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ALSA: firewire-motu: use macro instead of magic number for clock source in v2 protocol 

This commit adds a series of macro for source of sampling clock in
version 2 protocol.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210623075941.72562-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2021-06-23 16:59:36 +09:00 committed by Takashi Iwai
parent 683d36690f
commit 184aa6b7e1
1 changed files with 14 additions and 7 deletions
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21
sound/firewire/motu/motu-protocol-v2.c
View File

@ -12,6 +12,13 @@
#define V2_CLOCK_RATE_SHIFT 3
#define V2_CLOCK_SRC_MASK 0x00000007
#define V2_CLOCK_SRC_SHIFT 0
#define V2_CLOCK_SRC_AESEBU_ON_XLR 0x07
#define V2_CLOCK_SRC_ADAT_ON_DSUB 0x05
#define V2_CLOCK_SRC_WORD_ON_BNC 0x04
#define V2_CLOCK_SRC_SPH 0x03
#define V2_CLOCK_SRC_SPDIF 0x02 // on either coaxial or optical
#define V2_CLOCK_SRC_ADAT_ON_OPT 0x01
#define V2_CLOCK_SRC_INTERNAL 0x00
#define V2_CLOCK_FETCH_ENABLE 0x02000000
#define V2_CLOCK_MODEL_SPECIFIC 0x04000000
@ -82,13 +89,13 @@ static int get_clock_source(struct snd_motu *motu, u32 data,
enum snd_motu_clock_source *src)
{
switch (data & V2_CLOCK_SRC_MASK) {
case 0:
case V2_CLOCK_SRC_INTERNAL:
*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
break;
case 1:
case V2_CLOCK_SRC_ADAT_ON_OPT:
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT;
break;
case 2:
case V2_CLOCK_SRC_SPDIF:
{
bool support_iec60958_on_opt = (motu->spec == &snd_motu_spec_828mk2 ||
motu->spec == &snd_motu_spec_traveler);
@ -112,16 +119,16 @@ static int get_clock_source(struct snd_motu *motu, u32 data,
}
break;
}
case 3:
case V2_CLOCK_SRC_SPH:
*src = SND_MOTU_CLOCK_SOURCE_SPH;
break;
case 4:
case V2_CLOCK_SRC_WORD_ON_BNC:
*src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
break;
case 5:
case V2_CLOCK_SRC_ADAT_ON_DSUB:
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB;
break;
case 7:
case V2_CLOCK_SRC_AESEBU_ON_XLR:
*src = SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR;
break;
default: