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https://github.com/edk2-porting/linux-next.git
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7d4d443eb4
Added rt5677_spi_read() and refactored rt5677_spi_write() so that an arbitrary block in the DSP address space can be read/written via SPI. For example, this allows us to load an ELF DSP firmware with sparse sections, and stream audio samples from DSP ring buffer. Signed-off-by: Ben Zhang <benzh@chromium.org> Acked-by: Oder Chiou <oder_chiou@realtek.com> Signed-off-by: Mark Brown <broonie@kernel.org>
20 lines
619 B
C
20 lines
619 B
C
/*
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* rt5677-spi.h -- RT5677 ALSA SoC audio codec driver
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*
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* Copyright 2013 Realtek Semiconductor Corp.
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* Author: Oder Chiou <oder_chiou@realtek.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __RT5677_SPI_H__
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#define __RT5677_SPI_H__
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int rt5677_spi_read(u32 addr, void *rxbuf, size_t len);
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int rt5677_spi_write(u32 addr, const void *txbuf, size_t len);
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int rt5677_spi_write_firmware(u32 addr, const struct firmware *fw);
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#endif /* __RT5677_SPI_H__ */
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