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Commit | Line | Data |
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41b44e04 PH |
1 | /* |
2 | * Abilis Systems Single DVB-T Receiver | |
3 | * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com> | |
c7a6c001 | 4 | * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com> |
41b44e04 PH |
5 | * |
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) | |
9 | * any later version. | |
10 | * | |
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. | |
41b44e04 PH |
15 | */ |
16 | #include <linux/kernel.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/mm.h> | |
20 | #include <linux/usb.h> | |
21 | ||
22 | #include "as102_drv.h" | |
23 | #include "as102_usb_drv.h" | |
24 | #include "as102_fw.h" | |
25 | ||
26 | static void as102_usb_disconnect(struct usb_interface *interface); | |
27 | static int as102_usb_probe(struct usb_interface *interface, | |
28 | const struct usb_device_id *id); | |
29 | ||
30 | static int as102_usb_start_stream(struct as102_dev_t *dev); | |
31 | static void as102_usb_stop_stream(struct as102_dev_t *dev); | |
32 | ||
33 | static int as102_open(struct inode *inode, struct file *file); | |
34 | static int as102_release(struct inode *inode, struct file *file); | |
35 | ||
36 | static struct usb_device_id as102_usb_id_table[] = { | |
37 | { USB_DEVICE(AS102_USB_DEVICE_VENDOR_ID, AS102_USB_DEVICE_PID_0001) }, | |
38 | { USB_DEVICE(PCTV_74E_USB_VID, PCTV_74E_USB_PID) }, | |
5f9745b2 | 39 | { USB_DEVICE(ELGATO_EYETV_DTT_USB_VID, ELGATO_EYETV_DTT_USB_PID) }, |
8be62e73 | 40 | { USB_DEVICE(NBOX_DVBT_DONGLE_USB_VID, NBOX_DVBT_DONGLE_USB_PID) }, |
dd7aaa4d | 41 | { USB_DEVICE(SKY_IT_DIGITAL_KEY_USB_VID, SKY_IT_DIGITAL_KEY_USB_PID) }, |
41b44e04 PH |
42 | { } /* Terminating entry */ |
43 | }; | |
44 | ||
4f7b7c01 DH |
45 | /* Note that this table must always have the same number of entries as the |
46 | as102_usb_id_table struct */ | |
d758b9ef | 47 | static const char * const as102_device_names[] = { |
4f7b7c01 DH |
48 | AS102_REFERENCE_DESIGN, |
49 | AS102_PCTV_74E, | |
50 | AS102_ELGATO_EYETV_DTT_NAME, | |
8be62e73 | 51 | AS102_NBOX_DVBT_DONGLE_NAME, |
dd7aaa4d | 52 | AS102_SKY_IT_DIGITAL_KEY_NAME, |
4f7b7c01 DH |
53 | NULL /* Terminating entry */ |
54 | }; | |
55 | ||
abfac0b6 GG |
56 | /* eLNA configuration: devices built on the reference design work best |
57 | with 0xA0, while custom designs seem to require 0xC0 */ | |
58 | static uint8_t const as102_elna_cfg[] = { | |
59 | 0xA0, | |
60 | 0xC0, | |
61 | 0xC0, | |
62 | 0xA0, | |
63 | 0xA0, | |
64 | 0x00 /* Terminating entry */ | |
65 | }; | |
66 | ||
41b44e04 | 67 | struct usb_driver as102_usb_driver = { |
14e0e4bf SN |
68 | .name = DRIVER_FULL_NAME, |
69 | .probe = as102_usb_probe, | |
70 | .disconnect = as102_usb_disconnect, | |
71 | .id_table = as102_usb_id_table | |
41b44e04 PH |
72 | }; |
73 | ||
