/**
* snd_hda_get_pin_label - Get a label for the given I/O pin
*
* Get a label for the given pin. This function works for both input and
* output pins. When @cfg is given as non-NULL, the function tries to get
* an optimized label using hda_get_autocfg_input_label().
*
* This function tries to give a unique label string for the pin as much as
* possible. For example, when the multiple line-outs are present, it adds
* the channel suffix like "Front", "Surround", etc (only when @cfg is given).
* If no unique name with a suffix is available and @indexp is non-NULL, the
* index number is stored in the pointer.
*/
int snd_hda_get_pin_label(struct hda_codec *codec, hda_nid_t nid,
const struct auto_pin_cfg *cfg,
char *label, int maxlen, int *indexp)
{
unsigned int def_conf = snd_hda_codec_get_pincfg(codec, nid);
const char *name = NULL;
int i;
if (indexp)
*indexp = 0;
if (get_defcfg_connect(def_conf) == AC_JACK_PORT_NONE)
return 0;
switch (get_defcfg_device(def_conf)) {
case AC_JACK_LINE_OUT:
return fill_audio_out_name(codec, nid, cfg, "Line Out",
label, maxlen, indexp);
case AC_JACK_SPEAKER:
return fill_audio_out_name(codec, nid, cfg, "Speaker",
label, maxlen, indexp);
case AC_JACK_HP_OUT:
return fill_audio_out_name(codec, nid, cfg, "Headphone",
label, maxlen, indexp);
case AC_JACK_SPDIF_OUT:
case AC_JACK_DIG_OTHER_OUT:
if (get_defcfg_location(def_conf) == AC_JACK_LOC_HDMI)
name = "HDMI";
else
name = "SPDIF";
if (cfg && indexp) {
i = find_idx_in_nid_list(nid, cfg->dig_out_pins,
cfg->dig_outs);
if (i >= 0)
*indexp = i;
}
break;
default:
if (cfg) {
for (i = 0; i < cfg->num_inputs; i++) {
if (cfg->inputs[i].pin != nid)
continue;
name = hda_get_autocfg_input_label(codec, cfg, i);
if (name)
break;
}
}
if (!name)
name = hda_get_input_pin_label(codec, nid, true);
break;
}
if (!name)
return 0;
strlcpy(label, name, maxlen);
return 1;
}
static int get_hp_label_index(struct hda_codec *codec, hda_nid_t nid,
const hda_nid_t *pins, int num_pins)
{
int i, j, idx = 0;
const char *pfx = check_output_pfx(codec, nid);
i = find_idx_in_nid_list(nid, pins, num_pins);
if (i < 0)
return -1;
for (j = 0; j < i; j++)
if (pfx == check_output_pfx(codec, pins[j]))
idx++;
return idx;
}
/* get a unique suffix or an index number */
static const char *check_output_sfx(hda_nid_t nid, const hda_nid_t *pins,
int num_pins, int *indexp)
{
static const char * const channel_sfx[] = {
" Front", " Surround", " CLFE", " Side"
};
int i;
i = find_idx_in_nid_list(nid, pins, num_pins);
if (i < 0)
return NULL;
if (num_pins == 1)
return "";
if (num_pins > ARRAY_SIZE(channel_sfx)) {
if (indexp)
*indexp = i;
return "";
}
return channel_sfx[i];
}
static int fill_audio_out_name(struct hda_codec *codec, hda_nid_t nid,
const struct auto_pin_cfg *cfg,
const char *name, char *label, int maxlen,
int *indexp)
{
unsigned int def_conf = snd_hda_codec_get_pincfg(codec, nid);
int attr = snd_hda_get_input_pin_attr(def_conf);
const char *pfx = "", *sfx = "";
/* handle as a speaker if it's a fixed line-out */
if (!strcmp(name, "Line Out") && attr == INPUT_PIN_ATTR_INT)
name = "Speaker";
/* check the location */
switch (attr) {
case INPUT_PIN_ATTR_DOCK:
pfx = "Dock ";
break;
case INPUT_PIN_ATTR_FRONT:
pfx = "Front ";
break;
}
if (cfg) {
/* try to give a unique suffix if needed */
sfx = check_output_sfx(nid, cfg->line_out_pins, cfg->line_outs,
indexp);
if (!sfx)
sfx = check_output_sfx(nid, cfg->speaker_pins, cfg->speaker_outs,
indexp);
if (!sfx) {
/* don't add channel suffix for Headphone controls */
int idx = find_idx_in_nid_list(nid, cfg->hp_pins,
cfg->hp_outs);
if (idx >= 0)
*indexp = idx;
sfx = "";
}
}
snprintf(label, maxlen, "%s%s%s", pfx, name, sfx);
return 1;
}
