2 * imon.c: input and display driver for SoundGraph iMON IR/VFD/LCD
4 * Copyright(C) 2009 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 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/kernel.h>
32 #include <linux/module.h>
33 #include <linux/slab.h>
34 #include <linux/uaccess.h>
36 #include <linux/input.h>
37 #include <linux/usb.h>
38 #include <linux/usb/input.h>
39 #include <media/ir-core.h>
41 #include <linux/time.h>
42 #include <linux/timer.h>
44 #define MOD_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
45 #define MOD_DESC "Driver for SoundGraph iMON MultiMedia IR/Display"
46 #define MOD_NAME "imon"
47 #define MOD_VERSION "0.9.1"
49 #define DISPLAY_MINOR_BASE 144
50 #define DEVICE_NAME "lcd%d"
52 #define BUF_CHUNK_SIZE 8
55 #define BIT_DURATION 250 /* each bit received is 250us */
57 #define IMON_CLOCK_ENABLE_PACKETS 2
59 /*** P R O T O T Y P E S ***/
61 /* USB Callback prototypes */
62 static int imon_probe(struct usb_interface
*interface
,
63 const struct usb_device_id
*id
);
64 static void imon_disconnect(struct usb_interface
*interface
);
65 static void usb_rx_callback_intf0(struct urb
*urb
);
66 static void usb_rx_callback_intf1(struct urb
*urb
);
67 static void usb_tx_callback(struct urb
*urb
);
69 /* suspend/resume support */
70 static int imon_resume(struct usb_interface
*intf
);
71 static int imon_suspend(struct usb_interface
*intf
, pm_message_t message
);
73 /* Display file_operations function prototypes */
74 static int display_open(struct inode
*inode
, struct file
*file
);
75 static int display_close(struct inode
*inode
, struct file
*file
);
77 /* VFD write operation */
78 static ssize_t
vfd_write(struct file
*file
, const char *buf
,
79 size_t n_bytes
, loff_t
*pos
);
81 /* LCD file_operations override function prototypes */
82 static ssize_t
lcd_write(struct file
*file
, const char *buf
,
83 size_t n_bytes
, loff_t
*pos
);
85 /*** G L O B A L S ***/
89 struct ir_dev_props
*props
;
90 /* Newer devices have two interfaces */
91 struct usb_device
*usbdev_intf0
;
92 struct usb_device
*usbdev_intf1
;
94 bool display_supported
; /* not all controllers do */
95 bool display_isopen
; /* display port has been opened */
96 bool rf_device
; /* true if iMON 2.4G LT/DT RF device */
97 bool rf_isassociating
; /* RF remote associating */
98 bool dev_present_intf0
; /* USB device presence, interface 0 */
99 bool dev_present_intf1
; /* USB device presence, interface 1 */
101 struct mutex lock
; /* to lock this object */
102 wait_queue_head_t remove_ok
; /* For unexpected USB disconnects */
104 struct usb_endpoint_descriptor
*rx_endpoint_intf0
;
105 struct usb_endpoint_descriptor
*rx_endpoint_intf1
;
106 struct usb_endpoint_descriptor
*tx_endpoint
;
107 struct urb
*rx_urb_intf0
;
108 struct urb
*rx_urb_intf1
;
111 unsigned char usb_rx_buf
[8];
112 unsigned char usb_tx_buf
[8];
115 unsigned char data_buf
[35]; /* user data buffer */
116 struct completion finished
; /* wait for write to finish */
117 bool busy
; /* write in progress */
118 int status
; /* status of tx completion */
121 u16 vendor
; /* usb vendor ID */
122 u16 product
; /* usb product ID */
124 struct input_dev
*idev
; /* input device for remote */
125 struct input_dev
*touch
; /* input device for touchscreen */
127 u32 kc
; /* current input keycode */
128 u32 last_keycode
; /* last reported input keycode */
129 u64 ir_type
; /* iMON or MCE (RC6) IR protocol? */
130 u8 mce_toggle_bit
; /* last mce toggle bit */
131 bool release_code
; /* some keys send a release code */
133 u8 display_type
; /* store the display type */
134 bool pad_mouse
; /* toggle kbd(0)/mouse(1) mode */
136 char name_idev
[128]; /* input device name */
137 char phys_idev
[64]; /* input device phys path */
138 struct timer_list itimer
; /* input device timer, need for rc6 */
140 char name_touch
[128]; /* touch screen name */
141 char phys_touch
[64]; /* touch screen phys path */
142 struct timer_list ttimer
; /* touch screen timer */
143 int touch_x
; /* x coordinate on touchscreen */
144 int touch_y
; /* y coordinate on touchscreen */
147 #define TOUCH_TIMEOUT (HZ/30)
149 /* vfd character device file operations */
150 static const struct file_operations vfd_fops
= {
151 .owner
= THIS_MODULE
,
152 .open
= &display_open
,
154 .release
= &display_close
,
155 .llseek
= noop_llseek
,
158 /* lcd character device file operations */
159 static const struct file_operations lcd_fops
= {
160 .owner
= THIS_MODULE
,
161 .open
= &display_open
,
163 .release
= &display_close
,
164 .llseek
= noop_llseek
,
168 IMON_DISPLAY_TYPE_AUTO
= 0,
169 IMON_DISPLAY_TYPE_VFD
= 1,
170 IMON_DISPLAY_TYPE_LCD
= 2,
171 IMON_DISPLAY_TYPE_VGA
= 3,
172 IMON_DISPLAY_TYPE_NONE
= 4,
182 * USB Device ID for iMON USB Control Boards
184 * The Windows drivers contain 6 different inf files, more or less one for
185 * each new device until the 0x0034-0x0046 devices, which all use the same
186 * driver. Some of the devices in the 34-46 range haven't been definitively
187 * identified yet. Early devices have either a TriGem Computer, Inc. or a
188 * Samsung vendor ID (0x0aa8 and 0x04e8 respectively), while all later
189 * devices use the SoundGraph vendor ID (0x15c2). This driver only supports
190 * the ffdc and later devices, which do onboard decoding.
192 static struct usb_device_id imon_usb_id_table
[] = {
194 * Several devices with this same device ID, all use iMON_PAD.inf
195 * SoundGraph iMON PAD (IR & VFD)
196 * SoundGraph iMON PAD (IR & LCD)
197 * SoundGraph iMON Knob (IR only)
199 { USB_DEVICE(0x15c2, 0xffdc) },
202 * Newer devices, all driven by the latest iMON Windows driver, full
203 * list of device IDs extracted via 'strings Setup/data1.hdr |grep 15c2'
204 * Need user input to fill in details on unknown devices.
206 /* SoundGraph iMON OEM Touch LCD (IR & 7" VGA LCD) */
207 { USB_DEVICE(0x15c2, 0x0034) },
208 /* SoundGraph iMON OEM Touch LCD (IR & 4.3" VGA LCD) */
209 { USB_DEVICE(0x15c2, 0x0035) },
210 /* SoundGraph iMON OEM VFD (IR & VFD) */
211 { USB_DEVICE(0x15c2, 0x0036) },
212 /* device specifics unknown */
213 { USB_DEVICE(0x15c2, 0x0037) },
214 /* SoundGraph iMON OEM LCD (IR & LCD) */
215 { USB_DEVICE(0x15c2, 0x0038) },
216 /* SoundGraph iMON UltraBay (IR & LCD) */
217 { USB_DEVICE(0x15c2, 0x0039) },
218 /* device specifics unknown */
219 { USB_DEVICE(0x15c2, 0x003a) },
220 /* device specifics unknown */
221 { USB_DEVICE(0x15c2, 0x003b) },
222 /* SoundGraph iMON OEM Inside (IR only) */
223 { USB_DEVICE(0x15c2, 0x003c) },
224 /* device specifics unknown */
225 { USB_DEVICE(0x15c2, 0x003d) },
226 /* device specifics unknown */
227 { USB_DEVICE(0x15c2, 0x003e) },
228 /* device specifics unknown */
229 { USB_DEVICE(0x15c2, 0x003f) },
230 /* device specifics unknown */
231 { USB_DEVICE(0x15c2, 0x0040) },
232 /* SoundGraph iMON MINI (IR only) */
233 { USB_DEVICE(0x15c2, 0x0041) },
234 /* Antec Veris Multimedia Station EZ External (IR only) */
235 { USB_DEVICE(0x15c2, 0x0042) },
236 /* Antec Veris Multimedia Station Basic Internal (IR only) */
237 { USB_DEVICE(0x15c2, 0x0043) },
238 /* Antec Veris Multimedia Station Elite (IR & VFD) */
239 { USB_DEVICE(0x15c2, 0x0044) },
240 /* Antec Veris Multimedia Station Premiere (IR & LCD) */
241 { USB_DEVICE(0x15c2, 0x0045) },
242 /* device specifics unknown */
243 { USB_DEVICE(0x15c2, 0x0046) },
247 /* USB Device data */
248 static struct usb_driver imon_driver
= {
251 .disconnect
= imon_disconnect
,
252 .suspend
= imon_suspend
,
253 .resume
= imon_resume
,
254 .id_table
= imon_usb_id_table
,
257 static struct usb_class_driver imon_vfd_class
