Guennadi Liakhovetski | 895d450 | 2010-01-22 19:09:03 +0100 | [diff] [blame^] | 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 | |
| 26 | #include <asm/clock.h> |
| 27 | #include <asm/siu.h> |
| 28 | |
| 29 | #include <sound/control.h> |
| 30 | #include <sound/soc-dai.h> |
| 31 | |
| 32 | #include "siu.h" |
| 33 | |
| 34 | /* Board specifics */ |
| 35 | #if defined(CONFIG_CPU_SUBTYPE_SH7722) |
| 36 | # define SIU_MAX_VOLUME 0x1000 |
| 37 | #else |
| 38 | # define SIU_MAX_VOLUME 0x7fff |
| 39 | #endif |
| 40 | |
| 41 | #define PRAM_SIZE 0x2000 |
| 42 | #define XRAM_SIZE 0x800 |
| 43 | #define YRAM_SIZE 0x800 |
| 44 | |
| 45 | #define XRAM_OFFSET 0x4000 |
| 46 | #define YRAM_OFFSET 0x6000 |
| 47 | #define REG_OFFSET 0xc000 |
| 48 | |
| 49 | #define PLAYBACK_ENABLED 1 |
| 50 | #define CAPTURE_ENABLED 2 |
| 51 | |
| 52 | #define VOLUME_CAPTURE 0 |
| 53 | #define VOLUME_PLAYBACK 1 |
| 54 | #define DFLT_VOLUME_LEVEL 0x08000800 |
| 55 | |
| 56 | /* |
| 57 | * SPDIF is only available on port A and on some SIU implementations it is only |
| 58 | * available for input. Due to the lack of hardware to test it, SPDIF is left |
| 59 | * disabled in this driver version |
| 60 | */ |
| 61 | struct format_flag { |
| 62 | u32 i2s; |
| 63 | u32 pcm; |
| 64 | u32 spdif; |
| 65 | u32 mask; |
| 66 | }; |
| 67 | |
| 68 | struct port_flag { |
| 69 | struct format_flag playback; |
| 70 | struct format_flag capture; |
| 71 | }; |
| 72 | |
| 73 | static struct port_flag siu_flags[SIU_PORT_NUM] = { |
| 74 | [SIU_PORT_A] = { |
| 75 | .playback = { |
| 76 | .i2s = 0x50000000, |
| 77 | .pcm = 0x40000000, |
| 78 | .spdif = 0x80000000, /* not on all SIU versions */ |
| 79 | .mask = 0xd0000000, |
| 80 | }, |
| 81 | .capture = { |
| 82 | .i2s = 0x05000000, |
| 83 | .pcm = 0x04000000, |
| 84 | .spdif = 0x08000000, |
| 85 | .mask = 0x0d000000, |
| 86 | }, |
| 87 | }, |
| 88 | [SIU_PORT_B] = { |
| 89 | .playback = { |
| 90 | .i2s = 0x00500000, |
| 91 | .pcm = 0x00400000, |
| 92 | .spdif = 0, /* impossible - turn off */ |
| 93 | .mask = 0x00500000, |
| 94 | }, |
| 95 | .capture = { |
| 96 | .i2s = 0x00050000, |
| 97 | .pcm = 0x00040000, |
| 98 | .spdif = 0, /* impossible - turn off */ |
| 99 | .mask = 0x00050000, |
| 100 | }, |
| 101 | }, |
| 102 | }; |
| 103 | |
| 104 | static void siu_dai_start(struct siu_port *port_info) |
| 105 | { |
| 106 | struct siu_info *info = siu_i2s_dai.private_data; |
| 107 | u32 __iomem *base = info->reg; |
| 108 | |
| 109 | dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); |
| 110 | |
| 111 | /* Turn on SIU clock */ |
| 112 | pm_runtime_get_sync(siu_i2s_dai.dev); |
| 113 | |
| 114 | /* Issue software reset to siu */ |
| 115 | siu_write32(base + SIU_SRCTL, 0); |
| 116 | |
| 117 | /* Wait for the reset to take effect */ |
| 118 | udelay(1); |
| 119 | |
| 120 | port_info->stfifo = 0; |
| 121 | port_info->trdat = 0; |
| 122 | |
| 123 | /* portA, portB, SIU operate */ |
| 124 | siu_write32(base + SIU_SRCTL, 0x301); |
| 125 | |
| 126 | /* portA=256fs, portB=256fs */ |
| 127 | siu_write32(base + SIU_CKCTL, 0x40400000); |
| 128 | |
| 129 | /* portA's BRG does not divide SIUCKA */ |
| 130 | siu_write32(base + SIU_BRGASEL, 0); |
| 131 | siu_write32(base + SIU_BRRA, 0); |
| 132 | |
| 133 | /* portB's BRG divides SIUCKB by half */ |
| 134 | siu_write32(base + SIU_BRGBSEL, 1); |
| 135 | siu_write32(base + SIU_BRRB, 0); |
