lkml.org 
[lkml]   [2022]   [Nov]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH AUTOSEL 6.0 18/44] ACPI: video: Add backlight=native DMI quirk for Dell G15 5515
Date
From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit f46acc1efd4b5846de9fa05f966e504f328f34a6 ]

The Dell G15 5515 has the WMI interface (and WMI call returns) expected
by the nvidia-wmi-ec-backlight interface. But the backlight class device
registered by the nvidia-wmi-ec-backlight driver does not actually work.

The amdgpu_bl0 native GPU backlight class device does actually work,
add a backlight=native DMI quirk for this.

Reported-by: Iris <pawel.js@protonmail.com>
Reviewed-by: Daniel Dadap <ddadap@nvidia.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
- Add a comment that this needs to be revisited when dynamic-mux
support gets added (suggested by: Daniel Dadap)
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/acpi/video_detect.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 68a566f69684..aae9261c424a 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -578,6 +578,20 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_BOARD_NAME, "GMxRGxx"),
},
},
+ /*
+ * Models which have nvidia-ec-wmi support, but should not use it.
+ * Note this indicates a likely firmware bug on these models and should
+ * be revisited if/when Linux gets support for dynamic mux mode.
+ */
+ {
+ .callback = video_detect_force_native,
+ /* Dell G15 5515 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"),
+ },
+ },
+
/*
* Desktops which falsely report a backlight and which our heuristics
* for this do not catch.
--
2.35.1
\
 
 \ /
  Last update: 2022-11-19 03:15    [W:0.229 / U:0.160 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site