1 /* 2 * wm9705.c -- ALSA Soc WM9705 codec support 3 * 4 * Copyright 2008 Ian Molton <spyro@f2s.com> 5 * 6 * This program is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License as published by the 8 * Free Software Foundation; Version 2 of the License only. 9 * 10 */ 11 12 #include <linux/init.h> 13 #include <linux/slab.h> 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/device.h> 17 #include <sound/core.h> 18 #include <sound/pcm.h> 19 #include <sound/ac97_codec.h> 20 #include <sound/initval.h> 21 #include <sound/soc.h> 22 #include <sound/soc-dapm.h> 23 24 #include "wm9705.h" 25 26 /* 27 * WM9705 register cache 28 */ 29 static const u16 wm9705_reg[] = { 30 0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */ 31 0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */ 32 0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */ 33 0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */ 34 0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */ 35 0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */ 36 0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */ 37 0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */ 38 0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */ 39 0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */ 40 0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */ 41 0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */ 42 0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */ 43 0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */ 44 0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */ 45 0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */ 46 }; 47 48 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = { 49 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1), 50 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1), 51 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1), 52 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1), 53 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1), 54 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1), 55 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1), 56 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1), 57 SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1), 58 SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1), 59 SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1), 60 SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1), 61 SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1), 62 SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0), 63 SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0), 64 SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1), 65 }; 66 67 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"}; 68 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC", 69 "Line", "Stereo Mix", "Mono Mix", "Phone"}; 70 71 static const struct soc_enum wm9705_enum_mic = 72 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic); 73 static const struct soc_enum wm9705_enum_rec_l = 74 SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel); 75 static const struct soc_enum wm9705_enum_rec_r = 76 SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel); 77 78 /* Headphone Mixer */ 79 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = { 80 SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1), 81 SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1), 82 SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1), 83 SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1), 84 SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1), 85 }; 86 87 /* Mic source */ 88 static const struct snd_kcontrol_new wm9705_mic_src_controls = 89 SOC_DAPM_ENUM("Route", wm9705_enum_mic); 90 91 /* Capture source */ 92 static const struct snd_kcontrol_new wm9705_capture_selectl_controls = 93 SOC_DAPM_ENUM("Route", wm9705_enum_rec_l); 94 static const struct snd_kcontrol_new wm9705_capture_selectr_controls = 95 SOC_DAPM_ENUM("Route", wm9705_enum_rec_r); 96 97 /* DAPM widgets */ 98 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = { 99 SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0, 100 &wm9705_mic_src_controls), 101 SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0, 102 &wm9705_capture_selectl_controls), 103 SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0, 104 &wm9705_capture_selectr_controls), 105 SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", 106 SND_SOC_NOPM, 0, 0), 107 SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", 108 SND_SOC_NOPM, 0, 0), 109 SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0, 110 &wm9705_hp_mixer_controls[0], 111 ARRAY_SIZE(wm9705_hp_mixer_controls)), 112 SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), 113 SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0), 114 SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0), 