2 * DVB USB library - provides a generic interface for a DVB USB device driver.
6 * Copyright (C) 2004-5 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 (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 /* general initialization functions */
26 static int dvb_usb_exit(struct dvb_usb_device
*d
)
28 deb_info("state before exiting everything: %x\n",d
->state
);
29 dvb_usb_remote_exit(d
);
34 deb_info("state should be zero now: %x\n",d
->state
);
35 d
->state
= DVB_USB_STATE_INIT
;
41 static int dvb_usb_init(struct dvb_usb_device
*d
)
45 mutex_init(&d
->usb_mutex
);
46 mutex_init(&d
->i2c_mutex
);
48 d
->state
= DVB_USB_STATE_INIT
;
50 /* check the capabilities and set appropriate variables */
52 /* speed - when running at FULL speed we need a HW PID filter */
53 if (d
->udev
->speed
== USB_SPEED_FULL
&& !(d
->props
.caps
& DVB_USB_HAS_PID_FILTER
)) {
54 err("This USB2.0 device cannot be run on a USB1.1 port. (it lacks a hardware PID filter)");
58 if ((d
->udev
->speed
== USB_SPEED_FULL
&& d
->props
.caps
& DVB_USB_HAS_PID_FILTER
) ||
59 (d
->props
.caps
& DVB_USB_NEED_PID_FILTERING
)) {
60 info("will use the device's hardware PID filter (table count: %d).",d
->props
.pid_filter_count
);
62 d
->max_feed_count
= d
->props
.pid_filter_count
;
64 info("will pass the complete MPEG2 transport stream to the software demuxer.");
66 d
->max_feed_count
= 255;
69 if (d
->props
.power_ctrl
)
70 d
->props
.power_ctrl(d
,1);
72 if ((ret
= dvb_usb_urb_init(d
)) ||
73 (ret
= dvb_usb_dvb_init(d
)) ||
74 (ret
= dvb_usb_i2c_init(d
)) ||
75 (ret
= dvb_usb_fe_init(d
))) {
80 if ((ret
= dvb_usb_remote_init(d
)))
81 err("could not initialize remote control.");
83 if (d
->props
.power_ctrl
)
84 d
->props
.power_ctrl(d
,0);
89 /* determine the name and the state of the just found USB device */
90 static struct dvb_usb_device_description
* dvb_usb_find_device(struct usb_device
*udev
,struct dvb_usb_properties
*props
, int *cold
)
93 struct dvb_usb_device_description
*desc
= NULL
;
96 for (i
= 0; i
< props
->num_device_descs
; i
++) {
98 for (j
= 0; j
< DVB_USB_ID_MAX_NUM
&& props
->devices
[i
].cold_ids
[j
] != NULL
; j
++) {
99 deb_info("check for cold %x %x\n",props
->devices
[i
].cold_ids
[j
]->idVendor
, props
->devices
[i
].cold_ids
[j
]->idProduct
);
100 if (props
->devices
[i
].cold_ids
[j
]->idVendor
== le16_to_cpu(udev
->descriptor
.idVendor
) &&
101 props
->devices
[i
].cold_ids
[j
]->idProduct
== le16_to_cpu(udev
->descriptor
.idProduct
)) {
103 desc
= &props
->devices
[i
];
111 for (j
= 0; j
< DVB_USB_ID_MAX_NUM
&& props
->devices
[i
].warm_ids
[j
] != NULL
; j
++) {
112 deb_info("check for warm %x %x\n",props
->devices
[i
].warm_ids
[j
]->idVendor
, props
->devices
[i
].warm_ids
[j
]->idProduct
);
113 if (props
->devices
[i
].warm_ids
[j
]->idVendor
== le16_to_cpu(udev
->descriptor
.idVendor
) &&
114 props
->devices
[i
].warm_ids
[j
]->idProduct
== le16_to_cpu(udev
->descriptor
.idProduct
)) {
116 desc
= &props
->devices
[i
];
122 if (desc
!= NULL
&& props
->identify_state
!= NULL
)
123 props
->identify_state(udev
,props
,&desc
,cold
);
132 int dvb_usb_device_init(struct usb_interface
*intf
, struct dvb_usb_properties
133 *props
, struct module
*owner
,struct dvb_usb_device
**du
)
135 struct usb_device
*udev
= interface_to_usbdev(intf
);
136 struct dvb_usb_device
*d
= NULL
;
137 struct dvb_usb_device_description
*desc
= NULL
;
139 int ret
= -ENOMEM
,cold
=0;
144 if ((desc
= dvb_usb_find_device(udev
,props
,&cold
)) == NULL
) {
145 deb_err("something went very wrong, device was not found in current device list - let's see what comes next.\n");
150 info("found a '%s' in cold state, will try to load a firmware",desc
->name
);
151 ret
= dvb_usb_download_firmware(udev
,props
);
152 if (!props
->no_reconnect
)
156 info("found a '%s' in warm state.",desc
->name
);
157 d
= kzalloc(sizeof(struct dvb_usb_device
),GFP_KERNEL
);
159 err("no memory for 'struct dvb_usb_device'");
164 memcpy(&d
->props
,props
,sizeof(struct dvb_usb_properties
));
168 if (d
->props
.size_of_priv
> 0) {
169 d
->priv
= kzalloc(d
->props
.size_of_priv
,GFP_KERNEL
);
170 if (d
->priv
== NULL
) {
171 err("no memory for priv in 'struct dvb_usb_device'");
177 usb_set_intfdata(intf
, d
);
182 ret
= dvb_usb_init(d
);
185 info("%s successfully initialized and connected.",desc
->name
);
187 info("%s error while loading driver (%d)",desc
->name
,ret
);
190 EXPORT_SYMBOL(dvb_usb_device_init
);
192 void dvb_usb_device_exit(struct usb_interface
*intf
)
194 struct dvb_usb_device
*d
= usb_get_intfdata(intf
);
195 const char *name
= "generic DVB-USB module";
197 usb_set_intfdata(intf
,NULL
);
198 if (d
!= NULL
&& d
->desc
!= NULL
) {
199 name
= d
->desc
->name
;
202 info("%s successfully deinitialized and disconnected.",name
);
205 EXPORT_SYMBOL(dvb_usb_device_exit
);
207 MODULE_VERSION("0.3");
208 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
209 MODULE_DESCRIPTION("A library module containing commonly used USB and DVB function USB DVB devices");
210 MODULE_LICENSE("GPL");