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From:   Kalyan Thota <quic_kalyant@quicinc.com>
To:     dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org,
        freedreno@lists.freedesktop.org, devicetree@vger.kernel.org
Cc:     Kalyan Thota <quic_kalyant@quicinc.com>,
        linux-kernel@vger.kernel.org, robdclark@chromium.org,
        dianders@chromium.org, swboyd@chromium.org,
        quic_vpolimer@quicinc.com, dmitry.baryshkov@linaro.org,
        quic_abhinavk@quicinc.com
Subject: [v1] drm/msm/disp/dpu1: populate disp_info with connector type
Date:   Fri, 11 Nov 2022 05:56:59 -0800
Message-Id: <1668175019-10960-1-git-send-email-quic_kalyant@quicinc.com>
Precedence: bulk

Populate disp_info with connector type. Since DRM encoder type
for few encoders can be similar (like eDP and DP) this information
will be useful to differentiate interfaces.

Changes in v1:
- add connector type in the disp_info (Dmitry)
- add helper functions to know encoder type
- update commit text reflecting the change

Signed-off-by: Kalyan Thota <quic_kalyant@quicinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 44 +++++++++++++++++++++++++++--
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 26 +++++++++++++++--
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c     |  2 ++
 drivers/gpu/drm/msm/dp/dp_display.c         |  5 ++++
 drivers/gpu/drm/msm/msm_drv.h               |  7 ++++-
 5 files changed, 77 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 9c6817b..c9058aa 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -217,6 +217,40 @@ static u32 dither_matrix[DITHER_MATRIX_SZ] = {
 	15, 7, 13, 5, 3, 11, 1, 9, 12, 4, 14, 6, 0, 8, 2, 10
 };
 
+bool dpu_encoder_is_external(struct drm_encoder *drm_enc)
+{
+	struct dpu_encoder_virt *dpu_enc;
+
+	if (!drm_enc)
+		return false;
+
+	dpu_enc = to_dpu_encoder_virt(drm_enc);
+	return (dpu_enc->disp_info.connector_type ==
+			DRM_MODE_CONNECTOR_DisplayPort);
+}
+
+bool dpu_encoder_is_virtual(struct drm_encoder *drm_enc)
+{
+	struct dpu_encoder_virt *dpu_enc;
+
+	if (!drm_enc)
+		return false;
+
+	dpu_enc = to_dpu_encoder_virt(drm_enc);
+	return (dpu_enc->disp_info.connector_type == DRM_MODE_CONNECTOR_WRITEBACK);
+}
+
+bool dpu_encoder_is_primary(struct drm_encoder *drm_enc)
+{
+	struct dpu_encoder_virt *dpu_enc;
+
+	if (!drm_enc)
+		return false;
+
+	dpu_enc = to_dpu_encoder_virt(drm_enc);
+	return((dpu_enc->disp_info.connector_type == DRM_MODE_CONNECTOR_DSI) ||
+		(dpu_enc->disp_info.connector_type == DRM_MODE_CONNECTOR_eDP));
+}
 
 bool dpu_encoder_is_widebus_enabled(const struct drm_encoder *drm_enc)
 {
@@ -2412,7 +2446,7 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
 	struct dpu_kms *dpu_kms = to_dpu_kms(priv->kms);
 	struct drm_encoder *drm_enc = NULL;
 	struct dpu_encoder_virt *dpu_enc = NULL;
-	int ret = 0;
+	int ret = 0, intf_i;
 
 	dpu_enc = to_dpu_encoder_virt(enc);
 
@@ -2424,13 +2458,17 @@ int dpu_encoder_setup(struct drm_device *dev, struct drm_encoder *enc,
 	timer_setup(&dpu_enc->frame_done_timer,
 			dpu_encoder_frame_done_timeout, 0);
 
+	intf_i = disp_info->h_tile_instance[0];
 	if (disp_info->intf_type == DRM_MODE_ENCODER_DSI)
 		timer_setup(&dpu_enc->vsync_event_timer,
 				dpu_encoder_vsync_event_handler,
 				0);
-	else if (disp_info->intf_type == DRM_MODE_ENCODER_TMDS)
+	else if (disp_info->intf_type == DRM_MODE_ENCODER_TMDS) {
 		dpu_enc->wide_bus_en = msm_dp_wide_bus_available(
-				priv->dp[disp_info->h_tile_instance[0]]);
+				priv->dp[intf_i]);
+		disp_info->connector_type =
+			msm_dp_get_connector_type(priv->dp[intf_i]);
+	}
 
