1 // SPDX-License-Identifier: GPL-2.0-only
3 * HD-audio codec core device
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>
18 static void setup_fg_nodes(struct hdac_device *codec);
19 static int get_codec_vendor_name(struct hdac_device *codec);
21 static void default_release(struct device *dev)
23 snd_hdac_device_exit(container_of(dev, struct hdac_device, dev));
27 * snd_hdac_device_init - initialize the HD-audio codec base device
28 * @codec: device to initialize
30 * @name: device name string
31 * @addr: codec address
33 * Returns zero for success or a negative error code.
35 * This function increments the runtime PM counter and marks it active.
36 * The caller needs to turn it off appropriately later.
38 * The caller needs to set the device's release op properly by itself.
40 int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus,
41 const char *name, unsigned int addr)
48 device_initialize(dev);
49 dev->parent = bus->dev;
50 dev->bus = &snd_hda_bus_type;
51 dev->release = default_release;
52 dev->groups = hdac_dev_attr_groups;
53 dev_set_name(dev, "%s", name);
54 device_enable_async_suspend(dev);
58 codec->type = HDA_DEV_CORE;
59 mutex_init(&codec->widget_lock);
60 mutex_init(&codec->regmap_lock);
61 pm_runtime_set_active(&codec->dev);
62 pm_runtime_get_noresume(&codec->dev);
63 atomic_set(&codec->in_pm, 0);
65 err = snd_hdac_bus_add_device(bus, codec);
70 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
72 if (codec->vendor_id == -1) {
73 /* read again, hopefully the access method was corrected
76 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
80 codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
82 codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
85 setup_fg_nodes(codec);
86 if (!codec->afg && !codec->mfg) {
87 dev_err(dev, "no AFG or MFG node found\n");
92 fg = codec->afg ? codec->afg : codec->mfg;
94 err = snd_hdac_refresh_widgets(codec);
98 codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE);
99 /* reread ssid if not set by parameter */
100 if (codec->subsystem_id == -1 || codec->subsystem_id == 0)
101 snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0,
102 &codec->subsystem_id);
104 err = get_codec_vendor_name(codec);
108 codec->chip_name = kasprintf(GFP_KERNEL, "ID %x",
109 codec->vendor_id & 0xffff);
110 if (!codec->chip_name) {
118 put_device(&codec->dev);
121 EXPORT_SYMBOL_GPL(snd_hdac_device_init);
124 * snd_hdac_device_exit - clean up the HD-audio codec base device
125 * @codec: device to clean up
127 void snd_hdac_device_exit(struct hdac_device *codec)
129 pm_runtime_put_noidle(&codec->dev);
130 snd_hdac_bus_remove_device(codec->bus, codec);
131 kfree(codec->vendor_name);
132 kfree(codec->chip_name);
134 EXPORT_SYMBOL_GPL(snd_hdac_device_exit);
137 * snd_hdac_device_register - register the hd-audio codec base device
138 * @codec: the device to register
140 int snd_hdac_device_register(struct hdac_device *codec)
144 err = device_add(&codec->dev);
147 mutex_lock(&codec->widget_lock);
148 err = hda_widget_sysfs_init(codec);
149 mutex_unlock(&codec->widget_lock);
151 device_del(&codec->dev);
157 EXPORT_SYMBOL_GPL(snd_hdac_device_register);
160 * snd_hdac_device_unregister - unregister the hd-audio codec base device
161 * @codec: the device to unregister
163 void snd_hdac_device_unregister(struct hdac_device *codec)
165 if (device_is_registered(&codec->dev)) {
166 mutex_lock(&codec->widget_lock);
167 hda_widget_sysfs_exit(codec);
168 mutex_unlock(&codec->widget_lock);
169 device_del(&codec->dev);
170 snd_hdac_bus_remove_device(codec->bus, codec);
173 EXPORT_SYMBOL_GPL(snd_hdac_device_unregister);
176 * snd_hdac_device_set_chip_name - set/update the codec name
177 * @codec: the HDAC device
178 * @name: name string to set
180 * Returns 0 if the name is set or updated, or a negative error code.
182 int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name)
188 newname = kstrdup(name, GFP_KERNEL);
191 kfree(codec->chip_name);
192 codec->chip_name = newname;
195 EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);
198 * snd_hdac_codec_modalias - give the module alias name
199 * @codec: HDAC device
200 * @buf: string buffer to store
201 * @size: string buffer size
203 * Returns the size of string, like snprintf(), or a negative error code.
205 int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size)
207 return scnprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n",
208 codec->vendor_id, codec->revision_id, codec->type);
210 EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias);
213 * snd_hdac_make_cmd - compose a 32bit command word to be sent to the
214 * HD-audio controller
215 * @codec: the codec object
216 * @nid: NID to encode
217 * @verb: verb to encode
218 * @parm: parameter to encode
220 * Return an encoded command verb or -1 for error.
222 static unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
223 unsigned int verb, unsigned int parm)
228 if ((addr & ~0xf) || (nid & ~0x7f) ||
229 (verb & ~0xfff) || (parm & ~0xffff)) {
230 dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n",
231 addr, nid, verb, parm);
236 val |= (u32)nid << 20;
243 * snd_hdac_exec_verb - execute an encoded verb
244 * @codec: the codec object
245 * @cmd: encoded verb to execute
246 * @flags: optional flags, pass zero for default
247 * @res: the pointer to store the result, NULL if running async
249 * Returns zero if successful, or a negative error code.
251 * This calls the exec_verb op when set in hdac_codec. If not,
252 * call the default snd_hdac_bus_exec_verb().
254 int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
255 unsigned int flags, unsigned int *res)
257 if (codec->exec_verb)
258 return codec->exec_verb(codec, cmd, flags, res);
259 return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res);
264 * snd_hdac_read - execute a verb
265 * @codec: the codec object
266 * @nid: NID to execute a verb
267 * @verb: verb to execute
268 * @parm: parameter for a verb
269 * @res: the pointer to store the result, NULL if running async
271 * Returns zero if successful, or a negative error code.
273 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
274 unsigned int verb, unsigned int parm, unsigned int *res)
276 unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm);
278 return snd_hdac_exec_verb(codec, cmd, 0, res);
280 EXPORT_SYMBOL_GPL(snd_hdac_read);
283 * _snd_hdac_read_parm - read a parmeter
284 * @codec: the codec object
285 * @nid: NID to read a parameter
286 * @parm: parameter to read
287 * @res: pointer to store the read value
289 * This function returns zero or an error unlike snd_hdac_read_parm().
291 int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
296 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
297 return snd_hdac_regmap_read_raw(codec, cmd, res);
299 EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
302 * snd_hdac_read_parm_uncached - read a codec parameter without caching
303 * @codec: the codec object
304 * @nid: NID to read a parameter
305 * @parm: parameter to read
307 * Returns -1 for error. If you need to distinguish the error more
308 * strictly, use snd_hdac_read() directly.
310 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
313 unsigned int cmd, val;
315 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
316 if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0)
320 EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
323 * snd_hdac_override_parm - override read-only parameters
324 * @codec: the codec object
325 * @nid: NID for the parameter
326 * @parm: the parameter to change
327 * @val: the parameter value to overwrite
329 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
330 unsigned int parm, unsigned int val)
332 unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm;
338 codec->caps_overwriting = true;
339 err = snd_hdac_regmap_write_raw(codec, verb, val);
340 codec->caps_overwriting = false;
343 EXPORT_SYMBOL_GPL(snd_hdac_override_parm);
346 * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes
347 * @codec: the codec object
348 * @nid: NID to inspect
349 * @start_id: the pointer to store the starting NID
351 * Returns the number of subtree nodes or zero if not found.
352 * This function reads parameters always without caching.
