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5b3f03f0 HS |
1 | /* |
2 | * device driver for Telegent tlg2300 based TV cards | |
3 | * | |
4 | * Author : | |
5 | * Kang Yong <kangyong@telegent.com> | |
6 | * Zhang Xiaobing <xbzhang@telegent.com> | |
7 | * Huang Shijie <zyziii@telegent.com> or <shijie8@gmail.com> | |
8 | * | |
9 | * (c) 2009 Telegent Systems | |
10 | * (c) 2010 Telegent Systems | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
27 | #include <linux/version.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/kref.h> | |
34 | #include <linux/suspend.h> | |
35 | #include <linux/usb/quirks.h> | |
36 | #include <linux/ctype.h> | |
37 | #include <linux/string.h> | |
38 | #include <linux/types.h> | |
39 | #include <linux/firmware.h> | |
40 | #include <linux/smp_lock.h> | |
41 | ||
42 | #include "vendorcmds.h" | |
43 | #include "pd-common.h" | |
44 | ||
45 | #define VENDOR_ID 0x1B24 | |
46 | #define PRODUCT_ID 0x4001 | |
47 | static struct usb_device_id id_table[] = { | |
48 | { USB_DEVICE_AND_INTERFACE_INFO(VENDOR_ID, PRODUCT_ID, 255, 1, 0) }, | |
49 | { USB_DEVICE_AND_INTERFACE_INFO(VENDOR_ID, PRODUCT_ID, 255, 1, 1) }, | |
50 | { }, | |
51 | }; | |
52 | MODULE_DEVICE_TABLE(usb, id_table); | |
53 | ||
54 | int debug_mode; | |
55 | module_param(debug_mode, int, 0644); | |
56 | MODULE_PARM_DESC(debug_mode, "0 = disable, 1 = enable, 2 = verbose"); | |
57 | ||
58 | const char *firmware_name = "tlg2300_firmware.bin"; | |
59 | struct usb_driver poseidon_driver; | |
60 | static LIST_HEAD(pd_device_list); | |
61 | ||
62 | /* | |
63 | * send set request to USB firmware. | |
64 | */ | |
65 | s32 send_set_req(struct poseidon *pd, u8 cmdid, s32 param, s32 *cmd_status) | |
66 | { | |
67 | s32 ret; | |
68 | s8 data[32] = {}; | |
69 | u16 lower_16, upper_16; | |
70 | ||
71 | if (pd->state & POSEIDON_STATE_DISCONNECT) | |
72 | return -ENODEV; | |
73 | ||
74 | mdelay(30); | |
75 | ||
76 | if (param == 0) { | |
77 | upper_16 = lower_16 = 0; | |
78 | } else { | |
79 | /* send 32 bit param as two 16 bit param,little endian */ | |
80 | lower_16 = (unsigned short)(param & 0xffff); | |
81 | upper_16 = (unsigned short)((param >> 16) & 0xffff); | |
82 | } | |
83 | ret = usb_control_msg(pd->udev, | |
84 | usb_rcvctrlpipe(pd->udev, 0), | |
85 | REQ_SET_CMD | cmdid, | |
86 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
87 | lower_16, | |
88 | upper_16, | |
89 | &data, | |
90 | sizeof(*cmd_status), | |
91 | USB_CTRL_GET_TIMEOUT); | |
92 | ||
93 | if (!ret) { | |
94 | return -ENXIO; | |
95 | } else { | |
96 | /* 1st 4 bytes into cmd_status */ | |
97 | memcpy((char *)cmd_status, &(data[0]), sizeof(*cmd_status)); | |
98 | } | |
99 | return 0; | |
100 | } | |
101 | ||
102 | /* | |
103 | * send get request to Poseidon firmware. | |
104 | */ | |
105 | s32 send_get_req(struct poseidon *pd, u8 cmdid, s32 param, | |
106 | void *buf, s32 *cmd_status, s32 datalen) | |
107 | { | |
108 | s32 ret; | |
109 | s8 data[128] = {}; | |
110 | u16 lower_16, upper_16; | |
111 | ||
112 | if (pd->state & POSEIDON_STATE_DISCONNECT) | |
113 | return -ENODEV; | |
114 | ||
115 | mdelay(30); | |
116 | if (param == 0) { | |
117 | upper_16 = lower_16 = 0; | |
118 | } else { | |
