2 * Copyright (c) 2000-2001 Vojtech Pavlik
3 * Copyright (c) 2006-2010 Jiri Kosina
5 * HID to Linux Input mapping
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * Should you need to contact me, the author, you can do so either by
24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/kernel.h>
32 #include <linux/hid.h>
33 #include <linux/hid-debug.h>
37 #define unk KEY_UNKNOWN
39 static const unsigned char hid_keyboard
[256] = {
40 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
41 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
42 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
43 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
44 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
45 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
46 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
47 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
48 115,114,unk
,unk
,unk
,121,unk
, 89, 93,124, 92, 94, 95,unk
,unk
,unk
,
49 122,123, 90, 91, 85,unk
,unk
,unk
,unk
,unk
,unk
,unk
,111,unk
,unk
,unk
,
50 unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,
51 unk
,unk
,unk
,unk
,unk
,unk
,179,180,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,
52 unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,
53 unk
,unk
,unk
,unk
,unk
,unk
,unk
,unk
,111,unk
,unk
,unk
,unk
,unk
,unk
,unk
,
54 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
55 150,158,159,128,136,177,178,176,142,152,173,140,unk
,unk
,unk
,unk
61 } hid_hat_to_axis
[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
63 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
64 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
65 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
66 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
68 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
70 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
73 static bool match_scancode(struct hid_usage
*usage
,
74 unsigned int cur_idx
, unsigned int scancode
)
76 return (usage
->hid
& (HID_USAGE_PAGE
| HID_USAGE
)) == scancode
;
79 static bool match_keycode(struct hid_usage
*usage
,
80 unsigned int cur_idx
, unsigned int keycode
)
83 * We should exclude unmapped usages when doing lookup by keycode.
85 return (usage
->type
== EV_KEY
&& usage
->code
== keycode
);
88 static bool match_index(struct hid_usage
*usage
,
89 unsigned int cur_idx
, unsigned int idx
)
91 return cur_idx
== idx
;
94 typedef bool (*hid_usage_cmp_t
)(struct hid_usage
*usage
,
95 unsigned int cur_idx
, unsigned int val
);
97 static struct hid_usage
*hidinput_find_key(struct hid_device
*hid
,
98 hid_usage_cmp_t match
,
100 unsigned int *usage_idx
)
102 unsigned int i
, j
, k
, cur_idx
= 0;
103 struct hid_report
*report
;
104 struct hid_usage
*usage
;
106 for (k
= HID_INPUT_REPORT
; k
<= HID_OUTPUT_REPORT
; k
++) {
107 list_for_each_entry(report
, &hid
->report_enum
[k
].report_list
, list
) {
108 for (i
= 0; i
< report
->maxfield
; i
++) {
109 for (j
= 0; j
< report
->field
[i
]->maxusage
; j
++) {
110 usage
= report
->field
[i
]->usage
+ j
;
111 if (usage
->type
== EV_KEY
|| usage
->type
== 0) {
112 if (match(usage
, cur_idx
, value
)) {
114 *usage_idx
= cur_idx
;
126 static struct hid_usage
*hidinput_locate_usage(struct hid_device
*hid
,
127 const struct input_keymap_entry
*ke
,
130 struct hid_usage
*usage
;
131 unsigned int scancode
;
133 if (ke
->flags
& INPUT_KEYMAP_BY_INDEX
)
134 usage
= hidinput_find_key(hid
, match_index
, ke
->index
, index
);
135 else if (input_scancode_to_scalar(ke
, &scancode
) == 0)
136 usage
= hidinput_find_key(hid
, match_scancode
, scancode
, index
);
143 static int hidinput_getkeycode(struct input_dev
*dev
,
144 struct input_keymap_entry
*ke
)
146 struct hid_device
*hid
= input_get_drvdata(dev
);
147 struct hid_usage
*usage
;
148 unsigned int scancode
, index
;
150 usage
= hidinput_locate_usage(hid
, ke
, &index
);
152 ke
->keycode
= usage
->type
== EV_KEY
?
153 usage
->code
: KEY_RESERVED
;
155 scancode
= usage
->hid
& (HID_USAGE_PAGE
| HID_USAGE
);
156 ke
->len
= sizeof(scancode
);
157 memcpy(ke
->scancode
, &scancode
, sizeof(scancode
));
164 static int hidinput_setkeycode(struct input_dev
*dev
,
165 const struct input_keymap_entry
*ke
,
166 unsigned int *old_keycode
)
168 struct hid_device
*hid
= input_get_drvdata(dev
);
169 struct hid_usage
*usage
;
171 usage
= hidinput_locate_usage(hid
, ke
, NULL
);
173 *old_keycode
= usage
->type
== EV_KEY
?
174 usage
->code
: KEY_RESERVED
;
175 usage
->code
= ke
->keycode
;
177 clear_bit(*old_keycode
, dev
->keybit
);
178 set_bit(usage
->code
, dev
->keybit
);
179 dbg_hid("Assigned keycode %d to HID usage code %x\n",
180 usage
->code
, usage
->hid
);
183 * Set the keybit for the old keycode if the old keycode is used
186 if (hidinput_find_key(hid
, match_keycode
, *old_keycode
, NULL
))
187 set_bit(*old_keycode
, dev
->keybit
);
197 * hidinput_calc_abs_res - calculate an absolute axis resolution
198 * @field: the HID report field to calculate resolution for
202 * (logical_maximum - logical_minimum)
203 * resolution = ----------------------------------------------------------
204 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
206 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
208 * Only exponent 1 length units are processed. Centimeters and inches are
209 * converted to millimeters. Degrees are converted to radians.
211 __s32
hidinput_calc_abs_res(const struct hid_field
*field
, __u16 code
)
213 __s32 unit_exponent
= field
->unit_exponent
;
214 __s32 logical_extents
= field
->logical_maximum
-
215 field
->logical_minimum
;
216 __s32 physical_extents
= field
->physical_maximum
-
217 field
->physical_minimum
;
220 /* Check if the extents are sane */
221 if (logical_extents
<= 0 || physical_extents
<= 0)
225 * Verify and convert units.
