/* * Send and receive a verb - passed to exec_verb override for hdac_device
*/ staticint codec_exec_verb(struct hdac_device *dev, unsignedint cmd, unsignedint flags, unsignedint *res)
{ struct hda_codec *codec = container_of(dev, struct hda_codec, core); struct hda_bus *bus = codec->bus; int err;
if (cmd == ~0) return -1;
again:
snd_hda_power_up_pm(codec);
mutex_lock(&bus->core.cmd_mutex); if (flags & HDA_RW_NO_RESPONSE_FALLBACK)
bus->no_response_fallback = 1;
err = snd_hdac_bus_exec_verb_unlocked(&bus->core, codec->core.addr,
cmd, res);
bus->no_response_fallback = 0;
mutex_unlock(&bus->core.cmd_mutex);
snd_hda_power_down_pm(codec); if (!codec_in_pm(codec) && res && err == -EAGAIN) { if (bus->response_reset) {
codec_dbg(codec, "resetting BUS due to fatal communication error\n");
snd_hda_bus_reset(bus);
} goto again;
} /* clear reset-flag when the communication gets recovered */ if (!err || codec_in_pm(codec))
bus->response_reset = 0; return err;
}
/** * snd_hda_sequence_write - sequence writes * @codec: the HDA codec * @seq: VERB array to send * * Send the commands sequentially from the given array. * The array must be terminated with NID=0.
*/ void snd_hda_sequence_write(struct hda_codec *codec, conststruct hda_verb *seq)
{ for (; seq->nid; seq++)
snd_hda_codec_write(codec, seq->nid, 0, seq->verb, seq->param);
}
EXPORT_SYMBOL_GPL(snd_hda_sequence_write);
/* connection list element */ struct hda_conn_list { struct list_head list; int len;
hda_nid_t nid;
hda_nid_t conns[] __counted_by(len);
};
p = kmalloc(struct_size(p, conns, len), GFP_KERNEL); if (!p) return -ENOMEM;
p->len = len;
p->nid = nid;
memcpy(p->conns, list, len * sizeof(hda_nid_t));
list_add(&p->list, &codec->conn_list); return 0;
}
staticvoid remove_conn_list(struct hda_codec *codec)
{ while (!list_empty(&codec->conn_list)) { struct hda_conn_list *p;
p = list_first_entry(&codec->conn_list, typeof(*p), list);
list_del(&p->list);
kfree(p);
}
}
/* read the connection and add to the cache */ staticint read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid)
{
hda_nid_t list[32];
hda_nid_t *result = list; int len;
len = snd_hda_get_raw_connections(codec, nid, list, ARRAY_SIZE(list)); if (len == -ENOSPC) {
len = snd_hda_get_num_raw_conns(codec, nid);
result = kmalloc_array(len, sizeof(hda_nid_t), GFP_KERNEL); if (!result) return -ENOMEM;
len = snd_hda_get_raw_connections(codec, nid, result, len);
} if (len >= 0)
len = snd_hda_override_conn_list(codec, nid, len, result); if (result != list)
kfree(result); return len;
}
/** * snd_hda_get_conn_list - get connection list * @codec: the HDA codec * @nid: NID to parse * @listp: the pointer to store NID list * * Parses the connection list of the given widget and stores the pointer * to the list of NIDs. * * Returns the number of connections, or a negative error code. * * Note that the returned pointer isn't protected against the list * modification. If snd_hda_override_conn_list() might be called * concurrently, protect with a mutex appropriately.
*/ int snd_hda_get_conn_list(struct hda_codec *codec, hda_nid_t nid, const hda_nid_t **listp)
{ bool added = false;
for (;;) { int err; conststruct hda_conn_list *p;
/* if the connection-list is already cached, read it */
p = lookup_conn_list(codec, nid); if (p) { if (listp)
*listp = p->conns; return p->len;
} if (snd_BUG_ON(added)) return -EINVAL;
/** * snd_hda_get_connections - copy connection list * @codec: the HDA codec * @nid: NID to parse * @conn_list: connection list array; when NULL, checks only the size * @max_conns: max. number of connections to store * * Parses the connection list of the given widget and stores the list * of NIDs. * * Returns the number of connections, or a negative error code.
*/ int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
hda_nid_t *conn_list, int max_conns)
{ const hda_nid_t *list; int len = snd_hda_get_conn_list(codec, nid, &list);
if (len > 0 && conn_list) { if (len > max_conns) {
codec_err(codec, "Too many connections %d for NID 0x%x\n",
len, nid); return -EINVAL;
}
memcpy(conn_list, list, len * sizeof(hda_nid_t));
}
/** * snd_hda_override_conn_list - add/modify the connection-list to cache * @codec: the HDA codec * @nid: NID to parse * @len: number of connection list entries * @list: the list of connection entries * * Add or modify the given connection-list to the cache. If the corresponding * cache already exists, invalidate it and append a new one. * * Returns zero or a negative error code.
*/ int snd_hda_override_conn_list(struct hda_codec *codec, hda_nid_t nid, int len, const hda_nid_t *list)
{ struct hda_conn_list *p;
p = lookup_conn_list(codec, nid); if (p) {
list_del(&p->list);
kfree(p);
}
/** * snd_hda_get_conn_index - get the connection index of the given NID * @codec: the HDA codec * @mux: NID containing the list * @nid: NID to select * @recursive: 1 when searching NID recursively, otherwise 0 * * Parses the connection list of the widget @mux and checks whether the * widget @nid is present. If it is, return the connection index. * Otherwise it returns -1.
*/ int snd_hda_get_conn_index(struct hda_codec *codec, hda_nid_t mux,
hda_nid_t nid, int recursive)
{ const hda_nid_t *conn; int i, nums;
nums = snd_hda_get_conn_list(codec, mux, &conn); for (i = 0; i < nums; i++) if (conn[i] == nid) return i; if (!recursive) return -1; if (recursive > 10) {
codec_dbg(codec, "too deep connection for 0x%x\n", nid); return -1;
}
recursive++; for (i = 0; i < nums; i++) { unsignedint type = get_wcaps_type(get_wcaps(codec, conn[i])); if (type == AC_WID_PIN || type == AC_WID_AUD_OUT) continue; if (snd_hda_get_conn_index(codec, conn[i], nid, recursive) >= 0) return i;
} return -1;
}
EXPORT_SYMBOL_GPL(snd_hda_get_conn_index);
/** * snd_hda_get_num_devices - get DEVLIST_LEN parameter of the given widget * @codec: the HDA codec * @nid: NID of the pin to parse * * Get the device entry number on the given widget. This is a feature of * DP MST audio. Each pin can have several device entries in it.
*/ unsignedint snd_hda_get_num_devices(struct hda_codec *codec, hda_nid_t nid)
{ unsignedint wcaps = get_wcaps(codec, nid); unsignedint parm;
/** * snd_hda_get_devices - copy device list without cache * @codec: the HDA codec * @nid: NID of the pin to parse * @dev_list: device list array * @max_devices: max. number of devices to store * * Copy the device list. This info is dynamic and so not cached. * Currently called only from hda_proc.c, so not exported.
*/ int snd_hda_get_devices(struct hda_codec *codec, hda_nid_t nid,
u8 *dev_list, int max_devices)
{ unsignedint parm; int i, dev_len, devices;
parm = snd_hda_get_num_devices(codec, nid); if (!parm) /* not multi-stream capable */ return 0;
devices = 0; while (devices < dev_len) { if (snd_hdac_read(&codec->core, nid,
AC_VERB_GET_DEVICE_LIST, devices, &parm)) break; /* error */
for (i = 0; i < 8; i++) {
dev_list[devices] = (u8)parm;
parm >>= 4;
devices++; if (devices >= dev_len) break;
}
} return devices;
}
/** * snd_hda_get_dev_select - get device entry select on the pin * @codec: the HDA codec * @nid: NID of the pin to get device entry select * * Get the devcie entry select on the pin. Return the device entry * id selected on the pin. Return 0 means the first device entry * is selected or MST is not supported.
*/ int snd_hda_get_dev_select(struct hda_codec *codec, hda_nid_t nid)
{ /* not support dp_mst will always return 0, using first dev_entry */ if (!codec->dp_mst) return 0;
/** * snd_hda_set_dev_select - set device entry select on the pin * @codec: the HDA codec * @nid: NID of the pin to set device entry select * @dev_id: device entry id to be set * * Set the device entry select on the pin nid.
*/ int snd_hda_set_dev_select(struct hda_codec *codec, hda_nid_t nid, int dev_id)
{ int ret, num_devices;
/* not support dp_mst will always return 0, using first dev_entry */ if (!codec->dp_mst) return 0;
/* AC_PAR_DEVLIST_LEN is 0 based. */
num_devices = snd_hda_get_num_devices(codec, nid) + 1; /* If Device List Length is 0 (num_device = 1), * the pin is not multi stream capable. * Do nothing in this case.
