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authorJohannes Stezenbach <js@linuxtv.org>2005-06-24 01:02:35 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-24 03:05:30 -0400
commit776338e121b9db3156bfb4e21622a0219bbab9d4 (patch)
tree5102272b708a9e8ff81165714870d3d38363cc23 /drivers/media/dvb/dvb-usb/dvb-usb-init.c
parentb6a235b1186dda0800c8bedc2526830a4a36b44e (diff)
[PATCH] dvb: Add generalized dvb-usb driver
Add generalized dvb-usb driver which supports a wide variety of devices. Signed-off-by: Patrick Boettcher <pb@linuxtv.org> Signed-off-by: Johannes Stezenbach <js@linuxtv.org> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/media/dvb/dvb-usb/dvb-usb-init.c')
-rw-r--r--drivers/media/dvb/dvb-usb/dvb-usb-init.c211
1 files changed, 211 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..3aadec974cf
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-init.c
@@ -0,0 +1,211 @@
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) 2004-5 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 */
17int dvb_usb_debug;
18module_param_named(debug,dvb_usb_debug, int, 0644);
19MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,pll=4,ts=8,err=16,rc=32,fw=64 (or-able))." DVB_USB_DEBUG_STATUS);
20
21/* general initialization functions */
22int dvb_usb_exit(struct dvb_usb_device *d)
23{
24 deb_info("state before exiting everything: %x\n",d->state);
25 dvb_usb_remote_exit(d);
26 dvb_usb_fe_exit(d);
27 dvb_usb_i2c_exit(d);
28 dvb_usb_dvb_exit(d);
29 dvb_usb_urb_exit(d);
30 deb_info("state should be zero now: %x\n",d->state);
31 d->state = DVB_USB_STATE_INIT;
32 kfree(d->priv);
33 kfree(d);
34 return 0;
35}
36
37static int dvb_usb_init(struct dvb_usb_device *d)
38{
39 int ret = 0;
40
41 sema_init(&d->usb_sem, 1);
42 sema_init(&d->i2c_sem, 1);
43
44 d->state = DVB_USB_STATE_INIT;
45
46/* check the capabilites and set appropriate variables */
47
48/* speed - when running at FULL speed we need a HW PID filter */
49 if (d->udev->speed == USB_SPEED_FULL && !(d->props.caps & DVB_USB_HAS_PID_FILTER)) {
50 err("This USB2.0 device cannot be run on a USB1.1 port. (it lacks a HW PID filter)");
51 return -ENODEV;
52 }
53
54 if ((d->udev->speed == USB_SPEED_FULL && d->props.caps & DVB_USB_HAS_PID_FILTER) ||
55 (d->props.caps & DVB_USB_NEED_PID_FILTERING)) {
56 info("will use the device's hw PID filter.");
57 d->pid_filtering = 1;
58 d->max_feed_count = d->props.pid_filter_count;
59 } else {
60 info("will pass the complete MPEG2 transport stream to the demuxer.");
61 d->pid_filtering = 0;
62 d->max_feed_count = 255;
63 }
64
65 if (d->props.power_ctrl)
66 d->props.power_ctrl(d,1);
67
68 if ((ret = dvb_usb_urb_init(d)) ||
69 (ret = dvb_usb_dvb_init(d)) ||
70 (ret = dvb_usb_i2c_init(d)) ||
71 (ret = dvb_usb_fe_init(d))) {
72 dvb_usb_exit(d);
73 return ret;
74 }
75
76 if ((ret = dvb_usb_remote_init(d)))
77 err("could not initialize remote control.");
78
79 if (d->props.power_ctrl)
80 d->props.power_ctrl(d,0);
81
82 return 0;
83}
84
85/* determine the name and the state of the just found USB device */
86static struct dvb_usb_device_description * dvb_usb_find_device(struct usb_device *udev,struct dvb_usb_properties *props, int *cold)
87{
88 int i,j;
89 struct dvb_usb_device_description *desc = NULL;
90 *cold = -1;
91
92 for (i = 0; i < props->num_device_descs; i++) {
93
94 for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].cold_ids[j] != NULL; j++) {
