1/* 2 * stac9766.c -- ALSA SoC STAC9766 codec support 3 * 4 * Copyright 2009 Jon Smirl, Digispeaker 5 * Author: Jon Smirl <jonsmirl@gmail.com> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the 9 * Free Software Foundation; either version 2 of the License, or (at your 10 * option) any later version. 11 * 12 * Features:- 13 * 14 * o Support for AC97 Codec, S/PDIF 15 */ 16 17#include <linux/init.h> 18#include <linux/slab.h> 19#include <linux/module.h> 20#include <linux/device.h> 21#include <sound/core.h> 22#include <sound/pcm.h> 23#include <sound/ac97_codec.h> 24#include <sound/initval.h> 25#include <sound/pcm_params.h> 26#include <sound/soc.h> 27#include <sound/tlv.h> 28 29#include "stac9766.h" 30 31#define STAC9766_VENDOR_ID 0x83847666 32#define STAC9766_VENDOR_ID_MASK 0xffffffff 33 34/* 35 * STAC9766 register cache 36 */ 37static const u16 stac9766_reg[] = { 38 0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */ 39 0x0000, 0x0000, 0x8008, 0x8008, /* e */ 40 0x8808, 0x8808, 0x8808, 0x8808, /* 16 */ 41 0x8808, 0x0000, 0x8000, 0x0000, /* 1e */ 42 0x0000, 0x0000, 0x0000, 0x000f, /* 26 */ 43 0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */ 44 0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */ 45 0x0000, 0x2000, 0x0000, 0x0100, /* 3e */ 46 0x0000, 0x0000, 0x0080, 0x0000, /* 46 */ 47 0x0000, 0x0000, 0x0003, 0xffff, /* 4e */ 48 0x0000, 0x0000, 0x0000, 0x0000, /* 56 */ 49 0x4000, 0x0000, 0x0000, 0x0000, /* 5e */ 50 0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */ 51 0x0000, 0x0000, 0x0000, 0x0000, /* 6e */ 52 0x0000, 0x0000, 0x0000, 0x0006, /* 76 */ 53 0x0000, 0x0000, 0x0000, 0x0000, /* 7e */ 54}; 55 56static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX", 57 "Line", "Stereo Mix", "Mono Mix", "Phone"}; 58static const char *stac9766_mono_mux[] = {"Mix", "Mic"}; 59static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"}; 60static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"}; 61static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"}; 62static const char *stac9766_record_all_mux[] = {"All analog", 63 "Analog plus DAC"}; 64static const char *stac9766_boost1[] = {"0dB", "10dB"}; 65static const char *stac9766_boost2[] = {"0dB", "20dB"}; 66static const char *stac9766_stereo_mic[] = {"Off", "On"}; 67 68static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum, 69 AC97_REC_SEL, 8, 0, stac9766_record_mux); 70static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum, 71 AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux); 72static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum, 73 AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux); 74static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum, 75 AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux); 76static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum, 77 AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux); 78static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum, 79 AC97_STAC_ANALOG_SPECIAL, 12, 80 stac9766_record_all_mux); 81static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum, 82 AC97_MIC, 6, stac9766_boost1); /* 0/10dB */ 83static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum, 84 AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */ 85static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum, 86 AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic); 87 88static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0); 89static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250); 90static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0); 91static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200); 92 93static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = { 94 SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv), 95 SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1), 96 SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1, 97 master_tlv), 98 SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1), 99 SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1, 100 master_tlv), 101 SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1), 102 103 SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv), 104 SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1), 105 106 107 SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv), 108 SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1), 109 SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1), 110 SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv), 111 SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1), 112 113 SOC_ENUM("Mic Boost1", stac9766_boost1_enum), 114 SOC_ENUM("Mic Boost2", stac9766_boost2_enum), 115 SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv), 116 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1), 117 SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum), 118 119 SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv), 120 SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1), 121 SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv), 122 SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1), 123 SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv), 124 SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1), 125 SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv), 126 SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1), 127 128 SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv), 129 SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1), 130 SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0), 131 SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1), 132 SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0), 133 134 SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum), 135 SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum), 136 SOC_ENUM("Record All Mux", stac9766_record_all_enum), 137 SOC_ENUM("Record Mux", stac9766_record_enum), 138 SOC_ENUM("Mono Mux", stac9766_mono_enum), 139 SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum), 140}; 141 142static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg, 143 unsigned int val) 144{ 145 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 