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Fri, 06 Dec 2024 04:32:29 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA02.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 4B64WTva022103 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 6 Dec 2024 04:32:29 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 20:32:28 -0800 From: Abhinav Kumar Date: Thu, 5 Dec 2024 20:31:39 -0800 Subject: [PATCH 08/45] drm/msm/dp: re-arrange dp_display_disable() into functional parts MIME-Version: 1.0 Message-ID: <20241205-dp_mst-v1-8-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 X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1733459543; l=4223; i=quic_abhinavk@quicinc.com; s=20240509; h=from:subject:message-id; bh=yvT6Jr513vkKhsELJWUcp9wgCA2SfOU7ogrWkba7mr8=; b=QU7mSpbsfiT3AxSB+QSwrFdqHTgBUl1r+2Lo6YrxawQNOsh8SbM4ZHEAsPMHqBs1QA3J6YxZH fgHD6WCbitHATzYLsfhhcAXMfxjxmCat9BiF2MkY0ooOF/6RBCXBttR X-Developer-Key: i=quic_abhinavk@quicinc.com; a=ed25519; pk=SD3D8dOKDDh6BoX3jEYjsHrTFwuIK8+o0cLPgQok9ys= X-Originating-IP: [10.80.80.8] 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-ORIG-GUID: lSm2RenIDzOQr36bLI9Ex1oQUN1vFMiX X-Proofpoint-GUID: lSm2RenIDzOQr36bLI9Ex1oQUN1vFMiX 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 bulkscore=0 phishscore=0 priorityscore=1501 impostorscore=0 mlxlogscore=892 clxscore=1015 malwarescore=0 suspectscore=0 spamscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2412060030 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" dp_display_disable() handles special case of when monitor is disconnected from the dongle while the dongle stays connected thereby needing a separate function dp_ctrl_off_link_stream() for this. However with a slight rework this can still be handled by keeping common paths same for regular and special case. Signed-off-by: Abhinav Kumar Reviewed-by: Dmitry Baryshkov --- drivers/gpu/drm/msm/dp/dp_ctrl.c | 29 +++++++++++++++-------------- drivers/gpu/drm/msm/dp/dp_ctrl.h | 4 ++++ drivers/gpu/drm/msm/dp/dp_display.c | 25 ++++++++++++------------- 3 files changed, 31 insertions(+), 27 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index 763bd58c24d29d49caafb76eab32b493e1618e7b..9e08996be0cb969cb96d9a3019c445ab4dfc92ef 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -2042,30 +2042,31 @@ int msm_dp_ctrl_on_stream(struct msm_dp_ctrl *msm_dp_ctrl) return ret; } -void msm_dp_ctrl_off_link_stream(struct msm_dp_ctrl *msm_dp_ctrl) +void msm_dp_ctrl_clear_vsc_sdp_pkt(struct msm_dp_ctrl *msm_dp_ctrl) { struct msm_dp_ctrl_private *ctrl; - struct phy *phy; ctrl = container_of(msm_dp_ctrl, struct msm_dp_ctrl_private, msm_dp_ctrl); - phy = ctrl->phy; - msm_dp_catalog_panel_disable_vsc_sdp(ctrl->catalog); +} - /* set dongle to D3 (power off) mode */ - msm_dp_link_psm_config(ctrl->link, &ctrl->panel->link_info, true); +void msm_dp_ctrl_psm_config(struct msm_dp_ctrl *msm_dp_ctrl) +{ + struct msm_dp_ctrl_private *ctrl; - msm_dp_catalog_ctrl_mainlink_ctrl(ctrl->catalog, false); + ctrl = container_of(msm_dp_ctrl, struct msm_dp_ctrl_private, msm_dp_ctrl); - if (ctrl->stream_clks_on) { - clk_disable_unprepare(ctrl->pixel_clk); - ctrl->stream_clks_on = false; - } + /* set dongle to D3 (power off) mode */ + msm_dp_link_psm_config(ctrl->link, &ctrl->panel->link_info, true); +} - dev_pm_opp_set_rate(ctrl->dev, 0); - msm_dp_ctrl_link_clk_disable(&ctrl->msm_dp_ctrl); +void msm_dp_ctrl_reinit_phy(struct msm_dp_ctrl *msm_dp_ctrl) +{ + struct msm_dp_ctrl_private *ctrl; + struct phy *phy; - phy_power_off(phy); + ctrl = container_of(msm_dp_ctrl, struct msm_dp_ctrl_private, msm_dp_ctrl); + phy = ctrl->phy; /* aux channel down, reinit phy */ phy_exit(phy); diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.h b/drivers/gpu/drm/msm/dp/dp_ctrl.h index 42745c912adbad7221c78f5cecefa730bfda1e75..0f58b63c5c7c5aab43c0db2a697ba491959b79d2 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.h +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.h @@ -42,4 +42,8 @@ void msm_dp_ctrl_config_psr(struct msm_dp_ctrl *msm_dp_ctrl); int msm_dp_ctrl_core_clk_enable(struct msm_dp_ctrl *msm_dp_ctrl); void msm_dp_ctrl_core_clk_disable(struct msm_dp_ctrl *msm_dp_ctrl); +void msm_dp_ctrl_clear_vsc_sdp_pkt(struct msm_dp_ctrl *msm_dp_ctrl); +void msm_dp_ctrl_psm_config(struct msm_dp_ctrl *msm_dp_ctrl); +void msm_dp_ctrl_reinit_phy(struct msm_dp_ctrl *msm_dp_ctrl); + #endif /* _DP_CTRL_H_ */ diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 434380b442ec84c12c240dab6538ccdf31963cea..bbce8ca09ff70059458231982f002e1f22d2c3ab 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -905,20 +905,19 @@ static int msm_dp_display_disable(struct msm_dp_display_private *dp) if (!msm_dp_display->power_on) return 0; - if (dp->link->sink_count == 0) { - /* - * irq_hpd with sink_count = 0 - * hdmi unplugged out of dongle - */ - msm_dp_ctrl_off_link_stream(dp->ctrl); - } else { - /* - * unplugged interrupt - * dongle unplugged out of DUT - */ - msm_dp_ctrl_off(dp->ctrl); + msm_dp_ctrl_clear_vsc_sdp_pkt(dp->ctrl); + + /* dongle is still connected but sinks are disconnected */ + if (dp->link->sink_count == 0) + msm_dp_ctrl_psm_config(dp->ctrl); + + msm_dp_ctrl_off(dp->ctrl); + + /* re-init the PHY so that we can listen to Dongle disconnect */ + if (dp->link->sink_count == 0) + msm_dp_ctrl_reinit_phy(dp->ctrl); + else msm_dp_display_host_phy_exit(dp); - } msm_dp_display->power_on = false;