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/i2c/i2c.h" 12 #include "migration/vmstate.h" 13 #include "qemu/module.h" 14 #include "hw/audio/wm8750.h" 15 #include "audio/audio.h" 16 17 #define IN_PORT_N 3 18 #define OUT_PORT_N 3 19 20 #define CODEC "wm8750" 21 22 typedef struct { 23 int adc; 24 int adc_hz; 25 int dac; 26 int dac_hz; 27 } WMRate; 28 29 #define WM8750(obj) OBJECT_CHECK(WM8750State, (obj), TYPE_WM8750) 30 31 typedef struct WM8750State { 32 I2CSlave parent_obj; 33 34 uint8_t i2c_data[2]; 35 int i2c_len; 36 QEMUSoundCard card; 37 SWVoiceIn *adc_voice[IN_PORT_N]; 38 SWVoiceOut *dac_voice[OUT_PORT_N]; 39 int enable; 40 void (*data_req)(void *, int, int); 41 void *opaque; 42 uint8_t data_in[4096]; 43 uint8_t data_out[4096]; 44 int idx_in, req_in; 45 int idx_out, req_out; 46 47 SWVoiceOut **out[2]; 48 uint8_t outvol[7], outmute[2]; 49 SWVoiceIn **in[2]; 50 uint8_t invol[4], inmute[2]; 51 52 uint8_t diff[2], pol, ds, monomix[2], alc, mute; 53 uint8_t path[4], mpath[2], power, format; 54 const WMRate *rate; 55 uint8_t rate_vmstate; 56 int adc_hz, dac_hz, ext_adc_hz, ext_dac_hz, master; 57 } WM8750State; 58 59 /* pow(10.0, -i / 20.0) * 255, i = 0..42 */ 60 static const uint8_t wm8750_vol_db_table[] = { 61 255, 227, 203, 181, 161, 143, 128, 114, 102, 90, 81, 72, 64, 57, 51, 45, 62 40, 36, 32, 29, 26, 23, 20, 18, 16, 14, 13, 11, 10, 9, 8, 7, 6, 6, 5, 5, 63 4, 4, 3, 3, 3, 2, 2 64 }; 65 66 #define WM8750_OUTVOL_TRANSFORM(x) wm8750_vol_db_table[(0x7f - x) / 3] 67 #define WM8750_INVOL_TRANSFORM(x) (x << 2) 68 69 static inline void wm8750_in_load(WM8750State *s) 70 { 71 if (s->idx_in + s->req_in <= sizeof(s->data_in)) 72 return; 73 s->idx_in = MAX(0, (int) sizeof(s->data_in) - s->req_in); 74 AUD_read(*s->in[0], s->data_in + s->idx_in, 75 sizeof(s->data_in) - s->idx_in); 76 } 77 78 static inline void wm8750_out_flush(WM8750State *s) 79 { 80 int sent = 0; 81 while (sent < s->idx_out) 82 sent += AUD_write(*s->out[0], s->data_out + sent, s->idx_out - sent) 83 ?: s->idx_out; 84 s->idx_out = 0; 85 } 86 87 static void wm8750_audio_in_cb(void *opaque, int avail_b) 88 { 89 WM8750State *s = (WM8750State *) opaque; 90 s->req_in = avail_b; 91 s->data_req(s->opaque, s->req_out >> 2, avail_b >> 2); 92 } 93 94 static void wm8750_audio_out_cb(void *opaque, int free_b) 95 { 96 WM8750State *s = (WM8750State *) opaque; 97 98 if (s->idx_out >= free_b) { 99 s->idx_out = free_b; 100 s->req_out = 0; 101 wm8750_out_flush(s); 102 } else 103 s->req_out = free_b - s->idx_out; 104 105 s->data_req(s->opaque, s->req_out >> 2, s->req_in >> 2); 106 } 107 108 static const WMRate wm_rate_table[] = { 109 { 256, 48000, 256, 48000 }, /* SR: 00000 */ 110 { 384, 48000, 384, 48000 }, /* SR: 00001 */ 111 { 256, 48000, 1536, 8000 }, /* SR: 00010 */ 112 { 384, 48000, 2304, 8000 }, /* SR: 00011 */ 113 { 1536, 8000, 256, 48000 }, /* SR: 00100 */ 114 { 2304, 8000, 384, 48000 }, /* SR: 00101 */ 115 { 1536, 8000, 1536, 8000 }, /* SR: 00110 */ 116 { 2304, 