diff options
Diffstat (limited to 'sound/soc/codecs/max9867.c')
| -rwxr-xr-x | sound/soc/codecs/max9867.c | 546 |
1 files changed, 546 insertions, 0 deletions
diff --git a/sound/soc/codecs/max9867.c b/sound/soc/codecs/max9867.c new file mode 100755 index 000000000000..2a22fddeb6af --- /dev/null +++ b/sound/soc/codecs/max9867.c @@ -0,0 +1,546 @@ +/* + * max9867.c -- max9867 ALSA SoC Audio driver + * + * Copyright 2013-15 Maxim Integrated Products + * + * 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/delay.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/tlv.h> +#include "max9867.h" + +static const char *const max9867_spmode[] = { + "Stereo Diff", "Mono Diff", + "Stereo Cap", "Mono Cap", + "Stereo Single", "Mono Single", + "Stereo Single Fast", "Mono Single Fast" +}; +static const char *const max9867_sidetone_text[] = { + "None", "Left", "Right", "LeftRight", "LeftRightDiv2", +}; +static const char *const max9867_filter_text[] = {"IIR", "FIR"}; + +static SOC_ENUM_SINGLE_DECL(max9867_filter, MAX9867_CODECFLTR, 7, + max9867_filter_text); +static SOC_ENUM_SINGLE_DECL(max9867_spkmode, MAX9867_MODECONFIG, 0, + max9867_spmode); +static SOC_ENUM_SINGLE_DECL(max9867_sidetone, MAX9867_DACGAIN, 6, + max9867_sidetone_text); +static DECLARE_TLV_DB_SCALE(max9860_capture_tlv, -600, 200, 0); +static DECLARE_TLV_DB_SCALE(max9860_mic_tlv, 2000, 100, 1); +static DECLARE_TLV_DB_SCALE(max9860_adc_left_tlv, -1200, 100, 1); +static DECLARE_TLV_DB_SCALE(max9860_adc_right_tlv, -1200, 100, 1); +static const unsigned int max98088_micboost_tlv[] = { + TLV_DB_RANGE_HEAD(2), + 0, 1, TLV_DB_SCALE_ITEM(0, 2000, 0), + 2, 2, TLV_DB_SCALE_ITEM(3000, 0, 0), +}; + +static const struct snd_kcontrol_new max9867_snd_controls[] = { + SOC_DOUBLE_R("Master Playback Volume", MAX9867_LEFTVOL, + MAX9867_RIGHTVOL, 0, 63, 1), + SOC_DOUBLE_R_TLV("Capture Volume", MAX9867_LEFTMICGAIN, + MAX9867_RIGHTMICGAIN, + 0, 15, 1, max9860_capture_tlv), + SOC_DOUBLE_R_TLV("Mic Volume", MAX9867_LEFTMICGAIN, + MAX9867_RIGHTMICGAIN, 0, 31, 1, max9860_mic_tlv), + SOC_DOUBLE_R_TLV("Mic Boost Volume", MAX9867_LEFTMICGAIN, + MAX9867_RIGHTMICGAIN, 5, 3, 0, max98088_micboost_tlv), + SOC_ENUM("Digital Sidetone Src", max9867_sidetone), + SOC_SINGLE("Sidetone Volume", MAX9867_DACGAIN, 0, 31, 1), + SOC_SINGLE("DAC Volume", MAX9867_DACLEVEL, 4, 3, 0), + SOC_SINGLE("DAC Attenuation", MAX9867_DACLEVEL, 0, 15, 1), + SOC_SINGLE_TLV("ADC Left Volume", MAX9867_ADCLEVEL, + 4, 15, 1, max9860_adc_left_tlv), + SOC_SINGLE_TLV("ADC Right Volume", MAX9867_ADCLEVEL, + 0, 15, 1, max9860_adc_right_tlv), + SOC_ENUM("Speaker Mode", max9867_spkmode), + SOC_SINGLE("Volume Smoothing Switch", MAX9867_MODECONFIG, 6, 1, 0), + SOC_SINGLE("ZCD Switch", MAX9867_MODECONFIG, 5, 1, 0), + SOC_ENUM("DSP Filter", max9867_filter), +}; + +static const char *const max9867_mux[] = {"None", "Mic", "Line", "Mic_Line"}; + +static SOC_ENUM_SINGLE_DECL(max9867_mux_enum, + MAX9867_INPUTCONFIG, MAX9867_INPUT_SHIFT, + max9867_mux); + +static const struct snd_kcontrol_new max9867_dapm_mux_controls = + SOC_DAPM_ENUM("Route", max9867_mux_enum); + +static