354 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
359 parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT);
364 *start_id = (parm >> 16) & 0x7fff;
365 return (int)(parm & 0x7fff);
367 EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes);
370 * look for an AFG and MFG nodes
372 static void setup_fg_nodes(struct hdac_device *codec)
374 int i, total_nodes, function_id;
377 total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
378 for (i = 0; i < total_nodes; i++, nid++) {
379 function_id = snd_hdac_read_parm(codec, nid,
380 AC_PAR_FUNCTION_TYPE);
381 switch (function_id & 0xff) {
382 case AC_GRP_AUDIO_FUNCTION:
384 codec->afg_function_id = function_id & 0xff;
385 codec->afg_unsol = (function_id >> 8) & 1;
387 case AC_GRP_MODEM_FUNCTION:
389 codec->mfg_function_id = function_id & 0xff;
390 codec->mfg_unsol = (function_id >> 8) & 1;
399 * snd_hdac_refresh_widgets - Reset the widget start/end nodes
400 * @codec: the codec object
402 int snd_hdac_refresh_widgets(struct hdac_device *codec)
408 * Serialize against multiple threads trying to update the sysfs
411 mutex_lock(&codec->widget_lock);
412 nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid);
413 if (!start_nid || nums <= 0 || nums >= 0xff) {
414 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n",
420 err = hda_widget_sysfs_reinit(codec, start_nid, nums);
424 codec->num_nodes = nums;
425 codec->start_nid = start_nid;
426 codec->end_nid = start_nid + nums;
428 mutex_unlock(&codec->widget_lock);
431 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets);
433 /* return CONNLIST_LEN parameter of the given widget */
434 static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid)
436 unsigned int wcaps = get_wcaps(codec, nid);
439 if (!(wcaps & AC_WCAP_CONN_LIST) &&
440 get_wcaps_type(wcaps) != AC_WID_VOL_KNB)
443 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN);
450 * snd_hdac_get_connections - get a widget connection list
451 * @codec: the codec object
453 * @conn_list: the array to store the results, can be NULL
454 * @max_conns: the max size of the given array
456 * Returns the number of connected widgets, zero for no connection, or a
457 * negative error code. When the number of elements don't fit with the
458 * given array size, it returns -ENOSPC.
460 * When @conn_list is NULL, it just checks the number of connections.
462 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
463 hda_nid_t *conn_list, int max_conns)
466 int i, conn_len, conns, err;
467 unsigned int shift, num_elems, mask;
471 parm = get_num_conns(codec, nid);
475 if (parm & AC_CLIST_LONG) {
484 conn_len = parm & AC_CLIST_LENGTH;
485 mask = (1 << (shift-1)) - 1;
488 return 0; /* no connection */
491 /* single connection */
492 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0,
497 conn_list[0] = parm & mask;
501 /* multi connection */
504 for (i = 0; i < conn_len; i++) {
508 if (i % num_elems == 0) {
509 err = snd_hdac_read(codec, nid,
510 AC_VERB_GET_CONNECT_LIST, i,
515 range_val = !!(parm & (1 << (shift-1))); /* ranges */
517 if (val == 0 && null_count++) { /* no second chance */
519 "invalid CONNECT_LIST verb %x[%i]:%x\n",
525 /* ranges between the previous and this one */
526 if (!prev_nid || prev_nid >= val) {
527 dev_warn(&codec->dev,
528 "invalid dep_range_val %x:%x\n",
532 for (n = prev_nid + 1; n <= val; n++) {
534 if (conns >= max_conns)
536 conn_list[conns] = n;
542 if (conns >= max_conns)
544 conn_list[conns] = val;
552 EXPORT_SYMBOL_GPL(snd_hdac_get_connections);
556 * snd_hdac_power_up - power up the codec
557 * @codec: the codec object
559 * This function calls the runtime PM helper to power up the given codec.
560 * Unlike snd_hdac_power_up_pm(), you should call this only for the code
561 * path that isn't included in PM path. Otherwise it gets stuck.
563 * Returns zero if successful, or a negative error code.
565 int snd_hdac_power_up(struct hdac_device *codec)
567 return pm_runtime_get_sync(&codec->dev);
569 EXPORT_SYMBOL_GPL(snd_hdac_power_up);
572 * snd_hdac_power_down - power down the codec
573 * @codec: the codec object
575 * Returns zero if successful, or a negative error code.