119 | /*send 32 bit param as two 16 bit param, little endian */ | |
120 | lower_16 = (unsigned short)(param & 0xffff); | |
121 | upper_16 = (unsigned short)((param >> 16) & 0xffff); | |
122 | } | |
123 | ret = usb_control_msg(pd->udev, | |
124 | usb_rcvctrlpipe(pd->udev, 0), | |
125 | REQ_GET_CMD | cmdid, | |
126 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
127 | lower_16, | |
128 | upper_16, | |
129 | &data, | |
130 | (datalen + sizeof(*cmd_status)), | |
131 | USB_CTRL_GET_TIMEOUT); | |
132 | ||
133 | if (ret < 0) { | |
134 | return -ENXIO; | |
135 | } else { | |
136 | /* 1st 4 bytes into cmd_status, remaining data into cmd_data */ | |
137 | memcpy((char *)cmd_status, &data[0], sizeof(*cmd_status)); | |
138 | memcpy((char *)buf, &data[sizeof(*cmd_status)], datalen); | |
139 | } | |
140 | return 0; | |
141 | } | |
142 | ||
143 | static int pm_notifier_block(struct notifier_block *nb, | |
144 | unsigned long event, void *dummy) | |
145 | { | |
146 | struct poseidon *pd = NULL; | |
147 | struct list_head *node, *next; | |
148 | ||
149 | switch (event) { | |
150 | case PM_POST_HIBERNATION: | |
151 | list_for_each_safe(node, next, &pd_device_list) { | |
152 | struct usb_device *udev; | |
153 | struct usb_interface *iface; | |
154 | int rc = 0; | |
155 | ||
156 | pd = container_of(node, struct poseidon, device_list); | |
157 | udev = pd->udev; | |
158 | iface = pd->interface; | |
159 | ||
160 | /* It will cause the system to reload the firmware */ | |
161 | rc = usb_lock_device_for_reset(udev, iface); | |
162 | if (rc >= 0) { | |
163 | usb_reset_device(udev); | |
164 | usb_unlock_device(udev); | |
165 | } | |
166 | } | |
167 | break; | |
168 | default: | |
169 | break; | |
170 | } | |
171 | log("event :%ld\n", event); | |
172 | return 0; | |
173 | } | |
174 | ||
175 | static struct notifier_block pm_notifer = { | |
176 | .notifier_call = pm_notifier_block, | |
177 | }; | |
178 | ||
179 | int set_tuner_mode(struct poseidon *pd, unsigned char mode) | |
180 | { | |
181 | s32 ret, cmd_status; | |
182 | ||
183 | if (pd->state & POSEIDON_STATE_DISCONNECT) | |
184 | return -ENODEV; | |
185 | ||
186 | ret = send_set_req(pd, TUNE_MODE_SELECT, mode, &cmd_status); | |
187 | if (ret || cmd_status) | |
188 | return -ENXIO; | |
189 | return 0; | |
190 | } | |
191 | ||
5b3f03f0 HS |
192 | void poseidon_delete(struct kref *kref) |
193 | { | |
194 | struct poseidon *pd = container_of(kref, struct poseidon, kref); | |
195 | ||
196 | if (!pd) | |
197 | return; | |
198 | list_del_init(&pd->device_list); | |
199 | ||
200 | pd_dvb_usb_device_cleanup(pd); | |
201 | /* clean_audio_data(&pd->audio_data);*/ | |
202 | ||
203 | if (pd->udev) { | |
204 | usb_put_dev(pd->udev); | |
205 | pd->udev = NULL; | |
206 | } | |
207 | if (pd->interface) { | |
208 | usb_put_intf(pd->interface); | |
209 | pd->interface = NULL; | |
210 | } | |
211 | kfree(pd); | |
212 | log(); | |
213 | } | |
214 | ||
215 | static int firmware_download(struct usb_device *udev) | |
216 | { | |
217 | int ret = 0, actual_length; | |
218 | const struct firmware *fw = NULL; | |
219 | void *fwbuf = NULL; | |
220 | size_t fwlength = 0, offset; | |
221 | size_t max_packet_size; | |
222 | ||
223 | ret = request_firmware(&fw, firmware_name, &udev->dev); | |
