1// SPDX-License-Identifier: GPL-2.0+ 2// 3// siu_dai.c - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral. 4// 5// Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de> 6// Copyright (C) 2006 Carlos Munoz <carlos@kenati.com> 7 8#include <linux/delay.h> 9#include <linux/firmware.h> 10#include <linux/pm_runtime.h> 11#include <linux/slab.h> 12#include <linux/module.h> 13 14#include <asm/clock.h> 15#include <asm/siu.h> 16 17#include <sound/control.h> 18#include <sound/soc.h> 19 20#include "siu.h" 21 22/* Board specifics */ 23#if defined(CONFIG_CPU_SUBTYPE_SH7722) 24# define SIU_MAX_VOLUME 0x1000 25#else 26# define SIU_MAX_VOLUME 0x7fff 27#endif 28 29#define PRAM_SIZE 0x2000 30#define XRAM_SIZE 0x800 31#define YRAM_SIZE 0x800 32 33#define XRAM_OFFSET 0x4000 34#define YRAM_OFFSET 0x6000 35#define REG_OFFSET 0xc000 36 37#define PLAYBACK_ENABLED 1 38#define CAPTURE_ENABLED 2 39 40#define VOLUME_CAPTURE 0 41#define VOLUME_PLAYBACK 1 42#define DFLT_VOLUME_LEVEL 0x08000800 43 44/* 45 * SPDIF is only available on port A and on some SIU implementations it is only 46 * available for input. Due to the lack of hardware to test it, SPDIF is left 47 * disabled in this driver version 48 */ 49struct format_flag { 50 u32 i2s; 51 u32 pcm; 52 u32 spdif; 53 u32 mask; 54}; 55 56struct port_flag { 57 struct format_flag playback; 58 struct format_flag capture; 59}; 60 61struct siu_info *siu_i2s_data; 62 63static struct port_flag siu_flags[SIU_PORT_NUM] = { 64 [SIU_PORT_A] = { 65 .playback = { 66 .i2s = 0x50000000, 67 .pcm = 0x40000000, 68 .spdif = 0x80000000, /* not on all SIU versions */ 69 .mask = 0xd0000000, 70 }, 71 .capture = { 72 .i2s = 0x05000000, 73 .pcm = 0x04000000, 74 .spdif = 0x08000000, 75 .mask = 0x0d000000, 76 }, 77 }, 78 [SIU_PORT_B] = { 79 .playback = { 80 .i2s = 0x00500000, 81 .pcm = 0x00400000, 82 .spdif = 0, /* impossible - turn off */ 83 .mask = 0x00500000, 84 }, 85 .capture = { 86 .i2s = 0x00050000, 87 .pcm = 0x00040000, 88 .spdif = 0, /* impossible - turn off */ 89 .mask = 0x00050000, 90 }, 91 }, 92}; 93 94static void siu_dai_start(struct siu_port *port_info) 95{ 96 struct siu_info *info = siu_i2s_data; 97 u32 __iomem *base = info->reg; 98 99 dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); 100 101 /* Issue software reset to siu */ 102 siu_write32(base + SIU_SRCTL, 0); 103 104 /* Wait for the reset to take effect */ 105 udelay(1); 106 107 port_info->stfifo = 0; 108 port_info->trdat = 0; 109 110 /* portA, portB, SIU operate */ 111 siu_write32(base + SIU_SRCTL, 0x301); 112 113 /* portA=256fs, portB=256fs */ 114 siu_write32(base + SIU_CKCTL, 0x40400000); 115 116 /* portA's BRG does not divide SIUCKA */ 117 siu_write32(base + SIU_BRGASEL, 0); 118 siu_write32(base + SIU_BRRA, 0); 119 120 /* portB's BRG divides SIUCKB by half */ 121 siu_write32(base + SIU_BRGBSEL, 1); 122 siu_write32(base + SIU_BRRB, 0); 123 124 siu_write32(base + SIU_IFCTL, 0x44440000); 125 126 /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */ 127 siu_write32(base + SIU_SFORM, 0x0c0c0000); 128 129 /* 130 * Volume levels: looks like the DSP firmware implements volume controls 131 * differently from what's described in the datasheet 132 */ 133 siu_write32(base + SIU_SBDVCA, port_info->playback.volume); 134 siu_write32(base + SIU_SBDVCB, port_info->capture.volume); 135} 136 137static void siu_dai_stop(struct siu_port *port_info) 138{ 139 struct siu_info *info = siu_i2s_data; 140 u32 __iomem *base = info->reg; 141 142 /* SIU software reset */ 143 siu_write32(base + SIU_SRCTL, 0); 144} 145 146static