*/ if (num_devices == 1) return 0;
/* Behavior of setting index being equal to or greater than * Device List Length is not predictable
*/ if (num_devices <= dev_id) return -EINVAL;
ret = snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_DEVICE_SEL, dev_id);
/* * read widget caps for each widget and store in cache
*/ staticint read_widget_caps(struct hda_codec *codec, hda_nid_t fg_node)
{ int i;
hda_nid_t nid;
codec->wcaps = kmalloc_array(codec->core.num_nodes, 4, GFP_KERNEL); if (!codec->wcaps) return -ENOMEM;
nid = codec->core.start_nid; for (i = 0; i < codec->core.num_nodes; i++, nid++)
codec->wcaps[i] = snd_hdac_read_parm_uncached(&codec->core,
nid, AC_PAR_AUDIO_WIDGET_CAP); return 0;
}
/* read all pin default configurations and save codec->init_pins */ staticint read_pin_defaults(struct hda_codec *codec)
{
hda_nid_t nid;
for_each_hda_codec_node(nid, codec) { struct hda_pincfg *pin; unsignedint wcaps = get_wcaps(codec, nid); unsignedint wid_type = get_wcaps_type(wcaps); if (wid_type != AC_WID_PIN) continue;
pin = snd_array_new(&codec->init_pins); if (!pin) return -ENOMEM;
pin->nid = nid;
pin->cfg = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_CONFIG_DEFAULT, 0); /* * all device entries are the same widget control so far * fixme: if any codec is different, need fix here
*/
pin->ctrl = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_PIN_WIDGET_CONTROL,
0);
} return 0;
}
/* look up the given pin config list and return the item matching with NID */ staticstruct hda_pincfg *look_up_pincfg(struct hda_codec *codec, struct snd_array *array,
hda_nid_t nid)
{ struct hda_pincfg *pin; int i;
snd_array_for_each(array, i, pin) { if (pin->nid == nid) return pin;
} return NULL;
}
/* set the current pin config value for the given NID. * the value is cached, and read via snd_hda_codec_get_pincfg()
*/ int snd_hda_add_pincfg(struct hda_codec *codec, struct snd_array *list,
hda_nid_t nid, unsignedint cfg)
{ struct hda_pincfg *pin;
/** * snd_hda_codec_set_pincfg - Override a pin default configuration * @codec: the HDA codec * @nid: NID to set the pin config * @cfg: the pin default config value * * Override a pin default configuration value in the cache. * This value can be read by snd_hda_codec_get_pincfg() in a higher * priority than the real hardware value.
*/ int snd_hda_codec_set_pincfg(struct hda_codec *codec,
hda_nid_t nid, unsignedint cfg)
{ return snd_hda_add_pincfg(codec, &codec->driver_pins, nid, cfg);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_set_pincfg);
/** * snd_hda_codec_get_pincfg - Obtain a pin-default configuration * @codec: the HDA codec * @nid: NID to get the pin config * * Get the current pin config value of the given pin NID. * If the pincfg value is cached or overridden via sysfs or driver, * returns the cached value.
*/ unsignedint snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid)
{ struct hda_pincfg *pin;
/** * snd_hda_codec_set_pin_target - remember the current pinctl target value * @codec: the HDA codec * @nid: pin NID * @val: assigned pinctl value * * This function stores the given value to a pinctl target value in the * pincfg table. This isn't always as same as the actually written value * but can be referred at any time via snd_hda_codec_get_pin_target().
*/ int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid, unsignedint val)
{ struct hda_pincfg *pin;
/** * snd_hda_codec_get_pin_target - return the current pinctl target value * @codec: the HDA codec * @nid: pin NID
*/ int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid)
{ struct hda_pincfg *pin;
/** * snd_hda_shutup_pins - Shut up all pins * @codec: the HDA codec * * Clear all pin controls to shup up before suspend for avoiding click noise. * The controls aren't cached so that they can be resumed properly.
*/ void snd_hda_shutup_pins(struct hda_codec *codec)
{ conststruct hda_pincfg *pin; int i;
/* don't shut up pins when unloading the driver; otherwise it breaks * the default pin setup at the next load of the driver
*/ if (codec->bus->shutdown) return;
snd_array_for_each(&codec->init_pins, i, pin) { /* use read here for syncing after issuing each verb */
snd_hda_codec_read(codec, pin->nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
}
codec->pins_shutup = 1;
}
EXPORT_SYMBOL_GPL(snd_hda_shutup_pins);
/* Restore the pin controls cleared previously via snd_hda_shutup_pins() */ staticvoid restore_shutup_pins(struct hda_codec *codec)
{ conststruct hda_pincfg *pin; int i;
if (!codec->pins_shutup) return; if (codec->bus->shutdown) return;
snd_array_for_each(&codec->init_pins, i, pin) {
snd_hda_codec_write(codec, pin->nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL,
pin->ctrl);
}
codec->pins_shutup = 0;
}
/* * audio-converter setup caches
*/ struct hda_cvt_setup {
hda_nid_t nid;
u8 stream_tag;
u8 channel_id;
u16 format_id; unsignedchar active; /* cvt is currently used */ unsignedchar dirty; /* setups should be cleared */
};
/* get or create a cache entry for the given audio converter NID */ staticstruct hda_cvt_setup *
get_hda_cvt_setup(struct hda_codec *codec, hda_nid_t nid)
{ struct hda_cvt_setup *p; int i;
snd_array_for_each(&codec->cvt_setups, i, p) { if (p->nid == nid) return p;
}
p = snd_array_new(&codec->cvt_setups); if (p)
p->nid = nid; return p;
}
/* enable/disable display power per codec */ void snd_hda_codec_display_power(struct hda_codec *codec, bool enable)
{ if (codec->display_power_control)
snd_hdac_display_power(&codec->bus->core, codec->addr, enable);
}
/** * snd_hda_codec_register - Finalize codec initialization * @codec: codec device to register * * Also called from hda_bind.c
*/ void snd_hda_codec_register(struct hda_codec *codec)
{ if (codec->core.registered) return; if (device_is_registered(hda_codec_dev(codec))) {
snd_hda_codec_display_power(codec, true);
pm_runtime_enable(hda_codec_dev(codec)); /* it was powered up in snd_hda_codec_new(), now all done */
snd_hda_power_down(codec);
codec->core.registered = 1;
}
}
EXPORT_SYMBOL_GPL(snd_hda_codec_register);
/** * snd_hda_codec_unregister - Unregister specified codec device * @codec: codec device to unregister
*/ void snd_hda_codec_unregister(struct hda_codec *codec)
{
codec->in_freeing = 1; /* * snd_hda_codec_device_new() is used by legacy HDA and ASoC driver. * We can't unregister ASoC device since it will be unregistered in * snd_hdac_ext_bus_device_remove().
*/ if (codec->core.type == HDA_DEV_LEGACY)
snd_hdac_device_unregister(&codec->core);
snd_hda_codec_display_power(codec, false);
/* * In the case of ASoC HD-audio bus, the device refcount is released in * snd_hdac_ext_bus_device_remove() explicitly.
*/ if (codec->core.type == HDA_DEV_LEGACY)
put_device(hda_codec_dev(codec));
}
EXPORT_SYMBOL_GPL(snd_hda_codec_unregister);
/** * snd_hda_codec_new - create a HDA codec * @bus: the bus to assign * @card: card for this codec * @codec_addr: the codec address * @codecp: the pointer to store the generated codec * * Returns 0 if successful, or a negative error code.
*/ int snd_hda_codec_new(struct hda_bus *bus, struct snd_card *card, unsignedint codec_addr, struct hda_codec **codecp)
{ struct hda_codec *codec; int ret;
if (snddev_managed) { /* ASoC features component management instead */
err = snd_device_new(card, SNDRV_DEV_CODEC, codec, &dev_ops); if (err < 0) return err;
}
#ifdef CONFIG_PM /* PM runtime needs to be enabled later after binding codec */ if (codec->core.dev.power.runtime_auto)
pm_runtime_forbid(&codec->core.dev); else /* Keep the usage_count consistent across subsequent probing */
pm_runtime_get_noresume(&codec->core.dev); #endif
/** * snd_hda_codec_update_widgets - Refresh widget caps and pin defaults * @codec: the HDA codec * * Forcibly refresh the all widget caps and the init pin configurations of * the given codec.
*/ int snd_hda_codec_update_widgets(struct hda_codec *codec)
{
hda_nid_t fg; int err;
err = snd_hdac_refresh_widgets(&codec->core); if (err < 0) return err;
/* Assume the function group node does not change, * only the widget nodes may change.
*/
kfree(codec->wcaps);
fg = codec->core.afg ? codec->core.afg : codec->core.mfg;
err = read_widget_caps(codec, fg); if (err < 0) return err;
/** * snd_hda_codec_setup_stream - set up the codec for streaming * @codec: the CODEC to set up * @nid: the NID to set up * @stream_tag: stream tag to pass, it's between 0x1 and 0xf. * @channel_id: channel id to pass, zero based. * @format: stream format.
