1 /* 2 * WM8750 audio CODEC. 3 * 4 * Copyright (c) 2006 Openedhand Ltd. 5 * Written by Andrzej Zaborowski <balrog@zabor.org> 6 * 7 * This file is licensed under GNU GPL. 8 */ 9 10 #include "qemu/osdep.h" 11 #include "hw/hw.h" 12 #include "hw/i2c/i2c.h" 13 #include "audio/audio.h" 14 15 #define IN_PORT_N 3 16 #define OUT_PORT_N 3 17 18 #define CODEC "wm8750" 19 20 typedef struct { 21 int adc; 22 int adc_hz; 23 int dac; 24 int dac_hz; 25 } WMRate; 26 27 #define TYPE_WM8750 "wm8750" 28 #define WM8750(obj) OBJECT_CHECK(WM8750State, (obj), TYPE_WM8750) 29 30 typedef struct WM8750State { 31 I2CSlave parent_obj; 32 33 uint8_t i2c_data[2]; 34 int i2c_len; 35 QEMUSoundCard card; 36 SWVoiceIn *adc_voice[IN_PORT_N]; 37 SWVoiceOut *dac_voice[OUT_PORT_N]; 38 int enable; 39 void (*data_req)(void *, int, int); 40 void *opaque; 41 uint8_t data_in[4096]; 42 uint8_t data_out[4096]; 43 int idx_in, req_in; 44 int idx_out, req_out; 45 46 SWVoiceOut **out[2]; 47 uint8_t outvol[7], outmute[2]; 48 SWVoiceIn **in[2]; 49 uint8_t invol[4], inmute[2]; 50 51 uint8_t diff[2], pol, ds, monomix[2], alc, mute; 52 uint8_t path[4], mpath[2], power, format; 53 const WMRate *rate; 54 uint8_t rate_vmstate; 55 int adc_hz, dac_hz, ext_adc_hz, ext_dac_hz, master; 56 } WM8750State; 57 58 /* pow(10.0, -i / 20.0) * 255, i = 0..42 */ 59 static const uint8_t wm8750_vol_db_table[] = { 60 255, 227, 203, 181, 161, 143, 128, 114, 102, 90, 81, 72, 64, 57, 51, 45, 61 40, 36, 32, 29, 26, 23, 20, 18, 16, 14, 13, 11, 10, 9, 8, 7, 6, 6, 5, 5, 62 4, 4, 3, 3, 3, 2, 2 63 }; 64 65 #define WM8750_OUTVOL_TRANSFORM(x) wm8750_vol_db_table[(0x7f - x) / 3] 66 #define WM8750_INVOL_TRANSFORM(x) (x << 2) 67 68 static inline void wm8750_in_load(WM8750State *s) 69 { 70 if (s->idx_in + s->req_in <= sizeof(s->data_in)) 71 return; 72 s->idx_in = audio_MAX(0, (int) sizeof(s->data_in) - s->req_in); 73 AUD_read(*s->in[0], s->data_in + s->idx_in, 74 sizeof(s->data_in) - s->idx_in); 75 } 76 77 static inline void wm8750_out_flush(WM8750State *s) 78 { 79 int sent = 0; 80 while (sent < s->idx_out) 81 sent += AUD_write(*s->out[0], s->data_out + sent, s->idx_out - sent) 82 ?: s->idx_out; 83 s->idx_out = 0; 84 } 85 86 static void wm8750_audio_in_cb(void *opaque, int avail_b) 87 { 88 WM8750State *s = (WM8750State *) opaque; 89 s->req_in = avail_b; 90 s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2); 91 } 92 93 static void wm8750_audio_out_cb(void *opaque, int free_b) 94 { 95 WM8750State *s = (WM8750State *) opaque; 96 97 if (s->idx_out >= free_b) { 98 s->idx_out = free_b; 99 s->req_out = 0; 100 wm8750_out_flush(s); 101 } else 102 s->req_out = free_b - s->idx_out; 103 104 s->data_req(s->opaque, s->req_out >> 2, s->req_in >> 2); 105 } 106 107 static const WMRate wm_rate_table[] = { 108 { 256, 48000, 256, 48000 }, /* SR: 00000 */ 109 { 384, 48000, 384, 48000 }, /* SR: 00001 */ 110 { 256, 48000, 1536, 8000 }, /* SR: 00010 */ 111 { 384, 48000, 2304, 8000 }, /* SR: 00011 */ 112 { 1536, 