2 * HD-audio codec core device
5 #include <linux/init.h>
6 #include <linux/delay.h>
7 #include <linux/device.h>
8 #include <linux/slab.h>
9 #include <linux/module.h>
10 #include <linux/export.h>
11 #include <linux/pm_runtime.h>
12 #include <sound/hdaudio.h>
13 #include <sound/hda_regmap.h>
14 #include <sound/pcm.h>
17 static void setup_fg_nodes(struct hdac_device *codec);
18 static int get_codec_vendor_name(struct hdac_device *codec);
20 static void default_release(struct device *dev)
22 snd_hdac_device_exit(container_of(dev, struct hdac_device, dev));
26 * snd_hdac_device_init - initialize the HD-audio codec base device
27 * @codec: device to initialize
29 * @name: device name string
30 * @addr: codec address
32 * Returns zero for success or a negative error code.
34 * This function increments the runtime PM counter and marks it active.
35 * The caller needs to turn it off appropriately later.
37 * The caller needs to set the device's release op properly by itself.
39 int snd_hdac_device_init(struct hdac_device *codec, struct hdac_bus *bus,
40 const char *name, unsigned int addr)
47 device_initialize(dev);
48 dev->parent = bus->dev;
49 dev->bus = &snd_hda_bus_type;
50 dev->release = default_release;
51 dev->groups = hdac_dev_attr_groups;
52 dev_set_name(dev, "%s", name);
53 device_enable_async_suspend(dev);
57 codec->type = HDA_DEV_CORE;
58 pm_runtime_set_active(&codec->dev);
59 pm_runtime_get_noresume(&codec->dev);
60 atomic_set(&codec->in_pm, 0);
62 err = snd_hdac_bus_add_device(bus, codec);
67 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
69 if (codec->vendor_id == -1) {
70 /* read again, hopefully the access method was corrected
73 codec->vendor_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
77 codec->subsystem_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
79 codec->revision_id = snd_hdac_read_parm(codec, AC_NODE_ROOT,
82 setup_fg_nodes(codec);
83 if (!codec->afg && !codec->mfg) {
84 dev_err(dev, "no AFG or MFG node found\n");
89 fg = codec->afg ? codec->afg : codec->mfg;
91 err = snd_hdac_refresh_widgets(codec, false);
95 codec->power_caps = snd_hdac_read_parm(codec, fg, AC_PAR_POWER_STATE);
96 /* reread ssid if not set by parameter */
97 if (codec->subsystem_id == -1 || codec->subsystem_id == 0)
98 snd_hdac_read(codec, fg, AC_VERB_GET_SUBSYSTEM_ID, 0,
99 &codec->subsystem_id);
101 err = get_codec_vendor_name(codec);
105 codec->chip_name = kasprintf(GFP_KERNEL, "ID %x",
106 codec->vendor_id & 0xffff);
107 if (!codec->chip_name) {
115 put_device(&codec->dev);
118 EXPORT_SYMBOL_GPL(snd_hdac_device_init);
121 * snd_hdac_device_exit - clean up the HD-audio codec base device
122 * @codec: device to clean up
124 void snd_hdac_device_exit(struct hdac_device *codec)
126 pm_runtime_put_noidle(&codec->dev);
127 /* keep balance of runtime PM child_count in parent device */
128 pm_runtime_set_suspended(&codec->dev);
129 snd_hdac_bus_remove_device(codec->bus, codec);
130 kfree(codec->vendor_name);
131 kfree(codec->chip_name);
133 EXPORT_SYMBOL_GPL(snd_hdac_device_exit);
136 * snd_hdac_device_register - register the hd-audio codec base device
137 * codec: the device to register
139 int snd_hdac_device_register(struct hdac_device *codec)
143 err = device_add(&codec->dev);
146 err = hda_widget_sysfs_init(codec);
148 device_del(&codec->dev);
154 EXPORT_SYMBOL_GPL(snd_hdac_device_register);
157 * snd_hdac_device_unregister - unregister the hd-audio codec base device
158 * codec: the device to unregister
160 void snd_hdac_device_unregister(struct hdac_device *codec)
162 if (device_is_registered(&codec->dev)) {
163 hda_widget_sysfs_exit(codec);
164 device_del(&codec->dev);
165 snd_hdac_bus_remove_device(codec->bus, codec);
168 EXPORT_SYMBOL_GPL(snd_hdac_device_unregister);
171 * snd_hdac_device_set_chip_name - set/update the codec name
172 * @codec: the HDAC device
173 * @name: name string to set
175 * Returns 0 if the name is set or updated, or a negative error code.
