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[media] drivers/media/video/bt8xx: Adjust confusing if indentation
[linux-block.git] / drivers / media / IR / imon.c
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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 },
04292fc0
JW		 295 /* 0xffdc iMON MCE VFD */
296 { 0x00010000ffffffeell, KEY_VOLUMEUP },
297 { 0x01000000ffffffeell, KEY_VOLUMEDOWN },
21677cfc 298 /* iMON Knob values */
1f71baef
MCC		 299 { 0x000100ffffffffeell, KEY_VOLUMEUP },
300 { 0x010000ffffffffeell, KEY_VOLUMEDOWN },
301 { 0x000008ffffffffeell, KEY_MUTE },
21677cfc
JW		 302};
303
304/* to prevent races between open() and disconnect(), probing, etc */
305static DEFINE_MUTEX(driver_lock);
306
307/* Module bookkeeping bits */
308MODULE_AUTHOR(MOD_AUTHOR);
309MODULE_DESCRIPTION(MOD_DESC);
310MODULE_VERSION(MOD_VERSION);
311MODULE_LICENSE("GPL");
312MODULE_DEVICE_TABLE(usb, imon_usb_id_table);
313
314static bool debug;
315module_param(debug, bool, S_IRUGO | S_IWUSR);
316MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes(default: no)");
317
318/* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */
319static int display_type;
320module_param(display_type, int, S_IRUGO);
321MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, "
322 "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)");
323
6718e8ad
JW		 324static int pad_stabilize = 1;
325module_param(pad_stabilize, int, S_IRUGO | S_IWUSR);
326MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD "
327 "presses in arrow key mode. 0=disable, 1=enable (default).");
21677cfc
JW		 328
329/*
330 * In certain use cases, mouse mode isn't really helpful, and could actually
331 * cause confusion, so allow disabling it when the IR device is open.
332 */
333static bool nomouse;
334module_param(nomouse, bool, S_IRUGO | S_IWUSR);
335MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is "
336 "open. 0=don't disable, 1=disable. (default: don't disable)");
337
338/* threshold at which a pad push registers as an arrow key in kbd mode */
339static int pad_thresh;
340module_param(pad_thresh, int, S_IRUGO | S_IWUSR);
341MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an "
342 "arrow key in kbd mode (default: 28)");
343
344
345static void free_imon_context(struct imon_context *ictx)
346{
347 struct device *dev = ictx->dev;
348
349 usb_free_urb(ictx->tx_urb);
350 usb_free_urb(ictx->rx_urb_intf0);
351 usb_free_urb(ictx->rx_urb_intf1);
352 kfree(ictx);
353
354 dev_dbg(dev, "%s: iMON context freed\n", __func__);
355}
356
357/**
358 * Called when the Display device (e.g. /dev/lcd0)
359 * is opened by the application.
360 */
361static int display_open(struct inode *inode, struct file *file)
362{
363 struct usb_interface *interface;
364 struct imon_context *ictx = NULL;
365 int subminor;
366 int retval = 0;
367
368 /* prevent races with disconnect */
369 mutex_lock(&driver_lock);
370
371 subminor = iminor(inode);
372 interface = usb_find_interface(&imon_driver, subminor);
373 if (!interface) {
374 err("%s: could not find interface for minor %d",
375 __func__, subminor);
376 retval = -ENODEV;
377 goto exit;
378 }
379 ictx = usb_get_intfdata(interface);
380
381 if (!ictx) {
382 err("%s: no context found for minor %d", __func__, subminor);
383 retval = -ENODEV;
384 goto exit;
385 }
386
387 mutex_lock(&ictx->lock);
388
389 if (!ictx->display_supported) {
390 err("%s: display not supported by device", __func__);
391 retval = -ENODEV;
392 } else if (ictx->display_isopen) {
393 err("%s: display port is already open", __func__);
394 retval = -EBUSY;
395 } else {
f789bf40 396 ictx->display_isopen = true;
21677cfc
JW		 397 file->private_data = ictx;
398 dev_dbg(ictx->dev, "display port opened\n");
399 }
400
401 mutex_unlock(&ictx->lock);
402
403exit:
404 mutex_unlock(&driver_lock);
405 return retval;
406}
407
408/**
409 * Called when the display device (e.g. /dev/lcd0)
410 * is closed by the application.
411 */
412static int display_close(struct inode *inode, struct file *file)
413{
414 struct imon_context *ictx = NULL;
415 int retval = 0;
416
abf84383 417 ictx = file->private_data;
21677cfc
JW		 418
419 if (!ictx) {
420 err("%s: no context for device", __func__);
421 return -ENODEV;
422 }
423
424 mutex_lock(&ictx->lock);
425
426 if (!ictx->display_supported) {
427 err("%s: display not supported by device", __func__);
428 retval = -ENODEV;
429 } else if (!ictx->display_isopen) {
430 err("%s: display is not open", __func__);
431 retval = -EIO;
432 } else {
f789bf40 433 ictx->display_isopen = false;
21677cfc
JW		 434 dev_dbg(ictx->dev, "display port closed\n");
435 if (!ictx->dev_present_intf0) {
436 /*
437 * Device disconnected before close and IR port is not
438 * open. If IR port is open, context will be deleted by
439 * ir_close.
440 */
441 mutex_unlock(&ictx->lock);
442 free_imon_context(ictx);
443 return retval;
444 }
445 }
446
447 mutex_unlock(&ictx->lock);
448 return retval;
449}
450
451/**
452 * Sends a packet to the device -- this function must be called
453 * with ictx->lock held.
454 */
455static int send_packet(struct imon_context *ictx)
456{
457 unsigned int pipe;
458 unsigned long timeout;
459 int interval = 0;
460 int retval = 0;
461 struct usb_ctrlrequest *control_req = NULL;
462
463 /* Check if we need to use control or interrupt urb */
464 if (!ictx->tx_control) {
465 pipe = usb_sndintpipe(ictx->usbdev_intf0,
466 ictx->tx_endpoint->bEndpointAddress);
467 interval = ictx->tx_endpoint->bInterval;
468
469 usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe,
470 ictx->usb_tx_buf,
471 sizeof(ictx->usb_tx_buf),
472 usb_tx_callback, ictx, interval);
473
474 ictx->tx_urb->actual_length = 0;
475 } else {
476 /* fill request into kmalloc'ed space: */
477 control_req = kmalloc(sizeof(struct usb_ctrlrequest),
478 GFP_KERNEL);
479 if (control_req == NULL)
480 return -ENOMEM;
481
482 /* setup packet is '21 09 0200 0001 0008' */
483 control_req->bRequestType = 0x21;
484 control_req->bRequest = 0x09;
485 control_req->wValue = cpu_to_le16(0x0200);
486 control_req->wIndex = cpu_to_le16(0x0001);
487 control_req->wLength = cpu_to_le16(0x0008);
488
489 /* control pipe is endpoint 0x00 */
490 pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0);
491
492 /* build the control urb */
493 usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0,
494 pipe, (unsigned char *)control_req,
495 ictx->usb_tx_buf,
496 sizeof(ictx->usb_tx_buf),
497 usb_tx_callback, ictx);
498 ictx->tx_urb->actual_length = 0;
499 }
500
501 init_completion(&ictx->tx.finished);
f789bf40 502 ictx->tx.busy = true;
21677cfc
JW		 503 smp_rmb(); /* ensure later readers know we're busy */
504
505 retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL);
506 if (retval) {
f789bf40 507 ictx->tx.busy = false;
21677cfc
JW		 508 smp_rmb(); /* ensure later readers know we're not busy */
509 err("%s: error submitting urb(%d)", __func__, retval);
510 } else {
511 /* Wait for transmission to complete (or abort) */
512 mutex_unlock(&ictx->lock);
513 retval = wait_for_completion_interruptible(
514 &ictx->tx.finished);
515 if (retval)
516 err("%s: task interrupted", __func__);
517 mutex_lock(&ictx->lock);
518
519 retval = ictx->tx.status;
520 if (retval)
521 err("%s: packet tx failed (%d)", __func__, retval);
522 }
523
524 kfree(control_req);
525
526 /*
527 * Induce a mandatory 5ms delay before returning, as otherwise,
528 * send_packet can get called so rapidly as to overwhelm the device,
529 * particularly on faster systems and/or those with quirky usb.
530 */
531 timeout = msecs_to_jiffies(5);
532 set_current_state(TASK_UNINTERRUPTIBLE);
533 schedule_timeout(timeout);
534
535 return retval;
536}
537
538/**
539 * Sends an associate packet to the iMON 2.4G.
540 *
541 * This might not be such a good idea, since it has an id collision with
542 * some versions of the "IR & VFD" combo. The only way to determine if it
543 * is an RF version is to look at the product description string. (Which
544 * we currently do not fetch).
