diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/firewire/digi00x/Makefile | 4 | ||||
| -rw-r--r-- | sound/firewire/digi00x/amdtp-dot.c | 402 | ||||
| -rw-r--r-- | sound/firewire/digi00x/digi00x-hwdep.c | 199 | ||||
| -rw-r--r-- | sound/firewire/digi00x/digi00x-midi.c | 169 | ||||
| -rw-r--r-- | sound/firewire/digi00x/digi00x-pcm.c | 370 | ||||
| -rw-r--r-- | sound/firewire/digi00x/digi00x-proc.c | 99 | ||||
| -rw-r--r-- | sound/firewire/digi00x/digi00x-stream.c | 422 | ||||
| -rw-r--r-- | sound/firewire/digi00x/digi00x-transaction.c | 84 | ||||
| -rw-r--r-- | sound/firewire/digi00x/digi00x.c | 230 | ||||
| -rw-r--r-- | sound/firewire/digi00x/digi00x.h | 159 |
10 files changed, 2138 insertions, 0 deletions
diff --git a/sound/firewire/digi00x/Makefile b/sound/firewire/digi00x/Makefile new file mode 100644 index 000000000..1123e68c8 --- /dev/null +++ b/sound/firewire/digi00x/Makefile @@ -0,0 +1,4 @@ +snd-firewire-digi00x-objs := amdtp-dot.o digi00x-stream.o digi00x-proc.o \ + digi00x-pcm.o digi00x-hwdep.o \ + digi00x-transaction.o digi00x-midi.o digi00x.o +obj-$(CONFIG_SND_FIREWIRE_DIGI00X) += snd-firewire-digi00x.o diff --git a/sound/firewire/digi00x/amdtp-dot.c b/sound/firewire/digi00x/amdtp-dot.c new file mode 100644 index 000000000..4a884a335 --- /dev/null +++ b/sound/firewire/digi00x/amdtp-dot.c @@ -0,0 +1,402 @@ +/* + * amdtp-dot.c - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * Copyright (C) 2012 Robin Gareus <robin@gareus.org> + * Copyright (C) 2012 Damien Zammit <damien@zamaudio.com> + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include <sound/pcm.h> +#include "digi00x.h" + +#define CIP_FMT_AM 0x10 + +/* 'Clock-based rate control mode' is just supported. */ +#define AMDTP_FDF_AM824 0x00 + +/* + * Nominally 3125 bytes/second, but the MIDI port's clock might be + * 1% too slow, and the bus clock 100 ppm too fast. + */ +#define MIDI_BYTES_PER_SECOND 3093 + +/* + * Several devices look only at the first eight data blocks. + * In any case, this is more than enough for the MIDI data rate. + */ +#define MAX_MIDI_RX_BLOCKS 8 + +/* 3 = MAX(DOT_MIDI_IN_PORTS, DOT_MIDI_OUT_PORTS) + 1. */ +#define MAX_MIDI_PORTS 3 + +/* + * The double-oh-three algorithm was discovered by Robin Gareus and Damien + * Zammit in 2012, with reverse-engineering for Digi 003 Rack. + */ +struct dot_state { + u8 carry; + u8 idx; + unsigned int off; +}; + +struct amdtp_dot { + unsigned int pcm_channels; + struct dot_state state; + + struct snd_rawmidi_substream *midi[MAX_MIDI_PORTS]; + int midi_fifo_used[MAX_MIDI_PORTS]; + int midi_fifo_limit; +}; + +/* + * double-oh-three look up table + * + * @param idx index byte (audio-sample data) 0x00..0xff + * @param off channel offset shift + * @return salt to XOR with given data + */ +#define BYTE_PER_SAMPLE (4) +#define MAGIC_DOT_BYTE (2) +#define MAGIC_BYTE_OFF(x) (((x) * BYTE_PER_SAMPLE) + MAGIC_DOT_BYTE) +static u8 dot_scrt(const u8 idx, const unsigned int off) +{ + /* + * the length of the added pattern only depends on the lower nibble + * of the last non-zero data + */ + static const u8 len[16] = {0, 1, 3, 5, 7, 9, 11, 13, 14, + 12, 10, 8, 6, 4, 2, 0}; + + /* + * the lower nibble of the salt. Interleaved sequence. + * this is walked backwards according to len[] + */ + static const u8 nib[15] = {0x8, 0x7, 0x9, 0x6, 0xa, 0x5, 0xb, 0x4, + 0xc, 0x3, 0xd, 0x2, 0xe, 0x1, 0xf}; + + /* circular list for the salt's hi nibble. */ + static const u8 hir[15] = {0x0, 0x6, 0xf, 0x8, 0x7, 0x5, 0x3, 0x4, + 0xc, 0xd, 0xe, 0x1, 0x2, 0xb, 0xa}; + + /* + * start offset for upper nibble mapping. + * note: 9 is /special/. In the case where the high nibble == 0x9, + * hir[] is not used and - coincidentally - the salt's hi nibble is + * 0x09 regardless of the offset. + */ + static const u8 hio[16] = {0, 11, 12, 6, 7, 5, 1, 4, + 3, 0x00, 14, 13, 8, 9, 10, 2}; + + const u8 ln = idx & 0xf; + const u8 hn = (idx >> 4) & 0xf; + const u8 hr = (hn == 0x9) ? 0x9 : hir[(hio[hn] + off) % 15]; + + if (len[ln] < off) + return 0x00; + + return ((nib[14 + off - len[ln]]) | (hr << 4)); +} + +static void dot_encode_step(struct dot_state *state, __be32 *const buffer) +{ + u8 * const data = (u8 *) buffer; + + if (data[MAGIC_DOT_BYTE] != 0x00) { + state->off = 0; + state->idx = data[MAGIC_DOT_BYTE] ^ state->carry; + } + data[MAGIC_DOT_BYTE] ^= state->carry; + state->carry = dot_scrt(state->idx, ++(state->off)); +} + +int amdtp_dot_set_parameters(struct amdtp_stream *s, unsigned int rate, + unsigned int pcm_channels) +{ + struct amdtp_dot *p = s->protocol; + int err; + + if (amdtp_stream_running(s)) + return -EBUSY; + + /* + * A first data channel is for MIDI messages, the rest is Multi Bit + * Linear Audio data channel. + */ + err = amdtp_stream_set_parameters(s, rate, pcm_channels + 1); + if (err < 0) + return err; + + s->fdf = AMDTP_FDF_AM824 | s->sfc; + + p->pcm_channels = pcm_channels; + + /* + * We do not know the actual MIDI FIFO size of most devices. Just + * assume two bytes, i.e., one byte can be received over the bus while + * the previous one is transmitted over MIDI. + * (The value here is adjusted for midi_ratelimit_per_packet().) + */ + p->midi_fifo_limit = rate - MIDI_BYTES_PER_SECOND * s->syt_interval + 1; + + return 0; +} + +static void write_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm, + __be32 *buffer, unsigned int frames) +{ + struct amdtp_dot *p = s->protocol; + struct snd_pcm_runtime *runtime = pcm->runtime; + unsigned int channels, remaining_frames, i, c; + const u32 *src; + + channels = p->pcm_channels; + src = (void *)runtime->dma_area + + frames_to_bytes(runtime, s->pcm_buffer_pointer); + remaining_frames = runtime->buffer_size - s->pcm_buffer_pointer; + + buffer++; + for (i = 0; i < frames; ++i) { + for (c = 0; c < channels; ++c) { + buffer[c] = cpu_to_be32((*src >> 8) | 0x40000000); + dot_encode_step(&p->state, &buffer[c]); + src++; + } + buffer += s->data_block_quadlets; + if (--remaining_frames == 0) + src = (void *)runtime->dma_area; + } +} + +static void read_pcm_s32(struct amdtp_stream *s, struct snd_pcm_substream *pcm, + __be32 *buffer, unsigned int frames) +{ + struct amdtp_dot *p = s->protocol; + struct snd_pcm_runtime *runtime = pcm->runtime; + unsigned int channels, remaining_frames, i, c; + u32 *dst; + + channels = p->pcm_channels; + dst = (void *)runtime->dma_area + + frames_to_bytes(runtime, s->pcm_buffer_pointer); + remaining_frames = runtime->buffer_size - s->pcm_buffer_pointer; + + buffer++; + for (i = 0; i < frames; ++i) { + for (c = 0; c < channels; ++c) { + *dst = be32_to_cpu(buffer[c]) << 8; + dst++; + } + buffer += s->data_block_quadlets; + if (--remaining_frames == 0) + dst = (void *)runtime->dma_area; + } +} + +static void write_pcm_silence(struct amdtp_stream *s, __be32 *buffer, + unsigned int data_blocks) +{ + struct amdtp_dot *p = s->protocol; + unsigned int channels, i, c; + + channels = p->pcm_channels; + + buffer++; + for (i = 0; i < data_blocks; ++i) { + for (c = 0; c < channels; ++c) + buffer[c] = cpu_to_be32(0x40000000); + buffer += s->data_block_quadlets; + } +} + +static bool midi_ratelimit_per_packet(struct amdtp_stream *s, unsigned int port) +{ + struct amdtp_dot *p = s->protocol; + int used; + + used = p->midi_fifo_used[port]; + if (used == 0) + return true; + + used -= MIDI_BYTES_PER_SECOND * s->syt_interval; + used = max(used, 0); + p->midi_fifo_used[port] = used; + + return used < p->midi_fifo_limit; +} + +static inline void midi_use_bytes(struct amdtp_stream *s, + unsigned int port, unsigned int count) +{ + struct amdtp_dot *p = s->protocol; + + p->midi_fifo_used[port] += amdtp_rate_table[s->sfc] * count; +} + +static void write_midi_messages(struct amdtp_stream *s, __be32 *buffer, + unsigned int data_blocks) +{ + struct amdtp_dot *p = s->protocol; + unsigned int f, port; + int len; + u8 *b; + + for (f = 0; f < data_blocks; f++) { + port = (s->data_block_counter + f) % 8; + b = (u8 *)&buffer[0]; + + len = 0; + if (port < MAX_MIDI_PORTS && + midi_ratelimit_per_packet(s, port) && + p->midi[port] != NULL) + len = snd_rawmidi_transmit(p->midi[port], b + 1, 2); + + if (len > 0) { + /* + * Upper 4 bits of LSB represent port number. + * - 0000b: physical MIDI port 1. + * - 0010b: physical MIDI port 2. + * - 1110b: console MIDI port. + */ + if (port == 2) + b[3] = 0xe0; + else if (port == 1) + b[3] = 0x20; + else + b[3] = 0x00; + b[3] |= len; + midi_use_bytes(s, port, len); + } else { + b[1] = 0; + b[2] = 0; + b[3] = 0; + } + b[0] = 0x80; + + buffer += s->data_block_quadlets; + } +} + +static void read_midi_messages(struct amdtp_stream *s, __be32 *buffer, + unsigned int data_blocks) +{ + struct amdtp_dot *p = s->protocol; + unsigned int f, port, len; + u8 *b; + + for (f = 0; f < data_blocks; f++) { + b = (u8 *)&buffer[0]; + + len = b[3] & 0x0f; + if (len > 0) { + /* + * Upper 4 bits of LSB represent port number. + * - 0000b: physical MIDI port 1. Use port 0. + * - 1110b: console MIDI port. Use port 2. + */ + if (b[3] >> 4 > 0) + port = 2; + else + port = 0; + + if (port < MAX_MIDI_PORTS && p->midi[port]) + snd_rawmidi_receive(p->midi[port], b + 1, len); + } + + buffer += s->data_block_quadlets; + } +} + +int amdtp_dot_add_pcm_hw_constraints(struct amdtp_stream *s, + struct snd_pcm_runtime *runtime) +{ + int err; + + /* This protocol delivers 24 bit data in 32bit data channel. */ + err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24); + if (err < 0) + return err; + + return amdtp_stream_add_pcm_hw_constraints(s, runtime); +} + +void amdtp_dot_midi_trigger(struct amdtp_stream *s, unsigned int port, + struct snd_rawmidi_substream *midi) +{ + struct amdtp_dot *p = s->protocol; + + if (port < MAX_MIDI_PORTS) + WRITE_ONCE(p->midi[port], midi); +} + +static unsigned int process_tx_data_blocks(struct amdtp_stream *s, + __be32 *buffer, + unsigned int data_blocks, + unsigned int *syt) +{ + struct snd_pcm_substream *pcm; + unsigned int pcm_frames; + + pcm = READ_ONCE(s->pcm); + if (pcm) { + read_pcm_s32(s, pcm, buffer, data_blocks); + pcm_frames = data_blocks; + } else { + pcm_frames = 0; + } + + read_midi_messages(s, buffer, data_blocks); + + return pcm_frames; +} + +static unsigned int process_rx_data_blocks(struct amdtp_stream *s, + __be32 *buffer, + unsigned int data_blocks, + unsigned int *syt) +{ + struct snd_pcm_substream *pcm; + unsigned int pcm_frames; + + pcm = READ_ONCE(s->pcm); + if (pcm) { + write_pcm_s32(s, pcm, buffer, data_blocks); + pcm_frames = data_blocks; + } else { + write_pcm_silence(s, buffer, data_blocks); + pcm_frames = 0; + } + + write_midi_messages(s, buffer, data_blocks); + + return pcm_frames; +} + +int amdtp_dot_init(struct amdtp_stream *s, struct fw_unit *unit, + enum amdtp_stream_direction dir) +{ + amdtp_stream_process_data_blocks_t process_data_blocks; + enum cip_flags flags; + + /* Use different mode between incoming/outgoing. */ + if (dir == AMDTP_IN_STREAM) { + flags = CIP_NONBLOCKING; + process_data_blocks = process_tx_data_blocks; + } else { + flags = CIP_BLOCKING; + process_data_blocks = process_rx_data_blocks; + } + + return amdtp_stream_init(s, unit, dir, flags, CIP_FMT_AM, + process_data_blocks, sizeof(struct amdtp_dot)); +} + +void amdtp_dot_reset(struct amdtp_stream *s) +{ + struct amdtp_dot *p = s->protocol; + + p->state.carry = 0x00; + p->state.idx = 0x00; + p->state.off = 0; +} diff --git a/sound/firewire/digi00x/digi00x-hwdep.c b/sound/firewire/digi00x/digi00x-hwdep.c new file mode 100644 index 000000000..426cd39e0 --- /dev/null +++ b/sound/firewire/digi00x/digi00x-hwdep.c @@ -0,0 +1,199 @@ +/* + * digi00x-hwdep.c - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +/* + * This codes give three functionality. + * + * 1.get firewire node information + * 2.get notification about starting/stopping stream + * 3.lock/unlock stream + * 4.get asynchronous messaging + */ + +#include "digi00x.h" + +static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count, + loff_t *offset) +{ + struct snd_dg00x *dg00x = hwdep->private_data; + DEFINE_WAIT(wait); + union snd_firewire_event event; + + spin_lock_irq(&dg00x->lock); + + while (!dg00x->dev_lock_changed && dg00x->msg == 0) { + prepare_to_wait(&dg00x->hwdep_wait, &wait, TASK_INTERRUPTIBLE); + spin_unlock_irq(&dg00x->lock); + schedule(); + finish_wait(&dg00x->hwdep_wait, &wait); + if (signal_pending(current)) + return -ERESTARTSYS; + spin_lock_irq(&dg00x->lock); + } + + memset(&event, 0, sizeof(event)); + if (dg00x->dev_lock_changed) { + event.lock_status.type = SNDRV_FIREWIRE_EVENT_LOCK_STATUS; + event.lock_status.status = (dg00x->dev_lock_count > 0); + dg00x->dev_lock_changed = false; + + count = min_t(long, count, sizeof(event.lock_status)); + } else { + event.digi00x_message.type = + SNDRV_FIREWIRE_EVENT_DIGI00X_MESSAGE; + event.digi00x_message.message = dg00x->msg; + dg00x->msg = 0; + + count = min_t(long, count, sizeof(event.digi00x_message)); + } + + spin_unlock_irq(&dg00x->lock); + + if (copy_to_user(buf, &event, count)) + return -EFAULT; + + return count; +} + +static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file, + poll_table *wait) +{ + struct snd_dg00x *dg00x = hwdep->private_data; + __poll_t events; + + poll_wait(file, &dg00x->hwdep_wait, wait); + + spin_lock_irq(&dg00x->lock); + if (dg00x->dev_lock_changed || dg00x->msg) + events = EPOLLIN | EPOLLRDNORM; + else + events = 0; + spin_unlock_irq(&dg00x->lock); + + return events; +} + +static int hwdep_get_info(struct snd_dg00x *dg00x, void __user *arg) +{ + struct fw_device *dev = fw_parent_device(dg00x->unit); + struct