| /* |
| * wm8731.c -- WM8731 ALSA SoC Audio driver |
| * |
| * Copyright 2005 Openedhand Ltd. |
| * Copyright 2006-12 Wolfson Microelectronics, plc |
| * |
| * Author: Richard Purdie <richard@openedhand.com> |
| * |
| * 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/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/i2c.h> |
| #include <linux/slab.h> |
| #include <linux/regmap.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/spi/spi.h> |
| #include <linux/of_device.h> |
| #include <linux/mutex.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/initval.h> |
| #include <sound/tlv.h> |
| |
| #include "wm8731.h" |
| |
| #define WM8731_NUM_SUPPLIES 4 |
| static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = { |
| "AVDD", |
| "HPVDD", |
| "DCVDD", |
| "DBVDD", |
| }; |
| |
| /* codec private data */ |
| struct wm8731_priv { |
| struct regmap *regmap; |
| struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES]; |
| const struct snd_pcm_hw_constraint_list *constraints; |
| unsigned int sysclk; |
| int sysclk_type; |
| int playback_fs; |
| bool deemph; |
| |
| struct mutex lock; |
| }; |
| |
| |
| /* |
| * wm8731 register cache |
| */ |
| static const struct reg_default wm8731_reg_defaults[] = { |
| { 0, 0x0097 }, |
| { 1, 0x0097 }, |
| { 2, 0x0079 }, |
| { 3, 0x0079 }, |
| { 4, 0x000a }, |
| { 5, 0x0008 }, |
| { 6, 0x009f }, |
| { 7, 0x000a }, |
| { 8, 0x0000 }, |
| { 9, 0x0000 }, |
| }; |
| |
| static bool wm8731_volatile(struct device *dev, unsigned int reg) |
| { |
| return reg == WM8731_RESET; |
| } |
| |
| static bool wm8731_writeable(struct device *dev, unsigned int reg) |
| { |
| return reg <= WM8731_RESET; |
| } |
| |
| #define wm8731_reset(c) snd_soc_write(c, WM8731_RESET, 0) |
| |
| static const char *wm8731_input_select[] = {"Line In", "Mic"}; |
| |
| static SOC_ENUM_SINGLE_DECL(wm8731_insel_enum, |
| WM8731_APANA, 2, wm8731_input_select); |
| |
| static int wm8731_deemph[] = { 0, 32000, 44100, 48000 }; |
| |
| static int wm8731_set_deemph(struct snd_soc_codec *codec) |
| { |
| struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| int val, i, best; |
| |
| /* If we're using deemphasis select the nearest available sample |
| * rate. |
| */ |
| if (wm8731->deemph) { |
| best = 1; |
| for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) { |
| if (abs(wm8731_deemph[i] - wm8731->playback_fs) < |
| abs(wm8731_deemph[best] - wm8731->playback_fs)) |
| best = i; |
| } |
| |
| val = best << 1; |
| } else { |
| best = 0; |
| val = 0; |
| } |
| |
| dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n", |
| best, wm8731_deemph[best]); |
| |
| return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val); |
| } |
| |
| static int wm8731_get_deemph(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); |
| struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| |
| ucontrol->value.integer.value[0] = wm8731->deemph; |
| |
| return 0; |
| } |
| |
| static int wm8731_put_deemph(struct snd_kcontrol *kcontrol, |
| struct snd_ctl_elem_value *ucontrol) |
| { |
| struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol); |
| struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| int deemph = ucontrol->value.integer.value[0]; |
| int ret = 0; |
| |
| if (deemph > 1) |
| return -EINVAL; |
| |
| mutex_lock(&wm8731->lock); |
| if (wm8731->deemph != deemph) { |
| wm8731->deemph = deemph; |
| |
| wm8731_set_deemph(codec); |
| |
| ret = 1; |
| } |
| mutex_unlock(&wm8731->lock); |
