From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2E6B86FC5; Tue, 12 May 2026 18:03:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778609005; cv=none; b=l3ZEYfqtxLwtnKiWhLVk6s9dDZu20rDvCnml87i7z0yqvQ8pVN/ryAxF+Ok2gv3NUhQSCiPB84DECYvvUbzvCvuwtEfolxqoIbtkVqnjXUulpmQzMAj6CF1KBSrWo2Mq9o8S9ph/qn5vs6Py2Ky6PUtyO84Qia1vAixt0engOgQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778609005; c=relaxed/simple; bh=DHHD97u+kHp5vCOyCJ0FZ+u+d+0CDOxuftdPATwCya0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=aHuavcjtMVLfLpwB4OGms1hM2WtPeYYbU7cDH8LQHq10Vn41bK/+luFb7rscXU9uc745veHVjjIoBCjat8ygVQQbWRoHTsD5VdEfSb0oywCD0urmto3fILuLvrkOLJPxGF6EVgFVHU5I3inq+hyHsRWsK6rTEFKKB/BKEcrEdXw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bcxC0veh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="bcxC0veh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8783C2BCB0; Tue, 12 May 2026 18:03:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778609005; bh=DHHD97u+kHp5vCOyCJ0FZ+u+d+0CDOxuftdPATwCya0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bcxC0vehjDLM7Jvhfn4Fpsvt03vdBcDtwsN7wRhE3vF2bV6/0qcL/QyyK3bNKsDpD m4+jsKhr5oxSzsjMusuggzYQTJkku5wfLyz5/Q2AhJWZUq/6KuXKCHQTqAJNCuYI7r Wf3De0HHykdBf1r1t4O1WDgJKjKY5P/r8cYs5NP8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?Jan=20Sch=C3=A4r?= , Hans de Goede , "Rafael J. Wysocki" Subject: [PATCH 7.0 008/307] ACPI: video: Add backlight=native quirk for Dell OptiPlex 7770 AIO Date: Tue, 12 May 2026 19:36:43 +0200 Message-ID: <20260512173940.299797361@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260512173940.117428952@linuxfoundation.org> References: <20260512173940.117428952@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 7.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jan Schär commit ad7997f5a01af6f711fe6b6a2df578b964109d49 upstream. The Dell OptiPlex 7770 AIO needs the same quirk as the 7760 AIO. The backlight can be controlled with the native controller, intel_backlight, but not with dell_uart_backlight. I dumped the DSDT using acpidump, acpixtract and iasl, and confirmed that it contains the DELL0501 device. When loading the dell_uart_backlight driver with `rmmod dell_uart_backlight`, `modprobe dell_uart_backlight dyndbg`, it reports "Firmware version: GL_Re_V18". Fixes: cd8e468efb4f ("ACPI: video: Add Dell UART backlight controller detection") Cc: All applicable Signed-off-by: Jan Schär Reviewed-by: Hans de Goede Link: https://patch.msgid.link/20260411092606.47925-1-jan@jschaer.ch Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/video_detect.c | 8 ++++++++ 1 file changed, 8 insertions(+) --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -878,6 +878,14 @@ static const struct dmi_system_id video_ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7760 AIO"), }, }, + { + .callback = video_detect_force_native, + /* Dell OptiPlex 7770 AIO */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7770 AIO"), + }, + }, /* * Models which have nvidia-ec-wmi support, but should not use it.