*/ void snd_hda_codec_setup_stream(struct hda_codec *codec, hda_nid_t nid,
u32 stream_tag, int channel_id, int format)
{ struct hda_codec_driver *driver = hda_codec_to_driver(codec); struct hda_codec *c; struct hda_cvt_setup *p; int type; int i;
if (!nid) return;
codec_dbg(codec, "hda_codec_setup_stream: NID=0x%x, stream=0x%x, channel=%d, format=0x%x\n",
nid, stream_tag, channel_id, format);
p = get_hda_cvt_setup(codec, nid); if (!p) return;
if (driver->ops->stream_pm)
driver->ops->stream_pm(codec, nid, true); if (codec->pcm_format_first)
update_pcm_format(codec, p, nid, format);
update_pcm_stream_id(codec, p, nid, stream_tag, channel_id); if (!codec->pcm_format_first)
update_pcm_format(codec, p, nid, format);
p->active = 1;
p->dirty = 0;
/* make other inactive cvts with the same stream-tag dirty */
type = get_wcaps_type(get_wcaps(codec, nid));
list_for_each_codec(c, codec->bus) {
snd_array_for_each(&c->cvt_setups, i, p) { if (!p->active && p->stream_tag == stream_tag &&
get_wcaps_type(get_wcaps(c, p->nid)) == type)
p->dirty = 1;
}
}
}
EXPORT_SYMBOL_GPL(snd_hda_codec_setup_stream);
/** * __snd_hda_codec_cleanup_stream - clean up the codec for closing * @codec: the CODEC to clean up * @nid: the NID to clean up * @do_now: really clean up the stream instead of clearing the active flag
*/ void __snd_hda_codec_cleanup_stream(struct hda_codec *codec, hda_nid_t nid, int do_now)
{ struct hda_cvt_setup *p;
if (!nid) return;
if (codec->no_sticky_stream)
do_now = 1;
codec_dbg(codec, "hda_codec_cleanup_stream: NID=0x%x\n", nid);
p = get_hda_cvt_setup(codec, nid); if (p) { /* here we just clear the active flag when do_now isn't set; * actual clean-ups will be done later in * purify_inactive_streams() called from snd_hda_codec_prpapre()
*/ if (do_now)
really_cleanup_stream(codec, p); else
p->active = 0;
}
}
EXPORT_SYMBOL_GPL(__snd_hda_codec_cleanup_stream);
if (q->stream_tag || q->channel_id)
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_CHANNEL_STREAMID, 0); if (q->format_id)
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_STREAM_FORMAT, 0
);
memset(q, 0, sizeof(*q));
q->nid = nid; if (driver->ops->stream_pm)
driver->ops->stream_pm(codec, nid, false);
}
/* clean up the all conflicting obsolete streams */ staticvoid purify_inactive_streams(struct hda_codec *codec)
{ struct hda_codec *c; struct hda_cvt_setup *p; int i;
list_for_each_codec(c, codec->bus) {
snd_array_for_each(&c->cvt_setups, i, p) { if (p->dirty)
really_cleanup_stream(c, p);
}
}
}
/* clean up all streams; called from suspend */ staticvoid hda_cleanup_all_streams(struct hda_codec *codec)
{ struct hda_cvt_setup *p; int i;
snd_array_for_each(&codec->cvt_setups, i, p) { if (p->stream_tag)
really_cleanup_stream(codec, p);
}
}
/* * amp access functions
*/
/** * query_amp_caps - query AMP capabilities * @codec: the HD-auio codec * @nid: the NID to query * @direction: either #HDA_INPUT or #HDA_OUTPUT * * Query AMP capabilities for the given widget and direction. * Returns the obtained capability bits. * * When cap bits have been already read, this doesn't read again but * returns the cached value.
*/
u32 query_amp_caps(struct hda_codec *codec, hda_nid_t nid, int direction)
{ if (!(get_wcaps(codec, nid) & AC_WCAP_AMP_OVRD))
nid = codec->core.afg; return snd_hda_param_read(codec, nid,
direction == HDA_OUTPUT ?
AC_PAR_AMP_OUT_CAP : AC_PAR_AMP_IN_CAP);
}
EXPORT_SYMBOL_GPL(query_amp_caps);
/** * snd_hda_check_amp_caps - query AMP capabilities * @codec: the HD-audio codec * @nid: the NID to query * @dir: either #HDA_INPUT or #HDA_OUTPUT * @bits: bit mask to check the result * * Check whether the widget has the given amp capability for the direction.
*/ bool snd_hda_check_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir, unsignedint bits)
{ if (!nid) returnfalse; if (get_wcaps(codec, nid) & (1 << (dir + 1))) if (query_amp_caps(codec, nid, dir) & bits) returntrue; returnfalse;
}
EXPORT_SYMBOL_GPL(snd_hda_check_amp_caps);
/** * snd_hda_override_amp_caps - Override the AMP capabilities * @codec: the CODEC to clean up * @nid: the NID to clean up * @dir: either #HDA_INPUT or #HDA_OUTPUT * @caps: the capability bits to set * * Override the cached AMP caps bits value by the given one. * This function is useful if the driver needs to adjust the AMP ranges, * e.g. limit to 0dB, etc. * * Returns zero if successful or a negative error code.
*/ int snd_hda_override_amp_caps(struct hda_codec *codec, hda_nid_t nid, int dir, unsignedint caps)
{ unsignedint parm;
staticunsignedint encode_amp(struct hda_codec *codec, hda_nid_t nid, int ch, int dir, int idx)
{ unsignedint cmd = snd_hdac_regmap_encode_amp(nid, ch, dir, idx);
/* enable fake mute if no h/w mute but min=mute */ if ((query_amp_caps(codec, nid, dir) &
(AC_AMPCAP_MUTE | AC_AMPCAP_MIN_MUTE)) == AC_AMPCAP_MIN_MUTE)
cmd |= AC_AMP_FAKE_MUTE; return cmd;
}
/** * snd_hda_codec_amp_update - update the AMP mono value * @codec: HD-audio codec * @nid: NID to read the AMP value * @ch: channel to update (0 or 1) * @dir: #HDA_INPUT or #HDA_OUTPUT * @idx: the index value (only for input direction) * @mask: bit mask to set * @val: the bits value to set * * Update the AMP values for the given channel, direction and index.
*/ int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch, int dir, int idx, int mask, int val)
{ unsignedint cmd = encode_amp(codec, nid, ch, dir, idx);
/** * snd_hda_codec_amp_stereo - update the AMP stereo values * @codec: HD-audio codec * @nid: NID to read the AMP value * @direction: #HDA_INPUT or #HDA_OUTPUT * @idx: the index value (only for input direction) * @mask: bit mask to set * @val: the bits value to set * * Update the AMP values like snd_hda_codec_amp_update(), but for a * stereo widget with the same mask and value.
*/ int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid, int direction, int idx, int mask, int val)
{ int ch, ret = 0;
if (snd_BUG_ON(mask & ~0xff))
mask &= 0xff; for (ch = 0; ch < 2; ch++)
ret |= snd_hda_codec_amp_update(codec, nid, ch, direction,
idx, mask, val); return ret;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_amp_stereo);
/** * snd_hda_codec_amp_init - initialize the AMP value * @codec: the HDA codec * @nid: NID to read the AMP value * @ch: channel (left=0 or right=1) * @dir: #HDA_INPUT or #HDA_OUTPUT * @idx: the index value (only for input direction) * @mask: bit mask to set * @val: the bits value to set * * Works like snd_hda_codec_amp_update() but it writes the value only at * the first access. If the amp was already initialized / updated beforehand, * this does nothing.
*/ int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch, int dir, int idx, int mask, int val)
{ unsignedint cmd = encode_amp(codec, nid, ch, dir, idx);
/** * snd_hda_codec_amp_init_stereo - initialize the stereo AMP value * @codec: the HDA codec * @nid: NID to read the AMP value * @dir: #HDA_INPUT or #HDA_OUTPUT * @idx: the index value (only for input direction) * @mask: bit mask to set * @val: the bits value to set * * Call snd_hda_codec_amp_init() for both stereo channels.
*/ int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid, int dir, int idx, int mask, int val)
{ int ch, ret = 0;
if (snd_BUG_ON(mask & ~0xff))
mask &= 0xff; for (ch = 0; ch < 2; ch++)
ret |= snd_hda_codec_amp_init(codec, nid, ch, dir,
idx, mask, val); return ret;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init_stereo);
static u32 get_amp_max_value(struct hda_codec *codec, hda_nid_t nid, int dir, unsignedint ofs)
{
u32 caps = query_amp_caps(codec, nid, dir); /* get num steps */
caps = (caps & AC_AMPCAP_NUM_STEPS) >> AC_AMPCAP_NUM_STEPS_SHIFT; if (ofs < caps)
caps -= ofs; return caps;
}
/** * snd_hda_mixer_amp_volume_info - Info callback for a standard AMP mixer * @kcontrol: referred ctl element * @uinfo: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/ int snd_hda_mixer_amp_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
u16 nid = get_amp_nid(kcontrol);
u8 chs = get_amp_channels(kcontrol); int dir = get_amp_direction(kcontrol); unsignedint ofs = get_amp_offset(kcontrol);
staticinlineunsignedint
read_amp_value(struct hda_codec *codec, hda_nid_t nid, int ch, int dir, int idx, unsignedint ofs)
{ unsignedint val;
val = snd_hda_codec_amp_read(codec, nid, ch, dir, idx);
val &= HDA_AMP_VOLMASK; if (val >= ofs)
val -= ofs; else
val = 0; return val;
}
staticinlineint
update_amp_value(struct hda_codec *codec, hda_nid_t nid, int ch, int dir, int idx, unsignedint ofs, unsignedint val)
{ unsignedint maxval;
if (val > 0)
val += ofs; /* ofs = 0: raw max value */
maxval = get_amp_max_value(codec, nid, dir, 0); if (val > maxval) return -EINVAL; return snd_hda_codec_amp_update(codec, nid, ch, dir, idx,
HDA_AMP_VOLMASK, val);
}
/** * snd_hda_mixer_amp_volume_get - Get callback for a standard AMP mixer volume * @kcontrol: ctl element * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/ int snd_hda_mixer_amp_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
hda_nid_t nid = get_amp_nid(kcontrol); int chs = get_amp_channels(kcontrol); int dir = get_amp_direction(kcontrol); int idx = get_amp_index(kcontrol); unsignedint ofs = get_amp_offset(kcontrol); long *valp = ucontrol->value.integer.value;
/** * snd_hda_mixer_amp_volume_put - Put callback for a standard AMP mixer volume * @kcontrol: ctl element * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/ int snd_hda_mixer_amp_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
hda_nid_t nid = get_amp_nid(kcontrol); int chs = get_amp_channels(kcontrol); int dir = get_amp_direction(kcontrol); int idx = get_amp_index(kcontrol); unsignedint ofs = get_amp_offset(kcontrol); long *valp = ucontrol->value.integer.value; int change = 0; int err;
/** * snd_hda_mixer_amp_tlv - TLV callback for a standard AMP mixer volume * @kcontrol: ctl element * @op_flag: operation flag * @size: byte size of input TLV * @_tlv: TLV data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/ int snd_hda_mixer_amp_tlv(struct snd_kcontrol *kcontrol, int op_flag, unsignedint size, unsignedint __user *_tlv)
{ unsignedint tlv[4];
if (size < 4 * sizeof(unsignedint)) return -ENOMEM;
get_ctl_amp_tlv(kcontrol, tlv); if (copy_to_user(_tlv, tlv, sizeof(tlv))) return -EFAULT; return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_tlv);
/** * snd_hda_set_vmaster_tlv - Set TLV for a virtual master control * @codec: HD-audio codec * @nid: NID of a reference widget * @dir: #HDA_INPUT or #HDA_OUTPUT * @tlv: TLV data to be stored, at least 4 elements * * Set (static) TLV data for a virtual master volume using the AMP caps * obtained from the reference NID. * The volume range is recalculated as if the max volume is 0dB.
