From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4123BC10F26 for ; Mon, 23 Mar 2020 05:35:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1C8C92073E for ; Mon, 23 Mar 2020 05:35:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727283AbgCWFfo (ORCPT ); Mon, 23 Mar 2020 01:35:44 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:43612 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725930AbgCWFfo (ORCPT ); Mon, 23 Mar 2020 01:35:44 -0400 Received: from 61-220-137-37.hinet-ip.hinet.net ([61.220.137.37] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1jGFkN-00063j-9D; Mon, 23 Mar 2020 05:35:35 +0000 From: Kai-Heng Feng To: maarten.lankhorst@linux.intel.com, mripard@kernel.org, airlied@linux.ie, daniel@ffwll.ch Cc: Kai-Heng Feng , Thomas Zimmermann , dri-devel@lists.freedesktop.org (open list:DRM DRIVERS), linux-kernel@vger.kernel.org (open list) Subject: [PATCH] drm/i915: Force DPCD backlight mode for HP Spectre x360 Convertible 13t-aw100 Date: Mon, 23 Mar 2020 13:35:28 +0800 Message-Id: <20200323053528.3147-1-kai.heng.feng@canonical.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org There's another OLED panel needs to use DPCD aux interface to control backlight. BugLink: https://bugs.launchpad.net/bugs/1860303 Signed-off-by: Kai-Heng Feng --- drivers/gpu/drm/drm_dp_helper.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 8ba4531e808d..a0d4314663de 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -1301,6 +1301,8 @@ static const struct edid_quirk edid_quirk_list[] = { * only supports DPCD backlight controls */ { MFG(0x4c, 0x83), PROD_ID(0x41, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) }, + /* HP Spectre x360 Convertible 13t-aw100 */ + { MFG(0x4c, 0x83), PROD_ID(0x42, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) }, /* * Some Dell CML 2020 systems have panels support both AUX and PWM * backlight control, and some only support AUX backlight control. All -- 2.17.1