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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2020-05-19 20:16:40 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-05-22 16:52:18 +0200 |
| commit | 7b47c0d719f47e990a4130534182058780f7322a (patch) | |
| tree | 32abb30a80d2c8f8b2d77f0286911c8ac4b7341a /sound/firewire | |
| parent | 2b8f050e4ea97bd9851d023935e0ca5229e6905b (diff) | |
| download | linux-7b47c0d719f47e990a4130534182058780f7322a.tar.bz2 | |
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.c | 98 |
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, ®, - 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, - ®, sizeof(reg)); + break; + case 0x18: + case 0x19: + { + __be32 reg; + u32 options; + int err; + + err = snd_motu_transaction_read(motu, + V3_OPT_IFACE_MODE_OFFSET, ®, 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, ®, + 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) { |