1 files changed, 118 insertions, 0 deletions
diff --git a/arch/sandbox/include/asm/sdl.h b/arch/sandbox/include/asm/sdl.h
new file mode 100644
index 0000000..6edec1a
--- /dev/null
+++ b/arch/sandbox/include/asm/sdl.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2013 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __SANDBOX_SDL_H
+#define __SANDBOX_SDL_H
+
+#include <errno.h>
+
+#ifdef CONFIG_SANDBOX_SDL
+
+/**
+ * sandbox_sdl_init_display() - Set up SDL video ready for use
+ *
+ * @width:	Window width in pixels
+ * @height	Window height in pixels
+ * @log2_bpp:	Log to base 2 of the number of bits per pixel. So a 32bpp
+ *		display will pass 5, since 2*5 = 32
+ * @return 0 if OK, -ENODEV if no device, -EIO if SDL failed to initialize
+ *		and -EPERM if the video failed to come up.
+ */
+int sandbox_sdl_init_display(int width, int height, int log2_bpp);
+
+/**
+ * sandbox_sdl_sync() - Sync current U-Boot LCD frame buffer to SDL
+ *
+ * This must be called periodically to update the screen for SDL so that the
+ * user can see it.
+ *
+ * @lcd_base: Base of frame buffer
+ * @return 0 if screen was updated, -ENODEV is there is no screen.
+ */
+int sandbox_sdl_sync(void *lcd_base);
+
+/**
+ * sandbox_sdl_scan_keys() - scan for pressed keys
+ *
+ * Works out which keys are pressed and returns a list
+ *
+ * @key:	Array to receive keycodes
+ * @max_keys:	Size of array
+ * @return number of keycodes found, 0 if none, -ENODEV if no keyboard
+ */
+int sandbox_sdl_scan_keys(int key[], int max_keys);
+
+/**
+ * sandbox_sdl_key_pressed() - check if a particular key is pressed
+ *
+ * @keycode:	Keycode to check (KEY_... - see include/linux/input.h
+ * @return 0 if pressed, -ENOENT if not pressed. -ENODEV if keybord not
+ * available,
+ */
+int sandbox_sdl_key_pressed(int keycode);
+
+/**
+ * sandbox_sdl_sound_start() - start playing a sound
+ *
+ * @frequency:	Frequency of sounds in Hertz
+ * @return 0 if OK, -ENODEV if no sound is available
+ */
+int sandbox_sdl_sound_start(uint frequency);
+
+/**
+ * sandbox_sdl_sound_stop() - stop playing a sound
+ *
+ * @return 0 if OK, -ENODEV if no sound is available
+ */
+int sandbox_sdl_sound_stop(void);
+
+/**
+ * sandbox_sdl_sound_init() - set up the sound system
+ *
+ * @return 0 if OK, -ENODEV if no sound is available
+ */
+int sandbox_sdl_sound_init(void);
+
+#else
+static inline int sandbox_sdl_init_display(int width, int height,
+					    int log2_bpp)
+{
+	return -ENODEV;
+}
+
+static inline int sandbox_sdl_sync(void *lcd_base)
+{
+	return -ENODEV;
+}
+
+static inline int sandbox_sdl_scan_keys(int key[], int max_keys)
+{
+	return -ENODEV;
+}
+
+static inline int sandbox_sdl_key_pressed(int keycode)
+{
+	return -ENODEV;
+}
+
+static inline int sandbox_sdl_sound_start(uint frequency)
+{
+	return -ENODEV;
+}
+
+static inline int sandbox_sdl_sound_stop(void)
+{
+	return -ENODEV;
+}
+
+static inline int sandbox_sdl_sound_init(void)
+{
+	return -ENODEV;
+}
+
+#endif
+
+#endif