c7a6c001 | 74 | static const struct file_operations as102_dev_fops = { |
14e0e4bf SN |
75 | .owner = THIS_MODULE, |
76 | .open = as102_open, | |
77 | .release = as102_release, | |
41b44e04 PH |
78 | }; |
79 | ||
80 | static struct usb_class_driver as102_usb_class_driver = { | |
81 | .name = "aton2-%d", | |
82 | .fops = &as102_dev_fops, | |
83 | .minor_base = AS102_DEVICE_MAJOR, | |
84 | }; | |
85 | ||
34490a0a | 86 | static int as102_usb_xfer_cmd(struct as10x_bus_adapter_t *bus_adap, |
41b44e04 | 87 | unsigned char *send_buf, int send_buf_len, |
c7a6c001 DH |
88 | unsigned char *recv_buf, int recv_buf_len) |
89 | { | |
41b44e04 | 90 | int ret = 0; |
41b44e04 | 91 | |
c7a6c001 | 92 | if (send_buf != NULL) { |
41b44e04 PH |
93 | ret = usb_control_msg(bus_adap->usb_dev, |
94 | usb_sndctrlpipe(bus_adap->usb_dev, 0), | |
95 | AS102_USB_DEVICE_TX_CTRL_CMD, | |
c7a6c001 DH |
96 | USB_DIR_OUT | USB_TYPE_VENDOR | |
97 | USB_RECIP_DEVICE, | |
41b44e04 PH |
98 | bus_adap->cmd_xid, /* value */ |
99 | 0, /* index */ | |
100 | send_buf, send_buf_len, | |
101 | USB_CTRL_SET_TIMEOUT /* 200 */); | |
c7a6c001 | 102 | if (ret < 0) { |
2179de60 MK |
103 | dev_dbg(&bus_adap->usb_dev->dev, |
104 | "usb_control_msg(send) failed, err %i\n", ret); | |
41b44e04 PH |
105 | return ret; |
106 | } | |
107 | ||
c7a6c001 | 108 | if (ret != send_buf_len) { |
2179de60 MK |
109 | dev_dbg(&bus_adap->usb_dev->dev, |
110 | "only wrote %d of %d bytes\n", ret, send_buf_len); | |
41b44e04 PH |
111 | return -1; |
112 | } | |
113 | } | |
114 | ||
c7a6c001 | 115 | if (recv_buf != NULL) { |
41b44e04 | 116 | #ifdef TRACE |
2179de60 MK |
117 | dev_dbg(bus_adap->usb_dev->dev, |
118 | "want to read: %d bytes\n", recv_buf_len); | |
41b44e04 PH |
119 | #endif |
120 | ret = usb_control_msg(bus_adap->usb_dev, | |
121 | usb_rcvctrlpipe(bus_adap->usb_dev, 0), | |
122 | AS102_USB_DEVICE_RX_CTRL_CMD, | |
c7a6c001 DH |
123 | USB_DIR_IN | USB_TYPE_VENDOR | |
124 | USB_RECIP_DEVICE, | |
41b44e04 PH |
125 | bus_adap->cmd_xid, /* value */ |
126 | 0, /* index */ | |
127 | recv_buf, recv_buf_len, | |
128 | USB_CTRL_GET_TIMEOUT /* 200 */); | |
c7a6c001 | 129 | if (ret < 0) { |
2179de60 MK |
130 | dev_dbg(&bus_adap->usb_dev->dev, |
131 | "usb_control_msg(recv) failed, err %i\n", ret); | |
41b44e04 PH |
132 | return ret; |
133 | } | |
134 | #ifdef TRACE | |
2179de60 MK |
135 | dev_dbg(bus_adap->usb_dev->dev, |
136 | "read %d bytes\n", recv_buf_len); | |
41b44e04 PH |
137 | #endif |
138 | } | |
139 | ||
41b44e04 PH |
140 | return ret; |
141 | } | |
142 | ||
34490a0a | 143 | static int as102_send_ep1(struct as10x_bus_adapter_t *bus_adap, |
41b44e04 PH |
144 | unsigned char *send_buf, |
145 | int send_buf_len, | |
c7a6c001 DH |
146 | int swap32) |
147 | { | |
271430ef | 148 | int ret, actual_len; |
41b44e04 | 149 | |
c7a6c001 DH |
150 | ret = usb_bulk_msg(bus_adap->usb_dev, |
151 | usb_sndbulkpipe(bus_adap->usb_dev, 1), | |
