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Commit | Line | Data |
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05e84878 DR |
1 | /* |
2 | * | |
3 | * Implementation of primary alsa driver code base for Intel HD Audio. | |
4 | * | |
5 | * Copyright(c) 2004 Intel Corporation. All rights reserved. | |
6 | * | |
7 | * Copyright (c) 2004 Takashi Iwai <tiwai@suse.de> | |
8 | * PeiSen Hou <pshou@realtek.com.tw> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the Free | |
12 | * Software Foundation; either version 2 of the License, or (at your option) | |
13 | * any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
16 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
18 | * more details. | |
19 | * | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/clocksource.h> | |
24 | #include <linux/delay.h> | |
f0b1df88 | 25 | #include <linux/interrupt.h> |
05e84878 DR |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
154867cf | 28 | #include <linux/pm_runtime.h> |
05e84878 DR |
29 | #include <linux/slab.h> |
30 | #include <sound/core.h> | |
31 | #include <sound/initval.h> | |
05e84878 DR |
32 | #include "hda_controller.h" |
33 | ||
34 | #define CREATE_TRACE_POINTS | |
35 | #include "hda_intel_trace.h" | |
36 | ||
2b5fd6c2 DR |
37 | /* DSP lock helpers */ |
38 | #ifdef CONFIG_SND_HDA_DSP_LOADER | |
39 | #define dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex) | |
40 | #define dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex) | |
41 | #define dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex) | |
42 | #define dsp_is_locked(dev) ((dev)->locked) | |
43 | #else | |
44 | #define dsp_lock_init(dev) do {} while (0) | |
45 | #define dsp_lock(dev) do {} while (0) | |
46 | #define dsp_unlock(dev) do {} while (0) | |
47 | #define dsp_is_locked(dev) 0 | |
48 | #endif | |
49 | ||
05e84878 DR |
50 | /* |
51 | * AZX stream operations. | |
52 | */ | |
53 | ||
54 | /* start a stream */ | |
2b5fd6c2 | 55 | static void azx_stream_start(struct azx *chip, struct azx_dev *azx_dev) |
05e84878 DR |
56 | { |
57 | /* | |
58 | * Before stream start, initialize parameter | |
59 | */ | |
60 | azx_dev->insufficient = 1; | |
61 | ||
62 | /* enable SIE */ | |
63 | azx_writel(chip, INTCTL, | |
64 | azx_readl(chip, INTCTL) | (1 << azx_dev->index)); | |
65 | /* set DMA start and interrupt mask */ | |
66 | azx_sd_writeb(chip, azx_dev, SD_CTL, | |
67 | azx_sd_readb(chip, azx_dev, SD_CTL) | | |
68 | SD_CTL_DMA_START | SD_INT_MASK); | |
69 | } | |
05e84878 DR |
70 | |
71 | /* stop DMA */ | |
72 | static void azx_stream_clear(struct azx *chip, struct azx_dev *azx_dev) | |
73 | { | |
74 | azx_sd_writeb(chip, azx_dev, SD_CTL, | |
75 | azx_sd_readb(chip, azx_dev, SD_CTL) & | |
76 | ~(SD_CTL_DMA_START | SD_INT_MASK)); | |
77 | azx_sd_writeb(chip, azx_dev, SD_STS, SD_INT_MASK); /* to be sure */ | |
78 | } | |
79 | ||
80 | /* stop a stream */ | |
81 | void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev) | |
82 | { | |
83 | azx_stream_clear(chip, azx_dev); | |
84 | /* disable SIE */ | |
85 | azx_writel(chip, INTCTL, | |
86 | azx_readl(chip, INTCTL) & ~(1 << azx_dev->index)); | |
87 | } | |
88 | EXPORT_SYMBOL_GPL(azx_stream_stop); | |
89 | ||
90 | /* reset stream */ | |
2b5fd6c2 | 91 | static void azx_stream_reset(struct azx *chip, struct azx_dev *azx_dev) |
05e84878 DR |
92 | { |
93 | unsigned char val; | |
94 | int timeout; | |
95 | ||
96 | azx_stream_clear(chip, azx_dev); | |
97 | ||
98 | azx_sd_writeb(chip, azx_dev, SD_CTL, | |
99 | azx_sd_readb(chip, azx_dev, SD_CTL) | | |
100 | SD_CTL_STREAM_RESET); | |
101 | udelay(3); | |
102 | timeout = 300; | |
103 | while (!((val = azx_sd_readb(chip, azx_dev, SD_CTL)) & | |
104 | SD_CTL_STREAM_RESET) && --timeout) | |
105 | ; | |
106 | val &= ~SD_CTL_STREAM_RESET; | |
107 | azx_sd_writeb(chip, azx_dev, SD_CTL, val); | |
108 | udelay(3); | |
109 | ||
110 | timeout = 300; | |
111 | /* waiting for hardware to report that the stream is out of reset */ | |
112 | while (((val = azx_sd_readb(chip, azx_dev, SD_CTL)) & | |
113 | SD_CTL_STREAM_RESET) && --timeout) | |
114 | ; | |
115 | ||
116 | /* reset first position - may not be synced with hw at this time */ | |
117 | *azx_dev->posbuf = 0; | |
118 | } | |
05e84878 DR |
119 | |
120 | /* | |
121 | * set up the SD for streaming | |
122 | */ | |
2b5fd6c2 | 123 | static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev) |
05e84878 DR |
124 | { |
125 | unsigned int val; | |
126 | /* make sure the run bit is zero for SD */ | |
127 | azx_stream_clear(chip, azx_dev); | |
128 | /* program the stream_tag */ | |
129 | val = azx_sd_readl(chip, azx_dev, SD_CTL); | |
130 | val = (val & ~SD_CTL_STREAM_TAG_MASK) | | |
131 | (azx_dev->stream_tag << SD_CTL_STREAM_TAG_SHIFT); | |
132 | if (!azx_snoop(chip)) | |
133 | val |= SD_CTL_TRAFFIC_PRIO; | |
134 | azx_sd_writel(chip, azx_dev, SD_CTL, val); | |
135 | ||
136 | /* program the length of samples in cyclic buffer */ | |
137 | azx_sd_writel(chip, azx_dev, SD_CBL, azx_dev->bufsize); | |
138 | ||
139 | /* program the stream format */ | |
140 | /* this value needs to be the same as the one programmed */ | |
141 | azx_sd_writew(chip, azx_dev, SD_FORMAT, azx_dev->format_val); | |
142 | ||
143 | /* program the stream LVI (last valid index) of the BDL */ | |
144 | azx_sd_writew(chip, azx_dev, SD_LVI, azx_dev->frags - 1); | |
145 | ||
146 | /* program the BDL address */ | |
147 | /* lower BDL address */ | |
148 | azx_sd_writel(chip, azx_dev, SD_BDLPL, (u32)azx_dev->bdl.addr); | |
149 | /* upper BDL address */ | |
150 | azx_sd_writel(chip, azx_dev, SD_BDLPU, | |
151 | upper_32_bits(azx_dev->bdl.addr)); | |
152 | ||
153 | /* enable the position buffer */ | |
b6050ef6 TI |
154 | if (chip->get_position[0] != azx_get_pos_lpib || |
155 | chip->get_position[1] != azx_get_pos_lpib) { | |
fb1d8ac2 | 156 | if (!(azx_readl(chip, DPLBASE) & AZX_DPLBASE_ENABLE)) |
05e84878 | 157 | azx_writel(chip, DPLBASE, |
fb1d8ac2 | 158 | (u32)chip->posbuf.addr | AZX_DPLBASE_ENABLE); |
05e84878 DR |
159 | } |
160 | ||
161 | /* set the interrupt enable bits in the descriptor control register */ | |
162 | azx_sd_writel(chip, azx_dev, SD_CTL, | |
163 | azx_sd_readl(chip, azx_dev, SD_CTL) | SD_INT_MASK); | |
164 | ||
165 | return 0; | |
166 | } | |
05e84878 DR |
167 | |
168 | /* assign a stream for the PCM */ | |
169 | static inline struct azx_dev * | |
170 | azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream) | |
171 | { | |
172 | int dev, i, nums; | |
173 | struct azx_dev *res = NULL; | |
174 | /* make a non-zero unique key for the substream */ | |
175 | int key = (substream->pcm->device << 16) | (substream->number << 2) | | |
176 | (substream->stream + 1); | |
177 | ||
178 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
179 | dev = chip->playback_index_offset; | |
180 | nums = chip->playback_streams; | |
181 | } else { | |
182 | dev = chip->capture_index_offset; | |
183 | nums = chip->capture_streams; | |
184 | } | |
185 | for (i = 0; i < nums; i++, dev++) { | |
186 | struct azx_dev *azx_dev = &chip->azx_dev[dev]; | |
187 | dsp_lock(azx_dev); | |
188 | if (!azx_dev->opened && !dsp_is_locked(azx_dev)) { | |
dcb32ecd AH |
189 | if (azx_dev->assigned_key == key) { |
190 | azx_dev->opened = 1; | |
191 | azx_dev->assigned_key = key; | |
05e84878 DR |
192 | dsp_unlock(azx_dev); |
193 | return azx_dev; | |
194 | } | |
cd50065b TI |
195 | if (!res || |
196 | (chip->driver_caps & AZX_DCAPS_REVERSE_ASSIGN)) | |
dcb32ecd | 197 | res = azx_dev; |
05e84878 DR |
198 | } |
199 | dsp_unlock(azx_dev); | |
200 | } | |
201 | if (res) { | |
202 | dsp_lock(res); | |
203 | res->opened = 1; | |
204 | res->assigned_key = key; | |
205 | dsp_unlock(res); | |
206 | } | |
207 | return res; | |
208 | } | |
209 | ||
210 | /* release the assigned stream */ | |
211 | static inline void azx_release_device(struct azx_dev *azx_dev) | |
212 | { | |
213 | azx_dev->opened = 0; | |
214 | } | |
215 | ||
216 | static cycle_t azx_cc_read(const struct cyclecounter *cc) | |
217 | { | |
218 | struct azx_dev *azx_dev = container_of(cc, struct azx_dev, azx_cc); | |
219 | struct snd_pcm_substream *substream = azx_dev->substream; | |
220 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
221 | struct azx *chip = apcm->chip; | |
222 | ||
223 | return azx_readl(chip, WALLCLK); | |
224 | } | |
225 | ||
226 | static void azx_timecounter_init(struct snd_pcm_substream *substream, | |
227 | bool force, cycle_t last) | |
228 | { | |
229 | struct azx_dev *azx_dev = get_azx_dev(substream); | |
230 | struct timecounter *tc = &azx_dev->azx_tc; | |
231 | struct cyclecounter *cc = &azx_dev->azx_cc; | |
232 | u64 nsec; | |
233 | ||
234 | cc->read = azx_cc_read; | |
235 | cc->mask = CLOCKSOURCE_MASK(32); | |
236 | ||
237 | /* | |
238 | * Converting from 24 MHz to ns means applying a 125/3 factor. | |
239 | * To avoid any saturation issues in intermediate operations, | |
240 | * the 125 factor is applied first. The division is applied | |
