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d48b088e3e
linux-next/sound/soc/codecs/adau1701.c
Lars-Peter Clausen d48b088e3e ASoC: sigmadsp: Restructure in preparation for fw v2 support 
The v2 file format of the SigmaDSP takes a more declarative style compared
to the imperative style of the v1 format. In addition some features that are
supported with v2 require the driver to keep state around for the firmware.
This requires a bit of restructuring of both the firmware loader itself and
the drivers making use of the firmware loader.

Instead of loading and executing the firmware in place when the DSP is
configured the firmware is now loaded at driver probe time. This is required
since the new firmware format will in addition to the firmware data itself
contain meta information describing the firmware and its requirements and
capabilities. Those will for example be used to restrict the supported
samplerates advertised by the driver to userspace to the list of samplerates
supported for the firmware.

This only does the restructuring required by the v2 format, but does not
yet add support for the new format itself.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-11-20 09:55:34 +00:00

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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];
struct sigmadsp *sigmadsp;
};
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 != ARRAY_SIZE(msgs))
return -EIO;
*value = 0;
for (i = 0; i < size; i++) {
*value <<= 8;
*value |= recv_buf[i];
}
return 0;
}
static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv,
unsigned int rate)
{
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
int ret;
sigmadsp_reset(adau1701->sigmadsp);
if (clkdiv != ADAU1707_CLKDIV_UNSET &&
gpio_is_valid(adau1701->gpio_pll_mode[0]) &&
gpio_is_valid(adau1701->gpio_pll_mode[1])) {
switch (clkdiv) {
case 64:
gpio_set_value_cansleep(adau1701->gpio_pll_mode[0], 0);
gpio_set_value_cansleep(adau1701->gpio_pll_mode[1], 0);
break;
case 256:
gpio_set_value_cansleep(adau1701->gpio_pll_mode[0], 0);
gpio_set_value_cansleep(adau1701->gpio_pll_mode[1], 1);
break;
case 384:
gpio_set_value_cansleep(adau1701->gpio_pll_mode[0], 1);
gpio_set_value_cansleep(adau1701->gpio_pll_mode[1], 0);
break;
case 0: /* fallback */
case 512:
gpio_set_value_cansleep(adau1701->gpio_pll_mode[0], 1);
gpio_set_value_cansleep(adau1701->gpio_pll_mode[1], 1);
break;
}
}
adau1701->pll_clkdiv = clkdiv;
if (gpio_is_valid(adau1701->gpio_nreset)) {
gpio_set_value_cansleep(adau1701->gpio_nreset, 0);
/* minimum reset time is 20ns */
udelay(1);
gpio_set_value_cansleep(adau1701->gpio_nreset, 1);
/* power-up time may be as long as 85ms */
mdelay(85);
}
/*
* Postpone the firmware download to a point in time when we
* know the correct PLL setup
*/
if (clkdiv != ADAU1707_CLKDIV_UNSET) {
ret = sigmadsp_setup(adau1701->sigmadsp, rate);
if (ret) {
dev_warn(codec->dev, "Failed to load firmware\n");
return ret;
}
}
regmap_write(adau1701->regmap, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT);
regmap_write(adau1701->regmap, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR);
regcache_mark_dirty(adau1701->regmap);
regcache_sync(adau1701->regmap);
return 0;
}
