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ALSA: firewire-motu: refactoring protocol v3 for clock source getter

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This commit splits the method to get clock source for protocol
version 3 so that model-dependent operations are explicitly defined.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20200519111641.123211-14-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2020-05-19 20:16:40 +09:00 committed by Takashi Iwai
parent 2b8f050e4e
commit 7b47c0d719
1 changed files with 80 additions and 34 deletions
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114
sound/firewire/motu/motu-protocol-v3.c
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@ -87,52 +87,98 @@ 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)
{
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;
case 0x18:
case 0x19:
{
__be32 reg;
u32 options;
int err;
err = snd_motu_transaction_read(motu,
V3_OPT_IFACE_MODE_OFFSET, &reg, sizeof(reg));
if (err < 0)
return err;
options = be32_to_cpu(reg);
if (data == 0x18) {
if (options & V3_NO_ADAT_OPT_IN_IFACE_A)
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A;
else
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A;
} else {
if (options & V3_NO_ADAT_OPT_IN_IFACE_B)
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B;
else
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B;
}
break;
}
default:
*src = SND_MOTU_CLOCK_SOURCE_UNKNOWN;
break;
}
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;
unsigned int val;
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);
data = be32_to_cpu(reg) & V3_CLOCK_SOURCE_MASK;
val = data & V3_CLOCK_SOURCE_MASK;
if (val == 0x00) {
*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
} else if (val == 0x01) {
*src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
} else if (val == 0x02) {
*src = SND_MOTU_CLOCK_SOURCE_SPH;
} else if (val == 0x10) {
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
} else if (val == 0x18 || val == 0x19) {
err = snd_motu_transaction_read(motu, V3_OPT_IFACE_MODE_OFFSET,
&reg, sizeof(reg));
if (err < 0)
return err;
data = be32_to_cpu(reg);
if (val == 0x18) {
if (data & V3_NO_ADAT_OPT_IN_IFACE_A)
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A;
else
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A;
} else {
if (data & V3_NO_ADAT_OPT_IN_IFACE_B)
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B;
else
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B;
}
} else {
*src = SND_MOTU_CLOCK_SOURCE_UNKNOWN;
}
return 0;
if (motu->spec == &snd_motu_spec_828mk3)
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,