wm8960 linux codec 代码,修改过了,支持录音.doc

/* * wm8960.c - WM8960 ALSA SoC Audio driver * * Copyright 2007-11 Wolfson Microelectronics, plc * * Author: 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include wm8960.h/* R25 - Power 1 */#define WM8960_VMID_MASK 0x180#define WM8960_VREF 0x40/* R26 - Power 2 */#define WM8960_PWR2_LOUT10x40#define WM8960_PWR2_ROUT10x20#define WM8960_PWR2_OUT30x02/* R28 - Anti-pop 1 */#define WM8960_POBCTRL 0x80#define WM8960_BUFDCOPEN 0x10#define WM8960_BUFIOEN 0x08#define WM8960_SOFT_ST 0x04#define WM8960_HPSTBY 0x01/* R29 - Anti-pop 2 */#define WM8960_DISOP 0x40#define WM8960_DRES_MASK 0x30/* * wm8960 register cache * We cant read the WM8960 register space when we are * using 2 wire for device control, so we cache them instead. */static const u16 wm8960_regWM8960_CACHEREGNUM = 0x0097, 0x0097, 0x0000, 0x0000,0x0000, 0x0008, 0x0000, 0x000a,0x01c0, 0x0000, 0x00ff, 0x00ff,0x0000, 0x0000, 0x0000, 0x0000,0x0000, 0x007b, 0x0100, 0x0032,0x0000, 0x00c3, 0x00c3, 0x01c0,0x0000, 0x0000, 0x0000, 0x0000,0x0000, 0x0000, 0x0000, 0x0000,0x0100, 0x0100, 0x0050, 0x0050,0x0050, 0x0050, 0x0000, 0x0000,0x0000, 0x0000, 0x0040, 0x0000,0x0000, 0x0050, 0x0050, 0x0000,0x0002, 0x0037, 0x004d, 0x0080,0x0008, 0x0031, 0x0026, 0x00e9,;struct wm8960_priv enum snd_soc_control_type control_type;int (*set_bias_level)(struct snd_soc_codec *, enum snd_soc_bias_level level);struct snd_soc_dapm_widget *lout1;struct snd_soc_dapm_widget *rout1;struct snd_soc_dapm_widget *out3;bool deemph;int playback_fs;#define wm8960_reset(c)snd_soc_write(c, WM8960_RESET, 0)/* enumerated controls */static const char *wm8960_polarity = No Inversion, Left Inverted,Right Inverted, Stereo Inversion;static const char *wm8960_3d_upper_cutoff = High, Low;static const char *wm8960_3d_lower_cutoff = Low, High;static const char *wm8960_alcfunc = Off, Right, Left, Stereo;static const char *wm8960_alcmode = ALC, Limiter;static const struct soc_enum wm8960_enum = SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),;static const int deemph_settings = 0, 32000, 44100, 48000 ;static int wm8960_set_deemph(struct snd_soc_codec *codec)struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);int val, i, best;/* If were using deemphasis select the nearest available sample * rate. */if (wm8960-deemph) best = 1;for (i = 2; i playback_fs) playback_fs)best = i;val = best dev, Set deemphasis %dn, val);return snd_soc_update_bits(codec, WM8960_DACCTL1, 0x6, val);static int wm8960_get_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);ucontrol-value.enumerated.item0 = wm8960-deemph;return 0;static int wm8960_put_deemph(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);int deemph = ucontrol-value.enumerated.item0;if (deemph 1)return -EINVAL;wm8960-deemph = deemph;return wm8960_set_deemph(codec);static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);static const struct snd_kcontrol_new wm8960_snd_controls = SOC_DOUBLE_R_TLV(Capture Volume, WM8960_LINVOL, WM8960_RINVOL, 0, 63, 0, adc_tlv),SOC_DOUBLE_R(Capture Volume ZC Switch, WM8960_LINVOL, WM8960_RINVOL,6, 1, 0),SOC_DOUBLE_R(Capture Mute Switch, WM8960_LINVOL, WM8960_RINVOL,7, 1, 0),SOC_DOUBLE_R_TLV(Playback Volume, WM8960_LDAC, WM8960_RDAC, 0, 255, 0, dac_tlv),SOC_DOUBLE_R_TLV(ADC Digital