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df203a4e JK |
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> | |
e7a3484d | 21 | #include <linux/slab.h> |
df203a4e JK |
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 | ||
ee8bc4df JK |
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 | ||
a9c48f7f JK |
62 | if (ebus->drsmcap) |
63 | stream->dpibr_addr = ebus->drsmcap + AZX_DRSM_BASE + | |
64 | AZX_DRSM_INTERVAL * idx; | |
65 | ||
df203a4e JK |
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 | ||
e7a3484d VK |
71 | /** |
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 | { | |
4a6c5e6a | 107 | struct hdac_stream *s, *_s; |
e7a3484d VK |
108 | struct hdac_ext_stream *stream; |
109 | struct hdac_bus *bus = ebus_to_hbus(ebus); | |
110 | ||
4a6c5e6a | 111 | list_for_each_entry_safe(s, _s, &bus->stream_list, list) { |
e7a3484d | 112 | stream = stream_to_hdac_ext_stream(s); |
88888155 | 113 | snd_hdac_ext_stream_decouple(ebus, stream, false); |
e7a3484d VK |
114 | list_del(&s->list); |
115 | kfree(stream); | |
116 | } | |
117 | } | |
118 | EXPORT_SYMBOL_GPL(snd_hdac_stream_free_all); | |
119 | ||
df203a4e JK |
120 | /** |
121 | * snd_hdac_ext_stream_decouple - decouple the hdac stream | |
122 | * @ebus: HD-audio ext core bus | |
123 | * @stream: HD-audio ext core stream object to initialize | |
124 | * @decouple: flag to decouple | |
125 | */ | |
126 | void snd_hdac_ext_stream_decouple(struct hdac_ext_bus *ebus, | |
127 | struct hdac_ext_stream *stream, bool decouple) | |
128 | { | |
129 | struct hdac_stream *hstream = &stream->hstream; | |
130 | struct hdac_bus *bus = &ebus->bus; | |
131 | ||
132 | spin_lock_irq(&bus->reg_lock); | |
133 | if (decouple) | |
134 | snd_hdac_updatel(ebus->ppcap, AZX_REG_PP_PPCTL, 0, | |
135 | AZX_PPCTL_PROCEN(hstream->index)); | |
136 | else | |
137 | snd_hdac_updatel(ebus->ppcap, AZX_REG_PP_PPCTL, | |
138 | AZX_PPCTL_PROCEN(hstream->index), 0); | |
139 | stream->decoupled = decouple; | |
140 | spin_unlock_irq(&bus->reg_lock); | |
141 | } | |
142 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_decouple); | |
143 | ||
144 | /** | |
145 | * snd_hdac_ext_linkstream_start - start a stream | |
146 | * @stream: HD-audio ext core stream to start | |
147 | */ | |
148 | void snd_hdac_ext_link_stream_start(struct hdac_ext_stream *stream) | |
149 | { | |
150 | snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL, 0, AZX_PPLCCTL_RUN); | |
151 | } | |
152 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_stream_start); | |
153 | ||
154 | /** | |
155 | * snd_hdac_ext_link_stream_clear - stop a stream DMA | |
156 | * @stream: HD-audio ext core stream to stop | |
157 | */ | |
158 | void snd_hdac_ext_link_stream_clear(struct hdac_ext_stream *stream) | |
159 | { | |
160 | snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL, AZX_PPLCCTL_RUN, 0); | |
161 | } | |
162 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_stream_clear); | |
163 | ||
164 | /** | |
165 | * snd_hdac_ext_link_stream_reset - reset a stream | |
166 | * @stream: HD-audio ext core stream to reset | |
167 | */ | |
168 | void snd_hdac_ext_link_stream_reset(struct hdac_ext_stream *stream) | |
169 | { | |
170 | unsigned char val; | |
171 | int timeout; | |
172 | ||
173 | snd_hdac_ext_link_stream_clear(stream); | |
174 | ||
175 | snd_hdac_updatel(stream->pplc_addr, AZX_REG_PPLCCTL, 0, AZX_PPLCCTL_STRST); | |
176 | udelay(3); | |
177 | timeout = 50; | |
178 | do { | |
179 | val = readl(stream->pplc_addr + AZX_REG_PPLCCTL) & | |
