static int set_rate(struct snd_oxfw *oxfw, unsigned int rate)
{
int err;
err = avc_general_set_sig_fmt(oxfw->unit, rate,
AVC_GENERAL_PLUG_DIR_IN, 0);
if (err < 0)
goto end;
if (oxfw->has_output)
err = avc_general_set_sig_fmt(oxfw->unit, rate,
AVC_GENERAL_PLUG_DIR_OUT, 0);
end:
return err;
}
int
snd_bebob_stream_get_rate(struct snd_bebob *bebob, unsigned int *curr_rate)
{
unsigned int tx_rate, rx_rate, trials;
int err;
trials = 0;
do {
err = avc_general_get_sig_fmt(bebob->unit, &tx_rate,
AVC_GENERAL_PLUG_DIR_OUT, 0);
} while (err == -EAGAIN && ++trials < 3);
if (err < 0)
goto end;
trials = 0;
do {
err = avc_general_get_sig_fmt(bebob->unit, &rx_rate,
AVC_GENERAL_PLUG_DIR_IN, 0);
} while (err == -EAGAIN && ++trials < 3);
if (err < 0)
goto end;
*curr_rate = rx_rate;
if (rx_rate == tx_rate)
goto end;
/* synchronize receive stream rate to transmit stream rate */
err = avc_general_set_sig_fmt(bebob->unit, rx_rate,
AVC_GENERAL_PLUG_DIR_IN, 0);
end:
return err;
}
int
snd_bebob_stream_set_rate(struct snd_bebob *bebob, unsigned int rate)
{
int err;
err = avc_general_set_sig_fmt(bebob->unit, rate,
AVC_GENERAL_PLUG_DIR_OUT, 0);
if (err < 0)
goto end;
err = avc_general_set_sig_fmt(bebob->unit, rate,
AVC_GENERAL_PLUG_DIR_IN, 0);
if (err < 0)
goto end;
/*
* Some devices need a bit time for transition.
* 300msec is got by some experiments.
*/
msleep(300);
end:
return err;
}
int snd_bebob_set_rate(struct snd_bebob *bebob, unsigned int rate,
enum avc_general_plug_dir dir)
{
int err;
err = avc_general_set_sig_fmt(bebob->unit, rate, dir, 0);
if (err < 0)
goto end;
/* ACCEPTED or INTERIM is OK */
if ((err != 0x0f) && (err != 0x09)) {
dev_err(&bebob->unit->device,
"failed to set sampling rate\n");
err = -EIO;
}
end:
return err;
}
static int firewave_channels_constraint(struct snd_pcm_hw_params *params,
struct snd_pcm_hw_rule *rule)
{
static const struct snd_interval all_channels = { .min = 6, .max = 6 };
struct snd_interval *rate =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
struct snd_interval *channels =
hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
/* 32/44.1 kHz work only with all six channels */
if (snd_interval_max(rate) < 48000)
return snd_interval_refine(channels, &all_channels);
return 0;
}
static int firewave_constraints(struct snd_pcm_runtime *runtime)
{
static unsigned int channels_list[] = { 2, 6 };
static struct snd_pcm_hw_constraint_list channels_list_constraint = {
.count = 2,
.list = channels_list,
};
int err;
runtime->hw.rates = SNDRV_PCM_RATE_32000 |
SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_96000;
runtime->hw.channels_max = 6;
err = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
&channels_list_constraint);
if (err < 0)
return err;
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
firewave_rate_constraint, NULL,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
if (err < 0)
return err;
err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
firewave_channels_constraint, NULL,
SNDRV_PCM_HW_PARAM_RATE, -1);
if (err < 0)
return err;
return 0;
}
static int lacie_speakers_constraints(struct snd_pcm_runtime *runtime)
{
runtime->hw.rates = SNDRV_PCM_RATE_32000 |
SNDRV_PCM_RATE_44100 |
SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000;
