| /* |
| * 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 <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 0x1c |
| #define ADAU1701_SEROCTL 0x1e |
| #define ADAU1701_SERICTL 0x1f |
| |
| #define ADAU1701_AUXNPOW 0x22 |
| |
| #define ADAU1701_OSCIPOW 0x26 |
| #define ADAU1701_DACSET 0x27 |
| |
| #define ADAU1701_NUM_REGS 0x28 |
| |
| #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 0x0010 |
| #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 ADAU1701_FIRMWARE "adau1701.bin" |
| |
| struct adau1701 { |
| int gpio_nreset; |
| unsigned int dai_fmt; |
| }; |
| |
| 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 snd_soc_codec *codec, |
| unsigned int reg) |
| { |
| switch (reg) { |
| case ADAU1701_DSPCTRL: |
| case ADAU1701_SEROCTL: |
| case ADAU1701_AUXNPOW: |
| case ADAU1701_OSCIPOW: |
| case ADAU1701_DACSET: |
| return 2; |
| case ADAU1701_SERICTL: |
| return 1; |
| } |
| |
| dev_err(codec->dev, "Unsupported register address: %d\n", reg); |
| return 0; |
| } |
| |
| static int adau1701_write(struct snd_soc_codec *codec, unsigned int reg, |
| unsigned int value) |
| { |
| unsigned int i; |
| unsigned int size; |
| uint8_t buf[4]; |
| int ret; |
| |
| size = adau1701_register_size(codec, reg); |
| if (size == 0) |
| return -EINVAL; |
| |
| snd_soc_cache_write(codec, reg, value); |
| |
| buf[0] = 0x08; |
| buf[1] = reg; |
| |
| for (i = size + 1; i >= 2; --i) { |
| buf[i] = value; |
| value >>= 8; |
| } |
| |
| ret = i2c_master_send(to_i2c_client(codec->dev), buf, size + 2); |
| if (ret == size + 2) |
| return 0; |
| else if (ret < 0) |
| return ret; |
| else |
| return -EIO; |
| } |
| |
| static unsigned int adau1701_read(struct snd_soc_codec *codec, unsigned int reg) |
| { |
| unsigned int value; |
| unsigned int ret; |
| |
| ret = snd_soc_cache_read(codec, reg, &value); |
| if (ret) |
| return ret; |
| |
| return value; |
| } |
| |
| static void adau1701_reset(struct snd_soc_codec *codec) |
| { |
| struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); |
| |
| if (!gpio_is_valid(adau1701->gpio_nreset)) |
| return; |
| |
| gpio_set_value(adau1701->gpio_nreset, 0); |
| /* minimum reset time is 20ns */ |
| udelay(1); |
| gpio_set_value(adau1701->gpio_nreset, 1); |
| /* power-up time may be as long as 85ms */ |
| mdelay(85); |
| } |
| |
| static int adau1701_init(struct snd_soc_codec *codec) |
| { |
| int ret; |
| struct i2c_client *client = to_i2c_client(codec->dev); |
| |
| adau1701_reset(codec); |
| |
| ret = process_sigma_firmware(client, ADAU1701_FIRMWARE); |
| if (ret) { |
| dev_warn(codec->dev, "Failed to load firmware\n"); |
| return ret; |
| } |
| |
| snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); |
| |
| return 0; |
| } |
| |
| static int adau1701_set_capture_pcm_format(struct snd_soc_codec *codec, |
| snd_pcm_format_t format) |
| { |
| struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); |
| unsigned int mask = ADAU1701_SEROCTL_WORD_LEN_MASK; |
| unsigned int val; |
| |
| switch (format) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| val = ADAU1701_SEROCTL_WORD_LEN_16; |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| val = ADAU1701_SEROCTL_WORD_LEN_20; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| val = ADAU1701_SEROCTL_WORD_LEN_24; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| if (adau1701->dai_fmt == SND_SOC_DAIFMT_RIGHT_J) { |
| switch (format) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| val |= ADAU1701_SEROCTL_MSB_DEALY16; |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| val |= ADAU1701_SEROCTL_MSB_DEALY12; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| val |= ADAU1701_SEROCTL_MSB_DEALY8; |
