fun to read!
> static int tosa_bl_update_status(struct backlight_device *dev) > { > - struct backlight_properties *props = &dev->props; > struct tosa_bl_data *data = bl_get_data(dev); > - int power = max(props->power, props->fb_blank); > - int brightness = props->brightness; > - > - if (power) > - brightness = 0; > + int brightness = backlight_get_brightness(dev); > > tosa_bl_set_backlight(data, brightness);
Daniel.
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