| | 1 | /* dvb-usb-urb.c is part of the DVB USB library. |
| | 2 | * |
| | 3 | * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) |
| | 4 | * see dvb-usb-init.c for copyright information. |
| | 5 | * |
| | 6 | * This file keeps functions for initializing and handling the |
| | 7 | * USB and URB stuff. |
| | 8 | */ |
| | 9 | #include "dvb-usb-common.h" |
| | 10 | |
| | 11 | int dvb_usb_generic_rw(struct dvb_usb_device *d, u8 *wbuf, u16 wlen, u8 *rbuf, |
| | 12 | u16 rlen, int delay_ms) |
| | 13 | { |
| | 14 | int actlen,ret = -ENOMEM; |
| | 15 | |
| | 16 | if (!d || wbuf == NULL || wlen == 0) |
| | 17 | return -EINVAL; |
| | 18 | |
| | 19 | if (d->props.generic_bulk_ctrl_endpoint == 0) { |
| | 20 | err("endpoint for generic control not specified."); |
| | 21 | return -EINVAL; |
| | 22 | } |
| | 23 | |
| | 24 | if ((ret = mutex_lock_interruptible(&d->usb_mutex))) |
| | 25 | return ret; |
| | 26 | |
| | 27 | deb_xfer(">>> "); |
| | 28 | debug_dump(wbuf,wlen,deb_xfer); |
| | 29 | |
| | 30 | ret = usb_bulk_msg(d->udev,usb_sndbulkpipe(d->udev, |
| | 31 | d->props.generic_bulk_ctrl_endpoint), wbuf,wlen,&actlen, |
| | 32 | 2000); |
| | 33 | |
| | 34 | if (ret) |
| | 35 | err("bulk message failed: %d (%d/%d)",ret,wlen,actlen); |
| | 36 | else |
| | 37 | ret = actlen != wlen ? -1 : 0; |
| | 38 | |
| | 39 | /* an answer is expected, and no error before */ |
| | 40 | if (!ret && rbuf && rlen) { |
| | 41 | if (delay_ms) |
| | 42 | msleep(delay_ms); |
| | 43 | |
| | 44 | ret = usb_bulk_msg(d->udev,usb_rcvbulkpipe(d->udev, |
| | 45 | d->props.generic_bulk_ctrl_endpoint_response ? |
| | 46 | d->props.generic_bulk_ctrl_endpoint_response : |
| | 47 | d->props.generic_bulk_ctrl_endpoint),rbuf,rlen,&actlen, |
| | 48 | 2000); |
| | 49 | |
| | 50 | if (ret) |
| | 51 | err("recv bulk message failed: %d",ret); |
| | 52 | else { |
| | 53 | deb_xfer("<<< "); |
| | 54 | debug_dump(rbuf,actlen,deb_xfer); |
| | 55 | } |
| | 56 | } |
| | 57 | |
| | 58 | mutex_unlock(&d->usb_mutex); |
| | 59 | return ret; |
| | 60 | } |
| | 61 | EXPORT_SYMBOL(dvb_usb_generic_rw); |
| | 62 | |
| | 63 | int dvb_usb_generic_write(struct dvb_usb_device *d, u8 *buf, u16 len) |
| | 64 | { |
| | 65 | return dvb_usb_generic_rw(d,buf,len,NULL,0,0); |
| | 66 | } |
| | 67 | EXPORT_SYMBOL(dvb_usb_generic_write); |
| | 68 | |
| | 69 | static void dvb_usb_data_complete(struct usb_data_stream *stream, u8 *buffer, size_t length) |
| | 70 | { |
| | 71 | struct dvb_usb_adapter *adap = stream->user_priv; |
| | 72 | if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB) |
| | 73 | dvb_dmx_swfilter(&adap->demux, buffer, length); |
| | 74 | } |
| | 75 | |
| | 76 | static void dvb_usb_data_complete_204(struct usb_data_stream *stream, u8 *buffer, size_t length) |
| | 77 | { |
| | 78 | struct dvb_usb_adapter *adap = stream->user_priv; |
| | 79 | if (adap->feedcount > 0 && adap->state & DVB_USB_ADAP_STATE_DVB) |
| | 80 | dvb_dmx_swfilter_204(&adap->demux, buffer, length); |
| | 81 | } |
| | 82 | |
| | 83 | int dvb_usb_adapter_stream_init(struct dvb_usb_adapter *adap) |
| | 84 | { |
| | 85 | adap->stream.udev = adap->dev->udev; |
| | 86 | if (adap->props.caps & DVB_USB_ADAP_RECEIVES_204_BYTE_TS) |
| | 87 | adap->stream.complete = dvb_usb_data_complete_204; |
| | 88 | else |
| | 89 | adap->stream.complete = dvb_usb_data_complete; |
| | 90 | adap->stream.user_priv = adap; |
| | 91 | return usb_urb_init(&adap->stream, &adap->props.stream); |
| | 92 | } |
| | 93 | |
| | 94 | int dvb_usb_adapter_stream_exit(struct dvb_usb_adapter *adap) |
| | 95 | { |
| | 96 | return usb_urb_exit(&adap->stream); |
| | 97 | } |
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame_incremental