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V4L/DVB: IR/imon: protect ictx's kc and last_keycode w/spinlock
[net-next-2.6.git] / drivers / media / IR / imon.c
CommitLineData
21677cfc
JW		 1/*
2 * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD
3 *
693508df 4 * Copyright(C) 2010 Jarod Wilson <jarod@wilsonet.com>
21677cfc
JW		 5 * Portions based on the original lirc_imon driver,
6 * Copyright(C) 2004 Venky Raju(dev@venky.ws)
7 *
8 * Huge thanks to R. Geoff Newbury for invaluable debugging on the
9 * 0xffdc iMON devices, and for sending me one to hack on, without
10 * which the support for them wouldn't be nearly as good. Thanks
11 * also to the numerous 0xffdc device owners that tested auto-config
12 * support for me and provided debug dumps from their devices.
13 *
14 * imon is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/errno.h>
30#include <linux/init.h>
31#include <linux/kernel.h>
32#include <linux/module.h>
33#include <linux/slab.h>
34#include <linux/uaccess.h>
35
36#include <linux/input.h>
37#include <linux/usb.h>
38#include <linux/usb/input.h>
39#include <media/ir-core.h>
40
41#include <linux/time.h>
42#include <linux/timer.h>
43
44#define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
45#define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display"
46#define MOD_NAME "imon"
eaf2bcc9 47#define MOD_VERSION "0.9.2"
21677cfc
JW		 48
49#define DISPLAY_MINOR_BASE 144
50#define DEVICE_NAME "lcd%d"
51
52#define BUF_CHUNK_SIZE 8
53#define BUF_SIZE 128
54
55#define BIT_DURATION 250 /* each bit received is 250us */
56
57#define IMON_CLOCK_ENABLE_PACKETS 2
21677cfc
JW		 58
59/*** P R O T O T Y P E S ***/
60
61/* USB Callback prototypes */
62static int imon_probe(struct usb_interface *interface,
63 const struct usb_device_id *id);
64static void imon_disconnect(struct usb_interface *interface);
65static void usb_rx_callback_intf0(struct urb *urb);
66static void usb_rx_callback_intf1(struct urb *urb);
67static void usb_tx_callback(struct urb *urb);
68
69/* suspend/resume support */
70static int imon_resume(struct usb_interface *intf);
71static int imon_suspend(struct usb_interface *intf, pm_message_t message);
72
73/* Display file_operations function prototypes */
74static int display_open(struct inode *inode, struct file *file);
75static int display_close(struct inode *inode, struct file *file);
76
77/* VFD write operation */
78static ssize_t vfd_write(struct file *file, const char *buf,
79 size_t n_bytes, loff_t *pos);
80
81/* LCD file_operations override function prototypes */
82static ssize_t lcd_write(struct file *file, const char *buf,
83 size_t n_bytes, loff_t *pos);
84
85/*** G L O B A L S ***/
86
87struct imon_context {
88 struct device *dev;
89 struct ir_dev_props *props;
21677cfc
JW		 90 /* Newer devices have two interfaces */
91 struct usb_device *usbdev_intf0;
92 struct usb_device *usbdev_intf1;
93
94 bool display_supported; /* not all controllers do */
95 bool display_isopen; /* display port has been opened */
bbe4690f 96 bool rf_device; /* true if iMON 2.4G LT/DT RF device */
21677cfc
JW		 97 bool rf_isassociating; /* RF remote associating */
98 bool dev_present_intf0; /* USB device presence, interface 0 */
99 bool dev_present_intf1; /* USB device presence, interface 1 */
100
101 struct mutex lock; /* to lock this object */
102 wait_queue_head_t remove_ok; /* For unexpected USB disconnects */
103
104 struct usb_endpoint_descriptor *rx_endpoint_intf0;
105 struct usb_endpoint_descriptor *rx_endpoint_intf1;
106 struct usb_endpoint_descriptor *tx_endpoint;
107 struct urb *rx_urb_intf0;
108 struct urb *rx_urb_intf1;
109 struct urb *tx_urb;
110 bool tx_control;
111 unsigned char usb_rx_buf[8];
112 unsigned char usb_tx_buf[8];
113
114 struct tx_t {
115 unsigned char data_buf[35]; /* user data buffer */
116 struct completion finished; /* wait for write to finish */
117 bool busy; /* write in progress */
118 int status; /* status of tx completion */
119 } tx;
120
121 u16 vendor; /* usb vendor ID */
122 u16 product; /* usb product ID */
123
eaf2bcc9
DH		 124 struct input_dev *rdev; /* input device for remote */
125 struct input_dev *idev; /* input device for panel & IR mouse */
21677cfc
JW		 126 struct input_dev *touch; /* input device for touchscreen */
127
693508df 128 spinlock_t kc_lock; /* make sure we get keycodes right */
21677cfc
JW		 129 u32 kc; /* current input keycode */
130 u32 last_keycode; /* last reported input keycode */
eaf2bcc9
DH		 131 u32 rc_scancode; /* the computed remote scancode */
132 u8 rc_toggle; /* the computed remote toggle bit */
6718e8ad 133 u64 ir_type; /* iMON or MCE (RC6) IR protocol? */
21677cfc
JW		 134 bool release_code; /* some keys send a release code */
135
136 u8 display_type; /* store the display type */
137 bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */
138
eaf2bcc9
DH		 139 char name_rdev[128]; /* rc input device name */
140 char phys_rdev[64]; /* rc input device phys path */
141
21677cfc
JW		 142 char name_idev[128]; /* input device name */
143 char phys_idev[64]; /* input device phys path */
21677cfc
JW		 144
145 char name_touch[128]; /* touch screen name */
146 char phys_touch[64]; /* touch screen phys path */
147 struct timer_list ttimer; /* touch screen timer */
148 int touch_x; /* x coordinate on touchscreen */
149 int touch_y; /* y coordinate on touchscreen */
150};
151
152#define TOUCH_TIMEOUT (HZ/30)
21677cfc
JW		 153
154/* vfd character device file operations */
155static const struct file_operations vfd_fops = {
156 .owner = THIS_MODULE,
157 .open = &display_open,
158 .write = &vfd_write,
159 .release = &display_close
160};
161
162/* lcd character device file operations */
163static const struct file_operations lcd_fops = {
164 .owner = THIS_MODULE,
165 .open = &display_open,
166 .write = &lcd_write,
167 .release = &display_close
168};
169
170enum {
171 IMON_DISPLAY_TYPE_AUTO = 0,
172 IMON_DISPLAY_TYPE_VFD = 1,
173 IMON_DISPLAY_TYPE_LCD = 2,
174 IMON_DISPLAY_TYPE_VGA = 3,
175 IMON_DISPLAY_TYPE_NONE = 4,
176};
177
21677cfc
JW		 178enum {
179 IMON_KEY_IMON = 0,
180 IMON_KEY_MCE = 1,
181 IMON_KEY_PANEL = 2,
182};
183
184/*
185 * USB Device ID for iMON USB Control Boards
186 *
187 * The Windows drivers contain 6 different inf files, more or less one for
188 * each new device until the 0x0034-0x0046 devices, which all use the same
189 * driver. Some of the devices in the 34-46 range haven't been definitively
190 * identified yet. Early devices have either a TriGem Computer, Inc. or a
191 * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later
192 * devices use the SoundGraph vendor ID (0x15c2). This driver only supports
193 * the ffdc and later devices, which do onboard decoding.
194 */
195static struct usb_device_id imon_usb_id_table[] = {
196 /*
197 * Several devices with this same device ID, all use iMON_PAD.inf
198 * SoundGraph iMON PAD (IR & VFD)
199 * SoundGraph iMON PAD (IR & LCD)
200 * SoundGraph iMON Knob (IR only)
201 */
202 { USB_DEVICE(0x15c2, 0xffdc) },
203
204 /*
205 * Newer devices, all driven by the latest iMON Windows driver, full
206 * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2'
207 * Need user input to fill in details on unknown devices.
208 */
209 /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */
210 { USB_DEVICE(0x15c2, 0x0034) },
211 /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */
212 { USB_DEVICE(0x15c2, 0x0035) },
213 /* SoundGraph iMON OEM VFD (IR & VFD) */
214 { USB_DEVICE(0x15c2, 0x0036) },
215 /* device specifics unknown */
216 { USB_DEVICE(0x15c2, 0x0037) },
217 /* SoundGraph iMON OEM LCD (IR & LCD) */
218 { USB_DEVICE(0x15c2, 0x0038) },
219 /* SoundGraph iMON UltraBay (IR & LCD) */
220 { USB_DEVICE(0x15c2, 0x0039) },
221 /* device specifics unknown */
222 { USB_DEVICE(0x15c2, 0x003a) },
223 /* device specifics unknown */
224 { USB_DEVICE(0x15c2, 0x003b) },
225 /* SoundGraph iMON OEM Inside (IR only) */
226 { USB_DEVICE(0x15c2, 0x003c) },
227 /* device specifics unknown */
228 { USB_DEVICE(0x15c2, 0x003d) },
229 /* device specifics unknown */
230 { USB_DEVICE(0x15c2, 0x003e) },
231 /* device specifics unknown */
232 { USB_DEVICE(0x15c2, 0x003f) },
233 /* device specifics unknown */
234 { USB_DEVICE(0x15c2, 0x0040) },
235 /* SoundGraph iMON MINI (IR only) */
236 { USB_DEVICE(0x15c2, 0x0041) },
237 /* Antec Veris Multimedia Station EZ External (IR only) */
238 { USB_DEVICE(0x15c2, 0x0042) },
239 /* Antec Veris Multimedia Station Basic Internal (IR only) */
240 { USB_DEVICE(0x15c2, 0x0043) },
241 /* Antec Veris Multimedia Station Elite (IR & VFD) */
242 { USB_DEVICE(0x15c2, 0x0044) },
243 /* Antec Veris Multimedia Station Premiere (IR & LCD) */
244 { USB_DEVICE(0x15c2, 0x0045) },
245 /* device specifics unknown */
246 { USB_DEVICE(0x15c2, 0x0046) },
247 {}
248};
249
250/* USB Device data */
251static struct usb_driver imon_driver = {
252 .name = MOD_NAME,
253 .probe = imon_probe,
254 .disconnect = imon_disconnect,
255 .suspend = imon_suspend,
256 .resume = imon_resume,
257 .id_table = imon_usb_id_table,
258};
259
260static struct usb_class_driver imon_vfd_class = {
261 .name = DEVICE_NAME,
262 .fops = &vfd_fops,
263 .minor_base = DISPLAY_MINOR_BASE,
264};
265
266static struct usb_class_driver imon_lcd_class = {
267 .name = DEVICE_NAME,
268 .fops = &lcd_fops,
269 .minor_base = DISPLAY_MINOR_BASE,
270};
271
272/* imon receiver front panel/knob key table */
273static const struct {
274 u64 hw_code;
275 u32 keycode;
276} imon_panel_key_table[] = {
1f71baef
MCC		 277 { 0x000000000f00ffeell, KEY_PROG1 }, /* Go */
278 { 0x000000001f00ffeell, KEY_AUDIO },
279 { 0x000000002000ffeell, KEY_VIDEO },
280 { 0x000000002100ffeell, KEY_CAMERA },
281 { 0x000000002700ffeell, KEY_DVD },
282 { 0x000000002300ffeell, KEY_TV },
283 { 0x000000000500ffeell, KEY_PREVIOUS },
284 { 0x000000000700ffeell, KEY_REWIND },
285 { 0x000000000400ffeell, KEY_STOP },
286 { 0x000000003c00ffeell, KEY_PLAYPAUSE },
287 { 0x000000000800ffeell, KEY_FASTFORWARD },
288 { 0x000000000600ffeell, KEY_NEXT },
289 { 0x000000010000ffeell, KEY_RIGHT },
290 { 0x000001000000ffeell, KEY_LEFT },
291 { 0x000000003d00ffeell, KEY_SELECT },
292 { 0x000100000000ffeell, KEY_VOLUMEUP },
293 { 0x010000000000ffeell, KEY_VOLUMEDOWN },
294 { 0x000000000100ffeell, KEY_MUTE },
21677cfc 295 /* iMON Knob values */
1f71baef
MCC		 296 { 0x000100ffffffffeell, KEY_VOLUMEUP },
297 { 0x010000ffffffffeell, KEY_VOLUMEDOWN },
298 { 0x000008ffffffffeell, KEY_MUTE },
21677cfc
JW		 299};
300
301/* to prevent races between open() and disconnect(), probing, etc */
302static DEFINE_MUTEX(driver_lock);
303
304/* Module bookkeeping bits */
305MODULE_AUTHOR(MOD_AUTHOR);
306MODULE_DESCRIPTION(MOD_DESC);
307MODULE_VERSION(MOD_VERSION);
308MODULE_LICENSE("GPL");
309MODULE_DEVICE_TABLE(usb, imon_usb_id_table);
310
311static bool debug;
312module_param(debug, bool, S_IRUGO | S_IWUSR);
313MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes(default: no)");
314
315/* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */
316static int display_type;
317module_param(display_type, int, S_IRUGO);
318MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, "
319 "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)");
320
6718e8ad
JW		 321static int pad_stabilize = 1;
322module_param(pad_stabilize, int, S_IRUGO | S_IWUSR);
323MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD "
324 "presses in arrow key mode. 0=disable, 1=enable (default).");
21677cfc
JW		 325
326/*
327 * In certain use cases, mouse mode isn't really helpful, and could actually
328 * cause confusion, so allow disabling it when the IR device is open.
