mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2012 Samsung Electronics
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* R. Chandrasekar < rcsekar@samsung.com>
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*/
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#ifndef __SOUND_H__
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#define __SOUND_H__
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/* sound codec enum */
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enum en_sound_codec {
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CODEC_WM_8994,
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CODEC_WM_8995,
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CODEC_MAX_98095,
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CODEC_MAX
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};
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/* sound codec enum */
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enum sound_compat {
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AUDIO_COMPAT_SPI,
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AUDIO_COMPAT_I2C,
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};
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/* Codec information structure to store the info from device tree */
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struct sound_codec_info {
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int i2c_bus;
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int i2c_dev_addr;
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enum en_sound_codec codec_type;
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};
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/*
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* Generates square wave sound data for 1 second
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*
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* @param data data buffer pointer
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* @param size size of the buffer
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* @param freq frequency of the wave
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*/
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void sound_create_square_wave(unsigned short *data, int size, uint32_t freq);
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/*
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* Initialises audio sub system
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* @param blob Pointer of device tree node or NULL if none.
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* @return int value 0 for success, -1 for error
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*/
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int sound_init(const void *blob);
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/*
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* plays the pcm data buffer in pcm_data.h through i2s1 to make the
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* sine wave sound
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*
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* @return int 0 for success, -1 for error
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*/
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int sound_play(uint32_t msec, uint32_t frequency);
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#endif /* __SOUND__H__ */
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