10a1bf553SMark Brown /* 20a1bf553SMark Brown * wm8974.c -- WM8974 ALSA Soc Audio driver 30a1bf553SMark Brown * 48b83a193SMark Brown * Copyright 2006-2009 Wolfson Microelectronics PLC. 50a1bf553SMark Brown * 64fcbbb67SMark Brown * Author: Liam Girdwood <linux@wolfsonmicro.com> 70a1bf553SMark Brown * 80a1bf553SMark Brown * This program is free software; you can redistribute it and/or modify 90a1bf553SMark Brown * it under the terms of the GNU General Public License version 2 as 100a1bf553SMark Brown * published by the Free Software Foundation. 110a1bf553SMark Brown */ 120a1bf553SMark Brown 130a1bf553SMark Brown #include <linux/module.h> 140a1bf553SMark Brown #include <linux/moduleparam.h> 150a1bf553SMark Brown #include <linux/version.h> 160a1bf553SMark Brown #include <linux/kernel.h> 170a1bf553SMark Brown #include <linux/init.h> 180a1bf553SMark Brown #include <linux/delay.h> 190a1bf553SMark Brown #include <linux/pm.h> 200a1bf553SMark Brown #include <linux/i2c.h> 210a1bf553SMark Brown #include <linux/platform_device.h> 220a1bf553SMark Brown #include <sound/core.h> 230a1bf553SMark Brown #include <sound/pcm.h> 240a1bf553SMark Brown #include <sound/pcm_params.h> 250a1bf553SMark Brown #include <sound/soc.h> 260a1bf553SMark Brown #include <sound/soc-dapm.h> 270a1bf553SMark Brown #include <sound/initval.h> 28a5f8d2f1SMark Brown #include <sound/tlv.h> 290a1bf553SMark Brown 300a1bf553SMark Brown #include "wm8974.h" 310a1bf553SMark Brown 320a1bf553SMark Brown static const u16 wm8974_reg[WM8974_CACHEREGNUM] = { 330a1bf553SMark Brown 0x0000, 0x0000, 0x0000, 0x0000, 340a1bf553SMark Brown 0x0050, 0x0000, 0x0140, 0x0000, 350a1bf553SMark Brown 0x0000, 0x0000, 0x0000, 0x00ff, 360a1bf553SMark Brown 0x0000, 0x0000, 0x0100, 0x00ff, 370a1bf553SMark Brown 0x0000, 0x0000, 0x012c, 0x002c, 380a1bf553SMark Brown 0x002c, 0x002c, 0x002c, 0x0000, 390a1bf553SMark Brown 0x0032, 0x0000, 0x0000, 0x0000, 400a1bf553SMark Brown 0x0000, 0x0000, 0x0000, 0x0000, 410a1bf553SMark Brown 0x0038, 0x000b, 0x0032, 0x0000, 420a1bf553SMark Brown 0x0008, 0x000c, 0x0093, 0x00e9, 430a1bf553SMark Brown 0x0000, 0x0000, 0x0000, 0x0000, 440a1bf553SMark Brown 0x0003, 0x0010, 0x0000, 0x0000, 450a1bf553SMark Brown 0x0000, 0x0002, 0x0000, 0x0000, 460a1bf553SMark Brown 0x0000, 0x0000, 0x0039, 0x0000, 470a1bf553SMark Brown 0x0000, 480a1bf553SMark Brown }; 490a1bf553SMark Brown 50df1ef7a3SMark Brown #define WM8974_POWER1_BIASEN 0x08 51df1ef7a3SMark Brown #define WM8974_POWER1_BUFIOEN 0x10 52df1ef7a3SMark Brown 534fcbbb67SMark Brown struct wm8974_priv { 544fcbbb67SMark Brown struct snd_soc_codec codec; 554fcbbb67SMark Brown u16 reg_cache[WM8974_CACHEREGNUM]; 564fcbbb67SMark Brown }; 574fcbbb67SMark Brown 584fcbbb67SMark Brown static struct snd_soc_codec *wm8974_codec; 594fcbbb67SMark Brown 600a1bf553SMark Brown /* 610a1bf553SMark Brown * read wm8974 register cache 620a1bf553SMark Brown */ 630a1bf553SMark Brown static inline unsigned int wm8974_read_reg_cache(struct snd_soc_codec *codec, 640a1bf553SMark Brown unsigned int reg) 650a1bf553SMark Brown { 660a1bf553SMark Brown u16 *cache = codec->reg_cache; 670a1bf553SMark Brown if (reg == WM8974_RESET) 680a1bf553SMark Brown return 0; 690a1bf553SMark Brown if (reg >= WM8974_CACHEREGNUM) 700a1bf553SMark Brown return -1; 710a1bf553SMark Brown return cache[reg]; 720a1bf553SMark Brown } 730a1bf553SMark Brown 740a1bf553SMark Brown /* 750a1bf553SMark Brown * write wm8974 register cache 760a1bf553SMark Brown */ 770a1bf553SMark Brown static inline void wm8974_write_reg_cache(struct snd_soc_codec *codec, 780a1bf553SMark Brown u16 reg, unsigned int value) 790a1bf553SMark Brown { 800a1bf553SMark Brown u16 *cache = codec->reg_cache; 810a1bf553SMark Brown if (reg >= WM8974_CACHEREGNUM) 820a1bf553SMark Brown return; 830a1bf553SMark Brown cache[reg] = value; 840a1bf553SMark Brown } 850a1bf553SMark Brown 860a1bf553SMark Brown /* 870a1bf553SMark Brown * write to the WM8974 register space 880a1bf553SMark Brown */ 890a1bf553SMark Brown static int wm8974_write(struct snd_soc_codec *codec, unsigned int reg, 900a1bf553SMark Brown unsigned int value) 910a1bf553SMark Brown { 920a1bf553SMark Brown u8 data[2]; 930a1bf553SMark Brown 940a1bf553SMark Brown /* data is 950a1bf553SMark Brown * D15..D9 WM8974 register offset 960a1bf553SMark Brown * D8...D0 register data 970a1bf553SMark Brown */ 980a1bf553SMark Brown data[0] = (reg << 1) | ((value >> 8) & 0x0001); 990a1bf553SMark Brown data[1] = value & 0x00ff; 1000a1bf553SMark Brown 1010a1bf553SMark Brown wm8974_write_reg_cache(codec, reg, value); 1020a1bf553SMark Brown if (codec->hw_write(codec->control_data, data, 2) == 2) 1030a1bf553SMark Brown return 0; 1040a1bf553SMark Brown else 1050a1bf553SMark Brown return -EIO; 1060a1bf553SMark Brown } 1070a1bf553SMark Brown 1080a1bf553SMark Brown #define wm8974_reset(c) wm8974_write(c, WM8974_RESET, 0) 1090a1bf553SMark Brown 1100a1bf553SMark Brown static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" }; 1110a1bf553SMark Brown static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" }; 1120a1bf553SMark Brown static const char *wm8974_eqmode[] = {"Capture", "Playback" }; 