577 int snd_hdac_power_down(struct hdac_device *codec)
579 struct device *dev = &codec->dev;
581 pm_runtime_mark_last_busy(dev);
582 return pm_runtime_put_autosuspend(dev);
584 EXPORT_SYMBOL_GPL(snd_hdac_power_down);
587 * snd_hdac_power_up_pm - power up the codec
588 * @codec: the codec object
590 * This function can be called in a recursive code path like init code
591 * which may be called by PM suspend/resume again. OTOH, if a power-up
592 * call must wake up the sleeper (e.g. in a kctl callback), use
593 * snd_hdac_power_up() instead.
595 * Returns zero if successful, or a negative error code.
597 int snd_hdac_power_up_pm(struct hdac_device *codec)
599 if (!atomic_inc_not_zero(&codec->in_pm))
600 return snd_hdac_power_up(codec);
603 EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
605 /* like snd_hdac_power_up_pm(), but only increment the pm count when
606 * already powered up. Returns -1 if not powered up, 1 if incremented
607 * or 0 if unchanged. Only used in hdac_regmap.c
609 int snd_hdac_keep_power_up(struct hdac_device *codec)
611 if (!atomic_inc_not_zero(&codec->in_pm)) {
612 int ret = pm_runtime_get_if_in_use(&codec->dev);
622 * snd_hdac_power_down_pm - power down the codec
623 * @codec: the codec object
625 * Like snd_hdac_power_up_pm(), this function is used in a recursive
626 * code path like init code which may be called by PM suspend/resume again.
628 * Returns zero if successful, or a negative error code.
630 int snd_hdac_power_down_pm(struct hdac_device *codec)
632 if (atomic_dec_if_positive(&codec->in_pm) < 0)
633 return snd_hdac_power_down(codec);
636 EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
639 /* codec vendor labels */
640 struct hda_vendor_id {
645 static const struct hda_vendor_id hda_vendor_ids[] = {
647 { 0x1013, "Cirrus Logic" },
648 { 0x1057, "Motorola" },
649 { 0x1095, "Silicon Image" },
650 { 0x10de, "Nvidia" },
651 { 0x10ec, "Realtek" },
652 { 0x1102, "Creative" },
656 { 0x11d4, "Analog Devices" },
657 { 0x13f6, "C-Media" },
658 { 0x14f1, "Conexant" },
659 { 0x17e8, "Chrontel" },
661 { 0x1aec, "Wolfson Microelectronics" },
663 { 0x434d, "C-Media" },
665 { 0x8384, "SigmaTel" },
669 /* store the codec vendor name */
670 static int get_codec_vendor_name(struct hdac_device *codec)
672 const struct hda_vendor_id *c;
673 u16 vendor_id = codec->vendor_id >> 16;
675 for (c = hda_vendor_ids; c->id; c++) {
676 if (c->id == vendor_id) {
677 codec->vendor_name = kstrdup(c->name, GFP_KERNEL);
678 return codec->vendor_name ? 0 : -ENOMEM;
682 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id);
683 return codec->vendor_name ? 0 : -ENOMEM;
689 struct hda_rate_tbl {
691 unsigned int alsa_bits;
692 unsigned int hda_fmt;
695 /* rate = base * mult / div */
696 #define HDA_RATE(base, mult, div) \
697 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \
698 (((div) - 1) << AC_FMT_DIV_SHIFT))
700 static const struct hda_rate_tbl rate_bits[] = {
701 /* rate in Hz, ALSA rate bitmask, HDA format value */
703 /* autodetected value used in snd_hda_query_supported_pcm */
704 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) },
705 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) },
706 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) },
707 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) },
708 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) },
709 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) },
710 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) },
711 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) },
712 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) },
713 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) },
714 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) },
715 #define AC_PAR_PCM_RATE_BITS 11
716 /* up to bits 10, 384kHZ isn't supported properly */
718 /* not autodetected value */
719 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) },
721 { 0 } /* terminator */
725 * snd_hdac_calc_stream_format - calculate the format bitset
726 * @rate: the sample rate
727 * @channels: the number of channels
728 * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
729 * @maxbps: the max. bps
730 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant)
732 * Calculate the format bitset from the given rate, channels and th PCM format.