snd_firewire_get_info info; + + memset(&info, 0, sizeof(info)); + info.type = SNDRV_FIREWIRE_TYPE_DIGI00X; + info.card = dev->card->index; + *(__be32 *)&info.guid[0] = cpu_to_be32(dev->config_rom[3]); + *(__be32 *)&info.guid[4] = cpu_to_be32(dev->config_rom[4]); + strlcpy(info.device_name, dev_name(&dev->device), + sizeof(info.device_name)); + + if (copy_to_user(arg, &info, sizeof(info))) + return -EFAULT; + + return 0; +} + +static int hwdep_lock(struct snd_dg00x *dg00x) +{ + int err; + + spin_lock_irq(&dg00x->lock); + + if (dg00x->dev_lock_count == 0) { + dg00x->dev_lock_count = -1; + err = 0; + } else { + err = -EBUSY; + } + + spin_unlock_irq(&dg00x->lock); + + return err; +} + +static int hwdep_unlock(struct snd_dg00x *dg00x) +{ + int err; + + spin_lock_irq(&dg00x->lock); + + if (dg00x->dev_lock_count == -1) { + dg00x->dev_lock_count = 0; + err = 0; + } else { + err = -EBADFD; + } + + spin_unlock_irq(&dg00x->lock); + + return err; +} + +static int hwdep_release(struct snd_hwdep *hwdep, struct file *file) +{ + struct snd_dg00x *dg00x = hwdep->private_data; + + spin_lock_irq(&dg00x->lock); + if (dg00x->dev_lock_count == -1) + dg00x->dev_lock_count = 0; + spin_unlock_irq(&dg00x->lock); + + return 0; +} + +static int hwdep_ioctl(struct snd_hwdep *hwdep, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct snd_dg00x *dg00x = hwdep->private_data; + + switch (cmd) { + case SNDRV_FIREWIRE_IOCTL_GET_INFO: + return hwdep_get_info(dg00x, (void __user *)arg); + case SNDRV_FIREWIRE_IOCTL_LOCK: + return hwdep_lock(dg00x); + case SNDRV_FIREWIRE_IOCTL_UNLOCK: + return hwdep_unlock(dg00x); + default: + return -ENOIOCTLCMD; + } +} + +#ifdef CONFIG_COMPAT +static int hwdep_compat_ioctl(struct snd_hwdep *hwdep, struct file *file, + unsigned int cmd, unsigned long arg) +{ + return hwdep_ioctl(hwdep, file, cmd, + (unsigned long)compat_ptr(arg)); +} +#else +#define hwdep_compat_ioctl NULL +#endif + +int snd_dg00x_create_hwdep_device(struct snd_dg00x *dg00x) +{ + static const struct snd_hwdep_ops ops = { + .read = hwdep_read, + .release = hwdep_release, + .poll = hwdep_poll, + .ioctl = hwdep_ioctl, + .ioctl_compat = hwdep_compat_ioctl, + }; + struct snd_hwdep *hwdep; + int err; + + err = snd_hwdep_new(dg00x->card, "Digi00x", 0, &hwdep); + if (err < 0) + return err; + + strcpy(hwdep->name, "Digi00x"); + hwdep->iface = SNDRV_HWDEP_IFACE_FW_DIGI00X; + hwdep->ops = ops; + hwdep->private_data = dg00x; + hwdep->exclusive = true; + + return err; +} diff --git a/sound/firewire/digi00x/digi00x-midi.c b/sound/firewire/digi00x/digi00x-midi.c new file mode 100644 index 000000000..7ab3d0810 --- /dev/null +++ b/sound/firewire/digi00x/digi00x-midi.c @@ -0,0 +1,169 @@ +/* + * digi00x-midi.h - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "digi00x.h" + +static int midi_open(struct snd_rawmidi_substream *substream) +{ + struct snd_dg00x *dg00x = substream->rmidi->private_data; + int err; + + err = snd_dg00x_stream_lock_try(dg00x); + if (err < 0) + return err; + + mutex_lock(&dg00x->mutex); + dg00x->substreams_counter++; + err = snd_dg00x_stream_start_duplex(dg00x, 0); + mutex_unlock(&dg00x->mutex); + if (err < 0) + snd_dg00x_stream_lock_release(dg00x); + + return err; +} + +static int midi_close(struct snd_rawmidi_substream *substream) +{ + struct snd_dg00x *dg00x = substream->rmidi->private_data; + + mutex_lock(&dg00x->mutex); + dg00x->substreams_counter--; + snd_dg00x_stream_stop_duplex(dg00x); + mutex_unlock(&dg00x->mutex); + + snd_dg00x_stream_lock_release(dg00x); + return 0; +} + +static void midi_capture_trigger(struct snd_rawmidi_substream *substream, + int up) +{ + struct snd_dg00x *dg00x = substream->rmidi->private_data; + unsigned int port; + unsigned long flags; + + if (substream->rmidi->device == 0) + port = substream->number; + else + port = 2; + + spin_lock_irqsave(&dg00x->lock, flags); + + if (up) + amdtp_dot_midi_trigger(&dg00x->tx_stream, port, substream); + else + amdtp_dot_midi_trigger(&dg00x->tx_stream, port, NULL); + + spin_unlock_irqrestore(&dg00x->lock, flags); +} + +static void midi_playback_trigger(struct snd_rawmidi_substream *substream, + int up) +{ + struct snd_dg00x *dg00x = substream->rmidi->private_data; + unsigned int port; + unsigned long flags; + + if (substream->rmidi->device == 0) + port = substream->number; + else + port = 2; + + spin_lock_irqsave(&dg00x->lock, flags); + + if (up) + amdtp_dot_midi_trigger(&dg00x->rx_stream, port, substream); + else + amdtp_dot_midi_trigger(&dg00x->rx_stream, port, NULL); + + spin_unlock_irqrestore(&dg00x->lock, flags); +} + +static void set_substream_names(struct snd_dg00x *dg00x, + struct snd_rawmidi *rmidi, bool is_console) +{ + struct snd_rawmidi_substream *subs; + struct snd_rawmidi_str *str; + int i; + + for (i = 0; i < 2; ++i) { + str = &rmidi->streams[i]; + + list_for_each_entry(subs, &str->substreams, list) { + if (!is_console) { + snprintf(subs->name, sizeof(subs->name), + "%s MIDI %d", + dg00x->card->shortname, + subs->number + 1); + } else { + snprintf(subs->name, sizeof(subs->name), + "%s control", + dg00x->card->shortname); + } + } + } +} + +static int add_substream_pair(struct snd_dg00x *dg00x, unsigned int out_ports, + unsigned int in_ports, bool is_console) +{ + static const struct snd_rawmidi_ops capture_ops = { + .open = midi_open, + .close = midi_close, + .trigger = midi_capture_trigger, + }; + static const struct snd_rawmidi_ops playback_ops = { + .open = midi_open, + .close = midi_close, + .trigger = midi_playback_trigger, + }; + const char *label; + struct snd_rawmidi *rmidi; + int err; + + /* Add physical midi ports. */ + err = snd_rawmidi_new(dg00x->card, dg00x->card->driver, is_console, + out_ports, in_ports, &rmidi); + if (err < 0) + return err; + rmidi->private_data = dg00x; + + if (!is_console) + label = "%s control"; + else + label = "%s MIDI"; + snprintf(rmidi->name, sizeof(rmidi->name), label, + dg00x->card->shortname); + + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &playback_ops); + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &capture_ops); + + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT | + SNDRV_RAWMIDI_INFO_OUTPUT | + SNDRV_RAWMIDI_INFO_DUPLEX; + + set_substream_names(dg00x, rmidi, is_console); + + return 0; +} + +int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x) +{ + int err; + + /* Add physical midi ports. */ + err = add_substream_pair(dg00x, DOT_MIDI_OUT_PORTS, DOT_MIDI_IN_PORTS, + false); + if (err < 0) + return err; + + if (dg00x->is_console) + err = add_substream_pair(dg00x, 1, 1, true); + + return err; +} diff --git a/sound/firewire/digi00x/digi00x-pcm.c b/sound/firewire/digi00x/digi00x-pcm.c new file mode 100644 index 000000000..fdcff0460 --- /dev/null +++ b/sound/firewire/digi00x/digi00x-pcm.c @@ -0,0 +1,370 @@ +/* + * digi00x-pcm.c - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "digi00x.h" + +static int hw_rule_rate(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *r = + hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + const struct snd_interval *c = + hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_interval t = { + .min = UINT_MAX, .max = 0, .integer = 1, + }; + unsigned int i; + + for (i = 0; i < SND_DG00X_RATE_COUNT; i++) { + if (!snd_interval_test(c, + snd_dg00x_stream_pcm_channels[i])) + continue; + + t.min = min(t.min, snd_dg00x_stream_rates[i]); + t.max = max(t.max, snd_dg00x_stream_rates[i]); + } + + return snd_interval_refine(r, &t); +} + +static int hw_rule_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *c = + hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); + const struct snd_interval *r = + hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval t = { + .min = UINT_MAX, .max = 0, .integer = 1, + }; + unsigned int i; + + for (i = 0; i < SND_DG00X_RATE_COUNT; i++) { + if (!snd_interval_test(r, snd_dg00x_stream_rates[i])) + continue; + + t.min = min(t.min, snd_dg00x_stream_pcm_channels[i]); + t.max = max(t.max, snd_dg00x_stream_pcm_channels[i]); + } + + return snd_interval_refine(c, &t); +} + +static int pcm_init_hw_params(struct snd_dg00x *dg00x, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_pcm_hardware *hw = &runtime->hw; + struct amdtp_stream *s; + int err; + + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; + s = &dg00x->tx_stream; + } else { + substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; + s = &dg00x->rx_stream; + } + + hw->channels_min = 10; + hw->channels_max = 18; + + hw->rates = SNDRV_PCM_RATE_44100 | + SNDRV_PCM_RATE_48000 | + SNDRV_PCM_RATE_88200 | + SNDRV_PCM_RATE_96000; + snd_pcm_limit_hw_rates(runtime); + + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_channels, NULL, + SNDRV_PCM_HW_PARAM_RATE, -1); + if (err < 0) + return err; + + err = snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + hw_rule_rate, NULL, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (err < 0) + return err; + + return amdtp_dot_add_pcm_hw_constraints(s, substream->runtime); +} + +static int pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_dg00x *dg00x = substream->private_data; + enum snd_dg00x_clock clock; + bool detect; + unsigned int rate; + int err; + + err = snd_dg00x_stream_lock_try(dg00x); + if (err < 0) + goto end; + + err = pcm_init_hw_params(dg00x, substream); + if (err < 0) + goto err_locked; + + /* Check current clock source. */ + err = snd_dg00x_stream_get_clock(dg00x, &clock); + if (err < 0) + goto err_locked; + if (clock != SND_DG00X_CLOCK_INTERNAL) { + err = snd_dg00x_stream_check_external_clock(dg00x, &detect); + if (err < 0) + goto err_locked; + if (!detect) { + err = -EBUSY; + goto err_locked; + } + } + + if ((clock != SND_DG00X_CLOCK_INTERNAL) || + amdtp_stream_pcm_running(&dg00x->rx_stream) || + amdtp_stream_pcm_running(&dg00x->tx_stream)) { + err = snd_dg00x_stream_get_external_rate(dg00x, &rate); + if (err < 0) + goto err_locked; + substream->runtime->hw.rate_min = rate; + substream->runtime->hw.rate_max = rate; + } + + snd_pcm_set_sync(substream); +end: + return err; +err_locked: + snd_dg00x_stream_lock_release(dg00x); + return err; +} + +static int pcm_close(struct snd_pcm_substream *substream) +{ + struct snd_dg00x *dg00x = substream->private_data; + + snd_dg00x_stream_lock_release(dg00x); + + return 0; +} + +static int pcm_capture_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_dg00x *dg00x = substream->private_data; + int err; + + err = snd_pcm_lib_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); + if (err < 0) + return err; + + if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { + mutex_lock(&dg00x->mutex); + dg00x->substreams_counter++; + mutex_unlock(&dg00x->mutex); + } + + return 0; +} + +static int pcm_playback_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_dg00x *dg00x = substream->private_data; + int err; + + err = snd_pcm_lib_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); + if (err < 0) + return err; + + if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { + mutex_lock(&dg00x->mutex); + dg00x->substreams_counter++; + mutex_unlock(&dg00x->mutex); + } + + return 0; +} + +static int pcm_capture_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_dg00x *dg00x = substream->private_data; + + mutex_lock(&dg00x->mutex); + + if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) + dg00x->substreams_counter--; + + snd_dg00x_stream_stop_duplex(dg00x); + + mutex_unlock(&dg00x->mutex); + + return snd_pcm_lib_free_vmalloc_buffer(substream); +} + +static int pcm_playback_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_dg00x *dg00x = substream->private_data; + + mutex_lock(&dg00x->mutex); + + if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) + dg00x->substreams_counter--; + + snd_dg00x_stream_stop_duplex(dg00x); + + mutex_unlock(&dg00x->mutex); + + return snd_pcm_lib_free_vmalloc_buffer(substream); +} + +static int pcm_capture_prepare(struct snd_pcm_substream *substream) +{ + struct snd_dg00x *dg00x = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + mutex_lock(&dg00x->mutex); + + err = snd_dg00x_stream_start_duplex(dg00x, runtime->rate); + if (err >= 0) + amdtp_stream_pcm_prepare(&dg00x->tx_stream); + + mutex_unlock(&dg00x->mutex); + + return err; +} + +static int pcm_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_dg00x *dg00x = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + mutex_lock(&dg00x->mutex); + + err = snd_dg00x_stream_start_duplex(dg00x, runtime->rate); + if (err >= 0) { + amdtp_stream_pcm_prepare(&dg00x->rx_stream); + amdtp_dot_reset(&dg00x->rx_stream); + } + + mutex_unlock(&dg00x->mutex); + + return err; +} + +static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_dg00x *dg00x = substream->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + amdtp_stream_pcm_trigger(&dg00x->tx_stream, substream); + break; + case SNDRV_PCM_TRIGGER_STOP: + amdtp_stream_pcm_trigger(&dg00x->tx_stream, NULL); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_dg00x *dg00x = substream->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + amdtp_stream_pcm_trigger(&dg00x->rx_stream, substream); + break; + case SNDRV_PCM_TRIGGER_STOP: + amdtp_stream_pcm_trigger(&dg00x->rx_stream, NULL); + break; + default: + return -EINVAL; + } + + return 0; +} + +static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) +{ + struct snd_dg00x *dg00x = sbstrm->private_data; + + return amdtp_stream_pcm_pointer(&dg00x->tx_stream); +} + +static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) +{ + struct snd_dg00x *dg00x = sbstrm->private_data; + + return amdtp_stream_pcm_pointer(&dg00x->rx_stream); +} + +static int pcm_capture_ack(struct snd_pcm_substream *substream) +{ + struct snd_dg00x *dg00x = substream->private_data; + + return amdtp_stream_pcm_ack(&dg00x->tx_stream); +} + +static int pcm_playback_ack(struct snd_pcm_substream *substream) +{ + struct snd_dg00x *dg00x = substream->private_data; + + return amdtp_stream_pcm_ack(&dg00x->rx_stream); +} + +int snd_dg00x_create_pcm_devices(struct snd_dg00x *dg00x) +{ + static const struct snd_pcm_ops capture_ops = { + .open = pcm_open, + .close = pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = pcm_capture_hw_params, + .hw_free = pcm_capture_hw_free, + .prepare = pcm_capture_prepare, + .trigger = pcm_capture_trigger, + .pointer = pcm_capture_pointer, + .ack = pcm_capture_ack, + .page = snd_pcm_lib_get_vmalloc_page, + }; + static const struct snd_pcm_ops playback_ops = { + .open = pcm_open, + .close = pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = pcm_playback_hw_params, + .hw_free = pcm_playback_hw_free, + .prepare = pcm_playback_prepare, + .trigger = pcm_playback_trigger, + .pointer = pcm_playback_pointer, + .ack = pcm_playback_ack, + .page = snd_pcm_lib_get_vmalloc_page, + }; + struct snd_pcm *pcm; + int err; + + err = snd_pcm_new(dg00x->card, dg00x->card->driver, 0, 1, 1, &pcm); + if (err < 0) + return err; + + pcm->private_data = dg00x; + snprintf(pcm->name, sizeof(pcm->name), + "%s PCM", dg00x->card->shortname); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops); + + return 0; +} diff --git a/sound/firewire/digi00x/digi00x-proc.c b/sound/firewire/digi00x/digi00x-proc.c new file mode 100644 index 000000000..6996d5a6f --- /dev/null +++ b/sound/firewire/digi00x/digi00x-proc.c @@ -0,0 +1,99 @@ +/* + * digi00x-proc.c - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "digi00x.h" + +static int get_optical_iface_mode(struct snd_dg00x *dg00x, + enum snd_dg00x_optical_mode *mode) +{ + __be32 data; + int err; + + err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_OPT_IFACE_MODE, + &data, sizeof(data), 0); + if (err >= 0) + *mode = be32_to_cpu(data) & 0x01; + + return err; +} + +static void proc_read_clock(struct snd_info_entry *entry, + struct snd_info_buffer *buf) +{ + static const char *const source_name[] = { + [SND_DG00X_CLOCK_INTERNAL] = "internal", + [SND_DG00X_CLOCK_SPDIF] = "s/pdif", + [SND_DG00X_CLOCK_ADAT] = "adat", + [SND_DG00X_CLOCK_WORD] = "word clock", + }; + static const char *const optical_name[] = { + [SND_DG00X_OPT_IFACE_MODE_ADAT] = "adat", + [SND_DG00X_OPT_IFACE_MODE_SPDIF] = "s/pdif", + }; + struct snd_dg00x *dg00x = entry->private_data; + enum snd_dg00x_optical_mode mode; + unsigned int rate; + enum snd_dg00x_clock clock; + bool detect; + + if (get_optical_iface_mode(dg00x, &mode) < 0) + return; + if (snd_dg00x_stream_get_local_rate(dg00x, &rate) < 0) + return; + if (snd_dg00x_stream_get_clock(dg00x, &clock) < 0) + return; + + snd_iprintf(buf, "Optical mode: %s\n", optical_name[mode]); + snd_iprintf(buf, "Sampling Rate: %d\n", rate); + snd_iprintf(buf, "Clock Source: %s\n", source_name[clock]); + + if (clock == SND_DG00X_CLOCK_INTERNAL) + return; + + if (snd_dg00x_stream_check_external_clock(dg00x, &detect) < 0) + return; + snd_iprintf(buf, "External source: %s\n", detect ? "detected" : "not"); + if (!detect) + return; + + if (snd_dg00x_stream_get_external_rate(dg00x, &rate) >= 0) + snd_iprintf(buf, "External sampling rate: %d\n", rate); +} + +void snd_dg00x_proc_init(struct snd_dg00x *dg00x) +{ + struct snd_info_entry *root, *entry; + + /* + * All nodes are automatically removed at snd_card_disconnect(), + * by following to link list. + */ + root = snd_info_create_card_entry(dg00x->card, "firewire", + dg00x->card->proc_root); + if (root == NULL) + return; + + root->mode = S_IFDIR | 0555; + if (snd_info_register(root) < 0) { + snd_info_free_entry(root); + return; + } + + entry = snd_info_create_card_entry(dg00x->card, "clock", root); + if (entry == NULL) { + snd_info_free_entry(root); + return; + } + + snd_info_set_text_ops(entry, dg00x, proc_read_clock); + if (snd_info_register(entry) < 0) { + snd_info_free_entry(entry); + snd_info_free_entry(root); + } +} diff --git a/sound/firewire/digi00x/digi00x-stream.c b/sound/firewire/digi00x/digi00x-stream.c new file mode 100644 index 000000000..4d3b4ebbd --- /dev/null +++ b/sound/firewire/digi00x/digi00x-stream.c @@ -0,0 +1,422 @@ +/* + * digi00x-stream.c - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "digi00x.h" + +#define CALLBACK_TIMEOUT 500 + +const unsigned int snd_dg00x_stream_rates[SND_DG00X_RATE_COUNT] = { + [SND_DG00X_RATE_44100] = 44100, + [SND_DG00X_RATE_48000] = 48000, + [SND_DG00X_RATE_88200] = 88200, + [SND_DG00X_RATE_96000] = 96000, +}; + +/* Multi Bit Linear Audio data channels for each sampling transfer frequency. */ +const unsigned int +snd_dg00x_stream_pcm_channels[SND_DG00X_RATE_COUNT] = { + /* Analog/ADAT/SPDIF */ + [SND_DG00X_RATE_44100] = (8 + 8 + 2), + [SND_DG00X_RATE_48000] = (8 + 8 + 2), + /* Analog/SPDIF */ + [SND_DG00X_RATE_88200] = (8 + 2), + [SND_DG00X_RATE_96000] = (8 + 2), +}; + +int snd_dg00x_stream_get_local_rate(struct snd_dg00x *dg00x, unsigned int *rate) +{ + u32 data; + __be32 reg; + int err; + + err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_LOCAL_RATE, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + data = be32_to_cpu(reg) & 0x0f; + if (data < ARRAY_SIZE(snd_dg00x_stream_rates)) + *rate = snd_dg00x_stream_rates[data]; + else + err = -EIO; + + return err; +} + +int snd_dg00x_stream_set_local_rate(struct snd_dg00x *dg00x, unsigned int rate) +{ + __be32 reg; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(snd_dg00x_stream_rates); i++) { + if (rate == snd_dg00x_stream_rates[i]) + break; + } + if (i == ARRAY_SIZE(snd_dg00x_stream_rates)) + return -EINVAL; + + reg = cpu_to_be32(i); + return snd_fw_transaction(dg00x->unit, TCODE_WRITE_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_LOCAL_RATE, + ®, sizeof(reg), 0); +} + +int snd_dg00x_stream_get_clock(struct snd_dg00x *dg00x, + enum snd_dg00x_clock *clock) +{ + __be32 reg; + int err; + + err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_CLOCK_SOURCE, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + *clock = be32_to_cpu(reg) & 0x0f; + if (*clock >= SND_DG00X_CLOCK_COUNT) + err = -EIO; + + return err; +} + +int snd_dg00x_stream_check_external_clock(struct snd_dg00x *dg00x, bool *detect) +{ + __be32 reg; + int err; + + err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_DETECT_EXTERNAL, + ®, sizeof(reg), 0); + if (err >= 0) + *detect = be32_to_cpu(reg) > 0; + + return err; +} + +int snd_dg00x_stream_get_external_rate(struct snd_dg00x *dg00x, + unsigned int *rate) +{ + u32 