| |
| return ret; |
| } |
| |
| static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0); |
| static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0); |
| static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); |
| static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0); |
| |
| static const struct snd_kcontrol_new wm8731_snd_controls[] = { |
| |
| SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V, |
| 0, 127, 0, out_tlv), |
| SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V, |
| 7, 1, 0), |
| |
| SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0, |
| in_tlv), |
| SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1), |
| |
| SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv), |
| SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1), |
| |
| SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1, |
| sidetone_tlv), |
| |
| SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1), |
| SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0), |
| |
| SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0, |
| wm8731_get_deemph, wm8731_put_deemph), |
| }; |
| |
| /* Output Mixer */ |
| static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = { |
| SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0), |
| SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0), |
| SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0), |
| }; |
| |
| /* Input mux */ |
| static const struct snd_kcontrol_new wm8731_input_mux_controls = |
| SOC_DAPM_ENUM("Input Select", wm8731_insel_enum); |
| |
| static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = { |
| SND_SOC_DAPM_SUPPLY("ACTIVE",WM8731_ACTIVE, 0, 0, NULL, 0), |
| SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0), |
| SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1, |
| &wm8731_output_mixer_controls[0], |
| ARRAY_SIZE(wm8731_output_mixer_controls)), |
| SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1), |
| SND_SOC_DAPM_OUTPUT("LOUT"), |
| SND_SOC_DAPM_OUTPUT("LHPOUT"), |
| SND_SOC_DAPM_OUTPUT("ROUT"), |
| SND_SOC_DAPM_OUTPUT("RHPOUT"), |
| SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1), |
| SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls), |
| SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0), |
| SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1), |
| SND_SOC_DAPM_INPUT("MICIN"), |
| SND_SOC_DAPM_INPUT("RLINEIN"), |
| SND_SOC_DAPM_INPUT("LLINEIN"), |
| }; |
| |
| static int wm8731_check_osc(struct snd_soc_dapm_widget *source, |
| struct snd_soc_dapm_widget *sink) |
| { |
| struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm); |
| struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| |
| return wm8731->sysclk_type == WM8731_SYSCLK_XTAL; |
| } |
| |
| static const struct snd_soc_dapm_route wm8731_intercon[] = { |
| {"DAC", NULL, "OSC", wm8731_check_osc}, |
| {"ADC", NULL, "OSC", wm8731_check_osc}, |
| {"DAC", NULL, "ACTIVE"}, |
| {"ADC", NULL, "ACTIVE"}, |
| |
| /* output mixer */ |
| {"Output Mixer", "Line Bypass Switch", "Line Input"}, |
| {"Output Mixer", "HiFi Playback Switch", "DAC"}, |
| {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"}, |
| |
| /* outputs */ |
| {"RHPOUT", NULL, "Output Mixer"}, |
| {"ROUT", NULL, "Output Mixer"}, |
| {"LHPOUT", NULL, "Output Mixer"}, |
| {"LOUT", NULL, "Output Mixer"}, |
| |
| /* input mux */ |
| {"Input Mux", "Line In", "Line Input"}, |
| {"Input Mux", "Mic", "Mic Bias"}, |
