/* * wm8988.c -- WM8988 ALSA SoC audio driver * * Copyright 2009 Wolfson Microelectronics plc * Copyright 2005 Openedhand Ltd. * * Author: Mark Brown * * 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 #include #include "wm8988.h" /* * wm8988 register cache * We can't read the WM8988 register space when we * are using 2 wire for device control, so we cache them instead. */ static const u16 wm8988_reg[] = { 0x0097, 0x0097, 0x0079, 0x0079, /* 0 */ 0x0000, 0x0008, 0x0000, 0x000a, /* 4 */ 0x0000, 0x0000, 0x00ff, 0x00ff, /* 8 */ 0x000f, 0x000f, 0x0000, 0x0000, /* 12 */ 0x0000, 0x007b, 0x0000, 0x0032, /* 16 */ 0x0000, 0x00c3, 0x00c3, 0x00c0, /* 20 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 24 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 28 */ 0x0000, 0x0000, 0x0050, 0x0050, /* 32 */ 0x0050, 0x0050, 0x0050, 0x0050, /* 36 */ 0x0079, 0x0079, 0x0079, /* 40 */ }; /* codec private data */ struct wm8988_priv { unsigned int sysclk; enum snd_soc_control_type control_type; struct snd_pcm_hw_constraint_list *sysclk_constraints; u16 reg_cache[WM8988_NUM_REG]; }; #define wm8988_reset(c) snd_soc_write(c, WM8988_RESET, 0) /* * WM8988 Controls */ static const char *bass_boost_txt[] = {"Linear Control", "Adaptive Boost"}; static const struct soc_enum bass_boost = SOC_ENUM_SINGLE(WM8988_BASS, 7, 2, bass_boost_txt); static const char *bass_filter_txt[] = { "130Hz @ 48kHz", "200Hz @ 48kHz" }; static const struct soc_enum bass_filter = SOC_ENUM_SINGLE(WM8988_BASS, 6, 2, bass_filter_txt); static const char *treble_txt[] = {"8kHz", "4kHz"}; static const struct soc_enum treble = SOC_ENUM_SINGLE(WM8988_TREBLE, 6, 2, treble_txt); static const char *stereo_3d_lc_txt[] = {"200Hz", "500Hz"}; static const struct soc_enum stereo_3d_lc = SOC_ENUM_SINGLE(WM8988_3D, 5, 2, stereo_3d_lc_txt); static const char *stereo_3d_uc_txt[] = {"2.2kHz", "1.5kHz"}; static const struct soc_enum stereo_3d_uc = SOC_ENUM_SINGLE(WM8988_3D, 6, 2, stereo_3d_uc_txt); static const char *stereo_3d_func_txt[] = {"Capture", "Playback"}; static const struct soc_enum stereo_3d_func = SOC_ENUM_SINGLE(WM8988_3D, 7, 2, stereo_3d_func_txt); static const char *alc_func_txt[] = {"Off", "Right", "Left", "Stereo"}; static const struct soc_enum alc_func = SOC_ENUM_SINGLE(WM8988_ALC1, 7, 4, alc_func_txt); static const char *ng_type_txt[] = {"Constant PGA Gain", "Mute ADC Output"}; static const struct soc_enum ng_type = SOC_ENUM_SINGLE(WM8988_NGATE, 1, 2, ng_type_txt); static const char *deemph_txt[] = {"None", "32Khz", "44.1Khz", "48Khz"}; static const struct soc_enum deemph = SOC_ENUM_SINGLE(WM8988_ADCDAC, 1, 4, deemph_txt); static const char *adcpol_txt[] = {"Normal", "L Invert", "R Invert", "L + R Invert"}; static const struct soc_enum adcpol = SOC_ENUM_SINGLE(WM8988_ADCDAC, 5, 4, adcpol_txt); static const DECLARE_TLV_DB_SCALE(pga_tlv, -1725, 75, 0); static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1); static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1); static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0); static const struct snd_kcontrol_new wm8988_snd_controls[] = { SOC_ENUM("Bass Boost", bass_boost), SOC_ENUM("Bass Filter", bass_filter), SOC_SINGLE("Bass Volume", WM8988_BASS, 0, 15, 1), SOC_SINGLE("Treble Volume", WM8988_TREBLE, 0, 15, 0), SOC_ENUM("Treble Cut-off", treble), SOC_SINGLE("3D