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/kernel.h> 160a1bf553SMark Brown #include <linux/init.h> 170a1bf553SMark Brown #include <linux/delay.h> 180a1bf553SMark Brown #include <linux/pm.h> 190a1bf553SMark Brown #include <linux/i2c.h> 200a1bf553SMark Brown #include <linux/platform_device.h> 210a1bf553SMark Brown #include <sound/core.h> 220a1bf553SMark Brown #include <sound/pcm.h> 230a1bf553SMark Brown #include <sound/pcm_params.h> 240a1bf553SMark Brown #include <sound/soc.h> 250a1bf553SMark Brown #include <sound/soc-dapm.h> 260a1bf553SMark Brown #include <sound/initval.h> 27a5f8d2f1SMark Brown #include <sound/tlv.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 49df1ef7a3SMark Brown #define WM8974_POWER1_BIASEN 0x08 5048c03ce7SGuennadi Liakhovetski #define WM8974_POWER1_BUFIOEN 0x04 51df1ef7a3SMark Brown 524fcbbb67SMark Brown struct wm8974_priv { 534fcbbb67SMark Brown struct snd_soc_codec codec; 544fcbbb67SMark Brown u16 reg_cache[WM8974_CACHEREGNUM]; 554fcbbb67SMark Brown }; 564fcbbb67SMark Brown 574fcbbb67SMark Brown static struct snd_soc_codec *wm8974_codec; 584fcbbb67SMark Brown 591e97f50bSMark Brown #define wm8974_reset(c) snd_soc_write(c, WM8974_RESET, 0) 600a1bf553SMark Brown 610a1bf553SMark Brown static const char *wm8974_companding[] = {"Off", "NC", "u-law", "A-law" }; 620a1bf553SMark Brown static const char *wm8974_deemp[] = {"None", "32kHz", "44.1kHz", "48kHz" }; 630a1bf553SMark Brown static const char *wm8974_eqmode[] = {"Capture", "Playback" }; 640a1bf553SMark Brown static const char *wm8974_bw[] = {"Narrow", "Wide" }; 650a1bf553SMark Brown static const char *wm8974_eq1[] = {"80Hz", "105Hz", "135Hz", "175Hz" }; 660a1bf553SMark Brown static const char *wm8974_eq2[] = {"230Hz", "300Hz", "385Hz", "500Hz" }; 670a1bf553SMark Brown static const char *wm8974_eq3[] = {"650Hz", "850Hz", "1.1kHz", "1.4kHz" }; 680a1bf553SMark Brown static const char *wm8974_eq4[] = {"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz" }; 690a1bf553SMark Brown static const char *wm8974_eq5[] = {"5.3kHz", "6.9kHz", "9kHz", "11.7kHz" }; 700a1bf553SMark Brown static const char *wm8974_alc[] = {"ALC", "Limiter" }; 710a1bf553SMark Brown 720a1bf553SMark Brown static const struct soc_enum wm8974_enum[] = { 730a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_COMP, 1, 4, wm8974_companding), /* adc */ 740a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_COMP, 3, 4, wm8974_companding), /* dac */ 750a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_DAC, 4, 4, wm8974_deemp), 760a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ1, 8, 2, wm8974_eqmode), 770a1bf553SMark Brown 780a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ1, 5, 4, wm8974_eq1), 790a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ2, 8, 2, wm8974_bw), 800a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ2, 5, 4, wm8974_eq2), 810a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ3, 8, 2, wm8974_bw), 820a1bf553SMark Brown 830a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ3, 5, 4, wm8974_eq3), 840a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ4, 8, 2, wm8974_bw), 850a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ4, 5, 4, wm8974_eq4), 860a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ5, 8, 2, wm8974_bw), 870a1bf553SMark Brown 880a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_EQ5, 5, 4, wm8974_eq5), 890a1bf553SMark Brown SOC_ENUM_SINGLE(WM8974_ALC3, 8, 2, wm8974_alc), 900a1bf553SMark Brown }; 910a1bf553SMark Brown 928a123ee2SMark Brown static const char *wm8974_auxmode_text[] = { "Buffer", "Mixer" }; 938a123ee2SMark Brown 948a123ee2SMark Brown static const struct soc_enum wm8974_auxmode = 958a123ee2SMark Brown SOC_ENUM_SINGLE(WM8974_INPUT, 3, 2, wm8974_auxmode_text); 968a123ee2SMark Brown 97a5f8d2f1SMark Brown static const DECLARE_TLV_DB_SCALE(digital_tlv, -12750, 50, 1); 98a5f8d2f1SMark Brown static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0); 99a5f8d2f1SMark Brown static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1200, 75, 0); 100a5f8d2f1SMark Brown static const DECLARE_TLV_DB_SCALE(spk_tlv, -5700, 100, 0); 101a5f8d2f1SMark Brown 1020a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_snd_controls[] = { 1030a1bf553SMark Brown 1040a1bf553SMark Brown SOC_SINGLE("Digital Loopback Switch", WM8974_COMP, 0, 1, 0), 1050a1bf553SMark Brown 1060a1bf553SMark Brown SOC_ENUM("DAC Companding", wm8974_enum[1]), 1070a1bf553SMark Brown SOC_ENUM("ADC Companding", wm8974_enum[0]), 1080a1bf553SMark Brown 1090a1bf553SMark Brown SOC_ENUM("Playback De-emphasis", wm8974_enum[2]), 1100a1bf553SMark Brown SOC_SINGLE("DAC Inversion Switch", WM8974_DAC, 0, 1, 0), 1110a1bf553SMark Brown 112a5f8d2f1SMark Brown SOC_SINGLE_TLV("PCM Volume", WM8974_DACVOL, 