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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * HD-audio codec core device
4 */
5
6#include <linux/init.h>
7#include <linux/delay.h>
8#include <linux/device.h>
9#include <linux/slab.h>
10#include <linux/module.h>
11#include <linux/export.h>
12#include <linux/pm_runtime.h>
13#include <sound/hdaudio.h>
14#include <sound/hda_regmap.h>
15#include <sound/pcm.h>
16#include <sound/pcm_params.h>
17#include "local.h"
18
19static void setup_fg_nodes(struct hdac_device *codec);
20static int get_codec_vendor_name(struct hdac_device *codec);
21
22static void default_release(struct device *dev)
23{
24 snd_hdac_device_exit(dev_to_hdac_dev(dev));
25}
26
27/**
28 * snd_hdac_device_init - initialize the HD-audio codec base device
29 * @codec: device to initialize
30 * @bus: but to attach
31 * @name: device name string
32 * @addr: codec address
33 *
34 * Returns zero for success or a negative error code.
35 *
36 * This function increments the runtime PM counter and marks it active.
37 * The caller needs to turn it off appropriately later.
38 *
39 * The caller needs to set the device's release op properly by itself.
40 */
41int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus,
42 const char *name, unsigned int addr)
43{
44 struct device *dev;
45 hda_nid_t fg;
46 int err;
47
48 dev = &codec->dev;
49 device_initialize(dev);
50 dev->parent = bus->dev;
51 dev->bus = &snd_hda_bus_type;
52 dev->release = default_release;
53 dev->groups = hdac_dev_attr_groups;
54 dev_set_name(dev, "%s", name);
55 device_enable_async_suspend(dev);
56
57 codec->bus = bus;
58 codec->addr = addr;
59 codec->type = HDA_DEV_CORE;
60 mutex_init(&codec->widget_lock);
61 mutex_init(&codec->regmap_lock);
62 pm_runtime_set_active(&codec->dev);
63 pm_runtime_get_noresume(&codec->dev);
64 atomic_set(&codec->in_pm, 0);
65
66 err = snd_hdac_bus_add_device(bus, codec);
67 if (err < 0)
68 goto error;
69
70 /* fill parameters */
71 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
72 AC_PAR_VENDOR_ID);
73 if (codec->vendor_id == -1) {
74 /* read again, hopefully the access method was corrected
75 * in the last read...
76 */
77 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
78 AC_PAR_VENDOR_ID);
79 }
80
81 codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
82 AC_PAR_SUBSYSTEM_ID);
83 codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
84 AC_PAR_REV_ID);
85
86 setup_fg_nodes(codec);
87 if (!codec->afg && !codec->mfg) {
88 dev_err(dev, "no AFG or MFG node found\n");
89 err = -ENODEV;
90 goto error;
91 }
92
93 fg = codec->afg ? codec->afg : codec->mfg;
94
95 err = snd_hdac_refresh_widgets(codec);
96 if (err < 0)
97 goto error;
98
99 codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE);
100 /* reread ssid if not set by parameter */
101 if (codec->subsystem_id == -1 || codec->subsystem_id == 0)
102 snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0,
103 &codec->subsystem_id);
104
105 err = get_codec_vendor_name(codec);
106 if (err < 0)
107 goto error;
108
109 codec->chip_name = kasprintf(GFP_KERNEL, "ID %x",
110 codec->vendor_id & 0xffff);
111 if (!codec->chip_name) {
112 err = -ENOMEM;
113 goto error;
114 }
115
116 return 0;
117
118 error:
119 put_device(&codec->dev);
120 return err;
121}
122EXPORT_SYMBOL_GPL(snd_hdac_device_init);
123
124/**
125 * snd_hdac_device_exit - clean up the HD-audio codec base device
126 * @codec: device to clean up
127 */
128void snd_hdac_device_exit(struct hdac_device *codec)
129{
130 pm_runtime_put_noidle(&codec->dev);
131 /* keep balance of runtime PM child_count in parent device */
132 pm_runtime_set_suspended(&codec->dev);
133 snd_hdac_bus_remove_device(codec->bus, codec);
134 kfree(codec->vendor_name);
135 kfree(codec->chip_name);
136}
137EXPORT_SYMBOL_GPL(snd_hdac_device_exit);
138
139/**
140 * snd_hdac_device_register - register the hd-audio codec base device
141 * @codec: the device to register
142 */
143int snd_hdac_device_register(struct hdac_device *codec)
144{
145 int err;
146
147 err = device_add(&codec->dev);
148 if (err < 0)
149 return err;
150 mutex_lock(&codec->widget_lock);
151 err = hda_widget_sysfs_init(codec);
152 mutex_unlock(&codec->widget_lock);
153 if (err < 0) {
154 device_del(&codec->dev);
155 return err;
156 }
157
158 return 0;
159}
160EXPORT_SYMBOL_GPL(snd_hdac_device_register);
161
162/**
163 * snd_hdac_device_unregister - unregister the hd-audio codec base device
164 * @codec: the device to unregister
165 */
166void snd_hdac_device_unregister(struct hdac_device *codec)
167{
168 if (device_is_registered(&codec->dev)) {
169 mutex_lock(&codec->widget_lock);
170 hda_widget_sysfs_exit(codec);
171 mutex_unlock(&codec->widget_lock);
172 device_del(&codec->dev);
173 snd_hdac_bus_remove_device(codec->bus, codec);
174 }
175}
176EXPORT_SYMBOL_GPL(snd_hdac_device_unregister);
177
178/**
179 * snd_hdac_device_set_chip_name - set/update the codec name
180 * @codec: the HDAC device
181 * @name: name string to set
182 *
183 * Returns 0 if the name is set or updated, or a negative error code.