329 */
330static bool nomouse;
331module_param(nomouse, bool, S_IRUGO | S_IWUSR);
332MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is "
333 "open. 0=don't disable, 1=disable. (default: don't disable)");
334
335/* threshold at which a pad push registers as an arrow key in kbd mode */
336static int pad_thresh;
337module_param(pad_thresh, int, S_IRUGO | S_IWUSR);
338MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an "
339 "arrow key in kbd mode (default: 28)");
340
341
342static void free_imon_context(struct imon_context *ictx)
343{
344 struct device *dev = ictx->dev;
345
346 usb_free_urb(ictx->tx_urb);
347 usb_free_urb(ictx->rx_urb_intf0);
348 usb_free_urb(ictx->rx_urb_intf1);
349 kfree(ictx);
350
351 dev_dbg(dev, "%s: iMON context freed\n", __func__);
352}
353
354/**
355 * Called when the Display device (e.g. /dev/lcd0)
356 * is opened by the application.
357 */
358static int display_open(struct inode *inode, struct file *file)
359{
360 struct usb_interface *interface;
361 struct imon_context *ictx = NULL;
362 int subminor;
363 int retval = 0;
364
365 /* prevent races with disconnect */
366 mutex_lock(&driver_lock);
367
368 subminor = iminor(inode);
369 interface = usb_find_interface(&imon_driver, subminor);
370 if (!interface) {
371 err("%s: could not find interface for minor %d",
372 __func__, subminor);
373 retval = -ENODEV;
374 goto exit;
375 }
376 ictx = usb_get_intfdata(interface);
377
378 if (!ictx) {
379 err("%s: no context found for minor %d", __func__, subminor);
380 retval = -ENODEV;
381 goto exit;
382 }
383
384 mutex_lock(&ictx->lock);
385
386 if (!ictx->display_supported) {
387 err("%s: display not supported by device", __func__);
388 retval = -ENODEV;
389 } else if (ictx->display_isopen) {
390 err("%s: display port is already open", __func__);
391 retval = -EBUSY;
392 } else {
f789bf40 393 ictx->display_isopen = true;
21677cfc
JW		 394 file->private_data = ictx;
395 dev_dbg(ictx->dev, "display port opened\n");
396 }
397
398 mutex_unlock(&ictx->lock);
399
400exit:
401 mutex_unlock(&driver_lock);
402 return retval;
403}
404
405/**
406 * Called when the display device (e.g. /dev/lcd0)
407 * is closed by the application.
408 */
409static int display_close(struct inode *inode, struct file *file)
410{
411 struct imon_context *ictx = NULL;
412 int retval = 0;
413
abf84383 414 ictx = file->private_data;
21677cfc
JW		 415
416 if (!ictx) {
417 err("%s: no context for device", __func__);
418 return -ENODEV;
419 }
420
421 mutex_lock(&ictx->lock);
422
423 if (!ictx->display_supported) {
424 err("%s: display not supported by device", __func__);
425 retval = -ENODEV;
426 } else if (!ictx->display_isopen) {
427 err("%s: display is not open", __func__);
428 retval = -EIO;
429 } else {
f789bf40 430 ictx->display_isopen = false;
21677cfc
JW		 431 dev_dbg(ictx->dev, "display port closed\n");
432 if (!ictx->dev_present_intf0) {
433 /*
434 * Device disconnected before close and IR port is not
435 * open. If IR port is open, context will be deleted by
436 * ir_close.
437 */
438 mutex_unlock(&ictx->lock);
439 free_imon_context(ictx);
440 return retval;
441 }
442 }
443
444 mutex_unlock(&ictx->lock);
445 return retval;
446}
447
448/**
449 * Sends a packet to the device -- this function must be called
450 * with ictx->lock held.
451 */
452static int send_packet(struct imon_context *ictx)
453{
454 unsigned int pipe;
455 unsigned long timeout;
456 int interval = 0;
457 int retval = 0;
458 struct usb_ctrlrequest *control_req = NULL;
459
460 /* Check if we need to use control or interrupt urb */
461 if (!ictx->tx_control) {
462 pipe = usb_sndintpipe(ictx->usbdev_intf0,
463 ictx->tx_endpoint->bEndpointAddress);
464 interval = ictx->tx_endpoint->bInterval;
465
466 usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe,
467 ictx->usb_tx_buf,
468 sizeof(ictx->usb_tx_buf),
469 usb_tx_callback, ictx, interval);
470
471 ictx->tx_urb->actual_length = 0;
472 } else {
473 /* fill request into kmalloc'ed space: */
474 control_req = kmalloc(sizeof(struct usb_ctrlrequest),
475 GFP_KERNEL);
476 if (control_req == NULL)
477 return -ENOMEM;
478
479 /* setup packet is '21 09 0200 0001 0008' */
480 control_req->bRequestType = 0x21;
481 control_req->bRequest = 0x09;
482 control_req->wValue = cpu_to_le16(0x0200);
483 control_req->wIndex = cpu_to_le16(0x0001);
484 control_req->wLength = cpu_to_le16(0x0008);
485
486 /* control pipe is endpoint 0x00 */
487 pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0);
488
489 /* build the control urb */
490 usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0,
491 pipe, (unsigned char *)control_req,
492 ictx->usb_tx_buf,
493 sizeof(ictx->usb_tx_buf),
494 usb_tx_callback, ictx);
495 ictx->tx_urb->actual_length = 0;
496 }
497
498 init_completion(&ictx->tx.finished);
f789bf40 499 ictx->tx.busy = true;
21677cfc
JW		 500 smp_rmb(); /* ensure later readers know we're busy */
501
502 retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL);
503 if (retval) {
f789bf40 504 ictx->tx.busy = false;
21677cfc
JW		 505 smp_rmb(); /* ensure later readers know we're not busy */
506 err("%s: error submitting urb(%d)", __func__, retval);
507 } else {
508 /* Wait for transmission to complete (or abort) */
509 mutex_unlock(&ictx->lock);
510 retval = wait_for_completion_interruptible(
511 &ictx->tx.finished);
512 if (retval)
513 err("%s: task interrupted", __func__);
514 mutex_lock(&ictx->lock);
515
516 retval = ictx->tx.status;
517 if (retval)
518 err("%s: packet tx failed (%d)", __func__, retval);
519 }
520
521 kfree(control_req);
522
523 /*
524 * Induce a mandatory 5ms delay before returning, as otherwise,
525 * send_packet can get called so rapidly as to overwhelm the device,
526 * particularly on faster systems and/or those with quirky usb.
527 */
528 timeout = msecs_to_jiffies(5);
529 set_current_state(TASK_UNINTERRUPTIBLE);
530 schedule_timeout(timeout);
531
532 return retval;
533}
534
535/**
536 * Sends an associate packet to the iMON 2.4G.
537 *
538 * This might not be such a good idea, since it has an id collision with
539 * some versions of the "IR & VFD" combo. The only way to determine if it
540 * is an RF version is to look at the product description string. (Which
541 * we currently do not fetch).
