diff options
Diffstat (limited to 'sound/soc/codecs/wm8770.c')
| -rw-r--r-- | sound/soc/codecs/wm8770.c | 749 |
1 files changed, 749 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8770.c b/sound/soc/codecs/wm8770.c new file mode 100644 index 0000000..19b92ba --- /dev/null +++ b/sound/soc/codecs/wm8770.c @@ -0,0 +1,749 @@ +/* + * wm8770.c -- WM8770 ALSA SoC Audio driver + * + * Copyright 2010 Wolfson Microelectronics plc + * + * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> + * + * 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/platform_device.h> +#include <linux/spi/spi.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.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 "wm8770.h" + +#define WM8770_NUM_SUPPLIES 3 +static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = { + "AVDD1", + "AVDD2", + "DVDD" +}; + +static const u16 wm8770_reg_defs[WM8770_CACHEREGNUM] = { + 0x7f, 0x7f, 0x7f, 0x7f, + 0x7f, 0x7f, 0x7f, 0x7f, + 0x7f, 0xff, 0xff, 0xff, + 0xff, 0xff, 0xff, 0xff, + 0xff, 0xff, 0, 0x90, 0, + 0, 0x22, 0x22, 0x3e, + 0xc, 0xc, 0x100, 0x189, + 0x189, 0x8770 +}; + +struct wm8770_priv { + enum snd_soc_control_type control_type; + struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES]; + struct notifier_block disable_nb[WM8770_NUM_SUPPLIES]; + struct snd_soc_codec *codec; + int sysclk; +}; + +static int vout12supply_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event); +static int vout34supply_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event); + +/* + * We can't use the same notifier block for more than one supply and + * there's no way I can see to get from a callback to the caller + * except container_of(). + */ +#define WM8770_REGULATOR_EVENT(n) \ +static int wm8770_regulator_event_##n(struct notifier_block *nb, \ + unsigned long event, void *data) \ +{ \ + struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \ + disable_nb[n]); \ + if (event & REGULATOR_EVENT_DISABLE) { \ + wm8770->codec->cache_sync = 1; \ + } \ + return 0; \ +} + +WM8770_REGULATOR_EVENT(0) +WM8770_REGULATOR_EVENT(1) +WM8770_REGULATOR_EVENT(2) + +static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0); +static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1); +static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1); + +static const char *dac_phase_text[][2] = { + { "DAC1 Normal", "DAC1 Inverted" }, + { "DAC2 Normal", "DAC2 Inverted" }, + { "DAC3 Normal", "DAC3 Inverted" }, + { "DAC4 Normal", "DAC4 Inverted" }, +}; + +static const struct soc_enum dac_phase[] = { + SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]), + SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]), + SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]), + SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]), +}; + +static const struct snd_kcontrol_new wm8770_snd_controls[] = { + /* global DAC playback controls */ + SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0, + dac_dig_tlv), + SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1), + SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0), + + /* global VOUT playback controls */ + SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0, + dac_alg_tlv), + SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0), + + /* VOUT1/2/3/4 specific controls */ + SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL, + WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv), + SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL, + WM8770_VOUT1RVOL, 7, 1, 0), + SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL, + WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv), + SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL, + WM8770_VOUT2RVOL, 7, 1, 0), + SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL, + WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv), + SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL, + WM8770_VOUT3RVOL, 7, 1, 0), + SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL, + WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv), + SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL, + WM8770_VOUT4RVOL, 7, 1, 0), + + /* DAC1/2/3/4 specific controls */ + SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL, + WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv), + SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0), + SOC_ENUM("DAC1 Phase", dac_phase[0]), + SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL, + WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv), + SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0), + SOC_ENUM("DAC2 Phase", dac_phase[1]), + SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL, + WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv), + SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0), + SOC_ENUM("DAC3 Phase", dac_phase[2]), + SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL, + WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv), + SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0), + SOC_ENUM("DAC4 