241 | * last after reading the timecounter value. | |
242 | * Applying the 1/3 factor as part of the multiplication | |
243 | * requires at least 20 bits for a decent precision, however | |
244 | * overflows occur after about 4 hours or less, not a option. | |
245 | */ | |
246 | ||
247 | cc->mult = 125; /* saturation after 195 years */ | |
248 | cc->shift = 0; | |
249 | ||
250 | nsec = 0; /* audio time is elapsed time since trigger */ | |
251 | timecounter_init(tc, cc, nsec); | |
252 | if (force) | |
253 | /* | |
254 | * force timecounter to use predefined value, | |
255 | * used for synchronized starts | |
256 | */ | |
257 | tc->cycle_last = last; | |
258 | } | |
259 | ||
820cc6cf TI |
260 | static inline struct hda_pcm_stream * |
261 | to_hda_pcm_stream(struct snd_pcm_substream *substream) | |
262 | { | |
263 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
264 | return &apcm->info->stream[substream->stream]; | |
265 | } | |
266 | ||
05e84878 DR |
267 | static u64 azx_adjust_codec_delay(struct snd_pcm_substream *substream, |
268 | u64 nsec) | |
269 | { | |
270 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
820cc6cf | 271 | struct hda_pcm_stream *hinfo = to_hda_pcm_stream(substream); |
05e84878 DR |
272 | u64 codec_frames, codec_nsecs; |
273 | ||
274 | if (!hinfo->ops.get_delay) | |
275 | return nsec; | |
276 | ||
277 | codec_frames = hinfo->ops.get_delay(hinfo, apcm->codec, substream); | |
278 | codec_nsecs = div_u64(codec_frames * 1000000000LL, | |
279 | substream->runtime->rate); | |
280 | ||
281 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
282 | return nsec + codec_nsecs; | |
283 | ||
284 | return (nsec > codec_nsecs) ? nsec - codec_nsecs : 0; | |
285 | } | |
286 | ||
287 | /* | |
288 | * set up a BDL entry | |
289 | */ | |
2b5fd6c2 DR |
290 | static int setup_bdle(struct azx *chip, |
291 | struct snd_dma_buffer *dmab, | |
292 | struct azx_dev *azx_dev, u32 **bdlp, | |
293 | int ofs, int size, int with_ioc) | |
05e84878 DR |
294 | { |
295 | u32 *bdl = *bdlp; | |
296 | ||
297 | while (size > 0) { | |
298 | dma_addr_t addr; | |
299 | int chunk; | |
300 | ||
301 | if (azx_dev->frags >= AZX_MAX_BDL_ENTRIES) | |
302 | return -EINVAL; | |
303 | ||
304 | addr = snd_sgbuf_get_addr(dmab, ofs); | |
305 | /* program the address field of the BDL entry */ | |
306 | bdl[0] = cpu_to_le32((u32)addr); | |
307 | bdl[1] = cpu_to_le32(upper_32_bits(addr)); | |
308 | /* program the size field of the BDL entry */ | |
309 | chunk = snd_sgbuf_get_chunk_size(dmab, ofs, size); | |
310 | /* one BDLE cannot cross 4K boundary on CTHDA chips */ | |
311 | if (chip->driver_caps & AZX_DCAPS_4K_BDLE_BOUNDARY) { | |
312 | u32 remain = 0x1000 - (ofs & 0xfff); | |
313 | if (chunk > remain) | |
314 | chunk = remain; | |
315 | } | |
316 | bdl[2] = cpu_to_le32(chunk); | |
317 | /* program the IOC to enable interrupt | |
318 | * only when the whole fragment is processed | |
319 | */ | |
320 | size -= chunk; | |
321 | bdl[3] = (size || !with_ioc) ? 0 : cpu_to_le32(0x01); | |
322 | bdl += 4; | |
323 | azx_dev->frags++; | |
324 | ofs += chunk; | |
325 | } | |
326 | *bdlp = bdl; | |
327 | return ofs; | |
328 | } | |
05e84878 DR |
329 | |
330 | /* | |
331 | * set up BDL entries | |
332 | */ | |
333 | static int azx_setup_periods(struct azx *chip, | |
334 | struct snd_pcm_substream *substream, | |
335 | struct azx_dev *azx_dev) | |
336 | { | |
337 | u32 *bdl; | |
338 | int i, ofs, periods, period_bytes; | |
339 | int pos_adj = 0; | |
340 | ||
341 | /* reset BDL address */ | |
342 | azx_sd_writel(chip, azx_dev, SD_BDLPL, 0); | |
343 | azx_sd_writel(chip, azx_dev, SD_BDLPU, 0); | |
344 | ||
345 | period_bytes = azx_dev->period_bytes; | |
346 | periods = azx_dev->bufsize / period_bytes; | |
347 | ||
348 | /* program the initial BDL entries */ | |
349 | bdl = (u32 *)azx_dev->bdl.area; | |
350 | ofs = 0; | |
351 | azx_dev->frags = 0; | |
352 | ||
353 | if (chip->bdl_pos_adj) | |
354 | pos_adj = chip->bdl_pos_adj[chip->dev_index]; | |
355 | if (!azx_dev->no_period_wakeup && pos_adj > 0) { | |
356 | struct snd_pcm_runtime *runtime = substream->runtime; | |
357 | int pos_align = pos_adj; | |
358 | pos_adj = (pos_adj * runtime->rate + 47999) / 48000; | |
359 | if (!pos_adj) | |
360 | pos_adj = pos_align; | |
361 | else | |
362 | pos_adj = ((pos_adj + pos_align - 1) / pos_align) * | |
363 | pos_align; | |
364 | pos_adj = frames_to_bytes(runtime, pos_adj); | |
365 | if (pos_adj >= period_bytes) { | |
366 | dev_warn(chip->card->dev,"Too big adjustment %d\n", | |
367 | pos_adj); | |
368 | pos_adj = 0; | |
369 | } else { | |
370 | ofs = setup_bdle(chip, snd_pcm_get_dma_buf(substream), | |
371 | azx_dev, | |
372 | &bdl, ofs, pos_adj, true); | |
373 | if (ofs < 0) | |
374 | goto error; | |
375 | } | |
376 | } else | |
377 | pos_adj = 0; | |
378 | ||
379 | for (i = 0; i < periods; i++) { | |
380 | if (i == periods - 1 && pos_adj) | |
381 | ofs = setup_bdle(chip, snd_pcm_get_dma_buf(substream), | |
382 | azx_dev, &bdl, ofs, | |
383 | period_bytes - pos_adj, 0); | |
384 | else | |
385 | ofs = setup_bdle(chip, snd_pcm_get_dma_buf(substream), | |
386 | azx_dev, &bdl, ofs, | |
387 | period_bytes, | |
388 | !azx_dev->no_period_wakeup); | |
389 | if (ofs < 0) | |
390 | goto error; | |
391 | } | |
392 | return 0; | |
393 | ||
394 | error: | |
395 | dev_err(chip->card->dev, "Too many BDL entries: buffer=%d, period=%d\n", | |
396 | azx_dev->bufsize, period_bytes); | |
397 | return -EINVAL; | |
398 | } | |
399 | ||
400 | /* | |
401 | * PCM ops | |
402 | */ | |
403 | ||
404 | static int azx_pcm_close(struct snd_pcm_substream *substream) | |
405 | { | |
406 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
820cc6cf | 407 | struct hda_pcm_stream *hinfo = to_hda_pcm_stream(substream); |
05e84878 DR |
408 | struct azx *chip = apcm->chip; |
409 | struct azx_dev *azx_dev = get_azx_dev(substream); | |
410 | unsigned long flags; | |
411 | ||
412 | mutex_lock(&chip->open_mutex); | |
413 | spin_lock_irqsave(&chip->reg_lock, flags); | |
414 | azx_dev->substream = NULL; | |
415 | azx_dev->running = 0; | |
416 | spin_unlock_irqrestore(&chip->reg_lock, flags); | |
417 | azx_release_device(azx_dev); | |
61ca4107 TI |
418 | if (hinfo->ops.close) |
419 | hinfo->ops.close(hinfo, apcm->codec, substream); | |
05e84878 DR |
420 | snd_hda_power_down(apcm->codec); |
421 | mutex_unlock(&chip->open_mutex); | |
9a6246ff | 422 | snd_hda_codec_pcm_put(apcm->info); |
05e84878 DR |
423 | return 0; |
424 | } | |
425 | ||
426 | static int azx_pcm_hw_params(struct snd_pcm_substream *substream, | |
427 | struct snd_pcm_hw_params *hw_params) | |
428 | { | |
429 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
430 | struct azx *chip = apcm->chip; | |
431 | int ret; | |
432 | ||
433 | dsp_lock(get_azx_dev(substream)); | |
434 | if (dsp_is_locked(get_azx_dev(substream))) { | |
435 | ret = -EBUSY; | |
436 | goto unlock; | |
437 | } | |
438 | ||
439 | ret = chip->ops->substream_alloc_pages(chip, substream, | |
440 | params_buffer_bytes(hw_params)); | |
441 | unlock: | |
442 | dsp_unlock(get_azx_dev(substream)); | |
443 | return ret; | |
444 | } | |
445 | ||
446 | static int azx_pcm_hw_free(struct snd_pcm_substream *substream) | |
447 | { | |
448 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
449 | struct azx_dev *azx_dev = get_azx_dev(substream); | |
450 | struct azx *chip = apcm->chip; | |
820cc6cf | 451 | struct hda_pcm_stream *hinfo = to_hda_pcm_stream(substream); |
05e84878 DR |
452 | int err; |
453 | ||
454 | /* reset BDL address */ | |
455 | dsp_lock(azx_dev); | |
456 | if (!dsp_is_locked(azx_dev)) { | |
457 | azx_sd_writel(chip, azx_dev, SD_BDLPL, 0); | |
458 | azx_sd_writel(chip, azx_dev, SD_BDLPU, 0); | |
459 | azx_sd_writel(chip, azx_dev, SD_CTL, 0); | |
460 | azx_dev->bufsize = 0; | |
461 | azx_dev->period_bytes = 0; | |
462 | azx_dev->format_val = 0; | |
463 | } | |
464 | ||
465 | snd_hda_codec_cleanup(apcm->codec, hinfo, substream); | |
466 | ||
467 | err = chip->ops->substream_free_pages(chip, substream); | |
468 | azx_dev->prepared = 0; | |
469 | dsp_unlock(azx_dev); | |
470 | return err; | |
471 | } | |
472 | ||
473 | static int azx_pcm_prepare(struct snd_pcm_substream *substream) | |
474 | { | |
475 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
476 | struct azx *chip = apcm->chip; | |
477 | struct azx_dev *azx_dev = get_azx_dev(substream); | |
820cc6cf | 478 | struct hda_pcm_stream *hinfo = to_hda_pcm_stream(substream); |
05e84878 DR |
479 | struct snd_pcm_runtime *runtime = substream->runtime; |
480 | unsigned int bufsize, period_bytes, format_val, stream_tag; | |
481 | int err; | |
482 | struct hda_spdif_out *spdif = | |
483 | snd_hda_spdif_out_of_nid(apcm->codec, hinfo->nid); | |
484 | unsigned short ctls = spdif ? spdif->ctls : 0; | |
485 | ||
486 | dsp_lock(azx_dev); | |
487 | if (dsp_is_locked(azx_dev)) { | |
488 | err = -EBUSY; | |
489 | goto unlock; | |
490 | } | |
491 | ||
492 | azx_stream_reset(chip, azx_dev); | |
