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[129.46.232.65]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-90778588a39sm84793216d6.20.2026.07.19.23.10.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 19 Jul 2026 23:10:45 -0700 (PDT) From: Yongxing Mou Subject: [PATCH v8 00/15] drm/msm/dp: Prerequisite cleanup for upcoming MST support Date: Mon, 20 Jul 2026 14:08:07 +0800 Message-Id: <20260720-dp_mstclean-v8-0-bea261bf4e7d@oss.qualcomm.com> 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: 7bit X-B4-Tracking: v=1; b=H4sIAEe7XWoC/3XOwW7DIAwG4FeJOI8KDAHS095jmipDzYrUJC2k0 aoq7z6aHrZK3cXSb8mf/xsrlBMVtm1uLNOcShqHGtxbw8IBhy/iaV8zAwFGtOD4/rTryxSOhAO PotOB0AUEzerFKVNM36v28fnImc6Xik6PJfNYiIex79O0bYSVDpxCD84H1QlLUngj0XjtyUSKK IP3ENndOqQyjfm6Fp3bFXvZaW654NgByCCjjMq/j6Vszhc83t9u6li52fwSRsAzYSoBQdoYtcD Owz+E/Ut0z4StBKHQUipyoNQLYlmWH2P+2/p/AQAA X-Change-ID: 20260528-dp_mstclean-f094cea8ca24 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, Yongxing Mou , Dmitry Baryshkov , Abhinav Kumar X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1784527840; l=3646; i=yongxing.mou@oss.qualcomm.com; s=20250910; h=from:subject:message-id; bh=PJ0sxFhnEHsV2GmP43kohhZ45+dKgPmt9r5NIhHpWo0=; b=AI1oX0trYhPs09RMZ1NA0wi/jsPxNHf6r0C9aDwI90c51QoHy2sgaApG7SdeIaTolZqxp+dEG 7orulGG6Mu9DZGZVrtuxAHs7T9s8DamOuqUxBGNYkG/E4UpGkuEYlDd X-Developer-Key: i=yongxing.mou@oss.qualcomm.com; a=ed25519; pk=rAy5J1eP+V7OXqH5FJ7ngMCtUrnHhut30ZTldOj52UM= X-Proofpoint-GUID: 8bU00JRedAGge2mtWzjNTuXdbhLxKH3C X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIwMDA2NiBTYWx0ZWRfX36ndOGEf5RMt i3xN5H7Tm6B2RSKuDX/JEvdBO40IOeOWknnrRUTlasEhEGd0PeIBk67qmqldq0eFEPlDrT6tx4W 9OVTgxpVKf47yaTZ24y3vXIxeW3hXFMb8ud/d8rdnh2ENA7Im1v/bCb+ssr/tIMAQW8XfLAfmrN 66YfVF6L9cMTrxxKLbif4vh/3EO0OKbYg7XOLjnqfUbEkX2onIs+VNLd7KPRY5PtyNlyfEEMBgL 6UxQ25cYG4hh1X2RBDxDLcIE6snI223KACfIOoIZ5rHoVrDtdl+MkAo9LAxAPy8yPKFpFZtsfWp 7oCjZU7N81E/sV1YBJPWZcnAB46Ez4/2WYQSeJcb+PH+vDC/wqzuJoeQIMvXxoR38Dwrcj0/Dz6 i/urFSIyBZf27Uja9v6MgN/NpcFvMqMTzgmjgFmWEvd3ujBA+BamwTYi5KZGcxVnYriesfiRCZg VZ8azYnfQf4zc33MiOg== X-Proofpoint-ORIG-GUID: 8bU00JRedAGge2mtWzjNTuXdbhLxKH3C X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIwMDA2NiBTYWx0ZWRfXxwG4MAmSkDXw /HaT0mg4yOUPUjGEXMKZiK2LgmKmRF+ZrTx17M3vYdd0d4vwujwc76NWJdjKhGu4xNSJtE4gh4j x2QqPUnwJJhlDvKZKT7araCdB3dlIfU= X-Authority-Analysis: v=2.4 cv=CJQamxrD c=1 sm=1 tr=0 ts=6a5dbbe6 cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=C3Dk8TwHQYyIj7nOf9RCJw==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=vykuwZLdp5Yjkddl-pAA:9 a=QEXdDO2ut3YA:10 a=pJ04lnu7RYOZP9TFuWaZ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-19_08,2026-07-17_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 adultscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 phishscore=0 priorityscore=1501 spamscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607200066 This series is the SST-only prerequisite portion of the MSM DP MST work. It refactors the existing DP code paths so that MST can plug in cleanly in a follow-up series, without bundling the cleanup with MST functionality in the same submission. SST