184 */
185int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name)
186{
187 char *newname;
188
189 if (!name)
190 return 0;
191 newname = kstrdup(name, GFP_KERNEL);
192 if (!newname)
193 return -ENOMEM;
194 kfree(codec->chip_name);
195 codec->chip_name = newname;
196 return 0;
197}
198EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);
199
200/**
201 * snd_hdac_codec_modalias - give the module alias name
202 * @codec: HDAC device
203 * @buf: string buffer to store
204 * @size: string buffer size
205 *
206 * Returns the size of string, like snprintf(), or a negative error code.
207 */
208int snd_hdac_codec_modalias(const struct hdac_device *codec, char *buf, size_t size)
209{
210 return scnprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n",
211 codec->vendor_id, codec->revision_id, codec->type);
212}
213EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias);
214
215/**
216 * snd_hdac_make_cmd - compose a 32bit command word to be sent to the
217 * HD-audio controller
218 * @codec: the codec object
219 * @nid: NID to encode
220 * @verb: verb to encode
221 * @parm: parameter to encode
222 *
223 * Return an encoded command verb or -1 for error.
224 */
225static unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
226 unsigned int verb, unsigned int parm)
227{
228 u32 val, addr;
229
230 addr = codec->addr;
231 if ((addr & ~0xf) || (nid & ~0x7f) ||
232 (verb & ~0xfff) || (parm & ~0xffff)) {
233 dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n",
234 addr, nid, verb, parm);
235 return -1;
236 }
237
238 val = addr << 28;
239 val |= (u32)nid << 20;
240 val |= verb << 8;
241 val |= parm;
242 return val;
243}
244
245/**
246 * snd_hdac_exec_verb - execute an encoded verb
247 * @codec: the codec object
248 * @cmd: encoded verb to execute
249 * @flags: optional flags, pass zero for default
250 * @res: the pointer to store the result, NULL if running async
251 *
252 * Returns zero if successful, or a negative error code.
253 *
254 * This calls the exec_verb op when set in hdac_codec. If not,
255 * call the default snd_hdac_bus_exec_verb().
256 */
257int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
258 unsigned int flags, unsigned int *res)
259{
260 if (codec->exec_verb)
261 return codec->exec_verb(codec, cmd, flags, res);
262 return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res);
263}
264
265
266/**
267 * snd_hdac_read - execute a verb
268 * @codec: the codec object
269 * @nid: NID to execute a verb
270 * @verb: verb to execute
271 * @parm: parameter for a verb
272 * @res: the pointer to store the result, NULL if running async
273 *
274 * Returns zero if successful, or a negative error code.
275 */
276int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
277 unsigned int verb, unsigned int parm, unsigned int *res)
278{
279 unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm);
280
281 return snd_hdac_exec_verb(codec, cmd, 0, res);
282}
283EXPORT_SYMBOL_GPL(snd_hdac_read);
284
285/**
286 * _snd_hdac_read_parm - read a parmeter
287 * @codec: the codec object
288 * @nid: NID to read a parameter
289 * @parm: parameter to read
290 * @res: pointer to store the read value
291 *
292 * This function returns zero or an error unlike snd_hdac_read_parm().