8000, 2304, 8000 }, /* SR: 00111 */ 117 { 1024, 12000, 1024, 12000 }, /* SR: 01000 */ 118 { 1526, 12000, 1536, 12000 }, /* SR: 01001 */ 119 { 768, 16000, 768, 16000 }, /* SR: 01010 */ 120 { 1152, 16000, 1152, 16000 }, /* SR: 01011 */ 121 { 384, 32000, 384, 32000 }, /* SR: 01100 */ 122 { 576, 32000, 576, 32000 }, /* SR: 01101 */ 123 { 128, 96000, 128, 96000 }, /* SR: 01110 */ 124 { 192, 96000, 192, 96000 }, /* SR: 01111 */ 125 { 256, 44100, 256, 44100 }, /* SR: 10000 */ 126 { 384, 44100, 384, 44100 }, /* SR: 10001 */ 127 { 256, 44100, 1408, 8018 }, /* SR: 10010 */ 128 { 384, 44100, 2112, 8018 }, /* SR: 10011 */ 129 { 1408, 8018, 256, 44100 }, /* SR: 10100 */ 130 { 2112, 8018, 384, 44100 }, /* SR: 10101 */ 131 { 1408, 8018, 1408, 8018 }, /* SR: 10110 */ 132 { 2112, 8018, 2112, 8018 }, /* SR: 10111 */ 133 { 1024, 11025, 1024, 11025 }, /* SR: 11000 */ 134 { 1536, 11025, 1536, 11025 }, /* SR: 11001 */ 135 { 512, 22050, 512, 22050 }, /* SR: 11010 */ 136 { 768, 22050, 768, 22050 }, /* SR: 11011 */ 137 { 512, 24000, 512, 24000 }, /* SR: 11100 */ 138 { 768, 24000, 768, 24000 }, /* SR: 11101 */ 139 { 128, 88200, 128, 88200 }, /* SR: 11110 */ 140 { 192, 88200, 192, 88200 }, /* SR: 11111 */ 141 }; 142 143 static void wm8750_vol_update(WM8750State *s) 144 { 145 /* FIXME: multiply all volumes by s->invol[2], s->invol[3] */ 146 147 AUD_set_volume_in(s->adc_voice[0], s->mute, 148 s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]), 149 s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1])); 150 AUD_set_volume_in(s->adc_voice[1], s->mute, 151 s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]), 152 s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1])); 153 AUD_set_volume_in(s->adc_voice[2], s->mute, 154 s->inmute[0] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[0]), 155 s->inmute[1] ? 0 : WM8750_INVOL_TRANSFORM(s->invol[1])); 156 157 /* FIXME: multiply all volumes by s->outvol[0], s->outvol[1] */ 158 159 /* Speaker: LOUT2VOL ROUT2VOL */ 160 AUD_set_volume_out(s->dac_voice[0], s->mute, 161 s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[4]), 162 s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[5])); 163 164 /* Headphone: LOUT1VOL ROUT1VOL */ 165 AUD_set_volume_out(s->dac_voice[1], s->mute, 166 s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[2]), 167 s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[3])); 168 169 /* MONOOUT: MONOVOL MONOVOL */ 170 AUD_set_volume_out(s->dac_voice[2], s->mute, 171 s->outmute[0] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[6]), 172 s->outmute[1] ? 