545 */
546static int send_associate_24g(struct imon_context *ictx)
547{
548 int retval;
549 const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00,
550 0x00, 0x00, 0x00, 0x20 };
551
552 if (!ictx) {
553 err("%s: no context for device", __func__);
554 return -ENODEV;
555 }
556
557 if (!ictx->dev_present_intf0) {
558 err("%s: no iMON device present", __func__);
559 return -ENODEV;
560 }
561
562 memcpy(ictx->usb_tx_buf, packet, sizeof(packet));
563 retval = send_packet(ictx);
564
565 return retval;
566}
567
568/**
569 * Sends packets to setup and show clock on iMON display
570 *
571 * Arguments: year - last 2 digits of year, month - 1..12,
572 * day - 1..31, dow - day of the week (0-Sun...6-Sat),
573 * hour - 0..23, minute - 0..59, second - 0..59
574 */
575static int send_set_imon_clock(struct imon_context *ictx,
576 unsigned int year, unsigned int month,
577 unsigned int day, unsigned int dow,
578 unsigned int hour, unsigned int minute,
579 unsigned int second)
580{
581 unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8];
582 int retval = 0;
583 int i;
584
585 if (!ictx) {
586 err("%s: no context for device", __func__);
587 return -ENODEV;
588 }
589
590 switch (ictx->display_type) {
591 case IMON_DISPLAY_TYPE_LCD:
592 clock_enable_pkt[0][0] = 0x80;
593 clock_enable_pkt[0][1] = year;
594 clock_enable_pkt[0][2] = month-1;
595 clock_enable_pkt[0][3] = day;
596 clock_enable_pkt[0][4] = hour;
597 clock_enable_pkt[0][5] = minute;
598 clock_enable_pkt[0][6] = second;
599
600 clock_enable_pkt[1][0] = 0x80;
601 clock_enable_pkt[1][1] = 0;
602 clock_enable_pkt[1][2] = 0;
603 clock_enable_pkt[1][3] = 0;
604 clock_enable_pkt[1][4] = 0;
605 clock_enable_pkt[1][5] = 0;
606 clock_enable_pkt[1][6] = 0;
607
608 if (ictx->product == 0xffdc) {
609 clock_enable_pkt[0][7] = 0x50;
610 clock_enable_pkt[1][7] = 0x51;
611 } else {
612 clock_enable_pkt[0][7] = 0x88;
613 clock_enable_pkt[1][7] = 0x8a;
614 }
615
616 break;
617
618 case IMON_DISPLAY_TYPE_VFD:
619 clock_enable_pkt[0][0] = year;
620 clock_enable_pkt[0][1] = month-1;
621 clock_enable_pkt[0][2] = day;
622 clock_enable_pkt[0][3] = dow;
623 clock_enable_pkt[0][4] = hour;
624 clock_enable_pkt[0][5] = minute;
625 clock_enable_pkt[0][6] = second;
626 clock_enable_pkt[0][7] = 0x40;
627
628 clock_enable_pkt[1][0] = 0;
629 clock_enable_pkt[1][1] = 0;
630 clock_enable_pkt[1][2] = 1;
631 clock_enable_pkt[1][3] = 0;
632 clock_enable_pkt[1][4] = 0;
633 clock_enable_pkt[1][5] = 0;
634 clock_enable_pkt[1][6] = 0;
635 clock_enable_pkt[1][7] = 0x42;
636
637 break;
638
639 default:
640 return -ENODEV;
641 }
642
643 for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) {
644 memcpy(ictx->usb_tx_buf, clock_enable_pkt[i], 8);
645 retval = send_packet(ictx);
646 if (retval) {
647 err("%s: send_packet failed for packet %d",
648 __func__, i);
649 break;
650 }
651 }
652
653 return retval;
654}
655
656/**
657 * These are the sysfs functions to handle the association on the iMON 2.4G LT.
658 */
659static ssize_t show_associate_remote(struct device *d,
660 struct device_attribute *attr,
661 char *buf)
662{
663 struct imon_context *ictx = dev_get_drvdata(d);
664
665 if (!ictx)
666 return -ENODEV;
667
668 mutex_lock(&ictx->lock);
669 if (ictx->rf_isassociating)
670 strcpy(buf, "associating\n");
671 else
672 strcpy(buf, "closed\n");
673
674 dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for "
675 "instructions on how to associate your iMON 2.4G DT/LT "
676 "remote\n");
677 mutex_unlock(&ictx->lock);
678 return strlen(buf);
679}
680
681static ssize_t store_associate_remote(struct device *d,
682 struct device_attribute *attr,
683 const char *buf, size_t count)
684{
685 struct imon_context *ictx;
686
687 ictx = dev_get_drvdata(d);
688
689 if (!ictx)
690 return -ENODEV;
691
692 mutex_lock(&ictx->lock);
f789bf40 693 ictx->rf_isassociating = true;
21677cfc
JW		 694 send_associate_24g(ictx);
695 mutex_unlock(&ictx->lock);
696
697 return count;
698}
699
700/**
701 * sysfs functions to control internal imon clock
702 */
703static ssize_t show_imon_clock(struct device *d,
704 struct device_attribute *attr, char *buf)
705{
706 struct imon_context *ictx = dev_get_drvdata(d);
707 size_t len;
708
709 if (!ictx)
710 return -ENODEV;
711
712 mutex_lock(&ictx->lock);
713
714 if (!ictx->display_supported) {
715 len = snprintf(buf, PAGE_SIZE, "Not supported.");
716 } else {
717 len = snprintf(buf, PAGE_SIZE,
718 "To set the clock on your iMON display:\n"
719 "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n"
720 "%s", ictx->display_isopen ?
721 "\nNOTE: imon device must be closed\n" : "");
722 }
723
724 mutex_unlock(&ictx->lock);
725
726 return len;
727}
728
729static ssize_t store_imon_clock(struct device *d,
730 struct device_attribute *attr,
731 const char *buf, size_t count)
732{
733 struct imon_context *ictx = dev_get_drvdata(d);
734 ssize_t retval;
735 unsigned int year, month, day, dow, hour, minute, second;
736
737 if (!ictx)
738 return -ENODEV;
739
740 mutex_lock(&ictx->lock);
741
742 if (!ictx->display_supported) {
743 retval = -ENODEV;
744 goto exit;
745 } else if (ictx->display_isopen) {
746 retval = -EBUSY;
747 goto exit;
748 }
749
750 if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow,
751 &hour, &minute, &second) != 7) {
752 retval = -EINVAL;
753 goto exit;
754 }
755
756 if ((month < 1 || month > 12) ||
757 (day < 1 || day > 31) || (dow > 6) ||
758 (hour > 23) || (minute > 59) || (second > 59)) {
759 retval = -EINVAL;
760 goto exit;
761 }
762
763 retval = send_set_imon_clock(ictx, year, month, day, dow,
764 hour, minute, second);
765 if (retval)
766 goto exit;
767
768 retval = count;
769exit:
770 mutex_unlock(&ictx->lock);
771
772 return retval;
773}
774
775
776static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock,
777 store_imon_clock);
778
779static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote,
780 store_associate_remote);
781
782static struct attribute *imon_display_sysfs_entries[] = {
783 &dev_attr_imon_clock.attr,
784 NULL
785};
786
787static struct attribute_group imon_display_attribute_group = {
788 .attrs = imon_display_sysfs_entries
789};
790
791static struct attribute *imon_rf_sysfs_entries[] = {
792 &dev_attr_associate_remote.attr,
793 NULL
794};
795
796static struct attribute_group imon_rf_attribute_group = {
797 .attrs = imon_rf_sysfs_entries
798};
799
800/**
801 * Writes data to the VFD. The iMON VFD is 2x16 characters
802 * and requires data in 5 consecutive USB interrupt packets,
803 * each packet but the last carrying 7 bytes.
804 *
805 * I don't know if the VFD board supports features such as
806 * scrolling, clearing rows, blanking, etc. so at
807 * the caller must provide a full screen of data. If fewer
808 * than 32 bytes are provided spaces will be appended to
809 * generate a full screen.
810 */
811static ssize_t vfd_write(struct file *file, const char *buf,
812 size_t n_bytes, loff_t *pos)
813{
814 int i;
815 int offset;
816 int seq;
817 int retval = 0;
818 struct imon_context *ictx;
819 const unsigned char vfd_packet6[] = {
820 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
821
abf84383 822 ictx = file->private_data;
21677cfc
JW		 823 if (!ictx) {
824 err("%s: no context for device", __func__);
825 return -ENODEV;
826 }
827
828 mutex_lock(&ictx->lock);
829
830 if (!ictx->dev_present_intf0) {
831 err("%s: no iMON device present", __func__);
832 retval = -ENODEV;
833 goto exit;
834 }
835
836 if (n_bytes <= 0 || n_bytes > 32) {
837 err("%s: invalid payload size", __func__);
838 retval = -EINVAL;
839 goto exit;
840 }
841
842 if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) {
843 retval = -EFAULT;
844 goto exit;
845 }
846
847 /* Pad with spaces */
848 for (i = n_bytes; i < 32; ++i)
849 ictx->tx.data_buf[i] = ' ';
850
851 for (i = 32; i < 35; ++i)
852 ictx->tx.data_buf[i] = 0xFF;
853
854 offset = 0;
855 seq = 0;
856
857 do {
858 memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7);
859 ictx->usb_tx_buf[7] = (unsigned char) seq;
860
861 retval = send_packet(ictx);
862 if (retval) {
863 err("%s: send packet failed for packet #%d",
864 __func__, seq/2);
865 goto exit;
866 } else {
867 seq += 2;
868 offset += 7;
869 }
870
871 } while (offset < 35);
872
873 /* Send packet #6 */
874 memcpy(ictx->usb_tx_buf, &vfd_packet6, sizeof(vfd_packet6));
875 ictx->usb_tx_buf[7] = (unsigned char) seq;
876 retval = send_packet(ictx);
877 if (retval)
878 err("%s: send packet failed for packet #%d",
879 __func__, seq / 2);
880
881exit:
882 mutex_unlock(&ictx->lock);
883
884 return (!retval) ? n_bytes : retval;
885}
886
887/**
888 * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte
889 * packets. We accept data as 16 hexadecimal digits, followed by a
890 * newline (to make it easy to drive the device from a command-line
891 * -- even though the actual binary data is a bit complicated).
892 *
893 * The device itself is not a "traditional" text-mode display. It's
894 * actually a 16x96 pixel bitmap display. That means if you want to
895 * display text, you've got to have your own "font" and translate the
896 * text into bitmaps for display. This is really flexible (you can
897 * display whatever diacritics you need, and so on), but it's also
898 * a lot more complicated than most LCDs...