| {"ADC", NULL, "Input Mux"}, |
| |
| /* inputs */ |
| {"Line Input", NULL, "LLINEIN"}, |
| {"Line Input", NULL, "RLINEIN"}, |
| {"Mic Bias", NULL, "MICIN"}, |
| }; |
| |
| struct _coeff_div { |
| u32 mclk; |
| u32 rate; |
| u16 fs; |
| u8 sr:4; |
| u8 bosr:1; |
| u8 usb:1; |
| }; |
| |
| /* codec mclk clock divider coefficients */ |
| static const struct _coeff_div coeff_div[] = { |
| /* 48k */ |
| {12288000, 48000, 256, 0x0, 0x0, 0x0}, |
| {18432000, 48000, 384, 0x0, 0x1, 0x0}, |
| {12000000, 48000, 250, 0x0, 0x0, 0x1}, |
| |
| /* 32k */ |
| {12288000, 32000, 384, 0x6, 0x0, 0x0}, |
| {18432000, 32000, 576, 0x6, 0x1, 0x0}, |
| {12000000, 32000, 375, 0x6, 0x0, 0x1}, |
| |
| /* 8k */ |
| {12288000, 8000, 1536, 0x3, 0x0, 0x0}, |
| {18432000, 8000, 2304, 0x3, 0x1, 0x0}, |
| {11289600, 8000, 1408, 0xb, 0x0, 0x0}, |
| {16934400, 8000, 2112, 0xb, 0x1, 0x0}, |
| {12000000, 8000, 1500, 0x3, 0x0, 0x1}, |
| |
| /* 96k */ |
| {12288000, 96000, 128, 0x7, 0x0, 0x0}, |
| {18432000, 96000, 192, 0x7, 0x1, 0x0}, |
| {12000000, 96000, 125, 0x7, 0x0, 0x1}, |
| |
| /* 44.1k */ |
| {11289600, 44100, 256, 0x8, 0x0, 0x0}, |
| {16934400, 44100, 384, 0x8, 0x1, 0x0}, |
| {12000000, 44100, 272, 0x8, 0x1, 0x1}, |
| |
| /* 88.2k */ |
| {11289600, 88200, 128, 0xf, 0x0, 0x0}, |
| {16934400, 88200, 192, 0xf, 0x1, 0x0}, |
| {12000000, 88200, 136, 0xf, 0x1, 0x1}, |
| }; |
| |
| /* rates constraints */ |
| static const unsigned int wm8731_rates_12000000[] = { |
| 8000, 32000, 44100, 48000, 96000, 88200, |
| }; |
| |
| static const unsigned int wm8731_rates_12288000_18432000[] = { |
| 8000, 32000, 48000, 96000, |
| }; |
| |
| static const unsigned int wm8731_rates_11289600_16934400[] = { |
| 8000, 44100, 88200, |
| }; |
| |
| static const struct snd_pcm_hw_constraint_list wm8731_constraints_12000000 = { |
| .list = wm8731_rates_12000000, |
| .count = ARRAY_SIZE(wm8731_rates_12000000), |
| }; |
| |
| static const |
| struct snd_pcm_hw_constraint_list wm8731_constraints_12288000_18432000 = { |
| .list = wm8731_rates_12288000_18432000, |
| .count = ARRAY_SIZE(wm8731_rates_12288000_18432000), |
| }; |
| |
| static const |
| struct snd_pcm_hw_constraint_list wm8731_constraints_11289600_16934400 = { |
| .list = wm8731_rates_11289600_16934400, |
| .count = ARRAY_SIZE(wm8731_rates_11289600_16934400), |
| }; |
| |
| static inline int get_coeff(int mclk, int rate) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(coeff_div); i++) { |
| if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk) |
| return i; |
| } |
| return 0; |
| } |
| |
| static int wm8731_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 wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3; |
| int i = get_coeff(wm8731->sysclk, params_rate(params)); |
| u16 srate = (coeff_div[i].sr << 2) | |
| (coeff_div[i].bosr << 1) | coeff_div[i].usb; |
| |
| wm8731->playback_fs = params_rate(params); |
| |
| snd_soc_write(codec, WM8731_SRATE, srate); |
| |
| /* bit size */ |
| switch (params_width(params)) { |
| case 16: |
| break; |
| case 20: |
| iface |= 0x0004; |
| break; |
| case 24: |
| iface |= 0x0008; |
| break; |
| } |
| |
| wm8731_set_deemph(codec); |
| |
| snd_soc_write(codec, WM8731_IFACE, iface); |
| return 0; |
| } |
| |
| static int wm8731_mute(struct snd_soc_dai *dai, int mute) |
| { |
| struct snd_soc_codec *codec = dai->codec; |
| u16 mute_reg = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7; |
| |
| if (mute) |
| snd_soc_write(codec, WM8731_APDIGI, mute_reg | 0x8); |
| else |
