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

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Message-Id: <1620283595-30471-4-git-send-email-sbillaka@codeaurora.org>
Date:   Thu,  6 May 2021 12:16:35 +0530
From:   Sankeerth Billakanti <sbillaka@...eaurora.org>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:     Sankeerth Billakanti <sbillaka@...eaurora.org>,
        robdclark@...il.com, seanpaul@...omium.org, swboyd@...omium.org,
        kalyan_t@...eaurora.org, abhinavk@...eaurora.org,
        dianders@...omium.org, khsieh@...eaurora.org,
        mkrishn@...eaurora.org
Subject: [PATCH v1 3/3] drm/msm/disp/dpu1: add support for edp encoder

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

Signed-off-by: Sankeerth Billakanti <sbillaka@...eaurora.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);
-- 
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