1 /*- 2 * Copyright (c) 2014-2016 Jared D. McNeill <jmcneill@invisible.ca> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 19 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 21 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 22 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 /* 30 * Allwinner A10/A20 Audio Codec 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/bus.h> 39 #include <sys/rman.h> 40 #include <sys/condvar.h> 41 #include <sys/kernel.h> 42 #include <sys/module.h> 43 #include <sys/gpio.h> 44 45 #include <machine/bus.h> 46 47 #include <dev/sound/pcm/sound.h> 48 #include <dev/sound/chip.h> 49 50 #include <dev/ofw/ofw_bus.h> 51 #include <dev/ofw/ofw_bus_subr.h> 52 53 #include <arm/allwinner/a10_clk.h> 54 55 #include "sunxi_dma_if.h" 56 #include "mixer_if.h" 57 #include "gpio_if.h" 58 59 #define TX_TRIG_LEVEL 0xf 60 #define RX_TRIG_LEVEL 0x7 61 #define DRQ_CLR_CNT 0x3 62 63 #define AC_DAC_DPC 0x00 64 #define DAC_DPC_EN_DA 0x80000000 65 #define AC_DAC_FIFOC 0x04 66 #define DAC_FIFOC_FS_SHIFT 29 67 #define DAC_FIFOC_FS_MASK (7U << DAC_FIFOC_FS_SHIFT) 68 #define DAC_FS_48KHZ 0 69 #define DAC_FS_32KHZ 1 70 #define DAC_FS_24KHZ 2 71 #define DAC_FS_16KHZ 3 72 #define DAC_FS_12KHZ 4 73 #define DAC_FS_8KHZ 5 74 #define DAC_FS_192KHZ 6 75 #define DAC_FS_96KHZ 7 76 #define DAC_FIFOC_FIFO_MODE_SHIFT 24 77 #define DAC_FIFOC_FIFO_MODE_MASK (3U << DAC_FIFOC_FIFO_MODE_SHIFT) 78 #define FIFO_MODE_24_31_8 0 79 #define FIFO_MODE_16_31_16 0 80 #define FIFO_MODE_16_15_0 1 81 #define DAC_FIFOC_DRQ_CLR_CNT_SHIFT 21 82 #define DAC_FIFOC_DRQ_CLR_CNT_MASK (3U << DAC_FIFOC_DRQ_CLR_CNT_SHIFT) 83 #define DAC_FIFOC_TX_TRIG_LEVEL_SHIFT 8 84 #define DAC_FIFOC_TX_TRIG_LEVEL_MASK (0x7f << DAC_FIFOC_TX_TRIG_LEVEL_SHIFT) 85 #define DAC_FIFOC_MONO_EN (1U << 6) 86 #define DAC_FIFOC_TX_BITS (1U << 5) 87 #define DAC_FIFOC_DRQ_EN (1U << 4) 88 #define DAC_FIFOC_FIFO_FLUSH (1U << 0) 89 #define AC_DAC_FIFOS 0x08 90 #define AC_DAC_TXDATA 0x0c 91 #define AC_DAC_ACTL 0x10 92 #define DAC_ACTL_DACAREN (1U << 31) 93 #define DAC_ACTL_DACALEN (1U << 30) 94 #define DAC_ACTL_MIXEN (1U << 29) 95 #define DAC_ACTL_DACPAS (1U << 8) 96 #define DAC_ACTL_PAMUTE (1U << 6) 97 #define DAC_ACTL_PAVOL_SHIFT 0 98 #define DAC_ACTL_PAVOL_MASK (0x3f << DAC_ACTL_PAVOL_SHIFT) 99 #define AC_ADC_FIFOC 0x1c 100 #define ADC_FIFOC_FS_SHIFT 29 101 #define ADC_FIFOC_FS_MASK (7U << ADC_FIFOC_FS_SHIFT) 102 #define ADC_FS_48KHZ 0 103 #define ADC_FIFOC_EN_AD (1U << 28) 104 #define ADC_FIFOC_RX_FIFO_MODE (1U << 24) 105 #define ADC_FIFOC_RX_TRIG_LEVEL_SHIFT 8 106 #define ADC_FIFOC_RX_TRIG_LEVEL_MASK (0x1f << ADC_FIFOC_RX_TRIG_LEVEL_SHIFT) 107 #define ADC_FIFOC_MONO_EN (1U << 7) 108 #define ADC_FIFOC_RX_BITS (1U << 6) 109 #define ADC_FIFOC_DRQ_EN (1U << 4) 110 #define ADC_FIFOC_FIFO_FLUSH (1U << 1) 111 #define AC_ADC_FIFOS 0x20 112 #define AC_ADC_RXDATA 0x24 113 #define AC_ADC_ACTL 0x28 114 #define ADC_ACTL_ADCREN (1U << 31) 115 #define ADC_ACTL_ADCLEN (1U << 30) 116 #define ADC_ACTL_PREG1EN (1U << 29) 117 #define ADC_ACTL_PREG2EN (1U << 28) 118 #define ADC_ACTL_VMICEN (1U << 27) 119 #define ADC_ACTL_ADCG_SHIFT 20 120 #define ADC_ACTL_ADCG_MASK (7U << ADC_ACTL_ADCG_SHIFT) 121 #define ADC_ACTL_ADCIS_SHIFT 17 122 #define ADC_ACTL_ADCIS_MASK (7U << ADC_ACTL_ADCIS_SHIFT) 123 #define ADC_IS_LINEIN 0 124 #define ADC_IS_FMIN 1 125 #define ADC_IS_MIC1 2 126 #define ADC_IS_MIC2 3 127 #define ADC_IS_MIC1_L_MIC2_R 4 128 #define ADC_IS_MIC1_LR_MIC2_LR 5 129 #define ADC_IS_OMIX 6 130 #define ADC_IS_LINEIN_L_MIC1_R 7 131 #define ADC_ACTL_LNRDF (1U << 16) 132 #define ADC_ACTL_LNPREG_SHIFT 13 133 #define ADC_ACTL_LNPREG_MASK (7U << ADC_ACTL_LNPREG_SHIFT) 134 #define ADC_ACTL_PA_EN (1U << 4) 135 #define ADC_ACTL_DDE (1U << 3) 136 #define AC_DAC_CNT 0x30 137 #define AC_ADC_CNT 0x34 138 139 static uint32_t a10codec_fmt[] = { 140 SND_FORMAT(AFMT_S16_LE, 1, 0), 141 SND_FORMAT(AFMT_S16_LE, 2, 0), 142 0 143 }; 144 145 static struct pcmchan_caps a10codec_pcaps = { 8000, 192000, a10codec_fmt, 0 }; 146 static struct pcmchan_caps a10codec_rcaps = { 8000, 48000, a10codec_fmt, 0 }; 147 148 struct a10codec_info; 149 150 struct a10codec_chinfo { 151 struct snd_dbuf *buffer; 152 struct pcm_channel *channel; 153 struct a10codec_info *parent; 154 bus_dmamap_t dmamap; 155 void *dmaaddr; 156 bus_addr_t physaddr; 157 bus_size_t fifo; 158 device_t dmac; 159 void *dmachan; 160 161 int dir; 162 int run; 163 uint32_t pos; 164 uint32_t format; 165 uint32_t blocksize; 166 uint32_t speed; 167 }; 168 169 struct a10codec_info { 170 device_t dev; 171 struct resource *res[2]; 172 struct mtx *lock; 173 bus_dma_tag_t dmat; 174 unsigned dmasize; 175 void *ih; 176 177 unsigned drqtype_codec; 178 unsigned drqtype_sdram; 179 180 struct a10codec_chinfo play; 181 struct a10codec_chinfo rec; 182 }; 183 184 static struct resource_spec a10codec_spec[] = { 185 { SYS_RES_MEMORY, 0, RF_ACTIVE }, 186 { SYS_RES_IRQ, 0, RF_ACTIVE }, 187 { -1, 0 } 188 }; 189 190 #define CODEC_READ(sc, reg) bus_read_4((sc)->res[0], (reg)) 191 #define CODEC_WRITE(sc, reg, val) bus_write_4((sc)->res[0], (reg), (val)) 192 193 /* 194 * Mixer interface 195 */ 196 197 static int 198 a10codec_mixer_init(struct snd_mixer *m) 199 { 200 struct a10codec_info *sc = mix_getdevinfo(m); 201 pcell_t prop[4]; 202 phandle_t node; 203 device_t gpio; 204 uint32_t val; 205 ssize_t len; 206 int pin; 207 208 mix_setdevs(m, SOUND_MASK_VOLUME | SOUND_MASK_LINE | SOUND_MASK_RECLEV); 209 mix_setrecdevs(m, SOUND_MASK_LINE | SOUND_MASK_LINE1 | SOUND_MASK_MIC); 210 211 /* Unmute input source to PA */ 212 val = CODEC_READ(sc, AC_DAC_ACTL); 