2 * HIDPP protocol for Logitech Unifying receivers
4 * Copyright (c) 2011 Logitech (c)
5 * Copyright (c) 2012-2013 Google (c)
6 * Copyright (c) 2013-2014 Red Hat Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the Free
12 * Software Foundation; version 2 of the License.
15 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
17 #include <linux/device.h>
18 #include <linux/hid.h>
19 #include <linux/module.h>
20 #include <linux/slab.h>
21 #include <linux/sched.h>
22 #include <linux/kfifo.h>
23 #include <linux/input/mt.h>
24 #include <asm/unaligned.h>
27 MODULE_LICENSE("GPL");
28 MODULE_AUTHOR("Benjamin Tissoires <benjamin.tissoires@gmail.com>");
29 MODULE_AUTHOR("Nestor Lopez Casado <nlopezcasad@logitech.com>");
31 static bool disable_raw_mode
;
32 module_param(disable_raw_mode
, bool, 0644);
33 MODULE_PARM_DESC(disable_raw_mode
,
34 "Disable Raw mode reporting for touchpads and keep firmware gestures.");
36 static bool disable_tap_to_click
;
37 module_param(disable_tap_to_click
, bool, 0644);
38 MODULE_PARM_DESC(disable_tap_to_click
,
39 "Disable Tap-To-Click mode reporting for touchpads (only on the K400 currently).");
41 #define REPORT_ID_HIDPP_SHORT 0x10
42 #define REPORT_ID_HIDPP_LONG 0x11
43 #define REPORT_ID_HIDPP_VERY_LONG 0x12
45 #define HIDPP_REPORT_SHORT_LENGTH 7
46 #define HIDPP_REPORT_LONG_LENGTH 20
47 #define HIDPP_REPORT_VERY_LONG_LENGTH 64
49 #define HIDPP_QUIRK_CLASS_WTP BIT(0)
50 #define HIDPP_QUIRK_CLASS_M560 BIT(1)
51 #define HIDPP_QUIRK_CLASS_K400 BIT(2)
52 #define HIDPP_QUIRK_CLASS_G920 BIT(3)
54 /* bits 2..20 are reserved for classes */
55 #define HIDPP_QUIRK_CONNECT_EVENTS BIT(21)
56 #define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS BIT(22)
57 #define HIDPP_QUIRK_NO_HIDINPUT BIT(23)
58 #define HIDPP_QUIRK_FORCE_OUTPUT_REPORTS BIT(24)
60 #define HIDPP_QUIRK_DELAYED_INIT (HIDPP_QUIRK_NO_HIDINPUT | \
61 HIDPP_QUIRK_CONNECT_EVENTS)
64 * There are two hidpp protocols in use, the first version hidpp10 is known
65 * as register access protocol or RAP, the second version hidpp20 is known as
66 * feature access protocol or FAP
68 * Most older devices (including the Unifying usb receiver) use the RAP protocol
69 * where as most newer devices use the FAP protocol. Both protocols are
70 * compatible with the underlying transport, which could be usb, Unifiying, or
71 * bluetooth. The message lengths are defined by the hid vendor specific report
72 * descriptor for the HIDPP_SHORT report type (total message lenth 7 bytes) and
73 * the HIDPP_LONG report type (total message length 20 bytes)
75 * The RAP protocol uses both report types, whereas the FAP only uses HIDPP_LONG
76 * messages. The Unifying receiver itself responds to RAP messages (device index
77 * is 0xFF for the receiver), and all messages (short or long) with a device
78 * index between 1 and 6 are passed untouched to the corresponding paired
81 * The paired device can be RAP or FAP, it will receive the message untouched
82 * from the Unifiying receiver.
87 u8 funcindex_clientid
;
88 u8 params
[HIDPP_REPORT_VERY_LONG_LENGTH
- 4U];
94 u8 params
[HIDPP_REPORT_VERY_LONG_LENGTH
- 4U];
103 u8 rawbytes
[sizeof(struct fap
)];
107 struct hidpp_device
{
108 struct hid_device
*hid_dev
;
109 struct mutex send_mutex
;
110 void *send_receive_buf
;
111 char *name
; /* will never be NULL and should not be freed */
112 wait_queue_head_t wait
;
113 bool answer_available
;
119 struct work_struct work
;
120 struct kfifo delayed_work_fifo
;
122 struct input_dev
*delayed_input
;
124 unsigned long quirks
;
128 /* HID++ 1.0 error codes */
129 #define HIDPP_ERROR 0x8f
130 #define HIDPP_ERROR_SUCCESS 0x00
131 #define HIDPP_ERROR_INVALID_SUBID 0x01
132 #define HIDPP_ERROR_INVALID_ADRESS 0x02
133 #define HIDPP_ERROR_INVALID_VALUE 0x03
134 #define HIDPP_ERROR_CONNECT_FAIL 0x04
135 #define HIDPP_ERROR_TOO_MANY_DEVICES 0x05
136 #define HIDPP_ERROR_ALREADY_EXISTS 0x06
137 #define HIDPP_ERROR_BUSY 0x07
138 #define HIDPP_ERROR_UNKNOWN_DEVICE 0x08
139 #define HIDPP_ERROR_RESOURCE_ERROR 0x09
140 #define HIDPP_ERROR_REQUEST_UNAVAILABLE 0x0a
141 #define HIDPP_ERROR_INVALID_PARAM_VALUE 0x0b
142 #define HIDPP_ERROR_WRONG_PIN_CODE 0x0c
143 /* HID++ 2.0 error codes */
144 #define HIDPP20_ERROR 0xff
146 static void hidpp_connect_event(struct hidpp_device
*hidpp_dev
);
148 static int __hidpp_send_report(struct hid_device
*hdev
,
149 struct hidpp_report
*hidpp_report
)
151 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
152 int fields_count
, ret
;
154 hidpp
= hid_get_drvdata(hdev
);
156 switch (hidpp_report
->report_id
) {
157 case REPORT_ID_HIDPP_SHORT
:
158 fields_count
= HIDPP_REPORT_SHORT_LENGTH
;
160 case REPORT_ID_HIDPP_LONG
:
161 fields_count
= HIDPP_REPORT_LONG_LENGTH
;
163 case REPORT_ID_HIDPP_VERY_LONG
:
164 fields_count
= HIDPP_REPORT_VERY_LONG_LENGTH
;
171 * set the device_index as the receiver, it will be overwritten by
172 * hid_hw_request if needed
174 hidpp_report
->device_index
= 0xff;
176 if (hidpp
->quirks
& HIDPP_QUIRK_FORCE_OUTPUT_REPORTS
) {
177 ret
= hid_hw_output_report(hdev
, (u8
*)hidpp_report
, fields_count
);
179 ret
= hid_hw_raw_request(hdev
, hidpp_report
->report_id
,
180 (u8
*)hidpp_report
, fields_count
, HID_OUTPUT_REPORT
,
184 return ret
== fields_count
? 0 : -1;
188 * hidpp_send_message_sync() returns 0 in case of success, and something else
189 * in case of a failure.
