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[media] rc: rename the remaining things to rc_core
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / rc / 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
e2302501
JP		 29#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
30
21677cfc
JW		 31#include <linux/errno.h>
32#include <linux/init.h>
33#include <linux/kernel.h>
34#include <linux/module.h>
35#include <linux/slab.h>
36#include <linux/uaccess.h>
37
38#include <linux/input.h>
39#include <linux/usb.h>
40#include <linux/usb/input.h>
6bda9644 41#include <media/rc-core.h>
21677cfc
JW		 42
43#include <linux/time.h>
44#include <linux/timer.h>
45
46#define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
47#define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display"
48#define MOD_NAME "imon"
eaf2bcc9 49#define MOD_VERSION "0.9.2"
21677cfc
JW		 50
51#define DISPLAY_MINOR_BASE 144
52#define DEVICE_NAME "lcd%d"
53
54#define BUF_CHUNK_SIZE 8
55#define BUF_SIZE 128
56
57#define BIT_DURATION 250 /* each bit received is 250us */
58
59#define IMON_CLOCK_ENABLE_PACKETS 2
21677cfc
JW		 60
61/*** P R O T O T Y P E S ***/
62
63/* USB Callback prototypes */
64static int imon_probe(struct usb_interface *interface,
65 const struct usb_device_id *id);
66static void imon_disconnect(struct usb_interface *interface);
67static void usb_rx_callback_intf0(struct urb *urb);
68static void usb_rx_callback_intf1(struct urb *urb);
69static void usb_tx_callback(struct urb *urb);
70
71/* suspend/resume support */
72static int imon_resume(struct usb_interface *intf);
73static int imon_suspend(struct usb_interface *intf, pm_message_t message);
74
75/* Display file_operations function prototypes */
76static int display_open(struct inode *inode, struct file *file);
77static int display_close(struct inode *inode, struct file *file);
78
79/* VFD write operation */
80static ssize_t vfd_write(struct file *file, const char *buf,
81 size_t n_bytes, loff_t *pos);
82
83/* LCD file_operations override function prototypes */
84static ssize_t lcd_write(struct file *file, const char *buf,
85 size_t n_bytes, loff_t *pos);
86
87/*** G L O B A L S ***/
88
89struct imon_context {
90 struct device *dev;
21677cfc
JW		 91 /* Newer devices have two interfaces */
92 struct usb_device *usbdev_intf0;
93 struct usb_device *usbdev_intf1;
94
95 bool display_supported; /* not all controllers do */
96 bool display_isopen; /* display port has been opened */
bbe4690f 97 bool rf_device; /* true if iMON 2.4G LT/DT RF device */
21677cfc
JW		 98 bool rf_isassociating; /* RF remote associating */
99 bool dev_present_intf0; /* USB device presence, interface 0 */
100 bool dev_present_intf1; /* USB device presence, interface 1 */
101
102 struct mutex lock; /* to lock this object */
103 wait_queue_head_t remove_ok; /* For unexpected USB disconnects */
104
105 struct usb_endpoint_descriptor *rx_endpoint_intf0;
106 struct usb_endpoint_descriptor *rx_endpoint_intf1;
107 struct usb_endpoint_descriptor *tx_endpoint;
108 struct urb *rx_urb_intf0;
109 struct urb *rx_urb_intf1;
110 struct urb *tx_urb;
111 bool tx_control;
112 unsigned char usb_rx_buf[8];
113 unsigned char usb_tx_buf[8];
114
115 struct tx_t {
116 unsigned char data_buf[35]; /* user data buffer */
117 struct completion finished; /* wait for write to finish */
118 bool busy; /* write in progress */
119 int status; /* status of tx completion */
120 } tx;
121
122 u16 vendor; /* usb vendor ID */
123 u16 product; /* usb product ID */
124
d8b4b582 125 struct rc_dev *rdev; /* rc-core device for remote */
eaf2bcc9 126 struct input_dev *idev; /* input device for panel & IR mouse */
21677cfc
JW		 127 struct input_dev *touch; /* input device for touchscreen */
128
693508df 129 spinlock_t kc_lock; /* make sure we get keycodes right */
21677cfc
JW		 130 u32 kc; /* current input keycode */
131 u32 last_keycode; /* last reported input keycode */
eaf2bcc9
DH		 132 u32 rc_scancode; /* the computed remote scancode */
133 u8 rc_toggle; /* the computed remote toggle bit */
6718e8ad 134 u64 ir_type; /* iMON or MCE (RC6) IR protocol? */
21677cfc
JW		 135 bool release_code; /* some keys send a release code */
136
137 u8 display_type; /* store the display type */
138 bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */
139
eaf2bcc9
DH		 140 char name_rdev[128]; /* rc input device name */
141 char phys_rdev[64]; /* rc input device phys path */
142
21677cfc
JW		 143 char name_idev[128]; /* input device name */
144 char phys_idev[64]; /* input device phys path */
21677cfc
JW		 145
146 char name_touch[128]; /* touch screen name */
147 char phys_touch[64]; /* touch screen phys path */
148 struct timer_list ttimer; /* touch screen timer */
149 int touch_x; /* x coordinate on touchscreen */
150 int touch_y; /* y coordinate on touchscreen */
151};
152
153#define TOUCH_TIMEOUT (HZ/30)
21677cfc
JW		 154
155/* vfd character device file operations */
156static const struct file_operations vfd_fops = {
157 .owner = THIS_MODULE,
158 .open = &display_open,
159 .write = &vfd_write,
6038f373
AB		 160 .release = &display_close,
161 .llseek = noop_llseek,
21677cfc
JW		 162};
163
164/* lcd character device file operations */
165static const struct file_operations lcd_fops = {
166 .owner = THIS_MODULE,
167 .open = &display_open,
168 .write = &lcd_write,
6038f373
AB		 169 .release = &display_close,
170 .llseek = noop_llseek,
21677cfc
JW		 171};
172
173enum {
174 IMON_DISPLAY_TYPE_AUTO = 0,
175 IMON_DISPLAY_TYPE_VFD = 1,
176 IMON_DISPLAY_TYPE_LCD = 2,
177 IMON_DISPLAY_TYPE_VGA = 3,
178 IMON_DISPLAY_TYPE_NONE = 4,
179};
180
21677cfc
JW		 181enum {
182 IMON_KEY_IMON = 0,
183 IMON_KEY_MCE = 1,
184 IMON_KEY_PANEL = 2,
185};
186
187/*
188 * USB Device ID for iMON USB Control Boards
189 *
190 * The Windows drivers contain 6 different inf files, more or less one for
191 * each new device until the 0x0034-0x0046 devices, which all use the same
192 * driver. Some of the devices in the 34-46 range haven't been definitively
193 * identified yet. Early devices have either a TriGem Computer, Inc. or a
194 * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later
195 * devices use the SoundGraph vendor ID (0x15c2). This driver only supports
196 * the ffdc and later devices, which do onboard decoding.
197 */
198static struct usb_device_id imon_usb_id_table[] = {
199 /*
200 * Several devices with this same device ID, all use iMON_PAD.inf
201 * SoundGraph iMON PAD (IR & VFD)
202 * SoundGraph iMON PAD (IR & LCD)
203 * SoundGraph iMON Knob (IR only)
204 */
205 { USB_DEVICE(0x15c2, 0xffdc) },
206
207 /*
208 * Newer devices, all driven by the latest iMON Windows driver, full
209 * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2'
210 * Need user input to fill in details on unknown devices.
211 */
212 /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */
213 { USB_DEVICE(0x15c2, 0x0034) },
214 /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */
215 { USB_DEVICE(0x15c2, 0x0035) },
216 /* SoundGraph iMON OEM VFD (IR & VFD) */
217 { USB_DEVICE(0x15c2, 0x0036) },
218 /* device specifics unknown */
219 { USB_DEVICE(0x15c2, 0x0037) },
220 /* SoundGraph iMON OEM LCD (IR & LCD) */
221 { USB_DEVICE(0x15c2, 0x0038) },
222 /* SoundGraph iMON UltraBay (IR & LCD) */
223 { USB_DEVICE(0x15c2, 0x0039) },
224 /* device specifics unknown */
225 { USB_DEVICE(0x15c2, 0x003a) },
226 /* device specifics unknown */
227 { USB_DEVICE(0x15c2, 0x003b) },
228 /* SoundGraph iMON OEM Inside (IR only) */
229 { USB_DEVICE(0x15c2, 0x003c) },
230 /* device specifics unknown */
231 { USB_DEVICE(0x15c2, 0x003d) },
232 /* device specifics unknown */
233 { USB_DEVICE(0x15c2, 0x003e) },
234 /* device specifics unknown */
235 { USB_DEVICE(0x15c2, 0x003f) },
236 /* device specifics unknown */
237 { USB_DEVICE(0x15c2, 0x0040) },
238 /* SoundGraph iMON MINI (IR only) */
239 { USB_DEVICE(0x15c2, 0x0041) },
240 /* Antec Veris Multimedia Station EZ External (IR only) */
241 { USB_DEVICE(0x15c2, 0x0042) },
242 /* Antec Veris Multimedia Station Basic Internal (IR only) */
243 { USB_DEVICE(0x15c2, 0x0043) },
244 /* Antec Veris Multimedia Station Elite (IR & VFD) */
245 { USB_DEVICE(0x15c2, 0x0044) },
246 /* Antec Veris Multimedia Station Premiere (IR & LCD) */
247 { USB_DEVICE(0x15c2, 0x0045) },
248 /* device specifics unknown */
249 { USB_DEVICE(0x15c2, 0x0046) },
250 {}
251};
252
253/* USB Device data */
254static struct usb_driver imon_driver = {
255 .name = MOD_NAME,
256 .probe = imon_probe,
257 .disconnect = imon_disconnect,
258 .suspend = imon_suspend,
259 .resume = imon_resume,
260 .id_table = imon_usb_id_table,
261};
262
263static struct usb_class_driver imon_vfd_class = {
264 .name = DEVICE_NAME,
265 .fops = &vfd_fops,
266 .minor_base = DISPLAY_MINOR_BASE,
267};
268
269static struct usb_class_driver imon_lcd_class = {
270 .name = DEVICE_NAME,
271 .fops = &lcd_fops,
272 .minor_base = DISPLAY_MINOR_BASE,
273};
274
275/* imon receiver front panel/knob key table */
276static const struct {
277 u64 hw_code;
278 u32 keycode;
279} imon_panel_key_table[] = {
1f71baef
MCC		 280 { 0x000000000f00ffeell, KEY_PROG1 }, /* Go */
281 { 0x000000001f00ffeell, KEY_AUDIO },
282 { 0x000000002000ffeell, KEY_VIDEO },
283 { 0x000000002100ffeell, KEY_CAMERA },
284 { 0x000000002700ffeell, KEY_DVD },
285 { 0x000000002300ffeell, KEY_TV },
286 { 0x000000000500ffeell, KEY_PREVIOUS },
287 { 0x000000000700ffeell, KEY_REWIND },
288 { 0x000000000400ffeell, KEY_STOP },
289 { 0x000000003c00ffeell, KEY_PLAYPAUSE },
290 { 0x000000000800ffeell, KEY_FASTFORWARD },
291 { 0x000000000600ffeell, KEY_NEXT },
292 { 0x000000010000ffeell, KEY_RIGHT },
293 { 0x000001000000ffeell, KEY_LEFT },
294 { 0x000000003d00ffeell, KEY_SELECT },
295 { 0x000100000000ffeell, KEY_VOLUMEUP },
296 { 0x010000000000ffeell, KEY_VOLUMEDOWN },
297 { 0x000000000100ffeell, KEY_MUTE },
04292fc0
JW		 298 /* 0xffdc iMON MCE VFD */
299 { 0x00010000ffffffeell, KEY_VOLUMEUP },
300 { 0x01000000ffffffeell, KEY_VOLUMEDOWN },
21677cfc 301 /* iMON Knob values */
1f71baef
MCC		 302 { 0x000100ffffffffeell, KEY_VOLUMEUP },
303 { 0x010000ffffffffeell, KEY_VOLUMEDOWN },
304 { 0x000008ffffffffeell, KEY_MUTE },
21677cfc
JW		 305};
306
307/* to prevent races between open() and disconnect(), probing, etc */
308static DEFINE_MUTEX(driver_lock);
309
310/* Module bookkeeping bits */
311MODULE_AUTHOR(MOD_AUTHOR);
312MODULE_DESCRIPTION(MOD_DESC);
313MODULE_VERSION(MOD_VERSION);
314MODULE_LICENSE("GPL");
315MODULE_DEVICE_TABLE(usb, imon_usb_id_table);
316
317static bool debug;
318module_param(debug, bool, S_IRUGO | S_IWUSR);
6aa209e4 319MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes (default: no)");
21677cfc
JW		 320
321/* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */
322static int display_type;
323module_param(display_type, int, S_IRUGO);
324MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, "
325 "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)");
326
6718e8ad
JW		 327static int pad_stabilize = 1;
328module_param(pad_stabilize, int, S_IRUGO | S_IWUSR);
329MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD "
330 "presses in arrow key mode. 0=disable, 1=enable (default).");
21677cfc
JW		 331
332/*
333 * In certain use cases, mouse mode isn't really helpful, and could actually
334 * cause confusion, so allow disabling it when the IR device is open.
