--- /dev/null
+/*
+ * 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 <asm/unaligned.h>
+
+#include "sigmadsp.h"
+#include "adau1701.h"
+
+#define ADAU1701_SAFELOAD_DATA(i) (0x0810 + (i))
+#define ADAU1701_SAFELOAD_ADDR(i) (0x0815 + (i))
+
+#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_IST (1 << 5)
+#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;
+ struct i2c_client *client;
+ 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:
+ case ADAU1701_DSPCTRL:
+ 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_safeload(struct sigmadsp *sigmadsp, unsigned int addr,
+ const uint8_t bytes[], size_t len)
+{
+ struct i2c_client *client = to_i2c_client(sigmadsp->dev);
+ struct adau1701 *adau1701 = i2c_get_clientdata(client);
+ unsigned int val;
+ unsigned int i;
+ uint8_t buf[10];
+ int ret;
+
+ ret = regmap_read(adau1701->regmap, ADAU1701_DSPCTRL, &val);
+ if (ret)
+ return ret;
+
+ if (val & ADAU1701_DSPCTRL_IST)
+ msleep(50);
+
+ for (i = 0; i < len / 4; i++) {
+ put_unaligned_le16(ADAU1701_SAFELOAD_DATA(i), buf);
+ buf[2] = 0x00;
+ memcpy(buf + 3, bytes + i * 4, 4);
+ ret = i2c_master_send(client, buf, 7);
+ if (ret < 0)
+ return ret;
+ else if (ret != 7)
+ return -EIO;
+
+ put_unaligned_le16(ADAU1701_SAFELOAD_ADDR(i), buf);
+ put_unaligned_le16(addr + i, buf + 2);
+ ret = i2c_master_send(client, buf, 4);
+ if (ret < 0)
+ return ret;
+ else if (ret != 4)
+ return -EIO;
+ }
+
+ return regmap_update_bits(adau1701->regmap, ADAU1701_DSPCTRL,
+ ADAU1701_DSPCTRL_IST, ADAU1701_DSPCTRL_IST);
+}
+
+static const struct sigmadsp_ops adau1701_sigmadsp_ops = {
+ .safeload = adau1701_safeload,
+};
+
+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->client = client;
+ 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,
+ &adau1701_sigmadsp_ops, 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");
Code Review / kvmfornfv.git / blobdiff