1/* 2 * siu_dai.c - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral. 3 * 4 * Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> 5 * Copyright (C) 2006 Carlos Munoz <carlos@kenati.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22#include <linux/delay.h> 23#include <linux/firmware.h> 24#include <linux/pm_runtime.h> 25#include <linux/slab.h> 26 27#include <asm/clock.h> 28#include <asm/siu.h> 29 30#include <sound/control.h> 31#include <sound/soc-dai.h> 32 33#include "siu.h" 34 35/* Board specifics */ 36#if defined(CONFIG_CPU_SUBTYPE_SH7722) 37# define SIU_MAX_VOLUME 0x1000 38#else 39# define SIU_MAX_VOLUME 0x7fff 40#endif 41 42#define PRAM_SIZE 0x2000 43#define XRAM_SIZE 0x800 44#define YRAM_SIZE 0x800 45 46#define XRAM_OFFSET 0x4000 47#define YRAM_OFFSET 0x6000 48#define REG_OFFSET 0xc000 49 50#define PLAYBACK_ENABLED 1 51#define CAPTURE_ENABLED 2 52 53#define VOLUME_CAPTURE 0 54#define VOLUME_PLAYBACK 1 55#define DFLT_VOLUME_LEVEL 0x08000800 56 57/* 58 * SPDIF is only available on port A and on some SIU implementations it is only 59 * available for input. Due to the lack of hardware to test it, SPDIF is left 60 * disabled in this driver version 61 */ 62struct format_flag { 63 u32 i2s; 64 u32 pcm; 65 u32 spdif; 66 u32 mask; 67}; 68 69struct port_flag { 70 struct format_flag playback; 71 struct format_flag capture; 72}; 73 74static struct port_flag siu_flags[SIU_PORT_NUM] = { 75 [SIU_PORT_A] = { 76 .playback = { 77 .i2s = 0x50000000, 78 .pcm = 0x40000000, 79 .spdif = 0x80000000, /* not on all SIU versions */ 80 .mask = 0xd0000000, 81 }, 82 .capture = { 83 .i2s = 0x05000000, 84 .pcm = 0x04000000, 85 .spdif = 0x08000000, 86 .mask = 0x0d000000, 87 }, 88 }, 89 [SIU_PORT_B] = { 90 .playback = { 91 .i2s = 0x00500000, 92 .pcm = 0x00400000, 93 .spdif = 0, /* impossible - turn off */ 94 .mask = 0x00500000, 95 }, 96 .capture = { 97 .i2s = 0x00050000, 98 .pcm = 0x00040000, 99 .spdif = 0, /* impossible - turn off */ 100 .mask = 0x00050000, 101 }, 102 }, 103}; 104 105static void siu_dai_start(struct siu_port *port_info) 106{ 107 struct siu_info *info = siu_i2s_dai.private_data; 108 u32 __iomem *base = info->reg; 109 110 dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); 111 112 /* Turn on SIU clock */ 113 pm_runtime_get_sync(siu_i2s_dai.dev); 114 115 /* Issue software reset to siu */ 116 siu_write32(base + SIU_SRCTL, 0); 117 118 /* Wait for the reset to take effect */ 119 udelay(1); 120 121 port_info->stfifo = 0; 122 port_info->trdat = 0; 123 124 /* portA, portB, SIU operate */ 125 siu_write32(base + SIU_SRCTL, 0x301); 126 127 /* portA=256fs, portB=256fs */ 128 siu_write32(base + SIU_CKCTL, 0x40400000); 129 130 /* portA's BRG does not divide SIUCKA */ 131 siu_write32(base + SIU_BRGASEL, 0); 132 siu_write32(base + SIU_BRRA, 0); 133 134 /* portB's BRG divides SIUCKB by half */ 135 siu_write32(base + SIU_BRGBSEL, 1); 136 siu_write32(base + SIU_BRRB, 0); 137 138 siu_write32(base + SIU_IFCTL, 0x44440000); 139 140 /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */ 141 siu_write32(base + SIU_SFORM, 0x0c0c0000); 142 143 /* 144 * Volume levels: looks like the DSP firmware implements volume controls 145 * differently