*/ void snd_hda_set_vmaster_tlv(struct hda_codec *codec, hda_nid_t nid, int dir, unsignedint *tlv)
{
u32 caps; int nums, step;
/* find a mixer control element with the given name */ staticstruct snd_kcontrol *
find_mixer_ctl(struct hda_codec *codec, constchar *name, int dev, int idx)
{ struct snd_ctl_elem_id id;
memset(&id, 0, sizeof(id));
id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
id.device = dev;
id.index = idx; if (snd_BUG_ON(strlen(name) >= sizeof(id.name))) return NULL;
strscpy(id.name, name); return snd_ctl_find_id(codec->card, &id);
}
/** * snd_hda_find_mixer_ctl - Find a mixer control element with the given name * @codec: HD-audio codec * @name: ctl id name string * * Get the control element with the given id string and IFACE_MIXER.
*/ struct snd_kcontrol *snd_hda_find_mixer_ctl(struct hda_codec *codec, constchar *name)
{ return find_mixer_ctl(codec, name, 0, 0);
}
EXPORT_SYMBOL_GPL(snd_hda_find_mixer_ctl);
staticint find_empty_mixer_ctl_idx(struct hda_codec *codec, constchar *name, int start_idx)
{ int i, idx; /* 16 ctlrs should be large enough */ for (i = 0, idx = start_idx; i < 16; i++, idx++) { if (!find_mixer_ctl(codec, name, 0, idx)) return idx;
} return -EBUSY;
}
/** * snd_hda_ctl_add - Add a control element and assign to the codec * @codec: HD-audio codec * @nid: corresponding NID (optional) * @kctl: the control element to assign * * Add the given control element to an array inside the codec instance. * All control elements belonging to a codec are supposed to be added * by this function so that a proper clean-up works at the free or * reconfiguration time. * * If non-zero @nid is passed, the NID is assigned to the control element. * The assignment is shown in the codec proc file. * * snd_hda_ctl_add() checks the control subdev id field whether * #HDA_SUBDEV_NID_FLAG bit is set. If set (and @nid is zero), the lower * bits value is taken as the NID to assign. The #HDA_NID_ITEM_AMP bit * specifies if kctl->private_value is a HDA amplifier value.
*/ int snd_hda_ctl_add(struct hda_codec *codec, hda_nid_t nid, struct snd_kcontrol *kctl)
{ int err; unsignedshort flags = 0; struct hda_nid_item *item;
if (kctl->id.subdevice & HDA_SUBDEV_AMP_FLAG) {
flags |= HDA_NID_ITEM_AMP; if (nid == 0)
nid = get_amp_nid_(kctl->private_value);
} if ((kctl->id.subdevice & HDA_SUBDEV_NID_FLAG) != 0 && nid == 0)
nid = kctl->id.subdevice & 0xffff; if (kctl->id.subdevice & (HDA_SUBDEV_NID_FLAG|HDA_SUBDEV_AMP_FLAG))
kctl->id.subdevice = 0;
err = snd_ctl_add(codec->card, kctl); if (err < 0) return err;
item = snd_array_new(&codec->mixers); if (!item) return -ENOMEM;
item->kctl = kctl;
item->nid = nid;
item->flags = flags; return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_ctl_add);
/** * snd_hda_ctls_clear - Clear all controls assigned to the given codec * @codec: HD-audio codec
*/ void snd_hda_ctls_clear(struct hda_codec *codec)
{ int i; struct hda_nid_item *items = codec->mixers.list;
for (i = 0; i < codec->mixers.used; i++)
snd_ctl_remove(codec->card, items[i].kctl);
snd_array_free(&codec->mixers);
snd_array_free(&codec->nids);
}
/** * snd_hda_lock_devices - pseudo device locking * @bus: the BUS * * toggle card->shutdown to allow/disallow the device access (as a hack)
*/ int snd_hda_lock_devices(struct hda_bus *bus)
{ struct snd_card *card = bus->card; struct hda_codec *codec;
spin_lock(&card->files_lock); if (card->shutdown) goto err_unlock;
card->shutdown = 1; if (!list_empty(&card->ctl_files)) goto err_clear;
/** * snd_hda_codec_reset - Clear all objects assigned to the codec * @codec: HD-audio codec * * This frees the all PCM and control elements assigned to the codec, and * clears the caches and restores the pin default configurations. * * When a device is being used, it returns -EBSY. If successfully freed, * returns zero.
*/ int snd_hda_codec_reset(struct hda_codec *codec)
{ struct hda_bus *bus = codec->bus;
if (snd_hda_lock_devices(bus) < 0) return -EBUSY;
/* OK, let it free */
device_release_driver(hda_codec_dev(codec));
/* allow device access again */
snd_hda_unlock_devices(bus); return 0;
}
/* apply the function to all matching follower ctls in the mixer list */ staticint map_followers(struct hda_codec *codec, constchar * const *followers, constchar *suffix, map_follower_func_t func, void *data)
{ struct hda_nid_item *items; constchar * const *s; int i, err;
items = codec->mixers.list; for (i = 0; i < codec->mixers.used; i++) { struct snd_kcontrol *sctl = items[i].kctl; if (!sctl || sctl->id.iface != SNDRV_CTL_ELEM_IFACE_MIXER) continue; for (s = followers; *s; s++) { char tmpname[sizeof(sctl->id.name)]; constchar *name = *s; if (suffix) {
snprintf(tmpname, sizeof(tmpname), "%s %s",
name, suffix);
name = tmpname;
} if (!strcmp(sctl->id.name, name)) {
err = func(codec, data, sctl); if (err) return err; break;
}
}
} return 0;
}
/** * __snd_hda_add_vmaster - create a virtual master control and add followers * @codec: HD-audio codec * @name: vmaster control name * @tlv: TLV data (optional) * @followers: follower control names (optional) * @suffix: suffix string to each follower name (optional) * @init_follower_vol: initialize followers to unmute/0dB * @access: kcontrol access rights * @ctl_ret: store the vmaster kcontrol in return * * Create a virtual master control with the given name. The TLV data * must be either NULL or a valid data. * * @followers is a NULL-terminated array of strings, each of which is a * follower control name. All controls with these names are assigned to * the new virtual master control. * * This function returns zero if successful or a negative error code.
*/ int __snd_hda_add_vmaster(struct hda_codec *codec, char *name, unsignedint *tlv, constchar * const *followers, constchar *suffix, bool init_follower_vol, unsignedint access, struct snd_kcontrol **ctl_ret)
{ struct snd_kcontrol *kctl; int err;
if (ctl_ret)
*ctl_ret = NULL;
err = map_followers(codec, followers, suffix, check_follower_present, NULL); if (err != 1) {
codec_dbg(codec, "No follower found for %s\n", name); return 0;
}
kctl = snd_ctl_make_virtual_master(name, tlv); if (!kctl) return -ENOMEM;
kctl->vd[0].access |= access;
err = snd_hda_ctl_add(codec, 0, kctl); if (err < 0) return err;
if (ctl_ret)
*ctl_ret = kctl; return 0;
}
EXPORT_SYMBOL_GPL(__snd_hda_add_vmaster);
/* meta hook to call each driver's vmaster hook */ staticvoid vmaster_hook(void *private_data, int enabled)
{ struct hda_vmaster_mute_hook *hook = private_data;
hook->hook(hook->codec, enabled);
}
/** * snd_hda_add_vmaster_hook - Add a vmaster hw specific hook * @codec: the HDA codec * @hook: the vmaster hook object * * Add a hw specific hook (like EAPD) with the given vmaster switch kctl.
*/ int snd_hda_add_vmaster_hook(struct hda_codec *codec, struct hda_vmaster_mute_hook *hook)
{ if (!hook->hook || !hook->sw_kctl) return 0;
hook->codec = codec;
snd_ctl_add_vmaster_hook(hook->sw_kctl, vmaster_hook, hook); return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_add_vmaster_hook);
/** * snd_hda_sync_vmaster_hook - Sync vmaster hook * @hook: the vmaster hook * * Call the hook with the current value for synchronization. * Should be called in init callback.