224 | if (ret) { | |
225 | log("download err : %d", ret); | |
226 | return ret; | |
227 | } | |
228 | ||
229 | fwlength = fw->size; | |
230 | ||
231 | fwbuf = kzalloc(fwlength, GFP_KERNEL); | |
232 | if (!fwbuf) { | |
233 | ret = -ENOMEM; | |
234 | goto out; | |
235 | } | |
236 | memcpy(fwbuf, fw->data, fwlength); | |
237 | ||
238 | max_packet_size = udev->ep_out[0x1]->desc.wMaxPacketSize; | |
239 | log("\t\t download size : %d", (int)max_packet_size); | |
240 | ||
241 | for (offset = 0; offset < fwlength; offset += max_packet_size) { | |
242 | actual_length = 0; | |
243 | ret = usb_bulk_msg(udev, | |
244 | usb_sndbulkpipe(udev, 0x01), /* ep 1 */ | |
245 | fwbuf + offset, | |
246 | min(max_packet_size, fwlength - offset), | |
247 | &actual_length, | |
248 | HZ * 10); | |
249 | if (ret) | |
250 | break; | |
251 | } | |
252 | kfree(fwbuf); | |
253 | out: | |
254 | release_firmware(fw); | |
255 | return ret; | |
256 | } | |
257 | ||
08cf8a57 RD |
258 | static inline struct poseidon *get_pd(struct usb_interface *intf) |
259 | { | |
260 | return usb_get_intfdata(intf); | |
261 | } | |
262 | ||
5b3f03f0 HS |
263 | #ifdef CONFIG_PM |
264 | /* one-to-one map : poseidon{} <----> usb_device{}'s port */ | |
265 | static inline void set_map_flags(struct poseidon *pd, struct usb_device *udev) | |
266 | { | |
267 | pd->portnum = udev->portnum; | |
268 | } | |
269 | ||
270 | static inline int get_autopm_ref(struct poseidon *pd) | |
271 | { | |
272 | return pd->video_data.users + pd->vbi_data.users + pd->audio.users | |
273 | + atomic_read(&pd->dvb_data.users) + pd->radio_data.users; | |
274 | } | |
275 | ||
276 | /* fixup something for poseidon */ | |
277 | static inline struct poseidon *fixup(struct poseidon *pd) | |
278 | { | |
279 | int count; | |
280 | ||
281 | /* old udev and interface have gone, so put back reference . */ | |
282 | count = get_autopm_ref(pd); | |
283 | log("count : %d, ref count : %d", count, get_pm_count(pd)); | |
284 | while (count--) | |
285 | usb_autopm_put_interface(pd->interface); | |
286 | /*usb_autopm_set_interface(pd->interface); */ | |
287 | ||
288 | usb_put_dev(pd->udev); | |
289 | usb_put_intf(pd->interface); | |
290 | log("event : %d\n", pd->msg.event); | |
291 | return pd; | |
292 | } | |
293 | ||
294 | static struct poseidon *find_old_poseidon(struct usb_device *udev) | |
295 | { | |
296 | struct poseidon *pd; | |
297 | ||
298 | list_for_each_entry(pd, &pd_device_list, device_list) { | |
299 | if (pd->portnum == udev->portnum && in_hibernation(pd)) | |
300 | return fixup(pd); | |
301 | } | |
302 | return NULL; | |
303 | } | |
304 | ||
305 | /* Is the card working now ? */ | |
306 | static inline int is_working(struct poseidon *pd) | |
307 | { | |
308 | return get_pm_count(pd) > 0; | |
309 | } | |
310 | ||
5b3f03f0 HS |
311 | static int poseidon_suspend(struct usb_interface *intf, pm_message_t msg) |
312 | { | |
313 | struct poseidon *pd = get_pd(intf); | |
314 | ||
315 | if (!pd) | |
316 | return 0; | |
317 | if (!is_working(pd)) { | |
318 | if (get_pm_count(pd) <= 0 && !in_hibernation(pd)) { | |
319 | pd->msg.event = PM_EVENT_AUTO_SUSPEND; | |
320 | pd->pm_resume = NULL; /* a good guard */ | |
321 | printk(KERN_DEBUG "\n\t+ TLG2300 auto suspend +\n\n"); | |