0, 255, 0, digital_tlv), 1130a1bf553SMark Brown 1140a1bf553SMark Brown SOC_SINGLE("High Pass Filter Switch", WM8974_ADC, 8, 1, 0), 1150a1bf553SMark Brown SOC_SINGLE("High Pass Cut Off", WM8974_ADC, 4, 7, 0), 11625cbf465Sjavier Martin SOC_SINGLE("ADC Inversion Switch", WM8974_ADC, 0, 1, 0), 1170a1bf553SMark Brown 118a5f8d2f1SMark Brown SOC_SINGLE_TLV("Capture Volume", WM8974_ADCVOL, 0, 255, 0, digital_tlv), 1190a1bf553SMark Brown 1200a1bf553SMark Brown SOC_ENUM("Equaliser Function", wm8974_enum[3]), 1210a1bf553SMark Brown SOC_ENUM("EQ1 Cut Off", wm8974_enum[4]), 122a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ1 Volume", WM8974_EQ1, 0, 24, 1, eq_tlv), 1230a1bf553SMark Brown 1240a1bf553SMark Brown SOC_ENUM("Equaliser EQ2 Bandwith", wm8974_enum[5]), 1250a1bf553SMark Brown SOC_ENUM("EQ2 Cut Off", wm8974_enum[6]), 126a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ2 Volume", WM8974_EQ2, 0, 24, 1, eq_tlv), 1270a1bf553SMark Brown 1280a1bf553SMark Brown SOC_ENUM("Equaliser EQ3 Bandwith", wm8974_enum[7]), 1290a1bf553SMark Brown SOC_ENUM("EQ3 Cut Off", wm8974_enum[8]), 130a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ3 Volume", WM8974_EQ3, 0, 24, 1, eq_tlv), 1310a1bf553SMark Brown 1320a1bf553SMark Brown SOC_ENUM("Equaliser EQ4 Bandwith", wm8974_enum[9]), 1330a1bf553SMark Brown SOC_ENUM("EQ4 Cut Off", wm8974_enum[10]), 134a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ4 Volume", WM8974_EQ4, 0, 24, 1, eq_tlv), 1350a1bf553SMark Brown 1360a1bf553SMark Brown SOC_ENUM("Equaliser EQ5 Bandwith", wm8974_enum[11]), 1370a1bf553SMark Brown SOC_ENUM("EQ5 Cut Off", wm8974_enum[12]), 138a5f8d2f1SMark Brown SOC_SINGLE_TLV("EQ5 Volume", WM8974_EQ5, 0, 24, 1, eq_tlv), 1390a1bf553SMark Brown 1400a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Switch", WM8974_DACLIM1, 8, 1, 0), 1410a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Decay", WM8974_DACLIM1, 4, 15, 0), 1420a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Attack", WM8974_DACLIM1, 0, 15, 0), 1430a1bf553SMark Brown 1440a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Threshold", WM8974_DACLIM2, 4, 7, 0), 1450a1bf553SMark Brown SOC_SINGLE("DAC Playback Limiter Boost", WM8974_DACLIM2, 0, 15, 0), 1460a1bf553SMark Brown 1470a1bf553SMark Brown SOC_SINGLE("ALC Enable Switch", WM8974_ALC1, 8, 1, 0), 1480a1bf553SMark Brown SOC_SINGLE("ALC Capture Max Gain", WM8974_ALC1, 3, 7, 0), 1490a1bf553SMark Brown SOC_SINGLE("ALC Capture Min Gain", WM8974_ALC1, 0, 7, 0), 1500a1bf553SMark Brown 1510a1bf553SMark Brown SOC_SINGLE("ALC Capture ZC Switch", WM8974_ALC2, 8, 1, 0), 1520a1bf553SMark Brown SOC_SINGLE("ALC Capture Hold", WM8974_ALC2, 4, 7, 0), 1530a1bf553SMark Brown SOC_SINGLE("ALC Capture Target", WM8974_ALC2, 0, 15, 0), 1540a1bf553SMark Brown 1550a1bf553SMark Brown SOC_ENUM("ALC Capture Mode", wm8974_enum[13]), 1560a1bf553SMark Brown SOC_SINGLE("ALC Capture Decay", WM8974_ALC3, 4, 15, 0), 1570a1bf553SMark Brown SOC_SINGLE("ALC Capture Attack", WM8974_ALC3, 0, 15, 0), 1580a1bf553SMark Brown 1590a1bf553SMark Brown SOC_SINGLE("ALC Capture Noise Gate Switch", WM8974_NGATE, 3, 1, 0), 1600a1bf553SMark Brown SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8974_NGATE, 0, 7, 0), 1610a1bf553SMark Brown 1620a1bf553SMark Brown SOC_SINGLE("Capture PGA ZC Switch", WM8974_INPPGA, 7, 1, 0), 163a5f8d2f1SMark Brown SOC_SINGLE_TLV("Capture PGA Volume", WM8974_INPPGA, 0, 63, 0, inpga_tlv), 1640a1bf553SMark Brown 1650a1bf553SMark Brown SOC_SINGLE("Speaker Playback ZC Switch", WM8974_SPKVOL, 7, 1, 0), 1660a1bf553SMark Brown SOC_SINGLE("Speaker Playback Switch", WM8974_SPKVOL, 6, 1, 1), 1678a123ee2SMark Brown SOC_SINGLE_TLV("Speaker Playback Volume", WM8974_SPKVOL, 0, 63, 0, spk_tlv), 1688a123ee2SMark Brown 1698a123ee2SMark Brown SOC_ENUM("Aux Mode", wm8974_auxmode), 1700a1bf553SMark Brown 1710a1bf553SMark Brown SOC_SINGLE("Capture Boost(+20dB)", WM8974_ADCBOOST, 8, 1, 0), 1728a123ee2SMark Brown SOC_SINGLE("Mono Playback Switch", WM8974_MONOMIX, 6, 1, 1), 173b2c3e923SGuennadi Liakhovetski 174b2c3e923SGuennadi Liakhovetski /* DAC / ADC oversampling */ 175b2c3e923SGuennadi Liakhovetski SOC_SINGLE("DAC 128x Oversampling Switch", WM8974_DAC, 8, 1, 0), 176b2c3e923SGuennadi Liakhovetski SOC_SINGLE("ADC 128x Oversampling Switch", WM8974_ADC, 8, 1, 0), 1770a1bf553SMark Brown }; 1780a1bf553SMark Brown 1790a1bf553SMark Brown /* Speaker Output Mixer */ 1800a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_speaker_mixer_controls[] = { 1810a1bf553SMark Brown SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_SPKMIX, 1, 1, 0), 1820a1bf553SMark Brown SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_SPKMIX, 5, 1, 0), 1830a1bf553SMark Brown SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_SPKMIX, 0, 1, 1), 