115 SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 116 SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 117 SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 118 SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 119 SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 120 SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 121 SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 122 SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 123 SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 124 SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 125 SND_SOC_DAPM_OUTPUT("HPOUTL"), 126 SND_SOC_DAPM_OUTPUT("HPOUTR"), 127 SND_SOC_DAPM_OUTPUT("LOUT"), 128 SND_SOC_DAPM_OUTPUT("ROUT"), 129 SND_SOC_DAPM_OUTPUT("MONOOUT"), 130 SND_SOC_DAPM_INPUT("PHONE"), 131 SND_SOC_DAPM_INPUT("LINEINL"), 132 SND_SOC_DAPM_INPUT("LINEINR"), 133 SND_SOC_DAPM_INPUT("CDINL"), 134 SND_SOC_DAPM_INPUT("CDINR"), 135 SND_SOC_DAPM_INPUT("PCBEEP"), 136 SND_SOC_DAPM_INPUT("MIC1"), 137 SND_SOC_DAPM_INPUT("MIC2"), 138 }; 139 140 /* Audio map 141 * WM9705 has no switches to disable the route from the inputs to the HP mixer 142 * so in order to prevent active inputs from forcing the audio outputs to be 143 * constantly enabled, we use the mutes on those inputs to simulate such 144 * controls. 145 */ 146 static const struct snd_soc_dapm_route audio_map[] = { 147 /* HP mixer */ 148 {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"}, 149 {"HP Mixer", "CD Playback Switch", "CD PGA"}, 150 {"HP Mixer", "Mic Playback Switch", "Mic PGA"}, 151 {"HP Mixer", "Phone Playback Switch", "Phone PGA"}, 152 {"HP Mixer", "Line Playback Switch", "Line PGA"}, 153 {"HP Mixer", NULL, "Left DAC"}, 154 {"HP Mixer", NULL, "Right DAC"}, 155 156 /* mono mixer */ 157 {"Mono Mixer", NULL, "HP Mixer"}, 158 159 /* outputs */ 160 {"Headphone PGA", NULL, "HP Mixer"}, 161 {"HPOUTL", NULL, "Headphone PGA"}, 162 {"HPOUTR", NULL, "Headphone PGA"}, 163 {"Line out PGA", NULL, "HP Mixer"}, 164 {"LOUT", NULL, "Line out PGA"}, 165 {"ROUT", NULL, "Line out PGA"}, 166 {"Mono PGA", NULL, "Mono Mixer"}, 167 {"MONOOUT", NULL, "Mono PGA"}, 168 169 /* inputs */ 170 {"CD PGA", NULL, "CDINL"}, 171 {"CD PGA", NULL, "CDINR"}, 172 {"Line PGA", NULL, "LINEINL"}, 173 {"Line PGA", NULL, "LINEINR"}, 174 {"Phone PGA", NULL, "PHONE"}, 175 {"Mic Source", "Mic 1", "MIC1"}, 176 {"Mic Source", "Mic 2", "MIC2"}, 177 {"Mic PGA", NULL, "Mic Source"}, 178 {"PCBEEP PGA", NULL, "PCBEEP"}, 179 180 /* Left capture selector */ 181 {"Left Capture Source", "Mic", "Mic Source"}, 182 {"Left Capture Source", "CD", "CDINL"}, 183 {"Left Capture Source", "Line", "LINEINL"}, 184 {"Left Capture Source", "Stereo Mix", "HP Mixer"}, 185 {"Left Capture Source", "Mono Mix", "HP Mixer"}, 186 {"Left Capture Source", "Phone", "PHONE"}, 187 188 /* Right capture source */ 189 {"Right Capture Source", "Mic", "Mic Source"}, 190 {"Right Capture Source", "CD", "CDINR"}, 191 {"Right Capture Source", "Line", "LINEINR"}, 192 {"Right Capture Source", "Stereo Mix", "HP Mixer"}, 193 {"Right Capture Source", "Mono Mix", "HP Mixer"}, 194 {"Right Capture Source", "Phone", "PHONE"}, 195 196 {"ADC PGA", NULL, "Left Capture Source"}, 197 {"ADC PGA", NULL, "Right Capture Source"}, 198 199 /* ADC's */ 200 {"Left ADC", NULL, "ADC PGA"}, 201 {"Right ADC", NULL, "ADC PGA"}, 202 }; 203 204 static int wm9705_add_widgets(struct snd_soc_codec *codec) 205 { 206 snd_soc_dapm_new_controls(codec, wm9705_dapm_widgets, 207 ARRAY_SIZE(wm9705_dapm_widgets)); 208 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map)); 209 210 return 0; 211 } 212 213 /* We use a register cache to enhance read performance. */ 214 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg) 215 { 216 u16 *cache = codec->reg_cache; 217 218 switch (reg) { 219 case AC97_RESET: 220 case AC97_VENDOR_ID1: 221 case AC97_VENDOR_ID2: 222 return soc_ac97_ops.read(codec->ac97, reg); 223 default: 224 reg = reg >> 1; 225 226 if (reg >= (ARRAY_SIZE(wm9705_reg))) 227 return -EIO; 228 229 return cache[reg]; 230 } 231 } 232 233 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 234 unsigned int val) 235 { 236 u16 *cache = codec->reg_cache; 237 238 soc_ac97_ops.write(codec->ac97, reg, val); 239 reg = reg >> 1; 240 if (reg < (ARRAY_SIZE(wm9705_reg))) 241 cache[reg] = val; 242 243 return 0; 244 } 245 246 static int ac97_prepare(struct snd_pcm_substream *substream, 247 struct snd_soc_dai *dai) 248 { 249 struct snd_pcm_runtime *runtime = substream->runtime; 250 struct snd_soc_pcm_runtime *rtd = substream->private_data; 251 struct snd_soc_device *socdev = rtd->socdev; 252 struct snd_soc_codec *codec = socdev->card->codec; 253 int reg; 254 u16 vra; 255 256 vra = ac97_read(codec, AC97_EXTENDED_STATUS); 257 ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1); 258 259 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 