335 */
336static bool nomouse;
337module_param(nomouse, bool, S_IRUGO | S_IWUSR);
338MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is "
339 "open. 0=don't disable, 1=disable. (default: don't disable)");
340
341/* threshold at which a pad push registers as an arrow key in kbd mode */
342static int pad_thresh;
343module_param(pad_thresh, int, S_IRUGO | S_IWUSR);
344MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an "
345 "arrow key in kbd mode (default: 28)");
346
347
348static void free_imon_context(struct imon_context *ictx)
349{
350 struct device *dev = ictx->dev;
351
352 usb_free_urb(ictx->tx_urb);
353 usb_free_urb(ictx->rx_urb_intf0);
354 usb_free_urb(ictx->rx_urb_intf1);
355 kfree(ictx);
356
357 dev_dbg(dev, "%s: iMON context freed\n", __func__);
358}
359
360/**
361 * Called when the Display device (e.g. /dev/lcd0)
362 * is opened by the application.
363 */
364static int display_open(struct inode *inode, struct file *file)
365{
366 struct usb_interface *interface;
367 struct imon_context *ictx = NULL;
368 int subminor;
369 int retval = 0;
370
371 /* prevent races with disconnect */
372 mutex_lock(&driver_lock);
373
374 subminor = iminor(inode);
375 interface = usb_find_interface(&imon_driver, subminor);
376 if (!interface) {
e2302501 377 pr_err("could not find interface for minor %d\n", subminor);
21677cfc
JW		 378 retval = -ENODEV;
379 goto exit;
380 }
381 ictx = usb_get_intfdata(interface);
382
383 if (!ictx) {
e2302501 384 pr_err("no context found for minor %d\n", subminor);
21677cfc
JW		 385 retval = -ENODEV;
386 goto exit;
387 }
388
389 mutex_lock(&ictx->lock);
390
391 if (!ictx->display_supported) {
e2302501 392 pr_err("display not supported by device\n");
21677cfc
JW		 393 retval = -ENODEV;
394 } else if (ictx->display_isopen) {
e2302501 395 pr_err("display port is already open\n");
21677cfc
JW		 396 retval = -EBUSY;
397 } else {
f789bf40 398 ictx->display_isopen = true;
21677cfc
JW		 399 file->private_data = ictx;
400 dev_dbg(ictx->dev, "display port opened\n");
401 }
402
403 mutex_unlock(&ictx->lock);
404
405exit:
406 mutex_unlock(&driver_lock);
407 return retval;
408}
409
410/**
411 * Called when the display device (e.g. /dev/lcd0)
412 * is closed by the application.
413 */
414static int display_close(struct inode *inode, struct file *file)
415{
416 struct imon_context *ictx = NULL;
417 int retval = 0;
418
abf84383 419 ictx = file->private_data;
21677cfc
JW		 420
421 if (!ictx) {
e2302501 422 pr_err("no context for device\n");
21677cfc
JW		 423 return -ENODEV;
424 }
425
426 mutex_lock(&ictx->lock);
427
428 if (!ictx->display_supported) {
e2302501 429 pr_err("display not supported by device\n");
21677cfc
JW		 430 retval = -ENODEV;
431 } else if (!ictx->display_isopen) {
e2302501 432 pr_err("display is not open\n");
21677cfc
JW		 433 retval = -EIO;
434 } else {
f789bf40 435 ictx->display_isopen = false;
21677cfc
JW		 436 dev_dbg(ictx->dev, "display port closed\n");
437 if (!ictx->dev_present_intf0) {
438 /*
439 * Device disconnected before close and IR port is not
440 * open. If IR port is open, context will be deleted by
441 * ir_close.
442 */
443 mutex_unlock(&ictx->lock);
444 free_imon_context(ictx);
445 return retval;
446 }
447 }
448
449 mutex_unlock(&ictx->lock);
450 return retval;
451}
452
453/**
454 * Sends a packet to the device -- this function must be called
455 * with ictx->lock held.
456 */
457static int send_packet(struct imon_context *ictx)
458{
459 unsigned int pipe;
460 unsigned long timeout;
461 int interval = 0;
462 int retval = 0;
463 struct usb_ctrlrequest *control_req = NULL;
464
465 /* Check if we need to use control or interrupt urb */
466 if (!ictx->tx_control) {
467 pipe = usb_sndintpipe(ictx->usbdev_intf0,
468 ictx->tx_endpoint->bEndpointAddress);
469 interval = ictx->tx_endpoint->bInterval;
470
471 usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe,
472 ictx->usb_tx_buf,
473 sizeof(ictx->usb_tx_buf),
474 usb_tx_callback, ictx, interval);
475
476 ictx->tx_urb->actual_length = 0;
477 } else {
478 /* fill request into kmalloc'ed space: */
479 control_req = kmalloc(sizeof(struct usb_ctrlrequest),
480 GFP_KERNEL);
481 if (control_req == NULL)
482 return -ENOMEM;
483
484 /* setup packet is '21 09 0200 0001 0008' */
485 control_req->bRequestType = 0x21;
486 control_req->bRequest = 0x09;
487 control_req->wValue = cpu_to_le16(0x0200);
488 control_req->wIndex = cpu_to_le16(0x0001);
489 control_req->wLength = cpu_to_le16(0x0008);
490
491 /* control pipe is endpoint 0x00 */
492 pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0);
493
494 /* build the control urb */
495 usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0,
496 pipe, (unsigned char *)control_req,
497 ictx->usb_tx_buf,
498 sizeof(ictx->usb_tx_buf),
499 usb_tx_callback, ictx);
500 ictx->tx_urb->actual_length = 0;
501 }
502
503 init_completion(&ictx->tx.finished);
f789bf40 504 ictx->tx.busy = true;
21677cfc
JW		 505 smp_rmb(); /* ensure later readers know we're busy */
506
507 retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL);
508 if (retval) {
f789bf40 509 ictx->tx.busy = false;
21677cfc 510 smp_rmb(); /* ensure later readers know we're not busy */
e2302501 511 pr_err("error submitting urb(%d)\n", retval);
21677cfc
JW		 512 } else {
513 /* Wait for transmission to complete (or abort) */
514 mutex_unlock(&ictx->lock);
515 retval = wait_for_completion_interruptible(
516 &ictx->tx.finished);
517 if (retval)
e2302501 518 pr_err("task interrupted\n");
21677cfc
JW		 519 mutex_lock(&ictx->lock);
520
521 retval = ictx->tx.status;
522 if (retval)
e2302501 523 pr_err("packet tx failed (%d)\n", retval);
21677cfc
JW		 524 }
525
526 kfree(control_req);
527
528 /*
529 * Induce a mandatory 5ms delay before returning, as otherwise,
530 * send_packet can get called so rapidly as to overwhelm the device,
531 * particularly on faster systems and/or those with quirky usb.
532 */
533 timeout = msecs_to_jiffies(5);
534 set_current_state(TASK_UNINTERRUPTIBLE);
535 schedule_timeout(timeout);
536
537 return retval;
538}
539
540/**
541 * Sends an associate packet to the iMON 2.4G.
542 *
543 * This might not be such a good idea, since it has an id collision with
544 * some versions of the "IR & VFD" combo. The only way to determine if it
545 * is an RF version is to look at the product description string. (Which
546 * we currently do not fetch).
