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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2021-06-23 10:59:34 +0300
committerTakashi Iwai <tiwai@suse.de>2021-06-23 11:17:24 +0300
commit25eb438920e43ff49c6041a23619f22af6b21a5c (patch)
tree6f72e2da106c9c8a26aaff9d610204f1aee6f242 /sound/firewire/motu
parentfa4db23233eb912234bdfb0b26a38be079c6b5ea (diff)
downloadlinux-25eb438920e43ff49c6041a23619f22af6b21a5c.tar.xz
ALSA: firewire-motu: code refactoring for detection of clock source in v2 protocol
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/20210623075941.72562-3-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/motu')
-rw-r--r--sound/firewire/motu/motu-protocol-v2.c68
1 files changed, 21 insertions, 47 deletions
diff --git a/sound/firewire/motu/motu-protocol-v2.c b/sound/firewire/motu/motu-protocol-v2.c
index f0a0ecad4d74..7b69a8ef6b3d 100644
--- a/sound/firewire/motu/motu-protocol-v2.c
+++ b/sound/firewire/motu/motu-protocol-v2.c
@@ -78,10 +78,10 @@ int snd_motu_protocol_v2_set_clock_rate(struct snd_motu *motu,
sizeof(reg));
}
-static int detect_clock_source_optical_model(struct snd_motu *motu, u32 data,
- enum snd_motu_clock_source *src)
+static int get_clock_source(struct snd_motu *motu, u32 data,
+ enum snd_motu_clock_source *src)
{
- switch (data) {
+ switch (data & V2_CLOCK_SRC_MASK) {
case 0:
*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
break;
@@ -90,17 +90,26 @@ static int detect_clock_source_optical_model(struct snd_motu *motu, u32 data,
break;
case 2:
{
- __be32 reg;
+ bool support_iec60958_on_opt = (motu->spec == &snd_motu_spec_828mk2 ||
+ motu->spec == &snd_motu_spec_traveler);
- // To check the configuration of optical interface.
- int err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, &reg, sizeof(reg));
- if (err < 0)
- return err;
-
- if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) == V2_OPT_IFACE_MODE_SPDIF)
- *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT;
- else
+ if (!support_iec60958_on_opt) {
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
+ } else {
+ __be32 reg;
+
+ // To check the configuration of optical interface.
+ int err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, &reg,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+
+ if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
+ V2_OPT_IFACE_MODE_SPDIF)
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT;
+ else
+ *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
+ }
break;
}
case 3:
@@ -120,41 +129,6 @@ static int detect_clock_source_optical_model(struct snd_motu *motu, u32 data,
return 0;
}
-static int v2_detect_clock_source(struct snd_motu *motu, u32 data,
- enum snd_motu_clock_source *src)
-{
- switch (data) {
- case 0:
- *src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
- break;
- case 2:
- *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
- break;
- case 3:
- *src = SND_MOTU_CLOCK_SOURCE_SPH;
- break;
- case 4:
- *src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
- break;
- default:
- *src = SND_MOTU_CLOCK_SOURCE_UNKNOWN;
- break;
- }
-
- return 0;
-}
-
-static int get_clock_source(struct snd_motu *motu, u32 data,
- enum snd_motu_clock_source *src)
-{
- data &= V2_CLOCK_SRC_MASK;
- if (motu->spec == &snd_motu_spec_828mk2 ||
- motu->spec == &snd_motu_spec_traveler)
- return detect_clock_source_optical_model(motu, data, src);
- else
- return v2_detect_clock_source(motu, data, src);
-}
-
int snd_motu_protocol_v2_get_clock_source(struct snd_motu *motu,
enum snd_motu_clock_source *src)
{