6194b99d TI |
493 | format_val = snd_hda_calc_stream_format(apcm->codec, |
494 | runtime->rate, | |
05e84878 DR |
495 | runtime->channels, |
496 | runtime->format, | |
497 | hinfo->maxbps, | |
498 | ctls); | |
499 | if (!format_val) { | |
500 | dev_err(chip->card->dev, | |
501 | "invalid format_val, rate=%d, ch=%d, format=%d\n", | |
502 | runtime->rate, runtime->channels, runtime->format); | |
503 | err = -EINVAL; | |
504 | goto unlock; | |
505 | } | |
506 | ||
507 | bufsize = snd_pcm_lib_buffer_bytes(substream); | |
508 | period_bytes = snd_pcm_lib_period_bytes(substream); | |
509 | ||
510 | dev_dbg(chip->card->dev, "azx_pcm_prepare: bufsize=0x%x, format=0x%x\n", | |
511 | bufsize, format_val); | |
512 | ||
513 | if (bufsize != azx_dev->bufsize || | |
514 | period_bytes != azx_dev->period_bytes || | |
515 | format_val != azx_dev->format_val || | |
516 | runtime->no_period_wakeup != azx_dev->no_period_wakeup) { | |
517 | azx_dev->bufsize = bufsize; | |
518 | azx_dev->period_bytes = period_bytes; | |
519 | azx_dev->format_val = format_val; | |
520 | azx_dev->no_period_wakeup = runtime->no_period_wakeup; | |
521 | err = azx_setup_periods(chip, substream, azx_dev); | |
522 | if (err < 0) | |
523 | goto unlock; | |
524 | } | |
525 | ||
526 | /* when LPIB delay correction gives a small negative value, | |
527 | * we ignore it; currently set the threshold statically to | |
528 | * 64 frames | |
529 | */ | |
530 | if (runtime->period_size > 64) | |
531 | azx_dev->delay_negative_threshold = -frames_to_bytes(runtime, 64); | |
532 | else | |
533 | azx_dev->delay_negative_threshold = 0; | |
534 | ||
535 | /* wallclk has 24Mhz clock source */ | |
536 | azx_dev->period_wallclk = (((runtime->period_size * 24000) / | |
537 | runtime->rate) * 1000); | |
538 | azx_setup_controller(chip, azx_dev); | |
539 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
540 | azx_dev->fifo_size = | |
541 | azx_sd_readw(chip, azx_dev, SD_FIFOSIZE) + 1; | |
542 | else | |
543 | azx_dev->fifo_size = 0; | |
544 | ||
545 | stream_tag = azx_dev->stream_tag; | |
546 | /* CA-IBG chips need the playback stream starting from 1 */ | |
547 | if ((chip->driver_caps & AZX_DCAPS_CTX_WORKAROUND) && | |
548 | stream_tag > chip->capture_streams) | |
549 | stream_tag -= chip->capture_streams; | |
550 | err = snd_hda_codec_prepare(apcm->codec, hinfo, stream_tag, | |
551 | azx_dev->format_val, substream); | |
552 | ||
553 | unlock: | |
554 | if (!err) | |
555 | azx_dev->prepared = 1; | |
556 | dsp_unlock(azx_dev); | |
557 | return err; | |
558 | } | |
559 | ||
560 | static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) | |
561 | { | |
562 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
563 | struct azx *chip = apcm->chip; | |
564 | struct azx_dev *azx_dev; | |
565 | struct snd_pcm_substream *s; | |
566 | int rstart = 0, start, nsync = 0, sbits = 0; | |
567 | int nwait, timeout; | |
568 | ||
569 | azx_dev = get_azx_dev(substream); | |
570 | trace_azx_pcm_trigger(chip, azx_dev, cmd); | |
571 | ||
572 | if (dsp_is_locked(azx_dev) || !azx_dev->prepared) | |
573 | return -EPIPE; | |
574 | ||
575 | switch (cmd) { | |
576 | case SNDRV_PCM_TRIGGER_START: | |
577 | rstart = 1; | |
578 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
579 | case SNDRV_PCM_TRIGGER_RESUME: | |
580 | start = 1; | |
581 | break; | |
582 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
583 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
584 | case SNDRV_PCM_TRIGGER_STOP: | |
585 | start = 0; | |
586 | break; | |
587 | default: | |
588 | return -EINVAL; | |
589 | } | |
590 | ||
591 | snd_pcm_group_for_each_entry(s, substream) { | |
592 | if (s->pcm->card != substream->pcm->card) | |
593 | continue; | |
594 | azx_dev = get_azx_dev(s); | |
595 | sbits |= 1 << azx_dev->index; | |
596 | nsync++; | |
597 | snd_pcm_trigger_done(s, substream); | |
598 | } | |
599 | ||
600 | spin_lock(&chip->reg_lock); | |
601 | ||
602 | /* first, set SYNC bits of corresponding streams */ | |
603 | if (chip->driver_caps & AZX_DCAPS_OLD_SSYNC) | |
604 | azx_writel(chip, OLD_SSYNC, | |
605 | azx_readl(chip, OLD_SSYNC) | sbits); | |
606 | else | |
607 | azx_writel(chip, SSYNC, azx_readl(chip, SSYNC) | sbits); | |
608 | ||
609 | snd_pcm_group_for_each_entry(s, substream) { | |
610 | if (s->pcm->card != substream->pcm->card) | |
611 | continue; | |
612 | azx_dev = get_azx_dev(s); | |
613 | if (start) { | |
614 | azx_dev->start_wallclk = azx_readl(chip, WALLCLK); | |
615 | if (!rstart) | |
616 | azx_dev->start_wallclk -= | |
617 | azx_dev->period_wallclk; | |
618 | azx_stream_start(chip, azx_dev); | |
619 | } else { | |
620 | azx_stream_stop(chip, azx_dev); | |
621 | } | |
622 | azx_dev->running = start; | |
623 | } | |
624 | spin_unlock(&chip->reg_lock); | |
625 | if (start) { | |
626 | /* wait until all FIFOs get ready */ | |
627 | for (timeout = 5000; timeout; timeout--) { | |
628 | nwait = 0; | |
629 | snd_pcm_group_for_each_entry(s, substream) { | |
630 | if (s->pcm->card != substream->pcm->card) | |
631 | continue; | |
632 | azx_dev = get_azx_dev(s); | |
633 | if (!(azx_sd_readb(chip, azx_dev, SD_STS) & | |
634 | SD_STS_FIFO_READY)) | |
635 | nwait++; | |
636 | } | |
637 | if (!nwait) | |
638 | break; | |
639 | cpu_relax(); | |
640 | } | |
641 | } else { | |
642 | /* wait until all RUN bits are cleared */ | |
643 | for (timeout = 5000; timeout; timeout--) { | |
644 | nwait = 0; | |
645 | snd_pcm_group_for_each_entry(s, substream) { | |
646 | if (s->pcm->card != substream->pcm->card) | |
647 | continue; | |
648 | azx_dev = get_azx_dev(s); | |
649 | if (azx_sd_readb(chip, azx_dev, SD_CTL) & | |
650 | SD_CTL_DMA_START) | |
651 | nwait++; | |
652 | } | |
653 | if (!nwait) | |
654 | break; | |
655 | cpu_relax(); | |
656 | } | |
657 | } | |
658 | spin_lock(&chip->reg_lock); | |
659 | /* reset SYNC bits */ | |
660 | if (chip->driver_caps & AZX_DCAPS_OLD_SSYNC) | |
661 | azx_writel(chip, OLD_SSYNC, | |
662 | azx_readl(chip, OLD_SSYNC) & ~sbits); | |
663 | else | |
664 | azx_writel(chip, SSYNC, azx_readl(chip, SSYNC) & ~sbits); | |
665 | if (start) { | |
666 | azx_timecounter_init(substream, 0, 0); | |
ed610af8 PLB |
667 | snd_pcm_gettime(substream->runtime, &substream->runtime->trigger_tstamp); |
668 | substream->runtime->trigger_tstamp_latched = true; | |
669 | ||
05e84878 DR |
670 | if (nsync > 1) { |
671 | cycle_t cycle_last; | |
672 | ||
673 | /* same start cycle for master and group */ | |
674 | azx_dev = get_azx_dev(substream); | |
675 | cycle_last = azx_dev->azx_tc.cycle_last; | |
676 | ||
677 | snd_pcm_group_for_each_entry(s, substream) { | |
678 | if (s->pcm->card != substream->pcm->card) | |
679 | continue; | |
680 | azx_timecounter_init(s, 1, cycle_last); | |
681 | } | |
682 | } | |
683 | } | |
684 | spin_unlock(&chip->reg_lock); | |
685 | return 0; | |
686 | } | |
687 | ||
b6050ef6 | 688 | unsigned int azx_get_pos_lpib(struct azx *chip, struct azx_dev *azx_dev) |
05e84878 | 689 | { |
b6050ef6 TI |
690 | return azx_sd_readl(chip, azx_dev, SD_LPIB); |
691 | } | |
692 | EXPORT_SYMBOL_GPL(azx_get_pos_lpib); | |
05e84878 | 693 | |
b6050ef6 TI |
694 | unsigned int azx_get_pos_posbuf(struct azx *chip, struct azx_dev *azx_dev) |
695 | { | |
696 | return le32_to_cpu(*azx_dev->posbuf); | |
05e84878 | 697 | } |
b6050ef6 | 698 | EXPORT_SYMBOL_GPL(azx_get_pos_posbuf); |
05e84878 DR |
699 | |
700 | unsigned int azx_get_position(struct azx *chip, | |
b6050ef6 | 701 | struct azx_dev *azx_dev) |
05e84878 DR |
702 | { |
703 | struct snd_pcm_substream *substream = azx_dev->substream; | |
05e84878 DR |
704 | unsigned int pos; |
705 | int stream = substream->stream; | |
05e84878 DR |
706 | int delay = 0; |
707 | ||
b6050ef6 TI |
708 | if (chip->get_position[stream]) |
709 | pos = chip->get_position[stream](chip, azx_dev); | |
710 | else /* use the position buffer as default */ | |
711 | pos = azx_get_pos_posbuf(chip, azx_dev); | |
05e84878 DR |
712 | |
713 | if (pos >= azx_dev->bufsize) | |
714 | pos = 0; | |
715 | ||
05e84878 | 716 | if (substream->runtime) { |
b6050ef6 | 717 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); |
820cc6cf | 718 | struct hda_pcm_stream *hinfo = to_hda_pcm_stream(substream); |
b6050ef6 TI |
719 | |
720 | if (chip->get_delay[stream]) | |
721 | delay += chip->get_delay[stream](chip, azx_dev, pos); | |
05e84878 DR |
722 | if (hinfo->ops.get_delay) |
723 | delay += hinfo->ops.get_delay(hinfo, apcm->codec, | |
724 | substream); | |
725 | substream->runtime->delay = delay; | |
726 | } | |
727 | ||
728 | trace_azx_get_position(chip, azx_dev, pos, delay); | |
729 | return pos; | |
730 | } | |
731 | EXPORT_SYMBOL_GPL(azx_get_position); | |
732 | ||
733 | static snd_pcm_uframes_t azx_pcm_pointer(struct snd_pcm_substream *substream) | |
734 | { | |
735 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
736 | struct azx *chip = apcm->chip; | |
737 | struct azx_dev *azx_dev = get_azx_dev(substream); | |
738 | return bytes_to_frames(substream->runtime, | |
