From 1bc471ebf1c85cf78f1862f5596a76f051e7112d Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Tue, 24 Sep 2013 00:46:25 +0300
Subject: [PATCH] pandora: add tv layer selection helper

---
 pandora/plat.c | 36 ++++++++++++++++++++++++++++++++++++
 plat.h         |  9 +++++++++
 2 files changed, 45 insertions(+)

diff --git a/pandora/plat.c b/pandora/plat.c
index 26ec297..fbb670c 100644
--- a/pandora/plat.c
+++ b/pandora/plat.c
@@ -204,6 +204,41 @@ static int gamma_set(int val, int black_level)
 	return do_system(buf);
 }
 
+/* For now, this only switches tv-out to appropriate fb.
+ * Maybe this could control actual layers too? */
+static int switch_layer(int which, int enable)
+{
+	static int was_ovl_enabled = -1;
+	int tv_enabled = 0;
+	char buf[128];
+	int ret;
+
+	if (which != 1)
+		return -1;
+	if (enable == was_ovl_enabled)
+		return 0;
+
+	was_ovl_enabled = -1;
+
+	tv_enabled = read_int_from_file(
+		   "/sys/devices/platform/omapdss/display1/enabled");
+	if (tv_enabled < 0)
+		return -1;
+
+	if (!tv_enabled) {
+		// tv-out not enabled
+		return 0;
+	}
+
+	snprintf(buf, sizeof(buf), "%s/op_tvout.sh -l %d",
+		 pnd_script_base, enable);
+	ret = do_system(buf);
+	if (ret == 0)
+		was_ovl_enabled = enable;
+
+	return ret;
+}
+
 struct plat_target plat_target = {
 	cpu_clock_get,
 	cpu_clock_set,
@@ -211,6 +246,7 @@ struct plat_target plat_target = {
 	hwfilter_set,
 	lcdrate_set,
 	gamma_set,
+	.switch_layer = switch_layer,
 };
 
 int plat_target_init(void)
diff --git a/plat.h b/plat.h
index 78dedf3..ad26595 100644
--- a/plat.h
+++ b/plat.h
@@ -16,6 +16,7 @@ struct plat_target {
 	int (*lcdrate_set)(int is_pal);
 	int (*gamma_set)(int val, int black_level);
 	int (*step_volume)(int *volume, int diff);
+	int (*switch_layer)(int which, int enable);
 	const char **vout_methods;
 	int vout_method;
 	int vout_fullscreen;
@@ -83,6 +84,14 @@ static __inline int plat_target_step_volume(int *volume, int diff)
 	return -1;
 }
 
+/* switch device graphics layers/overlays */
+static __inline int plat_target_switch_layer(int which, int enable)
+{
+	if (plat_target.switch_layer)
+		return plat_target.switch_layer(which, enable);
+	return -1;
+}
+
 /* menu: enter (switch bpp, etc), begin/end drawing */
 void plat_video_menu_enter(int is_rom_loaded);
 void plat_video_menu_begin(void);
-- 
2.39.2