commit 05d75511ac4d072593bdbcc41fd7af262ddeee6d
author Lloyd Atkinson <latkinso@codeaurora.org> Tue Jan 17 14:45:51 2017 -0500
committer Lloyd Atkinson <latkinso@codeaurora.org> Thu Apr 13 08:09:13 2017 -0700
tree 9ca9110a2fed2635e30224c4c3f27c4f74267e46
parent fb8f000f7bb4ae0c481dd926276dd9797171137f

drm/msm/sde: add sde_connector kickoff trigger callbacks

Add a callback into the connector framework to allow sending
per-frame parameters at kickoff time. Specifically, this is
needed to support the partial update feature where only a subset
region of interest is updated on the display.

Change-Id: I4a6982a33110e5b114a60b92926d43c8aced950d
Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org>

drivers/gpu/drm/msm/sde/sde_connector.c

diff --git a/drivers/gpu/drm/msm/sde/sde_connector.c b/drivers/gpu/drm/msm/sde/sde_connector.c
index 1f39180..6e793d9 100644
--- a/drivers/gpu/drm/msm/sde/sde_connector.c
+++ b/drivers/gpu/drm/msm/sde/sde_connector.c
@@ -215,6 +215,38 @@
 	return c_conn->ops.get_info(info, c_conn->display);
 }
 
+int sde_connector_pre_kickoff(struct drm_connector *connector)
+{
+	struct sde_connector *c_conn;
+	struct sde_connector_state *c_state;
+	struct msm_display_kickoff_params params;
+	int rc;
+
+	if (!connector) {
+		SDE_ERROR("invalid argument\n");
+		return -EINVAL;
+	}
+
+	c_conn = to_sde_connector(connector);
+	c_state = to_sde_connector_state(connector->state);
+
+	if (!c_conn->display) {
+		SDE_ERROR("invalid argument\n");
+		return -EINVAL;
+	}
+
+	if (!c_conn->ops.pre_kickoff)
+		return 0;
+
+	params.rois = &c_state->rois;
+
+	SDE_EVT32_VERBOSE(connector->base.id);
+
+	rc = c_conn->ops.pre_kickoff(connector, c_conn->display, &params);
+
+	return rc;
+}
+
 static void sde_connector_destroy(struct drm_connector *connector)
 {
 	struct sde_connector *c_conn;