177 int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name)
183 newname = kstrdup(name, GFP_KERNEL);
186 kfree(codec->chip_name);
187 codec->chip_name = newname;
190 EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name);
193 * snd_hdac_codec_modalias - give the module alias name
194 * @codec: HDAC device
195 * @buf: string buffer to store
196 * @size: string buffer size
198 * Returns the size of string, like snprintf(), or a negative error code.
200 int snd_hdac_codec_modalias(struct hdac_device *codec, char *buf, size_t size)
202 return snprintf(buf, size, "hdaudio:v%08Xr%08Xa%02X\n",
203 codec->vendor_id, codec->revision_id, codec->type);
205 EXPORT_SYMBOL_GPL(snd_hdac_codec_modalias);
208 * snd_hdac_make_cmd - compose a 32bit command word to be sent to the
209 * HD-audio controller
210 * @codec: the codec object
211 * @nid: NID to encode
212 * @verb: verb to encode
213 * @parm: parameter to encode
215 * Return an encoded command verb or -1 for error.
217 unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
218 unsigned int verb, unsigned int parm)
223 if ((addr & ~0xf) || (nid & ~0x7f) ||
224 (verb & ~0xfff) || (parm & ~0xffff)) {
225 dev_err(&codec->dev, "out of range cmd %x:%x:%x:%x\n",
226 addr, nid, verb, parm);
231 val |= (u32)nid << 20;
236 EXPORT_SYMBOL_GPL(snd_hdac_make_cmd);
239 * snd_hdac_exec_verb - execute an encoded verb
240 * @codec: the codec object
241 * @cmd: encoded verb to execute
242 * @flags: optional flags, pass zero for default
243 * @res: the pointer to store the result, NULL if running async
245 * Returns zero if successful, or a negative error code.
247 * This calls the exec_verb op when set in hdac_codec. If not,
248 * call the default snd_hdac_bus_exec_verb().
250 int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
251 unsigned int flags, unsigned int *res)
253 if (codec->exec_verb)
254 return codec->exec_verb(codec, cmd, flags, res);
255 return snd_hdac_bus_exec_verb(codec->bus, codec->addr, cmd, res);
257 EXPORT_SYMBOL_GPL(snd_hdac_exec_verb);
261 * snd_hdac_read - execute a verb
262 * @codec: the codec object
263 * @nid: NID to execute a verb
264 * @verb: verb to execute
265 * @parm: parameter for a verb
266 * @res: the pointer to store the result, NULL if running async
268 * Returns zero if successful, or a negative error code.
270 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
271 unsigned int verb, unsigned int parm, unsigned int *res)
273 unsigned int cmd = snd_hdac_make_cmd(codec, nid, verb, parm);
275 return snd_hdac_exec_verb(codec, cmd, 0, res);
277 EXPORT_SYMBOL_GPL(snd_hdac_read);
280 * _snd_hdac_read_parm - read a parmeter
282 * This function returns zero or an error unlike snd_hdac_read_parm().
284 int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
289 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
290 return snd_hdac_regmap_read_raw(codec, cmd, res);
292 EXPORT_SYMBOL_GPL(_snd_hdac_read_parm);
295 * snd_hdac_read_parm_uncached - read a codec parameter without caching
296 * @codec: the codec object
297 * @nid: NID to read a parameter
298 * @parm: parameter to read
300 * Returns -1 for error. If you need to distinguish the error more
301 * strictly, use snd_hdac_read() directly.
