/* * ak4613.c -- Asahi Kasei ALSA Soc Audio driver * * Copyright (C) 2015 Renesas Electronics Corporation * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> * * Based on ak4642.c by Kuninori Morimoto * Based on wm8731.c by Richard Purdie * Based on ak4535.c by Richard Purdie * Based on wm8753.c by Liam Girdwood * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <linux/clk.h> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/of_device.h> #include <linux/module.h> #include <linux/regmap.h> #include <sound/soc.h> #include <sound/pcm_params.h> #include <sound/tlv.h> #define PW_MGMT1 0x00 /* Power Management 1 */ #define PW_MGMT2 0x01 /* Power Management 2 */ #define PW_MGMT3 0x02 /* Power Management 3 */ #define CTRL1 0x03 /* Control 1 */ #define CTRL2 0x04 /* Control 2 */ #define DEMP1 0x05 /* De-emphasis1 */ #define DEMP2 0x06 /* De-emphasis2 */ #define OFD 0x07 /* Overflow Detect */ #define ZRD 0x08 /* Zero Detect */ #define ICTRL 0x09 /* Input Control */ #define OCTRL 0x0a /* Output Control */ #define LOUT1 0x0b /* LOUT1 Volume Control */ #define ROUT1 0x0c /* ROUT1 Volume Control */ #define LOUT2 0x0d /* LOUT2 Volume Control */ #define ROUT2 0x0e /* ROUT2 Volume Control */ #define LOUT3 0x0f /* LOUT3 Volume Control */ #define ROUT3 0x10 /* ROUT3 Volume Control */ #define LOUT4 0x11 /* LOUT4 Volume Control */ #define ROUT4 0x12 /* ROUT4 Volume Control */ #define LOUT5 0x13 /* LOUT5 Volume Control */ #define ROUT5 0x14 /* ROUT5 Volume Control */ #define LOUT6 0x15 /* LOUT6 Volume Control */ #define ROUT6 0x16 /* ROUT6 Volume Control */ /* PW_MGMT1 */ #define RSTN BIT(0) #define PMDAC BIT(1) #define PMADC BIT(2) #define PMVR BIT(3) /* PW_MGMT2 */ #define PMAD_ALL 0x7 /* PW_MGMT3 */ #define PMDA_ALL 0x3f /* CTRL1 */ #define DIF0 BIT(3) #define DIF1 BIT(4) #define DIF2 BIT(5) #define TDM0 BIT(6) #define TDM1 BIT(7) #define NO_FMT (0xff) #define FMT_MASK (0xf8) /* CTRL2 */ #define DFS_MASK (3 << 2) #define DFS_NORMAL_SPEED (0 << 2) #define DFS_DOUBLE_SPEED (1 << 2) #define DFS_QUAD_SPEED (2 << 2) /* ICTRL */ #define ICTRL_MASK (0x3) /* OCTRL */ #define OCTRL_MASK (0x3F) struct ak4613_formats { unsigned int width; unsigned int fmt; }; struct ak4613_interface { struct ak4613_formats capture; struct ak4613_formats playback; }; struct ak4613_priv { struct mutex lock; const struct ak4613_interface *iface; struct snd_pcm_hw_constraint_list constraint; unsigned int sysclk; unsigned int fmt; u8 oc; u8 ic; int cnt; }; /* * Playback Volume * * max : 0x00 : 0 dB * ( 0.5 dB step ) * min : 0xFE : -127.0 dB * mute: 0xFF */ static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1); static const struct snd_kcontrol_new ak4613_snd_controls[] = { SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5, 0, 0xFF, 1, out_tlv), SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6, 0, 0xFF, 1, out_tlv), }; static const struct reg_default ak4613_reg[] = { { 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 }, { 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 }, { 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 }, { 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 }, { 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 }, { 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 }, }; #define AUDIO_IFACE_TO_VAL(fmts) ((fmts - ak4613_iface) << 3) #define AUDIO_IFACE(b, fmt) { b, SND_SOC_DAIFMT_##fmt } static const struct ak4613_interface ak4613_iface[] = { /* capture */ /* playback */ /* [0] - [2] are not supported */ [3] = { AUDIO_IFACE(24, LEFT_J), AUDIO_IFACE(24, LEFT_J) }, [4] = { AUDIO_IFACE(24, I2S), AUDIO_IFACE(24, I2S) }, }; static const struct regmap_config ak4613_regmap_cfg = { .reg_bits = 8, .val_bits = 8, .max_register = 0x16, .reg_defaults = ak4613_reg, .num_reg_defaults = ARRAY_SIZE(ak4613_reg), .cache_type = REGCACHE_RBTREE, }; static const struct of_device_id ak4613_of_match[] = { { .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg }, {}, }; MODULE_DEVICE_TABLE(of, ak4613_of_match); static const struct i2c_device_id ak4613_i2c_id[] = { { "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg }, { } }; MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id); static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = { /* Outputs */ SND_SOC_DAPM_OUTPUT("LOUT1"), SND_SOC_DAPM_OUTPUT("LOUT2"), SND_SOC_DAPM_OUTPUT("LOUT3"), SND_SOC_DAPM_OUTPUT("LOUT4"), SND_SOC_DAPM_OUTPUT("LOUT5"), SND_SOC_DAPM_OUTPUT("LOUT6"), SND_SOC_DAPM_OUTPUT("ROUT1"), SND_SOC_DAPM_OUTPUT("ROUT2"), SND_SOC_DAPM_OUTPUT("ROUT3"), SND_SOC_DAPM_OUTPUT("ROUT4"), SND_SOC_DAPM_OUTPUT("ROUT5"), SND_SOC_DAPM_OUTPUT("ROUT6"), /* Inputs */ SND_SOC_DAPM_INPUT("LIN1"), SND_SOC_DAPM_INPUT("LIN2"), SND_SOC_DAPM_INPUT("RIN1"), SND_SOC_DAPM_INPUT("RIN2"), /* DAC */ SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0), SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0), SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0), SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0), SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0), SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0), /* ADC */ SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0), SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0), }; static const struct snd_soc_dapm_route ak4613_intercon[] = { {"LOUT1", NULL, "DAC1"}, {"LOUT2", NULL, "DAC2"}, {"LOUT3", NULL, "DAC3"}, {"LOUT4", NULL, "DAC4"}, {"LOUT5", NULL, "DAC5"}, {"LOUT6", NULL, "DAC6"}, {"ROUT1", NULL, "DAC1"}, {"ROUT2", NULL, "DAC2"}, {"ROUT3", NULL, "DAC3"}, {"ROUT4", NULL, "DAC4"}, {"ROUT5", NULL, "DAC5"}, {"ROUT6", NULL, "DAC6"}, {"DAC1", NULL, "Playback"}, {"DAC2", NULL, "Playback"}, {"DAC3", NULL, "Playback"}, {"DAC4", NULL, "Playback"}, {"DAC5", NULL, "Playback"}, {"DAC6", NULL, "Playback"}, {"Capture", NULL, "ADC1"}, {"Capture", NULL, "ADC2"}, {"ADC1", NULL, "LIN1"}, {"ADC2", NULL, "LIN2"}, {"ADC1", NULL, "RIN1"}, {"ADC2", NULL, "RIN2"}, }; static void ak4613_dai_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); struct device *dev = codec->dev; mutex_lock(&priv->lock); priv->cnt--; if (priv->cnt < 0) { dev_err(dev, "unexpected counter error\n"); priv->cnt = 0; } if (!priv->cnt) priv->iface = NULL; mutex_unlock(&priv->lock); } static void ak4613_hw_constraints(struct ak4613_priv *priv, struct snd_pcm_runtime *runtime) { static const unsigned int ak4613_rates[] = { 32000, 44100, 48000, 64000, 88200, 96000, 176400, 192000, }; struct snd_pcm_hw_constraint_list *constraint = &priv->constraint; unsigned int fs; int i; constraint->list = ak4613_rates; constraint->mask = 0; constraint->count = 0; /* * Slave Mode * Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs * Double: [64kHz, 96kHz] : 256fs * Quad : [128kHz,192kHz]: 128fs * * Master mode * Normal: [32kHz, 48kHz] : 256fs or 512fs * Double: [64kHz, 96kHz] : 256fs * Quad : [128kHz,192kHz]: 128fs */ for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) { /* minimum fs on each range */ fs = (ak4613_rates[i] <= 96000) ? 