2 * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD
4 * Copyright(C) 2010 Jarod Wilson <jarod@wilsonet.com>
5 * Portions based on the original lirc_imon driver,
6 * Copyright(C) 2004 Venky Raju(dev@venky.ws)
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.
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.
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.
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.
29 #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
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>
38 #include <linux/input.h>
39 #include <linux/usb.h>
40 #include <linux/usb/input.h>
41 #include <media/rc-core.h>
43 #include <linux/time.h>
44 #include <linux/timer.h>
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"
49 #define MOD_VERSION "0.9.2"
51 #define DISPLAY_MINOR_BASE 144
52 #define DEVICE_NAME "lcd%d"
54 #define BUF_CHUNK_SIZE 8
57 #define BIT_DURATION 250 /* each bit received is 250us */
59 #define IMON_CLOCK_ENABLE_PACKETS 2
61 /*** P R O T O T Y P E S ***/
63 /* USB Callback prototypes */
64 static int imon_probe(struct usb_interface *interface,
65 const struct usb_device_id *id);
66 static void imon_disconnect(struct usb_interface *interface);
67 static void usb_rx_callback_intf0(struct urb *urb);
68 static void usb_rx_callback_intf1(struct urb *urb);
69 static void usb_tx_callback(struct urb *urb);
71 /* suspend/resume support */
72 static int imon_resume(struct usb_interface *intf);
73 static int imon_suspend(struct usb_interface *intf, pm_message_t message);
75 /* Display file_operations function prototypes */
76 static int display_open(struct inode *inode, struct file *file);
77 static int display_close(struct inode *inode, struct file *file);
79 /* VFD write operation */
80 static ssize_t vfd_write(struct file *file, const char *buf,
81 size_t n_bytes, loff_t *pos);
83 /* LCD file_operations override function prototypes */
84 static ssize_t lcd_write(struct file *file, const char *buf,
85 size_t n_bytes, loff_t *pos);
87 /*** G L O B A L S ***/
91 /* Newer devices have two interfaces */
92 struct usb_device *usbdev_intf0;
93 struct usb_device *usbdev_intf1;
95 bool display_supported; /* not all controllers do */
96 bool display_isopen; /* display port has been opened */
97 bool rf_device; /* true if iMON 2.4G LT/DT RF device */
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 */
102 struct mutex lock; /* to lock this object */
103 wait_queue_head_t remove_ok; /* For unexpected USB disconnects */
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;
112 unsigned char usb_rx_buf[8];
113 unsigned char usb_tx_buf[8];
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 */
122 u16 vendor; /* usb vendor ID */
123 u16 product; /* usb product ID */
125 struct rc_dev *rdev; /* rc-core device for remote */
126 struct input_dev *idev; /* input device for panel & IR mouse */
127 struct input_dev *touch; /* input device for touchscreen */
129 spinlock_t kc_lock; /* make sure we get keycodes right */
130 u32 kc; /* current input keycode */
131 u32 last_keycode; /* last reported input keycode */
132 u32 rc_scancode; /* the computed remote scancode */
133 u8 rc_toggle; /* the computed remote toggle bit */
134 u64 rc_type; /* iMON or MCE (RC6) IR protocol? */
135 bool release_code; /* some keys send a release code */
137 u8 display_type; /* store the display type */
138 bool pad_mouse; /* toggle kbd(0)/mouse(1) mode */
140 char name_rdev[128]; /* rc input device name */
141 char phys_rdev[64]; /* rc input device phys path */
143 char name_idev[128]; /* input device name */
144 char phys_idev[64]; /* input device phys path */
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 */
153 #define TOUCH_TIMEOUT (HZ/30)
155 /* vfd character device file operations */
156 static const struct file_operations vfd_fops = {
157 .owner = THIS_MODULE,
158 .open = &display_open,
160 .release = &display_close,
161 .llseek = noop_llseek,
164 /* lcd character device file operations */
165 static const struct file_operations lcd_fops = {
166 .owner = THIS_MODULE,
167 .open = &display_open,
169 .release = &display_close,
170 .llseek = noop_llseek,
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,
188 * USB Device ID for iMON USB Control Boards
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.
198 static struct usb_device_id imon_usb_id_table[] = {
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)
205 { USB_DEVICE(0x15c2, 0xffdc) },
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.
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) },
253 /* USB Device data */
254 static struct usb_driver imon_driver = {
257 .disconnect = imon_disconnect,
258 .suspend = imon_suspend,
259 .resume = imon_resume,
260 .id_table = imon_usb_id_table,
263 static struct usb_class_driver imon_vfd_class = {
266 .minor_base = DISPLAY_MINOR_BASE,
269 static struct usb_class_driver imon_lcd_class = {
272 .minor_base = DISPLAY_MINOR_BASE,
275 /* imon receiver front panel/knob key table */
276 static const struct {
279 } imon_panel_key_table[] = {
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 },
298 /* 0xffdc iMON MCE VFD */
299 { 0x00010000ffffffeell, KEY_VOLUMEUP },
300 { 0x01000000ffffffeell, KEY_VOLUMEDOWN },
301 /* iMON Knob values */
302 { 0x000100ffffffffeell, KEY_VOLUMEUP },
303 { 0x010000ffffffffeell, KEY_VOLUMEDOWN },
304 { 0x000008ffffffffeell, KEY_MUTE },
307 /* to prevent races between open() and disconnect(), probing, etc */
308 static DEFINE_MUTEX(driver_lock);
310 /* Module bookkeeping bits */
311 MODULE_AUTHOR(MOD_AUTHOR);
312 MODULE_DESCRIPTION(MOD_DESC);
313 MODULE_VERSION(MOD_VERSION);
314 MODULE_LICENSE("GPL");
315 MODULE_DEVICE_TABLE(usb, imon_usb_id_table);
318 module_param(debug, bool, S_IRUGO | S_IWUSR);
319 MODULE_PARM_DESC(debug, "Debug messages: 0=no, 1=yes (default: no)");
321 /* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */
322 static int display_type;
323 module_param(display_type, int, S_IRUGO);
324 MODULE_PARM_DESC(display_type, "Type of attached display. 0=autodetect, "
325 "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)");
327 static int pad_stabilize = 1;
328 module_param(pad_stabilize, int, S_IRUGO | S_IWUSR);
329 MODULE_PARM_DESC(pad_stabilize, "Apply stabilization algorithm to iMON PAD "
330 "presses in arrow key mode. 0=disable, 1=enable (default).");
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.
337 module_param(nomouse, bool, S_IRUGO | S_IWUSR);
338 MODULE_PARM_DESC(nomouse, "Disable mouse input device mode when IR device is "
339 "open. 0=don't disable, 1=disable. (default: don't disable)");
341 /* threshold at which a pad push registers as an arrow key in kbd mode */
342 static int pad_thresh;
343 module_param(pad_thresh, int, S_IRUGO | S_IWUSR);
344 MODULE_PARM_DESC(pad_thresh, "Threshold at which a pad push registers as an "
345 "arrow key in kbd mode (default: 28)");
348 static void free_imon_context(struct imon_context *ictx)
350 struct device *dev = ictx->dev;
352 usb_free_urb(ictx->tx_urb);
353 usb_free_urb(ictx->rx_urb_intf0);
354 usb_free_urb(ictx->rx_urb_intf1);
357 dev_dbg(dev, "%s: iMON context freed\n", __func__);
361 * Called when the Display device (e.g. /dev/lcd0)
362 * is opened by the application.
