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 { } /* Terminating entry */
47 struct usb_driver as102_usb_driver = {
48 .name = DRIVER_FULL_NAME,
49 .probe = as102_usb_probe,
50 .disconnect = as102_usb_disconnect,
51 .id_table = as102_usb_id_table
54 static const struct file_operations as102_dev_fops = {
57 .release = as102_release,
60 static struct usb_class_driver as102_usb_class_driver = {
62 .fops = &as102_dev_fops,
63 .minor_base = AS102_DEVICE_MAJOR,
66 static int as102_usb_xfer_cmd(struct as102_bus_adapter_t *bus_adap,
67 unsigned char *send_buf, int send_buf_len,
68 unsigned char *recv_buf, int recv_buf_len)
73 if (send_buf != NULL) {
74 ret = usb_control_msg(bus_adap->usb_dev,
75 usb_sndctrlpipe(bus_adap->usb_dev, 0),
76 AS102_USB_DEVICE_TX_CTRL_CMD,
77 USB_DIR_OUT | USB_TYPE_VENDOR |
79 bus_adap->cmd_xid, /* value */
81 send_buf, send_buf_len,
82 USB_CTRL_SET_TIMEOUT /* 200 */);
84 dprintk(debug, "usb_control_msg(send) failed, err %i\n",
89 if (ret != send_buf_len) {
90 dprintk(debug, "only wrote %d of %d bytes\n",
96 if (recv_buf != NULL) {
98 dprintk(debug, "want to read: %d bytes\n", recv_buf_len);
100 ret = usb_control_msg(bus_adap->usb_dev,
101 usb_rcvctrlpipe(bus_adap->usb_dev, 0),
102 AS102_USB_DEVICE_RX_CTRL_CMD,
103 USB_DIR_IN | USB_TYPE_VENDOR |
105 bus_adap->cmd_xid, /* value */
107 recv_buf, recv_buf_len,
108 USB_CTRL_GET_TIMEOUT /* 200 */);
110 dprintk(debug, "usb_control_msg(recv) failed, err %i\n",
115 dprintk(debug, "read %d bytes\n", recv_buf_len);
123 static int as102_send_ep1(struct as102_bus_adapter_t *bus_adap,
124 unsigned char *send_buf,
128 int ret = 0, actual_len;
130 ret = usb_bulk_msg(bus_adap->usb_dev,
131 usb_sndbulkpipe(bus_adap->usb_dev, 1),
132 send_buf, send_buf_len, &actual_len, 200);
134 dprintk(debug, "usb_bulk_msg(send) failed, err %i\n", ret);
138 if (actual_len != send_buf_len) {
139 dprintk(debug, "only wrote %d of %d bytes\n",
140 actual_len, send_buf_len);
143 return ret ? ret : actual_len;
146 static int as102_read_ep2(struct as102_bus_adapter_t *bus_adap,
147 unsigned char *recv_buf, int recv_buf_len)
149 int ret = 0, actual_len;
151 if (recv_buf == NULL)
154 ret = usb_bulk_msg(bus_adap->usb_dev,
155 usb_rcvbulkpipe(bus_adap->usb_dev, 2),
156 recv_buf, recv_buf_len, &actual_len, 200);
158 dprintk(debug, "usb_bulk_msg(recv) failed, err %i\n", ret);
162 if (actual_len != recv_buf_len) {
163 dprintk(debug, "only read %d of %d bytes\n",
164 actual_len, recv_buf_len);
167 return ret ? ret : actual_len;
170 struct as102_priv_ops_t as102_priv_ops = {
171 .upload_fw_pkt = as102_send_ep1,
172 .xfer_cmd = as102_usb_xfer_cmd,
173 .as102_read_ep2 = as102_read_ep2,
174 .start_stream = as102_usb_start_stream,
175 .stop_stream = as102_usb_stop_stream,
178 static int as102_submit_urb_stream(struct as102_dev_t *dev, struct urb *urb)
182 usb_fill_bulk_urb(urb,
183 dev->bus_adap.usb_dev,
184 usb_rcvbulkpipe(dev->bus_adap.usb_dev, 0x2),
185 urb->transfer_buffer,
187 as102_urb_stream_irq,
190 err = usb_submit_urb(urb, GFP_ATOMIC);
192 dprintk(debug, "%s: usb_submit_urb failed\n", __func__);
197 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18))
198 void as102_urb_stream_irq(struct urb *urb, struct pt_regs *regs)
200 void as102_urb_stream_irq(struct urb *urb)
203 struct as102_dev_t *as102_dev = urb->context;
205 if (urb->actual_length > 0) {
206 #if defined(CONFIG_DVB_CORE) || defined(CONFIG_DVB_CORE_MODULE)
207 dvb_dmx_swfilter(&as102_dev->dvb_dmx,
208 urb->transfer_buffer,
214 if (urb->actual_length == 0)
215 memset(urb->transfer_buffer, 0, AS102_USB_BUF_SIZE);
218 /* is not stopped, re-submit urb */
219 if (as102_dev->streaming)
220 as102_submit_urb_stream(as102_dev, urb);
223 static void as102_free_usb_stream_buffer(struct as102_dev_t *dev)
229 for (i = 0; i < MAX_STREAM_URB; i++)
230 usb_free_urb(dev->stream_urb[i]);
232 usb_buffer_free(dev->bus_adap.usb_dev,
233 MAX_STREAM_URB * AS102_USB_BUF_SIZE,
239 static int as102_alloc_usb_stream_buffer(struct as102_dev_t *dev)
