From: Takashi Iwai <tiwai@xxxxxxx>
commit 35243fc777566ccb3370e175cf591fea0f81f68c upstream.
Macbook 5,1 with MCP79 lost its backlight control since the recent
change for supporting GSP-RM; it rewrote the whole nv50 backlight
control code and each display engine is supposed to have an entry for
IOR bl callback, but it didn't cover mcp77.
This patch adds the missing bl entry initialization for mcp77 display
engine to recover the backlight control.
Fixes: 2274ce7e3681 ("drm/nouveau/disp: add output backlight control methods")
Cc: stable@xxxxxxxxxxxxxxx
Link: https://bugzilla.suse.com/show_bug.cgi?id=1223838
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Danilo Krummrich <dakr@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20250102114944.11499-1-tiwai@xxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nvkm/engine/disp/mcp77.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/mcp77.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/mcp77.c
@@ -31,6 +31,7 @@ mcp77_sor = {
.state = g94_sor_state,
.power = nv50_sor_power,
.clock = nv50_sor_clock,
+ .bl = &nv50_sor_bl,
.hdmi = &g84_sor_hdmi,
.dp = &g94_sor_dp,
};
Patches currently in stable-queue which might be from tiwai@xxxxxxx are
queue-6.12/drm-nouveau-disp-fix-missing-backlight-control-on-macbook-5-1.patch
queue-6.12/alsa-hda-realtek-add-support-for-ayaneo-system-using-cs35l41-hda.patch
queue-6.12/alsa-hda-realtek-fixup-asus-ga605w.patch
queue-6.12/alsa-hda-realtek-fixup-asus-h7606w.patch