data; + __be32 reg; + int err; + + err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_EXTERNAL_RATE, + ®, sizeof(reg), 0); + if (err < 0) + return err; + + data = be32_to_cpu(reg) & 0x0f; + if (data < ARRAY_SIZE(snd_dg00x_stream_rates)) + *rate = snd_dg00x_stream_rates[data]; + /* This means desync. */ + else + err = -EBUSY; + + return err; +} + +static void finish_session(struct snd_dg00x *dg00x) +{ + __be32 data = cpu_to_be32(0x00000003); + + snd_fw_transaction(dg00x->unit, TCODE_WRITE_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_STREAMING_SET, + &data, sizeof(data), 0); +} + +static int begin_session(struct snd_dg00x *dg00x) +{ + __be32 data; + u32 curr; + int err; + + err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_STREAMING_STATE, + &data, sizeof(data), 0); + if (err < 0) + goto error; + curr = be32_to_cpu(data); + + if (curr == 0) + curr = 2; + + curr--; + while (curr > 0) { + data = cpu_to_be32(curr); + err = snd_fw_transaction(dg00x->unit, + TCODE_WRITE_QUADLET_REQUEST, + DG00X_ADDR_BASE + + DG00X_OFFSET_STREAMING_SET, + &data, sizeof(data), 0); + if (err < 0) + goto error; + + msleep(20); + curr--; + } + + return 0; +error: + finish_session(dg00x); + return err; +} + +static void release_resources(struct snd_dg00x *dg00x) +{ + __be32 data = 0; + + /* Unregister isochronous channels for both direction. */ + snd_fw_transaction(dg00x->unit, TCODE_WRITE_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_ISOC_CHANNELS, + &data, sizeof(data), 0); + + /* Release isochronous resources. */ + fw_iso_resources_free(&dg00x->tx_resources); + fw_iso_resources_free(&dg00x->rx_resources); +} + +static int keep_resources(struct snd_dg00x *dg00x, unsigned int rate) +{ + unsigned int i; + __be32 data; + int err; + + /* Check sampling rate. */ + for (i = 0; i < SND_DG00X_RATE_COUNT; i++) { + if (snd_dg00x_stream_rates[i] == rate) + break; + } + if (i == SND_DG00X_RATE_COUNT) + return -EINVAL; + + /* Keep resources for out-stream. */ + err = amdtp_dot_set_parameters(&dg00x->rx_stream, rate, + snd_dg00x_stream_pcm_channels[i]); + if (err < 0) + return err; + err = fw_iso_resources_allocate(&dg00x->rx_resources, + amdtp_stream_get_max_payload(&dg00x->rx_stream), + fw_parent_device(dg00x->unit)->max_speed); + if (err < 0) + return err; + + /* Keep resources for in-stream. */ + err = amdtp_dot_set_parameters(&dg00x->tx_stream, rate, + snd_dg00x_stream_pcm_channels[i]); + if (err < 0) + return err; + err = fw_iso_resources_allocate(&dg00x->tx_resources, + amdtp_stream_get_max_payload(&dg00x->tx_stream), + fw_parent_device(dg00x->unit)->max_speed); + if (err < 0) + goto error; + + /* Register isochronous channels for both direction. */ + data = cpu_to_be32((dg00x->tx_resources.channel << 16) | + dg00x->rx_resources.channel); + err = snd_fw_transaction(dg00x->unit, TCODE_WRITE_QUADLET_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_ISOC_CHANNELS, + &data, sizeof(data), 0); + if (err < 0) + goto error; + + return 0; +error: + release_resources(dg00x); + return err; +} + +int snd_dg00x_stream_init_duplex(struct snd_dg00x *dg00x) +{ + int err; + + /* For out-stream. */ + err = fw_iso_resources_init(&dg00x->rx_resources, dg00x->unit); + if (err < 0) + goto error; + err = amdtp_dot_init(&dg00x->rx_stream, dg00x->unit, AMDTP_OUT_STREAM); + if (err < 0) + goto error; + + /* For in-stream. */ + err = fw_iso_resources_init(&dg00x->tx_resources, dg00x->unit); + if (err < 0) + goto error; + err = amdtp_dot_init(&dg00x->tx_stream, dg00x->unit, AMDTP_IN_STREAM); + if (err < 0) + goto error; + + return 0; +error: + snd_dg00x_stream_destroy_duplex(dg00x); + return err; +} + +/* + * This function should be called before starting streams or after stopping + * streams. + */ +void snd_dg00x_stream_destroy_duplex(struct snd_dg00x *dg00x) +{ + amdtp_stream_destroy(&dg00x->rx_stream); + fw_iso_resources_destroy(&dg00x->rx_resources); + + amdtp_stream_destroy(&dg00x->tx_stream); + fw_iso_resources_destroy(&dg00x->tx_resources); +} + +int snd_dg00x_stream_start_duplex(struct snd_dg00x *dg00x, unsigned int rate) +{ + unsigned int curr_rate; + int err = 0; + + if (dg00x->substreams_counter == 0) + goto end; + + /* Check current sampling rate. */ + err = snd_dg00x_stream_get_local_rate(dg00x, &curr_rate); + if (err < 0) + goto error; + if (rate == 0) + rate = curr_rate; + if (curr_rate != rate || + amdtp_streaming_error(&dg00x->tx_stream) || + amdtp_streaming_error(&dg00x->rx_stream)) { + finish_session(dg00x); + + amdtp_stream_stop(&dg00x->tx_stream); + amdtp_stream_stop(&dg00x->rx_stream); + release_resources(dg00x); + } + + /* + * No packets are transmitted without receiving packets, reagardless of + * which source of clock is used. + */ + if (!amdtp_stream_running(&dg00x->rx_stream)) { + err = snd_dg00x_stream_set_local_rate(dg00x, rate); + if (err < 0) + goto error; + + err = keep_resources(dg00x, rate); + if (err < 0) + goto error; + + err = begin_session(dg00x); + if (err < 0) + goto error; + + err = amdtp_stream_start(&dg00x->rx_stream, + dg00x->rx_resources.channel, + fw_parent_device(dg00x->unit)->max_speed); + if (err < 0) + goto error; + + if (!amdtp_stream_wait_callback(&dg00x->rx_stream, + CALLBACK_TIMEOUT)) { + err = -ETIMEDOUT; + goto error; + } + } + + /* + * The value of SYT field in transmitted packets is always 0x0000. Thus, + * duplex streams with timestamp synchronization cannot be built. + */ + if (!amdtp_stream_running(&dg00x->tx_stream)) { + err = amdtp_stream_start(&dg00x->tx_stream, + dg00x->tx_resources.channel, + fw_parent_device(dg00x->unit)->max_speed); + if (err < 0) + goto error; + + if (!amdtp_stream_wait_callback(&dg00x->tx_stream, + CALLBACK_TIMEOUT)) { + err = -ETIMEDOUT; + goto error; + } + } +end: + return err; +error: + finish_session(dg00x); + + amdtp_stream_stop(&dg00x->tx_stream); + amdtp_stream_stop(&dg00x->rx_stream); + release_resources(dg00x); + + return err; +} + +void snd_dg00x_stream_stop_duplex(struct snd_dg00x *dg00x) +{ + if (dg00x->substreams_counter > 0) + return; + + amdtp_stream_stop(&dg00x->tx_stream); + amdtp_stream_stop(&dg00x->rx_stream); + finish_session(dg00x); + release_resources(dg00x); + + /* + * Just after finishing the session, the device may lost transmitting + * functionality for a short time. + */ + msleep(50); +} + +void snd_dg00x_stream_update_duplex(struct snd_dg00x *dg00x) +{ + fw_iso_resources_update(&dg00x->tx_resources); + fw_iso_resources_update(&dg00x->rx_resources); + + amdtp_stream_update(&dg00x->tx_stream); + amdtp_stream_update(&dg00x->rx_stream); +} + +void snd_dg00x_stream_lock_changed(struct snd_dg00x *dg00x) +{ + dg00x->dev_lock_changed = true; + wake_up(&dg00x->hwdep_wait); +} + +int snd_dg00x_stream_lock_try(struct snd_dg00x *dg00x) +{ + int