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 { USB_DEVICE(SKY_IT_DIGITAL_KEY_USB_VID, SKY_IT_DIGITAL_KEY_USB_PID) },
46 { } /* Terminating entry */
49 /* Note that this table must always have the same number of entries as the
50 as102_usb_id_table struct */
51 static const char * const as102_device_names[] = {
52 AS102_REFERENCE_DESIGN,
54 AS102_ELGATO_EYETV_DTT_NAME,
55 AS102_NBOX_DVBT_DONGLE_NAME,
56 AS102_SKY_IT_DIGITAL_KEY_NAME,
57 NULL /* Terminating entry */
60 /* eLNA configuration: devices built on the reference design work best
61 with 0xA0, while custom designs seem to require 0xC0 */
62 static uint8_t const as102_elna_cfg[] = {
68 0x00 /* Terminating entry */
71 struct usb_driver as102_usb_driver = {
72 .name = DRIVER_FULL_NAME,
73 .probe = as102_usb_probe,
74 .disconnect = as102_usb_disconnect,
75 .id_table = as102_usb_id_table
78 static const struct file_operations as102_dev_fops = {
81 .release = as102_release,
84 static struct usb_class_driver as102_usb_class_driver = {
86 .fops = &as102_dev_fops,
87 .minor_base = AS102_DEVICE_MAJOR,
90 static int as102_usb_xfer_cmd(struct as10x_bus_adapter_t *bus_adap,
91 unsigned char *send_buf, int send_buf_len,
92 unsigned char *recv_buf, int recv_buf_len)
97 if (send_buf != NULL) {
98 ret = usb_control_msg(bus_adap->usb_dev,
99 usb_sndctrlpipe(bus_adap->usb_dev, 0),
100 AS102_USB_DEVICE_TX_CTRL_CMD,
101 USB_DIR_OUT | USB_TYPE_VENDOR |
103 bus_adap->cmd_xid, /* value */
105 send_buf, send_buf_len,
106 USB_CTRL_SET_TIMEOUT /* 200 */);
108 dprintk(debug, "usb_control_msg(send) failed, err %i\n",
113 if (ret != send_buf_len) {
114 dprintk(debug, "only wrote %d of %d bytes\n",
120 if (recv_buf != NULL) {
122 dprintk(debug, "want to read: %d bytes\n", recv_buf_len);
124 ret = usb_control_msg(bus_adap->usb_dev,
125 usb_rcvctrlpipe(bus_adap->usb_dev, 0),
126 AS102_USB_DEVICE_RX_CTRL_CMD,
127 USB_DIR_IN | USB_TYPE_VENDOR |
129 bus_adap->cmd_xid, /* value */
131 recv_buf, recv_buf_len,
132 USB_CTRL_GET_TIMEOUT /* 200 */);
134 dprintk(debug, "usb_control_msg(recv) failed, err %i\n",
139 dprintk(debug, "read %d bytes\n", recv_buf_len);
147 static int as102_send_ep1(struct as10x_bus_adapter_t *bus_adap,
148 unsigned char *send_buf,
152 int ret = 0, actual_len;
154 ret = usb_bulk_msg(bus_adap->usb_dev,
155 usb_sndbulkpipe(bus_adap->usb_dev, 1),
156 send_buf, send_buf_len, &actual_len, 200);
158 dprintk(debug, "usb_bulk_msg(send) failed, err %i\n", ret);
162 if (actual_len != send_buf_len) {
163 dprintk(debug, "only wrote %d of %d bytes\n",
164 actual_len, send_buf_len);
167 return ret ? ret : actual_len;
170 static int as102_read_ep2(struct as10x_bus_adapter_t *bus_adap,
171 unsigned char *recv_buf, int recv_buf_len)
173 int ret = 0, actual_len;
175 if (recv_buf == NULL)
178 ret = usb_bulk_msg(bus_adap->usb_dev,
179 usb_rcvbulkpipe(bus_adap->usb_dev, 2),
180 recv_buf, recv_buf_len, &actual_len, 200);
182 dprintk(debug, "usb_bulk_msg(recv) failed, err %i\n", ret);