from what's described in the datasheet 146 */ 147 siu_write32(base + SIU_SBDVCA, port_info->playback.volume); 148 siu_write32(base + SIU_SBDVCB, port_info->capture.volume); 149} 150 151static void siu_dai_stop(void) 152{ 153 struct siu_info *info = siu_i2s_dai.private_data; 154 u32 __iomem *base = info->reg; 155 156 /* SIU software reset */ 157 siu_write32(base + SIU_SRCTL, 0); 158 159 /* Turn off SIU clock */ 160 pm_runtime_put_sync(siu_i2s_dai.dev); 161} 162 163static void siu_dai_spbAselect(struct siu_port *port_info) 164{ 165 struct siu_info *info = siu_i2s_dai.private_data; 166 struct siu_firmware *fw = &info->fw; 167 u32 *ydef = fw->yram0; 168 u32 idx; 169 170 /* path A use */ 171 if (!info->port_id) 172 idx = 1; /* portA */ 173 else 174 idx = 2; /* portB */ 175 176 ydef[0] = (fw->spbpar[idx].ab1a << 16) | 177 (fw->spbpar[idx].ab0a << 8) | 178 (fw->spbpar[idx].dir << 7) | 3; 179 ydef[1] = fw->yram0[1]; /* 0x03000300 */ 180 ydef[2] = (16 / 2) << 24; 181 ydef[3] = fw->yram0[3]; /* 0 */ 182 ydef[4] = fw->yram0[4]; /* 0 */ 183 ydef[7] = fw->spbpar[idx].event; 184 port_info->stfifo |= fw->spbpar[idx].stfifo; 185 port_info->trdat |= fw->spbpar[idx].trdat; 186} 187 188static void siu_dai_spbBselect(struct siu_port *port_info) 189{ 190 struct siu_info *info = siu_i2s_dai.private_data; 191 struct siu_firmware *fw = &info->fw; 192 u32 *ydef = fw->yram0; 193 u32 idx; 194 195 /* path B use */ 196 if (!info->port_id) 197 idx = 7; /* portA */ 198 else 199 idx = 8; /* portB */ 200 201 ydef[5] = (fw->spbpar[idx].ab1a << 16) | 202 (fw->spbpar[idx].ab0a << 8) | 1; 203 ydef[6] = fw->spbpar[idx].event; 204 port_info->stfifo |= fw->spbpar[idx].stfifo; 205 port_info->trdat |= fw->spbpar[idx].trdat; 206} 207 208static void siu_dai_open(struct siu_stream *siu_stream) 209{ 210 struct siu_info *info = siu_i2s_dai.private_data; 211 u32 __iomem *base = info->reg; 212 u32 srctl, ifctl; 213 214 srctl = siu_read32(base + SIU_SRCTL); 215 ifctl = siu_read32(base + SIU_IFCTL); 216 217 switch (info->port_id) { 218 case SIU_PORT_A: 219 /* portA operates */ 220 srctl |= 0x200; 221 ifctl &= ~0xc2; 222 break; 223 case SIU_PORT_B: 224 /* portB operates */ 225 srctl |= 0x100; 226 ifctl &= ~0x31; 227 break; 228 } 229 230 siu_write32(base + SIU_SRCTL, srctl); 231 /* Unmute and configure portA */ 232 siu_write32(base + SIU_IFCTL, ifctl); 233} 234 235/* 236 * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower 237 * packing is supported 238 */ 239static void siu_dai_pcmdatapack(struct siu_stream *siu_stream) 240{ 241 struct siu_info *info = siu_i2s_dai.private_data; 242 u32 __iomem *base = info->reg; 243 u32 dpak; 244 245 dpak = siu_read32(base + SIU_DPAK); 246 247 switch (info->port_id) { 248 case SIU_PORT_A: 249 dpak &= ~0xc0000000; 250 break; 251 case SIU_PORT_B: 252 dpak &= ~0x00c00000; 253 break; 254 } 255 256 siu_write32(base + SIU_DPAK, dpak); 257} 258 259static int siu_dai_spbstart(struct siu_port *port_info) 260{ 261 struct siu_info *info = siu_i2s_dai.private_data; 262 u32 __iomem *base = info->reg; 263 struct siu_firmware *fw = &info->fw; 264 u32 *ydef = fw->yram0; 265 int cnt; 266 u32 __iomem *add; 267 u32 *ptr; 268 269 /* Load SPB Program