547 */
548static int send_associate_24g(struct imon_context *ictx)
549{
550 int retval;
551 const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00,
552 0x00, 0x00, 0x00, 0x20 };
553
554 if (!ictx) {
e2302501 555 pr_err("no context for device\n");
21677cfc
JW		 556 return -ENODEV;
557 }
558
559 if (!ictx->dev_present_intf0) {
e2302501 560 pr_err("no iMON device present\n");
21677cfc
JW		 561 return -ENODEV;
562 }
563
564 memcpy(ictx->usb_tx_buf, packet, sizeof(packet));
565 retval = send_packet(ictx);
566
567 return retval;
568}
569
570/**
571 * Sends packets to setup and show clock on iMON display
572 *
573 * Arguments: year - last 2 digits of year, month - 1..12,
574 * day - 1..31, dow - day of the week (0-Sun...6-Sat),
575 * hour - 0..23, minute - 0..59, second - 0..59
576 */
577static int send_set_imon_clock(struct imon_context *ictx,
578 unsigned int year, unsigned int month,
579 unsigned int day, unsigned int dow,
580 unsigned int hour, unsigned int minute,
581 unsigned int second)
582{
583 unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8];
584 int retval = 0;
585 int i;
586
587 if (!ictx) {
e2302501 588 pr_err("no context for device\n");
21677cfc
JW		 589 return -ENODEV;
590 }
591
592 switch (ictx->display_type) {
593 case IMON_DISPLAY_TYPE_LCD:
594 clock_enable_pkt[0][0] = 0x80;
595 clock_enable_pkt[0][1] = year;
596 clock_enable_pkt[0][2] = month-1;
597 clock_enable_pkt[0][3] = day;
598 clock_enable_pkt[0][4] = hour;
599 clock_enable_pkt[0][5] = minute;
600 clock_enable_pkt[0][6] = second;
601
602 clock_enable_pkt[1][0] = 0x80;
603 clock_enable_pkt[1][1] = 0;
604 clock_enable_pkt[1][2] = 0;
605 clock_enable_pkt[1][3] = 0;
606 clock_enable_pkt[1][4] = 0;
607 clock_enable_pkt[1][5] = 0;
608 clock_enable_pkt[1][6] = 0;
609
610 if (ictx->product == 0xffdc) {
611 clock_enable_pkt[0][7] = 0x50;
612 clock_enable_pkt[1][7] = 0x51;
613 } else {
614 clock_enable_pkt[0][7] = 0x88;
615 clock_enable_pkt[1][7] = 0x8a;
616 }
617
618 break;
619
620 case IMON_DISPLAY_TYPE_VFD:
621 clock_enable_pkt[0][0] = year;
622 clock_enable_pkt[0][1] = month-1;
623 clock_enable_pkt[0][2] = day;
624 clock_enable_pkt[0][3] = dow;
625 clock_enable_pkt[0][4] = hour;
626 clock_enable_pkt[0][5] = minute;
627 clock_enable_pkt[0][6] = second;
628 clock_enable_pkt[0][7] = 0x40;
629
630 clock_enable_pkt[1][0] = 0;
631 clock_enable_pkt[1][1] = 0;
632 clock_enable_pkt[1][2] = 1;
633 clock_enable_pkt[1][3] = 0;
634 clock_enable_pkt[1][4] = 0;
635 clock_enable_pkt[1][5] = 0;
636 clock_enable_pkt[1][6] = 0;
637 clock_enable_pkt[1][7] = 0x42;
638
639 break;
640
641 default:
642 return -ENODEV;
643 }
644
645 for (i = 0; i < IMON_CLOCK_ENABLE_PACKETS; i++) {
646 memcpy(ictx->usb_tx_buf, clock_enable_pkt[i], 8);
647 retval = send_packet(ictx);
648 if (retval) {
e2302501 649 pr_err("send_packet failed for packet %d\n", i);
21677cfc
JW		 650 break;
651 }
652 }
653
654 return retval;
655}
656
657/**
658 * These are the sysfs functions to handle the association on the iMON 2.4G LT.
659 */
660static ssize_t show_associate_remote(struct device *d,
661 struct device_attribute *attr,
662 char *buf)
663{
664 struct imon_context *ictx = dev_get_drvdata(d);
665
666 if (!ictx)
667 return -ENODEV;
668
669 mutex_lock(&ictx->lock);
670 if (ictx->rf_isassociating)
671 strcpy(buf, "associating\n");
672 else
673 strcpy(buf, "closed\n");
674
675 dev_info(d, "Visit http://www.lirc.org/html/imon-24g.html for "
676 "instructions on how to associate your iMON 2.4G DT/LT "
677 "remote\n");
678 mutex_unlock(&ictx->lock);
679 return strlen(buf);
680}
681
682static ssize_t store_associate_remote(struct device *d,
683 struct device_attribute *attr,
684 const char *buf, size_t count)
685{
686 struct imon_context *ictx;
687
688 ictx = dev_get_drvdata(d);
689
690 if (!ictx)
691 return -ENODEV;
692
693 mutex_lock(&ictx->lock);
f789bf40 694 ictx->rf_isassociating = true;
21677cfc
JW		 695 send_associate_24g(ictx);
696 mutex_unlock(&ictx->lock);
697
698 return count;
699}
700
701/**
702 * sysfs functions to control internal imon clock
703 */
704static ssize_t show_imon_clock(struct device *d,
705 struct device_attribute *attr, char *buf)
706{
707 struct imon_context *ictx = dev_get_drvdata(d);
708 size_t len;
709
710 if (!ictx)
711 return -ENODEV;
712
713 mutex_lock(&ictx->lock);
714
715 if (!ictx->display_supported) {
716 len = snprintf(buf, PAGE_SIZE, "Not supported.");
717 } else {
718 len = snprintf(buf, PAGE_SIZE,
719 "To set the clock on your iMON display:\n"
720 "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n"
721 "%s", ictx->display_isopen ?
722 "\nNOTE: imon device must be closed\n" : "");
723 }
724
725 mutex_unlock(&ictx->lock);
726
727 return len;
728}
729
730static ssize_t store_imon_clock(struct device *d,
731 struct device_attribute *attr,
732 const char *buf, size_t count)
733{
734 struct imon_context *ictx = dev_get_drvdata(d);
735 ssize_t retval;
736 unsigned int year, month, day, dow, hour, minute, second;
737
738 if (!ictx)
739 return -ENODEV;
740
741 mutex_lock(&ictx->lock);
742
743 if (!ictx->display_supported) {
744 retval = -ENODEV;
745 goto exit;
746 } else if (ictx->display_isopen) {
747 retval = -EBUSY;
748 goto exit;
749 }
750
751 if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow,
752 &hour, &minute, &second) != 7) {
753 retval = -EINVAL;
754 goto exit;
755 }
756
757 if ((month < 1 || month > 12) ||
758 (day < 1 || day > 31) || (dow > 6) ||
759 (hour > 23) || (minute > 59) || (second > 59)) {
760 retval = -EINVAL;
761 goto exit;
762 }
763
764 retval = send_set_imon_clock(ictx, year, month, day, dow,
765 hour, minute, second);
766 if (retval)
767 goto exit;
768
769 retval = count;
770exit:
771 mutex_unlock(&ictx->lock);
772
773 return retval;
774}
775
776
777static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock,
778 store_imon_clock);
779
780static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote,
781 store_associate_remote);
782
783static struct attribute *imon_display_sysfs_entries[] = {
784 &dev_attr_imon_clock.attr,
785 NULL
786};
787
6aa209e4 788static struct attribute_group imon_display_attr_group = {
21677cfc
JW		 789 .attrs = imon_display_sysfs_entries
790};
791
792static struct attribute *imon_rf_sysfs_entries[] = {
793 &dev_attr_associate_remote.attr,
794 NULL
795};
796
6aa209e4 797static struct attribute_group imon_rf_attr_group = {
21677cfc
JW		 798 .attrs = imon_rf_sysfs_entries
799};
800
801/**
802 * Writes data to the VFD. The iMON VFD is 2x16 characters
803 * and requires data in 5 consecutive USB interrupt packets,
804 * each packet but the last carrying 7 bytes.
805 *
806 * I don't know if the VFD board supports features such as
807 * scrolling, clearing rows, blanking, etc. so at
808 * the caller must provide a full screen of data. If fewer
809 * than 32 bytes are provided spaces will be appended to
810 * generate a full screen.
811 */
812static ssize_t vfd_write(struct file *file, const char *buf,
813 size_t n_bytes, loff_t *pos)
814{
815 int i;
816 int offset;
817 int seq;
818 int retval = 0;
819 struct imon_context *ictx;
820 const unsigned char vfd_packet6[] = {
821 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
822
abf84383 823 ictx = file->private_data;
21677cfc 824 if (!ictx) {
e2302501 825 pr_err("no context for device\n");
21677cfc
JW		 826 return -ENODEV;
827 }
828
829 mutex_lock(&ictx->lock);
830
831 if (!ictx->dev_present_intf0) {
e2302501 832 pr_err("no iMON device present\n");
21677cfc
JW		 833 retval = -ENODEV;
834 goto exit;
835 }
836
837 if (n_bytes <= 0 || n_bytes > 32) {
e2302501 838 pr_err("invalid payload size\n");
21677cfc
JW		 839 retval = -EINVAL;
840 goto exit;
841 }
842
843 if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) {
844 retval = -EFAULT;
845 goto exit;
846 }
847
848 /* Pad with spaces */
849 for (i = n_bytes; i < 32; ++i)
850 ictx->tx.data_buf[i] = ' ';
851
852 for (i = 32; i < 35; ++i)
853 ictx->tx.data_buf[i] = 0xFF;
854
855 offset = 0;
856 seq = 0;
857
858 do {
859 memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7);
860 ictx->usb_tx_buf[7] = (unsigned char) seq;
861
862 retval = send_packet(ictx);
863 if (retval) {
e2302501 864 pr_err("send packet failed for packet #%d\n", seq / 2);
21677cfc
JW		 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)
e2302501 878 pr_err("send packet failed for packet #%d\n", seq / 2);
21677cfc
JW		 879
880exit:
881 mutex_unlock(&ictx->lock);
882
883 return (!retval) ? n_bytes : retval;
884}
885
886/**
887 * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte
888 * packets. We accept data as 16 hexadecimal digits, followed by a
889 * newline (to make it easy to drive the device from a command-line
890 * -- even though the actual binary data is a bit complicated).
891 *
892 * The device itself is not a "traditional" text-mode display. It's
893 * actually a 16x96 pixel bitmap display. That means if you want to
894 * display text, you've got to have your own "font" and translate the
895 * text into bitmaps for display. This is really flexible (you can
896 * display whatever diacritics you need, and so on), but it's also
897 * a lot more complicated than most LCDs...
898 */
899static ssize_t lcd_write(struct file *file, const char *buf,
900 size_t n_bytes, loff_t *pos)
901{
902 int retval = 0;
903 struct imon_context *ictx;
904
abf84383 905 ictx = file->private_data;
21677cfc 906 if (!ictx) {
e2302501 907 pr_err("no context for device\n");
21677cfc
JW		 908 return -ENODEV;
909 }
910
911 mutex_lock(&ictx->lock);
912
913 if (!ictx->display_supported) {
e2302501 914 pr_err("no iMON display present\n");
21677cfc
JW		 915 retval = -ENODEV;
916 goto exit;
917 }
918
919 if (n_bytes != 8) {
e2302501 920 pr_err("invalid payload size: %d (expected 8)\n", (int)n_bytes);
21677cfc
JW		 921 retval = -EINVAL;
922 goto exit;
923 }
924
925 if (copy_from_user(ictx->usb_tx_buf, buf, 8)) {
926 retval = -EFAULT;
927 goto exit;
928 }
929
930 retval = send_packet(ictx);
931 if (retval) {
e2302501 932 pr_err("send packet failed!\n");
21677cfc
JW		 933 goto exit;
934 } else {
935 dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n",
936 __func__, (int) n_bytes);
937 }
938exit:
939 mutex_unlock(&ictx->lock);
940 return (!retval) ? n_bytes : retval;
941}
942
943/**
944 * Callback function for USB core API: transmit data
945 */
946static void usb_tx_callback(struct urb *urb)
947{
948 struct imon_context *ictx;
949
950 if (!urb)
951 return;
952 ictx = (struct imon_context *)urb->context;
953 if (!ictx)
954 return;
955
956 ictx->tx.status = urb->status;
957
958 /* notify waiters that write has finished */
f789bf40 959 ictx->tx.busy = false;
21677cfc
JW		 960 smp_rmb(); /* ensure later readers know we're not busy */
961 complete(&ictx->tx.finished);
962}
963
21677cfc
JW		 964/**
965 * report touchscreen input
966 */
967static void imon_touch_display_timeout(unsigned long data)
968{
969 struct imon_context *ictx = (struct imon_context *)data;
970
f03900d6 971 if (ictx->display_type != IMON_DISPLAY_TYPE_VGA)
21677cfc
JW		 972 return;
973
974 input_report_abs(ictx->touch, ABS_X, ictx->touch_x);
975 input_report_abs(ictx->touch, ABS_Y, ictx->touch_y);
976 input_report_key(ictx->touch, BTN_TOUCH, 0x00);
977 input_sync(ictx->touch);
978}
979
980/**
981 * iMON IR receivers support two different signal sets -- those used by
982 * the iMON remotes, and those used by the Windows MCE remotes (which is
983 * really just RC-6), but only one or the other at a time, as the signals
984 * are decoded onboard the receiver.