186 if (actual_len != recv_buf_len) {
187 dprintk(debug, "only read %d of %d bytes\n",
188 actual_len, recv_buf_len);
191 return ret ? ret : actual_len;
194 struct as102_priv_ops_t as102_priv_ops = {
195 .upload_fw_pkt = as102_send_ep1,
196 .xfer_cmd = as102_usb_xfer_cmd,
197 .as102_read_ep2 = as102_read_ep2,
198 .start_stream = as102_usb_start_stream,
199 .stop_stream = as102_usb_stop_stream,
202 static int as102_submit_urb_stream(struct as102_dev_t *dev, struct urb *urb)
206 usb_fill_bulk_urb(urb,
207 dev->bus_adap.usb_dev,
208 usb_rcvbulkpipe(dev->bus_adap.usb_dev, 0x2),
209 urb->transfer_buffer,
211 as102_urb_stream_irq,
214 err = usb_submit_urb(urb, GFP_ATOMIC);
216 dprintk(debug, "%s: usb_submit_urb failed\n", __func__);
221 void as102_urb_stream_irq(struct urb *urb)
223 struct as102_dev_t *as102_dev = urb->context;
225 if (urb->actual_length > 0) {
226 dvb_dmx_swfilter(&as102_dev->dvb_dmx,
227 urb->transfer_buffer,
230 if (urb->actual_length == 0)
231 memset(urb->transfer_buffer, 0, AS102_USB_BUF_SIZE);
234 /* is not stopped, re-submit urb */
235 if (as102_dev->streaming)
236 as102_submit_urb_stream(as102_dev, urb);
239 static void as102_free_usb_stream_buffer(struct as102_dev_t *dev)
245 for (i = 0; i < MAX_STREAM_URB; i++)
246 usb_free_urb(dev->stream_urb[i]);
248 usb_free_coherent(dev->bus_adap.usb_dev,
249 MAX_STREAM_URB * AS102_USB_BUF_SIZE,
255 static int as102_alloc_usb_stream_buffer(struct as102_dev_t *dev)
261 dev->stream = usb_alloc_coherent(dev->bus_adap.usb_dev,
262 MAX_STREAM_URB * AS102_USB_BUF_SIZE,
266 dprintk(debug, "%s: usb_buffer_alloc failed\n", __func__);
270 memset(dev->stream, 0, MAX_STREAM_URB * AS102_USB_BUF_SIZE);
272 /* init urb buffers */
273 for (i = 0; i < MAX_STREAM_URB; i++) {
276 urb = usb_alloc_urb(0, GFP_ATOMIC);
278 dprintk(debug, "%s: usb_alloc_urb failed\n", __func__);
279 as102_free_usb_stream_buffer(dev);
283 urb->transfer_buffer = dev->stream + (i * AS102_USB_BUF_SIZE);
284 urb->transfer_dma = dev->dma_addr + (i * AS102_USB_BUF_SIZE);
285 urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
286 urb->transfer_buffer_length = AS102_USB_BUF_SIZE;
288 dev->stream_urb[i] = urb;
294 static void as102_usb_stop_stream(struct as102_dev_t *dev)
298 for (i = 0; i < MAX_STREAM_URB; i++)
299 usb_kill_urb(dev->stream_urb[i]);
302 static int as102_usb_start_stream(struct as102_dev_t *dev)
306 for (i = 0; i < MAX_STREAM_URB; i++) {
307 ret = as102_submit_urb_stream(dev, dev->stream_urb[i]);
309 as102_usb_stop_stream(dev);
317 static void as102_usb_release(struct kref *kref)
319 struct as102_dev_t *as102_dev;
323 as102_dev = container_of(kref, struct as102_dev_t, kref);
324 if (as102_dev != NULL) {
325 usb_put_dev(as102_dev->bus_adap.usb_dev);
332 static void as102_usb_disconnect(struct usb_interface *intf)
334 struct as102_dev_t *as102_dev;
338 /* extract as102_dev_t from usb_device private data */
339 as102_dev = usb_get_intfdata(intf);
341 /* unregister dvb layer */
342 as102_dvb_unregister(as102_dev);
