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/*
* Driver for ADAU1701 SigmaDSP processor
*
* Copyright 2011 Analog Devices Inc.
* Author: Lars-Peter Clausen <lars@metafoo.de>
* based on an inital version by Cliff Cai <cliff.cai@analog.com>
*
* Licensed under the GPL-2 or later.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_device.h>
#include <linux/regmap.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "sigmadsp.h"
#include "adau1701.h"
#define ADAU1701_DSPCTRL 0x081c
#define ADAU1701_SEROCTL 0x081e
#define ADAU1701_SERICTL 0x081f
#define ADAU1701_AUXNPOW 0x0822
#define ADAU1701_PINCONF_0 0x0820
#define ADAU1701_PINCONF_1 0x0821
#define ADAU1701_AUXNPOW 0x0822
#define ADAU1701_OSCIPOW 0x0826
#define ADAU1701_DACSET 0x0827
#define ADAU1701_MAX_REGISTER 0x0828
#define ADAU1701_DSPCTRL_CR (1 << 2)
#define ADAU1701_DSPCTRL_DAM (1 << 3)
#define ADAU1701_DSPCTRL_ADM (1 << 4)
#define ADAU1701_DSPCTRL_SR_48 0x00
#define ADAU1701_DSPCTRL_SR_96 0x01
#define ADAU1701_DSPCTRL_SR_192 0x02
#define ADAU1701_DSPCTRL_SR_MASK 0x03
#define ADAU1701_SEROCTL_INV_LRCLK 0x2000
#define ADAU1701_SEROCTL_INV_BCLK 0x1000
#define ADAU1701_SEROCTL_MASTER 0x0800
#define ADAU1701_SEROCTL_OBF16 0x0000
#define ADAU1701_SEROCTL_OBF8 0x0200
#define ADAU1701_SEROCTL_OBF4 0x0400
#define ADAU1701_SEROCTL_OBF2 0x0600
#define ADAU1701_SEROCTL_OBF_MASK 0x0600
#define ADAU1701_SEROCTL_OLF1024 0x0000
#define ADAU1701_SEROCTL_OLF512 0x0080
#define ADAU1701_SEROCTL_OLF256 0x0100
#define ADAU1701_SEROCTL_OLF_MASK 0x0180
#define ADAU1701_SEROCTL_MSB_DEALY1 0x0000
#define ADAU1701_SEROCTL_MSB_DEALY0 0x0004
#define ADAU1701_SEROCTL_MSB_DEALY8 0x0008
#define ADAU1701_SEROCTL_MSB_DEALY12 0x000c
#define ADAU1701_SEROCTL_MSB_DEALY16 0x0010
#define ADAU1701_SEROCTL_MSB_DEALY_MASK 0x001c
#define ADAU1701_SEROCTL_WORD_LEN_24 0x0000
#define ADAU1701_SEROCTL_WORD_LEN_20 0x0001
#define ADAU1701_SEROCTL_WORD_LEN_16 0x0002
#define ADAU1701_SEROCTL_WORD_LEN_MASK 0x0003
#define ADAU1701_AUXNPOW_VBPD 0x40
#define ADAU1701_AUXNPOW_VRPD 0x20
#define ADAU1701_SERICTL_I2S 0
#define ADAU1701_SERICTL_LEFTJ 1
#define ADAU1701_SERICTL_TDM 2
#define ADAU1701_SERICTL_RIGHTJ_24 3
#define ADAU1701_SERICTL_RIGHTJ_20 4
#define ADAU1701_SERICTL_RIGHTJ_18 5
#define ADAU1701_SERICTL_RIGHTJ_16 6
#define ADAU1701_SERICTL_MODE_MASK 7
#define ADAU1701_SERICTL_INV_BCLK BIT(3)
#define ADAU1701_SERICTL_INV_LRCLK BIT(4)
#define ADAU1701_OSCIPOW_OPD 0x04
#define ADAU1701_DACSET_DACINIT 1
#define ADAU1707_CLKDIV_UNSET (-1U)
#define ADAU1701_FIRMWARE "adau1701.bin"
struct adau1701 {
int gpio_nreset;
int gpio_pll_mode[2];
unsigned int dai_fmt;
unsigned int pll_clkdiv;