899 */
900static ssize_t lcd_write(struct file *file, const char *buf,
901 size_t n_bytes, loff_t *pos)
902{
903 int retval = 0;
904 struct imon_context *ictx;
905
abf84383 906 ictx = file->private_data;
21677cfc
JW		 907 if (!ictx) {
908 err("%s: no context for device", __func__);
909 return -ENODEV;
910 }
911
912 mutex_lock(&ictx->lock);
913
914 if (!ictx->display_supported) {
915 err("%s: no iMON display present", __func__);
916 retval = -ENODEV;
917 goto exit;
918 }
919
920 if (n_bytes != 8) {
921 err("%s: invalid payload size: %d (expecting 8)",
922 __func__, (int) n_bytes);
923 retval = -EINVAL;
924 goto exit;
925 }
926
927 if (copy_from_user(ictx->usb_tx_buf, buf, 8)) {
928 retval = -EFAULT;
929 goto exit;
930 }
931
932 retval = send_packet(ictx);
933 if (retval) {
934 err("%s: send packet failed!", __func__);
935 goto exit;
936 } else {
937 dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n",
938 __func__, (int) n_bytes);
939 }
940exit:
941 mutex_unlock(&ictx->lock);
942 return (!retval) ? n_bytes : retval;
943}
944
945/**
946 * Callback function for USB core API: transmit data
947 */
948static void usb_tx_callback(struct urb *urb)
949{
950 struct imon_context *ictx;
951
952 if (!urb)
953 return;
954 ictx = (struct imon_context *)urb->context;
955 if (!ictx)
956 return;
957
958 ictx->tx.status = urb->status;
959
960 /* notify waiters that write has finished */
f789bf40 961 ictx->tx.busy = false;
21677cfc
JW		 962 smp_rmb(); /* ensure later readers know we're not busy */
963 complete(&ictx->tx.finished);
964}
965
21677cfc
JW		 966/**
967 * report touchscreen input
968 */
969static void imon_touch_display_timeout(unsigned long data)
970{
971 struct imon_context *ictx = (struct imon_context *)data;
972
f03900d6 973 if (ictx->display_type != IMON_DISPLAY_TYPE_VGA)
21677cfc
JW		 974 return;
975
976 input_report_abs(ictx->touch, ABS_X, ictx->touch_x);
977 input_report_abs(ictx->touch, ABS_Y, ictx->touch_y);
978 input_report_key(ictx->touch, BTN_TOUCH, 0x00);
979 input_sync(ictx->touch);
980}
981
982/**
983 * iMON IR receivers support two different signal sets -- those used by
984 * the iMON remotes, and those used by the Windows MCE remotes (which is
985 * really just RC-6), but only one or the other at a time, as the signals
986 * are decoded onboard the receiver.
987 */
6718e8ad 988int imon_ir_change_protocol(void *priv, u64 ir_type)
21677cfc
JW		 989{
990 int retval;
6718e8ad 991 struct imon_context *ictx = priv;
21677cfc 992 struct device *dev = ictx->dev;
6718e8ad 993 bool pad_mouse;
21677cfc
JW		 994 unsigned char ir_proto_packet[] = {
995 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 };
996
666a9ed8 997 if (ir_type && !(ir_type & ictx->props->allowed_protos))
21677cfc
JW		 998 dev_warn(dev, "Looks like you're trying to use an IR protocol "
999 "this device does not support\n");
1000
6718e8ad
JW		 1001 switch (ir_type) {
1002 case IR_TYPE_RC6:
21677cfc
JW		 1003 dev_dbg(dev, "Configuring IR receiver for MCE protocol\n");
1004 ir_proto_packet[0] = 0x01;
6718e8ad 1005 pad_mouse = false;
21677cfc 1006 break;
6718e8ad
JW		 1007 case IR_TYPE_UNKNOWN:
1008 case IR_TYPE_OTHER:
666a9ed8
JW		 1009 dev_dbg(dev, "Configuring IR receiver for iMON protocol\n");
1010 if (pad_stabilize)
6718e8ad 1011 pad_mouse = true;
666a9ed8
JW		 1012 else {
1013 dev_dbg(dev, "PAD stabilize functionality disabled\n");
6718e8ad
JW		 1014 pad_mouse = false;
1015 }
21677cfc 1016 /* ir_proto_packet[0] = 0x00; // already the default */
6718e8ad 1017 ir_type = IR_TYPE_OTHER;
21677cfc
JW		 1018 break;
1019 default:
6718e8ad 1020 dev_warn(dev, "Unsupported IR protocol specified, overriding "
666a9ed8
JW		 1021 "to iMON IR protocol\n");
1022 if (pad_stabilize)
6718e8ad 1023 pad_mouse = true;
666a9ed8
JW		 1024 else {
1025 dev_dbg(dev, "PAD stabilize functionality disabled\n");
6718e8ad
JW		 1026 pad_mouse = false;
1027 }
1028 /* ir_proto_packet[0] = 0x00; // already the default */
1029 ir_type = IR_TYPE_OTHER;
21677cfc
JW		 1030 break;
1031 }
1032
1033 memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet));
1034
1035 retval = send_packet(ictx);
6718e8ad
JW		 1036 if (retval)
1037 goto out;
1038
1039 ictx->ir_type = ir_type;
1040 ictx->pad_mouse = pad_mouse;
1041
1042out:
1043 return retval;
21677cfc
JW		 1044}
1045
1046static inline int tv2int(const struct timeval *a, const struct timeval *b)
1047{
1048 int usecs = 0;
1049 int sec = 0;
1050
1051 if (b->tv_usec > a->tv_usec) {
1052 usecs = 1000000;
1053 sec--;
1054 }
1055
1056 usecs += a->tv_usec - b->tv_usec;
1057
1058 sec += a->tv_sec - b->tv_sec;
1059 sec *= 1000;
1060 usecs /= 1000;
1061 sec += usecs;
1062
1063 if (sec < 0)
1064 sec = 1000;
1065
1066 return sec;
1067}
1068
1069/**
1070 * The directional pad behaves a bit differently, depending on whether this is
1071 * one of the older ffdc devices or a newer device. Newer devices appear to
1072 * have a higher resolution matrix for more precise mouse movement, but it
1073 * makes things overly sensitive in keyboard mode, so we do some interesting
1074 * contortions to make it less touchy. Older devices run through the same
1075 * routine with shorter timeout and a smaller threshold.
1076 */
1077static int stabilize(int a, int b, u16 timeout, u16 threshold)
1078{
1079 struct timeval ct;
1080 static struct timeval prev_time = {0, 0};
1081 static struct timeval hit_time = {0, 0};
1082 static int x, y, prev_result, hits;
1083 int result = 0;
1084 int msec, msec_hit;
1085
1086 do_gettimeofday(&ct);
1087 msec = tv2int(&ct, &prev_time);
1088 msec_hit = tv2int(&ct, &hit_time);
1089
1090 if (msec > 100) {
1091 x = 0;
1092 y = 0;
1093 hits = 0;
1094 }
1095
1096 x += a;
1097 y += b;
1098
1099 prev_time = ct;
1100
1101 if (abs(x) > threshold || abs(y) > threshold) {
1102 if (abs(y) > abs(x))
1103 result = (y > 0) ? 0x7F : 0x80;
1104 else
1105 result = (x > 0) ? 0x7F00 : 0x8000;
1106
1107 x = 0;
1108 y = 0;
1109
1110 if (result == prev_result) {
1111 hits++;
1112
1113 if (hits > 3) {
1114 switch (result) {
1115 case 0x7F:
1116 y = 17 * threshold / 30;
1117 break;
1118 case 0x80:
1119 y -= 17 * threshold / 30;
1120 break;
1121 case 0x7F00:
1122 x = 17 * threshold / 30;
1123 break;
1124 case 0x8000:
1125 x -= 17 * threshold / 30;
1126 break;
1127 }
1128 }
1129
1130 if (hits == 2 && msec_hit < timeout) {
1131 result = 0;
1132 hits = 1;
1133 }
1134 } else {
1135 prev_result = result;
1136 hits = 1;
1137 hit_time = ct;
1138 }
1139 }
1140
1141 return result;
1142}
1143
eaf2bcc9 1144static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 scancode)
21677cfc 1145{
21677cfc
JW		 1146 u32 keycode;
1147 u32 release;
1148 bool is_release_code = false;
1149
1150 /* Look for the initial press of a button */
eaf2bcc9
DH		 1151 keycode = ir_g_keycode_from_table(ictx->rdev, scancode);
1152 ictx->rc_toggle = 0x0;
1153 ictx->rc_scancode = scancode;
21677cfc
JW		 1154
1155 /* Look for the release of a button */
1156 if (keycode == KEY_RESERVED) {
1157 release = scancode & ~0x4000;
eaf2bcc9 1158 keycode = ir_g_keycode_from_table(ictx->rdev, release);
21677cfc
JW		 1159 if (keycode != KEY_RESERVED)
1160 is_release_code = true;
1161 }
1162
1163 ictx->release_code = is_release_code;
1164
1165 return keycode;
1166}
1167
eaf2bcc9 1168static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 scancode)
21677cfc 1169{
21677cfc
JW		 1170 u32 keycode;
1171
1172#define MCE_KEY_MASK 0x7000
1173#define MCE_TOGGLE_BIT 0x8000
1174
1175 /*
1176 * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx
1177 * (the toggle bit flipping between alternating key presses), while
1178 * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep
1179 * the table trim, we always or in the bits to look up 0x8000ff4xx,
1180 * but we can't or them into all codes, as some keys are decoded in
1181 * a different way w/o the same use of the toggle bit...