542 */
543static int send_associate_24g(struct imon_context *ictx)
544{
545 int retval;
546 const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00,
547 0x00, 0x00, 0x00, 0x20 };
548
549 if (!ictx) {
550 err("%s: no context for device", __func__);
551 return -ENODEV;
552 }
553
554 if (!ictx->dev_present_intf0) {
555 err("%s: no iMON device present", __func__);
556 return -ENODEV;
557 }
558
559 memcpy(ictx->usb_tx_buf, packet, sizeof(packet));
560 retval = send_packet(ictx);
561
562 return retval;
563}
564
565/**
566 * Sends packets to setup and show clock on iMON display
567 *
568 * Arguments: year - last 2 digits of year, month - 1..12,
569 * day - 1..31, dow - day of the week (0-Sun...6-Sat),
570 * hour - 0..23, minute - 0..59, second - 0..59
571 */
572static int send_set_imon_clock(struct imon_context *ictx,
573 unsigned int year, unsigned int month,
574 unsigned int day, unsigned int dow,
575 unsigned int hour, unsigned int minute,
576 unsigned int second)
577{
578 unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8];
579 int retval = 0;
580 int i;
581
582 if (!ictx) {
583 err("%s: no context for device", __func__);
584 return -ENODEV;
585 }
586
587 switch (ictx->display_type) {
588 case IMON_DISPLAY_TYPE_LCD:
589 clock_enable_pkt[0][0] = 0x80;
590 clock_enable_pkt[0][1] = year;
591 clock_enable_pkt[0][2] = month-1;
592 clock_enable_pkt[0][3] = day;
593 clock_enable_pkt[0][4] = hour;
594 clock_enable_pkt[0][5] = minute;
595 clock_enable_pkt[0][6] = second;
596
597 clock_enable_pkt[1][0] = 0x80;
598 clock_enable_pkt[1][1] = 0;
599 clock_enable_pkt[1][2] = 0;
600 clock_enable_pkt[1][3] = 0;
601 clock_enable_pkt[1][4] = 0;
602 clock_enable_pkt[1][5] = 0;
603 clock_enable_pkt[1][6] = 0;
604
605 if (ictx->product == 0xffdc) {
606 clock_enable_pkt[0][7] = 0x50;
607 clock_enable_pkt[1][7] = 0x51;
608 } else {
609 clock_enable_pkt[0][7] = 0x88;
610 clock_enable_pkt[1][7] = 0x8a;
611 }
612
613 break;
614
615 case IMON_DISPLAY_TYPE_VFD:
616 clock_enable_pkt[0][0] = year;
617 clock_enable_pkt[0][1] = month-1;
618 clock_enable_pkt[0][2] = day;
619 clock_enable_pkt[0][3] = dow;
620 clock_enable_pkt[0][4] = hour;
621 clock_enable_pkt[0][5] = minute;
622 clock_enable_pkt[0][6] = second;
623 clock_enable_pkt[0][7] = 0x40;
624
625 clock_enable_pkt[1][0] = 0;
626 clock_enable_pkt[1][1] = 0;
627 clock_enable_pkt[1][2] = 1;
628 clock_enable_pkt[1][3] = 0;
629 clock_enable_pkt[1][4] = 0;
630 clock_enable_pkt[1][5] = 0;
631 clock_enable_pkt[1][6] = 0;
632 clock_enable_pkt[1][7] = 0x42;
633
634 break;
635
636 default:
637 return -ENODEV;
638 }
639
640 for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) {
641 memcpy(ictx->usb_tx_buf, clock_enable_pkt[i], 8);
642 retval = send_packet(ictx);
643 if (retval) {
644 err("%s: send_packet failed for packet %d",
645 __func__, i);
646 break;
647 }
648 }
649
650 return retval;
651}
652
653/**
654 * These are the sysfs functions to handle the association on the iMON 2.4G LT.
655 */
656static ssize_t show_associate_remote(struct device *d,
657 struct device_attribute *attr,
658 char *buf)
659{
660 struct imon_context *ictx = dev_get_drvdata(d);
661
662 if (!ictx)
663 return -ENODEV;
664
665 mutex_lock(&ictx->lock);
666 if (ictx->rf_isassociating)
667 strcpy(buf, "associating\n");
668 else
669 strcpy(buf, "closed\n");
670
671 dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for "
672 "instructions on how to associate your iMON 2.4G DT/LT "
673 "remote\n");
674 mutex_unlock(&ictx->lock);
675 return strlen(buf);
676}
677
678static ssize_t store_associate_remote(struct device *d,
679 struct device_attribute *attr,
680 const char *buf, size_t count)
681{
682 struct imon_context *ictx;
683
684 ictx = dev_get_drvdata(d);
685
686 if (!ictx)
687 return -ENODEV;
688
689 mutex_lock(&ictx->lock);
f789bf40 690 ictx->rf_isassociating = true;
21677cfc
JW		 691 send_associate_24g(ictx);
692 mutex_unlock(&ictx->lock);
693
694 return count;
695}
696
697/**
698 * sysfs functions to control internal imon clock
699 */
700static ssize_t show_imon_clock(struct device *d,
701 struct device_attribute *attr, char *buf)
702{
703 struct imon_context *ictx = dev_get_drvdata(d);
704 size_t len;
705
706 if (!ictx)
707 return -ENODEV;
708
709 mutex_lock(&ictx->lock);
710
711 if (!ictx->display_supported) {
712 len = snprintf(buf, PAGE_SIZE, "Not supported.");
713 } else {
714 len = snprintf(buf, PAGE_SIZE,
715 "To set the clock on your iMON display:\n"
716 "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n"
717 "%s", ictx->display_isopen ?
718 "\nNOTE: imon device must be closed\n" : "");
719 }
720
721 mutex_unlock(&ictx->lock);
722
723 return len;
724}
725
726static ssize_t store_imon_clock(struct device *d,
727 struct device_attribute *attr,
728 const char *buf, size_t count)
729{
730 struct imon_context *ictx = dev_get_drvdata(d);
731 ssize_t retval;
732 unsigned int year, month, day, dow, hour, minute, second;
733
734 if (!ictx)
735 return -ENODEV;
736
737 mutex_lock(&ictx->lock);
738
739 if (!ictx->display_supported) {
740 retval = -ENODEV;
741 goto exit;
742 } else if (ictx->display_isopen) {
743 retval = -EBUSY;
744 goto exit;
745 }
746
747 if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow,
748 &hour, &minute, &second) != 7) {
749 retval = -EINVAL;
750 goto exit;
751 }
752
753 if ((month < 1 || month > 12) ||
754 (day < 1 || day > 31) || (dow > 6) ||
755 (hour > 23) || (minute > 59) || (second > 59)) {
756 retval = -EINVAL;
757 goto exit;
758 }
759
760 retval = send_set_imon_clock(ictx, year, month, day, dow,
761 hour, minute, second);
762 if (retval)
763 goto exit;
764
765 retval = count;
766exit:
767 mutex_unlock(&ictx->lock);
768
769 return retval;
770}
771
772
773static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock,
774 store_imon_clock);
775
776static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote,
777 store_associate_remote);
778
779static struct attribute *imon_display_sysfs_entries[] = {
780 &dev_attr_imon_clock.attr,
781 NULL
782};
783
784static struct attribute_group imon_display_attribute_group = {
785 .attrs = imon_display_sysfs_entries
786};
787
788static struct attribute *imon_rf_sysfs_entries[] = {
789 &dev_attr_associate_remote.attr,
790 NULL
791};
792
793static struct attribute_group imon_rf_attribute_group = {
794 .attrs = imon_rf_sysfs_entries
795};
796
797/**
798 * Writes data to the VFD. The iMON VFD is 2x16 characters
799 * and requires data in 5 consecutive USB interrupt packets,
800 * each packet but the last carrying 7 bytes.
801 *
802 * I don't know if the VFD board supports features such as
803 * scrolling, clearing rows, blanking, etc. so at
804 * the caller must provide a full screen of data. If fewer
805 * than 32 bytes are provided spaces will be appended to
806 * generate a full screen.
807 */
808static ssize_t vfd_write(struct file *file, const char *buf,
809 size_t n_bytes, loff_t *pos)
810{
811 int i;
812 int offset;
813 int seq;
814 int retval = 0;
815 struct imon_context *ictx;
816 const unsigned char vfd_packet6[] = {
817 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
818
abf84383 819 ictx = file->private_data;
21677cfc
JW		 820 if (!ictx) {
821 err("%s: no context for device", __func__);
822 return -ENODEV;
823 }
824
825 mutex_lock(&ictx->lock);
826
827 if (!ictx->dev_present_intf0) {
828 err("%s: no iMON device present", __func__);
829 retval = -ENODEV;
830 goto exit;
831 }
832
833 if (n_bytes <= 0 || n_bytes > 32) {
834 err("%s: invalid payload size", __func__);
835 retval = -EINVAL;
836 goto exit;
837 }
838
839 if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) {
840 retval = -EFAULT;
841 goto exit;
842 }
843
844 /* Pad with spaces */
845 for (i = n_bytes; i < 32; ++i)
846 ictx->tx.data_buf[i] = ' ';
847
848 for (i = 32; i < 35; ++i)
849 ictx->tx.data_buf[i] = 0xFF;
850
851 offset = 0;
852 seq = 0;
853
854 do {
855 memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7);
856 ictx->usb_tx_buf[7] = (unsigned char) seq;
857
858 retval = send_packet(ictx);
859 if (retval) {
860 err("%s: send packet failed for packet #%d",
861 __func__, seq/2);
862 goto exit;
863 } else {
864 seq += 2;
865 offset += 7;
866 }
867
868 } while (offset < 35);
869
870 /* Send packet #6 */
871 memcpy(ictx->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6));
872 ictx->usb_tx_buf[7] = (unsigned char) seq;
873 retval = send_packet(ictx);
874 if (retval)
875 err("%s: send packet failed for packet #%d",
876 __func__, seq / 2);
877
878exit:
879 mutex_unlock(&ictx->lock);
880
881 return (!retval) ? n_bytes : retval;
882}
883
884/**
885 * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte
886 * packets. We accept data as 16 hexadecimal digits, followed by a
887 * newline (to make it easy to drive the device from a command-line
888 * -- even though the actual binary data is a bit complicated).
889 *
890 * The device itself is not a "traditional" text-mode display. It's
891 * actually a 16x96 pixel bitmap display. That means if you want to
892 * display text, you've got to have your own "font" and translate the
893 * text into bitmaps for display. This is really flexible (you can
894 * display whatever diacritics you need, and so on), but it's also
895 * a lot more complicated than most LCDs...
896 */
897static ssize_t lcd_write(struct file *file, const char *buf,
898 size_t n_bytes, loff_t *pos)
899{
900 int retval = 0;
901 struct imon_context *ictx;
902
abf84383 903 ictx = file->private_data;
21677cfc
JW		 904 if (!ictx) {
905 err("%s: no context for device", __func__);
906 return -ENODEV;
907 }
908
909 mutex_lock(&ictx->lock);
910
911 if (!ictx->display_supported) {
912 err("%s: no iMON display present", __func__);
913 retval = -ENODEV;
914 goto exit;
915 }
916
917 if (n_bytes != 8) {
918 err("%s: invalid payload size: %d (expecting 8)",
919 __func__, (int) n_bytes);
920 retval = -EINVAL;
921 goto exit;
922 }
923
924 if (copy_from_user(ictx->usb_tx_buf, buf, 8)) {
925 retval = -EFAULT;
926 goto exit;
927 }
928
929 retval = send_packet(ictx);
930 if (retval) {
931 err("%s: send packet failed!", __func__);
932 goto exit;
933 } else {
934 dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n",
935 __func__, (int) n_bytes);
936 }
937exit:
938 mutex_unlock(&ictx->lock);
939 return (!retval) ? n_bytes : retval;
940}
941
942/**
943 * Callback function for USB core API: transmit data
944 */
945static void usb_tx_callback(struct urb *urb)
946{
947 struct imon_context *ictx;
948
949 if (!urb)
950 return;
951 ictx = (struct imon_context *)urb->context;
952 if (!ictx)
953 return;
954
955 ictx->tx.status = urb->status;
956
957 /* notify waiters that write has finished */
f789bf40 958 ictx->tx.busy = false;
21677cfc
JW		 959 smp_rmb(); /* ensure later readers know we're not busy */
960 complete(&ictx->tx.finished);
961}
962
21677cfc
JW		 963/**
964 * report touchscreen input
965 */
966static void imon_touch_display_timeout(unsigned long data)
967{
968 struct imon_context *ictx = (struct imon_context *)data;
969
f03900d6 970 if (ictx->display_type != IMON_DISPLAY_TYPE_VGA)
21677cfc
JW		 971 return;
972
973 input_report_abs(ictx->touch, ABS_X, ictx->touch_x);
974 input_report_abs(ictx->touch, ABS_Y, ictx->touch_y);
975 input_report_key(ictx->touch, BTN_TOUCH, 0x00);
976 input_sync(ictx->touch);
977}
978
979/**
980 * iMON IR receivers support two different signal sets -- those used by
981 * the iMON remotes, and those used by the Windows MCE remotes (which is
982 * really just RC-6), but only one or the other at a time, as the signals
983 * are decoded onboard the receiver.