| 136 | |
| 137 | siu_write32(base + SIU_IFCTL, 0x44440000); |
| 138 | |
| 139 | /* portA: 32 bit/fs, master; portB: 32 bit/fs, master */ |
| 140 | siu_write32(base + SIU_SFORM, 0x0c0c0000); |
| 141 | |
| 142 | /* |
| 143 | * Volume levels: looks like the DSP firmware implements volume controls |
| 144 | * differently from what's described in the datasheet |
| 145 | */ |
| 146 | siu_write32(base + SIU_SBDVCA, port_info->playback.volume); |
| 147 | siu_write32(base + SIU_SBDVCB, port_info->capture.volume); |
| 148 | } |
| 149 | |
| 150 | static void siu_dai_stop(void) |
| 151 | { |
| 152 | struct siu_info *info = siu_i2s_dai.private_data; |
| 153 | u32 __iomem *base = info->reg; |
| 154 | |
| 155 | /* SIU software reset */ |
| 156 | siu_write32(base + SIU_SRCTL, 0); |
| 157 | |
| 158 | /* Turn off SIU clock */ |
| 159 | pm_runtime_put_sync(siu_i2s_dai.dev); |
| 160 | } |
| 161 | |
| 162 | static void siu_dai_spbAselect(struct siu_port *port_info) |
| 163 | { |
| 164 | struct siu_info *info = siu_i2s_dai.private_data; |
| 165 | struct siu_firmware *fw = &info->fw; |
| 166 | u32 *ydef = fw->yram0; |
| 167 | u32 idx; |
| 168 | |
| 169 | /* path A use */ |
| 170 | if (!info->port_id) |
| 171 | idx = 1; /* portA */ |
| 172 | else |
| 173 | idx = 2; /* portB */ |
| 174 | |
| 175 | ydef[0] = (fw->spbpar[idx].ab1a << 16) | |
| 176 | (fw->spbpar[idx].ab0a << 8) | |
| 177 | (fw->spbpar[idx].dir << 7) | 3; |
| 178 | ydef[1] = fw->yram0[1]; /* 0x03000300 */ |
| 179 | ydef[2] = (16 / 2) << 24; |
| 180 | ydef[3] = fw->yram0[3]; /* 0 */ |
| 181 | ydef[4] = fw->yram0[4]; /* 0 */ |
| 182 | ydef[7] = fw->spbpar[idx].event; |
| 183 | port_info->stfifo |= fw->spbpar[idx].stfifo; |
| 184 | port_info->trdat |= fw->spbpar[idx].trdat; |
| 185 | } |
| 186 | |
| 187 | static void siu_dai_spbBselect(struct siu_port *port_info) |
| 188 | { |
| 189 | struct siu_info *info = siu_i2s_dai.private_data; |
| 190 | struct siu_firmware *fw = &info->fw; |
| 191 | u32 *ydef = fw->yram0; |
| 192 | u32 idx; |
| 193 | |
| 194 | /* path B use */ |
| 195 | if (!info->port_id) |
| 196 | idx = 7; /* portA */ |
| 197 | else |
| 198 | idx = 8; /* portB */ |
| 199 | |
| 200 | ydef[5] = (fw->spbpar[idx].ab1a << 16) | |
| 201 | (fw->spbpar[idx].ab0a << 8) | 1; |
| 202 | ydef[6] = fw->spbpar[idx].event; |
| 203 | port_info->stfifo |= fw->spbpar[idx].stfifo; |
| 204 | port_info->trdat |= fw->spbpar[idx].trdat; |
| 205 | } |
| 206 | |
| 207 | static void siu_dai_open(struct siu_stream *siu_stream) |
| 208 | { |
| 209 | struct siu_info *info = siu_i2s_dai.private_data; |
| 210 | u32 __iomem *base = info->reg; |
| 211 | u32 srctl, ifctl; |
| 212 | |
| 213 | srctl = siu_read32(base + SIU_SRCTL); |
| 214 | ifctl = siu_read32(base + SIU_IFCTL); |
| 215 | |
| 216 | switch (info->port_id) { |
| 217 | case SIU_PORT_A: |
| 218 | /* portA operates */ |
| 219 | srctl |= 0x200; |
| 220 | ifctl &= ~0xc2; |
| 221 | break; |
| 222 | case SIU_PORT_B: |
| 223 | /* portB operates */ |
| 224 | srctl |= 0x100; |
| 225 | ifctl &= ~0x31; |
| 226 | break; |
| 227 | } |
| 228 | |
| 229 | siu_write32(base + SIU_SRCTL, srctl); |
| 230 | /* Unmute and configure portA */ |
| 231 | siu_write32(base + SIU_IFCTL, ifctl); |
| 232 | } |
| 233 | |
| 234 | /* |
| 235 | * At the moment only fixed Left-upper, Left-lower, Right-upper, Right-lower |
| 236 | * packing is supported |
| 237 | */ |