985 */
d8b4b582 986static int imon_ir_change_protocol(struct rc_dev *rc, u64 ir_type)
21677cfc
JW		 987{
988 int retval;
d8b4b582 989 struct imon_context *ictx = rc->priv;
21677cfc 990 struct device *dev = ictx->dev;
6718e8ad 991 bool pad_mouse;
21677cfc
JW		 992 unsigned char ir_proto_packet[] = {
993 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 };
994
d8b4b582 995 if (ir_type && !(ir_type & rc->allowed_protos))
21677cfc
JW		 996 dev_warn(dev, "Looks like you're trying to use an IR protocol "
997 "this device does not support\n");
998
6718e8ad
JW		 999 switch (ir_type) {
1000 case IR_TYPE_RC6:
21677cfc
JW		 1001 dev_dbg(dev, "Configuring IR receiver for MCE protocol\n");
1002 ir_proto_packet[0] = 0x01;
6718e8ad 1003 pad_mouse = false;
21677cfc 1004 break;
6718e8ad
JW		 1005 case IR_TYPE_UNKNOWN:
1006 case IR_TYPE_OTHER:
666a9ed8 1007 dev_dbg(dev, "Configuring IR receiver for iMON protocol\n");
52fae5ee 1008 if (pad_stabilize && !nomouse)
6718e8ad 1009 pad_mouse = true;
666a9ed8
JW		 1010 else {
1011 dev_dbg(dev, "PAD stabilize functionality disabled\n");
6718e8ad
JW		 1012 pad_mouse = false;
1013 }
21677cfc 1014 /* ir_proto_packet[0] = 0x00; // already the default */
6718e8ad 1015 ir_type = IR_TYPE_OTHER;
21677cfc
JW		 1016 break;
1017 default:
6718e8ad 1018 dev_warn(dev, "Unsupported IR protocol specified, overriding "
666a9ed8 1019 "to iMON IR protocol\n");
52fae5ee 1020 if (pad_stabilize && !nomouse)
6718e8ad 1021 pad_mouse = true;
666a9ed8
JW		 1022 else {
1023 dev_dbg(dev, "PAD stabilize functionality disabled\n");
6718e8ad
JW		 1024 pad_mouse = false;
1025 }
1026 /* ir_proto_packet[0] = 0x00; // already the default */
1027 ir_type = IR_TYPE_OTHER;
21677cfc
JW		 1028 break;
1029 }
1030
1031 memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet));
1032
1033 retval = send_packet(ictx);
6718e8ad
JW		 1034 if (retval)
1035 goto out;
1036
1037 ictx->ir_type = ir_type;
1038 ictx->pad_mouse = pad_mouse;
1039
1040out:
1041 return retval;
21677cfc
JW		 1042}
1043
1044static inline int tv2int(const struct timeval *a, const struct timeval *b)
1045{
1046 int usecs = 0;
1047 int sec = 0;
1048
1049 if (b->tv_usec > a->tv_usec) {
1050 usecs = 1000000;
1051 sec--;
1052 }
1053
1054 usecs += a->tv_usec - b->tv_usec;
1055
1056 sec += a->tv_sec - b->tv_sec;
1057 sec *= 1000;
1058 usecs /= 1000;
1059 sec += usecs;
1060
1061 if (sec < 0)
1062 sec = 1000;
1063
1064 return sec;
1065}
1066
1067/**
1068 * The directional pad behaves a bit differently, depending on whether this is
1069 * one of the older ffdc devices or a newer device. Newer devices appear to
1070 * have a higher resolution matrix for more precise mouse movement, but it
1071 * makes things overly sensitive in keyboard mode, so we do some interesting
1072 * contortions to make it less touchy. Older devices run through the same
1073 * routine with shorter timeout and a smaller threshold.
1074 */
1075static int stabilize(int a, int b, u16 timeout, u16 threshold)
1076{
1077 struct timeval ct;
1078 static struct timeval prev_time = {0, 0};
1079 static struct timeval hit_time = {0, 0};
1080 static int x, y, prev_result, hits;
1081 int result = 0;
1082 int msec, msec_hit;
1083
1084 do_gettimeofday(&ct);
1085 msec = tv2int(&ct, &prev_time);
1086 msec_hit = tv2int(&ct, &hit_time);
1087
1088 if (msec > 100) {
1089 x = 0;
1090 y = 0;
1091 hits = 0;
1092 }
1093
1094 x += a;
1095 y += b;
1096
1097 prev_time = ct;
1098
1099 if (abs(x) > threshold || abs(y) > threshold) {
1100 if (abs(y) > abs(x))
1101 result = (y > 0) ? 0x7F : 0x80;
1102 else
1103 result = (x > 0) ? 0x7F00 : 0x8000;
1104
1105 x = 0;
1106 y = 0;
1107
1108 if (result == prev_result) {
1109 hits++;
1110
1111 if (hits > 3) {
1112 switch (result) {
1113 case 0x7F:
1114 y = 17 * threshold / 30;
1115 break;
1116 case 0x80:
1117 y -= 17 * threshold / 30;
1118 break;
1119 case 0x7F00:
1120 x = 17 * threshold / 30;
1121 break;
1122 case 0x8000:
1123 x -= 17 * threshold / 30;
1124 break;
1125 }
1126 }
1127
1128 if (hits == 2 && msec_hit < timeout) {
1129 result = 0;
1130 hits = 1;
1131 }
1132 } else {
1133 prev_result = result;
1134 hits = 1;
1135 hit_time = ct;
1136 }
1137 }
1138
1139 return result;
1140}
1141
eaf2bcc9 1142static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 scancode)
21677cfc 1143{
21677cfc
JW		 1144 u32 keycode;
1145 u32 release;
1146 bool is_release_code = false;
1147
1148 /* Look for the initial press of a button */
eaf2bcc9
DH		 1149 keycode = ir_g_keycode_from_table(ictx->rdev, scancode);
1150 ictx->rc_toggle = 0x0;
1151 ictx->rc_scancode = scancode;
21677cfc
JW		 1152
1153 /* Look for the release of a button */
1154 if (keycode == KEY_RESERVED) {
1155 release = scancode & ~0x4000;
eaf2bcc9 1156 keycode = ir_g_keycode_from_table(ictx->rdev, release);
21677cfc
JW		 1157 if (keycode != KEY_RESERVED)
1158 is_release_code = true;
1159 }
1160
1161 ictx->release_code = is_release_code;
1162
1163 return keycode;
1164}
1165
eaf2bcc9 1166static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 scancode)
21677cfc 1167{
21677cfc
JW		 1168 u32 keycode;
1169
1170#define MCE_KEY_MASK 0x7000
1171#define MCE_TOGGLE_BIT 0x8000
1172
1173 /*
1174 * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx
1175 * (the toggle bit flipping between alternating key presses), while
1176 * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep
1177 * the table trim, we always or in the bits to look up 0x8000ff4xx,
1178 * but we can't or them into all codes, as some keys are decoded in
1179 * a different way w/o the same use of the toggle bit...
1180 */
eaf2bcc9 1181 if (scancode & 0x80000000)
21677cfc
JW		 1182 scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT;
1183
eaf2bcc9
DH		 1184 ictx->rc_scancode = scancode;
1185 keycode = ir_g_keycode_from_table(ictx->rdev, scancode);
1186
1187 /* not used in mce mode, but make sure we know its false */
1188 ictx->release_code = false;
21677cfc
JW		 1189
1190 return keycode;
1191}
1192
eaf2bcc9 1193static u32 imon_panel_key_lookup(u64 code)
21677cfc
JW		 1194{
1195 int i;
083e4721 1196 u32 keycode = KEY_RESERVED;
21677cfc 1197
083e4721
JW		 1198 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
1199 if (imon_panel_key_table[i].hw_code == (code | 0xffee)) {
1200 keycode = imon_panel_key_table[i].keycode;
21677cfc 1201 break;
083e4721
JW		 1202 }
1203 }
21677cfc
JW		 1204
1205 return keycode;
1206}
1207
1208static bool imon_mouse_event(struct imon_context *ictx,
1209 unsigned char *buf, int len)
1210{
1211 char rel_x = 0x00, rel_y = 0x00;
1212 u8 right_shift = 1;
f789bf40 1213 bool mouse_input = true;
21677cfc 1214 int dir = 0;
693508df
JW		 1215 unsigned long flags;
1216
1217 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1218
1219 /* newer iMON device PAD or mouse button */
1220 if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) {
1221 rel_x = buf[2];
1222 rel_y = buf[3];
1223 right_shift = 1;
1224 /* 0xffdc iMON PAD or mouse button input */
1225 } else if (ictx->product == 0xffdc && (buf[0] & 0x40) &&
1226 !((buf[1] & 0x01) || ((buf[1] >> 2) & 0x01))) {
1227 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1228 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1229 if (buf[0] & 0x02)
1230 rel_x |= ~0x0f;
1231 rel_x = rel_x + rel_x / 2;
1232 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1233 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1234 if (buf[0] & 0x01)
1235 rel_y |= ~0x0f;
1236 rel_y = rel_y + rel_y / 2;
1237 right_shift = 2;
1238 /* some ffdc devices decode mouse buttons differently... */
1239 } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) {
1240 right_shift = 2;
1241 /* ch+/- buttons, which we use for an emulated scroll wheel */
1242 } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) {
1243 dir = 1;
1244 } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) {
1245 dir = -1;
1246 } else
f789bf40 1247 mouse_input = false;
21677cfc 1248
693508df
JW		 1249 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1250
21677cfc
JW		 1251 if (mouse_input) {
1252 dev_dbg(ictx->dev, "sending mouse data via input subsystem\n");
1253
1254 if (dir) {
1255 input_report_rel(ictx->idev, REL_WHEEL, dir);
1256 } else if (rel_x || rel_y) {
1257 input_report_rel(ictx->idev, REL_X, rel_x);
1258 input_report_rel(ictx->idev, REL_Y, rel_y);
1259 } else {
1260 input_report_key(ictx->idev, BTN_LEFT, buf[1] & 0x1);
1261 input_report_key(ictx->idev, BTN_RIGHT,
1262 buf[1] >> right_shift & 0x1);
1263 }
1264 input_sync(ictx->idev);
693508df 1265 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc 1266 ictx->last_keycode = ictx->kc;
693508df 1267 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1268 }
1269
1270 return mouse_input;
1271}
1272
1273static void imon_touch_event(struct imon_context *ictx, unsigned char *buf)
1274{
1275 mod_timer(&ictx->ttimer, jiffies + TOUCH_TIMEOUT);
1276 ictx->touch_x = (buf[0] << 4) | (buf[1] >> 4);
1277 ictx->touch_y = 0xfff - ((buf[2] << 4) | (buf[1] & 0xf));
1278 input_report_abs(ictx->touch, ABS_X, ictx->touch_x);
1279 input_report_abs(ictx->touch, ABS_Y, ictx->touch_y);
1280 input_report_key(ictx->touch, BTN_TOUCH, 0x01);
1281 input_sync(ictx->touch);
1282}
1283
1284static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf)
1285{
1286 int dir = 0;
1287 char rel_x = 0x00, rel_y = 0x00;
1288 u16 timeout, threshold;
eaf2bcc9 1289 u32 scancode = KEY_RESERVED;
693508df 1290 unsigned long flags;
21677cfc
JW		 1291
1292 /*
1293 * The imon directional pad functions more like a touchpad. Bytes 3 & 4
1294 * contain a position coordinate (x,y), with each component ranging
1295 * from -14 to 14. We want to down-sample this to only 4 discrete values
1296 * for up/down/left/right arrow keys. Also, when you get too close to
1297 * diagonals, it has a tendancy to jump back and forth, so lets try to
1298 * ignore when they get too close.