1840a1bf553SMark Brown }; 1850a1bf553SMark Brown 1860a1bf553SMark Brown /* Mono Output Mixer */ 1870a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_mono_mixer_controls[] = { 1880a1bf553SMark Brown SOC_DAPM_SINGLE("Line Bypass Switch", WM8974_MONOMIX, 1, 1, 0), 1890a1bf553SMark Brown SOC_DAPM_SINGLE("Aux Playback Switch", WM8974_MONOMIX, 2, 1, 0), 1908a123ee2SMark Brown SOC_DAPM_SINGLE("PCM Playback Switch", WM8974_MONOMIX, 0, 1, 0), 1918a123ee2SMark Brown }; 1928a123ee2SMark Brown 1938a123ee2SMark Brown /* Boost mixer */ 1948a123ee2SMark Brown static const struct snd_kcontrol_new wm8974_boost_mixer[] = { 1958a123ee2SMark Brown SOC_DAPM_SINGLE("Aux Switch", WM8974_INPPGA, 6, 1, 0), 1968a123ee2SMark Brown }; 1978a123ee2SMark Brown 1988a123ee2SMark Brown /* Input PGA */ 1998a123ee2SMark Brown static const struct snd_kcontrol_new wm8974_inpga[] = { 2008a123ee2SMark Brown SOC_DAPM_SINGLE("Aux Switch", WM8974_INPUT, 2, 1, 0), 2018a123ee2SMark Brown SOC_DAPM_SINGLE("MicN Switch", WM8974_INPUT, 1, 1, 0), 2028a123ee2SMark Brown SOC_DAPM_SINGLE("MicP Switch", WM8974_INPUT, 0, 1, 0), 2030a1bf553SMark Brown }; 2040a1bf553SMark Brown 2050a1bf553SMark Brown /* AUX Input boost vol */ 2060a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_aux_boost_controls = 2070a1bf553SMark Brown SOC_DAPM_SINGLE("Aux Volume", WM8974_ADCBOOST, 0, 7, 0); 2080a1bf553SMark Brown 2090a1bf553SMark Brown /* Mic Input boost vol */ 2100a1bf553SMark Brown static const struct snd_kcontrol_new wm8974_mic_boost_controls = 2110a1bf553SMark Brown SOC_DAPM_SINGLE("Mic Volume", WM8974_ADCBOOST, 4, 7, 0); 2120a1bf553SMark Brown 2130a1bf553SMark Brown static const struct snd_soc_dapm_widget wm8974_dapm_widgets[] = { 2140a1bf553SMark Brown SND_SOC_DAPM_MIXER("Speaker Mixer", WM8974_POWER3, 2, 0, 2150a1bf553SMark Brown &wm8974_speaker_mixer_controls[0], 2160a1bf553SMark Brown ARRAY_SIZE(wm8974_speaker_mixer_controls)), 2170a1bf553SMark Brown SND_SOC_DAPM_MIXER("Mono Mixer", WM8974_POWER3, 3, 0, 2180a1bf553SMark Brown &wm8974_mono_mixer_controls[0], 2190a1bf553SMark Brown ARRAY_SIZE(wm8974_mono_mixer_controls)), 2200a1bf553SMark Brown SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8974_POWER3, 0, 0), 2218a123ee2SMark Brown SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8974_POWER2, 0, 0), 2220a1bf553SMark Brown SND_SOC_DAPM_PGA("Aux Input", WM8974_POWER1, 6, 0, NULL, 0), 2230a1bf553SMark Brown SND_SOC_DAPM_PGA("SpkN Out", WM8974_POWER3, 5, 0, NULL, 0), 2240a1bf553SMark Brown SND_SOC_DAPM_PGA("SpkP Out", WM8974_POWER3, 6, 0, NULL, 0), 2250a1bf553SMark Brown SND_SOC_DAPM_PGA("Mono Out", WM8974_POWER3, 7, 0, NULL, 0), 2260a1bf553SMark Brown 2278a123ee2SMark Brown SND_SOC_DAPM_MIXER("Input PGA", WM8974_POWER2, 2, 0, wm8974_inpga, 2288a123ee2SMark Brown ARRAY_SIZE(wm8974_inpga)), 2298a123ee2SMark Brown SND_SOC_DAPM_MIXER("Boost Mixer", WM8974_POWER2, 4, 0, 2308a123ee2SMark Brown wm8974_boost_mixer, ARRAY_SIZE(wm8974_boost_mixer)), 2310a1bf553SMark Brown 2320a1bf553SMark Brown SND_SOC_DAPM_MICBIAS("Mic Bias", WM8974_POWER1, 4, 0), 2330a1bf553SMark Brown 2340a1bf553SMark Brown SND_SOC_DAPM_INPUT("MICN"), 2350a1bf553SMark Brown SND_SOC_DAPM_INPUT("MICP"), 2360a1bf553SMark Brown SND_SOC_DAPM_INPUT("AUX"), 2370a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("MONOOUT"), 2380a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("SPKOUTP"), 2390a1bf553SMark Brown SND_SOC_DAPM_OUTPUT("SPKOUTN"), 2400a1bf553SMark Brown }; 2410a1bf553SMark Brown 2420a1bf553SMark Brown static const struct snd_soc_dapm_route audio_map[] = { 2430a1bf553SMark Brown /* Mono output mixer */ 2440a1bf553SMark Brown {"Mono Mixer", "PCM Playback Switch", "DAC"}, 2450a1bf553SMark Brown {"Mono Mixer", "Aux Playback Switch", "Aux Input"}, 2460a1bf553SMark Brown {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"}, 2470a1bf553SMark Brown 2480a1bf553SMark Brown /* Speaker output mixer */ 2490a1bf553SMark Brown {"Speaker Mixer", "PCM Playback Switch", "DAC"}, 2500a1bf553SMark Brown {"Speaker Mixer", "Aux Playback Switch", "Aux Input"}, 2510a1bf553SMark Brown {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"}, 2520a1bf553SMark Brown 2530a1bf553SMark Brown /* Outputs */ 2540a1bf553SMark Brown {"Mono Out", NULL, "Mono Mixer"}, 2550a1bf553SMark Brown {"MONOOUT", NULL, "Mono Out"}, 2560a1bf553SMark Brown {"SpkN Out", NULL, "Speaker Mixer"}, 2570a1bf553SMark Brown {"SpkP Out", NULL, "Speaker Mixer"}, 2580a1bf553SMark Brown {"SPKOUTN", NULL, "SpkN Out"}, 2590a1bf553SMark Brown {"SPKOUTP", NULL, "SpkP Out"}, 2600a1bf553SMark Brown 2610a1bf553SMark Brown /* Boost Mixer */ 2628a123ee2SMark Brown {"ADC", NULL, "Boost Mixer"}, 2638a123ee2SMark Brown {"Boost Mixer", "Aux Switch", "Aux Input"}, 2648a123ee2SMark Brown {"Boost Mixer", NULL, "Input