return 0;
}
static int fwspk_open(struct snd_pcm_substream *substream)
{
static const struct snd_pcm_hardware hardware = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_BATCH |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_BLOCK_TRANSFER,
.formats = AMDTP_OUT_PCM_FORMAT_BITS,
.channels_min = 2,
.channels_max = 2,
.buffer_bytes_max = 4 * 1024 * 1024,
.period_bytes_min = 1,
.period_bytes_max = UINT_MAX,
.periods_min = 1,
.periods_max = UINT_MAX,
};
struct fwspk *fwspk = substream->private_data;
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
runtime->hw = hardware;
err = fwspk->device_info->pcm_constraints(runtime);
if (err < 0)
return err;
err = snd_pcm_limit_hw_rates(runtime);
if (err < 0)
return err;
err = amdtp_stream_add_pcm_hw_constraints(&fwspk->stream, runtime);
if (err < 0)
return err;
return 0;
}
static int fwspk_close(struct snd_pcm_substream *substream)
{
return 0;
}
static void fwspk_stop_stream(struct fwspk *fwspk)
{
if (amdtp_stream_running(&fwspk->stream)) {
amdtp_stream_stop(&fwspk->stream);
cmp_connection_break(&fwspk->connection);
}
}
static int fwspk_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct fwspk *fwspk = substream->private_data;
int err;
mutex_lock(&fwspk->mutex);
fwspk_stop_stream(fwspk);
mutex_unlock(&fwspk->mutex);
err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
params_buffer_bytes(hw_params));
if (err < 0)
goto error;
amdtp_stream_set_parameters(&fwspk->stream,
params_rate(hw_params),
params_channels(hw_params),
0);
amdtp_stream_set_pcm_format(&fwspk->stream,
params_format(hw_params));
err = avc_general_set_sig_fmt(fwspk->unit, params_rate(hw_params),
AVC_GENERAL_PLUG_DIR_IN, 0);
if (err < 0) {
dev_err(&fwspk->unit->device, "failed to set sample rate\n");
goto err_buffer;
}
return 0;
err_buffer:
snd_pcm_lib_free_vmalloc_buffer(substream);
error:
return err;
}
static int fwspk_hw_free(struct snd_pcm_substream *substream)
{
struct fwspk *fwspk = substream->private_data;
mutex_lock(&fwspk->mutex);
fwspk_stop_stream(fwspk);
mutex_unlock(&fwspk->mutex);
return snd_pcm_lib_free_vmalloc_buffer(substream);
}
static int fwspk_prepare(struct snd_pcm_substream *substream)
{
struct fwspk *fwspk = substream->private_data;
int err;
mutex_lock(&fwspk->mutex);
if (amdtp_streaming_error(&fwspk->stream))
fwspk_stop_stream(fwspk);
if (!amdtp_stream_running(&fwspk->stream)) {
err = cmp_connection_establish(&fwspk->connection,
amdtp_stream_get_max_payload(&fwspk->stream));
if (err < 0)
goto err_mutex;
err = amdtp_stream_start(&fwspk->stream,
fwspk->connection.resources.channel,
fwspk->connection.speed);
if (err < 0)
goto err_connection;
}
mutex_unlock(&fwspk->mutex);
amdtp_stream_pcm_prepare(&fwspk->stream);
return 0;
err_connection:
cmp_connection_break(&fwspk->connection);
err_mutex:
mutex_unlock(&fwspk->mutex);
return err;
}
static int fwspk_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct fwspk *fwspk = 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(&fwspk->stream, pcm);
return 0;
}
static snd_pcm_uframes_t fwspk_pointer(struct snd_pcm_substream *substream)
{
struct fwspk *fwspk = substream->private_data;
return amdtp_stream_pcm_pointer(&fwspk->stream);
}
static int fwspk_create_pcm(struct fwspk *fwspk)
{