b6050ef6 | 739 | azx_get_position(chip, azx_dev)); |
05e84878 DR |
740 | } |
741 | ||
9e94df3a PLB |
742 | static int azx_get_time_info(struct snd_pcm_substream *substream, |
743 | struct timespec *system_ts, struct timespec *audio_ts, | |
744 | struct snd_pcm_audio_tstamp_config *audio_tstamp_config, | |
745 | struct snd_pcm_audio_tstamp_report *audio_tstamp_report) | |
05e84878 DR |
746 | { |
747 | struct azx_dev *azx_dev = get_azx_dev(substream); | |
748 | u64 nsec; | |
749 | ||
9e94df3a PLB |
750 | if ((substream->runtime->hw.info & SNDRV_PCM_INFO_HAS_LINK_ATIME) && |
751 | (audio_tstamp_config->type_requested == SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK)) { | |
05e84878 | 752 | |
9e94df3a PLB |
753 | snd_pcm_gettime(substream->runtime, system_ts); |
754 | ||
755 | nsec = timecounter_read(&azx_dev->azx_tc); | |
756 | nsec = div_u64(nsec, 3); /* can be optimized */ | |
757 | if (audio_tstamp_config->report_delay) | |
758 | nsec = azx_adjust_codec_delay(substream, nsec); | |
759 | ||
760 | *audio_ts = ns_to_timespec(nsec); | |
761 | ||
762 | audio_tstamp_report->actual_type = SNDRV_PCM_AUDIO_TSTAMP_TYPE_LINK; | |
763 | audio_tstamp_report->accuracy_report = 1; /* rest of structure is valid */ | |
764 | audio_tstamp_report->accuracy = 42; /* 24 MHz WallClock == 42ns resolution */ | |
765 | ||
766 | } else | |
767 | audio_tstamp_report->actual_type = SNDRV_PCM_AUDIO_TSTAMP_TYPE_DEFAULT; | |
05e84878 DR |
768 | |
769 | return 0; | |
770 | } | |
771 | ||
772 | static struct snd_pcm_hardware azx_pcm_hw = { | |
773 | .info = (SNDRV_PCM_INFO_MMAP | | |
774 | SNDRV_PCM_INFO_INTERLEAVED | | |
775 | SNDRV_PCM_INFO_BLOCK_TRANSFER | | |
776 | SNDRV_PCM_INFO_MMAP_VALID | | |
777 | /* No full-resume yet implemented */ | |
778 | /* SNDRV_PCM_INFO_RESUME |*/ | |
779 | SNDRV_PCM_INFO_PAUSE | | |
780 | SNDRV_PCM_INFO_SYNC_START | | |
9e94df3a PLB |
781 | SNDRV_PCM_INFO_HAS_WALL_CLOCK | /* legacy */ |
782 | SNDRV_PCM_INFO_HAS_LINK_ATIME | | |
05e84878 DR |
783 | SNDRV_PCM_INFO_NO_PERIOD_WAKEUP), |
784 | .formats = SNDRV_PCM_FMTBIT_S16_LE, | |
785 | .rates = SNDRV_PCM_RATE_48000, | |
786 | .rate_min = 48000, | |
787 | .rate_max = 48000, | |
788 | .channels_min = 2, | |
789 | .channels_max = 2, | |
790 | .buffer_bytes_max = AZX_MAX_BUF_SIZE, | |
791 | .period_bytes_min = 128, | |
792 | .period_bytes_max = AZX_MAX_BUF_SIZE / 2, | |
793 | .periods_min = 2, | |
794 | .periods_max = AZX_MAX_FRAG, | |
795 | .fifo_size = 0, | |
796 | }; | |
797 | ||
798 | static int azx_pcm_open(struct snd_pcm_substream *substream) | |
799 | { | |
800 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
820cc6cf | 801 | struct hda_pcm_stream *hinfo = to_hda_pcm_stream(substream); |
05e84878 DR |
802 | struct azx *chip = apcm->chip; |
803 | struct azx_dev *azx_dev; | |
804 | struct snd_pcm_runtime *runtime = substream->runtime; | |
805 | unsigned long flags; | |
806 | int err; | |
807 | int buff_step; | |
808 | ||
9a6246ff | 809 | snd_hda_codec_pcm_get(apcm->info); |
05e84878 DR |
810 | mutex_lock(&chip->open_mutex); |
811 | azx_dev = azx_assign_device(chip, substream); | |
812 | if (azx_dev == NULL) { | |
61ca4107 TI |
813 | err = -EBUSY; |
814 | goto unlock; | |
05e84878 DR |
815 | } |
816 | runtime->hw = azx_pcm_hw; | |
817 | runtime->hw.channels_min = hinfo->channels_min; | |
818 | runtime->hw.channels_max = hinfo->channels_max; | |
819 | runtime->hw.formats = hinfo->formats; | |
820 | runtime->hw.rates = hinfo->rates; | |
821 | snd_pcm_limit_hw_rates(runtime); | |
822 | snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); | |
823 | ||
824 | /* avoid wrap-around with wall-clock */ | |
825 | snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_TIME, | |
826 | 20, | |
827 | 178000000); | |
828 | ||
829 | if (chip->align_buffer_size) | |
830 | /* constrain buffer sizes to be multiple of 128 | |
831 | bytes. This is more efficient in terms of memory | |
832 | access but isn't required by the HDA spec and | |
833 | prevents users from specifying exact period/buffer | |
834 | sizes. For example for 44.1kHz, a period size set | |
835 | to 20ms will be rounded to 19.59ms. */ | |
836 | buff_step = 128; | |
837 | else | |
838 | /* Don't enforce steps on buffer sizes, still need to | |
839 | be multiple of 4 bytes (HDA spec). Tested on Intel | |
840 | HDA controllers, may not work on all devices where | |
841 | option needs to be disabled */ | |
842 | buff_step = 4; | |
843 | ||
844 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, | |
845 | buff_step); | |
846 | snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, | |
847 | buff_step); | |
cc72da7d | 848 | snd_hda_power_up(apcm->codec); |
61ca4107 TI |
849 | if (hinfo->ops.open) |
850 | err = hinfo->ops.open(hinfo, apcm->codec, substream); | |
851 | else | |
852 | err = -ENODEV; | |
05e84878 DR |
853 | if (err < 0) { |
854 | azx_release_device(azx_dev); | |
61ca4107 | 855 | goto powerdown; |
05e84878 DR |
856 | } |
857 | snd_pcm_limit_hw_rates(runtime); | |
858 | /* sanity check */ | |
859 | if (snd_BUG_ON(!runtime->hw.channels_min) || | |
860 | snd_BUG_ON(!runtime->hw.channels_max) || | |
861 | snd_BUG_ON(!runtime->hw.formats) || | |
862 | snd_BUG_ON(!runtime->hw.rates)) { | |
863 | azx_release_device(azx_dev); | |
61ca4107 TI |
864 | if (hinfo->ops.close) |
865 | hinfo->ops.close(hinfo, apcm->codec, substream); | |
866 | err = -EINVAL; | |
867 | goto powerdown; | |
05e84878 DR |
868 | } |
869 | ||
9e94df3a | 870 | /* disable LINK_ATIME timestamps for capture streams |
05e84878 | 871 | until we figure out how to handle digital inputs */ |
9e94df3a PLB |
872 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { |
873 | runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_WALL_CLOCK; /* legacy */ | |
874 | runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_LINK_ATIME; | |
875 | } | |
05e84878 DR |
876 | |
877 | spin_lock_irqsave(&chip->reg_lock, flags); | |
878 | azx_dev->substream = substream; | |
879 | azx_dev->running = 0; | |
880 | spin_unlock_irqrestore(&chip->reg_lock, flags); | |
881 | ||
882 | runtime->private_data = azx_dev; | |
883 | snd_pcm_set_sync(substream); | |
884 | mutex_unlock(&chip->open_mutex); | |
885 | return 0; | |
61ca4107 TI |
886 | |
887 | powerdown: | |
888 | snd_hda_power_down(apcm->codec); | |
889 | unlock: | |
890 | mutex_unlock(&chip->open_mutex); | |
9a6246ff | 891 | snd_hda_codec_pcm_put(apcm->info); |
61ca4107 | 892 | return err; |
05e84878 DR |
893 | } |
894 | ||
895 | static int azx_pcm_mmap(struct snd_pcm_substream *substream, | |
896 | struct vm_area_struct *area) | |
897 | { | |
898 | struct azx_pcm *apcm = snd_pcm_substream_chip(substream); | |
899 | struct azx *chip = apcm->chip; | |
900 | if (chip->ops->pcm_mmap_prepare) | |
901 | chip->ops->pcm_mmap_prepare(substream, area); | |
902 | return snd_pcm_lib_default_mmap(substream, area); | |
903 | } | |
904 | ||
905 | static struct snd_pcm_ops azx_pcm_ops = { | |
906 | .open = azx_pcm_open, | |
907 | .close = azx_pcm_close, | |
908 | .ioctl = snd_pcm_lib_ioctl, | |
909 | .hw_params = azx_pcm_hw_params, | |
910 | .hw_free = azx_pcm_hw_free, | |
911 | .prepare = azx_pcm_prepare, | |
912 | .trigger = azx_pcm_trigger, | |
913 | .pointer = azx_pcm_pointer, | |
9e94df3a | 914 | .get_time_info = azx_get_time_info, |
05e84878 DR |
915 | .mmap = azx_pcm_mmap, |
916 | .page = snd_pcm_sgbuf_ops_page, | |
917 | }; | |
918 | ||
919 | static void azx_pcm_free(struct snd_pcm *pcm) | |
920 | { | |
921 | struct azx_pcm *apcm = pcm->private_data; | |
922 | if (apcm) { | |
923 | list_del(&apcm->list); | |
820cc6cf | 924 | apcm->info->pcm = NULL; |
05e84878 DR |
925 | kfree(apcm); |
926 | } | |
927 | } | |
928 | ||
929 | #define MAX_PREALLOC_SIZE (32 * 1024 * 1024) | |
930 | ||
7c3e438a DR |
931 | static int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec, |
932 | struct hda_pcm *cpcm) | |
05e84878 DR |
933 | { |
934 | struct azx *chip = bus->private_data; | |
935 | struct snd_pcm *pcm; | |
936 | struct azx_pcm *apcm; | |
937 | int pcm_dev = cpcm->device; | |
938 | unsigned int size; | |
939 | int s, err; | |
940 | ||
941 | list_for_each_entry(apcm, &chip->pcm_list, list) { | |
942 | if (apcm->pcm->device == pcm_dev) { | |
943 | dev_err(chip->card->dev, "PCM %d already exists\n", | |
944 | pcm_dev); | |
945 | return -EBUSY; | |
946 | } | |
947 | } | |
948 | err = snd_pcm_new(chip->card, cpcm->name, pcm_dev, | |
949 | cpcm->stream[SNDRV_PCM_STREAM_PLAYBACK].substreams, | |
950 | cpcm->stream[SNDRV_PCM_STREAM_CAPTURE].substreams, | |
951 | &pcm); | |
952 | if (err < 0) | |
953 | return err; | |
954 | strlcpy(pcm->name, cpcm->name, sizeof(pcm->name)); | |
955 | apcm = kzalloc(sizeof(*apcm), GFP_KERNEL); | |
956 | if (apcm == NULL) | |
957 | return -ENOMEM; | |
958 | apcm->chip = chip; | |
959 | apcm->pcm = pcm; | |
960 | apcm->codec = codec; | |
820cc6cf | 961 | apcm->info = cpcm; |
05e84878 DR |
962 | pcm->private_data = apcm; |