PGA"}, 2658a123ee2SMark Brown {"Boost Mixer", NULL, "MICP"}, 2668a123ee2SMark Brown 2678a123ee2SMark Brown /* Input PGA */ 2688a123ee2SMark Brown {"Input PGA", "Aux Switch", "Aux Input"}, 2698a123ee2SMark Brown {"Input PGA", "MicN Switch", "MICN"}, 2708a123ee2SMark Brown {"Input PGA", "MicP Switch", "MICP"}, 2710a1bf553SMark Brown 2720a1bf553SMark Brown /* Inputs */ 2738a123ee2SMark Brown {"Aux Input", NULL, "AUX"}, 2740a1bf553SMark Brown }; 2750a1bf553SMark Brown 2760a1bf553SMark Brown static int wm8974_add_widgets(struct snd_soc_codec *codec) 2770a1bf553SMark Brown { 2780a1bf553SMark Brown snd_soc_dapm_new_controls(codec, wm8974_dapm_widgets, 2790a1bf553SMark Brown ARRAY_SIZE(wm8974_dapm_widgets)); 2800a1bf553SMark Brown 2810a1bf553SMark Brown snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 2820a1bf553SMark Brown 2830a1bf553SMark Brown return 0; 2840a1bf553SMark Brown } 2850a1bf553SMark Brown 2860a1bf553SMark Brown struct pll_ { 287c36b2fc7SMark Brown unsigned int pre_div:1; 2880a1bf553SMark Brown unsigned int n:4; 2890a1bf553SMark Brown unsigned int k; 2900a1bf553SMark Brown }; 2910a1bf553SMark Brown 29291d0c3ecSMark Brown /* The size in bits of the pll divide multiplied by 10 29391d0c3ecSMark Brown * to allow rounding later */ 29491d0c3ecSMark Brown #define FIXED_PLL_SIZE ((1 << 24) * 10) 29591d0c3ecSMark Brown 296c36b2fc7SMark Brown static void pll_factors(struct pll_ *pll_div, 297c36b2fc7SMark Brown unsigned int target, unsigned int source) 29891d0c3ecSMark Brown { 29991d0c3ecSMark Brown unsigned long long Kpart; 30091d0c3ecSMark Brown unsigned int K, Ndiv, Nmod; 30191d0c3ecSMark Brown 302c36b2fc7SMark Brown /* There is a fixed divide by 4 in the output path */ 303c36b2fc7SMark Brown target *= 4; 304c36b2fc7SMark Brown 30591d0c3ecSMark Brown Ndiv = target / source; 30691d0c3ecSMark Brown if (Ndiv < 6) { 307c36b2fc7SMark Brown source /= 2; 308c36b2fc7SMark Brown pll_div->pre_div = 1; 30991d0c3ecSMark Brown Ndiv = target / source; 31091d0c3ecSMark Brown } else 311c36b2fc7SMark Brown pll_div->pre_div = 0; 31291d0c3ecSMark Brown 31391d0c3ecSMark Brown if ((Ndiv < 6) || (Ndiv > 12)) 31491d0c3ecSMark Brown printk(KERN_WARNING 3158b83a193SMark Brown "WM8974 N value %u outwith recommended range!\n", 31691d0c3ecSMark Brown Ndiv); 31791d0c3ecSMark Brown 318c36b2fc7SMark Brown pll_div->n = Ndiv; 31991d0c3ecSMark Brown Nmod = target % source; 32091d0c3ecSMark Brown Kpart = FIXED_PLL_SIZE * (long long)Nmod; 32191d0c3ecSMark Brown 32291d0c3ecSMark Brown do_div(Kpart, source); 32391d0c3ecSMark Brown 32491d0c3ecSMark Brown K = Kpart & 0xFFFFFFFF; 32591d0c3ecSMark Brown 32691d0c3ecSMark Brown /* Check if we need to round */ 32791d0c3ecSMark Brown if ((K % 10) >= 5) 32891d0c3ecSMark Brown K += 5; 32991d0c3ecSMark Brown 33091d0c3ecSMark Brown /* Move down to proper range now rounding is done */ 33191d0c3ecSMark Brown K /= 10; 33291d0c3ecSMark Brown 333c36b2fc7SMark Brown pll_div->k = K; 33491d0c3ecSMark Brown } 3350a1bf553SMark Brown 33685488037SMark Brown static int wm8974_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, 33785488037SMark Brown int source, unsigned int freq_in, unsigned int freq_out) 3380a1bf553SMark Brown { 3390a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 340c36b2fc7SMark Brown struct pll_ pll_div; 3410a1bf553SMark Brown u16 reg; 3420a1bf553SMark Brown 3430a1bf553SMark Brown if (freq_in == 0 || freq_out == 0) { 34491d0c3ecSMark Brown /* Clock CODEC directly from MCLK */ 3451e97f50bSMark Brown reg = snd_soc_read(codec, WM8974_CLOCK); 3461e97f50bSMark Brown snd_soc_write(codec, WM8974_CLOCK, reg & 0x0ff); 34791d0c3ecSMark Brown 34891d0c3ecSMark Brown /* Turn off PLL */ 3491e97f50bSMark Brown reg = snd_soc_read(codec, WM8974_POWER1); 3501e97f50bSMark Brown snd_soc_write(codec, WM8974_POWER1, reg & 0x1df); 3510a1bf553SMark Brown return 0; 3520a1bf553SMark Brown } 3530a1bf553SMark Brown 354c36b2fc7SMark Brown pll_factors(&pll_div, freq_out, freq_in); 35591d0c3ecSMark Brown 3561e97f50bSMark Brown snd_soc_write(codec, WM8974_PLLN, (pll_div.pre_div << 4) | pll_div.n); 3571e97f50bSMark Brown snd_soc_write(codec, WM8974_PLLK1, pll_div.k >> 18); 3581e97f50bSMark Brown snd_soc_write(codec, WM8974_PLLK2, (pll_div.k >> 9) & 0x1ff); 3591e97f50bSMark Brown snd_soc_write(codec, WM8974_PLLK3, pll_div.k & 0x1ff); 3601e97f50bSMark Brown reg = snd_soc_read(codec, WM8974_POWER1); 3611e97f50bSMark Brown snd_soc_write(codec, WM8974_POWER1, reg | 0x020); 3621a55b3f6SMark Brown 36391d0c3ecSMark Brown /* Run CODEC from PLL instead of MCLK */ 3641e97f50bSMark Brown reg = snd_soc_read(codec, WM8974_CLOCK); 3651e97f50bSMark Brown snd_soc_write(codec, WM8974_CLOCK, reg | 0x100); 36691d0c3ecSMark Brown 36791d0c3ecSMark Brown return 0; 3680a1bf553SMark Brown } 3690a1bf553SMark Brown 3700a1bf553SMark Brown /* 3710a1bf553SMark Brown * Configure WM8974 clock dividers. 