linux-kernel - [PATCH 41/45] drm/msm/dpu: use msm_dp_get_mst_intf

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Message-ID: <20241205-dp_mst-v1-41-f8618d42a99a@quicinc.com>
Date: Thu, 5 Dec 2024 20:32:12 -0800
From: Abhinav Kumar <quic_abhinavk@...cinc.com>
To: Rob Clark <robdclark@...il.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten
	<marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, "Simona
 Vetter" <simona@...ll.ch>,
        Stephen Boyd <swboyd@...omium.org>,
        "Chandan
 Uddaraju" <chandanu@...eaurora.org>,
        Guenter Roeck <groeck@...omium.org>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>,
        Bjorn Andersson
	<andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring
	<robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
	<conor+dt@...nel.org>
CC: Vara Reddy <quic_varar@...cinc.com>, Rob Clark <robdclark@...omium.org>,
        Tanmay Shah <tanmay@...eaurora.org>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>, <freedreno@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        Jessica Zhang
	<quic_jesszhan@...cinc.com>,
        Laurent Pinchart
	<laurent.pinchart@...asonboard.com>,
        Abhinav Kumar
	<quic_abhinavk@...cinc.com>
Subject: [PATCH 41/45] drm/msm/dpu: use msm_dp_get_mst_intf_id() to get the
 intf id

Use msm_dp_get_mst_intf_id() to get the intf id for the DP MST
controller as the intf_id is unique for each MST stream of each
DP controller.

Signed-off-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 83de7564e2c1fe14fcf8c4f82335cafc937e1b99..ce2f0fa8ebb1efd1a229a99543593965dbccd752 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2512,17 +2512,23 @@ static int dpu_encoder_virt_add_phys_encs(
 
 static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc,
 				 struct dpu_kms *dpu_kms,
-				 struct msm_display_info *disp_info)
+				 struct msm_display_info *disp_info,
+				 int drm_enc_mode)
 {
 	int ret = 0;
 	int i = 0;
 	struct dpu_enc_phys_init_params phys_params;
+	unsigned int intf_id;
+	struct msm_drm_private *priv;
+	struct drm_encoder *drm_enc;
 
 	if (!dpu_enc) {
 		DPU_ERROR("invalid arg(s), enc %d\n", dpu_enc != NULL);
 		return -EINVAL;
 	}
 
+	drm_enc = &dpu_enc->base;
+	priv = drm_enc->dev->dev_private;
 	dpu_enc->cur_master = NULL;
 
 	memset(&phys_params, 0, sizeof(phys_params));
@@ -2559,9 +2565,18 @@ static int dpu_encoder_setup_display(struct dpu_encoder_virt *dpu_enc,
 		DPU_DEBUG("h_tile_instance %d = %d, split_role %d\n",
 				i, controller_id, phys_params.split_role);
 
-		phys_params.hw_intf = dpu_encoder_get_intf(dpu_kms->catalog, &dpu_kms->rm,
-							   disp_info->intf_type,
-							   controller_id);
+		if (drm_enc_mode == DRM_MODE_ENCODER_DPMST) {
+			intf_id = msm_dp_get_mst_intf_id(priv->dp[controller_id],
+							 disp_info->stream_id);
+			DPU_DEBUG("intf_id %d for disp_info->stream_id = %d\n", intf_id,
+				  disp_info->stream_id);
+			phys_params.hw_intf = dpu_rm_get_intf(&dpu_kms->rm, intf_id);
+
+		} else {
+			phys_params.hw_intf = dpu_encoder_get_intf(dpu_kms->catalog, &dpu_kms->rm,
+								   disp_info->intf_type,
+								   controller_id);
+		}
 
 		if (disp_info->intf_type == INTF_WB && controller_id < WB_MAX)
 			phys_params.hw_wb = dpu_rm_get_wb(&dpu_kms->rm, controller_id);
@@ -2662,7 +2677,7 @@ struct drm_encoder *dpu_encoder_init(struct drm_device *dev,
 	mutex_init(&dpu_enc->enc_lock);
 	mutex_init(&dpu_enc->rc_lock);
 
-	ret = dpu_encoder_setup_display(dpu_enc, dpu_kms, disp_info);
+	ret = dpu_encoder_setup_display(dpu_enc, dpu_kms, disp_info, drm_enc_mode);
 	if (ret) {
 		DPU_ERROR("failed to setup encoder\n");
 		return ERR_PTR(-ENOMEM);

-- 
2.34.1