2 * DVB USB library - provides a generic interface for a DVB USB device driver.
6 * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.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 for (o = 0; o < adap->props.num_frontends; o++) {
42 struct dvb_usb_adapter_fe_properties *props = &adap->props.fe[o];
43 /* speed - when running at FULL speed we need a HW PID filter */
44 if (d->udev->speed == USB_SPEED_FULL && !(props->caps & DVB_USB_ADAP_HAS_PID_FILTER)) {
45 err("This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)");
49 if ((d->udev->speed == USB_SPEED_FULL && props->caps & DVB_USB_ADAP_HAS_PID_FILTER) ||
50 (props->caps & DVB_USB_ADAP_NEED_PID_FILTERING)) {
51 info("will use the device's hardware PID filter (table count: %d).", props->pid_filter_count);
52 adap->fe_adap[o].pid_filtering = 1;
53 adap->fe_adap[o].max_feed_count = props->pid_filter_count;
55 info("will pass the complete MPEG2 transport stream to the software demuxer.");
56 adap->fe_adap[o].pid_filtering = 0;
57 adap->fe_adap[o].max_feed_count = 255;
60 if (!adap->fe_adap[o].pid_filtering &&
61 dvb_usb_force_pid_filter_usage &&
62 props->caps & DVB_USB_ADAP_HAS_PID_FILTER) {
63 info("pid filter enabled by module option.");
64 adap->fe_adap[o].pid_filtering = 1;
65 adap->fe_adap[o].max_feed_count = props->pid_filter_count;
68 if (props->size_of_priv > 0) {
69 adap->fe_adap[o].priv = kzalloc(props->size_of_priv, GFP_KERNEL);
70 if (adap->fe_adap[o].priv == NULL) {
71 err("no memory for priv for adapter %d fe %d.", n, o);
77 if (adap->props.size_of_priv > 0) {
78 adap->priv = kzalloc(adap->props.size_of_priv, GFP_KERNEL);
79 if (adap->priv == NULL) {
80 err("no memory for priv for adapter %d.", n);
85 ret = dvb_usb_adapter_stream_init(adap);
89 ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs);
93 ret = dvb_usb_adapter_frontend_init(adap);
95 goto frontend_init_err;
97 /* use exclusive FE lock if there is multiple shared FEs */
98 if (adap->fe_adap[1].fe)
99 adap->dvb_adap.mfe_shared = 1;
101 d->num_adapters_initialized++;
102 d->state |= DVB_USB_STATE_DVB;
106 * when reloading the driver w/o replugging the device
107 * sometimes a timeout occures, this helps
109 if (d->props.generic_bulk_ctrl_endpoint != 0) {
110 usb_clear_halt(d->udev, usb_sndbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint));
111 usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint));
117 dvb_usb_adapter_dvb_exit(adap);
119 dvb_usb_adapter_stream_exit(adap);
123 static int dvb_usb_adapter_exit(struct dvb_usb_device *d)
127 for (n = 0; n < d->num_adapters_initialized; n++) {
128 dvb_usb_adapter_frontend_exit(&d->adapter[n]);
129 dvb_usb_adapter_dvb_exit(&d->adapter[n]);
130 dvb_usb_adapter_stream_exit(&d->adapter[n]);
131 kfree(d->adapter[n].priv);
133 d->num_adapters_initialized = 0;
134 d->state &= ~DVB_USB_STATE_DVB;
139 /* general initialization functions */
140 static int dvb_usb_exit(struct dvb_usb_device *d)
142 deb_info("state before exiting everything: %x\n", d->state);
143 dvb_usb_remote_exit(d);
144 dvb_usb_adapter_exit(d);
146 deb_info("state should be zero now: %x\n", d->state);
147 d->state = DVB_USB_STATE_INIT;
153 static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums)
157 mutex_init(&d->data_mutex);
158 mutex_init(&d->usb_mutex);
159 mutex_init(&d->i2c_mutex);
161 d->state = DVB_USB_STATE_INIT;
163 if (d->props.size_of_priv > 0) {
164 d->priv = kzalloc(d->props.size_of_priv, GFP_KERNEL);
165 if (d->priv == NULL) {
166 err("no memory for priv in 'struct dvb_usb_device'");
171 /* check the capabilities and set appropriate variables */
172 dvb_usb_device_power_ctrl(d, 1);
174 if ((ret = dvb_usb_i2c_init(d)) ||
175 (ret = dvb_usb_adapter_init(d, adapter_nums))) {
180 if ((ret = dvb_usb_remote_init(d)))
181 err("could not initialize remote control.");
183 dvb_usb_device_power_ctrl(d, 0);
188 /* determine the name and the state of the just found USB device */
189 static struct dvb_usb_device_description *dvb_usb_find_device(struct usb_device *udev, struct dvb_usb_device_properties *props, int *cold)
192 struct dvb_usb_device_description *desc = NULL;
196 for (i = 0; i < props->num_device_descs; i++) {
198 for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) {
199 deb_info("check for cold %x %x\n", props->devices[i].cold_ids[j]->idVendor, props->devices[i].cold_ids[j]->idProduct);
200 if (props->devices[i].cold_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
201 props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
203 desc = &props->devices[i];
211 for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) {
212 deb_info("check for warm %x %x\n", props->devices[i].warm_ids[j]->idVendor, props->devices[i].warm_ids[j]->idProduct);
213 if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
214 props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
216 desc = &props->devices[i];
222 if (desc != NULL && props->identify_state != NULL)
223 props->identify_state(udev, props, &desc, cold);
228 int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff)
235 if (d->powered == 0 || (onoff && d->powered == 1)) { /* when switching from 1 to 0 or from 0 to 1 */
236 deb_info("power control: %d\n", onoff);
237 if (d->props.power_ctrl)
238 return d->props.power_ctrl(d, onoff);
246 int dvb_usb_device_init(struct usb_interface *intf,
247 struct dvb_usb_device_properties *props,
248 struct module *owner, struct dvb_usb_device **du,
251 struct usb_device *udev = interface_to_usbdev(intf);
252 struct dvb_usb_device *d = NULL;
253 struct dvb_usb_device_description *desc = NULL;
255 int ret = -ENOMEM, cold = 0;
260 if ((desc = dvb_usb_find_device(udev, props, &cold)) == NULL) {
261 deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");
266 info("found a '%s' in cold state, will try to load a firmware", desc->name);
267 ret = dvb_usb_download_firmware(udev, props);
268 if (!props->no_reconnect || ret != 0)
272 info("found a '%s' in warm state.", desc->name);
273 d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL);
275 err("no memory for 'struct dvb_usb_device'");
280 memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties));
284 usb_set_intfdata(intf, d);
289 ret = dvb_usb_init(d, adapter_nums);
292 info("%s successfully initialized and connected.", desc->name);
294 info("%s error while loading driver (%d)", desc->name, ret);
297 EXPORT_SYMBOL(dvb_usb_device_init);
299 void dvb_usb_device_exit(struct usb_interface *intf)
301 struct dvb_usb_device *d = usb_get_intfdata(intf);
302 const char *default_name = "generic DVB-USB module";
305 usb_set_intfdata(intf, NULL);
306 if (d != NULL && d->desc != NULL) {
307 strscpy(name, d->desc->name, sizeof(name));
310 strscpy(name, default_name, sizeof(name));
312 info("%s successfully deinitialized and disconnected.", name);
315 EXPORT_SYMBOL(dvb_usb_device_exit);
317 MODULE_VERSION("1.0");
318 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
319 MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");
320 MODULE_LICENSE("GPL");