190 * - If ' something else' is positive, that means that an error has been raised
191 * by the protocol itself.
192 * - If ' something else' is negative, that means that we had a classic error
193 * (-ENOMEM, -EPIPE, etc...)
195 static int hidpp_send_message_sync(struct hidpp_device
*hidpp
,
196 struct hidpp_report
*message
,
197 struct hidpp_report
*response
)
201 mutex_lock(&hidpp
->send_mutex
);
203 hidpp
->send_receive_buf
= response
;
204 hidpp
->answer_available
= false;
207 * So that we can later validate the answer when it arrives
210 *response
= *message
;
212 ret
= __hidpp_send_report(hidpp
->hid_dev
, message
);
215 dbg_hid("__hidpp_send_report returned err: %d\n", ret
);
216 memset(response
, 0, sizeof(struct hidpp_report
));
220 if (!wait_event_timeout(hidpp
->wait
, hidpp
->answer_available
,
222 dbg_hid("%s:timeout waiting for response\n", __func__
);
223 memset(response
, 0, sizeof(struct hidpp_report
));
227 if (response
->report_id
== REPORT_ID_HIDPP_SHORT
&&
228 response
->rap
.sub_id
== HIDPP_ERROR
) {
229 ret
= response
->rap
.params
[1];
230 dbg_hid("%s:got hidpp error %02X\n", __func__
, ret
);
234 if ((response
->report_id
== REPORT_ID_HIDPP_LONG
||
235 response
->report_id
== REPORT_ID_HIDPP_VERY_LONG
) &&
236 response
->fap
.feature_index
== HIDPP20_ERROR
) {
237 ret
= response
->fap
.params
[1];
238 dbg_hid("%s:got hidpp 2.0 error %02X\n", __func__
, ret
);
243 mutex_unlock(&hidpp
->send_mutex
);
248 static int hidpp_send_fap_command_sync(struct hidpp_device
*hidpp
,
249 u8 feat_index
, u8 funcindex_clientid
, u8
*params
, int param_count
,
250 struct hidpp_report
*response
)
252 struct hidpp_report
*message
;
255 if (param_count
> sizeof(message
->fap
.params
))
258 message
= kzalloc(sizeof(struct hidpp_report
), GFP_KERNEL
);
262 if (param_count
> (HIDPP_REPORT_LONG_LENGTH
- 4))
263 message
->report_id
= REPORT_ID_HIDPP_VERY_LONG
;
265 message
->report_id
= REPORT_ID_HIDPP_LONG
;
266 message
->fap
.feature_index
= feat_index
;
267 message
->fap
.funcindex_clientid
= funcindex_clientid
;
268 memcpy(&message
->fap
.params
, params
, param_count
);
270 ret
= hidpp_send_message_sync(hidpp
, message
, response
);
275 static int hidpp_send_rap_command_sync(struct hidpp_device
*hidpp_dev
,
276 u8 report_id
, u8 sub_id
, u8 reg_address
, u8
*params
, int param_count
,
277 struct hidpp_report
*response
)
279 struct hidpp_report
*message
;
283 case REPORT_ID_HIDPP_SHORT
:
284 max_count
= HIDPP_REPORT_SHORT_LENGTH
- 4;
286 case REPORT_ID_HIDPP_LONG
:
287 max_count
= HIDPP_REPORT_LONG_LENGTH
- 4;
289 case REPORT_ID_HIDPP_VERY_LONG
:
290 max_count
= HIDPP_REPORT_VERY_LONG_LENGTH
- 4;
296 if (param_count
> max_count
)
299 message
= kzalloc(sizeof(struct hidpp_report
), GFP_KERNEL
);
302 message
->report_id
= report_id
;
303 message
->rap
.sub_id
= sub_id
;
304 message
->rap
.reg_address
= reg_address
;
305 memcpy(&message
->rap
.params
, params
, param_count
);
307 ret
= hidpp_send_message_sync(hidpp_dev
, message
, response
);
312 static void delayed_work_cb(struct work_struct
*work
)
314 struct hidpp_device
*hidpp
= container_of(work
, struct hidpp_device
,
316 hidpp_connect_event(hidpp
);
319 static inline bool hidpp_match_answer(struct hidpp_report
*question
,
320 struct hidpp_report
*answer
)
322 return (answer
->fap
.feature_index
== question
->fap
.feature_index
) &&
323 (answer
->fap
.funcindex_clientid
== question
->fap
.funcindex_clientid
);
326 static inline bool hidpp_match_error(struct hidpp_report
*question
,
327 struct hidpp_report
*answer
)
329 return ((answer
->rap
.sub_id
== HIDPP_ERROR
) ||
330 (answer
->fap
.feature_index
== HIDPP20_ERROR
)) &&
331 (answer
->fap
.funcindex_clientid
== question
->fap
.feature_index
) &&
332 (answer
->fap
.params
[0] == question
->fap
.funcindex_clientid
);
335 static inline bool hidpp_report_is_connect_event(struct hidpp_report
*report
)
337 return (report
->report_id
== REPORT_ID_HIDPP_SHORT
) &&
338 (report
->rap
.sub_id
== 0x41);
342 * hidpp_prefix_name() prefixes the current given name with "Logitech ".
