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 #define WM9705_VENDOR_ID 0x574d4c05 26 #define WM9705_VENDOR_ID_MASK 0xffffffff 27 28 /* 29 * WM9705 register cache 30 */ 31 static const u16 wm9705_reg[] = { 32 0x6150, 0x8000, 0x8000, 0x8000, /* 0x0 */ 33 0x0000, 0x8000, 0x8008, 0x8008, /* 0x8 */ 34 0x8808, 0x8808, 0x8808, 0x8808, /* 0x10 */ 35 0x8808, 0x0000, 0x8000, 0x0000, /* 0x18 */ 36 0x0000, 0x0000, 0x0000, 0x000f, /* 0x20 */ 37 0x0605, 0x0000, 0xbb80, 0x0000, /* 0x28 */ 38 0x0000, 0xbb80, 0x0000, 0x0000, /* 0x30 */ 39 0x0000, 0x2000, 0x0000, 0x0000, /* 0x38 */ 40 0x0000, 0x0000, 0x0000, 0x0000, /* 0x40 */ 41 0x0000, 0x0000, 0x0000, 0x0000, /* 0x48 */ 42 0x0000, 0x0000, 0x0000, 0x0000, /* 0x50 */ 43 0x0000, 0x0000, 0x0000, 0x0000, /* 0x58 */ 44 0x0000, 0x0000, 0x0000, 0x0000, /* 0x60 */ 45 0x0000, 0x0000, 0x0000, 0x0000, /* 0x68 */ 46 0x0000, 0x0808, 0x0000, 0x0006, /* 0x70 */ 47 0x0000, 0x0000, 0x574d, 0x4c05, /* 0x78 */ 48 }; 49 50 static const struct snd_kcontrol_new wm9705_snd_ac97_controls[] = { 51 SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1), 52 SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1), 53 SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1), 54 SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1), 55 SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1), 56 SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1), 57 SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1), 58 SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1), 59 SOC_SINGLE("PCBeep Playback Volume", AC97_PC_BEEP, 1, 15, 1), 60 SOC_SINGLE("Phone Playback Volume", AC97_PHONE, 0, 31, 1), 61 SOC_DOUBLE("Line Playback Volume", AC97_LINE, 8, 0, 31, 1), 62 SOC_DOUBLE("CD Playback Volume", AC97_CD, 8, 0, 31, 1), 63 SOC_SINGLE("Mic Playback Volume", AC97_MIC, 0, 31, 1), 64 SOC_SINGLE("Mic 20dB Boost Switch", AC97_MIC, 6, 1, 0), 65 SOC_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0), 66 SOC_SINGLE("Capture Switch", AC97_REC_GAIN, 15, 1, 1), 67 }; 68 69 static const char *wm9705_mic[] = {"Mic 1", "Mic 2"}; 70 static const char *wm9705_rec_sel[] = {"Mic", "CD", "NC", "NC", 71 "Line", "Stereo Mix", "Mono Mix", "Phone"}; 72 73 static SOC_ENUM_SINGLE_DECL(wm9705_enum_mic, 74 AC97_GENERAL_PURPOSE, 8, wm9705_mic); 75 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_l, 76 AC97_REC_SEL, 8, wm9705_rec_sel); 77 static SOC_ENUM_SINGLE_DECL(wm9705_enum_rec_r, 78 AC97_REC_SEL, 0, wm9705_rec_sel); 79 80 /* Headphone Mixer */ 81 static const struct snd_kcontrol_new wm9705_hp_mixer_controls[] = { 82 SOC_DAPM_SINGLE("PCBeep Playback Switch", AC97_PC_BEEP, 15, 1, 1), 83 SOC_DAPM_SINGLE("CD Playback Switch", AC97_CD, 15, 1, 1), 84 SOC_DAPM_SINGLE("Mic Playback Switch", AC97_MIC, 15, 1, 1), 85 SOC_DAPM_SINGLE("Phone Playback Switch", AC97_PHONE, 15, 1, 1), 86 SOC_DAPM_SINGLE("Line Playback Switch", AC97_LINE, 15, 1, 1), 87 }; 88 89 /* Mic source */ 90 static const struct snd_kcontrol_new wm9705_mic_src_controls = 91 SOC_DAPM_ENUM("Route", wm9705_enum_mic); 92 93 /* Capture source */ 94 static const struct snd_kcontrol_new wm9705_capture_selectl_controls = 95 SOC_DAPM_ENUM("Route", wm9705_enum_rec_l); 96 static const struct snd_kcontrol_new