10a1bf553SMark Brown /* 20a1bf553SMark Brown * wm8974.c -- WM8974 ALSA Soc Audio driver 30a1bf553SMark Brown * 40a1bf553SMark Brown * Copyright 2006 Wolfson Microelectronics PLC. 50a1bf553SMark Brown * 6*4fcbbb67SMark 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> 280a1bf553SMark Brown 290a1bf553SMark Brown #include "wm8974.h" 300a1bf553SMark Brown 310a1bf553SMark Brown static const u16 wm8974_reg[WM8974_CACHEREGNUM] = { 320a1bf553SMark Brown 0x0000, 0x0000, 0x0000, 0x0000, 330a1bf553SMark Brown 0x0050, 0x0000, 0x0140, 0x0000, 340a1bf553SMark Brown 0x0000, 0x0000, 0x0000, 0x00ff, 350a1bf553SMark Brown 0x0000, 0x0000, 0x0100, 0x00ff, 360a1bf553SMark Brown 0x0000, 0x0000, 0x012c, 0x002c, 370a1bf553SMark Brown 0x002c, 0x002c, 0x002c, 0x0000, 380a1bf553SMark Brown 0x0032, 0x0000, 0x0000, 0x0000, 390a1bf553SMark Brown 0x0000, 0x0000, 0x0000, 0x0000, 400a1bf553SMark Brown 0x0038, 0x000b, 0x0032, 0x0000, 410a1bf553SMark Brown 0x0008, 0x000c, 0x0093, 0x00e9, 420a1bf553SMark Brown 0x0000, 0x0000, 0x0000, 0x0000, 430a1bf553SMark Brown 0x0003, 0x0010, 0x0000, 0x0000, 440a1bf553SMark Brown 0x0000, 0x0002, 0x0000, 0x0000, 450a1bf553SMark Brown 0x0000, 0x0000, 0x0039, 0x0000, 460a1bf553SMark Brown 0x0000, 470a1bf553SMark Brown }; 480a1bf553SMark Brown 49*4fcbbb67SMark Brown struct wm8974_priv { 50*4fcbbb67SMark Brown struct snd_soc_codec codec; 51*4fcbbb67SMark Brown u16 reg_cache[WM8974_CACHEREGNUM]; 52*4fcbbb67SMark Brown }; 53*4fcbbb67SMark Brown 54*4fcbbb67SMark Brown static struct snd_soc_codec *wm8974_codec; 55*4fcbbb67SMark Brown 560a1bf553SMark Brown /* 570a1bf553SMark Brown * read wm8974 register cache 580a1bf553SMark Brown */ 590a1bf553SMark Brown static inline unsigned int wm8974_read_reg_cache(struct snd_soc_codec *codec, 600a1bf553SMark Brown unsigned int reg) 610a1bf553SMark Brown { 620a1bf553SMark Brown u16 *cache = codec->reg_cache; 630a1bf553SMark Brown if (reg == WM8974_RESET) 640a1bf553SMark Brown return 0; 650a1bf553SMark Brown if (reg >= WM8974_CACHEREGNUM) 660a1bf553SMark Brown return -1; 670a1bf553SMark Brown return cache[reg]; 680a1bf553SMark Brown } 690a1bf553SMark Brown 700a1bf553SMark Brown /* 710a1bf553SMark Brown * write wm8974 register cache 720a1bf553SMark Brown */ 730a1bf553SMark Brown static inline void wm8974_write_reg_cache(struct snd_soc_codec *codec, 740a1bf553SMark Brown u16 reg, unsigned int value) 750a1bf553SMark Brown { 760a1bf553SMark Brown u16 *cache = codec->reg_cache; 770a1bf553SMark Brown if (reg >= WM8974_CACHEREGNUM) 780a1bf553SMark Brown return; 790a1bf553SMark Brown cache[reg] = value; 800a1bf553SMark Brown } 810a1bf553SMark Brown 820a1bf553SMark Brown /* 830a1bf553SMark Brown * write to the WM8974 register space 840a1bf553SMark Brown */ 850a1bf553SMark Brown static int wm8974_write(struct snd_soc_codec *codec, unsigned int reg, 860a1bf553SMark Brown unsigned int value) 870a1bf553SMark Brown { 880a1bf553SMark Brown u8 data[2]; 890a1bf553SMark Brown 900a1bf553SMark Brown /* data is 910a1bf553SMark Brown * D15..D9 WM8974 register offset 920a1bf553SMark Brown * D8...D0 register data 930a1bf553SMark Brown */ 940a1bf553SMark Brown data[0] = (reg << 1) | ((value >> 8) & 0x0001); 950a1bf553SMark Brown data[1] = value & 0x00ff; 960a1bf553SMark Brown 970a1bf553SMark Brown wm8974_write_reg_cache(codec, reg, value); 980a1bf553SMark Brown if (codec->hw_write(codec->control_data, data, 2) == 2) 990a1bf553SMark Brown return 0; 1000a1bf553SMark Brown else 1010a1bf553SMark Brown return -EIO; 1020a1bf553SMark Brown } 1030a1bf553SMark Brown 1040a1bf553SMark Brown #define wm8974_reset(c) wm8974_write(c, WM8974_RESET, 0) 1050a1bf553SMark Brown 1060a1bf553SMark Brown static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" }; 1070a1bf553SMark Brown static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" }; 1080a1bf553SMark Brown static const char *wm8974_eqmode[] = {"Capture", "Playback" }; 1090a1bf553SMark Brown static const char *wm8974_bw[] = {"Narrow", "Wide" }; 1100a1bf553SMark Brown static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" }; 1110a1bf553SMark Brown static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" }; 1120a1bf553SMark Brown static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" }; 1130a1bf553SMark Brown static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" }; 1140a1bf553SMark Brown static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" }; 1150a1bf553SMark Brown static const char *wm8974_alc[] = {"ALC", "Limiter" }; 1160a1bf553SMark Brown 1170a1bf553SMark Brown static const struct soc_enum wm8974_enum[] = { 1180a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */ 1190a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */ 1200a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp), 1210a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode), 1220a1bf553SMark Brown 1230a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1), 1240a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw), 1250a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2), 1260a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw), 1270a1bf553SMark Brown 1280a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3), 1290a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw), 1300a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4), 1310a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw), 1320a1bf553SMark Brown 1330a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5), 1340a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc), 1350a1bf553SMark Brown }; 1360a1bf553SMark Brown 1370a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_snd_controls[] = { 1380a1bf553SMark Brown 1390a1bf553SMark Brown SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0), 1400a1bf553SMark Brown 1410a1bf553SMark Brown SOC_ENUM("DAC Companding", wm8974_enum[1]), 1420a1bf553SMark Brown SOC_ENUM("ADC Companding", wm8974_enum[0]), 1430a1bf553SMark Brown 1440a1bf553SMark Brown SOC_ENUM("Playback De-emphasis", wm8974_enum[2]), 1450a1bf553SMark Brown SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0), 1460a1bf553SMark Brown 1470a1bf553SMark Brown SOC_SINGLE("PCM Volume", WM8974_DACVOL, 0, 127, 0), 1480a1bf553SMark Brown 1490a1bf553SMark Brown SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0), 1500a1bf553SMark Brown SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0), 1510a1bf553SMark Brown SOC_SINGLE("ADC Inversion Switch", WM8974_COMP, 0, 1, 0), 1520a1bf553SMark Brown 1530a1bf553SMark Brown SOC_SINGLE("Capture Volume", WM8974_ADCVOL, 0, 127, 0), 1540a1bf553SMark Brown 1550a1bf553SMark Brown SOC_ENUM("Equaliser Function", wm8974_enum[3]), 1560a1bf553SMark Brown SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]), 1570a1bf553SMark Brown SOC_SINGLE("EQ1 Volume", WM8974_EQ1, 0, 31, 1), 1580a1bf553SMark Brown 1590a1bf553SMark Brown SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]), 1600a1bf553SMark Brown SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]), 1610a1bf553SMark Brown SOC_SINGLE("EQ2 Volume", WM8974_EQ2, 0, 31, 1), 1620a1bf553SMark Brown 1630a1bf553SMark Brown SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]), 1640a1bf553SMark Brown SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]), 1650a1bf553SMark Brown SOC_SINGLE("EQ3 Volume", WM8974_EQ3, 0, 31, 1), 1660a1bf553SMark Brown 1670a1bf553SMark Brown SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]), 1680a1bf553SMark Brown SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]), 1690a1bf553SMark Brown SOC_SINGLE("EQ4 Volume", WM8974_EQ4, 0, 31, 1), 1700a1bf553SMark Brown 1710a1bf553SMark Brown SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]), 1720a1bf553SMark Brown SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]), 1730a1bf553SMark Brown SOC_SINGLE("EQ5 Volume", WM8974_EQ5, 0, 31, 1), 1740a1bf553SMark Brown 1750a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0), 1760a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0), 1770a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0), 1780a1bf553SMark Brown 1790a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0), 1800a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0), 1810a1bf553SMark Brown 1820a1bf553SMark Brown SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0), 1830a1bf553SMark Brown SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0), 1840a1bf553SMark Brown SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0), 1850a1bf553SMark Brown 1860a1bf553SMark Brown SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0), 1870a1bf553SMark Brown SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0), 1880a1bf553SMark Brown SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0), 1890a1bf553SMark Brown 1900a1bf553SMark Brown SOC_ENUM("ALC Capture Mode", wm8974_enum[13]), 1910a1bf553SMark Brown SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0), 1920a1bf553SMark Brown SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0), 1930a1bf553SMark Brown 1940a1bf553SMark Brown SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0), 1950a1bf553SMark Brown SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0), 1960a1bf553SMark Brown 1970a1bf553SMark Brown SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0), 1980a1bf553SMark Brown SOC_SINGLE("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0), 1990a1bf553SMark Brown 2000a1bf553SMark Brown SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0), 