303 int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
306 unsigned int cmd, val;
308 cmd = snd_hdac_regmap_encode_verb(nid, AC_VERB_PARAMETERS) | parm;
309 if (snd_hdac_regmap_read_raw_uncached(codec, cmd, &val) < 0)
313 EXPORT_SYMBOL_GPL(snd_hdac_read_parm_uncached);
316 * snd_hdac_override_parm - override read-only parameters
317 * @codec: the codec object
318 * @nid: NID for the parameter
319 * @parm: the parameter to change
320 * @val: the parameter value to overwrite
322 int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
323 unsigned int parm, unsigned int val)
325 unsigned int verb = (AC_VERB_PARAMETERS << 8) | (nid << 20) | parm;
331 codec->caps_overwriting = true;
332 err = snd_hdac_regmap_write_raw(codec, verb, val);
333 codec->caps_overwriting = false;
336 EXPORT_SYMBOL_GPL(snd_hdac_override_parm);
339 * snd_hdac_get_sub_nodes - get start NID and number of subtree nodes
340 * @codec: the codec object
341 * @nid: NID to inspect
342 * @start_id: the pointer to store the starting NID
344 * Returns the number of subtree nodes or zero if not found.
345 * This function reads parameters always without caching.
347 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
352 parm = snd_hdac_read_parm_uncached(codec, nid, AC_PAR_NODE_COUNT);
357 *start_id = (parm >> 16) & 0x7fff;
358 return (int)(parm & 0x7fff);
360 EXPORT_SYMBOL_GPL(snd_hdac_get_sub_nodes);
363 * look for an AFG and MFG nodes
365 static void setup_fg_nodes(struct hdac_device *codec)
367 int i, total_nodes, function_id;
370 total_nodes = snd_hdac_get_sub_nodes(codec, AC_NODE_ROOT, &nid);
371 for (i = 0; i < total_nodes; i++, nid++) {
372 function_id = snd_hdac_read_parm(codec, nid,
373 AC_PAR_FUNCTION_TYPE);
374 switch (function_id & 0xff) {
375 case AC_GRP_AUDIO_FUNCTION:
377 codec->afg_function_id = function_id & 0xff;
378 codec->afg_unsol = (function_id >> 8) & 1;
380 case AC_GRP_MODEM_FUNCTION:
382 codec->mfg_function_id = function_id & 0xff;
383 codec->mfg_unsol = (function_id >> 8) & 1;
392 * snd_hdac_refresh_widgets - Reset the widget start/end nodes
393 * @codec: the codec object
394 * @sysfs: re-initialize sysfs tree, too
396 int snd_hdac_refresh_widgets(struct hdac_device *codec, bool sysfs)
401 nums = snd_hdac_get_sub_nodes(codec, codec->afg, &start_nid);
402 if (!start_nid || nums <= 0 || nums >= 0xff) {
403 dev_err(&codec->dev, "cannot read sub nodes for FG 0x%02x\n",
409 err = hda_widget_sysfs_reinit(codec, start_nid, nums);
414 codec->num_nodes = nums;
415 codec->start_nid = start_nid;
416 codec->end_nid = start_nid + nums;
419 EXPORT_SYMBOL_GPL(snd_hdac_refresh_widgets);
421 /* return CONNLIST_LEN parameter of the given widget */
422 static unsigned int get_num_conns(struct hdac_device *codec, hda_nid_t nid)
424 unsigned int wcaps = get_wcaps(codec, nid);
427 if (!(wcaps & AC_WCAP_CONN_LIST) &&
428 get_wcaps_type(wcaps) != AC_WID_VOL_KNB)
431 parm = snd_hdac_read_parm(codec, nid, AC_PAR_CONNLIST_LEN);
438 * snd_hdac_get_connections - get a widget connection list
439 * @codec: the codec object
441 * @conn_list: the array to store the results, can be NULL
442 * @max_conns: the max size of the given array
444 * Returns the number of connected widgets, zero for no connection, or a
445 * negative error code. When the number of elements don't fit with the
446 * given array size, it returns -ENOSPC.