364 static int display_open(struct inode *inode, struct file *file)
366 struct usb_interface *interface;
367 struct imon_context *ictx = NULL;
371 /* prevent races with disconnect */
372 mutex_lock(&driver_lock);
374 subminor = iminor(inode);
375 interface = usb_find_interface(&imon_driver, subminor);
377 pr_err("could not find interface for minor %d\n", subminor);
381 ictx = usb_get_intfdata(interface);
384 pr_err("no context found for minor %d\n", subminor);
389 mutex_lock(&ictx->lock);
391 if (!ictx->display_supported) {
392 pr_err("display not supported by device\n");
394 } else if (ictx->display_isopen) {
395 pr_err("display port is already open\n");
398 ictx->display_isopen = true;
399 file->private_data = ictx;
400 dev_dbg(ictx->dev, "display port opened\n");
403 mutex_unlock(&ictx->lock);
406 mutex_unlock(&driver_lock);
411 * Called when the display device (e.g. /dev/lcd0)
412 * is closed by the application.
414 static int display_close(struct inode *inode, struct file *file)
416 struct imon_context *ictx = NULL;
419 ictx = file->private_data;
422 pr_err("no context for device\n");
426 mutex_lock(&ictx->lock);
428 if (!ictx->display_supported) {
429 pr_err("display not supported by device\n");
431 } else if (!ictx->display_isopen) {
432 pr_err("display is not open\n");
435 ictx->display_isopen = false;
436 dev_dbg(ictx->dev, "display port closed\n");
437 if (!ictx->dev_present_intf0) {
439 * Device disconnected before close and IR port is not
440 * open. If IR port is open, context will be deleted by
443 mutex_unlock(&ictx->lock);
444 free_imon_context(ictx);
449 mutex_unlock(&ictx->lock);
454 * Sends a packet to the device -- this function must be called
455 * with ictx->lock held.
457 static int send_packet(struct imon_context *ictx)
460 unsigned long timeout;
463 struct usb_ctrlrequest *control_req = NULL;
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;
471 usb_fill_int_urb(ictx->tx_urb, ictx->usbdev_intf0, pipe,
473 sizeof(ictx->usb_tx_buf),
474 usb_tx_callback, ictx, interval);
476 ictx->tx_urb->actual_length = 0;
478 /* fill request into kmalloc'ed space: */
479 control_req = kmalloc(sizeof(struct usb_ctrlrequest),
481 if (control_req == NULL)
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);
491 /* control pipe is endpoint 0x00 */
492 pipe = usb_sndctrlpipe(ictx->usbdev_intf0, 0);
494 /* build the control urb */
495 usb_fill_control_urb(ictx->tx_urb, ictx->usbdev_intf0,
496 pipe, (unsigned char *)control_req,
498 sizeof(ictx->usb_tx_buf),
499 usb_tx_callback, ictx);
500 ictx->tx_urb->actual_length = 0;
503 init_completion(&ictx->tx.finished);
504 ictx->tx.busy = true;
505 smp_rmb(); /* ensure later readers know we're busy */
507 retval = usb_submit_urb(ictx->tx_urb, GFP_KERNEL);
509 ictx->tx.busy = false;
510 smp_rmb(); /* ensure later readers know we're not busy */
511 pr_err("error submitting urb(%d)\n", retval);
513 /* Wait for transmission to complete (or abort) */
514 mutex_unlock(&ictx->lock);
515 retval = wait_for_completion_interruptible(
518 pr_err("task interrupted\n");
519 mutex_lock(&ictx->lock);
521 retval = ictx->tx.status;
523 pr_err("packet tx failed (%d)\n", retval);
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.
533 timeout = msecs_to_jiffies(5);
534 set_current_state(TASK_UNINTERRUPTIBLE);
535 schedule_timeout(timeout);
541 * Sends an associate packet to the iMON 2.4G.
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).
548 static int send_associate_24g(struct imon_context *ictx)
551 const unsigned char packet[8] = { 0x01, 0x00, 0x00, 0x00,
552 0x00, 0x00, 0x00, 0x20 };
555 pr_err("no context for device\n");
559 if (!ictx->dev_present_intf0) {
560 pr_err("no iMON device present\n");
564 memcpy(ictx->usb_tx_buf, packet, sizeof(packet));
565 retval = send_packet(ictx);
571 * Sends packets to setup and show clock on iMON display
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
577 static 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,
583 unsigned char clock_enable_pkt[IMON_CLOCK_ENABLE_PACKETS][8];
588 pr_err("no context for device\n");
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;
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;
610 if (ictx->product == 0xffdc) {
611 clock_enable_pkt[0][7] = 0x50;
612 clock_enable_pkt[1][7] = 0x51;
614 clock_enable_pkt[0][7] = 0x88;
615 clock_enable_pkt[1][7] = 0x8a;
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;
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;
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);
649 pr_err("send_packet failed for packet %d\n", i);
658 * These are the sysfs functions to handle the association on the iMON 2.4G LT.
660 static ssize_t show_associate_remote(struct device *d,
661 struct device_attribute *attr,
664 struct imon_context *ictx = dev_get_drvdata(d);
669 mutex_lock(&ictx->lock);
670 if (ictx->rf_isassociating)
671 strcpy(buf, "associating\n");
673 strcpy(buf, "closed\n");
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 "
678 mutex_unlock(&ictx->lock);
682 static ssize_t store_associate_remote(struct device *d,
683 struct device_attribute *attr,
684 const char *buf, size_t count)
686 struct imon_context *ictx;
688 ictx = dev_get_drvdata(d);
693 mutex_lock(&ictx->lock);
694 ictx->rf_isassociating = true;
695 send_associate_24g(ictx);
696 mutex_unlock(&ictx->lock);
702 * sysfs functions to control internal imon clock
704 static ssize_t show_imon_clock(struct device *d,
705 struct device_attribute *attr, char *buf)
707 struct imon_context *ictx = dev_get_drvdata(d);
713 mutex_lock(&ictx->lock);
715 if (!ictx->display_supported) {
716 len = snprintf(buf, PAGE_SIZE, "Not supported.");
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" : "");
725 mutex_unlock(&ictx->lock);
730 static ssize_t store_imon_clock(struct device *d,
731 struct device_attribute *attr,
732 const char *buf, size_t count)
734 struct imon_context *ictx = dev_get_drvdata(d);
736 unsigned int year, month, day, dow, hour, minute, second;
741 mutex_lock(&ictx->lock);
743 if (!ictx->display_supported) {
746 } else if (ictx->display_isopen) {
751 if (sscanf(buf, "%u %u %u %u %u %u %u", &year, &month, &day, &dow,
752 &hour, &minute, &second) != 7) {
757 if ((month < 1 || month > 12) ||
758 (day < 1 || day > 31) || (dow > 6) ||
759 (hour > 23) || (minute > 59) || (second > 59)) {
764 retval = send_set_imon_clock(ictx, year, month, day, dow,
765 hour, minute, second);
771 mutex_unlock(&ictx->lock);
777 static DEVICE_ATTR(imon_clock, S_IWUSR | S_IRUGO, show_imon_clock,
780 static DEVICE_ATTR(associate_remote, S_IWUSR | S_IRUGO, show_associate_remote,
781 store_associate_remote);
783 static struct attribute *imon_display_sysfs_entries[] = {
784 &dev_attr_imon_clock.attr,
788 static struct attribute_group imon_display_attr_group = {
789 .attrs = imon_display_sysfs_entries
792 static struct attribute *imon_rf_sysfs_entries[] = {
793 &dev_attr_associate_remote.attr,
797 static struct attribute_group imon_rf_attr_group = {
798 .attrs = imon_rf_sysfs_entries
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.
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.
812 static ssize_t vfd_write(struct file *file, const char *buf,
813 size_t n_bytes, loff_t *pos)
819 struct imon_context *ictx;
820 const unsigned char vfd_packet6[] = {
821 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
823 ictx = file->private_data;
825 pr_err("no context for device\n");
829 mutex_lock(&ictx->lock);
831 if (!ictx->dev_present_intf0) {
832 pr_err("no iMON device present\n");
837 if (n_bytes <= 0 || n_bytes > 32) {
838 pr_err("invalid payload size\n");
843 if (copy_from_user(ictx->tx.data_buf, buf, n_bytes)) {
848 /* Pad with spaces */
849 for (i = n_bytes; i < 32; ++i)
850 ictx->tx.data_buf[i] = ' ';
852 for (i = 32; i < 35; ++i)
853 ictx->tx.data_buf[i] = 0xFF;
859 memcpy(ictx->usb_tx_buf, ictx->tx.data_buf + offset, 7);
860 ictx->usb_tx_buf[7] = (unsigned char) seq;
862 retval = send_packet(ictx);
864 pr_err("send packet failed for packet #%d\n", seq / 2);
871 } while (offset < 35);
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);
878 pr_err("send packet failed for packet #%d\n", seq / 2);
881 mutex_unlock(&ictx->lock);
883 return (!retval) ? n_bytes : retval;
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).
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...
899 static ssize_t lcd_write(struct file *file, const char *buf,
900 size_t n_bytes, loff_t *pos)
903 struct imon_context *ictx;
905 ictx = file->private_data;
907 pr_err("no context for device\n");
911 mutex_lock(&ictx->lock);
913 if (!ictx->display_supported) {
914 pr_err("no iMON display present\n");
920 pr_err("invalid payload size: %d (expected 8)\n", (int)n_bytes);
925 if (copy_from_user(ictx->usb_tx_buf, buf, 8)) {
930 retval = send_packet(ictx);
932 pr_err("send packet failed!\n");
935 dev_dbg(ictx->dev, "%s: write %d bytes to LCD\n",
936 __func__, (int) n_bytes);
939 mutex_unlock(&ictx->lock);
940 return (!retval) ? n_bytes : retval;
944 * Callback function for USB core API: transmit data
946 static void usb_tx_callback(struct urb *urb)
948 struct imon_context *ictx;
952 ictx = (struct imon_context *)urb->context;
956 ictx->tx.status = urb->status;
958 /* notify waiters that write has finished */
959 ictx->tx.busy = false;
960 smp_rmb(); /* ensure later readers know we're not busy */
961 complete(&ictx->tx.finished);
965 * report touchscreen input
967 static void imon_touch_display_timeout(unsigned long data)
969 struct imon_context *ictx = (struct imon_context *)data;
971 if (ictx->display_type != IMON_DISPLAY_TYPE_VGA)
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);
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.
986 static int imon_ir_change_protocol(struct rc_dev *rc, u64 rc_type)
989 struct imon_context *ictx = rc->priv;
990 struct device *dev = ictx->dev;
992 unsigned char ir_proto_packet[] = {
993 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 };
995 if (rc_type && !(rc_type & rc->allowed_protos))
996 dev_warn(dev, "Looks like you're trying to use an IR protocol "
997 "this device does not support\n");
1001 dev_dbg(dev, "Configuring IR receiver for MCE protocol\n");
1002 ir_proto_packet[0] = 0x01;
1005 case RC_TYPE_UNKNOWN:
1007 dev_dbg(dev, "Configuring IR receiver for iMON protocol\n");
1008 if (pad_stabilize && !nomouse)
1011 dev_dbg(dev, "PAD stabilize functionality disabled\n");
1014 /* ir_proto_packet[0] = 0x00; // already the default */
1015 rc_type = RC_TYPE_OTHER;
1018 dev_warn(dev, "Unsupported IR protocol specified, overriding "
1019 "to iMON IR protocol\n");
1020 if (pad_stabilize && !nomouse)
1023 dev_dbg(dev, "PAD stabilize functionality disabled\n");
1026 /* ir_proto_packet[0] = 0x00; // already the default */
1027 rc_type = RC_TYPE_OTHER;
1031 memcpy(ictx->usb_tx_buf, &ir_proto_packet, sizeof(ir_proto_packet));
1033 retval = send_packet(ictx);
1037 ictx->rc_type = rc_type;
1038 ictx->pad_mouse = pad_mouse;
1044 static inline int tv2int(const struct timeval *a, const struct timeval *b)
1049 if (b->tv_usec > a->tv_usec) {
1054 usecs += a->tv_usec - b->tv_usec;
1056 sec += a->tv_sec - b->tv_sec;
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.
1075 static int stabilize(int a, int b, u16 timeout, u16 threshold)
1078 static struct timeval prev_time = {0, 0};
1079 static struct timeval hit_time = {0, 0};
1080 static int x, y, prev_result, hits;
1084 do_gettimeofday(&ct);
1085 msec = tv2int(&ct, &prev_time);
1086 msec_hit = tv2int(&ct, &hit_time);
1099 if (abs(x) > threshold || abs(y) > threshold) {
1100 if (abs(y) > abs(x))
1101 result = (y > 0) ? 0x7F : 0x80;
1103 result = (x > 0) ? 0x7F00 : 0x8000;
1108 if (result == prev_result) {
1114 y = 17 * threshold / 30;
1117 y -= 17 * threshold / 30;
1120 x = 17 * threshold / 30;
1123 x -= 17 * threshold / 30;
1128 if (hits == 2 && msec_hit < timeout) {
1133 prev_result = result;
1142 static u32 imon_remote_key_lookup(struct imon_context *ictx, u32 scancode)
1146 bool is_release_code = false;
1148 /* Look for the initial press of a button */
1149 keycode = rc_g_keycode_from_table(ictx->rdev, scancode);
1150 ictx->rc_toggle = 0x0;
1151 ictx->rc_scancode = scancode;
1153 /* Look for the release of a button */
1154 if (keycode == KEY_RESERVED) {
1155 release = scancode & ~0x4000;
1156 keycode = rc_g_keycode_from_table(ictx->rdev, release);
1157 if (keycode != KEY_RESERVED)
1158 is_release_code = true;
1161 ictx->release_code = is_release_code;
1166 static u32 imon_mce_key_lookup(struct imon_context *ictx, u32 scancode)
1170 #define MCE_KEY_MASK 0x7000
1171 #define MCE_TOGGLE_BIT 0x8000
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...