in PRAM */ 270 ptr = fw->pram0; 271 add = info->pram; 272 for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++) 273 siu_write32(add, *ptr); 274 275 ptr = fw->pram1; 276 add = info->pram + (0x0100 / sizeof(u32)); 277 for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++) 278 siu_write32(add, *ptr); 279 280 /* XRAM initialization */ 281 add = info->xram; 282 for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++) 283 siu_write32(add, 0); 284 285 /* YRAM variable area initialization */ 286 add = info->yram; 287 for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++) 288 siu_write32(add, ydef[cnt]); 289 290 /* YRAM FIR coefficient area initialization */ 291 add = info->yram + (0x0200 / sizeof(u32)); 292 for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++) 293 siu_write32(add, fw->yram_fir_coeff[cnt]); 294 295 /* YRAM IIR coefficient area initialization */ 296 add = info->yram + (0x0600 / sizeof(u32)); 297 for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++) 298 siu_write32(add, 0); 299 300 siu_write32(base + SIU_TRDAT, port_info->trdat); 301 port_info->trdat = 0x0; 302 303 304 /* SPB start condition: software */ 305 siu_write32(base + SIU_SBACTIV, 0); 306 /* Start SPB */ 307 siu_write32(base + SIU_SBCTL, 0xc0000000); 308 /* Wait for program to halt */ 309 cnt = 0x10000; 310 while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000) 311 cpu_relax(); 312 313 if (!cnt) 314 return -EBUSY; 315 316 /* SPB program start address setting */ 317 siu_write32(base + SIU_SBPSET, 0x00400000); 318 /* SPB hardware start(FIFOCTL source) */ 319 siu_write32(base + SIU_SBACTIV, 0xc0000000); 320 321 return 0; 322} 323 324static void siu_dai_spbstop(struct siu_port *port_info) 325{ 326 struct siu_info *info = siu_i2s_dai.private_data; 327 u32 __iomem *base = info->reg; 328 329 siu_write32(base + SIU_SBACTIV, 0); 330 /* SPB stop */ 331 siu_write32(base + SIU_SBCTL, 0); 332 333 port_info->stfifo = 0; 334} 335 336/* API functions */ 337 338/* Playback and capture hardware properties are identical */ 339static struct snd_pcm_hardware siu_dai_pcm_hw = { 340 .info = SNDRV_PCM_INFO_INTERLEAVED, 341 .formats = SNDRV_PCM_FMTBIT_S16, 342 .rates = SNDRV_PCM_RATE_8000_48000, 343 .rate_min = 8000, 344 .rate_max = 48000, 345 .channels_min = 2, 346 .channels_max = 2, 347 .buffer_bytes_max = SIU_BUFFER_BYTES_MAX, 348 .period_bytes_min = SIU_PERIOD_BYTES_MIN, 349 .period_bytes_max = SIU_PERIOD_BYTES_MAX, 350 .periods_min = SIU_PERIODS_MIN, 351 .periods_max = SIU_PERIODS_MAX, 352}; 353 354static int siu_dai_info_volume(struct snd_kcontrol *kctrl, 355 struct snd_ctl_elem_info *uinfo) 356{ 357 struct siu_port *port_info = snd_kcontrol_chip(kctrl); 358 359 dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); 360 361 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 362 uinfo->count = 2; 363 uinfo->value.integer.min = 0; 364 uinfo->value.integer.max = SIU_MAX_VOLUME; 365 366 return 0; 367} 368 369static int siu_dai_get_volume(struct snd_kcontrol *kctrl, 370 struct snd_ctl_elem_value *ucontrol) 371{ 372 struct siu_port *port_info = snd_kcontrol_chip(kctrl); 373 struct device *dev = port_info->pcm->card->dev; 374 u32 vol; 