disp: msm: dp: change the detect callback to detect_ctx

The connector detect function is currently implemented as a
callback from the framework, and creates a context before
calling the detect_port_ctx MST callback. This change updates
the callflow so that the framework calls the new detect_ctx
function in the MST case. This removes the need for creating a
new context before calling further downstream functions.

In addition, references to the mst_connector_get_info
function were replaced by connector_get_info to avoid
redundancy.

Change-Id: I224d09e77fad4b6925a42b1bc912a05e3e4d060a
Signed-off-by: Sudarsan Ramesh <sudarame@codeaurora.org>

msm/dp/dp_display.c

@@ -816,16 +816,20 @@ static bool dp_display_send_hpd_event(struct dp_display_private *dp)
 	char name[HPD_STRING_SIZE], status[HPD_STRING_SIZE],
 		bpp[HPD_STRING_SIZE], pattern[HPD_STRING_SIZE];
 	char *envp[5];
+	struct dp_display *display;
 	int rc = 0;
 
 	connector = dp->dp_display.base_connector;
+	display = &dp->dp_display;
 
 	if (!connector) {
 		DP_ERR("connector not set\n");
 		return false;
 	}
 
-	connector->status = connector->funcs->detect(connector, false);
+	connector->status = display->is_sst_connected ? connector_status_connected :
+			connector_status_disconnected;
+
 	if (dp->cached_connector_status == connector->status) {
 		DP_DEBUG("connector status (%d) unchanged, skipping uevent\n",
 				dp->cached_connector_status);

msm/dp/dp_mst_drm.c

@@ -889,42 +889,33 @@ void dp_mst_drm_bridge_deinit(void *display)
 
 /* DP MST Connector OPs */
 
-static enum drm_connector_status
+static int
-dp_mst_connector_detect(struct drm_connector *connector, bool force,
+dp_mst_connector_detect(struct drm_connector *connector,
+		struct drm_modeset_acquire_ctx *ctx,
+		bool force,
 		void *display)
 {
 	struct sde_connector *c_conn = to_sde_connector(connector);
 	struct dp_display *dp_display = c_conn->display;
 	struct dp_mst_private *mst = dp_display->dp_mst_prv_info;
 	struct dp_panel *dp_panel;
-	struct drm_modeset_acquire_ctx ctx;
 	enum drm_connector_status status;
 
 	DP_MST_DEBUG("enter:\n");
 	SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY);
 
-	if (!c_conn->drv_panel || !c_conn->mst_port) {
-		DP_DEBUG("conn %d is invalid\n");
-		return connector_status_disconnected;
-	}
-
 	dp_panel = c_conn->drv_panel;
 
 	if (dp_panel->mst_hide)
 		return connector_status_disconnected;
 
-	drm_modeset_acquire_init(&ctx, 0);
-
 	status = mst->mst_fw_cbs->detect_port_ctx(connector,
-			&ctx, &mst->mst_mgr, c_conn->mst_port);
+			ctx, &mst->mst_mgr, c_conn->mst_port);
 
 	DP_MST_INFO("conn:%d status:%d\n", connector->base.id, status);
 	SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT, connector->base.id, status);
 
-	drm_modeset_drop_locks(&ctx);
+	return (int)status;
-	drm_modeset_acquire_fini(&ctx);
-
-	return status;
 }
 
 void dp_mst_clear_edid_cache(void *dp_display) {
@@ -1086,34 +1077,6 @@ enum drm_mode_status dp_mst_connector_mode_valid(
 	return dp_display->validate_mode(dp_display, dp_panel, mode, avail_res);
 }
 
-int dp_mst_connector_get_info(struct drm_connector *connector,
-		struct msm_display_info *info,
-		void *display)
-{
-	int rc;
-	enum drm_connector_status status = connector_status_unknown;
-
-	DP_MST_DEBUG("enter:\n");
-	SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_ENTRY, connector->base.id);
-
-	rc = dp_connector_get_info(connector, info, display);
-
-	if (!rc) {
-		status = dp_mst_connector_detect(connector, false, display);
-
-		if (status == connector_status_connected)
-			info->is_connected = true;
-		else
-			info->is_connected = false;
-	}
-
-	DP_MST_INFO("mst connector:%d status:%d, rc:%d\n",
-			connector->base.id, status, rc);
-	SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT, connector->base.id);
-
-	return rc;
-}
-
 int dp_mst_connector_get_mode_info(struct drm_connector *connector,
 		const struct drm_display_mode *drm_mode,
 		struct msm_sub_mode *sub_mode,
@@ -1399,10 +1362,10 @@ dp_mst_add_connector(struct drm_dp_mst_topology_mgr *mgr,
 {
 	static const struct sde_connector_ops dp_mst_connector_ops = {
 		.post_init  = dp_mst_connector_post_init,
-		.detect     = dp_mst_connector_detect,
+		.detect_ctx = dp_mst_connector_detect,
 		.get_modes  = dp_mst_connector_get_modes,
 		.mode_valid = dp_mst_connector_mode_valid,
-		.get_info   = dp_mst_connector_get_info,
+		.get_info   = dp_connector_get_info,
 		.get_mode_info  = dp_mst_connector_get_mode_info,
 		.atomic_best_encoder = dp_mst_atomic_best_encoder,
 		.atomic_check = dp_mst_connector_atomic_check,
@@ -1477,8 +1440,10 @@ dp_mst_add_connector(struct drm_dp_mst_topology_mgr *mgr,
 	return connector;
 }
 