322 | } | |
323 | return 0; | |
324 | } | |
325 | pd->msg = msg; /* save it here */ | |
326 | logpm(pd); | |
327 | return pd->pm_suspend ? pd->pm_suspend(pd) : 0; | |
328 | } | |
329 | ||
330 | static int poseidon_resume(struct usb_interface *intf) | |
331 | { | |
332 | struct poseidon *pd = get_pd(intf); | |
333 | ||
334 | if (!pd) | |
335 | return 0; | |
336 | printk(KERN_DEBUG "\n\t ++ TLG2300 resume ++\n\n"); | |
337 | ||
338 | if (!is_working(pd)) { | |
339 | if (PM_EVENT_AUTO_SUSPEND == pd->msg.event) | |
340 | pd->msg = PMSG_ON; | |
341 | return 0; | |
342 | } | |
343 | if (in_hibernation(pd)) { | |
344 | logpm(pd); | |
345 | return 0; | |
346 | } | |
347 | logpm(pd); | |
348 | return pd->pm_resume ? pd->pm_resume(pd) : 0; | |
349 | } | |
350 | ||
351 | static void hibernation_resume(struct work_struct *w) | |
352 | { | |
353 | struct poseidon *pd = container_of(w, struct poseidon, pm_work); | |
354 | int count; | |
355 | ||
356 | pd->msg.event = 0; /* clear it here */ | |
357 | pd->state &= ~POSEIDON_STATE_DISCONNECT; | |
358 | ||
359 | /* set the new interface's reference */ | |
360 | count = get_autopm_ref(pd); | |
361 | while (count--) | |
362 | usb_autopm_get_interface(pd->interface); | |
363 | ||
364 | /* resume the context */ | |
365 | logpm(pd); | |
366 | if (pd->pm_resume) | |
367 | pd->pm_resume(pd); | |
368 | } | |
08cf8a57 RD |
369 | #else /* CONFIG_PM is not enabled: */ |
370 | static inline struct poseidon *find_old_poseidon(struct usb_device *udev) | |
371 | { | |
372 | return NULL; | |
373 | } | |
374 | ||
375 | static inline void set_map_flags(struct poseidon *pd, struct usb_device *udev) | |
376 | { | |
377 | } | |
5b3f03f0 HS |
378 | #endif |
379 | ||
380 | static bool check_firmware(struct usb_device *udev, int *down_firmware) | |
381 | { | |
382 | void *buf; | |
383 | int ret; | |
384 | struct cmd_firmware_vers_s *cmd_firm; | |
385 | ||
386 | buf = kzalloc(sizeof(*cmd_firm) + sizeof(u32), GFP_KERNEL); | |
387 | if (!buf) | |
388 | return -ENOMEM; | |
389 | ret = usb_control_msg(udev, | |
390 | usb_rcvctrlpipe(udev, 0), | |
391 | REQ_GET_CMD | GET_FW_ID, | |
392 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
393 | 0, | |
394 | 0, | |
395 | buf, | |
396 | sizeof(*cmd_firm) + sizeof(u32), | |
397 | USB_CTRL_GET_TIMEOUT); | |
398 | kfree(buf); | |
399 | ||
400 | if (ret < 0) { | |
401 | *down_firmware = 1; | |
402 | return firmware_download(udev); | |
403 | } | |
404 | return ret; | |
405 | } | |
406 | ||
407 | static int poseidon_probe(struct usb_interface *interface, | |
408 | const struct usb_device_id *id) | |
409 | { | |
410 | struct usb_device *udev = interface_to_usbdev(interface); | |
411 | struct poseidon *pd = NULL; | |
412 | int ret = 0; | |
413 | int new_one = 0; | |
414 | ||
415 | /* download firmware */ | |
416 | check_firmware(udev, &ret); | |
417 | if (ret) | |
418 | return 0; | |
419 | ||
420 | /* Do I recovery from the hibernate ? */ | |
421 | pd = find_old_poseidon(udev); | |
422 | if (!pd) { | |
423 | pd = kzalloc(sizeof(*pd), GFP_KERNEL); | |
424 | if (!pd) | |
425 | return -ENOMEM; | |
426 | kref_init(&pd->kref); | |
427 | set_map_flags(pd, udev); | |
428 | new_one = 1; | |
429 | } | |
430 | ||
