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[129.46.232.65]) by smtp.gmail.com with ESMTPSA id af79cd13be357-926004ab49csm2087974385a.34.2026.06.29.07.48.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jun 2026 07:48:54 -0700 (PDT) From: Yongxing Mou Date: Mon, 29 Jun 2026 22:48:06 +0800 Subject: [PATCH 4/5] drm/msm/dp: report IRQ_HPD as an IRQ-only notification MIME-Version: 1.0 Message-Id: <20260629-msm-dp-msttypec-v1-4-646a10256233@oss.qualcomm.com> References: <20260629-msm-dp-msttypec-v1-0-646a10256233@oss.qualcomm.com> In-Reply-To: <20260629-msm-dp-msttypec-v1-0-646a10256233@oss.qualcomm.com> To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Tomi Valkeinen , Bjorn Andersson , Konrad Dybcio Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, Yongxing Mou X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1782744487; l=3483; i=yongxing.mou@oss.qualcomm.com; s=20250910; h=from:subject:message-id; bh=TY/Ycd0Pv0UYVXHobfUENPm0aoX/GRTId1HfFoGzN1Y=; b=AweWrHKC11A5BUtjWFtmRQjNIxUkW7uePMZ5PMNnbD77GSRS7TqPFahMkouslMZ1c+wEOjpym c2STxLMOEvRCcfMVC2RaEefZcMBHE71VDmHjWjqIJ+WHqFr7aOTLrQH X-Developer-Key: i=yongxing.mou@oss.qualcomm.com; a=ed25519; pk=rAy5J1eP+V7OXqH5FJ7ngMCtUrnHhut30ZTldOj52UM= X-Proofpoint-GUID: i1qYRWL0J3JoJd3thRtiFfdPva98zFze X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI5MDEyMyBTYWx0ZWRfX5TheCuxU0B7n kriQ9o3/b25awo6eo3PRqYXtDfsKANCt7IVeOXW0CWglebPzUw7EFIkXuLe1fr7e9LZNJeJqtMr OglGAygbI6WlYN/4UaV4rsN1s+Taa5Q= X-Proofpoint-ORIG-GUID: i1qYRWL0J3JoJd3thRtiFfdPva98zFze X-Authority-Analysis: v=2.4 cv=PqSjqQM3 c=1 sm=1 tr=0 ts=6a4285d8 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=C3Dk8TwHQYyIj7nOf9RCJw==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=MqOh_s_JX8DWAqdrIDMA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI5MDEyMyBTYWx0ZWRfXyGqssSe+OlKa 33Ok9J5qxoJI/5ua5BDDg9WHq/eicPYSQdBEldCirJHfPSmu49ZGbiKf2Wp5YnxHwIBbykAJ4QK OTL2NpiHPJkXa2ICjbbacLVTl58iMTJIUI5BHa/oOe+lvvAdb6n+eUrwCG+uzKb/F94Ls50a2sz QN3TqPH+x4qlmtio4IANNKkDKKmbxXV0qxbEaeNE/2D05n9nTk8YRWU/yGd1cL1LFmg7ALggv0X rciGcFG0iacNEM4ExtI2MheZSwwp3PueLvPolY9/k6uqGxGcgWLHSo4LqztQewhzey3YU9cTAb8 AE0mJa3+IoyGv8eK42GZEX24eyJpb1aQpKYhqjuIcDWk7Upw9Z0B48WAjbzuEm8ifVEiUo6iYCa Delkoq0MFWFxhIFM1ZYj6jJZ/Dz53O4a3Kr/W1n0Aq89wi1D9mtf3MVOgXiggEVwz35GeGfBMSa UTRCRIkVGkkqYckTifA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-29_03,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 adultscore=0 clxscore=1015 lowpriorityscore=0 bulkscore=0 malwarescore=0 phishscore=0 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606290123 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260629_154902_345733_C83FBDC8 X-CRM114-Status: GOOD ( 15.04 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org MST reuses the SST connector bridge to propagate HPD IRQ events through the bridge chain. For IRQ_HPD notifications there is no connector state transition to report. Use connector_status_unknown together