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[2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-59a18628422sm12920873e87.101.2026.01.03.05.45.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Jan 2026 05:45:09 -0800 (PST) From: Dmitry Baryshkov Date: Sat, 03 Jan 2026 15:45:05 +0200 Subject: [PATCH v2 2/3] drm/msm/dpu: Filter writeback modes using writeback maxlinewidth Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260103-max-mixer-width-v2-2-ef5d3d246709@oss.qualcomm.com> References: <20260103-max-mixer-width-v2-0-ef5d3d246709@oss.qualcomm.com> In-Reply-To: <20260103-max-mixer-width-v2-0-ef5d3d246709@oss.qualcomm.com> To: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Jessica Zhang X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1419; i=dmitry.baryshkov@oss.qualcomm.com; h=from:subject:message-id; bh=+Q+6Hy5bqNCfkb+pfv9e+lklJAD+9trTQ+iZuAR312s=; b=kA0DAAoBizyKPgIpKNUByyZiAGlZHWKjI73KgwBmz7MJKjjT2qRFABHkI3AxrhBbXqNUR+fkN 4kBMwQAAQoAHRYhBExwhJVcsmNW8LiVf4s8ij4CKSjVBQJpWR1iAAoJEIs8ij4CKSjV+roH/0AV Op0fcJYg6gjaWvUXZmerJ/B2VkJLRxcC+tIPtrFMhlEFI5jwPPjvDHN5ZlJyi8GTwYjDPo61plB Jk+sO3wctRIbOh6NTCiV7cTwDRdJeQYdlZwj+hlRiSD9bpkiNtHOx0UU2TJItgIfrVaW3srE8hk WO3v6dsWHPIqDyiiu6dA+nt6D1uLVUa2muhPUrog6BlnP8A+dQqc+7K3D/k8HTNx7HiiQXVI6Ai FxBvuCWmDEpE/YaNwo5lRgn758jGluFf2VJF1nWBXR9y+1aTN+XOthQALDVV9SULNxDVeGHmKPa 4MPFMWUeq2tXsfHhaj47aar/D0X6A40XvLQew/Q= X-Developer-Key: i=dmitry.baryshkov@oss.qualcomm.com; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A X-Proofpoint-GUID: 1Hql_EiRC01iUTJoRkYsq7dkYrpRNM1g X-Proofpoint-ORIG-GUID: 1Hql_EiRC01iUTJoRkYsq7dkYrpRNM1g X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTAzMDEyNCBTYWx0ZWRfX4msWFfnkz/IP BWkduySeL7s8giY9KdK5TVeCCo4qUuOYe09mDFzecnE6ZegIsic5NbTRPHGjWpRNh/p/bTt8va4 zmtsXWQuMYHqWS4SOpnjqvPL1dFOiphsPy51CDPFCJO0MEJ+D4c84PXaSgOkXyzxK5EAIrZrpKy oHPEFKaO1PzGtTcRqWRgKuKspaILBXvT/5qYJgfm+QnofhwbGZpbZVOVzWAA8W+oLsA7fXA8iY3 +bUJpn5BotCyA4BbjOOctvrELQUtHT0C6E07IAEeNPjOZecSzDanRNyNuRnitHggOB7nM6i1nqe /0OkcyAccTDmEXLLnXSut8SkYRBq5yuHBsBX8NVQ66+eYW+fXKqmXQwwmkq0MPzdTSw/7KXNuGZ MtUeZd6Q/P0V4Mvqdv12RiZCGSl0CGr9YiWW65pSwcIjjJfYSfCJfYf6I5S33B/BeFxTgEtJ1Uv YS1p6iKD4/zXgvliRuQ== X-Authority-Analysis: v=2.4 cv=B9G0EetM c=1 sm=1 tr=0 ts=69591d67 cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=IdaEjn1bWG-LatOizd0A:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-03_02,2025-12-31_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 phishscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 clxscore=1015 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601030124 From: Jessica Zhang Since the max mixer width is not a strict hardware limit, use the actual hardware limit (the writeback maxlinewidth) to filter modes. Signed-off-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c b/drivers/gpu/dr= m/msm/disp/dpu1/dpu_writeback.c index 7545c0293efb..209b1e27a84b 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c @@ -14,14 +14,7 @@ static int dpu_wb_conn_get_modes(struct drm_connector *c= onnector) struct msm_drm_private *priv =3D dev->dev_private; struct dpu_kms *dpu_kms =3D to_dpu_kms(priv->kms); =20 - /* - * We should ideally be limiting the modes only to the maxlinewidth but - * on some chipsets this will allow even 4k modes to be added which will - * fail the per SSPP bandwidth checks. So, till we have dual-SSPP support - * and source split support added lets limit the modes based on max_mixer= _width - * as 4K modes can then be supported. - */ - return drm_add_modes_noedid(connector, dpu_kms->catalog->caps->max_mixer_= width, + return drm_add_modes_noedid(connector, dpu_kms->catalog->wb->maxlinewidth, dev->mode_config.max_height); } =20 --=20 2.47.3