Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 1 | /* |
| 2 | * hdac-ext-stream.c - HD-audio extended stream operations. |
| 3 | * |
| 4 | * Copyright (C) 2015 Intel Corp |
| 5 | * Author: Jeeja KP <jeeja.kp@intel.com> |
| 6 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; version 2 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * General Public License for more details. |
| 16 | * |
| 17 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 18 | */ |
| 19 | |
| 20 | #include <linux/delay.h> |
Vinod Koul | e7a3484 | 2015-06-17 11:20:16 +0530 | [diff] [blame] | 21 | #include <linux/slab.h> |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 22 | #include <sound/pcm.h> |
| 23 | #include <sound/hda_register.h> |
| 24 | #include <sound/hdaudio_ext.h> |
| 25 | |
| 26 | /** |
| 27 | * snd_hdac_ext_stream_init - initialize each stream (aka device) |
| 28 | * @ebus: HD-audio ext core bus |
| 29 | * @stream: HD-audio ext core stream object to initialize |
| 30 | * @idx: stream index number |
| 31 | * @direction: stream direction (SNDRV_PCM_STREAM_PLAYBACK or SNDRV_PCM_STREAM_CAPTURE) |
| 32 | * @tag: the tag id to assign |
| 33 | * |
| 34 | * initialize the stream, if ppcap is enabled then init those and then |
| 35 | * invoke hdac stream initialization routine |
| 36 | */ |
| 37 | void snd_hdac_ext_stream_init(struct hdac_ext_bus *ebus, |
| 38 | struct hdac_ext_stream *stream, |
| 39 | int idx, int direction, int tag) |
| 40 | { |
| 41 | struct hdac_bus *bus = &ebus->bus; |
| 42 | |
| 43 | if (ebus->ppcap) { |
| 44 | stream->pphc_addr = ebus->ppcap + AZX_PPHC_BASE + |
| 45 | AZX_PPHC_INTERVAL * idx; |
| 46 | |
| 47 | stream->pplc_addr = ebus->ppcap + AZX_PPLC_BASE + |
| 48 | AZX_PPLC_MULTI * ebus->num_streams + |
| 49 | AZX_PPLC_INTERVAL * idx; |
| 50 | } |
| 51 | |
Jeeja KP | ee8bc4d | 2015-08-21 21:36:20 +0530 | [diff] [blame] | 52 | if (ebus->spbcap) { |
| 53 | stream->spib_addr = ebus->spbcap + AZX_SPB_BASE + |
| 54 | AZX_SPB_INTERVAL * idx + |
| 55 | AZX_SPB_SPIB; |
| 56 | |
| 57 | stream->fifo_addr = ebus->spbcap + AZX_SPB_BASE + |
| 58 | AZX_SPB_INTERVAL * idx + |
| 59 | AZX_SPB_MAXFIFO; |
| 60 | } |
| 61 | |
Jeeja KP | a9c48f7 | 2015-12-18 15:11:59 +0530 | [diff] [blame] | 62 | if (ebus->drsmcap) |
| 63 | stream->dpibr_addr = ebus->drsmcap + AZX_DRSM_BASE + |
| 64 | AZX_DRSM_INTERVAL * idx; |
| 65 | |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 66 | stream->decoupled = false; |
| 67 | snd_hdac_stream_init(bus, &stream->hstream, idx, direction, tag); |
| 68 | } |
| 69 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_init); |
| 70 | |
| 71 | /** |
Vinod Koul | e7a3484 | 2015-06-17 11:20:16 +0530 | [diff] [blame] | 72 | * snd_hdac_ext_stream_init_all - create and initialize the stream objects |
| 73 | * for an extended hda bus |
| 74 | * @ebus: HD-audio ext core bus |
| 75 | * @start_idx: start index for streams |
| 76 | * @num_stream: number of streams to initialize |
| 77 | * @dir: direction of streams |
| 78 | */ |
| 79 | int snd_hdac_ext_stream_init_all(struct hdac_ext_bus *ebus, int start_idx, |
| 80 | int num_stream, int dir) |
| 81 | { |
| 82 | int stream_tag = 0; |