*/ void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook)
{ if (!hook->hook || !hook->codec) return; /* don't call vmaster hook in the destructor since it might have * been already destroyed
*/ if (hook->codec->bus->shutdown) return;
snd_ctl_sync_vmaster_hook(hook->sw_kctl);
}
EXPORT_SYMBOL_GPL(snd_hda_sync_vmaster_hook);
/** * snd_hda_mixer_amp_switch_info - Info callback for a standard AMP mixer switch * @kcontrol: referred ctl element * @uinfo: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/ int snd_hda_mixer_amp_switch_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{ int chs = get_amp_channels(kcontrol);
/** * snd_hda_mixer_amp_switch_get - Get callback for a standard AMP mixer switch * @kcontrol: ctl element * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/ int snd_hda_mixer_amp_switch_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
hda_nid_t nid = get_amp_nid(kcontrol); int chs = get_amp_channels(kcontrol); int dir = get_amp_direction(kcontrol); int idx = get_amp_index(kcontrol); long *valp = ucontrol->value.integer.value;
/** * snd_hda_mixer_amp_switch_put - Put callback for a standard AMP mixer switch * @kcontrol: ctl element * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros.
*/ int snd_hda_mixer_amp_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{ struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
hda_nid_t nid = get_amp_nid(kcontrol); int chs = get_amp_channels(kcontrol); int dir = get_amp_direction(kcontrol); int idx = get_amp_index(kcontrol); long *valp = ucontrol->value.integer.value; int change = 0;
/* convert from SPDIF status bits to HDA SPDIF bits * bit 0 (DigEn) is always set zero (to be filled later)
*/ staticunsignedshort convert_from_spdif_status(unsignedint sbits)
{ unsignedshort val = 0;
if (sbits & IEC958_AES0_PROFESSIONAL)
val |= AC_DIG1_PROFESSIONAL; if (sbits & IEC958_AES0_NONAUDIO)
val |= AC_DIG1_NONAUDIO; if (sbits & IEC958_AES0_PROFESSIONAL) { if ((sbits & IEC958_AES0_PRO_EMPHASIS) ==
IEC958_AES0_PRO_EMPHASIS_5015)
val |= AC_DIG1_EMPHASIS;
} else { if ((sbits & IEC958_AES0_CON_EMPHASIS) ==
IEC958_AES0_CON_EMPHASIS_5015)
val |= AC_DIG1_EMPHASIS; if (!(sbits & IEC958_AES0_CON_NOT_COPYRIGHT))
val |= AC_DIG1_COPYRIGHT; if (sbits & (IEC958_AES1_CON_ORIGINAL << 8))
val |= AC_DIG1_LEVEL;
val |= sbits & (IEC958_AES1_CON_CATEGORY << 8);
} return val;
}
/* convert to SPDIF status bits from HDA SPDIF bits
*/ staticunsignedint convert_to_spdif_status(unsignedshort val)
{ unsignedint sbits = 0;
if (val & AC_DIG1_NONAUDIO)
sbits |= IEC958_AES0_NONAUDIO; if (val & AC_DIG1_PROFESSIONAL)
sbits |= IEC958_AES0_PROFESSIONAL; if (sbits & IEC958_AES0_PROFESSIONAL) { if (val & AC_DIG1_EMPHASIS)
sbits |= IEC958_AES0_PRO_EMPHASIS_5015;
} else { if (val & AC_DIG1_EMPHASIS)
sbits |= IEC958_AES0_CON_EMPHASIS_5015; if (!(val & AC_DIG1_COPYRIGHT))
sbits |= IEC958_AES0_CON_NOT_COPYRIGHT; if (val & AC_DIG1_LEVEL)
sbits |= (IEC958_AES1_CON_ORIGINAL << 8);
sbits |= val & (0x7f << 8);
} return sbits;
}
/* set digital convert verbs both for the given NID and its followers */ staticvoid set_dig_out(struct hda_codec *codec, hda_nid_t nid, int mask, int val)
{ const hda_nid_t *d;
snd_hdac_regmap_update(&codec->core, nid, AC_VERB_SET_DIGI_CONVERT_1,
mask, val);
d = codec->follower_dig_outs; if (!d) return; for (; *d; d++)
snd_hdac_regmap_update(&codec->core, *d,
AC_VERB_SET_DIGI_CONVERT_1, mask, val);
}
staticinlinevoid set_dig_out_convert(struct hda_codec *codec, hda_nid_t nid, int dig1, int dig2)
{ unsignedint mask = 0; unsignedint val = 0;
if (dig1 != -1) {
mask |= 0xff;
val = dig1;
} if (dig2 != -1) {
mask |= 0xff00;
val |= dig2 << 8;
}
set_dig_out(codec, nid, mask, val);
}
/** * snd_hda_create_dig_out_ctls - create Output SPDIF-related controls * @codec: the HDA codec * @associated_nid: NID that new ctls associated with * @cvt_nid: converter NID * @type: HDA_PCM_TYPE_* * Creates controls related with the digital output. * Called from each codec driver supporting the digital out. * * Returns 0 if successful, or a negative error code.
*/ int snd_hda_create_dig_out_ctls(struct hda_codec *codec,
hda_nid_t associated_nid,
hda_nid_t cvt_nid, int type)
{ int err; struct snd_kcontrol *kctl; conststruct snd_kcontrol_new *dig_mix; int idx = 0; int val = 0; constint spdif_index = 16; struct hda_spdif_out *spdif; struct hda_bus *bus = codec->bus;
if (bus->primary_dig_out_type == HDA_PCM_TYPE_HDMI &&
type == HDA_PCM_TYPE_SPDIF) {
idx = spdif_index;
} elseif (bus->primary_dig_out_type == HDA_PCM_TYPE_SPDIF &&
type == HDA_PCM_TYPE_HDMI) { /* suppose a single SPDIF device */ for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) { struct snd_ctl_elem_id id;
kctl = find_mixer_ctl(codec, dig_mix->name, 0, 0); if (!kctl) break;
id = kctl->id;
id.index = spdif_index;
err = snd_ctl_rename_id(codec->card, &kctl->id, &id); if (err < 0) return err;
}
bus->primary_dig_out_type = HDA_PCM_TYPE_HDMI;
} if (!bus->primary_dig_out_type)
bus->primary_dig_out_type = type;
/** * snd_hda_spdif_out_of_nid - get the hda_spdif_out entry from the given NID * @codec: the HDA codec * @nid: widget NID * * call within spdif_mutex lock
*/ struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec,
hda_nid_t nid)
{ struct hda_spdif_out *spdif; int i;
snd_array_for_each(&codec->spdif_out, i, spdif) { if (spdif->nid == nid) return spdif;
} return NULL;
}
EXPORT_SYMBOL_GPL(snd_hda_spdif_out_of_nid);
/** * snd_hda_spdif_ctls_unassign - Unassign the given SPDIF ctl * @codec: the HDA codec * @idx: the SPDIF ctl index * * Unassign the widget from the given SPDIF control.
*/ void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx)
{ struct hda_spdif_out *spdif;
/** * snd_hda_spdif_ctls_assign - Assign the SPDIF controls to the given NID * @codec: the HDA codec * @idx: the SPDIF ctl idx * @nid: widget NID * * Assign the widget to the SPDIF control with the given index.
*/ void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid)
{ struct hda_spdif_out *spdif; unsignedshort val;
if (WARN_ON(codec->spdif_out.used <= idx)) return;
mutex_lock(&codec->spdif_mutex);
spdif = snd_array_elem(&codec->spdif_out, idx); if (spdif->nid != nid) {
spdif->nid = nid;
val = spdif->ctls;
set_spdif_ctls(codec, nid, val & 0xff, (val >> 8) & 0xff);
}
mutex_unlock(&codec->spdif_mutex);
}
EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_assign);
/** * snd_hda_create_spdif_in_ctls - create Input SPDIF-related controls * @codec: the HDA codec * @nid: audio in widget NID * * Creates controls related with the SPDIF input. * Called from each codec driver supporting the SPDIF in. * * Returns 0 if successful, or a negative error code.
*/ int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid)
{ int err; struct snd_kcontrol *kctl; conststruct snd_kcontrol_new *dig_mix; int idx;
/** * snd_hda_codec_set_power_to_all - Set the power state to all widgets * @codec: the HDA codec * @fg: function group (not used now) * @power_state: the power state to set (AC_PWRST_*) * * Set the given power state to all widgets that have the power control. * If the codec has power_filter set, it evaluates the power state and * filter out if it's unchanged as D3.
*/ void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg, unsignedint power_state)
{
hda_nid_t nid;
for_each_hda_codec_node(nid, codec) { unsignedint wcaps = get_wcaps(codec, nid); unsignedint state = power_state; if (!(wcaps & AC_WCAP_POWER)) continue; if (codec->power_filter) {
state = codec->power_filter(codec, nid, power_state); if (state != power_state && power_state == AC_PWRST_D3) continue;
}
snd_hda_codec_write(codec, nid, 0, AC_VERB_SET_POWER_STATE,
state);
}
}
EXPORT_SYMBOL_GPL(snd_hda_codec_set_power_to_all);
/** * snd_hda_codec_eapd_power_filter - A power filter callback for EAPD * @codec: the HDA codec * @nid: widget NID * @power_state: power state to evalue * * Don't power down the widget if it controls eapd and EAPD_BTLENABLE is set. * This can be used a codec power_filter callback.
