| /* |
| * wm9705.c -- ALSA Soc WM9705 codec support |
| * |
| * Copyright 2008 Ian Molton <spyro@f2s.com> |
| * |
| * 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 <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/device.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/ac97_codec.h> |
| #include <sound/initval.h> |
| #include <sound/soc.h> |
| |
| #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_pcm_runtime *runtime = substream->runtime; |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_codec *codec = rtd->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 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, pm_message_t msg) |
| { |
| 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_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), |
| }; |
| |
| static int __init wm9705_init(void) |
| { |
| return platform_driver_register(&wm9705_codec_driver); |
| } |
| module_init(wm9705_init); |
| |
| static void __exit wm9705_exit(void) |
| { |
| platform_driver_unregister(&wm9705_codec_driver); |
| } |
| module_exit(wm9705_exit); |
| |
| MODULE_DESCRIPTION("ASoC WM9705 driver"); |
| MODULE_AUTHOR("Ian Molton"); |
| MODULE_LICENSE("GPL v2"); |
