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 B25533ACA73; Mon, 13 Apr 2026 09:04:47 +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=1776071087; cv=none; b=UXr9YapYExB0fffoNpDHwScmF2jMs7mP0IVZBo/9UOEm8yu8AqmEaIAHGN2Au0VMHC8ZOnUBacTHJvVIW5ftzezCDa2dgohaa4N1zxSPayXPfP+RPVQKNe4AiJmHLq0iXrpY2o4qBGd2BTEg+6olOvh6TEm5VE6I9Tbr5y/lpls= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776071087; c=relaxed/simple; bh=ieqWHT3G4mAydQXwC4mz93Dc2fb1m1LZ29zaokKesto=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=IQhGxZVqDD2+8wLvkMcYnj047W8KE/q07kZyWt0PU2OKp3VzMAtf554GpZOwagMphyA6MMB/KuY91BLUnOCAlmgZB/u1lC3LN5Lpoa8mZPrCC9J3JxK9URbaYtX4wl+EErYesb0fyomXaKvdXu1y3oQYw+5qpai6bwYv3PX7qXI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QLkJz5Pv; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QLkJz5Pv" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 69362C2BCAF; Mon, 13 Apr 2026 09:04:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776071087; bh=ieqWHT3G4mAydQXwC4mz93Dc2fb1m1LZ29zaokKesto=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=QLkJz5PvmvfSMu5TaJt+KDY3xInepPWCvP0j27Sclh58OgV+0MgihS/AgnK1h79Ei KD00VwRhkRVBt4yzxHUWeptjJXKOlZGXhRX3dYLV/kS7pqNQTifKaP/vfN2uhoY2n8 obt3eIgsFeg/8Z0a5pZBV2qHQ1bWcXluJ0pdxDSyc3sn/VrtTgCESpiQWtwodv7nfI 1qYyGMMiT8+nSJhMV4ILWwOz3bey8Bq/5P8Mytb/FkWZ79YhIi5UNSLx9DvOrDG9UD I5Ai//FOkMmQYgcB+BOoBBQBZG8ImoooTLPUdzZU6p/G9fdlUPNhFNcTV4MqaM6M9X 10GfXiGbKZaxQ== Message-ID: Date: Mon, 13 Apr 2026 11:04:43 +0200 Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] ACPI: video: Add backlight=native quirk for Dell OptiPlex 7770 AIO To: =?UTF-8?Q?Jan_Sch=C3=A4r?= , "Rafael J . Wysocki" Cc: Len Brown , linux-acpi@vger.kernel.org, stable@vger.kernel.org References: <20260411092606.47925-1-jan@jschaer.ch> From: Hans de Goede Content-Language: en-US, nl In-Reply-To: <20260411092606.47925-1-jan@jschaer.ch> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi, On 11-Apr-26 11:26 AM, Jan Schär wrote: > 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: stable@vger.kernel.org > Signed-off-by: Jan Schär Thanks, patch looks good to me: Reviewed-by: Hans de Goede Regards, Hans > --- > 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 4cf74f173c78..4a2132ae28b4 100644 > --- a/drivers/acpi/video_detect.c > +++ b/drivers/acpi/video_detect.c > @@ -878,6 +878,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { > 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. > > base-commit: 591cd656a1bf5ea94a222af5ef2ee76df029c1d2