linux_dsm_epyc7002/sound/firewire/oxfw/oxfw-pcm.c

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/*
* 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 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 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;
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 = 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);
limit_period_and_buffer(&runtime->hw);
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);
}
amdtp_am824_set_pcm_format(&oxfw->tx_stream, params_format(hw_params));
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);
}
amdtp_am824_set_pcm_format(&oxfw->rx_stream, params_format(hw_params));
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--;
ALSA: oxfw: Add support AMDTP in-stream Previous commit adds support for some devices which can capture PCM samples. These devices transmit AMDTP stream in non-blocking mode. This commit adds functionality to handle AMDTP incoming stream. OXFW seems to have two quirks: - Transmits packets with non-zero dbc in its beginning - Transmits packets with wrong values in syt field For the first quirk, this commit adds CIP_SKIP_INIT_DBC_CHECK flag for incoming stream to skip first check of dbc. For the second quirk, this commit doesn't add duplex stream which Fireworks/BeBoB drivers use. So OXFW driver generates syt value for outgoing stream. Here are examples of a sequence of packets transmitted by Behringer F-Control Audio 202. There are differences between sequences of syt value when OXFW driver transfers outgoing stream or not. When driver gives no outgoing stream: Index Payload CIP_Header_0 CIP_Header_1 38 14 00020092 900103D1 39 12 00020098 900102FF 40 12 0002009D 9001027F 41 14 000200A2 90010396 42 14 000200A8 900102E8 43 12 000200AE 90010219 44 14 000200B3 90010331 45 12 000200B9 9001025F 46 14 000200BE 90010376 47 12 000200C4 900102A1 00 12 000200C9 9001023E 01 14 000200CE 90010358 02 12 000200D4 90010289 03 16 000200D9 900103A3 04 12 000200E0 900102DD 05 14 000200E5 900103F1 06 12 000200EB 90010335 07 12 000200F0 90010263 08 14 000200F5 9001037C 09 12 000200FB 900102AE When driver gives outgoing stream: Index Payload CIP_Header_0 CIP_Header_1 38 12 000200BD 900104A8 39 14 000200C2 900104A8 40 12 000200C8 900104AC 41 14 000200CD 900104A9 42 12 000200D3 900104B1 43 14 000200D8 900104A8 44 12 000200DE 900104AA 45 14 000200E3 900104A9 46 14 000200E9 900104AE 47 12 000200EF 900104A8 00 14 000200F4 900104AD 01 12 000200FA 900104A7 02 14 000200FF 900104A9 03 12 00020005 900104A9 04 14 0002000A 900104B1 05 12 00020010 900104AA 06 14 00020015 900104AD 07 12 0002001B 900104A7 08 14 00020020 900104AC 09 12 00020026 900104A7 Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-08 22:10:46 +07:00
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);
ALSA: oxfw: Add support AMDTP in-stream Previous commit adds support for some devices which can capture PCM samples. These devices transmit AMDTP stream in non-blocking mode. This commit adds functionality to handle AMDTP incoming stream. OXFW seems to have two quirks: - Transmits packets with non-zero dbc in its beginning - Transmits packets with wrong values in syt field For the first quirk, this commit adds CIP_SKIP_INIT_DBC_CHECK flag for incoming stream to skip first check of dbc. For the second quirk, this commit doesn't add duplex stream which Fireworks/BeBoB drivers use. So OXFW driver generates syt value for outgoing stream. Here are examples of a sequence of packets transmitted by Behringer F-Control Audio 202. There are differences between sequences of syt value when OXFW driver transfers outgoing stream or not. When driver gives no outgoing stream: Index Payload CIP_Header_0 CIP_Header_1 38 14 00020092 900103D1 39 12 00020098 900102FF 40 12 0002009D 9001027F 41 14 000200A2 90010396 42 14 000200A8 900102E8 43 12 000200AE 90010219 44 14 000200B3 90010331 45 12 000200B9 9001025F 46 14 000200BE 90010376 47 12 000200C4 900102A1 00 12 000200C9 9001023E 01 14 000200CE 90010358 02 12 000200D4 90010289 03 16 000200D9 900103A3 04 12 000200E0 900102DD 05 14 000200E5 900103F1 06 12 000200EB 90010335 07 12 000200F0 90010263 08 14 000200F5 9001037C 09 12 000200FB 900102AE When driver gives outgoing stream: Index Payload CIP_Header_0 CIP_Header_1 38 12 000200BD 900104A8 39 14 000200C2 900104A8 40 12 000200C8 900104AC 41 14 000200CD 900104A9 42 12 000200D3 900104B1 43 14 000200D8 900104A8 44 12 000200DE 900104AA 45 14 000200E3 900104A9 46 14 000200E9 900104AE 47 12 000200EF 900104A8 00 14 000200F4 900104AD 01 12 000200FA 900104A7 02 14 000200FF 900104A9 03 12 00020005 900104A9 04 14 0002000A 900104B1 05 12 00020010 900104AA 06 14 00020015 900104AD 07 12 0002001B 900104A7 08 14 00020020 900104AC 09 12 00020026 900104A7 Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-12-08 22:10:46 +07:00
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);
}
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,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
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,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
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;
}