[PATCH v1 3/3] drm/msm/disp/dpu1: add support for edp encoder

[Sankeerth Billakanti]

This change will enable dpu encoder support for the native
eDP interface on next generation snapdragon platforms.

Signed-off-by: Sankeerth Billakanti <sbill...@codeaurora.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c |  7 +++++-
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     | 33 +++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 8d94205..9f5185bb 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -2075,7 +2075,12 @@ static int dpu_encoder_setup_display(struct 
dpu_encoder_virt *dpu_enc,
                intf_type = INTF_DSI;
                break;
        case DRM_MODE_ENCODER_TMDS:
-               intf_type = INTF_DP;
+               if (disp_info->capabilities & MSM_DISPLAY_CAP_CMD_MODE) {
+                       intf_type = INTF_EDP;
+                       /* PSR CMD mode not supported */
+                       disp_info->capabilities = MSM_DISPLAY_CAP_VID_MODE;
+               } else
+                       intf_type = INTF_DP;
                break;
        }
 
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 88e9cc3..ecd7dc8 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -499,6 +499,33 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
        return rc;
 }
 
+static int _dpu_kms_initialize_edp(struct drm_device *dev,
+                                   struct msm_drm_private *priv,
+                                   struct dpu_kms *dpu_kms)
+{
+       struct drm_encoder *encoder = NULL;
+       int rc = 0;
+
+       if (!priv->edp)
+               return rc;
+
+       encoder = dpu_encoder_init(dev, DRM_MODE_ENCODER_TMDS);
+       if (IS_ERR(encoder)) {
+               DPU_ERROR("encoder init failed for eDP display\n");
+               return PTR_ERR(encoder);
+       }
+
+       rc = msm_edp_modeset_init(priv->edp, dev, encoder);
+       if (rc) {
+               DPU_ERROR("modeset_init failed for eDP, rc = %d\n", rc);
+               drm_encoder_cleanup(encoder);
+               return rc;
+       }
+
+       priv->encoders[priv->num_encoders++] = encoder;
+       return rc;
+}
+
 static int _dpu_kms_initialize_displayport(struct drm_device *dev,
                                            struct msm_drm_private *priv,
                                            struct dpu_kms *dpu_kms)
@@ -546,6 +573,12 @@ static int _dpu_kms_setup_displays(struct drm_device *dev,
                return rc;
        }
 
+       rc = _dpu_kms_initialize_edp(dev, priv, dpu_kms);
+       if (rc) {
+               DPU_ERROR("initialize_eDP failed, rc = %d\n", rc);
+               return rc;
+       }
+
        rc = _dpu_kms_initialize_displayport(dev, priv, dpu_kms);
        if (rc) {
                DPU_ERROR("initialize_DP failed, rc = %d\n", rc);
-- 
The Qualcomm Innovatin Center, Inc. is a member of the Code Aurora Forum, a 
Linux Foundation Collaborative Project

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