180 | AZX_PPLCCTL_STRST; | |
181 | if (val) | |
182 | break; | |
183 | udelay(3); | |
184 | } while (--timeout); | |
185 | val &= ~AZX_PPLCCTL_STRST; | |
186 | writel(val, stream->pplc_addr + AZX_REG_PPLCCTL); | |
187 | udelay(3); | |
188 | ||
189 | timeout = 50; | |
190 | /* waiting for hardware to report that the stream is out of reset */ | |
191 | do { | |
192 | val = readl(stream->pplc_addr + AZX_REG_PPLCCTL) & AZX_PPLCCTL_STRST; | |
193 | if (!val) | |
194 | break; | |
195 | udelay(3); | |
196 | } while (--timeout); | |
197 | ||
198 | } | |
199 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_stream_reset); | |
200 | ||
201 | /** | |
202 | * snd_hdac_ext_link_stream_setup - set up the SD for streaming | |
203 | * @stream: HD-audio ext core stream to set up | |
204 | * @fmt: stream format | |
205 | */ | |
206 | int snd_hdac_ext_link_stream_setup(struct hdac_ext_stream *stream, int fmt) | |
207 | { | |
208 | struct hdac_stream *hstream = &stream->hstream; | |
209 | unsigned int val; | |
210 | ||
211 | /* make sure the run bit is zero for SD */ | |
212 | snd_hdac_ext_link_stream_clear(stream); | |
213 | /* program the stream_tag */ | |
214 | val = readl(stream->pplc_addr + AZX_REG_PPLCCTL); | |
215 | val = (val & ~AZX_PPLCCTL_STRM_MASK) | | |
216 | (hstream->stream_tag << AZX_PPLCCTL_STRM_SHIFT); | |
217 | writel(val, stream->pplc_addr + AZX_REG_PPLCCTL); | |
218 | ||
219 | /* program the stream format */ | |
220 | writew(fmt, stream->pplc_addr + AZX_REG_PPLCFMT); | |
221 | ||
222 | return 0; | |
223 | } | |
224 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_stream_setup); | |
225 | ||
226 | /** | |
227 | * snd_hdac_ext_link_set_stream_id - maps stream id to link output | |
228 | * @link: HD-audio ext link to set up | |
229 | * @stream: stream id | |
230 | */ | |
231 | void snd_hdac_ext_link_set_stream_id(struct hdac_ext_link *link, | |
232 | int stream) | |
233 | { | |
88b19968 | 234 | snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 1 << stream); |
df203a4e JK |
235 | } |
236 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_set_stream_id); | |
237 | ||
238 | /** | |
239 | * snd_hdac_ext_link_clear_stream_id - maps stream id to link output | |
240 | * @link: HD-audio ext link to set up | |
241 | * @stream: stream id | |
242 | */ | |
243 | void snd_hdac_ext_link_clear_stream_id(struct hdac_ext_link *link, | |
244 | int stream) | |
245 | { | |
246 | snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, 0, (1 << stream)); | |
247 | } | |
248 | EXPORT_SYMBOL_GPL(snd_hdac_ext_link_clear_stream_id); | |
249 | ||
250 | static struct hdac_ext_stream * | |
251 | hdac_ext_link_stream_assign(struct hdac_ext_bus *ebus, | |
252 | struct snd_pcm_substream *substream) | |
253 | { | |
254 | struct hdac_ext_stream *res = NULL; | |
255 | struct hdac_stream *stream = NULL; | |
256 | struct hdac_bus *hbus = &ebus->bus; | |
257 | ||
258 | if (!ebus->ppcap) { | |
259 | dev_err(hbus->dev, "stream type not supported\n"); | |
260 | return NULL; | |
261 | } | |
262 | ||
263 | list_for_each_entry(stream, &hbus->stream_list, list) { | |
264 | struct hdac_ext_stream *hstream = container_of(stream, | |
265 | struct hdac_ext_stream, | |
266 | hstream); | |
267 | if (stream->direction != substream->stream) | |
268 | continue; | |
269 | ||
270 | /* check if decoupled stream and not in use is available */ | |
271 | if (hstream->decoupled && !hstream->link_locked) { | |
272 | res = hstream; | |
273 | break; | |
274 | } | |