1182 */
eaf2bcc9 1183 if (scancode & 0x80000000)
21677cfc
JW		 1184 scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT;
1185
eaf2bcc9
DH		 1186 ictx->rc_scancode = scancode;
1187 keycode = ir_g_keycode_from_table(ictx->rdev, scancode);
1188
1189 /* not used in mce mode, but make sure we know its false */
1190 ictx->release_code = false;
21677cfc
JW		 1191
1192 return keycode;
1193}
1194
eaf2bcc9 1195static u32 imon_panel_key_lookup(u64 code)
21677cfc
JW		 1196{
1197 int i;
083e4721 1198 u32 keycode = KEY_RESERVED;
21677cfc 1199
083e4721
JW		 1200 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
1201 if (imon_panel_key_table[i].hw_code == (code | 0xffee)) {
1202 keycode = imon_panel_key_table[i].keycode;
21677cfc 1203 break;
083e4721
JW		 1204 }
1205 }
21677cfc
JW		 1206
1207 return keycode;
1208}
1209
1210static bool imon_mouse_event(struct imon_context *ictx,
1211 unsigned char *buf, int len)
1212{
1213 char rel_x = 0x00, rel_y = 0x00;
1214 u8 right_shift = 1;
f789bf40 1215 bool mouse_input = true;
21677cfc 1216 int dir = 0;
693508df
JW		 1217 unsigned long flags;
1218
1219 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1220
1221 /* newer iMON device PAD or mouse button */
1222 if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) {
1223 rel_x = buf[2];
1224 rel_y = buf[3];
1225 right_shift = 1;
1226 /* 0xffdc iMON PAD or mouse button input */
1227 } else if (ictx->product == 0xffdc && (buf[0] & 0x40) &&
1228 !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) {
1229 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1230 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1231 if (buf[0] & 0x02)
1232 rel_x |= ~0x0f;
1233 rel_x = rel_x + rel_x / 2;
1234 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1235 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1236 if (buf[0] & 0x01)
1237 rel_y |= ~0x0f;
1238 rel_y = rel_y + rel_y / 2;
1239 right_shift = 2;
1240 /* some ffdc devices decode mouse buttons differently... */
1241 } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) {
1242 right_shift = 2;
1243 /* ch+/- buttons, which we use for an emulated scroll wheel */
1244 } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) {
1245 dir = 1;
1246 } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) {
1247 dir = -1;
1248 } else
f789bf40 1249 mouse_input = false;
21677cfc 1250
693508df
JW		 1251 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1252
21677cfc
JW		 1253 if (mouse_input) {
1254 dev_dbg(ictx->dev, "sending mouse data via input subsystem\n");
1255
1256 if (dir) {
1257 input_report_rel(ictx->idev, REL_WHEEL, dir);
1258 } else if (rel_x || rel_y) {
1259 input_report_rel(ictx->idev, REL_X, rel_x);
1260 input_report_rel(ictx->idev, REL_Y, rel_y);
1261 } else {
1262 input_report_key(ictx->idev, BTN_LEFT, buf[1] & 0x1);
1263 input_report_key(ictx->idev, BTN_RIGHT,
1264 buf[1] >> right_shift & 0x1);
1265 }
1266 input_sync(ictx->idev);
693508df 1267 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc 1268 ictx->last_keycode = ictx->kc;
693508df 1269 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1270 }
1271
1272 return mouse_input;
1273}
1274
1275static void imon_touch_event(struct imon_context *ictx, unsigned char *buf)
1276{
1277 mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT);
1278 ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4);
1279 ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf));
1280 input_report_abs(ictx->touch, ABS_X, ictx->touch_x);
1281 input_report_abs(ictx->touch, ABS_Y, ictx->touch_y);
1282 input_report_key(ictx->touch, BTN_TOUCH, 0x01);
1283 input_sync(ictx->touch);
1284}
1285
1286static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf)
1287{
1288 int dir = 0;
1289 char rel_x = 0x00, rel_y = 0x00;
1290 u16 timeout, threshold;
eaf2bcc9 1291 u32 scancode = KEY_RESERVED;
693508df 1292 unsigned long flags;
21677cfc
JW		 1293
1294 /*
1295 * The imon directional pad functions more like a touchpad. Bytes 3 & 4
1296 * contain a position coordinate (x,y), with each component ranging
1297 * from -14 to 14. We want to down-sample this to only 4 discrete values
1298 * for up/down/left/right arrow keys. Also, when you get too close to
1299 * diagonals, it has a tendancy to jump back and forth, so lets try to
1300 * ignore when they get too close.
1301 */
1302 if (ictx->product != 0xffdc) {
1303 /* first, pad to 8 bytes so it conforms with everything else */
1304 buf[5] = buf[6] = buf[7] = 0;
1305 timeout = 500; /* in msecs */
1306 /* (2*threshold) x (2*threshold) square */
1307 threshold = pad_thresh ? pad_thresh : 28;
1308 rel_x = buf[2];
1309 rel_y = buf[3];
1310
6718e8ad 1311 if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) {
21677cfc
JW		 1312 if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) {
1313 dir = stabilize((int)rel_x, (int)rel_y,
1314 timeout, threshold);
1315 if (!dir) {
693508df
JW		 1316 spin_lock_irqsave(&ictx->kc_lock,
1317 flags);
21677cfc 1318 ictx->kc = KEY_UNKNOWN;
693508df
JW		 1319 spin_unlock_irqrestore(&ictx->kc_lock,
1320 flags);
21677cfc
JW		 1321 return;
1322 }
1323 buf[2] = dir & 0xFF;
1324 buf[3] = (dir >> 8) & 0xFF;
eaf2bcc9 1325 scancode = be32_to_cpu(*((u32 *)buf));
21677cfc
JW		 1326 }
1327 } else {
eaf2bcc9
DH		 1328 /*
1329 * Hack alert: instead of using keycodes, we have
1330 * to use hard-coded scancodes here...
1331 */
21677cfc
JW		 1332 if (abs(rel_y) > abs(rel_x)) {
1333 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1334 buf[3] = 0;
eaf2bcc9
DH		 1335 if (rel_y > 0)
1336 scancode = 0x01007f00; /* KEY_DOWN */
1337 else
1338 scancode = 0x01008000; /* KEY_UP */
21677cfc
JW		 1339 } else {
1340 buf[2] = 0;
1341 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
eaf2bcc9
DH		 1342 if (rel_x > 0)
1343 scancode = 0x0100007f; /* KEY_RIGHT */
1344 else
1345 scancode = 0x01000080; /* KEY_LEFT */
21677cfc
JW		 1346 }
1347 }
1348
1349 /*
1350 * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad
1351 * device (15c2:ffdc). The remote generates various codes from
1352 * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates
1353 * 0x688301b7 and the right one 0x688481b7. All other keys generate
1354 * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with
1355 * reversed endianess. Extract direction from buffer, rotate endianess,
1356 * adjust sign and feed the values into stabilize(). The resulting codes
1357 * will be 0x01008000, 0x01007F00, which match the newer devices.
1358 */
1359 } else {
1360 timeout = 10; /* in msecs */
1361 /* (2*threshold) x (2*threshold) square */
1362 threshold = pad_thresh ? pad_thresh : 15;
1363
1364 /* buf[1] is x */
1365 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1366 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1367 if (buf[0] & 0x02)
1368 rel_x |= ~0x10+1;
1369 /* buf[2] is y */
1370 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1371 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1372 if (buf[0] & 0x01)
1373 rel_y |= ~0x10+1;
1374
1375 buf[0] = 0x01;
1376 buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0;
1377
6718e8ad 1378 if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) {
21677cfc
JW		 1379 dir = stabilize((int)rel_x, (int)rel_y,
1380 timeout, threshold);
1381 if (!dir) {
693508df 1382 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc 1383 ictx->kc = KEY_UNKNOWN;
693508df 1384 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1385 return;
1386 }
1387 buf[2] = dir & 0xFF;
1388 buf[3] = (dir >> 8) & 0xFF;
eaf2bcc9 1389 scancode = be32_to_cpu(*((u32 *)buf));
21677cfc 1390 } else {
eaf2bcc9
DH		 1391 /*
1392 * Hack alert: instead of using keycodes, we have
1393 * to use hard-coded scancodes here...
1394 */
21677cfc
JW		 1395 if (abs(rel_y) > abs(rel_x)) {
1396 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1397 buf[3] = 0;
eaf2bcc9
DH		 1398 if (rel_y > 0)
1399 scancode = 0x01007f00; /* KEY_DOWN */
1400 else
1401 scancode = 0x01008000; /* KEY_UP */
21677cfc
JW		 1402 } else {
1403 buf[2] = 0;
1404 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
eaf2bcc9
DH		 1405 if (rel_x > 0)
1406 scancode = 0x0100007f; /* KEY_RIGHT */
1407 else
1408 scancode = 0x01000080; /* KEY_LEFT */
21677cfc
JW		 1409 }
1410 }
1411 }
eaf2bcc9 1412
693508df
JW		 1413 if (scancode) {
1414 spin_lock_irqsave(&ictx->kc_lock, flags);
eaf2bcc9 1415 ictx->kc = imon_remote_key_lookup(ictx, scancode);
693508df
JW		 1416 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1417 }
21677cfc
JW		 1418}
1419
eaf2bcc9
DH		 1420/**
1421 * figure out if these is a press or a release. We don't actually
1422 * care about repeats, as those will be auto-generated within the IR
1423 * subsystem for repeating scancodes.