*/ unsignedint snd_hda_codec_eapd_power_filter(struct hda_codec *codec,
hda_nid_t nid, unsignedint power_state)
{ if (nid == codec->core.afg || nid == codec->core.mfg) return power_state; if (power_state == AC_PWRST_D3 &&
get_wcaps_type(get_wcaps(codec, nid)) == AC_WID_PIN &&
(snd_hda_query_pin_caps(codec, nid) & AC_PINCAP_EAPD)) { int eapd = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_EAPD_BTLENABLE, 0); if (eapd & 0x02) return AC_PWRST_D0;
} return power_state;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_eapd_power_filter);
/* * set power state of the codec, and return the power state
*/ staticunsignedint hda_set_power_state(struct hda_codec *codec, unsignedint power_state)
{ struct hda_codec_driver *driver = hda_codec_to_driver(codec);
hda_nid_t fg = codec->core.afg ? codec->core.afg : codec->core.mfg; int count; unsignedint state; int flags = 0;
/* this delay seems necessary to avoid click noise at power-down */ if (power_state == AC_PWRST_D3) { if (codec->depop_delay < 0)
msleep(codec_has_epss(codec) ? 10 : 100); elseif (codec->depop_delay > 0)
msleep(codec->depop_delay);
flags = HDA_RW_NO_RESPONSE_FALLBACK;
}
/* repeat power states setting at most 10 times*/ for (count = 0; count < 10; count++) { /* might be called before binding to driver, too */ if (driver && driver->ops && driver->ops->set_power_state)
driver->ops->set_power_state(codec, fg, power_state); else {
state = power_state; if (codec->power_filter)
state = codec->power_filter(codec, fg, state); if (state == power_state || power_state != AC_PWRST_D3)
snd_hda_codec_read(codec, fg, flags,
AC_VERB_SET_POWER_STATE,
state);
snd_hda_codec_set_power_to_all(codec, fg, power_state);
}
state = snd_hda_sync_power_state(codec, fg, power_state); if (!(state & AC_PWRST_ERROR)) break;
}
return state;
}
/* sync power states of all widgets; * this is called at the end of codec parsing
*/ staticvoid sync_power_up_states(struct hda_codec *codec)
{
hda_nid_t nid;
/* don't care if no filter is used */ if (!codec->power_filter) return;
/* update the power on/off account with the current jiffies */ staticvoid update_power_acct(struct hda_codec *codec, bool on)
{ unsignedlong delta = jiffies - codec->power_jiffies;
/* * call suspend and power-down; used both from PM and power-save * this function returns the power state in the end
*/ staticunsignedint hda_call_codec_suspend(struct hda_codec *codec)
{ struct hda_codec_driver *driver = hda_codec_to_driver(codec); unsignedint state;
snd_hdac_enter_pm(&codec->core); if (driver->ops->suspend)
driver->ops->suspend(codec); if (!codec->no_stream_clean_at_suspend)
hda_cleanup_all_streams(codec);
state = hda_set_power_state(codec, AC_PWRST_D3);
update_power_acct(codec, true);
snd_hdac_leave_pm(&codec->core); return state;
}
/* * kick up codec; used both from PM and power-save
*/ staticvoid hda_call_codec_resume(struct hda_codec *codec)
{ struct hda_codec_driver *driver = hda_codec_to_driver(codec);
snd_hdac_enter_pm(&codec->core); if (codec->core.regmap)
regcache_mark_dirty(codec->core.regmap);
/* If no other pm-functions are called between prepare() and complete() */ if (dev->power.power_state.event == PM_EVENT_SUSPEND)
dev->power.power_state = PMSG_RESUME;
if (pm_runtime_suspended(dev) && (codec->jackpoll_interval ||
hda_codec_need_resume(codec) || codec->forced_resume))
pm_request_resume(dev);
}
/* suspend the codec at shutdown; called from driver's shutdown callback */ void snd_hda_codec_shutdown(struct hda_codec *codec)
{ struct hda_pcm *cpcm;
/* Skip the shutdown if codec is not registered */ if (!codec->core.registered) return;
int snd_hda_codec_build_controls(struct hda_codec *codec)
{ struct hda_codec_driver *driver = hda_codec_to_driver(codec); int err;
hda_exec_init_verbs(codec); /* continue to initialize... */
err = snd_hda_codec_init(codec); if (err < 0) return err;
if (driver->ops->build_controls) {
err = driver->ops->build_controls(codec); if (err < 0) return err;
}
/* we create chmaps here instead of build_pcms */
err = add_std_chmaps(codec); if (err < 0) return err;
snd_hda_jack_report_sync(codec); /* call at the last init point */ if (codec->jackpoll_interval)
schedule_delayed_work(&codec->jackpoll_work,
codec->jackpoll_interval);
staticint set_pcm_default_values(struct hda_codec *codec, struct hda_pcm_stream *info)
{ int err;
/* query support PCM information from the given NID */ if (info->nid && (!info->rates || !info->formats)) {
err = snd_hda_query_supported_pcm(codec, info->nid,
info->rates ? NULL : &info->rates,
info->formats ? NULL : &info->formats,
info->subformats ? NULL : &info->subformats,
info->maxbps ? NULL : &info->maxbps); if (err < 0) return err;
} if (info->ops.open == NULL)
info->ops.open = hda_pcm_default_open_close; if (info->ops.close == NULL)
info->ops.close = hda_pcm_default_open_close; if (info->ops.prepare == NULL) { if (snd_BUG_ON(!info->nid)) return -EINVAL;
info->ops.prepare = hda_pcm_default_prepare;
} if (info->ops.cleanup == NULL) { if (snd_BUG_ON(!info->nid)) return -EINVAL;
info->ops.cleanup = hda_pcm_default_cleanup;
} return 0;
}
/* * codec prepare/cleanup entries
*/ /** * snd_hda_codec_prepare - Prepare a stream * @codec: the HDA codec * @hinfo: PCM information * @stream: stream tag to assign * @format: format id to assign * @substream: PCM substream to assign * * Calls the prepare callback set by the codec with the given arguments. * Clean up the inactive streams when successful.
*/ int snd_hda_codec_prepare(struct hda_codec *codec, struct hda_pcm_stream *hinfo, unsignedint stream, unsignedint format, struct snd_pcm_substream *substream)
{ int ret;
mutex_lock(&codec->bus->prepare_mutex); if (hinfo->ops.prepare)
ret = hinfo->ops.prepare(hinfo, codec, stream, format,
substream); else
ret = -ENODEV; if (ret >= 0)
purify_inactive_streams(codec);
mutex_unlock(&codec->bus->prepare_mutex); return ret;
}
EXPORT_SYMBOL_GPL(snd_hda_codec_prepare);
/** * snd_hda_codec_cleanup - Clean up stream resources * @codec: the HDA codec * @hinfo: PCM information * @substream: PCM substream * * Calls the cleanup callback set by the codec with the given arguments.
*/ void snd_hda_codec_cleanup(struct hda_codec *codec, struct hda_pcm_stream *hinfo, struct snd_pcm_substream *substream)
{
mutex_lock(&codec->bus->prepare_mutex); if (hinfo->ops.cleanup)
hinfo->ops.cleanup(hinfo, codec, substream);
mutex_unlock(&codec->bus->prepare_mutex);
}
EXPORT_SYMBOL_GPL(snd_hda_codec_cleanup);
/* * get the empty PCM device number to assign
*/ staticint get_empty_pcm_device(struct hda_bus *bus, unsignedint type)
{ /* audio device indices; not linear to keep compatibility */ /* assigned to static slots up to dev#10; if more needed, assign * the later slot dynamically (when CONFIG_SND_DYNAMIC_MINORS=y)
*/ staticconstint audio_idx[HDA_PCM_NTYPES][5] = {
[HDA_PCM_TYPE_AUDIO] = { 0, 2, 4, 5, -1 },
[HDA_PCM_TYPE_SPDIF] = { 1, -1 },
[HDA_PCM_TYPE_HDMI] = { 3, 7, 8, 9, -1 },
[HDA_PCM_TYPE_MODEM] = { 6, -1 },
}; int i;
if (type >= HDA_PCM_NTYPES) {
dev_err(bus->card->dev, "Invalid PCM type %d\n", type); return -EINVAL;
}
for (i = 0; audio_idx[type][i] >= 0; i++) { #ifndef CONFIG_SND_DYNAMIC_MINORS if (audio_idx[type][i] >= 8) break; #endif if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits)) return audio_idx[type][i];
}
#ifdef CONFIG_SND_DYNAMIC_MINORS /* non-fixed slots starting from 10 */ for (i = 10; i < 32; i++) { if (!test_and_set_bit(i, bus->pcm_dev_bits)) return i;
} #endif
dev_warn(bus->card->dev, "Too many %s devices\n",
snd_hda_pcm_type_name[type]); #ifndef CONFIG_SND_DYNAMIC_MINORS
dev_warn(bus->card->dev, "Consider building the kernel with CONFIG_SND_DYNAMIC_MINORS=y\n"); #endif return -EAGAIN;
}
/* call build_pcms ops of the given codec and set up the default parameters */ int snd_hda_codec_parse_pcms(struct hda_codec *codec)
{ struct hda_codec_driver *driver = hda_codec_to_driver(codec); struct hda_pcm *cpcm; int err;
if (!list_empty(&codec->pcm_list_head)) return 0; /* already parsed */
/* assign all PCMs of the given codec */ int snd_hda_codec_build_pcms(struct hda_codec *codec)
{ struct hda_bus *bus = codec->bus; struct hda_pcm *cpcm; int dev, err;
err = snd_hda_codec_parse_pcms(codec); if (err < 0) return err;
/* attach a new PCM streams */
list_for_each_entry(cpcm, &codec->pcm_list_head, list) { if (cpcm->pcm) continue; /* already attached */ if (!cpcm->stream[0].substreams && !cpcm->stream[1].substreams) continue; /* no substreams assigned */
dev = get_empty_pcm_device(bus, cpcm->pcm_type); if (dev < 0) {
cpcm->device = SNDRV_PCM_INVALID_DEVICE; continue; /* no fatal error */
}
cpcm->device = dev;
err = snd_hda_attach_pcm_stream(bus, codec, cpcm); if (err < 0) {
codec_err(codec, "cannot attach PCM stream %d for codec #%d\n",
dev, codec->core.addr); continue; /* no fatal error */
}
}
return 0;
}
/** * snd_hda_add_new_ctls - create controls from the array * @codec: the HDA codec * @knew: the array of struct snd_kcontrol_new * * This helper function creates and add new controls in the given array. * The array must be terminated with an empty entry as terminator. * * Returns 0 if successful, or a negative error code.