375 376 dev_dbg(dev, "%s\n", __func__); 377 378 switch (kctrl->private_value) { 379 case VOLUME_PLAYBACK: 380 /* Playback is always on port 0 */ 381 vol = port_info->playback.volume; 382 ucontrol->value.integer.value[0] = vol & 0xffff; 383 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; 384 break; 385 case VOLUME_CAPTURE: 386 /* Capture is always on port 1 */ 387 vol = port_info->capture.volume; 388 ucontrol->value.integer.value[0] = vol & 0xffff; 389 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; 390 break; 391 default: 392 dev_err(dev, "%s() invalid private_value=%ld\n", 393 __func__, kctrl->private_value); 394 return -EINVAL; 395 } 396 397 return 0; 398} 399 400static int siu_dai_put_volume(struct snd_kcontrol *kctrl, 401 struct snd_ctl_elem_value *ucontrol) 402{ 403 struct siu_port *port_info = snd_kcontrol_chip(kctrl); 404 struct device *dev = port_info->pcm->card->dev; 405 struct siu_info *info = siu_i2s_dai.private_data; 406 u32 __iomem *base = info->reg; 407 u32 new_vol; 408 u32 cur_vol; 409 410 dev_dbg(dev, "%s\n", __func__); 411 412 if (ucontrol->value.integer.value[0] < 0 || 413 ucontrol->value.integer.value[0] > SIU_MAX_VOLUME || 414 ucontrol->value.integer.value[1] < 0 || 415 ucontrol->value.integer.value[1] > SIU_MAX_VOLUME) 416 return -EINVAL; 417 418 new_vol = ucontrol->value.integer.value[0] | 419 ucontrol->value.integer.value[1] << 16; 420 421 /* See comment above - DSP firmware implementation */ 422 switch (kctrl->private_value) { 423 case VOLUME_PLAYBACK: 424 /* Playback is always on port 0 */ 425 cur_vol = port_info->playback.volume; 426 siu_write32(base + SIU_SBDVCA, new_vol); 427 port_info->playback.volume = new_vol; 428 break; 429 case VOLUME_CAPTURE: 430 /* Capture is always on port 1 */ 431 cur_vol = port_info->capture.volume; 432 siu_write32(base + SIU_SBDVCB, new_vol); 433 port_info->capture.volume = new_vol; 434 break; 435 default: 436 dev_err(dev, "%s() invalid private_value=%ld\n", 437 __func__, kctrl->private_value); 438 return -EINVAL; 439 } 440 441 if (cur_vol != new_vol) 442 return 1; 443 444 return 0; 445} 446 447static struct snd_kcontrol_new playback_controls = { 448 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 449 .name = "PCM Playback Volume", 450 .index = 0, 451 .info = siu_dai_info_volume, 452 .get = siu_dai_get_volume, 453 .put = siu_dai_put_volume, 454 .private_value = VOLUME_PLAYBACK, 455}; 456 457static struct snd_kcontrol_new capture_controls = { 458 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 459 .name = "PCM Capture Volume", 460 .index = 0, 461 .info = siu_dai_info_volume, 462 .get = siu_dai_get_volume, 463 .put = siu_dai_put_volume, 464 .private_value = VOLUME_CAPTURE, 465}; 466 467int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card) 468{ 469 struct device *dev = card->dev; 470 struct snd_kcontrol *kctrl; 471 int ret; 472 473 *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL); 474 if (!*port_info) 475 return -ENOMEM; 476 477 dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info); 478 479 (*port_info)->playback.volume = DFLT_VOLUME_LEVEL; 480 (*port_info)->capture.volume = DFLT_VOLUME_LEVEL; 481 482 /* 483 * Add mixer support. The SPB is used to change the volume. Both 484 * ports use the same SPB. Therefore, we only register one 485 * control instance since it will be used by both channels. 