41b44e04 | 152 | send_buf, send_buf_len, &actual_len, 200); |
c7a6c001 | 153 | if (ret) { |
2179de60 MK |
154 | dev_dbg(&bus_adap->usb_dev->dev, |
155 | "usb_bulk_msg(send) failed, err %i\n", ret); | |
41b44e04 PH |
156 | return ret; |
157 | } | |
158 | ||
c7a6c001 | 159 | if (actual_len != send_buf_len) { |
2179de60 MK |
160 | dev_dbg(&bus_adap->usb_dev->dev, "only wrote %d of %d bytes\n", |
161 | actual_len, send_buf_len); | |
41b44e04 PH |
162 | return -1; |
163 | } | |
271430ef | 164 | return actual_len; |
41b44e04 PH |
165 | } |
166 | ||
34490a0a | 167 | static int as102_read_ep2(struct as10x_bus_adapter_t *bus_adap, |
c7a6c001 DH |
168 | unsigned char *recv_buf, int recv_buf_len) |
169 | { | |
271430ef | 170 | int ret, actual_len; |
41b44e04 | 171 | |
c7a6c001 | 172 | if (recv_buf == NULL) |
41b44e04 PH |
173 | return -EINVAL; |
174 | ||
c7a6c001 DH |
175 | ret = usb_bulk_msg(bus_adap->usb_dev, |
176 | usb_rcvbulkpipe(bus_adap->usb_dev, 2), | |
41b44e04 | 177 | recv_buf, recv_buf_len, &actual_len, 200); |
c7a6c001 | 178 | if (ret) { |
2179de60 MK |
179 | dev_dbg(&bus_adap->usb_dev->dev, |
180 | "usb_bulk_msg(recv) failed, err %i\n", ret); | |
41b44e04 PH |
181 | return ret; |
182 | } | |
183 | ||
c7a6c001 | 184 | if (actual_len != recv_buf_len) { |
2179de60 MK |
185 | dev_dbg(&bus_adap->usb_dev->dev, "only read %d of %d bytes\n", |
186 | actual_len, recv_buf_len); | |
41b44e04 PH |
187 | return -1; |
188 | } | |
271430ef | 189 | return actual_len; |
41b44e04 PH |
190 | } |
191 | ||
f691ba98 | 192 | static const struct as102_priv_ops_t as102_priv_ops = { |
41b44e04 PH |
193 | .upload_fw_pkt = as102_send_ep1, |
194 | .xfer_cmd = as102_usb_xfer_cmd, | |
195 | .as102_read_ep2 = as102_read_ep2, | |
196 | .start_stream = as102_usb_start_stream, | |
197 | .stop_stream = as102_usb_stop_stream, | |
198 | }; | |
199 | ||
c7a6c001 DH |
200 | static int as102_submit_urb_stream(struct as102_dev_t *dev, struct urb *urb) |
201 | { | |
41b44e04 PH |
202 | int err; |
203 | ||
204 | usb_fill_bulk_urb(urb, | |
205 | dev->bus_adap.usb_dev, | |
206 | usb_rcvbulkpipe(dev->bus_adap.usb_dev, 0x2), | |
207 | urb->transfer_buffer, | |
208 | AS102_USB_BUF_SIZE, | |
209 | as102_urb_stream_irq, | |
210 | dev); | |
211 | ||
c7a6c001 DH |
212 | err = usb_submit_urb(urb, GFP_ATOMIC); |
213 | if (err) | |
2179de60 MK |
214 | dev_dbg(&urb->dev->dev, |
215 | "%s: usb_submit_urb failed\n", __func__); | |
41b44e04 PH |
216 | |
217 | return err; | |
218 | } | |
219 | ||
41b44e04 | 220 | void as102_urb_stream_irq(struct urb *urb) |
41b44e04 PH |
221 | { |
222 | struct as102_dev_t *as102_dev = urb->context; | |
223 | ||
224 | if (urb->actual_length > 0) { | |
41b44e04 PH |
225 | dvb_dmx_swfilter(&as102_dev->dvb_dmx, |
226 | urb->transfer_buffer, | |
227 | urb->actual_length); | |
41b44e04 | 228 | } else { |
c7a6c001 | 229 | if (urb->actual_length == 0) |
41b44e04 PH |
230 | memset(urb->transfer_buffer, 0, AS102_USB_BUF_SIZE); |
231 | } | |
232 | ||
233 | /* is not stopped, re-submit urb */ | |
234 | if (as102_dev->streaming) | |
235 | as102_submit_urb_stream(as102_dev, urb); | |
236 | } | |
237 | ||
c7a6c001 DH |
238 | static void as102_free_usb_stream_buffer(struct as102_dev_t *dev) |
239 | { | |
41b44e04 PH |
240 | int i; |
241 | ||
41b44e04 PH |
242 | for (i = 0; i < MAX_STREAM_URB; i++) |
243 | usb_free_urb(dev->stream_urb[i]); | |
244 | ||
9d8e18b1 | 245 | usb_free_coherent(dev->bus_adap.usb_dev, |
41b44e04 PH |
246 | MAX_STREAM_URB * AS102_USB_BUF_SIZE, |
247 | dev->stream, | |
248 | dev->dma_addr); | |
41b44e04 PH |
249 | } |
250 | ||
c7a6c001 DH |
251 | static int as102_alloc_usb_stream_buffer(struct as102_dev_t *dev) |
252 | { | |
444f8bda | 253 | int i; |
41b44e04 | 254 | |
9d8e18b1 | 255 | dev->stream = usb_alloc_coherent(dev->bus_adap.usb_dev, |
41b44e04 PH |
256 | MAX_STREAM_URB * AS102_USB_BUF_SIZE, |
257 | GFP_KERNEL, | |
258 | &dev->dma_addr); | |
259 | if (!dev->stream) { | |
2179de60 MK |
260 | dev_dbg(&dev->bus_adap.usb_dev->dev, |
261 | "%s: usb_buffer_alloc failed\n", __func__); | |
41b44e04 PH |
262 | return -ENOMEM; |
263 | } | |
264 | ||
265 | memset(dev->stream, 0, MAX_STREAM_URB * AS102_USB_BUF_SIZE); | |
266 | ||
267 | /* init urb buffers */ | |
268 | for (i = 0; i < MAX_STREAM_URB; i++) { | |
269 | struct urb *urb; | |
270 | ||
c7a6c001 DH |
271 | urb = usb_alloc_urb(0, GFP_ATOMIC); |
272 | if (urb == NULL) { | |
41b44e04 PH |
273 | as102_free_usb_stream_buffer(dev); |
274 | return -ENOMEM; | |
275 | } | |
276 | ||
277 | urb->transfer_buffer = dev->stream + (i * AS102_USB_BUF_SIZE); | |
f8f7be01 GG |
278 | urb->transfer_dma = dev->dma_addr + (i * AS102_USB_BUF_SIZE); |
279 | urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; | |
41b44e04 PH |
280 | urb->transfer_buffer_length = AS102_USB_BUF_SIZE; |
281 | ||
282 | dev->stream_urb[i] = urb; | |
283 | } | |
444f8bda | 284 | return 0; |
41b44e04 PH |
285 | } |
286 | ||
c7a6c001 DH |
287 | static void as102_usb_stop_stream(struct as102_dev_t *dev) |
288 | { | |
41b44e04 PH |
289 | int i; |
290 | ||
291 | for (i = 0; i < MAX_STREAM_URB; i++) | |
292 | usb_kill_urb(dev->stream_urb[i]); | |
293 | } | |
294 | ||
c7a6c001 DH |
295 | static int as102_usb_start_stream(struct as102_dev_t *dev) |
296 | { | |
41b44e04 PH |
297 | int i, ret = 0; |
298 | ||
299 | for (i = 0; i < MAX_STREAM_URB; i++) { | |
c7a6c001 DH |
300 | ret = as102_submit_urb_stream(dev, dev->stream_urb[i]); |
301 | if (ret) { | |
41b44e04 PH |
302 | as102_usb_stop_stream(dev); |
303 | return ret; | |
304 | } | |
305 | } | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
c7a6c001 DH |
310 | static void as102_usb_release(struct kref *kref) |
311 | { | |
41b44e04 PH |
312 | struct as102_dev_t *as102_dev; |
313 | ||
41b44e04 PH |
314 | as102_dev = container_of(kref, struct as102_dev_t, kref); |
