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V4L/DVB: dvb-usb: enable specifying a separate generic bulk ctrl response endpoint 

Some DVB USB devices use a separate endpoint for responses to control
messages sent with bulk transfers via the generic_bulk_ctrl_endpoint.
When generic_bulk_ctrl_endpoint_response is set, it will be used instead
of the generic_bulk_ctrl_endpoint when reading usb responses in the
dvb_usb_generic_rw helper function.

Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Reviewed-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Michael Krufky 2010-01-31 21:06:10 -03:00 committed by Mauro Carvalho Chehab
parent 727e625cc2
commit 4605664bd9
2 changed files with 9 additions and 0 deletions
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2
drivers/media/dvb/dvb-usb/dvb-usb-urb.c
View File

@ -42,6 +42,8 @@ int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf,
msleep(delay_ms);
ret = usb_bulk_msg(d->udev,usb_rcvbulkpipe(d->udev,
d->props.generic_bulk_ctrl_endpoint_response ?
d->props.generic_bulk_ctrl_endpoint_response :
d->props.generic_bulk_ctrl_endpoint),rbuf,rlen,&actlen,
2000);

7
drivers/media/dvb/dvb-usb/dvb-usb.h
View File

@ -198,6 +198,12 @@ struct dvb_usb_adapter_properties {
* is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write-
* helper functions.
*
* @generic_bulk_ctrl_endpoint_response: some DVB USB devices use a separate
* endpoint for responses to control messages sent with bulk transfers via
* the generic_bulk_ctrl_endpoint. When this is non-zero, this will be used
* instead of the generic_bulk_ctrl_endpoint when reading usb responses in
* the dvb_usb_generic_rw helper function.
*
* @num_device_descs: number of struct dvb_usb_device_description in @devices
* @devices: array of struct dvb_usb_device_description compatibles with these
* properties.
@ -239,6 +245,7 @@ struct dvb_usb_device_properties {
struct i2c_algorithm *i2c_algo;
int generic_bulk_ctrl_endpoint;
int generic_bulk_ctrl_endpoint_response;
int num_device_descs;
struct dvb_usb_device_description devices[12];