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bbc09bf2 SG |
1 | /* |
2 | * Copyright (c) 2013 Google, Inc | |
3 | * | |
4 | * SPDX-License-Identifier: GPL-2.0+ | |
5 | */ | |
6 | ||
7 | #ifndef __SANDBOX_SDL_H | |
8 | #define __SANDBOX_SDL_H | |
9 | ||
10 | #include <errno.h> | |
11 | ||
12 | #ifdef CONFIG_SANDBOX_SDL | |
13 | ||
14 | /** | |
15 | * sandbox_sdl_init_display() - Set up SDL video ready for use | |
16 | * | |
17 | * @width: Window width in pixels | |
18 | * @height Window height in pixels | |
19 | * @log2_bpp: Log to base 2 of the number of bits per pixel. So a 32bpp | |
20 | * display will pass 5, since 2*5 = 32 | |
21 | * @return 0 if OK, -ENODEV if no device, -EIO if SDL failed to initialize | |
22 | * and -EPERM if the video failed to come up. | |
23 | */ | |
24 | int sandbox_sdl_init_display(int width, int height, int log2_bpp); | |
25 | ||
26 | /** | |
27 | * sandbox_sdl_sync() - Sync current U-Boot LCD frame buffer to SDL | |
28 | * | |
29 | * This must be called periodically to update the screen for SDL so that the | |
30 | * user can see it. | |
31 | * | |
32 | * @lcd_base: Base of frame buffer | |
33 | * @return 0 if screen was updated, -ENODEV is there is no screen. | |
34 | */ | |
35 | int sandbox_sdl_sync(void *lcd_base); | |
36 | ||
37 | /** | |
38 | * sandbox_sdl_scan_keys() - scan for pressed keys | |
39 | * | |
40 | * Works out which keys are pressed and returns a list | |
41 | * | |
42 | * @key: Array to receive keycodes | |
43 | * @max_keys: Size of array | |
44 | * @return number of keycodes found, 0 if none, -ENODEV if no keyboard | |
45 | */ | |
46 | int sandbox_sdl_scan_keys(int key[], int max_keys); | |
47 | ||
48 | /** | |
49 | * sandbox_sdl_key_pressed() - check if a particular key is pressed | |
50 | * | |
51 | * @keycode: Keycode to check (KEY_... - see include/linux/input.h | |
52 | * @return 0 if pressed, -ENOENT if not pressed. -ENODEV if keybord not | |
53 | * available, | |
54 | */ | |
55 | int sandbox_sdl_key_pressed(int keycode); | |
56 | ||
57 | /** | |
58 | * sandbox_sdl_sound_start() - start playing a sound | |
59 | * | |
60 | * @frequency: Frequency of sounds in Hertz | |
61 | * @return 0 if OK, -ENODEV if no sound is available | |
62 | */ | |
63 | int sandbox_sdl_sound_start(uint frequency); | |
64 | ||
65 | /** | |
66 | * sandbox_sdl_sound_stop() - stop playing a sound | |
67 | * | |
68 | * @return 0 if OK, -ENODEV if no sound is available | |
69 | */ | |
70 | int sandbox_sdl_sound_stop(void); | |
71 | ||
72 | /** | |
73 | * sandbox_sdl_sound_init() - set up the sound system | |
74 | * | |
75 | * @return 0 if OK, -ENODEV if no sound is available | |
76 | */ | |
77 | int sandbox_sdl_sound_init(void); | |
78 | ||
79 | #else | |
80 | static inline int sandbox_sdl_init_display(int width, int height, | |
81 | int log2_bpp) | |
82 | { | |
83 | return -ENODEV; | |
84 | } | |
85 | ||
86 | static inline int sandbox_sdl_sync(void *lcd_base) | |
87 | { | |
88 | return -ENODEV; | |
89 | } | |
90 | ||
91 | static inline int sandbox_sdl_scan_keys(int key[], int max_keys) | |
92 | { | |
93 | return -ENODEV; | |
94 | } | |
95 | ||
96 | static inline int sandbox_sdl_key_pressed(int keycode) | |
97 | { | |
98 | return -ENODEV; | |
99 | } | |
100 | ||
101 | static inline int sandbox_sdl_sound_start(uint frequency) | |
102 | { | |
103 | return -ENODEV; | |
104 | } | |
105 | ||
106 | static inline int sandbox_sdl_sound_stop(void) | |
107 | { | |
108 | return -ENODEV; | |
109 | } | |
110 | ||
111 | static inline int sandbox_sdl_sound_init(void) | |
112 | { | |
113 | return -ENODEV; | |
114 | } | |
115 | ||
116 | #endif | |
117 | ||
118 | #endif |