3720a1bf553SMark Brown */ 3730a1bf553SMark Brown static int wm8974_set_dai_clkdiv(struct snd_soc_dai *codec_dai, 3740a1bf553SMark Brown int div_id, int div) 3750a1bf553SMark Brown { 3760a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 3770a1bf553SMark Brown u16 reg; 3780a1bf553SMark Brown 3790a1bf553SMark Brown switch (div_id) { 3800a1bf553SMark Brown case WM8974_OPCLKDIV: 3811e97f50bSMark Brown reg = snd_soc_read(codec, WM8974_GPIO) & 0x1cf; 3821e97f50bSMark Brown snd_soc_write(codec, WM8974_GPIO, reg | div); 3830a1bf553SMark Brown break; 3840a1bf553SMark Brown case WM8974_MCLKDIV: 3851e97f50bSMark Brown reg = snd_soc_read(codec, WM8974_CLOCK) & 0x11f; 3861e97f50bSMark Brown snd_soc_write(codec, WM8974_CLOCK, reg | div); 3870a1bf553SMark Brown break; 3880a1bf553SMark Brown case WM8974_BCLKDIV: 3891e97f50bSMark Brown reg = snd_soc_read(codec, WM8974_CLOCK) & 0x1e3; 3901e97f50bSMark Brown snd_soc_write(codec, WM8974_CLOCK, reg | div); 3910a1bf553SMark Brown break; 3920a1bf553SMark Brown default: 3930a1bf553SMark Brown return -EINVAL; 3940a1bf553SMark Brown } 3950a1bf553SMark Brown 3960a1bf553SMark Brown return 0; 3970a1bf553SMark Brown } 3980a1bf553SMark Brown 3990a1bf553SMark Brown static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, 4000a1bf553SMark Brown unsigned int fmt) 4010a1bf553SMark Brown { 4020a1bf553SMark Brown struct snd_soc_codec *codec = codec_dai->codec; 4030a1bf553SMark Brown u16 iface = 0; 4041e97f50bSMark Brown u16 clk = snd_soc_read(codec, WM8974_CLOCK) & 0x1fe; 4050a1bf553SMark Brown 4060a1bf553SMark Brown /* set master/slave audio interface */ 4070a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { 4080a1bf553SMark Brown case SND_SOC_DAIFMT_CBM_CFM: 4090a1bf553SMark Brown clk |= 0x0001; 4100a1bf553SMark Brown break; 4110a1bf553SMark Brown case SND_SOC_DAIFMT_CBS_CFS: 4120a1bf553SMark Brown break; 4130a1bf553SMark Brown default: 4140a1bf553SMark Brown return -EINVAL; 4150a1bf553SMark Brown } 4160a1bf553SMark Brown 4170a1bf553SMark Brown /* interface format */ 4180a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 4190a1bf553SMark Brown case SND_SOC_DAIFMT_I2S: 4200a1bf553SMark Brown iface |= 0x0010; 4210a1bf553SMark Brown break; 4220a1bf553SMark Brown case SND_SOC_DAIFMT_RIGHT_J: 4230a1bf553SMark Brown break; 4240a1bf553SMark Brown case SND_SOC_DAIFMT_LEFT_J: 4250a1bf553SMark Brown iface |= 0x0008; 4260a1bf553SMark Brown break; 4270a1bf553SMark Brown case SND_SOC_DAIFMT_DSP_A: 4280a1bf553SMark Brown iface |= 0x00018; 4290a1bf553SMark Brown break; 4300a1bf553SMark Brown default: 4310a1bf553SMark Brown return -EINVAL; 4320a1bf553SMark Brown } 4330a1bf553SMark Brown 4340a1bf553SMark Brown /* clock inversion */ 4350a1bf553SMark Brown switch (fmt & SND_SOC_DAIFMT_INV_MASK) { 4360a1bf553SMark Brown case SND_SOC_DAIFMT_NB_NF: 4370a1bf553SMark Brown break; 4380a1bf553SMark Brown case SND_SOC_DAIFMT_IB_IF: 4390a1bf553SMark Brown iface |= 0x0180; 4400a1bf553SMark Brown break; 4410a1bf553SMark Brown case SND_SOC_DAIFMT_IB_NF: 4420a1bf553SMark Brown iface |= 0x0100; 4430a1bf553SMark Brown break; 4440a1bf553SMark Brown case SND_SOC_DAIFMT_NB_IF: 4450a1bf553SMark Brown iface |= 0x0080; 4460a1bf553SMark Brown break; 4470a1bf553SMark Brown default: 4480a1bf553SMark Brown return -EINVAL; 4490a1bf553SMark Brown } 4500a1bf553SMark Brown 4511e97f50bSMark Brown snd_soc_write(codec, WM8974_IFACE, iface); 4521e97f50bSMark Brown snd_soc_write(codec, WM8974_CLOCK, clk); 4530a1bf553SMark Brown return 0; 4540a1bf553SMark Brown } 4550a1bf553SMark Brown 4560a1bf553SMark Brown static int wm8974_pcm_hw_params(struct snd_pcm_substream *substream, 4570a1bf553SMark Brown struct snd_pcm_hw_params *params, 4580a1bf553SMark Brown struct snd_soc_dai *dai) 4590a1bf553SMark Brown { 4600a1bf553SMark Brown struct snd_soc_codec *codec = dai->codec; 4611e97f50bSMark Brown u16 iface = snd_soc_read(codec, WM8974_IFACE) & 0x19f; 4621e97f50bSMark Brown u16 adn = snd_soc_read(codec, WM8974_ADD) & 0x1f1; 4630a1bf553SMark Brown 4640a1bf553SMark Brown /* bit size */ 4650a1bf553SMark Brown switch (params_format(params)) { 4660a1bf553SMark Brown case SNDRV_PCM_FORMAT_S16_LE: 4670a1bf553SMark Brown break; 4680a1bf553SMark Brown case SNDRV_PCM_FORMAT_S20_3LE: 4690a1bf553SMark Brown iface |= 0x0020; 4700a1bf553SMark Brown break; 4710a1bf553SMark Brown case SNDRV_PCM_FORMAT_S24_LE: 4720a1bf553SMark Brown iface |= 0x0040; 4730a1bf553SMark Brown break; 4740a1bf553SMark Brown case SNDRV_PCM_FORMAT_S32_LE: 4750a1bf553SMark Brown iface |= 0x0060; 4760a1bf553SMark Brown break; 4770a1bf553SMark Brown } 4780a1bf553SMark Brown 4790a1bf553SMark Brown /* filter coefficient */ 4800a1bf553SMark Brown switch (params_rate(params)) { 481b3172f22SGuennadi Liakhovetski case 8000: 4820a1bf553SMark Brown adn |= 0x5 << 1; 4830a1bf553SMark Brown break; 484b3172f22SGuennadi Liakhovetski case 11025: 4850a1bf553SMark Brown adn |= 0x4 << 1; 4860a1bf553SMark Brown break; 487b3172f22SGuennadi Liakhovetski case 16000: 4880a1bf553SMark Brown adn |= 0x3 << 1; 4890a1bf553SMark Brown break; 490b3172f22SGuennadi Liakhovetski case 22050: 4910a1bf553SMark Brown adn |= 0x2 << 1; 4920a1bf553SMark Brown break; 493b3172f22SGuennadi Liakhovetski case 32000: 4940a1bf553SMark Brown adn |= 0x1 << 1; 4950a1bf553SMark Brown break; 496b3172f22SGuennadi Liakhovetski case 44100: 497b3172f22SGuennadi Liakhovetski case 48000: 4980a1bf553SMark Brown break; 4990a1bf553SMark Brown } 5000a1bf553SMark Brown 5011e97f50bSMark Brown snd_soc_write(codec, WM8974_IFACE, iface); 5021e97f50bSMark Brown snd_soc_write(codec, WM8974_ADD, adn); 5030a1bf553SMark Brown return 0; 5040a1bf553SMark Brown } 5050a1bf553SMark Brown 5060a1bf553SMark Brown static int wm8974_mute(struct snd_soc_dai *dai, int mute) 5070a1bf553SMark Brown { 5080a1bf553SMark Brown struct snd_soc_codec *codec = dai->codec; 5091e97f50bSMark Brown u16 mute_reg = snd_soc_read(codec, WM8974_DAC) & 0xffbf; 5100a1bf553SMark Brown 5110a1bf553SMark Brown if (mute) 5121e97f50bSMark Brown snd_soc_write(codec, WM8974_DAC, mute_reg | 0x40); 5130a1bf553SMark Brown else 5141e97f50bSMark Brown snd_soc_write(codec, WM8974_DAC, mute_reg); 5150a1bf553SMark Brown return 0; 5160a1bf553SMark Brown } 5170a1bf553SMark Brown 5180a1bf553SMark Brown /* liam need to make this lower power with dapm */ 5190a1bf553SMark Brown static int wm8974_set_bias_level(struct snd_soc_codec *codec, 5200a1bf553SMark Brown enum snd_soc_bias_level level) 5210a1bf553SMark Brown { 5221e97f50bSMark Brown u16 power1 = snd_soc_read(codec, WM8974_POWER1) & ~0x3; 523df1ef7a3SMark Brown 5240a1bf553SMark Brown switch (level) { 5250a1bf553SMark Brown case SND_SOC_BIAS_ON: 5260a1bf553SMark Brown case SND_SOC_BIAS_PREPARE: 527df1ef7a3SMark Brown power1 |= 0x1; /* VMID 50k */ 5281e97f50bSMark Brown snd_soc_write(codec, WM8974_POWER1, power1); 5290a1bf553SMark Brown break; 530df1ef7a3SMark Brown 5310a1bf553SMark Brown case SND_SOC_BIAS_STANDBY: 532df1ef7a3SMark Brown power1 |= WM8974_POWER1_BIASEN | WM8974_POWER1_BUFIOEN; 533df1ef7a3SMark Brown 534df1ef7a3SMark Brown if (codec->bias_level == SND_SOC_BIAS_OFF) { 535df1ef7a3SMark Brown /* Initial cap charge at VMID 5k */ 5361e97f50bSMark Brown snd_soc_write(codec, WM8974_POWER1, power1 | 0x3); 537df1ef7a3SMark Brown mdelay(100); 538df1ef7a3SMark Brown } 539df1ef7a3SMark Brown 540df1ef7a3SMark Brown power1 |= 0x2; /* VMID 500k */ 5411e97f50bSMark Brown snd_soc_write(codec, WM8974_POWER1, power1); 5420a1bf553SMark Brown break; 543df1ef7a3SMark Brown 5440a1bf553SMark Brown case SND_SOC_BIAS_OFF: 5451e97f50bSMark Brown snd_soc_write(codec, WM8974_POWER1, 0); 5461e97f50bSMark Brown snd_soc_write(codec, WM8974_POWER2, 0); 5471e97f50bSMark Brown snd_soc_write(codec, WM8974_POWER3, 0); 5480a1bf553SMark Brown break; 5490a1bf553SMark Brown } 550df1ef7a3SMark Brown 5510a1bf553SMark Brown codec->bias_level = level; 5520a1bf553SMark Brown return 0; 5530a1bf553SMark Brown } 5540a1bf553SMark Brown 5551a55b3f6SMark Brown #define WM8974_RATES (SNDRV_PCM_RATE_8000_48000) 5560a1bf553SMark Brown 5570a1bf553SMark Brown #define WM8974_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ 5580a1bf553SMark Brown SNDRV_PCM_FMTBIT_S24_LE) 5590a1bf553SMark Brown 5600a1bf553SMark Brown static struct snd_soc_dai_ops wm8974_ops = { 5610a1bf553SMark Brown .hw_params = wm8974_pcm_hw_params, 5620a1bf553SMark Brown .digital_mute = wm8974_mute, 5630a1bf553SMark Brown .set_fmt = wm8974_set_dai_fmt, 5640a1bf553SMark Brown .set_clkdiv = wm8974_set_dai_clkdiv, 5650a1bf553SMark Brown .set_pll = wm8974_set_dai_pll, 5660a1bf553SMark Brown }; 5670a1bf553SMark Brown 5680a1bf553SMark Brown struct snd_soc_dai wm8974_dai = { 5690a1bf553SMark Brown .name = "WM8974 HiFi", 5700a1bf553SMark Brown .playback = { 5710a1bf553SMark Brown .stream_name = "Playback", 5720a1bf553SMark Brown .channels_min = 1, 57333d81af4SMark Brown .channels_max = 2, /* Only 1 channel of data */ 5740a1bf553SMark Brown .rates = WM8974_RATES, 5750a1bf553SMark Brown .formats = WM8974_FORMATS,}, 5760a1bf553SMark Brown .capture = { 5770a1bf553SMark Brown .stream_name = "Capture", 5780a1bf553SMark Brown .channels_min = 1, 57933d81af4SMark Brown .channels_max = 2, /* Only 1 channel of data */ 5800a1bf553SMark Brown .rates = WM8974_RATES, 5810a1bf553SMark Brown .formats = WM8974_FORMATS,}, 5820a1bf553SMark Brown .ops = &wm8974_ops, 583cb11d39eSMark Brown .symmetric_rates = 1, 5840a1bf553SMark Brown }; 5850a1bf553SMark Brown EXPORT_SYMBOL_GPL(wm8974_dai); 