486 * In error case we continue without controls. 487 */ 488 kctrl = snd_ctl_new1(&playback_controls, *port_info); 489 ret = snd_ctl_add(card, kctrl); 490 if (ret < 0) 491 dev_err(dev, 492 "failed to add playback controls %p port=%d err=%d\n", 493 kctrl, port, ret); 494 495 kctrl = snd_ctl_new1(&capture_controls, *port_info); 496 ret = snd_ctl_add(card, kctrl); 497 if (ret < 0) 498 dev_err(dev, 499 "failed to add capture controls %p port=%d err=%d\n", 500 kctrl, port, ret); 501 502 return 0; 503} 504 505void siu_free_port(struct siu_port *port_info) 506{ 507 kfree(port_info); 508} 509 510static int siu_dai_startup(struct snd_pcm_substream *substream, 511 struct snd_soc_dai *dai) 512{ 513 struct siu_info *info = siu_i2s_dai.private_data; 514 struct snd_pcm_runtime *rt = substream->runtime; 515 struct siu_port *port_info = siu_port_info(substream); 516 int ret; 517 518 dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, 519 info->port_id, port_info); 520 521 snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw); 522 523 ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); 524 if (unlikely(ret < 0)) 525 return ret; 526 527 siu_dai_start(port_info); 528 529 return 0; 530} 531 532static void siu_dai_shutdown(struct snd_pcm_substream *substream, 533 struct snd_soc_dai *dai) 534{ 535 struct siu_info *info = siu_i2s_dai.private_data; 536 struct siu_port *port_info = siu_port_info(substream); 537 538 dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, 539 info->port_id, port_info); 540 541 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 542 port_info->play_cap &= ~PLAYBACK_ENABLED; 543 else 544 port_info->play_cap &= ~CAPTURE_ENABLED; 545 546 /* Stop the siu if the other stream is not using it */ 547 if (!port_info->play_cap) { 548 /* during stmread or stmwrite ? */ 549 BUG_ON(port_info->playback.rw_flg || port_info->capture.rw_flg); 550 siu_dai_spbstop(port_info); 551 siu_dai_stop(); 552 } 553} 554 555/* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */ 556static int siu_dai_prepare(struct snd_pcm_substream *substream, 557 struct snd_soc_dai *dai) 558{ 559 struct siu_info *info = siu_i2s_dai.private_data; 560 struct snd_pcm_runtime *rt = substream->runtime; 561 struct siu_port *port_info = siu_port_info(substream); 562 struct siu_stream *siu_stream; 563 int self, ret; 564 565 dev_dbg(substream->pcm->card->dev, 566 "%s: port %d, active streams %lx, %d channels\n", 567 __func__, info->port_id, port_info->play_cap, rt->channels); 568 569 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 570 self = PLAYBACK_ENABLED; 571 siu_stream = &port_info->playback; 572 } else { 573 self = CAPTURE_ENABLED; 574 siu_stream = &port_info->capture; 575 } 576 577 /* Set up the siu if not already done */ 578 if (!port_info->play_cap) { 579 siu_stream->rw_flg = 0; /* stream-data transfer flag */ 580 581 siu_dai_spbAselect(port_info); 582 siu_dai_spbBselect(port_info); 583 584 siu_dai_open(siu_stream); 585 586 siu_dai_pcmdatapack(siu_stream); 