213 val |= DAC_ACTL_PAMUTE; 214 CODEC_WRITE(sc, AC_DAC_ACTL, val); 215 216 /* Enable PA */ 217 val = CODEC_READ(sc, AC_ADC_ACTL); 218 val |= ADC_ACTL_PA_EN; 219 CODEC_WRITE(sc, AC_ADC_ACTL, val); 220 221 /* Unmute PA */ 222 node = ofw_bus_get_node(sc->dev); 223 len = OF_getencprop(node, "allwinner,pa-gpios", prop, sizeof(prop)); 224 if (len > 0 && (len / sizeof(prop[0])) == 4) { 225 gpio = OF_device_from_xref(prop[0]); 226 if (gpio != NULL) { 227 pin = prop[1] * 32 + prop[2]; 228 GPIO_PIN_SETFLAGS(gpio, pin, GPIO_PIN_OUTPUT); 229 GPIO_PIN_SET(gpio, pin, GPIO_PIN_LOW); 230 } 231 } 232 233 return (0); 234 } 235 236 static const struct a10codec_mixer { 237 unsigned reg; 238 unsigned mask; 239 unsigned shift; 240 } a10codec_mixers[SOUND_MIXER_NRDEVICES] = { 241 [SOUND_MIXER_VOLUME] = { AC_DAC_ACTL, DAC_ACTL_PAVOL_MASK, 242 DAC_ACTL_PAVOL_SHIFT }, 243 [SOUND_MIXER_LINE] = { AC_ADC_ACTL, ADC_ACTL_LNPREG_MASK, 244 ADC_ACTL_LNPREG_SHIFT }, 245 [SOUND_MIXER_RECLEV] = { AC_ADC_ACTL, ADC_ACTL_ADCG_MASK, 246 ADC_ACTL_ADCG_SHIFT }, 247 }; 248 249 static int 250 a10codec_mixer_set(struct snd_mixer *m, unsigned dev, unsigned left, 251 unsigned right) 252 { 253 struct a10codec_info *sc = mix_getdevinfo(m); 254 uint32_t val; 255 unsigned nvol, max; 256 257 max = a10codec_mixers[dev].mask >> a10codec_mixers[dev].shift; 258 nvol = (left * max) / 100; 259 260 val = CODEC_READ(sc, a10codec_mixers[dev].reg); 261 val &= ~a10codec_mixers[dev].mask; 262 val |= (nvol << a10codec_mixers[dev].shift); 263 CODEC_WRITE(sc, a10codec_mixers[dev].reg, val); 264 265 left = right = (left * 100) / max; 266 return (left | (right << 8)); 267 } 268 269 static uint32_t 270 a10codec_mixer_setrecsrc(struct snd_mixer *m, uint32_t src) 271 { 272 struct a10codec_info *sc = mix_getdevinfo(m); 273 uint32_t val; 274 275 val = CODEC_READ(sc, AC_ADC_ACTL); 276 277 switch (src) { 278 case SOUND_MASK_LINE: /* line-in */ 279 val &= ~ADC_ACTL_ADCIS_MASK; 280 val |= (ADC_IS_LINEIN << ADC_ACTL_ADCIS_SHIFT); 281 break; 282 case SOUND_MASK_MIC: /* MIC1 */ 283 val &= ~ADC_ACTL_ADCIS_MASK; 284 val |= (ADC_IS_MIC1 << ADC_ACTL_ADCIS_SHIFT); 285 break; 286 case SOUND_MASK_LINE1: /* MIC2 */ 287 val &= ~ADC_ACTL_ADCIS_MASK; 288 val |= (ADC_IS_MIC2 << ADC_ACTL_ADCIS_SHIFT); 289 break; 290 default: 291 break; 292 } 293 294 CODEC_WRITE(sc, AC_ADC_ACTL, val); 295 296 switch ((val & ADC_ACTL_ADCIS_MASK) >> ADC_ACTL_ADCIS_SHIFT) { 297 case ADC_IS_LINEIN: 298 return (SOUND_MASK_LINE); 299 case ADC_IS_MIC1: 300 return (SOUND_MASK_MIC); 301 case ADC_IS_MIC2: 302 return (SOUND_MASK_LINE1); 303 default: 304 return (0); 305 } 306 } 307 308 static kobj_method_t a10codec_mixer_methods[] = { 309 KOBJMETHOD(mixer_init, a10codec_mixer_init), 310 KOBJMETHOD(mixer_set, a10codec_mixer_set), 311 KOBJMETHOD(mixer_setrecsrc, a10codec_mixer_setrecsrc), 