431 | pd->udev = usb_get_dev(udev); | |
432 | pd->interface = usb_get_intf(interface); | |
433 | usb_set_intfdata(interface, pd); | |
434 | ||
435 | if (new_one) { | |
436 | struct device *dev = &interface->dev; | |
437 | ||
438 | logpm(pd); | |
5b3f03f0 HS |
439 | mutex_init(&pd->lock); |
440 | ||
441 | /* register v4l2 device */ | |
442 | snprintf(pd->v4l2_dev.name, sizeof(pd->v4l2_dev.name), "%s %s", | |
443 | dev->driver->name, dev_name(dev)); | |
444 | ret = v4l2_device_register(NULL, &pd->v4l2_dev); | |
445 | ||
446 | /* register devices in directory /dev */ | |
447 | ret = pd_video_init(pd); | |
448 | poseidon_audio_init(pd); | |
449 | poseidon_fm_init(pd); | |
450 | pd_dvb_usb_device_init(pd); | |
451 | ||
452 | INIT_LIST_HEAD(&pd->device_list); | |
453 | list_add_tail(&pd->device_list, &pd_device_list); | |
454 | } | |
455 | ||
456 | device_init_wakeup(&udev->dev, 1); | |
457 | #ifdef CONFIG_PM | |
458 | pd->udev->autosuspend_disabled = 0; | |
459 | pd->udev->autosuspend_delay = HZ * PM_SUSPEND_DELAY; | |
460 | ||
461 | if (in_hibernation(pd)) { | |
462 | INIT_WORK(&pd->pm_work, hibernation_resume); | |
463 | schedule_work(&pd->pm_work); | |
464 | } | |
465 | #endif | |
466 | return 0; | |
467 | } | |
468 | ||
469 | static void poseidon_disconnect(struct usb_interface *interface) | |
470 | { | |
471 | struct poseidon *pd = get_pd(interface); | |
472 | ||
473 | if (!pd) | |
474 | return; | |
475 | logpm(pd); | |
476 | if (in_hibernation(pd)) | |
477 | return; | |
478 | ||
479 | mutex_lock(&pd->lock); | |
480 | pd->state |= POSEIDON_STATE_DISCONNECT; | |
481 | mutex_unlock(&pd->lock); | |
482 | ||
483 | /* stop urb transferring */ | |
484 | stop_all_video_stream(pd); | |
485 | dvb_stop_streaming(&pd->dvb_data); | |
486 | ||
487 | /*unregister v4l2 device */ | |
488 | v4l2_device_unregister(&pd->v4l2_dev); | |
489 | ||
490 | lock_kernel(); | |
491 | { | |
492 | pd_dvb_usb_device_exit(pd); | |
493 | poseidon_fm_exit(pd); | |
494 | ||
495 | poseidon_audio_free(pd); | |
496 | pd_video_exit(pd); | |
497 | } | |
498 | unlock_kernel(); | |
499 | ||
500 | usb_set_intfdata(interface, NULL); | |
501 | kref_put(&pd->kref, poseidon_delete); | |
502 | } | |
503 | ||
504 | struct usb_driver poseidon_driver = { | |
505 | .name = "poseidon", | |
506 | .probe = poseidon_probe, | |
507 | .disconnect = poseidon_disconnect, | |
508 | .id_table = id_table, | |
509 | #ifdef CONFIG_PM | |
510 | .suspend = poseidon_suspend, | |
511 | .resume = poseidon_resume, | |
512 | #endif | |
513 | .supports_autosuspend = 1, | |
514 | }; | |
515 | ||
516 | static int __init poseidon_init(void) | |
517 | { | |
518 | int ret; | |
519 | ||
520 | ret = usb_register(&poseidon_driver); | |
521 | if (ret) | |
522 | return ret; | |
523 | register_pm_notifier(&pm_notifer); | |
524 | return ret; | |
525 | } | |
526 | ||
527 | static void __exit poseidon_exit(void) | |
528 | { | |
529 | log(); | |
530 | unregister_pm_notifier(&pm_notifer); | |
531 | usb_deregister(&poseidon_driver); | |
532 | } | |
533 | ||
534 | module_init(poseidon_init); | |
535 | module_exit(poseidon_exit); | |
536 | ||
537 | MODULE_AUTHOR("Telegent Systems"); | |
538 | MODULE_DESCRIPTION("For tlg2300-based USB device "); | |
539 | MODULE_LICENSE("GPL"); |