1424 */
21677cfc
JW		 1425static int imon_parse_press_type(struct imon_context *ictx,
1426 unsigned char *buf, u8 ktype)
1427{
1428 int press_type = 0;
693508df
JW		 1429 unsigned long flags;
1430
1431 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1432
1433 /* key release of 0x02XXXXXX key */
1434 if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00)
1435 ictx->kc = ictx->last_keycode;
1436
1437 /* mouse button release on (some) 0xffdc devices */
1438 else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 &&
1439 buf[2] == 0x81 && buf[3] == 0xb7)
1440 ictx->kc = ictx->last_keycode;
1441
1442 /* mouse button release on (some other) 0xffdc devices */
1443 else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 &&
1444 buf[2] == 0x81 && buf[3] == 0xb7)
1445 ictx->kc = ictx->last_keycode;
1446
eaf2bcc9 1447 /* mce-specific button handling, no keyup events */
21677cfc 1448 else if (ktype == IMON_KEY_MCE) {
eaf2bcc9
DH		 1449 ictx->rc_toggle = buf[2];
1450 press_type = 1;
21677cfc
JW		 1451
1452 /* incoherent or irrelevant data */
1453 } else if (ictx->kc == KEY_RESERVED)
1454 press_type = -EINVAL;
1455
1456 /* key release of 0xXXXXXXb7 key */
1457 else if (ictx->release_code)
1458 press_type = 0;
1459
1460 /* this is a button press */
1461 else
1462 press_type = 1;
1463
693508df
JW		 1464 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1465
21677cfc
JW		 1466 return press_type;
1467}
1468
1469/**
1470 * Process the incoming packet
1471 */
1472static void imon_incoming_packet(struct imon_context *ictx,
1473 struct urb *urb, int intf)
1474{
1475 int len = urb->actual_length;
1476 unsigned char *buf = urb->transfer_buffer;
1477 struct device *dev = ictx->dev;
693508df 1478 unsigned long flags;
21677cfc 1479 u32 kc;
f789bf40 1480 bool norelease = false;
21677cfc 1481 int i;
eaf2bcc9 1482 u64 scancode;
21677cfc 1483 struct input_dev *idev = NULL;
eaf2bcc9 1484 struct ir_input_dev *irdev = NULL;
21677cfc
JW		 1485 int press_type = 0;
1486 int msec;
1487 struct timeval t;
1488 static struct timeval prev_time = { 0, 0 };
eaf2bcc9 1489 u8 ktype;
21677cfc
JW		 1490
1491 idev = ictx->idev;
eaf2bcc9 1492 irdev = input_get_drvdata(idev);
21677cfc
JW		 1493
1494 /* filter out junk data on the older 0xffdc imon devices */
bbe4690f 1495 if ((buf[0] == 0xff) && (buf[1] == 0xff) && (buf[2] == 0xff))
21677cfc
JW		 1496 return;
1497
1498 /* Figure out what key was pressed */
21677cfc 1499 if (len == 8 && buf[7] == 0xee) {
eaf2bcc9 1500 scancode = be64_to_cpu(*((u64 *)buf));
21677cfc 1501 ktype = IMON_KEY_PANEL;
eaf2bcc9 1502 kc = imon_panel_key_lookup(scancode);
21677cfc 1503 } else {
eaf2bcc9 1504 scancode = be32_to_cpu(*((u32 *)buf));
6718e8ad 1505 if (ictx->ir_type == IR_TYPE_RC6) {
eaf2bcc9 1506 ktype = IMON_KEY_IMON;
21677cfc
JW		 1507 if (buf[0] == 0x80)
1508 ktype = IMON_KEY_MCE;
eaf2bcc9
DH		 1509 kc = imon_mce_key_lookup(ictx, scancode);
1510 } else {
1511 ktype = IMON_KEY_IMON;
1512 kc = imon_remote_key_lookup(ictx, scancode);
1513 }
21677cfc
JW		 1514 }
1515
693508df 1516 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1517 /* keyboard/mouse mode toggle button */
1518 if (kc == KEY_KEYBOARD && !ictx->release_code) {
1519 ictx->last_keycode = kc;
1520 if (!nomouse) {
1521 ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1;
1522 dev_dbg(dev, "toggling to %s mode\n",
1523 ictx->pad_mouse ? "mouse" : "keyboard");
693508df 1524 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1525 return;
1526 } else {
1527 ictx->pad_mouse = 0;
1528 dev_dbg(dev, "mouse mode disabled, passing key value\n");
1529 }
1530 }
1531
1532 ictx->kc = kc;
693508df 1533 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1534
1535 /* send touchscreen events through input subsystem if touchpad data */
1536 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 &&
1537 buf[7] == 0x86) {
1538 imon_touch_event(ictx, buf);
eaf2bcc9 1539 return;
21677cfc
JW		 1540
1541 /* look for mouse events with pad in mouse mode */
1542 } else if (ictx->pad_mouse) {
1543 if (imon_mouse_event(ictx, buf, len))
1544 return;
1545 }
1546
1547 /* Now for some special handling to convert pad input to arrow keys */
1548 if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) ||
1549 ((len == 8) && (buf[0] & 0x40) &&
1550 !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) {
1551 len = 8;
1552 imon_pad_to_keys(ictx, buf);
f789bf40 1553 norelease = true;
21677cfc
JW		 1554 }
1555
1556 if (debug) {
1557 printk(KERN_INFO "intf%d decoded packet: ", intf);
1558 for (i = 0; i < len; ++i)
1559 printk("%02x ", buf[i]);
1560 printk("\n");
1561 }
1562
1563 press_type = imon_parse_press_type(ictx, buf, ktype);
1564 if (press_type < 0)
1565 goto not_input_data;
1566
693508df 1567 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1568 if (ictx->kc == KEY_UNKNOWN)
1569 goto unknown_key;
693508df 1570 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1571
eaf2bcc9
DH		 1572 if (ktype != IMON_KEY_PANEL) {
1573 if (press_type == 0)
1574 ir_keyup(irdev);
1575 else {
1576 ir_keydown(ictx->rdev, ictx->rc_scancode,
1577 ictx->rc_toggle);
693508df 1578 spin_lock_irqsave(&ictx->kc_lock, flags);
eaf2bcc9 1579 ictx->last_keycode = ictx->kc;
693508df 1580 spin_unlock_irqrestore(&ictx->kc_lock, flags);
eaf2bcc9
DH		 1581 }
1582 return;
1583 }
1584
1585 /* Only panel type events left to process now */
693508df
JW		 1586 spin_lock_irqsave(&ictx->kc_lock, flags);
1587
eaf2bcc9
DH		 1588 /* KEY_MUTE repeats from knob need to be suppressed */
1589 if (ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) {
21677cfc
JW		 1590 do_gettimeofday(&t);
1591 msec = tv2int(&t, &prev_time);
1592 prev_time = t;
693508df
JW		 1593 if (msec < idev->rep[REP_DELAY]) {
1594 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1595 return;
693508df 1596 }
21677cfc 1597 }
693508df
JW		 1598 kc = ictx->kc;
1599
1600 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1601
693508df 1602 input_report_key(idev, kc, press_type);
21677cfc
JW		 1603 input_sync(idev);
1604
eaf2bcc9 1605 /* panel keys don't generate a release */
693508df 1606 input_report_key(idev, kc, 0);
eaf2bcc9 1607 input_sync(idev);
21677cfc 1608
693508df 1609 ictx->last_keycode = kc;
21677cfc
JW		 1610
1611 return;
1612
1613unknown_key:
693508df 1614 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1615 dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__,
eaf2bcc9 1616 (long long)scancode);
21677cfc
JW		 1617 return;
1618
1619not_input_data:
1620 if (len != 8) {
1621 dev_warn(dev, "imon %s: invalid incoming packet "
1622 "size (len = %d, intf%d)\n", __func__, len, intf);
1623 return;
1624 }
1625
1626 /* iMON 2.4G associate frame */
1627 if (buf[0] == 0x00 &&
1628 buf[2] == 0xFF && /* REFID */
1629 buf[3] == 0xFF &&
1630 buf[4] == 0xFF &&
1631 buf[5] == 0xFF && /* iMON 2.4G */
1632 ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */
1633 (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */
1634 dev_warn(dev, "%s: remote associated refid=%02X\n",
1635 __func__, buf[1]);
f789bf40 1636 ictx->rf_isassociating = false;
21677cfc
JW		 1637 }
1638}
1639
1640/**
1641 * Callback function for USB core API: receive data
1642 */
1643static void usb_rx_callback_intf0(struct urb *urb)
1644{
1645 struct imon_context *ictx;
1646 int intfnum = 0;
1647
1648 if (!urb)
1649 return;
1650
1651 ictx = (struct imon_context *)urb->context;
1652 if (!ictx)
1653 return;
1654
1655 switch (urb->status) {
1656 case -ENOENT: /* usbcore unlink successful! */
1657 return;
1658
1659 case -ESHUTDOWN: /* transport endpoint was shut down */
1660 break;
1661
1662 case 0:
1663 imon_incoming_packet(ictx, urb, intfnum);
1664 break;
1665
1666 default:
1667 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1668 __func__, urb->status);
1669 break;
1670 }
1671
1672 usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
1673}
1674
1675static void usb_rx_callback_intf1(struct urb *urb)
1676{
1677 struct imon_context *ictx;
1678 int intfnum = 1;
1679
1680 if (!urb)
1681 return;
1682
1683 ictx = (struct imon_context *)urb->context;
1684 if (!ictx)
1685 return;
1686
1687 switch (urb->status) {
1688 case -ENOENT: /* usbcore unlink successful! */
1689 return;
1690
1691 case -ESHUTDOWN: /* transport endpoint was shut down */
1692 break;
1693
1694 case 0:
1695 imon_incoming_packet(ictx, urb, intfnum);
1696 break;
1697
1698 default:
1699 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1700 __func__, urb->status);
1701 break;
1702 }
1703
1704 usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
1705}
1706
04292fc0
JW		 1707/*
1708 * The 0x15c2:0xffdc device ID was used for umpteen different imon
1709 * devices, and all of them constantly spew interrupts, even when there
1710 * is no actual data to report. However, byte 6 of this buffer looks like
1711 * its unique across device variants, so we're trying to key off that to
1712 * figure out which display type (if any) and what IR protocol the device
1713 * actually supports. These devices have their IR protocol hard-coded into
1714 * their firmware, they can't be changed on the fly like the newer hardware.
