From 49ae83276a0a7e1351cedd27a1d7f7cc72ed52a0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tapani=20P=C3=A4lli?= <tapani.palli@intel.com>
Date: Fri, 31 Aug 2012 12:54:45 +0300
Subject: gralloc: introduce planeresources
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maintain planeresources and additional helper structure
gralloc_drm_plane_t for planes, also prints out plane formats on startup.

Change-Id: Ibc717d646acd581b8c247c22d269260e78d92fd9
Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
---
 gralloc_drm_kms.c  | 39 +++++++++++++++++++++++++++++++++++++++
 gralloc_drm_priv.h |  8 ++++++++
 2 files changed, 47 insertions(+)

diff --git a/gralloc_drm_kms.c b/gralloc_drm_kms.c
index 4664ecb..2d9bca1 100644
--- a/gralloc_drm_kms.c
+++ b/gralloc_drm_kms.c
@@ -563,6 +563,32 @@ int gralloc_drm_init_kms(struct gralloc_drm_t *drm)
 		return -EINVAL;
 	}
 
+	drm->plane_resources = drmModeGetPlaneResources(drm->fd);
+	if (!drm->plane_resources) {
+		ALOGD("no planes found from drm resources");
+	} else {
+		ALOGD("supported drm planes and formats");
+		/* fill a helper structure for hwcomposer */
+		drm->planes = calloc(drm->plane_resources->count_planes,
+			sizeof(struct gralloc_drm_plane_t));
+
+		for (i = 0; i < drm->plane_resources->count_planes; i++) {
+
+			unsigned int j;
+
+			drm->planes[i].drm_plane = drmModeGetPlane(drm->fd,
+				drm->plane_resources->planes[i]);
+
+			ALOGD("plane id %d", drm->planes[i].drm_plane->plane_id);
+			for (j = 0; j < drm->planes[i].drm_plane->count_formats; j++)
+				ALOGD("    format %c%c%c%c",
+					(drm->planes[i].drm_plane->formats[j]),
+					(drm->planes[i].drm_plane->formats[j])>>8,
+					(drm->planes[i].drm_plane->formats[j])>>16,
+					(drm->planes[i].drm_plane->formats[j])>>24);
+		}
+	}
+
 	/* find the crtc/connector/mode to use */
 	for (i = 0; i < drm->resources->count_connectors; i++) {
 		drmModeConnectorPtr connector;
@@ -620,6 +646,19 @@ void gralloc_drm_fini_kms(struct gralloc_drm_t *drm)
 		drm->resources = NULL;
 	}
 
+	if (drm->planes) {
+		unsigned int i;
+		for (i = 0; i < drm->plane_resources->count_planes; i++)
+			drmModeFreePlane(drm->planes[i].drm_plane);
+		free(drm->planes);
+		drm->planes = NULL;
+	}
+
+	if (drm->plane_resources) {
+		drmModeFreePlaneResources(drm->plane_resources);
+		drm->plane_resources = NULL;
+	}
+
 	drm_singleton = NULL;
 }
 
diff --git a/gralloc_drm_priv.h b/gralloc_drm_priv.h
index 33f688d..d22fea0 100644
--- a/gralloc_drm_priv.h
+++ b/gralloc_drm_priv.h
@@ -37,6 +37,10 @@ enum drm_swap_mode {
 	DRM_SWAP_SETCRTC,
 };
 
+struct gralloc_drm_plane_t {
+	drmModePlane *drm_plane;
+};
+
 struct gralloc_drm_t {
 	/* initialized by gralloc_drm_create */
 	int fd;
@@ -66,6 +70,10 @@ struct gralloc_drm_t {
 	struct gralloc_drm_bo_t *current_front, *next_front;
 	int waiting_flip;
 	unsigned int last_swap;
+
+	/* plane support */
+	drmModePlaneResPtr plane_resources;
+	struct gralloc_drm_plane_t *planes;
 };
 
 struct gralloc_drm_drv_t {
-- 
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