1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) 2013 Google, Inc 4 */ 5 6 #ifndef __SANDBOX_SDL_H 7 #define __SANDBOX_SDL_H 8 9 #include <errno.h> 10 11 #ifdef CONFIG_SANDBOX_SDL 12 13 /** 14 * sandbox_sdl_init_display() - Set up SDL video ready for use 15 * 16 * @width: Window width in pixels 17 * @height Window height in pixels 18 * @log2_bpp: Log to base 2 of the number of bits per pixel. So a 32bpp 19 * display will pass 5, since 2*5 = 32 20 * @return 0 if OK, -ENODEV if no device, -EIO if SDL failed to initialize 21 * and -EPERM if the video failed to come up. 22 */ 23 int sandbox_sdl_init_display(int width, int height, int log2_bpp); 24 25 /** 26 * sandbox_sdl_sync() - Sync current U-Boot LCD frame buffer to SDL 27 * 28 * This must be called periodically to update the screen for SDL so that the 29 * user can see it. 30 * 31 * @lcd_base: Base of frame buffer 32 * @return 0 if screen was updated, -ENODEV is there is no screen. 33 */ 34 int sandbox_sdl_sync(void *lcd_base); 35 36 /** 37 * sandbox_sdl_scan_keys() - scan for pressed keys 38 * 39 * Works out which keys are pressed and returns a list 40 * 41 * @key: Array to receive keycodes 42 * @max_keys: Size of array 43 * @return number of keycodes found, 0 if none, -ENODEV if no keyboard 44 */ 45 int sandbox_sdl_scan_keys(int key[], int max_keys); 46 47 /** 48 * sandbox_sdl_key_pressed() - check if a particular key is pressed 49 * 50 * @keycode: Keycode to check (KEY_... - see include/linux/input.h 51 * @return 0 if pressed, -ENOENT if not pressed. -ENODEV if keybord not 52 * available, 53 */ 54 int sandbox_sdl_key_pressed(int keycode); 55 56 /** 57 * sandbox_sdl_sound_play() - Play a sound 58 * 59 * @data: Data to play (typically 16-bit) 60 * @count: Number of bytes in data 61 */ 62 int sandbox_sdl_sound_play(const void *data, uint count); 63 64 /** 65 * sandbox_sdl_sound_stop() - stop playing a sound 66 * 67 * @return 0 if OK, -ENODEV if no sound is available 68 */ 69 int sandbox_sdl_sound_stop(void); 70 71 /** 72 * sandbox_sdl_sound_init() - set up the sound system 73 * 74 * @rate: Sample rate to use 75 * @channels: Number of channels to use (1=mono, 2=stereo) 76 * @return 0 if OK, -ENODEV if no sound is available 77 */ 78 int sandbox_sdl_sound_init(int rate, int channels); 79 80 #else 81 static inline int sandbox_sdl_init_display(int width, int height, 82 int log2_bpp) 83 { 84 return -ENODEV; 85 } 86 87 static inline int sandbox_sdl_sync(void *lcd_base) 88 { 89 return -ENODEV; 90 } 91 92 static inline int sandbox_sdl_scan_keys(int key[], int max_keys) 93 { 94 return -ENODEV; 95 } 96 97 static inline int sandbox_sdl_key_pressed(int keycode) 98 { 99 return -ENODEV; 100 } 101 102 static inline int sandbox_sdl_sound_start(uint frequency) 103 { 104 return -ENODEV; 105 } 106 107 int sandbox_sdl_sound_play(const void *data, uint count) 108 { 109 return -ENODEV; 110 } 111 112 static inline int sandbox_sdl_sound_stop(void) 113 { 114 return -ENODEV; 115 } 116 117 int sandbox_sdl_sound_init(int rate, int channels) 118 { 119 return -ENODEV; 120 } 121 122 #endif 123 124 #endif 125