1715 */
1716static void imon_get_ffdc_type(struct imon_context *ictx)
1717{
1718 u8 ffdc_cfg_byte = ictx->usb_rx_buf[6];
1719 u8 detected_display_type = IMON_DISPLAY_TYPE_NONE;
1720 u64 allowed_protos = IR_TYPE_OTHER;
1721
1722 switch (ffdc_cfg_byte) {
1723 /* iMON Knob, no display, iMON IR + vol knob */
1724 case 0x21:
1725 dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR");
1726 ictx->display_supported = false;
1727 break;
1728 /* iMON 2.4G LT (usb stick), no display, iMON RF */
1729 case 0x4e:
1730 dev_info(ictx->dev, "0xffdc iMON 2.4G LT, iMON RF");
1731 ictx->display_supported = false;
1732 ictx->rf_device = true;
1733 break;
1734 /* iMON VFD, no IR (does have vol knob tho) */
1735 case 0x35:
1736 dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR");
1737 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1738 break;
1739 /* iMON VFD, iMON IR */
1740 case 0x24:
1741 case 0x85:
1742 dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR");
1743 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1744 break;
1745 /* iMON VFD, MCE IR */
1746 case 0x9e:
1747 dev_info(ictx->dev, "0xffdc iMON VFD, MCE IR");
1748 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1749 allowed_protos = IR_TYPE_RC6;
1750 break;
1751 /* iMON LCD, MCE IR */
1752 case 0x9f:
1753 dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR");
1754 detected_display_type = IMON_DISPLAY_TYPE_LCD;
1755 allowed_protos = IR_TYPE_RC6;
1756 break;
1757 default:
1758 dev_info(ictx->dev, "Unknown 0xffdc device, "
1759 "defaulting to VFD and iMON IR");
1760 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1761 break;
1762 }
1763
1764 printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte);
1765
1766 ictx->display_type = detected_display_type;
1767 ictx->props->allowed_protos = allowed_protos;
1768 ictx->ir_type = allowed_protos;
1769}
1770
1771static void imon_set_display_type(struct imon_context *ictx)
1772{
1773 u8 configured_display_type = IMON_DISPLAY_TYPE_VFD;
1774
1775 /*
1776 * Try to auto-detect the type of display if the user hasn't set
1777 * it by hand via the display_type modparam. Default is VFD.
1778 */
1779
1780 if (display_type == IMON_DISPLAY_TYPE_AUTO) {
1781 switch (ictx->product) {
1782 case 0xffdc:
1783 /* set in imon_get_ffdc_type() */
1784 configured_display_type = ictx->display_type;
1785 break;
1786 case 0x0034:
1787 case 0x0035:
1788 configured_display_type = IMON_DISPLAY_TYPE_VGA;
1789 break;
1790 case 0x0038:
1791 case 0x0039:
1792 case 0x0045:
1793 configured_display_type = IMON_DISPLAY_TYPE_LCD;
1794 break;
1795 case 0x003c:
1796 case 0x0041:
1797 case 0x0042:
1798 case 0x0043:
1799 configured_display_type = IMON_DISPLAY_TYPE_NONE;
1800 ictx->display_supported = false;
1801 break;
1802 case 0x0036:
1803 case 0x0044:
1804 default:
1805 configured_display_type = IMON_DISPLAY_TYPE_VFD;
1806 break;
1807 }
1808 } else {
1809 configured_display_type = display_type;
1810 if (display_type == IMON_DISPLAY_TYPE_NONE)
1811 ictx->display_supported = false;
1812 else
1813 ictx->display_supported = true;
1814 dev_info(ictx->dev, "%s: overriding display type to %d via "
1815 "modparam\n", __func__, display_type);
1816 }
1817
1818 ictx->display_type = configured_display_type;
1819}
1820
eaf2bcc9
DH		 1821static struct input_dev *imon_init_rdev(struct imon_context *ictx)
1822{
1823 struct input_dev *rdev;
1824 struct ir_dev_props *props;
1825 int ret;
04292fc0
JW		 1826 char *ir_codes = NULL;
1827 const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
1828 0x00, 0x00, 0x00, 0x88 };
eaf2bcc9
DH		 1829
1830 rdev = input_allocate_device();
1831 props = kzalloc(sizeof(*props), GFP_KERNEL);
1832 if (!rdev || !props) {
1833 dev_err(ictx->dev, "remote control dev allocation failed\n");
1834 goto out;
1835 }
1836
1837 snprintf(ictx->name_rdev, sizeof(ictx->name_rdev),
1838 "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product);
1839 usb_make_path(ictx->usbdev_intf0, ictx->phys_rdev,
1840 sizeof(ictx->phys_rdev));
1841 strlcat(ictx->phys_rdev, "/input0", sizeof(ictx->phys_rdev));
1842
1843 rdev->name = ictx->name_rdev;
1844 rdev->phys = ictx->phys_rdev;
1845 usb_to_input_id(ictx->usbdev_intf0, &rdev->id);
1846 rdev->dev.parent = ictx->dev;
1847 rdev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
1848 input_set_drvdata(rdev, ictx);
1849
1850 props->priv = ictx;
1851 props->driver_type = RC_DRIVER_SCANCODE;
1852 props->allowed_protos = IR_TYPE_OTHER | IR_TYPE_RC6; /* iMON PAD or MCE */
1853 props->change_protocol = imon_ir_change_protocol;
1854 ictx->props = props;
1855
04292fc0
JW		 1856 /* Enable front-panel buttons and/or knobs */
1857 memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet));
1858 ret = send_packet(ictx);
1859 /* Not fatal, but warn about it */
1860 if (ret)
1861 dev_info(ictx->dev, "panel buttons/knobs setup failed\n");
1862
1863 if (ictx->product == 0xffdc)
1864 imon_get_ffdc_type(ictx);
1865
1866 imon_set_display_type(ictx);
1867
1868 if (ictx->ir_type == IR_TYPE_RC6)
1869 ir_codes = RC_MAP_IMON_MCE;
1870 else
1871 ir_codes = RC_MAP_IMON_PAD;
1872
1873 ret = ir_input_register(rdev, ir_codes, props, MOD_NAME);
eaf2bcc9
DH		 1874 if (ret < 0) {
1875 dev_err(ictx->dev, "remote input dev register failed\n");
1876 goto out;
1877 }
1878
1879 return rdev;
1880
1881out:
1882 kfree(props);
1883 input_free_device(rdev);
1884 return NULL;
1885}
1886
21677cfc
JW		 1887static struct input_dev *imon_init_idev(struct imon_context *ictx)
1888{
1889 struct input_dev *idev;
21677cfc 1890 int ret, i;
21677cfc
JW		 1891
1892 idev = input_allocate_device();
1893 if (!idev) {
eaf2bcc9
DH		 1894 dev_err(ictx->dev, "input dev allocation failed\n");
1895 goto out;
21677cfc
JW		 1896 }
1897
21677cfc 1898 snprintf(ictx->name_idev, sizeof(ictx->name_idev),
eaf2bcc9
DH		 1899 "iMON Panel, Knob and Mouse(%04x:%04x)",
1900 ictx->vendor, ictx->product);
21677cfc
JW		 1901 idev->name = ictx->name_idev;
1902
1903 usb_make_path(ictx->usbdev_intf0, ictx->phys_idev,
1904 sizeof(ictx->phys_idev));
eaf2bcc9 1905 strlcat(ictx->phys_idev, "/input1", sizeof(ictx->phys_idev));
21677cfc
JW		 1906 idev->phys = ictx->phys_idev;
1907
db190fc1 1908 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
21677cfc
JW		 1909
1910 idev->keybit[BIT_WORD(BTN_MOUSE)] =
1911 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1912 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
1913 BIT_MASK(REL_WHEEL);
1914
1915 /* panel and/or knob code support */
1916 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
1917 u32 kc = imon_panel_key_table[i].keycode;
1918 __set_bit(kc, idev->keybit);
1919 }
1920
21677cfc
JW		 1921 usb_to_input_id(ictx->usbdev_intf0, &idev->id);
1922 idev->dev.parent = ictx->dev;
eaf2bcc9 1923 input_set_drvdata(idev, ictx);
21677cfc 1924
eaf2bcc9 1925 ret = input_register_device(idev);
21677cfc 1926 if (ret < 0) {
eaf2bcc9
DH		 1927 dev_err(ictx->dev, "input dev register failed\n");
1928 goto out;
21677cfc
JW		 1929 }
1930
1931 return idev;
1932
eaf2bcc9 1933out:
21677cfc 1934 input_free_device(idev);
21677cfc
JW		 1935 return NULL;
1936}
1937
1938static struct input_dev *imon_init_touch(struct imon_context *ictx)
1939{
1940 struct input_dev *touch;
1941 int ret;
1942
1943 touch = input_allocate_device();
1944 if (!touch) {
1945 dev_err(ictx->dev, "touchscreen input dev allocation failed\n");
1946 goto touch_alloc_failed;
1947 }
1948
1949 snprintf(ictx->name_touch, sizeof(ictx->name_touch),
1950 "iMON USB Touchscreen (%04x:%04x)",
1951 ictx->vendor, ictx->product);
1952 touch->name = ictx->name_touch;
1953
1954 usb_make_path(ictx->usbdev_intf1, ictx->phys_touch,
1955 sizeof(ictx->phys_touch));
eaf2bcc9 1956 strlcat(ictx->phys_touch, "/input2", sizeof(ictx->phys_touch));
21677cfc
JW		 1957 touch->phys = ictx->phys_touch;
1958
1959 touch->evbit[0] =
1960 BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1961 touch->keybit[BIT_WORD(BTN_TOUCH)] =
1962 BIT_MASK(BTN_TOUCH);
1963 input_set_abs_params(touch, ABS_X,
1964 0x00, 0xfff, 0, 0);