245 dev->stream = usb_buffer_alloc(dev->bus_adap.usb_dev,
246 MAX_STREAM_URB * AS102_USB_BUF_SIZE,
250 dprintk(debug, "%s: usb_buffer_alloc failed\n", __func__);
254 memset(dev->stream, 0, MAX_STREAM_URB * AS102_USB_BUF_SIZE);
256 /* init urb buffers */
257 for (i = 0; i < MAX_STREAM_URB; i++) {
260 urb = usb_alloc_urb(0, GFP_ATOMIC);
262 dprintk(debug, "%s: usb_alloc_urb failed\n", __func__);
263 as102_free_usb_stream_buffer(dev);
267 urb->transfer_buffer = dev->stream + (i * AS102_USB_BUF_SIZE);
268 urb->transfer_buffer_length = AS102_USB_BUF_SIZE;
270 dev->stream_urb[i] = urb;
276 static void as102_usb_stop_stream(struct as102_dev_t *dev)
280 for (i = 0; i < MAX_STREAM_URB; i++)
281 usb_kill_urb(dev->stream_urb[i]);
284 static int as102_usb_start_stream(struct as102_dev_t *dev)
288 for (i = 0; i < MAX_STREAM_URB; i++) {
289 ret = as102_submit_urb_stream(dev, dev->stream_urb[i]);
291 as102_usb_stop_stream(dev);
299 static void as102_usb_release(struct kref *kref)
301 struct as102_dev_t *as102_dev;
305 as102_dev = container_of(kref, struct as102_dev_t, kref);
306 if (as102_dev != NULL) {
307 usb_put_dev(as102_dev->bus_adap.usb_dev);
314 static void as102_usb_disconnect(struct usb_interface *intf)
316 struct as102_dev_t *as102_dev;
320 /* extract as102_dev_t from usb_device private data */
321 as102_dev = usb_get_intfdata(intf);
323 /* unregister dvb layer */
324 as102_dvb_unregister(as102_dev);
326 /* free usb buffers */
327 as102_free_usb_stream_buffer(as102_dev);
329 usb_set_intfdata(intf, NULL);
331 /* usb unregister device */
332 usb_deregister_dev(intf, &as102_usb_class_driver);
334 /* decrement usage counter */
335 kref_put(&as102_dev->kref, as102_usb_release);
337 printk(KERN_INFO "%s: device has been disconnected\n", DRIVER_NAME);
342 static int as102_usb_probe(struct usb_interface *intf,
343 const struct usb_device_id *id)
346 struct as102_dev_t *as102_dev;
350 as102_dev = kzalloc(sizeof(struct as102_dev_t), GFP_KERNEL);
351 if (as102_dev == NULL) {
352 err("%s: kzalloc failed", __func__);
356 /* set private callback functions */
357 as102_dev->bus_adap.ops = &as102_priv_ops;
359 /* init cmd token for usb bus */
360 as102_dev->bus_adap.cmd = &as102_dev->bus_adap.token.usb.c;
361 as102_dev->bus_adap.rsp = &as102_dev->bus_adap.token.usb.r;
363 /* init kernel device reference */
364 kref_init(&as102_dev->kref);
366 /* store as102 device to usb_device private data */
367 usb_set_intfdata(intf, (void *) as102_dev);
369 /* store in as102 device the usb_device pointer */
370 as102_dev->bus_adap.usb_dev = usb_get_dev(interface_to_usbdev(intf));
372 /* we can register the device now, as it is ready */
373 ret = usb_register_dev(intf, &as102_usb_class_driver);
375 /* something prevented us from registering this driver */
376 err("%s: usb_register_dev() failed (errno = %d)",
381 printk(KERN_INFO "%s: device has been detected\n", DRIVER_NAME);
383 /* request buffer allocation for streaming */
384 ret = as102_alloc_usb_stream_buffer(as102_dev);
388 /* register dvb layer */
389 ret = as102_dvb_register(as102_dev);
395 usb_set_intfdata(intf, NULL);
400 static int as102_open(struct inode *inode, struct file *file)
402 int ret = 0, minor = 0;
403 struct usb_interface *intf = NULL;
404 struct as102_dev_t *dev = NULL;
408 /* read minor from inode */
409 minor = iminor(inode);
411 /* fetch device from usb interface */
412 intf = usb_find_interface(&as102_usb_driver, minor);
414 printk(KERN_ERR "%s: can't find device for minor %d\n",
421 dev = usb_get_intfdata(intf);
427 /* save our device object in the file's private structure */
428 file->private_data = dev;
430 /* increment our usage count for the device */
431 kref_get(&dev->kref);
438 static int as102_release(struct inode *inode, struct file *file)
441 struct as102_dev_t *dev = NULL;
445 dev = file->private_data;
447 /* decrement the count on our device */
448 kref_put(&dev->kref, as102_usb_release);
455 MODULE_DEVICE_TABLE(usb, as102_usb_id_table);
457 /* EOF - vim: set textwidth=80 ts=8 sw=8 sts=8 noet: */