wm9705_capture_selectr_controls = 97 SOC_DAPM_ENUM("Route", wm9705_enum_rec_r); 98 99 /* DAPM widgets */ 100 static const struct snd_soc_dapm_widget wm9705_dapm_widgets[] = { 101 SND_SOC_DAPM_MUX("Mic Source", SND_SOC_NOPM, 0, 0, 102 &wm9705_mic_src_controls), 103 SND_SOC_DAPM_MUX("Left Capture Source", SND_SOC_NOPM, 0, 0, 104 &wm9705_capture_selectl_controls), 105 SND_SOC_DAPM_MUX("Right Capture Source", SND_SOC_NOPM, 0, 0, 106 &wm9705_capture_selectr_controls), 107 SND_SOC_DAPM_DAC("Left DAC", "Left HiFi Playback", 108 SND_SOC_NOPM, 0, 0), 109 SND_SOC_DAPM_DAC("Right DAC", "Right HiFi Playback", 110 SND_SOC_NOPM, 0, 0), 111 SND_SOC_DAPM_MIXER_NAMED_CTL("HP Mixer", SND_SOC_NOPM, 0, 0, 112 &wm9705_hp_mixer_controls[0], 113 ARRAY_SIZE(wm9705_hp_mixer_controls)), 114 SND_SOC_DAPM_MIXER("Mono Mixer", SND_SOC_NOPM, 0, 0, NULL, 0), 115 SND_SOC_DAPM_ADC("Left ADC", "Left HiFi Capture", SND_SOC_NOPM, 0, 0), 116 SND_SOC_DAPM_ADC("Right ADC", "Right HiFi Capture", SND_SOC_NOPM, 0, 0), 117 SND_SOC_DAPM_PGA("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 118 SND_SOC_DAPM_PGA("Speaker PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 119 SND_SOC_DAPM_PGA("Line PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 120 SND_SOC_DAPM_PGA("Line out PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 121 SND_SOC_DAPM_PGA("Mono PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 122 SND_SOC_DAPM_PGA("Phone PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 123 SND_SOC_DAPM_PGA("Mic PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 124 SND_SOC_DAPM_PGA("PCBEEP PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 125 SND_SOC_DAPM_PGA("CD PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 126 SND_SOC_DAPM_PGA("ADC PGA", SND_SOC_NOPM, 0, 0, NULL, 0), 127 SND_SOC_DAPM_OUTPUT("HPOUTL"), 128 SND_SOC_DAPM_OUTPUT("HPOUTR"), 129 SND_SOC_DAPM_OUTPUT("LOUT"), 130 SND_SOC_DAPM_OUTPUT("ROUT"), 131 SND_SOC_DAPM_OUTPUT("MONOOUT"), 132 SND_SOC_DAPM_INPUT("PHONE"), 133 SND_SOC_DAPM_INPUT("LINEINL"), 134 SND_SOC_DAPM_INPUT("LINEINR"), 135 SND_SOC_DAPM_INPUT("CDINL"), 136 SND_SOC_DAPM_INPUT("CDINR"), 137 SND_SOC_DAPM_INPUT("PCBEEP"), 138 SND_SOC_DAPM_INPUT("MIC1"), 139 SND_SOC_DAPM_INPUT("MIC2"), 140 }; 141 142 /* Audio map 143 * WM9705 has no switches to disable the route from the inputs to the HP mixer 144 * so in order to prevent active inputs from forcing the audio outputs to be 145 * constantly enabled, we use the mutes on those inputs to simulate such 146 * controls. 147 */ 148 static const struct snd_soc_dapm_route wm9705_audio_map[] = { 149 /* HP mixer */ 150 {"HP Mixer", "PCBeep Playback Switch", "PCBEEP PGA"}, 151 {"HP Mixer", "CD Playback Switch", "CD PGA"}, 152 {"HP Mixer", "Mic Playback Switch", "Mic PGA"}, 153 {"HP Mixer", "Phone Playback Switch", "Phone PGA"}, 154 {"HP Mixer", "Line Playback Switch", "Line PGA"}, 155 {"HP Mixer", NULL, "Left DAC"}, 156 {"HP Mixer", NULL, "Right DAC"}, 157 158 /* mono mixer */ 159 {"Mono Mixer", NULL, "HP Mixer"}, 160 161 /* outputs */ 162 {"Headphone PGA", NULL, "HP Mixer"}, 163 {"HPOUTL", NULL, "Headphone PGA"}, 164 {"HPOUTR", NULL, "Headphone PGA"}, 165 {"Line out PGA", NULL, "HP Mixer"}, 166 {"LOUT", NULL, "Line out PGA"}, 167 {"ROUT", NULL, "Line out PGA"}, 168 {"Mono PGA", NULL, "Mono Mixer"}, 169 {"MONOOUT", NULL, "Mono PGA"}, 170 171 /* inputs */ 172 {"CD PGA", NULL, "CDINL"}, 173 {"CD PGA", NULL, "CDINR"}, 174 {"Line PGA", NULL, "LINEINL"}, 175 {"Line PGA", NULL, "LINEINR"}, 176 {"Phone PGA", NULL, "PHONE"}, 177 {"Mic Source", "Mic 1", "MIC1"}, 178 {"Mic Source", "Mic 2", "MIC2"}, 179 {"Mic PGA", NULL, "Mic Source"}, 180 {"PCBEEP PGA", NULL, "PCBEEP"}, 181 182 /* Left capture selector */ 183 {"Left Capture Source", "Mic", "Mic Source"}, 184 {"Left Capture Source", "CD", "CDINL"}, 185 {"Left Capture Source", "Line", "LINEINL"}, 186 {"Left Capture Source", "Stereo Mix", "HP Mixer"}, 187 {"Left Capture Source", "Mono Mix", "HP Mixer"}, 188 {"Left Capture Source", "Phone", "PHONE"}, 189 190 /* Right capture source */ 191 {"Right Capture Source", "Mic", "Mic Source"}, 192 {"Right Capture Source", "CD", "CDINR"}, 193 {"Right Capture Source", "Line", "LINEINR"}, 194 {"Right Capture Source", "Stereo Mix", "HP Mixer"}, 195 {"Right Capture Source", "Mono Mix", "HP Mixer"}, 196 {"Right Capture Source", "Phone", "PHONE"}, 197 198 {"ADC PGA", NULL, "Left Capture Source"}, 199 {"ADC PGA", NULL, "Right Capture Source"}, 200 201 /* ADC's */ 202 {"Left ADC", NULL, "ADC PGA"}, 203 {"Right ADC", NULL, "ADC PGA"}, 204 }; 205 206 /* We use a register cache to enhance read performance. */ 207 static unsigned int ac97_read(struct snd_soc_codec *codec, unsigned int reg) 208 { 209 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 210 u16 *cache = codec->reg_cache; 211 212 switch (reg) { 213 case AC97_RESET: 214 case AC97_VENDOR_ID1: 215 case AC97_VENDOR_ID2: 216 return soc_ac97_ops->read(ac97, reg); 217 default: 218 reg = reg >> 1; 219 220 if (reg >= (ARRAY_SIZE(wm9705_reg))) 221 return -EIO; 222 223 return cache[reg]; 224 } 225 } 226 227 static int ac97_write(struct snd_soc_codec *codec, unsigned int reg, 228 unsigned int val) 229 { 230 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 231 u16 *cache = codec->reg_cache; 232 233 soc_ac97_ops->write(ac97, reg, val); 234 reg = reg >> 1; 235 if (reg < (ARRAY_SIZE(wm9705_reg))) 236 cache[reg] = val; 237 238 return 0; 239 } 240 241 static int ac97_prepare(struct snd_pcm_substream *substream, 242 struct snd_soc_dai *dai) 243 { 244 struct snd_soc_codec *codec = dai->codec; 245 int reg; 246 u16 vra; 247 248 vra = ac97_read(codec, AC97_EXTENDED_STATUS); 249 ac97_write(codec, AC97_EXTENDED_STATUS, vra | 0x1); 250 251 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 252 reg = AC97_PCM_FRONT_DAC_RATE; 253 else 254 reg = AC97_PCM_LR_ADC_RATE; 255 256 return ac97_write(codec, reg, substream->runtime->rate); 257 } 258 259 #define WM9705_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | \ 260 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \ 261 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \ 262 SNDRV_PCM_RATE_48000) 263 264 static const struct snd_soc_dai_ops wm9705_dai_ops = { 265 .prepare = ac97_prepare, 266 }; 267 268 static struct snd_soc_dai_driver wm9705_dai[] = { 269 { 270 .name = "wm9705-hifi", 271 .playback = { 272 .stream_name = "HiFi Playback", 273 .channels_min = 1, 274 .channels_max = 2, 275 .rates = WM9705_AC97_RATES, 276 .formats = SND_SOC_STD_AC97_FMTS, 277 }, 278 .capture = { 279 .stream_name = "HiFi Capture", 280 .channels_min = 1, 281 .channels_max = 2, 282 .rates = WM9705_AC97_RATES, 283 .formats = SND_SOC_STD_AC97_FMTS, 284 }, 285 .ops = &wm9705_dai_ops, 286 }, 287 { 288 .name = "wm9705-aux", 289 .playback = { 290 .stream_name = "Aux Playback", 291 .channels_min = 1, 292 .channels_max = 1, 293 .rates = WM9705_AC97_RATES, 294 .formats = SNDRV_PCM_FMTBIT_S16_LE, 295 }, 296 } 297 }; 298 299 #ifdef CONFIG_PM 300 static int wm9705_soc_suspend(struct snd_soc_codec *codec) 301 { 302 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 303 304 soc_ac97_ops->write(ac97, AC97_POWERDOWN, 0xffff); 305 306 return 0; 307 } 308 309 static int wm9705_soc_resume(struct snd_soc_codec *codec) 310 { 311 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 312 int i, ret; 313 u16 *cache = codec->reg_cache; 314 315 ret = snd_ac97_reset(ac97, true, WM9705_VENDOR_ID, 316 WM9705_VENDOR_ID_MASK); 317 if (ret < 0) 318 return ret; 319 320 for (i = 2; i < ARRAY_SIZE(wm9705_reg) << 1; i += 2) { 321 soc_ac97_ops->write(ac97, i, cache[i>>1]); 322 } 323 324 return 0; 325 } 326 #else 327 #define wm9705_soc_suspend NULL 328 #define wm9705_soc_resume NULL 329 #endif 330 331 static int wm9705_soc_probe(struct snd_soc_codec *codec) 332 { 333 struct snd_ac97 *ac97; 334 335 ac97 = snd_soc_new_ac97_codec(codec, WM9705_VENDOR_ID, 336 WM9705_VENDOR_ID_MASK); 337 if (IS_ERR(ac97)) { 338 dev_err(codec->dev, "Failed to register AC97 codec\n"); 339 return PTR_ERR(ac97); 340 } 341 342 snd_soc_codec_set_drvdata(codec, ac97); 343 344 return 0; 345 } 346 347 static int wm9705_soc_remove(struct snd_soc_codec *codec) 348 { 349 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 350 351 snd_soc_free_ac97_codec(ac97); 352 return 0; 353 } 354 355 static struct snd_soc_codec_driver soc_codec_dev_wm9705 = { 356 .probe = wm9705_soc_probe, 357 .remove = wm9705_soc_remove, 358 .suspend = wm9705_soc_suspend, 359 .resume = wm9705_soc_resume, 360 .read = ac97_read, 361 .write = ac97_write, 362 .reg_cache_size = ARRAY_SIZE(wm9705_reg), 363 .reg_word_size = sizeof(u16), 364 .reg_cache_step = 2, 365 .reg_cache_default = wm9705_reg, 366 367 .controls = wm9705_snd_ac97_controls, 368 .num_controls = ARRAY_SIZE(wm9705_snd_ac97_controls), 369 .dapm_widgets = wm9705_dapm_widgets, 370 .num_dapm_widgets = ARRAY_SIZE(wm9705_dapm_widgets), 371 .dapm_routes = wm9705_audio_map, 372 .num_dapm_routes = ARRAY_SIZE(wm9705_audio_map), 373 }; 374 375 static int wm9705_probe(struct platform_device *pdev) 376 { 377 return snd_soc_register_codec(&pdev->dev, 378 &soc_codec_dev_wm9705, wm9705_dai, ARRAY_SIZE(wm9705_dai)); 379 } 380 381 static int wm9705_remove(struct platform_device *pdev) 382 { 383 snd_soc_unregister_codec(&pdev->dev); 384 return 0; 385 } 386 387 static struct platform_driver wm9705_codec_driver = { 388 .driver = { 389 .name = "wm9705-codec", 390 }, 391 392 .probe = wm9705_probe, 393 .remove = wm9705_remove, 394 }; 395 396 module_platform_driver(wm9705_codec_driver); 397 398 MODULE_DESCRIPTION("ASoC WM9705 driver"); 399 MODULE_AUTHOR("Ian Molton"); 400 MODULE_LICENSE("GPL v2"); 401