with DRM_CONNECTOR_DP_IRQ_HPD so that the bridge connector framework treats them as IRQ-only notifications and forwards them without modifying connector state. The DP driver handles IRQ_HPD events based on DRM_CONNECTOR_DP_IRQ_HPD rather than connector status transitions. Signed-off-by: Yongxing Mou --- drivers/gpu/drm/msm/dp/dp_display.c | 22 +++++++++------------- drivers/soc/qcom/pmic_glink_altmode.c | 14 +++++++++----- 2 files changed, 18 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index bc93b566fbca..4ee391cc7165 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -1119,14 +1119,10 @@ static irqreturn_t msm_dp_display_irq_thread(int irq, void *dev_id) drm_bridge_hpd_notify(dp->msm_dp_display.bridge, connector_status_connected); - /* Send HPD as connected and distinguish it in the notifier */ - if (hpd_isr_status & DP_DP_IRQ_HPD_INT_MASK) { - if (dp->msm_dp_display.mst_active) - msm_dp_irq_hpd_handle(dp); - else - drm_bridge_hpd_notify(dp->msm_dp_display.bridge, - connector_status_connected); - } + if (hpd_isr_status & DP_DP_IRQ_HPD_INT_MASK) + drm_bridge_hpd_notify_extra(dp->msm_dp_display.bridge, + connector_status_unknown, + DRM_CONNECTOR_DP_IRQ_HPD); ret = IRQ_HANDLED; @@ -1781,11 +1777,11 @@ void msm_dp_bridge_hpd_notify(struct drm_bridge *bridge, drm_dbg_dp(dp->drm_dev, "type=%d link hpd_link_status=0x%x, status=%d\n", msm_dp_display->connector_type, hpd_link_status, status); - if (status == connector_status_connected) { - if (hpd_link_status == ISR_IRQ_HPD_PULSE_COUNT || - extra_status == DRM_CONNECTOR_DP_IRQ_HPD) { - msm_dp_irq_hpd_handle(dp); - } else if (hpd_link_status == ISR_HPD_REPLUG_COUNT) { + if (extra_status == DRM_CONNECTOR_DP_IRQ_HPD || + hpd_link_status == ISR_IRQ_HPD_PULSE_COUNT) { + msm_dp_irq_hpd_handle(dp); + } else if (status == connector_status_connected) { + if (hpd_link_status == ISR_HPD_REPLUG_COUNT) { msm_dp_hpd_unplug_handle(dp); msm_dp_hpd_plug_handle(dp); } else { diff --git a/drivers/soc/qcom/pmic_glink_altmode.c b/drivers/soc/qcom/pmic_glink_altmode.c index 946eb20b8f83..28ab8cbb5ef9 100644 --- a/drivers/soc/qcom/pmic_glink_altmode.c +++ b/drivers/soc/qcom/pmic_glink_altmode.c @@ -373,11 +373,15 @@ static void pmic_glink_altmode_worker(struct work_struct *work) else conn_status = connector_status_disconnected; - drm_aux_hpd_bridge_notify_extra(&alt_port->bridge->dev, - conn_status, - alt_port->hpd_irq ? - DRM_CONNECTOR_DP_IRQ_HPD : - DRM_CONNECTOR_NO_EXTRA_STATUS); + if (alt_port->hpd_irq) { + drm_aux_hpd_bridge_notify_extra(&alt_port->bridge->dev, + connector_status_unknown, + DRM_CONNECTOR_DP_IRQ_HPD); + } else { + drm_aux_hpd_bridge_notify_extra(&alt_port->bridge->dev, + conn_status, + DRM_CONNECTOR_NO_EXTRA_STATUS); + } } else if (alt_port->mux_ctrl == MUX_CTRL_STATE_TUNNELING) { if (alt_port->svid == USB_TYPEC_TBT_SID) pmic_glink_altmode_enable_tbt(altmode, alt_port); -- 2.43.0 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic