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c79b339f AP |
1 | /* |
2 | * DVB USB library - provides a generic interface for a DVB USB device driver. | |
3 | * | |
4 | * dvb-usb-init.c | |
5 | * | |
6 | * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) | |
7 | * | |
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. | |
11 | * | |
12 | * see Documentation/dvb/README.dvb-usb for more information | |
13 | */ | |
14 | #include "dvb_usb_common.h" | |
15 | ||
16 | /* debug */ | |
17 | int dvb_usb_debug; | |
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); | |
20 | ||
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)."); | |
24 | ||
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)."); | |
28 | ||
29 | static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs) | |
30 | { | |
31 | struct dvb_usb_adapter *adap; | |
32 | int ret, n, o; | |
33 | ||
34 | for (n = 0; n < d->props.num_adapters; n++) { | |
35 | adap = &d->adapter[n]; | |
36 | adap->dev = d; | |
37 | adap->id = n; | |
38 | ||
39 | memcpy(&adap->props, &d->props.adapter[n], sizeof(struct dvb_usb_adapter_properties)); | |
40 | ||
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)"); | |
46 | return -ENODEV; | |
47 | } | |
48 | ||
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; | |
54 | } else { | |
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; | |
58 | } | |
59 | ||
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; | |
66 | } | |
67 | ||
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); | |
72 | return -ENOMEM; | |
73 | } | |
74 | } | |
75 | } | |
76 | ||
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); | |
81 | return -ENOMEM; | |
82 | } | |
83 | } | |
84 | ||
85 | if ((ret = dvb_usb_adapter_stream_init(adap)) || | |
86 | (ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs)) || | |
87 | (ret = dvb_usb_adapter_frontend_init(adap))) { | |
88 | return ret; | |
89 | } | |
90 | ||
91 | /* use exclusive FE lock if there is multiple shared FEs */ | |
92 | if (adap->fe_adap[1].fe) | |
93 | adap->dvb_adap.mfe_shared = 1; | |
94 | ||
95 | d->num_adapters_initialized++; | |
96 | d->state |= DVB_USB_STATE_DVB; | |
97 | } | |
98 | ||
99 | /* | |
100 | * when reloading the driver w/o replugging the device | |
101 | * sometimes a timeout occures, this helps | |
102 | */ | |
103 | if (d->props.generic_bulk_ctrl_endpoint != 0) { | |
104 | usb_clear_halt(d->udev, usb_sndbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint)); | |
105 | usb_clear_halt(d->udev, usb_rcvbulkpipe(d->udev, d->props.generic_bulk_ctrl_endpoint)); | |
106 | } | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | static int dvb_usb_adapter_exit(struct dvb_usb_device *d) | |
112 | { | |
113 | int n; | |
114 | ||
115 | for (n = 0; n < d->num_adapters_initialized; n++) { | |
116 | dvb_usb_adapter_frontend_exit(&d->adapter[n]); | |
117 | dvb_usb_adapter_dvb_exit(&d->adapter[n]); | |
118 | dvb_usb_adapter_stream_exit(&d->adapter[n]); | |
119 | kfree(d->adapter[n].priv); | |
120 | } | |
121 | d->num_adapters_initialized = 0; | |
122 | d->state &= ~DVB_USB_STATE_DVB; | |
123 | return 0; | |
124 | } | |
125 | ||
126 | ||
127 | /* general initialization functions */ | |
128 | static int dvb_usb_exit(struct dvb_usb_device *d) | |
129 | { | |
130 | deb_info("state before exiting everything: %x\n", d->state); | |
131 | dvb_usb_remote_exit(d); | |
132 | dvb_usb_adapter_exit(d); | |
133 | dvb_usb_i2c_exit(d); | |
134 | deb_info("state should be zero now: %x\n", d->state); | |
135 | d->state = DVB_USB_STATE_INIT; | |
136 | kfree(d->priv); | |
137 | kfree(d); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums) | |
142 | { | |
143 | int ret = 0; | |
144 | ||
145 | mutex_init(&d->usb_mutex); | |
146 | mutex_init(&d->i2c_mutex); | |
147 | ||
148 | d->state = DVB_USB_STATE_INIT; | |
149 | ||
150 | if (d->props.size_of_priv > 0) { | |
151 | d->priv = kzalloc(d->props.size_of_priv, GFP_KERNEL); | |
152 | if (d->priv == NULL) { | |
153 | err("no memory for priv in 'struct dvb_usb_device'"); | |
154 | return -ENOMEM; | |
155 | } | |
156 | } | |
157 | ||
158 | /* check the capabilities and set appropriate variables */ | |
159 | dvb_usb_device_power_ctrl(d, 1); | |
160 | ||
161 | if ((ret = dvb_usb_i2c_init(d)) || | |
162 | (ret = dvb_usb_adapter_init(d, adapter_nums))) { | |
163 | dvb_usb_exit(d); | |
164 | return ret; | |
165 | } | |
166 | ||
dc786937 AP |
167 | if (d->props.init) |
168 | d->props.init(d); | |
169 | ||
c79b339f AP |
170 | if ((ret = dvb_usb_remote_init(d))) |
171 | err("could not initialize remote control."); | |
172 | ||