| 83 | int i, tag, idx = start_idx; |
| 84 | |
| 85 | for (i = 0; i < num_stream; i++) { |
| 86 | struct hdac_ext_stream *stream = |
| 87 | kzalloc(sizeof(*stream), GFP_KERNEL); |
| 88 | if (!stream) |
| 89 | return -ENOMEM; |
| 90 | tag = ++stream_tag; |
| 91 | snd_hdac_ext_stream_init(ebus, stream, idx, dir, tag); |
| 92 | idx++; |
| 93 | } |
| 94 | |
| 95 | return 0; |
| 96 | |
| 97 | } |
| 98 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_init_all); |
| 99 | |
| 100 | /** |
| 101 | * snd_hdac_stream_free_all - free hdac extended stream objects |
| 102 | * |
| 103 | * @ebus: HD-audio ext core bus |
| 104 | */ |
| 105 | void snd_hdac_stream_free_all(struct hdac_ext_bus *ebus) |
| 106 | { |
| 107 | struct hdac_stream *s; |
| 108 | struct hdac_ext_stream *stream; |
| 109 | struct hdac_bus *bus = ebus_to_hbus(ebus); |
| 110 | |
| 111 | while (!list_empty(&bus->stream_list)) { |
| 112 | s = list_first_entry(&bus->stream_list, struct hdac_stream, list); |
| 113 | stream = stream_to_hdac_ext_stream(s); |
Jeeja KP | 8888815 | 2015-12-18 15:12:00 +0530 | [diff] [blame] | 114 | snd_hdac_ext_stream_decouple(ebus, stream, false); |
Vinod Koul | e7a3484 | 2015-06-17 11:20:16 +0530 | [diff] [blame] | 115 | list_del(&s->list); |
| 116 | kfree(stream); |
| 117 | } |
| 118 | } |
| 119 | EXPORT_SYMBOL_GPL(snd_hdac_stream_free_all); |
| 120 | |
| 121 | /** |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 122 | * snd_hdac_ext_stream_decouple - decouple the hdac stream |
| 123 | * @ebus: HD-audio ext core bus |
| 124 | * @stream: HD-audio ext core stream object to initialize |
| 125 | * @decouple: flag to decouple |
| 126 | */ |
| 127 | void snd_hdac_ext_stream_decouple(struct hdac_ext_bus *ebus, |
| 128 | struct hdac_ext_stream *stream, bool decouple) |
| 129 | { |
| 130 | struct hdac_stream *hstream = &stream->hstream; |
| 131 | struct hdac_bus *bus = &ebus->bus; |
| 132 | |
| 133 | spin_lock_irq(&bus->reg_lock); |
| 134 | if (decouple) |
| 135 | snd_hdac_updatel(ebus->ppcap, AZX_REG_PP_PPCTL, 0, |
| 136 | AZX_PPCTL_PROCEN(hstream->index)); |
| 137 | else |
| 138 | snd_hdac_updatel(ebus->ppcap, AZX_REG_PP_PPCTL, |
| 139 | AZX_PPCTL_PROCEN(hstream->index), 0); |
| 140 | stream->decoupled = decouple; |
| 141 | spin_unlock_irq(&bus->reg_lock); |
| 142 | } |
| 143 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_decouple); |
| 144 | |
| 145 | /** |
| 146 | * snd_hdac_ext_linkstream_start - start a stream |
| 147 | * @stream: HD-audio ext core stream to start |
| 148 | */ |
| 149 | void snd_hdac_ext_link_stream_start(struct hdac_ext_stream *stream) |
| 150 | { |
| 151 | snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL, 0, AZX_PPLCCTL_RUN); |
| 152 | } |
| 153 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_stream_start); |
| 154 | |
| 155 | /** |
| 156 | * snd_hdac_ext_link_stream_clear - stop a stream DMA |
| 157 | * @stream: HD-audio ext core stream to stop |
| 158 | */ |
| 159 | void snd_hdac_ext_link_stream_clear(struct hdac_ext_stream *stream) |
| 160 | { |
| 161 | snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL, AZX_PPLCCTL_RUN, 0); |
| 162 | } |
| 163 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_stream_clear); |
