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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2021-06-23 16:59:33 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-06-23 10:17:23 +0200 |
| commit | fa4db23233eb912234bdfb0b26a38be079c6b5ea (patch) | |
| tree | bfd7323e1e0c782d81c7696eca73a188cb3d4d11 | |
| parent | 91bc92d783fecb77b8bfa80787c8cfca6513a928 (diff) | |
| download | linux-fa4db23233eb912234bdfb0b26a38be079c6b5ea.tar.gz | |
ALSA: firewire-motu: fix detection for S/PDIF source on optical interface in v2 protocol
The devices in protocol version 2 has a register with flag for IEC 60958 signal detection as source of sampling clock without discrimination between coaxial and optical interfaces. On the other hand, current implementation of driver manage to interpret type of signal on optical interface instead. This commit fixes the detection of optical/coaxial interface for S/PDIF signal. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20210623075941.72562-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/firewire/motu/motu-protocol-v2.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/sound/firewire/motu/motu-protocol-v2.c b/sound/firewire/motu/motu-protocol-v2.c index 784073aa1026..f0a0ecad4d74 100644 --- a/sound/firewire/motu/motu-protocol-v2.c +++ b/sound/firewire/motu/motu-protocol-v2.c @@ -86,24 +86,23 @@ static int detect_clock_source_optical_model(struct snd_motu *motu, u32 data, *src = SND_MOTU_CLOCK_SOURCE_INTERNAL; break; case 1: + *src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT; + break; + case 2: { __be32 reg; // To check the configuration of optical interface. - int err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, - ®, sizeof(reg)); + int err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, ®, sizeof(reg)); if (err < 0) return err; - if (be32_to_cpu(reg) & 0x00000200) + 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_ADAT_ON_OPT; + *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX; break; } - case 2: - *src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX; - break; case 3: *src = SND_MOTU_CLOCK_SOURCE_SPH; break; |