1965 input_set_abs_params(touch, ABS_Y,
1966 0x00, 0xfff, 0, 0);
1967
1968 input_set_drvdata(touch, ictx);
1969
1970 usb_to_input_id(ictx->usbdev_intf1, &touch->id);
1971 touch->dev.parent = ictx->dev;
1972 ret = input_register_device(touch);
1973 if (ret < 0) {
1974 dev_info(ictx->dev, "touchscreen input dev register failed\n");
1975 goto touch_register_failed;
1976 }
1977
1978 return touch;
1979
1980touch_register_failed:
1981 input_free_device(ictx->touch);
21677cfc
JW		 1982
1983touch_alloc_failed:
1984 return NULL;
1985}
1986
1987static bool imon_find_endpoints(struct imon_context *ictx,
1988 struct usb_host_interface *iface_desc)
1989{
1990 struct usb_endpoint_descriptor *ep;
1991 struct usb_endpoint_descriptor *rx_endpoint = NULL;
1992 struct usb_endpoint_descriptor *tx_endpoint = NULL;
1993 int ifnum = iface_desc->desc.bInterfaceNumber;
1994 int num_endpts = iface_desc->desc.bNumEndpoints;
1995 int i, ep_dir, ep_type;
f789bf40
JW		 1996 bool ir_ep_found = false;
1997 bool display_ep_found = false;
1998 bool tx_control = false;
21677cfc
JW		 1999
2000 /*
2001 * Scan the endpoint list and set:
2002 * first input endpoint = IR endpoint
2003 * first output endpoint = display endpoint
2004 */
2005 for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) {
2006 ep = &iface_desc->endpoint[i].desc;
2007 ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
2008 ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
2009
2010 if (!ir_ep_found && ep_dir == USB_DIR_IN &&
2011 ep_type == USB_ENDPOINT_XFER_INT) {
2012
2013 rx_endpoint = ep;
f789bf40 2014 ir_ep_found = true;
21677cfc
JW		 2015 dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__);
2016
2017 } else if (!display_ep_found && ep_dir == USB_DIR_OUT &&
2018 ep_type == USB_ENDPOINT_XFER_INT) {
2019 tx_endpoint = ep;
f789bf40 2020 display_ep_found = true;
21677cfc
JW		 2021 dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__);
2022 }
2023 }
2024
2025 if (ifnum == 0) {
2026 ictx->rx_endpoint_intf0 = rx_endpoint;
2027 /*
2028 * tx is used to send characters to lcd/vfd, associate RF
2029 * remotes, set IR protocol, and maybe more...
2030 */
2031 ictx->tx_endpoint = tx_endpoint;
2032 } else {
2033 ictx->rx_endpoint_intf1 = rx_endpoint;
2034 }
2035
2036 /*
2037 * If we didn't find a display endpoint, this is probably one of the
2038 * newer iMON devices that use control urb instead of interrupt
2039 */
2040 if (!display_ep_found) {
f789bf40
JW		 2041 tx_control = true;
2042 display_ep_found = true;
21677cfc
JW		 2043 dev_dbg(ictx->dev, "%s: device uses control endpoint, not "
2044 "interface OUT endpoint\n", __func__);
2045 }
2046
2047 /*
2048 * Some iMON receivers have no display. Unfortunately, it seems
2049 * that SoundGraph recycles device IDs between devices both with
2050 * and without... :\
2051 */
2052 if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) {
f789bf40 2053 display_ep_found = false;
21677cfc
JW		 2054 dev_dbg(ictx->dev, "%s: device has no display\n", __func__);
2055 }
2056
2057 /*
2058 * iMON Touch devices have a VGA touchscreen, but no "display", as
2059 * that refers to e.g. /dev/lcd0 (a character device LCD or VFD).
2060 */
2061 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
f789bf40 2062 display_ep_found = false;
21677cfc
JW		 2063 dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__);
2064 }
2065
2066 /* Input endpoint is mandatory */
2067 if (!ir_ep_found)
2068 err("%s: no valid input (IR) endpoint found.", __func__);
2069
2070 ictx->tx_control = tx_control;
2071
2072 if (display_ep_found)
2073 ictx->display_supported = true;
2074
2075 return ir_ep_found;
2076
2077}
2078
2079static struct imon_context *imon_init_intf0(struct usb_interface *intf)
2080{
2081 struct imon_context *ictx;
2082 struct urb *rx_urb;
2083 struct urb *tx_urb;
2084 struct device *dev = &intf->dev;
2085 struct usb_host_interface *iface_desc;
1f71baef 2086 int ret = -ENOMEM;
21677cfc
JW		 2087
2088 ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL);
2089 if (!ictx) {
2090 dev_err(dev, "%s: kzalloc failed for context", __func__);
2091 goto exit;
2092 }
2093 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2094 if (!rx_urb) {
2095 dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__);
2096 goto rx_urb_alloc_failed;
2097 }
2098 tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2099 if (!tx_urb) {
2100 dev_err(dev, "%s: usb_alloc_urb failed for display urb",
2101 __func__);
2102 goto tx_urb_alloc_failed;
2103 }
2104
2105 mutex_init(&ictx->lock);
693508df 2106 spin_lock_init(&ictx->kc_lock);
21677cfc
JW		 2107
2108 mutex_lock(&ictx->lock);
2109
2110 ictx->dev = dev;
2111 ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf));
f789bf40 2112 ictx->dev_present_intf0 = true;
21677cfc
JW		 2113 ictx->rx_urb_intf0 = rx_urb;
2114 ictx->tx_urb = tx_urb;
bbe4690f 2115 ictx->rf_device = false;
21677cfc
JW		 2116
2117 ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor);
2118 ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct);
2119
1f71baef 2120 ret = -ENODEV;
21677cfc 2121 iface_desc = intf->cur_altsetting;
1f71baef 2122 if (!imon_find_endpoints(ictx, iface_desc)) {
21677cfc 2123 goto find_endpoint_failed;
1f71baef 2124 }
21677cfc
JW		 2125
2126 ictx->idev = imon_init_idev(ictx);
2127 if (!ictx->idev) {
2128 dev_err(dev, "%s: input device setup failed\n", __func__);
2129 goto idev_setup_failed;
2130 }
2131
eaf2bcc9
DH		 2132 ictx->rdev = imon_init_rdev(ictx);
2133 if (!ictx->rdev) {
2134 dev_err(dev, "%s: rc device setup failed\n", __func__);
2135 goto rdev_setup_failed;
2136 }
2137
21677cfc
JW		 2138 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2139 usb_rcvintpipe(ictx->usbdev_intf0,
2140 ictx->rx_endpoint_intf0->bEndpointAddress),
2141 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2142 usb_rx_callback_intf0, ictx,
2143 ictx->rx_endpoint_intf0->bInterval);
2144
2145 ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL);
2146 if (ret) {
2147 err("%s: usb_submit_urb failed for intf0 (%d)",
2148 __func__, ret);
2149 goto urb_submit_failed;
2150 }
2151
2152 return ictx;
2153
2154urb_submit_failed:
eaf2bcc9
DH		 2155 ir_input_unregister(ictx->rdev);
2156rdev_setup_failed:
2157 input_unregister_device(ictx->idev);
21677cfc
JW		 2158idev_setup_failed:
2159find_endpoint_failed:
2160 mutex_unlock(&ictx->lock);
2161 usb_free_urb(tx_urb);
2162tx_urb_alloc_failed:
2163 usb_free_urb(rx_urb);
2164rx_urb_alloc_failed:
2165 kfree(ictx);
2166exit:
2167 dev_err(dev, "unable to initialize intf0, err %d\n", ret);
2168
2169 return NULL;
2170}
2171
2172static struct imon_context *imon_init_intf1(struct usb_interface *intf,
2173 struct imon_context *ictx)
2174{
2175 struct urb *rx_urb;
2176 struct usb_host_interface *iface_desc;
1f71baef 2177 int ret = -ENOMEM;
21677cfc
JW		 2178
2179 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2180 if (!rx_urb) {
2181 err("%s: usb_alloc_urb failed for IR urb", __func__);
21677cfc
JW		 2182 goto rx_urb_alloc_failed;
2183 }
2184
2185 mutex_lock(&ictx->lock);
2186
2187 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2188 init_timer(&ictx->ttimer);
2189 ictx->ttimer.data = (unsigned long)ictx;
2190 ictx->ttimer.function = imon_touch_display_timeout;
2191 }
2192
2193 ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf));
f789bf40 2194 ictx->dev_present_intf1 = true;
21677cfc
JW		 2195 ictx->rx_urb_intf1 = rx_urb;
2196
1f71baef 2197 ret = -ENODEV;
21677cfc
JW		 2198 iface_desc = intf->cur_altsetting;
2199 if (!imon_find_endpoints(ictx, iface_desc))
2200 goto find_endpoint_failed;
2201
2202 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2203 ictx->touch = imon_init_touch(ictx);
2204 if (!ictx->touch)
2205 goto touch_setup_failed;
2206 } else
2207 ictx->touch = NULL;
2208
2209 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2210 usb_rcvintpipe(ictx->usbdev_intf1,
2211 ictx->rx_endpoint_intf1->bEndpointAddress),
2212 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2213 usb_rx_callback_intf1, ictx,