Volume, WM8960_LADC, WM8960_RADC, 0, 255, 0, dac_tlv),SOC_DOUBLE_R_TLV(Headphone Playback Volume, WM8960_LOUT1, WM8960_ROUT1, 0, 127, 0, out_tlv),SOC_DOUBLE_R(Headphone Playback ZC Switch, WM8960_LOUT1, WM8960_ROUT1,7, 1, 0),SOC_DOUBLE_R_TLV(Speaker Playback Volume, WM8960_LOUT2, WM8960_ROUT2, 0, 127, 0, out_tlv),SOC_DOUBLE_R(Speaker Playback ZC Switch, WM8960_LOUT2, WM8960_ROUT2,7, 1, 0),SOC_SINGLE(Speaker DC Volume, WM8960_CLASSD3, 3, 5, 0),SOC_SINGLE(Speaker AC Volume, WM8960_CLASSD3, 0, 5, 0),SOC_SINGLE(PCM Playback -6dB Switch, WM8960_DACCTL1, 7, 1, 0),SOC_ENUM(ADC Polarity, wm8960_enum0),SOC_SINGLE(ADC High Pass Filter Switch, WM8960_DACCTL1, 0, 1, 0),SOC_ENUM(DAC Polarity, wm8960_enum2),SOC_SINGLE_BOOL_EXT(DAC Deemphasis Switch, 0, wm8960_get_deemph, wm8960_put_deemph),SOC_ENUM(3D Filter Upper Cut-Off, wm8960_enum2),SOC_ENUM(3D Filter Lower Cut-Off, wm8960_enum3),SOC_SINGLE(3D Volume, WM8960_3D, 1, 15, 0),SOC_SINGLE(3D Switch, WM8960_3D, 0, 1, 0),SOC_ENUM(ALC Function, wm8960_enum4),SOC_SINGLE(ALC Max Gain, WM8960_ALC1, 4, 7, 0),SOC_SINGLE(ALC Target, WM8960_ALC1, 0, 15, 1),SOC_SINGLE(ALC Min Gain, WM8960_ALC2, 4, 7, 0),SOC_SINGLE(ALC Hold Time, WM8960_ALC2, 0, 15, 0),SOC_ENUM(ALC Mode, wm8960_enum5),SOC_SINGLE(ALC Decay, WM8960_ALC3, 4, 15, 0),SOC_SINGLE(ALC Attack, WM8960_ALC3, 0, 15, 0),SOC_SINGLE(Noise Gate Threshold, WM8960_NOISEG, 3, 31, 0),SOC_SINGLE(Noise Gate Switch, WM8960_NOISEG, 0, 1, 0),SOC_DOUBLE_R(Mic Boot Gain, WM8960_LINPATH, WM8960_RINPATH,4, 3, 0),SOC_SINGLE_TLV(Left Output Mixer Boost Bypass Volume, WM8960_BYPASS1, 4, 7, 1, bypass_tlv),SOC_SINGLE_TLV(Left Output Mixer LINPUT3 Volume, WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),SOC_SINGLE_TLV(Right Output Mixer Boost Bypass Volume, WM8960_BYPASS2, 4, 7, 1, bypass_tlv),SOC_SINGLE_TLV(Right Output Mixer RINPUT3 Volume, WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),/add by lyqSOC_SINGLE(MICB Switch, WM8960_POWER1, 1, 1, 0),;static const struct snd_kcontrol_new wm8960_lin_boost = SOC_DAPM_SINGLE(LINPUT2 Switch, WM8960_LINPATH, 6, 1, 0),SOC_DAPM_SINGLE(LINPUT3 Switch, WM8960_LINPATH, 7, 1, 0),SOC_DAPM_SINGLE(LINPUT1 Switch, WM8960_LINPATH, 8, 1, 0),;static const struct snd_kcontrol_new wm8960_lin = SOC_DAPM_SINGLE(Boost Switch, WM8960_LINPATH, 3, 1, 0),;static const struct snd_kcontrol_new wm8960_rin_boost = SOC_DAPM_SINGLE(RINPUT2 Switch, WM8960_RINPATH, 6, 1, 0),SOC_DAPM_SINGLE(RINPUT3 Switch, WM8960_RINPATH, 7, 1, 0),SOC_DAPM_SINGLE(RINPUT1 Switch, WM8960_RINPATH, 8, 1, 0),;static const struct snd_kcontrol_new wm8960_rin = SOC_DAPM_SINGLE(Boost Switch, WM8960_RINPATH, 3, 1, 0),;static const struct snd_kcontrol_new wm8960_loutput_mixer = SOC_DAPM_SINGLE(PCM Playback Switch, WM8960_LOUTMIX, 8, 1, 0),SOC_DAPM_SINGLE(LINPUT3 Switch, WM8960_LOUTMIX, 7, 1, 0),SOC_DAPM_SINGLE(Boost Bypass Switch, WM8960_BYPASS1, 7, 1, 0),;static const struct snd_kcontrol_new wm8960_routput_mixer = SOC_DAPM_SINGLE(PCM Playback Switch, WM8960_ROUTMIX, 8, 1, 0),SOC_DAPM_SINGLE(RINPUT3 Switch, WM8960_ROUTMIX, 7, 1, 0),SOC_DAPM_SINGLE(Boost Bypass Switch, WM8960_BYPASS2, 7, 1, 0),;static const struct snd_kcontrol_new wm8960_mono_out = SOC_DAPM_SINGLE(Left Switch, WM8960_MONOMIX1, 7, 1, 0),SOC_DAPM_SINGLE(Right Switch, WM8960_MONOMIX2, 7, 1, 0),;static