344 static void hidpp_prefix_name(char **name
, int name_length
)
346 #define PREFIX_LENGTH 9 /* "Logitech " */
351 if (name_length
> PREFIX_LENGTH
&&
352 strncmp(*name
, "Logitech ", PREFIX_LENGTH
) == 0)
353 /* The prefix has is already in the name */
356 new_length
= PREFIX_LENGTH
+ name_length
;
357 new_name
= kzalloc(new_length
, GFP_KERNEL
);
361 snprintf(new_name
, new_length
, "Logitech %s", *name
);
368 /* -------------------------------------------------------------------------- */
369 /* HIDP++ 1.0 commands */
370 /* -------------------------------------------------------------------------- */
372 #define HIDPP_SET_REGISTER 0x80
373 #define HIDPP_GET_REGISTER 0x81
374 #define HIDPP_SET_LONG_REGISTER 0x82
375 #define HIDPP_GET_LONG_REGISTER 0x83
377 #define HIDPP_REG_PAIRING_INFORMATION 0xB5
378 #define DEVICE_NAME 0x40
380 static char *hidpp_get_unifying_name(struct hidpp_device
*hidpp_dev
)
382 struct hidpp_report response
;
384 /* hid-logitech-dj is in charge of setting the right device index */
385 u8 params
[1] = { DEVICE_NAME
};
389 ret
= hidpp_send_rap_command_sync(hidpp_dev
,
390 REPORT_ID_HIDPP_SHORT
,
391 HIDPP_GET_LONG_REGISTER
,
392 HIDPP_REG_PAIRING_INFORMATION
,
393 params
, 1, &response
);
397 len
= response
.rap
.params
[1];
399 if (2 + len
> sizeof(response
.rap
.params
))
402 name
= kzalloc(len
+ 1, GFP_KERNEL
);
406 memcpy(name
, &response
.rap
.params
[2], len
);
408 /* include the terminating '\0' */
409 hidpp_prefix_name(&name
, len
+ 1);
414 /* -------------------------------------------------------------------------- */
416 /* -------------------------------------------------------------------------- */
418 #define HIDPP_PAGE_ROOT 0x0000
419 #define HIDPP_PAGE_ROOT_IDX 0x00
421 #define CMD_ROOT_GET_FEATURE 0x01
422 #define CMD_ROOT_GET_PROTOCOL_VERSION 0x11
424 static int hidpp_root_get_feature(struct hidpp_device
*hidpp
, u16 feature
,
425 u8
*feature_index
, u8
*feature_type
)
427 struct hidpp_report response
;
429 u8 params
[2] = { feature
>> 8, feature
& 0x00FF };
431 ret
= hidpp_send_fap_command_sync(hidpp
,
433 CMD_ROOT_GET_FEATURE
,
434 params
, 2, &response
);
438 *feature_index
= response
.fap
.params
[0];
439 *feature_type
= response
.fap
.params
[1];
444 static int hidpp_root_get_protocol_version(struct hidpp_device
*hidpp
)
446 struct hidpp_report response
;
449 ret
= hidpp_send_fap_command_sync(hidpp
,
451 CMD_ROOT_GET_PROTOCOL_VERSION
,
454 if (ret
== HIDPP_ERROR_INVALID_SUBID
) {
455 hidpp
->protocol_major
= 1;
456 hidpp
->protocol_minor
= 0;
460 /* the device might not be connected */
461 if (ret
== HIDPP_ERROR_RESOURCE_ERROR
)
465 hid_err(hidpp
->hid_dev
, "%s: received protocol error 0x%02x\n",
472 hidpp
->protocol_major
= response
.fap
.params
[0];
473 hidpp
->protocol_minor
= response
.fap
.params
[1];
478 static bool hidpp_is_connected(struct hidpp_device
*hidpp
)
482 ret
= hidpp_root_get_protocol_version(hidpp
);
484 hid_dbg(hidpp
->hid_dev
, "HID++ %u.%u device connected.\n",
485 hidpp
->protocol_major
, hidpp
->protocol_minor
);
489 /* -------------------------------------------------------------------------- */
490 /* 0x0005: GetDeviceNameType */
491 /* -------------------------------------------------------------------------- */
493 #define HIDPP_PAGE_GET_DEVICE_NAME_TYPE 0x0005
495 #define CMD_GET_DEVICE_NAME_TYPE_GET_COUNT 0x01
496 #define CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME 0x11
497 #define CMD_GET_DEVICE_NAME_TYPE_GET_TYPE 0x21
499 static int hidpp_devicenametype_get_count(struct hidpp_device
*hidpp
,
500 u8 feature_index
, u8
*nameLength
)
502 struct hidpp_report response
;
505 ret
= hidpp_send_fap_command_sync(hidpp
, feature_index
,
506 CMD_GET_DEVICE_NAME_TYPE_GET_COUNT
, NULL
, 0, &response
);
509 hid_err(hidpp
->hid_dev
, "%s: received protocol error 0x%02x\n",
516 *nameLength
= response
.fap
.params
[0];
521 static int hidpp_devicenametype_get_device_name(struct hidpp_device
*hidpp
,
522 u8 feature_index
, u8 char_index
, char *device_name
, int len_buf
)
524 struct hidpp_report response
;
528 ret
= hidpp_send_fap_command_sync(hidpp
, feature_index
,
529 CMD_GET_DEVICE_NAME_TYPE_GET_DEVICE_NAME
, &char_index
, 1,
533 hid_err(hidpp
->hid_dev
, "%s: received protocol error 0x%02x\n",
540 switch (response
.report_id
) {
541 case REPORT_ID_HIDPP_VERY_LONG
:
542 count
= HIDPP_REPORT_VERY_LONG_LENGTH
- 4;
544 case REPORT_ID_HIDPP_LONG
:
545 count
= HIDPP_REPORT_LONG_LENGTH
- 4;
547 case REPORT_ID_HIDPP_SHORT
:
548 count
= HIDPP_REPORT_SHORT_LENGTH
- 4;
557 for (i
= 0; i
< count
; i
++)
558 device_name
[i
] = response
.fap
.params
[i
];
563 static char *hidpp_get_device_name(struct hidpp_device
*hidpp
)
572 ret
= hidpp_root_get_feature(hidpp
, HIDPP_PAGE_GET_DEVICE_NAME_TYPE
,
573 &feature_index
, &feature_type
);
577 ret
= hidpp_devicenametype_get_count(hidpp
, feature_index
,
582 name
= kzalloc(__name_length
+ 1, GFP_KERNEL
);
586 while (index
< __name_length
) {
587 ret
= hidpp_devicenametype_get_device_name(hidpp
,
588 feature_index
, index
, name
+ index
,
589 __name_length
- index
);
597 /* include the terminating '\0' */
598 hidpp_prefix_name(&name
, __name_length
+ 1);
603 /* -------------------------------------------------------------------------- */
604 /* 0x6010: Touchpad FW items */
605 /* -------------------------------------------------------------------------- */
607 #define HIDPP_PAGE_TOUCHPAD_FW_ITEMS 0x6010
609 #define CMD_TOUCHPAD_FW_ITEMS_SET 0x10
611 struct hidpp_touchpad_fw_items
{
613 uint8_t desired_state
;
619 * send a set state command to the device by reading the current items->state
620 * field. items is then filled with the current state.