*/ int snd_hda_add_new_ctls(struct hda_codec *codec, conststruct snd_kcontrol_new *knew)
{ int err;
for (; knew->name; knew++) { struct snd_kcontrol *kctl; int addr = 0, idx = 0; if (knew->iface == (__force snd_ctl_elem_iface_t)-1) continue; /* skip this codec private value */ for (;;) {
kctl = snd_ctl_new1(knew, codec); if (!kctl) return -ENOMEM; /* Do not use the id.device field for MIXER elements. * This field is for real device numbers (like PCM) but codecs * are hidden components from the user space view (unrelated * to the mixer element identification).
*/ if (addr > 0 && codec->ctl_dev_id)
kctl->id.device = addr; if (idx > 0)
kctl->id.index = idx;
err = snd_hda_ctl_add(codec, 0, kctl); if (!err) break; /* try first with another device index corresponding to * the codec addr; if it still fails (or it's the * primary codec), then try another control index
*/ if (!addr && codec->core.addr) {
addr = codec->core.addr; if (!codec->ctl_dev_id)
idx += 10 * addr;
} elseif (!idx && !knew->index) {
idx = find_empty_mixer_ctl_idx(codec,
knew->name, 0); if (idx <= 0) return err;
} else return err;
}
} return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_add_new_ctls);
if (delay == 0 && codec->auto_runtime_pm)
delay = 3000;
if (delay > 0) {
pm_runtime_set_autosuspend_delay(dev, delay);
pm_runtime_use_autosuspend(dev);
pm_runtime_allow(dev); if (!pm_runtime_suspended(dev))
pm_runtime_mark_last_busy(dev);
} else {
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_forbid(dev);
}
}
EXPORT_SYMBOL_GPL(snd_hda_codec_set_power_save);
/** * snd_hda_set_power_save - reprogram autosuspend for the given delay * @bus: HD-audio bus * @delay: autosuspend delay in msec, 0 = off * * Synchronize the runtime PM autosuspend state from the power_save option.
*/ void snd_hda_set_power_save(struct hda_bus *bus, int delay)
{ struct hda_codec *c;
/** * snd_hda_check_amp_list_power - Check the amp list and update the power * @codec: HD-audio codec * @check: the object containing an AMP list and the status * @nid: NID to check / update * * Check whether the given NID is in the amp list. If it's in the list, * check the current AMP status, and update the power-status according * to the mute status. * * This function is supposed to be set or called from the check_power_status * patch ops.
*/ int snd_hda_check_amp_list_power(struct hda_codec *codec, struct hda_loopback_check *check,
hda_nid_t nid)
{ conststruct hda_amp_list *p; int ch, v;
if (!check->amplist) return 0; for (p = check->amplist; p->nid; p++) { if (p->nid == nid) break;
} if (!p->nid) return 0; /* nothing changed */
for (p = check->amplist; p->nid; p++) { for (ch = 0; ch < 2; ch++) {
v = snd_hda_codec_amp_read(codec, p->nid, ch, p->dir,
p->idx); if (!(v & HDA_AMP_MUTE) && v > 0) { if (!check->power_on) {
check->power_on = 1;
snd_hda_power_up_pm(codec);
} return 1;
}
}
} if (check->power_on) {
check->power_on = 0;
snd_hda_power_down_pm(codec);
} return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_check_amp_list_power);
/* * input MUX helper
*/
/** * snd_hda_input_mux_info - Info callback helper for the input-mux enum * @imux: imux helper object * @uinfo: pointer to get/store the data
*/ int snd_hda_input_mux_info(conststruct hda_input_mux *imux, struct snd_ctl_elem_info *uinfo)
{ unsignedint index;
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 1;
uinfo->value.enumerated.items = imux->num_items; if (!imux->num_items) return 0;
index = uinfo->value.enumerated.item; if (index >= imux->num_items)
index = imux->num_items - 1;
strscpy(uinfo->value.enumerated.name, imux->items[index].label); return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_input_mux_info);
/** * snd_hda_input_mux_put - Put callback helper for the input-mux enum * @codec: the HDA codec * @imux: imux helper object * @ucontrol: pointer to get/store the data * @nid: input mux NID * @cur_val: pointer to get/store the current imux value
*/ int snd_hda_input_mux_put(struct hda_codec *codec, conststruct hda_input_mux *imux, struct snd_ctl_elem_value *ucontrol,
hda_nid_t nid, unsignedint *cur_val)
{ unsignedint idx;
/** * snd_hda_enum_helper_info - Helper for simple enum ctls * @kcontrol: ctl element * @uinfo: pointer to get/store the data * @num_items: number of enum items * @texts: enum item string array * * process kcontrol info callback of a simple string enum array * when @num_items is 0 or @texts is NULL, assume a boolean enum array
*/ int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo, int num_items, constchar * const *texts)
{ staticconstchar * const texts_default[] = { "Disabled", "Enabled"
};
spdif = snd_hda_spdif_out_of_nid(codec, nid); /* Add sanity check to pass klockwork check. * This should never happen.
*/ if (WARN_ON(spdif == NULL)) return;
/** * snd_hda_multi_out_dig_open - open the digital out in the exclusive mode * @codec: the HDA codec * @mout: hda_multi_out object
*/ int snd_hda_multi_out_dig_open(struct hda_codec *codec, struct hda_multi_out *mout)
{
mutex_lock(&codec->spdif_mutex); if (mout->dig_out_used == HDA_DIG_ANALOG_DUP) /* already opened as analog dup; reset it once */
cleanup_dig_out_stream(codec, mout->dig_out_nid);
mout->dig_out_used = HDA_DIG_EXCLUSIVE;
mutex_unlock(&codec->spdif_mutex); return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_open);
/** * snd_hda_multi_out_dig_prepare - prepare the digital out stream * @codec: the HDA codec * @mout: hda_multi_out object * @stream_tag: stream tag to assign * @format: format id to assign * @substream: PCM substream to assign
*/ int snd_hda_multi_out_dig_prepare(struct hda_codec *codec, struct hda_multi_out *mout, unsignedint stream_tag, unsignedint format, struct snd_pcm_substream *substream)
{
mutex_lock(&codec->spdif_mutex);
setup_dig_out_stream(codec, mout->dig_out_nid, stream_tag, format);
mutex_unlock(&codec->spdif_mutex); return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_prepare);
/** * snd_hda_multi_out_dig_cleanup - clean-up the digital out stream * @codec: the HDA codec * @mout: hda_multi_out object
*/ int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec, struct hda_multi_out *mout)
{
mutex_lock(&codec->spdif_mutex);
cleanup_dig_out_stream(codec, mout->dig_out_nid);
mutex_unlock(&codec->spdif_mutex); return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_cleanup);
/** * snd_hda_multi_out_dig_close - release the digital out stream * @codec: the HDA codec * @mout: hda_multi_out object
*/ int snd_hda_multi_out_dig_close(struct hda_codec *codec, struct hda_multi_out *mout)
{
mutex_lock(&codec->spdif_mutex);
mout->dig_out_used = 0;
mutex_unlock(&codec->spdif_mutex); return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_close);
/** * snd_hda_multi_out_analog_open - open analog outputs * @codec: the HDA codec * @mout: hda_multi_out object * @substream: PCM substream to assign * @hinfo: PCM information to assign * * Open analog outputs and set up the hw-constraints. * If the digital outputs can be opened as follower, open the digital * outputs, too.
*/ int snd_hda_multi_out_analog_open(struct hda_codec *codec, struct hda_multi_out *mout, struct snd_pcm_substream *substream, struct hda_pcm_stream *hinfo)
{ struct snd_pcm_runtime *runtime = substream->runtime;
runtime->hw.channels_max = mout->max_channels; if (mout->dig_out_nid) { if (!mout->analog_rates) {
mout->analog_rates = hinfo->rates;
mout->analog_formats = hinfo->formats;
mout->analog_maxbps = hinfo->maxbps;
} else {
runtime->hw.rates = mout->analog_rates;
runtime->hw.formats = mout->analog_formats;
hinfo->maxbps = mout->analog_maxbps;
} if (!mout->spdif_rates) {
snd_hda_query_supported_pcm(codec, mout->dig_out_nid,
&mout->spdif_rates,
&mout->spdif_formats,
NULL,
&mout->spdif_maxbps);
}
mutex_lock(&codec->spdif_mutex); if (mout->share_spdif) { if ((runtime->hw.rates & mout->spdif_rates) &&
(runtime->hw.formats & mout->spdif_formats)) {
runtime->hw.rates &= mout->spdif_rates;
runtime->hw.formats &= mout->spdif_formats; if (mout->spdif_maxbps < hinfo->maxbps)
hinfo->maxbps = mout->spdif_maxbps;
} else {
mout->share_spdif = 0; /* FIXME: need notify? */
}
}
mutex_unlock(&codec->spdif_mutex);
} return snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS, 2);
}
EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_open);
/** * snd_hda_multi_out_analog_prepare - Preapre the analog outputs. * @codec: the HDA codec * @mout: hda_multi_out object * @stream_tag: stream tag to assign * @format: format id to assign * @substream: PCM substream to assign * * Set up the i/o for analog out. * When the digital out is available, copy the front out to digital out, too.
