V4L/DVB (4643): Multi-input patch for DVB-USB device
This patch is the first commit of the Multiple Input Patch for the DVB-USB frame
work.
It changes the DVB-USB-device to be able to have more than one streaming input
(e.g. multiple DVB-T sources) on one device. This is a necessary feature for
the upcoming DiB7700 driven devices.
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-urb.c b/drivers/media/dvb/dvb-usb/dvb-usb-urb.c
index 88b2837..0aed7fd 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-urb.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-urb.c
@@ -1,9 +1,9 @@
/* dvb-usb-urb.c is part of the DVB USB library.
*
- * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
+ * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
* see dvb-usb-init.c for copyright information.
*
- * This file contains functions for initializing and handling the
+ * This file keeps functions for initializing and handling the
* USB and URB stuff.
*/
#include "dvb-usb-common.h"
@@ -64,260 +64,22 @@
}
EXPORT_SYMBOL(dvb_usb_generic_write);
-
-/* URB stuff for streaming */
-static void dvb_usb_urb_complete(struct urb *urb, struct pt_regs *ptregs)
+static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buffer, size_t length)
{
- struct dvb_usb_device *d = urb->context;
- int ptype = usb_pipetype(urb->pipe);
- int i;
- u8 *b;
-
- deb_ts("'%s' urb completed. feedcount: %d, status: %d, length: %d/%d, pack_num: %d, errors: %d\n",
- ptype == PIPE_ISOCHRONOUS ? "isoc" : "bulk", d->feedcount,
- urb->status,urb->actual_length,urb->transfer_buffer_length,
- urb->number_of_packets,urb->error_count);
-
- switch (urb->status) {
- case 0: /* success */
- break;
- case -ECONNRESET: /* kill */
- case -ENOENT:
- case -ESHUTDOWN:
- return;
- default: /* error */
- deb_ts("urb completition error %d.", urb->status);
- break;
- }
-
- if (d->feedcount > 0) {
- if (d->state & DVB_USB_STATE_DVB) {
- switch (ptype) {
- case PIPE_ISOCHRONOUS:
- b = (u8 *) urb->transfer_buffer;
- for (i = 0; i < urb->number_of_packets; i++) {
- if (urb->iso_frame_desc[i].status != 0)
- deb_ts("iso frame descriptor has an error: %d\n",urb->iso_frame_desc[i].status);
- else if (urb->iso_frame_desc[i].actual_length > 0) {
- dvb_dmx_swfilter(&d->demux,b + urb->iso_frame_desc[i].offset,
- urb->iso_frame_desc[i].actual_length);
- }
- urb->iso_frame_desc[i].status = 0;
- urb->iso_frame_desc[i].actual_length = 0;
- }
- debug_dump(b,20,deb_ts);
- break;
- case PIPE_BULK:
- if (urb->actual_length > 0)
- dvb_dmx_swfilter(&d->demux, (u8 *) urb->transfer_buffer,urb->actual_length);
- break;
- default:
- err("unkown endpoint type in completition handler.");
- return;
- }
- }
- }
-
- usb_submit_urb(urb,GFP_ATOMIC);
+ struct dvb_usb_adapter *adap = stream->user_priv;
+ if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB)
+ dvb_dmx_swfilter(&adap->demux, buffer, length);
}
-int dvb_usb_urb_kill(struct dvb_usb_device *d)
+int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap)
{
- int i;
- for (i = 0; i < d->urbs_submitted; i++) {
- deb_ts("killing URB no. %d.\n",i);
-
- /* stop the URB */
- usb_kill_urb(d->urb_list[i]);
- }
- d->urbs_submitted = 0;
- return 0;
+ adap->stream.udev = adap->dev->udev;
+ adap->stream.complete = dvb_usb_data_complete;
+ adap->stream.user_priv = adap;
+ return usb_urb_init(&adap->stream, &adap->props.stream);
}
-int dvb_usb_urb_submit(struct dvb_usb_device *d)
+int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap)
{
- int i,ret;
- for (i = 0; i < d->urbs_initialized; i++) {
- deb_ts("submitting URB no. %d\n",i);
- if ((ret = usb_submit_urb(d->urb_list[i],GFP_ATOMIC))) {
- err("could not submit URB no. %d - get them all back",i);
- dvb_usb_urb_kill(d);
- return ret;
- }
- d->urbs_submitted++;
- }
- return 0;
-}
-
-static int dvb_usb_free_stream_buffers(struct dvb_usb_device *d)
-{
- if (d->state & DVB_USB_STATE_URB_BUF) {
- while (d->buf_num) {
- d->buf_num--;
- deb_mem("freeing buffer %d\n",d->buf_num);
- usb_buffer_free(d->udev, d->buf_size,
- d->buf_list[d->buf_num], d->dma_addr[d->buf_num]);
- }
- kfree(d->buf_list);
- kfree(d->dma_addr);
- }
-
- d->state &= ~DVB_USB_STATE_URB_BUF;
-
- return 0;
-}
-
-static int dvb_usb_allocate_stream_buffers(struct dvb_usb_device *d, int num, unsigned long size)