315 | if (as102_dev != NULL) { | |
316 | usb_put_dev(as102_dev->bus_adap.usb_dev); | |
317 | kfree(as102_dev); | |
318 | } | |
41b44e04 PH |
319 | } |
320 | ||
c7a6c001 DH |
321 | static void as102_usb_disconnect(struct usb_interface *intf) |
322 | { | |
41b44e04 PH |
323 | struct as102_dev_t *as102_dev; |
324 | ||
41b44e04 PH |
325 | /* extract as102_dev_t from usb_device private data */ |
326 | as102_dev = usb_get_intfdata(intf); | |
327 | ||
328 | /* unregister dvb layer */ | |
329 | as102_dvb_unregister(as102_dev); | |
330 | ||
331 | /* free usb buffers */ | |
332 | as102_free_usb_stream_buffer(as102_dev); | |
333 | ||
334 | usb_set_intfdata(intf, NULL); | |
335 | ||
336 | /* usb unregister device */ | |
337 | usb_deregister_dev(intf, &as102_usb_class_driver); | |
338 | ||
339 | /* decrement usage counter */ | |
340 | kref_put(&as102_dev->kref, as102_usb_release); | |
341 | ||
7d462fe5 | 342 | pr_info("%s: device has been disconnected\n", DRIVER_NAME); |
41b44e04 PH |
343 | } |
344 | ||
345 | static int as102_usb_probe(struct usb_interface *intf, | |
c7a6c001 DH |
346 | const struct usb_device_id *id) |
347 | { | |
41b44e04 PH |
348 | int ret; |
349 | struct as102_dev_t *as102_dev; | |
4f7b7c01 | 350 | int i; |
41b44e04 | 351 | |
4f7b7c01 | 352 | /* This should never actually happen */ |
b330f606 | 353 | if (ARRAY_SIZE(as102_usb_id_table) != |
4f7b7c01 | 354 | (sizeof(as102_device_names) / sizeof(const char *))) { |
7d462fe5 | 355 | pr_err("Device names table invalid size"); |
4f7b7c01 DH |
356 | return -EINVAL; |
357 | } | |
358 | ||
eabd0eaf | 359 | as102_dev = kzalloc(sizeof(struct as102_dev_t), GFP_KERNEL); |
535ec049 | 360 | if (as102_dev == NULL) |
eabd0eaf | 361 | return -ENOMEM; |
eabd0eaf | 362 | |
4f7b7c01 | 363 | /* Assign the user-friendly device name */ |
b330f606 | 364 | for (i = 0; i < ARRAY_SIZE(as102_usb_id_table); i++) { |
abfac0b6 | 365 | if (id == &as102_usb_id_table[i]) { |
4f7b7c01 | 366 | as102_dev->name = as102_device_names[i]; |
abfac0b6 GG |
367 | as102_dev->elna_cfg = as102_elna_cfg[i]; |
368 | } | |
4f7b7c01 DH |
369 | } |
370 | ||
371 | if (as102_dev->name == NULL) | |
372 | as102_dev->name = "Unknown AS102 device"; | |
373 | ||
41b44e04 PH |
374 | /* set private callback functions */ |
375 | as102_dev->bus_adap.ops = &as102_priv_ops; | |
376 | ||
377 | /* init cmd token for usb bus */ | |
378 | as102_dev->bus_adap.cmd = &as102_dev->bus_adap.token.usb.c; | |
379 | as102_dev->bus_adap.rsp = &as102_dev->bus_adap.token.usb.r; | |
380 | ||
381 | /* init kernel device reference */ | |
382 | kref_init(&as102_dev->kref); | |
383 | ||
384 | /* store as102 device to usb_device private data */ | |
385 | usb_set_intfdata(intf, (void *) as102_dev); | |
386 | ||
387 | /* store in as102 device the usb_device pointer */ | |
388 | as102_dev->bus_adap.usb_dev = usb_get_dev(interface_to_usbdev(intf)); | |
389 | ||
390 | /* we can register the device now, as it is ready */ | |
