linux-kernel - [PATCH] ACPI: video: Add force_vendor quirk for Lenovo X1 Carbon.

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Date: Sat, 11 May 2024 12:56:34 +0800
From: dengxiang <dengxiang@...china.com>
To: lenb@...nel.org
Cc: rafael@...nel.org,
	linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	dengxiang <dengxiang@...china.com>
Subject: [PATCH]  ACPI: video: Add force_vendor quirk for Lenovo X1 Carbon.

 Lenovo X1 Carbon advertises both native 0 and native 1 backlight
 control interfaces.It will result that native zx_backlight
 interface does not work.

 Add a DMI quirk to force use of the vendor interface.

Signed-off-by: dengxiang <dengxiang@...china.com>
---
 drivers/acpi/video_detect.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 2cc3821b2b16..ed02b2d8b619 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -271,6 +271,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R600"),
 		},
 	},
+	{
+	 .callback = video_detect_force_vendor,
+	 .ident = "KaiTian X1 G1d",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "KaiTian"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "KaiTian X1 G1d"),
+		},
+	},
 
 	/*
 	 * Toshiba Portégé R100 has working both acpi_video and toshiba_acpi
-- 
2.30.2