8000, 256, 48000 }, /* SR: 00100 */ 113 { 2304, 8000, 384, 48000 }, /* SR: 00101 */ 114 { 1536, 8000, 1536, 8000 }, /* SR: 00110 */ 115 { 2304, 8000, 2304, 8000 }, /* SR: 00111 */ 116 { 1024, 12000, 1024, 12000 }, /* SR: 01000 */ 117 { 1526, 12000, 1536, 12000 }, /* SR: 01001 */ 118 { 768, 16000, 768, 16000 }, /* SR: 01010 */ 119 { 1152, 16000, 1152, 16000 }, /* SR: 01011 */ 120 { 384, 32000, 384, 32000 }, /* SR: 01100 */ 121 { 576, 32000, 576, 32000 }, /* SR: 01101 */ 122 { 128, 96000, 128, 96000 }, /* SR: 01110 */ 123 { 192, 96000, 192, 96000 }, /* SR: 01111 */ 124 { 256, 44100, 256, 44100 }, /* SR: 10000 */ 125 { 384, 44100, 384, 44100 }, /* SR: 10001 */ 126 { 256, 44100, 1408, 8018 }, /* SR: 10010 */ 127 { 384, 44100, 2112, 8018 }, /* SR: 10011 */ 128 { 1408, 8018, 256, 44100 }, /* SR: 10100 */ 129 { 2112, 8018, 384, 44100 }, /* SR: 10101 */ 130 { 1408, 8018, 1408, 8018 }, /* SR: 10110 */ 131 { 2112, 8018, 2112, 8018 }, /* SR: 10111 */ 132 { 1024, 11025, 1024, 11025 }, /* SR: 11000 */ 133 { 1536, 11025, 1536, 11025 }, /* SR: 11001 */ 134 { 512, 22050, 512, 22050 }, /* SR: 11010 */ 135 { 768, 22050, 768, 22050 }, /* SR: 11011 */ 136 { 512, 24000, 512, 24000 }, /* SR: 11100 */ 137 { 768, 24000, 768, 24000 }, /* SR: 11101 */ 138 { 128, 88200, 128, 88200 }, /* SR: 11110 */ 139 { 192, 88200, 192, 88200 }, /* SR: 11111 */ 140 }; 141 142 static void wm8750_vol_update(WM8750State *s) 143 { 144 /* FIXME: multiply all volumes by s->invol[2], s->invol[3] */ 145 146 AUD_set_volume_in(s->adc_voice[0], s->mute, 147 s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]), 148 s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1])); 149 AUD_set_volume_in(s->adc_voice[1], s->mute, 150 s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]), 151 s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1])); 152 AUD_set_volume_in(s->adc_voice[2], s->mute, 153 s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]), 154 s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1])); 155 156 /* FIXME: multiply all volumes by s->outvol[0], s->outvol[1] */ 157 158 /* Speaker: LOUT2VOL ROUT2VOL */ 159 AUD_set_volume_out(s->dac_voice[0], s->mute, 160 s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[4]), 161 s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[5])); 162 163 /* Headphone: LOUT1VOL ROUT1VOL */ 164 AUD_set_volume_out(s->dac_voice[1], s->mute, 165 s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[2]), 166 s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[3])); 167 168 /* MONOOUT: MONOVOL MONOVOL */ 169 AUD_set_volume_out(s->dac_voice[2], s->mute, 170 s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[6]), 171 s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[6])); 172 } 173 174 static void wm8750_set_format(WM8750State *s) 175 { 176 int i; 177 struct audsettings in_fmt; 178 struct audsettings out_fmt; 179 180 wm8750_out_flush(s); 181 182 if (s->in[0] && *s->in[0]) 183 AUD_set_active_in(*s->in[0], 