c7a6c001 DH |
391 | ret = usb_register_dev(intf, &as102_usb_class_driver); |
392 | if (ret < 0) { | |
41b44e04 | 393 | /* something prevented us from registering this driver */ |
8048926b GKH |
394 | dev_err(&intf->dev, |
395 | "%s: usb_register_dev() failed (errno = %d)\n", | |
396 | __func__, ret); | |
41b44e04 PH |
397 | goto failed; |
398 | } | |
399 | ||
7d462fe5 | 400 | pr_info("%s: device has been detected\n", DRIVER_NAME); |
41b44e04 PH |
401 | |
402 | /* request buffer allocation for streaming */ | |
c7a6c001 DH |
403 | ret = as102_alloc_usb_stream_buffer(as102_dev); |
404 | if (ret != 0) | |
cd19f7d3 | 405 | goto failed_stream; |
41b44e04 PH |
406 | |
407 | /* register dvb layer */ | |
408 | ret = as102_dvb_register(as102_dev); | |
cd19f7d3 AK |
409 | if (ret != 0) |
410 | goto failed_dvb; | |
41b44e04 | 411 | |
41b44e04 PH |
412 | return ret; |
413 | ||
cd19f7d3 AK |
414 | failed_dvb: |
415 | as102_free_usb_stream_buffer(as102_dev); | |
416 | failed_stream: | |
417 | usb_deregister_dev(intf, &as102_usb_class_driver); | |
41b44e04 | 418 | failed: |
cd19f7d3 | 419 | usb_put_dev(as102_dev->bus_adap.usb_dev); |
41b44e04 PH |
420 | usb_set_intfdata(intf, NULL); |
421 | kfree(as102_dev); | |
422 | return ret; | |
423 | } | |
424 | ||
c7a6c001 DH |
425 | static int as102_open(struct inode *inode, struct file *file) |
426 | { | |
41b44e04 PH |
427 | int ret = 0, minor = 0; |
428 | struct usb_interface *intf = NULL; | |
429 | struct as102_dev_t *dev = NULL; | |
430 | ||
41b44e04 PH |
431 | /* read minor from inode */ |
432 | minor = iminor(inode); | |
433 | ||
434 | /* fetch device from usb interface */ | |
c7a6c001 DH |
435 | intf = usb_find_interface(&as102_usb_driver, minor); |
436 | if (intf == NULL) { | |
7d462fe5 SN |
437 | pr_err("%s: can't find device for minor %d\n", |
438 | __func__, minor); | |
41b44e04 PH |
439 | ret = -ENODEV; |
440 | goto exit; | |
441 | } | |
442 | ||
443 | /* get our device */ | |
c7a6c001 DH |
444 | dev = usb_get_intfdata(intf); |
445 | if (dev == NULL) { | |
41b44e04 PH |
446 | ret = -EFAULT; |
447 | goto exit; | |
448 | } | |
449 | ||
450 | /* save our device object in the file's private structure */ | |
451 | file->private_data = dev; | |
452 | ||
453 | /* increment our usage count for the device */ | |
454 | kref_get(&dev->kref); | |
455 | ||
456 | exit: | |
41b44e04 PH |
457 | return ret; |
458 | } | |
459 | ||
c7a6c001 DH |
460 | static int as102_release(struct inode *inode, struct file *file) |
461 | { | |
41b44e04 PH |
462 | struct as102_dev_t *dev = NULL; |
463 | ||
c7a6c001 DH |
464 | dev = file->private_data; |
465 | if (dev != NULL) { | |
41b44e04 PH |
466 | /* decrement the count on our device */ |
467 | kref_put(&dev->kref, as102_usb_release); | |
468 | } | |
469 | ||
444f8bda | 470 | return 0; |
41b44e04 PH |
471 | } |
472 | ||
473 | MODULE_DEVICE_TABLE(usb, as102_usb_id_table); |