/* * Driver for ADAU1701 SigmaDSP processor * * Copyright 2011 Analog Devices Inc. * Author: Lars-Peter Clausen * based on an inital version by Cliff Cai * * Licensed under the GPL-2 or later. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "sigmadsp.h" #include "adau1701.h" #define ADAU1701_DSPCTRL 0x081c #define ADAU1701_SEROCTL 0x081e #define ADAU1701_SERICTL 0x081f #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 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 ADAU1707_CLKDIV_UNSET (-1UL) #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; }; 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_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[4]; 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 |= recv_buf[i] << (i * 8); return 0; } static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv) { struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); struct i2c_client *client = to_i2c_client(codec->dev); int ret; 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(adau1701->gpio_pll_mode[0], 0); gpio_set_value(adau1701->gpio_pll_mode[1], 0); break; case 256: gpio_set_value(adau1701->gpio_pll_mode[0], 0); gpio_set_value(adau1701->gpio_pll_mode[1], 1); break; case 384: gpio_set_value(adau1701->gpio_pll_mode[0], 1); gpio_set_value(adau1701->gpio_pll_mode[1], 0); break; case 0: /* fallback */ case 512: gpio_set_value(adau1701->gpio_pll_mode[0], 1); gpio_set_value(adau1701->gpio_pll_mode[1], 1); break; } } adau1701->pll_clkdiv = clkdiv; if (gpio_is_valid(adau1701->gpio_nreset)) { 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); } /* * Postpone the firmware download to a point in time when we * know the correct PLL setup */ if (clkdiv != ADAU1707_CLKDIV_UNSET) { ret = process_sigma_firmware(client, ADAU1701_FIRMWARE); 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, 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; struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); unsigned int clkdiv = adau1701->sysclk / params_rate(params); snd_pcm_format_t format; 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); 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; } 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; 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; 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; 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; } snd_soc_update_bits(codec, ADAU1701_OSCIPOW, ADAU1701_OSCIPOW_OPD, val); adau1701->sysclk = freq; 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; struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec); codec->control_data = to_i2c_client(codec->dev); /* * 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); if (ret < 0) return ret; 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]; } 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); 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 "); MODULE_AUTHOR("Lars-Peter Clausen "); MODULE_LICENSE("GPL");