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Fri, 6 Dec 2024 04:32:45 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, 5 Dec 2024 20:32:44 -0800 From: Abhinav Kumar Date: Thu, 5 Dec 2024 20:32:07 -0800 Subject: [PATCH 36/45] drm/msm/dp: propagate hpd state changes to dp mst module Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20241205-dp_mst-v1-36-f8618d42a99a@quicinc.com> References: <20241205-dp_mst-v1-0-f8618d42a99a@quicinc.com> In-Reply-To: <20241205-dp_mst-v1-0-f8618d42a99a@quicinc.com> To: Rob Clark , Dmitry Baryshkov , Sean Paul , Marijn Suijten , David Airlie , "Simona Vetter" , Stephen Boyd , "Chandan Uddaraju" , Guenter Roeck , Kuogee Hsieh , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: Vara Reddy , Rob Clark , Tanmay Shah , , , , , , Jessica Zhang , Laurent Pinchart , Abhinav Kumar , Yongxing Mou X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1733459543; l=3833; i=quic_abhinavk@quicinc.com; s=20240509; h=from:subject:message-id; bh=25pnk1B4If/6NzuJB7z+hEFzehH0D+VdIKyoqK3RzkI=; b=Iaqs/0YMH7/s3P1s6aKktM4fkOaWb9t6E+/1/FyMyGiJRvUoukRz5mPZ4o1g6MrVWNyY1588k oIdaXnDap8BB4lK6fzmSPfqv4zMfD4SXdjRJPkBBwc+QaUWJKUEeSAZ X-Developer-Key: i=quic_abhinavk@quicinc.com; a=ed25519; pk=SD3D8dOKDDh6BoX3jEYjsHrTFwuIK8+o0cLPgQok9ys= X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) 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-GUID: QD2e65C3TEdrOVQypf6utEh-s9WjKQ1e X-Proofpoint-ORIG-GUID: QD2e65C3TEdrOVQypf6utEh-s9WjKQ1e X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 impostorscore=0 suspectscore=0 clxscore=1015 malwarescore=0 lowpriorityscore=0 phishscore=0 priorityscore=1501 bulkscore=0 mlxlogscore=999 adultscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412060030 From: Yongxing Mou Propagate the hpd state changes to dp mst module so that it can be synchronized with the cable connect/disconnect. Signed-off-by: Yongxing Mou Signed-off-by: Abhinav Kumar --- drivers/gpu/drm/msm/dp/dp_display.c | 20 ++++++++++++++++++++ drivers/gpu/drm/msm/dp/dp_mst_drm.c | 18 ++++++++++++++++++ drivers/gpu/drm/msm/dp/dp_mst_drm.h | 1 + 3 files changed, 39 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 97f8228042773f51f23a9d39fc009de0798059d7..80df79a7c2077d49184cdeb7b801bf0699ff4ece 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -26,6 +26,7 @@ #include "dp_drm.h" #include "dp_audio.h" #include "dp_debug.h" +#include "dp_mst_drm.h" static bool psr_enabled = false; module_param(psr_enabled, bool, 0); @@ -409,6 +410,17 @@ static void msm_dp_display_mst_init(struct msm_dp_display_private *dp) msm_dp->mst_active = true; } +static void msm_dp_display_set_mst_mgr_state(struct msm_dp_display_private *dp, + bool state) +{ + if (!dp->msm_dp_display.mst_active) + return; + + msm_dp_mst_display_set_mgr_state(&dp->msm_dp_display, state); + + drm_dbg_dp(dp->drm_dev, "mst_mgr_state: %d\n", state); +} + static int msm_dp_display_process_hpd_high(struct msm_dp_display_private *dp) { struct drm_connector *connector = dp->msm_dp_display.connector; @@ -455,6 +467,8 @@ static int msm_dp_display_process_hpd_high(struct msm_dp_display_private *dp) goto end; } + msm_dp_display_set_mst_mgr_state(dp, true); + msm_dp_add_event(dp, EV_USER_NOTIFICATION, true, 0); end: @@ -521,6 +535,12 @@ static int msm_dp_display_usbpd_configure_cb(struct device *dev) static int msm_dp_display_notify_disconnect(struct device *dev) { struct msm_dp_display_private *dp = dev_get_dp_display_private(dev); + struct msm_dp *dp_display = &dp->msm_dp_display; + + if (dp_display->mst_active) { + msm_dp_mst_display_set_mgr_state(&dp->msm_dp_display, false); + dp_display->mst_active = false; + } msm_dp_add_event(dp, EV_USER_NOTIFICATION, false, 0); diff --git a/drivers/gpu/drm/msm/dp/dp_mst_drm.c b/drivers/gpu/drm/msm/dp/dp_mst_drm.c index 313eb63b9a35cbbb36db2d7d8f0a85e4441f2998..1149af71d01f99ba5326870fa69e30ae081d6101 100644 --- a/drivers/gpu/drm/msm/dp/dp_mst_drm.c +++ b/drivers/gpu/drm/msm/dp/dp_mst_drm.c @@ -1043,6 +1043,24 @@ msm_dp_mst_add_connector(struct drm_dp_mst_topology_mgr *mgr, return &mst_connector->connector; } +int msm_dp_mst_display_set_mgr_state(struct msm_dp *dp_display, bool state) +{ + int rc; + struct msm_dp_mst *mst = dp_display->msm_dp_mst; + + if (state) + mst->mst_session_hpd_state = state; + + rc = drm_dp_mst_topology_mgr_set_mst(&mst->mst_mgr, state); + if (rc < 0) { + DRM_ERROR("failed to set topology mgr state to %d. rc %d\n", + state, rc); + } + + drm_dbg_dp(dp_display->drm_dev, "dp_mst_display_set_mgr_state state:%d\n", state); + return rc; +} + static const struct drm_dp_mst_topology_cbs msm_dp_mst_drm_cbs = { .add_connector = msm_dp_mst_add_connector, }; diff --git a/drivers/gpu/drm/msm/dp/dp_mst_drm.h b/drivers/gpu/drm/msm/dp/dp_mst_drm.h index b1adb8a61115d4809107553809206bb2ed3c6c3d..b89913ef7b343d449e0003f56b96df049fa36e89 100644 --- a/drivers/gpu/drm/msm/dp/dp_mst_drm.h +++ b/drivers/gpu/drm/msm/dp/dp_mst_drm.h @@ -105,5 +105,6 @@ int msm_dp_mst_init(struct msm_dp *dp_display, u32 max_streams, u32 max_dpcd_transaction_bytes, struct drm_dp_aux *drm_aux); void msm_dp_mst_display_hpd_irq(struct msm_dp *dp_display); +int msm_dp_mst_display_set_mgr_state(struct msm_dp *dp_display, bool state); #endif /* _DP_MST_DRM_H_ */