1299 */
1300 if (ictx->product != 0xffdc) {
1301 /* first, pad to 8 bytes so it conforms with everything else */
1302 buf[5] = buf[6] = buf[7] = 0;
1303 timeout = 500; /* in msecs */
1304 /* (2*threshold) x (2*threshold) square */
1305 threshold = pad_thresh ? pad_thresh : 28;
1306 rel_x = buf[2];
1307 rel_y = buf[3];
1308
6718e8ad 1309 if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) {
21677cfc
JW		 1310 if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) {
1311 dir = stabilize((int)rel_x, (int)rel_y,
1312 timeout, threshold);
1313 if (!dir) {
693508df
JW		 1314 spin_lock_irqsave(&ictx->kc_lock,
1315 flags);
21677cfc 1316 ictx->kc = KEY_UNKNOWN;
693508df
JW		 1317 spin_unlock_irqrestore(&ictx->kc_lock,
1318 flags);
21677cfc
JW		 1319 return;
1320 }
1321 buf[2] = dir & 0xFF;
1322 buf[3] = (dir >> 8) & 0xFF;
eaf2bcc9 1323 scancode = be32_to_cpu(*((u32 *)buf));
21677cfc
JW		 1324 }
1325 } else {
eaf2bcc9
DH		 1326 /*
1327 * Hack alert: instead of using keycodes, we have
1328 * to use hard-coded scancodes here...
1329 */
21677cfc
JW		 1330 if (abs(rel_y) > abs(rel_x)) {
1331 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1332 buf[3] = 0;
eaf2bcc9
DH		 1333 if (rel_y > 0)
1334 scancode = 0x01007f00; /* KEY_DOWN */
1335 else
1336 scancode = 0x01008000; /* KEY_UP */
21677cfc
JW		 1337 } else {
1338 buf[2] = 0;
1339 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
eaf2bcc9
DH		 1340 if (rel_x > 0)
1341 scancode = 0x0100007f; /* KEY_RIGHT */
1342 else
1343 scancode = 0x01000080; /* KEY_LEFT */
21677cfc
JW		 1344 }
1345 }
1346
1347 /*
1348 * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad
1349 * device (15c2:ffdc). The remote generates various codes from
1350 * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates
1351 * 0x688301b7 and the right one 0x688481b7. All other keys generate
1352 * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with
1353 * reversed endianess. Extract direction from buffer, rotate endianess,
1354 * adjust sign and feed the values into stabilize(). The resulting codes
1355 * will be 0x01008000, 0x01007F00, which match the newer devices.
1356 */
1357 } else {
1358 timeout = 10; /* in msecs */
1359 /* (2*threshold) x (2*threshold) square */
1360 threshold = pad_thresh ? pad_thresh : 15;
1361
1362 /* buf[1] is x */
1363 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1364 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1365 if (buf[0] & 0x02)
1366 rel_x |= ~0x10+1;
1367 /* buf[2] is y */
1368 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1369 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1370 if (buf[0] & 0x01)
1371 rel_y |= ~0x10+1;
1372
1373 buf[0] = 0x01;
1374 buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0;
1375
6718e8ad 1376 if (ictx->ir_type == IR_TYPE_OTHER && pad_stabilize) {
21677cfc
JW		 1377 dir = stabilize((int)rel_x, (int)rel_y,
1378 timeout, threshold);
1379 if (!dir) {
693508df 1380 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc 1381 ictx->kc = KEY_UNKNOWN;
693508df 1382 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1383 return;
1384 }
1385 buf[2] = dir & 0xFF;
1386 buf[3] = (dir >> 8) & 0xFF;
eaf2bcc9 1387 scancode = be32_to_cpu(*((u32 *)buf));
21677cfc 1388 } else {
eaf2bcc9
DH		 1389 /*
1390 * Hack alert: instead of using keycodes, we have
1391 * to use hard-coded scancodes here...
1392 */
21677cfc
JW		 1393 if (abs(rel_y) > abs(rel_x)) {
1394 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1395 buf[3] = 0;
eaf2bcc9
DH		 1396 if (rel_y > 0)
1397 scancode = 0x01007f00; /* KEY_DOWN */
1398 else
1399 scancode = 0x01008000; /* KEY_UP */
21677cfc
JW		 1400 } else {
1401 buf[2] = 0;
1402 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
eaf2bcc9
DH		 1403 if (rel_x > 0)
1404 scancode = 0x0100007f; /* KEY_RIGHT */
1405 else
1406 scancode = 0x01000080; /* KEY_LEFT */
21677cfc
JW		 1407 }
1408 }
1409 }
eaf2bcc9 1410
693508df
JW		 1411 if (scancode) {
1412 spin_lock_irqsave(&ictx->kc_lock, flags);
eaf2bcc9 1413 ictx->kc = imon_remote_key_lookup(ictx, scancode);
693508df
JW		 1414 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1415 }
21677cfc
JW		 1416}
1417
eaf2bcc9
DH		 1418/**
1419 * figure out if these is a press or a release. We don't actually
1420 * care about repeats, as those will be auto-generated within the IR
1421 * subsystem for repeating scancodes.
1422 */
21677cfc
JW		 1423static int imon_parse_press_type(struct imon_context *ictx,
1424 unsigned char *buf, u8 ktype)
1425{
1426 int press_type = 0;
693508df
JW		 1427 unsigned long flags;
1428
1429 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1430
1431 /* key release of 0x02XXXXXX key */
1432 if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00)
1433 ictx->kc = ictx->last_keycode;
1434
1435 /* mouse button release on (some) 0xffdc devices */
1436 else if (ictx->kc == KEY_RESERVED && buf[0] == 0x68 && buf[1] == 0x82 &&
1437 buf[2] == 0x81 && buf[3] == 0xb7)
1438 ictx->kc = ictx->last_keycode;
1439
1440 /* mouse button release on (some other) 0xffdc devices */
1441 else if (ictx->kc == KEY_RESERVED && buf[0] == 0x01 && buf[1] == 0x00 &&
1442 buf[2] == 0x81 && buf[3] == 0xb7)
1443 ictx->kc = ictx->last_keycode;
1444
eaf2bcc9 1445 /* mce-specific button handling, no keyup events */
21677cfc 1446 else if (ktype == IMON_KEY_MCE) {
eaf2bcc9
DH		 1447 ictx->rc_toggle = buf[2];
1448 press_type = 1;
21677cfc
JW		 1449
1450 /* incoherent or irrelevant data */
1451 } else if (ictx->kc == KEY_RESERVED)
1452 press_type = -EINVAL;
1453
1454 /* key release of 0xXXXXXXb7 key */
1455 else if (ictx->release_code)
1456 press_type = 0;
1457
1458 /* this is a button press */
1459 else
1460 press_type = 1;
1461
693508df
JW		 1462 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1463
21677cfc
JW		 1464 return press_type;
1465}
1466
1467/**
1468 * Process the incoming packet
1469 */
1470static void imon_incoming_packet(struct imon_context *ictx,
1471 struct urb *urb, int intf)
1472{
1473 int len = urb->actual_length;
1474 unsigned char *buf = urb->transfer_buffer;
1475 struct device *dev = ictx->dev;
693508df 1476 unsigned long flags;
21677cfc 1477 u32 kc;
f789bf40 1478 bool norelease = false;
21677cfc 1479 int i;
eaf2bcc9 1480 u64 scancode;
21677cfc
JW		 1481 int press_type = 0;
1482 int msec;
1483 struct timeval t;
1484 static struct timeval prev_time = { 0, 0 };
eaf2bcc9 1485 u8 ktype;
21677cfc 1486
21677cfc 1487 /* filter out junk data on the older 0xffdc imon devices */
bbe4690f 1488 if ((buf[0] == 0xff) && (buf[1] == 0xff) && (buf[2] == 0xff))
21677cfc
JW		 1489 return;
1490
1491 /* Figure out what key was pressed */
21677cfc 1492 if (len == 8 && buf[7] == 0xee) {
eaf2bcc9 1493 scancode = be64_to_cpu(*((u64 *)buf));
21677cfc 1494 ktype = IMON_KEY_PANEL;
eaf2bcc9 1495 kc = imon_panel_key_lookup(scancode);
21677cfc 1496 } else {
eaf2bcc9 1497 scancode = be32_to_cpu(*((u32 *)buf));
6718e8ad 1498 if (ictx->ir_type == IR_TYPE_RC6) {
eaf2bcc9 1499 ktype = IMON_KEY_IMON;
21677cfc
JW		 1500 if (buf[0] == 0x80)
1501 ktype = IMON_KEY_MCE;
eaf2bcc9
DH		 1502 kc = imon_mce_key_lookup(ictx, scancode);
1503 } else {
1504 ktype = IMON_KEY_IMON;
1505 kc = imon_remote_key_lookup(ictx, scancode);
1506 }
21677cfc
JW		 1507 }
1508
693508df 1509 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1510 /* keyboard/mouse mode toggle button */
1511 if (kc == KEY_KEYBOARD && !ictx->release_code) {
1512 ictx->last_keycode = kc;
1513 if (!nomouse) {
1514 ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1;
1515 dev_dbg(dev, "toggling to %s mode\n",
1516 ictx->pad_mouse ? "mouse" : "keyboard");
693508df 1517 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1518 return;
1519 } else {
1520 ictx->pad_mouse = 0;
1521 dev_dbg(dev, "mouse mode disabled, passing key value\n");
1522 }
1523 }
1524
1525 ictx->kc = kc;
693508df 1526 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc
JW		 1527
1528 /* send touchscreen events through input subsystem if touchpad data */
1529 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 &&
1530 buf[7] == 0x86) {
1531 imon_touch_event(ictx, buf);
eaf2bcc9 1532 return;
21677cfc
JW		 1533
1534 /* look for mouse events with pad in mouse mode */
1535 } else if (ictx->pad_mouse) {
1536 if (imon_mouse_event(ictx, buf, len))
1537 return;
1538 }
1539
1540 /* Now for some special handling to convert pad input to arrow keys */
1541 if (((len == 5) && (buf[0] == 0x01) && (buf[4] == 0x00)) ||
1542 ((len == 8) && (buf[0] & 0x40) &&
1543 !(buf[1] & 0x1 || buf[1] >> 2 & 0x1))) {
1544 len = 8;
1545 imon_pad_to_keys(ictx, buf);
f789bf40 1546 norelease = true;
21677cfc
JW		 1547 }
1548
1549 if (debug) {
1550 printk(KERN_INFO "intf%d decoded packet: ", intf);
1551 for (i = 0; i < len; ++i)
1552 printk("%02x ", buf[i]);
1553 printk("\n");
1554 }
1555
1556 press_type = imon_parse_press_type(ictx, buf, ktype);
1557 if (press_type < 0)
1558 goto not_input_data;
1559
693508df 1560 spin_lock_irqsave(&ictx->kc_lock, flags);
21677cfc
JW		 1561 if (ictx->kc == KEY_UNKNOWN)
1562 goto unknown_key;
693508df 1563 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1564
eaf2bcc9
DH		 1565 if (ktype != IMON_KEY_PANEL) {
1566 if (press_type == 0)
62c65031 1567 ir_keyup(ictx->rdev);
eaf2bcc9 1568 else {
