From: Takashi Sakamoto Date: Sun, 20 Jan 2019 08:25:50 +0000 (+0900) Subject: ALSA: fireface: add protocol-dependent operation to get clock status X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b1d0cb0ae511c0558155c4d4cbb852c9e53bfb67;p=openwrt%2Fstaging%2Fblogic.git ALSA: fireface: add protocol-dependent operation to get clock status This commit adds a member for a callback function to get clock status to former protocol. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c index d0bc96b20a65..5adf04b95c04 100644 --- a/sound/firewire/fireface/ff-pcm.c +++ b/sound/firewire/fireface/ff-pcm.c @@ -152,7 +152,7 @@ static int pcm_open(struct snd_pcm_substream *substream) if (err < 0) goto release_lock; - err = snd_ff_transaction_get_clock(ff, &rate, &src); + err = ff->spec->protocol->get_clock(ff, &rate, &src); if (err < 0) goto release_lock; diff --git a/sound/firewire/fireface/ff-protocol-former.c b/sound/firewire/fireface/ff-protocol-former.c index 279bd032acf0..d32104ed0c08 100644 --- a/sound/firewire/fireface/ff-protocol-former.c +++ b/sound/firewire/fireface/ff-protocol-former.c @@ -12,6 +12,70 @@ #define FORMER_REG_SYNC_STATUS 0x0000801c0000ull /* For block write request. */ #define FORMER_REG_FETCH_PCM_FRAMES 0x0000801c0000ull +#define FORMER_REG_CLOCK_CONFIG 0x0000801c0004ull + +static int former_get_clock(struct snd_ff *ff, unsigned int *rate, + enum snd_ff_clock_src *src) +{ + __le32 reg; + u32 data; + int err; + + err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST, + FORMER_REG_CLOCK_CONFIG, ®, sizeof(reg), 0); + if (err < 0) + return err; + data = le32_to_cpu(reg); + + /* Calculate sampling rate. */ + switch ((data >> 1) & 0x03) { + case 0x01: + *rate = 32000; + break; + case 0x00: + *rate = 44100; + break; + case 0x03: + *rate = 48000; + break; + case 0x02: + default: + return -EIO; + } + + if (data & 0x08) + *rate *= 2; + else if (data & 0x10) + *rate *= 4; + + /* Calculate source of clock. */ + if (data & 0x01) { + *src = SND_FF_CLOCK_SRC_INTERNAL; + } else { + /* TODO: 0x02, 0x06, 0x07? */ + switch ((data >> 10) & 0x07) { + case 0x00: + *src = SND_FF_CLOCK_SRC_ADAT1; + break; + case 0x01: + *src = SND_FF_CLOCK_SRC_ADAT2; + break; + case 0x03: + *src = SND_FF_CLOCK_SRC_SPDIF; + break; + case 0x04: + *src = SND_FF_CLOCK_SRC_WORD; + break; + case 0x05: + *src = SND_FF_CLOCK_SRC_LTC; + break; + default: + return -EIO; + } + } + + return 0; +} static int former_switch_fetching_mode(struct snd_ff *ff, bool enable) { @@ -56,7 +120,7 @@ static void dump_clock_config(struct snd_ff *ff, struct snd_info_buffer *buffer) int err; err = snd_fw_transaction(ff->unit, TCODE_READ_BLOCK_REQUEST, - SND_FF_REG_CLOCK_CONFIG, ®, sizeof(reg), 0); + FORMER_REG_CLOCK_CONFIG, ®, sizeof(reg), 0); if (err < 0) return; @@ -383,6 +447,7 @@ static void ff800_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length) const struct snd_ff_protocol snd_ff_protocol_ff800 = { .handle_midi_msg = ff800_handle_midi_msg, + .get_clock = former_get_clock, .switch_fetching_mode = former_switch_fetching_mode, .begin_session = ff800_begin_session, .finish_session = ff800_finish_session, @@ -532,6 +597,7 @@ static void ff400_handle_midi_msg(struct snd_ff *ff, __le32 *buf, size_t length) const struct snd_ff_protocol snd_ff_protocol_ff400 = { .handle_midi_msg = ff400_handle_midi_msg, + .get_clock = former_get_clock, .switch_fetching_mode = former_switch_fetching_mode, .begin_session = ff400_begin_session, .finish_session = ff400_finish_session, diff --git a/sound/firewire/fireface/ff-stream.c b/sound/firewire/fireface/ff-stream.c index 43e1e2679798..a8a90f1ae09e 100644 --- a/sound/firewire/fireface/ff-stream.c +++ b/sound/firewire/fireface/ff-stream.c @@ -113,7 +113,7 @@ int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate) if (ff->substreams_counter == 0) return 0; - err = snd_ff_transaction_get_clock(ff, &curr_rate, &src); + err = ff->spec->protocol->get_clock(ff, &curr_rate, &src); if (err < 0) return err; if (curr_rate != rate || diff --git a/sound/firewire/fireface/ff-transaction.c b/sound/firewire/fireface/ff-transaction.c index 5f4ddfd55403..065e045d3fb5 100644 --- a/sound/firewire/fireface/ff-transaction.c +++ b/sound/firewire/fireface/ff-transaction.c @@ -11,69 +11,6 @@ #define SND_FF_REG_MIDI_RX_PORT_0 0x000080180000ull #define SND_FF_REG_MIDI_RX_PORT_1 0x000080190000ull -int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate, - enum snd_ff_clock_src *src) -{ - __le32 reg; - u32 data; - int err; - - err = snd_fw_transaction(ff->unit, TCODE_READ_QUADLET_REQUEST, - SND_FF_REG_CLOCK_CONFIG, ®, sizeof(reg), 0); - if (err < 0) - return err; - data = le32_to_cpu(reg); - - /* Calculate sampling rate. */ - switch ((data >> 1) & 0x03) { - case 0x01: - *rate = 32000; - break; - case 0x00: - *rate = 44100; - break; - case 0x03: - *rate = 48000; - break; - case 0x02: - default: - return -EIO; - } - - if (data & 0x08) - *rate *= 2; - else if (data & 0x10) - *rate *= 4; - - /* Calculate source of clock. */ - if (data & 0x01) { - *src = SND_FF_CLOCK_SRC_INTERNAL; - } else { - /* TODO: 0x02, 0x06, 0x07? */ - switch ((data >> 10) & 0x07) { - case 0x00: - *src = SND_FF_CLOCK_SRC_ADAT1; - break; - case 0x01: - *src = SND_FF_CLOCK_SRC_ADAT2; - break; - case 0x03: - *src = SND_FF_CLOCK_SRC_SPDIF; - break; - case 0x04: - *src = SND_FF_CLOCK_SRC_WORD; - break; - case 0x05: - *src = SND_FF_CLOCK_SRC_LTC; - break; - default: - return -EIO; - } - } - - return 0; -} - static void finish_transmit_midi_msg(struct snd_ff *ff, unsigned int port, int rcode) { diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h index 29f55518bf85..1de2f5ec26fd 100644 --- a/sound/firewire/fireface/ff.h +++ b/sound/firewire/fireface/ff.h @@ -35,8 +35,6 @@ #define SND_FF_IN_MIDI_PORTS 2 #define SND_FF_OUT_MIDI_PORTS 2 -#define SND_FF_REG_CLOCK_CONFIG 0x0000801c0004ull - enum snd_ff_stream_mode { SND_FF_STREAM_MODE_LOW = 0, SND_FF_STREAM_MODE_MID, @@ -106,6 +104,8 @@ enum snd_ff_clock_src { struct snd_ff_protocol { void (*handle_midi_msg)(struct snd_ff *ff, __le32 *buf, size_t length); + int (*get_clock)(struct snd_ff *ff, unsigned int *rate, + enum snd_ff_clock_src *src); int (*switch_fetching_mode)(struct snd_ff *ff, bool enable); int (*begin_session)(struct snd_ff *ff, unsigned int rate); void (*finish_session)(struct snd_ff *ff); @@ -115,8 +115,6 @@ struct snd_ff_protocol { extern const struct snd_ff_protocol snd_ff_protocol_ff800; extern const struct snd_ff_protocol snd_ff_protocol_ff400; -int snd_ff_transaction_get_clock(struct snd_ff *ff, unsigned int *rate, - enum snd_ff_clock_src *src); int snd_ff_transaction_register(struct snd_ff *ff); int snd_ff_transaction_reregister(struct snd_ff *ff); void snd_ff_transaction_unregister(struct snd_ff *ff);