From: Hans de Goede Date: Mon, 31 Oct 2022 20:20:59 +0000 (+0100) Subject: ACPI: video: Add backlight=native DMI quirk for Dell G15 5515 X-Git-Tag: v6.1~17^2~19 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f46acc1efd4b5846de9fa05f966e504f328f34a6;p=platform%2Fkernel%2Flinux-starfive.git 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 Reviewed-by: Daniel Dadap Signed-off-by: Hans de Goede --- Changes in v2: - Add a comment that this needs to be revisited when dynamic-mux support gets added (suggested by: Daniel Dadap) --- diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index c02e960..b2a6162 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. */