static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec,
struct snd_pcm_hw_params *params)
{
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
unsigned int mask = ADAU1701_SEROCTL_WORD_LEN_MASK;
unsigned int val;
switch (params_width(params)) {
case 16:
val = ADAU1701_SEROCTL_WORD_LEN_16;
break;
case 20:
val = ADAU1701_SEROCTL_WORD_LEN_20;
break;
case 24:
val = ADAU1701_SEROCTL_WORD_LEN_24;
break;
default:
return -EINVAL;
}
if (adau1701->dai_fmt == SND_SOC_DAIFMT_RIGHT_J) {
switch (params_width(params)) {
case 16:
val |= ADAU1701_SEROCTL_MSB_DEALY16;
break;
case 20:
val |= ADAU1701_SEROCTL_MSB_DEALY12;
break;
case 24:
val |= ADAU1701_SEROCTL_MSB_DEALY8;
break;
}
mask |= ADAU1701_SEROCTL_MSB_DEALY_MASK;
}
regmap_update_bits(adau1701->regmap, ADAU1701_SEROCTL, mask, val);
return 0;
}
static int adau1701_set_playback_pcm_format(struct snd_soc_codec *codec,
struct snd_pcm_hw_params *params)
{
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
unsigned int val;
if (adau1701->dai_fmt != SND_SOC_DAIFMT_RIGHT_J)
return 0;
switch (params_width(params)) {
case 16:
val = ADAU1701_SERICTL_RIGHTJ_16;
break;
case 20:
val = ADAU1701_SERICTL_RIGHTJ_20;
break;
case 24:
val = ADAU1701_SERICTL_RIGHTJ_24;
break;
default:
return -EINVAL;
}
regmap_update_bits(adau1701->regmap, ADAU1701_SERICTL,
ADAU1701_SERICTL_MODE_MASK, val);
return 0;
}
static int adau1701_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
unsigned int clkdiv = adau1701->sysclk / params_rate(params);
unsigned int val;
int ret;
/*
* If the mclk/lrclk ratio changes, the chip needs updated PLL
* mode GPIO settings, and a full reset cycle, including a new
* firmware upload.
*/
if (clkdiv != adau1701->pll_clkdiv) {
ret = adau1701_reset(codec, clkdiv, params_rate(params));
if (ret < 0)
return ret;
}
switch (params_rate(params)) {
case 192000:
val = ADAU1701_DSPCTRL_SR_192;
break;
case 96000:
val = ADAU1701_DSPCTRL_SR_96;
break;
case 48000:
val = ADAU1701_DSPCTRL_SR_48;
break;
default:
return -EINVAL;
}
regmap_update_bits(adau1701->regmap, ADAU1701_DSPCTRL,
ADAU1701_DSPCTRL_SR_MASK, val);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
return adau1701_set_playback_pcm_format(codec, params);
else
return adau1701_set_capture_pcm_format(codec, params);
}
static int adau1701_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
unsigned int serictl = 0x00, seroctl = 0x00;
bool invert_lrclk;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
/* master, 64-bits per sample, 1 frame per sample */
seroctl |= ADAU1701_SEROCTL_MASTER | ADAU1701_SEROCTL_OBF16
| ADAU1701_SEROCTL_OLF1024;
break;
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
/* clock inversion */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
invert_lrclk = false;
break;
case SND_SOC_DAIFMT_NB_IF:
invert_lrclk = true;
break;
case SND_SOC_DAIFMT_IB_NF:
invert_lrclk = false;
serictl |= ADAU1701_SERICTL_INV_BCLK;
seroctl |= ADAU1701_SEROCTL_INV_BCLK;
break;
case SND_SOC_DAIFMT_IB_IF:
invert_lrclk = true;
serictl |= ADAU1701_SERICTL_INV_BCLK;
seroctl |= ADAU1701_SEROCTL_INV_BCLK;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
break;
case SND_SOC_DAIFMT_LEFT_J:
serictl |= ADAU1701_SERICTL_LEFTJ;
seroctl |= ADAU1701_SEROCTL_MSB_DEALY0;
invert_lrclk = !invert_lrclk;