Phase", dac_phase[3]), + + /* ADC specific controls */ + SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL, + 0, 31, 0, adc_tlv), + SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL, + 5, 1, 1), + + /* other controls */ + SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0), + SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1) +}; + +static const char *ain_text[] = { + "AIN1", "AIN2", "AIN3", "AIN4", + "AIN5", "AIN6", "AIN7", "AIN8" +}; + +static const struct soc_enum ain_enum = + SOC_ENUM_DOUBLE(WM8770_ADCMUX, 0, 4, 8, ain_text); + +static const struct snd_kcontrol_new ain_mux = + SOC_DAPM_ENUM("Capture Mux", ain_enum); + +static const struct snd_kcontrol_new vout1_mix_controls[] = { + SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0), + SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0), + SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0) +}; + +static const struct snd_kcontrol_new vout2_mix_controls[] = { + SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0), + SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0), + SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0) +}; + +static const struct snd_kcontrol_new vout3_mix_controls[] = { + SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0), + SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0), + SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0) +}; + +static const struct snd_kcontrol_new vout4_mix_controls[] = { + SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0), + SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0) +}; + +static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = { + SND_SOC_DAPM_INPUT("AUX1"), + SND_SOC_DAPM_INPUT("AUX2"), + SND_SOC_DAPM_INPUT("AUX3"), + + SND_SOC_DAPM_INPUT("AIN1"), + SND_SOC_DAPM_INPUT("AIN2"), + SND_SOC_DAPM_INPUT("AIN3"), + SND_SOC_DAPM_INPUT("AIN4"), + SND_SOC_DAPM_INPUT("AIN5"), + SND_SOC_DAPM_INPUT("AIN6"), + SND_SOC_DAPM_INPUT("AIN7"), + SND_SOC_DAPM_INPUT("AIN8"), + + SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux), + + SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1), + + SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1), + SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1), + SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1), + SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1), + + SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0, + vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0, + vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), + + SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0, + vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)), + SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0, + vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)), + SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0, + vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)), + SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0, + vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)), + + SND_SOC_DAPM_OUTPUT("VOUT1"), + SND_SOC_DAPM_OUTPUT("VOUT2"), + SND_SOC_DAPM_OUTPUT("VOUT3"), + SND_SOC_DAPM_OUTPUT("VOUT4") +}; + +static const struct snd_soc_dapm_route wm8770_intercon[] = { + { "Capture Mux", "AIN1", "AIN1" }, + { "Capture Mux", "AIN2", "AIN2" }, + { "Capture Mux", "AIN3", "AIN3" }, + { "Capture Mux", "AIN4", "AIN4" }, + { "Capture Mux", "AIN5", "AIN5" }, + { "Capture Mux", "AIN6", "AIN6" }, + { "Capture Mux", "AIN7", "AIN7" }, + { "Capture Mux", "AIN8", "AIN8" }, + + { "ADC", NULL, "Capture Mux" }, + + { "VOUT1 Mixer", NULL, "VOUT12 Supply" }, + { "VOUT1 Mixer", "DAC1 Switch", "DAC1" }, + { "VOUT1 Mixer", "AUX1 Switch", "AUX1" }, + { "VOUT1 Mixer", "Bypass Switch", "Capture Mux" }, + + { "VOUT2 Mixer", NULL, "VOUT12 Supply" }, + { "VOUT2 Mixer", "DAC2 Switch", "DAC2" }, + { "VOUT2 Mixer", "AUX2 Switch", "AUX2" }, + { "VOUT2 Mixer", "Bypass Switch", "Capture Mux" }, + + { "VOUT3 Mixer", NULL, "VOUT34 Supply" }, + { "VOUT3 Mixer", "DAC3 Switch", "DAC3" }, + { "VOUT3 Mixer", "AUX3 Switch", "AUX3" }, + { "VOUT3 Mixer", "Bypass Switch", "Capture Mux" }, + + { "VOUT4 Mixer", NULL, "VOUT34 Supply" }, + { "VOUT4 Mixer", "DAC4 Switch", "DAC4" }, + { "VOUT4 Mixer", "Bypass Switch", "Capture Mux" }, + + { "VOUT1", NULL, "VOUT1 Mixer" }, + { "VOUT2", NULL, "VOUT2 Mixer" }, + { "VOUT3", NULL, "VOUT3 Mixer" }, + { "VOUT4", NULL, "VOUT4 Mixer" } +}; + +static int vout12supply_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec; + + codec = w->codec; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0); + break; + case SND_SOC_DAPM_POST_PMD: + snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0x180); + break; + } + + return 0; +} + +static int vout34supply_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec; + + codec = w->codec; + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0); + break; + case