diff options
Diffstat (limited to 'drivers/media/dvb/dvb-usb/dvb-usb-init.c')
-rw-r--r-- | drivers/media/dvb/dvb-usb/dvb-usb-init.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-init.c b/drivers/media/dvb/dvb-usb/dvb-usb-init.c new file mode 100644 index 00000000000..2e3ea0fa28e --- /dev/null +++ b/drivers/media/dvb/dvb-usb/dvb-usb-init.c | |||
@@ -0,0 +1,289 @@ | |||
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; | ||
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 | /* 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)"); | ||
44 | return -ENODEV; | ||
45 | } | ||
46 | |||
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; | ||
52 | } else { | ||
53 | info("will pass the complete MPEG2 transport stream to the software demuxer."); | ||
54 | adap->pid_filtering = 0; | ||
55 | adap->max_feed_count = 255; | ||
56 | } | ||
57 | |||
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; | ||
64 | } | ||
65 | |||
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); | ||
70 | return -ENOMEM; | ||
71 | } | ||
72 | } | ||
73 | |||
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))) { | ||
77 | return ret; | ||
78 | } | ||
79 | |||
80 | d->num_adapters_initialized++; | ||
81 | d->state |= DVB_USB_STATE_DVB; | ||
82 | } | ||
83 | |||
84 | /* | ||
85 | * when reloading the driver w/o replugging the device | ||
86 | * sometimes a timeout occures, this helps | ||
87 | */ | ||
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)); | ||
91 | } | ||
92 | |||
93 | return 0; | ||
94 | } | ||
95 | |||
96 | static int dvb_usb_adapter_exit(struct dvb_usb_device *d) | ||
97 | { | ||
98 | int n; | ||
99 | |||
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); | ||
105 | } | ||
106 | d->num_adapters_initialized = 0; | ||
107 | d->state &= ~DVB_USB_STATE_DVB; | ||
108 | return 0; | ||
109 | } | ||
110 | |||
111 | |||
112 | /* general initialization functions */ | ||
113 | static int dvb_usb_exit(struct dvb_usb_device *d) | ||
114 | { | ||
115 | deb_info("state before exiting everything: %x\n", d->state); | ||
116 | dvb_usb_remote_exit(d); | ||
117 | dvb_usb_adapter_exit(d); | ||
118 | dvb_usb_i2c_exit(d); | ||
119 | deb_info("state should be zero now: %x\n", d->state); | ||
120 | d->state = DVB_USB_STATE_INIT; | ||
121 | kfree(d->priv); | ||
122 | kfree(d); | ||
123 | return 0; | ||
124 | } | ||
125 | |||
126 | static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums) | ||
127 | { | ||
128 | int ret = 0; | ||
129 | |||
130 | mutex_init(&d->usb_mutex); | ||
131 | mutex_init(&d->i2c_mutex); | ||
132 | |||
133 | d->state = DVB_USB_STATE_INIT; | ||
134 | |||
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'"); | ||
139 | return -ENOMEM; | ||
140 | } | ||
141 | } | ||
142 | |||
143 | /* check the capabilities and set appropriate variables */ | ||
144 | dvb_usb_device_power_ctrl(d, 1); | ||
145 | |||
146 | if ((ret = dvb_usb_i2c_init(d)) || | ||
147 | (ret = dvb_usb_adapter_init(d, adapter_nums))) { | ||
148 | dvb_usb_exit(d); | ||
149 | return ret; | ||
150 | } | ||
151 | |||
152 | if ((ret = dvb_usb_remote_init(d))) | ||
153 | err("could not initialize remote control."); | ||
154 | |||
155 | dvb_usb_device_power_ctrl(d, 0); | ||
156 | |||
157 | return 0; | ||
158 | } | ||
159 | |||
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) | ||
162 | { | ||
163 | int i, j; | ||
164 | struct dvb_usb_device_description *desc = NULL; | ||
165 | |||
166 | *cold = -1; | ||
167 | |||
168 | for (i = 0; i < props->num_device_descs; i++) { | ||
169 | |||
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)) { | ||
174 | *cold = 1; | ||
175 | desc = &props->devices[i]; | ||
176 | break; | ||
177 | } | ||
178 | } | ||
179 | |||
180 | if (desc != NULL) | ||
181 | break; | ||
182 | |||
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)) { | ||
187 | *cold = 0; | ||
188 | desc = &props->devices[i]; | ||
189 | break; | ||
190 | } | ||
191 | } | ||
192 | } | ||
193 | |||
194 | if (desc != NULL && props->identify_state != NULL) | ||
195 | props->identify_state(udev, props, &desc, cold); | ||
196 | |||
197 | return desc; | ||
198 | } | ||
199 | |||
200 | int dvb_usb_device_power_ctrl(struct dvb_usb_device *d, int onoff) | ||
201 | { | ||
202 | if (onoff) | ||
203 | d->powered++; | ||
204 | else | ||
205 | d->powered--; | ||
206 | |||
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); | ||
211 | } | ||
212 | return 0; | ||
213 | } | ||
214 | |||
215 | /* | ||
216 | * USB | ||
217 | */ | ||
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, | ||
221 | short *adapter_nums) | ||
222 | { | ||
223 | struct usb_device *udev = interface_to_usbdev(intf); | ||
224 | struct dvb_usb_device *d = NULL; | ||
225 | struct dvb_usb_device_description *desc = NULL; | ||
226 | |||
227 | int ret = -ENOMEM, cold = 0; | ||
228 | |||
229 | if (du != NULL) | ||
230 | *du = NULL; | ||
231 | |||
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"); | ||
234 | return -ENODEV; | ||
235 | } | ||
236 | |||
237 | if (cold) { | ||
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) | ||
241 | return ret; | ||
242 | } | ||
243 | |||
244 | info("found a '%s' in warm state.", desc->name); | ||
245 | d = kzalloc(sizeof(struct dvb_usb_device), GFP_KERNEL); | ||
246 | if (d == NULL) { | ||
247 | err("no memory for 'struct dvb_usb_device'"); | ||
248 | return -ENOMEM; | ||
249 | } | ||
250 | |||
251 | d->udev = udev; | ||
252 | memcpy(&d->props, props, sizeof(struct dvb_usb_device_properties)); | ||
253 | d->desc = desc; | ||
254 | d->owner = owner; | ||
255 | |||
256 | usb_set_intfdata(intf, d); | ||
257 | |||
258 | if (du != NULL) | ||
259 | *du = d; | ||
260 | |||
261 | ret = dvb_usb_init(d, adapter_nums); | ||
262 | |||
263 | if (ret == 0) | ||
264 | info("%s successfully initialized and connected.", desc->name); | ||
265 | else | ||
266 | info("%s error while loading driver (%d)", desc->name, ret); | ||
267 | return ret; | ||
268 | } | ||
269 | EXPORT_SYMBOL(dvb_usb_device_init); | ||
270 | |||
271 | void dvb_usb_device_exit(struct usb_interface *intf) | ||
272 | { | ||
273 | struct dvb_usb_device *d = usb_get_intfdata(intf); | ||
274 | const char *name = "generic DVB-USB module"; | ||
275 | |||
276 | usb_set_intfdata(intf, NULL); | ||
277 | if (d != NULL && d->desc != NULL) { | ||
278 | name = d->desc->name; | ||
279 | dvb_usb_exit(d); | ||
280 | } | ||
281 | info("%s successfully deinitialized and disconnected.", name); | ||
282 | |||
283 | } | ||
284 | EXPORT_SYMBOL(dvb_usb_device_exit); | ||
285 | |||
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"); | ||