= {
260 .minor_base
= DISPLAY_MINOR_BASE
,
263 static struct usb_class_driver imon_lcd_class
= {
266 .minor_base
= DISPLAY_MINOR_BASE
,
269 /* imon receiver front panel/knob key table */
270 static const struct {
273 } imon_panel_key_table
[] = {
274 { 0x000000000f00ffeell
, KEY_PROG1
}, /* Go */
275 { 0x000000001f00ffeell
, KEY_AUDIO
},
276 { 0x000000002000ffeell
, KEY_VIDEO
},
277 { 0x000000002100ffeell
, KEY_CAMERA
},
278 { 0x000000002700ffeell
, KEY_DVD
},
279 { 0x000000002300ffeell
, KEY_TV
},
280 { 0x000000000500ffeell
, KEY_PREVIOUS
},
281 { 0x000000000700ffeell
, KEY_REWIND
},
282 { 0x000000000400ffeell
, KEY_STOP
},
283 { 0x000000003c00ffeell
, KEY_PLAYPAUSE
},
284 { 0x000000000800ffeell
, KEY_FASTFORWARD
},
285 { 0x000000000600ffeell
, KEY_NEXT
},
286 { 0x000000010000ffeell
, KEY_RIGHT
},
287 { 0x000001000000ffeell
, KEY_LEFT
},
288 { 0x000000003d00ffeell
, KEY_SELECT
},
289 { 0x000100000000ffeell
, KEY_VOLUMEUP
},
290 { 0x010000000000ffeell
, KEY_VOLUMEDOWN
},
291 { 0x000000000100ffeell
, KEY_MUTE
},
292 /* iMON Knob values */
293 { 0x000100ffffffffeell
, KEY_VOLUMEUP
},
294 { 0x010000ffffffffeell
, KEY_VOLUMEDOWN
},
295 { 0x000008ffffffffeell
, KEY_MUTE
},
298 /* to prevent races between open() and disconnect(), probing, etc */
299 static DEFINE_MUTEX(driver_lock
);
301 /* Module bookkeeping bits */
302 MODULE_AUTHOR(MOD_AUTHOR
);
303 MODULE_DESCRIPTION(MOD_DESC
);
304 MODULE_VERSION(MOD_VERSION
);
305 MODULE_LICENSE("GPL");
306 MODULE_DEVICE_TABLE(usb
, imon_usb_id_table
);
309 module_param(debug
, bool, S_IRUGO
| S_IWUSR
);
310 MODULE_PARM_DESC(debug
, "Debug messages: 0=no, 1=yes(default: no)");
312 /* lcd, vfd, vga or none? should be auto-detected, but can be overridden... */
313 static int display_type
;
314 module_param(display_type
, int, S_IRUGO
);
315 MODULE_PARM_DESC(display_type
, "Type of attached display. 0=autodetect, "
316 "1=vfd, 2=lcd, 3=vga, 4=none (default: autodetect)");
318 static int pad_stabilize
= 1;
319 module_param(pad_stabilize
, int, S_IRUGO
| S_IWUSR
);
320 MODULE_PARM_DESC(pad_stabilize
, "Apply stabilization algorithm to iMON PAD "
321 "presses in arrow key mode. 0=disable, 1=enable (default).");
324 * In certain use cases, mouse mode isn't really helpful, and could actually
325 * cause confusion, so allow disabling it when the IR device is open.
328 module_param(nomouse
, bool, S_IRUGO
| S_IWUSR
);
329 MODULE_PARM_DESC(nomouse
, "Disable mouse input device mode when IR device is "
330 "open. 0=don't disable, 1=disable. (default: don't disable)");
332 /* threshold at which a pad push registers as an arrow key in kbd mode */
333 static int pad_thresh
;
334 module_param(pad_thresh
, int, S_IRUGO
| S_IWUSR
);
335 MODULE_PARM_DESC(pad_thresh
, "Threshold at which a pad push registers as an "
336 "arrow key in kbd mode (default: 28)");
339 static void free_imon_context(struct imon_context
*ictx
)
341 struct device
*dev
= ictx
->dev
;
343 usb_free_urb(ictx
->tx_urb
);
344 usb_free_urb(ictx
->rx_urb_intf0
);
345 usb_free_urb(ictx
->rx_urb_intf1
);
348 dev_dbg(dev
, "%s: iMON context freed\n", __func__
);
352 * Called when the Display device (e.g. /dev/lcd0)
353 * is opened by the application.
355 static int display_open(struct inode
*inode
, struct file
*file
)
357 struct usb_interface
*interface
;
358 struct imon_context
*ictx
= NULL
;
362 /* prevent races with disconnect */
363 mutex_lock(&driver_lock
);
365 subminor
= iminor(inode
);
366 interface
= usb_find_interface(&imon_driver
, subminor
);
368 err("%s: could not find interface for minor %d",
373 ictx
= usb_get_intfdata(interface
);
376 err("%s: no context found for minor %d", __func__
, subminor
);
381 mutex_lock(&ictx
->lock
);
383 if (!ictx
->display_supported
) {
384 err("%s: display not supported by device", __func__
);
386 } else if (ictx
->display_isopen
) {
387 err("%s: display port is already open", __func__
);
390 ictx
->display_isopen
= true;
391 file
->private_data
= ictx
;
392 dev_dbg(ictx
->dev
, "display port opened\n");
395 mutex_unlock(&ictx
->lock
);
398 mutex_unlock(&driver_lock
);
403 * Called when the display device (e.g. /dev/lcd0)
404 * is closed by the application.
406 static int display_close(struct inode
*inode
, struct file
*file
)
408 struct imon_context
*ictx
= NULL
;
411 ictx
= file
->private_data
;
414 err("%s: no context for device", __func__
);
418 mutex_lock(&ictx
->lock
);
420 if (!ictx
->display_supported
) {
421 err("%s: display not supported by device", __func__
);
423 } else if (!ictx
->display_isopen
) {
424 err("%s: display is not open", __func__
);
427 ictx
->display_isopen
= false;
428 dev_dbg(ictx
->dev
, "display port closed\n");
429 if (!ictx
->dev_present_intf0
) {
431 * Device disconnected before close and IR port is not
432 * open. If IR port is open, context will be deleted by
435 mutex_unlock(&ictx
->lock
);
436 free_imon_context(ictx
);
441 mutex_unlock(&ictx
->lock
);
446 * Sends a packet to the device -- this function must be called
447 * with ictx->lock held.
449 static int send_packet(struct imon_context
*ictx
)
452 unsigned long timeout
;
455 struct usb_ctrlrequest
*control_req
= NULL
;
457 /* Check if we need to use control or interrupt urb */
458 if (!ictx
->tx_control
) {
459 pipe
= usb_sndintpipe(ictx
->usbdev_intf0
,
460 ictx
->tx_endpoint
->bEndpointAddress
);
461 interval
= ictx
->tx_endpoint
->bInterval
;
463 usb_fill_int_urb(ictx
->tx_urb
, ictx
->usbdev_intf0
, pipe
,
465 sizeof(ictx
->usb_tx_buf
),
466 usb_tx_callback
, ictx
, interval
);
468 ictx
->tx_urb
->actual_length
= 0;
470 /* fill request into kmalloc'ed space: */
471 control_req
= kmalloc(sizeof(struct usb_ctrlrequest
),
473 if (control_req
== NULL
)
476 /* setup packet is '21 09 0200 0001 0008' */
477 control_req
->bRequestType
= 0x21;
478 control_req
->bRequest
= 0x09;
479 control_req
->wValue
= cpu_to_le16(0x0200);
480 control_req
->wIndex
= cpu_to_le16(0x0001);
481 control_req
->wLength
= cpu_to_le16(0x0008);
483 /* control pipe is endpoint 0x00 */
484 pipe
= usb_sndctrlpipe(ictx
->usbdev_intf0
, 0);
486 /* build the control urb */
487 usb_fill_control_urb(ictx
->tx_urb
, ictx
->usbdev_intf0
,
488 pipe
, (unsigned char *)control_req
,
490 sizeof(ictx
->usb_tx_buf
),
491 usb_tx_callback
, ictx
);
492 ictx
->tx_urb
->actual_length
= 0;
495 init_completion(&ictx
->tx
.finished
);
496 ictx
->tx
.busy
= true;
497 smp_rmb(); /* ensure later readers know we're busy */
499 retval
= usb_submit_urb(ictx
->tx_urb
, GFP_KERNEL
);
501 ictx
->tx
.busy
= false;
502 smp_rmb(); /* ensure later readers know we're not busy */
503 err("%s: error submitting urb(%d)", __func__
, retval
);
505 /* Wait for transmission to complete (or abort) */
506 mutex_unlock(&ictx
->lock
);
507 retval
= wait_for_completion_interruptible(
510 err("%s: task interrupted", __func__
);
511 mutex_lock(&ictx
->lock
);
513 retval
= ictx
->tx
.status
;
515 err("%s: packet tx failed (%d)", __func__
, retval
);
521 * Induce a mandatory 5ms delay before returning, as otherwise,
522 * send_packet can get called so rapidly as to overwhelm the device,
523 * particularly on faster systems and/or those with quirky usb.
525 timeout
= msecs_to_jiffies(5);
526 set_current_state(TASK_UNINTERRUPTIBLE
);
527 schedule_timeout(timeout
);
533 * Sends an associate packet to the iMON 2.4G.
535 * This might not be such a good idea, since it has an id collision with
536 * some versions of the "IR & VFD" combo. The only way to determine if it
537 * is an RF version is to look at the product description string. (Which
538 * we currently do not fetch).