2010a1bf553SMark Brown SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1), 2020a1bf553SMark Brown SOC_SINGLE("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0), 2030a1bf553SMark Brown 2040a1bf553SMark Brown SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0), 2050a1bf553SMark Brown SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 0), 2060a1bf553SMark Brown }; 2070a1bf553SMark Brown 2080a1bf553SMark Brown /* add non dapm controls */ 2090a1bf553SMark Brown static int wm8974_add_controls(struct snd_soc_codec *codec) 2100a1bf553SMark Brown { 2110a1bf553SMark Brown int err, i; 2120a1bf553SMark Brown 2130a1bf553SMark Brown for (i = 0; i < ARRAY_SIZE(wm8974_snd_controls); i++) { 2140a1bf553SMark Brown err = snd_ctl_add(codec->card, 2151a55b3f6SMark Brown snd_soc_cnew(&wm8974_snd_controls[i], 2161a55b3f6SMark Brown codec, NULL)); 2170a1bf553SMark Brown if (err < 0) 2180a1bf553SMark Brown return err; 2190a1bf553SMark Brown } 2200a1bf553SMark Brown 2210a1bf553SMark Brown return 0; 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), 2350a1bf553SMark Brown SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 1), 2360a1bf553SMark Brown }; 2370a1bf553SMark Brown 2380a1bf553SMark Brown /* AUX Input boost vol */ 2390a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_aux_boost_controls = 2400a1bf553SMark Brown SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); 2410a1bf553SMark Brown 2420a1bf553SMark Brown /* Mic Input boost vol */ 2430a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_mic_boost_controls = 2440a1bf553SMark Brown SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); 2450a1bf553SMark Brown 2460a1bf553SMark Brown /* Capture boost switch */ 2470a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_capture_boost_controls = 2480a1bf553SMark Brown SOC_DAPM_SINGLE("Capture Boost Switch", WM8974_INPPGA, 6, 1, 0); 2490a1bf553SMark Brown 2500a1bf553SMark Brown /* Aux In to PGA */ 2510a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_aux_capture_boost_controls = 2520a1bf553SMark Brown SOC_DAPM_SINGLE("Aux Capture Boost Switch", WM8974_INPPGA, 2, 1, 0); 2530a1bf553SMark Brown 2540a1bf553SMark Brown /* Mic P In to PGA */ 2550a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_micp_capture_boost_controls = 2560a1bf553SMark Brown SOC_DAPM_SINGLE("Mic P Capture Boost Switch", WM8974_INPPGA, 0, 1, 0); 2570a1bf553SMark Brown 2580a1bf553SMark Brown /* Mic N In to PGA */ 2590a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_micn_capture_boost_controls = 2600a1bf553SMark Brown SOC_DAPM_SINGLE("Mic N Capture Boost Switch", WM8974_INPPGA, 1, 1, 0); 2610a1bf553SMark Brown 2620a1bf553SMark Brown static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { 2630a1bf553SMark Brown SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, 2640a1bf553SMark Brown &wm8974_speaker_mixer_controls[0], 2650a1bf553SMark Brown ARRAY_SIZE(wm8974_speaker_mixer_controls)), 2660a1bf553SMark Brown SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, 2670a1bf553SMark Brown &wm8974_mono_mixer_controls[0], 2680a1bf553SMark Brown ARRAY_SIZE(wm8974_mono_mixer_controls)), 2690a1bf553SMark Brown SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), 2700a1bf553SMark Brown SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER3, 0, 0), 2710a1bf553SMark Brown SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), 2720a1bf553SMark Brown SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), 2730a1bf553SMark Brown SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), 2740a1bf553SMark Brown SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), 2750a1bf553SMark Brown SND_SOC_DAPM_PGA("Mic PGA", WM8974_POWER2, 2, 0, NULL, 0), 2760a1bf553SMark Brown 2770a1bf553SMark Brown SND_SOC_DAPM_PGA("Aux Boost", SND_SOC_NOPM, 0, 0, 2780a1bf553SMark Brown &wm8974_aux_boost_controls, 1), 2790a1bf553SMark Brown SND_SOC_DAPM_PGA("Mic Boost", SND_SOC_NOPM, 0, 0, 2800a1bf553SMark Brown &wm8974_mic_boost_controls, 1), 2810a1bf553SMark Brown SND_SOC_DAPM_SWITCH("Capture Boost", SND_SOC_NOPM, 0, 0, 2820a1bf553SMark Brown &wm8974_capture_boost_controls), 2830a1bf553SMark Brown 2840a1bf553SMark Brown SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, NULL, 0), 2850a1bf553SMark Brown 2860a1bf553SMark Brown SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), 2870a1bf553SMark Brown 2880a1bf553SMark Brown SND_SOC_DAPM_INPUT("MICN"), 2890a1bf553SMark Brown SND_SOC_DAPM_INPUT("MICP"), 2900a1bf553SMark Brown SND_SOC_DAPM_INPUT("AUX"), 2910a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("MONOOUT"), 2920a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("SPKOUTP"), 2930a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("SPKOUTN"), 