| 238 | static void siu_dai_pcmdatapack(struct siu_stream *siu_stream) |
| 239 | { |
| 240 | struct siu_info *info = siu_i2s_dai.private_data; |
| 241 | u32 __iomem *base = info->reg; |
| 242 | u32 dpak; |
| 243 | |
| 244 | dpak = siu_read32(base + SIU_DPAK); |
| 245 | |
| 246 | switch (info->port_id) { |
| 247 | case SIU_PORT_A: |
| 248 | dpak &= ~0xc0000000; |
| 249 | break; |
| 250 | case SIU_PORT_B: |
| 251 | dpak &= ~0x00c00000; |
| 252 | break; |
| 253 | } |
| 254 | |
| 255 | siu_write32(base + SIU_DPAK, dpak); |
| 256 | } |
| 257 | |
| 258 | static int siu_dai_spbstart(struct siu_port *port_info) |
| 259 | { |
| 260 | struct siu_info *info = siu_i2s_dai.private_data; |
| 261 | u32 __iomem *base = info->reg; |
| 262 | struct siu_firmware *fw = &info->fw; |
| 263 | u32 *ydef = fw->yram0; |
| 264 | int cnt; |
| 265 | u32 __iomem *add; |
| 266 | u32 *ptr; |
| 267 | |
| 268 | /* Load SPB Program in PRAM */ |
| 269 | ptr = fw->pram0; |
| 270 | add = info->pram; |
| 271 | for (cnt = 0; cnt < PRAM0_SIZE; cnt++, add++, ptr++) |
| 272 | siu_write32(add, *ptr); |
| 273 | |
| 274 | ptr = fw->pram1; |
| 275 | add = info->pram + (0x0100 / sizeof(u32)); |
| 276 | for (cnt = 0; cnt < PRAM1_SIZE; cnt++, add++, ptr++) |
| 277 | siu_write32(add, *ptr); |
| 278 | |
| 279 | /* XRAM initialization */ |
| 280 | add = info->xram; |
| 281 | for (cnt = 0; cnt < XRAM0_SIZE + XRAM1_SIZE + XRAM2_SIZE; cnt++, add++) |
| 282 | siu_write32(add, 0); |
| 283 | |
| 284 | /* YRAM variable area initialization */ |
| 285 | add = info->yram; |
| 286 | for (cnt = 0; cnt < YRAM_DEF_SIZE; cnt++, add++) |
| 287 | siu_write32(add, ydef[cnt]); |
| 288 | |
| 289 | /* YRAM FIR coefficient area initialization */ |
| 290 | add = info->yram + (0x0200 / sizeof(u32)); |
| 291 | for (cnt = 0; cnt < YRAM_FIR_SIZE; cnt++, add++) |
| 292 | siu_write32(add, fw->yram_fir_coeff[cnt]); |
| 293 | |
| 294 | /* YRAM IIR coefficient area initialization */ |
| 295 | add = info->yram + (0x0600 / sizeof(u32)); |
| 296 | for (cnt = 0; cnt < YRAM_IIR_SIZE; cnt++, add++) |
| 297 | siu_write32(add, 0); |
| 298 | |
| 299 | siu_write32(base + SIU_TRDAT, port_info->trdat); |
| 300 | port_info->trdat = 0x0; |
| 301 | |
| 302 | |
| 303 | /* SPB start condition: software */ |
| 304 | siu_write32(base + SIU_SBACTIV, 0); |
| 305 | /* Start SPB */ |
| 306 | siu_write32(base + SIU_SBCTL, 0xc0000000); |
| 307 | /* Wait for program to halt */ |
| 308 | cnt = 0x10000; |
| 309 | while (--cnt && siu_read32(base + SIU_SBCTL) != 0x80000000) |
| 310 | cpu_relax(); |
| 311 | |
| 312 | if (!cnt) |
| 313 | return -EBUSY; |
| 314 | |
| 315 | /* SPB program start address setting */ |
| 316 | siu_write32(base + SIU_SBPSET, 0x00400000); |
| 317 | /* SPB hardware start(FIFOCTL source) */ |
| 318 | siu_write32(base + SIU_SBACTIV, 0xc0000000); |
| 319 | |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | static void siu_dai_spbstop(struct siu_port *port_info) |
| 324 | { |
| 325 | struct siu_info *info = siu_i2s_dai.private_data; |
| 326 | u32 __iomem *base = info->reg; |
| 327 | |
| 328 | siu_write32(base + SIU_SBACTIV, 0); |
| 329 | /* SPB stop */ |
| 330 | siu_write32(base + SIU_SBCTL, 0); |
| 331 | |
| 332 | port_info->stfifo = 0; |
| 333 | } |
| 334 | |
| 335 | /* API functions */ |
| 336 | |
| 337 | /* Playback and capture hardware properties are identical */ |
| 338 | static struct snd_pcm_hardware siu_dai_pcm_hw = { |