static struct snd_pcm_ops ops = {
.open = fwspk_open,
.close = fwspk_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = fwspk_hw_params,
.hw_free = fwspk_hw_free,
.prepare = fwspk_prepare,
.trigger = fwspk_trigger,
.pointer = fwspk_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
struct snd_pcm *pcm;
int err;
err = snd_pcm_new(fwspk->card, "OXFW970", 0, 1, 0, &pcm);
if (err < 0)
return err;
pcm->private_data = fwspk;
strcpy(pcm->name, fwspk->device_info->short_name);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ops);
return 0;
}
enum control_action { CTL_READ, CTL_WRITE };
enum control_attribute {
CTL_MIN = 0x02,
CTL_MAX = 0x03,
CTL_CURRENT = 0x10,
};
static int fwspk_mute_command(struct fwspk *fwspk, bool *value,
enum control_action action)
{
u8 *buf;
u8 response_ok;
int err;
buf = kmalloc(11, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (action == CTL_READ) {
buf[0] = 0x01; /* AV/C, STATUS */
response_ok = 0x0c; /* STABLE */
} else {
buf[0] = 0x00; /* AV/C, CONTROL */
response_ok = 0x09; /* ACCEPTED */
}
buf[1] = 0x08; /* audio unit 0 */
buf[2] = 0xb8; /* FUNCTION BLOCK */
buf[3] = 0x81; /* function block type: feature */
buf[4] = fwspk->device_info->mute_fb_id; /* function block ID */
buf[5] = 0x10; /* control attribute: current */
buf[6] = 0x02; /* selector length */
buf[7] = 0x00; /* audio channel number */
buf[8] = 0x01; /* control selector: mute */
buf[9] = 0x01; /* control data length */
if (action == CTL_READ)
buf[10] = 0xff;
else
buf[10] = *value ? 0x70 : 0x60;
err = fcp_avc_transaction(fwspk->unit, buf, 11, buf, 11, 0x3fe);
if (err < 0)
goto error;
if (err < 11) {
dev_err(&fwspk->unit->device, "short FCP response\n");
err = -EIO;
goto error;
}
if (buf[0] != response_ok) {
dev_err(&fwspk->unit->device, "mute command failed\n");
err = -EIO;
goto error;
}
if (action == CTL_READ)
*value = buf[10] == 0x70;
err = 0;
error:
kfree(buf);
return err;
}
static int fwspk_volume_command(struct fwspk *fwspk, s16 *value,
unsigned int channel,
enum control_attribute attribute,
enum control_action action)
{
u8 *buf;
u8 response_ok;
int err;
buf = kmalloc(12, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (action == CTL_READ) {
buf[0] = 0x01; /* AV/C, STATUS */
response_ok = 0x0c; /* STABLE */
} else {
buf[0] = 0x00; /* AV/C, CONTROL */
response_ok = 0x09; /* ACCEPTED */
}
buf[1] = 0x08; /* audio unit 0 */
buf[2] = 0xb8; /* FUNCTION BLOCK */
buf[3] = 0x81; /* function block type: feature */
buf[4] = fwspk->device_info->volume_fb_id; /* function block ID */
buf[5] = attribute; /* control attribute */
buf[6] = 0x02; /* selector length */
buf[7] = channel; /* audio channel number */
buf[8] = 0x02; /* control selector: volume */
buf[9] = 0x02; /* control data length */
if (action == CTL_READ) {
buf[10] = 0xff;
buf[11] = 0xff;
} else {
buf[10] = *value >> 8;
buf[11] = *value;
}
err = fcp_avc_transaction(fwspk->unit, buf, 12, buf, 12, 0x3fe);
if (err < 0)
goto error;
if (err < 12) {
dev_err(&fwspk->unit->device, "short FCP response\n");
err = -EIO;
goto error;
}
if (buf[0] != response_ok) {
dev_err(&fwspk->unit->device, "volume command failed\n");
err = -EIO;
goto error;
}
if (action == CTL_READ)
*value = (buf[10] << 8) | buf[11];
err = 0;
error:
kfree(buf);
return err;
}