226 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
232 case ABS_MT_POSITION_X
:
233 case ABS_MT_POSITION_Y
:
236 case ABS_MT_TOUCH_MAJOR
:
237 case ABS_MT_TOUCH_MINOR
:
238 if (field
->unit
== 0x11) { /* If centimeters */
239 /* Convert to millimeters */
241 } else if (field
->unit
== 0x13) { /* If inches */
242 /* Convert to millimeters */
243 prev
= physical_extents
;
244 physical_extents
*= 254;
245 if (physical_extents
< prev
)
258 if (field
->unit
== 0x14) { /* If degrees */
259 /* Convert to radians */
260 prev
= logical_extents
;
261 logical_extents
*= 573;
262 if (logical_extents
< prev
)
265 } else if (field
->unit
!= 0x12) { /* If not radians */
274 /* Apply negative unit exponent */
275 for (; unit_exponent
< 0; unit_exponent
++) {
276 prev
= logical_extents
;
277 logical_extents
*= 10;
278 if (logical_extents
< prev
)
281 /* Apply positive unit exponent */
282 for (; unit_exponent
> 0; unit_exponent
--) {
283 prev
= physical_extents
;
284 physical_extents
*= 10;
285 if (physical_extents
< prev
)
289 /* Calculate resolution */
290 return DIV_ROUND_CLOSEST(logical_extents
, physical_extents
);
292 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res
);
294 #ifdef CONFIG_HID_BATTERY_STRENGTH
295 static enum power_supply_property hidinput_battery_props
[] = {
296 POWER_SUPPLY_PROP_PRESENT
,
297 POWER_SUPPLY_PROP_ONLINE
,
298 POWER_SUPPLY_PROP_CAPACITY
,
299 POWER_SUPPLY_PROP_MODEL_NAME
,
300 POWER_SUPPLY_PROP_STATUS
,
301 POWER_SUPPLY_PROP_SCOPE
,
304 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
305 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
307 static const struct hid_device_id hid_battery_quirks
[] = {
308 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE
,
309 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO
),
310 HID_BATTERY_QUIRK_PERCENT
| HID_BATTERY_QUIRK_FEATURE
},
311 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE
,
312 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI
),
313 HID_BATTERY_QUIRK_PERCENT
| HID_BATTERY_QUIRK_FEATURE
},
314 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE
,
315 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI
),
316 HID_BATTERY_QUIRK_PERCENT
| HID_BATTERY_QUIRK_FEATURE
},
317 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE
,
318 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO
),
319 HID_BATTERY_QUIRK_PERCENT
| HID_BATTERY_QUIRK_FEATURE
},
320 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE
,
321 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI
),
322 HID_BATTERY_QUIRK_PERCENT
| HID_BATTERY_QUIRK_FEATURE
},
326 static unsigned find_battery_quirk(struct hid_device
*hdev
)
329 const struct hid_device_id
*match
;
331 match
= hid_match_id(hdev
, hid_battery_quirks
);
333 quirks
= match
->driver_data
;
338 static int hidinput_get_battery_property(struct power_supply
*psy
,
339 enum power_supply_property prop
,
340 union power_supply_propval
*val
)
342 struct hid_device
*dev
= power_supply_get_drvdata(psy
);
347 case POWER_SUPPLY_PROP_PRESENT
:
348 case POWER_SUPPLY_PROP_ONLINE
:
352 case POWER_SUPPLY_PROP_CAPACITY
:
354 buf
= kmalloc(2 * sizeof(__u8
), GFP_KERNEL
);
359 ret
= hid_hw_raw_request(dev
, dev
->battery_report_id
, buf
, 2,
360 dev
->battery_report_type
,
370 if (dev
->battery_min
< dev
->battery_max
&&
371 buf
[1] >= dev
->battery_min
&&
372 buf
[1] <= dev
->battery_max
)
373 val
->intval
= (100 * (buf
[1] - dev
->battery_min
)) /
374 (dev
->battery_max
- dev
->battery_min
);
378 case POWER_SUPPLY_PROP_MODEL_NAME
:
379 val
->strval
= dev
->name
;
382 case POWER_SUPPLY_PROP_STATUS
:
383 val
->intval
= POWER_SUPPLY_STATUS_DISCHARGING
;
386 case POWER_SUPPLY_PROP_SCOPE
:
387 val
->intval
= POWER_SUPPLY_SCOPE_DEVICE
;
398 static bool hidinput_setup_battery(struct hid_device
*dev
, unsigned report_type
, struct hid_field
*field
)
400 struct power_supply_desc
*psy_desc
= NULL
;
401 struct power_supply_config psy_cfg
= { .drv_data
= dev
, };
405 if (field
->usage
->hid
!= HID_DC_BATTERYSTRENGTH
)
406 return false; /* no match */
408 if (dev
->battery
!= NULL
)
409 goto out
; /* already initialized? */
411 psy_desc
= kzalloc(sizeof(*psy_desc
), GFP_KERNEL
);
412 if (psy_desc
== NULL
)
415 psy_desc
->name
= kasprintf(GFP_KERNEL
, "hid-%s-battery", dev
->uniq
);
416 if (psy_desc
->name
== NULL
) {
421 psy_desc
->type
= POWER_SUPPLY_TYPE_BATTERY
;
422 psy_desc
->properties
= hidinput_battery_props
;
423 psy_desc
->num_properties
= ARRAY_SIZE(hidinput_battery_props
);
424 psy_desc
->use_for_apm
= 0;
425 psy_desc
->get_property
= hidinput_get_battery_property
;
427 quirks
= find_battery_quirk(dev
);
429 hid_dbg(dev
, "device %x:%x:%x %d quirks %d\n",
430 dev
->bus
, dev
->vendor
, dev
->product
, dev
->version
, quirks
);
432 min
= field
->logical_minimum
;
433 max
= field
->logical_maximum
;
435 if (quirks
& HID_BATTERY_QUIRK_PERCENT
) {
440 if (quirks
& HID_BATTERY_QUIRK_FEATURE
)
441 report_type
= HID_FEATURE_REPORT
;
443 dev
->battery_min
= min
;
444 dev
->battery_max
= max
;
445 dev
->battery_report_type
= report_type
;
446 dev
->battery_report_id
= field
->report
->id
;
448 dev
->battery
= power_supply_register(&dev
->dev
, psy_desc
, &psy_cfg
);
449 if (IS_ERR(dev
->battery
)) {
450 hid_warn(dev
, "can't register power supply: %ld\n",
451 PTR_ERR(dev
->battery
));
452 kfree(psy_desc
->name
);
456 power_supply_powers(dev
->battery
, &dev
->dev
);
463 static void hidinput_cleanup_battery(struct hid_device
*dev
)
468 power_supply_unregister(dev
->battery
);
469 kfree(dev
->battery
->desc
->name
);
470 kfree(dev
->battery
->desc
);