540 static int send_associate_24g(struct imon_context
*ictx
)
543 const unsigned char packet
[8] = { 0x01, 0x00, 0x00, 0x00,
544 0x00, 0x00, 0x00, 0x20 };
547 err("%s: no context for device", __func__
);
551 if (!ictx
->dev_present_intf0
) {
552 err("%s: no iMON device present", __func__
);
556 memcpy(ictx
->usb_tx_buf
, packet
, sizeof(packet
));
557 retval
= send_packet(ictx
);
563 * Sends packets to setup and show clock on iMON display
565 * Arguments: year - last 2 digits of year, month - 1..12,
566 * day - 1..31, dow - day of the week (0-Sun...6-Sat),
567 * hour - 0..23, minute - 0..59, second - 0..59
569 static int send_set_imon_clock(struct imon_context
*ictx
,
570 unsigned int year
, unsigned int month
,
571 unsigned int day
, unsigned int dow
,
572 unsigned int hour
, unsigned int minute
,
575 unsigned char clock_enable_pkt
[IMON_CLOCK_ENABLE_PACKETS
][8];
580 err("%s: no context for device", __func__
);
584 switch (ictx
->display_type
) {
585 case IMON_DISPLAY_TYPE_LCD
:
586 clock_enable_pkt
[0][0] = 0x80;
587 clock_enable_pkt
[0][1] = year
;
588 clock_enable_pkt
[0][2] = month
-1;
589 clock_enable_pkt
[0][3] = day
;
590 clock_enable_pkt
[0][4] = hour
;
591 clock_enable_pkt
[0][5] = minute
;
592 clock_enable_pkt
[0][6] = second
;
594 clock_enable_pkt
[1][0] = 0x80;
595 clock_enable_pkt
[1][1] = 0;
596 clock_enable_pkt
[1][2] = 0;
597 clock_enable_pkt
[1][3] = 0;
598 clock_enable_pkt
[1][4] = 0;
599 clock_enable_pkt
[1][5] = 0;
600 clock_enable_pkt
[1][6] = 0;
602 if (ictx
->product
== 0xffdc) {
603 clock_enable_pkt
[0][7] = 0x50;
604 clock_enable_pkt
[1][7] = 0x51;
606 clock_enable_pkt
[0][7] = 0x88;
607 clock_enable_pkt
[1][7] = 0x8a;
612 case IMON_DISPLAY_TYPE_VFD
:
613 clock_enable_pkt
[0][0] = year
;
614 clock_enable_pkt
[0][1] = month
-1;
615 clock_enable_pkt
[0][2] = day
;
616 clock_enable_pkt
[0][3] = dow
;
617 clock_enable_pkt
[0][4] = hour
;
618 clock_enable_pkt
[0][5] = minute
;
619 clock_enable_pkt
[0][6] = second
;
620 clock_enable_pkt
[0][7] = 0x40;
622 clock_enable_pkt
[1][0] = 0;
623 clock_enable_pkt
[1][1] = 0;
624 clock_enable_pkt
[1][2] = 1;
625 clock_enable_pkt
[1][3] = 0;
626 clock_enable_pkt
[1][4] = 0;
627 clock_enable_pkt
[1][5] = 0;
628 clock_enable_pkt
[1][6] = 0;
629 clock_enable_pkt
[1][7] = 0x42;
637 for (i
= 0; i
< IMON_CLOCK_ENABLE_PACKETS
; i
++) {
638 memcpy(ictx
->usb_tx_buf
, clock_enable_pkt
[i
], 8);
639 retval
= send_packet(ictx
);
641 err("%s: send_packet failed for packet %d",
651 * These are the sysfs functions to handle the association on the iMON 2.4G LT.
653 static ssize_t
show_associate_remote(struct device
*d
,
654 struct device_attribute
*attr
,
657 struct imon_context
*ictx
= dev_get_drvdata(d
);
662 mutex_lock(&ictx
->lock
);
663 if (ictx
->rf_isassociating
)
664 strcpy(buf
, "associating\n");
666 strcpy(buf
, "closed\n");
668 dev_info(d
, "Visit http://www.lirc.org/html/imon-24g.html for "
669 "instructions on how to associate your iMON 2.4G DT/LT "
671 mutex_unlock(&ictx
->lock
);
675 static ssize_t
store_associate_remote(struct device
*d
,
676 struct device_attribute
*attr
,
677 const char *buf
, size_t count
)
679 struct imon_context
*ictx
;
681 ictx
= dev_get_drvdata(d
);
686 mutex_lock(&ictx
->lock
);
687 ictx
->rf_isassociating
= true;
688 send_associate_24g(ictx
);
689 mutex_unlock(&ictx
->lock
);
695 * sysfs functions to control internal imon clock
697 static ssize_t
show_imon_clock(struct device
*d
,
698 struct device_attribute
*attr
, char *buf
)
700 struct imon_context
*ictx
= dev_get_drvdata(d
);
706 mutex_lock(&ictx
->lock
);
708 if (!ictx
->display_supported
) {
709 len
= snprintf(buf
, PAGE_SIZE
, "Not supported.");
711 len
= snprintf(buf
, PAGE_SIZE
,
712 "To set the clock on your iMON display:\n"
713 "# date \"+%%y %%m %%d %%w %%H %%M %%S\" > imon_clock\n"
714 "%s", ictx
->display_isopen
?
715 "\nNOTE: imon device must be closed\n" : "");
718 mutex_unlock(&ictx
->lock
);
723 static ssize_t
store_imon_clock(struct device
*d
,
724 struct device_attribute
*attr
,
725 const char *buf
, size_t count
)
727 struct imon_context
*ictx
= dev_get_drvdata(d
);
729 unsigned int year
, month
, day
, dow
, hour
, minute
, second
;
734 mutex_lock(&ictx
->lock
);
736 if (!ictx
->display_supported
) {
739 } else if (ictx
->display_isopen
) {
744 if (sscanf(buf
, "%u %u %u %u %u %u %u", &year
, &month
, &day
, &dow
,
745 &hour
, &minute
, &second
) != 7) {
750 if ((month
< 1 || month
> 12) ||
751 (day
< 1 || day
> 31) || (dow
> 6) ||
752 (hour
> 23) || (minute
> 59) || (second
> 59)) {
757 retval
= send_set_imon_clock(ictx
, year
, month
, day
, dow
,
758 hour
, minute
, second
);
764 mutex_unlock(&ictx
->lock
);
770 static DEVICE_ATTR(imon_clock
, S_IWUSR
| S_IRUGO
, show_imon_clock
,
773 static DEVICE_ATTR(associate_remote
, S_IWUSR
| S_IRUGO
, show_associate_remote
,
774 store_associate_remote
);
776 static struct attribute
*imon_display_sysfs_entries
[] = {
777 &dev_attr_imon_clock
.attr
,
781 static struct attribute_group imon_display_attribute_group
= {
782 .attrs
= imon_display_sysfs_entries
785 static struct attribute
*imon_rf_sysfs_entries
[] = {
786 &dev_attr_associate_remote
.attr
,
790 static struct attribute_group imon_rf_attribute_group
= {
791 .attrs
= imon_rf_sysfs_entries
795 * Writes data to the VFD. The iMON VFD is 2x16 characters
796 * and requires data in 5 consecutive USB interrupt packets,
797 * each packet but the last carrying 7 bytes.
799 * I don't know if the VFD board supports features such as
800 * scrolling, clearing rows, blanking, etc. so at
801 * the caller must provide a full screen of data. If fewer
802 * than 32 bytes are provided spaces will be appended to
803 * generate a full screen.
805 static ssize_t
vfd_write(struct file
*file
, const char *buf
,
806 size_t n_bytes
, loff_t
*pos
)
812 struct imon_context
*ictx
;
813 const unsigned char vfd_packet6
[] = {
814 0x01, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF };
816 ictx
= file
->private_data
;
818 err("%s: no context for device", __func__
);
822 mutex_lock(&ictx
->lock
);
824 if (!ictx
->dev_present_intf0
) {
825 err("%s: no iMON device present", __func__
);
830 if (n_bytes
<= 0 || n_bytes
> 32) {
831 err("%s: invalid payload size", __func__
);
836 if (copy_from_user(ictx
->tx
.data_buf
, buf
, n_bytes
)) {
841 /* Pad with spaces */
842 for (i
= n_bytes
; i
< 32; ++i
)
843 ictx
->tx
.data_buf
[i
] = ' ';
845 for (i
= 32; i
< 35; ++i
)
846 ictx
->tx
.data_buf
[i
] = 0xFF;
852 memcpy(ictx
->usb_tx_buf
, ictx
->tx
.data_buf
+ offset
, 7);
853 ictx
->usb_tx_buf
[7] = (unsigned char) seq
;
855 retval
= send_packet(ictx
);
857 err("%s: send packet failed for packet #%d",
865 } while (offset
< 35);
868 memcpy(ictx
->usb_tx_buf
, &vfd_packet6
, sizeof(vfd_packet6
));
869 ictx
->usb_tx_buf
[7] = (unsigned char) seq
;
870 retval
= send_packet(ictx
);
872 err("%s: send packet failed for packet #%d",
876 mutex_unlock(&ictx
->lock
);
878 return (!retval
) ? n_bytes
: retval
;
882 * Writes data to the LCD. The iMON OEM LCD screen expects 8-byte
883 * packets. We accept data as 16 hexadecimal digits, followed by a
884 * newline (to make it easy to drive the device from a command-line
885 * -- even though the actual binary data is a bit complicated).
887 * The device itself is not a "traditional" text-mode display. It's
888 * actually a 16x96 pixel bitmap display. That means if you want to
889 * display text, you've got to have your own "font" and translate the
890 * text into bitmaps for display. This is really flexible (you can
891 * display whatever diacritics you need, and so on), but it's also
892 * a lot more complicated than most LCDs...