SND_SOC_DAPM_POST_PMD: + snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0x180); + break; + } + + return 0; +} + +static int wm8770_reset(struct snd_soc_codec *codec) +{ + return snd_soc_write(codec, WM8770_RESET, 0); +} + +static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_codec *codec; + int iface, master; + + codec = dai->codec; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + master = 0x100; + break; + case SND_SOC_DAIFMT_CBS_CFS: + master = 0; + break; + default: + return -EINVAL; + } + + iface = 0; + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + iface |= 0x2; + break; + case SND_SOC_DAIFMT_RIGHT_J: + break; + case SND_SOC_DAIFMT_LEFT_J: + iface |= 0x1; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_IB_IF: + iface |= 0xc; + break; + case SND_SOC_DAIFMT_IB_NF: + iface |= 0x8; + break; + case SND_SOC_DAIFMT_NB_IF: + iface |= 0x4; + break; + default: + return -EINVAL; + } + + snd_soc_update_bits(codec, WM8770_IFACECTRL, 0xf, iface); + snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x100, master); + + return 0; +} + +static const int mclk_ratios[] = { + 128, + 192, + 256, + 384, + 512, + 768 +}; + +static int wm8770_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec; + struct wm8770_priv *wm8770; + int i; + int iface; + int shift; + int ratio; + + codec = dai->codec; + wm8770 = snd_soc_codec_get_drvdata(codec); + + iface = 0; + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + break; + case SNDRV_PCM_FORMAT_S20_3LE: + iface |= 0x10; + break; + case SNDRV_PCM_FORMAT_S24_LE: + iface |= 0x20; + break; + case SNDRV_PCM_FORMAT_S32_LE: + iface |= 0x30; + break; + } + + switch (substream->stream) { + case SNDRV_PCM_STREAM_PLAYBACK: + i = 0; + shift = 4; + break; + case SNDRV_PCM_STREAM_CAPTURE: + i = 2; + shift = 0; + break; + default: + return -EINVAL; + } + + /* Only need to set MCLK/LRCLK ratio if we're master */ + if (snd_soc_read(codec, WM8770_MSTRCTRL) & 0x100) { + for (; i < ARRAY_SIZE(mclk_ratios); ++i) { + ratio = wm8770->sysclk / params_rate(params); + if (ratio == mclk_ratios[i]) + break; + } + + if (i == ARRAY_SIZE(mclk_ratios)) { + dev_err(codec->dev, + "Unable to configure MCLK ratio %d/%d\n", + wm8770->sysclk, params_rate(params)); + return -EINVAL; + } + + dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]); + + snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x7 << shift, + i << shift); + } + + snd_soc_update_bits(codec, WM8770_IFACECTRL, 0x30, iface); + + return 0; +} + +static int wm8770_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec; + + codec = dai->codec; + return snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, + !!mute << 4); +} + +static int wm8770_set_sysclk(struct snd_soc_dai *dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_codec *codec; + struct wm8770_priv *wm8770; + + codec = dai->codec; + wm8770 = snd_soc_codec_get_drvdata(codec); + wm8770->sysclk = freq; + return 0; +} + +static void wm8770_sync_cache(struct snd_soc_codec *codec) +{ + int i; + u16 *cache; + + if (!codec->cache_sync) + return; + + codec->cache_only = 0; + cache = codec->reg_cache; + for (i = 0; i < codec->driver->reg_cache_size; i++) { + if (i == WM8770_RESET || cache[i] == wm8770_reg_defs[i]) + continue; + snd_soc_write(codec, i, cache[i]); + } + codec->cache_sync = 0; +} + +static int wm8770_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + int ret; + struct wm8770_priv *wm8770; + + wm8770 = snd_soc_codec_get_drvdata(codec); + + 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(wm8770->supplies), + wm8770->supplies); + if (ret) { + dev_err(codec->dev, + "Failed to enable supplies: %d\n", + ret); + return ret; + } + wm8770_sync_cache(codec); + /* global powerup */ + snd_soc_write(codec, WM8770_PWDNCTRL, 0); + } + break; + case SND_SOC_BIAS_OFF: + /* global powerdown */ + snd_soc_write(codec, WM8770_PWDNCTRL, 1); + regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), + wm8770->supplies); + break; + } + + codec->dapm.bias_level = level; + return 0; +} + +#define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_ops wm8770_dai_ops = { + .digital_mute = wm8770_mute, + .hw_params = wm8770_hw_params, + .set_fmt = wm8770_set_fmt, + .set_sysclk = wm8770_set_sysclk, +}; + +static struct snd_soc_dai_driver wm8770_dai = { + .name = "wm8770-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_192000, + .formats = WM8770_FORMATS + }, + .capture = { + .stream_name = "Capture", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_96000, + .formats = WM8770_FORMATS + }, + .ops = &wm8770_dai_ops, + .symmetric_rates = 1 +}; + +#ifdef CONFIG_PM +static int wm8770_suspend(struct snd_soc_codec *codec, pm_message_t state) +{ + wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF); + return 0; +} + +static int wm8770_resume(struct snd_soc_codec *codec) +{ + wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + return 0; +} +#else +#define wm8770_suspend NULL +#define