984 */
6718e8ad 985int imon_ir_change_protocol(void *priv, u64 ir_type)
21677cfc
JW		 986{
987 int retval;
6718e8ad 988 struct imon_context *ictx = priv;
21677cfc 989 struct device *dev = ictx->dev;
6718e8ad 990 bool pad_mouse;
21677cfc
JW		 991 unsigned char ir_proto_packet[] = {
992 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 };
993
666a9ed8 994 if (ir_type && !(ir_type & ictx->props->allowed_protos))
21677cfc
JW		 995 dev_warn(dev, "Looks like you're trying to use an IR protocol "
996 "this device does not support\n");
997
6718e8ad
JW		 998 switch (ir_type) {
999 case IR_TYPE_RC6:
21677cfc
JW		 1000 dev_dbg(dev, "Configuring IR receiver for MCE protocol\n");
1001 ir_proto_packet[0] = 0x01;
6718e8ad 1002 pad_mouse = false;
21677cfc 1003 break;
6718e8ad
JW		 1004 case IR_TYPE_UNKNOWN:
1005 case IR_TYPE_OTHER:
666a9ed8
JW		 1006 dev_dbg(dev, "Configuring IR receiver for iMON protocol\n");
1007 if (pad_stabilize)
6718e8ad 1008 pad_mouse = true;
666a9ed8
JW		 1009 else {
1010 dev_dbg(dev, "PAD stabilize functionality disabled\n");
6718e8ad
JW		 1011 pad_mouse = false;
1012 }
21677cfc 1013 /* ir_proto_packet[0] = 0x00; // already the default */
6718e8ad 1014 ir_type = IR_TYPE_OTHER;
21677cfc
JW		 1015 break;
1016 default:
6718e8ad 1017 dev_warn(dev, "Unsupported IR protocol specified, overriding "
666a9ed8
JW		 1018 "to iMON IR protocol\n");
1019 if (pad_stabilize)
6718e8ad 1020 pad_mouse = true;
666a9ed8
JW		 1021 else {
1022 dev_dbg(dev, "PAD stabilize functionality disabled\n");
6718e8ad
JW		 1023 pad_mouse = false;
1024 }
1025 /* ir_proto_packet[0] = 0x00; // already the default */
1026 ir_type = IR_TYPE_OTHER;
21677cfc
JW		 1027 break;
1028 }
1029
1030 memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet));
1031
1032 retval = send_packet(ictx);
6718e8ad
JW		 1033 if (retval)
1034 goto out;
1035
1036 ictx->ir_type = ir_type;
1037 ictx->pad_mouse = pad_mouse;
1038
1039out:
1040 return retval;
21677cfc
JW		 1041}
1042
1043static inline int tv2int(const struct timeval *a, const struct timeval *b)
1044{
1045 int usecs = 0;
1046 int sec = 0;
1047
1048 if (b->tv_usec > a->tv_usec) {
1049 usecs = 1000000;
1050 sec--;
1051 }
1052
1053 usecs += a->tv_usec - b->tv_usec;
1054
1055 sec += a->tv_sec - b->tv_sec;
1056 sec *= 1000;
1057 usecs /= 1000;
1058 sec += usecs;
1059
1060 if (sec < 0)
1061 sec = 1000;
1062
1063 return sec;
1064}
1065
1066/**
1067 * The directional pad behaves a bit differently, depending on whether this is
1068 * one of the older ffdc devices or a newer device. Newer devices appear to
1069 * have a higher resolution matrix for more precise mouse movement, but it
1070 * makes things overly sensitive in keyboard mode, so we do some interesting
1071 * contortions to make it less touchy. Older devices run through the same
1072 * routine with shorter timeout and a smaller threshold.
1073 */
1074static int stabilize(int a, int b, u16 timeout, u16 threshold)
1075{
1076 struct timeval ct;
1077 static struct timeval prev_time = {0, 0};
1078 static struct timeval hit_time = {0, 0};
1079 static int x, y, prev_result, hits;
1080 int result = 0;
1081 int msec, msec_hit;
1082
1083 do_gettimeofday(&ct);
1084 msec = tv2int(&ct, &prev_time);
1085 msec_hit = tv2int(&ct, &hit_time);
1086
1087 if (msec > 100) {
1088 x = 0;
1089 y = 0;
1090 hits = 0;
1091 }
1092
1093 x += a;
1094 y += b;
1095
1096 prev_time = ct;
1097
1098 if (abs(x) > threshold || abs(y) > threshold) {
1099 if (abs(y) > abs(x))
1100 result = (y > 0) ? 0x7F : 0x80;
1101 else
1102 result = (x > 0) ? 0x7F00 : 0x8000;
1103
1104 x = 0;
1105 y = 0;
1106
1107 if (result == prev_result) {
1108 hits++;
1109
1110 if (hits > 3) {
1111 switch (result) {
1112 case 0x7F:
1113 y = 17 * threshold / 30;
1114 break;
1115 case 0x80:
1116 y -= 17 * threshold / 30;
1117 break;
1118 case 0x7F00:
1119 x = 17 * threshold / 30;
1120 break;
1121 case 0x8000:
1122 x -= 17 * threshold / 30;
1123 break;
1124 }
1125 }
1126
1127 if (hits == 2 && msec_hit < timeout) {
1128 result = 0;
1129 hits = 1;
1130 }
1131 } else {
1132 prev_result = result;
1133 hits = 1;
1134 hit_time = ct;
1135 }
1136 }
1137
1138 return result;
1139}
1140
eaf2bcc9 1141static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 scancode)
21677cfc 1142{
21677cfc
JW		 1143 u32 keycode;
1144 u32 release;
1145 bool is_release_code = false;
1146
1147 /* Look for the initial press of a button */
eaf2bcc9
DH		 1148 keycode = ir_g_keycode_from_table(ictx->rdev, scancode);
1149 ictx->rc_toggle = 0x0;
1150 ictx->rc_scancode = scancode;
21677cfc
JW		 1151
1152 /* Look for the release of a button */
1153 if (keycode == KEY_RESERVED) {
1154 release = scancode & ~0x4000;
eaf2bcc9 1155 keycode = ir_g_keycode_from_table(ictx->rdev, release);
21677cfc
JW		 1156 if (keycode != KEY_RESERVED)
1157 is_release_code = true;
1158 }
1159
1160 ictx->release_code = is_release_code;
1161
1162 return keycode;
1163}
1164
eaf2bcc9 1165static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 scancode)
21677cfc 1166{
21677cfc
JW		 1167 u32 keycode;
1168
1169#define MCE_KEY_MASK 0x7000
1170#define MCE_TOGGLE_BIT 0x8000
1171
1172 /*
1173 * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx
1174 * (the toggle bit flipping between alternating key presses), while
1175 * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep
1176 * the table trim, we always or in the bits to look up 0x8000ff4xx,
1177 * but we can't or them into all codes, as some keys are decoded in
1178 * a different way w/o the same use of the toggle bit...
1179 */
eaf2bcc9 1180 if (scancode & 0x80000000)
21677cfc
JW		 1181 scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT;
1182
eaf2bcc9
DH		 1183 ictx->rc_scancode = scancode;
1184 keycode = ir_g_keycode_from_table(ictx->rdev, scancode);
1185
1186 /* not used in mce mode, but make sure we know its false */
1187 ictx->release_code = false;
21677cfc
JW		 1188
1189 return keycode;
1190}
1191
eaf2bcc9 1192static u32 imon_panel_key_lookup(u64 code)
21677cfc
JW		 1193{
1194 int i;
083e4721 1195 u32 keycode = KEY_RESERVED;
21677cfc 1196
083e4721
JW		 1197 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
1198 if (imon_panel_key_table[i].hw_code == (code | 0xffee)) {
1199 keycode = imon_panel_key_table[i].keycode;
21677cfc 1200 break;
083e4721
JW		 1201 }
1202 }
21677cfc
JW		 1203
1204 return keycode;
1205}
1206
1207static bool imon_mouse_event(struct imon_context *ictx,
1208 unsigned char *buf, int len)
1209{
1210 char rel_x = 0x00, rel_y = 0x00;
1211 u8 right_shift = 1;
f789bf40 1212 bool mouse_input = true;
21677cfc 1213 int dir = 0;
693508df
JW		 1214 unsigned long flags;
1215
1216 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1217
1218 /* newer iMON device PAD or mouse button */
1219 if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) {
1220 rel_x = buf[2];
1221 rel_y = buf[3];
1222 right_shift = 1;
1223 /* 0xffdc iMON PAD or mouse button input */
1224 } else if (ictx->product == 0xffdc && (buf[0] & 0x40) &&
1225 !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) {
1226 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1227 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1228 if (buf[0] & 0x02)
1229 rel_x |= ~0x0f;
1230 rel_x = rel_x + rel_x / 2;
1231 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1232 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1233 if (buf[0] & 0x01)
1234 rel_y |= ~0x0f;
1235 rel_y = rel_y + rel_y / 2;
1236 right_shift = 2;
1237 /* some ffdc devices decode mouse buttons differently... */
1238 } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) {
1239 right_shift = 2;
1240 /* ch+/- buttons, which we use for an emulated scroll wheel */
1241 } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) {
1242 dir = 1;
1243 } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) {
1244 dir = -1;
1245 } else
f789bf40 1246 mouse_input = false;
21677cfc 1247
693508df
JW		 1248 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1249
21677cfc
JW		 1250 if (mouse_input) {
1251 dev_dbg(ictx->dev, "sending mouse data via input subsystem\n");
1252
1253 if (dir) {
1254 input_report_rel(ictx->idev, REL_WHEEL, dir);
1255 } else if (rel_x || rel_y) {
1256 input_report_rel(ictx->idev, REL_X, rel_x);
1257 input_report_rel(ictx->idev, REL_Y, rel_y);
1258 } else {
1259 input_report_key(ictx->idev, BTN_LEFT, buf[1] & 0x1);
1260 input_report_key(ictx->idev, BTN_RIGHT,
1261 buf[1] >> right_shift & 0x1);
1262 }
1263 input_sync(ictx->idev);
693508df 1264 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc 1265 ictx->last_keycode = ictx->kc;
693508df 1266 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1267 }
1268
1269 return mouse_input;
1270}
1271
1272static void imon_touch_event(struct imon_context *ictx, unsigned char *buf)
1273{
1274 mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT);
1275 ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4);
1276 ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf));
1277 input_report_abs(ictx->touch, ABS_X, ictx->touch_x);
1278 input_report_abs(ictx->touch, ABS_Y, ictx->touch_y);
1279 input_report_key(ictx->touch, BTN_TOUCH, 0x01);
1280 input_sync(ictx->touch);
1281}
1282
1283static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf)
1284{
1285 int dir = 0;
1286 char rel_x = 0x00, rel_y = 0x00;
1287 u16 timeout, threshold;
eaf2bcc9 1288 u32 scancode = KEY_RESERVED;
693508df 1289 unsigned long flags;
21677cfc
JW		 1290
1291 /*
1292 * The imon directional pad functions more like a touchpad. Bytes 3 & 4
1293 * contain a position coordinate (x,y), with each component ranging
1294 * from -14 to 14. We want to down-sample this to only 4 discrete values
1295 * for up/down/left/right arrow keys. Also, when you get too close to
1296 * diagonals, it has a tendancy to jump back and forth, so lets try to
1297 * ignore when they get too close.