const struct snd_kcontrol_new max9867_left_dapm_control = + SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 6, 1, 0); +static const struct snd_kcontrol_new max9867_right_dapm_control = + SOC_DAPM_SINGLE("Switch", MAX9867_PWRMAN, 5, 1, 0); +static const struct snd_kcontrol_new max9867_line_dapm_control = + SOC_DAPM_SINGLE("Switch", MAX9867_LEFTLINELVL, 6, 1, 1); + +static const struct snd_soc_dapm_widget max9867_dapm_widgets[] = { + SND_SOC_DAPM_AIF_IN("DAI_OUT", "HiFi Playback", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_DAC("Left DAC", NULL, MAX9867_PWRMAN, 3, 0), + SND_SOC_DAPM_DAC("Right DAC", NULL, MAX9867_PWRMAN, 2, 0), + SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), + SND_SOC_DAPM_OUTPUT("HPOUT"), + + SND_SOC_DAPM_AIF_IN("DAI_IN", "HiFi Capture", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_ADC("Left ADC", "HiFi Capture", MAX9867_PWRMAN, 1, 0), + SND_SOC_DAPM_ADC("Right ADC", "HiFi Capture", MAX9867_PWRMAN, 0, 0), + SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, + &max9867_dapm_mux_controls), + + SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), + SND_SOC_DAPM_SWITCH("Left Line", MAX9867_LEFTLINELVL, 6, 1, + &max9867_left_dapm_control), + SND_SOC_DAPM_SWITCH("Right Line", MAX9867_RIGTHLINELVL, 6, 1, + &max9867_right_dapm_control), + SND_SOC_DAPM_SWITCH("Line Mixer", SND_SOC_NOPM, 0, 0, + &max9867_line_dapm_control), + SND_SOC_DAPM_INPUT("LINE_IN"), +}; + +static const struct snd_soc_dapm_route max9867_audio_map[] = { + {"Left DAC", NULL, "DAI_OUT"}, + {"Right DAC", NULL, "DAI_OUT"}, + {"Output Mixer", NULL, "Left DAC"}, + {"Output Mixer", NULL, "Right DAC"}, + {"HPOUT", NULL, "Output Mixer"}, + + {"Left ADC", NULL, "DAI_IN"}, + {"Right ADC", NULL, "DAI_IN"}, + {"Input Mixer", NULL, "Left ADC"}, + {"Input Mixer", NULL, "Right ADC"}, + {"Input Mux", "Line", "Input Mixer"}, + {"Input Mux", "Mic", "Input Mixer"}, + {"Input Mux", "Mic_Line", "Input Mixer"}, + {"Right Line", "Switch", "Input Mux"}, + {"Left Line", "Switch", "Input Mux"}, + {"LINE_IN", NULL, "Left Line"}, + {"LINE_IN", NULL, "Right Line"}, +}; + +enum rates { + pcm_rate_8, pcm_rate_16, pcm_rate_24, + pcm_rate_32, pcm_rate_44, + pcm_rate_48, max_pcm_rate, +}; + +struct ni_div_rates { + u32 mclk; + u16 ni[max_pcm_rate]; +} ni_div[] = { + {11289600, {0x116A, 0x22D4, 0x343F, 0x45A9, 0x6000, 0x687D} }, + {12000000, {0x1062, 0x20C5, 0x3127, 0x4189, 0x5A51, 0x624E} }, + {12288000, {0x1000, 0x2000, 0x3000, 0x4000, 0x5833, 0x6000} }, + {13000000, {0x0F20, 0x1E3F, 0x2D5F, 0x3C7F, 0x535F, 0x5ABE} }, + {19200000, {0x0A3D, 0x147B, 0x1EB8, 0x28F6, 0x3873, 0x3D71} }, + {24000000, {0x1062, 0x20C5, 0x1893, 0x4189, 0x5A51, 0x624E} }, + {26000000, {0x0F20, 0x1E3F, 0x16AF, 0x3C7F, 0x535F, 0x5ABE} }, + {27000000, {0x0E90, 0x1D21, 0x15D8, 0x3A41, 0x5048, 0x5762} }, +}; + +static inline int get_ni_value(int mclk, int rate) +{ + int i, ret = 0; + + /* find the closest rate index*/ + for (i = 0; i < ARRAY_SIZE(ni_div); i++) { + if (ni_div[i].mclk >= mclk) + break; + } + if (i == ARRAY_SIZE(ni_div)) + return -EINVAL; + + switch (rate) { + case 8000: + return ni_div[i].ni[pcm_rate_8]; + case 16000: + return ni_div[i].ni[pcm_rate_16]; + case 32000: + return ni_div[i].ni[pcm_rate_32]; + case 44100: + return ni_div[i].ni[pcm_rate_44]; + case 48000: + return ni_div[i].ni[pcm_rate_48]; + default: + pr_err("%s wrong rate %d\n", __func__, rate); + ret = -EINVAL; + } + return ret; +} + +static int max9867_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 max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); + unsigned int ni_h, ni_l; + int value; + + value = get_ni_value(max9867->sysclk, params_rate(params)); + if (value < 0) + return value; + + ni_h = (0xFF00 & value) >> 8; + ni_l = 0x00FF & value; + /* set up the ni value */ + regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, + MAX9867_NI_HIGH_MASK, ni_h); + regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, + MAX9867_NI_LOW_MASK, ni_l); + if (!max9867->master) { + /* + * digital pll locks on to any externally supplied LRCLK signal + * and also enable rapid lock mode. + */ + regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKLOW, + MAX9867_RAPID_LOCK, MAX9867_RAPID_LOCK); + regmap_update_bits(max9867->regmap, MAX9867_AUDIOCLKHIGH, + MAX9867_PLL, MAX9867_PLL); + } else { + unsigned long int bclk_rate, pclk_bclk_ratio; + int bclk_value; + + bclk_rate = params_rate(params) * 2 * params_width(params); + pclk_bclk_ratio = max9867->pclk/bclk_rate; + switch (params_width(params)) { + case 8: + case 16: + switch (pclk_bclk_ratio) { + case 2: + bclk_value = MAX9867_IFC1B_PCLK_2; + break; + case 4: + bclk_value = MAX9867_IFC1B_PCLK_4; + break; + case 8: + bclk_value = MAX9867_IFC1B_PCLK_8; + break; + case 16: + bclk_value = MAX9867_IFC1B_PCLK_16; + break; + default: + dev_err(codec->dev, + "unsupported sampling rate\n"); + return -EINVAL; + } + break; + case 24: + bclk_value = MAX9867_IFC1B_24BIT; + break; + case 32: + bclk_value = MAX9867_IFC1B_32BIT; + break; + default: + dev_err(codec->dev, "unsupported sampling rate\n"); + return -EINVAL; + } + regmap_update_bits(max9867->regmap, MAX9867_IFC1B, + MAX9867_IFC1B_BCLK_MASK, bclk_value); + } + return 0; +} + +static int max9867_prepare(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec = dai->codec; + struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); + + regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, + MAX9867_SHTDOWN_MASK, MAX9867_SHTDOWN_MASK); + return 0; +} + +static int max9867_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); + + if (mute) + regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL, + MAX9867_DAC_MUTE_MASK, MAX9867_DAC_MUTE_MASK); + else + regmap_update_bits(max9867->regmap, MAX9867_DACLEVEL, + MAX9867_DAC_MUTE_MASK, 0); + return 0; +} + +static int max9867_set_dai_sysclk(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); + int value = 0; + + /* Set the prescaler based on the master clock frequency*/ + if (freq >= 10000000 && freq <= 20000000) { + value |= MAX9867_PSCLK_10_20; + max9867->pclk = freq; + } else if (freq >= 20000000 && freq <= 40000000) { + value |= MAX9867_PSCLK_20_40; + max9867->pclk = freq/2; + } else if (freq >= 40000000 && freq <= 60000000) { + value |= MAX9867_PSCLK_40_60; + max9867->pclk = freq/4; + } else { + pr_err("bad clock frequency %d", freq); + return -EINVAL; + } + value = value << MAX9867_PSCLK_SHIFT; + max9867->sysclk = freq; + /* exact integer mode is not supported */ + value &= ~MAX9867_FREQ_MASK; + regmap_update_bits(max9867->regmap, MAX9867_SYSCLK, + MAX9867_PSCLK_MASK, value); + return 0; +} + +static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); + u8 iface1A = 0, iface1B = 0; + int ret; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + max9867->master = 1; + iface1A |= MAX9867_MASTER; + break; + case SND_SOC_DAIFMT_CBS_CFS: + max9867->master = 0; + iface1A &= ~MAX9867_MASTER; + break; + default: + return -EINVAL; + } + + /* for i2s compatible mode */ + iface1A |= MAX9867_I2S_DLY; + /* SDOUT goes to hiz state after all data is transferred */ + iface1A |= MAX9867_SDOUT_HIZ; + + /* Clock inversion bits, BCI and WCI */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_IB_IF: + iface1A |= MAX9867_WCI_MODE | MAX9867_BCI_MODE; + break; + case SND_SOC_DAIFMT_IB_NF: + iface1A |= MAX9867_BCI_MODE; + break; + case SND_SOC_DAIFMT_NB_IF: + iface1A |= MAX9867_WCI_MODE; + break; + default: + return -EINVAL; + } + + ret = regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A); + ret = regmap_write(max9867->regmap, MAX9867_IFC1B, iface1B); + return 0; +} + +static struct snd_soc_dai_ops max9867_dai_ops = { + .set_fmt = max9867_dai_set_fmt, + .set_sysclk = max9867_set_dai_sysclk, + .prepare = max9867_prepare, + .digital_mute = max9867_mute, + .hw_params = max9867_dai_hw_params, +}; + +#define MAX9867_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\ + SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000) +#define MAX9867_FORMATS (SNDRV_PCM_FMTBIT_S16_LE) + +static struct snd_soc_dai_driver max9867_dai[] = { + { + .name = "max9867-aif1", + .playback = { + .stream_name = "HiFi Playback", + .channels_min = 1, + .channels_max = 2, + .rates = MAX9867_RATES, + .formats = MAX9867_FORMATS, + }, + .capture = { + .stream_name = "HiFi Capture", + .channels_min = 1, + .channels_max = 2, + .rates = MAX9867_RATES, + .formats = MAX9867_FORMATS, + }, + .ops = &max9867_dai_ops, + } +}; + +#ifdef CONFIG_PM_SLEEP +static int max9867_suspend(struct device *dev) +{ + struct max9867_priv *max9867 = dev_get_drvdata(dev); + + /* Drop down to power saving mode when system is suspended */ + regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, + MAX9867_SHTDOWN_MASK, ~MAX9867_SHTDOWN_MASK); + return 0; +} + +static int max9867_resume(struct device *dev) +{ + struct max9867_priv *max9867 = dev_get_drvdata(dev); + + regmap_update_bits(max9867->regmap, MAX9867_PWRMAN, + MAX9867_SHTDOWN_MASK, MAX9867_SHTDOWN_MASK); + return 0; +} +#endif + +static int max9867_probe(struct snd_soc_codec *codec) +{ + struct max9867_priv *max9867 = snd_soc_codec_get_drvdata(codec); + + dev_dbg(codec->dev, "max98090_probe\n"); + max9867->codec = codec; + return 0; +} + +static struct