| Message ID | 20240818-amdgpu-min-backlight-quirk-v5-3-b6c0ead0c73d@weissschuh.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm: Minimum backlight overrides and implementation for amdgpu | expand |
On 8/18/2024 01:56, Thomas Weißschuh wrote: > The value of "min_input_signal" returned from ATIF on a Framework AMD 13 > is "12". This leads to a fairly bright minimum display backlight. > > Add a quirk to override that the minimum backlight PWM to "0" which > leads to a much lower minimum brightness, which is still visible. > > Tested on a Framework AMD 13 BIOS 3.05 with the matte panel. > > Link: https://community.frame.work/t/25711/9 > Link: https://community.frame.work/t/47036 > Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> > Tested-by: Dustin L. Howett <dustin@howett.net> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> > --- > drivers/gpu/drm/drm_panel_backlight_quirks.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/gpu/drm/drm_panel_backlight_quirks.c b/drivers/gpu/drm/drm_panel_backlight_quirks.c > index 6b8bbed77c7f..f2aefff618dd 100644 > --- a/drivers/gpu/drm/drm_panel_backlight_quirks.c > +++ b/drivers/gpu/drm/drm_panel_backlight_quirks.c > @@ -17,6 +17,14 @@ struct drm_panel_min_backlight_quirk { > }; > > static const struct drm_panel_min_backlight_quirk drm_panel_min_backlight_quirks[] = { > + /* 13 inch matte panel */ > + { > + .dmi_match.field = DMI_BOARD_VENDOR, > + .dmi_match.value = "Framework", > + .ident.panel_id = drm_edid_encode_panel_id('B', 'O', 'E', 0x0bca), > + .ident.name = "NE135FBM-N41", > + .min_brightness = 0, > + }, > }; > > static bool drm_panel_min_backlight_quirk_matches(const struct drm_panel_min_backlight_quirk *quirk, >
diff --git a/drivers/gpu/drm/drm_panel_backlight_quirks.c b/drivers/gpu/drm/drm_panel_backlight_quirks.c index 6b8bbed77c7f..f2aefff618dd 100644 --- a/drivers/gpu/drm/drm_panel_backlight_quirks.c +++ b/drivers/gpu/drm/drm_panel_backlight_quirks.c @@ -17,6 +17,14 @@ struct drm_panel_min_backlight_quirk { }; static const struct drm_panel_min_backlight_quirk drm_panel_min_backlight_quirks[] = { + /* 13 inch matte panel */ + { + .dmi_match.field = DMI_BOARD_VENDOR, + .dmi_match.value = "Framework", + .ident.panel_id = drm_edid_encode_panel_id('B', 'O', 'E', 0x0bca), + .ident.name = "NE135FBM-N41", + .min_brightness = 0, + }, }; static bool drm_panel_min_backlight_quirk_matches(const struct drm_panel_min_backlight_quirk *quirk,