963 | pcm->private_free = azx_pcm_free; | |
964 | if (cpcm->pcm_type == HDA_PCM_TYPE_MODEM) | |
965 | pcm->dev_class = SNDRV_PCM_CLASS_MODEM; | |
966 | list_add_tail(&apcm->list, &chip->pcm_list); | |
967 | cpcm->pcm = pcm; | |
968 | for (s = 0; s < 2; s++) { | |
05e84878 DR |
969 | if (cpcm->stream[s].substreams) |
970 | snd_pcm_set_ops(pcm, s, &azx_pcm_ops); | |
971 | } | |
972 | /* buffer pre-allocation */ | |
973 | size = CONFIG_SND_HDA_PREALLOC_SIZE * 1024; | |
974 | if (size > MAX_PREALLOC_SIZE) | |
975 | size = MAX_PREALLOC_SIZE; | |
976 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, | |
977 | chip->card->dev, | |
978 | size, MAX_PREALLOC_SIZE); | |
05e84878 DR |
979 | return 0; |
980 | } | |
05e84878 | 981 | |
6e85dddc DR |
982 | /* |
983 | * CORB / RIRB interface | |
984 | */ | |
f19c3ec2 | 985 | static int azx_alloc_cmd_io(struct azx *chip) |
6e85dddc | 986 | { |
6e85dddc | 987 | /* single page (at least 4096 bytes) must suffice for both ringbuffes */ |
f4de8fe6 TI |
988 | return chip->ops->dma_alloc_pages(chip, SNDRV_DMA_TYPE_DEV, |
989 | PAGE_SIZE, &chip->rb); | |
6e85dddc | 990 | } |
6e85dddc | 991 | |
f43923ff | 992 | static void azx_init_cmd_io(struct azx *chip) |
6e85dddc DR |
993 | { |
994 | int timeout; | |
995 | ||
996 | spin_lock_irq(&chip->reg_lock); | |
997 | /* CORB set up */ | |
998 | chip->corb.addr = chip->rb.addr; | |
999 | chip->corb.buf = (u32 *)chip->rb.area; | |
1000 | azx_writel(chip, CORBLBASE, (u32)chip->corb.addr); | |
1001 | azx_writel(chip, CORBUBASE, upper_32_bits(chip->corb.addr)); | |
1002 | ||
1003 | /* set the corb size to 256 entries (ULI requires explicitly) */ | |
1004 | azx_writeb(chip, CORBSIZE, 0x02); | |
1005 | /* set the corb write pointer to 0 */ | |
1006 | azx_writew(chip, CORBWP, 0); | |
1007 | ||
1008 | /* reset the corb hw read pointer */ | |
fb1d8ac2 | 1009 | azx_writew(chip, CORBRP, AZX_CORBRP_RST); |
6ba736dd TI |
1010 | if (!(chip->driver_caps & AZX_DCAPS_CORBRP_SELF_CLEAR)) { |
1011 | for (timeout = 1000; timeout > 0; timeout--) { | |
fb1d8ac2 | 1012 | if ((azx_readw(chip, CORBRP) & AZX_CORBRP_RST) == AZX_CORBRP_RST) |
6ba736dd TI |
1013 | break; |
1014 | udelay(1); | |
1015 | } | |
1016 | if (timeout <= 0) | |
1017 | dev_err(chip->card->dev, "CORB reset timeout#1, CORBRP = %d\n", | |
1018 | azx_readw(chip, CORBRP)); | |
1019 | ||
1020 | azx_writew(chip, CORBRP, 0); | |
1021 | for (timeout = 1000; timeout > 0; timeout--) { | |
1022 | if (azx_readw(chip, CORBRP) == 0) | |
1023 | break; | |
1024 | udelay(1); | |
1025 | } | |
1026 | if (timeout <= 0) | |
1027 | dev_err(chip->card->dev, "CORB reset timeout#2, CORBRP = %d\n", | |
1028 | azx_readw(chip, CORBRP)); | |
6e85dddc | 1029 | } |
6e85dddc DR |
1030 | |
1031 | /* enable corb dma */ | |
fb1d8ac2 | 1032 | azx_writeb(chip, CORBCTL, AZX_CORBCTL_RUN); |
6e85dddc DR |
1033 | |
1034 | /* RIRB set up */ | |
1035 | chip->rirb.addr = chip->rb.addr + 2048; | |
1036 | chip->rirb.buf = (u32 *)(chip->rb.area + 2048); | |
1037 | chip->rirb.wp = chip->rirb.rp = 0; | |
1038 | memset(chip->rirb.cmds, 0, sizeof(chip->rirb.cmds)); | |
1039 | azx_writel(chip, RIRBLBASE, (u32)chip->rirb.addr); | |
1040 | azx_writel(chip, RIRBUBASE, upper_32_bits(chip->rirb.addr)); | |
1041 | ||
1042 | /* set the rirb size to 256 entries (ULI requires explicitly) */ | |
1043 | azx_writeb(chip, RIRBSIZE, 0x02); | |
1044 | /* reset the rirb hw write pointer */ | |
fb1d8ac2 | 1045 | azx_writew(chip, RIRBWP, AZX_RIRBWP_RST); |
6e85dddc DR |
1046 | /* set N=1, get RIRB response interrupt for new entry */ |
1047 | if (chip->driver_caps & AZX_DCAPS_CTX_WORKAROUND) | |
1048 | azx_writew(chip, RINTCNT, 0xc0); | |
1049 | else | |
1050 | azx_writew(chip, RINTCNT, 1); | |
1051 | /* enable rirb dma and response irq */ | |
fb1d8ac2 | 1052 | azx_writeb(chip, RIRBCTL, AZX_RBCTL_DMA_EN | AZX_RBCTL_IRQ_EN); |
6e85dddc DR |
1053 | spin_unlock_irq(&chip->reg_lock); |
1054 | } | |
6e85dddc | 1055 | |
f43923ff | 1056 | static void azx_free_cmd_io(struct azx *chip) |
6e85dddc DR |
1057 | { |
1058 | spin_lock_irq(&chip->reg_lock); | |
1059 | /* disable ringbuffer DMAs */ | |
1060 | azx_writeb(chip, RIRBCTL, 0); | |
1061 | azx_writeb(chip, CORBCTL, 0); | |
1062 | spin_unlock_irq(&chip->reg_lock); | |
1063 | } | |
6e85dddc DR |
1064 | |
1065 | static unsigned int azx_command_addr(u32 cmd) | |
1066 | { | |
1067 | unsigned int addr = cmd >> 28; | |
1068 | ||
1069 | if (addr >= AZX_MAX_CODECS) { | |
1070 | snd_BUG(); | |
1071 | addr = 0; | |
1072 | } | |
1073 | ||
1074 | return addr; | |
1075 | } | |
1076 | ||
1077 | /* send a command */ | |
1078 | static int azx_corb_send_cmd(struct hda_bus *bus, u32 val) | |
1079 | { | |
1080 | struct azx *chip = bus->private_data; | |
1081 | unsigned int addr = azx_command_addr(val); | |
1082 | unsigned int wp, rp; | |
1083 | ||
1084 | spin_lock_irq(&chip->reg_lock); | |
1085 | ||
1086 | /* add command to corb */ | |
1087 | wp = azx_readw(chip, CORBWP); | |
1088 | if (wp == 0xffff) { | |
1089 | /* something wrong, controller likely turned to D3 */ | |
1090 | spin_unlock_irq(&chip->reg_lock); | |
1091 | return -EIO; | |
1092 | } | |
1093 | wp++; | |
fb1d8ac2 | 1094 | wp %= AZX_MAX_CORB_ENTRIES; |
6e85dddc DR |
1095 | |
1096 | rp = azx_readw(chip, CORBRP); | |
1097 | if (wp == rp) { | |
1098 | /* oops, it's full */ | |
1099 | spin_unlock_irq(&chip->reg_lock); | |
1100 | return -EAGAIN; | |
1101 | } | |
1102 | ||
1103 | chip->rirb.cmds[addr]++; | |
1104 | chip->corb.buf[wp] = cpu_to_le32(val); | |
1105 | azx_writew(chip, CORBWP, wp); | |
1106 | ||
1107 | spin_unlock_irq(&chip->reg_lock); | |
1108 | ||
1109 | return 0; | |
1110 | } | |
1111 | ||
fb1d8ac2 | 1112 | #define AZX_RIRB_EX_UNSOL_EV (1<<4) |
6e85dddc DR |
1113 | |
1114 | /* retrieve RIRB entry - called from interrupt handler */ | |
f0b1df88 | 1115 | static void azx_update_rirb(struct azx *chip) |
6e85dddc DR |
1116 | { |
1117 | unsigned int rp, wp; | |
1118 | unsigned int addr; | |
1119 | u32 res, res_ex; | |
1120 | ||
1121 | wp = azx_readw(chip, RIRBWP); | |
1122 | if (wp == 0xffff) { | |
1123 | /* something wrong, controller likely turned to D3 */ | |
1124 | return; | |
1125 | } | |
1126 | ||
1127 | if (wp == chip->rirb.wp) | |
1128 | return; | |
1129 | chip->rirb.wp = wp; | |
1130 | ||
1131 | while (chip->rirb.rp != wp) { | |
1132 | chip->rirb.rp++; | |
fb1d8ac2 | 1133 | chip->rirb.rp %= AZX_MAX_RIRB_ENTRIES; |
6e85dddc DR |
1134 | |
1135 | rp = chip->rirb.rp << 1; /* an RIRB entry is 8-bytes */ | |
1136 | res_ex = le32_to_cpu(chip->rirb.buf[rp + 1]); | |
1137 | res = le32_to_cpu(chip->rirb.buf[rp]); | |
1138 | addr = res_ex & 0xf; | |
1139 | if ((addr >= AZX_MAX_CODECS) || !(chip->codec_mask & (1 << addr))) { | |
1140 | dev_err(chip->card->dev, "spurious response %#x:%#x, rp = %d, wp = %d", | |
1141 | res, res_ex, | |
1142 | chip->rirb.rp, wp); | |
1143 | snd_BUG(); | |
fb1d8ac2 | 1144 | } else if (res_ex & AZX_RIRB_EX_UNSOL_EV) |
6e85dddc DR |
1145 | snd_hda_queue_unsol_event(chip->bus, res, res_ex); |
1146 | else if (chip->rirb.cmds[addr]) { | |
1147 | chip->rirb.res[addr] = res; | |
1148 | smp_wmb(); | |
1149 | chip->rirb.cmds[addr]--; | |
1150 | } else if (printk_ratelimit()) { | |
1151 | dev_err(chip->card->dev, "spurious response %#x:%#x, last cmd=%#08x\n", | |
1152 | res, res_ex, | |
1153 | chip->last_cmd[addr]); | |
1154 | } | |
1155 | } | |
1156 | } | |
6e85dddc DR |
1157 | |
1158 | /* receive a response */ | |
1159 | static unsigned int azx_rirb_get_response(struct hda_bus *bus, | |
1160 | unsigned int addr) | |
1161 | { | |
1162 | struct azx *chip = bus->private_data; | |
1163 | unsigned long timeout; | |
1164 | unsigned long loopcounter; | |
1165 | int do_poll = 0; | |
1166 | ||
1167 | again: | |
1168 | timeout = jiffies + msecs_to_jiffies(1000); | |
1169 | ||
1170 | for (loopcounter = 0;; loopcounter++) { | |
1171 | if (chip->polling_mode || do_poll) { | |
1172 | spin_lock_irq(&chip->reg_lock); | |
1173 | azx_update_rirb(chip); | |
1174 | spin_unlock_irq(&chip->reg_lock); | |
1175 | } | |
1176 | if (!chip->rirb.cmds[addr]) { | |
1177 | smp_rmb(); | |
1178 | bus->rirb_error = 0; | |
1179 | ||
1180 | if (!do_poll) | |
1181 | chip->poll_count = 0; | |
1182 | return chip->rirb.res[addr]; /* the last value */ | |
1183 | } | |
1184 | if (time_after(jiffies, timeout)) | |
1185 | break; | |
1186 | if (bus->needs_damn_long_delay || loopcounter > 3000) | |
1187 | msleep(2); /* temporary workaround */ | |
1188 | else { | |
1189 | udelay(10); | |
1190 | cond_resched(); | |
1191 | } | |
1192 | } | |
1193 | ||
a1f3f1ca | 1194 | if (bus->no_response_fallback) |
6e85dddc DR |
1195 | return -1; |
1196 | ||
1197 | if (!chip->polling_mode && chip->poll_count < 2) { | |
1198 | dev_dbg(chip->card->dev, | |
1199 | "azx_get_response timeout, polling the codec once: last cmd=0x%08x\n", | |
1200 | chip->last_cmd[addr]); | |
1201 | do_poll = 1; | |
1202 | chip->poll_count++; | |
1203 | goto again; | |
1204 | } | |
1205 | ||
1206 | ||
1207 | if (!chip->polling_mode) { | |