622 static int hidpp_touchpad_fw_items_set(struct hidpp_device
*hidpp
,
624 struct hidpp_touchpad_fw_items
*items
)
626 struct hidpp_report response
;
628 u8
*params
= (u8
*)response
.fap
.params
;
630 ret
= hidpp_send_fap_command_sync(hidpp
, feature_index
,
631 CMD_TOUCHPAD_FW_ITEMS_SET
, &items
->state
, 1, &response
);
634 hid_err(hidpp
->hid_dev
, "%s: received protocol error 0x%02x\n",
641 items
->presence
= params
[0];
642 items
->desired_state
= params
[1];
643 items
->state
= params
[2];
644 items
->persistent
= params
[3];
649 /* -------------------------------------------------------------------------- */
650 /* 0x6100: TouchPadRawXY */
651 /* -------------------------------------------------------------------------- */
653 #define HIDPP_PAGE_TOUCHPAD_RAW_XY 0x6100
655 #define CMD_TOUCHPAD_GET_RAW_INFO 0x01
656 #define CMD_TOUCHPAD_SET_RAW_REPORT_STATE 0x21
658 #define EVENT_TOUCHPAD_RAW_XY 0x00
660 #define TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT 0x01
661 #define TOUCHPAD_RAW_XY_ORIGIN_UPPER_LEFT 0x03
663 struct hidpp_touchpad_raw_info
{
674 struct hidpp_touchpad_raw_xy_finger
{
684 struct hidpp_touchpad_raw_xy
{
686 struct hidpp_touchpad_raw_xy_finger fingers
[2];
693 static int hidpp_touchpad_get_raw_info(struct hidpp_device
*hidpp
,
694 u8 feature_index
, struct hidpp_touchpad_raw_info
*raw_info
)
696 struct hidpp_report response
;
698 u8
*params
= (u8
*)response
.fap
.params
;
700 ret
= hidpp_send_fap_command_sync(hidpp
, feature_index
,
701 CMD_TOUCHPAD_GET_RAW_INFO
, NULL
, 0, &response
);
704 hid_err(hidpp
->hid_dev
, "%s: received protocol error 0x%02x\n",
711 raw_info
->x_size
= get_unaligned_be16(¶ms
[0]);
712 raw_info
->y_size
= get_unaligned_be16(¶ms
[2]);
713 raw_info
->z_range
= params
[4];
714 raw_info
->area_range
= params
[5];
715 raw_info
->maxcontacts
= params
[7];
716 raw_info
->origin
= params
[8];
717 /* res is given in unit per inch */
718 raw_info
->res
= get_unaligned_be16(¶ms
[13]) * 2 / 51;
723 static int hidpp_touchpad_set_raw_report_state(struct hidpp_device
*hidpp_dev
,
724 u8 feature_index
, bool send_raw_reports
,
725 bool sensor_enhanced_settings
)
727 struct hidpp_report response
;
732 * bit 1 - 16bit Z, no area
733 * bit 2 - enhanced sensitivity
734 * bit 3 - width, height (4 bits each) instead of area
735 * bit 4 - send raw + gestures (degrades smoothness)
736 * remaining bits - reserved
738 u8 params
= send_raw_reports
| (sensor_enhanced_settings
<< 2);
740 return hidpp_send_fap_command_sync(hidpp_dev
, feature_index
,
741 CMD_TOUCHPAD_SET_RAW_REPORT_STATE
, ¶ms
, 1, &response
);
744 static void hidpp_touchpad_touch_event(u8
*data
,
745 struct hidpp_touchpad_raw_xy_finger
*finger
)
747 u8 x_m
= data
[0] << 2;
748 u8 y_m
= data
[2] << 2;
750 finger
->x
= x_m
<< 6 | data
[1];
751 finger
->y
= y_m
<< 6 | data
[3];
753 finger
->contact_type
= data
[0] >> 6;
754 finger
->contact_status
= data
[2] >> 6;
757 finger
->area
= data
[5];
758 finger
->finger_id
= data
[6] >> 4;
761 static void hidpp_touchpad_raw_xy_event(struct hidpp_device
*hidpp_dev
,
762 u8
*data
, struct hidpp_touchpad_raw_xy
*raw_xy
)
764 memset(raw_xy
, 0, sizeof(struct hidpp_touchpad_raw_xy
));
765 raw_xy
->end_of_frame
= data
[8] & 0x01;
766 raw_xy
->spurious_flag
= (data
[8] >> 1) & 0x01;
767 raw_xy
->finger_count
= data
[15] & 0x0f;
768 raw_xy
->button
= (data
[8] >> 2) & 0x01;
770 if (raw_xy
->finger_count
) {
771 hidpp_touchpad_touch_event(&data
[2], &raw_xy
->fingers
[0]);
772 hidpp_touchpad_touch_event(&data
[9], &raw_xy
->fingers
[1]);
776 /* ************************************************************************** */
780 /* ************************************************************************** */
782 /* -------------------------------------------------------------------------- */
783 /* Touchpad HID++ devices */
784 /* -------------------------------------------------------------------------- */
786 #define WTP_MANUAL_RESOLUTION 39
789 struct input_dev
*input
;
793 u8 button_feature_index
;
796 unsigned int resolution
;
799 static int wtp_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
800 struct hid_field
*field
, struct hid_usage
*usage
,
801 unsigned long **bit
, int *max
)
806 static void wtp_populate_input(struct hidpp_device
*hidpp
,
807 struct input_dev
*input_dev
, bool origin_is_hid_core
)
809 struct wtp_data
*wd
= hidpp
->private_data
;
811 __set_bit(EV_ABS
, input_dev
->evbit
);
812 __set_bit(EV_KEY
, input_dev
->evbit
);
813 __clear_bit(EV_REL
, input_dev
->evbit
);
814 __clear_bit(EV_LED
, input_dev
->evbit
);
816 input_set_abs_params(input_dev
, ABS_MT_POSITION_X
, 0, wd
->x_size
, 0, 0);
817 input_abs_set_res(input_dev
, ABS_MT_POSITION_X
, wd
->resolution
);
818 input_set_abs_params(input_dev
, ABS_MT_POSITION_Y
, 0, wd
->y_size
, 0, 0);
819 input_abs_set_res(input_dev
, ABS_MT_POSITION_Y
, wd
->resolution
);
821 /* Max pressure is not given by the devices, pick one */
822 input_set_abs_params(input_dev
, ABS_MT_PRESSURE
, 0, 50, 0, 0);
824 input_set_capability(input_dev
, EV_KEY
, BTN_LEFT
);
826 if (hidpp
->quirks
& HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS
)
827 input_set_capability(input_dev
, EV_KEY
, BTN_RIGHT
);
829 __set_bit(INPUT_PROP_BUTTONPAD
, input_dev
->propbit
);
831 input_mt_init_slots(input_dev
, wd
->maxcontacts
, INPUT_MT_POINTER
|
832 INPUT_MT_DROP_UNUSED
);
834 wd
->input
= input_dev
;
837 static void wtp_touch_event(struct wtp_data
*wd
,
838 struct hidpp_touchpad_raw_xy_finger
*touch_report
)
842 if (!touch_report