break;
case SND_SOC_DAIFMT_RIGHT_J:
serictl |= ADAU1701_SERICTL_RIGHTJ_24;
seroctl |= ADAU1701_SEROCTL_MSB_DEALY8;
invert_lrclk = !invert_lrclk;
break;
default:
return -EINVAL;
}
if (invert_lrclk) {
seroctl |= ADAU1701_SEROCTL_INV_LRCLK;
serictl |= ADAU1701_SERICTL_INV_LRCLK;
}
adau1701->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
regmap_write(adau1701->regmap, ADAU1701_SERICTL, serictl);
regmap_update_bits(adau1701->regmap, ADAU1701_SEROCTL,
~ADAU1701_SEROCTL_WORD_LEN_MASK, seroctl);
return 0;
}
static int adau1701_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
unsigned int mask = ADAU1701_AUXNPOW_VBPD | ADAU1701_AUXNPOW_VRPD;
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
/* Enable VREF and VREF buffer */
regmap_update_bits(adau1701->regmap,
ADAU1701_AUXNPOW, mask, 0x00);
break;
case SND_SOC_BIAS_OFF:
/* Disable VREF and VREF buffer */
regmap_update_bits(adau1701->regmap,
ADAU1701_AUXNPOW, mask, mask);
break;
}
codec->dapm.bias_level = level;
return 0;
}
static int adau1701_digital_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
unsigned int mask = ADAU1701_DSPCTRL_DAM;
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
unsigned int val;
if (mute)
val = 0;
else
val = mask;
regmap_update_bits(adau1701->regmap, ADAU1701_DSPCTRL, mask, val);
return 0;
}
static int adau1701_set_sysclk(struct snd_soc_codec *codec, int clk_id,
int source, unsigned int freq, int dir)
{
unsigned int val;
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
switch (clk_id) {
case ADAU1701_CLK_SRC_OSC:
val = 0x0;
break;
case ADAU1701_CLK_SRC_MCLK:
val = ADAU1701_OSCIPOW_OPD;
break;
default:
return -EINVAL;
}
regmap_update_bits(adau1701->regmap, ADAU1701_OSCIPOW,
ADAU1701_OSCIPOW_OPD, val);
adau1701->sysclk = freq;
return 0;
}
static int adau1701_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(dai->codec);
return sigmadsp_restrict_params(adau1701->sigmadsp, substream);
}
#define ADAU1701_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \
SNDRV_PCM_RATE_192000)
#define ADAU1701_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE)
static const struct snd_soc_dai_ops adau1701_dai_ops = {
.set_fmt = adau1701_set_dai_fmt,
.hw_params = adau1701_hw_params,
.digital_mute = adau1701_digital_mute,
.startup = adau1701_startup,
};
static struct snd_soc_dai_driver adau1701_dai = {
.name = "adau1701",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 8,
.rates = ADAU1701_RATES,
.formats = ADAU1701_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 8,
.rates = ADAU1701_RATES,
.formats = ADAU1701_FORMATS,
},
.ops = &adau1701_dai_ops,
.symmetric_rates = 1,
};
#ifdef CONFIG_OF
static const struct of_device_id adau1701_dt_ids[] = {
{ .compatible = "adi,adau1701", },
{ }
};
MODULE_DEVICE_TABLE(of, adau1701_dt_ids);
#endif
static int adau1701_probe(struct snd_soc_codec *codec)
{
int i, ret;
unsigned int val;
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
ret = sigmadsp_attach(adau1701->sigmadsp, &codec->component);
if (ret)
return ret;
/*
* Let the pll_clkdiv variable default to something that won't happen
* at runtime. That way, we can postpone the firmware download from
* adau1701_reset() to a point in time when we know the correct PLL
* mode parameters.
