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_VERSION "0.10" 32 33 /* 34 * STAC9766 register cache 35 */ 36 static const u16 stac9766_reg[] = { 37 0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */ 38 0x0000, 0x0000, 0x8008, 0x8008, /* e */ 39 0x8808, 0x8808, 0x8808, 0x8808, /* 16 */ 40 0x8808, 0x0000, 0x8000, 0x0000, /* 1e */ 41 0x0000, 0x0000, 0x0000, 0x000f, /* 26 */ 42 0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */ 43 0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */ 44 0x0000, 0x2000, 0x0000, 0x0100, /* 3e */ 45 0x0000, 0x0000, 0x0080, 0x0000, /* 46 */ 46 0x0000, 0x0000, 0x0003, 0xffff, /* 4e */ 47 0x0000, 0x0000, 0x0000, 0x0000, /* 56 */ 48 0x4000, 0x0000, 0x0000, 0x0000, /* 5e */ 49 0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */ 50 0x0000, 0x0000, 0x0000, 0x0000, /* 6e */ 51 0x0000, 0x0000, 0x0000, 0x0006, /* 76 */ 52 0x0000, 0x0000, 0x0000, 0x0000, /* 7e */ 53 }; 54 55 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX", 56 "Line", "Stereo Mix", "Mono Mix", "Phone"}; 57 static const char *stac9766_mono_mux[] = {"Mix", "Mic"}; 58 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"}; 59 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"}; 60 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"}; 61 static const char *stac9766_record_all_mux[] = {"All analog", 62 "Analog plus DAC"}; 63 static const char *stac9766_boost1[] = {"0dB", "10dB"}; 64 static const char *stac9766_boost2[] = {"0dB", "20dB"}; 65 static const char *stac9766_stereo_mic[] = {"Off", "On"}; 66 67 static const struct soc_enum stac9766_record_enum = 68 SOC_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, stac9766_record_mux); 69 static const struct soc_enum stac9766_mono_enum = 70 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 9, 2, stac9766_mono_mux); 71 static const struct soc_enum stac9766_mic_enum = 72 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, stac9766_mic_mux); 73 static const struct soc_enum stac9766_SPDIF_enum = 74 SOC_ENUM_SINGLE(AC97_STAC_DA_CONTROL, 1, 2, stac9766_SPDIF_mux); 75 static const struct soc_enum stac9766_popbypass_enum = 76 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 15, 2, stac9766_popbypass_mux); 77 static const struct soc_enum stac9766_record_all_enum = 78 SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 12, 2, 79 stac9766_record_all_mux); 80 static const struct soc_enum stac9766_boost1_enum = 81 SOC_ENUM_SINGLE(AC97_MIC, 6, 2, stac9766_boost1); /* 0/10dB */ 82 static const struct soc_enum stac9766_boost2_enum = 83 SOC_ENUM_SINGLE(AC97_STAC_ANALOG_SPECIAL, 2, 2, stac9766_boost2); /* 0/20dB */ 84 static const struct soc_enum stac9766_stereo_mic_enum = 85 SOC_ENUM_SINGLE(AC97_STAC_STEREO_MIC, 2, 1, stac9766_stereo_mic); 86 87 static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0); 88 static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250); 89 static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0); 90 static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200); 91 92 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = { 93 SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv), 94 SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1), 95 SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1, 96 master_tlv), 97 SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1), 98 SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1, 99 master_tlv), 100 SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1), 101 102 SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv), 103 SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1), 104 105 106 SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv), 107 SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1), 108 SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1), 109 SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv), 110 SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1), 111 112 SOC_ENUM("Mic Boost1", stac9766_boost1_enum), 113 SOC_ENUM("Mic Boost2", stac9766_boost2_enum), 114 SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv), 115 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1), 116 SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum), 117 118 SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv), 119 SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1), 120 SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv), 121 SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1), 122 SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv), 123 SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1), 124 SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv), 125 SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1), 126 127 SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv), 128 SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1), 129 SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0), 130 SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1), 131 SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0), 132 133 SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum), 134 SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum), 135 SOC_ENUM("Record All Mux", stac9766_record_all_enum), 136 SOC_ENUM("Record Mux", stac9766_record_enum), 137 SOC_ENUM("Mono Mux", stac9766_mono_enum), 138 SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum), 139 }; 140 141 static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg, 142 unsigned int val) 143 { 144 u16 *cache = codec->reg_cache; 145 146 if (reg > AC97_STAC_PAGE0) { 147 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 148 soc_ac97_ops.write(codec->ac97, reg, val); 149 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 150 return 0; 151 } 152 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 153 return -EIO; 154 155 soc_ac97_ops.write(codec->ac97, reg, val); 156 cache[reg / 2] = val; 157 return 0; 158 } 159 160 static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec, 161 unsigned int reg) 162 { 163 u16 val = 0, *cache = codec->reg_cache; 164 165 if (reg > AC97_STAC_PAGE0) { 166 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 167 val = soc_ac97_ops.read(codec->ac97, reg - AC97_STAC_PAGE0); 168 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 169 return val; 170 } 171 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 172 return -EIO; 173 174 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS || 175 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 || 176 reg == AC97_VENDOR_ID2) { 177 178 val = soc_ac97_ops.read(codec->ac97, reg); 179 return val; 180 } 181 return cache[reg / 2]; 182 } 183 184 static int ac97_analog_prepare(struct snd_pcm_substream *substream, 185 struct snd_soc_dai *dai) 186 { 187 struct snd_soc_codec *codec = dai->codec; 188 struct snd_pcm_runtime *runtime = substream->runtime; 189 unsigned short reg, vra; 190 191 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 192 193 vra |= 0x1; /* enable variable rate audio */ 194 vra &= ~0x4; /* disable SPDIF output */ 195 196 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 197 198 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 199 reg = AC97_PCM_FRONT_DAC_RATE; 200 else 201 reg = AC97_PCM_LR_ADC_RATE; 202 203 return stac9766_ac97_write(codec, reg, runtime->rate); 204 } 205 206 static int ac97_digital_prepare(struct snd_pcm_substream *substream, 207 struct snd_soc_dai *dai) 208 { 209 struct snd_soc_codec *codec = dai->codec; 210 struct snd_pcm_runtime *runtime = substream->runtime; 211 unsigned short reg, vra; 212 213 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002); 214 215 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 216 vra |= 0x5; /* Enable VRA and SPDIF out */ 217 218 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 219 220 reg = AC97_PCM_FRONT_DAC_RATE; 221 222 return stac9766_ac97_write(codec, reg, runtime->rate); 223 } 224 225 static int stac9766_set_bias_level(struct snd_soc_codec *codec, 226 enum snd_soc_bias_level level) 227 { 228 switch (level) { 229 case SND_SOC_BIAS_ON: /* full On */ 230 case SND_SOC_BIAS_PREPARE: /* partial On */ 231 case SND_SOC_BIAS_STANDBY: /* Off, with power */ 232 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000); 233 break; 234 case SND_SOC_BIAS_OFF: /* Off, without power */ 235 /* disable everything including AC link */ 236 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff); 237 break; 238 } 239 codec->dapm.bias_level = level; 240 return 0; 241 } 242 243 static int stac9766_reset(struct snd_soc_codec *codec, int try_warm) 244 { 245 if (try_warm && soc_ac97_ops.warm_reset) { 246 soc_ac97_ops.warm_reset(codec->ac97); 247 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0]) 248 return 1; 249 } 250 251 soc_ac97_ops.reset(codec->ac97); 252 if (soc_ac97_ops.warm_reset) 253 soc_ac97_ops.warm_reset(codec->ac97); 