1130a1bf553SMark Brown static const char *wm8974_bw[] = {"Narrow", "Wide" }; 1140a1bf553SMark Brown static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" }; 1150a1bf553SMark Brown static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" }; 1160a1bf553SMark Brown static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" }; 1170a1bf553SMark Brown static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" }; 1180a1bf553SMark Brown static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" }; 1190a1bf553SMark Brown static const char *wm8974_alc[] = {"ALC", "Limiter" }; 1200a1bf553SMark Brown 1210a1bf553SMark Brown static const struct soc_enum wm8974_enum[] = { 1220a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */ 1230a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */ 1240a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp), 1250a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode), 1260a1bf553SMark Brown 1270a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1), 1280a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw), 1290a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2), 1300a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw), 1310a1bf553SMark Brown 1320a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3), 1330a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw), 1340a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4), 1350a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw), 1360a1bf553SMark Brown 1370a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5), 1380a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc), 1390a1bf553SMark Brown }; 1400a1bf553SMark Brown 141*8a123ee2SMark Brown static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" }; 142*8a123ee2SMark Brown 143*8a123ee2SMark Brown static const struct soc_enum wm8974_auxmode = 144*8a123ee2SMark Brown SOC_ENUM_SINGLE(WM8974_INPUT, 3, 2, wm8974_auxmode_text); 145*8a123ee2SMark Brown 146a5f8d2f1SMark Brown static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1); 147a5f8d2f1SMark Brown static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); 148a5f8d2f1SMark Brown static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0); 149a5f8d2f1SMark Brown static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0); 150a5f8d2f1SMark Brown 1510a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_snd_controls[] = { 1520a1bf553SMark Brown 1530a1bf553SMark Brown SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0), 1540a1bf553SMark Brown 1550a1bf553SMark Brown SOC_ENUM("DAC Companding", wm8974_enum[1]), 1560a1bf553SMark Brown SOC_ENUM("ADC Companding", wm8974_enum[0]), 1570a1bf553SMark Brown 1580a1bf553SMark Brown SOC_ENUM("Playback De-emphasis", wm8974_enum[2]), 1590a1bf553SMark Brown SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0), 1600a1bf553SMark Brown 161a5f8d2f1SMark Brown SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv), 1620a1bf553SMark Brown 1630a1bf553SMark Brown SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0), 1640a1bf553SMark Brown SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0), 1650a1bf553SMark Brown SOC_SINGLE("ADC Inversion Switch", WM8974_COMP, 0, 1, 0), 1660a1bf553SMark Brown 167a5f8d2f1SMark Brown SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv), 1680a1bf553SMark Brown 1690a1bf553SMark Brown SOC_ENUM("Equaliser Function", wm8974_enum[3]), 1700a1bf553SMark Brown SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]), 171a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv), 1720a1bf553SMark Brown 1730a1bf553SMark Brown SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]), 1740a1bf553SMark Brown SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]), 175a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv), 1760a1bf553SMark Brown 1770a1bf553SMark Brown SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]), 1780a1bf553SMark Brown SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]), 179a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv), 1800a1bf553SMark Brown 1810a1bf553SMark Brown SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]), 1820a1bf553SMark Brown SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]), 183a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv), 1840a1bf553SMark Brown 1850a1bf553SMark Brown SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]), 1860a1bf553SMark Brown SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]), 187a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv), 1880a1bf553SMark Brown 1890a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0), 1900a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0), 1910a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0), 1920a1bf553SMark Brown 1930a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0), 1940a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0), 1950a1bf553SMark Brown 1960a1bf553SMark Brown SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0), 1970a1bf553SMark Brown SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0), 1980a1bf553SMark Brown SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0), 