2 * Abilis Systems Single DVB-T Receiver
3 * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
4 * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <linux/kernel.h>
21 #include <linux/errno.h>
22 #include <linux/slab.h>
24 #include <linux/usb.h>
26 #include "as102_drv.h"
27 #include "as102_usb_drv.h"
30 static void as102_usb_disconnect(struct usb_interface
*interface
);
31 static int as102_usb_probe(struct usb_interface
*interface
,
32 const struct usb_device_id
*id
);
34 static int as102_usb_start_stream(struct as102_dev_t
*dev
);
35 static void as102_usb_stop_stream(struct as102_dev_t
*dev
);
37 static int as102_open(struct inode
*inode
, struct file
*file
);
38 static int as102_release(struct inode
*inode
, struct file
*file
);
40 static struct usb_device_id as102_usb_id_table
[] = {
41 { USB_DEVICE(AS102_USB_DEVICE_VENDOR_ID
, AS102_USB_DEVICE_PID_0001
) },
42 { USB_DEVICE(PCTV_74E_USB_VID
, PCTV_74E_USB_PID
) },
43 { USB_DEVICE(ELGATO_EYETV_DTT_USB_VID
, ELGATO_EYETV_DTT_USB_PID
) },
44 { USB_DEVICE(NBOX_DVBT_DONGLE_USB_VID
, NBOX_DVBT_DONGLE_USB_PID
) },
45 { } /* Terminating entry */
48 /* Note that this table must always have the same number of entries as the
49 as102_usb_id_table struct */
50 static const char *as102_device_names
[] = {
51 AS102_REFERENCE_DESIGN
,
53 AS102_ELGATO_EYETV_DTT_NAME
,
54 AS102_NBOX_DVBT_DONGLE_NAME
,
55 NULL
/* Terminating entry */
58 struct usb_driver as102_usb_driver
= {
59 .name
= DRIVER_FULL_NAME
,
60 .probe
= as102_usb_probe
,
61 .disconnect
= as102_usb_disconnect
,
62 .id_table
= as102_usb_id_table
65 static const struct file_operations as102_dev_fops
= {
68 .release
= as102_release
,
71 static struct usb_class_driver as102_usb_class_driver
= {
73 .fops
= &as102_dev_fops
,
74 .minor_base
= AS102_DEVICE_MAJOR
,
77 static int as102_usb_xfer_cmd(struct as102_bus_adapter_t
*bus_adap
,
78 unsigned char *send_buf
, int send_buf_len
,
79 unsigned char *recv_buf
, int recv_buf_len
)
84 if (send_buf
!= NULL
) {
85 ret
= usb_control_msg(bus_adap
->usb_dev
,
86 usb_sndctrlpipe(bus_adap
->usb_dev
, 0),
87 AS102_USB_DEVICE_TX_CTRL_CMD
,
88 USB_DIR_OUT
| USB_TYPE_VENDOR
|
90 bus_adap
->cmd_xid
, /* value */
92 send_buf
, send_buf_len
,
93 USB_CTRL_SET_TIMEOUT
/* 200 */);
95 dprintk(debug
, "usb_control_msg(send) failed, err %i\n",
100 if (ret
!= send_buf_len
) {
101 dprintk(debug
, "only wrote %d of %d bytes\n",
107 if (recv_buf
!= NULL
) {
109 dprintk(debug
, "want to read: %d bytes\n", recv_buf_len
);
111 ret
= usb_control_msg(bus_adap
->usb_dev
,
112 usb_rcvctrlpipe(bus_adap
->usb_dev
, 0),
113 AS102_USB_DEVICE_RX_CTRL_CMD
,
114 USB_DIR_IN
| USB_TYPE_VENDOR
|
116 bus_adap
->cmd_xid
, /* value */
118 recv_buf
, recv_buf_len
,
119 USB_CTRL_GET_TIMEOUT
/* 200 */);
121 dprintk(debug
, "usb_control_msg(recv) failed, err %i\n",
126 dprintk(debug
, "read %d bytes\n", recv_buf_len
);
134 static int as102_send_ep1(struct as102_bus_adapter_t
*bus_adap
,
135 unsigned char *send_buf
,
139 int ret
= 0, actual_len
;
141 ret
= usb_bulk_msg(bus_adap
->usb_dev
,
142 usb_sndbulkpipe(bus_adap
->usb_dev
, 1),
143 send_buf
, send_buf_len
, &actual_len
, 200);
145 dprintk(debug
, "usb_bulk_msg(send) failed, err %i\n", ret
);
149 if (actual_len
!= send_buf_len
) {
150 dprintk(debug
, "only wrote %d of %d bytes\n",
151 actual_len