| 339 | .info = SNDRV_PCM_INFO_INTERLEAVED, |
| 340 | .formats = SNDRV_PCM_FMTBIT_S16, |
| 341 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 342 | .rate_min = 8000, |
| 343 | .rate_max = 48000, |
| 344 | .channels_min = 2, |
| 345 | .channels_max = 2, |
| 346 | .buffer_bytes_max = SIU_BUFFER_BYTES_MAX, |
| 347 | .period_bytes_min = SIU_PERIOD_BYTES_MIN, |
| 348 | .period_bytes_max = SIU_PERIOD_BYTES_MAX, |
| 349 | .periods_min = SIU_PERIODS_MIN, |
| 350 | .periods_max = SIU_PERIODS_MAX, |
| 351 | }; |
| 352 | |
| 353 | static int siu_dai_info_volume(struct snd_kcontrol *kctrl, |
| 354 | struct snd_ctl_elem_info *uinfo) |
| 355 | { |
| 356 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); |
| 357 | |
| 358 | dev_dbg(port_info->pcm->card->dev, "%s\n", __func__); |
| 359 | |
| 360 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 361 | uinfo->count = 2; |
| 362 | uinfo->value.integer.min = 0; |
| 363 | uinfo->value.integer.max = SIU_MAX_VOLUME; |
| 364 | |
| 365 | return 0; |
| 366 | } |
| 367 | |
| 368 | static int siu_dai_get_volume(struct snd_kcontrol *kctrl, |
| 369 | struct snd_ctl_elem_value *ucontrol) |
| 370 | { |
| 371 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); |
| 372 | struct device *dev = port_info->pcm->card->dev; |
| 373 | u32 vol; |
| 374 | |
| 375 | dev_dbg(dev, "%s\n", __func__); |
| 376 | |
| 377 | switch (kctrl->private_value) { |
| 378 | case VOLUME_PLAYBACK: |
| 379 | /* Playback is always on port 0 */ |
| 380 | vol = port_info->playback.volume; |
| 381 | ucontrol->value.integer.value[0] = vol & 0xffff; |
| 382 | ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; |
| 383 | break; |
| 384 | case VOLUME_CAPTURE: |
| 385 | /* Capture is always on port 1 */ |
| 386 | vol = port_info->capture.volume; |
| 387 | ucontrol->value.integer.value[0] = vol & 0xffff; |
| 388 | ucontrol->value.integer.value[1] = vol >> 16 & 0xffff; |
| 389 | break; |
| 390 | default: |
| 391 | dev_err(dev, "%s() invalid private_value=%ld\n", |
| 392 | __func__, kctrl->private_value); |
| 393 | return -EINVAL; |
| 394 | } |
| 395 | |
| 396 | return 0; |
| 397 | } |
| 398 | |
| 399 | static int siu_dai_put_volume(struct snd_kcontrol *kctrl, |
| 400 | struct snd_ctl_elem_value *ucontrol) |
| 401 | { |
| 402 | struct siu_port *port_info = snd_kcontrol_chip(kctrl); |
| 403 | struct device *dev = port_info->pcm->card->dev; |
| 404 | struct siu_info *info = siu_i2s_dai.private_data; |
| 405 | u32 __iomem *base = info->reg; |
| 406 | u32 new_vol; |
| 407 | u32 cur_vol; |
| 408 | |
| 409 | dev_dbg(dev, "%s\n", __func__); |
| 410 | |
| 411 | if (ucontrol->value.integer.value[0] < 0 || |
| 412 | ucontrol->value.integer.value[0] > SIU_MAX_VOLUME || |
| 413 | ucontrol->value.integer.value[1] < 0 || |
| 414 | ucontrol->value.integer.value[1] > SIU_MAX_VOLUME) |
| 415 | return -EINVAL; |
| 416 | |
| 417 | new_vol = ucontrol->value.integer.value[0] | |
| 418 | ucontrol->value.integer.value[1] << 16; |
| 419 | |
| 420 | /* See comment above - DSP firmware implementation */ |
| 421 | switch (kctrl->private_value) { |
| 422 | case VOLUME_PLAYBACK: |
| 423 | /* Playback is always on port 0 */ |
| 424 | cur_vol = port_info->playback.volume; |
| 425 | siu_write32(base + SIU_SBDVCA, new_vol); |
| 426 | port_info->playback.volume = new_vol; |
| 427 | break; |
| 428 | case VOLUME_CAPTURE: |
| 429 | /* Capture is always on port 1 */ |
