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 992393955DB; Tue, 12 May 2026 17:52:04 +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=1778608324; cv=none; b=cn5kevd3QEh4EPbvpFq+oQhUHmHftZrVslX83pV7u5S7DtfeRQW6y9fmvPOJdEtPFYY5T9xdhZMyPEgsmwppacFmbiqwViPqQQWunBO6g3AvBY0ARONy+IGo6OPMsfn+tLVBNKU46ClQSCEQvqaA64xeSeM+8qnLbXVoZ4WHzhw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778608324; c=relaxed/simple; bh=3PwNKzuw5fNswCslRv5mKvXez3PjQbERFumJBY5iN7A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LkjKMD0b7WZQ39FEejGBUle9K2tgTJvcRX/eBbUhynSpMJG+8lYEvGNAdl0WCuaKLr/NFiOHcXBBmTbxCc55ZK2sGtVVXRLHKAIm6PyOa5WeLLSiAfbpgWMlHm53cjzzBYY1C+Shgv+S0RyklE0XjVYG65J/JrTdlfsBExJRlEM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nd199hIj; 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="nd199hIj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 30A10C2BCB0; Tue, 12 May 2026 17:52:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1778608324; bh=3PwNKzuw5fNswCslRv5mKvXez3PjQbERFumJBY5iN7A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nd199hIjCyw9H5Eu2jp9PUUSfBatF9VRUNlBovoeq+nKmIcvk3r4QgQoX2KQqJmrC sV0JLdHLMN3Z2dkCiQwkVCyjEmsHnndSh/OpsXcWdUObq6TAsHWB3eq6A1FuzRmT/f CZX4GAVEVX2LJoaheE1Y/vIxqVLvXxqdH1P7YNhE= 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 6.18 007/270] ACPI: video: Add backlight=native quirk for Dell OptiPlex 7770 AIO Date: Tue, 12 May 2026 19:36:48 +0200 Message-ID: <20260512173938.609906599@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260512173938.452574370@linuxfoundation.org> References: <20260512173938.452574370@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.18-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.