2940a1bf553SMark Brown }; 2950a1bf553SMark Brown 2960a1bf553SMark Brown static const struct snd_soc_dapm_route audio_map[] = { 2970a1bf553SMark Brown /* Mono output mixer */ 2980a1bf553SMark Brown {"Mono Mixer", "PCM Playback Switch", "DAC"}, 2990a1bf553SMark Brown {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 3000a1bf553SMark Brown {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 3010a1bf553SMark Brown 3020a1bf553SMark Brown /* Speaker output mixer */ 3030a1bf553SMark Brown {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 3040a1bf553SMark Brown {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 3050a1bf553SMark Brown {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 3060a1bf553SMark Brown 3070a1bf553SMark Brown /* Outputs */ 3080a1bf553SMark Brown {"Mono Out", NULL, "Mono Mixer"}, 3090a1bf553SMark Brown {"MONOOUT", NULL, "Mono Out"}, 3100a1bf553SMark Brown {"SpkN Out", NULL, "Speaker Mixer"}, 3110a1bf553SMark Brown {"SpkP Out", NULL, "Speaker Mixer"}, 3120a1bf553SMark Brown {"SPKOUTN", NULL, "SpkN Out"}, 3130a1bf553SMark Brown {"SPKOUTP", NULL, "SpkP Out"}, 3140a1bf553SMark Brown 3150a1bf553SMark Brown /* Boost Mixer */ 3160a1bf553SMark Brown {"Boost Mixer", NULL, "ADC"}, 3170a1bf553SMark Brown {"Capture Boost Switch", "Aux Capture Boost Switch", "AUX"}, 3180a1bf553SMark Brown {"Aux Boost", "Aux Volume", "Boost Mixer"}, 3190a1bf553SMark Brown {"Capture Boost", "Capture Switch", "Boost Mixer"}, 3200a1bf553SMark Brown {"Mic Boost", "Mic Volume", "Boost Mixer"}, 3210a1bf553SMark Brown 3220a1bf553SMark Brown /* Inputs */ 3230a1bf553SMark Brown {"MICP", NULL, "Mic Boost"}, 3240a1bf553SMark Brown {"MICN", NULL, "Mic PGA"}, 3250a1bf553SMark Brown {"Mic PGA", NULL, "Capture Boost"}, 3260a1bf553SMark Brown {"AUX", NULL, "Aux Input"}, 3270a1bf553SMark Brown }; 3280a1bf553SMark Brown 3290a1bf553SMark Brown static int wm8974_add_widgets(struct snd_soc_codec *codec) 3300a1bf553SMark Brown { 3310a1bf553SMark Brown snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, 3320a1bf553SMark Brown ARRAY_SIZE(wm8974_dapm_widgets)); 3330a1bf553SMark Brown 3340a1bf553SMark Brown snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 3350a1bf553SMark Brown 3360a1bf553SMark Brown snd_soc_dapm_new_widgets(codec); 3370a1bf553SMark Brown return 0; 3380a1bf553SMark Brown } 3390a1bf553SMark Brown 3400a1bf553SMark Brown struct pll_ { 3410a1bf553SMark Brown unsigned int in_hz, out_hz; 3420a1bf553SMark Brown unsigned int pre:4; /* prescale - 1 */ 3430a1bf553SMark Brown unsigned int n:4; 3440a1bf553SMark Brown unsigned int k; 3450a1bf553SMark Brown }; 3460a1bf553SMark Brown 3470a1bf553SMark Brown static struct pll_ pll[] = { 3480a1bf553SMark Brown { 12000000, 11289600, 0, 7, 0x86c220 }, 3490a1bf553SMark Brown { 12000000, 12288000, 0, 8, 0x3126e8 }, 3500a1bf553SMark Brown { 13000000, 11289600, 0, 6, 0xf28bd4 }, 3510a1bf553SMark Brown { 13000000, 12288000, 0, 7, 0x8fd525 }, 3520a1bf553SMark Brown { 12288000, 11289600, 0, 7, 0x59999a }, 3530a1bf553SMark Brown { 11289600, 12288000, 0, 8, 0x80dee9 }, 3541a55b3f6SMark Brown { 25000000, 11289600, 1, 7, 0x39B024 }, 3551a55b3f6SMark Brown { 25000000, 24576000, 1, 7, 0xdd4413 } 3560a1bf553SMark Brown }; 3570a1bf553SMark Brown 3580a1bf553SMark Brown static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, 3590a1bf553SMark Brown int pll_id, unsigned int freq_in, unsigned int freq_out) 3600a1bf553SMark Brown { 3610a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 3620a1bf553SMark Brown int i; 3630a1bf553SMark Brown u16 reg; 3640a1bf553SMark Brown 3650a1bf553SMark Brown if (freq_in == 0 || freq_out == 0) { 3660a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_POWER1); 3670a1bf553SMark Brown wm8974_write(codec, WM8974_POWER1, reg & 0x1df); 3680a1bf553SMark Brown return 0; 3690a1bf553SMark Brown } 3700a1bf553SMark Brown 3710a1bf553SMark Brown for (i = 0; i < ARRAY_SIZE(pll); i++) { 3720a1bf553SMark Brown if (freq_in == pll[i].in_hz && freq_out == pll[i].out_hz) { 3731a55b3f6SMark Brown wm8974_write(codec, WM8974_PLLN, 3741a55b3f6SMark Brown (pll[i].pre << 4) | pll[i].n); 3750a1bf553SMark Brown wm8974_write(codec, WM8974_PLLK1, pll[i].k >> 18); 3761a55b3f6SMark Brown wm8974_write(codec, WM8974_PLLK2, 3771a55b3f6SMark Brown (pll[i].k >> 9) & 0x1ff); 3780a1bf553SMark Brown wm8974_write(codec, WM8974_PLLK3, pll[i].k & 0x1ff); 3790a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_POWER1); 3800a1bf553SMark Brown wm8974_write(codec, WM8974_POWER1, reg | 0x020); 3810a1bf553SMark Brown return 0; 3820a1bf553SMark Brown } 3830a1bf553SMark Brown } 3841a55b3f6SMark Brown 3850a1bf553SMark Brown return -EINVAL; 3860a1bf553SMark Brown } 3870a1bf553SMark Brown 3880a1bf553SMark Brown /* 3890a1bf553SMark Brown * Configure WM8974 clock dividers. 