summaryrefslogtreecommitdiffstats
path: root/sound/firewire/oxfw/oxfw-pcm.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--sound/firewire/oxfw/oxfw-pcm.c423
1 files changed, 423 insertions, 0 deletions
diff --git a/sound/firewire/oxfw/oxfw-pcm.c b/sound/firewire/oxfw/oxfw-pcm.c
new file mode 100644
index 000000000..b3f6503dd
--- /dev/null
+++ b/sound/firewire/oxfw/oxfw-pcm.c
@@ -0,0 +1,423 @@
+/*
+ * oxfw_pcm.c - a part of driver for OXFW970/971 based devices
+ *
+ * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "oxfw.h"
+
+static int hw_rule_rate(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ u8 **formats = 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
+ };
+ struct snd_oxfw_stream_formation formation;
+ int i, err;
+
+ for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
+ if (formats[i] == NULL)
+ continue;
+
+ err = snd_oxfw_stream_parse_format(formats[i], &formation);
+ if (err < 0)
+ continue;
+ if (!snd_interval_test(c, formation.pcm))
+ continue;
+
+ t.min = min(t.min, formation.rate);
+ t.max = max(t.max, formation.rate);
+
+ }
+ return snd_interval_refine(r, &t);
+}
+
+static int hw_rule_channels(struct snd_pcm_hw_params *params,
+ struct snd_pcm_hw_rule *rule)
+{
+ u8 **formats = 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_oxfw_stream_formation formation;
+ int i, j, err;
+ unsigned int count, list[SND_OXFW_STREAM_FORMAT_ENTRIES] = {0};
+
+ count = 0;
+ for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
+ if (formats[i] == NULL)
+ break;
+
+ err = snd_oxfw_stream_parse_format(formats[i], &formation);
+ if (err < 0)
+ continue;
+ if (!snd_interval_test(r, formation.rate))
+ continue;
+ if (list[count] == formation.pcm)
+ continue;
+
+ for (j = 0; j < ARRAY_SIZE(list); j++) {
+ if (list[j] == formation.pcm)
+ break;
+ }
+ if (j == ARRAY_SIZE(list)) {
+ list[count] = formation.pcm;
+ if (++count == ARRAY_SIZE(list))
+ break;
+ }
+ }
+
+ return snd_interval_list(c, count, list, 0);
+}
+
+static void limit_channels_and_rates(struct snd_pcm_hardware *hw, u8 **formats)
+{
+ struct snd_oxfw_stream_formation formation;
+ int i, err;
+
+ hw->channels_min = UINT_MAX;
+ hw->channels_max = 0;
+
+ hw->rate_min = UINT_MAX;
+ hw->rate_max = 0;
+ hw->rates = 0;
+
+ for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
+ if (formats[i] == NULL)
+ break;
+
+ err = snd_oxfw_stream_parse_format(formats[i], &formation);
+ if (err < 0)
+ continue;
+
+ hw->channels_min = min(hw->channels_min, formation.pcm);
+ hw->channels_max = max(hw->channels_max, formation.pcm);
+
+ hw->rate_min = min(hw->rate_min, formation.rate);
+ hw->rate_max = max(hw->rate_max, formation.rate);
+ hw->rates |= snd_pcm_rate_to_rate_bit(formation.rate);
+ }
+}
+
+static int init_hw_params(struct snd_oxfw *oxfw,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ u8 **formats;
+ struct amdtp_stream *stream;
+ int err;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS;
+ stream = &oxfw->tx_stream;
+ formats = oxfw->tx_stream_formats;
+ } else {
+ runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS;
+ stream = &oxfw->rx_stream;
+ formats = oxfw->rx_stream_formats;
+ }
+
+ limit_channels_and_rates(&runtime->hw, formats);
+
+ err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+ hw_rule_channels, formats,
+ SNDRV_PCM_HW_PARAM_RATE, -1);
+ if (err < 0)
+ goto end;
+
+ err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ hw_rule_rate, formats,
+ SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+ if (err < 0)
+ goto end;
+
+ err = amdtp_am824_add_pcm_hw_constraints(stream, runtime);
+end:
+ return err;
+}
+
+static int limit_to_current_params(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+ struct snd_oxfw_stream_formation formation;
+ enum avc_general_plug_dir dir;
+ int err;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ dir = AVC_GENERAL_PLUG_DIR_OUT;
+ else
+ dir = AVC_GENERAL_PLUG_DIR_IN;
+
+ err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation);
+ if (err < 0)
+ goto end;
+
+ substream->runtime->hw.channels_min = formation.pcm;
+ substream->runtime->hw.channels_max = formation.pcm;
+ substream->runtime->hw.rate_min = formation.rate;
+ substream->runtime->hw.rate_max = formation.rate;
+end:
+ return err;
+}
+
+static int pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+ int err;
+
+ err = snd_oxfw_stream_lock_try(oxfw);
+ if (err < 0)
+ goto end;
+
+ err = init_hw_params(oxfw, substream);
+ if (err < 0)
+ goto err_locked;
+
+ /*
+ * When any PCM streams are already running, the available sampling
+ * rate is limited at current value.
