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authorHans de Goede <hdegoede@redhat.com>2022-10-31 21:20:59 +0100
committerHans de Goede <hdegoede@redhat.com>2022-11-07 12:33:28 +0100
commitf46acc1efd4b5846de9fa05f966e504f328f34a6 (patch)
tree122ca8c8f9d0971008a994d4d77ed87100f685f1 /drivers/acpi/video_detect.c
parentACPI: video: Make acpi_video_backlight_use_native() always return true (diff)
downloadlinux-f46acc1efd4b5846de9fa05f966e504f328f34a6.tar.xz
linux-f46acc1efd4b5846de9fa05f966e504f328f34a6.zip
ACPI: video: Add backlight=native DMI quirk for Dell G15 5515
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)
Diffstat (limited to '')
-rw-r--r--drivers/acpi/video_detect.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index c02e960cdbe3..b2a616287638 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -646,6 +646,20 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
},
/*
+ * 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.
*/