275 | ||
276 | if (!hstream->link_locked) { | |
277 | snd_hdac_ext_stream_decouple(ebus, hstream, true); | |
278 | res = hstream; | |
279 | break; | |
280 | } | |
281 | } | |
282 | if (res) { | |
283 | spin_lock_irq(&hbus->reg_lock); | |
284 | res->link_locked = 1; | |
285 | res->link_substream = substream; | |
286 | spin_unlock_irq(&hbus->reg_lock); | |
287 | } | |
288 | return res; | |
289 | } | |
290 | ||
291 | static struct hdac_ext_stream * | |
292 | hdac_ext_host_stream_assign(struct hdac_ext_bus *ebus, | |
293 | struct snd_pcm_substream *substream) | |
294 | { | |
295 | struct hdac_ext_stream *res = NULL; | |
296 | struct hdac_stream *stream = NULL; | |
297 | struct hdac_bus *hbus = &ebus->bus; | |
df203a4e JK |
298 | |
299 | if (!ebus->ppcap) { | |
300 | dev_err(hbus->dev, "stream type not supported\n"); | |
301 | return NULL; | |
302 | } | |
303 | ||
df203a4e JK |
304 | list_for_each_entry(stream, &hbus->stream_list, list) { |
305 | struct hdac_ext_stream *hstream = container_of(stream, | |
306 | struct hdac_ext_stream, | |
307 | hstream); | |
308 | if (stream->direction != substream->stream) | |
309 | continue; | |
310 | ||
9b06dc93 | 311 | if (!stream->opened) { |
df203a4e JK |
312 | if (!hstream->decoupled) |
313 | snd_hdac_ext_stream_decouple(ebus, hstream, true); | |
314 | res = hstream; | |
315 | break; | |
316 | } | |
317 | } | |
318 | if (res) { | |
319 | spin_lock_irq(&hbus->reg_lock); | |
320 | res->hstream.opened = 1; | |
321 | res->hstream.running = 0; | |
df203a4e JK |
322 | res->hstream.substream = substream; |
323 | spin_unlock_irq(&hbus->reg_lock); | |
324 | } | |
325 | ||
326 | return res; | |
327 | } | |
328 | ||
329 | /** | |
330 | * snd_hdac_ext_stream_assign - assign a stream for the PCM | |
331 | * @ebus: HD-audio ext core bus | |
332 | * @substream: PCM substream to assign | |
333 | * @type: type of stream (coupled, host or link stream) | |
334 | * | |
335 | * This assigns the stream based on the type (coupled/host/link), for the | |
336 | * given PCM substream, assigns it and returns the stream object | |
337 | * | |
338 | * coupled: Looks for an unused stream | |
339 | * host: Looks for an unused decoupled host stream | |
340 | * link: Looks for an unused decoupled link stream | |
341 | * | |
342 | * If no stream is free, returns NULL. The function tries to keep using | |
343 | * the same stream object when it's used beforehand. when a stream is | |
344 | * decoupled, it becomes a host stream and link stream. | |
345 | */ | |
346 | struct hdac_ext_stream *snd_hdac_ext_stream_assign(struct hdac_ext_bus *ebus, | |
347 | struct snd_pcm_substream *substream, | |
348 | int type) | |
349 | { | |
350 | struct hdac_ext_stream *hstream = NULL; | |
351 | struct hdac_stream *stream = NULL; | |
352 | struct hdac_bus *hbus = &ebus->bus; | |
353 | ||
354 | switch (type) { | |
355 | case HDAC_EXT_STREAM_TYPE_COUPLED: | |
356 | stream = snd_hdac_stream_assign(hbus, substream); | |
357 | if (stream) | |
358 | hstream = container_of(stream, | |
359 | struct hdac_ext_stream, hstream); | |
360 | return hstream; | |
361 | ||
362 | case HDAC_EXT_STREAM_TYPE_HOST: | |
363 | return hdac_ext_host_stream_assign(ebus, substream); | |
364 | ||
365 | case HDAC_EXT_STREAM_TYPE_LINK: | |
366 | return hdac_ext_link_stream_assign(ebus, substream); | |
367 | ||
368 | default: | |
369 | return NULL; | |
370 | } | |
371 | } | |
372 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_assign); | |
373 | ||
374 | /** | |