err; + + spin_lock_irq(&dg00x->lock); + + /* user land lock this */ + if (dg00x->dev_lock_count < 0) { + err = -EBUSY; + goto end; + } + + /* this is the first time */ + if (dg00x->dev_lock_count++ == 0) + snd_dg00x_stream_lock_changed(dg00x); + err = 0; +end: + spin_unlock_irq(&dg00x->lock); + return err; +} + +void snd_dg00x_stream_lock_release(struct snd_dg00x *dg00x) +{ + spin_lock_irq(&dg00x->lock); + + if (WARN_ON(dg00x->dev_lock_count <= 0)) + goto end; + if (--dg00x->dev_lock_count == 0) + snd_dg00x_stream_lock_changed(dg00x); +end: + spin_unlock_irq(&dg00x->lock); +} diff --git a/sound/firewire/digi00x/digi00x-transaction.c b/sound/firewire/digi00x/digi00x-transaction.c new file mode 100644 index 000000000..af9bc8504 --- /dev/null +++ b/sound/firewire/digi00x/digi00x-transaction.c @@ -0,0 +1,84 @@ +/* + * digi00x-transaction.c - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include <sound/asound.h> +#include "digi00x.h" + +static void handle_unknown_message(struct snd_dg00x *dg00x, + unsigned long long offset, __be32 *buf) +{ + unsigned long flags; + + spin_lock_irqsave(&dg00x->lock, flags); + dg00x->msg = be32_to_cpu(*buf); + spin_unlock_irqrestore(&dg00x->lock, flags); + + wake_up(&dg00x->hwdep_wait); +} + +static void handle_message(struct fw_card *card, struct fw_request *request, + int tcode, int destination, int source, + int generation, unsigned long long offset, + void *data, size_t length, void *callback_data) +{ + struct snd_dg00x *dg00x = callback_data; + __be32 *buf = (__be32 *)data; + + fw_send_response(card, request, RCODE_COMPLETE); + + if (offset == dg00x->async_handler.offset) + handle_unknown_message(dg00x, offset, buf); +} + +int snd_dg00x_transaction_reregister(struct snd_dg00x *dg00x) +{ + struct fw_device *device = fw_parent_device(dg00x->unit); + __be32 data[2]; + + /* Unknown. 4bytes. */ + data[0] = cpu_to_be32((device->card->node_id << 16) | + (dg00x->async_handler.offset >> 32)); + data[1] = cpu_to_be32(dg00x->async_handler.offset); + return snd_fw_transaction(dg00x->unit, TCODE_WRITE_BLOCK_REQUEST, + DG00X_ADDR_BASE + DG00X_OFFSET_MESSAGE_ADDR, + &data, sizeof(data), 0); +} + +void snd_dg00x_transaction_unregister(struct snd_dg00x *dg00x) +{ + if (dg00x->async_handler.callback_data == NULL) + return; + + fw_core_remove_address_handler(&dg00x->async_handler); + + dg00x->async_handler.callback_data = NULL; +} + +int snd_dg00x_transaction_register(struct snd_dg00x *dg00x) +{ + static const struct fw_address_region resp_register_region = { + .start = 0xffffe0000000ull, + .end = 0xffffe000ffffull, + }; + int err; + + dg00x->async_handler.length = 4; + dg00x->async_handler.address_callback = handle_message; + dg00x->async_handler.callback_data = dg00x; + + err = fw_core_add_address_handler(&dg00x->async_handler, + &resp_register_region); + if (err < 0) + return err; + + err = snd_dg00x_transaction_reregister(dg00x); + if (err < 0) + snd_dg00x_transaction_unregister(dg00x); + + return err; +} diff --git a/sound/firewire/digi00x/digi00x.c b/sound/firewire/digi00x/digi00x.c new file mode 100644 index 000000000..bf53e3427 --- /dev/null +++ b/sound/firewire/digi00x/digi00x.c @@ -0,0 +1,230 @@ +/* + * digi00x.c - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "digi00x.h" + +MODULE_DESCRIPTION("Digidesign Digi 002/003 family Driver"); +MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); +MODULE_LICENSE("GPL v2"); + +#define VENDOR_DIGIDESIGN 0x00a07e +#define MODEL_CONSOLE 0x000001 +#define MODEL_RACK 0x000002 +#define SPEC_VERSION 0x000001 + +static int name_card(struct snd_dg00x *dg00x) +{ + struct fw_device *fw_dev = fw_parent_device(dg00x->unit); + char name[32] = {0}; + char *model; + int err; + + err = fw_csr_string(dg00x->unit->directory, CSR_MODEL, name, + sizeof(name)); + if (err < 0) + return err; + + model = skip_spaces(name); + + strcpy(dg00x->card->driver, "Digi00x"); + strcpy(dg00x->card->shortname, model); + strcpy(dg00x->card->mixername, model); + snprintf(dg00x->card->longname, sizeof(dg00x->card->longname), + "Digidesign %s, GUID %08x%08x at %s, S%d", model, + fw_dev->config_rom[3], fw_dev->config_rom[4], + dev_name(&dg00x->unit->device), 100 << fw_dev->max_speed); + + return 0; +} + +static void dg00x_free(struct snd_dg00x *dg00x) +{ + snd_dg00x_stream_destroy_duplex(dg00x); + snd_dg00x_transaction_unregister(dg00x); + + fw_unit_put(dg00x->unit); + + mutex_destroy(&dg00x->mutex); + kfree(dg00x); +} + +static void dg00x_card_free(struct snd_card *card) +{ + dg00x_free(card->private_data); +} + +static void do_registration(struct work_struct *work) +{ + struct snd_dg00x *dg00x = + container_of(work, struct snd_dg00x, dwork.work); + int err; + + if (dg00x->registered) + return; + + err = snd_card_new(&dg00x->unit->device, -1, NULL, THIS_MODULE, 0, + &dg00x->card); + if (err < 0) + return; + + err = name_card(dg00x); + if (err < 0) + goto error; + + err = snd_dg00x_stream_init_duplex(dg00x); + if (err < 0) + goto error; + + snd_dg00x_proc_init(dg00x); + + err = snd_dg00x_create_pcm_devices(dg00x); + if (err < 0) + goto error; + + err = snd_dg00x_create_midi_devices(dg00x); + if (err < 0) + goto error; + + err = snd_dg00x_create_hwdep_device(dg00x); + if (err < 0) + goto error; + + err = snd_dg00x_transaction_register(dg00x); + if (err < 0) + goto error; + + err = snd_card_register(dg00x->card); + if (err < 0) + goto error; + + dg00x->card->private_free = dg00x_card_free; + dg00x->card->private_data = dg00x; + dg00x->registered = true; + + return; +error: + snd_dg00x_transaction_unregister(dg00x); + snd_dg00x_stream_destroy_duplex(dg00x); + snd_card_free(dg00x->card); + dev_info(&dg00x->unit->device, + "Sound card registration failed: %d\n", err); +} + +static int snd_dg00x_probe(struct fw_unit *unit, + const struct ieee1394_device_id *entry) +{ + struct snd_dg00x *dg00x; + + /* Allocate this independent of sound card instance. */ + dg00x = kzalloc(sizeof(struct snd_dg00x), GFP_KERNEL); + if (dg00x == NULL) + return -ENOMEM; + + dg00x->unit = fw_unit_get(unit); + dev_set_drvdata(&unit->device, dg00x); + + mutex_init(&dg00x->mutex); + spin_lock_init(&dg00x->lock); + init_waitqueue_head(&dg00x->hwdep_wait); + + dg00x->is_console = entry->model_id == MODEL_CONSOLE; + + /* Allocate and register this sound card later. */ + INIT_DEFERRABLE_WORK(&dg00x->dwork, do_registration); + snd_fw_schedule_registration(unit, &dg00x->dwork); + + return 0; +} + +static void snd_dg00x_update(struct fw_unit *unit) +{ + struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device); + + /* Postpone a workqueue for deferred registration. */ + if (!dg00x->registered) + snd_fw_schedule_registration(unit, &dg00x->dwork); + + snd_dg00x_transaction_reregister(dg00x); + + /* + * After