95 deb_info("check for cold %x %x\n",props->devices[i].cold_ids[j]->idVendor, props->devices[i].cold_ids[j]->idProduct);
96 if (props->devices[i].cold_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
97 props->devices[i].cold_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
98 *cold = 1;
99 desc = &props->devices[i];
100 break;
101 }
102 }
103
104 if (desc != NULL)
105 break;
106
107 for (j = 0; j < DVB_USB_ID_MAX_NUM && props->devices[i].warm_ids[j] != NULL; j++) {
108 deb_info("check for warm %x %x\n",props->devices[i].warm_ids[j]->idVendor, props->devices[i].warm_ids[j]->idProduct);
109 if (props->devices[i].warm_ids[j]->idVendor == le16_to_cpu(udev->descriptor.idVendor) &&
110 props->devices[i].warm_ids[j]->idProduct == le16_to_cpu(udev->descriptor.idProduct)) {
111 *cold = 0;
112 desc = &props->devices[i];
113 break;
114 }
115 }
116 }
117
118 if (desc != NULL && props->identify_state != NULL)
119 props->identify_state(udev,props,&desc,cold);
120
121 return desc;
122}
123
124/*
125 * USB
126 */
127int dvb_usb_device_init(struct usb_interface *intf, struct dvb_usb_properties *props, struct module *owner)
128{
129 struct usb_device *udev = interface_to_usbdev(intf);
130 struct dvb_usb_device *d = NULL;
131 struct dvb_usb_device_description *desc = NULL;
132
133 int ret = -ENOMEM,cold=0;
134
135 if ((desc = dvb_usb_find_device(udev,props,&cold)) == NULL) {
136 deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");
137 return -ENODEV;
138 }
139
140 if (cold) {
141 info("found a '%s' in cold state, will try to load a firmware",desc->name);
142 ret = usb_cypress_load_firmware(udev,props->firmware,props->usb_ctrl);
143 } else {
144 info("found a '%s' in warm state.",desc->name);
145 d = kmalloc(sizeof(struct dvb_usb_device),GFP_KERNEL);
146 if (d == NULL) {
147 err("no memory for 'struct dvb_usb_device'");
148 return ret;
149 }
150 memset(d,0,sizeof(struct dvb_usb_device));
151
152 d->udev = udev;
153 memcpy(&d->props,props,sizeof(struct dvb_usb_properties));
154 d->desc = desc;
155 d->owner = owner;
156
157 if (d->props.size_of_priv > 0) {
158 d->priv = kmalloc(d->props.size_of_priv,GFP_KERNEL);
159 if (d->priv == NULL) {
160 err("no memory for priv in 'struct dvb_usb_device'");
161 kfree(d);
162 return -ENOMEM;
163 }
164 memset(d->priv,0,d->props.size_of_priv);
165 }
166
167 usb_set_intfdata(intf, d);
168
169 ret = dvb_usb_init(d);
170 }
171
172 if (ret == 0)
173 info("%s successfully initialized and connected.",desc->name);
174 else
175 info("%s error while loading driver (%d)",desc->name,ret);
176 return ret;
177}
178EXPORT_SYMBOL(dvb_usb_device_init);
179
180void dvb_usb_device_exit(struct usb_interface *intf)
181{
182 struct dvb_usb_device *d = usb_get_intfdata(intf);
183 const char *name = "generic DVB-USB module";
184
185 usb_set_intfdata(intf,NULL);
186 if (d != NULL && d->desc != NULL) {
187 name = d->desc->name;
188 dvb_usb_exit(d);
189 }
190 info("%s successfully deinitialized and disconnected.",name);
191
192}
193EXPORT_SYMBOL(dvb_usb_device_exit);
194
195/* module stuff */
196static int __init dvb_usb_module_init(void)
197{
198 return 0;
199}
200
201static void __exit dvb_usb_module_exit(void)
202{
203}
204
205module_init (dvb_usb_module_init);
206module_exit (dvb_usb_module_exit);
207
208MODULE_VERSION("0.3");
209MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
210MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");
211MODULE_LICENSE("GPL");