1990a1bf553SMark Brown 2000a1bf553SMark Brown SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0), 2010a1bf553SMark Brown SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0), 2020a1bf553SMark Brown SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0), 2030a1bf553SMark Brown 2040a1bf553SMark Brown SOC_ENUM("ALC Capture Mode", wm8974_enum[13]), 2050a1bf553SMark Brown SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0), 2060a1bf553SMark Brown SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0), 2070a1bf553SMark Brown 2080a1bf553SMark Brown SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0), 2090a1bf553SMark Brown SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0), 2100a1bf553SMark Brown 2110a1bf553SMark Brown SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0), 212a5f8d2f1SMark Brown SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv), 2130a1bf553SMark Brown 2140a1bf553SMark Brown SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0), 2150a1bf553SMark Brown SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1), 216*8a123ee2SMark Brown SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv), 217*8a123ee2SMark Brown 218*8a123ee2SMark Brown SOC_ENUM("Aux Mode", wm8974_auxmode), 2190a1bf553SMark Brown 2200a1bf553SMark Brown SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0), 221*8a123ee2SMark Brown SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1), 2220a1bf553SMark Brown }; 2230a1bf553SMark Brown 2240a1bf553SMark Brown /* Speaker Output Mixer */ 2250a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = { 2260a1bf553SMark Brown SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0), 2270a1bf553SMark Brown SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0), 2280a1bf553SMark Brown SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1), 2290a1bf553SMark Brown }; 2300a1bf553SMark Brown 2310a1bf553SMark Brown /* Mono Output Mixer */ 2320a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = { 2330a1bf553SMark Brown SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0), 2340a1bf553SMark Brown SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0), 235*8a123ee2SMark Brown SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0), 236*8a123ee2SMark Brown }; 237*8a123ee2SMark Brown 238*8a123ee2SMark Brown /* Boost mixer */ 239*8a123ee2SMark Brown static const struct snd_kcontrol_new wm8974_boost_mixer[] = { 240*8a123ee2SMark Brown SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0), 241*8a123ee2SMark Brown }; 242*8a123ee2SMark Brown 243*8a123ee2SMark Brown /* Input PGA */ 244*8a123ee2SMark Brown static const struct snd_kcontrol_new wm8974_inpga[] = { 245*8a123ee2SMark Brown SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0), 246*8a123ee2SMark Brown SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0), 247*8a123ee2SMark Brown SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0), 2480a1bf553SMark Brown }; 2490a1bf553SMark Brown 2500a1bf553SMark Brown /* AUX Input boost vol */ 2510a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_aux_boost_controls = 2520a1bf553SMark Brown SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); 2530a1bf553SMark Brown 2540a1bf553SMark Brown /* Mic Input boost vol */ 2550a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_mic_boost_controls = 2560a1bf553SMark Brown SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); 2570a1bf553SMark Brown 2580a1bf553SMark Brown static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { 2590a1bf553SMark Brown SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, 2600a1bf553SMark Brown &wm8974_speaker_mixer_controls[0], 2610a1bf553SMark Brown ARRAY_SIZE(wm8974_speaker_mixer_controls)), 2620a1bf553SMark Brown SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, 2630a1bf553SMark Brown &wm8974_mono_mixer_controls[0], 2640a1bf553SMark Brown ARRAY_SIZE(wm8974_mono_mixer_controls)), 2650a1bf553SMark Brown SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), 266*8a123ee2SMark Brown SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0), 2670a1bf553SMark Brown SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), 2680a1bf553SMark Brown SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), 2690a1bf553SMark Brown SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), 2700a1bf553SMark Brown SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), 2710a1bf553SMark Brown 272*8a123ee2SMark Brown SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga, 273*8a123ee2SMark Brown ARRAY_SIZE(wm8974_inpga)), 274*8a123ee2SMark Brown SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, 275*8a123ee2SMark Brown wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)), 2760a1bf553SMark Brown 2770a1bf553SMark Brown SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), 2780a1bf553SMark Brown 2790a1bf553SMark Brown SND_SOC_DAPM_INPUT("MICN"), 2800a1bf553SMark Brown SND_SOC_DAPM_INPUT("MICP"), 2810a1bf553SMark Brown SND_SOC_DAPM_INPUT("AUX"), 2820a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("MONOOUT"), 2830a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("SPKOUTP"), 