ACK for 6.0; this patch is appropriate for any branch which has the nvidia-wmi-ec-backlight driver.
On Fri, Nov 18, 2022 at 09:10:58PM -0500, Sasha Levin wrote:
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