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 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 143 u16 *cache = codec->reg_cache; 144 145 if (reg > AC97_STAC_PAGE0) { 146 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 147 soc_ac97_ops->write(ac97, reg, val); 148 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 149 return 0; 150 } 151 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 152 return -EIO; 153 154 soc_ac97_ops->write(ac97, reg, val); 155 cache[reg / 2] = val; 156 return 0; 157 } 158 159 static unsigned int stac9766_ac97_read(struct snd_soc_codec *codec, 160 unsigned int reg) 161 { 162 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 163 u16 val = 0, *cache = codec->reg_cache; 164 165 if (reg > AC97_STAC_PAGE0) { 166 stac9766_ac97_write(codec, AC97_INT_PAGING, 0); 167 val = soc_ac97_ops->read(ac97, reg - AC97_STAC_PAGE0); 168 stac9766_ac97_write(codec, AC97_INT_PAGING, 1); 169 return val; 170 } 171 if (reg / 2 >= ARRAY_SIZE(stac9766_reg)) 172 return -EIO; 173 174 if (reg == AC97_RESET || reg == AC97_GPIO_STATUS || 175 reg == AC97_INT_PAGING || reg == AC97_VENDOR_ID1 || 176 reg == AC97_VENDOR_ID2) { 177 178 val = soc_ac97_ops->read(ac97, reg); 179 return val; 180 } 181 return cache[reg / 2]; 182 } 183 184 static int ac97_analog_prepare(struct snd_pcm_substream *substream, 185 struct snd_soc_dai *dai) 186 { 187 struct snd_soc_codec *codec = dai->codec; 188 struct snd_pcm_runtime *runtime = substream->runtime; 189 unsigned short reg, vra; 190 191 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 192 193 vra |= 0x1; /* enable variable rate audio */ 194 vra &= ~0x4; /* disable SPDIF output */ 195 196 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 197 198 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 199 reg = AC97_PCM_FRONT_DAC_RATE; 200 else 201 reg = AC97_PCM_LR_ADC_RATE; 202 203 return stac9766_ac97_write(codec, reg, runtime->rate); 204 } 205 206 static int ac97_digital_prepare(struct snd_pcm_substream *substream, 207 struct snd_soc_dai *dai) 208 { 209 struct snd_soc_codec *codec = dai->codec; 210 struct snd_pcm_runtime *runtime = substream->runtime; 211 unsigned short reg, vra; 212 213 stac9766_ac97_write(codec, AC97_SPDIF, 0x2002); 214 215 vra = stac9766_ac97_read(codec, AC97_EXTENDED_STATUS); 216 vra |= 0x5; /* Enable VRA and SPDIF out */ 217 218 stac9766_ac97_write(codec, AC97_EXTENDED_STATUS, vra); 219 220 reg = AC97_PCM_FRONT_DAC_RATE; 221 222 return stac9766_ac97_write(codec, reg, runtime->rate); 223 } 224 225 static int stac9766_set_bias_level(struct snd_soc_codec *codec, 226 enum snd_soc_bias_level level) 227 { 228 switch (level) { 229 case SND_SOC_BIAS_ON: /* full On */ 230 case SND_SOC_BIAS_PREPARE: /* partial On */ 231 case SND_SOC_BIAS_STANDBY: /* Off, with power */ 232 stac9766_ac97_write(codec, AC97_POWERDOWN, 0x0000); 233 break; 234 case SND_SOC_BIAS_OFF: /* Off, without power */ 235 /* disable everything including AC link */ 236 stac9766_ac97_write(codec, AC97_POWERDOWN, 0xffff); 237 break; 238 } 239 return 0; 240 } 241 242 static int stac9766_reset(struct snd_soc_codec *codec, int try_warm) 243 { 244 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 245 246 if (try_warm && soc_ac97_ops->warm_reset) { 247 soc_ac97_ops->warm_reset(ac97); 248 if (stac9766_ac97_read(codec, 0) == stac9766_reg[0]) 249 return 1; 250 } 251 252 soc_ac97_ops->reset(ac97); 253 if (soc_ac97_ops->warm_reset) 254 soc_ac97_ops->warm_reset(ac97); 255 if (stac9766_ac97_read(codec, 0) != stac9766_reg[0]) 256 return -EIO; 257 return 0; 258 } 259 260 static int stac9766_codec_resume(struct snd_soc_codec *codec) 261 { 262 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 263 u16 id, reset; 264 265 reset = 0; 266 /* give the codec an AC97 warm reset to start the link */ 267 reset: 268 if (reset > 5) { 269 dev_err(codec->dev, "Failed to resume\n"); 270 return -EIO; 271 } 272 ac97->bus->ops->warm_reset(ac97); 273 id = soc_ac97_ops->read(ac97, AC97_VENDOR_ID2); 274 if (id != 0x4c13) { 275 stac9766_reset(codec, 0); 276 reset++; 277 goto reset; 278 } 279 280 return 0; 281 } 282 283 static const struct snd_soc_dai_ops stac9766_dai_ops_analog = { 284 .prepare = ac97_analog_prepare, 285 }; 286 287 static const struct snd_soc_dai_ops stac9766_dai_ops_digital = { 288 .prepare = ac97_digital_prepare, 289 }; 290 291 static struct snd_soc_dai_driver stac9766_dai[] = { 292 { 293 .name = "stac9766-hifi-analog", 294 295 /* stream cababilities */ 296 .playback = { 297 .stream_name = "stac9766 analog", 298 .channels_min = 1, 299 .channels_max = 2, 300 .rates = SNDRV_PCM_RATE_8000_48000, 301 .formats = SND_SOC_STD_AC97_FMTS, 302 }, 303 .capture = { 304 .stream_name = "stac9766 analog", 305 .channels_min = 1, 306 .channels_max = 2, 307 .rates = SNDRV_PCM_RATE_8000_48000, 308 .formats = SND_SOC_STD_AC97_FMTS, 309 }, 310 /* alsa ops */ 311 .ops = &stac9766_dai_ops_analog, 312 }, 313 { 314 .name = "stac9766-hifi-IEC958", 315 316 /* stream cababilities */ 317 .playback = { 318 .stream_name = "stac9766 IEC958", 319 .channels_min = 1, 320 .channels_max = 2, 321 .rates = SNDRV_PCM_RATE_32000 | \ 322 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000, 323 .formats = SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE, 324 }, 325 /* alsa ops */ 326 .ops = &stac9766_dai_ops_digital, 327 } 328 }; 329 330 static int stac9766_codec_probe(struct snd_soc_codec *codec) 331 { 332 struct snd_ac97 *ac97; 333 int ret = 0; 334 335 ac97 = snd_soc_new_ac97_codec(codec); 336 if (IS_ERR(ac97)) 337 return PTR_ERR(ac97); 338 339 snd_soc_codec_set_drvdata(codec, ac97); 340 341 /* do a cold reset for the controller and then try 342 * a warm reset followed by an optional cold reset for codec */ 343 stac9766_reset(codec, 0); 344 ret = stac9766_reset(codec, 1); 345 if (ret < 0) { 346 dev_err(codec->dev, "Failed to reset: AC97 link error\n"); 347 goto codec_err; 348 } 349 350 return 0; 351 352 codec_err: 353 snd_soc_free_ac97_codec(ac97); 354 return ret; 355 } 356 357 static int stac9766_codec_remove(struct snd_soc_codec *codec) 358 { 359 struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec); 360 361 snd_soc_free_ac97_codec(ac97); 362 return 0; 363 } 364 365 static struct snd_soc_codec_driver soc_codec_dev_stac9766 = { 366 .controls = stac9766_snd_ac97_controls, 367 .num_controls = ARRAY_SIZE(stac9766_snd_ac97_controls), 368 .write = stac9766_ac97_write, 369 .read = stac9766_ac97_read, 370 .set_bias_level = stac9766_set_bias_level, 371 .suspend_bias_off = true, 372 .probe = stac9766_codec_probe, 373 .remove = stac9766_codec_remove, 374 .resume = stac9766_codec_resume, 375 .reg_cache_size = ARRAY_SIZE(stac9766_reg), 376 .reg_word_size = sizeof(u16), 377 .reg_cache_step = 2, 378 .reg_cache_default = stac9766_reg, 379 }; 380 381 static int stac9766_probe(struct platform_device *pdev) 382 { 383 return snd_soc_register_codec(&pdev->dev, 384 &soc_codec_dev_stac9766, stac9766_dai, ARRAY_SIZE(stac9766_dai)); 385 } 386 387 static int stac9766_remove(struct platform_device *pdev) 388 { 389 snd_soc_unregister_codec(&pdev->dev); 390 return 0; 391 } 392 393 static struct platform_driver stac9766_codec_driver = { 394 .driver = { 395 .name = "stac9766-codec", 396 }, 397 398 .probe = stac9766_probe, 399 .remove = stac9766_remove, 400 }; 401 402 module_platform_driver(stac9766_codec_driver); 403 404 MODULE_DESCRIPTION("ASoC stac9766 driver"); 405 MODULE_AUTHOR("Jon Smirl <jonsmirl@gmail.com>"); 406 MODULE_LICENSE("GPL"); 407