0 : WM8750_OUTVOL_TRANSFORM(s->outvol[6])); 173 } 174 175 static void wm8750_set_format(WM8750State *s) 176 { 177 int i; 178 struct audsettings in_fmt; 179 struct audsettings out_fmt; 180 181 wm8750_out_flush(s); 182 183 if (s->in[0] && *s->in[0]) 184 AUD_set_active_in(*s->in[0], 0); 185 if (s->out[0] && *s->out[0]) 186 AUD_set_active_out(*s->out[0], 0); 187 188 for (i = 0; i < IN_PORT_N; i ++) 189 if (s->adc_voice[i]) { 190 AUD_close_in(&s->card, s->adc_voice[i]); 191 s->adc_voice[i] = NULL; 192 } 193 for (i = 0; i < OUT_PORT_N; i ++) 194 if (s->dac_voice[i]) { 195 AUD_close_out(&s->card, s->dac_voice[i]); 196 s->dac_voice[i] = NULL; 197 } 198 199 if (!s->enable) 200 return; 201 202 /* Setup input */ 203 in_fmt.endianness = 0; 204 in_fmt.nchannels = 2; 205 in_fmt.freq = s->adc_hz; 206 in_fmt.fmt = AUDIO_FORMAT_S16; 207 208 s->adc_voice[0] = AUD_open_in(&s->card, s->adc_voice[0], 209 CODEC ".input1", s, wm8750_audio_in_cb, &in_fmt); 210 s->adc_voice[1] = AUD_open_in(&s->card, s->adc_voice[1], 211 CODEC ".input2", s, wm8750_audio_in_cb, &in_fmt); 212 s->adc_voice[2] = AUD_open_in(&s->card, s->adc_voice[2], 213 CODEC ".input3", s, wm8750_audio_in_cb, &in_fmt); 214 215 /* Setup output */ 216 out_fmt.endianness = 0; 217 out_fmt.nchannels = 2; 218 out_fmt.freq = s->dac_hz; 219 out_fmt.fmt = AUDIO_FORMAT_S16; 220 221 s->dac_voice[0] = AUD_open_out(&s->card, s->dac_voice[0], 222 CODEC ".speaker", s, wm8750_audio_out_cb, &out_fmt); 223 s->dac_voice[1] = AUD_open_out(&s->card, s->dac_voice[1], 224 CODEC ".headphone", s, wm8750_audio_out_cb, &out_fmt); 225 /* MONOMIX is also in stereo for simplicity */ 226 s->dac_voice[2] = AUD_open_out(&s->card, s->dac_voice[2], 227 CODEC ".monomix", s, wm8750_audio_out_cb, &out_fmt); 228 /* no sense emulating OUT3 which is a mix of other outputs */ 229 230 wm8750_vol_update(s); 231 232 /* We should connect the left and right channels to their 233 * respective inputs/outputs but we have completely no need 234 * for mixing or combining paths to different ports, so we 235 * connect both channels to where the left channel is routed. */ 236 if (s->in[0] && *s->in[0]) 237 AUD_set_active_in(*s->in[0], 1); 238 if (s->out[0] && *s->out[0]) 239 AUD_set_active_out(*s->out[0], 1); 240 } 241 242 static void wm8750_clk_update(WM8750State *s, int ext) 243 { 244 if (s->master || !s->ext_dac_hz) 245 s->dac_hz = s->rate->dac_hz; 246 else 247 s->dac_hz = s->ext_dac_hz; 248 249 if (s->master || !s->ext_adc_hz) 250 s->adc_hz = s->rate->adc_hz; 251 else 252 s->adc_hz = s->ext_adc_hz; 253 254 if (s->master || (!s->ext_dac_hz && !s->ext_adc_hz)) { 255 if (!ext) 256 wm8750_set_format(s); 257 } else { 258 if (ext) 259 wm8750_set_format(s); 260 } 261 } 262 263 static void wm8750_reset(I2CSlave *i2c) 264 { 265 WM8750State *s = WM8750(i2c); 266 267 s->rate = &wm_rate_table[0]; 268 s->enable = 0; 269 wm8750_clk_update(s, 1); 270 s->diff[0] = 0; 271 s->diff[1] = 0; 272 s->ds = 0; 273 s->alc = 0; 274 s->in[0] = &s->adc_voice[0]; 275 s->invol[0] = 0x17; 276 s->invol[1] = 0x17; 277 s->invol[2] = 0xc3; 278 s->invol[3] = 0xc3; 279 s->out[0] = &s->dac_voice[0]; 280 s->outvol[0] = 0xff; 281 s->outvol[1] = 0xff; 282 s->outvol[2] = 0x79; 283 s->outvol[3] = 0x79; 284 s->outvol[4] = 0x79; 285 s->outvol[5] = 0x79; 286 s->outvol[6] = 0x79; 287 s->inmute[0] = 0; 288 s->inmute[1] = 0; 289 s->outmute[0] = 0; 290 s->outmute[1] = 