894 static ssize_t
lcd_write(struct file
*file
, const char *buf
,
895 size_t n_bytes
, loff_t
*pos
)
898 struct imon_context
*ictx
;
900 ictx
= file
->private_data
;
902 err("%s: no context for device", __func__
);
906 mutex_lock(&ictx
->lock
);
908 if (!ictx
->display_supported
) {
909 err("%s: no iMON display present", __func__
);
915 err("%s: invalid payload size: %d (expecting 8)",
916 __func__
, (int) n_bytes
);
921 if (copy_from_user(ictx
->usb_tx_buf
, buf
, 8)) {
926 retval
= send_packet(ictx
);
928 err("%s: send packet failed!", __func__
);
931 dev_dbg(ictx
->dev
, "%s: write %d bytes to LCD\n",
932 __func__
, (int) n_bytes
);
935 mutex_unlock(&ictx
->lock
);
936 return (!retval
) ? n_bytes
: retval
;
940 * Callback function for USB core API: transmit data
942 static void usb_tx_callback(struct urb
*urb
)
944 struct imon_context
*ictx
;
948 ictx
= (struct imon_context
*)urb
->context
;
952 ictx
->tx
.status
= urb
->status
;
954 /* notify waiters that write has finished */
955 ictx
->tx
.busy
= false;
956 smp_rmb(); /* ensure later readers know we're not busy */
957 complete(&ictx
->tx
.finished
);
961 * mce/rc6 keypresses have no distinct release code, use timer
963 static void imon_mce_timeout(unsigned long data
)
965 struct imon_context
*ictx
= (struct imon_context
*)data
;
967 input_report_key(ictx
->idev
, ictx
->last_keycode
, 0);
968 input_sync(ictx
->idev
);
972 * report touchscreen input
974 static void imon_touch_display_timeout(unsigned long data
)
976 struct imon_context
*ictx
= (struct imon_context
*)data
;
978 if (ictx
->display_type
!= IMON_DISPLAY_TYPE_VGA
)
981 input_report_abs(ictx
->touch
, ABS_X
, ictx
->touch_x
);
982 input_report_abs(ictx
->touch
, ABS_Y
, ictx
->touch_y
);
983 input_report_key(ictx
->touch
, BTN_TOUCH
, 0x00);
984 input_sync(ictx
->touch
);
988 * iMON IR receivers support two different signal sets -- those used by
989 * the iMON remotes, and those used by the Windows MCE remotes (which is
990 * really just RC-6), but only one or the other at a time, as the signals
991 * are decoded onboard the receiver.
993 int imon_ir_change_protocol(void *priv
, u64 ir_type
)
996 struct imon_context
*ictx
= priv
;
997 struct device
*dev
= ictx
->dev
;
999 unsigned char ir_proto_packet
[] = {
1000 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86 };
1002 if (ir_type
&& !(ir_type
& ictx
->props
->allowed_protos
))
1003 dev_warn(dev
, "Looks like you're trying to use an IR protocol "
1004 "this device does not support\n");
1008 dev_dbg(dev
, "Configuring IR receiver for MCE protocol\n");
1009 ir_proto_packet
[0] = 0x01;
1011 init_timer(&ictx
->itimer
);
1012 ictx
->itimer
.data
= (unsigned long)ictx
;
1013 ictx
->itimer
.function
= imon_mce_timeout
;
1015 case IR_TYPE_UNKNOWN
:
1017 dev_dbg(dev
, "Configuring IR receiver for iMON protocol\n");
1021 dev_dbg(dev
, "PAD stabilize functionality disabled\n");
1024 /* ir_proto_packet[0] = 0x00; // already the default */
1025 ir_type
= IR_TYPE_OTHER
;
1028 dev_warn(dev
, "Unsupported IR protocol specified, overriding "
1029 "to iMON IR protocol\n");
1033 dev_dbg(dev
, "PAD stabilize functionality disabled\n");
1036 /* ir_proto_packet[0] = 0x00; // already the default */
1037 ir_type
= IR_TYPE_OTHER
;
1041 memcpy(ictx
->usb_tx_buf
, &ir_proto_packet
, sizeof(ir_proto_packet
));
1043 retval
= send_packet(ictx
);
1047 ictx
->ir_type
= ir_type
;
1048 ictx
->pad_mouse
= pad_mouse
;
1054 static inline int tv2int(const struct timeval
*a
, const struct timeval
*b
)
1059 if (b
->tv_usec
> a
->tv_usec
) {
1064 usecs
+= a
->tv_usec
- b
->tv_usec
;
1066 sec
+= a
->tv_sec
- b
->tv_sec
;
1078 * The directional pad behaves a bit differently, depending on whether this is
1079 * one of the older ffdc devices or a newer device. Newer devices appear to
1080 * have a higher resolution matrix for more precise mouse movement, but it
1081 * makes things overly sensitive in keyboard mode, so we do some interesting
1082 * contortions to make it less touchy. Older devices run through the same
1083 * routine with shorter timeout and a smaller threshold.
1085 static int stabilize(int a
, int b
, u16 timeout
, u16 threshold
)
1088 static struct timeval prev_time
= {0, 0};
1089 static struct timeval hit_time
= {0, 0};
1090 static int x
, y
, prev_result
, hits
;
1094 do_gettimeofday(&ct
);
1095 msec
= tv2int(&ct
, &prev_time
);
1096 msec_hit
= tv2int(&ct
, &hit_time
);
1109 if (abs(x
) > threshold
|| abs(y
) > threshold
) {
1110 if (abs(y
) > abs(x
))
1111 result
= (y
> 0) ? 0x7F : 0x80;
1113 result
= (x
> 0) ? 0x7F00 : 0x8000;
1118 if (result
== prev_result
) {
1124 y
= 17 * threshold
/ 30;
1127 y
-= 17 * threshold
/ 30;
1130 x
= 17 * threshold
/ 30;
1133 x
-= 17 * threshold
/ 30;
1138 if (hits
== 2 && msec_hit
< timeout
) {
1143 prev_result
= result
;
1152 static u32
imon_remote_key_lookup(struct imon_context
*ictx
, u32 hw_code
)
1154 u32 scancode
= be32_to_cpu(hw_code
);
1157 bool is_release_code
= false;
1159 /* Look for the initial press of a button */
1160 keycode
= ir_g_keycode_from_table(ictx
->idev
, scancode
);
1162 /* Look for the release of a button */
1163 if (keycode
== KEY_RESERVED
) {
1164 release
= scancode
& ~0x4000;
1165 keycode
= ir_g_keycode_from_table(ictx
->idev
, release
);
1166 if (keycode
!= KEY_RESERVED
)
1167 is_release_code
= true;
1170 ictx
->release_code
= is_release_code
;
1175 static u32
imon_mce_key_lookup(struct imon_context
*ictx
, u32 hw_code
)
1177 u32 scancode
= be32_to_cpu(hw_code
);
1180 #define MCE_KEY_MASK 0x7000
1181 #define MCE_TOGGLE_BIT 0x8000
1184 * On some receivers, mce keys decode to 0x8000f04xx and 0x8000f84xx
1185 * (the toggle bit flipping between alternating key presses), while
1186 * on other receivers, we see 0x8000f74xx and 0x8000ff4xx. To keep
1187 * the table trim, we always or in the bits to look up 0x8000ff4xx,
1188 * but we can't or them into all codes, as some keys are decoded in
1189 * a different way w/o the same use of the toggle bit...
1191 if ((scancode
>> 24) & 0x80)
1192 scancode
= scancode
| MCE_KEY_MASK
| MCE_TOGGLE_BIT
;
1194 keycode
= ir_g_keycode_from_table(ictx
->idev
, scancode
);
1199 static u32
imon_panel_key_lookup(u64 hw_code
)
1202 u64 code
= be64_to_cpu(hw_code
);
1203 u32 keycode
= KEY_RESERVED
;
1205 for (i
= 0; i
< ARRAY_SIZE(imon_panel_key_table
); i
++) {
1206 if (imon_panel_key_table
[i
].hw_code
== (code
| 0xffee)) {
1207 keycode
= imon_panel_key_table
[i
].keycode
;
1215 static bool imon_mouse_event(struct imon_context
*ictx
,
1216 unsigned char *buf
, int len
)
1218 char rel_x
= 0x00, rel_y
= 0x00;
1220 bool mouse_input
= true;
1223 /* newer iMON device PAD or mouse button */
1224 if (ictx
->product
!= 0xffdc && (buf
[0] & 0x01) && len
== 5) {
1228 /* 0xffdc iMON PAD or mouse button input */
1229 } else if (ictx
->product
== 0xffdc && (buf
[0] & 0x40) &&
1230 !((buf
[1] & 0x01) || ((buf
[1] >> 2) & 0x01))) {
1231 rel_x
= (buf
[1] & 0x08) | (buf
[1] & 0x10) >> 2 |
1232 (buf
[1] & 0x20) >> 4 | (buf
[1] & 0x40) >> 6;
1235 rel_x
= rel_x
+ rel_x
/ 2;
1236 rel_y
= (buf
[2] & 0x08) | (buf
[2] & 0x10) >> 2 |
1237 (buf
[2] & 0x20) >> 4 | (buf
[2] & 0x40) >> 6;
1240 rel_y
= rel_y
+ rel_y
/ 2;
1242 /* some ffdc devices decode mouse buttons differently... */
1243 } else if (ictx
->product
== 0xffdc && (buf
[0] == 0x68)) {
1245 /* ch+/- buttons, which we use for an emulated scroll wheel */
1246 } else if (ictx
->kc
== KEY_CHANNELUP
&& (buf
[2] & 0x40) != 0x40) {
1248 } else if (ictx
->kc
== KEY_CHANNELDOWN
&& (buf
[2] & 0x40) != 0x40) {
1251 mouse_input
= false;
1254 dev_dbg(ictx
->dev
, "sending mouse data via input subsystem\n");
1257 input_report_rel(ictx
->idev
, REL_WHEEL
, dir
);
1258 } else if (rel_x
|| rel_y
) {
1259 input_report_rel(ictx
->idev
, REL_X
, rel_x
);
1260 input_report_rel(ictx
->idev
, REL_Y
, rel_y
);
1262 input_report_key(ictx
->idev
, BTN_LEFT
, buf
[1] & 0x1);
1263 input_report_key(ictx
->idev
, BTN_RIGHT
,
1264 buf
[1] >> right_shift
& 0x1);
1266 input_sync(ictx
->idev
);
1267 ictx
->last_keycode
= ictx
->kc
;
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
;
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
->ir_type
== IR_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 ictx
->kc
= KEY_UNKNOWN
;
1317 buf
[2] = dir
& 0xFF;
1318 buf
[3] = (dir
>> 8) & 0xFF;
1319 memcpy(&temp_key
, buf
, sizeof(temp_key
));
1320 remote_key
= (u32
) (le64_to_cpu(temp_key
)
1322 ictx
->kc
= imon_remote_key_lookup(ictx
,
1326 if (abs(rel_y
) > abs(rel_x
)) {
1327 buf
[2] = (rel_y
> 0) ? 0x7F : 0x80;
1329 ictx
->kc
= (rel_y
> 0) ? KEY_DOWN
: KEY_UP
;
1332 buf
[3] = (rel_x
> 0) ? 0x7F : 0x80;
1333 ictx
->kc
= (rel_x
> 0) ? KEY_RIGHT
: KEY_LEFT
;
1338 * Handle on-board decoded pad events for e.g. older VFD/iMON-Pad
1339 * device (15c2:ffdc). The remote generates various codes from
1340 * 0x68nnnnB7 to 0x6AnnnnB7, the left mouse button generates
1341 * 0x688301b7 and the right one 0x688481b7. All other keys generate
1342 * 0x2nnnnnnn. Position coordinate is encoded in buf[1] and buf[2] with
1343 * reversed endianess. Extract direction from buffer, rotate endianess,
1344 * adjust sign and feed the values into stabilize(). The resulting codes
1345 * will be 0x01008000, 0x01007F00, which match the newer devices.
