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ALSA: firewire-motu: code refactoring for source detection of sampling clock in v3 protocol

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Current implementation of driver has two similar helper functions for
source detection of sampling clock. This commit merges them as a code
refactoring.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210623075941.72562-7-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2021-06-23 16:59:38 +09:00 committed by Takashi Iwai
parent 53ed8cf625
commit ef8f14ad2a
1 changed files with 12 additions and 47 deletions
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59
sound/firewire/motu/motu-protocol-v3.c
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@ -97,9 +97,19 @@ int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu,
return 0;
}
static int detect_clock_source_828mk3(struct snd_motu *motu, u32 data,
enum snd_motu_clock_source *src)
int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
enum snd_motu_clock_source *src)
{
__be32 reg;
u32 data;
int err;
err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, &reg,
sizeof(reg));
if (err < 0)
return err;
data = be32_to_cpu(reg) & V3_CLOCK_SOURCE_MASK;
switch (data) {
case 0x00:
*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
@ -118,7 +128,6 @@ static int detect_clock_source_828mk3(struct snd_motu *motu, u32 data,
{
__be32 reg;
u32 options;
int err;
err = snd_motu_transaction_read(motu,
V3_OPT_IFACE_MODE_OFFSET, &reg, sizeof(reg));
@ -137,7 +146,6 @@ static int detect_clock_source_828mk3(struct snd_motu *motu, u32 data,
else
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B;
}
break;
}
default:
@ -148,49 +156,6 @@ static int detect_clock_source_828mk3(struct snd_motu *motu, u32 data,
return 0;
}
static int v3_detect_clock_source(struct snd_motu *motu, u32 data,
enum snd_motu_clock_source *src)
{
switch (data) {
case 0x00:
*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
break;
case 0x01:
*src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
break;
case 0x02:
*src = SND_MOTU_CLOCK_SOURCE_SPH;
break;
case 0x10:
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
break;
default:
*src = SND_MOTU_CLOCK_SOURCE_UNKNOWN;
break;
}
return 0;
}
int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
enum snd_motu_clock_source *src)
{
__be32 reg;
u32 data;
int err;
err = snd_motu_transaction_read(motu, V3_CLOCK_STATUS_OFFSET, &reg,
sizeof(reg));
if (err < 0)
return err;
data = be32_to_cpu(reg) & V3_CLOCK_SOURCE_MASK;
if (motu->spec == &snd_motu_spec_828mk3_fw || motu->spec == &snd_motu_spec_828mk3_hybrid)
return detect_clock_source_828mk3(motu, data, src);
else
return v3_detect_clock_source(motu, data, src);
}
int snd_motu_protocol_v3_switch_fetching_mode(struct snd_motu *motu,
bool enable)
{