void siu_dai_spbAselect(struct siu_port *port_info) 147{ 148 struct siu_info *info = siu_i2s_data; 149 struct siu_firmware *fw = &info->fw; 150 u32 *ydef = fw->yram0; 151 u32 idx; 152 153 /* path A use */ 154 if (!info->port_id) 155 idx = 1; /* portA */ 156 else 157 idx = 2; /* portB */ 158 159 ydef[0] = (fw->spbpar[idx].ab1a << 16) | 160 (fw->spbpar[idx].ab0a << 8) | 161 (fw->spbpar[idx].dir << 7) | 3; 162 ydef[1] = fw->yram0[1]; /* 0x03000300 */ 163 ydef[2] = (16 / 2) << 24; 164 ydef[3] = fw->yram0[3]; /* 0 */ 165 ydef[4] = fw->yram0[4]; /* 0 */ 166 ydef[7] = fw->spbpar[idx].event; 167 port_info->stfifo |= fw->spbpar[idx].stfifo; 168 port_info->trdat |= fw->spbpar[idx].trdat; 169} 170 171static void siu_dai_spbBselect(struct siu_port *port_info) 172{ 173 struct siu_info *info = siu_i2s_data; 174 struct siu_firmware *fw = &info->fw; 175 u32 *ydef = fw->yram0; 176 u32 idx; 177 178 /* path B use */ 179 if (!info->port_id) 180 idx = 7; /* portA */ 181 else 182 idx = 8; /* portB */ 183 184 ydef[5] = (fw->spbpar[idx].ab1a << 16) | 185 (fw->spbpar[idx].ab0a << 8) | 1; 186 ydef[6] = fw->spbpar[idx].event; 187 port_info->stfifo |= fw->spbpar[idx].stfifo; 188 port_info->trdat |= fw->spbpar[idx].trdat; 189} 190 191static void siu_dai_open(struct siu_stream *siu_stream) 192{ 193 struct siu_info *info = siu_i2s_data; 194 u32 __iomem *base = info->reg; 195 u32 srctl, ifctl; 196 197 srctl = siu_read32(base + SIU_SRCTL); 198 ifctl = siu_read32(base + SIU_IFCTL); 199 200 switch (info->port_id) { 201 case SIU_PORT_A: 202 /* portA operates */ 203 srctl |= 0x200; 204 ifctl &= ~0xc2; 205 break; 206 case SIU_PORT_B: 207 /* portB operates */ 208 srctl |= 0x100; 209 ifctl &= ~0x31; 210 break; 211 } 212 213 siu_write32(base + SIU_SRCTL, srctl); 214 /* Unmute and configure portA */ 215 siu_write32(base + SIU_IFCTL, ifctl); 216} 217 218/* 219 * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower 220 * packing is supported 221 */ 222static void siu_dai_pcmdatapack(struct siu_stream *siu_stream) 223{ 224 struct siu_info *info = siu_i2s_data; 225 u32 __iomem *base = info->reg; 226 u32 dpak; 227 228 dpak = siu_read32(base + SIU_DPAK); 229 230 switch (info->port_id) { 231 case SIU_PORT_A: 232 dpak &= ~0xc0000000; 233 break; 234 case SIU_PORT_B: 235 dpak &= ~0x00c00000; 236 break; 237 } 238 239 siu_write32(base + SIU_DPAK, dpak); 240} 241 242static int siu_dai_spbstart(struct siu_port *port_info) 243{ 244 struct siu_info *info = siu_i2s_data; 245 u32 __iomem *base = info->reg; 246 struct siu_firmware *fw = &info->fw; 247 u32 *ydef = fw->yram0; 248 int cnt; 249 u32 __iomem *add; 250 u32 *ptr; 251 252 /* Load SPB Program in PRAM */ 253 ptr = fw->pram0; 254 add = info->pram; 255 for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++) 256 siu_write32(add, *ptr); 257 258 ptr = fw->pram1; 259 add = info->pram + (0x0100 / sizeof(u32)); 260 for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++) 261 siu_write32(add, *ptr); 262 263 /* XRAM initialization */ 264 add = info->xram; 265 for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++) 266 siu_write32(add, 0); 267 268 /* YRAM variable area initialization */ 269 add = info->yram; 270 for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++) 271 siu_write32(add, ydef[cnt]); 272 273 /* YRAM FIR coefficient area initialization */ 274 add = info->yram + (0x0200 / sizeof(u32)); 275 for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++) 276 siu_write32(add, fw->yram_fir_coeff[cnt]); 277 278 /* YRAM IIR coefficient area initialization */ 279 add = info->yram + (0x0600 / sizeof(u32)); 280 for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++) 281 siu_write32(add, 0); 282 283 siu_write32(base + SIU_TRDAT, port_info->trdat); 284 port_info->trdat = 0x0; 285 286 287 /* SPB start condition: software */ 288 siu_write32(base + SIU_SBACTIV, 0); 289 /* Start SPB */ 290 siu_write32(base + SIU_SBCTL, 0xc0000000); 291 /* Wait for program to halt */ 292 cnt = 0x10000; 293 while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000) 294 cpu_relax(); 295 296 if (!cnt) 297 return -EBUSY; 298 299 /* SPB program start address setting */ 300 siu_write32(base + SIU_SBPSET, 0x00400000); 301 /* SPB hardware start(FIFOCTL source) */ 302 siu_write32(base + SIU_SBACTIV, 0xc0000000); 303 304 return 0; 305} 306 307static void siu_dai_spbstop(struct siu_port *port_info) 308{ 309 struct siu_info *info = siu_i2s_data; 310 u32 __iomem *base = info->reg; 311 312 siu_write32(base + SIU_SBACTIV, 0); 313 /* SPB stop */ 314 siu_write32(base + SIU_SBCTL, 0); 315 316 port_info->stfifo = 0; 317} 318 319/* API functions */ 320 321/* Playback and capture hardware properties are identical */ 322static const struct snd_pcm_hardware siu_dai_pcm_hw = { 323 .info = SNDRV_PCM_INFO_INTERLEAVED, 324 .formats = SNDRV_PCM_FMTBIT_S16, 325 .rates = SNDRV_PCM_RATE_8000_48000, 326 .rate_min = 8000, 327 .rate_max = 48000, 328 .channels_min = 2, 329 .channels_max = 2, 330 .buffer_bytes_max = SIU_BUFFER_BYTES_MAX, 331 .period_bytes_min = SIU_PERIOD_BYTES_MIN, 332 .period_bytes_max = SIU_PERIOD_BYTES_MAX, 333 .periods_min = SIU_PERIODS_MIN, 334 .periods_max = SIU_PERIODS_MAX, 335}; 336 337static int siu_dai_info_volume(struct snd_kcontrol *kctrl, 338 struct snd_ctl_elem_info *uinfo) 339{ 340 struct siu_port *port_info = snd_kcontrol_chip(kctrl); 341 342 dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); 343 344 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 345 uinfo->count = 2; 346 uinfo->value.integer.min = 0; 347 uinfo->value.integer.max = SIU_MAX_VOLUME; 348 349 return 0; 350} 351 352static int siu_dai_get_volume(struct snd_kcontrol *kctrl, 353 struct snd_ctl_elem_value *ucontrol) 354{ 355 struct siu_port *port_info = snd_kcontrol_chip(kctrl); 356 struct device *dev = port_info->pcm->card->dev; 357 u32 vol; 358 359 dev_dbg(dev, "%s\n", __func__); 360 361 switch (kctrl->private_value) { 362 case VOLUME_PLAYBACK: 363 /* Playback is always on port 0 */ 364 vol = port_info->playback.volume; 365 ucontrol->value.integer.value[0] = vol & 0xffff; 366 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; 367 break; 368 case VOLUME_CAPTURE: 369 /* Capture is always on port 1 */ 370 vol = port_info->capture.volume; 371 ucontrol->value.integer.value[0] = vol & 0xffff; 372 ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; 373 break; 374 default: 375 dev_err(dev, "%s() invalid private_value=%ld\n", 376 __func__, kctrl->private_value); 377 return -EINVAL; 378 } 379 380 return 0; 381} 382 383static int siu_dai_put_volume(struct snd_kcontrol *kctrl, 384 struct snd_ctl_elem_value *ucontrol) 385{ 386 struct siu_port *port_info = snd_kcontrol_chip(kctrl); 387 struct device *dev = port_info->pcm->card->dev; 388 struct siu_info *info = siu_i2s_data; 389 u32 __iomem *base = info->reg; 390 u32 new_vol; 391 u32 cur_vol; 392 393 dev_dbg(dev, "%s\n", __func__); 394 395 if (ucontrol->value.integer.value[0] < 0 || 396 ucontrol->value.integer.value[0] > SIU_MAX_VOLUME || 397 ucontrol->value.integer.value[1] < 0 || 398 ucontrol->value.integer.value[1] > SIU_MAX_VOLUME) 399 return -EINVAL; 400 401 new_vol = ucontrol->value.integer.value[0] | 402 ucontrol->value.integer.value[1] << 16; 403 404 /* See comment above - DSP firmware implementation */ 405 switch (kctrl->private_value) { 406 case VOLUME_PLAYBACK: 407 /* Playback is always on port 0 */ 408 cur_vol = port_info->playback.volume; 409 siu_write32(base + SIU_SBDVCA, new_vol); 410 port_info->playback.volume = new_vol; 411 break; 412 case VOLUME_CAPTURE: 413 /* Capture is always on port 1 */ 414 cur_vol = port_info->capture.volume; 415 siu_write32(base + SIU_SBDVCB, new_vol); 416 port_info->capture.volume = new_vol; 417 break; 418 default: 419 dev_err(dev, "%s() invalid private_value=%ld\n", 420 __func__, kctrl->private_value); 421 return -EINVAL; 422 } 423 424 if (cur_vol != new_vol) 425 return 1; 426 427 return 0; 428} 429 430static const struct snd_kcontrol_new playback_controls = { 431 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 432 .name = "PCM Playback Volume", 433 .index = 0, 434 .info = siu_dai_info_volume, 435 .get = siu_dai_get_volume, 436 .put = siu_dai_put_volume, 437 .private_value = VOLUME_PLAYBACK, 438}; 439 440static const struct snd_kcontrol_new capture_controls = { 441 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 442 .name = "PCM Capture Volume", 443 .index = 0, 444 .info = siu_dai_info_volume, 445 .get = siu_dai_get_volume, 446 .put = siu_dai_put_volume, 447 .private_value = VOLUME_CAPTURE, 448}; 449 450int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card) 451{ 452 struct device *dev = card->dev; 453 struct snd_kcontrol *kctrl; 454 int ret; 455 456 *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL); 457 if (!*port_info) 458 return -ENOMEM; 459 460 dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info); 461 462 (*port_info)->playback.volume = DFLT_VOLUME_LEVEL; 463 (*port_info)->capture.volume = DFLT_VOLUME_LEVEL; 464 465 /* 466 * Add mixer support. The SPB is used to change the volume. Both 467 * ports use the same SPB. Therefore, we only register one 468 * control instance since it will be used by both channels. 469 * In error case we continue without controls. 470 */ 471 kctrl = snd_ctl_new1(&playback_controls, *port_info); 472 ret = snd_ctl_add(card, kctrl); 473 if (ret < 0) 474 dev_err(dev, 475 "failed to add playback controls %p port=%d err=%d\n", 476 kctrl, port, ret); 477 478 kctrl = snd_ctl_new1(&capture_controls, *port_info); 479 ret = snd_ctl_add(card, kctrl); 480 if (ret < 0) 481 dev_err(dev, 482 "failed to add capture controls %p port=%d err=%d\n", 483 kctrl, port, ret); 484 485 return 0; 486} 487 488void siu_free_port(struct siu_port *port_info) 489{ 490 kfree(port_info); 491} 492 493static int siu_dai_startup(struct snd_pcm_substream *substream, 494 struct snd_soc_dai *dai) 495{ 496 struct siu_info *info = snd_soc_dai_get_drvdata(dai); 497 struct snd_pcm_runtime *rt = substream->runtime; 498 struct siu_port *port_info = siu_port_info(substream); 499 int ret; 500 501 dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, 502 info->port_id, port_info); 503 504 snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw); 505 506 ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); 507 if (unlikely(ret < 0)) 508 return ret; 509 510 siu_dai_start(port_info); 511 512 return 0; 513} 514 515static void siu_dai_shutdown(struct snd_pcm_substream *substream, 516 struct snd_soc_dai *dai) 517{ 518 struct siu_info *info = snd_soc_dai_get_drvdata(dai); 519 struct siu_port *port_info = siu_port_info(substream); 520 521 dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, 522 info->port_id, port_info); 523 524 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) 525 port_info->play_cap &= ~PLAYBACK_ENABLED; 526 else 527 port_info->play_cap &= ~CAPTURE_ENABLED; 528 529 /* Stop the siu if the other stream is not using it */ 530 if (!port_info->play_cap) { 531 /* during stmread or stmwrite ? */ 532 if (WARN_ON(port_info->playback.rw_flg || port_info->capture.rw_flg)) 533 return; 534 siu_dai_spbstop(port_info); 535 siu_dai_stop(port_info); 536 } 537} 538 539/* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */ 540static int siu_dai_prepare(struct snd_pcm_substream *substream, 541 struct snd_soc_dai *dai) 542{ 543 struct siu_info *info = snd_soc_dai_get_drvdata(dai); 544 struct snd_pcm_runtime *rt = substream->runtime; 545 struct siu_port *port_info = siu_port_info(substream); 546 struct siu_stream *siu_stream; 547 int self, ret; 548 549 dev_dbg(substream->pcm->card->dev, 550 "%s: port %d, active streams %lx, %d channels\n", 551 __func__, info->port_id, port_info->play_cap, rt->channels); 552 553 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { 554 self = PLAYBACK_ENABLED; 555 siu_stream = &port_info->playback; 556 } else { 557 self = CAPTURE_ENABLED; 558 siu_stream = &port_info->capture; 559 } 560 561 /* Set up the siu if not already done */ 562 if (!port_info->play_cap) { 563 siu_stream->rw_flg = 0; /* stream-data transfer flag */ 564 565 siu_dai_spbAselect(port_info); 566 siu_dai_spbBselect(port_info); 567 568 siu_dai_open(siu_stream); 569 570 siu_dai_pcmdatapack(siu_stream); 571 572 ret = siu_dai_spbstart(port_info); 573 if (ret < 0) 574 goto fail; 575 } else { 576 ret = 0; 577 } 578 579 port_info->play_cap |= self; 580 581fail: 582 return ret; 583} 584 585/* 586 * SIU can set bus format to I2S / PCM / SPDIF independently for playback and 587 * capture, however, the current API sets the bus format globally for a DAI. 588 */ 589static int siu_dai_set_fmt(struct snd_soc_dai *dai, 590 unsigned int fmt) 591{ 592 struct siu_info *info = snd_soc_dai_get_drvdata(dai); 593 u32 __iomem *base = info->reg; 594 u32 ifctl; 595 596 dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n", 597 __func__, fmt, info->port_id); 598 599 if (info->port_id < 0) 600 return -ENODEV; 601 602 /* Here select between I2S / PCM / SPDIF */ 603 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { 604 case SND_SOC_DAIFMT_I2S: 605 ifctl = siu_flags[info->port_id].playback.i2s | 606 siu_flags[info->port_id].capture.i2s; 607 break; 608 case SND_SOC_DAIFMT_LEFT_J: 609 ifctl = siu_flags[info->port_id].playback.pcm | 610 siu_flags[info->port_id].capture.pcm; 611 break; 612 /* SPDIF disabled - see comment at the top */ 613 default: 614 return -EINVAL; 615 } 616 617 ifctl |= ~(siu_flags[info->port_id].playback.mask | 618 siu_flags[info->port_id].capture.mask) & 619 siu_read32(base + SIU_IFCTL); 620 siu_write32(base + SIU_IFCTL, ifctl); 621 622 return 0; 623} 624 625static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, 626 unsigned int freq, int dir) 627{ 628 struct clk *siu_clk, *parent_clk; 629 char *siu_name, *parent_name; 630 int ret; 631 632 if (dir != SND_SOC_CLOCK_IN) 633 return -EINVAL; 634 635 dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id); 636 637 switch (clk_id) { 638 case SIU_CLKA_PLL: 639 siu_name = "siua_clk"; 640 parent_name = "pll_clk"; 641 break; 642 case SIU_CLKA_EXT: 643 siu_name = "siua_clk"; 644 parent_name = "siumcka_clk"; 645 break; 646 case SIU_CLKB_PLL: 647 siu_name = "siub_clk"; 648 parent_name = "pll_clk"; 649 break; 650 case SIU_CLKB_EXT: 651 siu_name = "siub_clk"; 652 parent_name = "siumckb_clk"; 653 break; 654 default: 655 return -EINVAL; 656 } 657 658 siu_clk = clk_get(dai->dev, siu_name); 659 if (IS_ERR(siu_clk)) { 660 dev_err(dai->dev, "%s: cannot get a SIU clock: %ld\n", __func__, 661 PTR_ERR(siu_clk)); 662 return PTR_ERR(siu_clk); 663 } 664 665 parent_clk = clk_get(dai->dev, parent_name); 666 if (IS_ERR(parent_clk)) { 667 ret = PTR_ERR(parent_clk); 668 dev_err(dai->dev, "cannot get a SIU clock parent: %d\n", ret); 669 goto epclkget; 670 } 671 672 ret = clk_set_parent(siu_clk, parent_clk); 673 if (ret < 0) { 674 dev_err(dai->dev, "cannot reparent the SIU clock: %d\n", ret); 675 goto eclksetp; 676 } 677 678 ret = clk_set_rate(siu_clk, freq); 679 if (ret < 0) 680 dev_err(dai->dev, "cannot set SIU clock rate: %d\n", ret); 681 682 /* TODO: when clkdev gets reference counting we'll move these to siu_dai_shutdown() */ 683eclksetp: 684 clk_put(parent_clk); 685epclkget: 686 clk_put(siu_clk); 687 688 return ret; 689} 690 691static const 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 699static struct snd_soc_dai_driver siu_i2s_dai = { 700 .name = "siu-i2s-dai", 701 .playback = { 702 .channels_min = 2, 703 .channels_max = 2, 704 .formats = SNDRV_PCM_FMTBIT_S16, 705 .rates = SNDRV_PCM_RATE_8000_48000, 706 }, 707 .capture = { 708 .channels_min = 2, 709 .channels_max = 2, 710 .formats = SNDRV_PCM_FMTBIT_S16, 711 .rates = SNDRV_PCM_RATE_8000_48000, 712 }, 713 .ops = &siu_dai_ops, 714}; 715 716static int siu_probe(struct platform_device *pdev) 717{ 718 const struct firmware *fw_entry; 719 struct resource *res, *region; 720 struct siu_info *info; 721 int ret; 722 723 info = devm_kmalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 724 if (!info) 725 return -ENOMEM; 726 siu_i2s_data = info; 727 info->dev = &pdev->dev; 728 729 ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev); 730 if (ret) 731 return ret; 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 return -ENODEV; 744 745 region = devm_request_mem_region(&pdev->dev, res->start, 746 resource_size(res), pdev->name); 747 if (!region) { 748 dev_err(&pdev->dev, "SIU region already claimed\n"); 749 return -EBUSY; 750 } 751 752 info->pram = devm_ioremap(&pdev->dev, res->start, PRAM_SIZE); 753 if (!info->pram) 754 return -ENOMEM; 755 info->xram = devm_ioremap(&pdev->dev, res->start + XRAM_OFFSET, 756 XRAM_SIZE); 757 if (!info->xram) 758 return -ENOMEM; 759 info->yram = devm_ioremap(&pdev->dev, res->start + YRAM_OFFSET, 760 YRAM_SIZE); 761 if (!info->yram) 762 return -ENOMEM; 763 info->reg = devm_ioremap(&pdev->dev, res->start + REG_OFFSET, 764 resource_size(res) - REG_OFFSET); 765 if (!info->reg) 766 return -ENOMEM; 767 768 dev_set_drvdata(&pdev->dev, info); 769 770 /* register using ARRAY version so we can keep dai name */ 771 ret = devm_snd_soc_register_component(&pdev->dev, &siu_component, 772 &siu_i2s_dai, 1); 773 if (ret < 0) 774 return ret; 775 776 pm_runtime_enable(&pdev->dev); 777 778 return 0; 779} 780 781static void siu_remove(struct platform_device *pdev) 782{ 783 pm_runtime_disable(&pdev->dev); 784} 785 786static struct platform_driver siu_driver = { 787 .driver = { 788 .name = "siu-pcm-audio", 789 }, 790 .probe = siu_probe, 791 .remove_new = siu_remove, 792}; 793 794module_platform_driver(siu_driver); 795 796MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>"); 797MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver"); 798MODULE_LICENSE("GPL"); 799 800MODULE_FIRMWARE("siu_spb.bin"); 801