->finger_id
|| touch_report
->contact_type
)
846 slot
= input_mt_get_slot_by_key(wd
->input
, touch_report
->finger_id
);
848 input_mt_slot(wd
->input
, slot
);
849 input_mt_report_slot_state(wd
->input
, MT_TOOL_FINGER
,
850 touch_report
->contact_status
);
851 if (touch_report
->contact_status
) {
852 input_event(wd
->input
, EV_ABS
, ABS_MT_POSITION_X
,
854 input_event(wd
->input
, EV_ABS
, ABS_MT_POSITION_Y
,
855 wd
->flip_y
? wd
->y_size
- touch_report
->y
:
857 input_event(wd
->input
, EV_ABS
, ABS_MT_PRESSURE
,
862 static void wtp_send_raw_xy_event(struct hidpp_device
*hidpp
,
863 struct hidpp_touchpad_raw_xy
*raw
)
865 struct wtp_data
*wd
= hidpp
->private_data
;
868 for (i
= 0; i
< 2; i
++)
869 wtp_touch_event(wd
, &(raw
->fingers
[i
]));
871 if (raw
->end_of_frame
&&
872 !(hidpp
->quirks
& HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS
))
873 input_event(wd
->input
, EV_KEY
, BTN_LEFT
, raw
->button
);
875 if (raw
->end_of_frame
|| raw
->finger_count
<= 2) {
876 input_mt_sync_frame(wd
->input
);
877 input_sync(wd
->input
);
881 static int wtp_mouse_raw_xy_event(struct hidpp_device
*hidpp
, u8
*data
)
883 struct wtp_data
*wd
= hidpp
->private_data
;
884 u8 c1_area
= ((data
[7] & 0xf) * (data
[7] & 0xf) +
885 (data
[7] >> 4) * (data
[7] >> 4)) / 2;
886 u8 c2_area
= ((data
[13] & 0xf) * (data
[13] & 0xf) +
887 (data
[13] >> 4) * (data
[13] >> 4)) / 2;
888 struct hidpp_touchpad_raw_xy raw
= {
889 .timestamp
= data
[1],
893 .contact_status
= !!data
[7],
894 .x
= get_unaligned_le16(&data
[3]),
895 .y
= get_unaligned_le16(&data
[5]),
898 .finger_id
= data
[2],
901 .contact_status
= !!data
[13],
902 .x
= get_unaligned_le16(&data
[9]),
903 .y
= get_unaligned_le16(&data
[11]),
906 .finger_id
= data
[8],
909 .finger_count
= wd
->maxcontacts
,
911 .end_of_frame
= (data
[0] >> 7) == 0,
912 .button
= data
[0] & 0x01,
915 wtp_send_raw_xy_event(hidpp
, &raw
);
920 static int wtp_raw_event(struct hid_device
*hdev
, u8
*data
, int size
)
922 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
923 struct wtp_data
*wd
= hidpp
->private_data
;
924 struct hidpp_report
*report
= (struct hidpp_report
*)data
;
925 struct hidpp_touchpad_raw_xy raw
;
927 if (!wd
|| !wd
->input
)
933 hid_err(hdev
, "Received HID report of bad size (%d)",
937 if (hidpp
->quirks
& HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS
) {
938 input_event(wd
->input
, EV_KEY
, BTN_LEFT
,
940 input_event(wd
->input
, EV_KEY
, BTN_RIGHT
,
942 input_sync(wd
->input
);
947 return wtp_mouse_raw_xy_event(hidpp
, &data
[7]);
949 case REPORT_ID_HIDPP_LONG
:
950 /* size is already checked in hidpp_raw_event. */
951 if ((report
->fap
.feature_index
!= wd
->mt_feature_index
) ||
952 (report
->fap
.funcindex_clientid
!= EVENT_TOUCHPAD_RAW_XY
))
954 hidpp_touchpad_raw_xy_event(hidpp
, data
+ 4, &raw
);
956 wtp_send_raw_xy_event(hidpp
, &raw
);
963 static int wtp_get_config(struct hidpp_device
*hidpp
)
965 struct wtp_data
*wd
= hidpp
->private_data
;
966 struct hidpp_touchpad_raw_info raw_info
= {0};
970 ret
= hidpp_root_get_feature(hidpp
, HIDPP_PAGE_TOUCHPAD_RAW_XY
,
971 &wd
->mt_feature_index
, &feature_type
);
973 /* means that the device is not powered up */
976 ret
= hidpp_touchpad_get_raw_info(hidpp
, wd
->mt_feature_index
,
981 wd
->x_size
= raw_info
.x_size
;
982 wd
->y_size
= raw_info
.y_size
;
983 wd
->maxcontacts
= raw_info
.maxcontacts
;
984 wd
->flip_y
= raw_info
.origin
== TOUCHPAD_RAW_XY_ORIGIN_LOWER_LEFT
;
985 wd
->resolution
= raw_info
.res
;
987 wd
->resolution
= WTP_MANUAL_RESOLUTION
;
992 static int wtp_allocate(struct hid_device
*hdev
, const struct hid_device_id
*id
)
994 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
997 wd
= devm_kzalloc(&hdev
->dev
, sizeof(struct wtp_data
),
1002 hidpp
->private_data
= wd
;
1007 static int wtp_connect(struct hid_device
*hdev
, bool connected
)
1009 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1010 struct wtp_data
*wd
= hidpp
->private_data
;
1017 ret
= wtp_get_config(hidpp
);
1019 hid_err(hdev
, "Can not get wtp config: %d\n", ret
);
1024 return hidpp_touchpad_set_raw_report_state(hidpp
, wd
->mt_feature_index
,
1028 /* ------------------------------------------------------------------------- */
1029 /* Logitech M560 devices */
1030 /* ------------------------------------------------------------------------- */
1033 * Logitech M560 protocol overview
1035 * The Logitech M560 mouse, is designed for windows 8. When the middle and/or
1036 * the sides buttons are pressed, it sends some keyboard keys events
1037 * instead of buttons ones.
1038 * To complicate things further, the middle button keys sequence
1039 * is different from the odd press and the even press.
1041 * forward button -> Super_R
1042 * backward button -> Super_L+'d' (press only)
1043 * middle button -> 1st time: Alt_L+SuperL+XF86TouchpadOff (press only)
1044 * 2nd time: left-click (press only)
1045 * NB: press-only means that when the button is pressed, the
1046 * KeyPress/ButtonPress and KeyRelease/ButtonRelease events are generated
1047 * together sequentially; instead when the button is released, no event is
1051 * 10<xx>0a 3500af03 (where <xx> is the mouse id),
1052 * the mouse reacts differently:
1053 * - it never sends a keyboard key event
1054 * - for the three mouse button it sends:
1055 * middle button press 11<xx>0a 3500af00...
1056 * side 1 button (forward) press 11<xx>0a 3500b000...
1057 * side 2 button (backward) press 11<xx>0a 3500ae00...
1058 * middle/side1/side2 button release 11<xx>0a 35000000...
