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 #include <sound/soc-of-simple.h> 29 30 #include "stac9766.h" 31 32 #define STAC9766_VERSION "0.10" 33 34 /* 35 * STAC9766 register cache 36 */ 37 static 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 56 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX", 57 "Line", "Stereo Mix", "Mono Mix", "Phone"}; 58 static const char *stac9766_mono_mux[] = {"Mix", "Mic"}; 59 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"}; 60 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"}; 61 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"}; 62 static const char *stac9766_record_all_mux[] = {"All analog", 63 "Analog plus DAC"}; 64 static const char *stac9766_boost1[] = {"0dB", "10dB"}; 65 static const char *stac9766_boost2[] = {"0dB", "20dB"}; 66 static const char *stac9766_stereo_mic[] = {"Off", "On"}; 67 68 static const struct soc_enum stac9766_record_enum = 69 SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, stac9766_record_mux); 70 static const struct soc_enum stac9766_mono_enum = 71 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 9, 2, stac9766_mono_mux); 72 static const struct soc_enum stac9766_mic_enum = 73 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, stac9766_mic_mux); 74 static const struct soc_enum stac9766_SPDIF_enum = 75 SOC_ENUM_SINGLE(AC97_STAC_DA_CONTROL, 1, 2, stac9766_SPDIF_mux); 76 static const struct soc_enum stac9766_popbypass_enum = 77 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 15, 2, stac9766_popbypass_mux); 78 static const struct soc_enum stac9766_record_all_enum = 79 SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 12, 2, 80 stac9766_record_all_mux); 81 static const struct soc_enum stac9766_boost1_enum = 82 SOC_ENUM_SINGLE(AC97_MIC, 6, 2, stac9766_boost1); /* 0/10dB */ 83 static const struct soc_enum stac9766_boost2_enum = 84 SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 2, 2, stac9766_boost2); /* 0/20dB */ 85 static const struct soc_enum stac9766_stereo_mic_enum = 86 SOC_ENUM_SINGLE(AC97_STAC_STEREO_MIC, 2, 1, stac9766_stereo_mic); 87 88 static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0); 89 static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250); 90 static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0); 91 static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200); 92 93 static 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 }; 141 142 static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg, 143 unsigned int val) 144 { 145 u16 *cache = codec->reg_cache; 146 147 if (reg > AC97_STAC_PAGE0) { 148 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 149 soc_ac97_ops.write(codec->ac97, reg, val); 150 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 151 return 0; 152 } 153 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 154 return -EIO; 155 156 soc_ac97_ops.write(codec->ac97, reg, val); 157 cache[reg / 2] = val; 158 return 0; 159 } 160 161 static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec, 162 unsigned int reg) 163 { 164 u16 val = 0, *cache = codec->reg_cache; 165 166 if (reg > AC97_STAC_PAGE0) { 167 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 168 val = soc_ac97_ops.read(codec->ac97, reg - AC97_STAC_PAGE0); 169 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 170 return val; 171 } 172 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 173 return -EIO; 174 175 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS || 176 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 || 177 reg == AC97_VENDOR_ID2) { 178 179 val = soc_ac97_ops.read(codec->ac97, reg); 180 return val; 181 } 182 return cache[reg / 2]; 183 } 184 185 static int ac97_analog_prepare(struct snd_pcm_substream *substream, 186 struct snd_soc_dai *dai) 187 { 188 struct snd_soc_codec *codec = dai->codec; 189 struct snd_pcm_runtime *runtime = substream->runtime; 190 unsigned short reg, vra; 191 192 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 193 194 vra |= 0x1; /* enable variable rate audio */ 195 vra &= ~0x4; /* disable SPDIF output */ 196 197 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 198 199 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 200 reg = AC97_PCM_FRONT_DAC_RATE; 201 else 202 reg = AC97_PCM_LR_ADC_RATE; 203 204 return stac9766_ac97_write(codec, reg, runtime->rate); 205 } 206 207 static int ac97_digital_prepare(struct snd_pcm_substream *substream, 208 struct snd_soc_dai *dai) 209 { 210 struct snd_soc_codec *codec = dai->codec; 211 struct snd_pcm_runtime *runtime = substream->runtime; 212 unsigned short reg, vra; 213 214 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002); 215 216 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 217 vra |= 0x5; /* Enable VRA and SPDIF out */ 218 219 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 220 221 reg = AC97_PCM_FRONT_DAC_RATE; 222 223 return stac9766_ac97_write(codec, reg, runtime->rate); 224 } 225 226 static int stac9766_set_bias_level(struct snd_soc_codec *codec, 227 enum snd_soc_bias_level level) 228 { 229 switch (level) { 230 case SND_SOC_BIAS_ON: /* full On */ 231 case SND_SOC_BIAS_PREPARE: /* partial On */ 232 case SND_SOC_BIAS_STANDBY: /* Off, with power */ 233 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000); 234 break; 235 case SND_SOC_BIAS_OFF: /* Off, without power */ 236 /* disable everything including AC link */ 237 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff); 238 break; 239 } 240 codec->bias_level = level; 241 return 0; 242 } 243 244 static int stac9766_reset(struct snd_soc_codec *codec, int try_warm) 245 { 246 if (try_warm && soc_ac97_ops.warm_reset) { 247 soc_ac97_ops.warm_reset(codec->ac97); 248 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0]) 249 return 1; 250 } 251 252 soc_ac97_ops.reset(codec->ac97); 253 if (soc_ac97_ops.warm_reset) 254 soc_ac97_ops.warm_reset(codec->ac97); 255 if (stac9766_ac97_read(codec, 0) != stac9766_reg[0]) 256 return -EIO; 257 return 0; 258 } 259 260 static int stac9766_codec_suspend(struct platform_device *pdev, 261 pm_message_t state) 262 { 263 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 264 struct snd_soc_codec *codec = socdev->card->codec; 265 266 stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF); 267 return 0; 268 } 269 270 static int stac9766_codec_resume(struct platform_device *pdev) 271 { 272 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 273 struct snd_soc_codec *codec = socdev->card->codec; 274 u16 id, reset; 275 276 reset = 0; 277 /* give the codec an AC97 warm reset to start the link */ 278 reset: 279 if (reset > 5) { 280 printk(KERN_ERR "stac9766 failed to resume"); 281 return -EIO; 282 } 283 codec->ac97->bus->ops->warm_reset(codec->ac97); 284 id = soc_ac97_ops.read(codec->ac97, AC97_VENDOR_ID2); 285 if (id != 0x4c13) { 286 stac9766_reset(codec, 0); 287 reset++; 288 goto reset; 289 } 290 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 291 292 return 0; 293 } 294 295 static struct snd_soc_dai_ops stac9766_dai_ops_analog = { 296 .prepare = ac97_analog_prepare, 297 }; 298 299 static struct snd_soc_dai_ops stac9766_dai_ops_digital = { 300 .prepare = ac97_digital_prepare, 301 }; 302 303 struct snd_soc_dai stac9766_dai[] = { 304 { 305 .name = "stac9766 analog", 306 .id = 0, 307 .ac97_control = 1, 308 309 /* stream cababilities */ 310 .playback = { 311 .stream_name = "stac9766 analog", 312 .channels_min = 1, 313 .channels_max = 2, 314 .rates = SNDRV_PCM_RATE_8000_48000, 315 .formats = SND_SOC_STD_AC97_FMTS, 316 }, 317 .capture = { 318 .stream_name = "stac9766 analog", 319 .channels_min = 1, 320 .channels_max = 2, 321 .rates = SNDRV_PCM_RATE_8000_48000, 322 .formats = SND_SOC_STD_AC97_FMTS, 323 }, 324 /* alsa ops */ 325 .ops = &stac9766_dai_ops_analog, 326 }, 327 { 328 .name = "stac9766 IEC958", 329 .id = 1, 330 .ac97_control = 1, 331 332 /* stream cababilities */ 333 .playback = { 334 .stream_name = "stac9766 IEC958", 335 .channels_min = 1, 336 .channels_max = 2, 337 .rates = SNDRV_PCM_RATE_32000 | \ 338 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 339 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, 340 }, 341 /* alsa ops */ 342 .ops = &stac9766_dai_ops_digital, 343 } 344 }; 345 EXPORT_SYMBOL_GPL(stac9766_dai); 346 347 static int stac9766_codec_probe(struct platform_device *pdev) 348 { 349 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 350 struct snd_soc_codec *codec; 351 int ret = 0; 352 353 printk(KERN_INFO "STAC9766 SoC Audio Codec %s\n", STAC9766_VERSION); 354 355 socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); 356 if (socdev->card->codec == NULL) 357 return -ENOMEM; 358 codec = socdev->card->codec; 359 mutex_init(&codec->mutex); 360 361 codec->reg_cache = kmemdup(stac9766_reg, sizeof(stac9766_reg), 362 GFP_KERNEL); 363 if (codec->reg_cache == NULL) { 364 ret = -ENOMEM; 365 goto cache_err; 366 } 367 codec->reg_cache_size = sizeof(stac9766_reg); 368 codec->reg_cache_step = 2; 369 370 codec->name = "STAC9766"; 371 codec->owner = THIS_MODULE; 372 codec->dai = stac9766_dai; 373 codec->num_dai = ARRAY_SIZE(stac9766_dai); 374 codec->write = stac9766_ac97_write; 375 codec->read = stac9766_ac97_read; 376 codec->set_bias_level = stac9766_set_bias_level; 377 INIT_LIST_HEAD(&codec->dapm_widgets); 378 INIT_LIST_HEAD(&codec->dapm_paths); 379 380 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); 381 if (ret < 0) 382 goto codec_err; 383 384 /* register pcms */ 385 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 386 if (ret < 0) 387 goto pcm_err; 388 389 /* do a cold reset for the controller and then try 390 * a warm reset followed by an optional cold reset for codec */ 391 stac9766_reset(codec, 0); 392 ret = stac9766_reset(codec, 1); 393 if (ret < 0) { 394 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n"); 395 goto reset_err; 396 } 397 398 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 399 400 snd_soc_add_controls(codec, stac9766_snd_ac97_controls, 401 ARRAY_SIZE(stac9766_snd_ac97_controls)); 402 403 return 0; 404 405 reset_err: 406 snd_soc_free_pcms(socdev); 407 pcm_err: 408 snd_soc_free_ac97_codec(codec); 409 codec_err: 410 kfree(snd_soc_codec_get_drvdata(codec)); 411 cache_err: 412 kfree(socdev->card->codec); 413 socdev->card->codec = NULL; 414 return ret; 415 } 416 417 static int stac9766_codec_remove(struct platform_device *pdev) 418 { 419 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 420 struct snd_soc_codec *codec = socdev->card->codec; 421 422 if (codec == NULL) 423 return 0; 424 425 snd_soc_free_pcms(socdev); 426 snd_soc_free_ac97_codec(codec); 427 kfree(codec->reg_cache); 428 kfree(codec); 429 return 0; 430 } 431 432 struct snd_soc_codec_device soc_codec_dev_stac9766 = { 433 .probe = stac9766_codec_probe, 434 .remove = stac9766_codec_remove, 435 .suspend = stac9766_codec_suspend, 436 .resume = stac9766_codec_resume, 437 }; 438 EXPORT_SYMBOL_GPL(soc_codec_dev_stac9766); 439 440 MODULE_DESCRIPTION("ASoC stac9766 driver"); 441 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); 442 MODULE_LICENSE("GPL"); 443