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 /* 32 * STAC9766 register cache 33 */ 34 static const u16 stac9766_reg[] = { 35 0x6A90, 0x8000, 0x8000, 0x8000, /* 6 */ 36 0x0000, 0x0000, 0x8008, 0x8008, /* e */ 37 0x8808, 0x8808, 0x8808, 0x8808, /* 16 */ 38 0x8808, 0x0000, 0x8000, 0x0000, /* 1e */ 39 0x0000, 0x0000, 0x0000, 0x000f, /* 26 */ 40 0x0a05, 0x0400, 0xbb80, 0x0000, /* 2e */ 41 0x0000, 0xbb80, 0x0000, 0x0000, /* 36 */ 42 0x0000, 0x2000, 0x0000, 0x0100, /* 3e */ 43 0x0000, 0x0000, 0x0080, 0x0000, /* 46 */ 44 0x0000, 0x0000, 0x0003, 0xffff, /* 4e */ 45 0x0000, 0x0000, 0x0000, 0x0000, /* 56 */ 46 0x4000, 0x0000, 0x0000, 0x0000, /* 5e */ 47 0x1201, 0xFFFF, 0xFFFF, 0x0000, /* 66 */ 48 0x0000, 0x0000, 0x0000, 0x0000, /* 6e */ 49 0x0000, 0x0000, 0x0000, 0x0006, /* 76 */ 50 0x0000, 0x0000, 0x0000, 0x0000, /* 7e */ 51 }; 52 53 static const char *stac9766_record_mux[] = {"Mic", "CD", "Video", "AUX", 54 "Line", "Stereo Mix", "Mono Mix", "Phone"}; 55 static const char *stac9766_mono_mux[] = {"Mix", "Mic"}; 56 static const char *stac9766_mic_mux[] = {"Mic1", "Mic2"}; 57 static const char *stac9766_SPDIF_mux[] = {"PCM", "ADC Record"}; 58 static const char *stac9766_popbypass_mux[] = {"Normal", "Bypass Mixer"}; 59 static const char *stac9766_record_all_mux[] = {"All analog", 60 "Analog plus DAC"}; 61 static const char *stac9766_boost1[] = {"0dB", "10dB"}; 62 static const char *stac9766_boost2[] = {"0dB", "20dB"}; 63 static const char *stac9766_stereo_mic[] = {"Off", "On"}; 64 65 static SOC_ENUM_DOUBLE_DECL(stac9766_record_enum, 66 AC97_REC_SEL, 8, 0, stac9766_record_mux); 67 static SOC_ENUM_SINGLE_DECL(stac9766_mono_enum, 68 AC97_GENERAL_PURPOSE, 9, stac9766_mono_mux); 69 static SOC_ENUM_SINGLE_DECL(stac9766_mic_enum, 70 AC97_GENERAL_PURPOSE, 8, stac9766_mic_mux); 71 static SOC_ENUM_SINGLE_DECL(stac9766_SPDIF_enum, 72 AC97_STAC_DA_CONTROL, 1, stac9766_SPDIF_mux); 73 static SOC_ENUM_SINGLE_DECL(stac9766_popbypass_enum, 74 AC97_GENERAL_PURPOSE, 15, stac9766_popbypass_mux); 75 static SOC_ENUM_SINGLE_DECL(stac9766_record_all_enum, 76 AC97_STAC_ANALOG_SPECIAL, 12, 77 stac9766_record_all_mux); 78 static SOC_ENUM_SINGLE_DECL(stac9766_boost1_enum, 79 AC97_MIC, 6, stac9766_boost1); /* 0/10dB */ 80 static SOC_ENUM_SINGLE_DECL(stac9766_boost2_enum, 81 AC97_STAC_ANALOG_SPECIAL, 2, stac9766_boost2); /* 0/20dB */ 82 static SOC_ENUM_SINGLE_DECL(stac9766_stereo_mic_enum, 83 AC97_STAC_STEREO_MIC, 2, stac9766_stereo_mic); 84 85 static const DECLARE_TLV_DB_LINEAR(master_tlv, -4600, 0); 86 static const DECLARE_TLV_DB_LINEAR(record_tlv, 0, 2250); 87 static const DECLARE_TLV_DB_LINEAR(beep_tlv, -4500, 0); 88 static const DECLARE_TLV_DB_LINEAR(mix_tlv, -3450, 1200); 89 90 static const struct snd_kcontrol_new stac9766_snd_ac97_controls[] = { 91 SOC_DOUBLE_TLV("Speaker Volume", AC97_MASTER, 8, 0, 31, 1, master_tlv), 92 SOC_SINGLE("Speaker Switch", AC97_MASTER, 15, 1, 1), 93 SOC_DOUBLE_TLV("Headphone Volume", AC97_HEADPHONE, 8, 0, 31, 1, 94 master_tlv), 95 SOC_SINGLE("Headphone Switch", AC97_HEADPHONE, 15, 1, 1), 96 SOC_SINGLE_TLV("Mono Out Volume", AC97_MASTER_MONO, 0, 31, 1, 97 master_tlv), 98 SOC_SINGLE("Mono Out Switch", AC97_MASTER_MONO, 15, 