1208 | dev_warn(chip->card->dev, | |
1209 | "azx_get_response timeout, switching to polling mode: last cmd=0x%08x\n", | |
1210 | chip->last_cmd[addr]); | |
1211 | chip->polling_mode = 1; | |
1212 | goto again; | |
1213 | } | |
1214 | ||
1215 | if (chip->msi) { | |
1216 | dev_warn(chip->card->dev, | |
1217 | "No response from codec, disabling MSI: last cmd=0x%08x\n", | |
1218 | chip->last_cmd[addr]); | |
1219 | if (chip->ops->disable_msi_reset_irq(chip) && | |
1220 | chip->ops->disable_msi_reset_irq(chip) < 0) { | |
1221 | bus->rirb_error = 1; | |
1222 | return -1; | |
1223 | } | |
1224 | goto again; | |
1225 | } | |
1226 | ||
1227 | if (chip->probing) { | |
1228 | /* If this critical timeout happens during the codec probing | |
1229 | * phase, this is likely an access to a non-existing codec | |
1230 | * slot. Better to return an error and reset the system. | |
1231 | */ | |
1232 | return -1; | |
1233 | } | |
1234 | ||
1235 | /* a fatal communication error; need either to reset or to fallback | |
1236 | * to the single_cmd mode | |
1237 | */ | |
1238 | bus->rirb_error = 1; | |
1239 | if (bus->allow_bus_reset && !bus->response_reset && !bus->in_reset) { | |
1240 | bus->response_reset = 1; | |
1241 | return -1; /* give a chance to retry */ | |
1242 | } | |
1243 | ||
1244 | dev_err(chip->card->dev, | |
1245 | "azx_get_response timeout, switching to single_cmd mode: last cmd=0x%08x\n", | |
1246 | chip->last_cmd[addr]); | |
1247 | chip->single_cmd = 1; | |
1248 | bus->response_reset = 0; | |
1249 | /* release CORB/RIRB */ | |
1250 | azx_free_cmd_io(chip); | |
1251 | /* disable unsolicited responses */ | |
fb1d8ac2 | 1252 | azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~AZX_GCTL_UNSOL); |
6e85dddc DR |
1253 | return -1; |
1254 | } | |
1255 | ||
1256 | /* | |
1257 | * Use the single immediate command instead of CORB/RIRB for simplicity | |
1258 | * | |
1259 | * Note: according to Intel, this is not preferred use. The command was | |
1260 | * intended for the BIOS only, and may get confused with unsolicited | |
1261 | * responses. So, we shouldn't use it for normal operation from the | |
1262 | * driver. | |
1263 | * I left the codes, however, for debugging/testing purposes. | |
1264 | */ | |
1265 | ||
1266 | /* receive a response */ | |
1267 | static int azx_single_wait_for_response(struct azx *chip, unsigned int addr) | |
1268 | { | |
1269 | int timeout = 50; | |
1270 | ||
1271 | while (timeout--) { | |
1272 | /* check IRV busy bit */ | |
fb1d8ac2 | 1273 | if (azx_readw(chip, IRS) & AZX_IRS_VALID) { |
6e85dddc DR |
1274 | /* reuse rirb.res as the response return value */ |
1275 | chip->rirb.res[addr] = azx_readl(chip, IR); | |
1276 | return 0; | |
1277 | } | |
1278 | udelay(1); | |
1279 | } | |
1280 | if (printk_ratelimit()) | |
1281 | dev_dbg(chip->card->dev, "get_response timeout: IRS=0x%x\n", | |
1282 | azx_readw(chip, IRS)); | |
1283 | chip->rirb.res[addr] = -1; | |
1284 | return -EIO; | |
1285 | } | |
1286 | ||
1287 | /* send a command */ | |
1288 | static int azx_single_send_cmd(struct hda_bus *bus, u32 val) | |
1289 | { | |
1290 | struct azx *chip = bus->private_data; | |
1291 | unsigned int addr = azx_command_addr(val); | |
1292 | int timeout = 50; | |
1293 | ||
1294 | bus->rirb_error = 0; | |
1295 | while (timeout--) { | |
1296 | /* check ICB busy bit */ | |
fb1d8ac2 | 1297 | if (!((azx_readw(chip, IRS) & AZX_IRS_BUSY))) { |
6e85dddc DR |
1298 | /* Clear IRV valid bit */ |
1299 | azx_writew(chip, IRS, azx_readw(chip, IRS) | | |
fb1d8ac2 | 1300 | AZX_IRS_VALID); |
6e85dddc DR |
1301 | azx_writel(chip, IC, val); |
1302 | azx_writew(chip, IRS, azx_readw(chip, IRS) | | |
fb1d8ac2 | 1303 | AZX_IRS_BUSY); |
6e85dddc DR |
1304 | return azx_single_wait_for_response(chip, addr); |
1305 | } | |
1306 | udelay(1); | |
1307 | } | |
1308 | if (printk_ratelimit()) | |
1309 | dev_dbg(chip->card->dev, | |
1310 | "send_cmd timeout: IRS=0x%x, val=0x%x\n", | |
1311 | azx_readw(chip, IRS), val); | |
1312 | return -EIO; | |
1313 | } | |
1314 | ||
1315 | /* receive a response */ | |
1316 | static unsigned int azx_single_get_response(struct hda_bus *bus, | |
1317 | unsigned int addr) | |
1318 | { | |
1319 | struct azx *chip = bus->private_data; | |
1320 | return chip->rirb.res[addr]; | |
1321 | } | |
1322 | ||
1323 | /* | |
1324 | * The below are the main callbacks from hda_codec. | |
1325 | * | |
1326 | * They are just the skeleton to call sub-callbacks according to the | |
1327 | * current setting of chip->single_cmd. | |
1328 | */ | |
1329 | ||
1330 | /* send a command */ | |
154867cf | 1331 | static int azx_send_cmd(struct hda_bus *bus, unsigned int val) |
6e85dddc DR |
1332 | { |
1333 | struct azx *chip = bus->private_data; | |
1334 | ||
1335 | if (chip->disabled) | |
1336 | return 0; | |
1337 | chip->last_cmd[azx_command_addr(val)] = val; | |
1338 | if (chip->single_cmd) | |
1339 | return azx_single_send_cmd(bus, val); | |
1340 | else | |
1341 | return azx_corb_send_cmd(bus, val); | |
1342 | } | |
6e85dddc DR |
1343 | |
1344 | /* get a response */ | |
154867cf | 1345 | static unsigned int azx_get_response(struct hda_bus *bus, |
6e85dddc DR |
1346 | unsigned int addr) |
1347 | { | |
1348 | struct azx *chip = bus->private_data; | |
1349 | if (chip->disabled) | |
1350 | return 0; | |
1351 | if (chip->single_cmd) | |
1352 | return azx_single_get_response(bus, addr); | |
1353 | else | |
1354 | return azx_rirb_get_response(bus, addr); | |
1355 | } | |
6e85dddc | 1356 | |
2b5fd6c2 DR |
1357 | #ifdef CONFIG_SND_HDA_DSP_LOADER |
1358 | /* | |
1359 | * DSP loading code (e.g. for CA0132) | |
1360 | */ | |
1361 | ||
1362 | /* use the first stream for loading DSP */ | |
1363 | static struct azx_dev * | |
1364 | azx_get_dsp_loader_dev(struct azx *chip) | |
1365 | { | |
1366 | return &chip->azx_dev[chip->playback_index_offset]; | |
1367 | } | |
1368 | ||
154867cf DR |
1369 | static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format, |
1370 | unsigned int byte_size, | |
1371 | struct snd_dma_buffer *bufp) | |
2b5fd6c2 DR |
1372 | { |
1373 | u32 *bdl; | |
1374 | struct azx *chip = bus->private_data; | |
1375 | struct azx_dev *azx_dev; | |
1376 | int err; | |
1377 | ||
1378 | azx_dev = azx_get_dsp_loader_dev(chip); | |
1379 | ||
1380 | dsp_lock(azx_dev); | |
1381 | spin_lock_irq(&chip->reg_lock); | |
1382 | if (azx_dev->running || azx_dev->locked) { | |
1383 | spin_unlock_irq(&chip->reg_lock); | |
1384 | err = -EBUSY; | |
1385 | goto unlock; | |
1386 | } | |
1387 | azx_dev->prepared = 0; | |
1388 | chip->saved_azx_dev = *azx_dev; | |
1389 | azx_dev->locked = 1; | |
1390 | spin_unlock_irq(&chip->reg_lock); | |
1391 | ||
1392 | err = chip->ops->dma_alloc_pages(chip, SNDRV_DMA_TYPE_DEV_SG, | |
1393 | byte_size, bufp); | |
1394 | if (err < 0) | |
1395 | goto err_alloc; | |
1396 | ||
1397 | azx_dev->bufsize = byte_size; | |
1398 | azx_dev->period_bytes = byte_size; | |
1399 | azx_dev->format_val = format; | |
1400 | ||
1401 | azx_stream_reset(chip, azx_dev); | |
1402 | ||
1403 | /* reset BDL address */ | |
1404 | azx_sd_writel(chip, azx_dev, SD_BDLPL, 0); | |
1405 | azx_sd_writel(chip, azx_dev, SD_BDLPU, 0); | |
1406 | ||
1407 | azx_dev->frags = 0; | |
1408 | bdl = (u32 *)azx_dev->bdl.area; | |
1409 | err = setup_bdle(chip, bufp, azx_dev, &bdl, 0, byte_size, 0); | |
1410 | if (err < 0) | |
1411 | goto error; | |
1412 | ||
1413 | azx_setup_controller(chip, azx_dev); | |
1414 | dsp_unlock(azx_dev); | |
1415 | return azx_dev->stream_tag; | |
1416 | ||
1417 | error: | |
1418 | chip->ops->dma_free_pages(chip, bufp); | |
1419 | err_alloc: | |
1420 | spin_lock_irq(&chip->reg_lock); | |
1421 | if (azx_dev->opened) | |
1422 | *azx_dev = chip->saved_azx_dev; | |
1423 | azx_dev->locked = 0; | |
1424 | spin_unlock_irq(&chip->reg_lock); | |
1425 | unlock: | |
1426 | dsp_unlock(azx_dev); | |
1427 | return err; | |
1428 | } | |
2b5fd6c2 | 1429 | |
154867cf | 1430 | static void azx_load_dsp_trigger(struct hda_bus *bus, bool start) |
2b5fd6c2 DR |
1431 | { |
1432 | struct azx *chip = bus->private_data; | |
1433 | struct azx_dev *azx_dev = azx_get_dsp_loader_dev(chip); | |
1434 | ||
1435 | if (start) | |
1436 | azx_stream_start(chip, azx_dev); | |
1437 | else | |
1438 | azx_stream_stop(chip, azx_dev); | |
1439 | azx_dev->running = start; | |
1440 | } | |
2b5fd6c2 | 1441 | |
154867cf DR |
1442 | static void azx_load_dsp_cleanup(struct hda_bus *bus, |
1443 | struct snd_dma_buffer *dmab) | |
2b5fd6c2 DR |
1444 | { |
1445 | struct azx *chip = bus->private_data; | |
1446 | struct azx_dev *azx_dev = azx_get_dsp_loader_dev(chip); | |
1447 | ||
1448 | if (!dmab->area || !azx_dev->locked) | |
1449 | return; | |
1450 | ||
1451 | dsp_lock(azx_dev); | |
1452 | /* reset BDL address */ | |
1453 | azx_sd_writel(chip, azx_dev, SD_BDLPL, 0); | |
1454 | azx_sd_writel(chip, azx_dev, SD_BDLPU, 0); | |
1455 | azx_sd_writel(chip, azx_dev, SD_CTL, 0); | |
1456 | azx_dev->bufsize = 0; | |
1457 | azx_dev->period_bytes = 0; | |