312 KOBJMETHOD_END 313 }; 314 MIXER_DECLARE(a10codec_mixer); 315 316 317 /* 318 * Channel interface 319 */ 320 321 static void 322 a10codec_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 323 { 324 struct a10codec_chinfo *ch = arg; 325 326 if (error != 0) 327 return; 328 329 ch->physaddr = segs[0].ds_addr; 330 } 331 332 static void 333 a10codec_transfer(struct a10codec_chinfo *ch) 334 { 335 bus_addr_t src, dst; 336 int error; 337 338 if (ch->dir == PCMDIR_PLAY) { 339 src = ch->physaddr + ch->pos; 340 dst = ch->fifo; 341 } else { 342 src = ch->fifo; 343 dst = ch->physaddr + ch->pos; 344 } 345 346 error = SUNXI_DMA_TRANSFER(ch->dmac, ch->dmachan, src, dst, 347 ch->blocksize); 348 if (error) { 349 ch->run = 0; 350 device_printf(ch->parent->dev, "DMA transfer failed: %d\n", 351 error); 352 } 353 } 354 355 static void 356 a10codec_dmaconfig(struct a10codec_chinfo *ch) 357 { 358 struct a10codec_info *sc = ch->parent; 359 struct sunxi_dma_config conf; 360 361 memset(&conf, 0, sizeof(conf)); 362 conf.src_width = conf.dst_width = 16; 363 conf.src_burst_len = conf.dst_burst_len = 4; 364 365 if (ch->dir == PCMDIR_PLAY) { 366 conf.dst_noincr = true; 367 conf.src_drqtype = sc->drqtype_sdram; 368 conf.dst_drqtype = sc->drqtype_codec; 369 } else { 370 conf.src_noincr = true; 371 conf.src_drqtype = sc->drqtype_codec; 372 conf.dst_drqtype = sc->drqtype_sdram; 373 } 374 375 SUNXI_DMA_SET_CONFIG(ch->dmac, ch->dmachan, &conf); 376 } 377 378 static void 379 a10codec_dmaintr(void *priv) 380 { 381 struct a10codec_chinfo *ch = priv; 382 unsigned bufsize; 383 384 bufsize = sndbuf_getsize(ch->buffer); 385 386 ch->pos += ch->blocksize; 387 if (ch->pos >= bufsize) 388 ch->pos -= bufsize; 389 390 if (ch->run) { 391 chn_intr(ch->channel); 392 a10codec_transfer(ch); 393 } 394 } 395 396 static unsigned 397 a10codec_fs(struct a10codec_chinfo *ch) 398 { 399 switch (ch->speed) { 400 case 48000: 401 return (DAC_FS_48KHZ); 402 case 24000: 403 return (DAC_FS_24KHZ); 404 case 12000: 405 return (DAC_FS_12KHZ); 406 case 192000: 407 return (DAC_FS_192KHZ); 408 case 32000: 409 return (DAC_FS_32KHZ); 410 case 16000: 411 return (DAC_FS_16KHZ); 412 case 8000: 413 return (DAC_FS_8KHZ); 414 case 96000: 415 return (DAC_FS_96KHZ); 416 default: 417 return (DAC_FS_48KHZ); 418 } 419 } 420 421 static void 422 a10codec_start(struct a10codec_chinfo *ch) 423 { 424 struct a10codec_info *sc = ch->parent; 425 uint32_t val; 426 427 ch->pos = 0; 428 429 if (ch->dir == PCMDIR_PLAY) { 430 /* Flush DAC FIFO */ 431 CODEC_WRITE(sc, AC_DAC_FIFOC, DAC_FIFOC_FIFO_FLUSH); 432 433 /* Clear DAC FIFO status */ 434 CODEC_WRITE(sc, AC_DAC_FIFOS, CODEC_READ(sc, AC_DAC_FIFOS)); 435 436 /* Enable DAC analog left/right channels and output mixer */ 437 val = CODEC_READ(sc, AC_DAC_ACTL); 438 