2 * HD-audio codec core device
5 #include <linux/init.h>
6 #include <linux/device.h>
7 #include <linux/slab.h>
8 #include <linux/module.h>
9 #include <linux/export.h>
10 #include <linux/pm_runtime.h>
11 #include <sound/hdaudio.h>
12 #include <sound/hda_regmap.h>
13 #include <sound/pcm.h>
16 static void setup_fg_nodes(struct hdac_device *codec);
17 static int get_codec_vendor_name(struct hdac_device *codec);
19 static void default_release(struct device *dev)
21 snd_hdac_device_exit(container_of(dev, struct hdac_device, dev));
25 * snd_hdac_device_init - initialize the HD-audio codec base device
26 * @codec: device to initialize
28 * @name: device name string
29 * @addr: codec address
31 * Returns zero for success or a negative error code.
33 * This function increments the runtime PM counter and marks it active.
34 * The caller needs to turn it off appropriately later.
36 * The caller needs to set the device's release op properly by itself.
38 int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus,
39 const char *name, unsigned int addr)
46 device_initialize(dev);
47 dev->parent = bus->dev;
48 dev->bus = &snd_hda_bus_type;
49 dev->release = default_release;
50 dev->groups = hdac_dev_attr_groups;
51 dev_set_name(dev, "%s", name);
52 device_enable_async_suspend(dev);
56 codec->type = HDA_DEV_CORE;
57 pm_runtime_set_active(&codec->dev);
58 pm_runtime_get_noresume(&codec->dev);
59 atomic_set(&codec->in_pm, 0);
61 err = snd_hdac_bus_add_device(bus, codec);
66 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
68 if (codec->vendor_id == -1) {
69 /* read again, hopefully the access method was corrected
72 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
76 codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
78 codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
81 setup_fg_nodes(codec);
82 if (!codec->afg && !codec->mfg) {
83 dev_err(dev, "no AFG or MFG node found\n");
88 fg = codec->afg ? codec->afg : codec->mfg;
90 err = snd_hdac_refresh_widgets(codec);
94 codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE);
95 /* reread ssid if not set by parameter */
96 if (codec->subsystem_id == -1 || codec->subsystem_id == 0)
97 snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0,
98 &codec->subsystem_id);
100 err = get_codec_vendor_name(codec);
104 codec->chip_name = kasprintf(GFP_KERNEL, "ID %x",
105 codec->vendor_id & 0xffff);
106 if (!codec->chip_name) {
114 put_device(&codec->dev);
117 EXPORT_SYMBOL_GPL(snd_hdac_device_init);
120 * snd_hdac_device_exit - clean up the HD-audio codec base device
121 * @codec: device to clean up
123 void snd_hdac_device_exit(struct hdac_device *codec)
125 pm_runtime_put_noidle(&codec->dev);
126 snd_hdac_bus_remove_device(codec->bus, codec);
127 kfree(codec->vendor_name);
128 kfree(codec->chip_name);
130 EXPORT_SYMBOL_GPL(snd_hdac_device_exit);
133 * snd_hdac_device_register - register the hd-audio codec base device
134 * codec: the device to register
136 int snd_hdac_device_register(struct hdac_device *codec)
140 err = device_add(&codec->dev);
143 err = hda_widget_sysfs_init(codec);
145 device_del(&codec->dev);
151 EXPORT_SYMBOL_GPL(snd_hdac_device_register);
154 * snd_hdac_device_unregister - unregister the hd-audio codec base device
155 * codec: the device to unregister
157 void snd_hdac_device_unregister(struct hdac_device *codec)
159 if (device_is_registered(&codec->dev)) {
160 hda_widget_sysfs_exit(codec);
161 device_del(&codec->dev);
164 EXPORT_SYMBOL_GPL(snd_hdac_device_unregister);
167 * snd_hdac_device_set_chip_name - set/update the codec name
168 * @codec: the HDAC device
169 * @name: name string to set
171 * Returns 0 if the name is set or updated, or a negative error code.