5860a1bf553SMark Brown 5870a1bf553SMark Brown static int wm8974_suspend(struct platform_device *pdev, pm_message_t state) 5880a1bf553SMark Brown { 5890a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 5900a1bf553SMark Brown struct snd_soc_codec *codec = socdev->card->codec; 5910a1bf553SMark Brown 5920a1bf553SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_OFF); 5930a1bf553SMark Brown return 0; 5940a1bf553SMark Brown } 5950a1bf553SMark Brown 5960a1bf553SMark Brown static int wm8974_resume(struct platform_device *pdev) 5970a1bf553SMark Brown { 5980a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 5990a1bf553SMark Brown struct snd_soc_codec *codec = socdev->card->codec; 6000a1bf553SMark Brown int i; 6010a1bf553SMark Brown u8 data[2]; 6020a1bf553SMark Brown u16 *cache = codec->reg_cache; 6030a1bf553SMark Brown 6040a1bf553SMark Brown /* Sync reg_cache with the hardware */ 6050a1bf553SMark Brown for (i = 0; i < ARRAY_SIZE(wm8974_reg); i++) { 6060a1bf553SMark Brown data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); 6070a1bf553SMark Brown data[1] = cache[i] & 0x00ff; 6080a1bf553SMark Brown codec->hw_write(codec->control_data, data, 2); 6090a1bf553SMark Brown } 6100a1bf553SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 6110a1bf553SMark Brown wm8974_set_bias_level(codec, codec->suspend_bias_level); 6120a1bf553SMark Brown return 0; 6130a1bf553SMark Brown } 6140a1bf553SMark Brown 6154fcbbb67SMark Brown static int wm8974_probe(struct platform_device *pdev) 6160a1bf553SMark Brown { 6174fcbbb67SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 6184fcbbb67SMark Brown struct snd_soc_codec *codec; 6190a1bf553SMark Brown int ret = 0; 6200a1bf553SMark Brown 6214fcbbb67SMark Brown if (wm8974_codec == NULL) { 6224fcbbb67SMark Brown dev_err(&pdev->dev, "Codec device not registered\n"); 6234fcbbb67SMark Brown return -ENODEV; 6244fcbbb67SMark Brown } 6250a1bf553SMark Brown 6264fcbbb67SMark Brown socdev->card->codec = wm8974_codec; 6274fcbbb67SMark Brown codec = wm8974_codec; 6280a1bf553SMark Brown 6290a1bf553SMark Brown /* register pcms */ 6300a1bf553SMark Brown ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 6310a1bf553SMark Brown if (ret < 0) { 6324fcbbb67SMark Brown dev_err(codec->dev, "failed to create pcms: %d\n", ret); 6330a1bf553SMark Brown goto pcm_err; 6340a1bf553SMark Brown } 6350a1bf553SMark Brown 6364fcbbb67SMark Brown snd_soc_add_controls(codec, wm8974_snd_controls, 6374fcbbb67SMark Brown ARRAY_SIZE(wm8974_snd_controls)); 6380a1bf553SMark Brown wm8974_add_widgets(codec); 6394fcbbb67SMark Brown 6400a1bf553SMark Brown return ret; 6410a1bf553SMark Brown 6420a1bf553SMark Brown pcm_err: 6430a1bf553SMark Brown return ret; 6440a1bf553SMark Brown } 6450a1bf553SMark Brown 6460a1bf553SMark Brown /* power down chip */ 6470a1bf553SMark Brown static int wm8974_remove(struct platform_device *pdev) 6480a1bf553SMark Brown { 6490a1bf553SMark Brown struct snd_soc_device *socdev = platform_get_drvdata(pdev); 6500a1bf553SMark Brown 6510a1bf553SMark Brown snd_soc_free_pcms(socdev); 6520a1bf553SMark Brown snd_soc_dapm_free(socdev); 6530a1bf553SMark Brown 6540a1bf553SMark Brown return 0; 6550a1bf553SMark Brown } 6560a1bf553SMark Brown 6570a1bf553SMark Brown struct snd_soc_codec_device soc_codec_dev_wm8974 = { 6580a1bf553SMark Brown .probe = wm8974_probe, 6590a1bf553SMark Brown .remove = wm8974_remove, 6600a1bf553SMark Brown .suspend = wm8974_suspend, 6610a1bf553SMark Brown .resume = wm8974_resume, 6620a1bf553SMark Brown }; 6630a1bf553SMark Brown EXPORT_SYMBOL_GPL(soc_codec_dev_wm8974); 6640a1bf553SMark Brown 6654fcbbb67SMark Brown static __devinit int wm8974_register(struct wm8974_priv *wm8974) 6664fcbbb67SMark Brown { 6674fcbbb67SMark Brown int ret; 6684fcbbb67SMark Brown struct snd_soc_codec *codec = &wm8974->codec; 6694fcbbb67SMark Brown 6704fcbbb67SMark Brown if (wm8974_codec) { 6714fcbbb67SMark Brown dev_err(codec->dev, "Another WM8974 is registered\n"); 6724fcbbb67SMark Brown return -EINVAL; 6734fcbbb67SMark Brown } 6744fcbbb67SMark Brown 6754fcbbb67SMark Brown mutex_init(&codec->mutex); 6764fcbbb67SMark Brown INIT_LIST_HEAD(&codec->dapm_widgets); 6774fcbbb67SMark Brown INIT_LIST_HEAD(&codec->dapm_paths); 6784fcbbb67SMark Brown 679*b2c812e2SMark Brown snd_soc_codec_set_drvdata(codec, wm8974); 6804fcbbb67SMark Brown codec->name = "WM8974"; 6814fcbbb67SMark Brown codec->owner = THIS_MODULE; 6824fcbbb67SMark Brown codec->bias_level = SND_SOC_BIAS_OFF; 6834fcbbb67SMark Brown codec->set_bias_level = wm8974_set_bias_level; 6844fcbbb67SMark Brown codec->dai = &wm8974_dai; 6854fcbbb67SMark Brown codec->num_dai = 1; 6864fcbbb67SMark Brown codec->reg_cache_size = WM8974_CACHEREGNUM; 6874fcbbb67SMark Brown codec->reg_cache = &wm8974->reg_cache; 6884fcbbb67SMark