473 #else /* !CONFIG_HID_BATTERY_STRENGTH */
474 static bool hidinput_setup_battery(struct hid_device
*dev
, unsigned report_type
,
475 struct hid_field
*field
)
480 static void hidinput_cleanup_battery(struct hid_device
*dev
)
483 #endif /* CONFIG_HID_BATTERY_STRENGTH */
485 static void hidinput_configure_usage(struct hid_input
*hidinput
, struct hid_field
*field
,
486 struct hid_usage
*usage
)
488 struct input_dev
*input
= hidinput
->input
;
489 struct hid_device
*device
= input_get_drvdata(input
);
491 unsigned long *bit
= NULL
;
493 field
->hidinput
= hidinput
;
495 if (field
->flags
& HID_MAIN_ITEM_CONSTANT
)
498 /* Ignore if report count is out of bounds. */
499 if (field
->report_count
< 1)
502 /* only LED usages are supported in output fields */
503 if (field
->report_type
== HID_OUTPUT_REPORT
&&
504 (usage
->hid
& HID_USAGE_PAGE
) != HID_UP_LED
) {
508 if (device
->driver
->input_mapping
) {
509 int ret
= device
->driver
->input_mapping(device
, hidinput
, field
,
517 switch (usage
->hid
& HID_USAGE_PAGE
) {
518 case HID_UP_UNDEFINED
:
521 case HID_UP_KEYBOARD
:
522 set_bit(EV_REP
, input
->evbit
);
524 if ((usage
->hid
& HID_USAGE
) < 256) {
525 if (!hid_keyboard
[usage
->hid
& HID_USAGE
]) goto ignore
;
526 map_key_clear(hid_keyboard
[usage
->hid
& HID_USAGE
]);
528 map_key(KEY_UNKNOWN
);
533 code
= ((usage
->hid
- 1) & HID_USAGE
);
535 switch (field
->application
) {
537 case HID_GD_POINTER
: code
+= BTN_MOUSE
; break;
538 case HID_GD_JOYSTICK
:
540 code
+= BTN_JOYSTICK
;
542 code
+= BTN_TRIGGER_HAPPY
- 0x10;
548 code
+= BTN_TRIGGER_HAPPY
- 0x10;
551 switch (field
->physical
) {
553 case HID_GD_POINTER
: code
+= BTN_MOUSE
; break;
554 case HID_GD_JOYSTICK
: code
+= BTN_JOYSTICK
; break;
555 case HID_GD_GAMEPAD
: code
+= BTN_GAMEPAD
; break;
556 default: code
+= BTN_MISC
;
563 case HID_UP_SIMULATION
:
564 switch (usage
->hid
& 0xffff) {
565 case 0xba: map_abs(ABS_RUDDER
); break;
566 case 0xbb: map_abs(ABS_THROTTLE
); break;
567 case 0xc4: map_abs(ABS_GAS
); break;
568 case 0xc5: map_abs(ABS_BRAKE
); break;
569 case 0xc8: map_abs(ABS_WHEEL
); break;
570 default: goto ignore
;
575 if ((usage
->hid
& 0xf0) == 0x80) { /* SystemControl */
576 switch (usage
->hid
& 0xf) {
577 case 0x1: map_key_clear(KEY_POWER
); break;
578 case 0x2: map_key_clear(KEY_SLEEP
); break;
579 case 0x3: map_key_clear(KEY_WAKEUP
); break;
580 case 0x4: map_key_clear(KEY_CONTEXT_MENU
); break;
581 case 0x5: map_key_clear(KEY_MENU
); break;
582 case 0x6: map_key_clear(KEY_PROG1
); break;
583 case 0x7: map_key_clear(KEY_HELP
); break;
584 case 0x8: map_key_clear(KEY_EXIT
); break;
585 case 0x9: map_key_clear(KEY_SELECT
); break;
586 case 0xa: map_key_clear(KEY_RIGHT
); break;
587 case 0xb: map_key_clear(KEY_LEFT
); break;
588 case 0xc: map_key_clear(KEY_UP
); break;
589 case 0xd: map_key_clear(KEY_DOWN
); break;
590 case 0xe: map_key_clear(KEY_POWER2
); break;
591 case 0xf: map_key_clear(KEY_RESTART
); break;
592 default: goto unknown
;
597 if ((usage
->hid
& 0xf0) == 0x90) { /* D-pad */
598 switch (usage
->hid
) {
599 case HID_GD_UP
: usage
->hat_dir
= 1; break;
600 case HID_GD_DOWN
: usage
->hat_dir
= 5; break;
601 case HID_GD_RIGHT
: usage
->hat_dir
= 3; break;
602 case HID_GD_LEFT
: usage
->hat_dir
= 7; break;
603 default: goto unknown
;
606 map_abs(field
->dpad
);
613 switch (usage
->hid
) {
614 /* These usage IDs map directly to the usage codes. */
615 case HID_GD_X
: case HID_GD_Y
: case HID_GD_Z
:
616 case HID_GD_RX
: case HID_GD_RY
: case HID_GD_RZ
:
617 if (field
->flags
& HID_MAIN_ITEM_RELATIVE
)
618 map_rel(usage
->hid
& 0xf);
620 map_abs_clear(usage
->hid
& 0xf);
623 case HID_GD_SLIDER
: case HID_GD_DIAL
: case HID_GD_WHEEL
:
624 if (field
->flags
& HID_MAIN_ITEM_RELATIVE
)
625 map_rel(usage
->hid
& 0xf);
627 map_abs(usage
->hid
& 0xf);
630 case HID_GD_HATSWITCH
:
631 usage
->hat_min
= field
->logical_minimum
;
632 usage
->hat_max
= field
->logical_maximum
;
636 case HID_GD_START
: map_key_clear(BTN_START
); break;
637 case HID_GD_SELECT
: map_key_clear(BTN_SELECT
); break;
639 default: goto unknown
;
645 switch (usage
->hid
& 0xffff) { /* HID-Value: */
646 case 0x01: map_led (LED_NUML
); break; /* "Num Lock" */
647 case 0x02: map_led (LED_CAPSL
); break; /* "Caps Lock" */
648 case 0x03: map_led (LED_SCROLLL
); break; /* "Scroll Lock" */
649 case 0x04: map_led (LED_COMPOSE
); break; /* "Compose" */
650 case 0x05: map_led (LED_KANA
); break; /* "Kana" */
651 case 0x27: map_led (LED_SLEEP
); break; /* "Stand-By" */
652 case 0x4c: map_led (LED_SUSPEND
); break; /* "System Suspend" */
653 case 0x09: map_led (LED_MUTE
); break; /* "Mute" */
654 case 0x4b: map_led (LED_MISC
); break; /* "Generic Indicator" */
655 case 0x19: map_led (LED_MAIL
); break; /* "Message Waiting" */
656 case 0x4d: map_led (LED_CHARGING
); break; /* "External Power Connected" */
658 default: goto ignore
;
662 case HID_UP_DIGITIZER
:
663 switch (usage
->hid
& 0xff) {
664 case 0x00: /* Undefined */
667 case 0x30: /* TipPressure */
668 if (!test_bit(BTN_TOUCH
, input
->keybit
)) {
669 device
->quirks
|= HID_QUIRK_NOTOUCH
;
670 set_bit(EV_KEY
, input
->evbit
);
671 set_bit(BTN_TOUCH
, input
->keybit
);
673 map_abs_clear(ABS_PRESSURE
);
676 case 0x32: /* InRange */
677 switch (field
->physical
& 0xff) {
678 case 0x21: map_key(BTN_TOOL_MOUSE
); break;
679 case 0x22: map_key(BTN_TOOL_FINGER
); break;
680 default: map_key(BTN_TOOL_PEN
); break;
684 case 0x3c: /* Invert */
685 map_key_clear(BTN_TOOL_RUBBER
);
688 case 0x3d: /* X Tilt */
689 map_abs_clear(ABS_TILT_X
);
692 case 0x3e: /* Y Tilt */
693 map_abs_clear(ABS_TILT_Y