256 : 128; if (priv->sysclk >= ak4613_rates[i] * fs) constraint->count = i + 1; } snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, constraint); } static int ak4613_dai_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); priv->cnt++; ak4613_hw_constraints(priv, substream->runtime); return 0; } static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_codec *codec = codec_dai->codec; struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); priv->sysclk = freq; return 0; } static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct snd_soc_codec *codec = dai->codec; struct ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); fmt &= SND_SOC_DAIFMT_FORMAT_MASK; switch (fmt) { case SND_SOC_DAIFMT_LEFT_J: case SND_SOC_DAIFMT_I2S: priv->fmt = fmt; break; default: return -EINVAL; } return 0; } static bool ak4613_dai_fmt_matching(const struct ak4613_interface *iface, int is_play, unsigned int fmt, unsigned int width) { const struct ak4613_formats *fmts; fmts = (is_play) ? &iface->playback : &iface->capture; if (fmts->fmt != fmt) return false; if (fmts->width != width) return false; return true; } static int ak4613_dai_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 ak4613_priv *priv = snd_soc_codec_get_drvdata(codec); const struct ak4613_interface *iface; struct device *dev = codec->dev; unsigned int width = params_width(params); unsigned int fmt = priv->fmt; unsigned int rate; int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK; int i, ret; u8 fmt_ctrl, ctrl2; rate = params_rate(params); switch (rate) { case 32000: case 44100: case 48000: ctrl2 = DFS_NORMAL_SPEED; break; case 64000: case 88200: case 96000: ctrl2 = DFS_DOUBLE_SPEED; break; case 176400: case 192000: ctrl2 = DFS_QUAD_SPEED; break; default: return -EINVAL; } /* * FIXME * * It doesn't support TDM at this point */ fmt_ctrl = NO_FMT; ret = -EINVAL; iface = NULL; mutex_lock(&priv->lock); if (priv->iface) { if (ak4613_dai_fmt_matching(priv->iface, is_play, fmt, width)) iface = priv->iface; } else { for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) { if (!ak4613_dai_fmt_matching(ak4613_iface + i, is_play, fmt, width)) continue; iface = ak4613_iface + i; break; } } if ((priv->iface == NULL) || (priv->iface == iface)) { priv->iface = iface; ret = 0; } mutex_unlock(&priv->lock); if (ret < 0) goto hw_params_end; fmt_ctrl = AUDIO_IFACE_TO_VAL(iface); snd_soc_update_bits(codec, CTRL1, FMT_MASK, fmt_ctrl); snd_soc_update_bits(codec, CTRL2, DFS_MASK, ctrl2); snd_soc_update_bits(codec, ICTRL, ICTRL_MASK, priv->ic); snd_soc_update_bits(codec, OCTRL, OCTRL_MASK, priv->oc); hw_params_end: if (ret < 0) dev_warn(dev, "unsupported data width/format combination\n"); return ret; } static int ak4613_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { u8 mgmt1 = 0; switch (level) { case SND_SOC_BIAS_ON: mgmt1 |= RSTN; /* fall through */ case SND_SOC_BIAS_PREPARE: mgmt1 |= PMADC | PMDAC; /* fall through */ case SND_SOC_BIAS_STANDBY: mgmt1 |= PMVR; /* fall through */ case SND_SOC_BIAS_OFF: default: break; } snd_soc_write(codec, PW_MGMT1, mgmt1); return 0; } static const struct snd_soc_dai_ops ak4613_dai_ops = { .startup = ak4613_dai_startup, .shutdown = ak4613_dai_shutdown, .set_sysclk = ak4613_dai_set_sysclk, .set_fmt = ak4613_dai_set_fmt, .hw_params = ak4613_dai_hw_params, }; #define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\ SNDRV_PCM_RATE_44100 |\ SNDRV_PCM_RATE_48000 |\ SNDRV_PCM_RATE_64000 |\ SNDRV_PCM_RATE_88200 |\ SNDRV_PCM_RATE_96000 |\ SNDRV_PCM_RATE_176400 |\ SNDRV_PCM_RATE_192000) #define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE) static struct snd_soc_dai_driver ak4613_dai = { .name = "ak4613-hifi", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = AK4613_PCM_RATE, .formats = AK4613_PCM_FMTBIT, }, .capture = { .stream_name = "Capture", .channels_min = 2, .channels_max = 2, .rates = AK4613_PCM_RATE, .formats = AK4613_PCM_FMTBIT, }, .ops = &ak4613_dai_ops, .symmetric_rates = 1, }; static int ak4613_suspend(struct snd_soc_codec *codec) { struct regmap *regmap = dev_get_regmap(codec->dev, NULL); regcache_cache_only(regmap, true); regcache_mark_dirty(regmap); return 0; } static int ak4613_resume(struct snd_soc_codec *codec) { struct regmap *regmap = dev_get_regmap(codec->dev, NULL); regcache_cache_only(regmap, false); return regcache_sync(regmap); } static const struct snd_soc_codec_driver soc_codec_dev_ak4613 = { .suspend = ak4613_suspend, .resume = ak4613_resume, .set_bias_level = ak4613_set_bias_level, .component_driver = { .controls = ak4613_snd_controls, .num_controls = ARRAY_SIZE(ak4613_snd_controls), .dapm_widgets = ak4613_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets), .dapm_routes = ak4613_intercon, .num_dapm_routes = ARRAY_SIZE(ak4613_intercon), }, }; static void ak4613_parse_of(struct ak4613_priv *priv, struct device *dev) { struct device_node *np = dev->of_node; char prop[32]; int i; /* Input 1 - 2 */ for (i = 0; i < 2; i++) { snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1); if (!of_get_property(np, prop, NULL)) priv->ic |= 1 << i; } /* Output 1 - 6 */ for (i = 0; i < 6; i++) { snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1); if (!of_get_property(np, prop, NULL)) priv->oc |= 1 << i; } } static int ak4613_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct device *dev = &i2c->dev; struct device_node *np = dev->of_node; const struct regmap_config *regmap_cfg; struct regmap *regmap; struct ak4613_priv *priv; regmap_cfg = NULL; if (np) { const struct of_device_id *of_id; of_id = of_match_device(ak4613_of_match, dev); if (of_id) regmap_cfg = of_id->data; } else { regmap_cfg = (const struct regmap_config *)id->driver_data; } if (!regmap_cfg) return -EINVAL; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; ak4613_parse_of(priv, dev); priv->iface = NULL; priv->cnt = 0; priv->sysclk = 0; mutex_init(&priv->lock); i2c_set_clientdata(i2c, priv); regmap = devm_regmap_init_i2c(i2c, regmap_cfg); if (IS_ERR(regmap)) return PTR_ERR(regmap); return snd_soc_register_codec(dev, &soc_codec_dev_ak4613, &ak4613_dai, 1); } static int ak4613_i2c_remove(struct i2c_client *client) { snd_soc_unregister_codec(&client->dev); return 0; } static struct i2c_driver ak4613_i2c_driver = { .driver = { .name = "ak4613-codec", .of_match_table = ak4613_of_match, }, .probe = ak4613_i2c_probe, .remove = ak4613_i2c_remove, .id_table = ak4613_i2c_id, }; module_i2c_driver(ak4613_i2c_driver); MODULE_DESCRIPTION("Soc AK4613 driver"); MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); MODULE_LICENSE("GPL v2");