mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-12 13:13:44 +09:00
282e29eb47
Update sandbox's device tree and config to use driver model for sound. Use the double buffer for sound output so that we don't need to wait for the sound to complete before returning. Signed-off-by: Simon Glass <sjg@chromium.org>
126 lines
2.7 KiB
C
126 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2013 Google, Inc
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*/
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#ifndef __SANDBOX_SDL_H
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#define __SANDBOX_SDL_H
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#include <errno.h>
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#ifdef CONFIG_SANDBOX_SDL
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/**
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* sandbox_sdl_init_display() - Set up SDL video ready for use
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*
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* @width: Window width in pixels
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* @height Window height in pixels
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* @log2_bpp: Log to base 2 of the number of bits per pixel. So a 32bpp
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* display will pass 5, since 2*5 = 32
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* @return 0 if OK, -ENODEV if no device, -EIO if SDL failed to initialize
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* and -EPERM if the video failed to come up.
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*/
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int sandbox_sdl_init_display(int width, int height, int log2_bpp);
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/**
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* sandbox_sdl_sync() - Sync current U-Boot LCD frame buffer to SDL
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*
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* This must be called periodically to update the screen for SDL so that the
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* user can see it.
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*
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* @lcd_base: Base of frame buffer
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* @return 0 if screen was updated, -ENODEV is there is no screen.
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*/
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int sandbox_sdl_sync(void *lcd_base);
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/**
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* sandbox_sdl_scan_keys() - scan for pressed keys
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*
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* Works out which keys are pressed and returns a list
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*
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* @key: Array to receive keycodes
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* @max_keys: Size of array
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* @return number of keycodes found, 0 if none, -ENODEV if no keyboard
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*/
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int sandbox_sdl_scan_keys(int key[], int max_keys);
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/**
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* sandbox_sdl_key_pressed() - check if a particular key is pressed
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*
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* @keycode: Keycode to check (KEY_... - see include/linux/input.h
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* @return 0 if pressed, -ENOENT if not pressed. -ENODEV if keybord not
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* available,
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*/
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int sandbox_sdl_key_pressed(int keycode);
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/**
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* sandbox_sdl_sound_start() - start playing a sound
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*
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* @frequency: Frequency of sounds in Hertz
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* @return 0 if OK, -ENODEV if no sound is available
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*/
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int sandbox_sdl_sound_start(uint frequency);
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/**
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* sandbox_sdl_sound_stop() - stop playing a sound
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*
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* @return 0 if OK, -ENODEV if no sound is available
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*/
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int sandbox_sdl_sound_stop(void);
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/**
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* sandbox_sdl_sound_play() - Play a sound
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*
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* @data: Data to play (typically 16-bit)
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* @count: Number of bytes in data
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*/
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int sandbox_sdl_sound_play(const void *data, uint count);
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/**
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* sandbox_sdl_sound_init() - set up the sound system
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*
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* @return 0 if OK, -ENODEV if no sound is available
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*/
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int sandbox_sdl_sound_init(void);
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#else
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static inline int sandbox_sdl_init_display(int width, int height,
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int log2_bpp)
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{
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return -ENODEV;
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}
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static inline int sandbox_sdl_sync(void *lcd_base)
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{
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return -ENODEV;
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}
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static inline int sandbox_sdl_scan_keys(int key[], int max_keys)
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{
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return -ENODEV;
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}
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static inline int sandbox_sdl_key_pressed(int keycode)
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{
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return -ENODEV;
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}
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static inline int sandbox_sdl_sound_start(uint frequency)
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{
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return -ENODEV;
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}
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static inline int sandbox_sdl_sound_stop(void)
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{
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return -ENODEV;
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}
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static inline int sandbox_sdl_sound_init(void)
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{
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return -ENODEV;
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}
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#endif
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#endif
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