3900a1bf553SMark Brown */ 3910a1bf553SMark Brown static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 3920a1bf553SMark Brown int div_id, int div) 3930a1bf553SMark Brown { 3940a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 3950a1bf553SMark Brown u16 reg; 3960a1bf553SMark Brown 3970a1bf553SMark Brown switch (div_id) { 3980a1bf553SMark Brown case WM8974_OPCLKDIV: 3990a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_GPIO) & 0x1cf; 4000a1bf553SMark Brown wm8974_write(codec, WM8974_GPIO, reg | div); 4010a1bf553SMark Brown break; 4020a1bf553SMark Brown case WM8974_MCLKDIV: 4030a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x11f; 4040a1bf553SMark Brown wm8974_write(codec, WM8974_CLOCK, reg | div); 4050a1bf553SMark Brown break; 4060a1bf553SMark Brown case WM8974_ADCCLK: 4070a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_ADC) & 0x1f7; 4080a1bf553SMark Brown wm8974_write(codec, WM8974_ADC, reg | div); 4090a1bf553SMark Brown break; 4100a1bf553SMark Brown case WM8974_DACCLK: 4110a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0x1f7; 4120a1bf553SMark Brown wm8974_write(codec, WM8974_DAC, reg | div); 4130a1bf553SMark Brown break; 4140a1bf553SMark Brown case WM8974_BCLKDIV: 4150a1bf553SMark Brown reg = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1e3; 4160a1bf553SMark Brown wm8974_write(codec, WM8974_CLOCK, reg | div); 4170a1bf553SMark Brown break; 4180a1bf553SMark Brown default: 4190a1bf553SMark Brown return -EINVAL; 4200a1bf553SMark Brown } 4210a1bf553SMark Brown 4220a1bf553SMark Brown return 0; 4230a1bf553SMark Brown } 4240a1bf553SMark Brown 4250a1bf553SMark Brown static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, 4260a1bf553SMark Brown unsigned int fmt) 4270a1bf553SMark Brown { 4280a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 4290a1bf553SMark Brown u16 iface = 0; 4300a1bf553SMark Brown u16 clk = wm8974_read_reg_cache(codec, WM8974_CLOCK) & 0x1fe; 4310a1bf553SMark Brown 4320a1bf553SMark Brown /* set master/slave audio interface */ 4330a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 4340a1bf553SMark Brown case SND_SOC_DAIFMT_CBM_CFM: 4350a1bf553SMark Brown clk |= 0x0001; 4360a1bf553SMark Brown break; 4370a1bf553SMark Brown case SND_SOC_DAIFMT_CBS_CFS: 4380a1bf553SMark Brown break; 4390a1bf553SMark Brown default: 4400a1bf553SMark Brown return -EINVAL; 4410a1bf553SMark Brown } 4420a1bf553SMark Brown 4430a1bf553SMark Brown /* interface format */ 4440a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 4450a1bf553SMark Brown case SND_SOC_DAIFMT_I2S: 4460a1bf553SMark Brown iface |= 0x0010; 4470a1bf553SMark Brown break; 4480a1bf553SMark Brown case SND_SOC_DAIFMT_RIGHT_J: 4490a1bf553SMark Brown break; 4500a1bf553SMark Brown case SND_SOC_DAIFMT_LEFT_J: 4510a1bf553SMark Brown iface |= 0x0008; 4520a1bf553SMark Brown break; 4530a1bf553SMark Brown case SND_SOC_DAIFMT_DSP_A: 4540a1bf553SMark Brown iface |= 0x00018; 4550a1bf553SMark Brown break; 4560a1bf553SMark Brown default: 4570a1bf553SMark Brown return -EINVAL; 4580a1bf553SMark Brown } 4590a1bf553SMark Brown 4600a1bf553SMark Brown /* clock inversion */ 4610a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 4620a1bf553SMark Brown case SND_SOC_DAIFMT_NB_NF: 4630a1bf553SMark Brown break; 4640a1bf553SMark Brown case SND_SOC_DAIFMT_IB_IF: 4650a1bf553SMark Brown iface |= 0x0180; 4660a1bf553SMark Brown break; 4670a1bf553SMark Brown case SND_SOC_DAIFMT_IB_NF: 4680a1bf553SMark Brown iface |= 0x0100; 4690a1bf553SMark Brown break; 4700a1bf553SMark Brown case SND_SOC_DAIFMT_NB_IF: 4710a1bf553SMark Brown iface |= 0x0080; 4720a1bf553SMark Brown break; 4730a1bf553SMark Brown default: 4740a1bf553SMark Brown return -EINVAL; 4750a1bf553SMark Brown } 4760a1bf553SMark Brown 4770a1bf553SMark Brown wm8974_write(codec, WM8974_IFACE, iface); 4780a1bf553SMark Brown wm8974_write(codec, WM8974_CLOCK, clk); 4790a1bf553SMark Brown return 0; 4800a1bf553SMark Brown } 4810a1bf553SMark Brown 4820a1bf553SMark Brown static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, 4830a1bf553SMark Brown struct snd_pcm_hw_params *params, 4840a1bf553SMark Brown struct snd_soc_dai *dai) 4850a1bf553SMark Brown { 4860a1bf553SMark Brown struct snd_soc_codec *codec = dai->codec; 4870a1bf553SMark Brown u16 iface = wm8974_read_reg_cache(codec, WM8974_IFACE) & 0x19f; 4880a1bf553SMark Brown u16 adn = wm8974_read_reg_cache(codec, WM8974_ADD) & 0x1f1; 4890a1bf553SMark Brown 4900a1bf553SMark Brown /* bit size */ 4910a1bf553SMark Brown switch (params_format(params)) { 4920a1bf553SMark Brown case SNDRV_PCM_FORMAT_S16_LE: 4930a1bf553SMark Brown break; 4940a1bf553SMark Brown case SNDRV_PCM_FORMAT_S20_3LE: 4950a1bf553SMark