From: Abhinav Kumar <quic_abhin...@quicinc.com>

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_abhin...@quicinc.com>
Signed-off-by: Yongxing Mou <quic_yong...@quicinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 21 ++++++++++----
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     | 43 +++++++++++++++++++++++++++++
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h     |  2 +-
 3 files changed, 60 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 
7020098360e474ee149824a488d912a7ad8ed06a..75cc2d475440fcdc941aa9eb19e78a87e83b5f5f
 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2611,11 +2611,13 @@ uint32_t dpu_encoder_get_clones(struct drm_encoder 
*drm_enc)
 
 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;
+       u32 intf_id;
 
        if (!dpu_enc) {
                DPU_ERROR("invalid arg(s), enc %d\n", dpu_enc != NULL);
@@ -2658,9 +2660,18 @@ 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 = dpu_kms_get_mst_intf_id(dpu_kms, 
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);
@@ -2760,7 +2771,7 @@ 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);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 
e030476dc4c69448886c29bcfe8ff3105949b129..f82dcf7c6dd31f078bbe4afe55d4667a4867f0b7
 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -574,6 +574,49 @@ static int dpu_kms_dsi_set_te_source(struct 
msm_display_info *info,
        return -EINVAL;
 }
 
+u32 dpu_kms_get_mst_intf_id(struct dpu_kms *dpu_kms, int controller_id, int 
stream_id)
+{
+       const struct dpu_mdss_cfg *catalog = dpu_kms->catalog;
+       int i;
+       int cnt = 0;
+       u32 intf_id = INTF_0;
+
+       /* The intf order in dpu_intf_cfg matches the mapping in the DP HPG.
+        * DPU_8_4_0 - DP Controller intf to stream Mapping
+        *
+        * +-------------+----------+----------+----------+----------+
+        * | stream_id   |    0     |    1     |    2     |    3     |
+        * +-------------+----------+----------+----------+----------+
+        * | DP0         | INTF_0   | INTF_3   | INTF_6   | INTF_7   |
+        * | DP1         | INTF_4   | INTF_8   |          |          |
+        * +-------------+----------+----------+----------+----------+
+        *
+        * DPU_9_2_0 - DP Controller intf to stream Mapping
+        *
+        * +-------------+----------+----------+
+        * | Controller  |    0     |    1     |
+        * +-------------+----------+----------+
+        * | DP0         | INTF_0   | INTF_3   |
+        * | DP1         | INTF_4   | INTF_8   |
+        * | DP2         | INTF_6   | INTF_7   |
+        * +-------------+----------+----------+
+        */
+       for (i = 0; i < catalog->intf_count; i++) {
+               const struct dpu_intf_cfg *intf = &catalog->intf[i];
+
+               if (intf->type == INTF_DP && controller_id == 
intf->controller_id) {
+                       if (cnt == stream_id) {
+                               intf_id = intf->id;
+                               break;
+                       }
+
+                       cnt++;
+               }
+       }
+
+       return intf_id;
+}
+
 static int _dpu_kms_initialize_dsi(struct drm_device *dev,
                                    struct msm_drm_private *priv,
                                    struct dpu_kms *dpu_kms)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 
a57ec2ec106083e8f93578e4307e8b13ae549c08..388cd8f84fd579ce30a69989be5ac116bb727878
 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -168,5 +168,5 @@ int dpu_enable_vblank(struct msm_kms *kms, struct drm_crtc 
*crtc);
 void dpu_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
 
 unsigned long dpu_kms_get_clk_rate(struct dpu_kms *dpu_kms, char *clock_name);
-
+u32 dpu_kms_get_mst_intf_id(struct dpu_kms *dpu_kms, int controller_id, int 
stream_id);
 #endif /* __dpu_kms_H__ */

-- 
2.34.1

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