293 */
294int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
295 unsigned int *res)
296{
297 unsigned int cmd;
298
299 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
300 return snd_hdac_regmap_read_raw(codec, cmd, res);
301}
302EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
303
304/**
305 * snd_hdac_read_parm_uncached - read a codec parameter without caching
306 * @codec: the codec object
307 * @nid: NID to read a parameter
308 * @parm: parameter to read
309 *
310 * Returns -1 for error. If you need to distinguish the error more
311 * strictly, use snd_hdac_read() directly.
312 */
313int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
314 int parm)
315{
316 unsigned int cmd, val;
317
318 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
319 if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0)
320 return -1;
321 return val;
322}
323EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
324
325/**
326 * snd_hdac_override_parm - override read-only parameters
327 * @codec: the codec object
328 * @nid: NID for the parameter
329 * @parm: the parameter to change
330 * @val: the parameter value to overwrite
331 */
332int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
333 unsigned int parm, unsigned int val)
334{
335 unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm;
336 int err;
337
338 if (!codec->regmap)
339 return -EINVAL;
340
341 codec->caps_overwriting = true;
342 err = snd_hdac_regmap_write_raw(codec, verb, val);
343 codec->caps_overwriting = false;
344 return err;
345}
346EXPORT_SYMBOL_GPL(snd_hdac_override_parm);
347
348/**
349 * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes
350 * @codec: the codec object
351 * @nid: NID to inspect
352 * @start_id: the pointer to store the starting NID
353 *
354 * Returns the number of subtree nodes or zero if not found.
355 * This function reads parameters always without caching.
356 */
357int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
358 hda_nid_t *start_id)
359{
360 unsigned int parm;
361
362 parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT);
363 if (parm == -1) {
364 *start_id = 0;
365 return 0;
366 }
367 *start_id = (parm >> 16) & 0x7fff;
368 return (int)(parm & 0x7fff);
369}
370EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes);
371
372/*
373 * look for an AFG and MFG nodes
374 */
375static void setup_fg_nodes(struct hdac_device *codec)
376{
377 int i, total_nodes, function_id;
378 hda_nid_t nid;
379
380 total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
381 for (i = 0; i < total_nodes; i++, nid++) {
382 function_id = snd_hdac_read_parm(codec, nid,
383 AC_PAR_FUNCTION_TYPE);
384 switch (function_id & 0xff) {
385 case AC_GRP_AUDIO_FUNCTION:
386 codec->afg = nid;
387 codec->afg_function_id = function_id & 0xff;
388 codec->afg_unsol = (function_id >> 8) & 1;
389 break;
390 case AC_GRP_MODEM_FUNCTION:
391 codec->mfg = nid;
392 codec->mfg_function_id = function_id & 0xff;
393 codec->mfg_unsol = (function_id >> 8) & 1;
394 break;
395 default:
396 break;
397 }
398 }
399}
400
401/**
402 * snd_hdac_refresh_widgets - Reset the widget start/end nodes
403 * @codec: the codec object
404 */
405int snd_hdac_refresh_widgets(struct hdac_device *codec)
406{
407 hda_nid_t start_nid;
408 int nums, err = 0;
409
410 /*
411 * Serialize against multiple threads trying to update the sysfs
412 * widgets array.
413 */
414 mutex_lock(&codec->widget_lock);
415 nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid);
416 if (!start_nid || nums <= 0 || nums >= 0xff) {
417 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n",
418 codec->afg);
419 err = -EINVAL;
420 goto unlock;
421 }
422
423 err = hda_widget_sysfs_reinit(codec, start_nid, nums);
424 if (err < 0)
425 goto unlock;
426
427 codec->num_nodes = nums;
428 codec->start_nid = start_nid;
429 codec->end_nid = start_nid + nums;
430unlock:
431 mutex_unlock(&codec->widget_lock);
432 return err;
433}
434EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets);
435
436/* return CONNLIST_LEN parameter of the given widget */
437static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid)
438{
439 unsigned int wcaps = get_wcaps(codec, nid);
440 unsigned int parm;
441
442 if (!(wcaps & AC_WCAP_CONN_LIST) &&
443 get_wcaps_type(wcaps) != AC_WID_VOL_KNB)
444 return 0;
445
446 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN);
447 if (parm == -1)
448 parm = 0;
449 return parm;
450}
451
452/**
453 * snd_hdac_get_connections - get a widget connection list
454 * @codec: the codec object
455 * @nid: NID
456 * @conn_list: the array to store the results, can be NULL
457 * @max_conns: the max size of the given array
458 *
459 * Returns the number of connected widgets, zero for no connection, or a
460 * negative error code. When the number of elements don't fit with the
461 * given array size, it returns -ENOSPC.
462 *
463 * When @conn_list is NULL, it just checks the number of connections.
464 */
465int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
466 hda_nid_t *conn_list, int max_conns)
467{
468 unsigned int parm;
469 int i, conn_len, conns, err;
470 unsigned int shift, num_elems, mask;
471 hda_nid_t prev_nid;
472 int null_count = 0;
473
474 parm = get_num_conns(codec, nid);
475 if (!parm)
476 return 0;
477
478 if (parm & AC_CLIST_LONG) {
479 /* long form */
480 shift = 16;
481 num_elems = 2;
482 } else {
483 /* short form */
484 shift = 8;
485 num_elems = 4;
486 }
487 conn_len = parm & AC_CLIST_LENGTH;
488 mask = (1 << (shift-1)) - 1;
489
490 if (!conn_len)
491 return 0; /* no connection */
492
493 if (conn_len == 1) {
494 /* single connection */
495 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0,
496 &parm);
497 if (err < 0)
498 return err;
499 if (conn_list)
500 conn_list[0] = parm & mask;
501 return 1;
502 }
503
504 /* multi connection */
505 conns = 0;
506 prev_nid = 0;
507 for (i = 0; i < conn_len; i++) {
508 int range_val;
509 hda_nid_t val, n;
510
511 if (i % num_elems == 0) {
512 err = snd_hdac_read(codec, nid,
513 AC_VERB_GET_CONNECT_LIST, i,
514 &parm);
515 if (err < 0)
516 return -EIO;
517 }
518 range_val = !!(parm & (1 << (shift-1))); /* ranges */
519 val = parm & mask;
520 if (val == 0 && null_count++) { /* no second chance */
521 dev_dbg(&codec->dev,
522 "invalid CONNECT_LIST verb %x[%i]:%x\n",
523 nid, i, parm);
524 return 0;
525 }
526 parm >>= shift;
527 if (range_val) {
528 /* ranges between the previous and this one */
529 if (!prev_nid || prev_nid >= val) {
530 dev_warn(&codec->dev,
531 "invalid dep_range_val %x:%x\n",
532 prev_nid, val);
533 continue;
534 }
535 for (n = prev_nid + 1; n <= val; n++) {
536 if (conn_list) {
537 if (conns >= max_conns)
538 return -ENOSPC;
539 conn_list[conns] = n;
540 }
541 conns++;
542 }
543 } else {
544 if (conn_list) {
545 if (conns >= max_conns)
546 return -ENOSPC;
547 conn_list[conns] = val;
548 }
549 conns++;
550 }
551 prev_nid = val;
552 }
553 return conns;
554}
555EXPORT_SYMBOL_GPL(snd_hdac_get_connections);
556
557#ifdef CONFIG_PM
558/**
559 * snd_hdac_power_up - power up the codec
560 * @codec: the codec object
561 *
562 * This function calls the runtime PM helper to power up the given codec.
563 * Unlike snd_hdac_power_up_pm(), you should call this only for the code
564 * path that isn't included in PM path. Otherwise it gets stuck.
565 *
566 * Returns zero if successful, or a negative error code.
567 */
568int snd_hdac_power_up(struct hdac_device *codec)
569{
570 return pm_runtime_get_sync(&codec->dev);
571}
572EXPORT_SYMBOL_GPL(snd_hdac_power_up);
573
574/**
575 * snd_hdac_power_down - power down the codec
576 * @codec: the codec object
577 *
578 * Returns zero if successful, or a negative error code.
579 */
580int snd_hdac_power_down(struct hdac_device *codec)
581{
582 struct device *dev = &codec->dev;
583
584 pm_runtime_mark_last_busy(dev);
585 return pm_runtime_put_autosuspend(dev);
586}
587EXPORT_SYMBOL_GPL(snd_hdac_power_down);
588
589/**
590 * snd_hdac_power_up_pm - power up the codec
591 * @codec: the codec object
592 *
593 * This function can be called in a recursive code path like init code
594 * which may be called by PM suspend/resume again. OTOH, if a power-up
595 * call must wake up the sleeper (e.g. in a kctl callback), use
596 * snd_hdac_power_up() instead.
597 *
598 * Returns zero if successful, or a negative error code.