0); 184 if (s->out[0] && *s->out[0]) 185 AUD_set_active_out(*s->out[0], 0); 186 187 for (i = 0; i < IN_PORT_N; i ++) 188 if (s->adc_voice[i]) { 189 AUD_close_in(&s->card, s->adc_voice[i]); 190 s->adc_voice[i] = NULL; 191 } 192 for (i = 0; i < OUT_PORT_N; i ++) 193 if (s->dac_voice[i]) { 194 AUD_close_out(&s->card, s->dac_voice[i]); 195 s->dac_voice[i] = NULL; 196 } 197 198 if (!s->enable) 199 return; 200 201 /* Setup input */ 202 in_fmt.endianness = 0; 203 in_fmt.nchannels = 2; 204 in_fmt.freq = s->adc_hz; 205 in_fmt.fmt = AUD_FMT_S16; 206 207 s->adc_voice[0] = AUD_open_in(&s->card, s->adc_voice[0], 208 CODEC ".input1", s, wm8750_audio_in_cb, &in_fmt); 209 s->adc_voice[1] = AUD_open_in(&s->card, s->adc_voice[1], 210 CODEC ".input2", s, wm8750_audio_in_cb, &in_fmt); 211 s->adc_voice[2] = AUD_open_in(&s->card, s->adc_voice[2], 212 CODEC ".input3", s, wm8750_audio_in_cb, &in_fmt); 213 214 /* Setup output */ 215 out_fmt.endianness = 0; 216 out_fmt.nchannels = 2; 217 out_fmt.freq = s->dac_hz; 218 out_fmt.fmt = AUD_FMT_S16; 219 220 s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0], 221 CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt); 222 s->dac_voice[1] = AUD_open_out(&s->card, s->dac_voice[1], 223 CODEC ".headphone", s, wm8750_audio_out_cb, &out_fmt); 224 /* MONOMIX is also in stereo for simplicity */ 225 s->dac_voice[2] = AUD_open_out(&s->card, s->dac_voice[2], 226 CODEC ".monomix", s, wm8750_audio_out_cb, &out_fmt); 227 /* no sense emulating OUT3 which is a mix of other outputs */ 228 229 wm8750_vol_update(s); 230 231 /* We should connect the left and right channels to their 232 * respective inputs/outputs but we have completely no need 233 * for mixing or combining paths to different ports, so we 234 * connect both channels to where the left channel is routed. */ 235 if (s->in[0] && *s->in[0]) 236 AUD_set_active_in(*s->in[0], 1); 237 if (s->out[0] && *s->out[0]) 238 AUD_set_active_out(*s->out[0], 1); 239 } 240 241 static void wm8750_clk_update(WM8750State *s, int ext) 242 { 243 if (s->master || !s->ext_dac_hz) 244 s->dac_hz = s->rate->dac_hz; 245 else 246 s->dac_hz = s->ext_dac_hz; 247 248 if (s->master || !s->ext_adc_hz) 249 s->adc_hz = s->rate->adc_hz; 250 else 251 s->adc_hz = s->ext_adc_hz; 252 253 if (s->master || (!s->ext_dac_hz && !s->ext_adc_hz)) { 254 if (!ext) 255 wm8750_set_format(s); 256 } else { 257 if (ext) 258 wm8750_set_format(s); 259 } 260 } 261 262 static void wm8750_reset(I2CSlave *i2c) 263 { 264 WM8750State *s = WM8750(i2c); 265 266 s->rate = &wm_rate_table[0]; 267 s->enable = 0; 268 wm8750_clk_update(s, 1); 269 s->diff[0] = 0; 270 s->diff[1] = 0; 271 s->ds = 0; 272 s->alc = 0; 273 s->in[0] = &s->adc_voice[0]; 274 s->invol[0] = 0x17; 275 s->invol[1] = 0x17; 276 s->invol[2] = 0xc3; 277 s->invol[3] = 0xc3; 278 s->out[0] = &s->dac_voice[0]; 279 s->outvol[0] = 0xff; 280 s->outvol[1] = 0xff; 281 s->outvol[2] = 0x79; 282 s->outvol[3] = 0x79; 283 s->outvol[4] = 0x79; 284 