173 int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name)
179 newname = kstrdup(name, GFP_KERNEL);
182 kfree(codec->chip_name);
183 codec->chip_name = newname;
186 EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);
189 * snd_hdac_codec_modalias - give the module alias name
190 * @codec: HDAC device
191 * @buf: string buffer to store
192 * @size: string buffer size
194 * Returns the size of string, like snprintf(), or a negative error code.
196 int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size)
198 return snprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n",
199 codec->vendor_id, codec->revision_id, codec->type);
201 EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias);
204 * snd_hdac_make_cmd - compose a 32bit command word to be sent to the
205 * HD-audio controller
206 * @codec: the codec object
207 * @nid: NID to encode
208 * @verb: verb to encode
209 * @parm: parameter to encode
211 * Return an encoded command verb or -1 for error.
213 unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
214 unsigned int verb, unsigned int parm)
219 if ((addr & ~0xf) || (nid & ~0x7f) ||
220 (verb & ~0xfff) || (parm & ~0xffff)) {
221 dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n",
222 addr, nid, verb, parm);
227 val |= (u32)nid << 20;
232 EXPORT_SYMBOL_GPL(snd_hdac_make_cmd);
235 * snd_hdac_exec_verb - execute an encoded verb
236 * @codec: the codec object
237 * @cmd: encoded verb to execute
238 * @flags: optional flags, pass zero for default
239 * @res: the pointer to store the result, NULL if running async
241 * Returns zero if successful, or a negative error code.
243 * This calls the exec_verb op when set in hdac_codec. If not,
244 * call the default snd_hdac_bus_exec_verb().
246 int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
247 unsigned int flags, unsigned int *res)
249 if (codec->exec_verb)
250 return codec->exec_verb(codec, cmd, flags, res);
251 return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res);
253 EXPORT_SYMBOL_GPL(snd_hdac_exec_verb);
257 * snd_hdac_read - execute a verb
258 * @codec: the codec object
259 * @nid: NID to execute a verb
260 * @verb: verb to execute
261 * @parm: parameter for a verb
262 * @res: the pointer to store the result, NULL if running async
264 * Returns zero if successful, or a negative error code.
266 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
267 unsigned int verb, unsigned int parm, unsigned int *res)
269 unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm);
271 return snd_hdac_exec_verb(codec, cmd, 0, res);
273 EXPORT_SYMBOL_GPL(snd_hdac_read);
276 * _snd_hdac_read_parm - read a parmeter
278 * This function returns zero or an error unlike snd_hdac_read_parm().
280 int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
285 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
286 return snd_hdac_regmap_read_raw(codec, cmd, res);
288 EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
291 * snd_hdac_read_parm_uncached - read a codec parameter without caching
292 * @codec: the codec object
293 * @nid: NID to read a parameter
294 * @parm: parameter to read
296 * Returns -1 for error. If you need to distinguish the error more
297 * strictly, use snd_hdac_read() directly.
299 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
302 unsigned int cmd, val;
304 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
305 if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0)
309 EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
312 * snd_hdac_override_parm - override read-only parameters
313 * @codec: the codec object
314 * @nid: NID for the parameter
315 * @parm: the parameter to change
316 * @val: the parameter value to overwrite
318 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
319 unsigned int parm, unsigned int val)
321 unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm;
327 codec->caps_overwriting = true;
328 err = snd_hdac_regmap_write_raw(codec, verb, val);
329 codec->caps_overwriting = false;
332 EXPORT_SYMBOL_GPL(snd_hdac_override_parm);
335 * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes
336 * @codec: the codec object
337 * @nid: NID to inspect
338 * @start_id: the pointer to store the starting NID
340 * Returns the number of subtree nodes or zero if not found.
341 * This function reads parameters always without caching.
