2 * dvb-dibusb-dvb.c is part of the driver for mobile USB Budget DVB-T devices
3 * based on reference design made by DiBcom (http://www.dibcom.fr/)
5 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
7 * see dvb-dibusb-core.c for more copyright details.
9 * This file contains functions for initializing and handling the
12 #include "dvb-dibusb.h"
14 #include <linux/usb.h>
15 #include <linux/version.h>
17 static u32 urb_compl_count;
22 void dibusb_urb_complete(struct urb *urb, struct pt_regs *ptregs)
24 struct usb_dibusb *dib = urb->context;
27 deb_ts("urb complete feedcount: %d, status: %d, length: %d\n",dib->feedcount,urb->status,
31 if (urb_compl_count % 500 == 0)
32 deb_info("%d urbs completed so far.\n",urb_compl_count);
34 switch (urb->status) {
36 case -ETIMEDOUT: /* NAK */
38 case -ECONNRESET: /* unlink */
43 warn("urb completition error %d.", urb->status);
46 if (dib->feedcount > 0) {
47 deb_ts("URB return len: %d\n",urb->actual_length);
48 if (urb->actual_length % 188)
49 deb_ts("TS Packets: %d, %d\n", urb->actual_length/188,urb->actual_length % 188);
51 /* Francois recommends to drop not full-filled packets, even if they may
52 * contain valid TS packets, at least for USB1.1
54 * if (urb->actual_length == dib->dibdev->parm->default_size && dib->dvb_is_ready) */
55 if (dib->init_state & DIBUSB_STATE_DVB)
56 dvb_dmx_swfilter(&dib->demux, (u8*) urb->transfer_buffer,urb->actual_length);
58 deb_ts("URB dropped because of the "
59 "actual_length or !dvb_is_ready (%d).\n",dib->init_state & DIBUSB_STATE_DVB);
61 deb_ts("URB dropped because of feedcount.\n");
63 ret = usb_submit_urb(urb,GFP_ATOMIC);
64 deb_ts("urb resubmitted, (%d)\n",ret);
67 static int dibusb_ctrl_feed(struct dvb_demux_feed *dvbdmxfeed, int onoff)
69 struct usb_dibusb *dib = dvbdmxfeed->demux->priv;
75 newfeedcount = dib->feedcount + (onoff ? 1 : -1);
78 * stop feed before setting a new pid if there will be no pid anymore
80 // if ((dib->dibdev->parm->firmware_bug && dib->feedcount) ||
81 if (newfeedcount == 0) {
82 deb_ts("stop feeding\n");
83 if (dib->xfer_ops.fifo_ctrl != NULL) {
84 if (dib->xfer_ops.fifo_ctrl(dib->fe,0)) {
85 err("error while inhibiting fifo.");
91 dib->feedcount = newfeedcount;
93 /* get a free pid from the list and activate it on the device
97 dibusb_ctrl_pid(dib,dvbdmxfeed,onoff);
100 * start the feed, either if there is the firmware bug or
101 * if this was the first pid to set and there is still a pid for
105 // if ((dib->dibdev->parm->firmware_bug)
106 if (dib->feedcount == onoff && dib->feedcount > 0) {
108 deb_ts("controlling pid parser\n");
109 if (dib->xfer_ops.pid_parse != NULL) {
110 if (dib->xfer_ops.pid_parse(dib->fe,dib->pid_parse) < 0) {
111 err("could not handle pid_parser");
115 deb_ts("start feeding\n");
116 if (dib->xfer_ops.fifo_ctrl != NULL) {
117 if (dib->xfer_ops.fifo_ctrl(dib->fe,1)) {
118 err("error while enabling fifo.");
122 dibusb_streaming(dib,1);
127 static int dibusb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
129 deb_ts("start pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid,dvbdmxfeed->type);
130 return dibusb_ctrl_feed(dvbdmxfeed,1);
133 static int dibusb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
135 deb_ts("stop pid: 0x%04x, feedtype: %d\n", dvbdmxfeed->pid, dvbdmxfeed->type);
136 return dibusb_ctrl_feed(dvbdmxfeed,0);
139 int dibusb_dvb_init(struct usb_dibusb *dib)
145 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,4)
146 if ((ret = dvb_register_adapter(&dib->adapter, DRIVER_DESC)) < 0) {
148 if ((ret = dvb_register_adapter(&dib->adapter, DRIVER_DESC ,
151 deb_info("dvb_register_adapter failed: error %d", ret);
154 dib->adapter->priv = dib;
156 /* i2c is done in dibusb_i2c_init */
158 dib->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
160 dib->demux.priv = (void *)dib;
161 /* get pidcount from demod */
162 dib->demux.feednum = dib->demux.filternum = 255;
163 dib->demux.start_feed = dibusb_start_feed;
164 dib->demux.stop_feed = dibusb_stop_feed;
165 dib->demux.write_to_decoder = NULL;
166 if ((ret = dvb_dmx_init(&dib->demux)) < 0) {
167 err("dvb_dmx_init failed: error %d",ret);
171 dib->dmxdev.filternum = dib->demux.filternum;
172 dib->dmxdev.demux = &dib->demux.dmx;
173 dib->dmxdev.capabilities = 0;
174 if ((ret = dvb_dmxdev_init(&dib->dmxdev, dib->adapter)) < 0) {
175 err("dvb_dmxdev_init failed: error %d",ret);
179 dvb_net_init(dib->adapter, &dib->dvb_net, &dib->demux.dmx);
183 dvb_dmx_release(&dib->demux);
185 dvb_unregister_adapter(dib->adapter);
189 dib->init_state |= DIBUSB_STATE_DVB;
193 int dibusb_dvb_exit(struct usb_dibusb *dib)
195 if (dib->init_state & DIBUSB_STATE_DVB) {
196 dib->init_state &= ~DIBUSB_STATE_DVB;
197 deb_info("unregistering DVB part\n");
198 dvb_net_release(&dib->dvb_net);
199 dib->demux.dmx.close(&dib->demux.dmx);
200 dvb_dmxdev_release(&dib->dmxdev);
201 dvb_dmx_release(&dib->demux);
202 dvb_unregister_adapter(dib->adapter);