Switch", WM8988_3D, 0, 1, 0), SOC_SINGLE("3D Volume", WM8988_3D, 1, 15, 0), SOC_ENUM("3D Lower Cut-off", stereo_3d_lc), SOC_ENUM("3D Upper Cut-off", stereo_3d_uc), SOC_ENUM("3D Mode", stereo_3d_func), SOC_SINGLE("ALC Capture Target Volume", WM8988_ALC1, 0, 7, 0), SOC_SINGLE("ALC Capture Max Volume", WM8988_ALC1, 4, 7, 0), SOC_ENUM("ALC Capture Function", alc_func), SOC_SINGLE("ALC Capture ZC Switch", WM8988_ALC2, 7, 1, 0), SOC_SINGLE("ALC Capture Hold Time", WM8988_ALC2, 0, 15, 0), SOC_SINGLE("ALC Capture Decay Time", WM8988_ALC3, 4, 15, 0), SOC_SINGLE("ALC Capture Attack Time", WM8988_ALC3, 0, 15, 0), SOC_SINGLE("ALC Capture NG Threshold", WM8988_NGATE, 3, 31, 0), SOC_ENUM("ALC Capture NG Type", ng_type), SOC_SINGLE("ALC Capture NG Switch", WM8988_NGATE, 0, 1, 0), SOC_SINGLE("ZC Timeout Switch", WM8988_ADCTL1, 0, 1, 0), SOC_DOUBLE_R_TLV("Capture Digital Volume", WM8988_LADC, WM8988_RADC, 0, 255, 0, adc_tlv), SOC_DOUBLE_R_TLV("Capture Volume", WM8988_LINVOL, WM8988_RINVOL, 0, 63, 0, pga_tlv), SOC_DOUBLE_R("Capture ZC Switch", WM8988_LINVOL, WM8988_RINVOL, 6, 1, 0), SOC_DOUBLE_R("Capture Switch", WM8988_LINVOL, WM8988_RINVOL, 7, 1, 1), SOC_ENUM("Playback De-emphasis", deemph), SOC_ENUM("Capture Polarity", adcpol), SOC_SINGLE("Playback 6dB Attenuate", WM8988_ADCDAC, 7, 1, 0), SOC_SINGLE("Capture 6dB Attenuate", WM8988_ADCDAC, 8, 1, 0), SOC_DOUBLE_R_TLV("PCM Volume", WM8988_LDAC, WM8988_RDAC, 0, 255, 0, dac_tlv), SOC_SINGLE_TLV("Left Mixer Left Bypass Volume", WM8988_LOUTM1, 4, 7, 1, bypass_tlv), SOC_SINGLE_TLV("Left Mixer Right Bypass Volume", WM8988_LOUTM2, 4, 7, 1, bypass_tlv), SOC_SINGLE_TLV("Right Mixer Left Bypass Volume", WM8988_ROUTM1, 4, 7, 1, bypass_tlv), SOC_SINGLE_TLV("Right Mixer Right Bypass Volume", WM8988_ROUTM2, 4, 7, 1, bypass_tlv), SOC_DOUBLE_R("Output 1 Playback ZC Switch", WM8988_LOUT1V, WM8988_ROUT1V, 7, 1, 0), SOC_DOUBLE_R_TLV("Output 1 Playback Volume", WM8988_LOUT1V, WM8988_ROUT1V, 0, 127, 0, out_tlv), SOC_DOUBLE_R("Output 2 Playback ZC Switch", WM8988_LOUT2V, WM8988_ROUT2V, 7, 1, 0), SOC_DOUBLE_R_TLV("Output 2 Playback Volume", WM8988_LOUT2V, WM8988_ROUT2V, 0, 127, 0, out_tlv), }; /* * DAPM Controls */ static int wm8988_lrc_control(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; u16 adctl2 = snd_soc_read(codec, WM8988_ADCTL2); /* Use the DAC to gate LRC if active, otherwise use ADC */ if (snd_soc_read(codec, WM8988_PWR2) & 0x180) adctl2 &= ~0x4; else adctl2 |= 0x4; return snd_soc_write(codec, WM8988_ADCTL2, adctl2); } static const char *wm8988_line_texts[] = { "Line 1", "Line 2", "PGA", "Differential"}; static const unsigned int wm8988_line_values[] = { 0, 1, 3, 4}; static const struct soc_enum wm8988_lline_enum = SOC_VALUE_ENUM_SINGLE(WM8988_LOUTM1, 0, 7, ARRAY_SIZE(wm8988_line_texts), wm8988_line_texts, wm8988_line_values); static const struct snd_kcontrol_new wm8988_left_line_controls = SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum); static const struct soc_enum wm8988_rline_enum = SOC_VALUE_ENUM_SINGLE(WM8988_ROUTM1, 0, 7, ARRAY_SIZE(wm8988_line_texts), wm8988_line_texts, wm8988_line_values); static const struct snd_kcontrol_new wm8988_right_line_controls = SOC_DAPM_VALUE_ENUM("Route", wm8988_lline_enum); /* Left Mixer */ static const struct snd_kcontrol_new wm8988_left_mixer_controls[] = { SOC_DAPM_SINGLE("Playback Switch", WM8988_LOUTM1, 