1348 timeout
= 10; /* in msecs */
1349 /* (2*threshold) x (2*threshold) square */
1350 threshold
= pad_thresh
? pad_thresh
: 15;
1353 rel_x
= (buf
[1] & 0x08) | (buf
[1] & 0x10) >> 2 |
1354 (buf
[1] & 0x20) >> 4 | (buf
[1] & 0x40) >> 6;
1358 rel_y
= (buf
[2] & 0x08) | (buf
[2] & 0x10) >> 2 |
1359 (buf
[2] & 0x20) >> 4 | (buf
[2] & 0x40) >> 6;
1364 buf
[1] = buf
[4] = buf
[5] = buf
[6] = buf
[7] = 0;
1366 if (ictx
->ir_type
== IR_TYPE_OTHER
&& pad_stabilize
) {
1367 dir
= stabilize((int)rel_x
, (int)rel_y
,
1368 timeout
, threshold
);
1370 ictx
->kc
= KEY_UNKNOWN
;
1373 buf
[2] = dir
& 0xFF;
1374 buf
[3] = (dir
>> 8) & 0xFF;
1375 memcpy(&temp_key
, buf
, sizeof(temp_key
));
1376 remote_key
= (u32
) (le64_to_cpu(temp_key
) & 0xffffffff);
1377 ictx
->kc
= imon_remote_key_lookup(ictx
, remote_key
);
1379 if (abs(rel_y
) > abs(rel_x
)) {
1380 buf
[2] = (rel_y
> 0) ? 0x7F : 0x80;
1382 ictx
->kc
= (rel_y
> 0) ? KEY_DOWN
: KEY_UP
;
1385 buf
[3] = (rel_x
> 0) ? 0x7F : 0x80;
1386 ictx
->kc
= (rel_x
> 0) ? KEY_RIGHT
: KEY_LEFT
;
1392 static int imon_parse_press_type(struct imon_context
*ictx
,
1393 unsigned char *buf
, u8 ktype
)
1396 int rep_delay
= ictx
->idev
->rep
[REP_DELAY
];
1397 int rep_period
= ictx
->idev
->rep
[REP_PERIOD
];
1399 /* key release of 0x02XXXXXX key */
1400 if (ictx
->kc
== KEY_RESERVED
&& buf
[0] == 0x02 && buf
[3] == 0x00)
1401 ictx
->kc
= ictx
->last_keycode
;
1403 /* mouse button release on (some) 0xffdc devices */
1404 else if (ictx
->kc
== KEY_RESERVED
&& buf
[0] == 0x68 && buf
[1] == 0x82 &&
1405 buf
[2] == 0x81 && buf
[3] == 0xb7)
1406 ictx
->kc
= ictx
->last_keycode
;
1408 /* mouse button release on (some other) 0xffdc devices */
1409 else if (ictx
->kc
== KEY_RESERVED
&& buf
[0] == 0x01 && buf
[1] == 0x00 &&
1410 buf
[2] == 0x81 && buf
[3] == 0xb7)
1411 ictx
->kc
= ictx
->last_keycode
;
1413 /* mce-specific button handling */
1414 else if (ktype
== IMON_KEY_MCE
) {
1416 if (ictx
->kc
!= ictx
->last_keycode
1417 || buf
[2] != ictx
->mce_toggle_bit
) {
1418 ictx
->last_keycode
= ictx
->kc
;
1419 ictx
->mce_toggle_bit
= buf
[2];
1421 mod_timer(&ictx
->itimer
,
1422 jiffies
+ msecs_to_jiffies(rep_delay
));
1426 mod_timer(&ictx
->itimer
,
1427 jiffies
+ msecs_to_jiffies(rep_period
));
1430 /* incoherent or irrelevant data */
1431 } else if (ictx
->kc
== KEY_RESERVED
)
1432 press_type
= -EINVAL
;
1434 /* key release of 0xXXXXXXb7 key */
1435 else if (ictx
->release_code
)
1438 /* this is a button press */
1446 * Process the incoming packet
1448 static void imon_incoming_packet(struct imon_context
*ictx
,
1449 struct urb
*urb
, int intf
)
1451 int len
= urb
->actual_length
;
1452 unsigned char *buf
= urb
->transfer_buffer
;
1453 struct device
*dev
= ictx
->dev
;
1455 bool norelease
= false;
1460 struct input_dev
*idev
= NULL
;
1464 static struct timeval prev_time
= { 0, 0 };
1465 u8 ktype
= IMON_KEY_IMON
;
1469 /* filter out junk data on the older 0xffdc imon devices */
1470 if ((buf
[0] == 0xff) && (buf
[1] == 0xff) && (buf
[2] == 0xff))
1473 /* Figure out what key was pressed */
1474 memcpy(&temp_key
, buf
, sizeof(temp_key
));
1475 if (len
== 8 && buf
[7] == 0xee) {
1476 ktype
= IMON_KEY_PANEL
;
1477 panel_key
= le64_to_cpu(temp_key
);
1478 kc
= imon_panel_key_lookup(panel_key
);
1480 remote_key
= (u32
) (le64_to_cpu(temp_key
) & 0xffffffff);
1481 if (ictx
->ir_type
== IR_TYPE_RC6
) {
1483 ktype
= IMON_KEY_MCE
;
1484 kc
= imon_mce_key_lookup(ictx
, remote_key
);
1486 kc
= imon_remote_key_lookup(ictx
, remote_key
);
1489 /* keyboard/mouse mode toggle button */
1490 if (kc
== KEY_KEYBOARD
&& !ictx
->release_code
) {
1491 ictx
->last_keycode
= kc
;
1493 ictx
->pad_mouse
= ~(ictx
->pad_mouse
) & 0x1;
1494 dev_dbg(dev
, "toggling to %s mode\n",
1495 ictx
->pad_mouse
? "mouse" : "keyboard");
1498 ictx
->pad_mouse
= 0;
1499 dev_dbg(dev
, "mouse mode disabled, passing key value\n");
1505 /* send touchscreen events through input subsystem if touchpad data */
1506 if (ictx
->display_type
== IMON_DISPLAY_TYPE_VGA
&& len
== 8 &&
1508 imon_touch_event(ictx
, buf
);
1510 /* look for mouse events with pad in mouse mode */
1511 } else if (ictx
->pad_mouse
) {
1512 if (imon_mouse_event(ictx
, buf
, len
))
1516 /* Now for some special handling to convert pad input to arrow keys */
1517 if (((len
== 5) && (buf
[0] == 0x01) && (buf
[4] == 0x00)) ||
1518 ((len
== 8) && (buf
[0] & 0x40) &&
1519 !(buf
[1] & 0x1 || buf
[1] >> 2 & 0x1))) {
1521 imon_pad_to_keys(ictx
, buf
);
1526 printk(KERN_INFO
"intf%d decoded packet: ", intf
);
1527 for (i
= 0; i
< len
; ++i
)
1528 printk("%02x ", buf
[i
]);
1532 press_type
= imon_parse_press_type(ictx
, buf
, ktype
);
1534 goto not_input_data
;
1536 if (ictx
->kc
== KEY_UNKNOWN
)
1539 /* KEY_MUTE repeats from MCE and knob need to be suppressed */
1540 if ((ictx
->kc
== KEY_MUTE
&& ictx
->kc
== ictx
->last_keycode
)
1541 && (buf
[7] == 0xee || ktype
== IMON_KEY_MCE
)) {
1542 do_gettimeofday(&t
);
1543 msec
= tv2int(&t
, &prev_time
);
1545 if (msec
< idev
->rep
[REP_DELAY
])
1549 input_report_key(idev
, ictx
->kc
, press_type
);
1552 /* panel keys and some remote keys don't generate a release */
1553 if (panel_key
|| norelease
) {
1554 input_report_key(idev
, ictx
->kc
, 0);
1558 ictx
->last_keycode
= ictx
->kc
;
1563 dev_info(dev
, "%s: unknown keypress, code 0x%llx\n", __func__
,
1564 (panel_key
? be64_to_cpu(panel_key
) :
1565 be32_to_cpu(remote_key
)));
1570 dev_warn(dev
, "imon %s: invalid incoming packet "
1571 "size (len = %d, intf%d)\n", __func__
, len
, intf
);
1575 /* iMON 2.4G associate frame */
1576 if (buf
[0] == 0x00 &&
1577 buf
[2] == 0xFF && /* REFID */
1580 buf
[5] == 0xFF && /* iMON 2.4G */
1581 ((buf
[6] == 0x4E && buf