343 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
348 parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT);
353 *start_id = (parm >> 16) & 0x7fff;
354 return (int)(parm & 0x7fff);
356 EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes);
359 * look for an AFG and MFG nodes
361 static void setup_fg_nodes(struct hdac_device *codec)
363 int i, total_nodes, function_id;
366 total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
367 for (i = 0; i < total_nodes; i++, nid++) {
368 function_id = snd_hdac_read_parm(codec, nid,
369 AC_PAR_FUNCTION_TYPE);
370 switch (function_id & 0xff) {
371 case AC_GRP_AUDIO_FUNCTION:
373 codec->afg_function_id = function_id & 0xff;
374 codec->afg_unsol = (function_id >> 8) & 1;
376 case AC_GRP_MODEM_FUNCTION:
378 codec->mfg_function_id = function_id & 0xff;
379 codec->mfg_unsol = (function_id >> 8) & 1;
388 * snd_hdac_refresh_widgets - Reset the widget start/end nodes
389 * @codec: the codec object
391 int snd_hdac_refresh_widgets(struct hdac_device *codec)
396 nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid);
397 if (!start_nid || nums <= 0 || nums >= 0xff) {
398 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n",
403 codec->num_nodes = nums;
404 codec->start_nid = start_nid;
405 codec->end_nid = start_nid + nums;
408 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets);
411 * snd_hdac_refresh_widget_sysfs - Reset the codec widgets and reinit the
413 * @codec: the codec object
415 * first we need to remove sysfs, then refresh widgets and lastly
418 int snd_hdac_refresh_widget_sysfs(struct hdac_device *codec)
422 if (device_is_registered(&codec->dev))
423 hda_widget_sysfs_exit(codec);
424 ret = snd_hdac_refresh_widgets(codec);
426 dev_err(&codec->dev, "failed to refresh widget: %d\n", ret);
429 if (device_is_registered(&codec->dev)) {
430 ret = hda_widget_sysfs_init(codec);
432 dev_err(&codec->dev, "failed to init sysfs: %d\n", ret);
438 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widget_sysfs);
440 /* return CONNLIST_LEN parameter of the given widget */
441 static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid)
443 unsigned int wcaps = get_wcaps(codec, nid);
446 if (!(wcaps & AC_WCAP_CONN_LIST) &&
447 get_wcaps_type(wcaps) != AC_WID_VOL_KNB)
450 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN);
457 * snd_hdac_get_connections - get a widget connection list
458 * @codec: the codec object
460 * @conn_list: the array to store the results, can be NULL
461 * @max_conns: the max size of the given array
463 * Returns the number of connected widgets, zero for no connection, or a
464 * negative error code. When the number of elements don't fit with the
465 * given array size, it returns -ENOSPC.
467 * When @conn_list is NULL, it just checks the number of connections.
469 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
470 hda_nid_t *conn_list, int max_conns)
473 int i, conn_len, conns, err;
474 unsigned int shift, num_elems, mask;
478 parm = get_num_conns(codec, nid);
482 if (parm & AC_CLIST_LONG) {
491 conn_len = parm & AC_CLIST_LENGTH;
492 mask = (1 << (shift-1)) - 1;
495 return 0; /* no connection */
498 /* single connection */
499 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0,
504 conn_list[0] = parm & mask;
508 /* multi connection */
511 for (i = 0; i < conn_len; i++) {
515 if (i % num_elems == 0) {
516 err = snd_hdac_read(codec, nid,
517 AC_VERB_GET_CONNECT_LIST, i,
522 range_val = !!(parm & (1 << (shift-1))); /* ranges */
524 if (val == 0 && null_count++) { /* no second chance */
526 "invalid CONNECT_LIST verb %x[%i]:%x\n",
532 /* ranges between the previous and this one */
533 if (!prev_nid || prev_nid >= val) {
534 dev_warn(&codec->dev,
535 "invalid dep_range_val %x:%x\n",
539 for (n = prev_nid + 1; n <= val; n++) {
541 if (conns >= max_conns)
543 conn_list[conns] = n;
549 if (conns >= max_conns)
551 conn_list[conns] = val;
559 EXPORT_SYMBOL_GPL(snd_hdac_get_connections);
563 * snd_hdac_power_up - power up the codec
564 * @codec: the codec object
566 * This function calls the runtime PM helper to power up the given codec.
567 * Unlike snd_hdac_power_up_pm(), you should call this only for the code
568 * path that isn't included in PM path. Otherwise it gets stuck.
570 * Returns zero if successful, or a negative error code.
572 int snd_hdac_power_up(struct hdac_device *codec)
574 return pm_runtime_get_sync(&codec->dev);
576 EXPORT_SYMBOL_GPL(snd_hdac_power_up);
579 * snd_hdac_power_down - power down the codec
580 * @codec: the codec object
582 * Returns zero if successful, or a negative error code.