1181 if (scancode & 0x80000000)
1182 scancode = scancode | MCE_KEY_MASK | MCE_TOGGLE_BIT;
1184 ictx->rc_scancode = scancode;
1185 keycode = rc_g_keycode_from_table(ictx->rdev, scancode);
1187 /* not used in mce mode, but make sure we know its false */
1188 ictx->release_code = false;
1193 static u32 imon_panel_key_lookup(u64 code)
1196 u32 keycode = KEY_RESERVED;
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;
1208 static bool imon_mouse_event(struct imon_context *ictx,
1209 unsigned char *buf, int len)
1211 char rel_x = 0x00, rel_y = 0x00;
1213 bool mouse_input = true;
1215 unsigned long flags;
1217 spin_lock_irqsave(&ictx->kc_lock, flags);
1219 /* newer iMON device PAD or mouse button */
1220 if (ictx->product != 0xffdc && (buf[0] & 0x01) && len == 5) {
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;
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;
1236 rel_y = rel_y + rel_y / 2;
1238 /* some ffdc devices decode mouse buttons differently... */
1239 } else if (ictx->product == 0xffdc && (buf[0] == 0x68)) {
1241 /* ch+/- buttons, which we use for an emulated scroll wheel */
1242 } else if (ictx->kc == KEY_CHANNELUP && (buf[2] & 0x40) != 0x40) {
1244 } else if (ictx->kc == KEY_CHANNELDOWN && (buf[2] & 0x40) != 0x40) {
1247 mouse_input = false;
1249 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1252 dev_dbg(ictx->dev, "sending mouse data via input subsystem\n");
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);
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);
1264 input_sync(ictx->idev);
1265 spin_lock_irqsave(&ictx->kc_lock, flags);
1266 ictx->last_keycode = ictx->kc;
1267 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1273 static void imon_touch_event(struct imon_context *ictx, unsigned char *buf)
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);
1284 static void imon_pad_to_keys(struct imon_context *ictx, unsigned char *buf)
1287 char rel_x = 0x00, rel_y = 0x00;
1288 u16 timeout, threshold;
1289 u32 scancode = KEY_RESERVED;
1290 unsigned long flags;
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.
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;
1309 if (ictx->rc_type == RC_TYPE_OTHER && pad_stabilize) {
1310 if ((buf[1] == 0) && ((rel_x != 0) || (rel_y != 0))) {
1311 dir = stabilize((int)rel_x, (int)rel_y,
1312 timeout, threshold);
1314 spin_lock_irqsave(&ictx->kc_lock,
1316 ictx->kc = KEY_UNKNOWN;
1317 spin_unlock_irqrestore(&ictx->kc_lock,
1321 buf[2] = dir & 0xFF;
1322 buf[3] = (dir >> 8) & 0xFF;
1323 scancode = be32_to_cpu(*((u32 *)buf));
1327 * Hack alert: instead of using keycodes, we have
1328 * to use hard-coded scancodes here...
1330 if (abs(rel_y) > abs(rel_x)) {
1331 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1334 scancode = 0x01007f00; /* KEY_DOWN */
1336 scancode = 0x01008000; /* KEY_UP */
1339 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
1341 scancode = 0x0100007f; /* KEY_RIGHT */
1343 scancode = 0x01000080; /* KEY_LEFT */
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.
1358 timeout = 10; /* in msecs */
1359 /* (2*threshold) x (2*threshold) square */
1360 threshold = pad_thresh ? pad_thresh : 15;
1363 rel_x = (buf[1] & 0x08) | (buf[1] & 0x10) >> 2 |
1364 (buf[1] & 0x20) >> 4 | (buf[1] & 0x40) >> 6;
1368 rel_y = (buf[2] & 0x08) | (buf[2] & 0x10) >> 2 |
1369 (buf[2] & 0x20) >> 4 | (buf[2] & 0x40) >> 6;
1374 buf[1] = buf[4] = buf[5] = buf[6] = buf[7] = 0;
1376 if (ictx->rc_type == RC_TYPE_OTHER && pad_stabilize) {
1377 dir = stabilize((int)rel_x, (int)rel_y,
1378 timeout, threshold);
1380 spin_lock_irqsave(&ictx->kc_lock, flags);
1381 ictx->kc = KEY_UNKNOWN;
1382 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1385 buf[2] = dir & 0xFF;
1386 buf[3] = (dir >> 8) & 0xFF;
1387 scancode = be32_to_cpu(*((u32 *)buf));
1390 * Hack alert: instead of using keycodes, we have
1391 * to use hard-coded scancodes here...
1393 if (abs(rel_y) > abs(rel_x)) {
1394 buf[2] = (rel_y > 0) ? 0x7F : 0x80;
1397 scancode = 0x01007f00; /* KEY_DOWN */
1399 scancode = 0x01008000; /* KEY_UP */
1402 buf[3] = (rel_x > 0) ? 0x7F : 0x80;
1404 scancode = 0x0100007f; /* KEY_RIGHT */
1406 scancode = 0x01000080; /* KEY_LEFT */
1412 spin_lock_irqsave(&ictx->kc_lock, flags);
1413 ictx->kc = imon_remote_key_lookup(ictx, scancode);
1414 spin_unlock_irqrestore(&ictx->kc_lock, flags);
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.