[7] == 0xDF) || /* LT */
1582 (buf
[6] == 0x5E && buf
[7] == 0xDF))) { /* DT */
1583 dev_warn(dev
, "%s: remote associated refid=%02X\n",
1585 ictx
->rf_isassociating
= false;
1590 * Callback function for USB core API: receive data
1592 static void usb_rx_callback_intf0(struct urb
*urb
)
1594 struct imon_context
*ictx
;
1600 ictx
= (struct imon_context
*)urb
->context
;
1604 switch (urb
->status
) {
1605 case -ENOENT
: /* usbcore unlink successful! */
1608 case -ESHUTDOWN
: /* transport endpoint was shut down */
1612 imon_incoming_packet(ictx
, urb
, intfnum
);
1616 dev_warn(ictx
->dev
, "imon %s: status(%d): ignored\n",
1617 __func__
, urb
->status
);
1621 usb_submit_urb(ictx
->rx_urb_intf0
, GFP_ATOMIC
);
1624 static void usb_rx_callback_intf1(struct urb
*urb
)
1626 struct imon_context
*ictx
;
1632 ictx
= (struct imon_context
*)urb
->context
;
1636 switch (urb
->status
) {
1637 case -ENOENT
: /* usbcore unlink successful! */
1640 case -ESHUTDOWN
: /* transport endpoint was shut down */
1644 imon_incoming_packet(ictx
, urb
, intfnum
);
1648 dev_warn(ictx
->dev
, "imon %s: status(%d): ignored\n",
1649 __func__
, urb
->status
);
1653 usb_submit_urb(ictx
->rx_urb_intf1
, GFP_ATOMIC
);
1656 static struct input_dev
*imon_init_idev(struct imon_context
*ictx
)
1658 struct input_dev
*idev
;
1659 struct ir_dev_props
*props
;
1662 idev
= input_allocate_device();
1664 dev_err(ictx
->dev
, "remote input dev allocation failed\n");
1665 goto idev_alloc_failed
;
1668 props
= kzalloc(sizeof(struct ir_dev_props
), GFP_KERNEL
);
1670 dev_err(ictx
->dev
, "remote ir dev props allocation failed\n");
1671 goto props_alloc_failed
;
1674 snprintf(ictx
->name_idev
, sizeof(ictx
->name_idev
),
1675 "iMON Remote (%04x:%04x)", ictx
->vendor
, ictx
->product
);
1676 idev
->name
= ictx
->name_idev
;
1678 usb_make_path(ictx
->usbdev_intf0
, ictx
->phys_idev
,
1679 sizeof(ictx
->phys_idev
));
1680 strlcat(ictx
->phys_idev
, "/input0", sizeof(ictx
->phys_idev
));
1681 idev
->phys
= ictx
->phys_idev
;
1683 idev
->evbit
[0] = BIT_MASK(EV_KEY
) | BIT_MASK(EV_REP
) | BIT_MASK(EV_REL
);
1685 idev
->keybit
[BIT_WORD(BTN_MOUSE
)] =
1686 BIT_MASK(BTN_LEFT
) | BIT_MASK(BTN_RIGHT
);
1687 idev
->relbit
[0] = BIT_MASK(REL_X
) | BIT_MASK(REL_Y
) |
1688 BIT_MASK(REL_WHEEL
);
1690 /* panel and/or knob code support */
1691 for (i
= 0; i
< ARRAY_SIZE(imon_panel_key_table
); i
++) {
1692 u32 kc
= imon_panel_key_table
[i
].keycode
;
1693 __set_bit(kc
, idev
->keybit
);
1697 props
->driver_type
= RC_DRIVER_SCANCODE
;
1698 /* IR_TYPE_OTHER maps to iMON PAD remote, IR_TYPE_RC6 to MCE remote */
1699 props
->allowed_protos
= IR_TYPE_OTHER
| IR_TYPE_RC6
;
1700 props
->change_protocol
= imon_ir_change_protocol
;
1701 ictx
->props
= props
;
1703 usb_to_input_id(ictx
->usbdev_intf0
, &idev
->id
);
1704 idev
->dev
.parent
= ictx
->dev
;
1706 ret
= ir_input_register(idev
, RC_MAP_IMON_PAD
, props
, MOD_NAME
);
1708 dev_err(ictx
->dev
, "remote input dev register failed\n");
1709 goto idev_register_failed
;
1714 idev_register_failed
:
1717 input_free_device(idev
);
1723 static struct input_dev
*imon_init_touch(struct imon_context
*ictx
)
1725 struct input_dev
*touch
;
1728 touch
= input_allocate_device();
1730 dev_err(ictx
->dev
, "touchscreen input dev allocation failed\n");
1731 goto touch_alloc_failed
;
1734 snprintf(ictx
->name_touch
, sizeof(ictx
->name_touch
),
1735 "iMON USB Touchscreen (%04x:%04x)",
1736 ictx
->vendor
, ictx
->product
);
1737 touch
->name
= ictx
->name_touch
;
1739 usb_make_path(ictx
->usbdev_intf1
, ictx
->phys_touch
,
1740 sizeof(ictx
->phys_touch
));
1741 strlcat(ictx
->phys_touch
, "/input1", sizeof(ictx
->phys_touch
));
1742 touch
->phys
= ictx
->phys_touch
;
1745 BIT_MASK(EV_KEY
) | BIT_MASK(EV_ABS
);
1746 touch
->keybit
[BIT_WORD(BTN_TOUCH
)] =
1747 BIT_MASK(BTN_TOUCH
);
1748 input_set_abs_params(touch
, ABS_X
,
1750 input_set_abs_params(touch
, ABS_Y
,
1753 input_set_drvdata(touch
, ictx
);
1755 usb_to_input_id(ictx
->usbdev_intf1
, &touch
->id
);
1756 touch
->dev
.parent
= ictx
->dev
;
1757 ret
= input_register_device(touch
);
1759 dev_info(ictx
->dev
, "touchscreen input dev register failed\n");
1760 goto touch_register_failed
;
1765 touch_register_failed
:
1766 input_free_device(ictx
->touch
);
1772 static bool imon_find_endpoints(struct imon_context
*ictx
,
1773 struct usb_host_interface
*iface_desc
)
1775 struct usb_endpoint_descriptor
*ep
;
1776 struct usb_endpoint_descriptor
*rx_endpoint
= NULL
;
1777 struct usb_endpoint_descriptor
*tx_endpoint
= NULL
;
1778 int ifnum
= iface_desc
->desc
.bInterfaceNumber
;
1779 int num_endpts
= iface_desc
->desc
.bNumEndpoints
;
1780 int i
, ep_dir
, ep_type
;
1781 bool ir_ep_found
= false;
1782 bool display_ep_found
= false;
1783 bool tx_control
= false;
1786 * Scan the endpoint list and set:
1787 * first input endpoint = IR endpoint
1788 * first output endpoint = display endpoint
1790 for (i
= 0; i
< num_endpts
&& !(ir_ep_found
&& display_ep_found
); ++i
) {
1791 ep
= &iface_desc
->endpoint
[i
].desc
;
1792 ep_dir
= ep
->bEndpointAddress
& USB_ENDPOINT_DIR_MASK
;
1793 ep_type
= ep
->bmAttributes
& USB_ENDPOINT_XFERTYPE_MASK
;
1795 if (!ir_ep_found
&& ep_dir
== USB_DIR_IN
&&
1796 ep_type
== USB_ENDPOINT_XFER_INT
) {
1800 dev_dbg(ictx
->dev
, "%s: found IR endpoint\n", __func__
);
1802 } else if (!display_ep_found
&& ep_dir
== USB_DIR_OUT
&&
1803 ep_type
== USB_ENDPOINT_XFER_INT
) {
1805 display_ep_found
= true;
1806 dev_dbg(ictx
->dev
, "%s: found display endpoint\n", __func__
);
1811 ictx
->rx_endpoint_intf0
= rx_endpoint
;
1813 * tx is used to send characters to lcd/vfd, associate RF
1814 * remotes, set IR protocol, and maybe more...