| snd_soc_write(codec, WM8731_APDIGI, mute_reg); |
| return 0; |
| } |
| |
| static int wm8731_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 wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| |
| switch (clk_id) { |
| case WM8731_SYSCLK_XTAL: |
| case WM8731_SYSCLK_MCLK: |
| wm8731->sysclk_type = clk_id; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| switch (freq) { |
| case 0: |
| wm8731->constraints = NULL; |
| break; |
| case 12000000: |
| wm8731->constraints = &wm8731_constraints_12000000; |
| break; |
| case 12288000: |
| case 18432000: |
| wm8731->constraints = &wm8731_constraints_12288000_18432000; |
| break; |
| case 16934400: |
| case 11289600: |
| wm8731->constraints = &wm8731_constraints_11289600_16934400; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| wm8731->sysclk = freq; |
| |
| snd_soc_dapm_sync(&codec->dapm); |
| |
| return 0; |
| } |
| |
| |
| static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai, |
| unsigned int fmt) |
| { |
| struct snd_soc_codec *codec = codec_dai->codec; |
| u16 iface = 0; |
| |
| /* set master/slave audio interface */ |
| switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| case SND_SOC_DAIFMT_CBM_CFM: |
| iface |= 0x0040; |
| break; |
| case SND_SOC_DAIFMT_CBS_CFS: |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* interface format */ |
| switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| case SND_SOC_DAIFMT_I2S: |
| iface |= 0x0002; |
| break; |
| case SND_SOC_DAIFMT_RIGHT_J: |
| break; |
| case SND_SOC_DAIFMT_LEFT_J: |
| iface |= 0x0001; |
| break; |
| case SND_SOC_DAIFMT_DSP_A: |
| iface |= 0x0013; |
| break; |
| case SND_SOC_DAIFMT_DSP_B: |
| iface |= 0x0003; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* clock inversion */ |
| switch (fmt & SND_SOC_DAIFMT_INV_MASK) { |
| case SND_SOC_DAIFMT_NB_NF: |
| break; |
| case SND_SOC_DAIFMT_IB_IF: |
| iface |= 0x0090; |
| break; |
| case SND_SOC_DAIFMT_IB_NF: |
| iface |= 0x0080; |
| break; |
| case SND_SOC_DAIFMT_NB_IF: |
| iface |= 0x0010; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| /* set iface */ |
| snd_soc_write(codec, WM8731_IFACE, iface); |
| return 0; |
| } |
| |
| static int wm8731_set_bias_level(struct snd_soc_codec *codec, |
| enum snd_soc_bias_level level) |
| { |
| struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| int ret; |
| u16 reg; |
| |
| switch (level) { |
| case SND_SOC_BIAS_ON: |
| break; |
| case SND_SOC_BIAS_PREPARE: |
| break; |
| case SND_SOC_BIAS_STANDBY: |
| if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { |
| ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), |
| wm8731->supplies); |
| if (ret != 0) |
| return ret; |
| |
| regcache_sync(wm8731->regmap); |
| } |
| |
| /* Clear PWROFF, gate CLKOUT, everything else as-is */ |
| reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f; |
| snd_soc_write(codec, WM8731_PWR, reg | 0x0040); |
| break; |
| case SND_SOC_BIAS_OFF: |
| snd_soc_write(codec, WM8731_PWR, 0xffff); |
| regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), |
| wm8731->supplies); |
| regcache_mark_dirty(wm8731->regmap); |
| break; |
| } |
| codec->dapm.bias_level = level; |
| return 0; |
| } |
| |
| static int wm8731_startup(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(dai->codec); |
| |
| if (wm8731->constraints) |
| snd_pcm_hw_constraint_list(substream->runtime, 0, |
| SNDRV_PCM_HW_PARAM_RATE, |
| wm8731->constraints); |
| |
| return 0; |
| } |
| |