| 430 | cur_vol = port_info->capture.volume; |
| 431 | siu_write32(base + SIU_SBDVCB, new_vol); |
| 432 | port_info->capture.volume = new_vol; |
| 433 | break; |
| 434 | default: |
| 435 | dev_err(dev, "%s() invalid private_value=%ld\n", |
| 436 | __func__, kctrl->private_value); |
| 437 | return -EINVAL; |
| 438 | } |
| 439 | |
| 440 | if (cur_vol != new_vol) |
| 441 | return 1; |
| 442 | |
| 443 | return 0; |
| 444 | } |
| 445 | |
| 446 | static struct snd_kcontrol_new playback_controls = { |
| 447 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 448 | .name = "PCM Playback Volume", |
| 449 | .index = 0, |
| 450 | .info = siu_dai_info_volume, |
| 451 | .get = siu_dai_get_volume, |
| 452 | .put = siu_dai_put_volume, |
| 453 | .private_value = VOLUME_PLAYBACK, |
| 454 | }; |
| 455 | |
| 456 | static struct snd_kcontrol_new capture_controls = { |
| 457 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 458 | .name = "PCM Capture Volume", |
| 459 | .index = 0, |
| 460 | .info = siu_dai_info_volume, |
| 461 | .get = siu_dai_get_volume, |
| 462 | .put = siu_dai_put_volume, |
| 463 | .private_value = VOLUME_CAPTURE, |
| 464 | }; |
| 465 | |
| 466 | int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card) |
| 467 | { |
| 468 | struct device *dev = card->dev; |
| 469 | struct snd_kcontrol *kctrl; |
| 470 | int ret; |
| 471 | |
| 472 | *port_info = kzalloc(sizeof(**port_info), GFP_KERNEL); |
| 473 | if (!*port_info) |
| 474 | return -ENOMEM; |
| 475 | |
| 476 | dev_dbg(dev, "%s: port #%d@%p\n", __func__, port, *port_info); |
| 477 | |
| 478 | (*port_info)->playback.volume = DFLT_VOLUME_LEVEL; |
| 479 | (*port_info)->capture.volume = DFLT_VOLUME_LEVEL; |
| 480 | |
| 481 | /* |
| 482 | * Add mixer support. The SPB is used to change the volume. Both |
| 483 | * ports use the same SPB. Therefore, we only register one |
| 484 | * control instance since it will be used by both channels. |
| 485 | * In error case we continue without controls. |
| 486 | */ |
| 487 | kctrl = snd_ctl_new1(&playback_controls, *port_info); |
| 488 | ret = snd_ctl_add(card, kctrl); |
| 489 | if (ret < 0) |
| 490 | dev_err(dev, |
| 491 | "failed to add playback controls %p port=%d err=%d\n", |
| 492 | kctrl, port, ret); |
| 493 | |
| 494 | kctrl = snd_ctl_new1(&capture_controls, *port_info); |
| 495 | ret = snd_ctl_add(card, kctrl); |
| 496 | if (ret < 0) |
| 497 | dev_err(dev, |
| 498 | "failed to add capture controls %p port=%d err=%d\n", |
| 499 | kctrl, port, ret); |
| 500 | |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | void siu_free_port(struct siu_port *port_info) |
| 505 | { |
| 506 | kfree(port_info); |
| 507 | } |
| 508 | |
| 509 | static int siu_dai_startup(struct snd_pcm_substream *substream, |
| 510 | struct snd_soc_dai *dai) |
| 511 | { |
| 512 | struct siu_info *info = siu_i2s_dai.private_data; |
| 513 | struct snd_pcm_runtime *rt = substream->runtime; |
| 514 | struct siu_port *port_info = siu_port_info(substream); |
| 515 | int ret; |
| 516 | |
| 517 | dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, |
| 518 | info->port_id, port_info); |
| 519 | |
| 520 | snd_soc_set_runtime_hwparams(substream, &siu_dai_pcm_hw); |
| 521 | |
| 522 | ret = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); |
| 523 | if (unlikely(ret < 0)) |
| 524 | return ret; |
| 525 | |
| 526 | siu_dai_start(port_info); |