val |= DAC_ACTL_DACAREN; 439 val |= DAC_ACTL_DACALEN; 440 val |= DAC_ACTL_DACPAS; 441 CODEC_WRITE(sc, AC_DAC_ACTL, val); 442 443 /* Configure DAC DMA channel */ 444 a10codec_dmaconfig(ch); 445 446 /* Configure DAC FIFO */ 447 CODEC_WRITE(sc, AC_DAC_FIFOC, 448 (AFMT_CHANNEL(ch->format) == 1 ? DAC_FIFOC_MONO_EN : 0) | 449 (a10codec_fs(ch) << DAC_FIFOC_FS_SHIFT) | 450 (FIFO_MODE_16_15_0 << DAC_FIFOC_FIFO_MODE_SHIFT) | 451 (DRQ_CLR_CNT << DAC_FIFOC_DRQ_CLR_CNT_SHIFT) | 452 (TX_TRIG_LEVEL << DAC_FIFOC_TX_TRIG_LEVEL_SHIFT)); 453 454 /* Enable DAC DRQ */ 455 val = CODEC_READ(sc, AC_DAC_FIFOC); 456 val |= DAC_FIFOC_DRQ_EN; 457 CODEC_WRITE(sc, AC_DAC_FIFOC, val); 458 } else { 459 /* Flush ADC FIFO */ 460 CODEC_WRITE(sc, AC_ADC_FIFOC, ADC_FIFOC_FIFO_FLUSH); 461 462 /* Clear ADC FIFO status */ 463 CODEC_WRITE(sc, AC_ADC_FIFOS, CODEC_READ(sc, AC_ADC_FIFOS)); 464 465 /* Enable ADC analog left/right channels, MIC1 preamp, 466 * and VMIC pin voltage 467 */ 468 val = CODEC_READ(sc, AC_ADC_ACTL); 469 val |= ADC_ACTL_ADCREN; 470 val |= ADC_ACTL_ADCLEN; 471 val |= ADC_ACTL_PREG1EN; 472 val |= ADC_ACTL_VMICEN; 473 CODEC_WRITE(sc, AC_ADC_ACTL, val); 474 475 /* Configure ADC DMA channel */ 476 a10codec_dmaconfig(ch); 477 478 /* Configure ADC FIFO */ 479 CODEC_WRITE(sc, AC_ADC_FIFOC, 480 ADC_FIFOC_EN_AD | 481 ADC_FIFOC_RX_FIFO_MODE | 482 (AFMT_CHANNEL(ch->format) == 1 ? ADC_FIFOC_MONO_EN : 0) | 483 (a10codec_fs(ch) << ADC_FIFOC_FS_SHIFT) | 484 (RX_TRIG_LEVEL << ADC_FIFOC_RX_TRIG_LEVEL_SHIFT)); 485 486 /* Enable ADC DRQ */ 487 val = CODEC_READ(sc, AC_ADC_FIFOC); 488 val |= ADC_FIFOC_DRQ_EN; 489 CODEC_WRITE(sc, AC_ADC_FIFOC, val); 490 } 491 492 /* Start DMA transfer */ 493 a10codec_transfer(ch); 494 } 495 496 static void 497 a10codec_stop(struct a10codec_chinfo *ch) 498 { 499 struct a10codec_info *sc = ch->parent; 500 uint32_t val; 501 502 /* Disable DMA channel */ 503 SUNXI_DMA_HALT(ch->dmac, ch->dmachan); 504 505 if (ch->dir == PCMDIR_PLAY) { 506 /* Disable DAC analog left/right channels and output mixer */ 507 val = CODEC_READ(sc, AC_DAC_ACTL); 508 val &= ~DAC_ACTL_DACAREN; 509 val &= ~DAC_ACTL_DACALEN; 510 val &= ~DAC_ACTL_DACPAS; 511 CODEC_WRITE(sc, AC_DAC_ACTL, val); 512 513 /* Disable DAC DRQ */ 514 CODEC_WRITE(sc, AC_DAC_FIFOC, 0); 515 } else { 516 /* Disable ADC analog left/right channels, MIC1 preamp, 517 * and VMIC pin voltage 518 */ 519 val = CODEC_READ(sc, AC_ADC_ACTL); 520 val &= ~ADC_ACTL_ADCREN; 521 val &= ~ADC_ACTL_ADCLEN; 522 val &= ~ADC_ACTL_PREG1EN; 523 val &= ~ADC_ACTL_VMICEN; 524 CODEC_WRITE(sc, AC_ADC_ACTL, val); 525 526 /* Disable ADC DRQ */ 527 CODEC_WRITE(sc, AC_ADC_FIFOC, 0); 528 } 529 } 530 531 static void * 532 a10codec_chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, 533 struct pcm_channel *c, int dir) 534 { 535 struct a10codec_info *sc = devinfo; 536 struct a10codec_chinfo *ch = dir == PCMDIR_PLAY ? &sc->play : &sc->rec; 537 int error; 538 539 ch->parent = sc; 540 ch->channel = c; 541 ch->buffer = b; 542 ch->dir = dir; 543 ch->fifo = rman_get_start(sc->res[0]) + 544 (dir == PCMDIR_REC ? AC_ADC_RXDATA : AC_DAC_TXDATA); 545 546 ch->dmac = devclass_get_device(devclass_find("a10dmac"), 0); 547 if (ch->dmac == NULL) { 548 device_printf(sc->dev, "cannot find DMA controller\n"); 549 return (NULL); 550 } 551 ch->dmachan = SUNXI_DMA_ALLOC(ch->dmac, false, a10codec_dmaintr, ch); 552 if (ch->dmachan == NULL) { 553 device_printf(sc->dev, "cannot allocate DMA channel\n"); 554 return (NULL); 555 } 556 557 error = bus_dmamem_alloc(sc->dmat, &ch->dmaaddr, 558 BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &ch->dmamap); 559 if (error != 0) { 560 device_printf(sc->dev, "cannot allocate channel buffer\n"); 561 return (NULL); 562 } 563 error = bus_dmamap_load(sc->dmat, ch->dmamap, ch->dmaaddr, 564 sc->dmasize, a10codec_dmamap_cb, ch, BUS_DMA_NOWAIT); 565 if (error != 0) { 566 device_printf(sc->dev, "cannot load DMA map\n"); 567 return (NULL); 568 } 569 memset(ch->dmaaddr, 0, sc->dmasize); 570 571 if (sndbuf_setup(ch->buffer, ch->dmaaddr, sc->dmasize) != 0) { 572 device_printf(sc->dev, "cannot setup sndbuf\n"); 573 return (NULL); 574 } 575 576 return (ch); 577 } 578 579 static int 580 a10codec_chan_free(kobj_t obj, void *data) 581 { 582 struct a10codec_chinfo *ch = data; 583 struct a10codec_info *sc = ch->parent; 584 585 SUNXI_DMA_FREE(ch->dmac, ch->dmachan); 586 bus_dmamap_unload(sc->dmat, ch->dmamap); 587 bus_dmamem_free(sc->dmat, ch->dmaaddr, ch->dmamap); 588 589 return (0); 590 } 591 592 static int 593 a10codec_chan_setformat(kobj_t obj, void *data, uint32_t format) 594 { 595 struct a10codec_chinfo *ch = data; 596 597 ch->format = format; 598 599 return (0); 600 } 601 602 static uint32_t 603 a10codec_chan_setspeed(kobj_t obj, void *data, uint32_t speed) 604 { 605 struct a10codec_chinfo *ch = data; 606 607 /* 608 * The codec supports full duplex operation but both DAC and ADC 609 * use the same source clock (PLL2). Limit the available speeds to 610 * those supported by a 24576000 Hz input. 611 */ 612 switch (speed) { 613 case 8000: 614 case 12000: 615 case 16000: 616 case 24000: 617 case 32000: 618 case 48000: 619 ch->speed = speed; 620 break; 621 case 96000: 622 case 192000: 623 /* 96 KHz / 192 KHz mode only supported for playback */ 624 if (ch->dir == PCMDIR_PLAY) { 625 ch->speed = speed; 626 } else { 627 ch->speed = 48000; 628 } 629 break; 630 case 44100: 631 ch->speed = 48000; 632 break; 633 case 22050: 634 ch->speed = 24000; 635 break; 636 case 11025: 637 ch->speed = 12000; 638 break; 639 default: 640 ch->speed = 48000; 641 break; 642 } 643 644 return (ch->speed); 645 } 646 647 static uint32_t 648 a10codec_chan_setblocksize(kobj_t obj, void *data, uint32_t blocksize) 649 { 650 struct a10codec_chinfo *ch = data; 651 652 ch->blocksize = blocksize & ~3; 653 654 return (ch->blocksize); 655 } 656 657 static int 658 a10codec_chan_trigger(kobj_t obj, void *data, int go) 659 { 660 struct a10codec_chinfo *ch = data; 661 struct a10codec_info *sc = ch->parent; 662 663 if (!PCMTRIG_COMMON(go)) 664 return (0); 665 666 snd_mtxlock(sc->lock); 667 switch (go) { 668 case PCMTRIG_START: 669 ch->run = 1; 670 a10codec_start(ch); 671 break; 672 case PCMTRIG_STOP: 673 case PCMTRIG_ABORT: 674 ch->run = 0; 675 a10codec_stop(ch); 676 break; 677 default: 678 break; 679 } 680 snd_mtxunlock(sc->lock); 681 682 return (0); 683 } 684 685 static uint32_t 686 a10codec_chan_getptr(kobj_t obj, void *data) 687 { 688 struct a10codec_chinfo *ch = data; 689 690 return (ch->pos); 691 } 692 693 static struct pcmchan_caps * 694 a10codec_chan_getcaps(kobj_t obj, void *data) 695 { 696 struct a10codec_chinfo *ch = data; 697 698 if (ch->dir == PCMDIR_PLAY) { 699 return (&a10codec_pcaps); 700 } else { 701 return (&a10codec_rcaps); 702 } 703 } 704 705 static kobj_method_t a10codec_chan_methods[] = { 706 KOBJMETHOD(channel_init, a10codec_chan_init), 707 KOBJMETHOD(channel_free, a10codec_chan_free), 708 KOBJMETHOD(channel_setformat, a10codec_chan_setformat), 709 KOBJMETHOD(channel_setspeed, a10codec_chan_setspeed), 710 KOBJMETHOD(channel_setblocksize, a10codec_chan_setblocksize), 711 KOBJMETHOD(channel_trigger, a10codec_chan_trigger), 712 KOBJMETHOD(channel_getptr, a10codec_chan_getptr), 713 KOBJMETHOD(channel_getcaps, a10codec_chan_getcaps), 714 KOBJMETHOD_END 715 }; 716 CHANNEL_DECLARE(a10codec_chan); 717 718 719 /* 720 * Device interface 721 */ 722 723 static int 724 a10codec_probe(device_t dev) 725 { 726 if (!ofw_bus_status_okay(dev)) 727 return (ENXIO); 728 729 if (!ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-codec")) 730 return (ENXIO); 731 732 device_set_desc(dev, "Allwinner Audio Codec"); 733 return (BUS_PROBE_DEFAULT); 734 } 735 736 static int 737 a10codec_attach(device_t dev) 738 { 739 struct a10codec_info *sc; 740 char status[SND_STATUSLEN]; 741 uint32_t val; 742 int error; 743 744 sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO); 745 sc->dev = dev; 746 sc->lock = snd_mtxcreate(device_get_nameunit(dev), "a10codec softc"); 747 748 if (bus_alloc_resources(dev, a10codec_spec, sc->res)) { 749 device_printf(dev, "cannot allocate resources for device\n"); 750 error = ENXIO; 751 goto fail; 752 } 753 754 /* XXX DRQ types should come from FDT, but how? */ 755 if (ofw_bus_is_compatible(dev, "allwinner,sun4i-a10-codec") || 756 ofw_bus_is_compatible(dev, "allwinner,sun7i-a20-codec")) { 757 sc->drqtype_codec = 19; 758 sc->drqtype_sdram = 