2 * DVB USB library - provides a generic interface for a DVB USB device driver.
6 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation, version 2.
12 * see Documentation/dvb/README.dvb-usb for more information
14 #include "dvb-usb-common.h"
18 module_param_named(debug, dvb_usb_debug, int, 0644);
19 MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,pll=4,ts=8,err=16,rc=32,fw=64,mem=128,uxfer=256 (or-able))." DVB_USB_DEBUG_STATUS);
21 int dvb_usb_disable_rc_polling;
22 module_param_named(disable_rc_polling, dvb_usb_disable_rc_polling, int, 0644);
23 MODULE_PARM_DESC(disable_rc_polling, "disable remote control polling (default: 0).");
25 static int dvb_usb_force_pid_filter_usage;
26 module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage, int, 0444);
27 MODULE_PARM_DESC(force_pid_filter_usage, "force all dvb-usb-devices to use a PID filter, if any (default: 0).");
29 static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs)
31 struct dvb_usb_adapter *adap;
34 for (n = 0; n < d->props.num_adapters; n++) {
35 adap = &d->adapter[n];
39 memcpy(&adap->props, &d->props.adapter[n], sizeof(struct dvb_usb_adapter_properties));
41 /* speed - when running at FULL speed we need a HW PID filter */
42 if (d->udev->speed == USB_SPEED_FULL && !(adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER)) {
43 err("This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)");
47 if ((d->udev->speed == USB_SPEED_FULL && adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER) ||
48 (adap->props.caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {
49 info("will use the device's hardware PID filter (table count: %d).", adap->props.pid_filter_count);
50 adap->pid_filtering = 1;
51 adap->max_feed_count = adap->props.pid_filter_count;
53 info("will pass the complete MPEG2 transport stream to the software demuxer.");
54 adap->pid_filtering = 0;
55 adap->max_feed_count = 255;
58 if (!adap->pid_filtering &&
59 dvb_usb_force_pid_filter_usage &&
60 adap->props.caps & DVB_USB_ADAP_HAS_PID_FILTER) {
61 info("pid filter enabled by module option.");
62 adap->pid_filtering = 1;
63 adap->max_feed_count = adap->props.pid_filter_count;
66 if (adap->props.size_of_priv > 0) {
67 adap->priv = kzalloc(adap->props.size_of_priv, GFP_KERNEL);
68 if (adap->priv == NULL) {
69 err("no memory for priv for adapter %d.", n);
74 if ((ret = dvb_usb_adapter_stream_init(adap)) ||
75 (ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs)) ||
76 (ret = dvb_usb_adapter_frontend_init(adap))) {
80 d->num_adapters_initialized++;
81 d->state |= DVB_USB_STATE_DVB;
85 * when reloading the driver w/o replugging the device
86 * sometimes a timeout occures, this helps
88 if (d->props.generic_bulk_ctrl_endpoint != 0) {
89 usb_clear_halt(d->udev, usb_sndbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint));
90 usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint));
96 static int dvb_usb_adapter_exit(struct dvb_usb_device *d)
100 for (n = 0; n < d->num_adapters_initialized; n++) {
101 dvb_usb_adapter_frontend_exit(&d->adapter[n]);
102 dvb_usb_adapter_dvb_exit(&d->adapter[n]);
103 dvb_usb_adapter_stream_exit(&d->adapter[n]);
104 kfree(d->adapter[n].priv);
106 d->num_adapters_initialized = 0;
107 d->state &= ~DVB_USB_STATE_DVB;
112 /* general initialization functions */
113 static int dvb_usb_exit(struct dvb_usb_device *d)
115 deb_info("state before exiting everything: %x\n", d->state);
116 dvb_usb_remote_exit(d);
117 dvb_usb_adapter_exit(d);
119 deb_info("state should be zero now: %x\n", d->state);
120 d->state = DVB_USB_STATE_INIT;
126 static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums)
130 mutex_init(&d->usb_mutex);
131 mutex_init(&d->i2c_mutex);
133 d->state = DVB_USB_STATE_INIT;
135 if (d->props.size_of_priv > 0) {
136 d->priv = kzalloc(d->props.size_of_priv, GFP_KERNEL);
137 if (d->priv == NULL) {
138 err("no memory for priv in 'struct dvb_usb_device'");
143 /* check the capabilities and set appropriate variables */
144 dvb_usb_device_power_ctrl(d, 1);
146 if ((ret = dvb_usb_i2c_init(d)) ||
147 (ret = dvb_usb_adapter_init(d, adapter_nums))) {
152 if ((ret = dvb_usb_remote_init(d)))
153 err("could not initialize remote control.");
155 dvb_usb_device_power_ctrl(d, 0);
160 /* determine the name and the state of the just found USB device */
161 static struct dvb_usb_device_description *dvb_usb_find_device(struct usb_device *udev, struct dvb_usb_device_properties *props, int *cold)
164 struct dvb_usb_device_description *desc = NULL;
168 for (i = 0; i < props->num_device_descs; i++) {
170 for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) {
171 deb_info("check for cold %x %x\n", props->devices[i].cold_ids[j]->idVendor, props->devices[i].cold_ids[j]->idProduct);
172 if (props->devices[i].cold_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
173 props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
175 desc = &props->devices[i];
183 for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) {
184 deb_info("check for warm %x %x\n", props->devices[i].warm_ids[j]->idVendor, props->devices[i].warm_ids[j]->idProduct);
185 if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
186 props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
188 desc = &props->devices[i];
194 if (desc != NULL && props->identify_state != NULL)
195 props->identify_state(udev, props, &desc, cold);
200 int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff)
207 if (d->powered == 0 || (onoff && d->powered == 1)) { /* when switching from 1 to 0 or from 0 to 1 */
208 deb_info("power control: %d\n", onoff);
209 if (d->props.power_ctrl)
210 return d->props.power_ctrl(d, onoff);
218 int dvb_usb_device_init(struct usb_interface *intf,
219 struct dvb_usb_device_properties *props,
220 struct module *owner, struct dvb_usb_device **du,
223 struct usb_device *udev = interface_to_usbdev(intf);
224 struct dvb_usb_device *d = NULL;
225 struct dvb_usb_device_description *desc = NULL;
227 int ret = -ENOMEM, cold = 0;
232 if ((desc = dvb_usb_find_device(udev, props, &cold)) == NULL) {
233 deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");
238 info("found a '%s' in cold state, will try to load a firmware", desc->name);
239 ret = dvb_usb_download_firmware(udev, props);
240 if (!props->no_reconnect || ret != 0)
244 info("found a '%s' in warm state.", desc->name);
245 d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
247 err("no memory for 'struct dvb_usb_device'");
252 memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties));
256 usb_set_intfdata(intf, d);
261 ret = dvb_usb_init(d, adapter_nums);
264 info("%s successfully initialized and connected.", desc->name);
266 info("%s error while loading driver (%d)", desc->name, ret);
269 EXPORT_SYMBOL(dvb_usb_device_init);
271 void dvb_usb_device_exit(struct usb_interface *intf)
273 struct dvb_usb_device *d = usb_get_intfdata(intf);
274 const char *name = "generic DVB-USB module";
276 usb_set_intfdata(intf, NULL);
277 if (d != NULL && d->desc != NULL) {
278 name = d->desc->name;
281 info("%s successfully deinitialized and disconnected.", name);
284 EXPORT_SYMBOL(dvb_usb_device_exit);
286 MODULE_VERSION("1.0");
287 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
288 MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");
289 MODULE_LICENSE("GPL");