| 527 | |
| 528 | return 0; |
| 529 | } |
| 530 | |
| 531 | static void siu_dai_shutdown(struct snd_pcm_substream *substream, |
| 532 | struct snd_soc_dai *dai) |
| 533 | { |
| 534 | struct siu_info *info = siu_i2s_dai.private_data; |
| 535 | struct siu_port *port_info = siu_port_info(substream); |
| 536 | |
| 537 | dev_dbg(substream->pcm->card->dev, "%s: port=%d@%p\n", __func__, |
| 538 | info->port_id, port_info); |
| 539 | |
| 540 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 541 | port_info->play_cap &= ~PLAYBACK_ENABLED; |
| 542 | else |
| 543 | port_info->play_cap &= ~CAPTURE_ENABLED; |
| 544 | |
| 545 | /* Stop the siu if the other stream is not using it */ |
| 546 | if (!port_info->play_cap) { |
| 547 | /* during stmread or stmwrite ? */ |
| 548 | BUG_ON(port_info->playback.rw_flg || port_info->capture.rw_flg); |
| 549 | siu_dai_spbstop(port_info); |
| 550 | siu_dai_stop(); |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | /* PCM part of siu_dai_playback_prepare() / siu_dai_capture_prepare() */ |
| 555 | static int siu_dai_prepare(struct snd_pcm_substream *substream, |
| 556 | struct snd_soc_dai *dai) |
| 557 | { |
| 558 | struct siu_info *info = siu_i2s_dai.private_data; |
| 559 | struct snd_pcm_runtime *rt = substream->runtime; |
| 560 | struct siu_port *port_info = siu_port_info(substream); |
| 561 | struct siu_stream *siu_stream; |
| 562 | int self, ret; |
| 563 | |
| 564 | dev_dbg(substream->pcm->card->dev, |
| 565 | "%s: port %d, active streams %lx, %d channels\n", |
| 566 | __func__, info->port_id, port_info->play_cap, rt->channels); |
| 567 | |
| 568 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { |
| 569 | self = PLAYBACK_ENABLED; |
| 570 | siu_stream = &port_info->playback; |
| 571 | } else { |
| 572 | self = CAPTURE_ENABLED; |
| 573 | siu_stream = &port_info->capture; |
| 574 | } |
| 575 | |
| 576 | /* Set up the siu if not already done */ |
| 577 | if (!port_info->play_cap) { |
| 578 | siu_stream->rw_flg = 0; /* stream-data transfer flag */ |
| 579 | |
| 580 | siu_dai_spbAselect(port_info); |
| 581 | siu_dai_spbBselect(port_info); |
| 582 | |
| 583 | siu_dai_open(siu_stream); |
| 584 | |
| 585 | siu_dai_pcmdatapack(siu_stream); |
| 586 | |
| 587 | ret = siu_dai_spbstart(port_info); |
| 588 | if (ret < 0) |
| 589 | goto fail; |
| 590 | } |
| 591 | |
| 592 | port_info->play_cap |= self; |
| 593 | |
| 594 | fail: |
| 595 | return ret; |
| 596 | } |
| 597 | |
| 598 | /* |
| 599 | * SIU can set bus format to I2S / PCM / SPDIF independently for playback and |
| 600 | * capture, however, the current API sets the bus format globally for a DAI. |
| 601 | */ |
| 602 | static int siu_dai_set_fmt(struct snd_soc_dai *dai, |
| 603 | unsigned int fmt) |
| 604 | { |
| 605 | struct siu_info *info = siu_i2s_dai.private_data; |
| 606 | u32 __iomem *base = info->reg; |
| 607 | u32 ifctl; |
| 608 | |
| 609 | dev_dbg(dai->dev, "%s: fmt 0x%x on port %d\n", |
| 610 | __func__, fmt, info->port_id); |
| 611 | |
| 612 | if (info->port_id < 0) |
| 613 | return -ENODEV; |
| 614 | |
| 615 | /* Here select between I2S / PCM / SPDIF */ |
| 616 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 617 | case SND_SOC_DAIFMT_I2S: |
| 618 | ifctl = siu_flags[info->port_id].playback.i2s | |
| 619 | siu_flags[info->port_id].capture.i2s; |
| 620 | break; |
| 621 | case SND_SOC_DAIFMT_LEFT_J: |