146 u16 *cache = codec->reg_cache; 147 148 if (reg > AC97_STAC_PAGE0) { 149 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 150 soc_ac97_ops->write(ac97, reg, val); 151 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 152 return 0; 153 } 154 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 155 return -EIO; 156 157 soc_ac97_ops->write(ac97, reg, val); 158 cache[reg / 2] = val; 159 return 0; 160} 161 162static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec, 163 unsigned int reg) 164{ 165 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 166 u16 val = 0, *cache = codec->reg_cache; 167 168 if (reg > AC97_STAC_PAGE0) { 169 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 170 val = soc_ac97_ops->read(ac97, reg - AC97_STAC_PAGE0); 171 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 172 return val; 173 } 174 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 175 return -EIO; 176 177 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS || 178 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 || 179 reg == AC97_VENDOR_ID2) { 180 181 val = soc_ac97_ops->read(ac97, reg); 182 return val; 183 } 184 return cache[reg / 2]; 185} 186 187static int ac97_analog_prepare(struct snd_pcm_substream *substream, 188 struct snd_soc_dai *dai) 189{ 190 struct snd_soc_codec *codec = dai->codec; 191 struct snd_pcm_runtime *runtime = substream->runtime; 192 unsigned short reg, vra; 193 194 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 195 196 vra |= 0x1; /* enable variable rate audio */ 197 vra &= ~0x4; /* disable SPDIF output */ 198 199 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 200 201 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 202 reg = AC97_PCM_FRONT_DAC_RATE; 203 else 204 reg = AC97_PCM_LR_ADC_RATE; 205 206 return stac9766_ac97_write(codec, reg, runtime->rate); 207} 208 209static int ac97_digital_prepare(struct snd_pcm_substream *substream, 210 struct snd_soc_dai *dai) 211{ 212 struct snd_soc_codec *codec = dai->codec; 213 struct snd_pcm_runtime *runtime = substream->runtime; 214 unsigned short reg, vra; 215 216 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002); 217 218 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 219 vra |= 0x5; /* Enable VRA and SPDIF out */ 220 221 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 222 223 reg = AC97_PCM_FRONT_DAC_RATE; 224 225 return stac9766_ac97_write(codec, reg, runtime->rate); 226} 227 228static int stac9766_set_bias_level(struct snd_soc_codec *codec, 229 enum snd_soc_bias_level level) 230{ 231 switch (level) { 232 case SND_SOC_BIAS_ON: /* full On */ 233 case SND_SOC_BIAS_PREPARE: /* partial On */ 234 case SND_SOC_BIAS_STANDBY: /* Off, with power */ 235 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000); 236 break; 237 case SND_SOC_BIAS_OFF: /* Off, without power */ 238 /* disable everything including AC link */ 239 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff); 240 break; 241 } 242 return 0; 243} 244 245static int stac9766_codec_resume(struct snd_soc_codec *codec) 246{ 247 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 248 249 return snd_ac97_reset(ac97, true, STAC9766_VENDOR_ID, 250 STAC9766_VENDOR_ID_MASK); 251} 252 253static const struct snd_soc_dai_ops stac9766_dai_ops_analog = { 254 .prepare = ac97_analog_prepare, 255}; 256 257static const struct snd_soc_dai_ops stac9766_dai_ops_digital = { 258 .prepare = ac97_digital_prepare, 259}; 260 261static struct snd_soc_dai_driver stac9766_dai[] = { 262{ 263 .name = "stac9766-hifi-analog", 264 265 /* stream cababilities */ 266 .playback = { 267 .stream_name = "stac9766 analog", 268 .channels_min = 1, 269 .channels_max = 2, 270 .rates = SNDRV_PCM_RATE_8000_48000, 271 .formats = SND_SOC_STD_AC97_FMTS, 272 }, 273 .capture = { 274 .stream_name = "stac9766 analog", 275 .channels_min = 1, 276 .channels_max = 2, 277 .rates = SNDRV_PCM_RATE_8000_48000, 278 .formats = SND_SOC_STD_AC97_FMTS, 279 }, 280 /* alsa ops */ 281 .ops = &stac9766_dai_ops_analog, 282}, 283{ 284 .name = "stac9766-hifi-IEC958", 285 286 /* stream cababilities */ 287 .playback = { 288 .stream_name = "stac9766 IEC958", 289 .channels_min = 1, 290 .channels_max = 2, 291 .rates = SNDRV_PCM_RATE_32000 | \ 292 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 293 .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, 294 }, 295 /* alsa ops */ 296 .ops = &stac9766_dai_ops_digital, 297} 298}; 299 300static int stac9766_codec_probe(struct snd_soc_codec *codec) 301{ 302 struct snd_ac97 *ac97; 303 304 ac97 = snd_soc_new_ac97_codec(codec, STAC9766_VENDOR_ID, 305 STAC9766_VENDOR_ID_MASK); 306 if (IS_ERR(ac97)) 307 return PTR_ERR(ac97); 308 309 snd_soc_codec_set_drvdata(codec, ac97); 310 311 return 0; 312} 313 314static int stac9766_codec_remove(struct snd_soc_codec *codec) 315{ 316 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 317 318 snd_soc_free_ac97_codec(ac97); 319 return 0; 320} 321 322static struct snd_soc_codec_driver soc_codec_dev_stac9766 = { 323 .controls = stac9766_snd_ac97_controls, 324 .num_controls = ARRAY_SIZE(stac9766_snd_ac97_controls), 325 .write = stac9766_ac97_write, 326 .read = stac9766_ac97_read, 327 .set_bias_level = stac9766_set_bias_level, 328 .suspend_bias_off = true, 329 .probe = stac9766_codec_probe, 330 .remove = stac9766_codec_remove, 331 .resume = stac9766_codec_resume, 332 .reg_cache_size = ARRAY_SIZE(stac9766_reg), 333 .reg_word_size = sizeof(u16), 334 .reg_cache_step = 2, 335 .reg_cache_default = stac9766_reg, 336}; 337 338static int stac9766_probe(struct platform_device *pdev) 339{ 340 return snd_soc_register_codec(&pdev->dev, 341 &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai)); 342} 343 344static int stac9766_remove(struct platform_device *pdev) 345{ 346 snd_soc_unregister_codec(&pdev->dev); 347 return 0; 348} 349 350static struct platform_driver stac9766_codec_driver = { 351 .driver = { 352 .name = "stac9766-codec", 353 }, 354 355 .probe = stac9766_probe, 356 .remove = stac9766_remove, 357}; 358 359module_platform_driver(stac9766_codec_driver); 360 361MODULE_DESCRIPTION("ASoC stac9766 driver"); 362MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); 363MODULE_LICENSE("GPL"); 364