#include "card.h"
#include "endpoint.h"
#include "pcm.h"
+#include "quirks.h"
#define EP_FLAG_ACTIVATED 0
#define EP_FLAG_RUNNING 1
*
* For implicit feedback, next_packet_size() is unused.
*/
-static int next_packet_size(struct snd_usb_endpoint *ep)
+int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep)
{
unsigned long flags;
int ret;
{
struct urb *urb = urb_ctx->urb;
+ if (unlikely(ep->skip_packets > 0)) {
+ ep->skip_packets--;
+ return;
+ }
+
if (ep->sync_slave)
snd_usb_handle_sync_urb(ep->sync_slave, ep, urb);
ep->retire_data_urb(ep->data_subs, urb);
}
-static void prepare_outbound_urb_sizes(struct snd_usb_endpoint *ep,
- struct snd_urb_ctx *ctx)
-{
- int i;
-
- for (i = 0; i < ctx->packets; ++i)
- ctx->packet_size[i] = next_packet_size(ep);
-}
-
/*
* Prepare a PLAYBACK urb for submission to the bus.
*/
/* no data provider, so send silence */
unsigned int offs = 0;
for (i = 0; i < ctx->packets; ++i) {
- int counts = ctx->packet_size[i];
+ int counts;
+
+ if (ctx->packet_size[i])
+ counts = ctx->packet_size[i];
+ else
+ counts = snd_usb_endpoint_next_packet_size(ep);
+
urb->iso_frame_desc[i].offset = offs * ep->stride;
urb->iso_frame_desc[i].length = counts * ep->stride;
offs += counts;
goto exit_clear;
}
- prepare_outbound_urb_sizes(ep, ctx);
prepare_outbound_urb(ep, ctx);
} else {
retire_inbound_urb(ep, ctx);
* configure a data endpoint
*/
static int data_ep_set_params(struct snd_usb_endpoint *ep,
- struct snd_pcm_hw_params *hw_params,
+ snd_pcm_format_t pcm_format,
+ unsigned int channels,
+ unsigned int period_bytes,
struct audioformat *fmt,
struct snd_usb_endpoint *sync_ep)
{
unsigned int maxsize, i, urb_packs, total_packs, packs_per_ms;
- int period_bytes = params_period_bytes(hw_params);
- int format = params_format(hw_params);
int is_playback = usb_pipeout(ep->pipe);
- int frame_bits = snd_pcm_format_physical_width(params_format(hw_params)) *
- params_channels(hw_params);
+ int frame_bits = snd_pcm_format_physical_width(pcm_format) * channels;
ep->datainterval = fmt->datainterval;
ep->stride = frame_bits >> 3;
- ep->silence_value = format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0;
+ ep->silence_value = pcm_format == SNDRV_PCM_FORMAT_U8 ? 0x80 : 0;
/* calculate max. frequency */
if (ep->maxpacksize) {
* configure a sync endpoint
*/
static int sync_ep_set_params(struct snd_usb_endpoint *ep,
- struct snd_pcm_hw_params *hw_params,
struct audioformat *fmt)
{
int i;
* snd_usb_endpoint_set_params: configure an snd_usb_endpoint
*
* @ep: the snd_usb_endpoint to configure
- * @hw_params: the hardware parameters
+ * @pcm_format: the audio fomat.
+ * @channels: the number of audio channels.
+ * @period_bytes: the number of bytes in one alsa period.
+ * @rate: the frame rate.
* @fmt: the USB audio format information
* @sync_ep: the sync endpoint to use, if any
*
* An endpoint that is already running can not be reconfigured.
*/
int snd_usb_endpoint_set_params(struct snd_usb_endpoint *ep,
- struct snd_pcm_hw_params *hw_params,
+ snd_pcm_format_t pcm_format,
+ unsigned int channels,
+ unsigned int period_bytes,
+ unsigned int rate,
struct audioformat *fmt,
struct snd_usb_endpoint *sync_ep)
{
ep->fill_max = !!(fmt->attributes & UAC_EP_CS_ATTR_FILL_MAX);
if (snd_usb_get_speed(ep->chip->dev) == USB_SPEED_FULL)
- ep->freqn = get_usb_full_speed_rate(params_rate(hw_params));
+ ep->freqn = get_usb_full_speed_rate(rate);
else
- ep->freqn = get_usb_high_speed_rate(params_rate(hw_params));
+ ep->freqn = get_usb_high_speed_rate(rate);
/* calculate the frequency in 16.16 format */
ep->freqm = ep->freqn;
switch (ep->type) {
case SND_USB_ENDPOINT_TYPE_DATA:
- err = data_ep_set_params(ep, hw_params, fmt, sync_ep);
+ err = data_ep_set_params(ep, pcm_format, channels,
+ period_bytes, fmt, sync_ep);
break;
case SND_USB_ENDPOINT_TYPE_SYNC:
- err = sync_ep_set_params(ep, hw_params, fmt);
+ err = sync_ep_set_params(ep, fmt);
break;
default:
err = -EINVAL;
/**
* snd_usb_endpoint_start: start an snd_usb_endpoint
*
- * @ep: the endpoint to start
+ * @ep: the endpoint to start
+ * @can_sleep: flag indicating whether the operation is executed in
+ * non-atomic context
*
* A call to this function will increment the use count of the endpoint.
* In case it is not already running, the URBs for this endpoint will be
*
* Returns an error if the URB submission failed, 0 in all other cases.
*/
-int snd_usb_endpoint_start(struct snd_usb_endpoint *ep)
+int snd_usb_endpoint_start(struct snd_usb_endpoint *ep, int can_sleep)
{
int err;
unsigned int i;
return 0;
/* just to be sure */
- deactivate_urbs(ep, 0, 1);
- wait_clear_urbs(ep);
+ deactivate_urbs(ep, 0, can_sleep);
+ if (can_sleep)
+ wait_clear_urbs(ep);
ep->active_mask = 0;
ep->unlink_mask = 0;
ep->phase = 0;
+ snd_usb_endpoint_start_quirk(ep);
+
/*
* If this endpoint has a data endpoint as implicit feedback source,
* don't start the urbs here. Instead, mark them all as available,
goto __error;
if (usb_pipeout(ep->pipe)) {
- prepare_outbound_urb_sizes(ep, urb->context);
prepare_outbound_urb(ep, urb->context);
} else {
prepare_inbound_urb(ep, urb->context);
projects / linux-drm-fsl-dcu.git / blobdiff