| 164 | |
| 165 | /** |
| 166 | * snd_hdac_ext_link_stream_reset - reset a stream |
| 167 | * @stream: HD-audio ext core stream to reset |
| 168 | */ |
| 169 | void snd_hdac_ext_link_stream_reset(struct hdac_ext_stream *stream) |
| 170 | { |
| 171 | unsigned char val; |
| 172 | int timeout; |
| 173 | |
| 174 | snd_hdac_ext_link_stream_clear(stream); |
| 175 | |
| 176 | snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL, 0, AZX_PPLCCTL_STRST); |
| 177 | udelay(3); |
| 178 | timeout = 50; |
| 179 | do { |
| 180 | val = readl(stream->pplc_addr + AZX_REG_PPLCCTL) & |
| 181 | AZX_PPLCCTL_STRST; |
| 182 | if (val) |
| 183 | break; |
| 184 | udelay(3); |
| 185 | } while (--timeout); |
| 186 | val &= ~AZX_PPLCCTL_STRST; |
| 187 | writel(val, stream->pplc_addr + AZX_REG_PPLCCTL); |
| 188 | udelay(3); |
| 189 | |
| 190 | timeout = 50; |
| 191 | /* waiting for hardware to report that the stream is out of reset */ |
| 192 | do { |
| 193 | val = readl(stream->pplc_addr + AZX_REG_PPLCCTL) & AZX_PPLCCTL_STRST; |
| 194 | if (!val) |
| 195 | break; |
| 196 | udelay(3); |
| 197 | } while (--timeout); |
| 198 | |
| 199 | } |
| 200 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_stream_reset); |
| 201 | |
| 202 | /** |
| 203 | * snd_hdac_ext_link_stream_setup - set up the SD for streaming |
| 204 | * @stream: HD-audio ext core stream to set up |
| 205 | * @fmt: stream format |
| 206 | */ |
| 207 | int snd_hdac_ext_link_stream_setup(struct hdac_ext_stream *stream, int fmt) |
| 208 | { |
| 209 | struct hdac_stream *hstream = &stream->hstream; |
| 210 | unsigned int val; |
| 211 | |
| 212 | /* make sure the run bit is zero for SD */ |
| 213 | snd_hdac_ext_link_stream_clear(stream); |
| 214 | /* program the stream_tag */ |
| 215 | val = readl(stream->pplc_addr + AZX_REG_PPLCCTL); |
| 216 | val = (val & ~AZX_PPLCCTL_STRM_MASK) | |
| 217 | (hstream->stream_tag << AZX_PPLCCTL_STRM_SHIFT); |
| 218 | writel(val, stream->pplc_addr + AZX_REG_PPLCCTL); |
| 219 | |
| 220 | /* program the stream format */ |
| 221 | writew(fmt, stream->pplc_addr + AZX_REG_PPLCFMT); |
| 222 | |
| 223 | return 0; |
| 224 | } |
| 225 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_stream_setup); |
| 226 | |
| 227 | /** |
| 228 | * snd_hdac_ext_link_set_stream_id - maps stream id to link output |
| 229 | * @link: HD-audio ext link to set up |
| 230 | * @stream: stream id |
| 231 | */ |
| 232 | void snd_hdac_ext_link_set_stream_id(struct hdac_ext_link *link, |
| 233 | int stream) |
| 234 | { |
Subhransu S. Prusty | 88b1996 | 2015-10-05 15:09:48 +0100 | [diff] [blame] | 235 | snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 1 << stream); |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 236 | } |
| 237 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_set_stream_id); |
| 238 | |
| 239 | /** |
| 240 | * snd_hdac_ext_link_clear_stream_id - maps stream id to link output |
| 241 | * @link: HD-audio ext link to set up |
| 242 | * @stream: stream id |
| 243 | */ |
| 244 | void snd_hdac_ext_link_clear_stream_id(struct hdac_ext_link *link, |
| 245 | int stream) |
| 246 | { |
