This commit adds a member for a callback function to switch frame fetching mode to former protocol.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp --- sound/firewire/fireface/ff-protocol-former.c | 38 ++++++++++++++++++++ sound/firewire/fireface/ff-stream.c | 38 ++------------------ sound/firewire/fireface/ff.h | 3 +- 3 files changed, 41 insertions(+), 38 deletions(-)
diff --git a/sound/firewire/fireface/ff-protocol-former.c b/sound/firewire/fireface/ff-protocol-former.c index 5f97e7fc7281..279bd032acf0 100644 --- a/sound/firewire/fireface/ff-protocol-former.c +++ b/sound/firewire/fireface/ff-protocol-former.c @@ -10,6 +10,42 @@ #include "ff.h"
#define FORMER_REG_SYNC_STATUS 0x0000801c0000ull +/* For block write request. */ +#define FORMER_REG_FETCH_PCM_FRAMES 0x0000801c0000ull + +static int former_switch_fetching_mode(struct snd_ff *ff, bool enable) +{ + unsigned int count; + __le32 *reg; + int i; + int err; + + count = 0; + for (i = 0; i < SND_FF_STREAM_MODE_COUNT; ++i) + count = max(count, ff->spec->pcm_playback_channels[i]); + + reg = kcalloc(count, sizeof(__le32), GFP_KERNEL); + if (!reg) + return -ENOMEM; + + if (!enable) { + /* + * Each quadlet is corresponding to data channels in a data + * blocks in reverse order. Precisely, quadlets for available + * data channels should be enabled. Here, I take second best + * to fetch PCM frames from all of data channels regardless of + * stf. + */ + for (i = 0; i < count; ++i) + reg[i] = cpu_to_le32(0x00000001); + } + + err = snd_fw_transaction(ff->unit, TCODE_WRITE_BLOCK_REQUEST, + FORMER_REG_FETCH_PCM_FRAMES, reg, + sizeof(__le32) * count, 0); + kfree(reg); + return err; +}
static void dump_clock_config(struct snd_ff *ff, struct snd_info_buffer *buffer) { @@ -347,6 +383,7 @@ 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, + .switch_fetching_mode = former_switch_fetching_mode, .begin_session = ff800_begin_session, .finish_session = ff800_finish_session, .dump_status = former_dump_status, @@ -495,6 +532,7 @@ 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, + .switch_fetching_mode = former_switch_fetching_mode, .begin_session = ff400_begin_session, .finish_session = ff400_finish_session, .dump_status = former_dump_status, diff --git a/sound/firewire/fireface/ff-stream.c b/sound/firewire/fireface/ff-stream.c index a490e4553721..43e1e2679798 100644 --- a/sound/firewire/fireface/ff-stream.c +++ b/sound/firewire/fireface/ff-stream.c @@ -37,44 +37,10 @@ static void release_resources(struct snd_ff *ff) fw_iso_resources_free(&ff->rx_resources); }
-static int switch_fetching_mode(struct snd_ff *ff, bool enable) -{ - unsigned int count; - __le32 *reg; - int i; - int err; - - count = 0; - for (i = 0; i < SND_FF_STREAM_MODE_COUNT; ++i) - count = max(count, ff->spec->pcm_playback_channels[i]); - - reg = kcalloc(count, sizeof(__le32), GFP_KERNEL); - if (!reg) - return -ENOMEM; - - if (!enable) { - /* - * Each quadlet is corresponding to data channels in a data - * blocks in reverse order. Precisely, quadlets for available - * data channels should be enabled. Here, I take second best - * to fetch PCM frames from all of data channels regardless of - * stf. - */ - for (i = 0; i < count; ++i) - reg[i] = cpu_to_le32(0x00000001); - } - - err = snd_fw_transaction(ff->unit, TCODE_WRITE_BLOCK_REQUEST, - SND_FF_REG_FETCH_PCM_FRAMES, reg, - sizeof(__le32) * count, 0); - kfree(reg); - return err; -} - static inline void finish_session(struct snd_ff *ff) { ff->spec->protocol->finish_session(ff); - switch_fetching_mode(ff, false); + ff->spec->protocol->switch_fetching_mode(ff, false); }
static int init_stream(struct snd_ff *ff, enum amdtp_stream_direction dir) @@ -206,7 +172,7 @@ int snd_ff_stream_start_duplex(struct snd_ff *ff, unsigned int rate) goto error; }
- err = switch_fetching_mode(ff, true); + err = ff->spec->protocol->switch_fetching_mode(ff, true); if (err < 0) goto error; } diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h index 3f22b8d84e36..29f55518bf85 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
-/* For block write request. */ -#define SND_FF_REG_FETCH_PCM_FRAMES 0x0000801c0000ull #define SND_FF_REG_CLOCK_CONFIG 0x0000801c0004ull
enum snd_ff_stream_mode { @@ -108,6 +106,7 @@ enum snd_ff_clock_src {
struct snd_ff_protocol { void (*handle_midi_msg)(struct snd_ff *ff, __le32 *buf, size_t length); + 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); void (*dump_status)(struct snd_ff *ff, struct snd_info_buffer *buffer);