*/
adau1701->pll_clkdiv = ADAU1707_CLKDIV_UNSET;
/* initalize with pre-configured pll mode settings */
ret = adau1701_reset(codec, adau1701->pll_clkdiv, 0);
if (ret < 0)
return ret;
/* set up pin config */
val = 0;
for (i = 0; i < 6; i++)
val |= adau1701->pin_config[i] << (i * 4);
regmap_write(adau1701->regmap, ADAU1701_PINCONF_0, val);
val = 0;
for (i = 0; i < 6; i++)
val |= adau1701->pin_config[i + 6] << (i * 4);
regmap_write(adau1701->regmap, ADAU1701_PINCONF_1, val);
return 0;
}
static struct snd_soc_codec_driver adau1701_codec_drv = {
.probe = adau1701_probe,
.set_bias_level = adau1701_set_bias_level,
.idle_bias_off = true,
.controls = adau1701_controls,
.num_controls = ARRAY_SIZE(adau1701_controls),
.dapm_widgets = adau1701_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(adau1701_dapm_widgets),
.dapm_routes = adau1701_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(adau1701_dapm_routes),
.set_sysclk = adau1701_set_sysclk,
};
static const struct regmap_config adau1701_regmap = {
.reg_bits = 16,
.val_bits = 32,
.max_register = ADAU1701_MAX_REGISTER,
.cache_type = REGCACHE_RBTREE,
.volatile_reg = adau1701_volatile_reg,
.reg_write = adau1701_reg_write,
.reg_read = adau1701_reg_read,
};
static int adau1701_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adau1701 *adau1701;
struct device *dev = &client->dev;
int gpio_nreset = -EINVAL;
int gpio_pll_mode[2] = { -EINVAL, -EINVAL };
int ret;
adau1701 = devm_kzalloc(dev, sizeof(*adau1701), GFP_KERNEL);
if (!adau1701)
return -ENOMEM;
adau1701->regmap = devm_regmap_init(dev, NULL, client,
&adau1701_regmap);
if (IS_ERR(adau1701->regmap))
return PTR_ERR(adau1701->regmap);
if (dev->of_node) {
gpio_nreset = of_get_named_gpio(dev->of_node, "reset-gpio", 0);
if (gpio_nreset < 0 && gpio_nreset != -ENOENT)
return gpio_nreset;
gpio_pll_mode[0] = of_get_named_gpio(dev->of_node,
"adi,pll-mode-gpios", 0);
if (gpio_pll_mode[0] < 0 && gpio_pll_mode[0] != -ENOENT)
return gpio_pll_mode[0];
gpio_pll_mode[1] = of_get_named_gpio(dev->of_node,
"adi,pll-mode-gpios", 1);
if (gpio_pll_mode[1] < 0 && gpio_pll_mode[1] != -ENOENT)
return gpio_pll_mode[1];
of_property_read_u32(dev->of_node, "adi,pll-clkdiv",
&adau1701->pll_clkdiv);
of_property_read_u8_array(dev->of_node, "adi,pin-config",
adau1701->pin_config,
ARRAY_SIZE(adau1701->pin_config));
}
if (gpio_is_valid(gpio_nreset)) {
ret = devm_gpio_request_one(dev, gpio_nreset, GPIOF_OUT_INIT_LOW,
"ADAU1701 Reset");
if (ret < 0)
return ret;
}
if (gpio_is_valid(gpio_pll_mode[0]) &&
gpio_is_valid(gpio_pll_mode[1])) {
ret = devm_gpio_request_one(dev, gpio_pll_mode[0],
GPIOF_OUT_INIT_LOW,
"ADAU1701 PLL mode 0");
if (ret < 0)
return ret;
ret = devm_gpio_request_one(dev, gpio_pll_mode[1],
GPIOF_OUT_INIT_LOW,
"ADAU1701 PLL mode 1");
if (ret < 0)
return ret;
}
adau1701->gpio_nreset = gpio_nreset;
adau1701->gpio_pll_mode[0] = gpio_pll_mode[0];
adau1701->gpio_pll_mode[1] = gpio_pll_mode[1];
i2c_set_clientdata(client, adau1701);
adau1701->sigmadsp = devm_sigmadsp_init_i2c(client, NULL,
ADAU1701_FIRMWARE);
if (IS_ERR(adau1701->sigmadsp))
return PTR_ERR(adau1701->sigmadsp);
ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv,
&adau1701_dai, 1);
return ret;
}
static int adau1701_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id adau1701_i2c_id[] = {
{ "adau1401", 0 },
{ "adau1401a", 0 },
{ "adau1701", 0 },
{ "adau1702", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, adau1701_i2c_id);
static struct i2c_driver adau1701_i2c_driver = {
.driver = {
.name = "adau1701",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(adau1701_dt_ids),
},
.probe = adau1701_i2c_probe,
.remove = adau1701_i2c_remove,
.id_table = adau1701_i2c_id,
};
module_i2c_driver(adau1701_i2c_driver);
MODULE_DESCRIPTION("ASoC ADAU1701 SigmaDSP driver");
MODULE_AUTHOR("Cliff Cai <cliff.cai@analog.com>");
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_LICENSE("GPL");
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