| 247 | snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, 0, (1 << stream)); |
| 248 | } |
| 249 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_clear_stream_id); |
| 250 | |
| 251 | static struct hdac_ext_stream * |
| 252 | hdac_ext_link_stream_assign(struct hdac_ext_bus *ebus, |
| 253 | struct snd_pcm_substream *substream) |
| 254 | { |
| 255 | struct hdac_ext_stream *res = NULL; |
| 256 | struct hdac_stream *stream = NULL; |
| 257 | struct hdac_bus *hbus = &ebus->bus; |
| 258 | |
| 259 | if (!ebus->ppcap) { |
| 260 | dev_err(hbus->dev, "stream type not supported\n"); |
| 261 | return NULL; |
| 262 | } |
| 263 | |
| 264 | list_for_each_entry(stream, &hbus->stream_list, list) { |
| 265 | struct hdac_ext_stream *hstream = container_of(stream, |
| 266 | struct hdac_ext_stream, |
| 267 | hstream); |
| 268 | if (stream->direction != substream->stream) |
| 269 | continue; |
| 270 | |
| 271 | /* check if decoupled stream and not in use is available */ |
| 272 | if (hstream->decoupled && !hstream->link_locked) { |
| 273 | res = hstream; |
| 274 | break; |
| 275 | } |
| 276 | |
| 277 | if (!hstream->link_locked) { |
| 278 | snd_hdac_ext_stream_decouple(ebus, hstream, true); |
| 279 | res = hstream; |
| 280 | break; |
| 281 | } |
| 282 | } |
| 283 | if (res) { |
| 284 | spin_lock_irq(&hbus->reg_lock); |
| 285 | res->link_locked = 1; |
| 286 | res->link_substream = substream; |
| 287 | spin_unlock_irq(&hbus->reg_lock); |
| 288 | } |
| 289 | return res; |
| 290 | } |
| 291 | |
| 292 | static struct hdac_ext_stream * |
| 293 | hdac_ext_host_stream_assign(struct hdac_ext_bus *ebus, |
| 294 | struct snd_pcm_substream *substream) |
| 295 | { |
| 296 | struct hdac_ext_stream *res = NULL; |
| 297 | struct hdac_stream *stream = NULL; |
| 298 | struct hdac_bus *hbus = &ebus->bus; |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 299 | |
| 300 | if (!ebus->ppcap) { |
| 301 | dev_err(hbus->dev, "stream type not supported\n"); |
| 302 | return NULL; |
| 303 | } |
| 304 | |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 305 | list_for_each_entry(stream, &hbus->stream_list, list) { |
| 306 | struct hdac_ext_stream *hstream = container_of(stream, |
| 307 | struct hdac_ext_stream, |
| 308 | hstream); |
| 309 | if (stream->direction != substream->stream) |
| 310 | continue; |
| 311 | |
Jeeja KP | 9b06dc9 | 2015-08-04 09:28:38 +0530 | [diff] [blame] | 312 | if (!stream->opened) { |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 313 | if (!hstream->decoupled) |
| 314 | snd_hdac_ext_stream_decouple(ebus, hstream, true); |
| 315 | res = hstream; |
| 316 | break; |
| 317 | } |
| 318 | } |
| 319 | if (res) { |
| 320 | spin_lock_irq(&hbus->reg_lock); |
| 321 | res->hstream.opened = 1; |
| 322 | res->hstream.running = 0; |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 323 | res->hstream.substream = substream; |
| 324 | spin_unlock_irq(&hbus->reg_lock); |
| 325 | } |
| 326 | |
| 327 | return res; |
| 328 | } |
| 329 | |
| 330 | /** |
| 331 | * snd_hdac_ext_stream_assign - assign a stream for the PCM |
| 332 | * @ebus: HD-audio ext core bus |
| 333 | * @substream: PCM substream to assign |
| 334 | * @type: type of stream (coupled, host or link stream) |
