hwc: Support enumeration of display attributes

Basic implementation of HWC 1.1 callbacks for display discovery.
Only primary LCD display is supported.

Change-Id: I6c48378f520887c143b2a6e03db5b4ab7322cb71
Signed-off-by: Mykola Ostrovskyy <mykola@ti.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/hwc/display.h b/hwc/display.h
new file mode 100644
index 0000000..f24fc41
--- /dev/null
+++ b/hwc/display.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) Texas Instruments - http://www.ti.com/
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __DISPLAY__
+#define __DISPLAY__
+
+#include <stdint.h>
+
+#define MAX_DISPLAYS 3
+#define MAX_DISPLAY_CONFIGS 32
+
+struct display_config {
+    int xres;
+    int yres;
+    int fps;
+    int xdpi;
+    int ydpi;
+};
+typedef struct display_config display_config_t;
+
+struct display {
+    uint32_t num_configs;
+    display_config_t *configs;
+    uint32_t active_config_ix;
+};
+typedef struct display display_t;
+
+typedef struct omap_hwc_device omap_hwc_device_t;
+
+int init_primary_display(omap_hwc_device_t *hwc_dev);
+int get_display_configs(omap_hwc_device_t *hwc_dev, int disp, uint32_t *configs, size_t *numConfigs);
+int get_display_attributes(omap_hwc_device_t *hwc_dev, int disp, uint32_t config, const uint32_t *attributes, int32_t *values);
+void free_displays(omap_hwc_device_t *hwc_dev);
+
+#endif