[PATCH 1/3] drm/panel: Use backlight helper

From: Stephen Kitt
Date: Tue Jun 07 2022 - 18:27:32 EST


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@xxxxxxx>
Cc: Thierry Reding <thierry.reding@xxxxxxxxx>
Cc: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: Daniel Vetter <daniel@xxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
---
drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c b/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c
index 44674ebedf59..174ff434bd71 100644
--- a/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c
+++ b/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c
@@ -215,14 +215,9 @@ static const struct drm_panel_funcs tm5p5_nt35596_panel_funcs = {
static int tm5p5_nt35596_bl_update_status(struct backlight_device *bl)
{
struct mipi_dsi_device *dsi = bl_get_data(bl);
- u16 brightness = bl->props.brightness;
+ u16 brightness = backlight_get_brightness(bl);
int ret;

- if (bl->props.power != FB_BLANK_UNBLANK ||
- bl->props.fb_blank != FB_BLANK_UNBLANK ||
- bl->props.state & (BL_CORE_SUSPENDED | BL_CORE_FBBLANK))
- brightness = 0;
-
dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;

ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
--
2.30.2