1, 1), 99 100 SOC_DOUBLE_TLV("Record Volume", AC97_REC_GAIN, 8, 0, 15, 0, record_tlv), 101 SOC_SINGLE("Record Switch", AC97_REC_GAIN, 15, 1, 1), 102 103 104 SOC_SINGLE_TLV("Beep Volume", AC97_PC_BEEP, 1, 15, 1, beep_tlv), 105 SOC_SINGLE("Beep Switch", AC97_PC_BEEP, 15, 1, 1), 106 SOC_SINGLE("Beep Frequency", AC97_PC_BEEP, 5, 127, 1), 107 SOC_SINGLE_TLV("Phone Volume", AC97_PHONE, 0, 31, 1, mix_tlv), 108 SOC_SINGLE("Phone Switch", AC97_PHONE, 15, 1, 1), 109 110 SOC_ENUM("Mic Boost1", stac9766_boost1_enum), 111 SOC_ENUM("Mic Boost2", stac9766_boost2_enum), 112 SOC_SINGLE_TLV("Mic Volume", AC97_MIC, 0, 31, 1, mix_tlv), 113 SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1), 114 SOC_ENUM("Stereo Mic", stac9766_stereo_mic_enum), 115 116 SOC_DOUBLE_TLV("Line Volume", AC97_LINE, 8, 0, 31, 1, mix_tlv), 117 SOC_SINGLE("Line Switch", AC97_LINE, 15, 1, 1), 118 SOC_DOUBLE_TLV("CD Volume", AC97_CD, 8, 0, 31, 1, mix_tlv), 119 SOC_SINGLE("CD Switch", AC97_CD, 15, 1, 1), 120 SOC_DOUBLE_TLV("AUX Volume", AC97_AUX, 8, 0, 31, 1, mix_tlv), 121 SOC_SINGLE("AUX Switch", AC97_AUX, 15, 1, 1), 122 SOC_DOUBLE_TLV("Video Volume", AC97_VIDEO, 8, 0, 31, 1, mix_tlv), 123 SOC_SINGLE("Video Switch", AC97_VIDEO, 15, 1, 1), 124 125 SOC_DOUBLE_TLV("DAC Volume", AC97_PCM, 8, 0, 31, 1, mix_tlv), 126 SOC_SINGLE("DAC Switch", AC97_PCM, 15, 1, 1), 127 SOC_SINGLE("Loopback Test Switch", AC97_GENERAL_PURPOSE, 7, 1, 0), 128 SOC_SINGLE("3D Volume", AC97_3D_CONTROL, 3, 2, 1), 129 SOC_SINGLE("3D Switch", AC97_GENERAL_PURPOSE, 13, 1, 0), 130 131 SOC_ENUM("SPDIF Mux", stac9766_SPDIF_enum), 132 SOC_ENUM("Mic1/2 Mux", stac9766_mic_enum), 133 SOC_ENUM("Record All Mux", stac9766_record_all_enum), 134 SOC_ENUM("Record Mux", stac9766_record_enum), 135 SOC_ENUM("Mono Mux", stac9766_mono_enum), 136 SOC_ENUM("Pop Bypass Mux", stac9766_popbypass_enum), 137 }; 138 139 static int stac9766_ac97_write(struct snd_soc_codec *codec, unsigned int reg, 140 unsigned int val) 141 { 142 u16 *cache = codec->reg_cache; 143 144 if (reg > AC97_STAC_PAGE0) { 145 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 146 soc_ac97_ops->write(codec->ac97, reg, val); 147 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 148 return 0; 149 } 150 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 151 return -EIO; 152 153 soc_ac97_ops->write(codec->ac97, reg, val); 154 cache[reg / 2] = val; 155 return 0; 156 } 157 158 static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec, 159 unsigned int reg) 160 { 161 u16 val = 0, *cache = codec->reg_cache; 162 163 if (reg > AC97_STAC_PAGE0) { 164 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 165 val = soc_ac97_ops->read(codec->ac97, reg - AC97_STAC_PAGE0); 166 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 167 return val; 168 } 169 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 170 return -EIO; 171 172 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS || 173 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 || 174 reg == AC97_VENDOR_ID2) { 175 176 val = soc_ac97_ops->read(codec->ac97, reg); 177 return val; 178 } 179 return cache[reg / 2]; 180 } 181 182 static int ac97_analog_prepare(struct snd_pcm_substream *substream, 183 struct snd_soc_dai *dai) 184 { 185 struct snd_soc_codec *codec = dai->codec; 186 struct snd_pcm_runtime *runtime = substream->runtime; 187 unsigned short reg, vra; 188 189 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 190 191 vra |= 0x1; /* enable variable rate audio */ 192 vra &= ~0x4; /* disable SPDIF output */ 193 194 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 195 196 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 197 reg = AC97_PCM_FRONT_DAC_RATE; 198 else 199 reg = AC97_PCM_LR_ADC_RATE; 200 201 return stac9766_ac97_write(codec, reg, runtime->rate); 202 } 203 204 static int ac97_digital_prepare(struct snd_pcm_substream *substream, 205 struct snd_soc_dai *dai) 206 { 207 struct snd_soc_codec *codec = dai->codec; 208 struct snd_pcm_runtime *runtime = substream->runtime; 209 unsigned short reg, vra; 210 211 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002); 212 213 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 214 vra |= 0x5; /* Enable VRA and SPDIF out */ 215 216 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 217 218 reg = AC97_PCM_FRONT_DAC_RATE; 219 220 return stac9766_ac97_write(codec, reg, runtime->rate); 221 } 222 223 static int stac9766_set_bias_level(struct snd_soc_codec *codec, 224 enum snd_soc_bias_level level) 225 { 226 switch (level) { 227 case SND_SOC_BIAS_ON: /* full On */ 228 case SND_SOC_BIAS_PREPARE: /* partial On */ 229 case SND_SOC_BIAS_STANDBY: /* Off, with power */ 230 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000); 231 break; 232 case SND_SOC_BIAS_OFF: /* Off, without power */ 233 /* disable everything including AC link */ 234 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff); 235 break; 236 } 237 codec->dapm.bias_level = level; 238 return 0; 239 } 240 241 static int stac9766_reset(struct snd_soc_codec *codec, int try_warm) 242 { 243 if (try_warm && soc_ac97_ops->warm_reset) { 244 soc_ac97_ops->warm_reset(codec->ac97); 245 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0]) 246 return 1; 247 } 248 249 soc_ac97_ops->reset(codec->ac97); 250 if (soc_ac97_ops->warm_reset) 251 soc_ac97_ops->warm_reset(codec->ac97); 252 if (stac9766_ac97_read(codec, 0) != stac9766_reg[0]) 253 return -EIO; 254 return 0; 255 } 256 257 static int stac9766_codec_suspend(struct snd_soc_codec *codec) 258 { 259 stac9766_set_bias_level(codec, SND_SOC_BIAS_OFF); 260 return 0; 261 } 262 263 static int stac9766_codec_resume(struct snd_soc_codec *codec) 264 { 265 u16 id, reset; 266 267 reset = 0; 268 /* give the codec an AC97 warm reset to start the link */ 269 reset: 270 if (reset > 5) { 271 printk(KERN_ERR "stac9766 failed to resume"); 272 return -EIO; 273 } 274 codec->ac97->bus->ops->warm_reset(codec->ac97); 275 id = soc_ac97_ops->read(codec->ac97, AC97_VENDOR_ID2); 276 if (id != 0x4c13) { 277 stac9766_reset(codec, 0); 278 reset++; 279 goto reset; 280 } 281 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 282 283 return 0; 284 } 285 286 static const struct snd_soc_dai_ops stac9766_dai_ops_analog = { 287 .prepare = ac97_analog_prepare, 288 }; 289 290 static const struct snd_soc_dai_ops stac9766_dai_ops_digital = { 291 .prepare = ac97_digital_prepare, 