1423 static int imon_parse_press_type(struct imon_context *ictx,
1424 unsigned char *buf, u8 ktype)
1427 unsigned long flags;
1429 spin_lock_irqsave(&ictx->kc_lock, flags);
1431 /* key release of 0x02XXXXXX key */
1432 if (ictx->kc == KEY_RESERVED && buf[0] == 0x02 && buf[3] == 0x00)
1433 ictx->kc = ictx->last_keycode;
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;
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;
1445 /* mce-specific button handling, no keyup events */
1446 else if (ktype == IMON_KEY_MCE) {
1447 ictx->rc_toggle = buf[2];
1450 /* incoherent or irrelevant data */
1451 } else if (ictx->kc == KEY_RESERVED)
1452 press_type = -EINVAL;
1454 /* key release of 0xXXXXXXb7 key */
1455 else if (ictx->release_code)
1458 /* this is a button press */
1462 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1468 * Process the incoming packet
1470 static void imon_incoming_packet(struct imon_context *ictx,
1471 struct urb *urb, int intf)
1473 int len = urb->actual_length;
1474 unsigned char *buf = urb->transfer_buffer;
1475 struct device *dev = ictx->dev;
1476 unsigned long flags;
1478 bool norelease = false;
1484 static struct timeval prev_time = { 0, 0 };
1487 /* filter out junk data on the older 0xffdc imon devices */
1488 if ((buf[0] == 0xff) && (buf[1] == 0xff) && (buf[2] == 0xff))
1491 /* Figure out what key was pressed */
1492 if (len == 8 && buf[7] == 0xee) {
1493 scancode = be64_to_cpu(*((u64 *)buf));
1494 ktype = IMON_KEY_PANEL;
1495 kc = imon_panel_key_lookup(scancode);
1497 scancode = be32_to_cpu(*((u32 *)buf));
1498 if (ictx->rc_type == RC_TYPE_RC6) {
1499 ktype = IMON_KEY_IMON;
1501 ktype = IMON_KEY_MCE;
1502 kc = imon_mce_key_lookup(ictx, scancode);
1504 ktype = IMON_KEY_IMON;
1505 kc = imon_remote_key_lookup(ictx, scancode);
1509 spin_lock_irqsave(&ictx->kc_lock, flags);
1510 /* keyboard/mouse mode toggle button */
1511 if (kc == KEY_KEYBOARD && !ictx->release_code) {
1512 ictx->last_keycode = kc;
1514 ictx->pad_mouse = ~(ictx->pad_mouse) & 0x1;
1515 dev_dbg(dev, "toggling to %s mode\n",
1516 ictx->pad_mouse ? "mouse" : "keyboard");
1517 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1520 ictx->pad_mouse = 0;
1521 dev_dbg(dev, "mouse mode disabled, passing key value\n");
1526 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1528 /* send touchscreen events through input subsystem if touchpad data */
1529 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA && len == 8 &&
1531 imon_touch_event(ictx, buf);
1534 /* look for mouse events with pad in mouse mode */
1535 } else if (ictx->pad_mouse) {
1536 if (imon_mouse_event(ictx, buf, len))
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))) {
1545 imon_pad_to_keys(ictx, buf);
1550 printk(KERN_INFO "intf%d decoded packet: ", intf);
1551 for (i = 0; i < len; ++i)
1552 printk("%02x ", buf[i]);
1556 press_type = imon_parse_press_type(ictx, buf, ktype);
1558 goto not_input_data;
1560 spin_lock_irqsave(&ictx->kc_lock, flags);
1561 if (ictx->kc == KEY_UNKNOWN)
1563 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1565 if (ktype != IMON_KEY_PANEL) {
1566 if (press_type == 0)
1567 rc_keyup(ictx->rdev);
1569 rc_keydown(ictx->rdev, ictx->rc_scancode, ictx->rc_toggle);
1570 spin_lock_irqsave(&ictx->kc_lock, flags);
1571 ictx->last_keycode = ictx->kc;
1572 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1577 /* Only panel type events left to process now */
1578 spin_lock_irqsave(&ictx->kc_lock, flags);
1580 /* KEY_MUTE repeats from knob need to be suppressed */
1581 if (ictx->kc == KEY_MUTE && ictx->kc == ictx->last_keycode) {
1582 do_gettimeofday(&t);
1583 msec = tv2int(&t, &prev_time);
1585 if (msec < ictx->idev->rep[REP_DELAY]) {
1586 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1592 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1594 input_report_key(ictx->idev, kc, press_type);
1595 input_sync(ictx->idev);
1597 /* panel keys don't generate a release */
1598 input_report_key(ictx->idev, kc, 0);
1599 input_sync(ictx->idev);
1601 ictx->last_keycode = kc;
1606 spin_unlock_irqrestore(&ictx->kc_lock, flags);
1607 dev_info(dev, "%s: unknown keypress, code 0x%llx\n", __func__,
1608 (long long)scancode);
1613 dev_warn(dev, "imon %s: invalid incoming packet "
1614 "size (len = %d, intf%d)\n", __func__, len, intf);
1618 /* iMON 2.4G associate frame */
1619 if (buf[0] == 0x00 &&
1620 buf[2] == 0xFF && /* REFID */
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",
1628 ictx->rf_isassociating = false;
1633 * Callback function for USB core API: receive data
1635 static void usb_rx_callback_intf0(struct urb *urb)
1637 struct imon_context *ictx;
1643 ictx = (struct imon_context *)urb->context;
1647 switch (urb->status) {
1648 case -ENOENT: /* usbcore unlink successful! */
1651 case -ESHUTDOWN: /* transport endpoint was shut down */
1655 imon_incoming_packet(ictx, urb, intfnum);
1659 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1660 __func__, urb->status);
1664 usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
1667 static void usb_rx_callback_intf1(struct urb *urb)
1669 struct imon_context *ictx;
1675 ictx = (struct imon_context *)urb->context;
1679 switch (urb->status) {
1680 case -ENOENT: /* usbcore unlink successful! */
1683 case -ESHUTDOWN: /* transport endpoint was shut down */
1687 imon_incoming_packet(ictx, urb, intfnum);
1691 dev_warn(ictx->dev, "imon %s: status(%d): ignored\n",
1692 __func__, urb->status);
1696 usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
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.
1708 static void imon_get_ffdc_type(struct imon_context *ictx)
1710 u8 ffdc_cfg_byte = ictx->usb_rx_buf[6];
1711 u8 detected_display_type = IMON_DISPLAY_TYPE_NONE;
1712 u64 allowed_protos = RC_TYPE_OTHER;
1714 switch (ffdc_cfg_byte) {
1715 /* iMON Knob, no display, iMON IR + vol knob */
1717 dev_info(ictx->dev, "0xffdc iMON Knob, iMON IR");
1718 ictx->display_supported = false;
1720 /* iMON 2.4G LT (usb stick), no display, iMON RF */
1722 dev_info(ictx->dev, "0xffdc iMON 2.4G LT, iMON RF");
1723 ictx->display_supported = false;
1724 ictx->rf_device = true;
1726 /* iMON VFD, no IR (does have vol knob tho) */
1728 dev_info(ictx->dev, "0xffdc iMON VFD + knob, no IR");
1729 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1731 /* iMON VFD, iMON IR */
1734 dev_info(ictx->dev, "0xffdc iMON VFD, iMON IR");
1735 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1737 /* iMON VFD, MCE IR */
1739 dev_info(ictx->dev, "0xffdc iMON VFD, MCE IR");
1740 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1741 allowed_protos = RC_TYPE_RC6;
1743 /* iMON LCD, MCE IR */
1745 dev_info(ictx->dev, "0xffdc iMON LCD, MCE IR");
1746 detected_display_type = IMON_DISPLAY_TYPE_LCD;
1747 allowed_protos = RC_TYPE_RC6;
1750 dev_info(ictx->dev, "Unknown 0xffdc device, "
1751 "defaulting to VFD and iMON IR");
1752 detected_display_type = IMON_DISPLAY_TYPE_VFD;
1756 printk(KERN_CONT " (id 0x%02x)\n", ffdc_cfg_byte);
1758 ictx->display_type = detected_display_type;
1759 ictx->rc_type = allowed_protos;
1762 static void imon_set_display_type(struct imon_context *ictx)
1764 u8 configured_display_type = IMON_DISPLAY_TYPE_VFD;
1767 * Try to auto-detect the type of display if the user hasn't set
1768 * it by hand via the display_type modparam. Default is VFD.