1458 | azx_dev->format_val = 0; | |
1459 | ||
1460 | chip->ops->dma_free_pages(chip, dmab); | |
1461 | dmab->area = NULL; | |
1462 | ||
1463 | spin_lock_irq(&chip->reg_lock); | |
1464 | if (azx_dev->opened) | |
1465 | *azx_dev = chip->saved_azx_dev; | |
1466 | azx_dev->locked = 0; | |
1467 | spin_unlock_irq(&chip->reg_lock); | |
1468 | dsp_unlock(azx_dev); | |
1469 | } | |
2b5fd6c2 DR |
1470 | #endif /* CONFIG_SND_HDA_DSP_LOADER */ |
1471 | ||
67908994 DR |
1472 | int azx_alloc_stream_pages(struct azx *chip) |
1473 | { | |
1474 | int i, err; | |
67908994 DR |
1475 | |
1476 | for (i = 0; i < chip->num_streams; i++) { | |
1477 | dsp_lock_init(&chip->azx_dev[i]); | |
1478 | /* allocate memory for the BDL for each stream */ | |
1479 | err = chip->ops->dma_alloc_pages(chip, SNDRV_DMA_TYPE_DEV, | |
1480 | BDL_SIZE, | |
1481 | &chip->azx_dev[i].bdl); | |
f4de8fe6 | 1482 | if (err < 0) |
67908994 | 1483 | return -ENOMEM; |
67908994 DR |
1484 | } |
1485 | /* allocate memory for the position buffer */ | |
1486 | err = chip->ops->dma_alloc_pages(chip, SNDRV_DMA_TYPE_DEV, | |
1487 | chip->num_streams * 8, &chip->posbuf); | |
f4de8fe6 | 1488 | if (err < 0) |
67908994 | 1489 | return -ENOMEM; |
f19c3ec2 DR |
1490 | |
1491 | /* allocate CORB/RIRB */ | |
1492 | err = azx_alloc_cmd_io(chip); | |
1493 | if (err < 0) | |
1494 | return err; | |
67908994 DR |
1495 | return 0; |
1496 | } | |
1497 | EXPORT_SYMBOL_GPL(azx_alloc_stream_pages); | |
1498 | ||
1499 | void azx_free_stream_pages(struct azx *chip) | |
1500 | { | |
1501 | int i; | |
1502 | if (chip->azx_dev) { | |
1503 | for (i = 0; i < chip->num_streams; i++) | |
1504 | if (chip->azx_dev[i].bdl.area) | |
1505 | chip->ops->dma_free_pages( | |
1506 | chip, &chip->azx_dev[i].bdl); | |
1507 | } | |
1508 | if (chip->rb.area) | |
1509 | chip->ops->dma_free_pages(chip, &chip->rb); | |
1510 | if (chip->posbuf.area) | |
1511 | chip->ops->dma_free_pages(chip, &chip->posbuf); | |
1512 | } | |
1513 | EXPORT_SYMBOL_GPL(azx_free_stream_pages); | |
1514 | ||
f43923ff DR |
1515 | /* |
1516 | * Lowlevel interface | |
1517 | */ | |
1518 | ||
1519 | /* enter link reset */ | |
1520 | void azx_enter_link_reset(struct azx *chip) | |
1521 | { | |
1522 | unsigned long timeout; | |
1523 | ||
1524 | /* reset controller */ | |
fb1d8ac2 | 1525 | azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~AZX_GCTL_RESET); |
f43923ff DR |
1526 | |
1527 | timeout = jiffies + msecs_to_jiffies(100); | |
fb1d8ac2 | 1528 | while ((azx_readb(chip, GCTL) & AZX_GCTL_RESET) && |
f43923ff DR |
1529 | time_before(jiffies, timeout)) |
1530 | usleep_range(500, 1000); | |
1531 | } | |
1532 | EXPORT_SYMBOL_GPL(azx_enter_link_reset); | |
1533 | ||
1534 | /* exit link reset */ | |
1535 | static void azx_exit_link_reset(struct azx *chip) | |
1536 | { | |
1537 | unsigned long timeout; | |
1538 | ||
fb1d8ac2 | 1539 | azx_writeb(chip, GCTL, azx_readb(chip, GCTL) | AZX_GCTL_RESET); |
f43923ff DR |
1540 | |
1541 | timeout = jiffies + msecs_to_jiffies(100); | |
1542 | while (!azx_readb(chip, GCTL) && | |
1543 | time_before(jiffies, timeout)) | |
1544 | usleep_range(500, 1000); | |
1545 | } | |
1546 | ||
1547 | /* reset codec link */ | |
17c3ad03 | 1548 | static int azx_reset(struct azx *chip, bool full_reset) |
f43923ff DR |
1549 | { |
1550 | if (!full_reset) | |
1551 | goto __skip; | |
1552 | ||
1553 | /* clear STATESTS */ | |
1554 | azx_writew(chip, STATESTS, STATESTS_INT_MASK); | |
1555 | ||
1556 | /* reset controller */ | |
1557 | azx_enter_link_reset(chip); | |
1558 | ||
1559 | /* delay for >= 100us for codec PLL to settle per spec | |
1560 | * Rev 0.9 section 5.5.1 | |
1561 | */ | |
1562 | usleep_range(500, 1000); | |
1563 | ||
1564 | /* Bring controller out of reset */ | |
1565 | azx_exit_link_reset(chip); | |
1566 | ||
1567 | /* Brent Chartrand said to wait >= 540us for codecs to initialize */ | |
1568 | usleep_range(1000, 1200); | |
1569 | ||
1570 | __skip: | |
1571 | /* check to see if controller is ready */ | |
1572 | if (!azx_readb(chip, GCTL)) { | |
1573 | dev_dbg(chip->card->dev, "azx_reset: controller not ready!\n"); | |
1574 | return -EBUSY; | |
1575 | } | |
1576 | ||
1577 | /* Accept unsolicited responses */ | |
1578 | if (!chip->single_cmd) | |
1579 | azx_writel(chip, GCTL, azx_readl(chip, GCTL) | | |
fb1d8ac2 | 1580 | AZX_GCTL_UNSOL); |
f43923ff DR |
1581 | |
1582 | /* detect codecs */ | |
1583 | if (!chip->codec_mask) { | |
1584 | chip->codec_mask = azx_readw(chip, STATESTS); | |
1585 | dev_dbg(chip->card->dev, "codec_mask = 0x%x\n", | |
1586 | chip->codec_mask); | |
1587 | } | |
1588 | ||
1589 | return 0; | |
1590 | } | |
1591 | ||
1592 | /* enable interrupts */ | |
1593 | static void azx_int_enable(struct azx *chip) | |
1594 | { | |
1595 | /* enable controller CIE and GIE */ | |
1596 | azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) | | |
fb1d8ac2 | 1597 | AZX_INT_CTRL_EN | AZX_INT_GLOBAL_EN); |
f43923ff DR |
1598 | } |
1599 | ||
1600 | /* disable interrupts */ | |
1601 | static void azx_int_disable(struct azx *chip) | |
1602 | { | |
1603 | int i; | |
1604 | ||
1605 | /* disable interrupts in stream descriptor */ | |
1606 | for (i = 0; i < chip->num_streams; i++) { | |
1607 | struct azx_dev *azx_dev = &chip->azx_dev[i]; | |
1608 | azx_sd_writeb(chip, azx_dev, SD_CTL, | |
1609 | azx_sd_readb(chip, azx_dev, SD_CTL) & | |
1610 | ~SD_INT_MASK); | |
1611 | } | |
1612 | ||
1613 | /* disable SIE for all streams */ | |
1614 | azx_writeb(chip, INTCTL, 0); | |
1615 | ||
1616 | /* disable controller CIE and GIE */ | |
1617 | azx_writel(chip, INTCTL, azx_readl(chip, INTCTL) & | |
fb1d8ac2 | 1618 | ~(AZX_INT_CTRL_EN | AZX_INT_GLOBAL_EN)); |
f43923ff DR |
1619 | } |
1620 | ||
1621 | /* clear interrupts */ | |
1622 | static void azx_int_clear(struct azx *chip) | |
1623 | { | |
1624 | int i; | |
1625 | ||
1626 | /* clear stream status */ | |
1627 | for (i = 0; i < chip->num_streams; i++) { | |
1628 | struct azx_dev *azx_dev = &chip->azx_dev[i]; | |
1629 | azx_sd_writeb(chip, azx_dev, SD_STS, SD_INT_MASK); | |
1630 | } | |
1631 | ||
1632 | /* clear STATESTS */ | |
1633 | azx_writew(chip, STATESTS, STATESTS_INT_MASK); | |
1634 | ||
1635 | /* clear rirb status */ | |
1636 | azx_writeb(chip, RIRBSTS, RIRB_INT_MASK); | |
1637 | ||
1638 | /* clear int status */ | |
fb1d8ac2 | 1639 | azx_writel(chip, INTSTS, AZX_INT_CTRL_EN | AZX_INT_ALL_STREAM); |
f43923ff DR |
1640 | } |
1641 | ||
1642 | /* | |
1643 | * reset and start the controller registers | |
1644 | */ | |
17c3ad03 | 1645 | void azx_init_chip(struct azx *chip, bool full_reset) |
f43923ff DR |
1646 | { |
1647 | if (chip->initialized) | |
1648 | return; | |
1649 | ||
1650 | /* reset controller */ | |
1651 | azx_reset(chip, full_reset); | |
1652 | ||
1653 | /* initialize interrupts */ | |
1654 | azx_int_clear(chip); | |
1655 | azx_int_enable(chip); | |
1656 | ||
1657 | /* initialize the codec command I/O */ | |
1658 | if (!chip->single_cmd) | |
1659 | azx_init_cmd_io(chip); | |
1660 | ||
1661 | /* program the position buffer */ | |
1662 | azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr); | |
1663 | azx_writel(chip, DPUBASE, upper_32_bits(chip->posbuf.addr)); | |
1664 | ||
1665 | chip->initialized = 1; | |
1666 | } | |
1667 | EXPORT_SYMBOL_GPL(azx_init_chip); | |
1668 | ||
1669 | void azx_stop_chip(struct azx *chip) | |
1670 | { | |
1671 | if (!chip->initialized) | |
1672 | return; | |
1673 | ||
1674 | /* disable interrupts */ | |
1675 | azx_int_disable(chip); | |
1676 | azx_int_clear(chip); | |
1677 | ||
1678 | /* disable CORB/RIRB */ | |
1679 | azx_free_cmd_io(chip); | |
1680 | ||
1681 | /* disable position buffer */ | |
1682 | azx_writel(chip, DPLBASE, 0); | |
1683 | azx_writel(chip, DPUBASE, 0); | |
1684 | ||
1685 | chip->initialized = 0; | |
1686 | } | |
154867cf | 1687 | EXPORT_SYMBOL_GPL(azx_stop_chip); |
f43923ff | 1688 | |
f0b1df88 DR |
1689 | /* |
1690 | * interrupt handler | |
1691 | */ | |
1692 | irqreturn_t azx_interrupt(int irq, void *dev_id) | |
1693 | { | |
1694 | struct azx *chip = dev_id; | |
1695 | struct azx_dev *azx_dev; | |
1696 | u32 status; | |
1697 | u8 sd_status; | |
1698 | int i; | |
1699 | ||
641d334b | 1700 | #ifdef CONFIG_PM |
364aa716 | 1701 | if (azx_has_pm_runtime(chip)) |
7b0a48f3 | 1702 | if (!pm_runtime_active(chip->card->dev)) |
f0b1df88 DR |
1703 | return IRQ_NONE; |
1704 | #endif | |
1705 | ||
1706 | spin_lock(&chip->reg_lock); | |
1707 | ||
1708 | if (chip->disabled) { | |
1709 | spin_unlock(&chip->reg_lock); | |
1710 | return IRQ_NONE; | |
1711 | } | |
1712 | ||
1713 | status = azx_readl(chip, INTSTS); | |
1714 | if (status == 0 || status == 0xffffffff) { | |
1715 | spin_unlock(&chip->reg_lock); | |
1716 | return IRQ_NONE; | |
1717 | } | |
1718 | ||
1719 | for (i = 0; i < chip->num_streams; i++) { | |
1720 | azx_dev = &chip->azx_dev[i]; | |
1721 | if (status & azx_dev->sd_int_sta_mask) { | |
1722 | sd_status = azx_sd_readb(chip, azx_dev, SD_STS); | |
1723 | azx_sd_writeb(chip, azx_dev, SD_STS, SD_INT_MASK); | |