375 | * snd_hdac_ext_stream_release - release the assigned stream | |
376 | * @stream: HD-audio ext core stream to release | |
377 | * @type: type of stream (coupled, host or link stream) | |
378 | * | |
379 | * Release the stream that has been assigned by snd_hdac_ext_stream_assign(). | |
380 | */ | |
381 | void snd_hdac_ext_stream_release(struct hdac_ext_stream *stream, int type) | |
382 | { | |
383 | struct hdac_bus *bus = stream->hstream.bus; | |
384 | struct hdac_ext_bus *ebus = hbus_to_ebus(bus); | |
385 | ||
386 | switch (type) { | |
387 | case HDAC_EXT_STREAM_TYPE_COUPLED: | |
388 | snd_hdac_stream_release(&stream->hstream); | |
389 | break; | |
390 | ||
391 | case HDAC_EXT_STREAM_TYPE_HOST: | |
a04267fd | 392 | if (stream->decoupled && !stream->link_locked) |
df203a4e | 393 | snd_hdac_ext_stream_decouple(ebus, stream, false); |
a04267fd | 394 | snd_hdac_stream_release(&stream->hstream); |
df203a4e JK |
395 | break; |
396 | ||
397 | case HDAC_EXT_STREAM_TYPE_LINK: | |
a04267fd | 398 | if (stream->decoupled && !stream->hstream.opened) |
df203a4e JK |
399 | snd_hdac_ext_stream_decouple(ebus, stream, false); |
400 | spin_lock_irq(&bus->reg_lock); | |
401 | stream->link_locked = 0; | |
402 | stream->link_substream = NULL; | |
403 | spin_unlock_irq(&bus->reg_lock); | |
404 | break; | |
405 | ||
406 | default: | |
407 | dev_dbg(bus->dev, "Invalid type %d\n", type); | |
408 | } | |
409 | ||
410 | } | |
411 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_release); | |
412 | ||
413 | /** | |
414 | * snd_hdac_ext_stream_spbcap_enable - enable SPIB for a stream | |
415 | * @ebus: HD-audio ext core bus | |
416 | * @enable: flag to enable/disable SPIB | |
417 | * @index: stream index for which SPIB need to be enabled | |
418 | */ | |
419 | void snd_hdac_ext_stream_spbcap_enable(struct hdac_ext_bus *ebus, | |
420 | bool enable, int index) | |
421 | { | |
422 | u32 mask = 0; | |
423 | u32 register_mask = 0; | |
424 | struct hdac_bus *bus = &ebus->bus; | |
425 | ||
426 | if (!ebus->spbcap) { | |
427 | dev_err(bus->dev, "Address of SPB capability is NULL"); | |
428 | return; | |
429 | } | |
430 | ||
431 | mask |= (1 << index); | |
432 | ||
a7e3dd85 | 433 | register_mask = readl(ebus->spbcap + AZX_REG_SPB_SPBFCCTL); |
df203a4e JK |
434 | |
435 | mask |= register_mask; | |
436 | ||
437 | if (enable) | |
438 | snd_hdac_updatel(ebus->spbcap, AZX_REG_SPB_SPBFCCTL, 0, mask); | |
439 | else | |
440 | snd_hdac_updatel(ebus->spbcap, AZX_REG_SPB_SPBFCCTL, mask, 0); | |
441 | } | |
442 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_spbcap_enable); | |
443 | ||
ee8bc4df JK |
444 | /** |
445 | * snd_hdac_ext_stream_set_spib - sets the spib value of a stream | |
446 | * @ebus: HD-audio ext core bus | |
447 | * @stream: hdac_ext_stream | |
448 | * @value: spib value to set | |
449 | */ | |
450 | int snd_hdac_ext_stream_set_spib(struct hdac_ext_bus *ebus, | |
451 | struct hdac_ext_stream *stream, u32 value) | |
452 | { | |
453 | struct hdac_bus *bus = &ebus->bus; | |
454 | ||
455 | if (!ebus->spbcap) { | |
456 | dev_err(bus->dev, "Address of SPB capability is NULL"); | |
457 | return -EINVAL; | |
458 | } | |
459 | ||
460 | writel(value, stream->spib_addr); | |
461 | ||
462 | return 0; | |
463 | } | |
464 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_spib); | |
465 | ||
466 | /** | |
54d1d2f5 | 467 | * snd_hdac_ext_stream_get_spbmaxfifo - gets the spib value of a stream |
ee8bc4df JK |
468 | * @ebus: HD-audio ext core bus |
469 | * @stream: hdac_ext_stream | |