1771 if (display_type == IMON_DISPLAY_TYPE_AUTO) {
1772 switch (ictx->product) {
1774 /* set in imon_get_ffdc_type() */
1775 configured_display_type = ictx->display_type;
1779 configured_display_type = IMON_DISPLAY_TYPE_VGA;
1784 configured_display_type = IMON_DISPLAY_TYPE_LCD;
1790 configured_display_type = IMON_DISPLAY_TYPE_NONE;
1791 ictx->display_supported = false;
1796 configured_display_type = IMON_DISPLAY_TYPE_VFD;
1800 configured_display_type = display_type;
1801 if (display_type == IMON_DISPLAY_TYPE_NONE)
1802 ictx->display_supported = false;
1804 ictx->display_supported = true;
1805 dev_info(ictx->dev, "%s: overriding display type to %d via "
1806 "modparam\n", __func__, display_type);
1809 ictx->display_type = configured_display_type;
1812 static struct rc_dev *imon_init_rdev(struct imon_context *ictx)
1814 struct rc_dev *rdev;
1816 const unsigned char fp_packet[] = { 0x40, 0x00, 0x00, 0x00,
1817 0x00, 0x00, 0x00, 0x88 };
1819 rdev = rc_allocate_device();
1821 dev_err(ictx->dev, "remote control dev allocation failed\n");
1825 snprintf(ictx->name_rdev, sizeof(ictx->name_rdev),
1826 "iMON Remote (%04x:%04x)", ictx->vendor, ictx->product);
1827 usb_make_path(ictx->usbdev_intf0, ictx->phys_rdev,
1828 sizeof(ictx->phys_rdev));
1829 strlcat(ictx->phys_rdev, "/input0", sizeof(ictx->phys_rdev));
1831 rdev->input_name = ictx->name_rdev;
1832 rdev->input_phys = ictx->phys_rdev;
1833 usb_to_input_id(ictx->usbdev_intf0, &rdev->input_id);
1834 rdev->dev.parent = ictx->dev;
1837 rdev->driver_type = RC_DRIVER_SCANCODE;
1838 rdev->allowed_protos = RC_TYPE_OTHER | RC_TYPE_RC6; /* iMON PAD or MCE */
1839 rdev->change_protocol = imon_ir_change_protocol;
1840 rdev->driver_name = MOD_NAME;
1842 /* Enable front-panel buttons and/or knobs */
1843 memcpy(ictx->usb_tx_buf, &fp_packet, sizeof(fp_packet));
1844 ret = send_packet(ictx);
1845 /* Not fatal, but warn about it */
1847 dev_info(ictx->dev, "panel buttons/knobs setup failed\n");
1849 if (ictx->product == 0xffdc) {
1850 imon_get_ffdc_type(ictx);
1851 rdev->allowed_protos = ictx->rc_type;
1854 imon_set_display_type(ictx);
1856 if (ictx->rc_type == RC_TYPE_RC6)
1857 rdev->map_name = RC_MAP_IMON_MCE;
1859 rdev->map_name = RC_MAP_IMON_PAD;
1861 ret = rc_register_device(rdev);
1863 dev_err(ictx->dev, "remote input dev register failed\n");
1870 rc_free_device(rdev);
1874 static struct input_dev *imon_init_idev(struct imon_context *ictx)
1876 struct input_dev *idev;
1879 idev = input_allocate_device();
1881 dev_err(ictx->dev, "input dev allocation failed\n");
1885 snprintf(ictx->name_idev, sizeof(ictx->name_idev),
1886 "iMON Panel, Knob and Mouse(%04x:%04x)",
1887 ictx->vendor, ictx->product);
1888 idev->name = ictx->name_idev;
1890 usb_make_path(ictx->usbdev_intf0, ictx->phys_idev,
1891 sizeof(ictx->phys_idev));
1892 strlcat(ictx->phys_idev, "/input1", sizeof(ictx->phys_idev));
1893 idev->phys = ictx->phys_idev;
1895 idev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | BIT_MASK(EV_REL);
1897 idev->keybit[BIT_WORD(BTN_MOUSE)] =
1898 BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT);
1899 idev->relbit[0] = BIT_MASK(REL_X) | BIT_MASK(REL_Y) |
1900 BIT_MASK(REL_WHEEL);
1902 /* panel and/or knob code support */
1903 for (i = 0; i < ARRAY_SIZE(imon_panel_key_table); i++) {
1904 u32 kc = imon_panel_key_table[i].keycode;
1905 __set_bit(kc, idev->keybit);
1908 usb_to_input_id(ictx->usbdev_intf0, &idev->id);
1909 idev->dev.parent = ictx->dev;
1910 input_set_drvdata(idev, ictx);
1912 ret = input_register_device(idev);
1914 dev_err(ictx->dev, "input dev register failed\n");
1921 input_free_device(idev);
1925 static struct input_dev *imon_init_touch(struct imon_context *ictx)
1927 struct input_dev *touch;
1930 touch = input_allocate_device();
1932 dev_err(ictx->dev, "touchscreen input dev allocation failed\n");
1933 goto touch_alloc_failed;
1936 snprintf(ictx->name_touch, sizeof(ictx->name_touch),
1937 "iMON USB Touchscreen (%04x:%04x)",
1938 ictx->vendor, ictx->product);
1939 touch->name = ictx->name_touch;
1941 usb_make_path(ictx->usbdev_intf1, ictx->phys_touch,
1942 sizeof(ictx->phys_touch));
1943 strlcat(ictx->phys_touch, "/input2", sizeof(ictx->phys_touch));
1944 touch->phys = ictx->phys_touch;
1947 BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
1948 touch->keybit[BIT_WORD(BTN_TOUCH)] =
1949 BIT_MASK(BTN_TOUCH);
1950 input_set_abs_params(touch, ABS_X,
1952 input_set_abs_params(touch, ABS_Y,
1955 input_set_drvdata(touch, ictx);
1957 usb_to_input_id(ictx->usbdev_intf1, &touch->id);
1958 touch->dev.parent = ictx->dev;
1959 ret = input_register_device(touch);
1961 dev_info(ictx->dev, "touchscreen input dev register failed\n");
1962 goto touch_register_failed;
1967 touch_register_failed:
1968 input_free_device(ictx->touch);
1974 static bool imon_find_endpoints(struct imon_context *ictx,
1975 struct usb_host_interface *iface_desc)
1977 struct usb_endpoint_descriptor *ep;
1978 struct usb_endpoint_descriptor *rx_endpoint = NULL;
1979 struct usb_endpoint_descriptor *tx_endpoint = NULL;
1980 int ifnum = iface_desc->desc.bInterfaceNumber;
1981 int num_endpts = iface_desc->desc.bNumEndpoints;
1982 int i, ep_dir, ep_type;
1983 bool ir_ep_found = false;
1984 bool display_ep_found = false;
1985 bool tx_control = false;
1988 * Scan the endpoint list and set:
1989 * first input endpoint = IR endpoint
1990 * first output endpoint = display endpoint
1992 for (i = 0; i < num_endpts && !(ir_ep_found && display_ep_found); ++i) {
1993 ep = &iface_desc->endpoint[i].desc;
1994 ep_dir = ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK;
1995 ep_type = ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
1997 if (!ir_ep_found && ep_dir == USB_DIR_IN &&
1998 ep_type == USB_ENDPOINT_XFER_INT) {
2002 dev_dbg(ictx->dev, "%s: found IR endpoint\n", __func__);
2004 } else if (!display_ep_found && ep_dir == USB_DIR_OUT &&
2005 ep_type == USB_ENDPOINT_XFER_INT) {
2007 display_ep_found = true;
2008 dev_dbg(ictx->dev, "%s: found display endpoint\n", __func__);
2013 ictx->rx_endpoint_intf0 = rx_endpoint;
2015 * tx is used to send characters to lcd/vfd, associate RF
2016 * remotes, set IR protocol, and maybe more...