Brown iface |= 0x0020; 4960a1bf553SMark Brown break; 4970a1bf553SMark Brown case SNDRV_PCM_FORMAT_S24_LE: 4980a1bf553SMark Brown iface |= 0x0040; 4990a1bf553SMark Brown break; 5000a1bf553SMark Brown case SNDRV_PCM_FORMAT_S32_LE: 5010a1bf553SMark Brown iface |= 0x0060; 5020a1bf553SMark Brown break; 5030a1bf553SMark Brown } 5040a1bf553SMark Brown 5050a1bf553SMark Brown /* filter coefficient */ 5060a1bf553SMark Brown switch (params_rate(params)) { 5070a1bf553SMark Brown case SNDRV_PCM_RATE_8000: 5080a1bf553SMark Brown adn |= 0x5 << 1; 5090a1bf553SMark Brown break; 5100a1bf553SMark Brown case SNDRV_PCM_RATE_11025: 5110a1bf553SMark Brown adn |= 0x4 << 1; 5120a1bf553SMark Brown break; 5130a1bf553SMark Brown case SNDRV_PCM_RATE_16000: 5140a1bf553SMark Brown adn |= 0x3 << 1; 5150a1bf553SMark Brown break; 5160a1bf553SMark Brown case SNDRV_PCM_RATE_22050: 5170a1bf553SMark Brown adn |= 0x2 << 1; 5180a1bf553SMark Brown break; 5190a1bf553SMark Brown case SNDRV_PCM_RATE_32000: 5200a1bf553SMark Brown adn |= 0x1 << 1; 5210a1bf553SMark Brown break; 5220a1bf553SMark Brown case SNDRV_PCM_RATE_44100: 5230a1bf553SMark Brown break; 5240a1bf553SMark Brown } 5250a1bf553SMark Brown 5260a1bf553SMark Brown wm8974_write(codec, WM8974_IFACE, iface); 5270a1bf553SMark Brown wm8974_write(codec, WM8974_ADD, adn); 5280a1bf553SMark Brown return 0; 5290a1bf553SMark Brown } 5300a1bf553SMark Brown 5310a1bf553SMark Brown static int wm8974_mute(struct snd_soc_dai *dai, int mute) 5320a1bf553SMark Brown { 5330a1bf553SMark Brown struct snd_soc_codec *codec = dai->codec; 5340a1bf553SMark Brown u16 mute_reg = wm8974_read_reg_cache(codec, WM8974_DAC) & 0xffbf; 5350a1bf553SMark Brown 5360a1bf553SMark Brown if (mute) 5370a1bf553SMark Brown wm8974_write(codec, WM8974_DAC, mute_reg | 0x40); 5380a1bf553SMark Brown else 5390a1bf553SMark Brown wm8974_write(codec, WM8974_DAC, mute_reg); 5400a1bf553SMark Brown return 0; 5410a1bf553SMark Brown } 5420a1bf553SMark Brown 5430a1bf553SMark Brown /* liam need to make this lower power with dapm */ 5440a1bf553SMark Brown static int wm8974_set_bias_level(struct snd_soc_codec *codec, 5450a1bf553SMark Brown enum snd_soc_bias_level level) 5460a1bf553SMark Brown { 5470a1bf553SMark Brown switch (level) { 5480a1bf553SMark Brown case SND_SOC_BIAS_ON: 5490a1bf553SMark Brown wm8974_write(codec, WM8974_POWER1, 0x1ff); 5500a1bf553SMark Brown wm8974_write(codec, WM8974_POWER2, 0x1ff); 5510a1bf553SMark Brown wm8974_write(codec, WM8974_POWER3, 0x1ff); 5520a1bf553SMark Brown break; 5530a1bf553SMark Brown case SND_SOC_BIAS_PREPARE: 5540a1bf553SMark Brown break; 5550a1bf553SMark Brown case SND_SOC_BIAS_STANDBY: 5560a1bf553SMark Brown break; 5570a1bf553SMark Brown case SND_SOC_BIAS_OFF: 5580a1bf553SMark Brown wm8974_write(codec, WM8974_POWER1, 0x0); 5590a1bf553SMark Brown wm8974_write(codec, WM8974_POWER2, 0x0); 5600a1bf553SMark Brown wm8974_write(codec, WM8974_POWER3, 0x0); 5610a1bf553SMark Brown break; 5620a1bf553SMark Brown } 5630a1bf553SMark Brown codec->bias_level = level; 5640a1bf553SMark Brown return 0; 5650a1bf553SMark Brown } 5660a1bf553SMark Brown 5671a55b3f6SMark Brown #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) 5680a1bf553SMark Brown 5690a1bf553SMark Brown #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 5700a1bf553SMark Brown SNDRV_PCM_FMTBIT_S24_LE) 5710a1bf553SMark Brown 5720a1bf553SMark Brown static struct snd_soc_dai_ops wm8974_ops = { 5730a1bf553SMark Brown .hw_params = wm8974_pcm_hw_params, 5740a1bf553SMark Brown .digital_mute = wm8974_mute, 5750a1bf553SMark Brown .set_fmt = wm8974_set_dai_fmt, 5760a1bf553SMark Brown .set_clkdiv = wm8974_set_dai_clkdiv, 5770a1bf553SMark Brown .set_pll = wm8974_set_dai_pll, 5780a1bf553SMark Brown }; 5790a1bf553SMark Brown 5800a1bf553SMark Brown struct snd_soc_dai wm8974_dai = { 5810a1bf553SMark Brown .name = "WM8974 HiFi", 5820a1bf553SMark Brown .playback = { 5830a1bf553SMark Brown .stream_name = "Playback", 5840a1bf553SMark Brown .channels_min = 1, 5850a1bf553SMark Brown .channels_max = 1, 5860a1bf553SMark Brown .rates = WM8974_RATES, 5870a1bf553SMark Brown .formats = WM8974_FORMATS,}, 5880a1bf553SMark Brown .capture = { 5890a1bf553SMark Brown .stream_name = "Capture", 5900a1bf553SMark Brown .channels_min = 1, 5910a1bf553SMark Brown .channels_max = 1, 5920a1bf553SMark Brown .rates = WM8974_RATES, 5930a1bf553SMark Brown .formats = WM8974_FORMATS,}, 5940a1bf553SMark Brown .ops = &wm8974_ops, 5950a1bf553SMark Brown }; 5960a1bf553SMark Brown EXPORT_SYMBOL_GPL(wm8974_dai); 5970a1bf553SMark Brown 5980a1bf553SMark Brown static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) 5990a1bf553SMark Brown { 6000a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 6010a1bf553SMark Brown struct