/* * wm9705.c -- ALSA Soc WM9705 codec support * * Copyright 2008 Ian Molton * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; Version 2 of the License only. * */ #include #include #include #include #include #include #include #include #include #include #include "wm9705.h" /* * WM9705 register cache */ static const u16 wm9705_reg[] = { 0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */ 0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */ 0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */ 0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */ 0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */ 0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */ 0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */ 0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */ 0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */ 0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */ }; static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = { SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1), SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1), SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1), SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1), SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1), SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1), SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1), SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1), SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1), SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1), SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1), SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1), SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1), SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0), SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0), SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1), }; static const char *wm9705_mic[] = {"Mic 1", "Mic 2"}; static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC", "Line", "Stereo Mix", "Mono Mix", "Phone"}; static const struct soc_enum wm9705_enum_mic = SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic); static const struct soc_enum wm9705_enum_rec_l = SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel); static const struct soc_enum wm9705_enum_rec_r = SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel); /* Headphone Mixer */ static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = { SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1), SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1), SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1), SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1), SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1), }; /* Mic source */ static const struct snd_kcontrol_new wm9705_mic_src_controls = SOC_DAPM_ENUM("Route", wm9705_enum_mic); /* Capture source */ static const struct snd_kcontrol_new wm9705_capture_selectl_controls = SOC_DAPM_ENUM("Route", wm9705_enum_rec_l); static const struct snd_kcontrol_new wm9705_capture_selectr_controls = SOC_DAPM_ENUM("Route", wm9705_enum_rec_r); /* DAPM widgets */ static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = { SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0, &wm9705_mic_src_controls), SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0, &wm9705_capture_selectl_controls), SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0, &wm9705_capture_selectr_controls), SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0, &wm9705_hp_mixer_controls[0], ARRAY_SIZE(wm9705_hp_mixer_controls)), SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_OUTPUT("HPOUTL"), SND_SOC_DAPM_OUTPUT("HPOUTR"), SND_SOC_DAPM_OUTPUT("LOUT"), SND_SOC_DAPM_OUTPUT("ROUT"), SND_SOC_DAPM_OUTPUT("MONOOUT"), SND_SOC_DAPM_INPUT("PHONE"), SND_SOC_DAPM_INPUT("LINEINL"), SND_SOC_DAPM_INPUT("LINEINR"), SND_SOC_DAPM_INPUT("CDINL"), SND_SOC_DAPM_INPUT("CDINR"), SND_SOC_DAPM_INPUT("PCBEEP"), SND_SOC_DAPM_INPUT("MIC1"), SND_SOC_DAPM_INPUT("MIC2"), }; /* Audio map * WM9705 has no switches to disable the route from the inputs to the HP mixer * so in order to prevent active inputs from forcing the audio outputs to be * constantly enabled, we use the mutes on those inputs to simulate such * controls. */ static const struct snd_soc_dapm_route wm9705_audio_map[] = { /* HP mixer */ {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"}, {"HP Mixer", "CD Playback Switch", "CD PGA"}, {"HP Mixer", "Mic Playback Switch", "Mic PGA"}, {"HP Mixer", "Phone Playback Switch", "Phone PGA"}, {"HP Mixer", "Line Playback Switch", "Line PGA"}, {"HP Mixer", NULL, "Left DAC"}, {"HP Mixer", NULL, "Right DAC"}, /* mono mixer */ {"Mono Mixer", NULL, "HP Mixer"}, /* outputs */ {"Headphone PGA", NULL, "HP Mixer"}, {"HPOUTL", NULL, "Headphone PGA"}, {"HPOUTR", NULL, "Headphone PGA"}, {"Line out PGA", NULL, "HP Mixer"}, {"LOUT", NULL, "Line out PGA"}, {"ROUT", NULL, "Line out PGA"}, {"Mono PGA", NULL, "Mono Mixer"}, {"MONOOUT", NULL, "Mono PGA"}, /* inputs */ {"CD PGA", NULL, "CDINL"}, {"CD