registration, userspace can start packet streaming, then this + * code block works fine. + */ + if (dg00x->registered) { + mutex_lock(&dg00x->mutex); + snd_dg00x_stream_update_duplex(dg00x); + mutex_unlock(&dg00x->mutex); + } +} + +static void snd_dg00x_remove(struct fw_unit *unit) +{ + struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device); + + /* + * Confirm to stop the work for registration before the sound card is + * going to be released. The work is not scheduled again because bus + * reset handler is not called anymore. + */ + cancel_delayed_work_sync(&dg00x->dwork); + + if (dg00x->registered) { + /* No need to wait for releasing card object in this context. */ + snd_card_free_when_closed(dg00x->card); + } else { + /* Don't forget this case. */ + dg00x_free(dg00x); + } +} + +static const struct ieee1394_device_id snd_dg00x_id_table[] = { + /* Both of 002/003 use the same ID. */ + { + .match_flags = IEEE1394_MATCH_VENDOR_ID | + IEEE1394_MATCH_VERSION | + IEEE1394_MATCH_MODEL_ID, + .vendor_id = VENDOR_DIGIDESIGN, + .version = SPEC_VERSION, + .model_id = MODEL_CONSOLE, + }, + { + .match_flags = IEEE1394_MATCH_VENDOR_ID | + IEEE1394_MATCH_VERSION | + IEEE1394_MATCH_MODEL_ID, + .vendor_id = VENDOR_DIGIDESIGN, + .version = SPEC_VERSION, + .model_id = MODEL_RACK, + }, + {} +}; +MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table); + +static struct fw_driver dg00x_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "snd-firewire-digi00x", + .bus = &fw_bus_type, + }, + .probe = snd_dg00x_probe, + .update = snd_dg00x_update, + .remove = snd_dg00x_remove, + .id_table = snd_dg00x_id_table, +}; + +static int __init snd_dg00x_init(void) +{ + return driver_register(&dg00x_driver.driver); +} + +static void __exit snd_dg00x_exit(void) +{ + driver_unregister(&dg00x_driver.driver); +} + +module_init(snd_dg00x_init); +module_exit(snd_dg00x_exit); diff --git a/sound/firewire/digi00x/digi00x.h b/sound/firewire/digi00x/digi00x.h new file mode 100644 index 000000000..4dd1bbf2e --- /dev/null +++ b/sound/firewire/digi00x/digi00x.h @@ -0,0 +1,159 @@ +/* + * digi00x.h - a part of driver for Digidesign Digi 002/003 family + * + * Copyright (c) 2014-2015 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#ifndef SOUND_DIGI00X_H_INCLUDED +#define SOUND_DIGI00X_H_INCLUDED + +#include <linux/compat.h> +#include <linux/device.h> +#include <linux/firewire.h> +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/sched/signal.h> + +#include <sound/core.h> +#include <sound/initval.h> +#include <sound/info.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/firewire.h> +#include <sound/hwdep.h> +#include <sound/rawmidi.h> + +#include "../lib.h" +#include "../iso-resources.h" +#include "../amdtp-stream.h" + +struct snd_dg00x { + struct snd_card *card; + struct fw_unit *unit; + + struct mutex mutex; + spinlock_t lock; + + bool registered; + struct delayed_work dwork; + + struct amdtp_stream tx_stream; + struct fw_iso_resources tx_resources; + + struct amdtp_stream rx_stream; + struct fw_iso_resources rx_resources; + + unsigned int substreams_counter; + + /* for uapi */ + int dev_lock_count; + bool dev_lock_changed; + wait_queue_head_t hwdep_wait; + + /* For asynchronous messages. */ + struct fw_address_handler async_handler; + u32 msg; + + /* Console models have additional MIDI ports for control surface. */ + bool is_console; +}; + +#define DG00X_ADDR_BASE 0xffffe0000000ull + +#define DG00X_OFFSET_STREAMING_STATE 0x0000 +#define DG00X_OFFSET_STREAMING_SET 0x0004 +/* unknown but address in host space 0x0008 */ +/* For LSB of the address 0x000c */ +/* unknown 0x0010 */ +#define DG00X_OFFSET_MESSAGE_ADDR 0x0014 +/* For LSB of the address 0x0018 */ +/* unknown 0x001c */ +/* unknown 0x0020 */ +/* not used 0x0024--0x00ff */ +#define DG00X_OFFSET_ISOC_CHANNELS 0x0100 +/* unknown 0x0104 */ +/* unknown 0x0108 */ +/* unknown 0x010c */ +#define DG00X_OFFSET_LOCAL_RATE 0x0110 +#define DG00X_OFFSET_EXTERNAL_RATE 0x0114 +#define DG00X_OFFSET_CLOCK_SOURCE 0x0118 +#define DG00X_OFFSET_OPT_IFACE_MODE 0x011c +/* unknown 0x0120 */ +/* Mixer control on/off 0x0124 */ +/* unknown 0x0128 */ +#define DG00X_OFFSET_DETECT_EXTERNAL 0x012c +/* unknown 0x0138 */ +#define DG00X_OFFSET_MMC 0x0400 + +enum snd_dg00x_rate { + SND_DG00X_RATE_44100 = 0, + SND_DG00X_RATE_48000, + SND_DG00X_RATE_88200, + SND_DG00X_RATE_96000, + SND_DG00X_RATE_COUNT, +}; + +enum snd_dg00x_clock { + SND_DG00X_CLOCK_INTERNAL = 0, + SND_DG00X_CLOCK_SPDIF, + SND_DG00X_CLOCK_ADAT, + SND_DG00X_CLOCK_WORD, + SND_DG00X_CLOCK_COUNT, +}; + +enum snd_dg00x_optical_mode { + SND_DG00X_OPT_IFACE_MODE_ADAT = 0, + SND_DG00X_OPT_IFACE_MODE_SPDIF, + SND_DG00X_OPT_IFACE_MODE_COUNT, +}; + +#define DOT_MIDI_IN_PORTS 1 +#define DOT_MIDI_OUT_PORTS 2 + +int amdtp_dot_init(struct amdtp_stream *s, struct fw_unit *unit, + enum amdtp_stream_direction dir); +int amdtp_dot_set_parameters(struct amdtp_stream *s, unsigned int rate, + unsigned int pcm_channels); +void amdtp_dot_reset(struct amdtp_stream *s); +int amdtp_dot_add_pcm_hw_constraints(struct amdtp_stream *s, + struct snd_pcm_runtime *runtime); +void amdtp_dot_midi_trigger(struct amdtp_stream *s, unsigned int port, + struct snd_rawmidi_substream *midi); + +int snd_dg00x_transaction_register(struct snd_dg00x *dg00x); +int snd_dg00x_transaction_reregister(struct snd_dg00x *dg00x); +void snd_dg00x_transaction_unregister(struct snd_dg00x *dg00x); + +extern const unsigned int snd_dg00x_stream_rates[SND_DG00X_RATE_COUNT]; +extern const unsigned int snd_dg00x_stream_pcm_channels[SND_DG00X_RATE_COUNT]; +int snd_dg00x_stream_get_external_rate(struct snd_dg00x *dg00x, + unsigned int *rate); +int snd_dg00x_stream_get_local_rate(struct snd_dg00x *dg00x, + unsigned int *rate); +int snd_dg00x_stream_set_local_rate(struct snd_dg00x *dg00x, unsigned int rate); +int snd_dg00x_stream_get_clock(struct snd_dg00x *dg00x, + enum snd_dg00x_clock *clock); +int snd_dg00x_stream_check_external_clock(struct snd_dg00x *dg00x, + bool *detect); +int snd_dg00x_stream_init_duplex(struct snd_dg00x *dg00x); +int snd_dg00x_stream_start_duplex(struct snd_dg00x *dg00x, unsigned int rate); +void snd_dg00x_stream_stop_duplex(struct snd_dg00x *dg00x); +void snd_dg00x_stream_update_duplex(struct snd_dg00x *dg00x); +void snd_dg00x_stream_destroy_duplex(struct snd_dg00x *dg00x); + +void snd_dg00x_stream_lock_changed(struct snd_dg00x *dg00x); +int snd_dg00x_stream_lock_try(struct snd_dg00x *dg00x); +void snd_dg00x_stream_lock_release(struct snd_dg00x *dg00x); + +void snd_dg00x_proc_init(struct snd_dg00x *dg00x); + +int snd_dg00x_create_pcm_devices(struct snd_dg00x *dg00x); + +int snd_dg00x_create_midi_devices(struct snd_dg00x *dg00x); + +int snd_dg00x_create_hwdep_device(struct snd_dg00x *dg00x); +#endif |