snd_soc_codec *codec = socdev->card->codec; 6020a1bf553SMark Brown 6030a1bf553SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); 6040a1bf553SMark Brown return 0; 6050a1bf553SMark Brown } 6060a1bf553SMark Brown 6070a1bf553SMark Brown static int wm8974_resume(struct platform_device *pdev) 6080a1bf553SMark Brown { 6090a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 6100a1bf553SMark Brown struct snd_soc_codec *codec = socdev->card->codec; 6110a1bf553SMark Brown int i; 6120a1bf553SMark Brown u8 data[2]; 6130a1bf553SMark Brown u16 *cache = codec->reg_cache; 6140a1bf553SMark Brown 6150a1bf553SMark Brown /* Sync reg_cache with the hardware */ 6160a1bf553SMark Brown for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { 6170a1bf553SMark Brown data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 6180a1bf553SMark Brown data[1] = cache[i] & 0x00ff; 6190a1bf553SMark Brown codec->hw_write(codec->control_data, data, 2); 6200a1bf553SMark Brown } 6210a1bf553SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 6220a1bf553SMark Brown wm8974_set_bias_level(codec, codec->suspend_bias_level); 6230a1bf553SMark Brown return 0; 6240a1bf553SMark Brown } 6250a1bf553SMark Brown 626*4fcbbb67SMark Brown static int wm8974_probe(struct platform_device *pdev) 6270a1bf553SMark Brown { 628*4fcbbb67SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 629*4fcbbb67SMark Brown struct snd_soc_codec *codec; 6300a1bf553SMark Brown int ret = 0; 6310a1bf553SMark Brown 632*4fcbbb67SMark Brown if (wm8974_codec == NULL) { 633*4fcbbb67SMark Brown dev_err(&pdev->dev, "Codec device not registered\n"); 634*4fcbbb67SMark Brown return -ENODEV; 635*4fcbbb67SMark Brown } 6360a1bf553SMark Brown 637*4fcbbb67SMark Brown socdev->card->codec = wm8974_codec; 638*4fcbbb67SMark Brown codec = wm8974_codec; 6390a1bf553SMark Brown 6400a1bf553SMark Brown /* register pcms */ 6410a1bf553SMark Brown ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 6420a1bf553SMark Brown if (ret < 0) { 643*4fcbbb67SMark Brown dev_err(codec->dev, "failed to create pcms: %d\n", ret); 6440a1bf553SMark Brown goto pcm_err; 6450a1bf553SMark Brown } 6460a1bf553SMark Brown 647*4fcbbb67SMark Brown snd_soc_add_controls(codec, wm8974_snd_controls, 648*4fcbbb67SMark Brown ARRAY_SIZE(wm8974_snd_controls)); 6490a1bf553SMark Brown wm8974_add_widgets(codec); 6500a1bf553SMark Brown ret = snd_soc_init_card(socdev); 6510a1bf553SMark Brown if (ret < 0) { 652*4fcbbb67SMark Brown dev_err(codec->dev, "failed to register card: %d\n", ret); 6530a1bf553SMark Brown goto card_err; 6540a1bf553SMark Brown } 655*4fcbbb67SMark Brown 6560a1bf553SMark Brown return ret; 6570a1bf553SMark Brown 6580a1bf553SMark Brown card_err: 6590a1bf553SMark Brown snd_soc_free_pcms(socdev); 6600a1bf553SMark Brown snd_soc_dapm_free(socdev); 6610a1bf553SMark Brown pcm_err: 6620a1bf553SMark Brown return ret; 6630a1bf553SMark Brown } 6640a1bf553SMark Brown 6650a1bf553SMark Brown /* power down chip */ 6660a1bf553SMark Brown static int wm8974_remove(struct platform_device *pdev) 6670a1bf553SMark Brown { 6680a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 6690a1bf553SMark Brown 6700a1bf553SMark Brown snd_soc_free_pcms(socdev); 6710a1bf553SMark Brown snd_soc_dapm_free(socdev); 6720a1bf553SMark Brown 6730a1bf553SMark Brown return 0; 6740a1bf553SMark Brown } 6750a1bf553SMark Brown 6760a1bf553SMark Brown struct snd_soc_codec_device soc_codec_dev_wm8974 = { 6770a1bf553SMark Brown .probe = wm8974_probe, 6780a1bf553SMark Brown .remove = wm8974_remove, 6790a1bf553SMark Brown .suspend = wm8974_suspend, 6800a1bf553SMark Brown .resume = wm8974_resume, 6810a1bf553SMark Brown }; 6820a1bf553SMark Brown EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); 6830a1bf553SMark Brown 684*4fcbbb67SMark Brown static __devinit int wm8974_register(struct wm8974_priv *wm8974) 685*4fcbbb67SMark Brown { 686*4fcbbb67SMark Brown int ret; 687*4fcbbb67SMark Brown struct snd_soc_codec *codec = &wm8974->codec; 688*4fcbbb67SMark Brown 689*4fcbbb67SMark Brown if (wm8974_codec) { 690*4fcbbb67SMark Brown dev_err(codec->dev, "Another WM8974 is registered\n"); 691*4fcbbb67SMark Brown return -EINVAL; 692*4fcbbb67SMark Brown } 693*4fcbbb67SMark Brown 694*4fcbbb67SMark Brown mutex_init(&codec->mutex); 695*4fcbbb67SMark Brown INIT_LIST_HEAD(&codec->dapm_widgets); 696*4fcbbb67SMark Brown INIT_LIST_HEAD(&codec->dapm_paths); 697*4fcbbb67SMark Brown 698*4fcbbb67SMark Brown codec->private_data = wm8974; 699*4fcbbb67SMark Brown codec->name = "WM8974"; 700*4fcbbb67SMark Brown codec->owner = THIS_MODULE; 701*4fcbbb67SMark Brown codec->read = wm8974_read_reg_cache; 702*4fcbbb67SMark Brown codec->write = wm8974_write; 703*4fcbbb67SMark Brown codec->bias_level = SND_SOC_BIAS_OFF; 704*4fcbbb67SMark