0; 291 s->mute = 1; 292 s->path[0] = 0; 293 s->path[1] = 0; 294 s->path[2] = 0; 295 s->path[3] = 0; 296 s->mpath[0] = 0; 297 s->mpath[1] = 0; 298 s->format = 0x0a; 299 s->idx_in = sizeof(s->data_in); 300 s->req_in = 0; 301 s->idx_out = 0; 302 s->req_out = 0; 303 wm8750_vol_update(s); 304 s->i2c_len = 0; 305 } 306 307 static int wm8750_event(I2CSlave *i2c, enum i2c_event event) 308 { 309 WM8750State *s = WM8750(i2c); 310 311 switch (event) { 312 case I2C_START_SEND: 313 s->i2c_len = 0; 314 break; 315 case I2C_FINISH: 316 #ifdef VERBOSE 317 if (s->i2c_len < 2) 318 printf("%s: message too short (%i bytes)\n", 319 __func__, s->i2c_len); 320 #endif 321 break; 322 default: 323 break; 324 } 325 326 return 0; 327 } 328 329 #define WM8750_LINVOL 0x00 330 #define WM8750_RINVOL 0x01 331 #define WM8750_LOUT1V 0x02 332 #define WM8750_ROUT1V 0x03 333 #define WM8750_ADCDAC 0x05 334 #define WM8750_IFACE 0x07 335 #define WM8750_SRATE 0x08 336 #define WM8750_LDAC 0x0a 337 #define WM8750_RDAC 0x0b 338 #define WM8750_BASS 0x0c 339 #define WM8750_TREBLE 0x0d 340 #define WM8750_RESET 0x0f 341 #define WM8750_3D 0x10 342 #define WM8750_ALC1 0x11 343 #define WM8750_ALC2 0x12 344 #define WM8750_ALC3 0x13 345 #define WM8750_NGATE 0x14 346 #define WM8750_LADC 0x15 347 #define WM8750_RADC 0x16 348 #define WM8750_ADCTL1 0x17 349 #define WM8750_ADCTL2 0x18 350 #define WM8750_PWR1 0x19 351 #define WM8750_PWR2 0x1a 352 #define WM8750_ADCTL3 0x1b 353 #define WM8750_ADCIN 0x1f 354 #define WM8750_LADCIN 0x20 355 #define WM8750_RADCIN 0x21 356 #define WM8750_LOUTM1 0x22 357 #define WM8750_LOUTM2 0x23 358 #define WM8750_ROUTM1 0x24 359 #define WM8750_ROUTM2 0x25 360 #define WM8750_MOUTM1 0x26 361 #define WM8750_MOUTM2 0x27 362 #define WM8750_LOUT2V 0x28 363 #define WM8750_ROUT2V 0x29 364 #define WM8750_MOUTV 0x2a 365 366 static int wm8750_tx(I2CSlave *i2c, uint8_t data) 367 { 368 WM8750State *s = WM8750(i2c); 369 uint8_t cmd; 370 uint16_t value; 371 372 if (s->i2c_len >= 2) { 373 #ifdef VERBOSE 374 printf("%s: long message (%i bytes)\n", __func__, s->i2c_len); 375 #endif 376 return 1; 377 } 378 s->i2c_data[s->i2c_len ++] = data; 379 if (s->i2c_len != 2) 380 return 0; 381 382 cmd = s->i2c_data[0] >> 1; 383 value = ((s->i2c_data[0] << 8) | s->i2c_data[1]) & 0x1ff; 384 385 switch (cmd) { 386 case WM8750_LADCIN: /* ADC Signal Path Control (Left) */ 387 s->diff[0] = (((value >> 6) & 3) == 3); /* LINSEL */ 388 if (s->diff[0]) 389 s->in[0] = &s->adc_voice[0 + s->ds * 1]; 390 else 391 s->in[0] = &s->adc_voice[((value >> 6) & 3) * 1 + 0]; 392 break; 393 394 case WM8750_RADCIN: /* ADC Signal Path Control (Right) */ 395 s->diff[1] = (((value >> 6) & 3) == 3); /* RINSEL */ 396 if (s->diff[1]) 397 s->in[1] = &s->adc_voice[0 + s->ds * 1]; 398 else 399 s->in[1] = &s->adc_voice[((value >> 6) & 3) * 1 + 0]; 400 break; 401 402 case WM8750_ADCIN: /* ADC Input Mode */ 403 s->ds = (value >> 8) & 1; /* DS */ 404 if (s->diff[0]) 405 s->in[0] = &s->adc_voice[0 + s->ds * 1]; 