);
696 case 0x33: /* Touch */
697 case 0x42: /* TipSwitch */
698 case 0x43: /* TipSwitch2 */
699 device
->quirks
&= ~HID_QUIRK_NOTOUCH
;
700 map_key_clear(BTN_TOUCH
);
703 case 0x44: /* BarrelSwitch */
704 map_key_clear(BTN_STYLUS
);
707 case 0x46: /* TabletPick */
708 case 0x5a: /* SecondaryBarrelSwitch */
709 map_key_clear(BTN_STYLUS2
);
712 case 0x5b: /* TransducerSerialNumber */
713 usage
->type
= EV_MSC
;
714 usage
->code
= MSC_SERIAL
;
719 default: goto unknown
;
723 case HID_UP_TELEPHONY
:
724 switch (usage
->hid
& HID_USAGE
) {
725 case 0x2f: map_key_clear(KEY_MICMUTE
); break;
726 case 0xb0: map_key_clear(KEY_NUMERIC_0
); break;
727 case 0xb1: map_key_clear(KEY_NUMERIC_1
); break;
728 case 0xb2: map_key_clear(KEY_NUMERIC_2
); break;
729 case 0xb3: map_key_clear(KEY_NUMERIC_3
); break;
730 case 0xb4: map_key_clear(KEY_NUMERIC_4
); break;
731 case 0xb5: map_key_clear(KEY_NUMERIC_5
); break;
732 case 0xb6: map_key_clear(KEY_NUMERIC_6
); break;
733 case 0xb7: map_key_clear(KEY_NUMERIC_7
); break;
734 case 0xb8: map_key_clear(KEY_NUMERIC_8
); break;
735 case 0xb9: map_key_clear(KEY_NUMERIC_9
); break;
736 case 0xba: map_key_clear(KEY_NUMERIC_STAR
); break;
737 case 0xbb: map_key_clear(KEY_NUMERIC_POUND
); break;
738 case 0xbc: map_key_clear(KEY_NUMERIC_A
); break;
739 case 0xbd: map_key_clear(KEY_NUMERIC_B
); break;
740 case 0xbe: map_key_clear(KEY_NUMERIC_C
); break;
741 case 0xbf: map_key_clear(KEY_NUMERIC_D
); break;
742 default: goto ignore
;
746 case HID_UP_CONSUMER
: /* USB HUT v1.12, pages 75-84 */
747 switch (usage
->hid
& HID_USAGE
) {
748 case 0x000: goto ignore
;
749 case 0x030: map_key_clear(KEY_POWER
); break;
750 case 0x031: map_key_clear(KEY_RESTART
); break;
751 case 0x032: map_key_clear(KEY_SLEEP
); break;
752 case 0x034: map_key_clear(KEY_SLEEP
); break;
753 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE
); break;
754 case 0x036: map_key_clear(BTN_MISC
); break;
756 case 0x040: map_key_clear(KEY_MENU
); break; /* Menu */
757 case 0x041: map_key_clear(KEY_SELECT
); break; /* Menu Pick */
758 case 0x042: map_key_clear(KEY_UP
); break; /* Menu Up */
759 case 0x043: map_key_clear(KEY_DOWN
); break; /* Menu Down */
760 case 0x044: map_key_clear(KEY_LEFT
); break; /* Menu Left */
761 case 0x045: map_key_clear(KEY_RIGHT
); break; /* Menu Right */
762 case 0x046: map_key_clear(KEY_ESC
); break; /* Menu Escape */
763 case 0x047: map_key_clear(KEY_KPPLUS
); break; /* Menu Value Increase */
764 case 0x048: map_key_clear(KEY_KPMINUS
); break; /* Menu Value Decrease */
766 case 0x060: map_key_clear(KEY_INFO
); break; /* Data On Screen */
767 case 0x061: map_key_clear(KEY_SUBTITLE
); break; /* Closed Caption */
768 case 0x063: map_key_clear(KEY_VCR
); break; /* VCR/TV */
769 case 0x065: map_key_clear(KEY_CAMERA
); break; /* Snapshot */
770 case 0x069: map_key_clear(KEY_RED
); break;
771 case 0x06a: map_key_clear(KEY_GREEN
); break;
772 case 0x06b: map_key_clear(KEY_BLUE
); break;
773 case 0x06c: map_key_clear(KEY_YELLOW
); break;
774 case 0x06d: map_key_clear(KEY_ZOOM
); break;
776 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP
); break;
777 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN
); break;
778 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE
); break;
779 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN
); break;
780 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX
); break;
781 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO
); break;
783 case 0x082: map_key_clear(KEY_VIDEO_NEXT
); break;
784 case 0x083: map_key_clear(KEY_LAST
); break;
785 case 0x084: map_key_clear(KEY_ENTER
); break;
786 case 0x088: map_key_clear(KEY_PC
); break;
787 case 0x089: map_key_clear(KEY_TV
); break;
788 case 0x08a: map_key_clear(KEY_WWW
); break;
789 case 0x08b: map_key_clear(KEY_DVD
); break;
790 case 0x08c: map_key_clear(KEY_PHONE
); break;
791 case 0x08d: map_key_clear(KEY_PROGRAM
); break;
792 case 0x08e: map_key_clear(KEY_VIDEOPHONE
); break;
793 case 0x08f: map_key_clear(KEY_GAMES
); break;
794 case 0x090: map_key_clear(KEY_MEMO
); break;
795 case 0x091: map_key_clear(KEY_CD
); break;
796 case 0x092: map_key_clear(KEY_VCR
); break;
797 case 0x093: map_key_clear(KEY_TUNER
); break;
798 case 0x094: map_key_clear(KEY_EXIT
); break;
799 case 0x095: map_key_clear(KEY_HELP
); break;
800 case 0x096: map_key_clear(KEY_TAPE
); break;
801 case 0x097: map_key_clear(KEY_TV2
); break;
802 case 0x098: map_key_clear(KEY_SAT
); break;
803 case 0x09a: map_key_clear(KEY_PVR
); break;
805 case 0x09c: map_key_clear(KEY_CHANNELUP
); break;
806 case 0x09d: map_key_clear(KEY_CHANNELDOWN
); break;
807 case 0x0a0: map_key_clear(KEY_VCR2
); break;
809 case 0x0b0: map_key_clear(KEY_PLAY
); break;
810 case 0x0b1: map_key_clear(KEY_PAUSE
); break;
811 case 0x0b2: map_key_clear(KEY_RECORD
); break;
812 case 0x0b3: map_key_clear(KEY_FASTFORWARD
); break;
813 case 0x0b4: map_key_clear(KEY_REWIND
); break;
814 case 0x0b5: map_key_clear(KEY_NEXTSONG
); break;
815 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG
); break;
816 case 0x0b7: map_key_clear(KEY_STOPCD
); break;
817 case 0x0b8: map_key_clear(KEY_EJECTCD
); break;
818 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT
); break;
819 case 0x0b9: map_key_clear(KEY_SHUFFLE
); break;
820 case 0x0bf: map_key_clear(KEY_SLOW
); break;
822 case 0x0cd: map_key_clear(KEY_PLAYPAUSE
); break;
823 case 0x0cf: map_key_clear(KEY_VOICECOMMAND
); break;
824 case 0x0e0: map_abs_clear(ABS_VOLUME
); break;
825 case 0x0e2: map_key_clear(KEY_MUTE
); break;
826 case 0x0e5: map_key_clear(KEY_BASSBOOST
