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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2021-06-23 10:59:34 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-06-23 11:17:24 +0300 |
| commit | 25eb438920e43ff49c6041a23619f22af6b21a5c (patch) | |
| tree | 6f72e2da106c9c8a26aaff9d610204f1aee6f242 /sound/firewire | |
| parent | fa4db23233eb912234bdfb0b26a38be079c6b5ea (diff) | |
| download | linux-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')
| -rw-r--r-- | sound/firewire/motu/motu-protocol-v2.c | 68 |
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, ®, 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, ®, + 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) { |