406 if (s->diff[1]) 407 s->in[1] = &s->adc_voice[0 + s->ds * 1]; 408 s->monomix[0] = (value >> 6) & 3; /* MONOMIX */ 409 break; 410 411 case WM8750_ADCTL1: /* Additional Control (1) */ 412 s->monomix[1] = (value >> 1) & 1; /* DMONOMIX */ 413 break; 414 415 case WM8750_PWR1: /* Power Management (1) */ 416 s->enable = ((value >> 6) & 7) == 3; /* VMIDSEL, VREF */ 417 wm8750_set_format(s); 418 break; 419 420 case WM8750_LINVOL: /* Left Channel PGA */ 421 s->invol[0] = value & 0x3f; /* LINVOL */ 422 s->inmute[0] = (value >> 7) & 1; /* LINMUTE */ 423 wm8750_vol_update(s); 424 break; 425 426 case WM8750_RINVOL: /* Right Channel PGA */ 427 s->invol[1] = value & 0x3f; /* RINVOL */ 428 s->inmute[1] = (value >> 7) & 1; /* RINMUTE */ 429 wm8750_vol_update(s); 430 break; 431 432 case WM8750_ADCDAC: /* ADC and DAC Control */ 433 s->pol = (value >> 5) & 3; /* ADCPOL */ 434 s->mute = (value >> 3) & 1; /* DACMU */ 435 wm8750_vol_update(s); 436 break; 437 438 case WM8750_ADCTL3: /* Additional Control (3) */ 439 break; 440 441 case WM8750_LADC: /* Left ADC Digital Volume */ 442 s->invol[2] = value & 0xff; /* LADCVOL */ 443 wm8750_vol_update(s); 444 break; 445 446 case WM8750_RADC: /* Right ADC Digital Volume */ 447 s->invol[3] = value & 0xff; /* RADCVOL */ 448 wm8750_vol_update(s); 449 break; 450 451 case WM8750_ALC1: /* ALC Control (1) */ 452 s->alc = (value >> 7) & 3; /* ALCSEL */ 453 break; 454 455 case WM8750_NGATE: /* Noise Gate Control */ 456 case WM8750_3D: /* 3D enhance */ 457 break; 458 459 case WM8750_LDAC: /* Left Channel Digital Volume */ 460 s->outvol[0] = value & 0xff; /* LDACVOL */ 461 wm8750_vol_update(s); 462 break; 463 464 case WM8750_RDAC: /* Right Channel Digital Volume */ 465 s->outvol[1] = value & 0xff; /* RDACVOL */ 466 wm8750_vol_update(s); 467 break; 468 469 case WM8750_BASS: /* Bass Control */ 470 break; 471 472 case WM8750_LOUTM1: /* Left Mixer Control (1) */ 473 s->path[0] = (value >> 8) & 1; /* LD2LO */ 474 /* TODO: mute/unmute respective paths */ 475 wm8750_vol_update(s); 476 break; 477 478 case WM8750_LOUTM2: /* Left Mixer Control (2) */ 479 s->path[1] = (value >> 8) & 1; /* RD2LO */ 480 /* TODO: mute/unmute respective paths */ 481 wm8750_vol_update(s); 482 break; 483 484 case WM8750_ROUTM1: /* Right Mixer Control (1) */ 485 s->path[2] = (value >> 8) & 1; /* LD2RO */ 486 /* TODO: mute/unmute respective paths */ 487 wm8750_vol_update(s); 488 break; 489 490 case WM8750_ROUTM2: /* Right Mixer Control (2) */ 491 s->path[3] = (value >> 8) & 1; /* RD2RO */ 492 /* TODO: mute/unmute respective paths */ 493 wm8750_vol_update(s); 494 break; 495 496 case WM8750_MOUTM1: /* Mono Mixer Control (1) */ 497 s->mpath[0] = (value >> 8) & 1; /* LD2MO */ 498 /* TODO: mute/unmute respective paths */ 499 wm8750_vol_update(s); 500 break; 501 502 case WM8750_MOUTM2: /* Mono Mixer Control (2) */ 503 s->mpath[1] = (value >> 8) & 1; /* RD2MO */ 504 /* TODO: mute/unmute respective paths */ 505 wm8750_vol_update(s); 506 break; 507 