1061 static const u8 m560_config_parameter
[] = {0x00, 0xaf, 0x03};
1063 struct m560_private_data
{
1064 struct input_dev
*input
;
1067 /* how buttons are mapped in the report */
1068 #define M560_MOUSE_BTN_LEFT 0x01
1069 #define M560_MOUSE_BTN_RIGHT 0x02
1070 #define M560_MOUSE_BTN_WHEEL_LEFT 0x08
1071 #define M560_MOUSE_BTN_WHEEL_RIGHT 0x10
1073 #define M560_SUB_ID 0x0a
1074 #define M560_BUTTON_MODE_REGISTER 0x35
1076 static int m560_send_config_command(struct hid_device
*hdev
, bool connected
)
1078 struct hidpp_report response
;
1079 struct hidpp_device
*hidpp_dev
;
1081 hidpp_dev
= hid_get_drvdata(hdev
);
1086 return hidpp_send_rap_command_sync(
1088 REPORT_ID_HIDPP_SHORT
,
1090 M560_BUTTON_MODE_REGISTER
,
1091 (u8
*)m560_config_parameter
,
1092 sizeof(m560_config_parameter
),
1097 static int m560_allocate(struct hid_device
*hdev
)
1099 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1100 struct m560_private_data
*d
;
1102 d
= devm_kzalloc(&hdev
->dev
, sizeof(struct m560_private_data
),
1107 hidpp
->private_data
= d
;
1112 static int m560_raw_event(struct hid_device
*hdev
, u8
*data
, int size
)
1114 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1115 struct m560_private_data
*mydata
= hidpp
->private_data
;
1118 if (!mydata
|| !mydata
->input
) {
1119 hid_err(hdev
, "error in parameter\n");
1124 hid_err(hdev
, "error in report\n");
1128 if (data
[0] == REPORT_ID_HIDPP_LONG
&&
1129 data
[2] == M560_SUB_ID
&& data
[6] == 0x00) {
1131 * m560 mouse report for middle, forward and backward button
1134 * data[1] = device-id
1136 * data[5] = 0xaf -> middle
1139 * 0x00 -> release all
1145 input_report_key(mydata
->input
, BTN_MIDDLE
, 1);
1148 input_report_key(mydata
->input
, BTN_FORWARD
, 1);
1151 input_report_key(mydata
->input
, BTN_BACK
, 1);
1154 input_report_key(mydata
->input
, BTN_BACK
, 0);
1155 input_report_key(mydata
->input
, BTN_FORWARD
, 0);
1156 input_report_key(mydata
->input
, BTN_MIDDLE
, 0);
1159 hid_err(hdev
, "error in report\n");
1162 input_sync(mydata
->input
);
1164 } else if (data
[0] == 0x02) {
1166 * Logitech M560 mouse report
1168 * data[0] = type (0x02)
1169 * data[1..2] = buttons
1176 input_report_key(mydata
->input
, BTN_LEFT
,
1177 !!(data
[1] & M560_MOUSE_BTN_LEFT
));
1178 input_report_key(mydata
->input
, BTN_RIGHT
,
1179 !!(data
[1] & M560_MOUSE_BTN_RIGHT
));
1181 if (data
[1] & M560_MOUSE_BTN_WHEEL_LEFT
)
1182 input_report_rel(mydata
->input
, REL_HWHEEL
, -1);
1183 else if (data
[1] & M560_MOUSE_BTN_WHEEL_RIGHT
)
1184 input_report_rel(mydata
->input
, REL_HWHEEL
, 1);
1186 v
= hid_snto32(hid_field_extract(hdev
, data
+3, 0, 12), 12);
1187 input_report_rel(mydata
->input
, REL_X
, v
);
1189 v
= hid_snto32(hid_field_extract(hdev
, data
+3, 12, 12), 12);
1190 input_report_rel(mydata
->input
, REL_Y
, v
);
1192 v
= hid_snto32(data
[6], 8);
1193 input_report_rel(mydata
->input
, REL_WHEEL
, v
);
1195 input_sync(mydata
->input
);
1201 static void m560_populate_input(struct hidpp_device
*hidpp
,
1202 struct input_dev
*input_dev
, bool origin_is_hid_core
)
1204 struct m560_private_data
*mydata
= hidpp
->private_data
;
1206 mydata
->input
= input_dev
;
1208 __set_bit(EV_KEY
, mydata
->input
->evbit
);
1209 __set_bit(BTN_MIDDLE
, mydata
->input
->keybit
);
1210 __set_bit(BTN_RIGHT
, mydata
->input
->keybit
);
1211 __set_bit(BTN_LEFT
, mydata
->input
->keybit
);
1212 __set_bit(BTN_BACK
, mydata
->input
->keybit
);
1213 __set_bit(BTN_FORWARD
, mydata
->input
->keybit
);
1215 __set_bit(EV_REL
, mydata
->input
->evbit
);
1216 __set_bit(REL_X
, mydata
->input
->relbit
);
1217 __set_bit(REL_Y
, mydata
->input
->relbit
);
1218 __set_bit(REL_WHEEL
, mydata
->input
->relbit
);
1219 __set_bit(REL_HWHEEL
, mydata
->input
->relbit
);
1222 static int m560_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
1223 struct hid_field
*field
, struct hid_usage
*usage
,
1224 unsigned long **bit
, int *max
)
1229 /* ------------------------------------------------------------------------- */
1230 /* Logitech K400 devices */
1231 /* ------------------------------------------------------------------------- */
1234 * The Logitech K400 keyboard has an embedded touchpad which is seen
1235 * as a mouse from the OS point of view. There is a hardware shortcut to disable
1236 * tap-to-click but the setting is not remembered accross reset, annoying some
1239 * We can toggle this feature from the host by using the feature 0x6010:
1243 struct k400_private_data
{
1247 static int k400_disable_tap_to_click(struct hidpp_device
*hidpp
)
1249 struct k400_private_data
*k400
= hidpp
->private_data
;
1250 struct hidpp_touchpad_fw_items items
= {};
1254 if (!k400
->feature_index
) {
1255 ret
= hidpp_root_get_feature(hidpp
,
1256 HIDPP_PAGE_TOUCHPAD_FW_ITEMS
,
1257 &k400
->feature_index
, &feature_type
);
1259 /* means that the device is not powered up */
1263 ret
= hidpp_touchpad_fw_items_set(hidpp
, k400
->feature_index
, &items
);
1270 static int k400_allocate(struct hid_device
*hdev
)
1272 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1273 struct k400_private_data
*k400
;
1275 k400
= devm_kzalloc(&hdev
->dev
, sizeof(struct k400_private_data
),
1280 hidpp
->private_data
= k400
;
1285 static int k400_connect(struct hid_device
*hdev
, bool connected
)
1287 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1292 if (!disable_tap_to_click
)
1295 return k400_disable_tap_to_click(hidpp
);
1298 /* ------------------------------------------------------------------------- */
1299 /* Logitech G920 Driving Force Racing Wheel for Xbox One */
1300 /* ------------------------------------------------------------------------- */
1302 #define HIDPP_PAGE_G920_FORCE_FEEDBACK 0x8123
1304 /* Using session ID = 1 */
1305 #define CMD_G920_FORCE_GET_APERTURE 0x51
1306 #define CMD_G920_FORCE_SET_APERTURE 0x61
1308 struct g920_private_data
{
1313 static ssize_t
g920_range_show(struct device
*dev
, struct device_attribute
*attr
,
1316 struct hid_device
*hid
= to_hid_device(dev
);
1317 struct hidpp_device
*hidpp
= hid_get_drvdata(hid
);
1318 struct g920_private_data
*pdata
;
1320 pdata
= hidpp
->private_data
;
1322 hid_err(hid
, "Private driver data not found!\n");
1326 return scnprintf(buf
, PAGE_SIZE
, "%u\n", pdata
->range
);
1329 static ssize_t
g920_range_store(struct device
*dev
, struct device_attribute
*attr
,
1330 const char *buf
, size_t count
)
1332 struct hid_device
*hid
= to_hid_device(dev
);
1333 struct hidpp_device