+ */
+ if (amdtp_stream_pcm_running(&oxfw->tx_stream) ||
+ amdtp_stream_pcm_running(&oxfw->rx_stream)) {
+ err = limit_to_current_params(substream);
+ if (err < 0)
+ goto end;
+ }
+
+ snd_pcm_set_sync(substream);
+end:
+ return err;
+err_locked:
+ snd_oxfw_stream_lock_release(oxfw);
+ return err;
+}
+
+static int pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+
+ snd_oxfw_stream_lock_release(oxfw);
+ return 0;
+}
+
+static int pcm_capture_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_oxfw *oxfw = 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(&oxfw->mutex);
+ oxfw->capture_substreams++;
+ mutex_unlock(&oxfw->mutex);
+ }
+
+ return 0;
+}
+static int pcm_playback_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_oxfw *oxfw = 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(&oxfw->mutex);
+ oxfw->playback_substreams++;
+ mutex_unlock(&oxfw->mutex);
+ }
+
+ return 0;
+}
+
+static int pcm_capture_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+
+ mutex_lock(&oxfw->mutex);
+
+ if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
+ oxfw->capture_substreams--;
+
+ snd_oxfw_stream_stop_simplex(oxfw, &oxfw->tx_stream);
+
+ mutex_unlock(&oxfw->mutex);
+
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
+}
+static int pcm_playback_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+
+ mutex_lock(&oxfw->mutex);
+
+ if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
+ oxfw->playback_substreams--;
+
+ snd_oxfw_stream_stop_simplex(oxfw, &oxfw->rx_stream);
+
+ mutex_unlock(&oxfw->mutex);
+
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
+}
+
+static int pcm_capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err;
+
+ mutex_lock(&oxfw->mutex);
+ err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->tx_stream,
+ runtime->rate, runtime->channels);
+ mutex_unlock(&oxfw->mutex);
+ if (err < 0)
+ goto end;
+
+ amdtp_stream_pcm_prepare(&oxfw->tx_stream);
+end:
+ return err;
+}
+static int pcm_playback_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err;
+
+ mutex_lock(&oxfw->mutex);
+ err = snd_oxfw_stream_start_simplex(oxfw, &oxfw->rx_stream,
+ runtime->rate, runtime->channels);
+ mutex_unlock(&oxfw->mutex);
+ if (err < 0)
+ goto end;
+
+ amdtp_stream_pcm_prepare(&oxfw->rx_stream);
+end:
+ return err;
+}
+
+static int pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+ struct snd_pcm_substream *pcm;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ pcm = substream;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ pcm = NULL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ amdtp_stream_pcm_trigger(&oxfw->tx_stream, pcm);
+ return 0;
+}
+static int pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+ struct snd_pcm_substream *pcm;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ pcm = substream;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ pcm = NULL;
+ break;
+ default:
+ return -EINVAL;
+ }
+ amdtp_stream_pcm_trigger(&oxfw->rx_stream, pcm);
+ return 0;
+}
+
+static snd_pcm_uframes_t pcm_capture_pointer(struct snd_pcm_substream *sbstm)
+{
+ struct snd_oxfw *oxfw = sbstm->private_data;
+
+ return amdtp_stream_pcm_pointer(&oxfw->tx_stream);
+}
+static snd_pcm_uframes_t pcm_playback_pointer(struct snd_pcm_substream *sbstm)
+{
+ struct snd_oxfw *oxfw = sbstm->private_data;
+
+ return amdtp_stream_pcm_pointer(&oxfw->rx_stream);
+}
+
+static int pcm_capture_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+
+ return amdtp_stream_pcm_ack(&oxfw->tx_stream);
+}
+
+static int pcm_playback_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_oxfw *oxfw = substream->private_data;
+
+ return amdtp_stream_pcm_ack(&oxfw->rx_stream);
+}
+
+int snd_oxfw_create_pcm(struct snd_oxfw *oxfw)
+{
+ 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;
+ unsigned int cap = 0;
+ int err;
+
+ if (oxfw->has_output)
+ cap = 1;
+
+ err = snd_pcm_new(oxfw->card, oxfw->card->driver, 0, 1, cap, &pcm);
+ if (err < 0)
+ return err;
+
+ pcm->private_data = oxfw;
+ strcpy(pcm->name, oxfw->card->shortname);
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops);
+ if (cap > 0)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 15:48:50 +0000