508 case WM8750_LOUT1V: /* LOUT1 Volume */ 509 s->outvol[2] = value & 0x7f; /* LOUT1VOL */ 510 wm8750_vol_update(s); 511 break; 512 513 case WM8750_LOUT2V: /* LOUT2 Volume */ 514 s->outvol[4] = value & 0x7f; /* LOUT2VOL */ 515 wm8750_vol_update(s); 516 break; 517 518 case WM8750_ROUT1V: /* ROUT1 Volume */ 519 s->outvol[3] = value & 0x7f; /* ROUT1VOL */ 520 wm8750_vol_update(s); 521 break; 522 523 case WM8750_ROUT2V: /* ROUT2 Volume */ 524 s->outvol[5] = value & 0x7f; /* ROUT2VOL */ 525 wm8750_vol_update(s); 526 break; 527 528 case WM8750_MOUTV: /* MONOOUT Volume */ 529 s->outvol[6] = value & 0x7f; /* MONOOUTVOL */ 530 wm8750_vol_update(s); 531 break; 532 533 case WM8750_ADCTL2: /* Additional Control (2) */ 534 break; 535 536 case WM8750_PWR2: /* Power Management (2) */ 537 s->power = value & 0x7e; 538 /* TODO: mute/unmute respective paths */ 539 wm8750_vol_update(s); 540 break; 541 542 case WM8750_IFACE: /* Digital Audio Interface Format */ 543 s->format = value; 544 s->master = (value >> 6) & 1; /* MS */ 545 wm8750_clk_update(s, s->master); 546 break; 547 548 case WM8750_SRATE: /* Clocking and Sample Rate Control */ 549 s->rate = &wm_rate_table[(value >> 1) & 0x1f]; 550 wm8750_clk_update(s, 0); 551 break; 552 553 case WM8750_RESET: /* Reset */ 554 wm8750_reset(I2C_SLAVE(s)); 555 break; 556 557 #ifdef VERBOSE 558 default: 559 printf("%s: unknown register %02x\n", __func__, cmd); 560 #endif 561 } 562 563 return 0; 564 } 565 566 static uint8_t wm8750_rx(I2CSlave *i2c) 567 { 568 return 0x00; 569 } 570 571 static int wm8750_pre_save(void *opaque) 572 { 573 WM8750State *s = opaque; 574 575 s->rate_vmstate = s->rate - wm_rate_table; 576 577 return 0; 578 } 579 580 static int wm8750_post_load(void *opaque, int version_id) 581 { 582 WM8750State *s = opaque; 583 584 s->rate = &wm_rate_table[s->rate_vmstate & 0x1f]; 585 return 0; 586 } 587 588 static const VMStateDescription vmstate_wm8750 = { 589 .name = CODEC, 590 .version_id = 0, 591 .minimum_version_id = 0, 592 .pre_save = wm8750_pre_save, 593 .post_load = wm8750_post_load, 594 .fields = (VMStateField[]) { 595 VMSTATE_UINT8_ARRAY(i2c_data, WM8750State, 2), 596 VMSTATE_INT32(i2c_len, WM8750State), 597 VMSTATE_INT32(enable, WM8750State), 598 VMSTATE_INT32(idx_in, WM8750State), 599 VMSTATE_INT32(req_in, WM8750State), 600 VMSTATE_INT32(idx_out, WM8750State), 601 VMSTATE_INT32(req_out, WM8750State), 602 VMSTATE_UINT8_ARRAY(outvol, WM8750State, 7), 603 VMSTATE_UINT8_ARRAY(outmute, WM8750State, 2), 604 VMSTATE_UINT8_ARRAY(invol, WM8750State, 4), 605 VMSTATE_UINT8_ARRAY(inmute, WM8750State, 2), 606 VMSTATE_UINT8_ARRAY(diff, WM8750State, 2), 607 VMSTATE_UINT8(pol, WM8750State), 608 VMSTATE_UINT8(ds, WM8750State), 609 VMSTATE_UINT8_ARRAY(monomix, WM8750State, 2), 610 VMSTATE_UINT8(alc, WM8750State), 611 VMSTATE_UINT8(mute, WM8750State), 612 VMSTATE_UINT8_ARRAY(path, WM8750State, 4), 613 VMSTATE_UINT8_ARRAY(mpath, WM8750State, 2), 614 VMSTATE_UINT8(format, WM8750State), 615 