| 335 | * |
| 336 | * This assigns the stream based on the type (coupled/host/link), for the |
| 337 | * given PCM substream, assigns it and returns the stream object |
| 338 | * |
| 339 | * coupled: Looks for an unused stream |
| 340 | * host: Looks for an unused decoupled host stream |
| 341 | * link: Looks for an unused decoupled link stream |
| 342 | * |
| 343 | * If no stream is free, returns NULL. The function tries to keep using |
| 344 | * the same stream object when it's used beforehand. when a stream is |
| 345 | * decoupled, it becomes a host stream and link stream. |
| 346 | */ |
| 347 | struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_ext_bus *ebus, |
| 348 | struct snd_pcm_substream *substream, |
| 349 | int type) |
| 350 | { |
| 351 | struct hdac_ext_stream *hstream = NULL; |
| 352 | struct hdac_stream *stream = NULL; |
| 353 | struct hdac_bus *hbus = &ebus->bus; |
| 354 | |
| 355 | switch (type) { |
| 356 | case HDAC_EXT_STREAM_TYPE_COUPLED: |
| 357 | stream = snd_hdac_stream_assign(hbus, substream); |
| 358 | if (stream) |
| 359 | hstream = container_of(stream, |
| 360 | struct hdac_ext_stream, hstream); |
| 361 | return hstream; |
| 362 | |
| 363 | case HDAC_EXT_STREAM_TYPE_HOST: |
| 364 | return hdac_ext_host_stream_assign(ebus, substream); |
| 365 | |
| 366 | case HDAC_EXT_STREAM_TYPE_LINK: |
| 367 | return hdac_ext_link_stream_assign(ebus, substream); |
| 368 | |
| 369 | default: |
| 370 | return NULL; |
| 371 | } |
| 372 | } |
| 373 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_assign); |
| 374 | |
| 375 | /** |
| 376 | * snd_hdac_ext_stream_release - release the assigned stream |
| 377 | * @stream: HD-audio ext core stream to release |
| 378 | * @type: type of stream (coupled, host or link stream) |
| 379 | * |
| 380 | * Release the stream that has been assigned by snd_hdac_ext_stream_assign(). |
| 381 | */ |
| 382 | void snd_hdac_ext_stream_release(struct hdac_ext_stream *stream, int type) |
| 383 | { |
| 384 | struct hdac_bus *bus = stream->hstream.bus; |
| 385 | struct hdac_ext_bus *ebus = hbus_to_ebus(bus); |
| 386 | |
| 387 | switch (type) { |
| 388 | case HDAC_EXT_STREAM_TYPE_COUPLED: |
| 389 | snd_hdac_stream_release(&stream->hstream); |
| 390 | break; |
| 391 | |
| 392 | case HDAC_EXT_STREAM_TYPE_HOST: |
Jeeja KP | a04267f | 2015-10-05 15:09:49 +0100 | [diff] [blame] | 393 | if (stream->decoupled && !stream->link_locked) |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 394 | snd_hdac_ext_stream_decouple(ebus, stream, false); |
Jeeja KP | a04267f | 2015-10-05 15:09:49 +0100 | [diff] [blame] | 395 | snd_hdac_stream_release(&stream->hstream); |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 396 | break; |
| 397 | |
| 398 | case HDAC_EXT_STREAM_TYPE_LINK: |
Jeeja KP | a04267f | 2015-10-05 15:09:49 +0100 | [diff] [blame] | 399 | if (stream->decoupled && !stream->hstream.opened) |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 400 | snd_hdac_ext_stream_decouple(ebus, stream, false); |
| 401 | spin_lock_irq(&bus->reg_lock); |
| 402 | stream->link_locked = 0; |
| 403 | stream->link_substream = NULL; |
| 404 | spin_unlock_irq(&bus->reg_lock); |
