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 23 #include "wm9705.h" 24 25 /* 26 * WM9705 register cache 27 */ 28 static const u16 wm9705_reg[] = { 29 0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */ 30 0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */ 31 0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */ 32 0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */ 33 0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */ 34 0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */ 35 0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */ 36 0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */ 37 0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */ 38 0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */ 39 0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */ 40 0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */ 41 0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */ 42 0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */ 43 0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */ 44 0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */ 45 }; 46 47 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = { 48 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1), 49 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1), 50 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1), 51 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1), 52 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1), 53 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1), 54 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1), 55 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1), 56 SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1), 57 SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1), 58 SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1), 59 SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1), 60 SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1), 61 SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0), 62 SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0), 63 SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1), 64 }; 65 66 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"}; 67 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC", 68 "Line", "Stereo Mix", "Mono Mix", "Phone"}; 69 70 static const struct soc_enum wm9705_enum_mic = 71 SOC_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, wm9705_mic); 72 static const struct soc_enum wm9705_enum_rec_l = 73 SOC_ENUM_SINGLE(AC97_REC_SEL, 8, 8, wm9705_rec_sel); 74 static const struct soc_enum wm9705_enum_rec_r = 75 SOC_ENUM_SINGLE(AC97_REC_SEL, 0, 8, wm9705_rec_sel); 76 77 /* Headphone Mixer */ 78 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = { 79 SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1), 80 SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1), 81 SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1), 82 SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1), 83 SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1), 84 }; 85 86 /* Mic source */ 87 static const struct snd_kcontrol_new wm9705_mic_src_controls = 88 SOC_DAPM_ENUM("Route", wm9705_enum_mic); 89 90 /* Capture source */ 91 static const struct snd_kcontrol_new wm9705_capture_selectl_controls = 92 SOC_DAPM_ENUM("Route", wm9705_enum_rec_l); 93 static const struct snd_kcontrol_new wm9705_capture_selectr_controls = 94 SOC_DAPM_ENUM("Route", wm9705_enum_rec_r); 95 96 /* DAPM widgets */ 97 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = { 98 SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0, 99 &wm9705_mic_src_controls), 100 SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0, 101 &wm9705_capture_selectl_controls), 102 SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0, 103 &wm9705_capture_selectr_controls), 104 SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", 105 SND_SOC_NOPM, 0, 0), 106 SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", 107 SND_SOC_NOPM, 0, 0), 108 SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0, 109 &wm9705_hp_mixer_controls[0], 110 ARRAY_SIZE(wm9705_hp_mixer_controls)), 111 SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), 112 SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0), 113 SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0), 114 SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 115 SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 116 SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 117 SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 118 SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 119 SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 120 SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 121 SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 122 SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 123 SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 124 SND_SOC_DAPM_OUTPUT("HPOUTL"), 125 SND_SOC_DAPM_OUTPUT("HPOUTR"), 126 SND_SOC_DAPM_OUTPUT("LOUT"), 127 SND_SOC_DAPM_OUTPUT("ROUT"), 128 SND_SOC_DAPM_OUTPUT("MONOOUT"), 129 SND_SOC_DAPM_INPUT("PHONE"), 130 SND_SOC_DAPM_INPUT("LINEINL"), 131 SND_SOC_DAPM_INPUT("LINEINR"), 132 SND_SOC_DAPM_INPUT("CDINL"), 133 SND_SOC_DAPM_INPUT("CDINR"), 134 SND_SOC_DAPM_INPUT("PCBEEP"), 135 SND_SOC_DAPM_INPUT("MIC1"), 136 SND_SOC_DAPM_INPUT("MIC2"), 137 }; 138 139 /* Audio map 140 * WM9705 has no switches to disable the route from the inputs to the HP mixer 141 * so in order to prevent active inputs from forcing the audio outputs to be 142 * constantly enabled, we use the mutes on those inputs to simulate such 143 * controls. 144 */ 145 static const struct snd_soc_dapm_route audio_map[] = { 146 /* HP mixer */ 147 {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"}, 148 {"HP Mixer", "CD Playback Switch", "CD PGA"}, 149 {"HP Mixer", "Mic Playback Switch", "Mic PGA"}, 150 {"HP Mixer", "Phone Playback Switch", "Phone PGA"}, 151 {"HP Mixer", "Line Playback Switch", "Line PGA"}, 152 {"HP Mixer", NULL, "Left DAC"}, 153 {"HP Mixer", NULL, "Right DAC"}, 154 155 /* mono mixer */ 156 {"Mono Mixer", NULL, "HP Mixer"}, 157 158 /* outputs */ 159 {"Headphone PGA", NULL, "HP Mixer"}, 160 {"HPOUTL", NULL, "Headphone PGA"}, 161 {"HPOUTR", NULL, "Headphone PGA"}, 162 {"Line out PGA", NULL, "HP Mixer"}, 163 {"LOUT", NULL, "Line out PGA"}, 164 {"ROUT", NULL, "Line out PGA"}, 165 {"Mono PGA", NULL, "Mono Mixer"}, 166 {"MONOOUT", NULL, "Mono PGA"}, 167 168 /* inputs */ 169 {"CD PGA", NULL, "CDINL"}, 170 {"CD PGA", NULL, "CDINR"}, 171 {"Line PGA", NULL, "LINEINL"}, 172 {"Line PGA", NULL, "LINEINR"}, 173 {"Phone PGA", NULL, "PHONE"}, 174 {"Mic Source", "Mic 1", "MIC1"}, 175 {"Mic Source", "Mic 2", "MIC2"}, 176 {"Mic PGA", NULL, "Mic Source"}, 177 {"PCBEEP PGA", NULL, "PCBEEP"}, 178 179 /* Left capture selector */ 180 {"Left Capture Source", "Mic", "Mic Source"}, 181 {"Left Capture Source", "CD", "CDINL"}, 182 {"Left Capture Source", "Line", "LINEINL"}, 183 {"Left Capture Source", "Stereo Mix", "HP Mixer"}, 184 {"Left Capture Source", "Mono Mix", "HP Mixer"}, 185 {"Left Capture Source", "Phone", "PHONE"}, 186 187 /* Right capture source */ 188 {"Right Capture Source", "Mic", "Mic Source"}, 189 {"Right Capture Source", "CD", "CDINR"}, 190 {"Right Capture Source", "Line", "LINEINR"}, 191 {"Right Capture Source", "Stereo Mix", "HP Mixer"}, 192 {"Right Capture Source", "Mono Mix", "HP Mixer"}, 193 {"Right Capture Source", "Phone", "PHONE"}, 194 195 {"ADC PGA", NULL, "Left Capture Source"}, 196 {"ADC PGA", NULL, "Right Capture Source"}, 197 198 /* ADC's */ 199 {"Left ADC", NULL, "ADC PGA"}, 200 {"Right ADC", NULL, "ADC PGA"}, 201 }; 202 203 static int wm9705_add_widgets(struct snd_soc_codec *codec) 204 { 205 struct snd_soc_dapm_context *dapm = &codec->dapm; 206 207 snd_soc_dapm_new_controls(dapm, wm9705_dapm_widgets, 208 ARRAY_SIZE(wm9705_dapm_widgets)); 209 snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); 210 211 return 0; 212 } 213 214 /* We use a register cache to enhance read performance. */ 215 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg) 216 { 217 u16 *cache = codec->reg_cache; 218 219 switch (reg) { 220 case AC97_RESET: 221 case AC97_VENDOR_ID1: 222 case AC97_VENDOR_ID2: 223 return soc_ac97_ops.read(codec->ac97, reg); 224 default: 225 reg = reg >> 1; 226 227 if (reg >= (ARRAY_SIZE(wm9705_reg))) 228 return -EIO; 229 230 return cache[reg]; 231 } 232 } 233 234 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 235 unsigned int val) 236 { 237 u16 *cache = codec->reg_cache; 238 239 soc_ac97_ops.write(codec->ac97, reg, val); 240 reg = reg >> 1; 241 if (reg < (ARRAY_SIZE(wm9705_reg))) 242 cache[reg] = val; 243 244 return 0; 245 } 246 247 static int ac97_prepare(struct snd_pcm_substream *substream, 248 struct snd_soc_dai *dai) 249 { 250 struct snd_pcm_runtime *runtime = substream->runtime; 251 struct snd_soc_pcm_runtime *rtd = substream->private_data; 252 struct snd_soc_codec *codec = rtd->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 static struct snd_soc_dai_driver wm9705_dai[] = { 277 { 278 .name = "wm9705-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 = "wm9705-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 }; 307 308 static int wm9705_reset(struct snd_soc_codec *codec) 309 { 310 if (soc_ac97_ops.reset) { 311 soc_ac97_ops.reset(codec->ac97); 312 if (ac97_read(codec, 0) == wm9705_reg[0]) 313 return 0; /* Success */ 314 } 315 316 return -EIO; 317 } 318 319 #ifdef CONFIG_PM 320 static int wm9705_soc_suspend(struct snd_soc_codec *codec, pm_message_t msg) 321 { 322 soc_ac97_ops.write(codec->ac97, AC97_POWERDOWN, 0xffff); 323 324 return 0; 325 } 326 327 static int wm9705_soc_resume(struct snd_soc_codec *codec) 328 { 329 int i, ret; 330 u16 *cache = codec->reg_cache; 331 332 ret = wm9705_reset(codec); 333 if (ret < 0) { 334 printk(KERN_ERR "could not reset AC97 codec\n"); 335 return ret; 336 } 337 338 for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) { 339 soc_ac97_ops.write(codec->ac97, i, cache[i>>1]); 340 } 341 342 return 0; 343 } 344 #else 345 #define wm9705_soc_suspend NULL 346 #define wm9705_soc_resume NULL 347 #endif 348 349 static int wm9705_soc_probe(struct snd_soc_codec *codec) 350 { 351 int ret = 0; 352 353 printk(KERN_INFO "WM9705 SoC Audio Codec\n"); 354 355 ret = snd_soc_new_ac97_codec(codec, &soc_ac97_ops, 0); 356 if (ret < 0) { 357 printk(KERN_ERR "wm9705: failed to register AC97 codec\n"); 358 return ret; 359 } 360 361 ret = wm9705_reset(codec); 362 if (ret) 363 goto reset_err; 364 365 snd_soc_add_controls(codec, wm9705_snd_ac97_controls, 366 ARRAY_SIZE(wm9705_snd_ac97_controls)); 367 wm9705_add_widgets(codec); 368 369 return 0; 370 371 reset_err: 372 snd_soc_free_ac97_codec(codec); 373 return ret; 374 } 375 376 static int wm9705_soc_remove(struct snd_soc_codec *codec) 377 { 378 snd_soc_free_ac97_codec(codec); 379 return 0; 380 } 381 382 static struct snd_soc_codec_driver soc_codec_dev_wm9705 = { 383 .probe = wm9705_soc_probe, 384 .remove = wm9705_soc_remove, 385 .suspend = wm9705_soc_suspend, 386 .resume = wm9705_soc_resume, 387 .read = ac97_read, 388 .write = ac97_write, 389 .reg_cache_size = ARRAY_SIZE(wm9705_reg), 390 .reg_word_size = sizeof(u16), 391 .reg_cache_step = 2, 392 .reg_cache_default = wm9705_reg, 393 }; 394 395 static __devinit int wm9705_probe(struct platform_device *pdev) 396 { 397 return snd_soc_register_codec(&pdev->dev, 398 &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai)); 399 } 400 401 static int __devexit wm9705_remove(struct platform_device *pdev) 402 { 403 snd_soc_unregister_codec(&pdev->dev); 404 return 0; 405 } 406 407 static struct platform_driver wm9705_codec_driver = { 408 .driver = { 409 .name = "wm9705-codec", 410 .owner = THIS_MODULE, 411 }, 412 413 .probe = wm9705_probe, 414 .remove = __devexit_p(wm9705_remove), 415 }; 416 417 static int __init wm9705_init(void) 418 { 419 return platform_driver_register(&wm9705_codec_driver); 420 } 421 module_init(wm9705_init); 422 423 static void __exit wm9705_exit(void) 424 { 425 platform_driver_unregister(&wm9705_codec_driver); 426 } 427 module_exit(wm9705_exit); 428 429 MODULE_DESCRIPTION("ASoC WM9705 driver"); 430 MODULE_AUTHOR("Ian Molton"); 431 MODULE_LICENSE("GPL v2"); 432