Commit 89e26895 authored by Hans de Goede's avatar Hans de Goede Committed by Wen Zhiwei
Browse files

ACPI: video: Add force_vendor quirk for Panasonic Toughbook CF-18 

stable inclusion
from stable-v6.6.55
commit 716dae9686fe043c1c4c634a425fa0abe1a77dca
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IB0MX4

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=716dae9686fe043c1c4c634a425fa0abe1a77dca



--------------------------------

[ Upstream commit eb7b0f12e13ba99e64e3a690c2166895ed63b437 ]

The Panasonic Toughbook CF-18 advertises both native and vendor backlight
control interfaces. But only the vendor one actually works.

acpi_video_get_backlight_type() will pick the non working native backlight
by default, add a quirk to select the working vendor backlight instead.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Link: https://patch.msgid.link/20240907124419.21195-1-hdegoede@redhat.com


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
Signed-off-by: default avatarWen Zhiwei <wenzhiwei@kylinos.cn>
parent 6f3adbfc

drivers/acpi/video_detect.c

+8 −0
Original line number Diff line number Diff line
@@ -260,6 +260,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { 
		DMI_MATCH(DMI_PRODUCT_NAME, "PCG-FRV35"),

		},

	},

	{

	 .callback = video_detect_force_vendor,

	 /* Panasonic Toughbook CF-18 */

	 .matches = {

		DMI_MATCH(DMI_SYS_VENDOR, "Matsushita Electric Industrial"),

		DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),

		},

	},



	/*

	 * Toshiba models with Transflective display, these need to use