, send_buf_len
);
154 return ret
? ret
: actual_len
;
157 static int as102_read_ep2(struct as102_bus_adapter_t
*bus_adap
,
158 unsigned char *recv_buf
, int recv_buf_len
)
160 int ret
= 0, actual_len
;
162 if (recv_buf
== NULL
)
165 ret
= usb_bulk_msg(bus_adap
->usb_dev
,
166 usb_rcvbulkpipe(bus_adap
->usb_dev
, 2),
167 recv_buf
, recv_buf_len
, &actual_len
, 200);
169 dprintk(debug
, "usb_bulk_msg(recv) failed, err %i\n", ret
);
173 if (actual_len
!= recv_buf_len
) {
174 dprintk(debug
, "only read %d of %d bytes\n",
175 actual_len
, recv_buf_len
);
178 return ret
? ret
: actual_len
;
181 struct as102_priv_ops_t as102_priv_ops
= {
182 .upload_fw_pkt
= as102_send_ep1
,
183 .xfer_cmd
= as102_usb_xfer_cmd
,
184 .as102_read_ep2
= as102_read_ep2
,
185 .start_stream
= as102_usb_start_stream
,
186 .stop_stream
= as102_usb_stop_stream
,
189 static int as102_submit_urb_stream(struct as102_dev_t
*dev
, struct urb
*urb
)
193 usb_fill_bulk_urb(urb
,
194 dev
->bus_adap
.usb_dev
,
195 usb_rcvbulkpipe(dev
->bus_adap
.usb_dev
, 0x2),
196 urb
->transfer_buffer
,
198 as102_urb_stream_irq
,
201 err
= usb_submit_urb(urb
, GFP_ATOMIC
);
203 dprintk(debug
, "%s: usb_submit_urb failed\n", __func__
);
208 void as102_urb_stream_irq(struct urb
*urb
)
210 struct as102_dev_t
*as102_dev
= urb
->context
;
212 if (urb
->actual_length
> 0) {
213 dvb_dmx_swfilter(&as102_dev
->dvb_dmx
,
214 urb
->transfer_buffer
,
217 if (urb
->actual_length
== 0)
218 memset(urb
->transfer_buffer
, 0, AS102_USB_BUF_SIZE
);
221 /* is not stopped, re-submit urb */
222 if (as102_dev
->streaming
)
223 as102_submit_urb_stream(as102_dev
, urb
);
226 static void as102_free_usb_stream_buffer(struct as102_dev_t
*dev
)
232 for (i
= 0; i
< MAX_STREAM_URB
; i
++)
233 usb_free_urb(dev
->stream_urb
[i
]);
235 usb_free_coherent(dev
->bus_adap
.usb_dev
,
236 MAX_STREAM_URB
* AS102_USB_BUF_SIZE
,
242 static int as102_alloc_usb_stream_buffer(struct as102_dev_t
*dev
)
248 dev
->stream
= usb_alloc_coherent(dev
->bus_adap
.usb_dev
,
249 MAX_STREAM_URB
* AS102_USB_BUF_SIZE
,
253 dprintk(debug
, "%s: usb_buffer_alloc failed\n", __func__
);
257 memset(dev
->stream
, 0, MAX_STREAM_URB
* AS102_USB_BUF_SIZE
);
259 /* init urb buffers */
260 for (i
= 0; i
< MAX_STREAM_URB
; i
++) {
263 urb
= usb_alloc_urb(0, GFP_ATOMIC
);
265 dprintk(debug
, "%s: usb_alloc_urb failed\n", __func__
);
266 as102_free_usb_stream_buffer(dev
);
270 urb
->transfer_buffer
= dev
->stream
+ (i
* AS102_USB_BUF_SIZE
);
271 urb
->transfer_buffer_length
= AS102_USB_BUF_SIZE
;
273 dev
->stream_urb
[i
] = urb
;
279 static void as102_usb_stop_stream(struct as102_dev_t
*dev
)
283 for (i
= 0; i
< MAX_STREAM_URB
; i
++)
284 usb_kill_urb(dev
->stream_urb
[i
]);
287 static int as102_usb_start_stream(struct as102_dev_t
*dev
)
291 for (i
= 0; i
< MAX_STREAM_URB
; i
++) {
292 ret
= as102_submit_urb_stream(dev
, dev
->stream_urb
[i
]);
294 as102_usb_stop_stream(dev
);
302 static void as102_usb_release(struct kref
*kref
)
304 struct as102_dev_t
*as102_dev
;
308 as102_dev
= container_of(kref
, struct as102_dev_t
, kref
);
309 if (as102_dev
!= NULL
) {
310 usb_put_dev(as102_dev
->bus_adap
.usb_dev
);
317 static void as102_usb_disconnect(struct usb_interface
*intf
)
319 struct as102_dev_t
*as102_dev
;
323 /* extract as102_dev_t from usb_device private data */
324 as102_dev