wm8770_resume NULL +#endif + +static int wm8770_probe(struct snd_soc_codec *codec) +{ + struct wm8770_priv *wm8770; + int ret; + int i; + + wm8770 = snd_soc_codec_get_drvdata(codec); + wm8770->codec = codec; + + codec->dapm.idle_bias_off = 1; + + ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8770->control_type); + if (ret < 0) { + dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); + return ret; + } + + for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) + wm8770->supplies[i].supply = wm8770_supply_names[i]; + + ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8770->supplies), + wm8770->supplies); + if (ret) { + dev_err(codec->dev, "Failed to request supplies: %d\n", ret); + return ret; + } + + wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0; + wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1; + wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2; + + /* This should really be moved into the regulator core */ + for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) { + ret = regulator_register_notifier(wm8770->supplies[i].consumer, + &wm8770->disable_nb[i]); + if (ret) { + dev_err(codec->dev, + "Failed to register regulator notifier: %d\n", + ret); + } + } + + ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies), + wm8770->supplies); + if (ret) { + dev_err(codec->dev, "Failed to enable supplies: %d\n", ret); + goto err_reg_get; + } + + ret = wm8770_reset(codec); + if (ret < 0) { + dev_err(codec->dev, "Failed to issue reset: %d\n", ret); + goto err_reg_enable; + } + + wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + + /* latch the volume update bits */ + snd_soc_update_bits(codec, WM8770_MSDIGVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_MSALGVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_VOUT1RVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_VOUT2RVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_VOUT3RVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_VOUT4RVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_DAC1RVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_DAC2RVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_DAC3RVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8770_DAC4RVOL, 0x100, 0x100); + + /* mute all DACs */ + snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 0x10); + + snd_soc_add_controls(codec, wm8770_snd_controls, + ARRAY_SIZE(wm8770_snd_controls)); + snd_soc_dapm_new_controls(&codec->dapm, wm8770_dapm_widgets, + ARRAY_SIZE(wm8770_dapm_widgets)); + snd_soc_dapm_add_routes(&codec->dapm, wm8770_intercon, + ARRAY_SIZE(wm8770_intercon)); + return 0; + +err_reg_enable: + regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies); +err_reg_get: + regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies); + return ret; +} + +static int wm8770_remove(struct snd_soc_codec *codec) +{ + struct wm8770_priv *wm8770; + int i; + + wm8770 = snd_soc_codec_get_drvdata(codec); + wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF); + + for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i) + regulator_unregister_notifier(wm8770->supplies[i].consumer, + &wm8770->disable_nb[i]); + regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies); + return 0; +} + +static struct snd_soc_codec_driver soc_codec_dev_wm8770 = { + .probe = wm8770_probe, + .remove = wm8770_remove, + .suspend = wm8770_suspend, + .resume = wm8770_resume, + .set_bias_level = wm8770_set_bias_level, + .reg_cache_size = ARRAY_SIZE(wm8770_reg_defs), + .reg_word_size = sizeof (u16), + .reg_cache_default = wm8770_reg_defs +}; + +#if defined(CONFIG_SPI_MASTER) +static int __devinit wm8770_spi_probe(struct spi_device *spi) +{ + struct wm8770_priv *wm8770; + int ret; + + wm8770 = kzalloc(sizeof(struct wm8770_priv), GFP_KERNEL); + if (!wm8770) + return -ENOMEM; + + wm8770->control_type = SND_SOC_SPI; + spi_set_drvdata(spi, wm8770); + + ret = snd_soc_register_codec(&spi->dev, + &soc_codec_dev_wm8770, &wm8770_dai, 1); + if (ret < 0) + kfree(wm8770); + return ret; +} + +static int __devexit wm8770_spi_remove(struct spi_device *spi) +{ + snd_soc_unregister_codec(&spi->dev); + kfree(spi_get_drvdata(spi)); + return 0; +} + +static struct spi_driver wm8770_spi_driver = { + .driver = { + .name = "wm8770", + .owner = THIS_MODULE, + }, + .probe = wm8770_spi_probe, + .remove = __devexit_p(wm8770_spi_remove) +}; +#endif + +static int __init wm8770_modinit(void) +{ + int ret = 0; + +#if defined(CONFIG_SPI_MASTER) + ret = spi_register_driver(&wm8770_spi_driver); + if (ret) { + printk(KERN_ERR "Failed to register wm8770 SPI driver: %d\n", + ret); + } +#endif + return ret; +} +module_init(wm8770_modinit); + +static void __exit wm8770_exit(void) +{ +#if defined(CONFIG_SPI_MASTER) + spi_unregister_driver(&wm8770_spi_driver); +#endif +} +module_exit(wm8770_exit); + +MODULE_DESCRIPTION("ASoC WM8770 driver"); +MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>"); +MODULE_LICENSE("GPL"); |