drm/nouveau/disp: Fix missing backlight control on Macbook 5,1

BugLink: https://bugs.launchpad.net/bugs/2107449

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: 2274ce7e36 ("drm/nouveau/disp: add output backlight control methods")
Cc: stable@vger.kernel.org
Link: https://bugzilla.suse.com/show_bug.cgi?id=1223838
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20250102114944.11499-1-tiwai@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

This commit is contained in:

Takashi Iwai

2025-01-02 12:49:36 +01:00

committed by

Stefan Bader

parent d52016795c

commit 8ad6d7af58

1 changed files with 1 additions and 0 deletions

									
										drivers/gpu/drm/nouveau/nvkm/engine/disp/mcp77.c
									
		+1
		
												View File
												
				@@ -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,

				};