470 | * | |
471 | * Return maxfifo for the stream | |
472 | */ | |
54d1d2f5 | 473 | int snd_hdac_ext_stream_get_spbmaxfifo(struct hdac_ext_bus *ebus, |
ee8bc4df JK |
474 | struct hdac_ext_stream *stream) |
475 | { | |
476 | struct hdac_bus *bus = &ebus->bus; | |
477 | ||
478 | if (!ebus->spbcap) { | |
479 | dev_err(bus->dev, "Address of SPB capability is NULL"); | |
480 | return -EINVAL; | |
481 | } | |
482 | ||
483 | return readl(stream->fifo_addr); | |
484 | } | |
54d1d2f5 | 485 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_get_spbmaxfifo); |
ee8bc4df JK |
486 | |
487 | ||
df203a4e JK |
488 | /** |
489 | * snd_hdac_ext_stop_streams - stop all stream if running | |
490 | * @ebus: HD-audio ext core bus | |
491 | */ | |
492 | void snd_hdac_ext_stop_streams(struct hdac_ext_bus *ebus) | |
493 | { | |
494 | struct hdac_bus *bus = ebus_to_hbus(ebus); | |
495 | struct hdac_stream *stream; | |
496 | ||
497 | if (bus->chip_init) { | |
498 | list_for_each_entry(stream, &bus->stream_list, list) | |
499 | snd_hdac_stream_stop(stream); | |
500 | snd_hdac_bus_stop_chip(bus); | |
501 | } | |
502 | } | |
503 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stop_streams); | |
a9c48f7f JK |
504 | |
505 | /** | |
506 | * snd_hdac_ext_stream_drsm_enable - enable DMA resume for a stream | |
507 | * @ebus: HD-audio ext core bus | |
508 | * @enable: flag to enable/disable DRSM | |
509 | * @index: stream index for which DRSM need to be enabled | |
510 | */ | |
511 | void snd_hdac_ext_stream_drsm_enable(struct hdac_ext_bus *ebus, | |
512 | bool enable, int index) | |
513 | { | |
514 | u32 mask = 0; | |
515 | u32 register_mask = 0; | |
516 | struct hdac_bus *bus = &ebus->bus; | |
517 | ||
518 | if (!ebus->drsmcap) { | |
519 | dev_err(bus->dev, "Address of DRSM capability is NULL"); | |
520 | return; | |
521 | } | |
522 | ||
523 | mask |= (1 << index); | |
524 | ||
525 | register_mask = readl(ebus->drsmcap + AZX_REG_SPB_SPBFCCTL); | |
526 | ||
527 | mask |= register_mask; | |
528 | ||
529 | if (enable) | |
530 | snd_hdac_updatel(ebus->drsmcap, AZX_REG_DRSM_CTL, 0, mask); | |
531 | else | |
532 | snd_hdac_updatel(ebus->drsmcap, AZX_REG_DRSM_CTL, mask, 0); | |
533 | } | |
534 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_drsm_enable); | |
535 | ||
536 | /** | |
537 | * snd_hdac_ext_stream_set_dpibr - sets the dpibr value of a stream | |
538 | * @ebus: HD-audio ext core bus | |
539 | * @stream: hdac_ext_stream | |
540 | * @value: dpib value to set | |
541 | */ | |
542 | int snd_hdac_ext_stream_set_dpibr(struct hdac_ext_bus *ebus, | |
543 | struct hdac_ext_stream *stream, u32 value) | |
544 | { | |
545 | struct hdac_bus *bus = &ebus->bus; | |
546 | ||
547 | if (!ebus->drsmcap) { | |
548 | dev_err(bus->dev, "Address of DRSM capability is NULL"); | |
549 | return -EINVAL; | |
550 | } | |
551 | ||
552 | writel(value, stream->dpibr_addr); | |
553 | ||
554 | return 0; | |
555 | } | |
556 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_dpibr); | |
557 | ||
558 | /** | |
559 | * snd_hdac_ext_stream_set_lpib - sets the lpib value of a stream | |
560 | * @ebus: HD-audio ext core bus | |
561 | * @stream: hdac_ext_stream | |
562 | * @value: lpib value to set | |
563 | */ | |
564 | int snd_hdac_ext_stream_set_lpib(struct hdac_ext_stream *stream, u32 value) | |
565 | { | |
566 | snd_hdac_stream_writel(&stream->hstream, SD_LPIB, value); | |
567 | ||
568 | return 0; | |
569 | } | |
570 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_lpib); |