Brown 6891e97f50bSMark Brown ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_I2C); 6901e97f50bSMark Brown if (ret < 0) { 6911e97f50bSMark Brown dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 6921e97f50bSMark Brown goto err; 6931e97f50bSMark Brown } 6941e97f50bSMark Brown 6954fcbbb67SMark Brown memcpy(codec->reg_cache, wm8974_reg, sizeof(wm8974_reg)); 6964fcbbb67SMark Brown 6974fcbbb67SMark Brown ret = wm8974_reset(codec); 6984fcbbb67SMark Brown if (ret < 0) { 6994fcbbb67SMark Brown dev_err(codec->dev, "Failed to issue reset\n"); 7001e97f50bSMark Brown goto err; 7014fcbbb67SMark Brown } 7024fcbbb67SMark Brown 7034fcbbb67SMark Brown wm8974_dai.dev = codec->dev; 7044fcbbb67SMark Brown 7054fcbbb67SMark Brown wm8974_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 7064fcbbb67SMark Brown 7074fcbbb67SMark Brown wm8974_codec = codec; 7084fcbbb67SMark Brown 7094fcbbb67SMark Brown ret = snd_soc_register_codec(codec); 7104fcbbb67SMark Brown if (ret != 0) { 7114fcbbb67SMark Brown dev_err(codec->dev, "Failed to register codec: %d\n", ret); 7121e97f50bSMark Brown goto err; 7134fcbbb67SMark Brown } 7144fcbbb67SMark Brown 7154fcbbb67SMark Brown ret = snd_soc_register_dai(&wm8974_dai); 7164fcbbb67SMark Brown if (ret != 0) { 7174fcbbb67SMark Brown dev_err(codec->dev, "Failed to register DAI: %d\n", ret); 7181e97f50bSMark Brown goto err_codec; 7194fcbbb67SMark Brown } 7204fcbbb67SMark Brown 7214fcbbb67SMark Brown return 0; 7221e97f50bSMark Brown 7231e97f50bSMark Brown err_codec: 7241e97f50bSMark Brown snd_soc_unregister_codec(codec); 7251e97f50bSMark Brown err: 7261e97f50bSMark Brown kfree(wm8974); 7271e97f50bSMark Brown return ret; 7284fcbbb67SMark Brown } 7294fcbbb67SMark Brown 7304fcbbb67SMark Brown static __devexit void wm8974_unregister(struct wm8974_priv *wm8974) 7314fcbbb67SMark Brown { 7324fcbbb67SMark Brown wm8974_set_bias_level(&wm8974->codec, SND_SOC_BIAS_OFF); 7334fcbbb67SMark Brown snd_soc_unregister_dai(&wm8974_dai); 7344fcbbb67SMark Brown snd_soc_unregister_codec(&wm8974->codec); 7354fcbbb67SMark Brown kfree(wm8974); 7364fcbbb67SMark Brown wm8974_codec = NULL; 7374fcbbb67SMark Brown } 7384fcbbb67SMark Brown 7394fcbbb67SMark Brown static __devinit int wm8974_i2c_probe(struct i2c_client *i2c, 7404fcbbb67SMark Brown const struct i2c_device_id *id) 7414fcbbb67SMark Brown { 7424fcbbb67SMark Brown struct wm8974_priv *wm8974; 7434fcbbb67SMark Brown struct snd_soc_codec *codec; 7444fcbbb67SMark Brown 7454fcbbb67SMark Brown wm8974 = kzalloc(sizeof(struct wm8974_priv), GFP_KERNEL); 7464fcbbb67SMark Brown if (wm8974 == NULL) 7474fcbbb67SMark Brown return -ENOMEM; 7484fcbbb67SMark Brown 7494fcbbb67SMark Brown codec = &wm8974->codec; 7504fcbbb67SMark Brown codec->hw_write = (hw_write_t)i2c_master_send; 7514fcbbb67SMark Brown 7524fcbbb67SMark Brown i2c_set_clientdata(i2c, wm8974); 7534fcbbb67SMark Brown codec->control_data = i2c; 7544fcbbb67SMark Brown 7554fcbbb67SMark Brown codec->dev = &i2c->dev; 7564fcbbb67SMark Brown 7574fcbbb67SMark Brown return wm8974_register(wm8974); 7584fcbbb67SMark Brown } 7594fcbbb67SMark Brown 7604fcbbb67SMark Brown static __devexit int wm8974_i2c_remove(struct i2c_client *client) 7614fcbbb67SMark Brown { 7624fcbbb67SMark Brown struct wm8974_priv *wm8974 = i2c_get_clientdata(client); 7634fcbbb67SMark Brown wm8974_unregister(wm8974); 7644fcbbb67SMark Brown return 0; 7654fcbbb67SMark Brown } 7664fcbbb67SMark Brown 7674fcbbb67SMark Brown static const struct i2c_device_id wm8974_i2c_id[] = { 7684fcbbb67SMark Brown { "wm8974", 0 }, 7694fcbbb67SMark Brown { } 7704fcbbb67SMark Brown }; 7714fcbbb67SMark Brown MODULE_DEVICE_TABLE(i2c, wm8974_i2c_id); 7724fcbbb67SMark Brown 7734fcbbb67SMark Brown static struct i2c_driver wm8974_i2c_driver = { 7744fcbbb67SMark Brown .driver = { 7758b83a193SMark Brown .name = "WM8974", 7764fcbbb67SMark Brown .owner = THIS_MODULE, 7774fcbbb67SMark Brown }, 7784fcbbb67SMark Brown .probe = wm8974_i2c_probe, 7794fcbbb67SMark Brown .remove = __devexit_p(wm8974_i2c_remove), 7804fcbbb67SMark Brown .id_table = wm8974_i2c_id, 7814fcbbb67SMark Brown }; 7824fcbbb67SMark Brown 7830a1bf553SMark Brown static int __init wm8974_modinit(void) 7840a1bf553SMark Brown { 7854fcbbb67SMark Brown return i2c_add_driver(&wm8974_i2c_driver); 7860a1bf553SMark Brown } 7870a1bf553SMark Brown module_init(wm8974_modinit); 7880a1bf553SMark Brown 7890a1bf553SMark Brown static void __exit wm8974_exit(void) 7900a1bf553SMark Brown { 7914fcbbb67SMark Brown i2c_del_driver(&wm8974_i2c_driver); 7920a1bf553SMark Brown } 7930a1bf553SMark Brown module_exit(wm8974_exit); 7940a1bf553SMark Brown 7950a1bf553SMark Brown MODULE_DESCRIPTION("ASoC WM8974 driver"); 7960a1bf553SMark Brown MODULE_AUTHOR("Liam Girdwood"); 7970a1bf553SMark Brown MODULE_LICENSE("GPL"); 798