*hidpp
= hid_get_drvdata(hid
);
1334 struct g920_private_data
*pdata
;
1335 struct hidpp_report response
;
1338 u16 range
= simple_strtoul(buf
, NULL
, 10);
1340 pdata
= hidpp
->private_data
;
1342 hid_err(hid
, "Private driver data not found!\n");
1348 else if (range
> 900)
1351 params
[0] = range
>> 8;
1352 params
[1] = range
& 0x00FF;
1354 ret
= hidpp_send_fap_command_sync(hidpp
, pdata
->force_feature
,
1355 CMD_G920_FORCE_SET_APERTURE
, params
, 2, &response
);
1359 pdata
->range
= range
;
1363 static DEVICE_ATTR(range
, S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IWGRP
| S_IROTH
, g920_range_show
, g920_range_store
);
1365 static int g920_allocate(struct hid_device
*hdev
)
1367 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1368 struct g920_private_data
*pdata
;
1370 pdata
= devm_kzalloc(&hdev
->dev
, sizeof(struct g920_private_data
),
1375 hidpp
->private_data
= pdata
;
1380 static int g920_get_config(struct hidpp_device
*hidpp
)
1382 struct g920_private_data
*pdata
= hidpp
->private_data
;
1383 struct hidpp_report response
;
1388 pdata
= hidpp
->private_data
;
1390 hid_err(hidpp
->hid_dev
, "Private driver data not found!\n");
1394 /* Find feature and store for later use */
1395 ret
= hidpp_root_get_feature(hidpp
, HIDPP_PAGE_G920_FORCE_FEEDBACK
,
1396 &feature_index
, &feature_type
);
1400 pdata
->force_feature
= feature_index
;
1402 /* Read current Range */
1403 ret
= hidpp_send_fap_command_sync(hidpp
, feature_index
,
1404 CMD_G920_FORCE_GET_APERTURE
, NULL
, 0, &response
);
1406 hid_err(hidpp
->hid_dev
, "%s: received protocol error 0x%02x\n",
1413 pdata
->range
= get_unaligned_be16(&response
.fap
.params
[0]);
1415 /* Create sysfs interface */
1416 ret
= device_create_file(&(hidpp
->hid_dev
->dev
), &dev_attr_range
);
1418 hid_warn(hidpp
->hid_dev
, "Unable to create sysfs interface for \"range\", errno %d\n", ret
);
1423 /* -------------------------------------------------------------------------- */
1424 /* Generic HID++ devices */
1425 /* -------------------------------------------------------------------------- */
1427 static int hidpp_input_mapping(struct hid_device
*hdev
, struct hid_input
*hi
,
1428 struct hid_field
*field
, struct hid_usage
*usage
,
1429 unsigned long **bit
, int *max
)
1431 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1433 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_WTP
)
1434 return wtp_input_mapping(hdev
, hi
, field
, usage
, bit
, max
);
1435 else if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_M560
&&
1436 field
->application
!= HID_GD_MOUSE
)
1437 return m560_input_mapping(hdev
, hi
, field
, usage
, bit
, max
);
1442 static int hidpp_input_mapped(struct hid_device
*hdev
, struct hid_input
*hi
,
1443 struct hid_field
*field
, struct hid_usage
*usage
,
1444 unsigned long **bit
, int *max
)
1446 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1448 /* Ensure that Logitech G920 is not given a default fuzz/flat value */
1449 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_G920
) {
1450 if (usage
->type
== EV_ABS
&& (usage
->code
== ABS_X
||
1451 usage
->code
== ABS_Y
|| usage
->code
== ABS_Z
||
1452 usage
->code
== ABS_RZ
)) {
1453 field
->application
= HID_GD_MULTIAXIS
;
1461 static void hidpp_populate_input(struct hidpp_device
*hidpp
,
1462 struct input_dev
*input
, bool origin_is_hid_core
)
1464 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_WTP
)
1465 wtp_populate_input(hidpp
, input
, origin_is_hid_core
);
1466 else if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_M560
)
1467 m560_populate_input(hidpp
, input
, origin_is_hid_core
);
1470 static int hidpp_input_configured(struct hid_device
*hdev
,
1471 struct hid_input
*hidinput
)
1473 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1474 struct input_dev
*input
= hidinput
->input
;
1476 hidpp_populate_input(hidpp
, input
, true);
1481 static int hidpp_raw_hidpp_event(struct hidpp_device
*hidpp
, u8
*data
,
1484 struct hidpp_report
*question
= hidpp
->send_receive_buf
;
1485 struct hidpp_report
*answer
= hidpp
->send_receive_buf
;
1486 struct hidpp_report
*report
= (struct hidpp_report
*)data
;
1489 * If the mutex is locked then we have a pending answer from a
1490 * previously sent command.
1492 if (unlikely(mutex_is_locked(&hidpp
->send_mutex
))) {
1494 * Check for a correct hidpp20 answer or the corresponding
1497 if (hidpp_match_answer(question
, report
) ||
1498 hidpp_match_error(question
, report
)) {
1500 hidpp
->answer_available
= true;
1501 wake_up(&hidpp
->wait
);
1503 * This was an answer to a command that this driver sent
1504 * We return 1 to hid-core to avoid forwarding the
1505 * command upstream as it has been treated by the driver
1512 if (unlikely(hidpp_report_is_connect_event(report
))) {
1513 atomic_set(&hidpp
->connected
,
1514 !(report
->rap
.params
[0] & (1 << 6)));
1515 if ((hidpp
->quirks
& HIDPP_QUIRK_CONNECT_EVENTS
) &&
1516 (schedule_work(&hidpp
->work
) == 0))
1517 dbg_hid("%s: connect event already queued\n", __func__
);
1524 static int hidpp_raw_event(struct hid_device
*hdev
, struct hid_report
*report
,
1527 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1530 /* Generic HID++ processing. */
1532 case REPORT_ID_HIDPP_VERY_LONG
:
1533 if (size
!= HIDPP_REPORT_VERY_LONG_LENGTH
) {
1534 hid_err(hdev
, "received hid++ report of bad size (%d)",
1538 ret
= hidpp_raw_hidpp_event(hidpp
, data
, size
);
1540 case REPORT_ID_HIDPP_LONG
:
1541 if (size
!= HIDPP_REPORT_LONG_LENGTH
) {
1542 hid_err(hdev
, "received hid++ report of bad size (%d)",
1546 ret
= hidpp_raw_hidpp_event(hidpp
, data
, size
);
1548 case REPORT_ID_HIDPP_SHORT
:
1549 if (size
!= HIDPP_REPORT_SHORT_LENGTH
) {
1550 hid_err(hdev
, "received hid++ report of bad size (%d)",
1554 ret
= hidpp_raw_hidpp_event(hidpp
, data
, size
);
1558 /* If no report is available for further processing, skip calling
1559 * raw_event of subclasses. */
1563 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_WTP
)
1564 return wtp_raw_event(hdev
, data
, size
);
1565 else if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_M560
)
1566 return m560_raw_event(hdev
, data
, size
);
1571 static void hidpp_overwrite_name(struct hid_device
*hdev
, bool use_unifying
)
1573 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1578 * the device is connected through an Unifying receiver, and
1579 * might not be already connected.
1580 * Ask the receiver for its name.