-static enum drm_connector_status
+static int
-dp_mst_fixed_connector_detect(struct drm_connector *connector, bool force,
+dp_mst_fixed_connector_detect(struct drm_connector *connector, 
+			struct drm_modeset_acquire_ctx *ctx,
+			bool force,
 			void *display)
 {
 	struct dp_display *dp_display = display;
@@ -1492,10 +1457,10 @@ dp_mst_fixed_connector_detect(struct drm_connector *connector, bool force,
 		if (!mst->mst_bridge[i].fixed_port_added)
 			break;
 
-		return dp_mst_connector_detect(connector, force, display);
+		return dp_mst_connector_detect(connector, ctx, force, display);
 	}
 
-	return connector_status_disconnected;
+	return (int)connector_status_disconnected;
 }
 
 static struct drm_encoder *
@@ -1672,10 +1637,10 @@ dp_mst_drm_fixed_connector_init(struct dp_display *dp_display,
 {
 	static const struct sde_connector_ops dp_mst_connector_ops = {
 		.post_init  = dp_mst_connector_post_init,
-		.detect     = dp_mst_fixed_connector_detect,
+		.detect_ctx = dp_mst_fixed_connector_detect,
 		.get_modes  = dp_mst_connector_get_modes,
 		.mode_valid = dp_mst_connector_mode_valid,
-		.get_info   = dp_mst_connector_get_info,
+		.get_info   = dp_connector_get_info,
 		.get_mode_info  = dp_mst_connector_get_mode_info,
 		.atomic_best_encoder = dp_mst_fixed_atomic_best_encoder,
 		.atomic_check = dp_mst_connector_atomic_check,

msm/sde/sde_connector.c

@@ -1823,8 +1823,10 @@ static void sde_connector_update_colorspace(struct drm_connector *connector)
 		SDE_ERROR("failed to set colorspace property for connector\n");
 }
 
-static enum drm_connector_status
+static int
-sde_connector_detect(struct drm_connector *connector, bool force)
+sde_connector_detect_ctx(struct drm_connector *connector, 
+		struct drm_modeset_acquire_ctx *ctx,
+		bool force)
 {
 	enum drm_connector_status status = connector_status_unknown;
 	struct sde_connector *c_conn;
@@ -1836,12 +1838,14 @@ sde_connector_detect(struct drm_connector *connector, bool force)
 
 	c_conn = to_sde_connector(connector);
 
-	if (c_conn->ops.detect)
+	if (c_conn->ops.detect_ctx)
-		status = c_conn->ops.detect(connector,
+                status = c_conn->ops.detect_ctx(connector, ctx, force, c_conn->display);
-				force,
+        else if (c_conn->ops.detect)
-				c_conn->display);
+                status = c_conn->ops.detect(connector, force, c_conn->display);
 
-	return status;
+	SDE_DEBUG("connector id: %d, connection status: %d\n", connector->base.id, status);
+
+	return (int)status;
 }
 
 int sde_connector_get_dpms(struct drm_connector *connector)
@@ -2423,7 +2427,6 @@ static int sde_connector_fill_modes(struct drm_connector *connector,
 
 static const struct drm_connector_funcs sde_connector_ops = {
 	.reset =                  sde_connector_atomic_reset,
-	.detect =                 sde_connector_detect,
 	.destroy =                sde_connector_destroy,
 	.fill_modes =             sde_connector_fill_modes,
 	.atomic_duplicate_state = sde_connector_atomic_duplicate_state,
@@ -2689,6 +2692,7 @@ static void sde_connector_check_status_work(struct work_struct *work)
 
 static const struct drm_connector_helper_funcs sde_connector_helper_ops = {
 	.get_modes =    sde_connector_get_modes,
+	.detect_ctx =   sde_connector_detect_ctx,
 	.mode_valid =   sde_connector_mode_valid,
 	.best_encoder = sde_connector_best_encoder,
 	.atomic_check = sde_connector_atomic_check,
@@ -2696,6 +2700,7 @@ static const struct drm_connector_helper_funcs sde_connector_helper_ops = {
 
 static const struct drm_connector_helper_funcs sde_connector_helper_ops_v2 = {
 	.get_modes =    sde_connector_get_modes,
+	.detect_ctx =   sde_connector_detect_ctx,
 	.mode_valid =   sde_connector_mode_valid,
 	.best_encoder = sde_connector_best_encoder,
 	.atomic_best_encoder = sde_connector_atomic_best_encoder,

msm/sde/sde_connector.h

@@ -60,6 +60,19 @@ struct sde_connector_ops {
 			bool force,
 			void *display);
 
+	/**
+	 * detect_ctx - determine if connector is connected
+	 * @connector: Pointer to drm connector structure
+	 * @ctx: Pointer to drm modeset acquire context structure
+	 * @force: Force detect setting from drm framework
+	 * @display: Pointer to private display handle
+	 * Returns: Connector 'is connected' status
+	 */
+	int (*detect_ctx)(struct drm_connector *connector,
+			struct drm_modeset_acquire_ctx *ctx,
+			bool force,
+			void *display);
+
 	/**
 	 * get_modes - add drm modes via drm_mode_probed_add()
 	 * @connector: Pointer to drm connector structure