2840a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("SPKOUTN"), 2850a1bf553SMark Brown }; 2860a1bf553SMark Brown 2870a1bf553SMark Brown static const struct snd_soc_dapm_route audio_map[] = { 2880a1bf553SMark Brown /* Mono output mixer */ 2890a1bf553SMark Brown {"Mono Mixer", "PCM Playback Switch", "DAC"}, 2900a1bf553SMark Brown {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 2910a1bf553SMark Brown {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 2920a1bf553SMark Brown 2930a1bf553SMark Brown /* Speaker output mixer */ 2940a1bf553SMark Brown {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 2950a1bf553SMark Brown {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 2960a1bf553SMark Brown {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 2970a1bf553SMark Brown 2980a1bf553SMark Brown /* Outputs */ 2990a1bf553SMark Brown {"Mono Out", NULL, "Mono Mixer"}, 3000a1bf553SMark Brown {"MONOOUT", NULL, "Mono Out"}, 3010a1bf553SMark Brown {"SpkN Out", NULL, "Speaker Mixer"}, 3020a1bf553SMark Brown {"SpkP Out", NULL, "Speaker Mixer"}, 3030a1bf553SMark Brown {"SPKOUTN", NULL, "SpkN Out"}, 3040a1bf553SMark Brown {"SPKOUTP", NULL, "SpkP Out"}, 3050a1bf553SMark Brown 3060a1bf553SMark Brown /* Boost Mixer */ 307*8a123ee2SMark Brown {"ADC", NULL, "Boost Mixer"}, 308*8a123ee2SMark Brown {"Boost Mixer", "Aux Switch", "Aux Input"}, 309*8a123ee2SMark Brown {"Boost Mixer", NULL, "Input PGA"}, 310*8a123ee2SMark Brown {"Boost Mixer", NULL, "MICP"}, 311*8a123ee2SMark Brown 312*8a123ee2SMark Brown /* Input PGA */ 313*8a123ee2SMark Brown {"Input PGA", "Aux Switch", "Aux Input"}, 314*8a123ee2SMark Brown {"Input PGA", "MicN Switch", "MICN"}, 315*8a123ee2SMark Brown {"Input PGA", "MicP Switch", "MICP"}, 3160a1bf553SMark Brown 3170a1bf553SMark Brown /* Inputs */ 318*8a123ee2SMark Brown {"Aux Input", NULL, "AUX"}, 3190a1bf553SMark Brown }; 3200a1bf553SMark Brown 3210a1bf553SMark Brown static int wm8974_add_widgets(struct snd_soc_codec *codec) 3220a1bf553SMark Brown { 3230a1bf553SMark Brown snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, 3240a1bf553SMark Brown ARRAY_SIZE(wm8974_dapm_widgets)); 3250a1bf553SMark Brown 3260a1bf553SMark Brown snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 3270a1bf553SMark Brown 3280a1bf553SMark Brown snd_soc_dapm_new_widgets(codec); 3290a1bf553SMark Brown return 0; 3300a1bf553SMark Brown } 3310a1bf553SMark Brown 3320a1bf553SMark Brown struct pll_ { 33391d0c3ecSMark Brown unsigned int pre_div:4; /* prescale - 1 */ 3340a1bf553SMark Brown unsigned int n:4; 3350a1bf553SMark Brown unsigned int k; 3360a1bf553SMark Brown }; 3370a1bf553SMark Brown 33891d0c3ecSMark Brown static struct pll_ pll_div; 33991d0c3ecSMark Brown 34091d0c3ecSMark Brown /* The size in bits of the pll divide multiplied by 10 34191d0c3ecSMark Brown * to allow rounding later */ 34291d0c3ecSMark Brown #define FIXED_PLL_SIZE ((1 << 24) * 10) 34391d0c3ecSMark Brown 34491d0c3ecSMark Brown static void pll_factors(unsigned int target, unsigned int source) 34591d0c3ecSMark Brown { 34691d0c3ecSMark Brown unsigned long long Kpart; 34791d0c3ecSMark Brown unsigned int K, Ndiv, Nmod; 34891d0c3ecSMark Brown 34991d0c3ecSMark Brown Ndiv = target / source; 35091d0c3ecSMark Brown if (Ndiv < 6) { 35191d0c3ecSMark Brown source >>= 1; 35291d0c3ecSMark Brown pll_div.pre_div = 1; 35391d0c3ecSMark Brown Ndiv = target / source; 35491d0c3ecSMark Brown } else 35591d0c3ecSMark Brown pll_div.pre_div = 0; 35691d0c3ecSMark Brown 35791d0c3ecSMark Brown if ((Ndiv < 6) || (Ndiv > 12)) 35891d0c3ecSMark Brown printk(KERN_WARNING 3598b83a193SMark Brown "WM8974 N value %u outwith recommended range!\n", 36091d0c3ecSMark Brown Ndiv); 36191d0c3ecSMark Brown 36291d0c3ecSMark Brown pll_div.n = Ndiv; 36391d0c3ecSMark Brown Nmod = target % source; 36491d0c3ecSMark Brown Kpart = FIXED_PLL_SIZE * (long long)Nmod; 36591d0c3ecSMark Brown 36691d0c3ecSMark Brown do_div(Kpart, source); 36791d0c3ecSMark Brown 36891d0c3ecSMark Brown K = Kpart & 0xFFFFFFFF; 36991d0c3ecSMark Brown 37091d0c3ecSMark Brown /* Check if we need to round */ 37191d0c3ecSMark Brown if ((K % 10) >= 5) 37291d0c3ecSMark Brown K += 5; 37391d0c3ecSMark Brown 37491d0c3ecSMark Brown /* Move down to proper range now rounding is done */ 37591d0c3ecSMark Brown K /= 10; 37691d0c3ecSMark Brown 37791d0c3ecSMark Brown pll_div.k = K; 37891d0c3ecSMark Brown } 3790a1bf553SMark Brown 3800a1bf553SMark Brown static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, 3810a1bf553SMark Brown int pll_id, unsigned int freq_in, unsigned int freq_out) 3820a1bf553SMark Brown { 3830a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 3840a1bf553SMark Brown u16 reg; 3850a1bf553SMark Brown 3860a1bf553SMark Brown if (freq_in == 0 || freq_out == 0) { 38791d0c3ecSMark Brown /* Clock CODEC directly from MCLK */ 38891d0c3ecSMark Brown reg = wm8974_read_reg_cache(codec, WM8974_CLOCK); 38991d0c3ecSMark Brown wm8974_write(codec, WM8974_CLOCK, reg & 0x0ff); 39091d0c3ecSMark Brown 39191d0c3ecSMark Brown /* Turn off PLL */ 3920a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_POWER1); 3930a1bf553SMark