1816 ictx
->tx_endpoint
= tx_endpoint
;
1818 ictx
->rx_endpoint_intf1
= rx_endpoint
;
1822 * If we didn't find a display endpoint, this is probably one of the
1823 * newer iMON devices that use control urb instead of interrupt
1825 if (!display_ep_found
) {
1827 display_ep_found
= true;
1828 dev_dbg(ictx
->dev
, "%s: device uses control endpoint, not "
1829 "interface OUT endpoint\n", __func__
);
1833 * Some iMON receivers have no display. Unfortunately, it seems
1834 * that SoundGraph recycles device IDs between devices both with
1837 if (ictx
->display_type
== IMON_DISPLAY_TYPE_NONE
) {
1838 display_ep_found
= false;
1839 dev_dbg(ictx
->dev
, "%s: device has no display\n", __func__
);
1843 * iMON Touch devices have a VGA touchscreen, but no "display", as
1844 * that refers to e.g. /dev/lcd0 (a character device LCD or VFD).
1846 if (ictx
->display_type
== IMON_DISPLAY_TYPE_VGA
) {
1847 display_ep_found
= false;
1848 dev_dbg(ictx
->dev
, "%s: iMON Touch device found\n", __func__
);
1851 /* Input endpoint is mandatory */
1853 err("%s: no valid input (IR) endpoint found.", __func__
);
1855 ictx
->tx_control
= tx_control
;
1857 if (display_ep_found
)
1858 ictx
->display_supported
= true;
1864 static struct imon_context
*imon_init_intf0(struct usb_interface
*intf
)
1866 struct imon_context
*ictx
;
1869 struct device
*dev
= &intf
->dev
;
1870 struct usb_host_interface
*iface_desc
;
1873 ictx
= kzalloc(sizeof(struct imon_context
), GFP_KERNEL
);
1875 dev_err(dev
, "%s: kzalloc failed for context", __func__
);
1878 rx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1880 dev_err(dev
, "%s: usb_alloc_urb failed for IR urb", __func__
);
1881 goto rx_urb_alloc_failed
;
1883 tx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1885 dev_err(dev
, "%s: usb_alloc_urb failed for display urb",
1887 goto tx_urb_alloc_failed
;
1890 mutex_init(&ictx
->lock
);
1892 mutex_lock(&ictx
->lock
);
1895 ictx
->usbdev_intf0
= usb_get_dev(interface_to_usbdev(intf
));
1896 ictx
->dev_present_intf0
= true;
1897 ictx
->rx_urb_intf0
= rx_urb
;
1898 ictx
->tx_urb
= tx_urb
;
1899 ictx
->rf_device
= false;
1901 ictx
->vendor
= le16_to_cpu(ictx
->usbdev_intf0
->descriptor
.idVendor
);
1902 ictx
->product
= le16_to_cpu(ictx
->usbdev_intf0
->descriptor
.idProduct
);
1905 iface_desc
= intf
->cur_altsetting
;
1906 if (!imon_find_endpoints(ictx
, iface_desc
)) {
1907 goto find_endpoint_failed
;
1910 ictx
->idev
= imon_init_idev(ictx
);
1912 dev_err(dev
, "%s: input device setup failed\n", __func__
);
1913 goto idev_setup_failed
;
1916 usb_fill_int_urb(ictx
->rx_urb_intf0
, ictx
->usbdev_intf0
,
1917 usb_rcvintpipe(ictx
->usbdev_intf0
,
1918 ictx
->rx_endpoint_intf0
->bEndpointAddress
),
1919 ictx
->usb_rx_buf
, sizeof(ictx
->usb_rx_buf
),
1920 usb_rx_callback_intf0
, ictx
,
1921 ictx
->rx_endpoint_intf0
->bInterval
);
1923 ret
= usb_submit_urb(ictx
->rx_urb_intf0
, GFP_KERNEL
);
1925 err("%s: usb_submit_urb failed for intf0 (%d)",
1927 goto urb_submit_failed
;
1933 ir_input_unregister(ictx
->idev
);
1935 find_endpoint_failed
:
1936 mutex_unlock(&ictx
->lock
);
1937 usb_free_urb(tx_urb
);
1938 tx_urb_alloc_failed
:
1939 usb_free_urb(rx_urb
);
1940 rx_urb_alloc_failed
:
1943 dev_err(dev
, "unable to initialize intf0, err %d\n", ret
);
1948 static struct imon_context
*imon_init_intf1(struct usb_interface
*intf
,
1949 struct imon_context
*ictx
)
1952 struct usb_host_interface
*iface_desc
;
1955 rx_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1957 err("%s: usb_alloc_urb failed for IR urb", __func__
);
1958 goto rx_urb_alloc_failed
;
1961 mutex_lock(&ictx
->lock
);
1963 if (ictx
->display_type
== IMON_DISPLAY_TYPE_VGA
) {
1964 init_timer(&ictx
->ttimer
);
1965 ictx
->ttimer
.data
= (unsigned long)ictx
;
1966 ictx
->ttimer
.function
= imon_touch_display_timeout
;
1969 ictx
->usbdev_intf1
= usb_get_dev(interface_to_usbdev(intf
));
1970 ictx
->dev_present_intf1
= true;
1971 ictx
->rx_urb_intf1
= rx_urb
;
1974 iface_desc
= intf
->cur_altsetting
;
1975 if (!imon_find_endpoints(ictx
, iface_desc
))
1976 goto find_endpoint_failed
;
1978 if (ictx
->display_type
== IMON_DISPLAY_TYPE_VGA
) {
1979 ictx
->touch
= imon_init_touch(ictx
);
1981 goto touch_setup_failed
;
1985 usb_fill_int_urb(ictx
->rx_urb_intf1
, ictx
->usbdev_intf1
,
1986 usb_rcvintpipe(ictx
->usbdev_intf1
,
1987 ictx
->rx_endpoint_intf1
->bEndpointAddress
),
1988 ictx
->usb_rx_buf
, sizeof(ictx
->usb_rx_buf
),
1989 usb_rx_callback_intf1
, ictx
,
1990 ictx
->rx_endpoint_intf1
->bInterval
);
1992 ret
= usb_submit_urb(ictx
->rx_urb_intf1
, GFP_KERNEL
);
1995 err("%s: usb_submit_urb failed for intf1 (%d)",
1997 goto urb_submit_failed
;
2004 input_unregister_device(ictx
->touch
);
2006 find_endpoint_failed
:
2007 mutex_unlock(&ictx
->lock
);
2008 usb_free_urb(rx_urb
);
2009 rx_urb_alloc_failed
:
2010 dev_err(ictx
->dev
, "unable to initialize intf0, err %d\n", ret
);
2016 * The 0x15c2:0xffdc device ID was used for umpteen different imon
2017 * devices, and all of them constantly spew interrupts, even when there
2018 * is no actual data to report. However, byte 6 of this buffer looks like
2019 * its unique across device variants, so we're trying to key off that to
2020 * figure out which display type (if any) and what IR protocol the device
2021 * actually supports. These devices have their IR protocol hard-coded into
2022 * their firmware, they can't be changed on the fly like the newer hardware.
2024 static void imon_get_ffdc_type(struct imon_context
*ictx
)
2026 u8 ffdc_cfg_byte
= ictx
->usb_rx_buf
[6];
2027 u8 detected_display_type
= IMON_DISPLAY_TYPE_NONE
;
2028 u64 allowed_protos
= IR_TYPE_OTHER
;
2030 switch (ffdc_cfg_byte
) {
2031 /* iMON Knob, no display, iMON IR + vol knob */
2033 dev_info(ictx
->dev
, "0xffdc iMON Knob, iMON IR");
2034 ictx
->display_supported
= false;
2036 /* iMON 2.4G LT (usb stick), no display, iMON RF */
2038 dev_info(ictx
->dev
, "0xffdc iMON 2.4G LT, iMON RF");
2039 ictx
->display_supported
= false;
2040 ictx
->rf_device
= true;
2042 /* iMON VFD, no IR (does have vol knob tho) */
2044 dev_info(ictx
->dev
, "0xffdc iMON VFD + knob, no IR");
2045 detected_display_type
= IMON_DISPLAY_TYPE_VFD
;
2047 /* iMON VFD, iMON IR */
2050 dev_info(ictx
->dev
, "0xffdc iMON VFD, iMON IR");
2051 detected_display_type
= IMON_DISPLAY_TYPE_VFD
;
2053 /* iMON LCD, MCE IR */
2056 dev_info(ictx
->dev
, "0xffdc iMON LCD, MCE IR");
2057 detected_display_type
= IMON_DISPLAY_TYPE_LCD
;
2058 allowed_protos
= IR_TYPE_RC6
;
2061 dev_info(ictx
->dev
, "Unknown 0xffdc device, "
2062 "defaulting to VFD and iMON IR");
2063 detected_display_type
= IMON_DISPLAY_TYPE_VFD
;
2067 printk(KERN_CONT
" (id 0x%02x)\n", ffdc_cfg_byte
);
2069 ictx
->display_type
= detected_display_type
;
2070 ictx
->props
->allowed_protos
= allowed_protos
;
2071 ictx
->ir_type
= allowed_protos
;
2074 static void imon_set_display_type(struct imon_context
*ictx
,
2075 struct usb_interface
*intf
)
2077 u8 configured_display_type
= IMON_DISPLAY_TYPE_VFD
;
2080 * Try to auto-detect the type of display if the user hasn't set
2081 * it by hand via the display_type modparam. Default is VFD.