734 * Return zero if invalid.
736 unsigned int snd_hdac_calc_stream_format(unsigned int rate,
737 unsigned int channels,
738 snd_pcm_format_t format,
740 unsigned short spdif_ctls)
743 unsigned int val = 0;
745 for (i = 0; rate_bits[i].hz; i++)
746 if (rate_bits[i].hz == rate) {
747 val = rate_bits[i].hda_fmt;
750 if (!rate_bits[i].hz)
753 if (channels == 0 || channels > 8)
757 switch (snd_pcm_format_width(format)) {
759 val |= AC_FMT_BITS_8;
762 val |= AC_FMT_BITS_16;
767 if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE)
768 val |= AC_FMT_BITS_32;
769 else if (maxbps >= 24)
770 val |= AC_FMT_BITS_24;
772 val |= AC_FMT_BITS_20;
778 if (spdif_ctls & AC_DIG1_NONAUDIO)
779 val |= AC_FMT_TYPE_NON_PCM;
783 EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format);
785 static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid)
787 unsigned int val = 0;
789 if (nid != codec->afg &&
790 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD))
791 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM);
792 if (!val || val == -1)
793 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM);
794 if (!val || val == -1)
799 static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid)
801 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM);
803 if (!streams || streams == -1)
804 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM);
805 if (!streams || streams == -1)
811 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats
812 * @codec: the codec object
814 * @ratesp: the pointer to store the detected rate bitflags
815 * @formatsp: the pointer to store the detected formats
816 * @bpsp: the pointer to store the detected format widths
818 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp
819 * or @bsps argument is ignored.
821 * Returns 0 if successful, otherwise a negative error code.
823 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
824 u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
826 unsigned int i, val, wcaps;
828 wcaps = get_wcaps(codec, nid);
829 val = query_pcm_param(codec, nid);
833 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
835 rates |= rate_bits[i].alsa_bits;
839 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n",
841 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0);
847 if (formatsp || bpsp) {
849 unsigned int streams, bps;
851 streams = query_stream_param(codec, nid);
856 if (streams & AC_SUPFMT_PCM) {
857 if (val & AC_SUPPCM_BITS_8) {
858 formats |= SNDRV_PCM_FMTBIT_U8;
861 if (val & AC_SUPPCM_BITS_16) {
862 formats |= SNDRV_PCM_FMTBIT_S16_LE;
865 if (wcaps & AC_WCAP_DIGITAL) {
866 if (val & AC_SUPPCM_BITS_32)
867 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
868 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
869 formats |= SNDRV_PCM_FMTBIT_S32_LE;
870 if (val & AC_SUPPCM_BITS_24)
872 else if (val & AC_SUPPCM_BITS_20)
874 } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
875 AC_SUPPCM_BITS_32)) {
876 formats |= SNDRV_PCM_FMTBIT_S32_LE;
877 if (val & AC_SUPPCM_BITS_32)
879 else if (val & AC_SUPPCM_BITS_24)
881 else if (val & AC_SUPPCM_BITS_20)
885 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */
886 if (streams & AC_SUPFMT_FLOAT32) {
887 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
892 if (streams == AC_SUPFMT_AC3) {
893 /* should be exclusive */
894 /* temporary hack: we have still no proper support
895 * for the direct AC3 stream...
897 formats |= SNDRV_PCM_FMTBIT_U8;
902 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n",
904 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0,
916 EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm);
919 * snd_hdac_is_supported_format - Check the validity of the format
920 * @codec: the codec object
922 * @format: the HD-audio format value to check
924 * Check whether the given node supports the format value.
926 * Returns true if supported, false if not.