); break;
827 case 0x0e9: map_key_clear(KEY_VOLUMEUP
); break;
828 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN
); break;
829 case 0x0f5: map_key_clear(KEY_SLOW
); break;
831 case 0x181: map_key_clear(KEY_BUTTONCONFIG
); break;
832 case 0x182: map_key_clear(KEY_BOOKMARKS
); break;
833 case 0x183: map_key_clear(KEY_CONFIG
); break;
834 case 0x184: map_key_clear(KEY_WORDPROCESSOR
); break;
835 case 0x185: map_key_clear(KEY_EDITOR
); break;
836 case 0x186: map_key_clear(KEY_SPREADSHEET
); break;
837 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR
); break;
838 case 0x188: map_key_clear(KEY_PRESENTATION
); break;
839 case 0x189: map_key_clear(KEY_DATABASE
); break;
840 case 0x18a: map_key_clear(KEY_MAIL
); break;
841 case 0x18b: map_key_clear(KEY_NEWS
); break;
842 case 0x18c: map_key_clear(KEY_VOICEMAIL
); break;
843 case 0x18d: map_key_clear(KEY_ADDRESSBOOK
); break;
844 case 0x18e: map_key_clear(KEY_CALENDAR
); break;
845 case 0x18f: map_key_clear(KEY_TASKMANAGER
); break;
846 case 0x190: map_key_clear(KEY_JOURNAL
); break;
847 case 0x191: map_key_clear(KEY_FINANCE
); break;
848 case 0x192: map_key_clear(KEY_CALC
); break;
849 case 0x193: map_key_clear(KEY_PLAYER
); break;
850 case 0x194: map_key_clear(KEY_FILE
); break;
851 case 0x196: map_key_clear(KEY_WWW
); break;
852 case 0x199: map_key_clear(KEY_CHAT
); break;
853 case 0x19c: map_key_clear(KEY_LOGOFF
); break;
854 case 0x19e: map_key_clear(KEY_COFFEE
); break;
855 case 0x19f: map_key_clear(KEY_CONTROLPANEL
); break;
856 case 0x1a2: map_key_clear(KEY_APPSELECT
); break;
857 case 0x1a3: map_key_clear(KEY_NEXT
); break;
858 case 0x1a4: map_key_clear(KEY_PREVIOUS
); break;
859 case 0x1a6: map_key_clear(KEY_HELP
); break;
860 case 0x1a7: map_key_clear(KEY_DOCUMENTS
); break;
861 case 0x1ab: map_key_clear(KEY_SPELLCHECK
); break;
862 case 0x1ae: map_key_clear(KEY_KEYBOARD
); break;
863 case 0x1b1: map_key_clear(KEY_SCREENSAVER
); break;
864 case 0x1b4: map_key_clear(KEY_FILE
); break;
865 case 0x1b6: map_key_clear(KEY_IMAGES
); break;
866 case 0x1b7: map_key_clear(KEY_AUDIO
); break;
867 case 0x1b8: map_key_clear(KEY_VIDEO
); break;
868 case 0x1bc: map_key_clear(KEY_MESSENGER
); break;
869 case 0x1bd: map_key_clear(KEY_INFO
); break;
870 case 0x201: map_key_clear(KEY_NEW
); break;
871 case 0x202: map_key_clear(KEY_OPEN
); break;
872 case 0x203: map_key_clear(KEY_CLOSE
); break;
873 case 0x204: map_key_clear(KEY_EXIT
); break;
874 case 0x207: map_key_clear(KEY_SAVE
); break;
875 case 0x208: map_key_clear(KEY_PRINT
); break;
876 case 0x209: map_key_clear(KEY_PROPS
); break;
877 case 0x21a: map_key_clear(KEY_UNDO
); break;
878 case 0x21b: map_key_clear(KEY_COPY
); break;
879 case 0x21c: map_key_clear(KEY_CUT
); break;
880 case 0x21d: map_key_clear(KEY_PASTE
); break;
881 case 0x21f: map_key_clear(KEY_FIND
); break;
882 case 0x221: map_key_clear(KEY_SEARCH
); break;
883 case 0x222: map_key_clear(KEY_GOTO
); break;
884 case 0x223: map_key_clear(KEY_HOMEPAGE
); break;
885 case 0x224: map_key_clear(KEY_BACK
); break;
886 case 0x225: map_key_clear(KEY_FORWARD
); break;
887 case 0x226: map_key_clear(KEY_STOP
); break;
888 case 0x227: map_key_clear(KEY_REFRESH
); break;
889 case 0x22a: map_key_clear(KEY_BOOKMARKS
); break;
890 case 0x22d: map_key_clear(KEY_ZOOMIN
); break;
891 case 0x22e: map_key_clear(KEY_ZOOMOUT
); break;
892 case 0x22f: map_key_clear(KEY_ZOOMRESET
); break;
893 case 0x233: map_key_clear(KEY_SCROLLUP
); break;
894 case 0x234: map_key_clear(KEY_SCROLLDOWN
); break;
895 case 0x238: map_rel(REL_HWHEEL
); break;
896 case 0x23d: map_key_clear(KEY_EDIT
); break;
897 case 0x25f: map_key_clear(KEY_CANCEL
); break;
898 case 0x269: map_key_clear(KEY_INSERT
); break;
899 case 0x26a: map_key_clear(KEY_DELETE
); break;
900 case 0x279: map_key_clear(KEY_REDO
); break;
902 case 0x289: map_key_clear(KEY_REPLY
); break;
903 case 0x28b: map_key_clear(KEY_FORWARDMAIL
); break;
904 case 0x28c: map_key_clear(KEY_SEND
); break;
906 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV
); break;
907 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT
); break;
908 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP
); break;
909 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP
); break;
910 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT
); break;
911 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL
); break;
913 default: map_key_clear(KEY_UNKNOWN
);
917 case HID_UP_GENDEVCTRLS
:
918 if (hidinput_setup_battery(device
, HID_INPUT_REPORT
, field
))
924 case HID_UP_HPVENDOR
: /* Reported on a Dutch layout HP5308 */
925 set_bit(EV_REP
, input
->evbit
);
926 switch (usage
->hid
& HID_USAGE
) {
927 case 0x021: map_key_clear(KEY_PRINT
); break;
928 case 0x070: map_key_clear(KEY_HP
); break;
929 case 0x071: map_key_clear(KEY_CAMERA
); break;
930 case 0x072: map_key_clear(KEY_SOUND
); break;
931 case 0x073: map_key_clear(KEY_QUESTION
); break;
932 case 0x080: map_key_clear(KEY_EMAIL
); break;
933 case 0x081: map_key_clear(KEY_CHAT
); break;
934 case 0x082: map_key_clear(KEY_SEARCH
); break;
935 case 0x083: map_key_clear(KEY_CONNECT
); break;
936 case 0x084: map_key_clear(KEY_FINANCE
); break;
937 case 0x085: map_key_clear(KEY_SPORT
); break;
938 case 0x086: map_key_clear(KEY_SHOP
); break;
939 default: goto ignore
;
943 case HID_UP_HPVENDOR2
:
944 set_bit(EV_REP
, input
->evbit
);
945 switch (usage
->hid
& HID_USAGE
) {
946 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN
); break;
947 case 0x004: map_key_clear(KEY_BRIGHTNESSUP
); break;
948 default: goto ignore
;
952 case HID_UP_MSVENDOR