448 * When @conn_list is NULL, it just checks the number of connections.
450 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
451 hda_nid_t *conn_list, int max_conns)
454 int i, conn_len, conns, err;
455 unsigned int shift, num_elems, mask;
459 parm = get_num_conns(codec, nid);
463 if (parm & AC_CLIST_LONG) {
472 conn_len = parm & AC_CLIST_LENGTH;
473 mask = (1 << (shift-1)) - 1;
476 return 0; /* no connection */
479 /* single connection */
480 err = snd_hdac_read(codec, nid, AC_VERB_GET_CONNECT_LIST, 0,
485 conn_list[0] = parm & mask;
489 /* multi connection */
492 for (i = 0; i < conn_len; i++) {
496 if (i % num_elems == 0) {
497 err = snd_hdac_read(codec, nid,
498 AC_VERB_GET_CONNECT_LIST, i,
503 range_val = !!(parm & (1 << (shift-1))); /* ranges */
505 if (val == 0 && null_count++) { /* no second chance */
507 "invalid CONNECT_LIST verb %x[%i]:%x\n",
513 /* ranges between the previous and this one */
514 if (!prev_nid || prev_nid >= val) {
515 dev_warn(&codec->dev,
516 "invalid dep_range_val %x:%x\n",
520 for (n = prev_nid + 1; n <= val; n++) {
522 if (conns >= max_conns)
524 conn_list[conns] = n;
530 if (conns >= max_conns)
532 conn_list[conns] = val;
540 EXPORT_SYMBOL_GPL(snd_hdac_get_connections);
544 * snd_hdac_power_up - power up the codec
545 * @codec: the codec object
547 * This function calls the runtime PM helper to power up the given codec.
548 * Unlike snd_hdac_power_up_pm(), you should call this only for the code
549 * path that isn't included in PM path. Otherwise it gets stuck.
551 * Returns zero if successful, or a negative error code.
553 int snd_hdac_power_up(struct hdac_device *codec)
555 return pm_runtime_get_sync(&codec->dev);
557 EXPORT_SYMBOL_GPL(snd_hdac_power_up);
560 * snd_hdac_power_down - power down the codec
561 * @codec: the codec object
563 * Returns zero if successful, or a negative error code.
565 int snd_hdac_power_down(struct hdac_device *codec)
567 struct device *dev = &codec->dev;
569 pm_runtime_mark_last_busy(dev);
570 return pm_runtime_put_autosuspend(dev);
572 EXPORT_SYMBOL_GPL(snd_hdac_power_down);
575 * snd_hdac_power_up_pm - power up the codec
576 * @codec: the codec object
578 * This function can be called in a recursive code path like init code
579 * which may be called by PM suspend/resume again. OTOH, if a power-up
580 * call must wake up the sleeper (e.g. in a kctl callback), use
581 * snd_hdac_power_up() instead.
583 * Returns zero if successful, or a negative error code.
585 int snd_hdac_power_up_pm(struct hdac_device *codec)
587 if (!atomic_inc_not_zero(&codec->in_pm))
588 return snd_hdac_power_up(codec);
591 EXPORT_SYMBOL_GPL(snd_hdac_power_up_pm);
593 /* like snd_hdac_power_up_pm(), but only increment the pm count when
594 * already powered up. Returns -1 if not powered up, 1 if incremented
595 * or 0 if unchanged. Only used in hdac_regmap.c
597 int snd_hdac_keep_power_up(struct hdac_device *codec)
599 if (!atomic_inc_not_zero(&codec->in_pm)) {
600 int ret = pm_runtime_get_if_in_use(&codec->dev);
610 * snd_hdac_power_down_pm - power down the codec
611 * @codec: the codec object
613 * Like snd_hdac_power_up_pm(), this function is used in a recursive
614 * code path like init code which may be called by PM suspend/resume again.
616 * Returns zero if successful, or a negative error code.