928 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
932 unsigned int val = 0, rate, stream;
934 val = query_pcm_param(codec, nid);
938 rate = format & 0xff00;
939 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
940 if (rate_bits[i].hda_fmt == rate) {
945 if (i >= AC_PAR_PCM_RATE_BITS)
948 stream = query_stream_param(codec, nid);
952 if (stream & AC_SUPFMT_PCM) {
953 switch (format & 0xf0) {
955 if (!(val & AC_SUPPCM_BITS_8))
959 if (!(val & AC_SUPPCM_BITS_16))
963 if (!(val & AC_SUPPCM_BITS_20))
967 if (!(val & AC_SUPPCM_BITS_24))
971 if (!(val & AC_SUPPCM_BITS_32))
978 /* FIXME: check for float32 and AC3? */
983 EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format);
985 static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid,
986 int flags, unsigned int verb, unsigned int parm)
988 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
991 if (snd_hdac_exec_verb(hdac, cmd, flags, &res))
997 static int codec_write(struct hdac_device *hdac, hda_nid_t nid,
998 int flags, unsigned int verb, unsigned int parm)
1000 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
1002 return snd_hdac_exec_verb(hdac, cmd, flags, NULL);
1006 * snd_hdac_codec_read - send a command and get the response
1007 * @hdac: the HDAC device
1008 * @nid: NID to send the command
1009 * @flags: optional bit flags
1010 * @verb: the verb to send
1011 * @parm: the parameter for the verb
1013 * Send a single command and read the corresponding response.
1015 * Returns the obtained response value, or -1 for an error.
1017 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
1018 int flags, unsigned int verb, unsigned int parm)
1020 return codec_read(hdac, nid, flags, verb, parm);
1022 EXPORT_SYMBOL_GPL(snd_hdac_codec_read);
1025 * snd_hdac_codec_write - send a single command without waiting for response
1026 * @hdac: the HDAC device
1027 * @nid: NID to send the command
1028 * @flags: optional bit flags
1029 * @verb: the verb to send
1030 * @parm: the parameter for the verb
1032 * Send a single command without waiting for response.
1034 * Returns 0 if successful, or a negative error code.
1036 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
1037 int flags, unsigned int verb, unsigned int parm)
1039 return codec_write(hdac, nid, flags, verb, parm);
1041 EXPORT_SYMBOL_GPL(snd_hdac_codec_write);
1044 * snd_hdac_check_power_state - check whether the actual power state matches
1045 * with the target state
1047 * @hdac: the HDAC device
1048 * @nid: NID to send the command
1049 * @target_state: target state to check for
1051 * Return true if state matches, false if not
1053 bool snd_hdac_check_power_state(struct hdac_device *hdac,
1054 hda_nid_t nid, unsigned int target_state)
1056 unsigned int state = codec_read(hdac, nid, 0,
1057 AC_VERB_GET_POWER_STATE, 0);
1059 if (state & AC_PWRST_ERROR)
1061 state = (state >> 4) & 0x0f;
1062 return (state == target_state);
1064 EXPORT_SYMBOL_GPL(snd_hdac_check_power_state);
1066 * snd_hdac_sync_power_state - wait until actual power state matches
1067 * with the target state
1069 * @codec: the HDAC device
1070 * @nid: NID to send the command
1071 * @power_state: target power state to wait for
1073 * Return power state or PS_ERROR if codec rejects GET verb.
1075 unsigned int snd_hdac_sync_power_state(struct hdac_device *codec,
1076 hda_nid_t nid, unsigned int power_state)
1078 unsigned long end_time = jiffies + msecs_to_jiffies(500);
1079 unsigned int state, actual_state, count;
1081 for (count = 0; count < 500; count++) {
1082 state = snd_hdac_codec_read(codec, nid, 0,
1083 AC_VERB_GET_POWER_STATE, 0);
1084 if (state & AC_PWRST_ERROR) {
1088 actual_state = (state >> 4) & 0x0f;
1089 if (actual_state == power_state)
1091 if (time_after_eq(jiffies, end_time))
1093 /* wait until the codec reachs to the target state */
1098 EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state);