1298 */
1299 if (ictx->product != 0xffdc) {
1300 /* first, pad to 8 bytes so it conforms with everything else */
1301 buf[5] = buf[6] = buf[7] = 0;
1302 timeout = 500; /* in msecs */
1303 /* (2*threshold) x (2*threshold) square */
1304 threshold = pad_thresh ? pad_thresh : 28;
1305 rel_x = buf[2];
1306 rel_y = buf[3];
1307
6718e8ad 1308 if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) {
21677cfc
JW		 1309 if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) {
1310 dir = stabilize((int)rel_x, (int)rel_y,
1311 timeout, threshold);
1312 if (!dir) {
693508df
JW		 1313 spin_lock_irqsave(&ictx->kc_lock,
1314 flags);
21677cfc 1315 ictx->kc = KEY_UNKNOWN;
693508df
JW		 1316 spin_unlock_irqrestore(&ictx->kc_lock,
1317 flags);
21677cfc
JW		 1318 return;
1319 }
1320 buf[2] = dir & 0xFF;
1321 buf[3] = (dir >> 8) & 0xFF;
eaf2bcc9 1322 scancode = be32_to_cpu(*((u32 *)buf));
21677cfc
JW		 1323 }
1324 } else {
eaf2bcc9
DH		 1325 /*
1326 * Hack alert: instead of using keycodes, we have
1327 * to use hard-coded scancodes here...
1328 */
21677cfc
JW		 1329 if (abs(rel_y) > abs(rel_x)) {
1330 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1331 buf[3] = 0;
eaf2bcc9
DH		 1332 if (rel_y > 0)
1333 scancode = 0x01007f00; /* KEY_DOWN */
1334 else
1335 scancode = 0x01008000; /* KEY_UP */
21677cfc
JW		 1336 } else {
1337 buf[2] = 0;
1338 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
eaf2bcc9
DH		 1339 if (rel_x > 0)
1340 scancode = 0x0100007f; /* KEY_RIGHT */
1341 else
1342 scancode = 0x01000080; /* KEY_LEFT */
21677cfc
JW		 1343 }
1344 }
1345
1346 /*
1347 * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad
1348 * device (15c2:ffdc). The remote generates various codes from
1349 * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates
1350 * 0x688301b7 and the right one 0x688481b7. All other keys generate
1351 * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with
1352 * reversed endianess. Extract direction from buffer, rotate endianess,
1353 * adjust sign and feed the values into stabilize(). The resulting codes
1354 * will be 0x01008000, 0x01007F00, which match the newer devices.
1355 */
1356 } else {
1357 timeout = 10; /* in msecs */
1358 /* (2*threshold) x (2*threshold) square */
1359 threshold = pad_thresh ? pad_thresh : 15;
1360
1361 /* buf[1] is x */
1362 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1363 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1364 if (buf[0] & 0x02)
1365 rel_x |= ~0x10+1;
1366 /* buf[2] is y */
1367 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1368 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1369 if (buf[0] & 0x01)
1370 rel_y |= ~0x10+1;
1371
1372 buf[0] = 0x01;
1373 buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0;
1374
6718e8ad 1375 if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) {
21677cfc
JW		 1376 dir = stabilize((int)rel_x, (int)rel_y,
1377 timeout, threshold);
1378 if (!dir) {
693508df 1379 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc 1380 ictx->kc = KEY_UNKNOWN;
693508df 1381 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1382 return;
1383 }
1384 buf[2] = dir & 0xFF;
1385 buf[3] = (dir >> 8) & 0xFF;
eaf2bcc9 1386 scancode = be32_to_cpu(*((u32 *)buf));
21677cfc 1387 } else {
eaf2bcc9
DH		 1388 /*
1389 * Hack alert: instead of using keycodes, we have
1390 * to use hard-coded scancodes here...
1391 */
21677cfc
JW		 1392 if (abs(rel_y) > abs(rel_x)) {
1393 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1394 buf[3] = 0;
eaf2bcc9
DH		 1395 if (rel_y > 0)
1396 scancode = 0x01007f00; /* KEY_DOWN */
1397 else
1398 scancode = 0x01008000; /* KEY_UP */
21677cfc
JW		 1399 } else {
1400 buf[2] = 0;
1401 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
eaf2bcc9
DH		 1402 if (rel_x > 0)
1403 scancode = 0x0100007f; /* KEY_RIGHT */
1404 else
1405 scancode = 0x01000080; /* KEY_LEFT */
21677cfc
JW		 1406 }
1407 }
1408 }
eaf2bcc9 1409
693508df
JW		 1410 if (scancode) {
1411 spin_lock_irqsave(&ictx->kc_lock, flags);
eaf2bcc9 1412 ictx->kc = imon_remote_key_lookup(ictx, scancode);
693508df
JW		 1413 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1414 }
21677cfc
JW		 1415}
1416
eaf2bcc9
DH		 1417/**
1418 * figure out if these is a press or a release. We don't actually
1419 * care about repeats, as those will be auto-generated within the IR
1420 * subsystem for repeating scancodes.
1421 */
21677cfc
JW		 1422static int imon_parse_press_type(struct imon_context *ictx,
1423 unsigned char *buf, u8 ktype)
1424{
1425 int press_type = 0;
693508df
JW		 1426 unsigned long flags;
1427
1428 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1429
1430 /* key release of 0x02XXXXXX key */
1431 if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00)
1432 ictx->kc = ictx->last_keycode;
1433
1434 /* mouse button release on (some) 0xffdc devices */
1435 else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 &&
1436 buf[2] == 0x81 && buf[3] == 0xb7)
1437 ictx->kc = ictx->last_keycode;
1438
1439 /* mouse button release on (some other) 0xffdc devices */
1440 else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 &&
1441 buf[2] == 0x81 && buf[3] == 0xb7)
1442 ictx->kc = ictx->last_keycode;
1443
eaf2bcc9 1444 /* mce-specific button handling, no keyup events */
21677cfc 1445 else if (ktype == IMON_KEY_MCE) {
eaf2bcc9
DH		 1446 ictx->rc_toggle = buf[2];
1447 press_type = 1;
21677cfc
JW		 1448
1449 /* incoherent or irrelevant data */
1450 } else if (ictx->kc == KEY_RESERVED)
1451 press_type = -EINVAL;
1452
1453 /* key release of 0xXXXXXXb7 key */
1454 else if (ictx->release_code)
1455 press_type = 0;
1456
1457 /* this is a button press */
1458 else
1459 press_type = 1;
1460
693508df
JW		 1461 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1462
21677cfc
JW		 1463 return press_type;
1464}
1465
1466/**
1467 * Process the incoming packet
1468 */
1469static void imon_incoming_packet(struct imon_context *ictx,
1470 struct urb *urb, int intf)
1471{
1472 int len = urb->actual_length;
1473 unsigned char *buf = urb->transfer_buffer;
1474 struct device *dev = ictx->dev;
693508df 1475 unsigned long flags;
21677cfc 1476 u32 kc;
f789bf40 1477 bool norelease = false;
21677cfc 1478 int i;
eaf2bcc9 1479 u64 scancode;
21677cfc 1480 struct input_dev *idev = NULL;
eaf2bcc9 1481 struct ir_input_dev *irdev = NULL;
21677cfc
JW		 1482 int press_type = 0;
1483 int msec;
1484 struct timeval t;
1485 static struct timeval prev_time = { 0, 0 };
eaf2bcc9 1486 u8 ktype;
21677cfc
JW		 1487
1488 idev = ictx->idev;
eaf2bcc9 1489 irdev = input_get_drvdata(idev);
21677cfc
JW		 1490
1491 /* filter out junk data on the older 0xffdc imon devices */
bbe4690f 1492 if ((buf[0] == 0xff) && (buf[1] == 0xff) && (buf[2] == 0xff))
21677cfc
JW		 1493 return;
1494
1495 /* Figure out what key was pressed */
21677cfc 1496 if (len == 8 && buf[7] == 0xee) {
eaf2bcc9 1497 scancode = be64_to_cpu(*((u64 *)buf));
21677cfc 1498 ktype = IMON_KEY_PANEL;
eaf2bcc9 1499 kc = imon_panel_key_lookup(scancode);
21677cfc 1500 } else {
eaf2bcc9 1501 scancode = be32_to_cpu(*((u32 *)buf));
6718e8ad 1502 if (ictx->ir_type == IR_TYPE_RC6) {
eaf2bcc9 1503 ktype = IMON_KEY_IMON;
21677cfc
JW		 1504 if (buf[0] == 0x80)
1505 ktype = IMON_KEY_MCE;
eaf2bcc9
DH		 1506 kc = imon_mce_key_lookup(ictx, scancode);
1507 } else {
1508 ktype = IMON_KEY_IMON;
1509 kc = imon_remote_key_lookup(ictx, scancode);
1510 }
21677cfc
JW		 1511 }
1512
693508df 1513 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1514 /* keyboard/mouse mode toggle button */
1515 if (kc == KEY_KEYBOARD && !ictx->release_code) {
1516 ictx->last_keycode = kc;
1517 if (!nomouse) {
1518 ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1;
1519 dev_dbg(dev, "toggling to %s mode\n",
1520 ictx->pad_mouse ? "mouse" : "keyboard");
693508df 1521 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1522 return;
1523 } else {
1524 ictx->pad_mouse = 0;
1525 dev_dbg(dev, "mouse mode disabled, passing key value\n");
1526 }
1527 }
1528
1529 ictx->kc = kc;
693508df 1530 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1531
1532 /* send touchscreen events through input subsystem if touchpad data */
1533 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 &&
1534 buf[7] == 0x86) {
1535 imon_touch_event(ictx, buf);
eaf2bcc9 1536 return;
21677cfc
JW		 1537
1538 /* look for mouse events with pad in mouse mode */
1539 } else if (ictx->pad_mouse) {
1540 if (imon_mouse_event(ictx, buf, len))
1541 return;
1542 }
1543
1544 /* Now for some special handling to convert pad input to arrow keys */
1545 if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) ||
1546 ((len == 8) && (buf[0] & 0x40) &&
1547 !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) {
1548 len = 8;
1549 imon_pad_to_keys(ictx, buf);
f789bf40 1550 norelease = true;
21677cfc
JW		 1551 }
1552
1553 if (debug) {
1554 printk(KERN_INFO "intf%d decoded packet: ", intf);
1555 for (i = 0; i < len; ++i)
1556 printk("%02x ", buf[i]);
1557 printk("\n");
1558 }
1559
1560 press_type = imon_parse_press_type(ictx, buf, ktype);
1561 if (press_type < 0)
1562 goto not_input_data;
1563
693508df 1564 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1565 if (ictx->kc == KEY_UNKNOWN)
1566 goto unknown_key;
693508df 1567 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1568
eaf2bcc9
DH		 1569 if (ktype != IMON_KEY_PANEL) {
1570 if (press_type == 0)
1571 ir_keyup(irdev);
1572 else {
1573 ir_keydown(ictx->rdev, ictx->rc_scancode,
1574 ictx->rc_toggle);
693508df 1575 spin_lock_irqsave(&ictx->kc_lock, flags);
eaf2bcc9 1576 ictx->last_keycode = ictx->kc;
