/*
 * sound/soc/sprd/dai/i2s/i2s.h
 *
 * SPRD SoC CPU-DAI -- SpreadTrum SOC DAI i2s.
 *
 * Copyright (C) 2012 SpreadTrum Ltd.
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */
#ifndef __I2S_H
#define __I2S_H

#include <soc/sprd/sprd-audio.h>
#include <linux/string.h>
#include <linux/io.h>
#include <sound/info.h>
#include <sound/core.h>
#include <sound/soc.h>


#define I2S_VERSION	"i2s.r0p0"

#define I2S_MAGIC_ID		(0x124)

/* bus_type */
#define I2S_BUS 0
#define PCM_BUS 1

/* byte_per_chan */
#define I2S_BPCH_8 0
#define I2S_BPCH_16 1
#define I2S_BPCH_32 2

/* mode */
#define I2S_MASTER 0
#define I2S_SLAVE 1

/* lsb */
#define I2S_MSB 0
#define I2S_LSB 1

/* rtx_mode */
#define I2S_RTX_DIS 0
#define I2S_RX_MODE 1
#define I2S_TX_MODE 2
#define I2S_RTX_MODE 3

/* sync_mode */
#define I2S_LRCK 0
#define I2S_SYNC 1

/* lrck_inv */
#define I2S_L_LEFT 0
#define I2S_L_RIGTH 1

/* clk_inv */
#define I2S_CLK_N 0
#define I2S_CLK_R 1

/* i2s_bus_mode */
#define I2S_MSBJUSTFIED 0
#define I2S_COMPATIBLE 1

/* pcm_bus_mode */
#define I2S_LONG_FRAME 0
#define I2S_SHORT_FRAME 1

struct i2s_config {
	u32 hw_port;
	u32 fs;
	u32 slave_timeout;
	u32 bus_type:1;
	u32 byte_per_chan:2;
	u32 mode:1;
	u32 lsb:1;
	u32 rtx_mode:2;
	u32 sync_mode:1;
	u32 lrck_inv:1;
	u32 clk_inv:2;
	u32 i2s_bus_mode:1;
	u32 pcm_bus_mode:1;
	u32 pcm_slot:3;
	u16 pcm_cycle;
	u16 tx_watermark;
	u16 rx_watermark;
};

/* -------------------------- */
#define I2S_FIFO_DEPTH 32

/**********i2s-debug*********/
#define SAMPLATE_MIN 8000
#define SAMPLATE_MAX 96000


#define FUN_REG(f) ((unsigned short)(-((f) + 1)))
enum {
	FS = 0,
	HW_PROT,
	SLAVE_TIMEOUT,
	BUS_TYPE,
	BYTE_PER_CHAN,
	MODE,
	LSB,
	TRX_MODE,
	LRCK_INV,
	SYNC_MODE,
	CLK_INV,
	I2S_BUS_MODE,
	PCM_BUS_MODE,
	PCM_SLOT,
	PCM_CYCLE,
	TX_WATERMARK,
	RX_WATERMARK,
	I2S_CONFIG_MAX
};
void i2s_debug_write(struct snd_info_entry *entry,
			struct snd_info_buffer *buffer);
void i2s_debug_read(struct snd_info_entry *entry,
			struct snd_info_buffer *buffer);
void i2s_register_proc_read(struct snd_info_entry *entry,
			struct snd_info_buffer *buffer);
int i2s_config_get(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol);
int i2s_config_set(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol);

#endif /* __I2S_H */