unsigned int sysclk;
struct regmap *regmap;
u8 pin_config[12];
};
static const struct snd_kcontrol_new adau1701_controls[] = {
SOC_SINGLE("Master Capture Switch", ADAU1701_DSPCTRL, 4, 1, 0),
};
static const struct snd_soc_dapm_widget adau1701_dapm_widgets[] = {
SND_SOC_DAPM_DAC("DAC0", "Playback", ADAU1701_AUXNPOW, 3, 1),
SND_SOC_DAPM_DAC("DAC1", "Playback", ADAU1701_AUXNPOW, 2, 1),
SND_SOC_DAPM_DAC("DAC2", "Playback", ADAU1701_AUXNPOW, 1, 1),
SND_SOC_DAPM_DAC("DAC3", "Playback", ADAU1701_AUXNPOW, 0, 1),
SND_SOC_DAPM_ADC("ADC", "Capture", ADAU1701_AUXNPOW, 7, 1),
SND_SOC_DAPM_OUTPUT("OUT0"),
SND_SOC_DAPM_OUTPUT("OUT1"),
SND_SOC_DAPM_OUTPUT("OUT2"),
SND_SOC_DAPM_OUTPUT("OUT3"),
SND_SOC_DAPM_INPUT("IN0"),
SND_SOC_DAPM_INPUT("IN1"),
};
static const struct snd_soc_dapm_route adau1701_dapm_routes[] = {
{ "OUT0", NULL, "DAC0" },
{ "OUT1", NULL, "DAC1" },
{ "OUT2", NULL, "DAC2" },
{ "OUT3", NULL, "DAC3" },
{ "ADC", NULL, "IN0" },
{ "ADC", NULL, "IN1" },
};
static unsigned int adau1701_register_size(struct device *dev,
unsigned int reg)
{
switch (reg) {
case ADAU1701_PINCONF_0:
case ADAU1701_PINCONF_1:
return 3;
case ADAU1701_DSPCTRL:
case ADAU1701_SEROCTL:
case ADAU1701_AUXNPOW:
case ADAU1701_OSCIPOW:
case ADAU1701_DACSET:
return 2;
case ADAU1701_SERICTL:
return 1;
}
dev_err(dev, "Unsupported register address: %d\n", reg);
return 0;
}
static bool adau1701_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case ADAU1701_DACSET:
return true;
default:
return false;
}
}
static int adau1701_reg_write(void *context, unsigned int reg,
unsigned int value)
{
struct i2c_client *client = context;
unsigned int i;
unsigned int size;
uint8_t buf[5];
int ret;
size = adau1701_register_size(&client->dev, reg);
if (size == 0)
return -EINVAL;
buf[0] = reg >> 8;
buf[1] = reg & 0xff;
for (i = size + 1; i >= 2; --i) {
buf[i] = value;
value >>= 8;
}
ret = i2c_master_send(client, buf, size + 2);
if (ret == size + 2)
return 0;
else if (ret < 0)
return ret;
else
return -EIO;
}
static int adau1701_reg_read(void *context, unsigned int reg,
unsigned int *value)
{
int ret;
unsigned int i;
unsigned int size;
uint8_t send_buf[2], recv_buf[3];
struct i2c_client *client = context;
struct i2c_msg msgs[2];
size = adau1701_register_size(&client->dev, reg);
if (size == 0)
return -EINVAL;
send_buf[0] = reg >> 8;
send_buf[1] = reg & 0xff;
msgs[0].addr = client->addr;
msgs[0].len = sizeof(send_buf);
msgs[0].buf = send_buf;
msgs[0].flags = 0;
msgs[1].addr = client->addr;
msgs[1].len = size;
msgs[1].buf = recv_buf;
msgs[1].flags = I2C_M_RD;
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret < 0)
return ret;
else if (ret !=
|