260 reg = AC97_PCM_FRONT_DAC_RATE; 261 else 262 reg = AC97_PCM_LR_ADC_RATE; 263 264 return ac97_write(codec, reg, runtime->rate); 265 } 266 267 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \ 268 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ 269 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ 270 SNDRV_PCM_RATE_48000) 271 272 static struct snd_soc_dai_ops wm9705_dai_ops = { 273 .prepare = ac97_prepare, 274 }; 275 276 struct snd_soc_dai wm9705_dai[] = { 277 { 278 .name = "AC97 HiFi", 279 .ac97_control = 1, 280 .playback = { 281 .stream_name = "HiFi Playback", 282 .channels_min = 1, 283 .channels_max = 2, 284 .rates = WM9705_AC97_RATES, 285 .formats = SND_SOC_STD_AC97_FMTS, 286 }, 287 .capture = { 288 .stream_name = "HiFi Capture", 289 .channels_min = 1, 290 .channels_max = 2, 291 .rates = WM9705_AC97_RATES, 292 .formats = SND_SOC_STD_AC97_FMTS, 293 }, 294 .ops = &wm9705_dai_ops, 295 }, 296 { 297 .name = "AC97 Aux", 298 .playback = { 299 .stream_name = "Aux Playback", 300 .channels_min = 1, 301 .channels_max = 1, 302 .rates = WM9705_AC97_RATES, 303 .formats = SNDRV_PCM_FMTBIT_S16_LE, 304 }, 305 } 306 }; 307 EXPORT_SYMBOL_GPL(wm9705_dai); 308 309 static int wm9705_reset(struct snd_soc_codec *codec) 310 { 311 if (soc_ac97_ops.reset) { 312 soc_ac97_ops.reset(codec->ac97); 313 if (ac97_read(codec, 0) == wm9705_reg[0]) 314 return 0; /* Success */ 315 } 316 317 return -EIO; 318 } 319 320 #ifdef CONFIG_PM 321 static int wm9705_soc_suspend(struct platform_device *pdev, pm_message_t msg) 322 { 323 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 324 struct snd_soc_codec *codec = socdev->card->codec; 325 326 soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff); 327 328 return 0; 329 } 330 331 static int wm9705_soc_resume(struct platform_device *pdev) 332 { 333 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 334 struct snd_soc_codec *codec = socdev->card->codec; 335 int i, ret; 336 u16 *cache = codec->reg_cache; 337 338 ret = wm9705_reset(codec); 339 if (ret < 0) { 340 printk(KERN_ERR "could not reset AC97 codec\n"); 341 return ret; 342 } 343 344 for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) { 345 soc_ac97_ops.write(codec->ac97, i, cache[i>>1]); 346 } 347 348 return 0; 349 } 350 #else 351 #define wm9705_soc_suspend NULL 352 #define wm9705_soc_resume NULL 353 #endif 354 355 static int wm9705_soc_probe(struct platform_device *pdev) 356 { 357 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 358 struct snd_soc_codec *codec; 359 int ret = 0; 360 361 printk(KERN_INFO "WM9705 SoC Audio Codec\n"); 362 363 socdev->card->codec = kzalloc(sizeof(struct snd_soc_codec), 364 GFP_KERNEL); 365 if (socdev->card->codec == NULL) 366 return -ENOMEM; 367 codec = socdev->card->codec; 368 mutex_init(&codec->mutex); 369 370 codec->reg_cache = kmemdup(wm9705_reg, sizeof(wm9705_reg), GFP_KERNEL); 371 if (codec->reg_cache == NULL) { 372 ret = -ENOMEM; 373 goto cache_err; 374 } 375 codec->reg_cache_size = sizeof(wm9705_reg); 376 codec->reg_cache_step = 2; 377 378 codec->name = "WM9705"; 379 codec->owner = THIS_MODULE; 380 codec->dai = wm9705_dai; 381 codec->num_dai = ARRAY_SIZE(wm9705_dai); 382 codec->write = ac97_write; 383 codec->read = ac97_read; 384 INIT_LIST_HEAD(&codec->dapm_widgets); 385 INIT_LIST_HEAD(&codec->dapm_paths); 386 387 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); 388 if (ret < 0) { 389 printk(KERN_ERR "wm9705: failed to register AC97 codec\n"); 390 goto codec_err; 391 } 392 393 /* register pcms */ 394 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); 395 if (ret < 0) 396 goto pcm_err; 397 398 ret = wm9705_reset(codec); 399 if (ret) 400 goto reset_err; 401 402 snd_soc_add_controls(codec, wm9705_snd_ac97_controls, 403 ARRAY_SIZE(wm9705_snd_ac97_controls)); 404 wm9705_add_widgets(codec); 405 406 return 0; 407 408 reset_err: 409 snd_soc_free_pcms(socdev); 410 pcm_err: 411 snd_soc_free_ac97_codec(codec); 412 codec_err: 413 kfree(codec->reg_cache); 414 cache_err: 415 kfree(socdev->card->codec); 416 socdev->card->codec = NULL; 417 return ret; 418 } 419 420 static int wm9705_soc_remove(struct platform_device *pdev) 421 { 422 struct snd_soc_device *socdev = platform_get_drvdata(pdev); 423 struct snd_soc_codec *codec = socdev->card->codec; 424 425 if (codec == NULL) 426 return 0; 427 428 snd_soc_dapm_free(socdev); 429 snd_soc_free_pcms(socdev); 430 snd_soc_free_ac97_codec(codec); 431 kfree(codec->reg_cache); 432 kfree(codec); 433 return 0; 434 } 435 436 struct snd_soc_codec_device soc_codec_dev_wm9705 = { 437 .probe = wm9705_soc_probe, 438 .remove = wm9705_soc_remove, 439 .suspend = wm9705_soc_suspend, 440 .resume = wm9705_soc_resume, 441 }; 442 EXPORT_SYMBOL_GPL(soc_codec_dev_wm9705); 443 444 MODULE_DESCRIPTION("ASoC WM9705 driver"); 445 MODULE_AUTHOR("Ian Molton"); 446 MODULE_LICENSE("GPL v2"); 447