2018 ictx->tx_endpoint = tx_endpoint;
2020 ictx->rx_endpoint_intf1 = rx_endpoint;
2024 * If we didn't find a display endpoint, this is probably one of the
2025 * newer iMON devices that use control urb instead of interrupt
2027 if (!display_ep_found) {
2029 display_ep_found = true;
2030 dev_dbg(ictx->dev, "%s: device uses control endpoint, not "
2031 "interface OUT endpoint\n", __func__);
2035 * Some iMON receivers have no display. Unfortunately, it seems
2036 * that SoundGraph recycles device IDs between devices both with
2039 if (ictx->display_type == IMON_DISPLAY_TYPE_NONE) {
2040 display_ep_found = false;
2041 dev_dbg(ictx->dev, "%s: device has no display\n", __func__);
2045 * iMON Touch devices have a VGA touchscreen, but no "display", as
2046 * that refers to e.g. /dev/lcd0 (a character device LCD or VFD).
2048 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2049 display_ep_found = false;
2050 dev_dbg(ictx->dev, "%s: iMON Touch device found\n", __func__);
2053 /* Input endpoint is mandatory */
2055 pr_err("no valid input (IR) endpoint found\n");
2057 ictx->tx_control = tx_control;
2059 if (display_ep_found)
2060 ictx->display_supported = true;
2066 static struct imon_context *imon_init_intf0(struct usb_interface *intf)
2068 struct imon_context *ictx;
2071 struct device *dev = &intf->dev;
2072 struct usb_host_interface *iface_desc;
2075 ictx = kzalloc(sizeof(struct imon_context), GFP_KERNEL);
2077 dev_err(dev, "%s: kzalloc failed for context", __func__);
2080 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2082 dev_err(dev, "%s: usb_alloc_urb failed for IR urb", __func__);
2083 goto rx_urb_alloc_failed;
2085 tx_urb = usb_alloc_urb(0, GFP_KERNEL);
2087 dev_err(dev, "%s: usb_alloc_urb failed for display urb",
2089 goto tx_urb_alloc_failed;
2092 mutex_init(&ictx->lock);
2093 spin_lock_init(&ictx->kc_lock);
2095 mutex_lock(&ictx->lock);
2098 ictx->usbdev_intf0 = usb_get_dev(interface_to_usbdev(intf));
2099 ictx->dev_present_intf0 = true;
2100 ictx->rx_urb_intf0 = rx_urb;
2101 ictx->tx_urb = tx_urb;
2102 ictx->rf_device = false;
2104 ictx->vendor = le16_to_cpu(ictx->usbdev_intf0->descriptor.idVendor);
2105 ictx->product = le16_to_cpu(ictx->usbdev_intf0->descriptor.idProduct);
2108 iface_desc = intf->cur_altsetting;
2109 if (!imon_find_endpoints(ictx, iface_desc)) {
2110 goto find_endpoint_failed;
2113 ictx->idev = imon_init_idev(ictx);
2115 dev_err(dev, "%s: input device setup failed\n", __func__);
2116 goto idev_setup_failed;
2119 ictx->rdev = imon_init_rdev(ictx);
2121 dev_err(dev, "%s: rc device setup failed\n", __func__);
2122 goto rdev_setup_failed;
2125 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2126 usb_rcvintpipe(ictx->usbdev_intf0,
2127 ictx->rx_endpoint_intf0->bEndpointAddress),
2128 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2129 usb_rx_callback_intf0, ictx,
2130 ictx->rx_endpoint_intf0->bInterval);
2132 ret = usb_submit_urb(ictx->rx_urb_intf0, GFP_KERNEL);
2134 pr_err("usb_submit_urb failed for intf0 (%d)\n", ret);
2135 goto urb_submit_failed;
2141 rc_unregister_device(ictx->rdev);
2143 input_unregister_device(ictx->idev);
2145 find_endpoint_failed:
2146 mutex_unlock(&ictx->lock);
2147 usb_free_urb(tx_urb);
2148 tx_urb_alloc_failed:
2149 usb_free_urb(rx_urb);
2150 rx_urb_alloc_failed:
2153 dev_err(dev, "unable to initialize intf0, err %d\n", ret);
2158 static struct imon_context *imon_init_intf1(struct usb_interface *intf,
2159 struct imon_context *ictx)
2162 struct usb_host_interface *iface_desc;
2165 rx_urb = usb_alloc_urb(0, GFP_KERNEL);
2167 pr_err("usb_alloc_urb failed for IR urb\n");
2168 goto rx_urb_alloc_failed;
2171 mutex_lock(&ictx->lock);
2173 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2174 init_timer(&ictx->ttimer);
2175 ictx->ttimer.data = (unsigned long)ictx;
2176 ictx->ttimer.function = imon_touch_display_timeout;
2179 ictx->usbdev_intf1 = usb_get_dev(interface_to_usbdev(intf));
2180 ictx->dev_present_intf1 = true;
2181 ictx->rx_urb_intf1 = rx_urb;
2184 iface_desc = intf->cur_altsetting;
2185 if (!imon_find_endpoints(ictx, iface_desc))
2186 goto find_endpoint_failed;
2188 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA) {
2189 ictx->touch = imon_init_touch(ictx);
2191 goto touch_setup_failed;
2195 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2196 usb_rcvintpipe(ictx->usbdev_intf1,
2197 ictx->rx_endpoint_intf1->bEndpointAddress),
2198 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2199 usb_rx_callback_intf1, ictx,
2200 ictx->rx_endpoint_intf1->bInterval);
2202 ret = usb_submit_urb(ictx->rx_urb_intf1, GFP_KERNEL);
2205 pr_err("usb_submit_urb failed for intf1 (%d)\n", ret);
2206 goto urb_submit_failed;
2213 input_unregister_device(ictx->touch);
2215 find_endpoint_failed:
2216 mutex_unlock(&ictx->lock);
2217 usb_free_urb(rx_urb);
2218 rx_urb_alloc_failed:
2219 dev_err(ictx->dev, "unable to initialize intf0, err %d\n", ret);
2224 static void imon_init_display(struct imon_context *ictx,
2225 struct usb_interface *intf)
2229 dev_dbg(ictx->dev, "Registering iMON display with sysfs\n");
2231 /* set up sysfs entry for built-in clock */
2232 ret = sysfs_create_group(&intf->dev.kobj, &imon_display_attr_group);
2234 dev_err(ictx->dev, "Could not create display sysfs "
2235 "entries(%d)", ret);