8, 1, 0), SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_LOUTM1, 7, 1, 0), SOC_DAPM_SINGLE("Right Playback Switch", WM8988_LOUTM2, 8, 1, 0), SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_LOUTM2, 7, 1, 0), }; /* Right Mixer */ static const struct snd_kcontrol_new wm8988_right_mixer_controls[] = { SOC_DAPM_SINGLE("Left Playback Switch", WM8988_ROUTM1, 8, 1, 0), SOC_DAPM_SINGLE("Left Bypass Switch", WM8988_ROUTM1, 7, 1, 0), SOC_DAPM_SINGLE("Playback Switch", WM8988_ROUTM2, 8, 1, 0), SOC_DAPM_SINGLE("Right Bypass Switch", WM8988_ROUTM2, 7, 1, 0), }; static const char *wm8988_pga_sel[] = {"Line 1", "Line 2", "Differential"}; static const unsigned int wm8988_pga_val[] = { 0, 1, 3 }; /* Left PGA Mux */ static const struct soc_enum wm8988_lpga_enum = SOC_VALUE_ENUM_SINGLE(WM8988_LADCIN, 6, 3, ARRAY_SIZE(wm8988_pga_sel), wm8988_pga_sel, wm8988_pga_val); static const struct snd_kcontrol_new wm8988_left_pga_controls = SOC_DAPM_VALUE_ENUM("Route", wm8988_lpga_enum); /* Right PGA Mux */ static const struct soc_enum wm8988_rpga_enum = SOC_VALUE_ENUM_SINGLE(WM8988_RADCIN, 6, 3, ARRAY_SIZE(wm8988_pga_sel), wm8988_pga_sel, wm8988_pga_val); static const struct snd_kcontrol_new wm8988_right_pga_controls = SOC_DAPM_VALUE_ENUM("Route", wm8988_rpga_enum); /* Differential Mux */ static const char *wm8988_diff_sel[] = {"Line 1", "Line 2"}; static const struct soc_enum diffmux = SOC_ENUM_SINGLE(WM8988_ADCIN, 8, 2, wm8988_diff_sel); static const struct snd_kcontrol_new wm8988_diffmux_controls = SOC_DAPM_ENUM("Route", diffmux); /* Mono ADC Mux */ static const char *wm8988_mono_mux[] = {"Stereo", "Mono (Left)", "Mono (Right)", "Digital Mono"}; static const struct soc_enum monomux = SOC_ENUM_SINGLE(WM8988_ADCIN, 6, 4, wm8988_mono_mux); static const struct snd_kcontrol_new wm8988_monomux_controls = SOC_DAPM_ENUM("Route", monomux); static const struct snd_soc_dapm_widget wm8988_dapm_widgets[] = { SND_SOC_DAPM_MICBIAS("Mic Bias", WM8988_PWR1, 1, 0), SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0, &wm8988_diffmux_controls), SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0, &wm8988_monomux_controls), SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0, &wm8988_monomux_controls), SND_SOC_DAPM_MUX("Left PGA Mux", WM8988_PWR1, 5, 0, &wm8988_left_pga_controls), SND_SOC_DAPM_MUX("Right PGA Mux", WM8988_PWR1, 4, 0, &wm8988_right_pga_controls), SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0, &wm8988_left_line_controls), SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0, &wm8988_right_line_controls), SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8988_PWR1, 2, 0), SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8988_PWR1, 3, 0), SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8988_PWR2, 7, 0), SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8988_PWR2, 8, 0), SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0, &wm8988_left_mixer_controls[0], ARRAY_SIZE(wm8988_left_mixer_controls)), SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0, &wm8988_right_mixer_controls[0], ARRAY_SIZE(wm8988_right_mixer_controls)), SND_SOC_DAPM_PGA("Right Out 2", WM8988_PWR2, 3, 0, NULL, 0), SND_SOC_DAPM_PGA("Left Out 2", WM8988_PWR2, 4, 0, NULL, 0), SND_SOC_DAPM_PGA("Right Out 1", WM8988_PWR2, 5, 0, NULL, 0), SND_SOC_DAPM_PGA("Left Out 1", WM8988_PWR2, 