173 | dvb_usb_device_power_ctrl(d, 0); | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | /* determine the name and the state of the just found USB device */ | |
179 | static struct dvb_usb_device_description *dvb_usb_find_device(struct usb_device *udev, struct dvb_usb_device_properties *props, int *cold) | |
180 | { | |
181 | int i, j; | |
182 | struct dvb_usb_device_description *desc = NULL; | |
183 | ||
184 | *cold = -1; | |
185 | ||
186 | for (i = 0; i < props->num_device_descs; i++) { | |
187 | ||
188 | for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) { | |
189 | deb_info("check for cold %x %x\n", props->devices[i].cold_ids[j]->idVendor, props->devices[i].cold_ids[j]->idProduct); | |
190 | if (props->devices[i].cold_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) && | |
191 | props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) { | |
192 | *cold = 1; | |
193 | desc = &props->devices[i]; | |
194 | break; | |
195 | } | |
196 | } | |
197 | ||
198 | if (desc != NULL) | |
199 | break; | |
200 | ||
201 | for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) { | |
202 | deb_info("check for warm %x %x\n", props->devices[i].warm_ids[j]->idVendor, props->devices[i].warm_ids[j]->idProduct); | |
203 | if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) && | |
204 | props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) { | |
205 | *cold = 0; | |
206 | desc = &props->devices[i]; | |
207 | break; | |
208 | } | |
209 | } | |
210 | } | |
211 | ||
212 | if (desc != NULL && props->identify_state != NULL) | |
213 | props->identify_state(udev, props, &desc, cold); | |
214 | ||
215 | return desc; | |
216 | } | |
217 | ||
218 | int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff) | |
219 | { | |
220 | if (onoff) | |
221 | d->powered++; | |
222 | else | |
223 | d->powered--; | |
224 | ||
225 | if (d->powered == 0 || (onoff && d->powered == 1)) { /* when switching from 1 to 0 or from 0 to 1 */ | |
226 | deb_info("power control: %d\n", onoff); | |
227 | if (d->props.power_ctrl) | |
228 | return d->props.power_ctrl(d, onoff); | |
229 | } | |
230 | return 0; | |
231 | } | |
232 | ||
233 | /* | |
234 | * USB | |
235 | */ | |
236 | int dvb_usbv2_device_init(struct usb_interface *intf, | |
65871deb | 237 | const struct usb_device_id *id, |
c79b339f AP |
238 | short *adapter_nums) |
239 | { | |
240 | struct usb_device *udev = interface_to_usbdev(intf); | |
241 | struct dvb_usb_device *d = NULL; | |
242 | struct dvb_usb_device_description *desc = NULL; | |
65871deb AP |
243 | struct dvb_usb_device_properties *props = |
244 | (struct dvb_usb_device_properties *) id->driver_info; | |
c79b339f AP |
245 | |
246 | int ret = -ENOMEM, cold = 0; | |
247 | ||
c79b339f AP |
248 | if ((desc = dvb_usb_find_device(udev, props, &cold)) == NULL) { |
249 | deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n"); | |
250 | return -ENODEV; | |
251 | } | |
252 | ||
253 | if (cold) { | |
254 | info("found a '%s' in cold state, will try to load a firmware", desc->name); | |
255 | ret = dvb_usb_download_firmware(udev, props); | |
256 | if (!props->no_reconnect || ret != 0) | |
257 | return ret; | |
258 | } | |
259 | ||
260 | info("found a '%s' in warm state.", desc->name); | |
261 | d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL); | |
262 | if (d == NULL) { | |
263 | err("no memory for 'struct dvb_usb_device'"); | |
264 | return -ENOMEM; | |
265 | } | |
266 | ||
267 | d->udev = udev; | |
268 | memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties)); | |
269 | d->desc = desc; | |
c79b339f AP |
270 | |
271 | usb_set_intfdata(intf, d); | |
272 | ||
c79b339f AP |
273 | ret = dvb_usb_init(d, adapter_nums); |
274 | ||
275 | if (ret == 0) | |
276 | info("%s successfully initialized and connected.", desc->name); | |
277 | else | |
278 | info("%s error while loading driver (%d)", desc->name, ret); | |
279 | return ret; | |
280 | } | |
281 | EXPORT_SYMBOL(dvb_usbv2_device_init); | |
282 | ||
283 | void dvb_usbv2_device_exit(struct usb_interface *intf) | |
284 | { | |
285 | struct dvb_usb_device *d = usb_get_intfdata(intf); | |
286 | const char *name = "generic DVB-USB module"; | |
287 | ||
288 | usb_set_intfdata(intf, NULL); | |
289 | if (d != NULL && d->desc != NULL) { | |
290 | name = d->desc->name; | |
291 | dvb_usb_exit(d); | |
292 | } | |
293 | info("%s successfully deinitialized and disconnected.", name); | |
294 | ||
295 | } | |
296 | EXPORT_SYMBOL(dvb_usbv2_device_exit); | |
297 | ||
298 | MODULE_VERSION("1.0"); | |
299 | MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>"); | |
300 | MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices"); | |
301 | MODULE_LICENSE("GPL"); |