xref: /openbmc/qemu/hw/audio/hda-codec.c (revision f6476697)
1 /*
2  * Copyright (C) 2010 Red Hat, Inc.
3  *
4  * written by Gerd Hoffmann <kraxel@redhat.com>
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License as
8  * published by the Free Software Foundation; either version 2 or
9  * (at your option) version 3 of the License.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
18  */
19 
20 #include "qemu/osdep.h"
21 #include "hw/pci/pci.h"
22 #include "hw/qdev-properties.h"
23 #include "intel-hda.h"
24 #include "migration/vmstate.h"
25 #include "qemu/module.h"
26 #include "intel-hda-defs.h"
27 #include "audio/audio.h"
28 #include "trace.h"
29 #include "qom/object.h"
30 
31 /* -------------------------------------------------------------------------- */
32 
33 typedef struct desc_param {
34     uint32_t id;
35     uint32_t val;
36 } desc_param;
37 
38 typedef struct desc_node {
39     uint32_t nid;
40     const char *name;
41     const desc_param *params;
42     uint32_t nparams;
43     uint32_t config;
44     uint32_t pinctl;
45     uint32_t *conn;
46     uint32_t stindex;
47 } desc_node;
48 
49 typedef struct desc_codec {
50     const char *name;
51     uint32_t iid;
52     const desc_node *nodes;
53     uint32_t nnodes;
54 } desc_codec;
55 
56 static const desc_param* hda_codec_find_param(const desc_node *node, uint32_t id)
57 {
58     int i;
59 
60     for (i = 0; i < node->nparams; i++) {
61         if (node->params[i].id == id) {
62             return &node->params[i];
63         }
64     }
65     return NULL;
66 }
67 
68 static const desc_node* hda_codec_find_node(const desc_codec *codec, uint32_t nid)
69 {
70     int i;
71 
72     for (i = 0; i < codec->nnodes; i++) {
73         if (codec->nodes[i].nid == nid) {
74             return &codec->nodes[i];
75         }
76     }
77     return NULL;
78 }
79 
80 static void hda_codec_parse_fmt(uint32_t format, struct audsettings *as)
81 {
82     if (format & AC_FMT_TYPE_NON_PCM) {
83         return;
84     }
85 
86     as->freq = (format & AC_FMT_BASE_44K) ? 44100 : 48000;
87 
88     switch ((format & AC_FMT_MULT_MASK) >> AC_FMT_MULT_SHIFT) {
89     case 1: as->freq *= 2; break;
90     case 2: as->freq *= 3; break;
91     case 3: as->freq *= 4; break;
92     }
93 
94     switch ((format & AC_FMT_DIV_MASK) >> AC_FMT_DIV_SHIFT) {
95     case 1: as->freq /= 2; break;
96     case 2: as->freq /= 3; break;
97     case 3: as->freq /= 4; break;
98     case 4: as->freq /= 5; break;
99     case 5: as->freq /= 6; break;
100     case 6: as->freq /= 7; break;
101     case 7: as->freq /= 8; break;
102     }
103 
104     switch (format & AC_FMT_BITS_MASK) {
105     case AC_FMT_BITS_8:  as->fmt = AUDIO_FORMAT_S8;  break;
106     case AC_FMT_BITS_16: as->fmt = AUDIO_FORMAT_S16; break;
107     case AC_FMT_BITS_32: as->fmt = AUDIO_FORMAT_S32; break;
108     }
109 
110     as->nchannels = ((format & AC_FMT_CHAN_MASK) >> AC_FMT_CHAN_SHIFT) + 1;
111 }
112 
113 /* -------------------------------------------------------------------------- */
114 /*
115  * HDA codec descriptions
116  */
117 
118 /* some defines */
119 
120 #define QEMU_HDA_ID_VENDOR  0x1af4
121 #define QEMU_HDA_PCM_FORMATS (AC_SUPPCM_BITS_16 |       \
122                               0x1fc /* 16 -> 96 kHz */)
123 #define QEMU_HDA_AMP_NONE    (0)
124 #define QEMU_HDA_AMP_STEPS   0x4a
125 
126 #define   PARAM mixemu
127 #define   HDA_MIXER
128 #include "hda-codec-common.h"
129 
130 #define   PARAM nomixemu
131 #include  "hda-codec-common.h"
132 
133 #define HDA_TIMER_TICKS (SCALE_MS)
134 #define B_SIZE sizeof(st->buf)
135 #define B_MASK (sizeof(st->buf) - 1)
136 
137 /* -------------------------------------------------------------------------- */
138 
139 static const char *fmt2name[] = {
140     [ AUDIO_FORMAT_U8  ] = "PCM-U8",
141     [ AUDIO_FORMAT_S8  ] = "PCM-S8",
142     [ AUDIO_FORMAT_U16 ] = "PCM-U16",
143     [ AUDIO_FORMAT_S16 ] = "PCM-S16",
144     [ AUDIO_FORMAT_U32 ] = "PCM-U32",
145     [ AUDIO_FORMAT_S32 ] = "PCM-S32",
146 };
147 
148 typedef struct HDAAudioState HDAAudioState;
149 typedef struct HDAAudioStream HDAAudioStream;
150 
151 struct HDAAudioStream {
152     HDAAudioState *state;
153     const desc_node *node;
154     bool output, running;
155     uint32_t stream;
156     uint32_t channel;
157     uint32_t format;
158     uint32_t gain_left, gain_right;
159     bool mute_left, mute_right;
160     struct audsettings as;
161     union {
162         SWVoiceIn *in;
163         SWVoiceOut *out;
164     } voice;
165     uint8_t compat_buf[HDA_BUFFER_SIZE];
166     uint32_t compat_bpos;
167     uint8_t buf[8192]; /* size must be power of two */
168     int64_t rpos;
169     int64_t wpos;
170     QEMUTimer *buft;
171     int64_t buft_start;
172 };
173 
174 #define TYPE_HDA_AUDIO "hda-audio"
175 OBJECT_DECLARE_SIMPLE_TYPE(HDAAudioState, HDA_AUDIO)
176 
177 struct HDAAudioState {
178     HDACodecDevice hda;
179     const char *name;
180 
181     QEMUSoundCard card;
182     const desc_codec *desc;
183     HDAAudioStream st[4];
184     bool running_compat[16];
185     bool running_real[2 * 16];
186 
187     /* properties */
188     uint32_t debug;
189     bool     mixer;
190     bool     use_timer;
191 };
192 
193 static inline int64_t hda_bytes_per_second(HDAAudioStream *st)
194 {
195     return 2LL * st->as.nchannels * st->as.freq;
196 }
197 
198 static inline void hda_timer_sync_adjust(HDAAudioStream *st, int64_t target_pos)
199 {
200     int64_t limit = B_SIZE / 8;
201     int64_t corr = 0;
202 
203     if (target_pos > limit) {
204         corr = HDA_TIMER_TICKS;
205     }
206     if (target_pos < -limit) {
207         corr = -HDA_TIMER_TICKS;
208     }
209     if (target_pos < -(2 * limit)) {
210         corr = -(4 * HDA_TIMER_TICKS);
211     }
212     if (corr == 0) {
213         return;
214     }
215 
216     trace_hda_audio_adjust(st->node->name, target_pos);
217     st->buft_start += corr;
218 }
219 
220 static void hda_audio_input_timer(void *opaque)
221 {
222     HDAAudioStream *st = opaque;
223 
224     int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
225 
226     int64_t buft_start = st->buft_start;
227     int64_t wpos = st->wpos;
228     int64_t rpos = st->rpos;
229 
230     int64_t wanted_rpos = hda_bytes_per_second(st) * (now - buft_start)
231                           / NANOSECONDS_PER_SECOND;
232     wanted_rpos &= -4; /* IMPORTANT! clip to frames */
233 
234     if (wanted_rpos <= rpos) {
235         /* we already transmitted the data */
236         goto out_timer;
237     }
238 
239     int64_t to_transfer = MIN(wpos - rpos, wanted_rpos - rpos);
240     while (to_transfer) {
241         uint32_t start = (rpos & B_MASK);
242         uint32_t chunk = MIN(B_SIZE - start, to_transfer);
243         int rc = hda_codec_xfer(
244                 &st->state->hda, st->stream, false, st->buf + start, chunk);
245         if (!rc) {
246             break;
247         }
248         rpos += chunk;
249         to_transfer -= chunk;
250         st->rpos += chunk;
251     }
252 
253 out_timer:
254 
255     if (st->running) {
256         timer_mod_anticipate_ns(st->buft, now + HDA_TIMER_TICKS);
257     }
258 }
259 
260 static void hda_audio_input_cb(void *opaque, int avail)
261 {
262     HDAAudioStream *st = opaque;
263 
264     int64_t wpos = st->wpos;
265     int64_t rpos = st->rpos;
266 
267     int64_t to_transfer = MIN(B_SIZE - (wpos - rpos), avail);
268 
269     while (to_transfer) {
270         uint32_t start = (uint32_t) (wpos & B_MASK);
271         uint32_t chunk = (uint32_t) MIN(B_SIZE - start, to_transfer);
272         uint32_t read = AUD_read(st->voice.in, st->buf + start, chunk);
273         wpos += read;
274         to_transfer -= read;
275         st->wpos += read;
276         if (chunk != read) {
277             break;
278         }
279     }
280 
281     hda_timer_sync_adjust(st, -((wpos - rpos) - (B_SIZE >> 1)));
282 }
283 
284 static void hda_audio_output_timer(void *opaque)
285 {
286     HDAAudioStream *st = opaque;
287 
288     int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
289 
290     int64_t buft_start = st->buft_start;
291     int64_t wpos = st->wpos;
292     int64_t rpos = st->rpos;
293 
294     int64_t wanted_wpos = hda_bytes_per_second(st) * (now - buft_start)
295                           / NANOSECONDS_PER_SECOND;
296     wanted_wpos &= -4; /* IMPORTANT! clip to frames */
297 
298     if (wanted_wpos <= wpos) {
299         /* we already received the data */
300         goto out_timer;
301     }
302 
303     int64_t to_transfer = MIN(B_SIZE - (wpos - rpos), wanted_wpos - wpos);
304     while (to_transfer) {
305         uint32_t start = (wpos & B_MASK);
306         uint32_t chunk = MIN(B_SIZE - start, to_transfer);
307         int rc = hda_codec_xfer(
308                 &st->state->hda, st->stream, true, st->buf + start, chunk);
309         if (!rc) {
310             break;
311         }
312         wpos += chunk;
313         to_transfer -= chunk;
314         st->wpos += chunk;
315     }
316 
317 out_timer:
318 
319     if (st->running) {
320         timer_mod_anticipate_ns(st->buft, now + HDA_TIMER_TICKS);
321     }
322 }
323 
324 static void hda_audio_output_cb(void *opaque, int avail)
325 {
326     HDAAudioStream *st = opaque;
327 
328     int64_t wpos = st->wpos;
329     int64_t rpos = st->rpos;
330 
331     int64_t to_transfer = MIN(wpos - rpos, avail);
332 
333     if (wpos - rpos == B_SIZE) {
334         /* drop buffer, reset timer adjust */
335         st->rpos = 0;
336         st->wpos = 0;
337         st->buft_start = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
338         trace_hda_audio_overrun(st->node->name);
339         return;
340     }
341 
342     while (to_transfer) {
343         uint32_t start = (uint32_t) (rpos & B_MASK);
344         uint32_t chunk = (uint32_t) MIN(B_SIZE - start, to_transfer);
345         uint32_t written = AUD_write(st->voice.out, st->buf + start, chunk);
346         rpos += written;
347         to_transfer -= written;
348         st->rpos += written;
349         if (chunk != written) {
350             break;
351         }
352     }
353 
354     hda_timer_sync_adjust(st, (wpos - rpos) - (B_SIZE >> 1));
355 }
356 
357 static void hda_audio_compat_input_cb(void *opaque, int avail)
358 {
359     HDAAudioStream *st = opaque;
360     int recv = 0;
361     int len;
362     bool rc;
363 
364     while (avail - recv >= sizeof(st->compat_buf)) {
365         if (st->compat_bpos != sizeof(st->compat_buf)) {
366             len = AUD_read(st->voice.in, st->compat_buf + st->compat_bpos,
367                            sizeof(st->compat_buf) - st->compat_bpos);
368             st->compat_bpos += len;
369             recv += len;
370             if (st->compat_bpos != sizeof(st->compat_buf)) {
371                 break;
372             }
373         }
374         rc = hda_codec_xfer(&st->state->hda, st->stream, false,
375                             st->compat_buf, sizeof(st->compat_buf));
376         if (!rc) {
377             break;
378         }
379         st->compat_bpos = 0;
380     }
381 }
382 
383 static void hda_audio_compat_output_cb(void *opaque, int avail)
384 {
385     HDAAudioStream *st = opaque;
386     int sent = 0;
387     int len;
388     bool rc;
389 
390     while (avail - sent >= sizeof(st->compat_buf)) {
391         if (st->compat_bpos == sizeof(st->compat_buf)) {
392             rc = hda_codec_xfer(&st->state->hda, st->stream, true,
393                                 st->compat_buf, sizeof(st->compat_buf));