PGA", NULL, "CDINR"}, {"Line PGA", NULL, "LINEINL"}, {"Line PGA", NULL, "LINEINR"}, {"Phone PGA", NULL, "PHONE"}, {"Mic Source", "Mic 1", "MIC1"}, {"Mic Source", "Mic 2", "MIC2"}, {"Mic PGA", NULL, "Mic Source"}, {"PCBEEP PGA", NULL, "PCBEEP"}, /* Left capture selector */ {"Left Capture Source", "Mic", "Mic Source"}, {"Left Capture Source", "CD", "CDINL"}, {"Left Capture Source", "Line", "LINEINL"}, {"Left Capture Source", "Stereo Mix", "HP Mixer"}, {"Left Capture Source", "Mono Mix", "HP Mixer"}, {"Left Capture Source", "Phone", "PHONE"}, /* Right capture source */ {"Right Capture Source", "Mic", "Mic Source"}, {"Right Capture Source", "CD", "CDINR"}, {"Right Capture Source", "Line", "LINEINR"}, {"Right Capture Source", "Stereo Mix", "HP Mixer"}, {"Right Capture Source", "Mono Mix", "HP Mixer"}, {"Right Capture Source", "Phone", "PHONE"}, {"ADC PGA", NULL, "Left Capture Source"}, {"ADC PGA", NULL, "Right Capture Source"}, /* ADC's */ {"Left ADC", NULL, "ADC PGA"}, {"Right ADC", NULL, "ADC PGA"}, }; /* We use a register cache to enhance read performance. */ static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg) { u16 *cache = codec->reg_cache; switch (reg) { case AC97_RESET: case AC97_VENDOR_ID1: case AC97_VENDOR_ID2: return soc_ac97_ops.read(codec->ac97, reg); default: reg = reg >> 1; if (reg >= (ARRAY_SIZE(wm9705_reg))) return -EIO; return cache[reg]; } } static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int val) { u16 *cache = codec->reg_cache; soc_ac97_ops.write(codec->ac97, reg, val); reg = reg >> 1; if (reg < (ARRAY_SIZE(wm9705_reg))) cache[reg] = val; return 0; } static int ac97_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; int reg; u16 vra; vra = ac97_read(codec, AC97_EXTENDED_STATUS); ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) reg = AC97_PCM_FRONT_DAC_RATE; else reg = AC97_PCM_LR_ADC_RATE; return ac97_write(codec, reg, runtime->rate); } #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ SNDRV_PCM_RATE_48000) static const struct snd_soc_dai_ops wm9705_dai_ops = { .prepare = ac97_prepare, }; static struct snd_soc_dai_driver wm9705_dai[] = { { .name = "wm9705-hifi", .ac97_control = 1, .playback = { .stream_name = "HiFi Playback", .channels_min = 1, .channels_max = 2, .rates = WM9705_AC97_RATES, .formats = SND_SOC_STD_AC97_FMTS, }, .capture = { .stream_name = "HiFi Capture", .channels_min = 1, .channels_max = 2, .rates = WM9705_AC97_RATES, .formats = SND_SOC_STD_AC97_FMTS, }, .ops = &wm9705_dai_ops, }, { .name = "wm9705-aux", .playback = { .stream_name = "Aux Playback", .channels_min = 1, .channels_max = 1, .rates = WM9705_AC97_RATES, .formats = SNDRV_PCM_FMTBIT_S16_LE, }, } }; static int wm9705_reset(struct snd_soc_codec *codec) { if (soc_ac97_ops.reset) { soc_ac97_ops.reset(codec->ac97); if (ac97_read(codec, 0) == wm9705_reg[0]) return 0; /* Success */ } return -EIO; } #ifdef CONFIG_PM static int wm9705_soc_suspend(struct snd_soc_codec *codec) { soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff); return 0; } static int wm9705_soc_resume(struct snd_soc_codec *codec) { int i, ret; u16 *cache = codec->reg_cache; ret = wm9705_reset(codec); if (ret < 0) { printk(KERN_ERR "could not reset AC97 codec\n"); return ret; } for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) { soc_ac97_ops.write(codec->ac97, i, cache[i>>1]); } return 0; } #else #define wm9705_soc_suspend NULL #define wm9705_soc_resume NULL #endif static int wm9705_soc_probe(struct snd_soc_codec *codec) { int ret = 0; printk(KERN_INFO "WM9705 SoC Audio Codec\n"); ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); if (ret < 0) { printk(KERN_ERR "wm9705: failed to register AC97 codec\n"); return ret; } ret = wm9705_reset(codec); if (ret) goto reset_err; snd_soc_add_codec_controls(codec, wm9705_snd_ac97_controls, ARRAY_SIZE(wm9705_snd_ac97_controls)); return 0; reset_err: snd_soc_free_ac97_codec(codec); return ret; } static int wm9705_soc_remove(struct snd_soc_codec *codec) { snd_soc_free_ac97_codec(codec); return 0; } static struct snd_soc_codec_driver soc_codec_dev_wm9705 = { .probe = wm9705_soc_probe, .remove = wm9705_soc_remove, .suspend = wm9705_soc_suspend, .resume = wm9705_soc_resume, .read = ac97_read, .write = ac97_write, .reg_cache_size = ARRAY_SIZE(wm9705_reg), .reg_word_size = sizeof(u16), .reg_cache_step = 2, .reg_cache_default = wm9705_reg, .dapm_widgets = wm9705_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets), .dapm_routes = wm9705_audio_map, .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map), }; static __devinit int wm9705_probe(struct platform_device *pdev) { return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai)); } static int __devexit wm9705_remove(struct platform_device *pdev) { snd_soc_unregister_codec(&pdev->dev); return 0; } static struct platform_driver wm9705_codec_driver = { .driver = { .name = "wm9705-codec", .owner = THIS_MODULE, }, .probe = wm9705_probe, .remove = __devexit_p(wm9705_remove), }; module_platform_driver(wm9705_codec_driver); MODULE_DESCRIPTION("ASoC WM9705 driver"); MODULE_AUTHOR("Ian Molton"); MODULE_LICENSE("GPL v2");