| #define WM8731_RATES SNDRV_PCM_RATE_8000_96000 |
| |
| #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
| SNDRV_PCM_FMTBIT_S24_LE) |
| |
| static const struct snd_soc_dai_ops wm8731_dai_ops = { |
| .startup = wm8731_startup, |
| .hw_params = wm8731_hw_params, |
| .digital_mute = wm8731_mute, |
| .set_sysclk = wm8731_set_dai_sysclk, |
| .set_fmt = wm8731_set_dai_fmt, |
| }; |
| |
| static struct snd_soc_dai_driver wm8731_dai = { |
| .name = "wm8731-hifi", |
| .playback = { |
| .stream_name = "Playback", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = WM8731_RATES, |
| .formats = WM8731_FORMATS,}, |
| .capture = { |
| .stream_name = "Capture", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = WM8731_RATES, |
| .formats = WM8731_FORMATS,}, |
| .ops = &wm8731_dai_ops, |
| .symmetric_rates = 1, |
| }; |
| |
| static int wm8731_probe(struct snd_soc_codec *codec) |
| { |
| struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| int ret = 0, i; |
| |
| for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++) |
| wm8731->supplies[i].supply = wm8731_supply_names[i]; |
| |
| ret = devm_regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8731->supplies), |
| wm8731->supplies); |
| if (ret != 0) { |
| dev_err(codec->dev, "Failed to request supplies: %d\n", ret); |
| return ret; |
| } |
| |
| ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies), |
| wm8731->supplies); |
| if (ret != 0) { |
| dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); |
| return ret; |
| } |
| |
| ret = wm8731_reset(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to issue reset: %d\n", ret); |
| goto err_regulator_enable; |
| } |
| |
| wm8731_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| |
| /* Latch the update bits */ |
| snd_soc_update_bits(codec, WM8731_LOUT1V, 0x100, 0); |
| snd_soc_update_bits(codec, WM8731_ROUT1V, 0x100, 0); |
| snd_soc_update_bits(codec, WM8731_LINVOL, 0x100, 0); |
| snd_soc_update_bits(codec, WM8731_RINVOL, 0x100, 0); |
| |
| /* Disable bypass path by default */ |
| snd_soc_update_bits(codec, WM8731_APANA, 0x8, 0); |
| |
| /* Regulators will have been enabled by bias management */ |
| regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); |
| |
| return 0; |
| |
| err_regulator_enable: |
| regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); |
| |
| return ret; |
| } |
| |
| /* power down chip */ |
| static int wm8731_remove(struct snd_soc_codec *codec) |
| { |
| struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec); |
| |
| regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies); |
| |
| return 0; |
| } |
| |
| static struct snd_soc_codec_driver soc_codec_dev_wm8731 = { |
| .probe = wm8731_probe, |
| .remove = wm8731_remove, |
| .set_bias_level = wm8731_set_bias_level, |
| .suspend_bias_off = true, |
| |
| .dapm_widgets = wm8731_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets), |
| .dapm_routes = wm8731_intercon, |
| .num_dapm_routes = ARRAY_SIZE(wm8731_intercon), |
| .controls = wm8731_snd_controls, |
| .num_controls = ARRAY_SIZE(wm8731_snd_controls), |
| }; |
| |
| static const struct of_device_id wm8731_of_match[] = { |
| { .compatible = "wlf,wm8731", }, |
| { } |
| }; |
| |
| MODULE_DEVICE_TABLE(of, wm8731_of_match); |
| |
| static const struct regmap_config wm8731_regmap = { |
| .reg_bits = 7, |
| .val_bits = 9, |
| |
| .max_register = WM8731_RESET, |
| .volatile_reg = wm8731_volatile, |
| .writeable_reg = wm8731_writeable, |
| |
| .cache_type = REGCACHE_RBTREE, |