394             if (!rc) {
395                 break;
396             }
397             st->compat_bpos = 0;
398         }
399         len = AUD_write(st->voice.out, st->compat_buf + st->compat_bpos,
400                         sizeof(st->compat_buf) - st->compat_bpos);
401         st->compat_bpos += len;
402         sent += len;
403         if (st->compat_bpos != sizeof(st->compat_buf)) {
404             break;
405         }
406     }
407 }
408 
409 static void hda_audio_set_running(HDAAudioStream *st, bool running)
410 {
411     if (st->node == NULL) {
412         return;
413     }
414     if (st->running == running) {
415         return;
416     }
417     st->running = running;
418     trace_hda_audio_running(st->node->name, st->stream, st->running);
419     if (st->state->use_timer) {
420         if (running) {
421             int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
422             st->rpos = 0;
423             st->wpos = 0;
424             st->buft_start = now;
425             timer_mod_anticipate_ns(st->buft, now + HDA_TIMER_TICKS);
426         } else {
427             timer_del(st->buft);
428         }
429     }
430     if (st->output) {
431         AUD_set_active_out(st->voice.out, st->running);
432     } else {
433         AUD_set_active_in(st->voice.in, st->running);
434     }
435 }
436 
437 static void hda_audio_set_amp(HDAAudioStream *st)
438 {
439     bool muted;
440     uint32_t left, right;
441 
442     if (st->node == NULL) {
443         return;
444     }
445 
446     muted = st->mute_left && st->mute_right;
447     left  = st->mute_left  ? 0 : st->gain_left;
448     right = st->mute_right ? 0 : st->gain_right;
449 
450     left = left * 255 / QEMU_HDA_AMP_STEPS;
451     right = right * 255 / QEMU_HDA_AMP_STEPS;
452 
453     if (!st->state->mixer) {
454         return;
455     }
456     if (st->output) {
457         AUD_set_volume_out(st->voice.out, muted, left, right);
458     } else {
459         AUD_set_volume_in(st->voice.in, muted, left, right);
460     }
461 }
462 
463 static void hda_audio_setup(HDAAudioStream *st)
464 {
465     bool use_timer = st->state->use_timer;
466     audio_callback_fn cb;
467 
468     if (st->node == NULL) {
469         return;
470     }
471 
472     trace_hda_audio_format(st->node->name, st->as.nchannels,
473                            fmt2name[st->as.fmt], st->as.freq);
474 
475     if (st->output) {
476         if (use_timer) {
477             cb = hda_audio_output_cb;
478             st->buft = timer_new_ns(QEMU_CLOCK_VIRTUAL,
479                                     hda_audio_output_timer, st);
480         } else {
481             cb = hda_audio_compat_output_cb;
482         }
483         st->voice.out = AUD_open_out(&st->state->card, st->voice.out,
484                                      st->node->name, st, cb, &st->as);
485     } else {
486         if (use_timer) {
487             cb = hda_audio_input_cb;
488             st->buft = timer_new_ns(QEMU_CLOCK_VIRTUAL,
489                                     hda_audio_input_timer, st);
490         } else {
491             cb = hda_audio_compat_input_cb;
492         }
493         st->voice.in = AUD_open_in(&st->state->card, st->voice.in,
494                                    st->node->name, st, cb, &st->as);
495     }
496 }
497 
498 static void hda_audio_command(HDACodecDevice *hda, uint32_t nid, uint32_t data)
499 {
500     HDAAudioState *a = HDA_AUDIO(hda);
501     HDAAudioStream *st;
502     const desc_node *node = NULL;
503     const desc_param *param;
504     uint32_t verb, payload, response, count, shift;
505 
506     if ((data & 0x70000) == 0x70000) {
507         /* 12/8 id/payload */
508         verb = (data >> 8) & 0xfff;
509         payload = data & 0x00ff;
510     } else {
511         /* 4/16 id/payload */
512         verb = (data >> 8) & 0xf00;