292 }; 293 294 static struct snd_soc_dai_driver stac9766_dai[] = { 295 { 296 .name = "stac9766-hifi-analog", 297 .ac97_control = 1, 298 299 /* stream cababilities */ 300 .playback = { 301 .stream_name = "stac9766 analog", 302 .channels_min = 1, 303 .channels_max = 2, 304 .rates = SNDRV_PCM_RATE_8000_48000, 305 .formats = SND_SOC_STD_AC97_FMTS, 306 }, 307 .capture = { 308 .stream_name = "stac9766 analog", 309 .channels_min = 1, 310 .channels_max = 2, 311 .rates = SNDRV_PCM_RATE_8000_48000, 312 .formats = SND_SOC_STD_AC97_FMTS, 313 }, 314 /* alsa ops */ 315 .ops = &stac9766_dai_ops_analog, 316 }, 317 { 318 .name = "stac9766-hifi-IEC958", 319 .ac97_control = 1, 320 321 /* stream cababilities */ 322 .playback = { 323 .stream_name = "stac9766 IEC958", 324 .channels_min = 1, 325 .channels_max = 2, 326 .rates = SNDRV_PCM_RATE_32000 | \ 327 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 328 .formats = SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE, 329 }, 330 /* alsa ops */ 331 .ops = &stac9766_dai_ops_digital, 332 } 333 }; 334 335 static int stac9766_codec_probe(struct snd_soc_codec *codec) 336 { 337 int ret = 0; 338 339 ret = snd_soc_new_ac97_codec(codec, soc_ac97_ops, 0); 340 if (ret < 0) 341 goto codec_err; 342 343 /* do a cold reset for the controller and then try 344 * a warm reset followed by an optional cold reset for codec */ 345 stac9766_reset(codec, 0); 346 ret = stac9766_reset(codec, 1); 347 if (ret < 0) { 348 printk(KERN_ERR "Failed to reset STAC9766: AC97 link error\n"); 349 goto codec_err; 350 } 351 352 stac9766_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 353 354 snd_soc_add_codec_controls(codec, stac9766_snd_ac97_controls, 355 ARRAY_SIZE(stac9766_snd_ac97_controls)); 356 357 return 0; 358 359 codec_err: 360 snd_soc_free_ac97_codec(codec); 361 return ret; 362 } 363 364 static int stac9766_codec_remove(struct snd_soc_codec *codec) 365 { 366 snd_soc_free_ac97_codec(codec); 367 return 0; 368 } 369 370 static struct snd_soc_codec_driver soc_codec_dev_stac9766 = { 371 .write = stac9766_ac97_write, 372 .read = stac9766_ac97_read, 373 .set_bias_level = stac9766_set_bias_level, 374 .probe = stac9766_codec_probe, 375 .remove = stac9766_codec_remove, 376 .suspend = stac9766_codec_suspend, 377 .resume = stac9766_codec_resume, 378 .reg_cache_size = ARRAY_SIZE(stac9766_reg), 379 .reg_word_size = sizeof(u16), 380 .reg_cache_step = 2, 381 .reg_cache_default = stac9766_reg, 382 }; 383 384 static int stac9766_probe(struct platform_device *pdev) 385 { 386 return snd_soc_register_codec(&pdev->dev, 387 &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai)); 388 } 389 390 static int stac9766_remove(struct platform_device *pdev) 391 { 392 snd_soc_unregister_codec(&pdev->dev); 393 return 0; 394 } 395 396 static struct platform_driver stac9766_codec_driver = { 397 .driver = { 398 .name = "stac9766-codec", 399 .owner = THIS_MODULE, 400 }, 401 402 .probe = stac9766_probe, 403 .remove = stac9766_remove, 404 }; 405 406 module_platform_driver(stac9766_codec_driver); 407 408 MODULE_DESCRIPTION("ASoC stac9766 driver"); 409 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); 410 MODULE_LICENSE("GPL"); 411