*/ int snd_hda_multi_out_analog_prepare(struct hda_codec *codec, struct hda_multi_out *mout, unsignedint stream_tag, unsignedint format, struct snd_pcm_substream *substream)
{ const hda_nid_t *nids = mout->dac_nids; int chs = substream->runtime->channels; struct hda_spdif_out *spdif; int i;
/* front */
snd_hda_codec_setup_stream(codec, nids[HDA_FRONT], stream_tag,
0, format); if (!mout->no_share_stream &&
mout->hp_nid && mout->hp_nid != nids[HDA_FRONT]) /* headphone out will just decode front left/right (stereo) */
snd_hda_codec_setup_stream(codec, mout->hp_nid, stream_tag,
0, format); /* extra outputs copied from front */ for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++) if (!mout->no_share_stream && mout->hp_out_nid[i])
snd_hda_codec_setup_stream(codec,
mout->hp_out_nid[i],
stream_tag, 0, format);
/* surrounds */ for (i = 1; i < mout->num_dacs; i++) { if (chs >= (i + 1) * 2) /* independent out */
snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
i * 2, format); elseif (!mout->no_share_stream) /* copy front */
snd_hda_codec_setup_stream(codec, nids[i], stream_tag,
0, format);
}
/* extra surrounds */ for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++) { int ch = 0; if (!mout->extra_out_nid[i]) break; if (chs >= (i + 1) * 2)
ch = i * 2; elseif (!mout->no_share_stream) break;
snd_hda_codec_setup_stream(codec, mout->extra_out_nid[i],
stream_tag, ch, format);
}
/** * snd_hda_multi_out_analog_cleanup - clean up the setting for analog out * @codec: the HDA codec * @mout: hda_multi_out object
*/ int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec, struct hda_multi_out *mout)
{ const hda_nid_t *nids = mout->dac_nids; int i;
for (i = 0; i < mout->num_dacs; i++)
snd_hda_codec_cleanup_stream(codec, nids[i]); if (mout->hp_nid)
snd_hda_codec_cleanup_stream(codec, mout->hp_nid); for (i = 0; i < ARRAY_SIZE(mout->hp_out_nid); i++) if (mout->hp_out_nid[i])
snd_hda_codec_cleanup_stream(codec,
mout->hp_out_nid[i]); for (i = 0; i < ARRAY_SIZE(mout->extra_out_nid); i++) if (mout->extra_out_nid[i])
snd_hda_codec_cleanup_stream(codec,
mout->extra_out_nid[i]);
mutex_lock(&codec->spdif_mutex); if (mout->dig_out_nid && mout->dig_out_used == HDA_DIG_ANALOG_DUP) {
cleanup_dig_out_stream(codec, mout->dig_out_nid);
mout->dig_out_used = 0;
}
mutex_unlock(&codec->spdif_mutex); return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_cleanup);
/** * snd_hda_get_default_vref - Get the default (mic) VREF pin bits * @codec: the HDA codec * @pin: referred pin NID * * Guess the suitable VREF pin bits to be set as the pin-control value. * Note: the function doesn't set the AC_PINCTL_IN_EN bit.
*/ unsignedint snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin)
{ unsignedint pincap; unsignedint oldval;
oldval = snd_hda_codec_read(codec, pin, 0,
AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
pincap = snd_hda_query_pin_caps(codec, pin);
pincap = (pincap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT; /* Exception: if the default pin setup is vref50, we give it priority */ if ((pincap & AC_PINCAP_VREF_80) && oldval != PIN_VREF50) return AC_PINCTL_VREF_80; elseif (pincap & AC_PINCAP_VREF_50) return AC_PINCTL_VREF_50; elseif (pincap & AC_PINCAP_VREF_100) return AC_PINCTL_VREF_100; elseif (pincap & AC_PINCAP_VREF_GRD) return AC_PINCTL_VREF_GRD; return AC_PINCTL_VREF_HIZ;
}
EXPORT_SYMBOL_GPL(snd_hda_get_default_vref);
/** * snd_hda_correct_pin_ctl - correct the pin ctl value for matching with the pin cap * @codec: the HDA codec * @pin: referred pin NID * @val: pin ctl value to audit
*/ unsignedint snd_hda_correct_pin_ctl(struct hda_codec *codec,
hda_nid_t pin, unsignedint val)
{ staticconstunsignedint cap_lists[][2] = {
{ AC_PINCTL_VREF_100, AC_PINCAP_VREF_100 },
{ AC_PINCTL_VREF_80, AC_PINCAP_VREF_80 },
{ AC_PINCTL_VREF_50, AC_PINCAP_VREF_50 },
{ AC_PINCTL_VREF_GRD, AC_PINCAP_VREF_GRD },
}; unsignedint cap;
if (!val) return 0;
cap = snd_hda_query_pin_caps(codec, pin); if (!cap) return val; /* don't know what to do... */
if (val & AC_PINCTL_OUT_EN) { if (!(cap & AC_PINCAP_OUT))
val &= ~(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN); elseif ((val & AC_PINCTL_HP_EN) && !(cap & AC_PINCAP_HP_DRV))
val &= ~AC_PINCTL_HP_EN;
}
if (val & AC_PINCTL_IN_EN) { if (!(cap & AC_PINCAP_IN))
val &= ~(AC_PINCTL_IN_EN | AC_PINCTL_VREFEN); else { unsignedint vcap, vref; int i;
vcap = (cap & AC_PINCAP_VREF) >> AC_PINCAP_VREF_SHIFT;
vref = val & AC_PINCTL_VREFEN; for (i = 0; i < ARRAY_SIZE(cap_lists); i++) { if (vref == cap_lists[i][0] &&
!(vcap & cap_lists[i][1])) { if (i == ARRAY_SIZE(cap_lists) - 1)
vref = AC_PINCTL_VREF_HIZ; else
vref = cap_lists[i + 1][0];
}
}
val &= ~AC_PINCTL_VREFEN;
val |= vref;
}
}
/** * _snd_hda_set_pin_ctl - Helper to set pin ctl value * @codec: the HDA codec * @pin: referred pin NID * @val: pin control value to set * @cached: access over codec pinctl cache or direct write * * This function is a helper to set a pin ctl value more safely. * It corrects the pin ctl value via snd_hda_correct_pin_ctl(), stores the * value in pin target array via snd_hda_codec_set_pin_target(), then * actually writes the value via either snd_hda_codec_write_cache() or * snd_hda_codec_write() depending on @cached flag.
*/ int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin, unsignedint val, bool cached)
{
val = snd_hda_correct_pin_ctl(codec, pin, val);
snd_hda_codec_set_pin_target(codec, pin, val); if (cached) return snd_hda_codec_write_cache(codec, pin, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, val); else return snd_hda_codec_write(codec, pin, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL, val);
}
EXPORT_SYMBOL_GPL(_snd_hda_set_pin_ctl);
/** * snd_hda_add_imux_item - Add an item to input_mux * @codec: the HDA codec * @imux: imux helper object * @label: the name of imux item to assign * @index: index number of imux item to assign * @type_idx: pointer to store the resultant label index * * When the same label is used already in the existing items, the number * suffix is appended to the label. This label index number is stored * to type_idx when non-NULL pointer is given.
*/ int snd_hda_add_imux_item(struct hda_codec *codec, struct hda_input_mux *imux, constchar *label, int index, int *type_idx)
{ int i, label_idx = 0; if (imux->num_items >= HDA_MAX_NUM_INPUTS) {
codec_err(codec, "hda_codec: Too many imux items!\n"); return -EINVAL;
} for (i = 0; i < imux->num_items; i++) { if (!strncmp(label, imux->items[i].label, strlen(label)))
label_idx++;
} if (type_idx)
*type_idx = label_idx; if (label_idx > 0)
snprintf(imux->items[imux->num_items].label, sizeof(imux->items[imux->num_items].label), "%s %d", label, label_idx); else
strscpy(imux->items[imux->num_items].label, label, sizeof(imux->items[imux->num_items].label));
imux->items[imux->num_items].index = index;
imux->num_items++; return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_add_imux_item);
/** * snd_hda_bus_reset_codecs - Reset the bus * @bus: HD-audio bus
*/ void snd_hda_bus_reset_codecs(struct hda_bus *bus)
{ struct hda_codec *codec;
list_for_each_codec(codec, bus) { /* FIXME: maybe a better way needed for forced reset */ if (current_work() != &codec->jackpoll_work.work)
cancel_delayed_work_sync(&codec->jackpoll_work); if (hda_codec_is_power_on(codec)) {
hda_call_codec_suspend(codec);
hda_call_codec_resume(codec);
}
}
}
/** * snd_print_pcm_bits - Print the supported PCM fmt bits to the string buffer * @pcm: PCM caps bits * @buf: the string buffer to write * @buflen: the max buffer length * * used by hda_proc.c and hda_eld.c
*/ void snd_print_pcm_bits(int pcm, char *buf, int buflen)
{ staticconstunsignedint bits[] = { 8, 16, 20, 24, 32 }; int i, j;
for (i = 0, j = 0; i < ARRAY_SIZE(bits); i++) if (pcm & (AC_SUPPCM_BITS_8 << i))
j += scnprintf(buf + j, buflen - j, " %d", bits[i]);
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