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From: Kai-Heng Feng <kai.heng.feng@canonical.com>
To: maarten.lankhorst@linux.intel.com, mripard@kernel.org,
	airlied@linux.ie, daniel@ffwll.ch
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	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	[thread overview]
Message-ID: <20200323053528.3147-1-kai.heng.feng@canonical.com> (raw)

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 <kai.heng.feng@canonical.com>
---
 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


             reply	other threads:[~2020-03-23  5:35 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-23  5:35 Kai-Heng Feng [this message]
2020-03-27 11:03 ` Kai-Heng Feng
2020-04-07  6:07   ` Kai-Heng Feng
2020-04-08  7:22     ` Jani Nikula
2020-10-07  7:01       ` Kai-Heng Feng
2021-01-18 13:56         ` Niccolo Maggioni

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