From: dengxiang <dengxiang@nfschina.com>
To: lenb@kernel.org, rafael@kernel.org, linux-acpi@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org,
platform-driver-x86@vger.kernel.org, wanghuiqiang@huawei.com,
prime.zeng@hisilicon.com, tony.luck@intel.com
Cc: dengxiang <dengxiang@nfschina.com>
Subject: [PATCH] ACPI: video: Use vendor backlight on Lenovo X1 Carbon.
Date: Mon, 13 May 2024 11:38:34 +0800 [thread overview]
Message-ID: <20240513033834.9174-1-dengxiang@nfschina.com> (raw)
Lenovo X1 Carbon advertises both native and vendor backlight
control interfaces.But Linux defaults to picking the native ACPI
video backlight interface, which will make that the vendor
zx_backlight interface to not work.
Add a DMI quirk to force use of the vendor interface.
Signed-off-by: dengxiang <dengxiang@nfschina.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..e647186b4e83 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -875,6 +875,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
},
},
+ {
+ .callback = video_detect_force_vendor,
+ /* Lenovo X1 Carbon */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "KaiTian"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "KaiTian X1 G1d"),
+ },
+ },
{ },
};
--
2.30.2
next reply other threads:[~2024-05-13 3:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-13 3:38 dengxiang [this message]
2024-05-13 8:39 ` [PATCH] ACPI: video: Use vendor backlight on Lenovo X1 Carbon Hans de Goede
2024-05-15 3:45 ` dengxiang
2024-05-15 17:29 ` Hans de Goede
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