s->outvol[5] = 0x79; 285 s->outvol[6] = 0x79; 286 s->inmute[0] = 0; 287 s->inmute[1] = 0; 288 s->outmute[0] = 0; 289 s->outmute[1] = 0; 290 s->mute = 1; 291 s->path[0] = 0; 292 s->path[1] = 0; 293 s->path[2] = 0; 294 s->path[3] = 0; 295 s->mpath[0] = 0; 296 s->mpath[1] = 0; 297 s->format = 0x0a; 298 s->idx_in = sizeof(s->data_in); 299 s->req_in = 0; 300 s->idx_out = 0; 301 s->req_out = 0; 302 wm8750_vol_update(s); 303 s->i2c_len = 0; 304 } 305 306 static int wm8750_event(I2CSlave *i2c, enum i2c_event event) 307 { 308 WM8750State *s = WM8750(i2c); 309 310 switch (event) { 311 case I2C_START_SEND: 312 s->i2c_len = 0; 313 break; 314 case I2C_FINISH: 315 #ifdef VERBOSE 316 if (s->i2c_len < 2) 317 printf("%s: message too short (%i bytes)\n", 318 __func__, s->i2c_len); 319 #endif 320 break; 321 default: 322 break; 323 } 324 325 return 0; 326 } 327 328 #define WM8750_LINVOL 0x00 329 #define WM8750_RINVOL 0x01 330 #define WM8750_LOUT1V 0x02 331 #define WM8750_ROUT1V 0x03 332 #define WM8750_ADCDAC 0x05 333 #define WM8750_IFACE 0x07 334 #define WM8750_SRATE 0x08 335 #define WM8750_LDAC 0x0a 336 #define WM8750_RDAC 0x0b 337 #define WM8750_BASS 0x0c 338 #define WM8750_TREBLE 0x0d 339 #define WM8750_RESET 0x0f 340 #define WM8750_3D 0x10 341 #define WM8750_ALC1 0x11 342 #define WM8750_ALC2 0x12 343 #define WM8750_ALC3 0x13 344 #define WM8750_NGATE 0x14 345 #define WM8750_LADC 0x15 346 #define WM8750_RADC 0x16 347 #define WM8750_ADCTL1 0x17 348 #define WM8750_ADCTL2 0x18 349 #define WM8750_PWR1 0x19 350 #define WM8750_PWR2 0x1a 351 #define WM8750_ADCTL3 0x1b 352 #define WM8750_ADCIN 0x1f 353 #define WM8750_LADCIN 0x20 354 #define WM8750_RADCIN 0x21 355 #define WM8750_LOUTM1 0x22 356 #define WM8750_LOUTM2 0x23 357 #define WM8750_ROUTM1 0x24 358 #define WM8750_ROUTM2 0x25 359 #define WM8750_MOUTM1 0x26 360 #define WM8750_MOUTM2 0x27 361 #define WM8750_LOUT2V 0x28 362 #define WM8750_ROUT2V 0x29 363 #define WM8750_MOUTV 0x2a 364 365 static int wm8750_tx(I2CSlave *i2c, uint8_t data) 366 { 367 WM8750State *s = WM8750(i2c); 368 uint8_t cmd; 369 uint16_t value; 370 371 if (s->i2c_len >= 2) { 372 #ifdef VERBOSE 373 printf("%s: long message (%i bytes)\n", __func__, s->i2c_len); 374 #endif 375 return 1; 376 } 377 s->i2c_data[s->i2c_len ++] = data; 378 if (s->i2c_len != 2) 379 return 0; 380 381 cmd = s->i2c_data[0] >> 1; 382 value = ((s->i2c_data[0] << 8) | s->i2c_data[1]) & 0x1ff; 383 384 switch (cmd) { 385 case WM8750_LADCIN: /* ADC Signal Path Control (Left) */ 386 s->diff[0] = (((value >> 6) & 3) == 3); /* LINSEL */ 387 if (s->diff[0]) 388 s->in[0] = &s->adc_voice[0 + s->ds * 1]; 389 else 390 s->in[0] = &s->adc_voice[((value >> 6) & 3) * 1 + 0]; 391 break; 392 393 case WM8750_RADCIN: /* ADC Signal Path Control (Right) */ 394 s->diff[1] = (((value >> 6) & 3) == 3); /* RINSEL */ 395 if (s->diff[1]) 396 s->in[1] = &s->adc_voice[0 + s->ds * 1]; 397 else 398 s->in[1] = &s->adc_voice[((value >> 6) & 3) * 1 + 0]; 399 break; 400 401 