/* * 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 <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 { 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 int adau1701_load_firmware(struct snd_soc_codec *codec) { return process_sigma_firmware(codec->control_data, ADAU1701_FIRMWARE); } 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_pcm_runtime *rtd = substream->private_data; struct snd_soc_codec *codec = rtd->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, }; static int adau1701_probe(struct snd_soc_codec *codec) { int ret; codec->dapm.idle_bias_off = 1; codec->control_data = to_i2c_client(codec->dev); ret = adau1701_load_firmware(codec); if (ret) dev_warn(codec->dev, "Failed to load firmware\n"); snd_soc_write(codec, ADAU1701_DACSET, ADAU1701_DACSET_DACINIT); 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, .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 __devinit int adau1701_i2c_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct adau1701 *adau1701; int ret; adau1701 = devm_kzalloc(&client->dev, sizeof(*adau1701), GFP_KERNEL); if (!adau1701) return -ENOMEM; i2c_set_clientdata(client, adau1701); ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv, &adau1701_dai, 1); return ret; } static __devexit 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, }, .probe = adau1701_i2c_probe, .remove = __devexit_p(adau1701_i2c_remove), .id_table = adau1701_i2c_id, }; static int __init adau1701_init(void) { return i2c_add_driver(&adau1701_i2c_driver); } module_init(adau1701_init); static void __exit adau1701_exit(void) { i2c_del_driver(&adau1701_i2c_driver); } module_exit(adau1701_exit); 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");