618 int snd_hdac_power_down_pm(struct hdac_device *codec)
620 if (atomic_dec_if_positive(&codec->in_pm) < 0)
621 return snd_hdac_power_down(codec);
624 EXPORT_SYMBOL_GPL(snd_hdac_power_down_pm);
628 * snd_hdac_link_power - Enable/disable the link power for a codec
629 * @codec: the codec object
630 * @bool: enable or disable the link power
632 int snd_hdac_link_power(struct hdac_device *codec, bool enable)
634 if (!codec->link_power_control)
637 if (codec->bus->ops->link_power)
638 return codec->bus->ops->link_power(codec->bus, enable);
642 EXPORT_SYMBOL_GPL(snd_hdac_link_power);
644 /* codec vendor labels */
645 struct hda_vendor_id {
650 static struct hda_vendor_id hda_vendor_ids[] = {
652 { 0x1013, "Cirrus Logic" },
653 { 0x1057, "Motorola" },
654 { 0x1095, "Silicon Image" },
655 { 0x10de, "Nvidia" },
656 { 0x10ec, "Realtek" },
657 { 0x1102, "Creative" },
661 { 0x11d4, "Analog Devices" },
662 { 0x13f6, "C-Media" },
663 { 0x14f1, "Conexant" },
664 { 0x17e8, "Chrontel" },
666 { 0x1aec, "Wolfson Microelectronics" },
668 { 0x434d, "C-Media" },
670 { 0x8384, "SigmaTel" },
674 /* store the codec vendor name */
675 static int get_codec_vendor_name(struct hdac_device *codec)
677 const struct hda_vendor_id *c;
678 u16 vendor_id = codec->vendor_id >> 16;
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;
687 codec->vendor_name = kasprintf(GFP_KERNEL, "Generic %04x", vendor_id);
688 return codec->vendor_name ? 0 : -ENOMEM;
694 struct hda_rate_tbl {
696 unsigned int alsa_bits;
697 unsigned int hda_fmt;
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))
705 static struct hda_rate_tbl rate_bits[] = {
706 /* rate in Hz, ALSA rate bitmask, HDA format value */
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 */
723 /* not autodetected value */
724 { 9600, SNDRV_PCM_RATE_KNOT, HDA_RATE(48, 1, 5) },
726 { 0 } /* terminator */
730 * snd_hdac_calc_stream_format - calculate the format bitset
731 * @rate: the sample rate
732 * @channels: the number of channels
733 * @format: the PCM format (SNDRV_PCM_FORMAT_XXX)
734 * @maxbps: the max. bps
735 * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant)
737 * Calculate the format bitset from the given rate, channels and th PCM format.
739 * Return zero if invalid.
741 unsigned int snd_hdac_calc_stream_format(unsigned int rate,
742 unsigned int channels,
743 snd_pcm_format_t format,
745 unsigned short spdif_ctls)
748 unsigned int val = 0;
750 for (i = 0; rate_bits[i].hz; i++)
751 if (rate_bits[i].hz == rate) {
752 val = rate_bits[i].hda_fmt;
755 if (!rate_bits[i].hz)
758 if (channels == 0 || channels > 8)
762 switch (snd_pcm_format_width(format)) {
764 val |= AC_FMT_BITS_8;
767 val |= AC_FMT_BITS_16;
772 if (maxbps >= 32 || format == SNDRV_PCM_FORMAT_FLOAT_LE)
773 val |= AC_FMT_BITS_32;
774 else if (maxbps >= 24)
775 val |= AC_FMT_BITS_24;
777 val |= AC_FMT_BITS_20;
783 if (spdif_ctls & AC_DIG1_NONAUDIO)
784 val |= AC_FMT_TYPE_NON_PCM;
788 EXPORT_SYMBOL_GPL(snd_hdac_calc_stream_format);
790 static unsigned int query_pcm_param(struct hdac_device *codec, hda_nid_t nid)
792 unsigned int val = 0;
794 if (nid != codec->afg &&
795 (get_wcaps(codec, nid) & AC_WCAP_FORMAT_OVRD))
796 val = snd_hdac_read_parm(codec, nid, AC_PAR_PCM);
797 if (!val || val == -1)
798 val = snd_hdac_read_parm(codec, codec->afg, AC_PAR_PCM);
799 if (!val || val == -1)
804 static unsigned int query_stream_param(struct hdac_device *codec, hda_nid_t nid)
806 unsigned int streams = snd_hdac_read_parm(codec, nid, AC_PAR_STREAM);
808 if (!streams || streams == -1)
809 streams = snd_hdac_read_parm(codec, codec->afg, AC_PAR_STREAM);
810 if (!streams || streams == -1)
816 * snd_hdac_query_supported_pcm - query the supported PCM rates and formats
817 * @codec: the codec object
819 * @ratesp: the pointer to store the detected rate bitflags
820 * @formatsp: the pointer to store the detected formats
821 * @bpsp: the pointer to store the detected format widths
823 * Queries the supported PCM rates and formats. The NULL @ratesp, @formatsp
824 * or @bsps argument is ignored.