= usb_get_intfdata(intf
);
326 /* unregister dvb layer */
327 as102_dvb_unregister(as102_dev
);
329 /* free usb buffers */
330 as102_free_usb_stream_buffer(as102_dev
);
332 usb_set_intfdata(intf
, NULL
);
334 /* usb unregister device */
335 usb_deregister_dev(intf
, &as102_usb_class_driver
);
337 /* decrement usage counter */
338 kref_put(&as102_dev
->kref
, as102_usb_release
);
340 printk(KERN_INFO
"%s: device has been disconnected\n", DRIVER_NAME
);
345 static int as102_usb_probe(struct usb_interface
*intf
,
346 const struct usb_device_id
*id
)
349 struct as102_dev_t
*as102_dev
;
354 as102_dev
= kzalloc(sizeof(struct as102_dev_t
), GFP_KERNEL
);
355 if (as102_dev
== NULL
) {
356 err("%s: kzalloc failed", __func__
);
360 /* This should never actually happen */
361 if ((sizeof(as102_usb_id_table
) / sizeof(struct usb_device_id
)) !=
362 (sizeof(as102_device_names
) / sizeof(const char *))) {
363 printk(KERN_ERR
"Device names table invalid size");
367 /* Assign the user-friendly device name */
368 for (i
= 0; i
< (sizeof(as102_usb_id_table
) /
369 sizeof(struct usb_device_id
)); i
++) {
370 if (id
== &as102_usb_id_table
[i
])
371 as102_dev
->name
= as102_device_names
[i
];
374 if (as102_dev
->name
== NULL
)
375 as102_dev
->name
= "Unknown AS102 device";
377 /* set private callback functions */
378 as102_dev
->bus_adap
.ops
= &as102_priv_ops
;
380 /* init cmd token for usb bus */
381 as102_dev
->bus_adap
.cmd
= &as102_dev
->bus_adap
.token
.usb
.c
;
382 as102_dev
->bus_adap
.rsp
= &as102_dev
->bus_adap
.token
.usb
.r
;
384 /* init kernel device reference */
385 kref_init(&as102_dev
->kref
);
387 /* store as102 device to usb_device private data */
388 usb_set_intfdata(intf
, (void *) as102_dev
);
390 /* store in as102 device the usb_device pointer */
391 as102_dev
->bus_adap
.usb_dev
= usb_get_dev(interface_to_usbdev(intf
));
393 /* we can register the device now, as it is ready */
394 ret
= usb_register_dev(intf
, &as102_usb_class_driver
);
396 /* something prevented us from registering this driver */
397 err("%s: usb_register_dev() failed (errno = %d)",
402 printk(KERN_INFO
"%s: device has been detected\n", DRIVER_NAME
);
404 /* request buffer allocation for streaming */
405 ret
= as102_alloc_usb_stream_buffer(as102_dev
);
409 /* register dvb layer */
410 ret
= as102_dvb_register(as102_dev
);
416 usb_set_intfdata(intf
, NULL
);
421 static int as102_open(struct inode
*inode
, struct file
*file
)
423 int ret
= 0, minor
= 0;
424 struct usb_interface
*intf
= NULL
;
425 struct as102_dev_t
*dev
= NULL
;
429 /* read minor from inode */
430 minor
= iminor(inode
);
432 /* fetch device from usb interface */
433 intf
= usb_find_interface(&as102_usb_driver
, minor
);
435 printk(KERN_ERR
"%s: can't find device for minor %d\n",
442 dev
= usb_get_intfdata(intf
);
448 /* save our device object in the file's private structure */
449 file
->private_data
= dev
;
451 /* increment our usage count for the device */
452 kref_get(&dev
->kref
);
459 static int as102_release(struct inode
*inode
, struct file
*file
)
462 struct as102_dev_t
*dev
= NULL
;
466 dev
= file
->private_data
;
468 /* decrement the count on our device */
469 kref_put(&dev
->kref
, as102_usb_release
);
476 MODULE_DEVICE_TABLE(usb
, as102_usb_id_table
);
478 /* EOF - vim: set textwidth=80 ts=8 sw=8 sts=8 noet: */