Brown wm8974_write(codec, WM8974_POWER1, reg & 0x1df); 3940a1bf553SMark Brown return 0; 3950a1bf553SMark Brown } 3960a1bf553SMark Brown 39791d0c3ecSMark Brown pll_factors(freq_out*4, freq_in); 39891d0c3ecSMark Brown 39991d0c3ecSMark Brown wm8974_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n); 40091d0c3ecSMark Brown wm8974_write(codec, WM8974_PLLK1, pll_div.k >> 18); 40191d0c3ecSMark Brown wm8974_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff); 40291d0c3ecSMark Brown wm8974_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff); 4030a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_POWER1); 4040a1bf553SMark Brown wm8974_write(codec, WM8974_POWER1, reg | 0x020); 4051a55b3f6SMark Brown 40691d0c3ecSMark Brown /* Run CODEC from PLL instead of MCLK */ 40791d0c3ecSMark Brown reg = wm8974_read_reg_cache(codec, WM8974_CLOCK); 40891d0c3ecSMark Brown wm8974_write(codec, WM8974_CLOCK, reg | 0x100); 40991d0c3ecSMark Brown 41091d0c3ecSMark Brown return 0; 4110a1bf553SMark Brown } 4120a1bf553SMark Brown 4130a1bf553SMark Brown /* 4140a1bf553SMark Brown * Configure WM8974 clock dividers. 4150a1bf553SMark Brown */ 4160a1bf553SMark Brown static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 4170a1bf553SMark Brown int div_id, int div) 4180a1bf553SMark Brown { 4190a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 4200a1bf553SMark Brown u16 reg; 4210a1bf553SMark Brown 4220a1bf553SMark Brown switch (div_id) { 4230a1bf553SMark Brown case WM8974_OPCLKDIV: 4240a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_GPIO) & 0x1cf; 4250a1bf553SMark Brown wm8974_write(codec, WM8974_GPIO, reg | div); 4260a1bf553SMark Brown break; 4270a1bf553SMark Brown case WM8974_MCLKDIV: 4280a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x11f; 4290a1bf553SMark Brown wm8974_write(codec, WM8974_CLOCK, reg | div); 4300a1bf553SMark Brown break; 4310a1bf553SMark Brown case WM8974_ADCCLK: 4320a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_ADC) & 0x1f7; 4330a1bf553SMark Brown wm8974_write(codec, WM8974_ADC, reg | div); 4340a1bf553SMark Brown break; 4350a1bf553SMark Brown case WM8974_DACCLK: 4360a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0x1f7; 4370a1bf553SMark Brown wm8974_write(codec, WM8974_DAC, reg | div); 4380a1bf553SMark Brown break; 4390a1bf553SMark Brown case WM8974_BCLKDIV: 4400a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1e3; 4410a1bf553SMark Brown wm8974_write(codec, WM8974_CLOCK, reg | div); 4420a1bf553SMark Brown break; 4430a1bf553SMark Brown default: 4440a1bf553SMark Brown return -EINVAL; 4450a1bf553SMark Brown } 4460a1bf553SMark Brown 4470a1bf553SMark Brown return 0; 4480a1bf553SMark Brown } 4490a1bf553SMark Brown 4500a1bf553SMark Brown static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, 4510a1bf553SMark Brown unsigned int fmt) 4520a1bf553SMark Brown { 4530a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 4540a1bf553SMark Brown u16 iface = 0; 4550a1bf553SMark Brown u16 clk = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1fe; 4560a1bf553SMark Brown 4570a1bf553SMark Brown /* set master/slave audio interface */ 4580a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 4590a1bf553SMark Brown case SND_SOC_DAIFMT_CBM_CFM: 4600a1bf553SMark Brown clk |= 0x0001; 4610a1bf553SMark Brown break; 4620a1bf553SMark Brown case SND_SOC_DAIFMT_CBS_CFS: 4630a1bf553SMark Brown break; 4640a1bf553SMark Brown default: 4650a1bf553SMark Brown return -EINVAL; 4660a1bf553SMark Brown } 4670a1bf553SMark Brown 4680a1bf553SMark Brown /* interface format */ 4690a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 4700a1bf553SMark Brown case SND_SOC_DAIFMT_I2S: 4710a1bf553SMark Brown iface |= 0x0010; 4720a1bf553SMark Brown break; 4730a1bf553SMark Brown case SND_SOC_DAIFMT_RIGHT_J: 4740a1bf553SMark Brown break; 4750a1bf553SMark Brown case SND_SOC_DAIFMT_LEFT_J: 4760a1bf553SMark Brown iface |= 0x0008; 4770a1bf553SMark Brown break; 4780a1bf553SMark Brown case SND_SOC_DAIFMT_DSP_A: 4790a1bf553SMark Brown iface |= 0x00018; 4800a1bf553SMark Brown break; 4810a1bf553SMark Brown default: 4820a1bf553SMark Brown return -EINVAL; 4830a1bf553SMark Brown } 4840a1bf553SMark Brown 4850a1bf553SMark Brown /* clock inversion */ 4860a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 4870a1bf553SMark Brown case SND_SOC_DAIFMT_NB_NF: 4880a1bf553SMark Brown break; 4890a1bf553SMark Brown case SND_SOC_DAIFMT_IB_IF: 4900a1bf553SMark Brown iface |= 0x0180; 4910a1bf553SMark Brown break; 4920a1bf553SMark Brown case SND_SOC_DAIFMT_IB_NF: 4930a1bf553SMark Brown iface |= 0x0100; 4940a1bf553SMark Brown break; 4950a1bf553SMark Brown case SND_SOC_DAIFMT_NB_IF: 4960a1bf553SMark Brown iface |= 0x0080; 4970a1bf553SMark Brown break; 4980a1bf553SMark Brown default: 4990a1bf553SMark Brown return -EINVAL; 5000a1bf553SMark Brown } 5010a1bf553SMark Brown 5020a1bf553SMark Brown wm8974_write(codec, WM8974_IFACE, iface); 5030a1bf553SMark Brown wm8974_write(codec, WM8974_CLOCK, clk); 5040a1bf553SMark Brown return 0; 5050a1bf553SMark Brown } 5060a1bf553SMark Brown 5070a1bf553SMark Brown static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, 