From nobody Mon Sep 16 19:34:18 2024 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 D61501F17B; Thu, 25 Jul 2024 22:04:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721945080; cv=none; b=XMsiYkFMtK6JcaIomCQxKUBtkw6BCoagK3U+V4Gzh/wk98icpJZ8/oUazxVhXynwf4O4JdBsQV7daNHyMdL9MWJQ6MdwFCw1boXhTFeCDVxQ8Ckemit7SBq+OtrZmPdikGNRmGjlrQuE/I2psfznhE1XPrWCgtiJ+wk+FxMx4jQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721945080; c=relaxed/simple; bh=uuroARgVnFJ0rHpxVbnK78XB3KFDXuwJbRPhEOuTF5E=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=U2xtiz0cUREfSV/FUEtq2JizNrUDWssmTiqgVL+TDxNP+0jI4y7xdsB8RlD9c4Vyu2XlqaAq4WWo+ptTAuq/XrvCUH61Ow5AXHmvEp/folbGge+SVOUxLGGka6alTthptsm+460yehwPqjMqHRCDgnwmi84vqGR2gRUAsLM9T3c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=dcSTU7ZV; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="dcSTU7ZV" Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 46PJbVra009144; Thu, 25 Jul 2024 22:03:54 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=qcppdkim1; bh=N6UbJAMi1bU7nIh+XutsN6 bZa8Is03DzQ1MqeidxQVU=; b=dcSTU7ZV3wtNGUlgKRqMR4/kMp7oSjcnxounf/ cIUzENz7kDQjWTH0iXiR/Ey9JNk+a3WCGe5grM0e5/Tm0H9+ypOkPLt566vg5A2Y eEakexNIfOhAZCFdLlzBLvzOwE7yReQAYhL2mcZBY5QC3ISprp06HiujwypMfCQX MQ1VP4Nzb4XO77yp6FF295mbTYlg4/8/Mhqj4Bd1zTG8PvNKHmJY4ELzxKJO9lgP ICfQPGKfkeiNcmZbcQVREL+ivSCLHxFvdbfqRK947YP9omk4BuUNGWOkUc64L+nA 3KCVksikn8+ptCiCVhdIz9oQIiEYF25XV+iuEmEs2Iz8vkfQ== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 40g487pbem-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Jul 2024 22:03:54 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 46PM3rHH013267 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Jul 2024 22:03:53 GMT Received: from abhinavk-linux1.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Thu, 25 Jul 2024 15:03:52 -0700 From: Abhinav Kumar To: , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , David Airlie , "Daniel Vetter" , Guenter Roeck , Tanmay Shah , Vara Reddy , Stephen Boyd CC: , , , , , Rob Clark , "Chandan Uddaraju" , , Subject: [PATCH] drm/msm/dp: fix the max supported bpp logic Date: Thu, 25 Jul 2024 15:03:19 -0700 Message-ID: <20240725220320.130916-1-quic_abhinavk@quicinc.com> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: ziitW6v3wi2a0z_fAkYGICI3PhFNMyt5 X-Proofpoint-GUID: ziitW6v3wi2a0z_fAkYGICI3PhFNMyt5 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-25_22,2024-07-25_03,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 spamscore=0 suspectscore=0 phishscore=0 priorityscore=1501 mlxlogscore=999 malwarescore=0 adultscore=0 impostorscore=0 clxscore=1011 lowpriorityscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407250151 Content-Type: text/plain; charset="utf-8" Currently the DP driver hard-codes the max supported bpp to 30. This is incorrect because the number of lanes and max data rate supported by the lanes need to be taken into account. Replace the hardcoded limit with the appropriate math which accounts for the accurate number of lanes and max data rate. Fixes: c943b4948b58 ("drm/msm/dp: add displayPort driver support") Signed-off-by: Abhinav Kumar Tested-by: Dmitry Baryshkov # SM8350-HDK --- drivers/gpu/drm/msm/dp/dp_panel.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_= panel.c index a916b5f3b317..56ce5e4008f8 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -397,6 +397,7 @@ int dp_panel_init_panel_info(struct dp_panel *dp_panel) { struct drm_display_mode *drm_mode; struct dp_panel_private *panel; + u32 max_supported_bpp; =20 drm_mode =3D &dp_panel->dp_mode.drm_mode; =20 @@ -423,8 +424,10 @@ int dp_panel_init_panel_info(struct dp_panel *dp_panel) drm_mode->clock); drm_dbg_dp(panel->drm_dev, "bpp =3D %d\n", dp_panel->dp_mode.bpp); =20 - dp_panel->dp_mode.bpp =3D max_t(u32, 18, - min_t(u32, dp_panel->dp_mode.bpp, 30)); + max_supported_bpp =3D dp_panel_get_mode_bpp(dp_panel, dp_panel->dp_mode.b= pp, + dp_panel->dp_mode.drm_mode.clock); + dp_panel->dp_mode.bpp =3D max_t(u32, 18, max_supported_bpp); + drm_dbg_dp(panel->drm_dev, "updated bpp =3D %d\n", dp_panel->dp_mode.bpp); =20 --=20 2.44.0