826 * Returns 0 if successful, otherwise a negative error code.
828 int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
829 u32 *ratesp, u64 *formatsp, unsigned int *bpsp)
831 unsigned int i, val, wcaps;
833 wcaps = get_wcaps(codec, nid);
834 val = query_pcm_param(codec, nid);
838 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++) {
840 rates |= rate_bits[i].alsa_bits;
844 "rates == 0 (nid=0x%x, val=0x%x, ovrd=%i)\n",
846 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0);
852 if (formatsp || bpsp) {
854 unsigned int streams, bps;
856 streams = query_stream_param(codec, nid);
861 if (streams & AC_SUPFMT_PCM) {
862 if (val & AC_SUPPCM_BITS_8) {
863 formats |= SNDRV_PCM_FMTBIT_U8;
866 if (val & AC_SUPPCM_BITS_16) {
867 formats |= SNDRV_PCM_FMTBIT_S16_LE;
870 if (wcaps & AC_WCAP_DIGITAL) {
871 if (val & AC_SUPPCM_BITS_32)
872 formats |= SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE;
873 if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24))
874 formats |= SNDRV_PCM_FMTBIT_S32_LE;
875 if (val & AC_SUPPCM_BITS_24)
877 else if (val & AC_SUPPCM_BITS_20)
879 } else if (val & (AC_SUPPCM_BITS_20|AC_SUPPCM_BITS_24|
880 AC_SUPPCM_BITS_32)) {
881 formats |= SNDRV_PCM_FMTBIT_S32_LE;
882 if (val & AC_SUPPCM_BITS_32)
884 else if (val & AC_SUPPCM_BITS_24)
886 else if (val & AC_SUPPCM_BITS_20)
890 #if 0 /* FIXME: CS4206 doesn't work, which is the only codec supporting float */
891 if (streams & AC_SUPFMT_FLOAT32) {
892 formats |= SNDRV_PCM_FMTBIT_FLOAT_LE;
897 if (streams == AC_SUPFMT_AC3) {
898 /* should be exclusive */
899 /* temporary hack: we have still no proper support
900 * for the direct AC3 stream...
902 formats |= SNDRV_PCM_FMTBIT_U8;
907 "formats == 0 (nid=0x%x, val=0x%x, ovrd=%i, streams=0x%x)\n",
909 (wcaps & AC_WCAP_FORMAT_OVRD) ? 1 : 0,
921 EXPORT_SYMBOL_GPL(snd_hdac_query_supported_pcm);
924 * snd_hdac_is_supported_format - Check the validity of the format
925 * @codec: the codec object
927 * @format: the HD-audio format value to check
929 * Check whether the given node supports the format value.
931 * Returns true if supported, false if not.