| 405 | break; |
| 406 | |
| 407 | default: |
| 408 | dev_dbg(bus->dev, "Invalid type %d\n", type); |
| 409 | } |
| 410 | |
| 411 | } |
| 412 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_release); |
| 413 | |
| 414 | /** |
| 415 | * snd_hdac_ext_stream_spbcap_enable - enable SPIB for a stream |
| 416 | * @ebus: HD-audio ext core bus |
| 417 | * @enable: flag to enable/disable SPIB |
| 418 | * @index: stream index for which SPIB need to be enabled |
| 419 | */ |
| 420 | void snd_hdac_ext_stream_spbcap_enable(struct hdac_ext_bus *ebus, |
| 421 | bool enable, int index) |
| 422 | { |
| 423 | u32 mask = 0; |
| 424 | u32 register_mask = 0; |
| 425 | struct hdac_bus *bus = &ebus->bus; |
| 426 | |
| 427 | if (!ebus->spbcap) { |
| 428 | dev_err(bus->dev, "Address of SPB capability is NULL"); |
| 429 | return; |
| 430 | } |
| 431 | |
| 432 | mask |= (1 << index); |
| 433 | |
Jeeja KP | a7e3dd8 | 2015-08-21 21:36:17 +0530 | [diff] [blame] | 434 | register_mask = readl(ebus->spbcap + AZX_REG_SPB_SPBFCCTL); |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 435 | |
| 436 | mask |= register_mask; |
| 437 | |
| 438 | if (enable) |
| 439 | snd_hdac_updatel(ebus->spbcap, AZX_REG_SPB_SPBFCCTL, 0, mask); |
| 440 | else |
| 441 | snd_hdac_updatel(ebus->spbcap, AZX_REG_SPB_SPBFCCTL, mask, 0); |
| 442 | } |
| 443 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_spbcap_enable); |
| 444 | |
| 445 | /** |
Jeeja KP | ee8bc4d | 2015-08-21 21:36:20 +0530 | [diff] [blame] | 446 | * snd_hdac_ext_stream_set_spib - sets the spib value of a stream |
| 447 | * @ebus: HD-audio ext core bus |
| 448 | * @stream: hdac_ext_stream |
| 449 | * @value: spib value to set |
| 450 | */ |
| 451 | int snd_hdac_ext_stream_set_spib(struct hdac_ext_bus *ebus, |
| 452 | struct hdac_ext_stream *stream, u32 value) |
| 453 | { |
| 454 | struct hdac_bus *bus = &ebus->bus; |
| 455 | |
| 456 | if (!ebus->spbcap) { |
| 457 | dev_err(bus->dev, "Address of SPB capability is NULL"); |
| 458 | return -EINVAL; |
| 459 | } |
| 460 | |
| 461 | writel(value, stream->spib_addr); |
| 462 | |
| 463 | return 0; |
| 464 | } |
| 465 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_spib); |
| 466 | |
| 467 | /** |
Vinod Koul | 54d1d2f | 2015-08-23 11:52:50 +0530 | [diff] [blame] | 468 | * snd_hdac_ext_stream_get_spbmaxfifo - gets the spib value of a stream |
Jeeja KP | ee8bc4d | 2015-08-21 21:36:20 +0530 | [diff] [blame] | 469 | * @ebus: HD-audio ext core bus |
| 470 | * @stream: hdac_ext_stream |
| 471 | * |
| 472 | * Return maxfifo for the stream |
| 473 | */ |
Vinod Koul | 54d1d2f | 2015-08-23 11:52:50 +0530 | [diff] [blame] | 474 | int snd_hdac_ext_stream_get_spbmaxfifo(struct hdac_ext_bus *ebus, |
Jeeja KP | ee8bc4d | 2015-08-21 21:36:20 +0530 | [diff] [blame] | 475 | struct hdac_ext_stream *stream) |
| 476 | { |
| 477 | struct hdac_bus *bus = &ebus->bus; |
| 478 | |
| 479 | if (!ebus->spbcap) { |
| 480 | dev_err(bus->dev, "Address of SPB capability is NULL"); |
| 481 | return -EINVAL; |
| 482 | } |
| 483 | |
| 484 | return readl(stream->fifo_addr); |
| 485 | } |
Vinod Koul | 54d1d2f | 2015-08-23 11:52:50 +0530 | [diff] [blame] | 486 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_get_spbmaxfifo); |