584 int snd_hdac_power_down(struct hdac_device *codec)
586 struct device *dev = &codec->dev;
588 pm_runtime_mark_last_busy(dev);
589 return pm_runtime_put_autosuspend(dev);
591 EXPORT_SYMBOL_GPL(snd_hdac_power_down);
594 * snd_hdac_power_up_pm - power up the codec
595 * @codec: the codec object
597 * This function can be called in a recursive code path like init code
598 * which may be called by PM suspend/resume again. OTOH, if a power-up
599 * call must wake up the sleeper (e.g. in a kctl callback), use
600 * snd_hdac_power_up() instead.
602 * Returns zero if successful, or a negative error code.
604 int snd_hdac_power_up_pm(struct hdac_device *codec)
606 if (!atomic_inc_not_zero(&codec->in_pm))
607 return snd_hdac_power_up(codec);
610 EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
612 /* like snd_hdac_power_up_pm(), but only increment the pm count when
613 * already powered up. Returns -1 if not powered up, 1 if incremented
614 * or 0 if unchanged. Only used in hdac_regmap.c
616 int snd_hdac_keep_power_up(struct hdac_device *codec)
618 if (!atomic_inc_not_zero(&codec->in_pm)) {
619 int ret = pm_runtime_get_if_in_use(&codec->dev);
629 * snd_hdac_power_down_pm - power down the codec
630 * @codec: the codec object
632 * Like snd_hdac_power_up_pm(), this function is used in a recursive
633 * code path like init code which may be called by PM suspend/resume again.
635 * Returns zero if successful, or a negative error code.
637 int snd_hdac_power_down_pm(struct hdac_device *codec)
639 if (atomic_dec_if_positive(&codec->in_pm) < 0)
640 return snd_hdac_power_down(codec);
643 EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
647 * snd_hdac_link_power - Enable/disable the link power for a codec
648 * @codec: the codec object
649 * @bool: enable or disable the link power
651 int snd_hdac_link_power(struct hdac_device *codec, bool enable)
653 if (!codec->link_power_control)
656 if (codec->bus->ops->link_power)
657 return codec->bus->ops->link_power(codec->bus, enable);
661 EXPORT_SYMBOL_GPL(snd_hdac_link_power);
663 /* codec vendor labels */
664 struct hda_vendor_id {
669 static struct hda_vendor_id hda_vendor_ids[] = {
671 { 0x1013, "Cirrus Logic" },
672 { 0x1057, "Motorola" },
673 { 0x1095, "Silicon Image" },
674 { 0x10de, "Nvidia" },
675 { 0x10ec, "Realtek" },
676 { 0x1102, "Creative" },
680 { 0x11d4, "Analog Devices" },
681 { 0x13f6, "C-Media" },
682 { 0x14f1, "Conexant" },
683 { 0x17e8, "Chrontel" },
685 { 0x1aec, "Wolfson Microelectronics" },
687 { 0x434d, "C-Media" },
689 { 0x8384, "SigmaTel" },
693 /* store the codec vendor name */
694 static int get_codec_vendor_name(struct hdac_device *codec)
696 const struct hda_vendor_id *c;
697 u16 vendor_id = codec->vendor_id >> 16;
699 for (c = hda_vendor_ids; c->id; c++) {
700 if (c->id == vendor_id) {
701 codec->vendor_name = kstrdup(c->name, GFP_KERNEL);
702 return codec->vendor_name ? 0 : -ENOMEM;
706 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id);
707 return codec->vendor_name ? 0 : -ENOMEM;
713 struct hda_rate_tbl {
715 unsigned int alsa_bits;
716 unsigned int hda_fmt;
719 /* rate = base * mult / div */
720 #define HDA_RATE(base, mult, div) \
721 (AC_FMT_BASE_##base##K | (((mult) - 1) << AC_FMT_MULT_SHIFT) | \
722 (((div) - 1) << AC_FMT_DIV_SHIFT))
724 static struct hda_rate_tbl rate_bits[] = {
725 /* rate in Hz, ALSA rate bitmask, HDA format value */
727 /* autodetected value used in snd_hda_query_supported_pcm */
728 { 8000, SNDRV_PCM_RATE_8000, HDA_RATE(48, 1, 6) },
729 { 11025, SNDRV_PCM_RATE_11025, HDA_RATE(44, 1, 4) },
730 { 16000, SNDRV_PCM_RATE_16000, HDA_RATE(48, 1, 3) },
731 { 22050, SNDRV_PCM_RATE_22050, HDA_RATE(44, 1, 2) },
732 { 32000, SNDRV_PCM_RATE_32000, HDA_RATE(48, 2, 3) },
733 { 44100, SNDRV_PCM_RATE_44100, HDA_RATE(44, 1, 1) },
734 { 48000, SNDRV_PCM_RATE_48000, HDA_RATE(48, 1, 1) },
735 { 88200, SNDRV_PCM_RATE_88200, HDA_RATE(44, 2, 1) },
736 { 96000, SNDRV_PCM_RATE_96000, HDA_RATE(48, 2, 1) },
737 { 176400, SNDRV_PCM_RATE_176400, HDA_RATE(44, 4, 1) },
738 { 192000, SNDRV_PCM_RATE_192000, HDA_RATE(48, 4, 1) },
739 #define AC_PAR_PCM_RATE_BITS 11
740 /* up to bits 10, 384kHZ isn't supported properly */
742 /* not autodetected value */
743 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) },
745 { 0 } /* terminator */
749 * snd_hdac_calc_stream_format - calculate the format bitset
750 * @rate: the sample rate
751 * @channels: the number of channels
752 * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
753 * @maxbps: the max. bps
754 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant)
756 * Calculate the format bitset from the given rate, channels and th PCM format.
758 * Return zero if invalid.
760 unsigned int snd_hdac_calc_stream_format(unsigned int rate,
761 unsigned int channels,
764 unsigned short spdif_ctls)
767 unsigned int val = 0;
769 for (i = 0; rate_bits[i].hz; i++)
770 if (rate_bits[i].hz == rate) {
771 val = rate_bits[i].hda_fmt;
774 if (!rate_bits[i].hz)
777 if (channels == 0 || channels > 8)
781 switch (snd_pcm_format_width(format)) {
783 val |= AC_FMT_BITS_8;
786 val |= AC_FMT_BITS_16;
791 if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE)
792 val |= AC_FMT_BITS_32;
793 else if (maxbps >= 24)
794 val |= AC_FMT_BITS_24;
796 val |= AC_FMT_BITS_20;
802 if (spdif_ctls & AC_DIG1_NONAUDIO)
803 val |= AC_FMT_TYPE_NON_PCM;
807 EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format);
809 static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid)
811 unsigned int val = 0;
813 if (nid != codec->afg &&
814 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD))
815 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM);
816 if (!val || val == -1)
817 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM);
818 if (!val || val == -1)
823 static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid)
825 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM);
827 if (!streams || streams == -1)
828 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM);
829 if (!streams || streams == -1)
835 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats
836 * @codec: the codec object
838 * @ratesp: the pointer to store the detected rate bitflags
839 * @formatsp: the pointer to store the detected formats
840 * @bpsp: the pointer to store the detected format widths
842 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp
843 * or @bsps argument is ignored.
845 * Returns 0 if successful, otherwise a negative error code.
847 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
848 u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
850 unsigned int i, val, wcaps;
852 wcaps = get_wcaps(codec, nid);
853 val = query_pcm_param(codec, nid);
857 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
859 rates |= rate_bits[i].alsa_bits;
863 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n",
865 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0);
871 if (formatsp || bpsp) {
873 unsigned int streams, bps;
875 streams = query_stream_param(codec, nid);
880 if (streams & AC_SUPFMT_PCM) {
881 if (val & AC_SUPPCM_BITS_8) {
882 formats |= SNDRV_PCM_FMTBIT_U8;
885 if (val & AC_SUPPCM_BITS_16) {
886 formats |= SNDRV_PCM_FMTBIT_S16_LE;
889 if (wcaps & AC_WCAP_DIGITAL) {
890 if (val & AC_SUPPCM_BITS_32)
891 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
892 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
893 formats |= SNDRV_PCM_FMTBIT_S32_LE;
894 if (val & AC_SUPPCM_BITS_24)
896 else if (val & AC_SUPPCM_BITS_20)
898 } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
899 AC_SUPPCM_BITS_32)) {
900 formats |= SNDRV_PCM_FMTBIT_S32_LE;
901 if (val & AC_SUPPCM_BITS_32)
903 else if (val & AC_SUPPCM_BITS_24)
905 else if (val & AC_SUPPCM_BITS_20)
909 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */
910 if (streams & AC_SUPFMT_FLOAT32) {
911 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
916 if (streams == AC_SUPFMT_AC3) {
917 /* should be exclusive */
918 /* temporary hack: we have still no proper support
919 * for the direct AC3 stream...