-{
- d->buf_num = 0;
- d->buf_size = size;
-
- deb_mem("all in all I will use %lu bytes for streaming\n",num*size);
-
- if ((d->buf_list = kcalloc(num, sizeof(u8 *), GFP_ATOMIC)) == NULL)
- return -ENOMEM;
-
- if ((d->dma_addr = kcalloc(num, sizeof(dma_addr_t), GFP_ATOMIC)) == NULL) {
- kfree(d->buf_list);
- return -ENOMEM;
- }
-
- d->state |= DVB_USB_STATE_URB_BUF;
-
- for (d->buf_num = 0; d->buf_num < num; d->buf_num++) {
- deb_mem("allocating buffer %d\n",d->buf_num);
- if (( d->buf_list[d->buf_num] =
- usb_buffer_alloc(d->udev, size, SLAB_ATOMIC,
- &d->dma_addr[d->buf_num]) ) == NULL) {
- deb_mem("not enough memory for urb-buffer allocation.\n");
- dvb_usb_free_stream_buffers(d);
- return -ENOMEM;
- }
- deb_mem("buffer %d: %p (dma: %llu)\n",
- d->buf_num, d->buf_list[d->buf_num],
- (unsigned long long)d->dma_addr[d->buf_num]);
- memset(d->buf_list[d->buf_num],0,size);
- }
- deb_mem("allocation successful\n");
-
- return 0;
-}
-
-static int dvb_usb_bulk_urb_init(struct dvb_usb_device *d)
-{
- int i;
-
- if ((i = dvb_usb_allocate_stream_buffers(d,d->props.urb.count,
- d->props.urb.u.bulk.buffersize)) < 0)
- return i;
-
- /* allocate the URBs */
- for (i = 0; i < d->props.urb.count; i++) {
- if ((d->urb_list[i] = usb_alloc_urb(0,GFP_ATOMIC)) == NULL)
- return -ENOMEM;
-
- usb_fill_bulk_urb( d->urb_list[i], d->udev,
- usb_rcvbulkpipe(d->udev,d->props.urb.endpoint),
- d->buf_list[i],
- d->props.urb.u.bulk.buffersize,
- dvb_usb_urb_complete, d);
-
- d->urb_list[i]->transfer_flags = 0;
- d->urbs_initialized++;
- }
- return 0;
-}
-
-static int dvb_usb_isoc_urb_init(struct dvb_usb_device *d)
-{
- int i,j;
-
- if ((i = dvb_usb_allocate_stream_buffers(d,d->props.urb.count,
- d->props.urb.u.isoc.framesize*d->props.urb.u.isoc.framesperurb)) < 0)
- return i;
-
- /* allocate the URBs */
- for (i = 0; i < d->props.urb.count; i++) {
- struct urb *urb;
- int frame_offset = 0;
- if ((d->urb_list[i] =
- usb_alloc_urb(d->props.urb.u.isoc.framesperurb,GFP_ATOMIC)) == NULL)
- return -ENOMEM;
-
- urb = d->urb_list[i];
-
- urb->dev = d->udev;
- urb->context = d;
- urb->complete = dvb_usb_urb_complete;
- urb->pipe = usb_rcvisocpipe(d->udev,d->props.urb.endpoint);
- urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
- urb->interval = d->props.urb.u.isoc.interval;
- urb->number_of_packets = d->props.urb.u.isoc.framesperurb;
- urb->transfer_buffer_length = d->buf_size;
- urb->transfer_buffer = d->buf_list[i];
- urb->transfer_dma = d->dma_addr[i];
-
- for (j = 0; j < d->props.urb.u.isoc.framesperurb; j++) {
- urb->iso_frame_desc[j].offset = frame_offset;
- urb->iso_frame_desc[j].length = d->props.urb.u.isoc.framesize;
- frame_offset += d->props.urb.u.isoc.framesize;
- }
-
- d->urbs_initialized++;
- }
- return 0;
-
-}
-
-int dvb_usb_urb_init(struct dvb_usb_device *d)
-{
- /*
- * when reloading the driver w/o replugging the device
- * sometimes a timeout occures, this helps
- */
- if (d->props.generic_bulk_ctrl_endpoint != 0) {
- usb_clear_halt(d->udev,usb_sndbulkpipe(d->udev,d->props.generic_bulk_ctrl_endpoint));
- usb_clear_halt(d->udev,usb_rcvbulkpipe(d->udev,d->props.generic_bulk_ctrl_endpoint));
- }
- usb_clear_halt(d->udev,usb_rcvbulkpipe(d->udev,d->props.urb.endpoint));
-
- /* allocate the array for the data transfer URBs */
- d->urb_list = kzalloc(d->props.urb.count * sizeof(struct urb *),GFP_KERNEL);
- if (d->urb_list == NULL)
- return -ENOMEM;
- d->state |= DVB_USB_STATE_URB_LIST;
-
- switch (d->props.urb.type) {
- case DVB_USB_BULK:
- return dvb_usb_bulk_urb_init(d);
- case DVB_USB_ISOC:
- return dvb_usb_isoc_urb_init(d);
- default:
- err("unkown URB-type for data transfer.");
- return -EINVAL;
- }
-}
-
-int dvb_usb_urb_exit(struct dvb_usb_device *d)
-{
- int i;
-
- dvb_usb_urb_kill(d);
-
- if (d->state & DVB_USB_STATE_URB_LIST) {
- for (i = 0; i < d->urbs_initialized; i++) {
- if (d->urb_list[i] != NULL) {
- deb_mem("freeing URB no. %d.\n",i);
- /* free the URBs */
- usb_free_urb(d->urb_list[i]);
- }
- }
- d->urbs_initialized = 0;
- /* free the urb array */
- kfree(d->urb_list);
- d->state &= ~DVB_USB_STATE_URB_LIST;
- }
-
- dvb_usb_free_stream_buffers(d);
- return 0;
+ return usb_urb_exit(&adap->stream);
}