62c65031 1569 ir_keydown(ictx->rdev, ictx->rc_scancode, ictx->rc_toggle);
693508df 1570 spin_lock_irqsave(&ictx->kc_lock, flags);
eaf2bcc9 1571 ictx->last_keycode = ictx->kc;
693508df 1572 spin_unlock_irqrestore(&ictx->kc_lock, flags);
eaf2bcc9
DH		 1573 }
1574 return;
1575 }
21677cfc 1576
eaf2bcc9 1577 /* Only panel type events left to process now */
693508df
JW		 1578 spin_lock_irqsave(&ictx->kc_lock, flags);
1579
eaf2bcc9
DH		 1580 /* KEY_MUTE repeats from knob need to be suppressed */
1581 if (ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) {
21677cfc
JW		 1582 do_gettimeofday(&t);
1583 msec = tv2int(&t, &prev_time);
1584 prev_time = t;
428cc763 1585 if (msec < ictx->idev->rep[REP_DELAY]) {
693508df 1586 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1587 return;
693508df 1588 }
21677cfc 1589 }
693508df 1590 kc = ictx->kc;
21677cfc 1591
693508df 1592 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1593
428cc763
JW		 1594 input_report_key(ictx->idev, kc, press_type);
1595 input_sync(ictx->idev);
21677cfc 1596
eaf2bcc9 1597 /* panel keys don't generate a release */
428cc763
JW		 1598 input_report_key(ictx->idev, kc, 0);
1599 input_sync(ictx->idev);
21677cfc 1600
693508df 1601 ictx->last_keycode = kc;
21677cfc
JW		 1602
1603 return;
1604
1605unknown_key:
693508df 1606 spin_unlock_irqrestore(&ictx->kc_lock, flags);
21677cfc 1607 dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__,
eaf2bcc9 1608 (long long)scancode);
21677cfc
JW		 1609 return;
1610
1611not_input_data:
1612 if (len != 8) {
1613 dev_warn(dev, "imon %s: invalid incoming packet "
1614 "size (len = %d, intf%d)\n", __func__, len, intf);
1615 return;
1616 }
1617
1618 /* iMON 2.4G associate frame */
1619 if (buf[0] == 0x00 &&
1620 buf[2] == 0xFF && /* REFID */
1621 buf[3] == 0xFF &&
1622 buf[4] == 0xFF &&
1623 buf[5] == 0xFF && /* iMON 2.4G */
1624 ((buf[6] == 0x4E && buf[7] == 0xDF) || /* LT */
1625 (buf[6] == 0x5E && buf[7] == 0xDF))) { /* DT */
1626 dev_warn(dev, "%s: remote associated refid=%02X\n",
1627 __func__, buf[1]);
f789bf40 1628 ictx->rf_isassociating = false;
21677cfc
JW		 1629 }
1630}
1631
1632/**
1633 * Callback function for USB core API: receive data
1634 */
1635static void usb_rx_callback_intf0(struct urb *urb)
1636{
1637 struct imon_context *ictx;
1638 int intfnum = 0;
1639
1640 if (!urb)
1641 return;
1642
1643 ictx = (struct imon_context *)urb->context;
1644 if (!ictx)
1645 return;
1646
1647 switch (urb->status) {
1648 case -ENOENT: /* usbcore unlink successful! */
1649 return;
1650
1651 case -ESHUTDOWN: /* transport endpoint was shut down */
1652 break;
1653
1654 case 0:
1655 imon_incoming_packet(ictx, urb, intfnum);
1656 break;
1657
1658 default:
1659 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1660 __func__, urb->status);
1661 break;
1662 }
1663
1664 usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
1665}
1666
1667static void usb_rx_callback_intf1(struct urb *urb)
1668{
1669 struct imon_context *ictx;
1670 int intfnum = 1;
1671
1672 if (!urb)
1673 return;
1674
1675 ictx = (struct imon_context *)urb->context;
1676 if (!ictx)
1677 return;
1678
1679 switch (urb->status) {
1680 case -ENOENT: /* usbcore unlink successful! */
1681 return;
1682
1683 case -ESHUTDOWN: /* transport endpoint was shut down */
1684 break;
1685
1686 case 0:
1687 imon_incoming_packet(ictx, urb, intfnum);
1688 break;
1689
1690 default:
1691 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1692 __func__, urb->status);
1693 break;
1694 }
1695
1696 usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
1697}
1698
04292fc0
JW		 1699/*
1700 * The 0x15c2:0xffdc device ID was used for umpteen different imon
1701 * devices, and all of them constantly spew interrupts, even when there
1702 * is no actual data to report. However, byte 6 of this buffer looks like
1703 * its unique across device variants, so we're trying to key off that to
1704 * figure out which display type (if any) and what IR protocol the device
1705 * actually supports. These devices have their IR protocol hard-coded into
1706 * their firmware, they can't be changed on the fly like the newer hardware.
1707 */
1708static void imon_get_ffdc_type(struct imon_context *ictx)
1709{
1710 u8 ffdc_cfg_byte = ictx->usb_rx_buf[6];
1711 u8 detected_display_type = IMON_DISPLAY_TYPE_NONE;
1712 u64 allowed_protos = IR_TYPE_OTHER;
1713
1714 switch (ffdc_cfg_byte) {
1715 /* iMON Knob, no display, iMON IR + vol knob */
1716 case 0x21:
1717 dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR");
1718 ictx->display_supported = false;
1719 break;
1720 /* iMON 2.4G LT (usb stick), no display, iMON RF */
1721 case 0x4e:
1722 dev_info(ictx->dev, "0xffdc iMON 2.4G LT, iMON RF");
1723 ictx->display_supported = false;
1724 ictx->rf_device = true;
1725 break;
1726 /* iMON VFD, no IR (does have vol knob tho) */
1727 case 0x35:
1728 dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR");
1729 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1730 break;
1731 /* iMON VFD, iMON IR */
1732 case 0x24:
1733 case 0x85:
1734 dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR");
1735 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1736 break;
1737 /* iMON VFD, MCE IR */
1738 case 0x9e:
1739 dev_info(ictx->dev, "0xffdc iMON VFD, MCE IR");
1740 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1741 allowed_protos = IR_TYPE_RC6;
1742 break;
1743 /* iMON LCD, MCE IR */
1744 case 0x9f:
1745 dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR");
1746 detected_display_type = IMON_DISPLAY_TYPE_LCD;
1747 allowed_protos = IR_TYPE_RC6;
1748 break;
1749 default:
1750 dev_info(ictx->dev, "Unknown 0xffdc device, "
1751 "defaulting to VFD and iMON IR");
1752 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1753 break;
1754 }
1755
1756 printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte);
1757
1758 ictx->display_type = detected_display_type;
d8b4b582 1759 ictx->rdev->allowed_protos = allowed_protos;
04292fc0
JW		 1760 ictx->ir_type = allowed_protos;
1761}
1762
1763static void imon_set_display_type(struct imon_context *ictx)
1764{
1765 u8 configured_display_type = IMON_DISPLAY_TYPE_VFD;
1766
1767 /*
1768 * Try to auto-detect the type of display if the user hasn't set
1769 * it by hand via the display_type modparam. Default is VFD.
1770 */
1771
1772 if (display_type == IMON_DISPLAY_TYPE_AUTO) {
1773 switch (ictx->product) {
1774 case 0xffdc:
1775 /* set in imon_get_ffdc_type() */
1776 configured_display_type = ictx->display_type;
1777 break;
1778 case 0x0034:
1779 case 0x0035:
1780 configured_display_type = IMON_DISPLAY_TYPE_VGA;
1781 break;
1782 case 0x0038:
1783 case 0x0039:
1784 case 0x0045:
1785 configured_display_type = IMON_DISPLAY_TYPE_LCD;
1786 break;
1787 case 0x003c:
1788 case 0x0041:
1789 case 0x0042:
1790 case 0x0043:
1791 configured_display_type = IMON_DISPLAY_TYPE_NONE;
1792 ictx->display_supported = false;
1793 break;
1794 case 0x0036:
1795 case 0x0044:
1796 default:
1797 configured_display_type = IMON_DISPLAY_TYPE_VFD;
1798 break;
1799 }
1800 } else {
1801 configured_display_type = display_type;
1802 if (display_type == IMON_DISPLAY_TYPE_NONE)
1803 ictx->display_supported = false;
1804 else
1805 ictx->display_supported = true;
1806 dev_info(ictx->dev, "%s: overriding display type to %d via "
1807 "modparam\n", __func__, display_type);
1808 }
1809
1810 ictx->display_type = configured_display_type;
1811}
1812
d8b4b582 1813static struct rc_dev *imon_init_rdev(struct imon_context *ictx)
eaf2bcc9 1814{
d8b4b582 1815 struct rc_dev *rdev;
eaf2bcc9 1816 int ret;
04292fc0
JW		 1817 const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
1818 0x00, 0x00, 0x00, 0x88 };
eaf2bcc9 1819
d8b4b582
DH		 1820 rdev = rc_allocate_device();
1821 if (!rdev) {
eaf2bcc9
DH		 1822 dev_err(ictx->dev, "remote control dev allocation failed\n");
1823 goto out;
1824 }
1825
1826 snprintf(ictx->name_rdev, sizeof(ictx->name_rdev),
1827 "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product);
1828 usb_make_path(ictx->usbdev_intf0, ictx->phys_rdev,
1829 sizeof(ictx->phys_rdev));
1830 strlcat(ictx->phys_rdev, "/input0", sizeof(ictx->phys_rdev));
1831
d8b4b582
DH		 1832 rdev->input_name = ictx->name_rdev;
1833 rdev->input_phys = ictx->phys_rdev;
1834 usb_to_input_id(ictx->usbdev_intf0, &rdev->input_id);
eaf2bcc9 1835 rdev->dev.parent = ictx->dev;
eaf2bcc9 1836
d8b4b582
DH		 1837 rdev->priv = ictx;
1838 rdev->driver_type = RC_DRIVER_SCANCODE;
1839 rdev->allowed_protos = IR_TYPE_OTHER | IR_TYPE_RC6; /* iMON PAD or MCE */
1840 rdev->change_protocol = imon_ir_change_protocol;
1841 rdev->driver_name = MOD_NAME;
1842 if (ictx->ir_type == IR_TYPE_RC6)
1843 rdev->map_name = RC_MAP_IMON_MCE;
1844 else
1845 rdev->map_name = RC_MAP_IMON_PAD;
eaf2bcc9 1846
04292fc0
JW		 1847 /* Enable front-panel buttons and/or knobs */
1848 memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet));
1849 ret = send_packet(ictx);
1850 /* Not fatal, but warn about it */
1851 if (ret)
1852 dev_info(ictx->dev, "panel buttons/knobs setup failed\n");
1853
1854 if (ictx->product == 0xffdc)
1855 imon_get_ffdc_type(ictx);
1856
1857 imon_set_display_type(ictx);
1858
d8b4b582 1859 ret = rc_register_device(rdev);
eaf2bcc9
DH		 1860 if (ret < 0) {
1861 dev_err(ictx->dev, "remote input dev register failed\n");
1862 goto out;
1863 }
1864
1865 return rdev;