| 622 | ifctl = siu_flags[info->port_id].playback.pcm | |
| 623 | siu_flags[info->port_id].capture.pcm; |
| 624 | break; |
| 625 | /* SPDIF disabled - see comment at the top */ |
| 626 | default: |
| 627 | return -EINVAL; |
| 628 | } |
| 629 | |
| 630 | ifctl |= ~(siu_flags[info->port_id].playback.mask | |
| 631 | siu_flags[info->port_id].capture.mask) & |
| 632 | siu_read32(base + SIU_IFCTL); |
| 633 | siu_write32(base + SIU_IFCTL, ifctl); |
| 634 | |
| 635 | return 0; |
| 636 | } |
| 637 | |
| 638 | static int siu_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id, |
| 639 | unsigned int freq, int dir) |
| 640 | { |
| 641 | struct clk *siu_clk, *parent_clk; |
| 642 | char *siu_name, *parent_name; |
| 643 | int ret; |
| 644 | |
| 645 | if (dir != SND_SOC_CLOCK_IN) |
| 646 | return -EINVAL; |
| 647 | |
| 648 | dev_dbg(dai->dev, "%s: using clock %d\n", __func__, clk_id); |
| 649 | |
| 650 | switch (clk_id) { |
| 651 | case SIU_CLKA_PLL: |
| 652 | siu_name = "siua_clk"; |
| 653 | parent_name = "pll_clk"; |
| 654 | break; |
| 655 | case SIU_CLKA_EXT: |
| 656 | siu_name = "siua_clk"; |
| 657 | parent_name = "siumcka_clk"; |
| 658 | break; |
| 659 | case SIU_CLKB_PLL: |
| 660 | siu_name = "siub_clk"; |
| 661 | parent_name = "pll_clk"; |
| 662 | break; |
| 663 | case SIU_CLKB_EXT: |
| 664 | siu_name = "siub_clk"; |
| 665 | parent_name = "siumckb_clk"; |
| 666 | break; |
| 667 | default: |
| 668 | return -EINVAL; |
| 669 | } |
| 670 | |
| 671 | siu_clk = clk_get(siu_i2s_dai.dev, siu_name); |
| 672 | if (IS_ERR(siu_clk)) |
| 673 | return PTR_ERR(siu_clk); |
| 674 | |
| 675 | parent_clk = clk_get(siu_i2s_dai.dev, parent_name); |
| 676 | if (!IS_ERR(parent_clk)) { |
| 677 | ret = clk_set_parent(siu_clk, parent_clk); |
| 678 | if (!ret) |
| 679 | clk_set_rate(siu_clk, freq); |
| 680 | clk_put(parent_clk); |
| 681 | } |
| 682 | |
| 683 | clk_put(siu_clk); |
| 684 | |
| 685 | return 0; |
| 686 | } |
| 687 | |
| 688 | static struct snd_soc_dai_ops siu_dai_ops = { |
| 689 | .startup = siu_dai_startup, |
| 690 | .shutdown = siu_dai_shutdown, |
| 691 | .prepare = siu_dai_prepare, |
| 692 | .set_sysclk = siu_dai_set_sysclk, |
| 693 | .set_fmt = siu_dai_set_fmt, |
| 694 | }; |
| 695 | |
| 696 | struct snd_soc_dai siu_i2s_dai = { |
| 697 | .name = "sh-siu", |
| 698 | .id = 0, |
| 699 | .playback = { |
| 700 | .channels_min = 2, |
| 701 | .channels_max = 2, |
| 702 | .formats = SNDRV_PCM_FMTBIT_S16, |
| 703 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 704 | }, |
| 705 | .capture = { |
| 706 | .channels_min = 2, |
| 707 | .channels_max = 2, |
| 708 | .formats = SNDRV_PCM_FMTBIT_S16, |
| 709 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 710 | }, |
| 711 | .ops = &siu_dai_ops, |
| 712 | }; |
| 713 | EXPORT_SYMBOL_GPL(siu_i2s_dai); |
| 714 | |
| 715 | static int __devinit siu_probe(struct platform_device *pdev) |
| 716 | { |
| 717 | const struct firmware *fw_entry; |
| 718 | struct resource *res, *region; |
| 719 | struct siu_info *info; |
| 720 | int ret; |
| 721 | |
| 722 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 723 | if (!info) |
| 724 | return -ENOMEM; |
| 725 | |
| 726 | ret = request_firmware(&fw_entry, "siu_spb.bin", &pdev->dev); |
| 727 | if (ret) |
| 728 | goto ereqfw; |
| 729 | |
| 730 | /* |
| 731 | * Loaded firmware is "const" - read only, but we have to modify it in |
| 732 | * snd_siu_sh7343_spbAselect() and snd_siu_sh7343_spbBselect() |
