linux-kernel - [PATCH] ACPI: video: Use native backlight on Lenovo E41-25/45

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Message-Id: <20191216095512.1782-1-aaron.ma@canonical.com>
Date:   Mon, 16 Dec 2019 17:55:12 +0800
From:   Aaron Ma <aaron.ma@...onical.com>
To:     rjw@...ysocki.net, lenb@...nel.org, aaron.ma@...onical.com,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ACPI: video: Use native backlight on Lenovo E41-25/45

ACPI backlight control doesn't work on 2 Lenovo E41 laptops.
So force to use native backlight control on them.

Signed-off-by: Aaron Ma <aaron.ma@...onical.com>
---
 drivers/acpi/video_detect.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 31014c7d3793..13ce1bb9facf 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -302,6 +302,22 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "102434U"),
 		},
 	},
+	{
+	 .callback = video_detect_force_native,
+	 .ident = "Lenovo E41-25",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "81FS"),
+		},
+	},
+	{
+	 .callback = video_detect_force_native,
+	 .ident = "Lenovo E41-45",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+		DMI_MATCH(DMI_PRODUCT_NAME, "82BK"),
+		},
+	},
 	{
 	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */
 	 .callback = video_detect_force_native,
-- 
2.24.1