[PATCH v6 3/4] drm: panel-backlight-quirks: Add Framework 13 matte panel
Thomas Weißschuh
linux at weissschuh.net
Sat Aug 24 18:33:56 UTC 2024
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 at weissschuh.net>
Tested-by: Dustin L. Howett <dustin at howett.net>
Reviewed-by: Mario Limonciello <mario.limonciello at 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,
--
2.46.0
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