693508df 1577 spin_unlock_irqrestore(&ictx->kc_lock, flags);
eaf2bcc9
DH		 1578 }
1579 return;
1580 }
1581
1582 /* Only panel type events left to process now */
693508df
JW		 1583 spin_lock_irqsave(&ictx->kc_lock, flags);
1584
eaf2bcc9
DH		 1585 /* KEY_MUTE repeats from knob need to be suppressed */
1586 if (ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) {
21677cfc
JW		 1587 do_gettimeofday(&t);
1588 msec = tv2int(&t, &prev_time);
1589 prev_time = t;
693508df
JW		 1590 if (msec < idev->rep[REP_DELAY]) {
1591 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1592 return;
693508df 1593 }
21677cfc 1594 }
693508df
JW		 1595 kc = ictx->kc;
1596
1597 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1598
693508df 1599 input_report_key(idev, kc, press_type);
21677cfc
JW		 1600 input_sync(idev);
1601
eaf2bcc9 1602 /* panel keys don't generate a release */
693508df 1603 input_report_key(idev, kc, 0);
eaf2bcc9 1604 input_sync(idev);
21677cfc 1605
693508df 1606 ictx->last_keycode = kc;
21677cfc
JW		 1607
1608 return;
1609
1610unknown_key:
693508df 1611 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1612 dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__,
eaf2bcc9 1613 (long long)scancode);
21677cfc
JW		 1614 return;
1615
1616not_input_data:
1617 if (len != 8) {
1618 dev_warn(dev, "imon %s: invalid incoming packet "
1619 "size (len = %d, intf%d)\n", __func__, len, intf);
1620 return;
1621 }
1622
1623 /* iMON 2.4G associate frame */
1624 if (buf[0] == 0x00 &&
1625 buf[2] == 0xFF && /* REFID */
1626 buf[3] == 0xFF &&
1627 buf[4] == 0xFF &&
1628 buf[5] == 0xFF && /* iMON 2.4G */
1629 ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */
1630 (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */
1631 dev_warn(dev, "%s: remote associated refid=%02X\n",
1632 __func__, buf[1]);
f789bf40 1633 ictx->rf_isassociating = false;
21677cfc
JW		 1634 }
1635}
1636
1637/**
1638 * Callback function for USB core API: receive data
1639 */
1640static void usb_rx_callback_intf0(struct urb *urb)
1641{
1642 struct imon_context *ictx;
1643 int intfnum = 0;
1644
1645 if (!urb)
1646 return;
1647
1648 ictx = (struct imon_context *)urb->context;
1649 if (!ictx)
1650 return;
1651
1652 switch (urb->status) {
1653 case -ENOENT: /* usbcore unlink successful! */
1654 return;
1655
1656 case -ESHUTDOWN: /* transport endpoint was shut down */
1657 break;
1658
1659 case 0:
1660 imon_incoming_packet(ictx, urb, intfnum);
1661 break;
1662
1663 default:
1664 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1665 __func__, urb->status);
1666 break;
1667 }
1668
1669 usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
1670}
1671
1672static void usb_rx_callback_intf1(struct urb *urb)
1673{
1674 struct imon_context *ictx;
1675 int intfnum = 1;
1676
1677 if (!urb)
1678 return;
1679
1680 ictx = (struct imon_context *)urb->context;
1681 if (!ictx)
1682 return;
1683
1684 switch (urb->status) {
1685 case -ENOENT: /* usbcore unlink successful! */
1686 return;
1687
1688 case -ESHUTDOWN: /* transport endpoint was shut down */
1689 break;
1690
1691 case 0:
1692 imon_incoming_packet(ictx, urb, intfnum);
1693 break;
1694
1695 default:
1696 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1697 __func__, urb->status);
1698 break;
1699 }
1700
1701 usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
1702}
1703
eaf2bcc9
DH		 1704static struct input_dev *imon_init_rdev(struct imon_context *ictx)
1705{
1706 struct input_dev *rdev;
1707 struct ir_dev_props *props;
1708 int ret;
1709
1710 rdev = input_allocate_device();
1711 props = kzalloc(sizeof(*props), GFP_KERNEL);
1712 if (!rdev || !props) {
1713 dev_err(ictx->dev, "remote control dev allocation failed\n");
1714 goto out;
1715 }
1716
1717 snprintf(ictx->name_rdev, sizeof(ictx->name_rdev),
1718 "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product);
1719 usb_make_path(ictx->usbdev_intf0, ictx->phys_rdev,
1720 sizeof(ictx->phys_rdev));
1721 strlcat(ictx->phys_rdev, "/input0", sizeof(ictx->phys_rdev));
1722
1723 rdev->name = ictx->name_rdev;
1724 rdev->phys = ictx->phys_rdev;
1725 usb_to_input_id(ictx->usbdev_intf0, &rdev->id);
1726 rdev->dev.parent = ictx->dev;
1727 rdev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
1728 input_set_drvdata(rdev, ictx);
1729
1730 props->priv = ictx;
1731 props->driver_type = RC_DRIVER_SCANCODE;
1732 props->allowed_protos = IR_TYPE_OTHER | IR_TYPE_RC6; /* iMON PAD or MCE */
1733 props->change_protocol = imon_ir_change_protocol;
1734 ictx->props = props;
1735
1736 ret = ir_input_register(rdev, RC_MAP_IMON_PAD, props, MOD_NAME);
1737 if (ret < 0) {
1738 dev_err(ictx->dev, "remote input dev register failed\n");
1739 goto out;
1740 }
1741
1742 return rdev;
1743
1744out:
1745 kfree(props);
1746 input_free_device(rdev);
1747 return NULL;
1748}
1749
21677cfc
JW		 1750static struct input_dev *imon_init_idev(struct imon_context *ictx)
1751{
1752 struct input_dev *idev;
21677cfc 1753 int ret, i;
21677cfc
JW		 1754
1755 idev = input_allocate_device();
1756 if (!idev) {
eaf2bcc9
DH		 1757 dev_err(ictx->dev, "input dev allocation failed\n");
1758 goto out;
21677cfc
JW		 1759 }
1760
21677cfc 1761 snprintf(ictx->name_idev, sizeof(ictx->name_idev),
eaf2bcc9
DH		 1762 "iMON Panel, Knob and Mouse(%04x:%04x)",
1763 ictx->vendor, ictx->product);
21677cfc
JW		 1764 idev->name = ictx->name_idev;
1765
1766 usb_make_path(ictx->usbdev_intf0, ictx->phys_idev,
1767 sizeof(ictx->phys_idev));
eaf2bcc9 1768 strlcat(ictx->phys_idev, "/input1", sizeof(ictx->phys_idev));
21677cfc
JW		 1769 idev->phys = ictx->phys_idev;
1770
db190fc1 1771 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
21677cfc
JW		 1772
1773 idev->keybit[BIT_WORD(BTN_MOUSE)] =
1774 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1775 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
1776 BIT_MASK(REL_WHEEL);
1777
1778 /* panel and/or knob code support */
1779 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
1780 u32 kc = imon_panel_key_table[i].keycode;
1781 __set_bit(kc, idev->keybit);
1782 }
1783
21677cfc
JW		 1784 usb_to_input_id(ictx->usbdev_intf0, &idev->id);
1785 idev->dev.parent = ictx->dev;
eaf2bcc9 1786 input_set_drvdata(idev, ictx);
21677cfc 1787
eaf2bcc9 1788 ret = input_register_device(idev);
21677cfc 1789 if (ret < 0) {
eaf2bcc9
DH		 1790 dev_err(ictx->dev, "input dev register failed\n");
1791 goto out;
21677cfc
JW		 1792 }
1793
1794 return idev;
1795
eaf2bcc9 1796out:
21677cfc 1797 input_free_device(idev);
21677cfc
JW		 1798 return NULL;
1799}
1800
1801static struct input_dev *imon_init_touch(struct imon_context *ictx)
1802{
1803 struct input_dev *touch;
1804 int ret;
1805
1806 touch = input_allocate_device();
1807 if (!touch) {
1808 dev_err(ictx->dev, "touchscreen input dev allocation failed\n");
1809 goto touch_alloc_failed;
1810 }
1811
1812 snprintf(ictx->name_touch, sizeof(ictx->name_touch),
1813 "iMON USB Touchscreen (%04x:%04x)",
1814 ictx->vendor, ictx->product);
1815 touch->name = ictx->name_touch;
1816
1817 usb_make_path(ictx->usbdev_intf1, ictx->phys_touch,
1818 sizeof(ictx->phys_touch));
eaf2bcc9 1819 strlcat(ictx->phys_touch, "/input2", sizeof(ictx->phys_touch));
21677cfc
JW		 1820 touch->phys = ictx->phys_touch;
1821
1822 touch->evbit[0] =
1823 BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1824 touch->keybit[BIT_WORD(BTN_TOUCH)] =
1825 BIT_MASK(BTN_TOUCH);
1826 input_set_abs_params(touch, ABS_X,
1827 0x00, 0xfff, 0, 0);
1828 input_set_abs_params(touch, ABS_Y,
1829 0x00, 0xfff, 0, 0);
1830
1831 input_set_drvdata(touch, ictx);
1832
1833 usb_to_input_id(ictx->usbdev_intf1, &touch->id);
1834 touch->dev.parent = ictx->dev;
1835 ret = input_register_device(touch);
1836 if (ret < 0) {
1837 dev_info(ictx->dev, "touchscreen input dev register failed\n");
1838 goto touch_register_failed;
1839 }
1840
1841 return touch;
1842
1843touch_register_failed:
1844 input_free_device(ictx->touch);
21677cfc
JW		 1845
1846touch_alloc_failed:
1847 return NULL;
1848}
1849
1850static bool imon_find_endpoints(struct imon_context *ictx,
1851 struct usb_host_interface *iface_desc)
1852{
1853 struct usb_endpoint_descriptor *ep;
1854 struct usb_endpoint_descriptor *rx_endpoint = NULL;
1855 struct usb_endpoint_descriptor *tx_endpoint = NULL;
1856 int ifnum = iface_desc->desc.bInterfaceNumber;
1857 int num_endpts = iface_desc->desc.bNumEndpoints;
1858 int i, ep_dir, ep_type;
f789bf40
JW		 1859 bool ir_ep_found = false;
1860 bool display_ep_found = false;
1861 bool tx_control = false;
21677cfc
JW		 1862
1863 /*
1864 * Scan the endpoint list and set:
1865 * first input endpoint = IR endpoint
1866 * first output endpoint = display endpoint
1867 */
1868 for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) {
1869 ep = &iface_desc->endpoint[i].desc;
1870 ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
1871 ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
1872
1873 if (!ir_ep_found && ep_dir == USB_DIR_IN &&
1874 ep_type == USB_ENDPOINT_XFER_INT) {
1875
1876 rx_endpoint = ep;
f789bf40 1877 ir_ep_found = true;
21677cfc
JW		 1878 dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__);
1879
1880 } else if (!display_ep_found && ep_dir == USB_DIR_OUT &&
1881 ep_type == USB_ENDPOINT_XFER_INT) {
1882 tx_endpoint = ep;
f789bf40 1883 display_ep_found = true;
21677cfc
JW		 1884 dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__);
1885 }
1886 }
1887
1888 if (ifnum == 0) {
1889 ictx->rx_endpoint_intf0 = rx_endpoint;
1890 /*
1891 * tx is used to send characters to lcd/vfd, associate RF
1892 * remotes, set IR protocol, and maybe more...
