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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 | { | |
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); | |
88888155 | 114 | snd_hdac_ext_stream_decouple(ebus, stream, false); |
e7a3484d VK |
115 | list_del(&s->list); |
116 | kfree(stream); | |
117 | } | |
118 | } | |
119 | EXPORT_SYMBOL_GPL(snd_hdac_stream_free_all); | |
120 | ||
df203a4e JK |
121 | /** |
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 | { | |
88b19968 | 235 | snd_hdac_updatew(link->ml_addr, AZX_REG_ML_LOSIDV, (1 << stream), 1 << stream); |
df203a4e JK |
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; | |
df203a4e JK |
299 | |
300 | if (!ebus->ppcap) { | |
301 | dev_err(hbus->dev, "stream type not supported\n"); | |
302 | return NULL; | |
303 | } | |
304 | ||
df203a4e JK |
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 | ||
9b06dc93 | 312 | if (!stream->opened) { |
df203a4e JK |
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; | |
df203a4e JK |
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: | |
a04267fd | 393 | if (stream->decoupled && !stream->link_locked) |
df203a4e | 394 | snd_hdac_ext_stream_decouple(ebus, stream, false); |
a04267fd | 395 | snd_hdac_stream_release(&stream->hstream); |
df203a4e JK |
396 | break; |
397 | ||
398 | case HDAC_EXT_STREAM_TYPE_LINK: | |
a04267fd | 399 | if (stream->decoupled && !stream->hstream.opened) |
df203a4e JK |
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 | ||
a7e3dd85 | 434 | register_mask = readl(ebus->spbcap + AZX_REG_SPB_SPBFCCTL); |
df203a4e JK |
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 | ||
ee8bc4df JK |
445 | /** |
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 | /** | |
54d1d2f5 | 468 | * snd_hdac_ext_stream_get_spbmaxfifo - gets the spib value of a stream |
ee8bc4df JK |
469 | * @ebus: HD-audio ext core bus |
470 | * @stream: hdac_ext_stream | |
471 | * | |
472 | * Return maxfifo for the stream | |
473 | */ | |
54d1d2f5 | 474 | int snd_hdac_ext_stream_get_spbmaxfifo(struct hdac_ext_bus *ebus, |
ee8bc4df JK |
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 | } | |
54d1d2f5 | 486 | EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_get_spbmaxfifo); |
ee8bc4df JK |
487 | |
488 | ||
df203a4e JK |
489 | /** |
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); | |
a9c48f7f JK |
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); |