254 if (stac9766_ac97_read(codec, 0) != stac9766_reg[0]) 255 return -EIO; 256 return 0; 257 } 258 259 static int stac9766_codec_suspend(struct snd_soc_codec *codec, 260 pm_message_t state) 261 { 262 stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF); 263 return 0; 264 } 265 266 static int stac9766_codec_resume(struct snd_soc_codec *codec) 267 { 268 u16 id, reset; 269 270 reset = 0; 271 /* give the codec an AC97 warm reset to start the link */ 272 reset: 273 if (reset > 5) { 274 printk(KERN_ERR "stac9766 failed to resume"); 275 return -EIO; 276 } 277 codec->ac97->bus->ops->warm_reset(codec->ac97); 278 id = soc_ac97_ops.read(codec->ac97, AC97_VENDOR_ID2); 279 if (id != 0x4c13) { 280 stac9766_reset(codec, 0); 281 reset++; 282 goto reset; 283 } 284 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 285 286 return 0; 287 } 288 289 static struct snd_soc_dai_ops stac9766_dai_ops_analog = { 290 .prepare = ac97_analog_prepare, 291 }; 292 293 static struct snd_soc_dai_ops stac9766_dai_ops_digital = { 294 .prepare = ac97_digital_prepare, 295 }; 296 297 static struct snd_soc_dai_driver stac9766_dai[] = { 298 { 299 .name = "stac9766-hifi-analog", 300 .ac97_control = 1, 301 302 /* stream cababilities */ 303 .playback = { 304 .stream_name = "stac9766 analog", 305 .channels_min = 1, 306 .channels_max = 2, 307 .rates = SNDRV_PCM_RATE_8000_48000, 308 .formats = SND_SOC_STD_AC97_FMTS, 309 }, 310 .capture = { 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 /* alsa ops */ 318 .ops = &stac9766_dai_ops_analog, 319 }, 320 { 321 .name = "stac9766-hifi-IEC958", 322 .ac97_control = 1, 323 324 /* stream cababilities */ 325 .playback = { 326 .stream_name = "stac9766 IEC958", 327 .channels_min = 1, 328 .channels_max = 2, 329 .rates = SNDRV_PCM_RATE_32000 | \ 330 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 331 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, 332 }, 333 /* alsa ops */ 334 .ops = &stac9766_dai_ops_digital, 335 } 336 }; 337 338 static int stac9766_codec_probe(struct snd_soc_codec *codec) 339 { 340 int ret = 0; 341 342 printk(KERN_INFO "STAC9766 SoC Audio Codec %s\n", STAC9766_VERSION); 343 344 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); 345 if (ret < 0) 346 goto codec_err; 347 348 /* do a cold reset for the controller and then try 349 * a warm reset followed by an optional cold reset for codec */ 350 stac9766_reset(codec, 0); 351 ret = stac9766_reset(codec, 1); 352 if (ret < 0) { 353 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n"); 354 goto codec_err; 355 } 356 357 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 358 359 snd_soc_add_controls(codec, stac9766_snd_ac97_controls, 360 ARRAY_SIZE(stac9766_snd_ac97_controls)); 361 362 return 0; 363 364 codec_err: 365 snd_soc_free_ac97_codec(codec); 366 return ret; 367 } 368 369 static int stac9766_codec_remove(struct snd_soc_codec *codec) 370 { 371 snd_soc_free_ac97_codec(codec); 372 return 0; 373 } 374 375 static struct snd_soc_codec_driver soc_codec_dev_stac9766 = { 376 .write = stac9766_ac97_write, 377 .read = stac9766_ac97_read, 378 .set_bias_level = stac9766_set_bias_level, 379 .probe = stac9766_codec_probe, 380 .remove = stac9766_codec_remove, 381 .suspend = stac9766_codec_suspend, 382 .resume = stac9766_codec_resume, 383 .reg_cache_size = sizeof(stac9766_reg), 384 .reg_word_size = sizeof(u16), 385 .reg_cache_step = 2, 386 .reg_cache_default = stac9766_reg, 387 }; 388 389 static __devinit int stac9766_probe(struct platform_device *pdev) 390 { 391 return snd_soc_register_codec(&pdev->dev, 392 &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai)); 393 } 394 395 static int __devexit stac9766_remove(struct platform_device *pdev) 396 { 397 snd_soc_unregister_codec(&pdev->dev); 398 return 0; 399 } 400 401 static struct platform_driver stac9766_codec_driver = { 402 .driver = { 403 .name = "stac9766-codec", 404 .owner = THIS_MODULE, 405 }, 406 407 .probe = stac9766_probe, 408 .remove = __devexit_p(stac9766_remove), 409 }; 410 411 static int __init stac9766_init(void) 412 { 413 return platform_driver_register(&stac9766_codec_driver); 414 } 415 module_init(stac9766_init); 416 417 static void __exit stac9766_exit(void) 418 { 419 platform_driver_unregister(&stac9766_codec_driver); 420 } 421 module_exit(stac9766_exit); 422 423 MODULE_DESCRIPTION("ASoC stac9766 driver"); 424 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); 425 MODULE_LICENSE("GPL"); 426