:
955 case HID_UP_CUSTOM
: /* Reported on Logitech and Apple USB keyboards */
956 set_bit(EV_REP
, input
->evbit
);
959 case HID_UP_LOGIVENDOR
:
963 switch (usage
->hid
& HID_USAGE
) {
964 case 0xa4: map_key_clear(BTN_DEAD
); break;
965 default: goto ignore
;
971 if (field
->report_size
== 1) {
972 if (field
->report
->type
== HID_OUTPUT_REPORT
) {
979 if (field
->flags
& HID_MAIN_ITEM_RELATIVE
) {
988 if (device
->driver
->input_mapped
&& device
->driver
->input_mapped(device
,
989 hidinput
, field
, usage
, &bit
, &max
) < 0)
992 set_bit(usage
->type
, input
->evbit
);
994 while (usage
->code
<= max
&& test_and_set_bit(usage
->code
, bit
))
995 usage
->code
= find_next_zero_bit(bit
, max
+ 1, usage
->code
);
997 if (usage
->code
> max
)
1001 if (usage
->type
== EV_ABS
) {
1003 int a
= field
->logical_minimum
;
1004 int b
= field
->logical_maximum
;
1006 if ((device
->quirks
& HID_QUIRK_BADPAD
) && (usage
->code
== ABS_X
|| usage
->code
== ABS_Y
)) {
1007 a
= field
->logical_minimum
= 0;
1008 b
= field
->logical_maximum
= 255;
1011 if (field
->application
== HID_GD_GAMEPAD
|| field
->application
== HID_GD_JOYSTICK
)
1012 input_set_abs_params(input
, usage
->code
, a
, b
, (b
- a
) >> 8, (b
- a
) >> 4);
1013 else input_set_abs_params(input
, usage
->code
, a
, b
, 0, 0);
1015 input_abs_set_res(input
, usage
->code
,
1016 hidinput_calc_abs_res(field
, usage
->code
));
1018 /* use a larger default input buffer for MT devices */
1019 if (usage
->code
== ABS_MT_POSITION_X
&& input
->hint_events_per_packet
== 0)
1020 input_set_events_per_packet(input
, 60);
1023 if (usage
->type
== EV_ABS
&&
1024 (usage
->hat_min
< usage
->hat_max
|| usage
->hat_dir
)) {
1026 for (i
= usage
->code
; i
< usage
->code
+ 2 && i
<= max
; i
++) {
1027 input_set_abs_params(input
, i
, -1, 1, 0, 0);
1028 set_bit(i
, input
->absbit
);
1030 if (usage
->hat_dir
&& !field
->dpad
)
1031 field
->dpad
= usage
->code
;
1034 /* for those devices which produce Consumer volume usage as relative,
1035 * we emulate pressing volumeup/volumedown appropriate number of times
1036 * in hidinput_hid_event()
1038 if ((usage
->type
== EV_ABS
) && (field
->flags
& HID_MAIN_ITEM_RELATIVE
) &&
1039 (usage
->code
== ABS_VOLUME
)) {
1040 set_bit(KEY_VOLUMEUP
, input
->keybit
);
1041 set_bit(KEY_VOLUMEDOWN
, input
->keybit
);
1044 if (usage
->type
== EV_KEY
) {
1045 set_bit(EV_MSC
, input
->evbit
);
1046 set_bit(MSC_SCAN
, input
->mscbit
);
1054 void hidinput_hid_event(struct hid_device
*hid
, struct hid_field
*field
, struct hid_usage
*usage
, __s32 value
)
1056 struct input_dev
*input
;
1057 unsigned *quirks
= &hid
->quirks
;
1059 if (!field
->hidinput
)
1062 input
= field
->hidinput
->input
;
1067 if (usage
->hat_min
< usage
->hat_max
|| usage
->hat_dir
) {
1068 int hat_dir
= usage
->hat_dir
;
1070 hat_dir
= (value
- usage
->hat_min
) * 8 / (usage
->hat_max
- usage
->hat_min
+ 1) + 1;
1071 if (hat_dir
< 0 || hat_dir
> 8) hat_dir
= 0;
1072 input_event(input
, usage
->type
, usage
->code
, hid_hat_to_axis
[hat_dir
].x
);
1073 input_event(input
, usage
->type
, usage
->code
+ 1, hid_hat_to_axis
[hat_dir
].y
);
1077 if (usage
->hid
== (HID_UP_DIGITIZER
| 0x003c)) { /* Invert */
1078 *quirks
= value
? (*quirks
| HID_QUIRK_INVERT
) : (*quirks
& ~HID_QUIRK_INVERT
);
1082 if (usage
->hid
== (HID_UP_DIGITIZER
| 0x0032)) { /* InRange */
1084 input_event(input
, usage
->type
, (*quirks
& HID_QUIRK_INVERT
) ? BTN_TOOL_RUBBER
: usage
->code
, 1);
1087 input_event(input
, usage
->type
, usage
->code
, 0);
1088 input_event(input
, usage
->type
, BTN_TOOL_RUBBER
, 0);
1092 if (usage
->hid
== (HID_UP_DIGITIZER
| 0x0030) && (*quirks
& HID_QUIRK_NOTOUCH
)) { /* Pressure */
1093 int a
= field
->logical_minimum
;
1094 int b
= field
->logical_maximum
;
1095 input_event(input
, EV_KEY
, BTN_TOUCH
, value
> a
+ ((b
- a
) >> 3));
1098 if (usage
->hid
== (HID_UP_PID
| 0x83UL
)) { /* Simultaneous Effects Max */
1099 dbg_hid("Maximum Effects - %d\n",value
);
1103 if (usage
->hid
== (HID_UP_PID
| 0x7fUL
)) {
1104 dbg_hid("PID Pool Report\n");
1108 if ((usage
->type
== EV_KEY
) && (usage
->code
== 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1111 if ((usage
->type
== EV_ABS
) && (field
->flags
& HID_MAIN_ITEM_RELATIVE
) &&
1112 (usage
->code
== ABS_VOLUME
)) {
1113 int count
= abs(value
);
1114 int direction
= value
> 0 ? KEY_VOLUMEUP
: KEY_VOLUMEDOWN
;
1117 for (i
= 0; i
< count
; i
++) {
1118 input_event(input
, EV_KEY
, direction
, 1);
1120 input_event(input
, EV_KEY
, direction
, 0);
1127 * Ignore out-of-range values as per HID specification,
1128 * section 5.10 and 6.2.25.
1130 * The logical_minimum < logical_maximum check is done so that we
1131 * don't unintentionally discard values sent by devices which
1132 * don't specify logical min and max.
1134 if ((field
->flags
& HID_MAIN_ITEM_VARIABLE
) &&
1135 (field
->logical_minimum
< field
->logical_maximum
) &&
1136 (value
< field
->logical_minimum
||
1137 value
> field
->logical_maximum
)) {
1138 dbg_hid("Ignoring out-of-range value %x\n", value
);
1143 * Ignore reports for absolute data if the data didn't change. This is
1144 * not only an optimization but also fixes 'dead' key reports. Some
1145 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1146 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1147 * can only have one of them physically available. The 'dead' keys
1148 * report constant 0. As all map to the same keycode, they'd confuse
1149 * the input layer. If we filter the 'dead' keys on the HID level, we
1150 * skip the keycode translation and only forward real events.