513         payload = data & 0xffff;
514     }
515 
516     node = hda_codec_find_node(a->desc, nid);
517     if (node == NULL) {
518         goto fail;
519     }
520     dprint(a, 2, "%s: nid %d (%s), verb 0x%x, payload 0x%x\n",
521            __func__, nid, node->name, verb, payload);
522 
523     switch (verb) {
524     /* all nodes */
525     case AC_VERB_PARAMETERS:
526         param = hda_codec_find_param(node, payload);
527         if (param == NULL) {
528             goto fail;
529         }
530         hda_codec_response(hda, true, param->val);
531         break;
532     case AC_VERB_GET_SUBSYSTEM_ID:
533         hda_codec_response(hda, true, a->desc->iid);
534         break;
535 
536     /* all functions */
537     case AC_VERB_GET_CONNECT_LIST:
538         param = hda_codec_find_param(node, AC_PAR_CONNLIST_LEN);
539         count = param ? param->val : 0;
540         response = 0;
541         shift = 0;
542         while (payload < count && shift < 32) {
543             response |= node->conn[payload] << shift;
544             payload++;
545             shift += 8;
546         }
547         hda_codec_response(hda, true, response);
548         break;
549 
550     /* pin widget */
551     case AC_VERB_GET_CONFIG_DEFAULT:
552         hda_codec_response(hda, true, node->config);
553         break;
554     case AC_VERB_GET_PIN_WIDGET_CONTROL:
555         hda_codec_response(hda, true, node->pinctl);
556         break;
557     case AC_VERB_SET_PIN_WIDGET_CONTROL:
558         if (node->pinctl != payload) {
559             dprint(a, 1, "unhandled pin control bit\n");
560         }
561         hda_codec_response(hda, true, 0);
562         break;
563 
564     /* audio in/out widget */
565     case AC_VERB_SET_CHANNEL_STREAMID:
566         st = a->st + node->stindex;
567         if (st->node == NULL) {
568             goto fail;
569         }
570         hda_audio_set_running(st, false);
571         st->stream = (payload >> 4) & 0x0f;
572         st->channel = payload & 0x0f;
573         dprint(a, 2, "%s: stream %d, channel %d\n",
574                st->node->name, st->stream, st->channel);
575         hda_audio_set_running(st, a->running_real[st->output * 16 + st->stream]);
576         hda_codec_response(hda, true, 0);
577         break;
578     case AC_VERB_GET_CONV:
579         st = a->st + node->stindex;
580         if (st->node == NULL) {
581             goto fail;
582         }
583         response = st->stream << 4 | st->channel;
584         hda_codec_response(hda, true, response);
585         break;
586     case AC_VERB_SET_STREAM_FORMAT:
587         st = a->st + node->stindex;
588         if (st->node == NULL) {
589             goto fail;
590         }
591         st->format = payload;
592         hda_codec_parse_fmt(st->format, &st->as);
593         hda_audio_setup(st);
594         hda_codec_response(hda, true, 0);
595         break;
596     case AC_VERB_GET_STREAM_FORMAT:
597         st = a->st + node->stindex;
598         if (st->node == NULL) {
599             goto fail;
600         }
601         hda_codec_response(hda, true, st->format);
602         break;
603     case AC_VERB_GET_AMP_GAIN_MUTE:
604         st = a->st + node->stindex;
605         if (st->node == NULL) {
606             goto fail;
607         }
608         if (payload & AC_AMP_GET_LEFT) {
609             response = st->gain_left | (st->mute_left ? AC_AMP_MUTE : 0);
610         } else {
611             response = st->gain_right | (st->mute_right ? AC_AMP_MUTE : 0);
612         }
613         hda_codec_response(hda, true, response);
614         break;
615     case AC_VERB_SET_AMP_GAIN_MUTE:
616         st = a->st + node->stindex;
617         if (st->node == NULL) {
618             goto fail;
619         }
620         dprint(a, 1, "amp (%s): %s%s%s%s index %d  gain %3d %s\n",
621                st->node->name,
622                (payload & AC_AMP_SET_OUTPUT) ? "o" : "-",
623                (payload & AC_AMP_SET_INPUT)  ? "i" : "-",
624                (payload & AC_AMP_SET_LEFT)   ? "l" : "-",
625                (payload & AC_AMP_SET_RIGHT)  ? "r" : "-",
626                (payload & AC_AMP_SET_INDEX) >> AC_AMP_SET_INDEX_SHIFT,
627                (payload & AC_AMP_GAIN),
628                (payload & AC_AMP_MUTE) ? "muted" : "");
629         if (payload & AC_AMP_SET_LEFT) {
630             st->gain_left = payload & AC_AMP_GAIN;
631             st->mute_left = payload & AC_AMP_MUTE;
632         }
633         if (payload & AC_AMP_SET_RIGHT) {
634             st->gain_right = payload & AC_AMP_GAIN;
635             st->mute_right = payload & AC_AMP_MUTE;
636         }
637         hda_audio_set_amp(st);
638         hda_codec_response(hda, true, 0);
639         break;
640 
641     /* not supported */
642     case AC_VERB_SET_POWER_STATE:
643     case AC_VERB_GET_POWER_STATE:
644     case AC_VERB_GET_SDI_SELECT:
645         hda_codec_response(hda, true, 0);
646         break;
647     default:
648         goto fail;
649     }
650     return;
651 
652 fail:
653     dprint(a, 1, "%s: not handled: nid %d (%s), verb 0x%x, payload 0x%x\n",
654            __func__, nid, node ? node->name : "?", verb, payload);
655     hda_codec_response(hda, true, 0);
656 }
657 
658 static void hda_audio_stream(HDACodecDevice *hda, uint32_t stnr, bool running, bool output)
659 {
660     HDAAudioState *a = HDA_AUDIO(hda);
661     int s;
662 
663     a->running_compat[stnr] = running;
664     a->running_real[output * 16 + stnr] = running;
665     for (s = 0; s < ARRAY_SIZE(a->st); s++) {
666         if (a->st[s].node == NULL) {
667             continue;
668         }
669         if (a->st[s].output != output) {
670             continue;
671         }
672         if (a->st[s].stream != stnr) {
673             continue;
674         }
675         hda_audio_set_running(&a->st[s], running);
676     }
677 }
678 
679 static int hda_audio_init(HDACodecDevice *hda, const struct desc_codec *desc)
680 {
681     HDAAudioState *a = HDA_AUDIO(hda);
682     HDAAudioStream *st;
683     const desc_node *node;
684     const desc_param *param;
685     uint32_t i, type;
686 
687     a->desc = desc;
688     a->name = object_get_typename(OBJECT(a));
689     dprint(a, 1, "%s: cad %d\n", __func__, a->hda.cad);
690 
691     AUD_register_card("hda", &a->card);
692     for (i = 0; i < a->desc->nnodes; i++) {
693         node = a->desc->nodes + i;
694         param = hda_codec_find_param(node, AC_PAR_AUDIO_WIDGET_CAP);
695         if (param == NULL) {
696             continue;
697         }
698         type = (param->val & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
699         switch (type) {
700         case AC_WID_AUD_OUT:
701         case AC_WID_AUD_IN:
702             assert(node->stindex < ARRAY_SIZE(a->st));
703             st = a->st + node->stindex;
704             st->state = a;
705             st->node = node;
706             if (type == AC_WID_AUD_OUT) {
707                 /* unmute output by default */
708                 st->gain_left = QEMU_HDA_AMP_STEPS;
709                 st->gain_right = QEMU_HDA_AMP_STEPS;
710                 st->compat_bpos = sizeof(st->compat_buf);
711                 st->output = true;
712             } else {
713                 st->output = false;
714             }
715             st->format = AC_FMT_TYPE_PCM | AC_FMT_BITS_16 |
716                 (1 << AC_FMT_CHAN_SHIFT);
717             hda_codec_parse_fmt(st->format, &st->as);
718             hda_audio_setup(st);
719             break;
720         }
721     }
722     return 0;
723 }
724 
725 static void hda_audio_exit(HDACodecDevice *hda)
726 {
727     HDAAudioState *a = HDA_AUDIO(hda);
728     HDAAudioStream *st;