5080a1bf553SMark Brown struct snd_pcm_hw_params *params, 5090a1bf553SMark Brown struct snd_soc_dai *dai) 5100a1bf553SMark Brown { 5110a1bf553SMark Brown struct snd_soc_codec *codec = dai->codec; 5120a1bf553SMark Brown u16 iface = wm8974_read_reg_cache(codec, WM8974_IFACE) & 0x19f; 5130a1bf553SMark Brown u16 adn = wm8974_read_reg_cache(codec, WM8974_ADD) & 0x1f1; 5140a1bf553SMark Brown 5150a1bf553SMark Brown /* bit size */ 5160a1bf553SMark Brown switch (params_format(params)) { 5170a1bf553SMark Brown case SNDRV_PCM_FORMAT_S16_LE: 5180a1bf553SMark Brown break; 5190a1bf553SMark Brown case SNDRV_PCM_FORMAT_S20_3LE: 5200a1bf553SMark Brown iface |= 0x0020; 5210a1bf553SMark Brown break; 5220a1bf553SMark Brown case SNDRV_PCM_FORMAT_S24_LE: 5230a1bf553SMark Brown iface |= 0x0040; 5240a1bf553SMark Brown break; 5250a1bf553SMark Brown case SNDRV_PCM_FORMAT_S32_LE: 5260a1bf553SMark Brown iface |= 0x0060; 5270a1bf553SMark Brown break; 5280a1bf553SMark Brown } 5290a1bf553SMark Brown 5300a1bf553SMark Brown /* filter coefficient */ 5310a1bf553SMark Brown switch (params_rate(params)) { 5320a1bf553SMark Brown case SNDRV_PCM_RATE_8000: 5330a1bf553SMark Brown adn |= 0x5 << 1; 5340a1bf553SMark Brown break; 5350a1bf553SMark Brown case SNDRV_PCM_RATE_11025: 5360a1bf553SMark Brown adn |= 0x4 << 1; 5370a1bf553SMark Brown break; 5380a1bf553SMark Brown case SNDRV_PCM_RATE_16000: 5390a1bf553SMark Brown adn |= 0x3 << 1; 5400a1bf553SMark Brown break; 5410a1bf553SMark Brown case SNDRV_PCM_RATE_22050: 5420a1bf553SMark Brown adn |= 0x2 << 1; 5430a1bf553SMark Brown break; 5440a1bf553SMark Brown case SNDRV_PCM_RATE_32000: 5450a1bf553SMark Brown adn |= 0x1 << 1; 5460a1bf553SMark Brown break; 5470a1bf553SMark Brown case SNDRV_PCM_RATE_44100: 5488b83a193SMark Brown case SNDRV_PCM_RATE_48000: 5490a1bf553SMark Brown break; 5500a1bf553SMark Brown } 5510a1bf553SMark Brown 5520a1bf553SMark Brown wm8974_write(codec, WM8974_IFACE, iface); 5530a1bf553SMark Brown wm8974_write(codec, WM8974_ADD, adn); 5540a1bf553SMark Brown return 0; 5550a1bf553SMark Brown } 5560a1bf553SMark Brown 5570a1bf553SMark Brown static int wm8974_mute(struct snd_soc_dai *dai, int mute) 5580a1bf553SMark Brown { 5590a1bf553SMark Brown struct snd_soc_codec *codec = dai->codec; 5600a1bf553SMark Brown u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf; 5610a1bf553SMark Brown 5620a1bf553SMark Brown if (mute) 5630a1bf553SMark Brown wm8974_write(codec, WM8974_DAC, mute_reg | 0x40); 5640a1bf553SMark Brown else 5650a1bf553SMark Brown wm8974_write(codec, WM8974_DAC, mute_reg); 5660a1bf553SMark Brown return 0; 5670a1bf553SMark Brown } 5680a1bf553SMark Brown 5690a1bf553SMark Brown /* liam need to make this lower power with dapm */ 5700a1bf553SMark Brown static int wm8974_set_bias_level(struct snd_soc_codec *codec, 5710a1bf553SMark Brown enum snd_soc_bias_level level) 5720a1bf553SMark Brown { 573df1ef7a3SMark Brown u16 power1 = wm8974_read_reg_cache(codec, WM8974_POWER1) & ~0x3; 574df1ef7a3SMark Brown 5750a1bf553SMark Brown switch (level) { 5760a1bf553SMark Brown case SND_SOC_BIAS_ON: 5770a1bf553SMark Brown case SND_SOC_BIAS_PREPARE: 578df1ef7a3SMark Brown power1 |= 0x1; /* VMID 50k */ 579df1ef7a3SMark Brown wm8974_write(codec, WM8974_POWER1, power1); 5800a1bf553SMark Brown break; 581df1ef7a3SMark Brown 5820a1bf553SMark Brown case SND_SOC_BIAS_STANDBY: 583df1ef7a3SMark Brown power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN; 584df1ef7a3SMark Brown 585df1ef7a3SMark Brown if (codec->bias_level == SND_SOC_BIAS_OFF) { 586df1ef7a3SMark Brown /* Initial cap charge at VMID 5k */ 587df1ef7a3SMark Brown wm8974_write(codec, WM8974_POWER1, power1 | 0x3); 588df1ef7a3SMark Brown mdelay(100); 589df1ef7a3SMark Brown } 590df1ef7a3SMark Brown 591df1ef7a3SMark Brown power1 |= 0x2; /* VMID 500k */ 592df1ef7a3SMark Brown wm8974_write(codec, WM8974_POWER1, power1); 5930a1bf553SMark Brown break; 594df1ef7a3SMark Brown 5950a1bf553SMark Brown case SND_SOC_BIAS_OFF: 596df1ef7a3SMark Brown wm8974_write(codec, WM8974_POWER1, 0); 597df1ef7a3SMark Brown wm8974_write(codec, WM8974_POWER2, 0); 598df1ef7a3SMark Brown wm8974_write(codec, WM8974_POWER3, 0); 5990a1bf553SMark Brown break; 6000a1bf553SMark Brown } 601df1ef7a3SMark Brown 6020a1bf553SMark Brown codec->bias_level = level; 6030a1bf553SMark Brown return 0; 6040a1bf553SMark Brown } 6050a1bf553SMark Brown 6061a55b3f6SMark Brown #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) 6070a1bf553SMark Brown 6080a1bf553SMark Brown #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 6090a1bf553SMark Brown SNDRV_PCM_FMTBIT_S24_LE) 6100a1bf553SMark Brown 6110a1bf553SMark Brown static struct snd_soc_dai_ops wm8974_ops = { 6120a1bf553SMark Brown .hw_params = wm8974_pcm_hw_params, 6130a1bf553SMark Brown .digital_mute = wm8974_mute, 6140a1bf553SMark Brown .set_fmt = wm8974_set_dai_fmt, 6150a1bf553SMark Brown .set_clkdiv = wm8974_set_dai_clkdiv, 6160a1bf553SMark Brown .set_pll = wm8974_set_dai_pll, 6170a1bf553SMark Brown }; 6180a1bf553SMark Brown 6190a1bf553SMark Brown struct snd_soc_dai wm8974_dai = { 6200a1bf553SMark Brown .name = "WM8974 HiFi", 6210a1bf553SMark Brown .playback = { 