1893 */
1894 ictx->tx_endpoint = tx_endpoint;
1895 } else {
1896 ictx->rx_endpoint_intf1 = rx_endpoint;
1897 }
1898
1899 /*
1900 * If we didn't find a display endpoint, this is probably one of the
1901 * newer iMON devices that use control urb instead of interrupt
1902 */
1903 if (!display_ep_found) {
f789bf40
JW		 1904 tx_control = true;
1905 display_ep_found = true;
21677cfc
JW		 1906 dev_dbg(ictx->dev, "%s: device uses control endpoint, not "
1907 "interface OUT endpoint\n", __func__);
1908 }
1909
1910 /*
1911 * Some iMON receivers have no display. Unfortunately, it seems
1912 * that SoundGraph recycles device IDs between devices both with
1913 * and without... :\
1914 */
1915 if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) {
f789bf40 1916 display_ep_found = false;
21677cfc
JW		 1917 dev_dbg(ictx->dev, "%s: device has no display\n", __func__);
1918 }
1919
1920 /*
1921 * iMON Touch devices have a VGA touchscreen, but no "display", as
1922 * that refers to e.g. /dev/lcd0 (a character device LCD or VFD).
1923 */
1924 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
f789bf40 1925 display_ep_found = false;
21677cfc
JW		 1926 dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__);
1927 }
1928
1929 /* Input endpoint is mandatory */
1930 if (!ir_ep_found)
1931 err("%s: no valid input (IR) endpoint found.", __func__);
1932
1933 ictx->tx_control = tx_control;
1934
1935 if (display_ep_found)
1936 ictx->display_supported = true;
1937
1938 return ir_ep_found;
1939
1940}
1941
1942static struct imon_context *imon_init_intf0(struct usb_interface *intf)
1943{
1944 struct imon_context *ictx;
1945 struct urb *rx_urb;
1946 struct urb *tx_urb;
1947 struct device *dev = &intf->dev;
1948 struct usb_host_interface *iface_desc;
1f71baef 1949 int ret = -ENOMEM;
21677cfc
JW		 1950
1951 ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL);
1952 if (!ictx) {
1953 dev_err(dev, "%s: kzalloc failed for context", __func__);
1954 goto exit;
1955 }
1956 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
1957 if (!rx_urb) {
1958 dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__);
1959 goto rx_urb_alloc_failed;
1960 }
1961 tx_urb = usb_alloc_urb(0, GFP_KERNEL);
1962 if (!tx_urb) {
1963 dev_err(dev, "%s: usb_alloc_urb failed for display urb",
1964 __func__);
1965 goto tx_urb_alloc_failed;
1966 }
1967
1968 mutex_init(&ictx->lock);
693508df 1969 spin_lock_init(&ictx->kc_lock);
21677cfc
JW		 1970
1971 mutex_lock(&ictx->lock);
1972
1973 ictx->dev = dev;
1974 ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf));
f789bf40 1975 ictx->dev_present_intf0 = true;
21677cfc
JW		 1976 ictx->rx_urb_intf0 = rx_urb;
1977 ictx->tx_urb = tx_urb;
bbe4690f 1978 ictx->rf_device = false;
21677cfc
JW		 1979
1980 ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor);
1981 ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct);
1982
1f71baef 1983 ret = -ENODEV;
21677cfc 1984 iface_desc = intf->cur_altsetting;
1f71baef 1985 if (!imon_find_endpoints(ictx, iface_desc)) {
21677cfc 1986 goto find_endpoint_failed;
1f71baef 1987 }
21677cfc
JW		 1988
1989 ictx->idev = imon_init_idev(ictx);
1990 if (!ictx->idev) {
1991 dev_err(dev, "%s: input device setup failed\n", __func__);
1992 goto idev_setup_failed;
1993 }
1994
eaf2bcc9
DH		 1995 ictx->rdev = imon_init_rdev(ictx);
1996 if (!ictx->rdev) {
1997 dev_err(dev, "%s: rc device setup failed\n", __func__);
1998 goto rdev_setup_failed;
1999 }
2000
21677cfc
JW		 2001 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2002 usb_rcvintpipe(ictx->usbdev_intf0,
2003 ictx->rx_endpoint_intf0->bEndpointAddress),
2004 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2005 usb_rx_callback_intf0, ictx,
2006 ictx->rx_endpoint_intf0->bInterval);
2007
2008 ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL);
2009 if (ret) {
2010 err("%s: usb_submit_urb failed for intf0 (%d)",
2011 __func__, ret);
2012 goto urb_submit_failed;
2013 }
2014
2015 return ictx;
2016
2017urb_submit_failed:
eaf2bcc9
DH		 2018 ir_input_unregister(ictx->rdev);
2019rdev_setup_failed:
2020 input_unregister_device(ictx->idev);
21677cfc
JW		 2021idev_setup_failed:
2022find_endpoint_failed:
2023 mutex_unlock(&ictx->lock);
2024 usb_free_urb(tx_urb);
2025tx_urb_alloc_failed:
2026 usb_free_urb(rx_urb);
2027rx_urb_alloc_failed:
2028 kfree(ictx);
2029exit:
2030 dev_err(dev, "unable to initialize intf0, err %d\n", ret);
2031
2032 return NULL;
2033}
2034
2035static struct imon_context *imon_init_intf1(struct usb_interface *intf,
2036 struct imon_context *ictx)
2037{
2038 struct urb *rx_urb;
2039 struct usb_host_interface *iface_desc;
1f71baef 2040 int ret = -ENOMEM;
21677cfc
JW		 2041
2042 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2043 if (!rx_urb) {
2044 err("%s: usb_alloc_urb failed for IR urb", __func__);
21677cfc
JW		 2045 goto rx_urb_alloc_failed;
2046 }
2047
2048 mutex_lock(&ictx->lock);
2049
2050 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2051 init_timer(&ictx->ttimer);
2052 ictx->ttimer.data = (unsigned long)ictx;
2053 ictx->ttimer.function = imon_touch_display_timeout;
2054 }
2055
2056 ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf));
f789bf40 2057 ictx->dev_present_intf1 = true;
21677cfc
JW		 2058 ictx->rx_urb_intf1 = rx_urb;
2059
1f71baef 2060 ret = -ENODEV;
21677cfc
JW		 2061 iface_desc = intf->cur_altsetting;
2062 if (!imon_find_endpoints(ictx, iface_desc))
2063 goto find_endpoint_failed;
2064
2065 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2066 ictx->touch = imon_init_touch(ictx);
2067 if (!ictx->touch)
2068 goto touch_setup_failed;
2069 } else
2070 ictx->touch = NULL;
2071
2072 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2073 usb_rcvintpipe(ictx->usbdev_intf1,
2074 ictx->rx_endpoint_intf1->bEndpointAddress),
2075 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2076 usb_rx_callback_intf1, ictx,
2077 ictx->rx_endpoint_intf1->bInterval);
2078
2079 ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL);
2080
2081 if (ret) {
2082 err("%s: usb_submit_urb failed for intf1 (%d)",
2083 __func__, ret);
2084 goto urb_submit_failed;
2085 }
2086
2087 return ictx;
2088
2089urb_submit_failed:
20cd1959 2090 if (ictx->touch)
21677cfc 2091 input_unregister_device(ictx->touch);
21677cfc
JW		 2092touch_setup_failed:
2093find_endpoint_failed:
2094 mutex_unlock(&ictx->lock);
2095 usb_free_urb(rx_urb);
2096rx_urb_alloc_failed:
2097 dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret);
2098
2099 return NULL;
2100}
2101
2102/*
2103 * The 0x15c2:0xffdc device ID was used for umpteen different imon
2104 * devices, and all of them constantly spew interrupts, even when there
2105 * is no actual data to report. However, byte 6 of this buffer looks like
2106 * its unique across device variants, so we're trying to key off that to
2107 * figure out which display type (if any) and what IR protocol the device
6718e8ad
JW		 2108 * actually supports. These devices have their IR protocol hard-coded into
2109 * their firmware, they can't be changed on the fly like the newer hardware.
21677cfc
JW		 2110 */
2111static void imon_get_ffdc_type(struct imon_context *ictx)
2112{
2113 u8 ffdc_cfg_byte = ictx->usb_rx_buf[6];
2114 u8 detected_display_type = IMON_DISPLAY_TYPE_NONE;
6718e8ad 2115 u64 allowed_protos = IR_TYPE_OTHER;
21677cfc
JW		 2116
2117 switch (ffdc_cfg_byte) {
2118 /* iMON Knob, no display, iMON IR + vol knob */
2119 case 0x21:
2120 dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR");
2121 ictx->display_supported = false;
2122 break;
bbe4690f
JW		 2123 /* iMON 2.4G LT (usb stick), no display, iMON RF */
2124 case 0x4e:
2125 dev_info(ictx->dev, "0xffdc iMON 2.4G LT, iMON RF");
2126 ictx->display_supported = false;
2127 ictx->rf_device = true;
2128 break;
21677cfc
JW		 2129 /* iMON VFD, no IR (does have vol knob tho) */
2130 case 0x35:
2131 dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR");
2132 detected_display_type = IMON_DISPLAY_TYPE_VFD;
21677cfc
JW		 2133 break;
2134 /* iMON VFD, iMON IR */
2135 case 0x24:
2136 case 0x85:
2137 dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR");
2138 detected_display_type = IMON_DISPLAY_TYPE_VFD;
2139 break;
2140 /* iMON LCD, MCE IR */
49da8be5 2141 case 0x9e:
21677cfc
JW		 2142 case 0x9f:
2143 dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR");
2144 detected_display_type = IMON_DISPLAY_TYPE_LCD;
6718e8ad 2145 allowed_protos = IR_TYPE_RC6;
21677cfc
JW		 2146 break;
2147 default:
2148 dev_info(ictx->dev, "Unknown 0xffdc device, "
2149 "defaulting to VFD and iMON IR");
2150 detected_display_type = IMON_DISPLAY_TYPE_VFD;
2151 break;
2152 }
2153
6718e8ad 2154 printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte);
21677cfc
JW		 2155
2156 ictx->display_type = detected_display_type;
6718e8ad
JW		 2157 ictx->props->allowed_protos = allowed_protos;
2158 ictx->ir_type = allowed_protos;
21677cfc
JW		 2159}
2160
2161static void imon_set_display_type(struct imon_context *ictx,
2162 struct usb_interface *intf)
2163{
2164 u8 configured_display_type = IMON_DISPLAY_TYPE_VFD;
2165
2166 /*
2167 * Try to auto-detect the type of display if the user hasn't set
2168 * it by hand via the display_type modparam. Default is VFD.
