diff options
| author | Oder Chiou <oder_chiou@realtek.com> | 2016-06-06 18:33:31 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-06-07 16:22:31 +0100 |
| commit | 6eebf35b0e4a02248f7dba5d1719c6896afe41ba (patch) | |
| tree | 9bc744792d910a4cb499d1d5bd1c0b1bc3206d7a /sound/soc/codecs/rt5514-spi.h | |
| parent | 1a695a905c18548062509178b98bc91e67510864 (diff) | |
| download | linux-6eebf35b0e4a02248f7dba5d1719c6896afe41ba.tar.bz2 | |
ASoC: rt5514: add rt5514 SPI driver
The device has multiple control interfaces, I2C and SPI. The I2C interface
mainly controls the register settings of codec. The SPI interface is in
order to provide the high speed transmission of data. For example, high
bandwidth memory read/write of DSP. The patch adds the rt5514 SPI driver
for loading the firmware of DSP and retrieving the voice data from DSP
after the system is waked up by specific voice.
Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/rt5514-spi.h')
| -rw-r--r-- | sound/soc/codecs/rt5514-spi.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt5514-spi.h b/sound/soc/codecs/rt5514-spi.h new file mode 100644 index 000000000000..f69b1cdf2f9b --- /dev/null +++ b/sound/soc/codecs/rt5514-spi.h @@ -0,0 +1,38 @@ +/* + * rt5514-spi.h -- RT5514 driver + * + * Copyright 2015 Realtek Semiconductor Corp. + * Author: Oder Chiou <oder_chiou@realtek.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __RT5514_SPI_H__ +#define __RT5514_SPI_H__ + +/** + * RT5514_SPI_BUF_LEN is the buffer size of SPI master controller. +*/ +#define RT5514_SPI_BUF_LEN 240 + +#define RT5514_BUFFER_VOICE_BASE 0x18001034 +#define RT5514_BUFFER_VOICE_LIMIT 0x18001038 +#define RT5514_BUFFER_VOICE_RP 0x1800103c +#define RT5514_BUFFER_VOICE_SIZE 0x18001040 + +/* SPI Command */ +enum { + RT5514_SPI_CMD_16_READ = 0, + RT5514_SPI_CMD_16_WRITE, + RT5514_SPI_CMD_32_READ, + RT5514_SPI_CMD_32_WRITE, + RT5514_SPI_CMD_BURST_READ, + RT5514_SPI_CMD_BURST_WRITE, +}; + +int rt5514_spi_burst_read(unsigned int addr, u8 *rxbuf, size_t len); +int rt5514_spi_burst_write(u32 addr, const u8 *txbuf, size_t len); + +#endif /* __RT5514_SPI_H__ */ |