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ALSA: hda - Create snd_hda_get_conn_index() helper function

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Create snd_hda_get_conn_index() helper function for obtaining the
connection index of the widget.  Replaced the similar codes used in
several codec-drivers with this common helper.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2011-06-28 12:45:47 +02:00
parent 63f10d2ca7
commit 8d087c7600
8 changed files with 59 additions and 108 deletions
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15
sound/pci/hda/patch_conexant.c
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@@ -3308,19 +3308,8 @@ static const struct hda_pcm_stream cx_auto_pcm_analog_capture = {
static const hda_nid_t cx_auto_adc_nids[] = { 0x14 };
/* get the connection index of @nid in the widget @mux */
static int get_connection_index(struct hda_codec *codec, hda_nid_t mux,
hda_nid_t nid)
{
hda_nid_t conn[HDA_MAX_NUM_INPUTS];
int i, nums;
nums = snd_hda_get_connections(codec, mux, conn, ARRAY_SIZE(conn));
for (i = 0; i < nums; i++)
if (conn[i] == nid)
return i;
return -1;
}
#define get_connection_index(codec, mux, nid)\
snd_hda_get_conn_index(codec, mux, nid, 0)
/* get an unassigned DAC from the given list.
* Return the nid if found and reduce the DAC list, or return zero if