6, 0, NULL, 0), SND_SOC_DAPM_POST("LRC control", wm8988_lrc_control), SND_SOC_DAPM_OUTPUT("LOUT1"), SND_SOC_DAPM_OUTPUT("ROUT1"), SND_SOC_DAPM_OUTPUT("LOUT2"), SND_SOC_DAPM_OUTPUT("ROUT2"), SND_SOC_DAPM_OUTPUT("VREF"), SND_SOC_DAPM_INPUT("LINPUT1"), SND_SOC_DAPM_INPUT("LINPUT2"), SND_SOC_DAPM_INPUT("RINPUT1"), SND_SOC_DAPM_INPUT("RINPUT2"), }; static const struct snd_soc_dapm_route audio_map[] = { { "Left Line Mux", "Line 1", "LINPUT1" }, { "Left Line Mux", "Line 2", "LINPUT2" }, { "Left Line Mux", "PGA", "Left PGA Mux" }, { "Left Line Mux", "Differential", "Differential Mux" }, { "Right Line Mux", "Line 1", "RINPUT1" }, { "Right Line Mux", "Line 2", "RINPUT2" }, { "Right Line Mux", "PGA", "Right PGA Mux" }, { "Right Line Mux", "Differential", "Differential Mux" }, { "Left PGA Mux", "Line 1", "LINPUT1" }, { "Left PGA Mux", "Line 2", "LINPUT2" }, { "Left PGA Mux", "Differential", "Differential Mux" }, { "Right PGA Mux", "Line 1", "RINPUT1" }, { "Right PGA Mux", "Line 2", "RINPUT2" }, { "Right PGA Mux", "Differential", "Differential Mux" }, { "Differential Mux", "Line 1", "LINPUT1" }, { "Differential Mux", "Line 1", "RINPUT1" }, { "Differential Mux", "Line 2", "LINPUT2" }, { "Differential Mux", "Line 2", "RINPUT2" }, { "Left ADC Mux", "Stereo", "Left PGA Mux" }, { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" }, { "Left ADC Mux", "Digital Mono", "Left PGA Mux" }, { "Right ADC Mux", "Stereo", "Right PGA Mux" }, { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" }, { "Right ADC Mux", "Digital Mono", "Right PGA Mux" }, { "Left ADC", NULL, "Left ADC Mux" }, { "Right ADC", NULL, "Right ADC Mux" }, { "Left Line Mux", "Line 1", "LINPUT1" }, { "Left Line Mux", "Line 2", "LINPUT2" }, { "Left Line Mux", "PGA", "Left PGA Mux" }, { "Left Line Mux", "Differential", "Differential Mux" }, { "Right Line Mux", "Line 1", "RINPUT1" }, { "Right Line Mux", "Line 2", "RINPUT2" }, { "Right Line Mux", "PGA", "Right PGA Mux" }, { "Right Line Mux", "Differential", "Differential Mux" }, { "Left Mixer", "Playback Switch", "Left DAC" }, { "Left Mixer", "Left Bypass Switch", "Left Line Mux" }, { "Left Mixer", "Right Playback Switch", "Right DAC" }, { "Left Mixer", "Right Bypass Switch", "Right Line Mux" }, { "Right Mixer", "Left Playback Switch", "Left DAC" }, { "Right Mixer", "Left Bypass Switch", "Left Line Mux" }, { "Right Mixer", "Playback Switch", "Right DAC" }, { "Right Mixer", "Right Bypass Switch", "Right Line Mux" }, { "Left Out 1", NULL, "Left Mixer" }, { "LOUT1", NULL, "Left Out 1" }, { "Right Out 1", NULL, "Right Mixer" }, { "ROUT1", NULL, "Right Out 1" }, { "Left Out 2", NULL, "Left Mixer" }, { "LOUT2", NULL, "Left Out 2" }, { "Right Out 2", NULL, "Right Mixer" }, { "ROUT2", NULL, "Right Out 2" }, }; struct _coeff_div { u32 mclk; u32 rate; u16 fs; u8 sr:5; u8 usb:1; }; /* codec hifi mclk clock divider coefficients */ static const struct _coeff_div coeff_div[] = { /* 8k */ {12288000, 8000, 1536, 0x6, 0x0}, {11289600, 8000, 1408, 0x16, 0x0}, {18432000, 8000, 2304, 0x7, 0x0}, {16934400, 8000, 2112, 0x17, 0x0}, {12000000, 8000, 1500, 0x6, 0x1}, /* 11.025k */ {11289600, 11025, 1024, 0x18, 0x0}, {16934400, 11025, 1536, 0x19, 0x0}, {12000000, 11025, 1088, 0x19, 0x1}, /* 16k */ {12288000, 16000, 768, 0xa, 0x0}, {18432000, 16000, 1152, 0xb, 0x0}, {12000000, 16000, 750, 0xa, 0x1}, /* 22.05k */ {11289600, 22050, 512, 0x1a, 0x0}, {16934400, 22050, 768, 0x1b, 0x0}, {12000000, 22050, 544, 0x1b, 0x1}, /* 32k */ {12288000, 32000, 384, 0xc, 0x0}, {18432000, 32000, 576, 0xd, 0x0}, {12000000, 32000, 375, 0xa, 0x1}, /* 44.1k */ {11289600, 44100, 256, 0x10, 0x0}, {16934400, 44100, 384, 0x11, 0x0}, {12000000, 44100, 272, 0x11, 0x1}, /* 48k */ {12288000, 48000, 256, 0x0, 0x0}, {18432000, 48000, 384, 0x1, 0x0}, {12000000, 48000, 250, 0x0, 0x1}, /* 88.2k */ {11289600, 88200, 128, 0x1e, 0x0}, {16934400, 88200, 192, 0x1f, 0x0}, {12000000, 88200, 136, 0x1f, 0x1}, /* 96k */ {12288000, 96000, 128, 0xe, 0x0}, {18432000, 96000, 192, 0xf, 0x0}, {12000000, 96000, 125, 0xe, 0x1}, }; 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 -EINVAL; } /* The set of rates we can generate from the above for each SYSCLK */ static unsigned int rates_12288[] = { 8000, 12000, 16000, 24000, 24000, 32000, 48000, 96000, }; static struct snd_pcm_hw_constraint_list constraints_12288 = { .count = ARRAY_SIZE(rates_12288), .list = rates_12288, }; static unsigned int rates_112896[] = { 8000, 11025, 22050, 44100, }; static struct snd_pcm_hw_constraint_list constraints_112896 = { .count = ARRAY_SIZE(rates_112896), .list = rates_112896, }; static unsigned int rates_12[] = { 8000, 11025, 12000, 16000, 22050, 2400, 32000, 41100, 48000, 48000, 88235, 96000, }; static struct snd_pcm_hw_constraint_list constraints_12 = { .count = ARRAY_SIZE(rates_12), .list = rates_12, }; /* * Note that this should be called from init rather than from hw_params. */ static int wm8988_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 wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec); switch (freq) { case 11289600: case 18432000: case 22579200: case 36864000: wm8988->sysclk_constraints = &constraints_112896; wm8988->sysclk = freq; return 0; case 12288000: case 16934400: case 24576000: case 33868800: wm8988->sysclk_constraints = &constraints_12288; wm8988->sysclk = freq; return 0; case 12000000: case 24000000: wm8988->sysclk_constraints = &constraints_12; wm8988->sysclk = freq; return 0; } return -EINVAL; } static int wm8988_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; } snd_soc_write(codec, WM8988_IFACE, iface); return 0; } static int wm8988_pcm_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec); /* The set of sample rates that can be supported depends on the * MCLK supplied to the CODEC - enforce this. */ if (!wm8988->sysclk) { dev_err(codec->dev, "No MCLK configured, call set_sysclk() on init\n"); return -EINVAL; } snd_pcm_hw_constraint_list(substream->runtime, 0, SNDRV_PCM_HW_PARAM_RATE, wm8988->sysclk_constraints); return 0; } static int wm8988_pcm_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_codec *codec = rtd->codec; struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec); u16 iface = snd_soc_read(codec, WM8988_IFACE) & 0x1f3; u16 srate = snd_soc_read(codec, WM8988_SRATE) & 0x180; int coeff; coeff = get_coeff(wm8988->sysclk, params_rate(params)); if (coeff < 0) { coeff = get_coeff(wm8988->sysclk / 2, params_rate(params)); srate |= 0x40; } if (coeff < 0) { dev_err(codec->dev, "Unable to configure sample rate %dHz with %dHz MCLK\n", params_rate(params), wm8988->sysclk); return coeff; } /* 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; case SNDRV_PCM_FORMAT_S32_LE: iface |= 