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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2020-05-19 14:16:40 +0300
committerTakashi Iwai <tiwai@suse.de>2020-05-22 17:52:18 +0300
commit7b47c0d719f47e990a4130534182058780f7322a (patch)
tree32abb30a80d2c8f8b2d77f0286911c8ac4b7341a /sound/firewire
parent2b8f050e4ea97bd9851d023935e0ca5229e6905b (diff)
downloadlinux-7b47c0d719f47e990a4130534182058780f7322a.tar.xz
ALSA: firewire-motu: refactoring protocol v3 for clock source getter
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>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/motu/motu-protocol-v3.c98
1 files changed, 72 insertions, 26 deletions
diff --git a/sound/firewire/motu/motu-protocol-v3.c b/sound/firewire/motu/motu-protocol-v3.c
index cc100d7be0bf..fd49d1fcf473 100644
--- a/sound/firewire/motu/motu-protocol-v3.c
+++ b/sound/firewire/motu/motu-protocol-v3.c
@@ -87,54 +87,100 @@ int snd_motu_protocol_v3_set_clock_rate(struct snd_motu *motu,
return 0;
}
-int snd_motu_protocol_v3_get_clock_source(struct snd_motu *motu,
- enum snd_motu_clock_source *src)
+static int detect_clock_source_828mk3(struct snd_motu *motu, u32 data,
+ 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);
-
- val = data & V3_CLOCK_SOURCE_MASK;
- if (val == 0x00) {
+ switch (data) {
+ case 0x00:
*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
- } else if (val == 0x01) {
+ break;
+ case 0x01:
*src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
- } else if (val == 0x02) {
+ break;
+ case 0x02:
*src = SND_MOTU_CLOCK_SOURCE_SPH;
- } else if (val == 0x10) {
+ break;
+ case 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));
+ 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;
- data = be32_to_cpu(reg);
+ options = be32_to_cpu(reg);
- if (val == 0x18) {
- if (data & V3_NO_ADAT_OPT_IN_IFACE_A)
+ 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 (data & V3_NO_ADAT_OPT_IN_IFACE_B)
+ 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;
}
- } else {
+
+ 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;
+ 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)
+ 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)
{