729     int i;
730 
731     dprint(a, 1, "%s\n", __func__);
732     for (i = 0; i < ARRAY_SIZE(a->st); i++) {
733         st = a->st + i;
734         if (st->node == NULL) {
735             continue;
736         }
737         if (a->use_timer) {
738             timer_del(st->buft);
739         }
740         if (st->output) {
741             AUD_close_out(&a->card, st->voice.out);
742         } else {
743             AUD_close_in(&a->card, st->voice.in);
744         }
745     }
746     AUD_remove_card(&a->card);
747 }
748 
749 static int hda_audio_post_load(void *opaque, int version)
750 {
751     HDAAudioState *a = opaque;
752     HDAAudioStream *st;
753     int i;
754 
755     dprint(a, 1, "%s\n", __func__);
756     if (version == 1) {
757         /* assume running_compat[] is for output streams */
758         for (i = 0; i < ARRAY_SIZE(a->running_compat); i++)
759             a->running_real[16 + i] = a->running_compat[i];
760     }
761 
762     for (i = 0; i < ARRAY_SIZE(a->st); i++) {
763         st = a->st + i;
764         if (st->node == NULL)
765             continue;
766         hda_codec_parse_fmt(st->format, &st->as);
767         hda_audio_setup(st);
768         hda_audio_set_amp(st);
769         hda_audio_set_running(st, a->running_real[st->output * 16 + st->stream]);
770     }
771     return 0;
772 }
773 
774 static void hda_audio_reset(DeviceState *dev)
775 {
776     HDAAudioState *a = HDA_AUDIO(dev);
777     HDAAudioStream *st;
778     int i;
779 
780     dprint(a, 1, "%s\n", __func__);
781     for (i = 0; i < ARRAY_SIZE(a->st); i++) {
782         st = a->st + i;
783         if (st->node != NULL) {
784             hda_audio_set_running(st, false);
785         }
786     }
787 }
788 
789 static bool vmstate_hda_audio_stream_buf_needed(void *opaque)
790 {
791     HDAAudioStream *st = opaque;
792     return st->state && st->state->use_timer;
793 }
794 
795 static const VMStateDescription vmstate_hda_audio_stream_buf = {
796     .name = "hda-audio-stream/buffer",
797     .version_id = 1,
798     .needed = vmstate_hda_audio_stream_buf_needed,
799     .fields = (VMStateField[]) {
800         VMSTATE_BUFFER(buf, HDAAudioStream),
801         VMSTATE_INT64(rpos, HDAAudioStream),
802         VMSTATE_INT64(wpos, HDAAudioStream),
803         VMSTATE_TIMER_PTR(buft, HDAAudioStream),
804         VMSTATE_INT64(buft_start, HDAAudioStream),
805         VMSTATE_END_OF_LIST()
806     }
807 };
808 
809 static const VMStateDescription vmstate_hda_audio_stream = {
810     .name = "hda-audio-stream",
811     .version_id = 1,
812     .fields = (VMStateField[]) {
813         VMSTATE_UINT32(stream, HDAAudioStream),
814         VMSTATE_UINT32(channel, HDAAudioStream),
815         VMSTATE_UINT32(format, HDAAudioStream),
816         VMSTATE_UINT32(gain_left, HDAAudioStream),
817         VMSTATE_UINT32(gain_right, HDAAudioStream),
818         VMSTATE_BOOL(mute_left, HDAAudioStream),
819         VMSTATE_BOOL(mute_right, HDAAudioStream),
820         VMSTATE_UINT32(compat_bpos, HDAAudioStream),
821         VMSTATE_BUFFER(compat_buf, HDAAudioStream),
822         VMSTATE_END_OF_LIST()
823     },
824     .subsections = (const VMStateDescription * []) {
825         &vmstate_hda_audio_stream_buf,
826         NULL
827     }
828 };
829 
830 static const VMStateDescription vmstate_hda_audio = {
831     .name = "hda-audio",
832     .version_id = 2,
833     .post_load = hda_audio_post_load,
834     .fields = (VMStateField[]) {
835         VMSTATE_STRUCT_ARRAY(st, HDAAudioState, 4, 0,
836                              vmstate_hda_audio_stream,
837                              HDAAudioStream),
838         VMSTATE_BOOL_ARRAY(running_compat, HDAAudioState, 16),
839         VMSTATE_BOOL_ARRAY_V(running_real, HDAAudioState, 2 * 16, 2),
840         VMSTATE_END_OF_LIST()
841     }
842 };
843 