0x000c; break; } /* set iface & srate */ snd_soc_write(codec, WM8988_IFACE, iface); if (coeff >= 0) snd_soc_write(codec, WM8988_SRATE, srate | (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb); return 0; } static int wm8988_mute(struct snd_soc_dai *dai, int mute) { struct snd_soc_codec *codec = dai->codec; u16 mute_reg = snd_soc_read(codec, WM8988_ADCDAC) & 0xfff7; if (mute) snd_soc_write(codec, WM8988_ADCDAC, mute_reg | 0x8); else snd_soc_write(codec, WM8988_ADCDAC, mute_reg); return 0; } static int wm8988_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { u16 pwr_reg = snd_soc_read(codec, WM8988_PWR1) & ~0x1c1; switch (level) { case SND_SOC_BIAS_ON: break; case SND_SOC_BIAS_PREPARE: /* VREF, VMID=2x50k, digital enabled */ snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x00c0); break; case SND_SOC_BIAS_STANDBY: if (codec->bias_level == SND_SOC_BIAS_OFF) { /* VREF, VMID=2x5k */ snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x1c1); /* Charge caps */ msleep(100); } /* VREF, VMID=2*500k, digital stopped */ snd_soc_write(codec, WM8988_PWR1, pwr_reg | 0x0141); break; case SND_SOC_BIAS_OFF: snd_soc_write(codec, WM8988_PWR1, 0x0000); break; } codec->bias_level = level; return 0; } #define WM8988_RATES SNDRV_PCM_RATE_8000_96000 #define WM8988_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_LE) static struct snd_soc_dai_ops wm8988_ops = { .startup = wm8988_pcm_startup, .hw_params = wm8988_pcm_hw_params, .set_fmt = wm8988_set_dai_fmt, .set_sysclk = wm8988_set_dai_sysclk, .digital_mute = wm8988_mute, }; static struct snd_soc_dai_driver wm8988_dai = { .name = "wm8988-hifi", .playback = { .stream_name = "Playback", .channels_min = 1, .channels_max = 2, .rates = WM8988_RATES, .formats = WM8988_FORMATS, }, .capture = { .stream_name = "Capture", .channels_min = 1, .channels_max = 2, .rates = WM8988_RATES, .formats = WM8988_FORMATS, }, .ops = &wm8988_ops, .symmetric_rates = 1, }; static int wm8988_suspend(struct snd_soc_codec *codec, pm_message_t state) { wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; } static int wm8988_resume(struct snd_soc_codec *codec) { int i; u8 data[2]; u16 *cache = codec->reg_cache; /* Sync reg_cache with the hardware */ for (i = 0; i < WM8988_NUM_REG; i++) { if (i == WM8988_RESET) continue; data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); data[1] = cache[i] & 0x00ff; codec->hw_write(codec->control_data, data, 2); } wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY); return 0; } static int wm8988_probe(struct snd_soc_codec *codec) { struct wm8988_priv *wm8988 = snd_soc_codec_get_drvdata(codec); int ret = 0; u16 reg; ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8988->control_type); if (ret < 0) { dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); return ret; } ret = wm8988_reset(codec); if (ret < 0) { dev_err(codec->dev, "Failed to issue reset\n"); return ret; } /* set the update bits (we always update left then right) */ reg = snd_soc_read(codec, WM8988_RADC); snd_soc_write(codec, WM8988_RADC, reg | 0x100); reg = snd_soc_read(codec, WM8988_RDAC); snd_soc_write(codec, WM8988_RDAC, reg | 0x0100); reg = snd_soc_read(codec, WM8988_ROUT1V); snd_soc_write(codec, WM8988_ROUT1V, reg | 0x0100); reg = snd_soc_read(codec, WM8988_ROUT2V); snd_soc_write(codec, WM8988_ROUT2V, reg | 0x0100); reg = snd_soc_read(codec, WM8988_RINVOL); snd_soc_write(codec, WM8988_RINVOL, reg | 0x0100); wm8988_set_bias_level(codec, SND_SOC_BIAS_STANDBY); snd_soc_add_controls(codec, wm8988_snd_controls, ARRAY_SIZE(wm8988_snd_controls)); snd_soc_dapm_new_controls(codec, wm8988_dapm_widgets, ARRAY_SIZE(wm8988_dapm_widgets)); snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); return 0; } static int wm8988_remove(struct snd_soc_codec *codec) { wm8988_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; } static struct snd_soc_codec_driver soc_codec_dev_wm8988 = { .probe = wm8988_probe, .remove = wm8988_remove, .suspend = wm8988_suspend, .resume = wm8988_resume, .set_bias_level = wm8988_set_bias_level, .reg_cache_size = ARRAY_SIZE(wm8988_reg), .reg_word_size = sizeof(u16), .reg_cache_default = wm8988_reg, }; #if defined(CONFIG_SPI_MASTER) static int __devinit wm8988_spi_probe(struct spi_device *spi) { struct wm8988_priv *wm8988; int ret; wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL); if (wm8988 == NULL) return -ENOMEM; wm8988->control_type = SND_SOC_SPI; spi_set_drvdata(spi, wm8988); ret = snd_soc_register_codec(&spi->dev, &soc_codec_dev_wm8988, &wm8988_dai, 1); if (ret < 0) kfree(wm8988); return ret; } static int __devexit wm8988_spi_remove(struct spi_device *spi) { snd_soc_unregister_codec(&spi->dev); kfree(spi_get_drvdata(spi)); return 0; } static struct spi_driver wm8988_spi_driver = { .driver = { .name = "wm8988-codec", .bus = &spi_bus_type, .owner = THIS_MODULE, }, .probe = wm8988_spi_probe, .remove = __devexit_p(wm8988_spi_remove), }; #endif /* CONFIG_SPI_MASTER */ #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) static __devinit int wm8988_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct wm8988_priv *wm8988; int ret; wm8988 = kzalloc(sizeof(struct wm8988_priv), GFP_KERNEL); if (wm8988 == NULL) return -ENOMEM; i2c_set_clientdata(i2c, wm8988); wm8988->control_type = SND_SOC_I2C; ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_wm8988, &wm8988_dai, 1); if (ret < 0) kfree(wm8988); return ret; } static __devexit int wm8988_i2c_remove(struct i2c_client *client) { snd_soc_unregister_codec(&client->dev); kfree(i2c_get_clientdata(client)); return 0; } static const struct i2c_device_id wm8988_i2c_id[] = { { "wm8988", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, wm8988_i2c_id); static struct i2c_driver wm8988_i2c_driver = { .driver = { .name = "wm8988-codec", .owner = THIS_MODULE, }, .probe = wm8988_i2c_probe, .remove = __devexit_p(wm8988_i2c_remove), .id_table = wm8988_i2c_id, }; #endif static int __init wm8988_modinit(void) { int ret = 0; #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) ret = i2c_add_driver(&wm8988_i2c_driver); if (ret != 0) { printk(KERN_ERR "Failed to register WM8988 I2C driver: %d\n", ret); } #endif #if defined(CONFIG_SPI_MASTER) ret = spi_register_driver(&wm8988_spi_driver); if (ret != 0) { printk(KERN_ERR "Failed to register WM8988 SPI driver: %d\n", ret); } #endif return ret; } module_init(wm8988_modinit); static void __exit wm8988_exit(void) { #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) i2c_del_driver(&wm8988_i2c_driver); #endif #if defined(CONFIG_SPI_MASTER) spi_unregister_driver(&wm8988_spi_driver); #endif } module_exit(wm8988_exit); MODULE_DESCRIPTION("ASoC WM8988 driver"); MODULE_AUTHOR("Mark Brown "); MODULE_LICENSE("GPL");