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 */ 28static 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 47static 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 66static const char *wm9705_mic[] = {"Mic 1", "Mic 2"}; 67static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC", 68 "Line", "Stereo Mix", "Mono Mix", "Phone"}; 69 70static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic, 71 AC97_GENERAL_PURPOSE, 8, wm9705_mic); 72static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l, 73 AC97_REC_SEL, 8, wm9705_rec_sel); 74static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r, 75 AC97_REC_SEL, 0, wm9705_rec_sel); 76 77/* Headphone Mixer */ 78static 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 */ 87static const struct snd_kcontrol_new wm9705_mic_src_controls = 88 SOC_DAPM_ENUM("Route", wm9705_enum_mic); 89 90/* Capture source */ 91static const struct snd_kcontrol_new wm9705_capture_selectl_controls = 92 SOC_DAPM_ENUM("Route", wm9705_enum_rec_l); 93static const struct snd_kcontrol_new wm9705_capture_selectr_controls = 94 SOC_DAPM_ENUM("Route", wm9705_enum_rec_r); 95 96/* DAPM widgets */ 97static 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 */ 145static const struct snd_soc_dapm_route wm9705_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/* We use a register cache to enhance read performance. */ 204static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg) 205{ 206 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 207 u16 *cache = codec->reg_cache; 208 209 switch (reg) { 210 case AC97_RESET: 211 case AC97_VENDOR_ID1: 212 case AC97_VENDOR_ID2: 213 return soc_ac97_ops->read(ac97, reg); 214 default: 215 reg = reg >> 1; 216 217 if (reg >= (ARRAY_SIZE(wm9705_reg))) 218 return -EIO; 219 220 return cache[reg]; 221 } 222} 223 224static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 225 unsigned int val) 226{ 227 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 228 u16 *cache = codec->reg_cache; 229 230 soc_ac97_ops->write(ac97, reg, val); 231 reg = reg >> 1; 232 if (reg < (ARRAY_SIZE(wm9705_reg))) 233 cache[reg] = val; 234 235 return 0; 236} 237 238static int ac97_prepare(struct snd_pcm_substream *substream, 239 struct snd_soc_dai *dai) 240{ 241 struct snd_soc_codec *codec = dai->codec; 242 int reg; 243 u16 vra; 244 245 vra = ac97_read(codec, AC97_EXTENDED_STATUS); 246 ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1); 247 248 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 249 reg = AC97_PCM_FRONT_DAC_RATE; 250 else 251 reg = AC97_PCM_LR_ADC_RATE; 252 253 return ac97_write(codec, reg, substream->runtime->rate); 254} 255 256#define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \ 257 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ 258 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ 259 SNDRV_PCM_RATE_48000) 260 261static const struct snd_soc_dai_ops wm9705_dai_ops = { 262 .prepare = ac97_prepare, 263}; 264 265static struct snd_soc_dai_driver wm9705_dai[] = { 266 { 267 .name = "wm9705-hifi", 268 .playback = { 269 .stream_name = "HiFi Playback", 270 .channels_min = 1, 271 .channels_max = 2, 272 .rates = WM9705_AC97_RATES, 273 .formats = SND_SOC_STD_AC97_FMTS, 274 }, 275 .capture = { 276 .stream_name = "HiFi Capture", 277 .channels_min = 1, 278 .channels_max = 2, 279 .rates = WM9705_AC97_RATES, 280 .formats = SND_SOC_STD_AC97_FMTS, 281 }, 282 .ops = &wm9705_dai_ops, 283 }, 284 { 285 .name = "wm9705-aux", 286 .playback = { 287 .stream_name = "Aux Playback", 288 .channels_min = 1, 289 .channels_max = 1, 290 .rates = WM9705_AC97_RATES, 291 .formats = SNDRV_PCM_FMTBIT_S16_LE, 292 }, 293 } 294}; 295 296static int wm9705_reset(struct snd_soc_codec *codec) 297{ 298 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 299 300 if (soc_ac97_ops->reset) { 301 soc_ac97_ops->reset(ac97); 302 if (ac97_read(codec, 0) == wm9705_reg[0]) 303 return 0; /* Success */ 304 } 305 306 dev_err(codec->dev, "Failed to reset: AC97 link error\n"); 307 308 return -EIO; 309} 310 311#ifdef CONFIG_PM 312static int wm9705_soc_suspend(struct snd_soc_codec *codec) 313{ 314 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 315 316 soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff); 317 318 return 0; 319} 320 321static int wm9705_soc_resume(struct snd_soc_codec *codec) 322{ 323 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 324 int i, ret; 325 u16 *cache = codec->reg_cache; 326 327 ret = wm9705_reset(codec); 328 if (ret < 0) 329 return ret; 330 331 for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) { 332 soc_ac97_ops->write(ac97, i, cache[i>>1]); 333 } 334 335 return 0; 336} 337#else 338#define wm9705_soc_suspend NULL 339#define wm9705_soc_resume NULL 340#endif 341 342static int wm9705_soc_probe(struct snd_soc_codec *codec) 343{ 344 struct snd_ac97 *ac97; 345 int ret = 0; 346 347 ac97 = snd_soc_alloc_ac97_codec(codec); 348 if (IS_ERR(ac97)) { 349 ret = PTR_ERR(ac97); 350 dev_err(codec->dev, "Failed to register AC97 codec\n"); 351 return ret; 352 } 353 354 ret = wm9705_reset(codec); 355 if (ret) 356 goto err_put_device; 357 358 ret = device_add(&ac97->dev); 359 if (ret) 360 goto err_put_device; 361 362 snd_soc_codec_set_drvdata(codec, ac97); 363 364 return 0; 365 366err_put_device: 367 put_device(&ac97->dev); 368 return ret; 369} 370 371static int wm9705_soc_remove(struct snd_soc_codec *codec) 372{ 373 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 374 375 snd_soc_free_ac97_codec(ac97); 376 return 0; 377} 378 379static struct snd_soc_codec_driver soc_codec_dev_wm9705 = { 380 .probe = wm9705_soc_probe, 381 .remove = wm9705_soc_remove, 382 .suspend = wm9705_soc_suspend, 383 .resume = wm9705_soc_resume, 384 .read = ac97_read, 385 .write = ac97_write, 386 .reg_cache_size = ARRAY_SIZE(wm9705_reg), 387 .reg_word_size = sizeof(u16), 388 .reg_cache_step = 2, 389 .reg_cache_default = wm9705_reg, 390 391 .controls = wm9705_snd_ac97_controls, 392 .num_controls = ARRAY_SIZE(wm9705_snd_ac97_controls), 393 .dapm_widgets = wm9705_dapm_widgets, 394 .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets), 395 .dapm_routes = wm9705_audio_map, 396 .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map), 397}; 398 399static int wm9705_probe(struct platform_device *pdev) 400{ 401 return snd_soc_register_codec(&pdev->dev, 402 &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai)); 403} 404 405static int wm9705_remove(struct platform_device *pdev) 406{ 407 snd_soc_unregister_codec(&pdev->dev); 408 return 0; 409} 410 411static struct platform_driver wm9705_codec_driver = { 412 .driver = { 413 .name = "wm9705-codec", 414 }, 415 416 .probe = wm9705_probe, 417 .remove = wm9705_remove, 418}; 419 420module_platform_driver(wm9705_codec_driver); 421 422MODULE_DESCRIPTION("ASoC WM9705 driver"); 423MODULE_AUTHOR("Ian Molton"); 424MODULE_LICENSE("GPL v2"); 425