const struct snd_soc_dapm_widget wm8960_dapm_widgets = SND_SOC_DAPM_INPUT(LINPUT1),SND_SOC_DAPM_INPUT(RINPUT1),SND_SOC_DAPM_INPUT(LINPUT2),SND_SOC_DAPM_INPUT(RINPUT2),SND_SOC_DAPM_INPUT(LINPUT3),SND_SOC_DAPM_INPUT(RINPUT3),SND_SOC_DAPM_SUPPLY(MICB, WM8960_POWER1, 1, 0, NULL, 0),SND_SOC_DAPM_MIXER(Left Boost Mixer, WM8960_POWER1, 5, 0, wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost),SND_SOC_DAPM_MIXER(Right Boost Mixer, WM8960_POWER1, 4, 0, wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost),SND_SOC_DAPM_MIXER(Left Input Mixer, WM8960_POWER3, 5, 0, wm8960_lin, ARRAY_SIZE(wm8960_lin),SND_SOC_DAPM_MIXER(Right Input Mixer, WM8960_POWER3, 4, 0, wm8960_rin, ARRAY_SIZE(wm8960_rin),SND_SOC_DAPM_ADC(Left ADC, Capture, WM8960_POWER1, 3, 0),SND_SOC_DAPM_ADC(Right ADC, Capture, WM8960_POWER1, 2, 0),SND_SOC_DAPM_DAC(Left DAC, Playback, WM8960_POWER2, 8, 0),SND_SOC_DAPM_DAC(Right DAC, Playback, WM8960_POWER2, 7, 0),SND_SOC_DAPM_MIXER(Left Output Mixer, WM8960_POWER3, 3, 0,&wm8960_loutput_mixer0,ARRAY_SIZE(wm8960_loutput_mixer),SND_SOC_DAPM_MIXER(Right Output Mixer, WM8960_POWER3, 2, 0,&wm8960_routput_mixer0,ARRAY_SIZE(wm8960_routput_mixer),SND_SOC_DAPM_PGA(LOUT1 PGA, WM8960_POWER2, 6, 0, NULL, 0),SND_SOC_DAPM_PGA(ROUT1 PGA, WM8960_POWER2, 5, 0, NULL, 0),SND_SOC_DAPM_PGA(Left Speaker PGA, WM8960_POWER2, 4, 0, NULL, 0),SND_SOC_DAPM_PGA(Right Speaker PGA, WM8960_POWER2, 3, 0, NULL, 0),SND_SOC_DAPM_PGA(Right Speaker Output, WM8960_CLASSD1, 7, 0, NULL, 0),SND_SOC_DAPM_PGA(Left Speaker Output, WM8960_CLASSD1, 6, 0, NULL, 0),SND_SOC_DAPM_OUTPUT(SPK_LP),SND_SOC_DAPM_OUTPUT(SPK_LN),SND_SOC_DAPM_OUTPUT(HP_L),SND_SOC_DAPM_OUTPUT(HP_R),SND_SOC_DAPM_OUTPUT(SPK_RP),SND_SOC_DAPM_OUTPUT(SPK_RN),SND_SOC_DAPM_OUTPUT(OUT3),;static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3 = SND_SOC_DAPM_MIXER(Mono Output Mixer, WM8960_POWER2, 1, 0,&wm8960_mono_out0,ARRAY_SIZE(wm8960_mono_out),;/* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless = SND_SOC_DAPM_PGA(OUT3 VMID, WM8960_POWER2, 1, 0, NULL, 0),;static const struct snd_soc_dapm_route audio_paths = Left Boost Mixer, LINPUT1 Switch, LINPUT1 , Left Boost Mixer, LINPUT2 Switch, LINPUT2 , Left Boost Mixer, LINPUT3 Switch, LINPUT3 , Left Input Mixer, Boost Switch, Left Boost Mixer, , Left Input Mixer, NULL, LINPUT1, , /* Really Boost Switch */ Left Input Mixer, NULL, LINPUT2 , Left Input Mixer, NULL, LINPUT3 , Right Boost Mixer, RINPUT1 Switch, RINPUT1 , Right Boost Mixer, RINPUT2 Switch, RINPUT2 , Right Boost Mixer, RINPUT3 Switch, RINPUT3 , Right Input Mixer, Boost Switch, Right Boost Mixer, , Right Input Mixer, NULL, RINPUT1, , /* Really Boost Switch */ Right Input Mixer, NULL, RINPUT2 , Right Input Mixer, NULL, LINPUT3 , Left ADC, NULL, Left Input Mixer , Right ADC, NULL, Right Input Mixer , Left Output Mixer, LINPUT3 Switch, LINPUT3 , Left Output Mixer, Boost Bypass Switch, Left Boost Mixer , Left Output Mixer, PCM Playback Switch, Left DAC , Right Output Mixer, RINPUT3 Switch, RINPUT3 , Right Output Mixer, Boost Bypass Switch, Right Boost Mixer , Right Output Mixer, PCM Playback Switch, Right DAC , LOUT1 PGA, NULL, Left Output Mixer , ROUT1 PGA, NULL, Right Output Mixer , HP_L, NULL, LOUT1 PGA , HP_R, NULL, ROUT1 PGA , Left Speaker PGA, NULL, Left Output Mixer , Right Speaker PGA, NULL, Right Output Mixer , Left Speaker Output, NULL, Left Speaker PGA , Right Speaker Output, NULL, Right Speaker PGA , SPK_LN, NULL, Left Speaker Output , SPK_LP, NULL, Left Speaker Output , SPK_RN, NULL, Right Speaker Output , SPK_RP, NULL, Right Speaker Output ,;static const struct snd_soc_dapm_route audio_paths_out3 = Mono Output Mixer, Left Switch, Left Output Mixer , Mono Output Mixer, Right Switch, Right Output Mixer , OUT3, NULL, Mono Output Mixer, ;static const struct snd_soc_dapm_route audio_paths_capless = HP_L, NULL, OUT3 VMID , HP_R, NULL, OUT3 VMID , OUT3 VMID, NULL, Left Output Mixer , OUT3 VMID, NULL, Right Output Mixer ,;static int wm8960_add_widgets(struct snd_soc_codec *codec)struct wm8960_data *pdata = codec-dev-platform_data;struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);struct snd_soc_dapm_context *dapm = &codec-dapm;struct snd_soc_dapm_widget *w;snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets, ARRAY_SIZE(wm8960_dapm_widgets);snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths);/* In capless mode OUT3 is used to provide VMID for the * headphone outputs, otherwise it is used as a mono mixer. */if (pdata & pdata-capless) snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless, ARRAY_SIZE(wm8960_dapm_widgets_capless);snd_soc_dapm_add_routes(dapm, audio_paths_capless,ARRAY_SIZE(audio_paths_capless); else snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3, ARRAY_SIZE(wm8960_dapm_widgets_out3);snd_soc_dapm_add_routes(dapm, audio_paths_out3,ARRAY_SIZE(audio_paths_out3);/* We need to power up the headphone output stage out of * sequence for capless mode. To save scanning the widget * list each time to find the desired power state do so now * and save the result. */list_for_each_entry(w, &codec-card-widgets, list) if (w-dapm != &codec-dapm)continue;if (strcmp(w-name, LOUT1 PGA) = 0)wm8960-lout1 = w;if (strcmp(w-name, ROUT1 PGA) = 0)wm8960-rout1 = w;if (strcmp(w-name, OUT3 VMID) = 0)wm8960-out3 = w;return 0;static int wm8960_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 |= 0x0003;break;case SND_SOC_DAIFMT_DSP_B:iface |= 0x0013;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, WM8960_IFACE1, iface);return 0;static struct int rate;unsigned int val; alc_rates = 48000, 0 , 44100, 0 , 32000, 1 , 22050, 2 , 24000, 2 , 16000, 3 , 11250, 4 , 12000, 4 , 8000, 5 ,;static int wm8960_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 wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;int i;/* bit size */switch (params_format(params) case SNDRV_PCM_FORMAT_S16_LE:break;case SNDRV_PCM_FORMAT_S20_3LE:iface |= 0x0004;break;case SNDRV_PCM_FORMAT_S24_LE:iface |= 0x0008;break;/* Update filters for the new rate */if (substream-stream = SNDRV_PCM_STREAM_PLAYBACK) wm8960-playback_fs = params_rate(params);wm8960_set_deemph(codec); else for (i = 0; i codec;if (mute)snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);elsesnd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);return 0;static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec, enum snd_soc_bias_level level)switch (level) case SND_SOC_BIAS_ON:break;case SND_SOC_BIAS_PREPARE:/* Set VMID to 2x50k */snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);break;case SND_S