587 588 ret = siu_dai_spbstart(port_info); 589 if (ret < 0) 590 goto fail; 591 } else { 592 ret = 0; 593 } 594 595 port_info->play_cap |= self; 596 597fail: 598 return ret; 599} 600 601/* 602 * SIU can set bus format to I2S / PCM / SPDIF independently for playback and 603 * capture, however, the current API sets the bus format globally for a DAI. 604 */ 605static int siu_dai_set_fmt(struct snd_soc_dai *dai, 606 unsigned int fmt) 607{ 608 struct siu_info *info = siu_i2s_dai.private_data; 609 u32 __iomem *base = info->reg; 610 u32 ifctl; 611 612 dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n", 613 __func__, fmt, info->port_id); 614 615 if (info->port_id < 0) 616 return -ENODEV; 617 618 /* Here select between I2S / PCM / SPDIF */ 619 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 620 case SND_SOC_DAIFMT_I2S: 621 ifctl = siu_flags[info->port_id].playback.i2s | 622 siu_flags[info->port_id].capture.i2s; 623 break; 624 case SND_SOC_DAIFMT_LEFT_J: 625 ifctl = siu_flags[info->port_id].playback.pcm | 626 siu_flags[info->port_id].capture.pcm; 627 break; 628 /* SPDIF disabled - see comment at the top */ 629 default: 630 return -EINVAL; 631 } 632 633 ifctl |= ~(siu_flags[info->port_id].playback.mask | 634 siu_flags[info->port_id].capture.mask) & 635 siu_read32(base + SIU_IFCTL); 636 siu_write32(base + SIU_IFCTL, ifctl); 637 638 return 0; 639} 640 641static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, 642 unsigned int freq, int dir) 643{ 644 struct clk *siu_clk, *parent_clk; 645 char *siu_name, *parent_name; 646 int ret; 647 648 if (dir != SND_SOC_CLOCK_IN) 649 return -EINVAL; 650 651 dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id); 652 653 switch (clk_id) { 654 case SIU_CLKA_PLL: 655 siu_name = "siua_clk"; 656 parent_name = "pll_clk"; 657 break; 658 case SIU_CLKA_EXT: 659 siu_name = "siua_clk"; 660 parent_name = "siumcka_clk"; 661 break; 662 case SIU_CLKB_PLL: 663 siu_name = "siub_clk"; 664 parent_name = "pll_clk"; 665 break; 666 case SIU_CLKB_EXT: 667 siu_name = "siub_clk"; 668 parent_name = "siumckb_clk"; 669 break; 670 default: 671 return -EINVAL; 672 } 673 674 siu_clk = clk_get(siu_i2s_dai.dev, siu_name); 675 if (IS_ERR(siu_clk)) 676 return PTR_ERR(siu_clk); 677 678 parent_clk = clk_get(siu_i2s_dai.dev, parent_name); 679 if (!IS_ERR(parent_clk)) { 680 ret = clk_set_parent(siu_clk, parent_clk); 681 if (!ret) 682 clk_set_rate(siu_clk, freq); 683 clk_put(parent_clk); 684 } 685 686 clk_put(siu_clk); 687 688 return 0; 689} 690 691static struct snd_soc_dai_ops siu_dai_ops = { 692 .startup = siu_dai_startup, 693 .shutdown = siu_dai_shutdown, 694 .prepare = siu_dai_prepare, 695 .set_sysclk = siu_dai_set_sysclk, 696 .set_fmt = siu_dai_set_fmt, 697}; 698 699struct snd_soc_dai siu_i2s_dai = { 700 .name = "sh-siu", 701 .id = 0, 702 .playback = { 703 .channels_min = 2, 704 .channels_max = 2, 705 .formats = SNDRV_PCM_FMTBIT_S16, 706 .rates = SNDRV_PCM_RATE_8000_48000, 707 }, 708 .capture = { 709 .channels_min = 2, 710 .channels_max = 2, 711 .formats = SNDRV_PCM_FMTBIT_S16, 712 .rates = SNDRV_PCM_RATE_8000_48000, 713 }, 714 .ops = &siu_dai_ops, 715}; 716EXPORT_SYMBOL_GPL(siu_i2s_dai); 717 718static int __devinit siu_probe(struct platform_device *pdev) 719{ 720 const struct firmware *fw_entry; 721 struct resource *res, *region; 722 struct siu_info *info; 723 int ret; 724 725 info = kmalloc(sizeof(*info), GFP_KERNEL); 726 if (!info) 727 return -ENOMEM; 728 729 ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev); 730 if (ret) 731 goto ereqfw; 732 733 /* 734 * Loaded firmware is "const" - read only, but we have to modify it in 735 * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect() 736 */ 737 memcpy(&info->fw, fw_entry->data, fw_entry->size); 738 739 release_firmware(fw_entry); 740 741 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 742 if (!res) { 743 ret = -ENODEV; 744 goto egetres; 745 } 746 747 region = request_mem_region(res->start, resource_size(res), 748 pdev->name); 749 if (!region) { 750 dev_err(&pdev->dev, "SIU region already claimed\n"); 751 ret = -EBUSY; 752 goto ereqmemreg; 753 } 754 755 ret = -ENOMEM; 756 info->pram = ioremap(res->start, PRAM_SIZE); 757 if (!info->pram) 758 goto emappram; 759 info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE); 760 if (!info->xram) 761 goto emapxram; 762 info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE); 763 if (!info->yram) 764 goto emapyram; 765 info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) - 766 REG_OFFSET); 767 if (!info->reg) 768 goto emapreg; 769 770 siu_i2s_dai.dev = &pdev->dev; 771 siu_i2s_dai.private_data = info; 772 773 ret = snd_soc_register_dais(&siu_i2s_dai, 1); 774 if (ret < 0) 775 goto edaiinit; 776 777 ret = snd_soc_register_platform(&siu_platform); 778 if (ret < 0) 779 goto esocregp; 780 781 pm_runtime_enable(&pdev->dev); 782 783 return ret; 784 785esocregp: 786 snd_soc_unregister_dais(&siu_i2s_dai, 1); 787edaiinit: 788 iounmap(info->reg); 789emapreg: 790 iounmap(info->yram); 791emapyram: 792 iounmap(info->xram); 793emapxram: 794 iounmap(info->pram); 795emappram: 796 release_mem_region(res->start, resource_size(res)); 797ereqmemreg: 798egetres: 799ereqfw: 800 kfree(info); 801 802 return ret; 803} 804 805static int __devexit siu_remove(struct platform_device *pdev) 806{ 807 struct siu_info *info = siu_i2s_dai.private_data; 808 struct resource *res; 809 810 pm_runtime_disable(&pdev->dev); 811 812 snd_soc_unregister_platform(&siu_platform); 813 snd_soc_unregister_dais(&siu_i2s_dai, 1); 814 815 iounmap(info->reg); 816 iounmap(info->yram); 817 iounmap(info->xram); 818 iounmap(info->pram); 819 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 820 if (res) 821 release_mem_region(res->start, resource_size(res)); 822 kfree(info); 823 824 return 0; 825} 826 827static struct platform_driver siu_driver = { 828 .driver = { 829 .name = "sh_siu", 830 }, 831 .probe = siu_probe, 832 .remove = __devexit_p(siu_remove), 833}; 834 835static int __init siu_init(void) 836{ 837 return platform_driver_register(&siu_driver); 838} 839 840static void __exit siu_exit(void) 841{ 842 platform_driver_unregister(&siu_driver); 843} 844 845module_init(siu_init) 846module_exit(siu_exit) 847 848MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>"); 849MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver"); 850MODULE_LICENSE("GPL"); 851