snd_soc_codec_driver max9867_codec = { + .probe = max9867_probe, + .controls = max9867_snd_controls, + .num_controls = ARRAY_SIZE(max9867_snd_controls), + .dapm_routes = max9867_audio_map, + .num_dapm_routes = ARRAY_SIZE(max9867_audio_map), + .dapm_widgets = max9867_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(max9867_dapm_widgets), +}; + +static bool max9867_volatile_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MAX9867_STATUS: + case MAX9867_JACKSTATUS: + case MAX9867_AUXHIGH: + case MAX9867_AUXLOW: + return true; + default: + return false; + } +} + +static const struct reg_default max9867_reg[] = { + { 0x04, 0x00 }, + { 0x05, 0x00 }, + { 0x06, 0x00 }, + { 0x07, 0x00 }, + { 0x08, 0x00 }, + { 0x09, 0x00 }, + { 0x0A, 0x00 }, + { 0x0B, 0x00 }, + { 0x0C, 0x00 }, + { 0x0D, 0x00 }, + { 0x0E, 0x00 }, + { 0x0F, 0x00 }, + { 0x10, 0x00 }, + { 0x11, 0x00 }, + { 0x12, 0x00 }, + { 0x13, 0x00 }, + { 0x14, 0x00 }, + { 0x15, 0x00 }, + { 0x16, 0x00 }, + { 0x17, 0x00 }, +}; + +static const struct regmap_config max9867_regmap = { + .reg_bits = 8, + .val_bits = 8, + .max_register = MAX9867_REVISION, + .reg_defaults = max9867_reg, + .num_reg_defaults = ARRAY_SIZE(max9867_reg), + .volatile_reg = max9867_volatile_register, + .cache_type = REGCACHE_RBTREE, +}; + +static int max9867_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct max9867_priv *max9867; + int ret = 0, reg; + + max9867 = devm_kzalloc(&i2c->dev, + sizeof(*max9867), GFP_KERNEL); + if (!max9867) + return -ENOMEM; + + i2c_set_clientdata(i2c, max9867); + max9867->regmap = devm_regmap_init_i2c(i2c, &max9867_regmap); + if (IS_ERR(max9867->regmap)) { + ret = PTR_ERR(max9867->regmap); + dev_err(&i2c->dev, + "Failed to allocate regmap: %d\n", ret); + return ret; + } + ret = regmap_read(max9867->regmap, + MAX9867_REVISION, ®); + if (ret < 0) { + dev_err(&i2c->dev, "Failed to read: %d\n", ret); + return ret; + } + dev_info(&i2c->dev, "device revision: %x\n", reg); + ret = snd_soc_register_codec(&i2c->dev, &max9867_codec, + max9867_dai, ARRAY_SIZE(max9867_dai)); + if (ret < 0) { + dev_err(&i2c->dev, "Failed to register codec: %d\n", ret); + return ret; + } + return ret; +} + +static int max9867_i2c_remove(struct i2c_client *client) +{ + snd_soc_unregister_codec(&client->dev); + return 0; +} + +static const struct i2c_device_id max9867_i2c_id[] = { + { "max9867", 0 }, + { } +}; + +static const struct of_device_id max9867_of_match[] = { + { .compatible = "maxim,max9867", }, + { } +}; + +MODULE_DEVICE_TABLE(i2c, max9867_i2c_id); + +static const struct dev_pm_ops max9867_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(max9867_suspend, max9867_resume) +}; + +static struct i2c_driver max9867_i2c_driver = { + .driver = { + .name = "max9867", + .of_match_table = of_match_ptr(max9867_of_match), + .pm = &max9867_pm_ops, + }, + .probe = max9867_i2c_probe, + .remove = max9867_i2c_remove, + .id_table = max9867_i2c_id, +}; + +module_i2c_driver(max9867_i2c_driver); + +MODULE_AUTHOR("anish kumar <yesanishhere@gmail.com>"); +MODULE_DESCRIPTION("ALSA SoC MAX9867 driver"); +MODULE_LICENSE("GPL"); |