2084 if (display_type
== IMON_DISPLAY_TYPE_AUTO
) {
2085 switch (ictx
->product
) {
2087 /* set in imon_get_ffdc_type() */
2088 configured_display_type
= ictx
->display_type
;
2092 configured_display_type
= IMON_DISPLAY_TYPE_VGA
;
2097 configured_display_type
= IMON_DISPLAY_TYPE_LCD
;
2103 configured_display_type
= IMON_DISPLAY_TYPE_NONE
;
2104 ictx
->display_supported
= false;
2109 configured_display_type
= IMON_DISPLAY_TYPE_VFD
;
2113 configured_display_type
= display_type
;
2114 if (display_type
== IMON_DISPLAY_TYPE_NONE
)
2115 ictx
->display_supported
= false;
2117 ictx
->display_supported
= true;
2118 dev_info(ictx
->dev
, "%s: overriding display type to %d via "
2119 "modparam\n", __func__
, display_type
);
2122 ictx
->display_type
= configured_display_type
;
2125 static void imon_init_display(struct imon_context
*ictx
,
2126 struct usb_interface
*intf
)
2130 dev_dbg(ictx
->dev
, "Registering iMON display with sysfs\n");
2132 /* set up sysfs entry for built-in clock */
2133 ret
= sysfs_create_group(&intf
->dev
.kobj
,
2134 &imon_display_attribute_group
);
2136 dev_err(ictx
->dev
, "Could not create display sysfs "
2137 "entries(%d)", ret
);
2139 if (ictx
->display_type
== IMON_DISPLAY_TYPE_LCD
)
2140 ret
= usb_register_dev(intf
, &imon_lcd_class
);
2142 ret
= usb_register_dev(intf
, &imon_vfd_class
);
2144 /* Not a fatal error, so ignore */
2145 dev_info(ictx
->dev
, "could not get a minor number for "
2151 * Callback function for USB core API: Probe
2153 static int __devinit
imon_probe(struct usb_interface
*interface
,
2154 const struct usb_device_id
*id
)
2156 struct usb_device
*usbdev
= NULL
;
2157 struct usb_host_interface
*iface_desc
= NULL
;
2158 struct usb_interface
*first_if
;
2159 struct device
*dev
= &interface
->dev
;
2160 int ifnum
, code_length
, sysfs_err
;
2162 struct imon_context
*ictx
= NULL
;
2163 struct imon_context
*first_if_ctx
= NULL
;
2164 u16 vendor
, product
;
2165 const unsigned char fp_packet
[] = { 0x40, 0x00, 0x00, 0x00,
2166 0x00, 0x00, 0x00, 0x88 };
2168 code_length
= BUF_CHUNK_SIZE
* 8;
2170 usbdev
= usb_get_dev(interface_to_usbdev(interface
));
2171 iface_desc
= interface
->cur_altsetting
;
2172 ifnum
= iface_desc
->desc
.bInterfaceNumber
;
2173 vendor
= le16_to_cpu(usbdev
->descriptor
.idVendor
);
2174 product
= le16_to_cpu(usbdev
->descriptor
.idProduct
);
2176 dev_dbg(dev
, "%s: found iMON device (%04x:%04x, intf%d)\n",
2177 __func__
, vendor
, product
, ifnum
);
2179 /* prevent races probing devices w/multiple interfaces */
2180 mutex_lock(&driver_lock
);
2182 first_if
= usb_ifnum_to_if(usbdev
, 0);
2183 first_if_ctx
= (struct imon_context
*)usb_get_intfdata(first_if
);
2186 ictx
= imon_init_intf0(interface
);
2188 err("%s: failed to initialize context!\n", __func__
);
2194 /* this is the secondary interface on the device */
2195 ictx
= imon_init_intf1(interface
, first_if_ctx
);
2197 err("%s: failed to attach to context!\n", __func__
);
2204 usb_set_intfdata(interface
, ictx
);
2207 /* Enable front-panel buttons and/or knobs */
2208 memcpy(ictx
->usb_tx_buf
, &fp_packet
, sizeof(fp_packet
));
2209 ret
= send_packet(ictx
);
2210 /* Not fatal, but warn about it */
2212 dev_info(dev
, "failed to enable panel buttons "
2215 if (product
== 0xffdc)
2216 imon_get_ffdc_type(ictx
);
2218 imon_set_display_type(ictx
, interface
);
2220 if (product
== 0xffdc && ictx
->rf_device
) {
2221 sysfs_err
= sysfs_create_group(&interface
->dev
.kobj
,
2222 &imon_rf_attribute_group
);
2224 err("%s: Could not create RF sysfs entries(%d)",
2225 __func__
, sysfs_err
);
2228 if (ictx
->display_supported
)
2229 imon_init_display(ictx
, interface
);
2232 /* set IR protocol/remote type */
2233 ret
= imon_ir_change_protocol(ictx
, ictx
->ir_type
);
2235 dev_warn(dev
, "%s: failed to set IR protocol, falling back "
2236 "to standard iMON protocol mode\n", __func__
);
2237 ictx
->ir_type
= IR_TYPE_OTHER
;
2240 dev_info(dev
, "iMON device (%04x:%04x, intf%d) on "
2241 "usb<%d:%d> initialized\n", vendor
, product
, ifnum
,
2242 usbdev
->bus
->busnum
, usbdev
->devnum
);
2244 mutex_unlock(&ictx
->lock
);
2245 mutex_unlock(&driver_lock
);
2250 mutex_unlock(&driver_lock
);
2251 dev_err(dev
, "unable to register, err %d\n", ret
);
2257 * Callback function for USB core API: disconnect
2259 static void __devexit
imon_disconnect(struct usb_interface
*interface
)
2261 struct imon_context
*ictx
;
2265 /* prevent races with multi-interface device probing and display_open */
2266 mutex_lock(&driver_lock
);
2268 ictx
= usb_get_intfdata(interface
);
2270 ifnum
= interface
->cur_altsetting
->desc
.bInterfaceNumber
;
2272 mutex_lock(&ictx
->lock
);
2275 * sysfs_remove_group is safe to call even if sysfs_create_group
2276 * hasn't been called
2278 sysfs_remove_group(&interface
->dev
.kobj
,
2279 &imon_display_attribute_group
);
2280 sysfs_remove_group(&interface
->dev
.kobj
,
2281 &imon_rf_attribute_group
);
2283 usb_set_intfdata(interface
, NULL
);
2285 /* Abort ongoing write */
2286 if (ictx
->tx
.busy
) {
2287 usb_kill_urb(ictx
->tx_urb
);
2288 complete_all(&ictx
->tx
.finished
);
2292 ictx
->dev_present_intf0
= false;
2293 usb_kill_urb(ictx
->rx_urb_intf0
);
2294 ir_input_unregister(ictx
->idev
);
2295 if (ictx
->display_supported
) {
2296 if (ictx
->display_type
== IMON_DISPLAY_TYPE_LCD
)
2297 usb_deregister_dev(interface
, &imon_lcd_class
);
2299 usb_deregister_dev(interface
, &imon_vfd_class
);
2302 ictx
->dev_present_intf1
= false;
2303 usb_kill_urb(ictx
->rx_urb_intf1
);
2304 if (ictx
->display_type
== IMON_DISPLAY_TYPE_VGA
)
2305 input_unregister_device(ictx
->touch
);
2308 if (!ictx
->dev_present_intf0
&& !ictx
->dev_present_intf1
) {
2309 if (ictx
->display_type
== IMON_DISPLAY_TYPE_VGA
)
2310 del_timer_sync(&ictx
->ttimer
);
2311 mutex_unlock(&ictx
->lock
);
2312 if (!ictx
->display_isopen
)
2313 free_imon_context(ictx
);
2315 if (ictx
->ir_type
== IR_TYPE_RC6
)
2316 del_timer_sync(&ictx
->itimer
);
2317 mutex_unlock(&ictx
->lock
);
2320 mutex_unlock(&driver_lock
);
2322 dev_dbg(dev
, "%s: iMON device (intf%d) disconnected\n",
2326 static int imon_suspend(struct usb_interface
*intf
, pm_message_t message
)
2328 struct imon_context
*ictx
= usb_get_intfdata(intf
);
2329 int ifnum
= intf
->cur_altsetting
->desc
.bInterfaceNumber
;
2332 usb_kill_urb(ictx
->rx_urb_intf0
);
2334 usb_kill_urb(ictx
->rx_urb_intf1
);
2339 static int imon_resume(struct usb_interface
*intf
)
2342 struct imon_context
*ictx
= usb_get_intfdata(intf
);
2343 int ifnum
= intf
->cur_altsetting
->desc
.bInterfaceNumber
;
2346 usb_fill_int_urb(ictx
->rx_urb_intf0
, ictx
->usbdev_intf0
,
2347 usb_rcvintpipe(ictx
->usbdev_intf0
,
2348 ictx
->rx_endpoint_intf0
->bEndpointAddress
),
2349 ictx
->usb_rx_buf
, sizeof(ictx
->usb_rx_buf
),
2350 usb_rx_callback_intf0
, ictx
,
2351 ictx
->rx_endpoint_intf0
->bInterval
);
2353 rc
= usb_submit_urb(ictx
->rx_urb_intf0
, GFP_ATOMIC
);
2356 usb_fill_int_urb(ictx
->rx_urb_intf1
, ictx
->usbdev_intf1
,
2357 usb_rcvintpipe(ictx
->usbdev_intf1
,
2358 ictx
->rx_endpoint_intf1
->bEndpointAddress
),
2359 ictx
->usb_rx_buf
, sizeof(ictx
->usb_rx_buf
),
2360 usb_rx_callback_intf1
, ictx
,
2361 ictx
->rx_endpoint_intf1
->bInterval
);
2363 rc
= usb_submit_urb(ictx
->rx_urb_intf1
, GFP_ATOMIC
);
2369 static int __init
imon_init(void)
2373 rc
= usb_register(&imon_driver
);
2375 err("%s: usb register failed(%d)", __func__
, rc
);
2382 static void __exit
imon_exit(void)
2384 usb_deregister(&imon_driver
);
2387 module_init(imon_init
);
2388 module_exit(imon_exit
);