VMSTATE_UINT8(power, WM8750State), 616 VMSTATE_UINT8(rate_vmstate, WM8750State), 617 VMSTATE_I2C_SLAVE(parent_obj, WM8750State), 618 VMSTATE_END_OF_LIST() 619 } 620 }; 621 622 static void wm8750_realize(DeviceState *dev, Error **errp) 623 { 624 WM8750State *s = WM8750(dev); 625 626 AUD_register_card(CODEC, &s->card); 627 wm8750_reset(I2C_SLAVE(s)); 628 } 629 630 #if 0 631 static void wm8750_fini(I2CSlave *i2c) 632 { 633 WM8750State *s = WM8750(i2c); 634 635 wm8750_reset(I2C_SLAVE(s)); 636 AUD_remove_card(&s->card); 637 g_free(s); 638 } 639 #endif 640 641 void wm8750_data_req_set(DeviceState *dev, data_req_cb *data_req, void *opaque) 642 { 643 WM8750State *s = WM8750(dev); 644 645 s->data_req = data_req; 646 s->opaque = opaque; 647 } 648 649 void wm8750_dac_dat(void *opaque, uint32_t sample) 650 { 651 WM8750State *s = (WM8750State *) opaque; 652 653 *(uint32_t *) &s->data_out[s->idx_out] = sample; 654 s->req_out -= 4; 655 s->idx_out += 4; 656 if (s->idx_out >= sizeof(s->data_out) || s->req_out <= 0) 657 wm8750_out_flush(s); 658 } 659 660 void *wm8750_dac_buffer(void *opaque, int samples) 661 { 662 WM8750State *s = (WM8750State *) opaque; 663 /* XXX: Should check if there are <i>samples</i> free samples available */ 664 void *ret = s->data_out + s->idx_out; 665 666 s->idx_out += samples << 2; 667 s->req_out -= samples << 2; 668 return ret; 669 } 670 671 void wm8750_dac_commit(void *opaque) 672 { 673 WM8750State *s = (WM8750State *) opaque; 674 675 wm8750_out_flush(s); 676 } 677 678 uint32_t wm8750_adc_dat(void *opaque) 679 { 680 WM8750State *s = (WM8750State *) opaque; 681 uint32_t *data; 682 683 if (s->idx_in >= sizeof(s->data_in)) { 684 wm8750_in_load(s); 685 if (s->idx_in >= sizeof(s->data_in)) { 686 return 0x80008000; /* silence in AUDIO_FORMAT_S16 sample format */ 687 } 688 } 689 690 data = (uint32_t *) &s->data_in[s->idx_in]; 691 s->req_in -= 4; 692 s->idx_in += 4; 693 return *data; 694 } 695 696 void wm8750_set_bclk_in(void *opaque, int new_hz) 697 { 698 WM8750State *s = (WM8750State *) opaque; 699 700 s->ext_adc_hz = new_hz; 701 s->ext_dac_hz = new_hz; 702 wm8750_clk_update(s, 1); 703 } 704 705 static Property wm8750_properties[] = { 706 DEFINE_AUDIO_PROPERTIES(WM8750State, card), 707 DEFINE_PROP_END_OF_LIST(), 708 }; 709 710 static void wm8750_class_init(ObjectClass *klass, void *data) 711 { 712 DeviceClass *dc = DEVICE_CLASS(klass); 713 I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass); 714 715 dc->realize = wm8750_realize; 716 sc->event = wm8750_event; 717 sc->recv = wm8750_rx; 718 sc->send = wm8750_tx; 719 dc->vmsd = &vmstate_wm8750; 720 dc->props = wm8750_properties; 721 } 722 723 static const TypeInfo wm8750_info = { 724 .name = TYPE_WM8750, 725 .parent = TYPE_I2C_SLAVE, 726 .instance_size = sizeof(WM8750State), 727 .class_init = wm8750_class_init, 728 }; 729 730 static void wm8750_register_types(void) 731 { 732 type_register_static(&wm8750_info); 733 } 734 735 type_init(wm8750_register_types) 736