844 static Property hda_audio_properties[] = {
845     DEFINE_AUDIO_PROPERTIES(HDAAudioState, card),
846     DEFINE_PROP_UINT32("debug", HDAAudioState, debug,   0),
847     DEFINE_PROP_BOOL("mixer", HDAAudioState, mixer,  true),
848     DEFINE_PROP_BOOL("use-timer", HDAAudioState, use_timer,  true),
849     DEFINE_PROP_END_OF_LIST(),
850 };
851 
852 static int hda_audio_init_output(HDACodecDevice *hda)
853 {
854     HDAAudioState *a = HDA_AUDIO(hda);
855 
856     if (!a->mixer) {
857         return hda_audio_init(hda, &output_nomixemu);
858     } else {
859         return hda_audio_init(hda, &output_mixemu);
860     }
861 }
862 
863 static int hda_audio_init_duplex(HDACodecDevice *hda)
864 {
865     HDAAudioState *a = HDA_AUDIO(hda);
866 
867     if (!a->mixer) {
868         return hda_audio_init(hda, &duplex_nomixemu);
869     } else {
870         return hda_audio_init(hda, &duplex_mixemu);
871     }
872 }
873 
874 static int hda_audio_init_micro(HDACodecDevice *hda)
875 {
876     HDAAudioState *a = HDA_AUDIO(hda);
877 
878     if (!a->mixer) {
879         return hda_audio_init(hda, &micro_nomixemu);
880     } else {
881         return hda_audio_init(hda, &micro_mixemu);
882     }
883 }
884 
885 static void hda_audio_base_class_init(ObjectClass *klass, void *data)
886 {
887     DeviceClass *dc = DEVICE_CLASS(klass);
888     HDACodecDeviceClass *k = HDA_CODEC_DEVICE_CLASS(klass);
889 
890     k->exit = hda_audio_exit;
891     k->command = hda_audio_command;
892     k->stream = hda_audio_stream;
893     set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
894     dc->reset = hda_audio_reset;
895     dc->vmsd = &vmstate_hda_audio;
896     device_class_set_props(dc, hda_audio_properties);
897 }
898 
899 static const TypeInfo hda_audio_info = {
900     .name          = TYPE_HDA_AUDIO,
901     .parent        = TYPE_HDA_CODEC_DEVICE,
902     .instance_size = sizeof(HDAAudioState),
903     .class_init    = hda_audio_base_class_init,
904     .abstract      = true,
905 };
906 
907 static void hda_audio_output_class_init(ObjectClass *klass, void *data)
908 {
909     DeviceClass *dc = DEVICE_CLASS(klass);
910     HDACodecDeviceClass *k = HDA_CODEC_DEVICE_CLASS(klass);
911 
912     k->init = hda_audio_init_output;
913     dc->desc = "HDA Audio Codec, output-only (line-out)";
914 }
915 
916 static const TypeInfo hda_audio_output_info = {
917     .name          = "hda-output",
918     .parent        = TYPE_HDA_AUDIO,
919     .class_init    = hda_audio_output_class_init,
920 };
921 
922 static void hda_audio_duplex_class_init(ObjectClass *klass, void *data)
923 {
924     DeviceClass *dc = DEVICE_CLASS(klass);
925     HDACodecDeviceClass *k = HDA_CODEC_DEVICE_CLASS(klass);
926 
927     k->init = hda_audio_init_duplex;
928     dc->desc = "HDA Audio Codec, duplex (line-out, line-in)";
929 }
930 
931 static const TypeInfo hda_audio_duplex_info = {
932     .name          = "hda-duplex",
933     .parent        = TYPE_HDA_AUDIO,
934     .class_init    = hda_audio_duplex_class_init,
935 };
936 
937 static void hda_audio_micro_class_init(ObjectClass *klass, void *data)
938 {
939     DeviceClass *dc = DEVICE_CLASS(klass);
940     HDACodecDeviceClass *k = HDA_CODEC_DEVICE_CLASS(klass);
941 
942     k->init = hda_audio_init_micro;
943     dc->desc = "HDA Audio Codec, duplex (speaker, microphone)";
944 }
945 
946 static const TypeInfo hda_audio_micro_info = {
947     .name          = "hda-micro",
948     .parent        = TYPE_HDA_AUDIO,
949     .class_init    = hda_audio_micro_class_init,
950 };
951 
952 static void hda_audio_register_types(void)
953 {
954     type_register_static(&hda_audio_info);
955     type_register_static(&hda_audio_output_info);
956     type_register_static(&hda_audio_duplex_info);
957     type_register_static(&hda_audio_micro_info);
958 }
959 
960 type_init(hda_audio_register_types)
961