1866
1867out:
d8b4b582 1868 rc_free_device(rdev);
eaf2bcc9
DH		 1869 return NULL;
1870}
1871
21677cfc
JW		 1872static struct input_dev *imon_init_idev(struct imon_context *ictx)
1873{
1874 struct input_dev *idev;
21677cfc 1875 int ret, i;
21677cfc
JW		 1876
1877 idev = input_allocate_device();
1878 if (!idev) {
eaf2bcc9
DH		 1879 dev_err(ictx->dev, "input dev allocation failed\n");
1880 goto out;
21677cfc
JW		 1881 }
1882
21677cfc 1883 snprintf(ictx->name_idev, sizeof(ictx->name_idev),
eaf2bcc9
DH		 1884 "iMON Panel, Knob and Mouse(%04x:%04x)",
1885 ictx->vendor, ictx->product);
21677cfc
JW		 1886 idev->name = ictx->name_idev;
1887
1888 usb_make_path(ictx->usbdev_intf0, ictx->phys_idev,
1889 sizeof(ictx->phys_idev));
eaf2bcc9 1890 strlcat(ictx->phys_idev, "/input1", sizeof(ictx->phys_idev));
21677cfc
JW		 1891 idev->phys = ictx->phys_idev;
1892
db190fc1 1893 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
21677cfc
JW		 1894
1895 idev->keybit[BIT_WORD(BTN_MOUSE)] =
1896 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1897 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
1898 BIT_MASK(REL_WHEEL);
1899
1900 /* panel and/or knob code support */
1901 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
1902 u32 kc = imon_panel_key_table[i].keycode;
1903 __set_bit(kc, idev->keybit);
1904 }
1905
21677cfc
JW		 1906 usb_to_input_id(ictx->usbdev_intf0, &idev->id);
1907 idev->dev.parent = ictx->dev;
eaf2bcc9 1908 input_set_drvdata(idev, ictx);
21677cfc 1909
eaf2bcc9 1910 ret = input_register_device(idev);
21677cfc 1911 if (ret < 0) {
eaf2bcc9
DH		 1912 dev_err(ictx->dev, "input dev register failed\n");
1913 goto out;
21677cfc
JW		 1914 }
1915
1916 return idev;
1917
eaf2bcc9 1918out:
21677cfc 1919 input_free_device(idev);
21677cfc
JW		 1920 return NULL;
1921}
1922
1923static struct input_dev *imon_init_touch(struct imon_context *ictx)
1924{
1925 struct input_dev *touch;
1926 int ret;
1927
1928 touch = input_allocate_device();
1929 if (!touch) {
1930 dev_err(ictx->dev, "touchscreen input dev allocation failed\n");
1931 goto touch_alloc_failed;
1932 }
1933
1934 snprintf(ictx->name_touch, sizeof(ictx->name_touch),
1935 "iMON USB Touchscreen (%04x:%04x)",
1936 ictx->vendor, ictx->product);
1937 touch->name = ictx->name_touch;
1938
1939 usb_make_path(ictx->usbdev_intf1, ictx->phys_touch,
1940 sizeof(ictx->phys_touch));
eaf2bcc9 1941 strlcat(ictx->phys_touch, "/input2", sizeof(ictx->phys_touch));
21677cfc
JW		 1942 touch->phys = ictx->phys_touch;
1943
1944 touch->evbit[0] =
1945 BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1946 touch->keybit[BIT_WORD(BTN_TOUCH)] =
1947 BIT_MASK(BTN_TOUCH);
1948 input_set_abs_params(touch, ABS_X,
1949 0x00, 0xfff, 0, 0);
1950 input_set_abs_params(touch, ABS_Y,
1951 0x00, 0xfff, 0, 0);
1952
1953 input_set_drvdata(touch, ictx);
1954
1955 usb_to_input_id(ictx->usbdev_intf1, &touch->id);
1956 touch->dev.parent = ictx->dev;
1957 ret = input_register_device(touch);
1958 if (ret < 0) {
1959 dev_info(ictx->dev, "touchscreen input dev register failed\n");
1960 goto touch_register_failed;
1961 }
1962
1963 return touch;
1964
1965touch_register_failed:
1966 input_free_device(ictx->touch);
21677cfc
JW		 1967
1968touch_alloc_failed:
1969 return NULL;
1970}
1971
1972static bool imon_find_endpoints(struct imon_context *ictx,
1973 struct usb_host_interface *iface_desc)
1974{
1975 struct usb_endpoint_descriptor *ep;
1976 struct usb_endpoint_descriptor *rx_endpoint = NULL;
1977 struct usb_endpoint_descriptor *tx_endpoint = NULL;
1978 int ifnum = iface_desc->desc.bInterfaceNumber;
1979 int num_endpts = iface_desc->desc.bNumEndpoints;
1980 int i, ep_dir, ep_type;
f789bf40
JW		 1981 bool ir_ep_found = false;
1982 bool display_ep_found = false;
1983 bool tx_control = false;
21677cfc
JW		 1984
1985 /*
1986 * Scan the endpoint list and set:
1987 * first input endpoint = IR endpoint
1988 * first output endpoint = display endpoint
1989 */
1990 for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) {
1991 ep = &iface_desc->endpoint[i].desc;
1992 ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
1993 ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
1994
1995 if (!ir_ep_found && ep_dir == USB_DIR_IN &&
1996 ep_type == USB_ENDPOINT_XFER_INT) {
1997
1998 rx_endpoint = ep;
f789bf40 1999 ir_ep_found = true;
21677cfc
JW		 2000 dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__);
2001
2002 } else if (!display_ep_found && ep_dir == USB_DIR_OUT &&
2003 ep_type == USB_ENDPOINT_XFER_INT) {
2004 tx_endpoint = ep;
f789bf40 2005 display_ep_found = true;
21677cfc
JW		 2006 dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__);
2007 }
2008 }
2009
2010 if (ifnum == 0) {
2011 ictx->rx_endpoint_intf0 = rx_endpoint;
2012 /*
2013 * tx is used to send characters to lcd/vfd, associate RF
2014 * remotes, set IR protocol, and maybe more...
2015 */
2016 ictx->tx_endpoint = tx_endpoint;
2017 } else {
2018 ictx->rx_endpoint_intf1 = rx_endpoint;
2019 }
2020
2021 /*
2022 * If we didn't find a display endpoint, this is probably one of the
2023 * newer iMON devices that use control urb instead of interrupt
2024 */
2025 if (!display_ep_found) {
f789bf40
JW		 2026 tx_control = true;
2027 display_ep_found = true;
21677cfc
JW		 2028 dev_dbg(ictx->dev, "%s: device uses control endpoint, not "
2029 "interface OUT endpoint\n", __func__);
2030 }
2031
2032 /*
2033 * Some iMON receivers have no display. Unfortunately, it seems
2034 * that SoundGraph recycles device IDs between devices both with
2035 * and without... :\
2036 */
2037 if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) {
f789bf40 2038 display_ep_found = false;
21677cfc
JW		 2039 dev_dbg(ictx->dev, "%s: device has no display\n", __func__);
2040 }
2041
2042 /*
2043 * iMON Touch devices have a VGA touchscreen, but no "display", as
2044 * that refers to e.g. /dev/lcd0 (a character device LCD or VFD).
2045 */
2046 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
f789bf40 2047 display_ep_found = false;
21677cfc
JW		 2048 dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__);
2049 }
2050
2051 /* Input endpoint is mandatory */
2052 if (!ir_ep_found)
e2302501 2053 pr_err("no valid input (IR) endpoint found\n");
21677cfc
JW		 2054
2055 ictx->tx_control = tx_control;
2056
2057 if (display_ep_found)
2058 ictx->display_supported = true;
2059
2060 return ir_ep_found;
2061
2062}
2063
2064static struct imon_context *imon_init_intf0(struct usb_interface *intf)
2065{
2066 struct imon_context *ictx;
2067 struct urb *rx_urb;
2068 struct urb *tx_urb;
2069 struct device *dev = &intf->dev;
2070 struct usb_host_interface *iface_desc;
1f71baef 2071 int ret = -ENOMEM;
21677cfc
JW		 2072
2073 ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL);
2074 if (!ictx) {
2075 dev_err(dev, "%s: kzalloc failed for context", __func__);
2076 goto exit;
2077 }
2078 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2079 if (!rx_urb) {
2080 dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__);
2081 goto rx_urb_alloc_failed;
2082 }
2083 tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2084 if (!tx_urb) {
2085 dev_err(dev, "%s: usb_alloc_urb failed for display urb",
2086 __func__);
2087 goto tx_urb_alloc_failed;
2088 }
2089
2090 mutex_init(&ictx->lock);
693508df 2091 spin_lock_init(&ictx->kc_lock);
21677cfc
JW		 2092
2093 mutex_lock(&ictx->lock);
2094
2095 ictx->dev = dev;
2096 ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf));
f789bf40 2097 ictx->dev_present_intf0 = true;
21677cfc
JW		 2098 ictx->rx_urb_intf0 = rx_urb;
2099 ictx->tx_urb = tx_urb;
bbe4690f 2100 ictx->rf_device = false;
21677cfc
JW		 2101
2102 ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor);
2103 ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct);
2104
1f71baef 2105 ret = -ENODEV;
21677cfc 2106 iface_desc = intf->cur_altsetting;
1f71baef 2107 if (!imon_find_endpoints(ictx, iface_desc)) {
21677cfc 2108 goto find_endpoint_failed;
1f71baef 2109 }
21677cfc
JW		 2110
2111 ictx->idev = imon_init_idev(ictx);
2112 if (!ictx->idev) {
2113 dev_err(dev, "%s: input device setup failed\n", __func__);
2114 goto idev_setup_failed;
2115 }
2116
eaf2bcc9
DH		 2117 ictx->rdev = imon_init_rdev(ictx);
2118 if (!ictx->rdev) {
2119 dev_err(dev, "%s: rc device setup failed\n", __func__);
2120 goto rdev_setup_failed;
2121 }
2122
21677cfc
JW		 2123 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2124 usb_rcvintpipe(ictx->usbdev_intf0,
2125 ictx->rx_endpoint_intf0->bEndpointAddress),
2126 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2127 usb_rx_callback_intf0, ictx,
2128 ictx->rx_endpoint_intf0->bInterval);
2129
2130 ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL);
2131 if (ret) {
e2302501 2132 pr_err("usb_submit_urb failed for intf0 (%d)\n", ret);
21677cfc
JW		 2133 goto urb_submit_failed;
2134 }
2135
2136 return ictx;
2137
2138urb_submit_failed:
d8b4b582 2139 rc_unregister_device(ictx->rdev);
eaf2bcc9
DH		 2140rdev_setup_failed:
2141 input_unregister_device(ictx->idev);
21677cfc
JW		 2142idev_setup_failed:
2143find_endpoint_failed:
2144 mutex_unlock(&ictx->lock);
2145 usb_free_urb(tx_urb);
2146tx_urb_alloc_failed:
2147 usb_free_urb(rx_urb);
2148rx_urb_alloc_failed:
2149 kfree(ictx);
2150exit:
2151 dev_err(dev, "unable to initialize intf0, err %d\n", ret);
2152