| .reg_defaults = wm8731_reg_defaults, |
| .num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults), |
| }; |
| |
| #if defined(CONFIG_SPI_MASTER) |
| static int wm8731_spi_probe(struct spi_device *spi) |
| { |
| struct wm8731_priv *wm8731; |
| int ret; |
| |
| wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL); |
| if (wm8731 == NULL) |
| return -ENOMEM; |
| |
| mutex_init(&wm8731->lock); |
| |
| wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap); |
| if (IS_ERR(wm8731->regmap)) { |
| ret = PTR_ERR(wm8731->regmap); |
| dev_err(&spi->dev, "Failed to allocate register map: %d\n", |
| ret); |
| return ret; |
| } |
| |
| spi_set_drvdata(spi, wm8731); |
| |
| ret = snd_soc_register_codec(&spi->dev, |
| &soc_codec_dev_wm8731, &wm8731_dai, 1); |
| if (ret != 0) { |
| dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int wm8731_spi_remove(struct spi_device *spi) |
| { |
| snd_soc_unregister_codec(&spi->dev); |
| return 0; |
| } |
| |
| static struct spi_driver wm8731_spi_driver = { |
| .driver = { |
| .name = "wm8731", |
| .owner = THIS_MODULE, |
| .of_match_table = wm8731_of_match, |
| }, |
| .probe = wm8731_spi_probe, |
| .remove = wm8731_spi_remove, |
| }; |
| #endif /* CONFIG_SPI_MASTER */ |
| |
| #if IS_ENABLED(CONFIG_I2C) |
| static int wm8731_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct wm8731_priv *wm8731; |
| int ret; |
| |
| wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv), |
| GFP_KERNEL); |
| if (wm8731 == NULL) |
| return -ENOMEM; |
| |
| mutex_init(&wm8731->lock); |
| |
| wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap); |
| if (IS_ERR(wm8731->regmap)) { |
| ret = PTR_ERR(wm8731->regmap); |
| dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
| ret); |
| return ret; |
| } |
| |
| i2c_set_clientdata(i2c, wm8731); |
| |
| ret = snd_soc_register_codec(&i2c->dev, |
| &soc_codec_dev_wm8731, &wm8731_dai, 1); |
| if (ret != 0) { |
| dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret); |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int wm8731_i2c_remove(struct i2c_client *client) |
| { |
| snd_soc_unregister_codec(&client->dev); |
| return 0; |
| } |
| |
| static const struct i2c_device_id wm8731_i2c_id[] = { |
| { "wm8731", 0 }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); |
| |
| static struct i2c_driver wm8731_i2c_driver = { |
| .driver = { |
| .name = "wm8731", |
| .owner = THIS_MODULE, |
| .of_match_table = wm8731_of_match, |
| }, |
| .probe = wm8731_i2c_probe, |
| .remove = wm8731_i2c_remove, |
| .id_table = wm8731_i2c_id, |
| }; |
| #endif |
| |
| static int __init wm8731_modinit(void) |
| { |
| int ret = 0; |
| #if IS_ENABLED(CONFIG_I2C) |
| ret = i2c_add_driver(&wm8731_i2c_driver); |
| if (ret != 0) { |
| printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n", |
| ret); |
| } |
| #endif |
| #if defined(CONFIG_SPI_MASTER) |
| ret = spi_register_driver(&wm8731_spi_driver); |
| if (ret != 0) { |
| printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n", |
| ret); |
| } |
| #endif |
| return ret; |
| } |
| module_init(wm8731_modinit); |
| |
| static void __exit wm8731_exit(void) |
| { |
| #if IS_ENABLED(CONFIG_I2C) |
| i2c_del_driver(&wm8731_i2c_driver); |
| #endif |
| #if defined(CONFIG_SPI_MASTER) |
| spi_unregister_driver(&wm8731_spi_driver); |
| #endif |
| } |
| module_exit(wm8731_exit); |
| |
| MODULE_DESCRIPTION("ASoC WM8731 driver"); |
| MODULE_AUTHOR("Richard Purdie"); |
| MODULE_LICENSE("GPL"); |