behaviour is preserved end-to-end; no new functionality is added here. The intent is to land these refactors first to keep the follow-up MST series focused, smaller, and easier to review. Signed-off-by: Yongxing Mou --- Changes in v8: - Rebase to next-20260717. - Fix comments from sashiko-bot. - Link to v7: https://lore.kernel.org/r/20260609-dp_mstclean-v7-0-ea04113e8233@oss.qualcomm.com Changes in v7: - patch 7: Use WARN_ON_ONCE() when pixel clock is already on. [Konrad] - Link to v6: https://lore.kernel.org/r/20260602-dp_mstclean-v6-0-2c17ff40a9b2@oss.qualcomm.com Changes in v6: - patch 4: fixed the RMW comments. [Dmitry] - patch 10: do not rename the existing struct. [Dmitry] - Link to v5: https://lore.kernel.org/r/20260528-dp_mstclean-v5-0-a9221c1f1f3b@oss.qualcomm.com Changes in v5: - Split out from v4: only the SST prerequisite cleanup (patches 1-15) is sent here; the MST implementation will follow on top. - Rebased onto linux-next-20260527; adapted bridge callbacks to the new drm_atomic_commit* API. - patch 3: added Suggested-by: Dmitry Baryshkov. - patch 4: fixed "splite" typo, reworded body, added RMW comment covering both SST and MST paths. [Dmitry] - patch 10: drop cached panel from msm_dp_ctrl_private; pass panel explicitly to all stream-related dp_ctrl APIs. [Dmitry] - patch 13/14: introduce bridge wrappers and atomic_prepare with drm_atomic_commit* from the start to preserve bisectability. - patch 15: fixed pass panel inside the func. [Dmitry] - Link to v4: https://lore.kernel.org/all/20260410-msm-dp-mst-v4-0-b20518dea8de@oss.qualcomm.com/ --- Abhinav Kumar (6): drm/msm/dp: break up dp_display_enable into two parts drm/msm/dp: re-arrange dp_display_disable() into functional parts drm/msm/dp: allow dp_ctrl stream APIs to use any panel passed to it drm/msm/dp: split dp_ctrl_off() into stream and link parts drm/msm/dp: make bridge helpers use dp_display to allow re-use drm/msm/dp: separate dp_display_prepare() into its own API Yongxing Mou (9): drm/msm/dp: remove cached drm_edid from panel drm/msm/dp: drop deprecated .mode_set() and use .atomic_enable drm/msm/dp: move mode setup into msm_dp_panel_init_panel_info() drm/msm/dp: split msm_dp_ctrl_config_ctrl() into link parts and stream parts drm/msm/dp: extract MISC1_MISC0 configuration into a separate function drm/msm/dp: split link setup from source params drm/msm/dp: move the pixel clock control to its own API drm/msm/dp: simplify link and clock disable sequence drm/msm/dp: pass panel to display enable/disable helpers drivers/gpu/drm/msm/dp/dp_ctrl.c | 383 ++++++++++++++++++++---------------- drivers/gpu/drm/msm/dp/dp_ctrl.h | 30 ++- drivers/gpu/drm/msm/dp/dp_display.c | 277 +++++++++++++------------- drivers/gpu/drm/msm/dp/dp_display.h | 8 + drivers/gpu/drm/msm/dp/dp_drm.c | 43 +++- drivers/gpu/drm/msm/dp/dp_drm.h | 12 -- drivers/gpu/drm/msm/dp/dp_panel.c | 77 ++------ drivers/gpu/drm/msm/dp/dp_panel.h | 17 +- 8 files changed, 456 insertions(+), 391 deletions(-) --- base-commit: 0718283ab28bc3907e10b61a6b4be6fefa1cbb2f change-id: 20260528-dp_mstclean-f094cea8ca24 Best regards, -- Yongxing Mou