2169 */
2170
2171 if (display_type == IMON_DISPLAY_TYPE_AUTO) {
2172 switch (ictx->product) {
2173 case 0xffdc:
2174 /* set in imon_get_ffdc_type() */
2175 configured_display_type = ictx->display_type;
2176 break;
2177 case 0x0034:
2178 case 0x0035:
2179 configured_display_type = IMON_DISPLAY_TYPE_VGA;
2180 break;
2181 case 0x0038:
2182 case 0x0039:
2183 case 0x0045:
2184 configured_display_type = IMON_DISPLAY_TYPE_LCD;
2185 break;
2186 case 0x003c:
2187 case 0x0041:
2188 case 0x0042:
2189 case 0x0043:
2190 configured_display_type = IMON_DISPLAY_TYPE_NONE;
2191 ictx->display_supported = false;
2192 break;
2193 case 0x0036:
2194 case 0x0044:
2195 default:
2196 configured_display_type = IMON_DISPLAY_TYPE_VFD;
2197 break;
2198 }
2199 } else {
2200 configured_display_type = display_type;
2201 if (display_type == IMON_DISPLAY_TYPE_NONE)
2202 ictx->display_supported = false;
2203 else
2204 ictx->display_supported = true;
2205 dev_info(ictx->dev, "%s: overriding display type to %d via "
2206 "modparam\n", __func__, display_type);
2207 }
2208
2209 ictx->display_type = configured_display_type;
2210}
2211
2212static void imon_init_display(struct imon_context *ictx,
2213 struct usb_interface *intf)
2214{
2215 int ret;
2216
2217 dev_dbg(ictx->dev, "Registering iMON display with sysfs\n");
2218
2219 /* set up sysfs entry for built-in clock */
2220 ret = sysfs_create_group(&intf->dev.kobj,
2221 &imon_display_attribute_group);
2222 if (ret)
2223 dev_err(ictx->dev, "Could not create display sysfs "
2224 "entries(%d)", ret);
2225
2226 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2227 ret = usb_register_dev(intf, &imon_lcd_class);
2228 else
2229 ret = usb_register_dev(intf, &imon_vfd_class);
2230 if (ret)
2231 /* Not a fatal error, so ignore */
2232 dev_info(ictx->dev, "could not get a minor number for "
2233 "display\n");
2234
2235}
2236
2237/**
2238 * Callback function for USB core API: Probe
2239 */
2240static int __devinit imon_probe(struct usb_interface *interface,
2241 const struct usb_device_id *id)
2242{
2243 struct usb_device *usbdev = NULL;
2244 struct usb_host_interface *iface_desc = NULL;
2245 struct usb_interface *first_if;
2246 struct device *dev = &interface->dev;
2247 int ifnum, code_length, sysfs_err;
2248 int ret = 0;
2249 struct imon_context *ictx = NULL;
2250 struct imon_context *first_if_ctx = NULL;
2251 u16 vendor, product;
2252 const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
2253 0x00, 0x00, 0x00, 0x88 };
2254
2255 code_length = BUF_CHUNK_SIZE * 8;
2256
2257 usbdev = usb_get_dev(interface_to_usbdev(interface));
2258 iface_desc = interface->cur_altsetting;
2259 ifnum = iface_desc->desc.bInterfaceNumber;
2260 vendor = le16_to_cpu(usbdev->descriptor.idVendor);
2261 product = le16_to_cpu(usbdev->descriptor.idProduct);
2262
2263 dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n",
2264 __func__, vendor, product, ifnum);
2265
2266 /* prevent races probing devices w/multiple interfaces */
2267 mutex_lock(&driver_lock);
2268
2269 first_if = usb_ifnum_to_if(usbdev, 0);
2270 first_if_ctx = (struct imon_context *)usb_get_intfdata(first_if);
2271
2272 if (ifnum == 0) {
2273 ictx = imon_init_intf0(interface);
2274 if (!ictx) {
2275 err("%s: failed to initialize context!\n", __func__);
2276 ret = -ENODEV;
2277 goto fail;
2278 }
2279
21677cfc
JW		 2280 } else {
2281 /* this is the secondary interface on the device */
2282 ictx = imon_init_intf1(interface, first_if_ctx);
2283 if (!ictx) {
2284 err("%s: failed to attach to context!\n", __func__);
2285 ret = -ENODEV;
2286 goto fail;
2287 }
2288
2289 }
2290
2291 usb_set_intfdata(interface, ictx);
2292
2293 if (ifnum == 0) {
2294 /* Enable front-panel buttons and/or knobs */
2295 memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet));
2296 ret = send_packet(ictx);
2297 /* Not fatal, but warn about it */
2298 if (ret)
2299 dev_info(dev, "failed to enable panel buttons "
2300 "and/or knobs\n");
2301
2302 if (product == 0xffdc)
2303 imon_get_ffdc_type(ictx);
21677cfc
JW		 2304
2305 imon_set_display_type(ictx, interface);
2306
bbe4690f
JW		 2307 if (product == 0xffdc && ictx->rf_device) {
2308 sysfs_err = sysfs_create_group(&interface->dev.kobj,
2309 &imon_rf_attribute_group);
2310 if (sysfs_err)
2311 err("%s: Could not create RF sysfs entries(%d)",
2312 __func__, sysfs_err);
2313 }
2314
21677cfc
JW		 2315 if (ictx->display_supported)
2316 imon_init_display(ictx, interface);
2317 }
2318
2319 /* set IR protocol/remote type */
6718e8ad
JW		 2320 ret = imon_ir_change_protocol(ictx, ictx->ir_type);
2321 if (ret) {
2322 dev_warn(dev, "%s: failed to set IR protocol, falling back "
2323 "to standard iMON protocol mode\n", __func__);
2324 ictx->ir_type = IR_TYPE_OTHER;
2325 }
21677cfc
JW		 2326
2327 dev_info(dev, "iMON device (%04x:%04x, intf%d) on "
2328 "usb<%d:%d> initialized\n", vendor, product, ifnum,
2329 usbdev->bus->busnum, usbdev->devnum);
2330
2331 mutex_unlock(&ictx->lock);
2332 mutex_unlock(&driver_lock);
2333
2334 return 0;
2335
2336fail:
2337 mutex_unlock(&driver_lock);
2338 dev_err(dev, "unable to register, err %d\n", ret);
2339
2340 return ret;
2341}
2342
2343/**
2344 * Callback function for USB core API: disconnect
2345 */
2346static void __devexit imon_disconnect(struct usb_interface *interface)
2347{
2348 struct imon_context *ictx;
2349 struct device *dev;
2350 int ifnum;
2351
2352 /* prevent races with multi-interface device probing and display_open */
2353 mutex_lock(&driver_lock);
2354
2355 ictx = usb_get_intfdata(interface);
2356 dev = ictx->dev;
2357 ifnum = interface->cur_altsetting->desc.bInterfaceNumber;
2358
2359 mutex_lock(&ictx->lock);
2360
2361 /*
2362 * sysfs_remove_group is safe to call even if sysfs_create_group
2363 * hasn't been called
2364 */
2365 sysfs_remove_group(&interface->dev.kobj,
2366 &imon_display_attribute_group);
2367 sysfs_remove_group(&interface->dev.kobj,
2368 &imon_rf_attribute_group);
2369
2370 usb_set_intfdata(interface, NULL);
2371
2372 /* Abort ongoing write */
2373 if (ictx->tx.busy) {
2374 usb_kill_urb(ictx->tx_urb);
2375 complete_all(&ictx->tx.finished);
2376 }
2377
2378 if (ifnum == 0) {
f789bf40 2379 ictx->dev_present_intf0 = false;
21677cfc 2380 usb_kill_urb(ictx->rx_urb_intf0);
eaf2bcc9
DH		 2381 input_unregister_device(ictx->idev);
2382 ir_input_unregister(ictx->rdev);
21677cfc
JW		 2383 if (ictx->display_supported) {
2384 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2385 usb_deregister_dev(interface, &imon_lcd_class);
2386 else
2387 usb_deregister_dev(interface, &imon_vfd_class);
2388 }
2389 } else {
f789bf40 2390 ictx->dev_present_intf1 = false;
21677cfc
JW		 2391 usb_kill_urb(ictx->rx_urb_intf1);
2392 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2393 input_unregister_device(ictx->touch);
2394 }
2395
2396 if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) {
2397 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2398 del_timer_sync(&ictx->ttimer);
2399 mutex_unlock(&ictx->lock);
2400 if (!ictx->display_isopen)
2401 free_imon_context(ictx);
eaf2bcc9 2402 } else
21677cfc 2403 mutex_unlock(&ictx->lock);
21677cfc
JW		 2404
2405 mutex_unlock(&driver_lock);
2406
2407 dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n",
2408 __func__, ifnum);
2409}
2410
2411static int imon_suspend(struct usb_interface *intf, pm_message_t message)
2412{
2413 struct imon_context *ictx = usb_get_intfdata(intf);
2414 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2415
2416 if (ifnum == 0)
2417 usb_kill_urb(ictx->rx_urb_intf0);
2418 else
2419 usb_kill_urb(ictx->rx_urb_intf1);
2420
2421 return 0;
2422}
2423
2424static int imon_resume(struct usb_interface *intf)
2425{
2426 int rc = 0;
2427 struct imon_context *ictx = usb_get_intfdata(intf);
2428 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2429
2430 if (ifnum == 0) {
2431 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2432 usb_rcvintpipe(ictx->usbdev_intf0,
2433 ictx->rx_endpoint_intf0->bEndpointAddress),
2434 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2435 usb_rx_callback_intf0, ictx,
2436 ictx->rx_endpoint_intf0->bInterval);
2437
2438 rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
2439
2440 } else {
2441 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2442 usb_rcvintpipe(ictx->usbdev_intf1,
2443 ictx->rx_endpoint_intf1->bEndpointAddress),
2444 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2445 usb_rx_callback_intf1, ictx,
2446 ictx->rx_endpoint_intf1->bInterval);
2447
2448 rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
2449 }
2450
2451 return rc;
2452}
2453
2454static int __init imon_init(void)
2455{
2456 int rc;
2457
2458 rc = usb_register(&imon_driver);
2459 if (rc) {
2460 err("%s: usb register failed(%d)", __func__, rc);
2461 rc = -ENODEV;
2462 }
2463
2464 return rc;
2465}
2466
2467static void __exit imon_exit(void)
2468{
2469 usb_deregister(&imon_driver);
2470}
2471
2472module_init(imon_init);
2473module_exit(imon_exit);
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