2214 ictx->rx_endpoint_intf1->bInterval);
2215
2216 ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL);
2217
2218 if (ret) {
2219 err("%s: usb_submit_urb failed for intf1 (%d)",
2220 __func__, ret);
2221 goto urb_submit_failed;
2222 }
2223
2224 return ictx;
2225
2226urb_submit_failed:
20cd1959 2227 if (ictx->touch)
21677cfc 2228 input_unregister_device(ictx->touch);
21677cfc
JW		 2229touch_setup_failed:
2230find_endpoint_failed:
2231 mutex_unlock(&ictx->lock);
2232 usb_free_urb(rx_urb);
2233rx_urb_alloc_failed:
2234 dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret);
2235
2236 return NULL;
2237}
2238
21677cfc
JW		 2239static void imon_init_display(struct imon_context *ictx,
2240 struct usb_interface *intf)
2241{
2242 int ret;
2243
2244 dev_dbg(ictx->dev, "Registering iMON display with sysfs\n");
2245
2246 /* set up sysfs entry for built-in clock */
2247 ret = sysfs_create_group(&intf->dev.kobj,
2248 &imon_display_attribute_group);
2249 if (ret)
2250 dev_err(ictx->dev, "Could not create display sysfs "
2251 "entries(%d)", ret);
2252
2253 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2254 ret = usb_register_dev(intf, &imon_lcd_class);
2255 else
2256 ret = usb_register_dev(intf, &imon_vfd_class);
2257 if (ret)
2258 /* Not a fatal error, so ignore */
2259 dev_info(ictx->dev, "could not get a minor number for "
2260 "display\n");
2261
2262}
2263
2264/**
2265 * Callback function for USB core API: Probe
2266 */
2267static int __devinit imon_probe(struct usb_interface *interface,
2268 const struct usb_device_id *id)
2269{
2270 struct usb_device *usbdev = NULL;
2271 struct usb_host_interface *iface_desc = NULL;
2272 struct usb_interface *first_if;
2273 struct device *dev = &interface->dev;
2274 int ifnum, code_length, sysfs_err;
2275 int ret = 0;
2276 struct imon_context *ictx = NULL;
2277 struct imon_context *first_if_ctx = NULL;
2278 u16 vendor, product;
21677cfc
JW		 2279
2280 code_length = BUF_CHUNK_SIZE * 8;
2281
2282 usbdev = usb_get_dev(interface_to_usbdev(interface));
2283 iface_desc = interface->cur_altsetting;
2284 ifnum = iface_desc->desc.bInterfaceNumber;
2285 vendor = le16_to_cpu(usbdev->descriptor.idVendor);
2286 product = le16_to_cpu(usbdev->descriptor.idProduct);
2287
2288 dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n",
2289 __func__, vendor, product, ifnum);
2290
2291 /* prevent races probing devices w/multiple interfaces */
2292 mutex_lock(&driver_lock);
2293
2294 first_if = usb_ifnum_to_if(usbdev, 0);
2295 first_if_ctx = (struct imon_context *)usb_get_intfdata(first_if);
2296
2297 if (ifnum == 0) {
2298 ictx = imon_init_intf0(interface);
2299 if (!ictx) {
2300 err("%s: failed to initialize context!\n", __func__);
2301 ret = -ENODEV;
2302 goto fail;
2303 }
2304
21677cfc
JW		 2305 } else {
2306 /* this is the secondary interface on the device */
2307 ictx = imon_init_intf1(interface, first_if_ctx);
2308 if (!ictx) {
2309 err("%s: failed to attach to context!\n", __func__);
2310 ret = -ENODEV;
2311 goto fail;
2312 }
2313
2314 }
2315
2316 usb_set_intfdata(interface, ictx);
2317
2318 if (ifnum == 0) {
bbe4690f
JW		 2319 if (product == 0xffdc && ictx->rf_device) {
2320 sysfs_err = sysfs_create_group(&interface->dev.kobj,
2321 &imon_rf_attribute_group);
2322 if (sysfs_err)
2323 err("%s: Could not create RF sysfs entries(%d)",
2324 __func__, sysfs_err);
2325 }
2326
21677cfc
JW		 2327 if (ictx->display_supported)
2328 imon_init_display(ictx, interface);
2329 }
2330
2331 /* set IR protocol/remote type */
6718e8ad
JW		 2332 ret = imon_ir_change_protocol(ictx, ictx->ir_type);
2333 if (ret) {
2334 dev_warn(dev, "%s: failed to set IR protocol, falling back "
2335 "to standard iMON protocol mode\n", __func__);
2336 ictx->ir_type = IR_TYPE_OTHER;
2337 }
21677cfc
JW		 2338
2339 dev_info(dev, "iMON device (%04x:%04x, intf%d) on "
2340 "usb<%d:%d> initialized\n", vendor, product, ifnum,
2341 usbdev->bus->busnum, usbdev->devnum);
2342
2343 mutex_unlock(&ictx->lock);
2344 mutex_unlock(&driver_lock);
2345
2346 return 0;
2347
2348fail:
2349 mutex_unlock(&driver_lock);
2350 dev_err(dev, "unable to register, err %d\n", ret);
2351
2352 return ret;
2353}
2354
2355/**
2356 * Callback function for USB core API: disconnect
2357 */
2358static void __devexit imon_disconnect(struct usb_interface *interface)
2359{
2360 struct imon_context *ictx;
2361 struct device *dev;
2362 int ifnum;
2363
2364 /* prevent races with multi-interface device probing and display_open */
2365 mutex_lock(&driver_lock);
2366
2367 ictx = usb_get_intfdata(interface);
2368 dev = ictx->dev;
2369 ifnum = interface->cur_altsetting->desc.bInterfaceNumber;
2370
2371 mutex_lock(&ictx->lock);
2372
2373 /*
2374 * sysfs_remove_group is safe to call even if sysfs_create_group
2375 * hasn't been called
2376 */
2377 sysfs_remove_group(&interface->dev.kobj,
2378 &imon_display_attribute_group);
2379 sysfs_remove_group(&interface->dev.kobj,
2380 &imon_rf_attribute_group);
2381
2382 usb_set_intfdata(interface, NULL);
2383
2384 /* Abort ongoing write */
2385 if (ictx->tx.busy) {
2386 usb_kill_urb(ictx->tx_urb);
2387 complete_all(&ictx->tx.finished);
2388 }
2389
2390 if (ifnum == 0) {
f789bf40 2391 ictx->dev_present_intf0 = false;
21677cfc 2392 usb_kill_urb(ictx->rx_urb_intf0);
eaf2bcc9
DH		 2393 input_unregister_device(ictx->idev);
2394 ir_input_unregister(ictx->rdev);
21677cfc
JW		 2395 if (ictx->display_supported) {
2396 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2397 usb_deregister_dev(interface, &imon_lcd_class);
2398 else
2399 usb_deregister_dev(interface, &imon_vfd_class);
2400 }
2401 } else {
f789bf40 2402 ictx->dev_present_intf1 = false;
21677cfc
JW		 2403 usb_kill_urb(ictx->rx_urb_intf1);
2404 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2405 input_unregister_device(ictx->touch);
2406 }
2407
2408 if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) {
2409 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2410 del_timer_sync(&ictx->ttimer);
2411 mutex_unlock(&ictx->lock);
2412 if (!ictx->display_isopen)
2413 free_imon_context(ictx);
eaf2bcc9 2414 } else
21677cfc 2415 mutex_unlock(&ictx->lock);
21677cfc
JW		 2416
2417 mutex_unlock(&driver_lock);
2418
2419 dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n",
2420 __func__, ifnum);
2421}
2422
2423static int imon_suspend(struct usb_interface *intf, pm_message_t message)
2424{
2425 struct imon_context *ictx = usb_get_intfdata(intf);
2426 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2427
2428 if (ifnum == 0)
2429 usb_kill_urb(ictx->rx_urb_intf0);
2430 else
2431 usb_kill_urb(ictx->rx_urb_intf1);
2432
2433 return 0;
2434}
2435
2436static int imon_resume(struct usb_interface *intf)
2437{
2438 int rc = 0;
2439 struct imon_context *ictx = usb_get_intfdata(intf);
2440 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2441
2442 if (ifnum == 0) {
2443 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2444 usb_rcvintpipe(ictx->usbdev_intf0,
2445 ictx->rx_endpoint_intf0->bEndpointAddress),
2446 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2447 usb_rx_callback_intf0, ictx,
2448 ictx->rx_endpoint_intf0->bInterval);
2449
2450 rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
2451
2452 } else {
2453 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2454 usb_rcvintpipe(ictx->usbdev_intf1,
2455 ictx->rx_endpoint_intf1->bEndpointAddress),
2456 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2457 usb_rx_callback_intf1, ictx,
2458 ictx->rx_endpoint_intf1->bInterval);
2459
2460 rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
2461 }
2462
2463 return rc;
2464}
2465
2466static int __init imon_init(void)
2467{
2468 int rc;
2469
2470 rc = usb_register(&imon_driver);
2471 if (rc) {
2472 err("%s: usb register failed(%d)", __func__, rc);
2473 rc = -ENODEV;
2474 }
2475
2476 return rc;
2477}
2478
2479static void __exit imon_exit(void)
2480{
2481 usb_deregister(&imon_driver);
2482}
2483
2484module_init(imon_init);
2485module_exit(imon_exit);
Linux 6.x block layer and io_uring tree(s)