344 /* free usb buffers */
345 as102_free_usb_stream_buffer(as102_dev);
347 usb_set_intfdata(intf, NULL);
349 /* usb unregister device */
350 usb_deregister_dev(intf, &as102_usb_class_driver);
352 /* decrement usage counter */
353 kref_put(&as102_dev->kref, as102_usb_release);
355 pr_info("%s: device has been disconnected\n", DRIVER_NAME);
360 static int as102_usb_probe(struct usb_interface *intf,
361 const struct usb_device_id *id)
364 struct as102_dev_t *as102_dev;
369 /* This should never actually happen */
370 if (ARRAY_SIZE(as102_usb_id_table) !=
371 (sizeof(as102_device_names) / sizeof(const char *))) {
372 pr_err("Device names table invalid size");
376 as102_dev = kzalloc(sizeof(struct as102_dev_t), GFP_KERNEL);
377 if (as102_dev == NULL)
380 /* Assign the user-friendly device name */
381 for (i = 0; i < ARRAY_SIZE(as102_usb_id_table); i++) {
382 if (id == &as102_usb_id_table[i]) {
383 as102_dev->name = as102_device_names[i];
384 as102_dev->elna_cfg = as102_elna_cfg[i];
388 if (as102_dev->name == NULL)
389 as102_dev->name = "Unknown AS102 device";
391 /* set private callback functions */
392 as102_dev->bus_adap.ops = &as102_priv_ops;
394 /* init cmd token for usb bus */
395 as102_dev->bus_adap.cmd = &as102_dev->bus_adap.token.usb.c;
396 as102_dev->bus_adap.rsp = &as102_dev->bus_adap.token.usb.r;
398 /* init kernel device reference */
399 kref_init(&as102_dev->kref);
401 /* store as102 device to usb_device private data */
402 usb_set_intfdata(intf, (void *) as102_dev);
404 /* store in as102 device the usb_device pointer */
405 as102_dev->bus_adap.usb_dev = usb_get_dev(interface_to_usbdev(intf));
407 /* we can register the device now, as it is ready */
408 ret = usb_register_dev(intf, &as102_usb_class_driver);
410 /* something prevented us from registering this driver */
412 "%s: usb_register_dev() failed (errno = %d)\n",
417 pr_info("%s: device has been detected\n", DRIVER_NAME);
419 /* request buffer allocation for streaming */
420 ret = as102_alloc_usb_stream_buffer(as102_dev);
424 /* register dvb layer */
425 ret = as102_dvb_register(as102_dev);
431 usb_set_intfdata(intf, NULL);
436 static int as102_open(struct inode *inode, struct file *file)
438 int ret = 0, minor = 0;
439 struct usb_interface *intf = NULL;
440 struct as102_dev_t *dev = NULL;
444 /* read minor from inode */
445 minor = iminor(inode);
447 /* fetch device from usb interface */
448 intf = usb_find_interface(&as102_usb_driver, minor);
450 pr_err("%s: can't find device for minor %d\n",
457 dev = usb_get_intfdata(intf);
463 /* save our device object in the file's private structure */
464 file->private_data = dev;
466 /* increment our usage count for the device */
467 kref_get(&dev->kref);
474 static int as102_release(struct inode *inode, struct file *file)
477 struct as102_dev_t *dev = NULL;
481 dev = file->private_data;
483 /* decrement the count on our device */
484 kref_put(&dev->kref, as102_usb_release);
491 MODULE_DEVICE_TABLE(usb, as102_usb_id_table);