1152 if (!(field
->flags
& (HID_MAIN_ITEM_RELATIVE
|
1153 HID_MAIN_ITEM_BUFFERED_BYTE
)) &&
1154 (field
->flags
& HID_MAIN_ITEM_VARIABLE
) &&
1155 usage
->usage_index
< field
->maxusage
&&
1156 value
== field
->value
[usage
->usage_index
])
1159 /* report the usage code as scancode if the key status has changed */
1160 if (usage
->type
== EV_KEY
&& !!test_bit(usage
->code
, input
->key
) != value
)
1161 input_event(input
, EV_MSC
, MSC_SCAN
, usage
->hid
);
1163 input_event(input
, usage
->type
, usage
->code
, value
);
1165 if ((field
->flags
& HID_MAIN_ITEM_RELATIVE
) && (usage
->type
== EV_KEY
))
1166 input_event(input
, usage
->type
, usage
->code
, 0);
1169 void hidinput_report_event(struct hid_device
*hid
, struct hid_report
*report
)
1171 struct hid_input
*hidinput
;
1173 if (hid
->quirks
& HID_QUIRK_NO_INPUT_SYNC
)
1176 list_for_each_entry(hidinput
, &hid
->inputs
, list
)
1177 input_sync(hidinput
->input
);
1179 EXPORT_SYMBOL_GPL(hidinput_report_event
);
1181 int hidinput_find_field(struct hid_device
*hid
, unsigned int type
, unsigned int code
, struct hid_field
**field
)
1183 struct hid_report
*report
;
1186 list_for_each_entry(report
, &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
, list
) {
1187 for (i
= 0; i
< report
->maxfield
; i
++) {
1188 *field
= report
->field
[i
];
1189 for (j
= 0; j
< (*field
)->maxusage
; j
++)
1190 if ((*field
)->usage
[j
].type
== type
&& (*field
)->usage
[j
].code
== code
)
1196 EXPORT_SYMBOL_GPL(hidinput_find_field
);
1198 struct hid_field
*hidinput_get_led_field(struct hid_device
*hid
)
1200 struct hid_report
*report
;
1201 struct hid_field
*field
;
1204 list_for_each_entry(report
,
1205 &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
,
1207 for (i
= 0; i
< report
->maxfield
; i
++) {
1208 field
= report
->field
[i
];
1209 for (j
= 0; j
< field
->maxusage
; j
++)
1210 if (field
->usage
[j
].type
== EV_LED
)
1216 EXPORT_SYMBOL_GPL(hidinput_get_led_field
);
1218 unsigned int hidinput_count_leds(struct hid_device
*hid
)
1220 struct hid_report
*report
;
1221 struct hid_field
*field
;
1223 unsigned int count
= 0;
1225 list_for_each_entry(report
,
1226 &hid
->report_enum
[HID_OUTPUT_REPORT
].report_list
,
1228 for (i
= 0; i
< report
->maxfield
; i
++) {
1229 field
= report
->field
[i
];
1230 for (j
= 0; j
< field
->maxusage
; j
++)
1231 if (field
->usage
[j
].type
== EV_LED
&&
1238 EXPORT_SYMBOL_GPL(hidinput_count_leds
);
1240 static void hidinput_led_worker(struct work_struct
*work
)
1242 struct hid_device
*hid
= container_of(work
, struct hid_device
,
1244 struct hid_field
*field
;
1245 struct hid_report
*report
;
1249 field
= hidinput_get_led_field(hid
);
1254 * field->report is accessed unlocked regarding HID core. So there might
1255 * be another incoming SET-LED request from user-space, which changes
1256 * the LED state while we assemble our outgoing buffer. However, this
1257 * doesn't matter as hid_output_report() correctly converts it into a
1258 * boolean value no matter what information is currently set on the LED
1259 * field (even garbage). So the remote device will always get a valid
1261 * And in case we send a wrong value, a next led worker is spawned
1262 * for every SET-LED request so the following worker will send the
1263 * correct value, guaranteed!
1266 report
= field
->report
;
1268 /* use custom SET_REPORT request if possible (asynchronous) */
1269 if (hid
->ll_driver
->request
)
1270 return hid
->ll_driver
->request(hid
, report
, HID_REQ_SET_REPORT
);
1272 /* fall back to generic raw-output-report */
1273 len
= hid_report_len(report
);
1274 buf
= hid_alloc_report_buf(report
, GFP_KERNEL
);
1278 hid_output_report(report
, buf
);
1279 /* synchronous output report */
1280 ret
= hid_hw_output_report(hid
, buf
, len
);
1282 hid_hw_raw_request(hid
, report
->id
, buf
, len
, HID_OUTPUT_REPORT
,
1283 HID_REQ_SET_REPORT
);
1287 static int hidinput_input_event(struct input_dev
*dev
, unsigned int type
,
1288 unsigned int code
, int value
)
1290 struct hid_device
*hid
= input_get_drvdata(dev
);
1291 struct hid_field
*field
;
1295 return input_ff_event(dev
, type
, code
, value
);
1300 if ((offset
= hidinput_find_field(hid
, type
, code
, &field
)) == -1) {
1301 hid_warn(dev
, "event field not found\n");
1305 hid_set_field(field
, offset
, value
);
1307 schedule_work(&hid
->led_work
);
1311 static int hidinput_open(struct input_dev
*dev
)
1313 struct hid_device
*hid
= input_get_drvdata(dev
);
1315 return hid_hw_open(hid
);
1318 static void hidinput_close(struct input_dev
*dev
)
1320 struct hid_device
*hid
= input_get_drvdata(dev
);
1325 static void report_features(struct hid_device
*hid
)
1327 struct hid_driver
*drv
= hid
->driver
;
1328 struct hid_report_enum
*rep_enum
;
1329 struct hid_report
*rep
;
1332 rep_enum
= &hid
->report_enum
[HID_FEATURE_REPORT
];
1333 list_for_each_entry(rep
, &rep_enum
->report_list
, list
)
1334 for (i
= 0; i
< rep
->maxfield
; i
++) {
1335 /* Ignore if report count is out of bounds. */
1336 if (rep
->field
[i
]->report_count
< 1)
1339 for (j
= 0; j
< rep
->field
[i
]->maxusage
; j
++) {
1340 /* Verify if Battery Strength feature is available */
1341 hidinput_setup_battery(hid
, HID_FEATURE_REPORT
, rep
->field
[i
]);
1343 if (drv
->feature_mapping
)
1344 drv
->feature_mapping(hid
, rep
->field
[i
],
1345 rep
->field
[i
]->usage
+ j
);
1350 static struct hid_input
*hidinput_allocate(struct hid_device
*hid
)
1352 struct hid_input
*hidinput
= kzalloc(sizeof(*hidinput
), GFP_KERNEL
);
1353 struct input_dev