599 */
600int snd_hdac_power_up_pm(struct hdac_device *codec)
601{
602 if (!atomic_inc_not_zero(&codec->in_pm))
603 return snd_hdac_power_up(codec);
604 return 0;
605}
606EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
607
608/* like snd_hdac_power_up_pm(), but only increment the pm count when
609 * already powered up. Returns -1 if not powered up, 1 if incremented
610 * or 0 if unchanged. Only used in hdac_regmap.c
611 */
612int snd_hdac_keep_power_up(struct hdac_device *codec)
613{
614 if (!atomic_inc_not_zero(&codec->in_pm)) {
615 int ret = pm_runtime_get_if_active(&codec->dev, true);
616 if (!ret)
617 return -1;
618 if (ret < 0)
619 return 0;
620 }
621 return 1;
622}
623
624/**
625 * snd_hdac_power_down_pm - power down the codec
626 * @codec: the codec object
627 *
628 * Like snd_hdac_power_up_pm(), this function is used in a recursive
629 * code path like init code which may be called by PM suspend/resume again.
630 *
631 * Returns zero if successful, or a negative error code.
632 */
633int snd_hdac_power_down_pm(struct hdac_device *codec)
634{
635 if (atomic_dec_if_positive(&codec->in_pm) < 0)
636 return snd_hdac_power_down(codec);
637 return 0;
638}
639EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
640#endif
641
642/* codec vendor labels */
643struct hda_vendor_id {
644 unsigned int id;
645 const char *name;
646};
647
648static const struct hda_vendor_id hda_vendor_ids[] = {
649 { 0x0014, "Loongson" },
650 { 0x1002, "ATI" },
651 { 0x1013, "Cirrus Logic" },
652 { 0x1057, "Motorola" },
653 { 0x1095, "Silicon Image" },
654 { 0x10de, "Nvidia" },
655 { 0x10ec, "Realtek" },
656 { 0x1102, "Creative" },
657 { 0x1106, "VIA" },
658 { 0x111d, "IDT" },
659 { 0x11c1, "LSI" },
660 { 0x11d4, "Analog Devices" },
661 { 0x13f6, "C-Media" },
662 { 0x14f1, "Conexant" },
663 { 0x17e8, "Chrontel" },
664 { 0x1854, "LG" },
665 { 0x19e5, "Huawei" },
666 { 0x1aec, "Wolfson Microelectronics" },
667 { 0x1af4, "QEMU" },
668 { 0x434d, "C-Media" },
669 { 0x8086, "Intel" },
670 { 0x8384, "SigmaTel" },
671 {} /* terminator */
672};
673
674/* store the codec vendor name */
675static int get_codec_vendor_name(struct hdac_device *codec)
676{
677 const struct hda_vendor_id *c;
678 u16 vendor_id = codec->vendor_id >> 16;
679
680 for (c = hda_vendor_ids; c->id; c++) {
681 if (c->id == vendor_id) {
682 codec->vendor_name = kstrdup(c->name, GFP_KERNEL);
683 return codec->vendor_name ? 0 : -ENOMEM;
684 }
685 }
686
687 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id);
688 return codec->vendor_name ? 0 : -ENOMEM;
689}
690
691/*
692 * stream formats
693 */
694struct hda_rate_tbl {
695 unsigned int hz;
696 unsigned int alsa_bits;
697 unsigned int hda_fmt;
698};
699
700/* rate = base * mult / div */
701#define HDA_RATE(base, mult, div) \
702 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \
703 (((div) - 1) << AC_FMT_DIV_SHIFT))
704
705static const struct hda_rate_tbl rate_bits[] = {
706 /* rate in Hz, ALSA rate bitmask, HDA format value */
707
708 /* autodetected value used in snd_hda_query_supported_pcm */
709 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) },
710 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) },
711 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) },
712 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) },
713 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) },
714 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) },
715 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) },
716 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) },
717 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) },
718 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) },
719 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) },
720#define AC_PAR_PCM_RATE_BITS 11
721 /* up to bits 10, 384kHZ isn't supported properly */
722
723 /* not autodetected value */
724 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) },
725
726 { 0 } /* terminator */
727};
728
729static snd_pcm_format_t snd_hdac_format_normalize(snd_pcm_format_t format)
730{
731 switch (format) {
732 case SNDRV_PCM_FORMAT_S20_LE:
733 case SNDRV_PCM_FORMAT_S24_LE:
734 return SNDRV_PCM_FORMAT_S32_LE;
735
736 case SNDRV_PCM_FORMAT_U20_LE:
737 case SNDRV_PCM_FORMAT_U24_LE:
738 return SNDRV_PCM_FORMAT_U32_LE;
739
740 case SNDRV_PCM_FORMAT_S20_BE:
741 case SNDRV_PCM_FORMAT_S24_BE:
742 return SNDRV_PCM_FORMAT_S32_BE;
743
744 case SNDRV_PCM_FORMAT_U20_BE:
745 case SNDRV_PCM_FORMAT_U24_BE:
746 return SNDRV_PCM_FORMAT_U32_BE;
747
748 default:
749 return format;
750 }
751}
752
753/**
754 * snd_hdac_stream_format_bits - obtain bits per sample value.