case WM8750_ADCIN: /* ADC Input Mode */ 402 s->ds = (value >> 8) & 1; /* DS */ 403 if (s->diff[0]) 404 s->in[0] = &s->adc_voice[0 + s->ds * 1]; 405 if (s->diff[1]) 406 s->in[1] = &s->adc_voice[0 + s->ds * 1]; 407 s->monomix[0] = (value >> 6) & 3; /* MONOMIX */ 408 break; 409 410 case WM8750_ADCTL1: /* Additional Control (1) */ 411 s->monomix[1] = (value >> 1) & 1; /* DMONOMIX */ 412 break; 413 414 case WM8750_PWR1: /* Power Management (1) */ 415 s->enable = ((value >> 6) & 7) == 3; /* VMIDSEL, VREF */ 416 wm8750_set_format(s); 417 break; 418 419 case WM8750_LINVOL: /* Left Channel PGA */ 420 s->invol[0] = value & 0x3f; /* LINVOL */ 421 s->inmute[0] = (value >> 7) & 1; /* LINMUTE */ 422 wm8750_vol_update(s); 423 break; 424 425 case WM8750_RINVOL: /* Right Channel PGA */ 426 s->invol[1] = value & 0x3f; /* RINVOL */ 427 s->inmute[1] = (value >> 7) & 1; /* RINMUTE */ 428 wm8750_vol_update(s); 429 break; 430 431 case WM8750_ADCDAC: /* ADC and DAC Control */ 432 s->pol = (value >> 5) & 3; /* ADCPOL */ 433 s->mute = (value >> 3) & 1; /* DACMU */ 434 wm8750_vol_update(s); 435 break; 436 437 case WM8750_ADCTL3: /* Additional Control (3) */ 438 break; 439 440 case WM8750_LADC: /* Left ADC Digital Volume */ 441 s->invol[2] = value & 0xff; /* LADCVOL */ 442 wm8750_vol_update(s); 443 break; 444 445 case WM8750_RADC: /* Right ADC Digital Volume */ 446 s->invol[3] = value & 0xff; /* RADCVOL */ 447 wm8750_vol_update(s); 448 break; 449 450 case WM8750_ALC1: /* ALC Control (1) */ 451 s->alc = (value >> 7) & 3; /* ALCSEL */ 452 break; 453 454 case WM8750_NGATE: /* Noise Gate Control */ 455 case WM8750_3D: /* 3D enhance */ 456 break; 457 458 case WM8750_LDAC: /* Left Channel Digital Volume */ 459 s->outvol[0] = value & 0xff; /* LDACVOL */ 460 wm8750_vol_update(s); 461 break; 462 463 case WM8750_RDAC: /* Right Channel Digital Volume */ 464 s->outvol[1] = value & 0xff; /* RDACVOL */ 465 wm8750_vol_update(s); 466 break; 467 468 case WM8750_BASS: /* Bass Control */ 469 break; 470 471 case WM8750_LOUTM1: /* Left Mixer Control (1) */ 472 s->path[0] = (value >> 8) & 1; /* LD2LO */ 473 /* TODO: mute/unmute respective paths */ 474 wm8750_vol_update(s); 475 break; 476 477 case WM8750_LOUTM2: /* Left Mixer Control (2) */ 478 s->path[1] = (value >> 8) & 1; /* RD2LO */ 479 /* TODO: mute/unmute respective paths */ 480 wm8750_vol_update(s); 481 break; 482 483 case WM8750_ROUTM1: /* Right Mixer Control (1) */ 484 s->path[2] = (value >> 8) & 1; /* LD2RO */ 485 /* TODO: mute/unmute respective paths */ 486 wm8750_vol_update(s); 487 break; 488 489 case WM8750_ROUTM2: /* Right Mixer Control (2) */ 490 s->path[3] = (value >> 8) & 1; /* RD2RO */ 491 /* TODO: mute/unmute respective paths */ 492 wm8750_vol_update(s); 493 break; 494 495 case WM8750_MOUTM1: /* Mono Mixer Control (1) */ 496 s->mpath[0] = (value >> 8) & 1; /* LD2MO */ 497 /* TODO: mute/unmute respective paths */ 498 wm8750_vol_update(s); 499 break; 500 501 case WM8750_MOUTM2: /* Mono