*input_dev
= input_allocate_device();
1354 if (!hidinput
|| !input_dev
) {
1356 input_free_device(input_dev
);
1357 hid_err(hid
, "Out of memory during hid input probe\n");
1361 input_set_drvdata(input_dev
, hid
);
1362 input_dev
->event
= hidinput_input_event
;
1363 input_dev
->open
= hidinput_open
;
1364 input_dev
->close
= hidinput_close
;
1365 input_dev
->setkeycode
= hidinput_setkeycode
;
1366 input_dev
->getkeycode
= hidinput_getkeycode
;
1368 input_dev
->name
= hid
->name
;
1369 input_dev
->phys
= hid
->phys
;
1370 input_dev
->uniq
= hid
->uniq
;
1371 input_dev
->id
.bustype
= hid
->bus
;
1372 input_dev
->id
.vendor
= hid
->vendor
;
1373 input_dev
->id
.product
= hid
->product
;
1374 input_dev
->id
.version
= hid
->version
;
1375 input_dev
->dev
.parent
= &hid
->dev
;
1376 hidinput
->input
= input_dev
;
1377 list_add_tail(&hidinput
->list
, &hid
->inputs
);
1382 static bool hidinput_has_been_populated(struct hid_input
*hidinput
)
1385 unsigned long r
= 0;
1387 for (i
= 0; i
< BITS_TO_LONGS(EV_CNT
); i
++)
1388 r
|= hidinput
->input
->evbit
[i
];
1390 for (i
= 0; i
< BITS_TO_LONGS(KEY_CNT
); i
++)
1391 r
|= hidinput
->input
->keybit
[i
];
1393 for (i
= 0; i
< BITS_TO_LONGS(REL_CNT
); i
++)
1394 r
|= hidinput
->input
->relbit
[i
];
1396 for (i
= 0; i
< BITS_TO_LONGS(ABS_CNT
); i
++)
1397 r
|= hidinput
->input
->absbit
[i
];
1399 for (i
= 0; i
< BITS_TO_LONGS(MSC_CNT
); i
++)
1400 r
|= hidinput
->input
->mscbit
[i
];
1402 for (i
= 0; i
< BITS_TO_LONGS(LED_CNT
); i
++)
1403 r
|= hidinput
->input
->ledbit
[i
];
1405 for (i
= 0; i
< BITS_TO_LONGS(SND_CNT
); i
++)
1406 r
|= hidinput
->input
->sndbit
[i
];
1408 for (i
= 0; i
< BITS_TO_LONGS(FF_CNT
); i
++)
1409 r
|= hidinput
->input
->ffbit
[i
];
1411 for (i
= 0; i
< BITS_TO_LONGS(SW_CNT
); i
++)
1412 r
|= hidinput
->input
->swbit
[i
];
1417 static void hidinput_cleanup_hidinput(struct hid_device
*hid
,
1418 struct hid_input
*hidinput
)
1420 struct hid_report
*report
;
1423 list_del(&hidinput
->list
);
1424 input_free_device(hidinput
->input
);
1426 for (k
= HID_INPUT_REPORT
; k
<= HID_OUTPUT_REPORT
; k
++) {
1427 if (k
== HID_OUTPUT_REPORT
&&
1428 hid
->quirks
& HID_QUIRK_SKIP_OUTPUT_REPORTS
)
1431 list_for_each_entry(report
, &hid
->report_enum
[k
].report_list
,
1434 for (i
= 0; i
< report
->maxfield
; i
++)
1435 if (report
->field
[i
]->hidinput
== hidinput
)
1436 report
->field
[i
]->hidinput
= NULL
;
1444 * Register the input device; print a message.
1445 * Configure the input layer interface
1446 * Read all reports and initialize the absolute field values.
1449 int hidinput_connect(struct hid_device
*hid
, unsigned int force
)
1451 struct hid_driver
*drv
= hid
->driver
;
1452 struct hid_report
*report
;
1453 struct hid_input
*hidinput
= NULL
;
1456 INIT_LIST_HEAD(&hid
->inputs
);
1457 INIT_WORK(&hid
->led_work
, hidinput_led_worker
);
1460 for (i
= 0; i
< hid
->maxcollection
; i
++) {
1461 struct hid_collection
*col
= &hid
->collection
[i
];
1462 if (col
->type
== HID_COLLECTION_APPLICATION
||
1463 col
->type
== HID_COLLECTION_PHYSICAL
)
1464 if (IS_INPUT_APPLICATION(col
->usage
))
1468 if (i
== hid
->maxcollection
)
1472 report_features(hid
);
1474 for (k
= HID_INPUT_REPORT
; k
<= HID_OUTPUT_REPORT
; k
++) {
1475 if (k
== HID_OUTPUT_REPORT
&&
1476 hid
->quirks
& HID_QUIRK_SKIP_OUTPUT_REPORTS
)
1479 list_for_each_entry(report
, &hid
->report_enum
[k
].report_list
, list
) {
1481 if (!report
->maxfield
)
1485 hidinput
= hidinput_allocate(hid
);
1490 for (i
= 0; i
< report
->maxfield
; i
++)
1491 for (j
= 0; j
< report
->field
[i
]->maxusage
; j
++)
1492 hidinput_configure_usage(hidinput
, report
->field
[i
],
1493 report
->field
[i
]->usage
+ j
);
1495 if ((hid
->quirks
& HID_QUIRK_NO_EMPTY_INPUT
) &&
1496 !hidinput_has_been_populated(hidinput
))
1499 if (hid
->quirks
& HID_QUIRK_MULTI_INPUT
) {
1500 /* This will leave hidinput NULL, so that it
1501 * allocates another one if we have more inputs on
1502 * the same interface. Some devices (e.g. Happ's
1503 * UGCI) cram a lot of unrelated inputs into the
1504 * same interface. */
1505 hidinput
->report
= report
;
1506 if (drv
->input_configured
)
1507 drv
->input_configured(hid
, hidinput
);
1508 if (input_register_device(hidinput
->input
))
1515 if (hidinput
&& (hid
->quirks
& HID_QUIRK_NO_EMPTY_INPUT
) &&
1516 !hidinput_has_been_populated(hidinput
)) {
1517 /* no need to register an input device not populated */
1518 hidinput_cleanup_hidinput(hid
, hidinput
);
1522 if (list_empty(&hid
->inputs
)) {
1523 hid_err(hid
, "No inputs registered, leaving\n");
1528 if (drv
->input_configured
)
1529 drv
->input_configured(hid
, hidinput
);
1530 if (input_register_device(hidinput
->input
))
1537 list_del(&hidinput
->list
);
1538 input_free_device(hidinput
->input
);
1541 /* unwind the ones we already registered */
1542 hidinput_disconnect(hid
);
1546 EXPORT_SYMBOL_GPL(hidinput_connect
);
1548 void hidinput_disconnect(struct hid_device
*hid
)
1550 struct hid_input
*hidinput
, *next
;
1552 hidinput_cleanup_battery(hid
);
1554 list_for_each_entry_safe(hidinput
, next
, &hid
->inputs
, list
) {
1555 list_del(&hidinput
->list
);
1556 input_unregister_device(hidinput
->input
);
1560 /* led_work is spawned by input_dev callbacks, but doesn't access the
1561 * parent input_dev at all. Once all input devices are removed, we
1562 * know that led_work will never get restarted, so we can cancel it
1563 * synchronously and are safe. */
1564 cancel_work_sync(&hid
->led_work
);
1566 EXPORT_SYMBOL_GPL(hidinput_disconnect
);