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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-31c23006d72sm5202274a91.1.2025.07.11.17.58.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Jul 2025 17:58:28 -0700 (PDT) From: Jessica Zhang Date: Fri, 11 Jul 2025 17:58:06 -0700 Subject: [PATCH 01/19] drm/msm/dp: Track when DP is physically plugged in 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: <20250711-hpd-refactor-v1-1-33cbac823f34@oss.qualcomm.com> References: <20250711-hpd-refactor-v1-0-33cbac823f34@oss.qualcomm.com> In-Reply-To: <20250711-hpd-refactor-v1-0-33cbac823f34@oss.qualcomm.com> To: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Jessica Zhang Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Yongxing Mou X-Mailer: b4 0.15-dev-a9b2a X-Developer-Signature: v=1; a=ed25519-sha256; t=1752281905; l=2952; i=jessica.zhang@oss.qualcomm.com; s=20230329; h=from:subject:message-id; bh=bjSlnzJsU8vYNvjXm7NY70sSMmOsV/kR5hEvlzfFWqE=; b=fGd0JKsAxwpnFjGlCPM8DT0L2cnVp4gMuVcB1Edo1LJxe3zWfpxwDElkztOq0ic23zZXz6T6R 8QFOhmLTZ/bDTKmrdcnhAFmUyXCMi/ITBan1A5/bQ/LqH32Hsop5OGz X-Developer-Key: i=jessica.zhang@oss.qualcomm.com; a=ed25519; pk=gAUCgHZ6wTJOzQa3U0GfeCDH7iZLlqIEPo4rrjfDpWE= X-Authority-Analysis: v=2.4 cv=dYuA3WXe c=1 sm=1 tr=0 ts=6871b335 cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=EUspDBNiAAAA:8 a=dpF7G2_Zdg4AieafSv4A:9 a=QEXdDO2ut3YA:10 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzEyMDAwNSBTYWx0ZWRfX2IGIDyWLpwMn SWcmlgX+wZqs+4g77hMHKx8RaMfyD+LuQrwcQyF/OQEl+obRt6gLaZty0AKqeWdleyBvUbm36oe IMz5H87UUSbtnkb1Zq2yoCqpbLvmIFy3c90xerwIQSPimr7mN/7823M2MkUZP732kP4eGYuQee7 k0pCQSmQpvdLDe8RJQAsdZa0+pKeT0WeQhZbK2zAJ84VUdv2yz+yL7UlctR2KJdCnvBFsfq7EFD j2xL0HPeg2a2sEg03vGUdz12Y06bkZfUtJQMA49CdstSMnBul5NxftT03yFVwtNXCvdhzc9prcj CzEWTeiQPSQRMn83NmoA2nu5kFhzKcbE4Yn4XNspcWzdLPt6yKDEnJ4JGCW+y9VfBFBZuOnVYbR qXiMw0zp7VyedmMz/VzQCSybdYPdBhVuATGN8VQHwxExLARhG5bIZGglsVuwXgFEmH4AyhPN X-Proofpoint-GUID: sY3_QvhcBGmPNxKVH1X-sfQfs_09Rskz X-Proofpoint-ORIG-GUID: sY3_QvhcBGmPNxKVH1X-sfQfs_09Rskz X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-07-11_07,2025-07-09_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 suspectscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 priorityscore=1501 spamscore=0 adultscore=0 mlxlogscore=999 malwarescore=0 mlxscore=0 bulkscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507120005 Add a boolean to track whether the DP cable is physically plugged in. Signed-off-by: Jessica Zhang --- drivers/gpu/drm/msm/dp/dp_display.c | 11 ++++++++++- drivers/gpu/drm/msm/dp/dp_display.h | 1 + 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/d= p_display.c index d87d47cc7ec3..6945df782f7b 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -531,6 +531,7 @@ static int msm_dp_display_handle_port_status_changed(st= ruct msm_dp_display_priva rc =3D msm_dp_display_process_hpd_high(dp); if (rc) dp->hpd_state =3D ST_DISCONNECTED; + dp->msm_dp_display.connected =3D true; } } =20 @@ -604,6 +605,8 @@ static int msm_dp_hpd_plug_handle(struct msm_dp_display= _private *dp, u32 data) return 0; } =20 + dp->msm_dp_display.connected =3D true; + if (state =3D=3D ST_DISCONNECT_PENDING) { /* wait until ST_DISCONNECTED */ msm_dp_add_event(dp, EV_HPD_PLUG_INT, 0, 1); /* delay =3D 1 */ @@ -621,6 +624,7 @@ static int msm_dp_hpd_plug_handle(struct msm_dp_display= _private *dp, u32 data) ret =3D msm_dp_display_usbpd_configure_cb(&pdev->dev); if (ret) { /* link train failed */ dp->hpd_state =3D ST_DISCONNECTED; + dp->msm_dp_display.connected =3D false; pm_runtime_put_sync(&pdev->dev); } else { dp->hpd_state =3D ST_MAINLINK_READY; @@ -662,6 +666,8 @@ static int msm_dp_hpd_unplug_handle(struct msm_dp_displ= ay_private *dp, u32 data) drm_dbg_dp(dp->drm_dev, "Before, type=3D%d hpd_state=3D%d\n", dp->msm_dp_display.connector_type, state); =20 + dp->msm_dp_display.connected =3D false; + /* unplugged, no more irq_hpd handle */ msm_dp_del_event(dp, EV_IRQ_HPD_INT); =20 @@ -680,6 +686,7 @@ static int msm_dp_hpd_unplug_handle(struct msm_dp_displ= ay_private *dp, u32 data) msm_dp_ctrl_off_link(dp->ctrl); msm_dp_display_host_phy_exit(dp); dp->hpd_state =3D ST_DISCONNECTED; + dp->msm_dp_display.connected =3D false; msm_dp_display_notify_disconnect(&dp->msm_dp_display.pdev->dev); pm_runtime_put_sync(&pdev->dev); mutex_unlock(&dp->event_mutex); @@ -1596,8 +1603,10 @@ void msm_dp_bridge_atomic_enable(struct drm_bridge *= drm_bridge, return; } =20 - if (dp->is_edp) + if (dp->is_edp) { msm_dp_hpd_plug_handle(msm_dp_display, 0); + dp->connected =3D true; + } =20 mutex_lock(&msm_dp_display->event_mutex); if (pm_runtime_resume_and_get(&dp->pdev->dev)) { diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/d= p_display.h index cc6e2cab36e9..68bd8be19463 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.h +++ b/drivers/gpu/drm/msm/dp/dp_display.h @@ -16,6 +16,7 @@ struct msm_dp { struct platform_device *pdev; struct drm_connector *connector; struct drm_bridge *next_bridge; + bool connected; bool link_ready; bool audio_enabled; bool power_on; --=20 2.50.1