22; 759 } else { 760 device_printf(dev, "DRQ types not known for this SoC\n"); 761 error = ENXIO; 762 goto fail; 763 } 764 765 sc->dmasize = 131072; 766 error = bus_dma_tag_create( 767 bus_get_dma_tag(dev), 768 4, sc->dmasize, /* alignment, boundary */ 769 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 770 BUS_SPACE_MAXADDR, /* highaddr */ 771 NULL, NULL, /* filter, filterarg */ 772 sc->dmasize, 1, /* maxsize, nsegs */ 773 sc->dmasize, 0, /* maxsegsize, flags */ 774 NULL, NULL, /* lockfunc, lockarg */ 775 &sc->dmat); 776 if (error != 0) { 777 device_printf(dev, "cannot create DMA tag\n"); 778 goto fail; 779 } 780 781 /* Activate audio codec clock. According to the A10 and A20 user 782 * manuals, Audio_pll can be either 24.576MHz or 22.5792MHz. Most 783 * audio sampling rates require an 24.576MHz input clock with the 784 * exception of 44.1kHz, 22.05kHz, and 11.025kHz. Unfortunately, 785 * both capture and playback use the same clock source so to 786 * safely support independent full duplex operation, we use a fixed 787 * 24.576MHz clock source and don't advertise native support for 788 * the three sampling rates that require a 22.5792MHz input. 789 */ 790 a10_clk_codec_activate(24576000); 791 792 /* Enable DAC */ 793 val = CODEC_READ(sc, AC_DAC_DPC); 794 val |= DAC_DPC_EN_DA; 795 CODEC_WRITE(sc, AC_DAC_DPC, val); 796 797 #ifdef notdef 798 error = snd_setup_intr(dev, sc->irq, INTR_MPSAFE, a10codec_intr, sc, 799 &sc->ih); 800 if (error != 0) { 801 device_printf(dev, "could not setup interrupt handler\n"); 802 goto fail; 803 } 804 #endif 805 806 if (mixer_init(dev, &a10codec_mixer_class, sc)) { 807 device_printf(dev, "mixer_init failed\n"); 808 goto fail; 809 } 810 811 pcm_setflags(dev, pcm_getflags(dev) | SD_F_MPSAFE); 812 813 if (pcm_register(dev, sc, 1, 1)) { 814 device_printf(dev, "pcm_register failed\n"); 815 goto fail; 816 } 817 818 pcm_addchan(dev, PCMDIR_PLAY, &a10codec_chan_class, sc); 819 pcm_addchan(dev, PCMDIR_REC, &a10codec_chan_class, sc); 820 821 snprintf(status, SND_STATUSLEN, "at %s", ofw_bus_get_name(dev)); 822 pcm_setstatus(dev, status); 823 824 return (0); 825 826 fail: 827 bus_release_resources(dev, a10codec_spec, sc->res); 828 snd_mtxfree(sc->lock); 829 free(sc, M_DEVBUF); 830 831 return (error); 832 } 833 834 static device_method_t a10codec_pcm_methods[] = { 835 /* Device interface */ 836 DEVMETHOD(device_probe, a10codec_probe), 837 DEVMETHOD(device_attach, a10codec_attach), 838 839 DEVMETHOD_END 840 }; 841 842 static driver_t a10codec_pcm_driver = { 843 "pcm", 844 a10codec_pcm_methods, 845 PCM_SOFTC_SIZE, 846 }; 847 848 DRIVER_MODULE(a10codec, simplebus, a10codec_pcm_driver, pcm_devclass, 0, 0); 849 MODULE_DEPEND(a10codec, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); 850 MODULE_VERSION(a10codec, 1); 851