Mixer Control (2) */ 502 s->mpath[1] = (value >> 8) & 1; /* RD2MO */ 503 /* TODO: mute/unmute respective paths */ 504 wm8750_vol_update(s); 505 break; 506 507 case WM8750_LOUT1V: /* LOUT1 Volume */ 508 s->outvol[2] = value & 0x7f; /* LOUT1VOL */ 509 wm8750_vol_update(s); 510 break; 511 512 case WM8750_LOUT2V: /* LOUT2 Volume */ 513 s->outvol[4] = value & 0x7f; /* LOUT2VOL */ 514 wm8750_vol_update(s); 515 break; 516 517 case WM8750_ROUT1V: /* ROUT1 Volume */ 518 s->outvol[3] = value & 0x7f; /* ROUT1VOL */ 519 wm8750_vol_update(s); 520 break; 521 522 case WM8750_ROUT2V: /* ROUT2 Volume */ 523 s->outvol[5] = value & 0x7f; /* ROUT2VOL */ 524 wm8750_vol_update(s); 525 break; 526 527 case WM8750_MOUTV: /* MONOOUT Volume */ 528 s->outvol[6] = value & 0x7f; /* MONOOUTVOL */ 529 wm8750_vol_update(s); 530 break; 531 532 case WM8750_ADCTL2: /* Additional Control (2) */ 533 break; 534 535 case WM8750_PWR2: /* Power Management (2) */ 536 s->power = value & 0x7e; 537 /* TODO: mute/unmute respective paths */ 538 wm8750_vol_update(s); 539 break; 540 541 case WM8750_IFACE: /* Digital Audio Interface Format */ 542 s->format = value; 543 s->master = (value >> 6) & 1; /* MS */ 544 wm8750_clk_update(s, s->master); 545 break; 546 547 case WM8750_SRATE: /* Clocking and Sample Rate Control */ 548 s->rate = &wm_rate_table[(value >> 1) & 0x1f]; 549 wm8750_clk_update(s, 0); 550 break; 551 552 case WM8750_RESET: /* Reset */ 553 wm8750_reset(I2C_SLAVE(s)); 554 break; 555 556 #ifdef VERBOSE 557 default: 558 printf("%s: unknown register %02x\n", __func__, cmd); 559 #endif 560 } 561 562 return 0; 563 } 564 565 static int wm8750_rx(I2CSlave *i2c) 566 { 567 return 0x00; 568 } 569 570 static int wm8750_pre_save(void *opaque) 571 { 572 WM8750State *s = opaque; 573 574 s->rate_vmstate = s->rate - wm_rate_table; 575 576 return 0; 577 } 578 579 static int wm8750_post_load(void *opaque, int version_id) 580 { 581 WM8750State *s = opaque; 582 583 s->rate = &wm_rate_table[s->rate_vmstate & 0x1f]; 584 return 0; 585 } 586 587 static const VMStateDescription vmstate_wm8750 = { 588 .name = CODEC, 589 .version_id = 0, 590 .minimum_version_id = 0, 591 .pre_save = wm8750_pre_save, 592 .post_load = wm8750_post_load, 593 .fields = (VMStateField[]) { 594 VMSTATE_UINT8_ARRAY(i2c_data, WM8750State, 2), 595 VMSTATE_INT32(i2c_len, WM8750State), 596 VMSTATE_INT32(enable, WM8750State), 597 VMSTATE_INT32(idx_in, WM8750State), 598 VMSTATE_INT32(req_in, WM8750State), 599 VMSTATE_INT32(idx_out, WM8750State), 600 VMSTATE_INT32(req_out, WM8750State), 601 VMSTATE_UINT8_ARRAY(outvol, WM8750State, 7), 602 VMSTATE_UINT8_ARRAY(outmute, WM8750State, 2), 603 VMSTATE_UINT8_ARRAY(invol, WM8750State, 4), 604 VMSTATE_UINT8_ARRAY(inmute, WM8750State, 2), 605 VMSTATE_UINT8_ARRAY(diff, WM8750State, 2), 606 VMSTATE_UINT8(pol, WM8750State), 607 VMSTATE_UINT8(ds, WM8750State), 608 VMSTATE_UINT8_ARRAY(monomix, WM8750State, 2), 609 VMSTATE_UINT8(alc, WM8750State), 610 VMSTATE_UINT8(mute, WM8750State), 