| 733 | */ |
| 734 | memcpy(&info->fw, fw_entry->data, fw_entry->size); |
| 735 | |
| 736 | release_firmware(fw_entry); |
| 737 | |
| 738 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 739 | if (!res) { |
| 740 | ret = -ENODEV; |
| 741 | goto egetres; |
| 742 | } |
| 743 | |
| 744 | region = request_mem_region(res->start, resource_size(res), |
| 745 | pdev->name); |
| 746 | if (!region) { |
| 747 | dev_err(&pdev->dev, "SIU region already claimed\n"); |
| 748 | ret = -EBUSY; |
| 749 | goto ereqmemreg; |
| 750 | } |
| 751 | |
| 752 | ret = -ENOMEM; |
| 753 | info->pram = ioremap(res->start, PRAM_SIZE); |
| 754 | if (!info->pram) |
| 755 | goto emappram; |
| 756 | info->xram = ioremap(res->start + XRAM_OFFSET, XRAM_SIZE); |
| 757 | if (!info->xram) |
| 758 | goto emapxram; |
| 759 | info->yram = ioremap(res->start + YRAM_OFFSET, YRAM_SIZE); |
| 760 | if (!info->yram) |
| 761 | goto emapyram; |
| 762 | info->reg = ioremap(res->start + REG_OFFSET, resource_size(res) - |
| 763 | REG_OFFSET); |
| 764 | if (!info->reg) |
| 765 | goto emapreg; |
| 766 | |
| 767 | siu_i2s_dai.dev = &pdev->dev; |
| 768 | siu_i2s_dai.private_data = info; |
| 769 | |
| 770 | ret = snd_soc_register_dais(&siu_i2s_dai, 1); |
| 771 | if (ret < 0) |
| 772 | goto edaiinit; |
| 773 | |
| 774 | ret = snd_soc_register_platform(&siu_platform); |
| 775 | if (ret < 0) |
| 776 | goto esocregp; |
| 777 | |
| 778 | pm_runtime_enable(&pdev->dev); |
| 779 | |
| 780 | return ret; |
| 781 | |
| 782 | esocregp: |
| 783 | snd_soc_unregister_dais(&siu_i2s_dai, 1); |
| 784 | edaiinit: |
| 785 | iounmap(info->reg); |
| 786 | emapreg: |
| 787 | iounmap(info->yram); |
| 788 | emapyram: |
| 789 | iounmap(info->xram); |
| 790 | emapxram: |
| 791 | iounmap(info->pram); |
| 792 | emappram: |
| 793 | release_mem_region(res->start, resource_size(res)); |
| 794 | ereqmemreg: |
| 795 | egetres: |
| 796 | ereqfw: |
| 797 | kfree(info); |
| 798 | |
| 799 | return ret; |
| 800 | } |
| 801 | |
| 802 | static int __devexit siu_remove(struct platform_device *pdev) |
| 803 | { |
| 804 | struct siu_info *info = siu_i2s_dai.private_data; |
| 805 | struct resource *res; |
| 806 | |
| 807 | pm_runtime_disable(&pdev->dev); |
| 808 | |
| 809 | snd_soc_unregister_platform(&siu_platform); |
| 810 | snd_soc_unregister_dais(&siu_i2s_dai, 1); |
| 811 | |
| 812 | iounmap(info->reg); |
| 813 | iounmap(info->yram); |
| 814 | iounmap(info->xram); |
| 815 | iounmap(info->pram); |
| 816 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 817 | if (res) |
| 818 | release_mem_region(res->start, resource_size(res)); |
| 819 | kfree(info); |
| 820 | |
| 821 | return 0; |
| 822 | } |
| 823 | |
| 824 | static struct platform_driver siu_driver = { |
| 825 | .driver = { |
| 826 | .name = "sh_siu", |
| 827 | }, |
| 828 | .probe = siu_probe, |
| 829 | .remove = __devexit_p(siu_remove), |
| 830 | }; |
| 831 | |
| 832 | static int __init siu_init(void) |
| 833 | { |
| 834 | return platform_driver_register(&siu_driver); |
| 835 | } |
| 836 | |
| 837 | static void __exit siu_exit(void) |
| 838 | { |
| 839 | platform_driver_unregister(&siu_driver); |
| 840 | } |
| 841 | |
| 842 | module_init(siu_init) |
| 843 | module_exit(siu_exit) |
| 844 | |
| 845 | MODULE_AUTHOR("Carlos Munoz <carlos@kenati.com>"); |
| 846 | MODULE_DESCRIPTION("ALSA SoC SH7722 SIU driver"); |
| 847 | MODULE_LICENSE("GPL"); |