933 bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
937 unsigned int val = 0, rate, stream;
939 val = query_pcm_param(codec, nid);
943 rate = format & 0xff00;
944 for (i = 0; i < AC_PAR_PCM_RATE_BITS; i++)
945 if (rate_bits[i].hda_fmt == rate) {
950 if (i >= AC_PAR_PCM_RATE_BITS)
953 stream = query_stream_param(codec, nid);
957 if (stream & AC_SUPFMT_PCM) {
958 switch (format & 0xf0) {
960 if (!(val & AC_SUPPCM_BITS_8))
964 if (!(val & AC_SUPPCM_BITS_16))
968 if (!(val & AC_SUPPCM_BITS_20))
972 if (!(val & AC_SUPPCM_BITS_24))
976 if (!(val & AC_SUPPCM_BITS_32))
983 /* FIXME: check for float32 and AC3? */
988 EXPORT_SYMBOL_GPL(snd_hdac_is_supported_format);
990 static unsigned int codec_read(struct hdac_device *hdac, hda_nid_t nid,
991 int flags, unsigned int verb, unsigned int parm)
993 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
996 if (snd_hdac_exec_verb(hdac, cmd, flags, &res))
1002 static int codec_write(struct hdac_device *hdac, hda_nid_t nid,
1003 int flags, unsigned int verb, unsigned int parm)
1005 unsigned int cmd = snd_hdac_make_cmd(hdac, nid, verb, parm);
1007 return snd_hdac_exec_verb(hdac, cmd, flags, NULL);
1011 * snd_hdac_codec_read - send a command and get the response
1012 * @hdac: the HDAC device
1013 * @nid: NID to send the command
1014 * @flags: optional bit flags
1015 * @verb: the verb to send
1016 * @parm: the parameter for the verb
1018 * Send a single command and read the corresponding response.
1020 * Returns the obtained response value, or -1 for an error.
1022 int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
1023 int flags, unsigned int verb, unsigned int parm)
1025 return codec_read(hdac, nid, flags, verb, parm);
1027 EXPORT_SYMBOL_GPL(snd_hdac_codec_read);
1030 * snd_hdac_codec_write - send a single command without waiting for 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 without waiting for response.
1039 * Returns 0 if successful, or a negative error code.
1041 int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
1042 int flags, unsigned int verb, unsigned int parm)
1044 return codec_write(hdac, nid, flags, verb, parm);
1046 EXPORT_SYMBOL_GPL(snd_hdac_codec_write);
1049 * snd_hdac_check_power_state - check whether the actual power state matches
1050 * with the target state
1052 * @hdac: the HDAC device
1053 * @nid: NID to send the command
1054 * @target_state: target state to check for
1056 * Return true if state matches, false if not
1058 bool snd_hdac_check_power_state(struct hdac_device *hdac,
1059 hda_nid_t nid, unsigned int target_state)
1061 unsigned int state = codec_read(hdac, nid, 0,
1062 AC_VERB_GET_POWER_STATE, 0);
1064 if (state & AC_PWRST_ERROR)
1066 state = (state >> 4) & 0x0f;
1067 return (state == target_state);
1069 EXPORT_SYMBOL_GPL(snd_hdac_check_power_state);
1071 * snd_hdac_sync_power_state - wait until actual power state matches
1072 * with the target state
1074 * @hdac: the HDAC device
1075 * @nid: NID to send the command
1076 * @target_state: target state to check for
1078 * Return power state or PS_ERROR if codec rejects GET verb.
1080 unsigned int snd_hdac_sync_power_state(struct hdac_device *codec,
1081 hda_nid_t nid, unsigned int power_state)
1083 unsigned long end_time = jiffies + msecs_to_jiffies(500);
1084 unsigned int state, actual_state, count;
1086 for (count = 0; count < 500; count++) {
1087 state = snd_hdac_codec_read(codec, nid, 0,
1088 AC_VERB_GET_POWER_STATE, 0);
1089 if (state & AC_PWRST_ERROR) {
1093 actual_state = (state >> 4) & 0x0f;
1094 if (actual_state == power_state)
1096 if (time_after_eq(jiffies, end_time))
1098 /* wait until the codec reachs to the target state */
1103 EXPORT_SYMBOL_GPL(snd_hdac_sync_power_state);