755 * @format: the PCM format.
756 * @subformat: the PCM subformat.
757 * @maxbits: the maximum bits per sample.
758 *
759 * Return: The number of bits per sample.
760 */
761unsigned int snd_hdac_stream_format_bits(snd_pcm_format_t format, snd_pcm_subformat_t subformat,
762 unsigned int maxbits)
763{
764 struct snd_pcm_hw_params params;
765 unsigned int bits;
766
767 memset(¶ms, 0, sizeof(params));
768
769 params_set_format(¶ms, snd_hdac_format_normalize(format));
770 snd_mask_set(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_SUBFORMAT),
771 (__force unsigned int)subformat);
772
773 bits = snd_pcm_hw_params_bits(¶ms);
774 if (maxbits)
775 return min(bits, maxbits);
776 return bits;
777}
778EXPORT_SYMBOL_GPL(snd_hdac_stream_format_bits);
779
780/**
781 * snd_hdac_stream_format - convert format parameters to SDxFMT value.
782 * @channels: the number of channels.
783 * @bits: bits per sample.
784 * @rate: the sample rate.
785 *
786 * Return: The format bitset or zero if invalid.
787 */
788unsigned int snd_hdac_stream_format(unsigned int channels, unsigned int bits, unsigned int rate)
789{
790 unsigned int val = 0;
791 int i;
792
793 for (i = 0; rate_bits[i].hz; i++) {
794 if (rate_bits[i].hz == rate) {
795 val = rate_bits[i].hda_fmt;
796 break;
797 }
798 }
799
800 if (!rate_bits[i].hz)
801 return 0;
802
803 if (channels == 0 || channels > 8)
804 return 0;
805 val |= channels - 1;
806
807 switch (bits) {
808 case 8:
809 val |= AC_FMT_BITS_8;
810 break;
811 case 16:
812 val |= AC_FMT_BITS_16;
813 break;
814 case 20:
815 val |= AC_FMT_BITS_20;
816 break;
817 case 24:
818 val |= AC_FMT_BITS_24;
819 break;
820 case 32:
821 val |= AC_FMT_BITS_32;
822 break;
823 default:
824 return 0;
825 }
826
827 return val;
828}
829EXPORT_SYMBOL_GPL(snd_hdac_stream_format);
830
831/**
832 * snd_hdac_spdif_stream_format - convert format parameters to SDxFMT value.
833 * @channels: the number of channels.
834 * @bits: bits per sample.
835 * @rate: the sample rate.
836 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant).
837 *
838 * Return: The format bitset or zero if invalid.
839 */
840unsigned int snd_hdac_spdif_stream_format(unsigned int channels, unsigned int bits,
841 unsigned int rate, unsigned short spdif_ctls)
842{
843 unsigned int val = snd_hdac_stream_format(channels, bits, rate);
844
845 if (val && spdif_ctls & AC_DIG1_NONAUDIO)
846 val |= AC_FMT_TYPE_NON_PCM;
847
848 return val;
849}
850EXPORT_SYMBOL_GPL(snd_hdac_spdif_stream_format);
851
852static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid)
853{
854 unsigned int val = 0;
855
856 if (nid != codec->afg &&
857 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD))
858 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM);
859 if (!val || val == -1)
860 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM);
861 if (!val || val == -1)
862 return 0;
863 return val;
864}
865
866static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid)
867{
868 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM);
869
870 if (!streams || streams == -1)
871 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM);
872 if (!streams || streams == -1)
873 return 0;
874 return streams;
875}
876
877/**
878 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats
879 * @codec: the codec object
880 * @nid: NID to query
881 * @ratesp: the pointer to store the detected rate bitflags
882 * @formatsp: the pointer to store the detected formats
883 * @subformatsp: the pointer to store the detected subformats for S32_LE format
884 * @bpsp: the pointer to store the detected format widths
885 *
886 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp,
887 * @subformatsp or @bpsp argument is ignored.