6220a1bf553SMark Brown .stream_name = "Playback", 6230a1bf553SMark Brown .channels_min = 1, 62433d81af4SMark Brown .channels_max = 2, /* Only 1 channel of data */ 6250a1bf553SMark Brown .rates = WM8974_RATES, 6260a1bf553SMark Brown .formats = WM8974_FORMATS,}, 6270a1bf553SMark Brown .capture = { 6280a1bf553SMark Brown .stream_name = "Capture", 6290a1bf553SMark Brown .channels_min = 1, 63033d81af4SMark Brown .channels_max = 2, /* Only 1 channel of data */ 6310a1bf553SMark Brown .rates = WM8974_RATES, 6320a1bf553SMark Brown .formats = WM8974_FORMATS,}, 6330a1bf553SMark Brown .ops = &wm8974_ops, 634cb11d39eSMark Brown .symmetric_rates = 1, 6350a1bf553SMark Brown }; 6360a1bf553SMark Brown EXPORT_SYMBOL_GPL(wm8974_dai); 6370a1bf553SMark Brown 6380a1bf553SMark Brown static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) 6390a1bf553SMark Brown { 6400a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 6410a1bf553SMark Brown struct snd_soc_codec *codec = socdev->card->codec; 6420a1bf553SMark Brown 6430a1bf553SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); 6440a1bf553SMark Brown return 0; 6450a1bf553SMark Brown } 6460a1bf553SMark Brown 6470a1bf553SMark Brown static int wm8974_resume(struct platform_device *pdev) 6480a1bf553SMark Brown { 6490a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 6500a1bf553SMark Brown struct snd_soc_codec *codec = socdev->card->codec; 6510a1bf553SMark Brown int i; 6520a1bf553SMark Brown u8 data[2]; 6530a1bf553SMark Brown u16 *cache = codec->reg_cache; 6540a1bf553SMark Brown 6550a1bf553SMark Brown /* Sync reg_cache with the hardware */ 6560a1bf553SMark Brown for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { 6570a1bf553SMark Brown data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 6580a1bf553SMark Brown data[1] = cache[i] & 0x00ff; 6590a1bf553SMark Brown codec->hw_write(codec->control_data, data, 2); 6600a1bf553SMark Brown } 6610a1bf553SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 6620a1bf553SMark Brown wm8974_set_bias_level(codec, codec->suspend_bias_level); 6630a1bf553SMark Brown return 0; 6640a1bf553SMark Brown } 6650a1bf553SMark Brown 6664fcbbb67SMark Brown static int wm8974_probe(struct platform_device *pdev) 6670a1bf553SMark Brown { 6684fcbbb67SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 6694fcbbb67SMark Brown struct snd_soc_codec *codec; 6700a1bf553SMark Brown int ret = 0; 6710a1bf553SMark Brown 6724fcbbb67SMark Brown if (wm8974_codec == NULL) { 6734fcbbb67SMark Brown dev_err(&pdev->dev, "Codec device not registered\n"); 6744fcbbb67SMark Brown return -ENODEV; 6754fcbbb67SMark Brown } 6760a1bf553SMark Brown 6774fcbbb67SMark Brown socdev->card->codec = wm8974_codec; 6784fcbbb67SMark Brown codec = wm8974_codec; 6790a1bf553SMark Brown 6800a1bf553SMark Brown /* register pcms */ 6810a1bf553SMark Brown ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 6820a1bf553SMark Brown if (ret < 0) { 6834fcbbb67SMark Brown dev_err(codec->dev, "failed to create pcms: %d\n", ret); 6840a1bf553SMark Brown goto pcm_err; 6850a1bf553SMark Brown } 6860a1bf553SMark Brown 6874fcbbb67SMark Brown snd_soc_add_controls(codec, wm8974_snd_controls, 6884fcbbb67SMark Brown ARRAY_SIZE(wm8974_snd_controls)); 6890a1bf553SMark Brown wm8974_add_widgets(codec); 6900a1bf553SMark Brown ret = snd_soc_init_card(socdev); 6910a1bf553SMark Brown if (ret < 0) { 6924fcbbb67SMark Brown dev_err(codec->dev, "failed to register card: %d\n", ret); 6930a1bf553SMark Brown goto card_err; 6940a1bf553SMark Brown } 6954fcbbb67SMark Brown 6960a1bf553SMark Brown return ret; 6970a1bf553SMark Brown 6980a1bf553SMark Brown card_err: 6990a1bf553SMark Brown snd_soc_free_pcms(socdev); 7000a1bf553SMark Brown snd_soc_dapm_free(socdev); 7010a1bf553SMark Brown pcm_err: 7020a1bf553SMark Brown return ret; 7030a1bf553SMark Brown } 7040a1bf553SMark Brown 7050a1bf553SMark Brown /* power down chip */ 7060a1bf553SMark Brown static int wm8974_remove(struct platform_device *pdev) 7070a1bf553SMark Brown { 7080a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 7090a1bf553SMark Brown 7100a1bf553SMark Brown snd_soc_free_pcms(socdev); 7110a1bf553SMark Brown snd_soc_dapm_free(socdev); 7120a1bf553SMark Brown 7130a1bf553SMark Brown return 0; 7140a1bf553SMark Brown } 7150a1bf553SMark Brown 7160a1bf553SMark Brown struct snd_soc_codec_device soc_codec_dev_wm8974 = { 7170a1bf553SMark Brown .probe = wm8974_probe, 7180a1bf553SMark Brown .remove = wm8974_remove, 7190a1bf553SMark Brown .suspend = wm8974_suspend, 7200a1bf553SMark Brown .resume = wm8974_resume, 7210a1bf553SMark Brown }; 7220a1bf553SMark Brown EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); 7230a1bf553SMark Brown 7244fcbbb67SMark Brown static __devinit int wm8974_register(struct wm8974_priv *wm8974) 7254fcbbb67SMark Brown { 7264fcbbb67SMark Brown int ret; 7274fcbbb67SMark Brown struct snd_soc_codec *codec = &wm8974->codec; 7284fcbbb67SMark Brown 7294fcbbb67SMark Brown if (wm8974_codec) { 7304fcbbb67SMark Brown dev_err(codec->dev, "Another WM8974 is registered\n"); 7314fcbbb67SMark Brown return -EINVAL; 7324fcbbb67SMark Brown } 7334fcbbb67SMark Brown 7344fcbbb67SMark Brown