611 VMSTATE_UINT8_ARRAY(path, WM8750State, 4), 612 VMSTATE_UINT8_ARRAY(mpath, WM8750State, 2), 613 VMSTATE_UINT8(format, WM8750State), 614 VMSTATE_UINT8(power, WM8750State), 615 VMSTATE_UINT8(rate_vmstate, WM8750State), 616 VMSTATE_I2C_SLAVE(parent_obj, WM8750State), 617 VMSTATE_END_OF_LIST() 618 } 619 }; 620 621 static int wm8750_init(I2CSlave *i2c) 622 { 623 WM8750State *s = WM8750(i2c); 624 625 AUD_register_card(CODEC, &s->card); 626 wm8750_reset(I2C_SLAVE(s)); 627 628 return 0; 629 } 630 631 #if 0 632 static void wm8750_fini(I2CSlave *i2c) 633 { 634 WM8750State *s = WM8750(i2c); 635 636 wm8750_reset(I2C_SLAVE(s)); 637 AUD_remove_card(&s->card); 638 g_free(s); 639 } 640 #endif 641 642 void wm8750_data_req_set(DeviceState *dev, 643 void (*data_req)(void *, int, int), void *opaque) 644 { 645 WM8750State *s = WM8750(dev); 646 647 s->data_req = data_req; 648 s->opaque = opaque; 649 } 650 651 void wm8750_dac_dat(void *opaque, uint32_t sample) 652 { 653 WM8750State *s = (WM8750State *) opaque; 654 655 *(uint32_t *) &s->data_out[s->idx_out] = sample; 656 s->req_out -= 4; 657 s->idx_out += 4; 658 if (s->idx_out >= sizeof(s->data_out) || s->req_out <= 0) 659 wm8750_out_flush(s); 660 } 661 662 void *wm8750_dac_buffer(void *opaque, int samples) 663 { 664 WM8750State *s = (WM8750State *) opaque; 665 /* XXX: Should check if there are <i>samples</i> free samples available */ 666 void *ret = s->data_out + s->idx_out; 667 668 s->idx_out += samples << 2; 669 s->req_out -= samples << 2; 670 return ret; 671 } 672 673 void wm8750_dac_commit(void *opaque) 674 { 675 WM8750State *s = (WM8750State *) opaque; 676 677 wm8750_out_flush(s); 678 } 679 680 uint32_t wm8750_adc_dat(void *opaque) 681 { 682 WM8750State *s = (WM8750State *) opaque; 683 uint32_t *data; 684 685 if (s->idx_in >= sizeof(s->data_in)) { 686 wm8750_in_load(s); 687 if (s->idx_in >= sizeof(s->data_in)) { 688 return 0x80008000; /* silence in AUD_FMT_S16 sample format */ 689 } 690 } 691 692 data = (uint32_t *) &s->data_in[s->idx_in]; 693 s->req_in -= 4; 694 s->idx_in += 4; 695 return *data; 696 } 697 698 void wm8750_set_bclk_in(void *opaque, int new_hz) 699 { 700 WM8750State *s = (WM8750State *) opaque; 701 702 s->ext_adc_hz = new_hz; 703 s->ext_dac_hz = new_hz; 704 wm8750_clk_update(s, 1); 705 } 706 707 static void wm8750_class_init(ObjectClass *klass, void *data) 708 { 709 DeviceClass *dc = DEVICE_CLASS(klass); 710 I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass); 711 712 sc->init = wm8750_init; 713 sc->event = wm8750_event; 714 sc->recv = wm8750_rx; 715 sc->send = wm8750_tx; 716 dc->vmsd = &vmstate_wm8750; 717 } 718 719 static const TypeInfo wm8750_info = { 720 .name = TYPE_WM8750, 721 .parent = TYPE_I2C_SLAVE, 722 .instance_size = sizeof(WM8750State), 723 .class_init = wm8750_class_init, 724 }; 725 726 static void wm8750_register_types(void) 727 { 728 type_register_static(&wm8750_info); 729 } 730 731 type_init(wm8750_register_types) 732