/* * stac9766.c -- ALSA SoC STAC9766 codec support * * Copyright 2009 Jon Smirl, Digispeaker * Author: Jon Smirl * * 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; either version 2 of the License, or (at your * option) any later version. * * Features:- * * o Support for AC97 Codec, S/PDIF */ #include #include #include #include #include #include #include #include #include #include #include #include "stac9766.h" #define STAC9766_VERSION "0.10" /* * STAC9766 register cache */ static const u16 stac9766_reg[] = { 0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */ 0x0000, 0x0000, 0x8008, 0x8008, /* e */ 0x8808, 0x8808, 0x8808, 0x8808, /* 16 */ 0x8808, 0x0000, 0x8000, 0x0000, /* 1e */ 0x0000, 0x0000, 0x0000, 0x000f, /* 26 */ 0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */ 0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */ 0x0000, 0x2000, 0x0000, 0x0100, /* 3e */ 0x0000, 0x0000, 0x0080, 0x0000, /* 46 */ 0x0000, 0x0000, 0x0003, 0xffff, /* 4e */ 0x0000, 0x0000, 0x0000, 0x0000, /* 56 */ 0x4000, 0x0000, 0x0000, 0x0000, /* 5e */ 0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 6e */ 0x0000, 0x0000, 0x0000, 0x0006, /* 76 */ 0x0000, 0x0000, 0x0000, 0x0000, /* 7e */ }; static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX", "Line", "Stereo Mix", "Mono Mix", "Phone"}; static const char *stac9766_mono_mux[] = {"Mix", "Mic"}; static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"}; static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"}; static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"}; static const char *stac9766_record_all_mux[] = {"All analog", "Analog plus DAC"}; static const char *stac9766_boost1[] = {"0dB", "10dB"}; static const char *stac9766_boost2[] = {"0dB", "20dB"}; static const char *stac9766_stereo_mic[] = {"Off", "On"}; static const struct soc_enum stac9766_record_enum = SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, stac9766_record_mux); static const struct soc_enum stac9766_mono_enum = SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 9, 2, stac9766_mono_mux); static const struct soc_enum stac9766_mic_enum = SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, stac9766_mic_mux); static const struct soc_enum stac9766_SPDIF_enum = SOC_ENUM_SINGLE(AC97_STAC_DA_CONTROL, 1, 2, stac9766_SPDIF_mux); static const struct soc_enum stac9766_popbypass_enum = SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 15, 2, stac9766_popbypass_mux); static const struct soc_enum stac9766_record_all_enum = SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 12, 2, stac9766_record_all_mux); static const struct soc_enum stac9766_boost1_enum = SOC_ENUM_SINGLE(AC97_MIC, 6, 2, stac9766_boost1); /* 0/10dB */ static const struct soc_enum stac9766_boost2_enum = SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 2, 2, stac9766_boost2); /* 0/20dB */ static const struct soc_enum stac9766_stereo_mic_enum = SOC_ENUM_SINGLE(AC97_STAC_STEREO_MIC, 2, 1, stac9766_stereo_mic); static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0); static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250); static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0); static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200); static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = { SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv), SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1), SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1, master_tlv), SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1), SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1, master_tlv), SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1), SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv), SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1), SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv), SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1), SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1), SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv), SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1), SOC_ENUM("Mic Boost1", stac9766_boost1_enum), SOC_ENUM("Mic Boost2", stac9766_boost2_enum), SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv), SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1), SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum), SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv), SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1), SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv), SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1), SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv), SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1), SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv), SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1), SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv), SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1), SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0), SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1), SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0), SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum), SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum), SOC_ENUM("Record All Mux", stac9766_record_all_enum), SOC_ENUM("Record Mux", stac9766_record_enum), SOC_ENUM("Mono Mux", stac9766_mono_enum), SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum), }; static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg, unsigned int val) { u16 *cache = codec->reg_cache; if (reg > AC97_STAC_PAGE0) { stac9766_ac97_write(codec, AC97_INT_PAGING, 0); soc_ac97_ops.write(codec->ac97, reg, val); stac9766_ac97_write(codec, AC97_INT_PAGING, 1); return 0; } if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) return -EIO; soc_ac97_ops.write(codec->ac97, reg, val); cache[reg / 2] = val; return 0; } static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec, unsigned int reg) { u16 val = 0, *cache = codec->reg_cache; if (reg > AC97_STAC_PAGE0) { stac9766_ac97_write(codec, AC97_INT_PAGING, 0); val = soc_ac97_ops.read(codec->ac97, reg - AC97_STAC_PAGE0); stac9766_ac97_write(codec, AC97_INT_PAGING, 1); return val; } if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) return -EIO; if (reg == AC97_RESET || reg == AC97_GPIO_STATUS || reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 || reg == AC97_VENDOR_ID2) { val = soc_ac97_ops.read(codec->ac97, reg); return val; } return cache[reg / 2]; } static int ac97_analog_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct snd_pcm_runtime *runtime = substream->runtime; unsigned short reg, vra; vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); vra |= 0x1; /* enable variable rate audio */ vra &= ~0x4; /* disable SPDIF output */ stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) reg = AC97_PCM_FRONT_DAC_RATE; else reg = AC97_PCM_LR_ADC_RATE; return stac9766_ac97_write(codec, reg, runtime->rate); } static int ac97_digital_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; struct snd_pcm_runtime *runtime = substream->runtime; unsigned short reg, vra; stac9766_ac97_write(codec, AC97_SPDIF, 0x2002); vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); vra |= 0x5; /* Enable VRA and SPDIF out */ stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); reg = AC97_PCM_FRONT_DAC_RATE; return stac9766_ac97_write(codec, reg, runtime->rate); } static int stac9766_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { switch (level) { case SND_SOC_BIAS_ON: /* full On */ case SND_SOC_BIAS_PREPARE: /* partial On */ case SND_SOC_BIAS_STANDBY: /* Off, with power */ stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000); break; case SND_SOC_BIAS_OFF: /* Off, without power */ /* disable everything including AC link */ stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff); break; } codec->dapm.bias_level = level; return 0; } static int stac9766_reset(struct snd_soc_codec *codec, int try_warm) { if (try_warm && soc_ac97_ops.warm_reset) { soc_ac97_ops.warm_reset(codec->ac97); if (stac9766_ac97_read(codec, 0) == stac9766_reg[0]) return 1; } soc_ac97_ops.reset(codec->ac97); if (soc_ac97_ops.warm_reset) soc_ac97_ops.warm_reset(codec->ac97); if (stac9766_ac97_read(codec, 0) != stac9766_reg[0]) return -EIO; return 0; } static int stac9766_codec_suspend(struct snd_soc_codec *codec, pm_message_t state) { stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF); return 0; } static int stac9766_codec_resume(struct snd_soc_codec *codec) { u16 id, reset; reset = 0; /* give the codec an AC97 warm reset to start the link */ reset: if (reset > 5) { printk(KERN_ERR "stac9766 failed to resume"); return -EIO; } codec->ac97->bus->ops->warm_reset(codec->ac97); id = soc_ac97_ops.read(codec->ac97, AC97_VENDOR_ID2); if (id != 0x4c13) { stac9766_reset(codec, 0); reset++; goto reset; } stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY); return 0; } static struct snd_soc_dai_ops stac9766_dai_ops_analog = { .prepare = ac97_analog_prepare, }; static struct snd_soc_dai_ops stac9766_dai_ops_digital = { .prepare = ac97_digital_prepare, }; static struct snd_soc_dai_driver stac9766_dai[] = { { .name = "stac9766-hifi-analog", .ac97_control = 1, /* stream cababilities */ .playback = { .stream_name = "stac9766 analog", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_48000, .formats = SND_SOC_STD_AC97_FMTS, }, .capture = { .stream_name = "stac9766 analog", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_48000, .formats = SND_SOC_STD_AC97_FMTS, }, /* alsa ops */ .ops = &stac9766_dai_ops_analog, }, { .name = "stac9766-hifi-IEC958", .ac97_control = 1, /* stream cababilities */ .playback = { .stream_name = "stac9766 IEC958", .channels_min = 1, .channels_max = 2, .rates = SNDRV_PCM_RATE_32000 | \ SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, }, /* alsa ops */ .ops = &stac9766_dai_ops_digital, } }; static int stac9766_codec_probe(struct snd_soc_codec *codec) { int ret = 0; printk(KERN_INFO "STAC9766 SoC Audio Codec %s\n", STAC9766_VERSION); ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); if (ret < 0) goto codec_err; /* do a cold reset for the controller and then try * a warm reset followed by an optional cold reset for codec */ stac9766_reset(codec, 0); ret = stac9766_reset(codec, 1); if (ret < 0) { printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n"); goto codec_err; } stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY); snd_soc_add_controls(codec, stac9766_snd_ac97_controls, ARRAY_SIZE(stac9766_snd_ac97_controls)); return 0; codec_err: snd_soc_free_ac97_codec(codec); return ret; } static int stac9766_codec_remove(struct snd_soc_codec *codec) { snd_soc_free_ac97_codec(codec); return 0; } static struct snd_soc_codec_driver soc_codec_dev_stac9766 = { .write = stac9766_ac97_write, .read = stac9766_ac97_read, .set_bias_level = stac9766_set_bias_level, .probe = stac9766_codec_probe, .remove = stac9766_codec_remove, .suspend = stac9766_codec_suspend, .resume = stac9766_codec_resume, .reg_cache_size = sizeof(stac9766_reg), .reg_word_size = sizeof(u16), .reg_cache_step = 2, }; static __devinit int stac9766_probe(struct platform_device *pdev) { return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai)); } static int __devexit stac9766_remove(struct platform_device *pdev) { snd_soc_unregister_codec(&pdev->dev); return 0; } static struct platform_driver stac9766_codec_driver = { .driver = { .name = "stac9766-codec", .owner = THIS_MODULE, }, .probe = stac9766_probe, .remove = __devexit_p(stac9766_remove), }; static int __init stac9766_init(void) { return platform_driver_register(&stac9766_codec_driver); } module_init(stac9766_init); static void __exit stac9766_exit(void) { platform_driver_unregister(&stac9766_codec_driver); } module_exit(stac9766_exit); MODULE_DESCRIPTION("ASoC stac9766 driver"); MODULE_AUTHOR("Jon Smirl "); MODULE_LICENSE("GPL");