mutex_init(&codec->mutex); 7354fcbbb67SMark Brown INIT_LIST_HEAD(&codec->dapm_widgets); 7364fcbbb67SMark Brown INIT_LIST_HEAD(&codec->dapm_paths); 7374fcbbb67SMark Brown 7384fcbbb67SMark Brown codec->private_data = wm8974; 7394fcbbb67SMark Brown codec->name = "WM8974"; 7404fcbbb67SMark Brown codec->owner = THIS_MODULE; 7414fcbbb67SMark Brown codec->read = wm8974_read_reg_cache; 7424fcbbb67SMark Brown codec->write = wm8974_write; 7434fcbbb67SMark Brown codec->bias_level = SND_SOC_BIAS_OFF; 7444fcbbb67SMark Brown codec->set_bias_level = wm8974_set_bias_level; 7454fcbbb67SMark Brown codec->dai = &wm8974_dai; 7464fcbbb67SMark Brown codec->num_dai = 1; 7474fcbbb67SMark Brown codec->reg_cache_size = WM8974_CACHEREGNUM; 7484fcbbb67SMark Brown codec->reg_cache = &wm8974->reg_cache; 7494fcbbb67SMark Brown 7504fcbbb67SMark Brown memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg)); 7514fcbbb67SMark Brown 7524fcbbb67SMark Brown ret = wm8974_reset(codec); 7534fcbbb67SMark Brown if (ret < 0) { 7544fcbbb67SMark Brown dev_err(codec->dev, "Failed to issue reset\n"); 7554fcbbb67SMark Brown return ret; 7564fcbbb67SMark Brown } 7574fcbbb67SMark Brown 7584fcbbb67SMark Brown wm8974_dai.dev = codec->dev; 7594fcbbb67SMark Brown 7604fcbbb67SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 7614fcbbb67SMark Brown 7624fcbbb67SMark Brown wm8974_codec = codec; 7634fcbbb67SMark Brown 7644fcbbb67SMark Brown ret = snd_soc_register_codec(codec); 7654fcbbb67SMark Brown if (ret != 0) { 7664fcbbb67SMark Brown dev_err(codec->dev, "Failed to register codec: %d\n", ret); 7674fcbbb67SMark Brown return ret; 7684fcbbb67SMark Brown } 7694fcbbb67SMark Brown 7704fcbbb67SMark Brown ret = snd_soc_register_dai(&wm8974_dai); 7714fcbbb67SMark Brown if (ret != 0) { 7724fcbbb67SMark Brown dev_err(codec->dev, "Failed to register DAI: %d\n", ret); 7734fcbbb67SMark Brown snd_soc_unregister_codec(codec); 7744fcbbb67SMark Brown return ret; 7754fcbbb67SMark Brown } 7764fcbbb67SMark Brown 7774fcbbb67SMark Brown return 0; 7784fcbbb67SMark Brown } 7794fcbbb67SMark Brown 7804fcbbb67SMark Brown static __devexit void wm8974_unregister(struct wm8974_priv *wm8974) 7814fcbbb67SMark Brown { 7824fcbbb67SMark Brown wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF); 7834fcbbb67SMark Brown snd_soc_unregister_dai(&wm8974_dai); 7844fcbbb67SMark Brown snd_soc_unregister_codec(&wm8974->codec); 7854fcbbb67SMark Brown kfree(wm8974); 7864fcbbb67SMark Brown wm8974_codec = NULL; 7874fcbbb67SMark Brown } 7884fcbbb67SMark Brown 7894fcbbb67SMark Brown static __devinit int wm8974_i2c_probe(struct i2c_client *i2c, 7904fcbbb67SMark Brown const struct i2c_device_id *id) 7914fcbbb67SMark Brown { 7924fcbbb67SMark Brown struct wm8974_priv *wm8974; 7934fcbbb67SMark Brown struct snd_soc_codec *codec; 7944fcbbb67SMark Brown 7954fcbbb67SMark Brown wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL); 7964fcbbb67SMark Brown if (wm8974 == NULL) 7974fcbbb67SMark Brown return -ENOMEM; 7984fcbbb67SMark Brown 7994fcbbb67SMark Brown codec = &wm8974->codec; 8004fcbbb67SMark Brown codec->hw_write = (hw_write_t)i2c_master_send; 8014fcbbb67SMark Brown 8024fcbbb67SMark Brown i2c_set_clientdata(i2c, wm8974); 8034fcbbb67SMark Brown codec->control_data = i2c; 8044fcbbb67SMark Brown 8054fcbbb67SMark Brown codec->dev = &i2c->dev; 8064fcbbb67SMark Brown 8074fcbbb67SMark Brown return wm8974_register(wm8974); 8084fcbbb67SMark Brown } 8094fcbbb67SMark Brown 8104fcbbb67SMark Brown static __devexit int wm8974_i2c_remove(struct i2c_client *client) 8114fcbbb67SMark Brown { 8124fcbbb67SMark Brown struct wm8974_priv *wm8974 = i2c_get_clientdata(client); 8134fcbbb67SMark Brown wm8974_unregister(wm8974); 8144fcbbb67SMark Brown return 0; 8154fcbbb67SMark Brown } 8164fcbbb67SMark Brown 8174fcbbb67SMark Brown static const struct i2c_device_id wm8974_i2c_id[] = { 8184fcbbb67SMark Brown { "wm8974", 0 }, 8194fcbbb67SMark Brown { } 8204fcbbb67SMark Brown }; 8214fcbbb67SMark Brown MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id); 8224fcbbb67SMark Brown 8234fcbbb67SMark Brown static struct i2c_driver wm8974_i2c_driver = { 8244fcbbb67SMark Brown .driver = { 8258b83a193SMark Brown .name = "WM8974", 8264fcbbb67SMark Brown .owner = THIS_MODULE, 8274fcbbb67SMark Brown }, 8284fcbbb67SMark Brown .probe = wm8974_i2c_probe, 8294fcbbb67SMark Brown .remove = __devexit_p(wm8974_i2c_remove), 8304fcbbb67SMark Brown .id_table = wm8974_i2c_id, 8314fcbbb67SMark Brown }; 8324fcbbb67SMark Brown 8330a1bf553SMark Brown static int __init wm8974_modinit(void) 8340a1bf553SMark Brown { 8354fcbbb67SMark Brown return i2c_add_driver(&wm8974_i2c_driver); 8360a1bf553SMark Brown } 8370a1bf553SMark Brown module_init(wm8974_modinit); 8380a1bf553SMark Brown 8390a1bf553SMark Brown static void __exit wm8974_exit(void) 8400a1bf553SMark Brown { 8414fcbbb67SMark Brown i2c_del_driver(&wm8974_i2c_driver); 8420a1bf553SMark Brown } 8430a1bf553SMark Brown module_exit(wm8974_exit); 8440a1bf553SMark Brown 8450a1bf553SMark Brown MODULE_DESCRIPTION("ASoC WM8974 driver"); 8460a1bf553SMark Brown MODULE_AUTHOR("Liam Girdwood"); 8470a1bf553SMark Brown MODULE_LICENSE("GPL"); 848