sound/soc/codecs/aw8896.h

/*
 * aw8896.h   aw8896 codec head
 *
 * Version: v1.0.7
 *
 * Copyright (c) 2017 AWINIC Technology CO., LTD
 *
 * Author: Nick Li <liweilei@awinic.com.cn>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#ifndef _AW8896_H_
#define _AW8896_H_
#include <linux/regulator/driver.h>

/*
 * i2c transaction on Linux limited to 64k
 * (See Linux kernel documentation: Documentation/i2c/writing-clients)
 */
#define MAX_I2C_BUFFER_SIZE 65536
#define MAX_RAM_WRITE_BYTE_SIZE         128

#define AW8896_FLAG_DSP_START_ON_MUTE   (1 << 0)
#define AW8896_FLAG_SKIP_INTERRUPTS     (1 << 1)
#define AW8896_FLAG_SAAM_AVAILABLE      (1 << 2)
#define AW8896_FLAG_STEREO_DEVICE       (1 << 3)
#define AW8896_FLAG_MULTI_MIC_INPUTS    (1 << 4)
#define AW8896_FLAG_DSP_START_ON        (1 << 5)

#define AW8896_NUM_RATES                9

#define AW8896_MAX_REGISTER             0xff

#define AW8896_DSP_FW_BASE              0x8c00
#define AW8896_DSP_CFG_BASE             0x8380
#define AW8896_DSP_FW_VER_BASE          0x0f80

enum aw8896_chipid {
	AW8990_ID,
};

enum aw8896_mode_spk_rcv {
	AW8896_SPEAKER_MODE = 0,
	AW8896_RECEIVER_MODE = 1,
};

enum aw8896_dsp_fw_version {
	AW8896_DSP_FW_VER_D = 0,
	AW8896_DSP_FW_VER_E = 1,
};

enum aw8896_dsp_init_state {
	AW8896_DSP_INIT_STOPPED,        /* DSP not running */
	AW8896_DSP_INIT_RECOVER,        /* DSP error detected at runtime */
	AW8896_DSP_INIT_FAIL,           /* DSP init failed */
	AW8896_DSP_INIT_PENDING,        /* DSP start requested */
	AW8896_DSP_INIT_DONE,           /* DSP running */
	AW8896_DSP_INIT_INVALIDATED,    /* DSP was running, requires re-init */
};

enum aw8896_dsp_fw_state {
	AW8896_DSP_FW_NONE = 0,
	AW8896_DSP_FW_PENDING,
	AW8896_DSP_FW_FAIL,
	AW8896_DSP_FW_FAIL_COUNT,
	AW8896_DSP_FW_FAIL_REG_DSP,
	AW8896_DSP_FW_FAIL_PROBE,
	AW8896_DSP_FW_OK,
};

enum aw8896_dsp_cfg_state {
	AW8896_DSP_CFG_NONE = 0,
	AW8896_DSP_CFG_PENDING,
	AW8896_DSP_CFG_FAIL,
	AW8896_DSP_CFG_FAIL_COUNT,
	AW8896_DSP_CFG_FAIL_REG_DSP,
	AW8896_DSP_CFG_FAIL_PROBE,
	AW8896_DSP_CFG_OK,
};

struct dvdd_supply {
	struct regulator *regulator;
	int min_uv;
	int max_uv;
	int ua;
};

struct aw8896 {
	struct regmap *regmap;
	struct i2c_client *i2c;
	struct snd_soc_codec *codec;
	struct dvdd_supply supply;
	struct mutex lock;
	int dsp_init;
	int dsp_fw_state;
	int dsp_cfg_state;
	int dsp_fw_len;
	int dsp_cfg_len;
	int dsp_fw_ver;
	int sysclk;
	u16 rev;
	int rate;
	struct device *dev;
	int pstream;
	int cstream;
	struct input_dev *input;

	int rst_gpio;
	int reset_gpio;
	int power_gpio;
	int irq_gpio;

#ifdef CONFIG_DEBUG_FS
	struct dentry *dbg_dir;
#endif
	u8 reg;

	unsigned int flags;
	unsigned int chipid;
	unsigned int init;
	unsigned int spk_rcv_mode;
};

struct aw8896_container {
	int len;
	unsigned char data[];
};

static int aw8896_i2c_write(struct aw8896 *aw8896,
		unsigned char reg_addr, unsigned int reg_data);
static int aw8896_i2c_read(struct aw8896 *aw8896,
		unsigned char reg_addr, unsigned int *reg_data);

static void aw8896_interrupt_setup(struct aw8896 *aw8896);
static void aw8896_interrupt_clear(struct aw8896 *aw8896);
#endif