1724 | if (!azx_dev->substream || !azx_dev->running || | |
1725 | !(sd_status & SD_INT_COMPLETE)) | |
1726 | continue; | |
1727 | /* check whether this IRQ is really acceptable */ | |
1728 | if (!chip->ops->position_check || | |
1729 | chip->ops->position_check(chip, azx_dev)) { | |
1730 | spin_unlock(&chip->reg_lock); | |
1731 | snd_pcm_period_elapsed(azx_dev->substream); | |
1732 | spin_lock(&chip->reg_lock); | |
1733 | } | |
1734 | } | |
1735 | } | |
1736 | ||
1737 | /* clear rirb int */ | |
1738 | status = azx_readb(chip, RIRBSTS); | |
1739 | if (status & RIRB_INT_MASK) { | |
1740 | if (status & RIRB_INT_RESPONSE) { | |
1741 | if (chip->driver_caps & AZX_DCAPS_RIRB_PRE_DELAY) | |
1742 | udelay(80); | |
1743 | azx_update_rirb(chip); | |
1744 | } | |
1745 | azx_writeb(chip, RIRBSTS, RIRB_INT_MASK); | |
1746 | } | |
1747 | ||
1748 | spin_unlock(&chip->reg_lock); | |
1749 | ||
1750 | return IRQ_HANDLED; | |
1751 | } | |
1752 | EXPORT_SYMBOL_GPL(azx_interrupt); | |
1753 | ||
154867cf DR |
1754 | /* |
1755 | * Codec initerface | |
1756 | */ | |
1757 | ||
1758 | /* | |
1759 | * Probe the given codec address | |
1760 | */ | |
1761 | static int probe_codec(struct azx *chip, int addr) | |
1762 | { | |
1763 | unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) | | |
1764 | (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; | |
1765 | unsigned int res; | |
1766 | ||
d068ebc2 | 1767 | mutex_lock(&chip->bus->core.cmd_mutex); |
154867cf DR |
1768 | chip->probing = 1; |
1769 | azx_send_cmd(chip->bus, cmd); | |
1770 | res = azx_get_response(chip->bus, addr); | |
1771 | chip->probing = 0; | |
d068ebc2 | 1772 | mutex_unlock(&chip->bus->core.cmd_mutex); |
154867cf DR |
1773 | if (res == -1) |
1774 | return -EIO; | |
1775 | dev_dbg(chip->card->dev, "codec #%d probed OK\n", addr); | |
1776 | return 0; | |
1777 | } | |
1778 | ||
1779 | static void azx_bus_reset(struct hda_bus *bus) | |
1780 | { | |
1781 | struct azx *chip = bus->private_data; | |
1782 | ||
1783 | bus->in_reset = 1; | |
1784 | azx_stop_chip(chip); | |
17c3ad03 | 1785 | azx_init_chip(chip, true); |
59ed1ead TI |
1786 | if (chip->initialized) |
1787 | snd_hda_bus_reset(chip->bus); | |
154867cf DR |
1788 | bus->in_reset = 0; |
1789 | } | |
1790 | ||
154867cf DR |
1791 | static int get_jackpoll_interval(struct azx *chip) |
1792 | { | |
1793 | int i; | |
1794 | unsigned int j; | |
1795 | ||
1796 | if (!chip->jackpoll_ms) | |
1797 | return 0; | |
1798 | ||
1799 | i = chip->jackpoll_ms[chip->dev_index]; | |
1800 | if (i == 0) | |
1801 | return 0; | |
1802 | if (i < 50 || i > 60000) | |
1803 | j = 0; | |
1804 | else | |
1805 | j = msecs_to_jiffies(i); | |
1806 | if (j == 0) | |
1807 | dev_warn(chip->card->dev, | |
1808 | "jackpoll_ms value out of range: %d\n", i); | |
1809 | return j; | |
1810 | } | |
1811 | ||
ef744978 TI |
1812 | static struct hda_bus_ops bus_ops = { |
1813 | .command = azx_send_cmd, | |
1814 | .get_response = azx_get_response, | |
1815 | .attach_pcm = azx_attach_pcm_stream, | |
1816 | .bus_reset = azx_bus_reset, | |
ef744978 TI |
1817 | #ifdef CONFIG_SND_HDA_DSP_LOADER |
1818 | .load_dsp_prepare = azx_load_dsp_prepare, | |
1819 | .load_dsp_trigger = azx_load_dsp_trigger, | |
1820 | .load_dsp_cleanup = azx_load_dsp_cleanup, | |
1821 | #endif | |
1822 | }; | |
1823 | ||
96d2bd6e | 1824 | /* HD-audio bus initialization */ |
bb573928 | 1825 | int azx_bus_create(struct azx *chip, const char *model) |
154867cf | 1826 | { |
ef744978 | 1827 | struct hda_bus *bus; |
96d2bd6e | 1828 | int err; |
154867cf | 1829 | |
ef744978 | 1830 | err = snd_hda_bus_new(chip->card, &bus); |
154867cf DR |
1831 | if (err < 0) |
1832 | return err; | |
1833 | ||
ef744978 TI |
1834 | chip->bus = bus; |
1835 | bus->private_data = chip; | |
1836 | bus->pci = chip->pci; | |
1837 | bus->modelname = model; | |
1838 | bus->ops = bus_ops; | |
ef744978 | 1839 | |
154867cf DR |
1840 | if (chip->driver_caps & AZX_DCAPS_RIRB_DELAY) { |
1841 | dev_dbg(chip->card->dev, "Enable delay in RIRB handling\n"); | |
ef744978 | 1842 | bus->needs_damn_long_delay = 1; |
154867cf DR |
1843 | } |
1844 | ||
96d2bd6e TI |
1845 | /* AMD chipsets often cause the communication stalls upon certain |
1846 | * sequence like the pin-detection. It seems that forcing the synced | |
1847 | * access works around the stall. Grrr... | |
1848 | */ | |
1849 | if (chip->driver_caps & AZX_DCAPS_SYNC_WRITE) { | |
1850 | dev_dbg(chip->card->dev, "Enable sync_write for stable communication\n"); | |
d068ebc2 | 1851 | bus->core.sync_write = 1; |
96d2bd6e TI |
1852 | bus->allow_bus_reset = 1; |
1853 | } | |
1854 | ||
1855 | return 0; | |
1856 | } | |
1857 | EXPORT_SYMBOL_GPL(azx_bus_create); | |
1858 | ||
1859 | /* Probe codecs */ | |
1860 | int azx_probe_codecs(struct azx *chip, unsigned int max_slots) | |
1861 | { | |
1862 | struct hda_bus *bus = chip->bus; | |
1863 | int c, codecs, err; | |
1864 | ||
154867cf DR |
1865 | codecs = 0; |
1866 | if (!max_slots) | |
1867 | max_slots = AZX_DEFAULT_CODECS; | |
1868 | ||
1869 | /* First try to probe all given codec slots */ | |
1870 | for (c = 0; c < max_slots; c++) { | |
1871 | if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) { | |
1872 | if (probe_codec(chip, c) < 0) { | |
1873 | /* Some BIOSen give you wrong codec addresses | |
1874 | * that don't exist | |
1875 | */ | |
1876 | dev_warn(chip->card->dev, | |
1877 | "Codec #%d probe error; disabling it...\n", c); | |
1878 | chip->codec_mask &= ~(1 << c); | |
1879 | /* More badly, accessing to a non-existing | |
1880 | * codec often screws up the controller chip, | |
1881 | * and disturbs the further communications. | |
1882 | * Thus if an error occurs during probing, | |
1883 | * better to reset the controller chip to | |
1884 | * get back to the sanity state. | |
1885 | */ | |
1886 | azx_stop_chip(chip); | |
17c3ad03 | 1887 | azx_init_chip(chip, true); |
154867cf DR |
1888 | } |
1889 | } | |
1890 | } | |
1891 | ||
154867cf DR |
1892 | /* Then create codec instances */ |
1893 | for (c = 0; c < max_slots; c++) { | |
1894 | if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) { | |
1895 | struct hda_codec *codec; | |
6efdd851 | 1896 | err = snd_hda_codec_new(bus, bus->card, c, &codec); |
154867cf DR |
1897 | if (err < 0) |
1898 | continue; | |
1899 | codec->jackpoll_interval = get_jackpoll_interval(chip); | |
1900 | codec->beep_mode = chip->beep_mode; | |
1901 | codecs++; | |
1902 | } | |
1903 | } | |
1904 | if (!codecs) { | |
1905 | dev_err(chip->card->dev, "no codecs initialized\n"); | |
1906 | return -ENXIO; | |
1907 | } | |
1908 | return 0; | |
1909 | } | |
96d2bd6e | 1910 | EXPORT_SYMBOL_GPL(azx_probe_codecs); |
154867cf DR |
1911 | |
1912 | /* configure each codec instance */ | |
1913 | int azx_codec_configure(struct azx *chip) | |
1914 | { | |
1915 | struct hda_codec *codec; | |
d068ebc2 | 1916 | list_for_each_codec(codec, chip->bus) { |
154867cf DR |
1917 | snd_hda_codec_configure(codec); |
1918 | } | |
1919 | return 0; | |
1920 | } | |
1921 | EXPORT_SYMBOL_GPL(azx_codec_configure); | |
1922 | ||
154867cf | 1923 | |
93e3423e RR |
1924 | static bool is_input_stream(struct azx *chip, unsigned char index) |
1925 | { | |
1926 | return (index >= chip->capture_index_offset && | |
1927 | index < chip->capture_index_offset + chip->capture_streams); | |
1928 | } | |
1929 | ||
154867cf DR |
1930 | /* initialize SD streams */ |
1931 | int azx_init_stream(struct azx *chip) | |
1932 | { | |
1933 | int i; | |
93e3423e RR |
1934 | int in_stream_tag = 0; |
1935 | int out_stream_tag = 0; | |
154867cf DR |
1936 | |
1937 | /* initialize each stream (aka device) | |
1938 | * assign the starting bdl address to each stream (device) | |
1939 | * and initialize | |
1940 | */ | |
1941 | for (i = 0; i < chip->num_streams; i++) { | |
1942 | struct azx_dev *azx_dev = &chip->azx_dev[i]; | |
1943 | azx_dev->posbuf = (u32 __iomem *)(chip->posbuf.area + i * 8); | |
1944 | /* offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */ | |
1945 | azx_dev->sd_addr = chip->remap_addr + (0x20 * i + 0x80); | |
1946 | /* int mask: SDI0=0x01, SDI1=0x02, ... SDO3=0x80 */ | |
1947 | azx_dev->sd_int_sta_mask = 1 << i; | |
154867cf | 1948 | azx_dev->index = i; |
93e3423e RR |
1949 | |
1950 | /* stream tag must be unique throughout | |
1951 | * the stream direction group, | |
1952 | * valid values 1...15 | |
1953 | * use separate stream tag if the flag | |
1954 | * AZX_DCAPS_SEPARATE_STREAM_TAG is used | |
1955 | */ | |
1956 | if (chip->driver_caps & AZX_DCAPS_SEPARATE_STREAM_TAG) | |
1957 | azx_dev->stream_tag = | |
1958 | is_input_stream(chip, i) ? | |
1959 | ++in_stream_tag : | |
1960 | ++out_stream_tag; | |
1961 | else | |
1962 | azx_dev->stream_tag = i + 1; | |
154867cf DR |
1963 | } |
1964 | ||
1965 | return 0; | |
1966 | } | |
1967 | EXPORT_SYMBOL_GPL(azx_init_stream); | |
1968 | ||
05e84878 | 1969 | MODULE_LICENSE("GPL"); |
70462457 | 1970 | MODULE_DESCRIPTION("Common HDA driver functions"); |