2237 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2238 ret = usb_register_dev(intf, &imon_lcd_class);
2240 ret = usb_register_dev(intf, &imon_vfd_class);
2242 /* Not a fatal error, so ignore */
2243 dev_info(ictx->dev, "could not get a minor number for "
2249 * Callback function for USB core API: Probe
2251 static int __devinit imon_probe(struct usb_interface *interface,
2252 const struct usb_device_id *id)
2254 struct usb_device *usbdev = NULL;
2255 struct usb_host_interface *iface_desc = NULL;
2256 struct usb_interface *first_if;
2257 struct device *dev = &interface->dev;
2258 int ifnum, code_length, sysfs_err;
2260 struct imon_context *ictx = NULL;
2261 struct imon_context *first_if_ctx = NULL;
2262 u16 vendor, product;
2264 code_length = BUF_CHUNK_SIZE * 8;
2266 usbdev = usb_get_dev(interface_to_usbdev(interface));
2267 iface_desc = interface->cur_altsetting;
2268 ifnum = iface_desc->desc.bInterfaceNumber;
2269 vendor = le16_to_cpu(usbdev->descriptor.idVendor);
2270 product = le16_to_cpu(usbdev->descriptor.idProduct);
2272 dev_dbg(dev, "%s: found iMON device (%04x:%04x, intf%d)\n",
2273 __func__, vendor, product, ifnum);
2275 /* prevent races probing devices w/multiple interfaces */
2276 mutex_lock(&driver_lock);
2278 first_if = usb_ifnum_to_if(usbdev, 0);
2279 first_if_ctx = usb_get_intfdata(first_if);
2282 ictx = imon_init_intf0(interface);
2284 pr_err("failed to initialize context!\n");
2290 /* this is the secondary interface on the device */
2291 ictx = imon_init_intf1(interface, first_if_ctx);
2293 pr_err("failed to attach to context!\n");
2300 usb_set_intfdata(interface, ictx);
2303 if (product == 0xffdc && ictx->rf_device) {
2304 sysfs_err = sysfs_create_group(&interface->dev.kobj,
2305 &imon_rf_attr_group);
2307 pr_err("Could not create RF sysfs entries(%d)\n",
2311 if (ictx->display_supported)
2312 imon_init_display(ictx, interface);
2315 dev_info(dev, "iMON device (%04x:%04x, intf%d) on "
2316 "usb<%d:%d> initialized\n", vendor, product, ifnum,
2317 usbdev->bus->busnum, usbdev->devnum);
2319 mutex_unlock(&ictx->lock);
2320 mutex_unlock(&driver_lock);
2325 mutex_unlock(&driver_lock);
2326 dev_err(dev, "unable to register, err %d\n", ret);
2332 * Callback function for USB core API: disconnect
2334 static void __devexit imon_disconnect(struct usb_interface *interface)
2336 struct imon_context *ictx;
2340 /* prevent races with multi-interface device probing and display_open */
2341 mutex_lock(&driver_lock);
2343 ictx = usb_get_intfdata(interface);
2345 ifnum = interface->cur_altsetting->desc.bInterfaceNumber;
2347 mutex_lock(&ictx->lock);
2350 * sysfs_remove_group is safe to call even if sysfs_create_group
2351 * hasn't been called
2353 sysfs_remove_group(&interface->dev.kobj, &imon_display_attr_group);
2354 sysfs_remove_group(&interface->dev.kobj, &imon_rf_attr_group);
2356 usb_set_intfdata(interface, NULL);
2358 /* Abort ongoing write */
2359 if (ictx->tx.busy) {
2360 usb_kill_urb(ictx->tx_urb);
2361 complete_all(&ictx->tx.finished);
2365 ictx->dev_present_intf0 = false;
2366 usb_kill_urb(ictx->rx_urb_intf0);
2367 input_unregister_device(ictx->idev);
2368 rc_unregister_device(ictx->rdev);
2369 if (ictx->display_supported) {
2370 if (ictx->display_type == IMON_DISPLAY_TYPE_LCD)
2371 usb_deregister_dev(interface, &imon_lcd_class);
2373 usb_deregister_dev(interface, &imon_vfd_class);
2376 ictx->dev_present_intf1 = false;
2377 usb_kill_urb(ictx->rx_urb_intf1);
2378 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2379 input_unregister_device(ictx->touch);
2382 if (!ictx->dev_present_intf0 && !ictx->dev_present_intf1) {
2383 if (ictx->display_type == IMON_DISPLAY_TYPE_VGA)
2384 del_timer_sync(&ictx->ttimer);
2385 mutex_unlock(&ictx->lock);
2386 if (!ictx->display_isopen)
2387 free_imon_context(ictx);
2389 mutex_unlock(&ictx->lock);
2391 mutex_unlock(&driver_lock);
2393 dev_dbg(dev, "%s: iMON device (intf%d) disconnected\n",
2397 static int imon_suspend(struct usb_interface *intf, pm_message_t message)
2399 struct imon_context *ictx = usb_get_intfdata(intf);
2400 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2403 usb_kill_urb(ictx->rx_urb_intf0);
2405 usb_kill_urb(ictx->rx_urb_intf1);
2410 static int imon_resume(struct usb_interface *intf)
2413 struct imon_context *ictx = usb_get_intfdata(intf);
2414 int ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
2417 usb_fill_int_urb(ictx->rx_urb_intf0, ictx->usbdev_intf0,
2418 usb_rcvintpipe(ictx->usbdev_intf0,
2419 ictx->rx_endpoint_intf0->bEndpointAddress),
2420 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2421 usb_rx_callback_intf0, ictx,
2422 ictx->rx_endpoint_intf0->bInterval);
2424 rc = usb_submit_urb(ictx->rx_urb_intf0, GFP_ATOMIC);
2427 usb_fill_int_urb(ictx->rx_urb_intf1, ictx->usbdev_intf1,
2428 usb_rcvintpipe(ictx->usbdev_intf1,
2429 ictx->rx_endpoint_intf1->bEndpointAddress),
2430 ictx->usb_rx_buf, sizeof(ictx->usb_rx_buf),
2431 usb_rx_callback_intf1, ictx,
2432 ictx->rx_endpoint_intf1->bInterval);
2434 rc = usb_submit_urb(ictx->rx_urb_intf1, GFP_ATOMIC);
2440 static int __init imon_init(void)
2444 rc = usb_register(&imon_driver);
2446 pr_err("usb register failed(%d)\n", rc);
2453 static void __exit imon_exit(void)
2455 usb_deregister(&imon_driver);
2458 module_init(imon_init);
2459 module_exit(imon_exit);