Brown codec->set_bias_level = wm8974_set_bias_level; 705*4fcbbb67SMark Brown codec->dai = &wm8974_dai; 706*4fcbbb67SMark Brown codec->num_dai = 1; 707*4fcbbb67SMark Brown codec->reg_cache_size = WM8974_CACHEREGNUM; 708*4fcbbb67SMark Brown codec->reg_cache = &wm8974->reg_cache; 709*4fcbbb67SMark Brown 710*4fcbbb67SMark Brown memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg)); 711*4fcbbb67SMark Brown 712*4fcbbb67SMark Brown ret = wm8974_reset(codec); 713*4fcbbb67SMark Brown if (ret < 0) { 714*4fcbbb67SMark Brown dev_err(codec->dev, "Failed to issue reset\n"); 715*4fcbbb67SMark Brown return ret; 716*4fcbbb67SMark Brown } 717*4fcbbb67SMark Brown 718*4fcbbb67SMark Brown wm8974_dai.dev = codec->dev; 719*4fcbbb67SMark Brown 720*4fcbbb67SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 721*4fcbbb67SMark Brown 722*4fcbbb67SMark Brown wm8974_codec = codec; 723*4fcbbb67SMark Brown 724*4fcbbb67SMark Brown ret = snd_soc_register_codec(codec); 725*4fcbbb67SMark Brown if (ret != 0) { 726*4fcbbb67SMark Brown dev_err(codec->dev, "Failed to register codec: %d\n", ret); 727*4fcbbb67SMark Brown return ret; 728*4fcbbb67SMark Brown } 729*4fcbbb67SMark Brown 730*4fcbbb67SMark Brown ret = snd_soc_register_dai(&wm8974_dai); 731*4fcbbb67SMark Brown if (ret != 0) { 732*4fcbbb67SMark Brown dev_err(codec->dev, "Failed to register DAI: %d\n", ret); 733*4fcbbb67SMark Brown snd_soc_unregister_codec(codec); 734*4fcbbb67SMark Brown return ret; 735*4fcbbb67SMark Brown } 736*4fcbbb67SMark Brown 737*4fcbbb67SMark Brown return 0; 738*4fcbbb67SMark Brown } 739*4fcbbb67SMark Brown 740*4fcbbb67SMark Brown static __devexit void wm8974_unregister(struct wm8974_priv *wm8974) 741*4fcbbb67SMark Brown { 742*4fcbbb67SMark Brown wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF); 743*4fcbbb67SMark Brown snd_soc_unregister_dai(&wm8974_dai); 744*4fcbbb67SMark Brown snd_soc_unregister_codec(&wm8974->codec); 745*4fcbbb67SMark Brown kfree(wm8974); 746*4fcbbb67SMark Brown wm8974_codec = NULL; 747*4fcbbb67SMark Brown } 748*4fcbbb67SMark Brown 749*4fcbbb67SMark Brown static __devinit int wm8974_i2c_probe(struct i2c_client *i2c, 750*4fcbbb67SMark Brown const struct i2c_device_id *id) 751*4fcbbb67SMark Brown { 752*4fcbbb67SMark Brown struct wm8974_priv *wm8974; 753*4fcbbb67SMark Brown struct snd_soc_codec *codec; 754*4fcbbb67SMark Brown 755*4fcbbb67SMark Brown wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL); 756*4fcbbb67SMark Brown if (wm8974 == NULL) 757*4fcbbb67SMark Brown return -ENOMEM; 758*4fcbbb67SMark Brown 759*4fcbbb67SMark Brown codec = &wm8974->codec; 760*4fcbbb67SMark Brown codec->hw_write = (hw_write_t)i2c_master_send; 761*4fcbbb67SMark Brown 762*4fcbbb67SMark Brown i2c_set_clientdata(i2c, wm8974); 763*4fcbbb67SMark Brown codec->control_data = i2c; 764*4fcbbb67SMark Brown 765*4fcbbb67SMark Brown codec->dev = &i2c->dev; 766*4fcbbb67SMark Brown 767*4fcbbb67SMark Brown return wm8974_register(wm8974); 768*4fcbbb67SMark Brown } 769*4fcbbb67SMark Brown 770*4fcbbb67SMark Brown static __devexit int wm8974_i2c_remove(struct i2c_client *client) 771*4fcbbb67SMark Brown { 772*4fcbbb67SMark Brown struct wm8974_priv *wm8974 = i2c_get_clientdata(client); 773*4fcbbb67SMark Brown wm8974_unregister(wm8974); 774*4fcbbb67SMark Brown return 0; 775*4fcbbb67SMark Brown } 776*4fcbbb67SMark Brown 777*4fcbbb67SMark Brown static const struct i2c_device_id wm8974_i2c_id[] = { 778*4fcbbb67SMark Brown { "wm8974", 0 }, 779*4fcbbb67SMark Brown { } 780*4fcbbb67SMark Brown }; 781*4fcbbb67SMark Brown MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id); 782*4fcbbb67SMark Brown 783*4fcbbb67SMark Brown static struct i2c_driver wm8974_i2c_driver = { 784*4fcbbb67SMark Brown .driver = { 785*4fcbbb67SMark Brown .name = "WM8974 I2C Codec", 786*4fcbbb67SMark Brown .owner = THIS_MODULE, 787*4fcbbb67SMark Brown }, 788*4fcbbb67SMark Brown .probe = wm8974_i2c_probe, 789*4fcbbb67SMark Brown .remove = __devexit_p(wm8974_i2c_remove), 790*4fcbbb67SMark Brown .id_table = wm8974_i2c_id, 791*4fcbbb67SMark Brown }; 792*4fcbbb67SMark Brown 7930a1bf553SMark Brown static int __init wm8974_modinit(void) 7940a1bf553SMark Brown { 795*4fcbbb67SMark Brown return i2c_add_driver(&wm8974_i2c_driver); 7960a1bf553SMark Brown } 7970a1bf553SMark Brown module_init(wm8974_modinit); 7980a1bf553SMark Brown 7990a1bf553SMark Brown static void __exit wm8974_exit(void) 8000a1bf553SMark Brown { 801*4fcbbb67SMark Brown i2c_del_driver(&wm8974_i2c_driver); 8020a1bf553SMark Brown } 8030a1bf553SMark Brown module_exit(wm8974_exit); 8040a1bf553SMark Brown 8050a1bf553SMark Brown MODULE_DESCRIPTION("ASoC WM8974 driver"); 8060a1bf553SMark Brown MODULE_AUTHOR("Liam Girdwood"); 8070a1bf553SMark Brown MODULE_LICENSE("GPL"); 808