[ALSA] hda-codec - Code clean up
HDA Codec driver
Use struct instead of array to improve the readability of hda_codec.c.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index e067a14..20f7762 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -1163,7 +1163,13 @@
/*
* stream formats
*/
-static unsigned int rate_bits[][3] = {
+struct hda_rate_tbl {
+ unsigned int hz;
+ unsigned int alsa_bits;
+ unsigned int hda_fmt;
+};
+
+static struct hda_rate_tbl rate_bits[] = {
/* rate in Hz, ALSA rate bitmask, HDA format value */
/* autodetected value used in snd_hda_query_supported_pcm */
@@ -1181,7 +1187,8 @@
/* not autodetected value */
{ 9600, SNDRV_PCM_RATE_KNOT, 0x0400 }, /* 1/5 x 48 */
- { 0 }
+
+ { 0 } /* terminator */
};
/**
@@ -1203,12 +1210,12 @@
int i;
unsigned int val = 0;
- for (i = 0; rate_bits[i][0]; i++)
- if (rate_bits[i][0] == rate) {
- val = rate_bits[i][2];
+ for (i = 0; rate_bits[i].hz; i++)
+ if (rate_bits[i].hz == rate) {
+ val = rate_bits[i].hda_fmt;
break;
}
- if (! rate_bits[i][0]) {
+ if (! rate_bits[i].hz) {
snd_printdd("invalid rate %d\n", rate);
return 0;
}
@@ -1271,9 +1278,9 @@
if (ratesp) {
u32 rates = 0;
- for (i = 0; rate_bits[i][0]; i++) {
+ for (i = 0; rate_bits[i].hz; i++) {
if (val & (1 << i))
- rates |= rate_bits[i][1];
+ rates |= rate_bits[i].alsa_bits;
}
*ratesp = rates;
}
@@ -1365,13 +1372,13 @@
}
rate = format & 0xff00;
- for (i = 0; rate_bits[i][0]; i++)
- if (rate_bits[i][2] == rate) {
+ for (i = 0; rate_bits[i].hz; i++)
+ if (rate_bits[i].hda_fmt == rate) {
if (val & (1 << i))
break;
return 0;
}
- if (! rate_bits[i][0])
+ if (! rate_bits[i].hz)
return 0;
stream = snd_hda_param_read(codec, nid, AC_PAR_STREAM);