diff --git a/sound/firewire/fireface/Makefile b/sound/firewire/fireface/Makefile index b772fdc20101..e62693811519 100644 --- a/sound/firewire/fireface/Makefile +++ b/sound/firewire/fireface/Makefile @@ -1,3 +1,3 @@ snd-fireface-objs := ff.o ff-transaction.o ff-midi.o ff-proc.o amdtp-ff.o \ - ff-stream.o + ff-stream.o ff-pcm.o obj-$(CONFIG_SND_FIREFACE) += snd-fireface.o diff --git a/sound/firewire/fireface/ff-pcm.c b/sound/firewire/fireface/ff-pcm.c new file mode 100644 index 000000000000..d282467d39a6 --- /dev/null +++ b/sound/firewire/fireface/ff-pcm.c @@ -0,0 +1,395 @@ +/* + * ff-pcm.c - a part of driver for RME Fireface series + * + * Copyright (c) 2015-2017 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "ff.h" + +static inline unsigned int get_multiplier_mode_with_index(unsigned int index) +{ + return ((int)index - 1) / 2; +} + +static int hw_rule_rate(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + const unsigned int *pcm_channels = rule->private; + 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, mode; + + for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) { + mode = get_multiplier_mode_with_index(i); + if (!snd_interval_test(c, pcm_channels[mode])) + continue; + + t.min = min(t.min, amdtp_rate_table[i]); + t.max = max(t.max, amdtp_rate_table[i]); + } + + return snd_interval_refine(r, &t); +} + +static int hw_rule_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + const unsigned int *pcm_channels = rule->private; + 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, mode; + + for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) { + mode = get_multiplier_mode_with_index(i); + if (!snd_interval_test(r, amdtp_rate_table[i])) + continue; + + t.min = min(t.min, pcm_channels[mode]); + t.max = max(t.max, pcm_channels[mode]); + } + + return snd_interval_refine(c, &t); +} + +static void limit_channels_and_rates(struct snd_pcm_hardware *hw, + const unsigned int *pcm_channels) +{ + unsigned int mode; + unsigned int rate, channels; + int i; + + hw->channels_min = UINT_MAX; + hw->channels_max = 0; + hw->rate_min = UINT_MAX; + hw->rate_max = 0; + + for (i = 0; i < ARRAY_SIZE(amdtp_rate_table); i++) { + mode = get_multiplier_mode_with_index(i); + + channels = pcm_channels[mode]; + if (pcm_channels[mode] == 0) + continue; + hw->channels_min = min(hw->channels_min, channels); + hw->channels_max = max(hw->channels_max, channels); + + rate = amdtp_rate_table[i]; + hw->rates |= snd_pcm_rate_to_rate_bit(rate); + hw->rate_min = min(hw->rate_min, rate); + hw->rate_max = max(hw->rate_max, rate); + } +} + +static void limit_period_and_buffer(struct snd_pcm_hardware *hw) +{ + hw->periods_min = 2; /* SNDRV_PCM_INFO_BATCH */ + hw->periods_max = UINT_MAX; + + hw->period_bytes_min = 4 * hw->channels_max; /* bytes for a frame */ + + /* Just to prevent from allocating much pages. */ + hw->period_bytes_max = hw->period_bytes_min * 2048; + hw->buffer_bytes_max = hw->period_bytes_max * hw->periods_min; +} + +static int pcm_init_hw_params(struct snd_ff *ff, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct amdtp_stream *s; + const unsigned int *pcm_channels; + int err; + + runtime->hw.info = SNDRV_PCM_INFO_BATCH | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_JOINT_DUPLEX | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID; + + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; + s = &ff->tx_stream; + pcm_channels = ff->spec->pcm_capture_channels; + } else { + runtime->hw.formats = SNDRV_PCM_FMTBIT_S32; + s = &ff->rx_stream; + pcm_channels = ff->spec->pcm_playback_channels; + } + + /* limit rates */ + limit_channels_and_rates(&runtime->hw, pcm_channels); + limit_period_and_buffer(&runtime->hw); + + err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_channels, (void *)pcm_channels, + SNDRV_PCM_HW_PARAM_RATE, -1); + if (err < 0) + return err; + + err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + hw_rule_rate, (void *)pcm_channels, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + if (err < 0) + return err; + + return amdtp_ff_add_pcm_hw_constraints(s, runtime); +} + +static int pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_ff *ff = substream->private_data; + unsigned int rate; + enum snd_ff_clock_src src; + int i, err; + + err = pcm_init_hw_params(ff, substream); + if (err < 0) + return err; + + err = ff->spec->protocol->get_clock(ff, &rate, &src); + if (err < 0) + return err; + + if (src != SND_FF_CLOCK_SRC_INTERNAL) { + for (i = 0; i < CIP_SFC_COUNT; ++i) { + if (amdtp_rate_table[i] == rate) + break; + } + /* + * The unit is configured at sampling frequency which packet + * streaming engine can't support. + */ + if (i >= CIP_SFC_COUNT) + return -EIO; + + substream->runtime->hw.rate_min = rate; + substream->runtime->hw.rate_max = rate; + } else { + if (amdtp_stream_pcm_running(&ff->rx_stream) || + amdtp_stream_pcm_running(&ff->tx_stream)) { + rate = amdtp_rate_table[ff->rx_stream.sfc]; + substream->runtime->hw.rate_min = rate; + substream->runtime->hw.rate_max = rate; + } + } + + snd_pcm_set_sync(substream); + + return 0; +} + +static int pcm_close(struct snd_pcm_substream *substream) +{ + return 0; +} + +static int pcm_capture_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_ff *ff = 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(&ff->mutex); + ff->substreams_counter++; + mutex_unlock(&ff->mutex); + } + + return 0; +} + +static int pcm_playback_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_ff *ff = 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(&ff->mutex); + ff->substreams_counter++; + mutex_unlock(&ff->mutex); + } + + return 0; +} + +static int pcm_capture_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_ff *ff = substream->private_data; + + mutex_lock(&ff->mutex); + + if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) + ff->substreams_counter--; + + snd_ff_stream_stop_duplex(ff); + + mutex_unlock(&ff->mutex); + + return snd_pcm_lib_free_vmalloc_buffer(substream); +} + +static int pcm_playback_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_ff *ff = substream->private_data; + + mutex_lock(&ff->mutex); + + if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) + ff->substreams_counter--; + + snd_ff_stream_stop_duplex(ff); + + mutex_unlock(&ff->mutex); + + return snd_pcm_lib_free_vmalloc_buffer(substream); +} + +static int pcm_capture_prepare(struct snd_pcm_substream *substream) +{ + struct snd_ff *ff = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + mutex_lock(&ff->mutex); + + err = snd_ff_stream_start_duplex(ff, runtime->rate); + if (err >= 0) + amdtp_stream_pcm_prepare(&ff->tx_stream); + + mutex_unlock(&ff->mutex); + + return err; +} + +static int pcm_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_ff *ff = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + mutex_lock(&ff->mutex); + + err = snd_ff_stream_start_duplex(ff, runtime->rate); + if (err >= 0) + amdtp_stream_pcm_prepare(&ff->rx_stream); + + mutex_unlock(&ff->mutex); + + return err; +} + +static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_ff *ff = substream->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + amdtp_stream_pcm_trigger(&ff->tx_stream, substream); + break; + case SNDRV_PCM_TRIGGER_STOP: + amdtp_stream_pcm_trigger(&ff->tx_stream, NULL); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_ff *ff = substream->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + amdtp_stream_pcm_trigger(&ff->rx_stream, substream); + break; + case SNDRV_PCM_TRIGGER_STOP: + amdtp_stream_pcm_trigger(&ff->rx_stream, NULL); + break; + default: + return -EINVAL; + } + + return 0; +} + +static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstrm) +{ + struct snd_ff *ff = sbstrm->private_data; + + return amdtp_stream_pcm_pointer(&ff->tx_stream); +} + +static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstrm) +{ + struct snd_ff *ff = sbstrm->private_data; + + return amdtp_stream_pcm_pointer(&ff->rx_stream); +} + +static struct snd_pcm_ops pcm_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, + .page = snd_pcm_lib_get_vmalloc_page, +}; + +static struct snd_pcm_ops pcm_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, + .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, +}; + +int snd_ff_create_pcm_devices(struct snd_ff *ff) +{ + struct snd_pcm *pcm; + int err; + + err = snd_pcm_new(ff->card, ff->card->driver, 0, 1, 1, &pcm); + if (err < 0) + return err; + + pcm->private_data = ff; + snprintf(pcm->name, sizeof(pcm->name), + "%s PCM", ff->card->shortname); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops); + + return 0; +} diff --git a/sound/firewire/fireface/ff.c b/sound/firewire/fireface/ff.c index 6bdbebd9f61b..ff62d16fec0f 100644 --- a/sound/firewire/fireface/ff.c +++ b/sound/firewire/fireface/ff.c @@ -72,6 +72,10 @@ static void do_registration(struct work_struct *work) if (err < 0) goto error; + err = snd_ff_create_pcm_devices(ff); + if (err < 0) + goto error; + err = snd_card_register(ff->card); if (err < 0) goto error; diff --git a/sound/firewire/fireface/ff.h b/sound/firewire/fireface/ff.h index 6599c11744ae..0d5228c905ea 100644 --- a/sound/firewire/fireface/ff.h +++ b/sound/firewire/fireface/ff.h @@ -21,6 +21,8 @@ #include #include #include +#include +#include #include "../lib.h" #include "../amdtp-stream.h" @@ -124,4 +126,6 @@ void snd_ff_proc_init(struct snd_ff *ff); int snd_ff_create_midi_devices(struct snd_ff *ff); +int snd_ff_create_pcm_devices(struct snd_ff *ff); + #endif