2153 return NULL;
2154}
2155
2156static struct imon_context *imon_init_intf1(struct usb_interface *intf,
2157 struct imon_context *ictx)
2158{
2159 struct urb *rx_urb;
2160 struct usb_host_interface *iface_desc;
1f71baef 2161 int ret = -ENOMEM;
21677cfc
JW		 2162
2163 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2164 if (!rx_urb) {
e2302501 2165 pr_err("usb_alloc_urb failed for IR urb\n");
21677cfc
JW		 2166 goto rx_urb_alloc_failed;
2167 }
2168
2169 mutex_lock(&ictx->lock);
2170
2171 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2172 init_timer(&ictx->ttimer);
2173 ictx->ttimer.data = (unsigned long)ictx;
2174 ictx->ttimer.function = imon_touch_display_timeout;
2175 }
2176
2177 ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf));
f789bf40 2178 ictx->dev_present_intf1 = true;
21677cfc
JW		 2179 ictx->rx_urb_intf1 = rx_urb;
2180
1f71baef 2181 ret = -ENODEV;
21677cfc
JW		 2182 iface_desc = intf->cur_altsetting;
2183 if (!imon_find_endpoints(ictx, iface_desc))
2184 goto find_endpoint_failed;
2185
2186 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2187 ictx->touch = imon_init_touch(ictx);
2188 if (!ictx->touch)
2189 goto touch_setup_failed;
2190 } else
2191 ictx->touch = NULL;
2192
2193 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2194 usb_rcvintpipe(ictx->usbdev_intf1,
2195 ictx->rx_endpoint_intf1->bEndpointAddress),
2196 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2197 usb_rx_callback_intf1, ictx,
2198 ictx->rx_endpoint_intf1->bInterval);
2199
2200 ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL);
2201
2202 if (ret) {
e2302501 2203 pr_err("usb_submit_urb failed for intf1 (%d)\n", ret);
21677cfc
JW		 2204 goto urb_submit_failed;
2205 }
2206
2207 return ictx;
2208
2209urb_submit_failed:
20cd1959 2210 if (ictx->touch)
21677cfc 2211 input_unregister_device(ictx->touch);
21677cfc
JW		 2212touch_setup_failed:
2213find_endpoint_failed:
2214 mutex_unlock(&ictx->lock);
2215 usb_free_urb(rx_urb);
2216rx_urb_alloc_failed:
2217 dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret);
2218
2219 return NULL;
2220}
2221
21677cfc
JW		 2222static void imon_init_display(struct imon_context *ictx,
2223 struct usb_interface *intf)
2224{
2225 int ret;
2226
2227 dev_dbg(ictx->dev, "Registering iMON display with sysfs\n");
2228
2229 /* set up sysfs entry for built-in clock */
6aa209e4 2230 ret = sysfs_create_group(&intf->dev.kobj, &imon_display_attr_group);
21677cfc
JW		 2231 if (ret)
2232 dev_err(ictx->dev, "Could not create display sysfs "
2233 "entries(%d)", ret);
2234
2235 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2236 ret = usb_register_dev(intf, &imon_lcd_class);
2237 else
2238 ret = usb_register_dev(intf, &imon_vfd_class);
2239 if (ret)
2240 /* Not a fatal error, so ignore */
2241 dev_info(ictx->dev, "could not get a minor number for "
2242 "display\n");
2243
2244}
2245
2246/**
2247 * Callback function for USB core API: Probe
2248 */
2249static int __devinit imon_probe(struct usb_interface *interface,
2250 const struct usb_device_id *id)
2251{
2252 struct usb_device *usbdev = NULL;
2253 struct usb_host_interface *iface_desc = NULL;
2254 struct usb_interface *first_if;
2255 struct device *dev = &interface->dev;
2256 int ifnum, code_length, sysfs_err;
2257 int ret = 0;
2258 struct imon_context *ictx = NULL;
2259 struct imon_context *first_if_ctx = NULL;
2260 u16 vendor, product;
21677cfc
JW		 2261
2262 code_length = BUF_CHUNK_SIZE * 8;
2263
2264 usbdev = usb_get_dev(interface_to_usbdev(interface));
2265 iface_desc = interface->cur_altsetting;
2266 ifnum = iface_desc->desc.bInterfaceNumber;
2267 vendor = le16_to_cpu(usbdev->descriptor.idVendor);
2268 product = le16_to_cpu(usbdev->descriptor.idProduct);
2269
2270 dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n",
2271 __func__, vendor, product, ifnum);
2272
2273 /* prevent races probing devices w/multiple interfaces */
2274 mutex_lock(&driver_lock);
2275
2276 first_if = usb_ifnum_to_if(usbdev, 0);
2277 first_if_ctx = (struct imon_context *)usb_get_intfdata(first_if);
2278
2279 if (ifnum == 0) {
2280 ictx = imon_init_intf0(interface);
2281 if (!ictx) {
e2302501 2282 pr_err("failed to initialize context!\n");
21677cfc
JW		 2283 ret = -ENODEV;
2284 goto fail;
2285 }
2286
21677cfc
JW		 2287 } else {
2288 /* this is the secondary interface on the device */
2289 ictx = imon_init_intf1(interface, first_if_ctx);
2290 if (!ictx) {
e2302501 2291 pr_err("failed to attach to context!\n");
21677cfc
JW		 2292 ret = -ENODEV;
2293 goto fail;
2294 }
2295
2296 }
2297
2298 usb_set_intfdata(interface, ictx);
2299
2300 if (ifnum == 0) {
bbe4690f
JW		 2301 if (product == 0xffdc && ictx->rf_device) {
2302 sysfs_err = sysfs_create_group(&interface->dev.kobj,
6aa209e4 2303 &imon_rf_attr_group);
bbe4690f 2304 if (sysfs_err)
e2302501
JP		 2305 pr_err("Could not create RF sysfs entries(%d)\n",
2306 sysfs_err);
bbe4690f
JW		 2307 }
2308
21677cfc
JW		 2309 if (ictx->display_supported)
2310 imon_init_display(ictx, interface);
2311 }
2312
21677cfc
JW		 2313 dev_info(dev, "iMON device (%04x:%04x, intf%d) on "
2314 "usb<%d:%d> initialized\n", vendor, product, ifnum,
2315 usbdev->bus->busnum, usbdev->devnum);
2316
2317 mutex_unlock(&ictx->lock);
2318 mutex_unlock(&driver_lock);
2319
2320 return 0;
2321
2322fail:
2323 mutex_unlock(&driver_lock);
2324 dev_err(dev, "unable to register, err %d\n", ret);
2325
2326 return ret;
2327}
2328
2329/**
2330 * Callback function for USB core API: disconnect
2331 */
2332static void __devexit imon_disconnect(struct usb_interface *interface)
2333{
2334 struct imon_context *ictx;
2335 struct device *dev;
2336 int ifnum;
2337
2338 /* prevent races with multi-interface device probing and display_open */
2339 mutex_lock(&driver_lock);
2340
2341 ictx = usb_get_intfdata(interface);
2342 dev = ictx->dev;
2343 ifnum = interface->cur_altsetting->desc.bInterfaceNumber;
2344
2345 mutex_lock(&ictx->lock);
2346
2347 /*
2348 * sysfs_remove_group is safe to call even if sysfs_create_group
2349 * hasn't been called
2350 */
6aa209e4
JW		 2351 sysfs_remove_group(&interface->dev.kobj, &imon_display_attr_group);
2352 sysfs_remove_group(&interface->dev.kobj, &imon_rf_attr_group);
21677cfc
JW		 2353
2354 usb_set_intfdata(interface, NULL);
2355
2356 /* Abort ongoing write */
2357 if (ictx->tx.busy) {
2358 usb_kill_urb(ictx->tx_urb);
2359 complete_all(&ictx->tx.finished);
2360 }
2361
2362 if (ifnum == 0) {
f789bf40 2363 ictx->dev_present_intf0 = false;
21677cfc 2364 usb_kill_urb(ictx->rx_urb_intf0);
eaf2bcc9 2365 input_unregister_device(ictx->idev);
d8b4b582 2366 rc_unregister_device(ictx->rdev);
21677cfc
JW		 2367 if (ictx->display_supported) {
2368 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2369 usb_deregister_dev(interface, &imon_lcd_class);
2370 else
2371 usb_deregister_dev(interface, &imon_vfd_class);
2372 }
2373 } else {
f789bf40 2374 ictx->dev_present_intf1 = false;
21677cfc
JW		 2375 usb_kill_urb(ictx->rx_urb_intf1);
2376 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2377 input_unregister_device(ictx->touch);
2378 }
2379
2380 if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) {
2381 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2382 del_timer_sync(&ictx->ttimer);
2383 mutex_unlock(&ictx->lock);
2384 if (!ictx->display_isopen)
2385 free_imon_context(ictx);
eaf2bcc9 2386 } else
21677cfc 2387 mutex_unlock(&ictx->lock);
21677cfc
JW		 2388
2389 mutex_unlock(&driver_lock);
2390
2391 dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n",
2392 __func__, ifnum);
2393}
2394
2395static int imon_suspend(struct usb_interface *intf, pm_message_t message)
2396{
2397 struct imon_context *ictx = usb_get_intfdata(intf);
2398 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2399
2400 if (ifnum == 0)
2401 usb_kill_urb(ictx->rx_urb_intf0);
2402 else
2403 usb_kill_urb(ictx->rx_urb_intf1);
2404
2405 return 0;
2406}
2407
2408static int imon_resume(struct usb_interface *intf)
2409{
2410 int rc = 0;
2411 struct imon_context *ictx = usb_get_intfdata(intf);
2412 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2413
2414 if (ifnum == 0) {
2415 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2416 usb_rcvintpipe(ictx->usbdev_intf0,
2417 ictx->rx_endpoint_intf0->bEndpointAddress),
2418 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2419 usb_rx_callback_intf0, ictx,
2420 ictx->rx_endpoint_intf0->bInterval);
2421
2422 rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
2423
2424 } else {
2425 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2426 usb_rcvintpipe(ictx->usbdev_intf1,
2427 ictx->rx_endpoint_intf1->bEndpointAddress),
2428 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2429 usb_rx_callback_intf1, ictx,
2430 ictx->rx_endpoint_intf1->bInterval);
2431
2432 rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
2433 }
2434
2435 return rc;
2436}
2437
2438static int __init imon_init(void)
2439{
2440 int rc;
2441
2442 rc = usb_register(&imon_driver);
2443 if (rc) {
e2302501 2444 pr_err("usb register failed(%d)\n", rc);
21677cfc
JW		 2445 rc = -ENODEV;
2446 }
2447
2448 return rc;
2449}
2450
2451static void __exit imon_exit(void)
2452{
2453 usb_deregister(&imon_driver);
2454}
2455
2456module_init(imon_init);
2457module_exit(imon_exit);
kernel source for telekom puls (alcatel/mediatek)