| break; |
| } |
| mask |= ADAU1701_SEROCTL_MSB_DEALY_MASK; |
| } |
| |
| snd_soc_update_bits(codec, ADAU1701_SEROCTL, mask, val); |
| |
| return 0; |
| } |
| |
| static int adau1701_set_playback_pcm_format(struct snd_soc_codec *codec, |
| snd_pcm_format_t format) |
| { |
| struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); |
| unsigned int val; |
| |
| if (adau1701->dai_fmt != SND_SOC_DAIFMT_RIGHT_J) |
| return 0; |
| |
| switch (format) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| val = ADAU1701_SERICTL_RIGHTJ_16; |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| val = ADAU1701_SERICTL_RIGHTJ_20; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| val = ADAU1701_SERICTL_RIGHTJ_24; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| snd_soc_update_bits(codec, 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; |
| snd_pcm_format_t format; |
| unsigned int val; |
| |
| 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; |
| } |
| |
| snd_soc_update_bits(codec, ADAU1701_DSPCTRL, |
| ADAU1701_DSPCTRL_SR_MASK, val); |
| |
| format = params_format(params); |
| if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| return adau1701_set_playback_pcm_format(codec, format); |
| else |
| return adau1701_set_capture_pcm_format(codec, format); |
| } |
| |
| 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; |
| |
| snd_soc_write(codec, ADAU1701_SERICTL, serictl); |
| snd_soc_update_bits(codec, 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; |
| |
| switch (level) { |
| case SND_SOC_BIAS_ON: |
| break; |
| case SND_SOC_BIAS_PREPARE: |
| break; |
| case SND_SOC_BIAS_STANDBY: |
| /* Enable VREF and VREF buffer */ |
| snd_soc_update_bits(codec, ADAU1701_AUXNPOW, mask, 0x00); |
| break; |
| case SND_SOC_BIAS_OFF: |
| /* Disable VREF and VREF buffer */ |
| snd_soc_update_bits(codec, 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; |
| unsigned int val; |
| |
| if (mute) |
| val = 0; |
| else |
| val = mask; |
| |
| snd_soc_update_bits(codec, 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; |
| |
| switch (clk_id) { |
| case ADAU1701_CLK_SRC_OSC: |
| val = 0x0; |
| break; |
| case ADAU1701_CLK_SRC_MCLK: |
| val = ADAU1701_OSCIPOW_OPD; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| snd_soc_update_bits(codec, ADAU1701_OSCIPOW, ADAU1701_OSCIPOW_OPD, val); |
| |
| return 0; |
| } |
| |
| #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, |
| }; |
| |
| 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 ret; |
| |
| codec->control_data = to_i2c_client(codec->dev); |
| |
| ret = adau1701_init(codec); |
| if (ret) |
| return ret; |
| |
| snd_soc_write(codec, ADAU1701_DSPCTRL, ADAU1701_DSPCTRL_CR); |
| |
| 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, |
| |
| .reg_cache_size = ADAU1701_NUM_REGS, |
| .reg_word_size = sizeof(u16), |
| |
| .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), |
| |
| .write = adau1701_write, |
| .read = adau1701_read, |
| |
| .set_sysclk = adau1701_set_sysclk, |
| }; |
| |
| 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 ret; |
| |
| adau1701 = devm_kzalloc(dev, sizeof(*adau1701), GFP_KERNEL); |
| if (!adau1701) |
| return -ENOMEM; |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| adau1701->gpio_nreset = gpio_nreset; |
| |
| i2c_set_clientdata(client, adau1701); |
| 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[] = { |
| { "adau1701", 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"); |