888 *
889 * Returns 0 if successful, otherwise a negative error code.
890 */
891int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
892 u32 *ratesp, u64 *formatsp, u32 *subformatsp,
893 unsigned int *bpsp)
894{
895 unsigned int i, val, wcaps;
896
897 wcaps = get_wcaps(codec, nid);
898 val = query_pcm_param(codec, nid);
899
900 if (ratesp) {
901 u32 rates = 0;
902 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
903 if (val & (1 << i))
904 rates |= rate_bits[i].alsa_bits;
905 }
906 if (rates == 0) {
907 dev_err(&codec->dev,
908 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n",
909 nid, val,
910 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0);
911 return -EIO;
912 }
913 *ratesp = rates;
914 }
915
916 if (formatsp || subformatsp || bpsp) {
917 unsigned int streams, bps;
918 u32 subformats = 0;
919 u64 formats = 0;
920
921 streams = query_stream_param(codec, nid);
922 if (!streams)
923 return -EIO;
924
925 bps = 0;
926 if (streams & AC_SUPFMT_PCM) {
927 if (val & AC_SUPPCM_BITS_8) {
928 formats |= SNDRV_PCM_FMTBIT_U8;
929 bps = 8;
930 }
931 if (val & AC_SUPPCM_BITS_16) {
932 formats |= SNDRV_PCM_FMTBIT_S16_LE;
933 bps = 16;
934 }
935 if (val & AC_SUPPCM_BITS_20) {
936 formats |= SNDRV_PCM_FMTBIT_S32_LE;
937 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_20;
938 bps = 20;
939 }
940 if (val & AC_SUPPCM_BITS_24) {
941 formats |= SNDRV_PCM_FMTBIT_S32_LE;
942 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_24;
943 bps = 24;
944 }
945 if (val & AC_SUPPCM_BITS_32) {
946 if (wcaps & AC_WCAP_DIGITAL) {
947 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
948 } else {
949 formats |= SNDRV_PCM_FMTBIT_S32_LE;
950 subformats |= SNDRV_PCM_SUBFMTBIT_MSBITS_MAX;
951 bps = 32;
952 }
953 }
954 }
955#if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */
956 if (streams & AC_SUPFMT_FLOAT32) {
957 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
958 if (!bps)
959 bps = 32;
960 }
961#endif
962 if (streams == AC_SUPFMT_AC3) {
963 /* should be exclusive */
964 /* temporary hack: we have still no proper support
965 * for the direct AC3 stream...
966 */
967 formats |= SNDRV_PCM_FMTBIT_U8;
968 bps = 8;
969 }
970 if (formats == 0) {
971 dev_err(&codec->dev,
972 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n",
973 nid, val,
974 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0,
975 streams);
976 return -EIO;
977 }
978 if (formatsp)
979 *formatsp = formats;
980 if (subformatsp)
981 *subformatsp = subformats;
982 if (bpsp)
983 *bpsp = bps;
984 }
985
986 return 0;
987}
988EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm);
989
990/**
991 * snd_hdac_is_supported_format - Check the validity of the format
992 * @codec: the codec object
993 * @nid: NID to check
994 * @format: the HD-audio format value to check
995 *
996 * Check whether the given node supports the format value.
997 *
998 * Returns true if supported, false if not.