 	INIT_DELAYED_WORK(&dpu_enc->delayed_off_work,
 			dpu_encoder_off_work);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index 9e7236e..d361c5d 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -25,16 +25,18 @@
  * @num_of_h_tiles:     Number of horizontal tiles in case of split interface
  * @h_tile_instance:    Controller instance used per tile. Number of elements is
  *                      based on num_of_h_tiles
- * @is_cmd_mode		Boolean to indicate if the CMD mode is requested
+ * @is_cmd_mode:        Boolean to indicate if the CMD mode is requested
+ * @connector_type:     DRM_MODE_CONNECTOR_ type
  * @is_te_using_watchdog_timer:  Boolean to indicate watchdog TE is
- *				 used instead of panel TE in cmd mode panels
- * @dsc:		DSC configuration data for DSC-enabled displays
+ *                      used instead of panel TE in cmd mode panels
+ * @dsc:                DSC configuration data for DSC-enabled displays
  */
 struct msm_display_info {
 	int intf_type;
 	uint32_t num_of_h_tiles;
 	uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY];
 	bool is_cmd_mode;
+	int connector_type;
 	bool is_te_using_watchdog_timer;
 	struct drm_dsc_config *dsc;
 };
@@ -224,4 +226,22 @@ void dpu_encoder_cleanup_wb_job(struct drm_encoder *drm_enc,
  */
 bool dpu_encoder_is_valid_for_commit(struct drm_encoder *drm_enc);
 
+/**
+* dpu_encoder_is_external - find if the encoder is of type DP
+* @drm_enc:    Pointer to previously created drm encoder structure
+*/
+bool dpu_encoder_is_external(struct drm_encoder *drm_enc);
+
+/**
+* dpu_encoder_is_virtual - find if the encoder is of type Writeback
+* @drm_enc:    Pointer to previously created drm encoder structure
+*/
+bool dpu_encoder_is_virtual(struct drm_encoder *drm_enc);
+
+/**
+* dpu_encoder_is_primary - find if the encoder is of type DSI or eDP
+* @drm_enc:    Pointer to previously created drm encoder structure
+*/
+bool dpu_encoder_is_primary(struct drm_encoder *drm_enc);
+
 #endif /* __DPU_ENCODER_H__ */
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 0d94eec0d..0709da2 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -574,6 +574,7 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
 
 		memset(&info, 0, sizeof(info));
 		info.intf_type = encoder->encoder_type;
+		info.connector_type = DRM_MODE_CONNECTOR_DSI;
 
 		rc = msm_dsi_modeset_init(priv->dsi[i], dev, encoder);
 		if (rc) {
@@ -676,6 +677,7 @@ static int _dpu_kms_initialize_writeback(struct drm_device *dev,
 	/* use only WB idx 2 instance for DPU */
 	info.h_tile_instance[0] = WB_2;
 	info.intf_type = encoder->encoder_type;
+	info.connector_type = DRM_MODE_CONNECTOR_WRITEBACK;
 
 	rc = dpu_encoder_setup(dev, encoder, &info);
 	if (rc) {
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index bfd0aef..53f65dd 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1509,6 +1509,11 @@ bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
 	return dp->wide_bus_en;
 }
 
+int msm_dp_get_connector_type(const struct msm_dp *dp_display)
+{
+	return dp_display->connector_type;
+}
+
 void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor)
 {
 	struct dp_display_private *dp;
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index ea80846..2ecba6f 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -331,7 +331,7 @@ void msm_dp_snapshot(struct msm_disp_state *disp_state, struct msm_dp *dp_displa
 
 void msm_dp_debugfs_init(struct msm_dp *dp_display, struct drm_minor *minor);
 bool msm_dp_wide_bus_available(const struct msm_dp *dp_display);
-
+int msm_dp_get_connector_type(const struct msm_dp *dp_display);
 #else
 static inline int __init msm_dp_register(void)
 {
@@ -365,6 +365,11 @@ static inline bool msm_dp_wide_bus_available(const struct msm_dp *dp_display)
 	return false;
 }
 
+static inline int msm_dp_get_connector_type(const struct msm_dp *dp_display)
+{
+	return 0;
+}
+
 #endif
 
 #ifdef CONFIG_DRM_MSM_MDP4
-- 
2.7.4