921 formats |= SNDRV_PCM_FMTBIT_U8;
926 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n",
928 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0,
940 EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm);
943 * snd_hdac_is_supported_format - Check the validity of the format
944 * @codec: the codec object
946 * @format: the HD-audio format value to check
948 * Check whether the given node supports the format value.
950 * Returns true if supported, false if not.
952 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
956 unsigned int val = 0, rate, stream;
958 val = query_pcm_param(codec, nid);
962 rate = format & 0xff00;
963 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
964 if (rate_bits[i].hda_fmt == rate) {
969 if (i >= AC_PAR_PCM_RATE_BITS)
972 stream = query_stream_param(codec, nid);
976 if (stream & AC_SUPFMT_PCM) {
977 switch (format & 0xf0) {
979 if (!(val & AC_SUPPCM_BITS_8))
983 if (!(val & AC_SUPPCM_BITS_16))
987 if (!(val & AC_SUPPCM_BITS_20))
991 if (!(val & AC_SUPPCM_BITS_24))
995 if (!(val & AC_SUPPCM_BITS_32))
1002 /* FIXME: check for float32 and AC3? */
1007 EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format);
1009 static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid,
1010 int flags, unsigned int verb, unsigned int parm)
1012 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
1015 if (snd_hdac_exec_verb(hdac, cmd, flags, &res))
1021 static int codec_write(struct hdac_device *hdac, hda_nid_t nid,
1022 int flags, unsigned int verb, unsigned int parm)
1024 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
1026 return snd_hdac_exec_verb(hdac, cmd, flags, NULL);
1030 * snd_hdac_codec_read - send a command and get the response
1031 * @hdac: the HDAC device
1032 * @nid: NID to send the command
1033 * @flags: optional bit flags
1034 * @verb: the verb to send
1035 * @parm: the parameter for the verb
1037 * Send a single command and read the corresponding response.
1039 * Returns the obtained response value, or -1 for an error.
1041 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
1042 int flags, unsigned int verb, unsigned int parm)
1044 return codec_read(hdac, nid, flags, verb, parm);
1046 EXPORT_SYMBOL_GPL(snd_hdac_codec_read);
1049 * snd_hdac_codec_write - send a single command without waiting for response
1050 * @hdac: the HDAC device
1051 * @nid: NID to send the command
1052 * @flags: optional bit flags
1053 * @verb: the verb to send
1054 * @parm: the parameter for the verb
1056 * Send a single command without waiting for response.
1058 * Returns 0 if successful, or a negative error code.
1060 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
1061 int flags, unsigned int verb, unsigned int parm)
1063 return codec_write(hdac, nid, flags, verb, parm);
1065 EXPORT_SYMBOL_GPL(snd_hdac_codec_write);
1068 * snd_hdac_check_power_state - check whether the actual power state matches
1069 * with the target state
1071 * @hdac: the HDAC device
1072 * @nid: NID to send the command
1073 * @target_state: target state to check for
1075 * Return true if state matches, false if not
1077 bool snd_hdac_check_power_state(struct hdac_device *hdac,
1078 hda_nid_t nid, unsigned int target_state)
1080 unsigned int state = codec_read(hdac, nid, 0,
1081 AC_VERB_GET_POWER_STATE, 0);
1083 if (state & AC_PWRST_ERROR)
1085 state = (state >> 4) & 0x0f;
1086 return (state == target_state);
1088 EXPORT_SYMBOL_GPL(snd_hdac_check_power_state);