999 */
1000bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
1001 unsigned int format)
1002{
1003 int i;
1004 unsigned int val = 0, rate, stream;
1005
1006 val = query_pcm_param(codec, nid);
1007 if (!val)
1008 return false;
1009
1010 rate = format & 0xff00;
1011 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
1012 if (rate_bits[i].hda_fmt == rate) {
1013 if (val & (1 << i))
1014 break;
1015 return false;
1016 }
1017 if (i >= AC_PAR_PCM_RATE_BITS)
1018 return false;
1019
1020 stream = query_stream_param(codec, nid);
1021 if (!stream)
1022 return false;
1023
1024 if (stream & AC_SUPFMT_PCM) {
1025 switch (format & 0xf0) {
1026 case 0x00:
1027 if (!(val & AC_SUPPCM_BITS_8))
1028 return false;
1029 break;
1030 case 0x10:
1031 if (!(val & AC_SUPPCM_BITS_16))
1032 return false;
1033 break;
1034 case 0x20:
1035 if (!(val & AC_SUPPCM_BITS_20))
1036 return false;
1037 break;
1038 case 0x30:
1039 if (!(val & AC_SUPPCM_BITS_24))
1040 return false;
1041 break;
1042 case 0x40:
1043 if (!(val & AC_SUPPCM_BITS_32))
1044 return false;
1045 break;
1046 default:
1047 return false;
1048 }
1049 } else {
1050 /* FIXME: check for float32 and AC3? */
1051 }
1052
1053 return true;
1054}
1055EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format);
1056
1057static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid,
1058 int flags, unsigned int verb, unsigned int parm)
1059{
1060 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
1061 unsigned int res;
1062
1063 if (snd_hdac_exec_verb(hdac, cmd, flags, &res))
1064 return -1;
1065
1066 return res;
1067}
1068
1069static int codec_write(struct hdac_device *hdac, hda_nid_t nid,
1070 int flags, unsigned int verb, unsigned int parm)
1071{
1072 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
1073
1074 return snd_hdac_exec_verb(hdac, cmd, flags, NULL);
1075}
1076
1077/**
1078 * snd_hdac_codec_read - send a command and get the response
1079 * @hdac: the HDAC device
1080 * @nid: NID to send the command
1081 * @flags: optional bit flags
1082 * @verb: the verb to send
1083 * @parm: the parameter for the verb
1084 *
1085 * Send a single command and read the corresponding response.
1086 *
1087 * Returns the obtained response value, or -1 for an error.
1088 */
1089int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
1090 int flags, unsigned int verb, unsigned int parm)
1091{
1092 return codec_read(hdac, nid, flags, verb, parm);
1093}
1094EXPORT_SYMBOL_GPL(snd_hdac_codec_read);
1095
1096/**
1097 * snd_hdac_codec_write - send a single command without waiting for response
1098 * @hdac: the HDAC device
1099 * @nid: NID to send the command
1100 * @flags: optional bit flags
1101 * @verb: the verb to send
1102 * @parm: the parameter for the verb
1103 *
1104 * Send a single command without waiting for response.
1105 *
1106 * Returns 0 if successful, or a negative error code.
1107 */
1108int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
1109 int flags, unsigned int verb, unsigned int parm)
1110{
1111 return codec_write(hdac, nid, flags, verb, parm);
1112}
1113EXPORT_SYMBOL_GPL(snd_hdac_codec_write);
1114
1115/**
1116 * snd_hdac_check_power_state - check whether the actual power state matches
1117 * with the target state
1118 *
1119 * @hdac: the HDAC device
1120 * @nid: NID to send the command
1121 * @target_state: target state to check for
1122 *
1123 * Return true if state matches, false if not
1124 */
1125bool snd_hdac_check_power_state(struct hdac_device *hdac,
1126 hda_nid_t nid, unsigned int target_state)
1127{
1128 unsigned int state = codec_read(hdac, nid, 0,
1129 AC_VERB_GET_POWER_STATE, 0);
1130
1131 if (state & AC_PWRST_ERROR)
1132 return true;
1133 state = (state >> 4) & 0x0f;
1134 return (state == target_state);
1135}
1136EXPORT_SYMBOL_GPL(snd_hdac_check_power_state);
1137/**
1138 * snd_hdac_sync_power_state - wait until actual power state matches
1139 * with the target state
1140 *
1141 * @codec: the HDAC device
1142 * @nid: NID to send the command
1143 * @power_state: target power state to wait for
1144 *
1145 * Return power state or PS_ERROR if codec rejects GET verb.
1146 */
1147unsigned int snd_hdac_sync_power_state(struct hdac_device *codec,
1148 hda_nid_t nid, unsigned int power_state)
1149{
1150 unsigned long end_time = jiffies + msecs_to_jiffies(500);
1151 unsigned int state, actual_state, count;
1152
1153 for (count = 0; count < 500; count++) {
1154 state = snd_hdac_codec_read(codec, nid, 0,
1155 AC_VERB_GET_POWER_STATE, 0);
1156 if (state & AC_PWRST_ERROR) {
1157 msleep(20);
1158 break;
1159 }
1160 actual_state = (state >> 4) & 0x0f;
1161 if (actual_state == power_state)
1162 break;
1163 if (time_after_eq(jiffies, end_time))
1164 break;
1165 /* wait until the codec reachs to the target state */
1166 msleep(1);
1167 }
1168 return state;
1169}
1170EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state);