Jeeja KP | ee8bc4d | 2015-08-21 21:36:20 +0530 | [diff] [blame] | 487 | |
| 488 | |
| 489 | /** |
Jeeja KP | df203a4 | 2015-06-11 14:11:49 +0530 | [diff] [blame] | 490 | * snd_hdac_ext_stop_streams - stop all stream if running |
| 491 | * @ebus: HD-audio ext core bus |
| 492 | */ |
| 493 | void snd_hdac_ext_stop_streams(struct hdac_ext_bus *ebus) |
| 494 | { |
| 495 | struct hdac_bus *bus = ebus_to_hbus(ebus); |
| 496 | struct hdac_stream *stream; |
| 497 | |
| 498 | if (bus->chip_init) { |
| 499 | list_for_each_entry(stream, &bus->stream_list, list) |
| 500 | snd_hdac_stream_stop(stream); |
| 501 | snd_hdac_bus_stop_chip(bus); |
| 502 | } |
| 503 | } |
| 504 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stop_streams); |
Jeeja KP | a9c48f7 | 2015-12-18 15:11:59 +0530 | [diff] [blame] | 505 | |
| 506 | /** |
| 507 | * snd_hdac_ext_stream_drsm_enable - enable DMA resume for a stream |
| 508 | * @ebus: HD-audio ext core bus |
| 509 | * @enable: flag to enable/disable DRSM |
| 510 | * @index: stream index for which DRSM need to be enabled |
| 511 | */ |
| 512 | void snd_hdac_ext_stream_drsm_enable(struct hdac_ext_bus *ebus, |
| 513 | bool enable, int index) |
| 514 | { |
| 515 | u32 mask = 0; |
| 516 | u32 register_mask = 0; |
| 517 | struct hdac_bus *bus = &ebus->bus; |
| 518 | |
| 519 | if (!ebus->drsmcap) { |
| 520 | dev_err(bus->dev, "Address of DRSM capability is NULL"); |
| 521 | return; |
| 522 | } |
| 523 | |
| 524 | mask |= (1 << index); |
| 525 | |
| 526 | register_mask = readl(ebus->drsmcap + AZX_REG_SPB_SPBFCCTL); |
| 527 | |
| 528 | mask |= register_mask; |
| 529 | |
| 530 | if (enable) |
| 531 | snd_hdac_updatel(ebus->drsmcap, AZX_REG_DRSM_CTL, 0, mask); |
| 532 | else |
| 533 | snd_hdac_updatel(ebus->drsmcap, AZX_REG_DRSM_CTL, mask, 0); |
| 534 | } |
| 535 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_drsm_enable); |
| 536 | |
| 537 | /** |
| 538 | * snd_hdac_ext_stream_set_dpibr - sets the dpibr value of a stream |
| 539 | * @ebus: HD-audio ext core bus |
| 540 | * @stream: hdac_ext_stream |
| 541 | * @value: dpib value to set |
| 542 | */ |
| 543 | int snd_hdac_ext_stream_set_dpibr(struct hdac_ext_bus *ebus, |
| 544 | struct hdac_ext_stream *stream, u32 value) |
| 545 | { |
| 546 | struct hdac_bus *bus = &ebus->bus; |
| 547 | |
| 548 | if (!ebus->drsmcap) { |
| 549 | dev_err(bus->dev, "Address of DRSM capability is NULL"); |
| 550 | return -EINVAL; |
| 551 | } |
| 552 | |
| 553 | writel(value, stream->dpibr_addr); |
| 554 | |
| 555 | return 0; |
| 556 | } |
| 557 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_dpibr); |
| 558 | |
| 559 | /** |
| 560 | * snd_hdac_ext_stream_set_lpib - sets the lpib value of a stream |
| 561 | * @ebus: HD-audio ext core bus |
| 562 | * @stream: hdac_ext_stream |
| 563 | * @value: lpib value to set |
| 564 | */ |
| 565 | int snd_hdac_ext_stream_set_lpib(struct hdac_ext_stream *stream, u32 value) |
| 566 | { |
| 567 | snd_hdac_stream_writel(&stream->hstream, SD_LPIB, value); |
| 568 | |
| 569 | return 0; |
| 570 | } |
| 571 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_lpib); |