From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AG47ELsJrIcW3YrAKDH8oHs+ZqBdmmV1IXZcygj566jfXX8NMKDDgYdl0BclY0VkEj8abqFN0d1l ARC-Seal: i=1; a=rsa-sha256; t=1519676494; cv=none; d=google.com; s=arc-20160816; b=nu6YiEizziCNCuHIWVbQLckAIjz7NASfBEfN7P1bisz6cBW6r+7PKrehqG2IzLmfE8 MzLLKeQSovVP9t7/R1P5GKU/8t/+1mifJ+K50ntunp2PxIRsQD0zSZOJhrzpVp4f962G eyYyKiphjNDjRxDzaccXmcXj/gIfD2rFW0O7zCvkIHkiMLc/GId7Xf9eH2UUvpnE2/Tn ib3Chs6U+CtC3cF9YRwh96hquYOAsVnLK+LXYceYwOVYFzLFZGmNmsltPEOWSySgB5+6 cUkarvMXiXNNWUqINeEGEj3IphDDzh6T3ZRyVFFsJOM+u8/UNzsk2S8rRLXSZTKkjHHV ed7g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=aalfLn3YzfLAZN3gX8Dgk1D9ooRSHQXhv2eCzLqi02Q=; b=XmtbXTgmrvB3ICyJBHWoYXAwYqC0W4KgPyO8BvhUsQbN1Nki/Yf82HbgVy1ooRQRC6 wjxCVoFdMDquyQd/UwUzGBXgHKiiFo1nbCzu2/1gtVNktHdxVYcRnvmRC/+s2v9BBAvn MAAQollath88qlJFU4Z273QPUvplIYy/MoOJQXQ8uPhrAglBbKsC9ZMU6gMmoWRAG+b0 +d3XcoLA/jOmN8fhZX2/ex2yaQByNMX1NM5khINrKaaebFjMO2B/B2uOL0hPfQgs8g7b 1bJ8EWHWYlwjiHIa8XSGXXztxP5A854Q1m+eHhMdf/LgnS5VF42TNFEXODdX4L+hCpKh 0C/w== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 83.175.124.243 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 83.175.124.243 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kai-Heng Feng , Mario Kleiner , Daniel Vetter Subject: [PATCH 4.9 17/39] drm/edid: Add 6 bpc quirk for CPT panel in Asus UX303LA Date: Mon, 26 Feb 2018 21:20:38 +0100 Message-Id: <20180226201644.438807933@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180226201643.660109883@linuxfoundation.org> References: <20180226201643.660109883@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1593496004383920080?= X-GMAIL-MSGID: =?utf-8?q?1593496300416085443?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kai-Heng Feng commit 06998a756a3865817b87a129a7e5d5bb66dc1ec3 upstream. Similar to commit e10aec652f31 ("drm/edid: Add 6 bpc quirk for display AEO model 0."), the EDID reports "DFP 1.x compliant TMDS" but it support 6bpc instead of 8 bpc. Hence, use 6 bpc quirk for this panel. Fixes: 196f954e2509 ("drm/i915/dp: Revert "drm/i915/dp: fall back to 18 bpp when sink capability is unknown"") BugLink: https://bugs.launchpad.net/bugs/1749420 Signed-off-by: Kai-Heng Feng Reviewed-by: Mario Kleiner Cc: # v4.8+ Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20180218085359.7817-1-kai.heng.feng@canonical.com Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/drm_edid.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -107,6 +107,9 @@ static const struct edid_quirk { /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */ { "AEO", 0, EDID_QUIRK_FORCE_6BPC }, + /* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */ + { "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC }, + /* Belinea 10 15 55 */ { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 },