/* * 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);
}
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