1582 name
= hidpp_get_unifying_name(hidpp
);
1584 name
= hidpp_get_device_name(hidpp
);
1587 hid_err(hdev
, "unable to retrieve the name of the device");
1589 dbg_hid("HID++: Got name: %s\n", name
);
1590 snprintf(hdev
->name
, sizeof(hdev
->name
), "%s", name
);
1596 static int hidpp_input_open(struct input_dev
*dev
)
1598 struct hid_device
*hid
= input_get_drvdata(dev
);
1600 return hid_hw_open(hid
);
1603 static void hidpp_input_close(struct input_dev
*dev
)
1605 struct hid_device
*hid
= input_get_drvdata(dev
);
1610 static struct input_dev
*hidpp_allocate_input(struct hid_device
*hdev
)
1612 struct input_dev
*input_dev
= devm_input_allocate_device(&hdev
->dev
);
1613 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1618 input_set_drvdata(input_dev
, hdev
);
1619 input_dev
->open
= hidpp_input_open
;
1620 input_dev
->close
= hidpp_input_close
;
1622 input_dev
->name
= hidpp
->name
;
1623 input_dev
->phys
= hdev
->phys
;
1624 input_dev
->uniq
= hdev
->uniq
;
1625 input_dev
->id
.bustype
= hdev
->bus
;
1626 input_dev
->id
.vendor
= hdev
->vendor
;
1627 input_dev
->id
.product
= hdev
->product
;
1628 input_dev
->id
.version
= hdev
->version
;
1629 input_dev
->dev
.parent
= &hdev
->dev
;
1634 static void hidpp_connect_event(struct hidpp_device
*hidpp
)
1636 struct hid_device
*hdev
= hidpp
->hid_dev
;
1638 bool connected
= atomic_read(&hidpp
->connected
);
1639 struct input_dev
*input
;
1640 char *name
, *devm_name
;
1642 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_WTP
) {
1643 ret
= wtp_connect(hdev
, connected
);
1646 } else if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_M560
) {
1647 ret
= m560_send_config_command(hdev
, connected
);
1650 } else if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_K400
) {
1651 ret
= k400_connect(hdev
, connected
);
1656 if (!connected
|| hidpp
->delayed_input
)
1659 /* the device is already connected, we can ask for its name and
1661 if (!hidpp
->protocol_major
) {
1662 ret
= !hidpp_is_connected(hidpp
);
1664 hid_err(hdev
, "Can not get the protocol version.\n");
1667 hid_info(hdev
, "HID++ %u.%u device connected.\n",
1668 hidpp
->protocol_major
, hidpp
->protocol_minor
);
1671 if (!(hidpp
->quirks
& HIDPP_QUIRK_NO_HIDINPUT
))
1672 /* if HID created the input nodes for us, we can stop now */
1675 if (!hidpp
->name
|| hidpp
->name
== hdev
->name
) {
1676 name
= hidpp_get_device_name(hidpp
);
1679 "unable to retrieve the name of the device");
1683 devm_name
= devm_kasprintf(&hdev
->dev
, GFP_KERNEL
, "%s", name
);
1688 hidpp
->name
= devm_name
;
1691 input
= hidpp_allocate_input(hdev
);
1693 hid_err(hdev
, "cannot allocate new input device: %d\n", ret
);
1697 hidpp_populate_input(hidpp
, input
, false);
1699 ret
= input_register_device(input
);
1701 input_free_device(input
);
1703 hidpp
->delayed_input
= input
;
1706 static int hidpp_probe(struct hid_device
*hdev
, const struct hid_device_id
*id
)
1708 struct hidpp_device
*hidpp
;
1711 unsigned int connect_mask
= HID_CONNECT_DEFAULT
;
1713 hidpp
= devm_kzalloc(&hdev
->dev
, sizeof(struct hidpp_device
),
1718 hidpp
->hid_dev
= hdev
;
1719 hidpp
->name
= hdev
->name
;
1720 hid_set_drvdata(hdev
, hidpp
);
1722 hidpp
->quirks
= id
->driver_data
;
1724 if (disable_raw_mode
) {
1725 hidpp
->quirks
&= ~HIDPP_QUIRK_CLASS_WTP
;
1726 hidpp
->quirks
&= ~HIDPP_QUIRK_CONNECT_EVENTS
;
1727 hidpp
->quirks
&= ~HIDPP_QUIRK_NO_HIDINPUT
;
1730 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_WTP
) {
1731 ret
= wtp_allocate(hdev
, id
);
1734 } else if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_M560
) {
1735 ret
= m560_allocate(hdev
);
1738 } else if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_K400
) {
1739 ret
= k400_allocate(hdev
);
1742 } else if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_G920
) {
1743 ret
= g920_allocate(hdev
);
1748 INIT_WORK(&hidpp
->work
, delayed_work_cb
);
1749 mutex_init(&hidpp
->send_mutex
);
1750 init_waitqueue_head(&hidpp
->wait
);
1752 ret
= hid_parse(hdev
);
1754 hid_err(hdev
, "%s:parse failed\n", __func__
);
1755 goto hid_parse_fail
;
1758 if (hidpp
->quirks
& HIDPP_QUIRK_NO_HIDINPUT
)
1759 connect_mask
&= ~HID_CONNECT_HIDINPUT
;
1761 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_G920
) {
1762 ret
= hid_hw_start(hdev
, connect_mask
);
1764 hid_err(hdev
, "hw start failed\n");
1765 goto hid_hw_start_fail
;
1767 ret
= hid_hw_open(hdev
);
1769 dev_err(&hdev
->dev
, "%s:hid_hw_open returned error:%d\n",
1772 goto hid_hw_start_fail
;
1777 /* Allow incoming packets */
1778 hid_device_io_start(hdev
);
1780 connected
= hidpp_is_connected(hidpp
);
1781 if (id
->group
!= HID_GROUP_LOGITECH_DJ_DEVICE
) {
1784 hid_err(hdev
, "Device not connected");
1785 goto hid_hw_open_failed
;
1788 hid_info(hdev
, "HID++ %u.%u device connected.\n",
1789 hidpp
->protocol_major
, hidpp
->protocol_minor
);
1792 hidpp_overwrite_name(hdev
, id
->group
== HID_GROUP_LOGITECH_DJ_DEVICE
);
1793 atomic_set(&hidpp
->connected
, connected
);
1795 if (connected
&& (hidpp
->quirks
& HIDPP_QUIRK_CLASS_WTP
)) {
1796 ret
= wtp_get_config(hidpp
);
1798 goto hid_hw_open_failed
;
1799 } else if (connected
&& (hidpp
->quirks
& HIDPP_QUIRK_CLASS_G920
)) {
1800 ret
= g920_get_config(hidpp
);
1802 goto hid_hw_open_failed
;
1805 /* Block incoming packets */
1806 hid_device_io_stop(hdev
);
1808 if (!(hidpp
->quirks
& HIDPP_QUIRK_CLASS_G920
)) {
1809 ret
= hid_hw_start(hdev
, connect_mask
);
1811 hid_err(hdev
, "%s:hid_hw_start returned error\n", __func__
);
1812 goto hid_hw_start_fail
;
1816 if (hidpp
->quirks
& HIDPP_QUIRK_CONNECT_EVENTS
) {
1817 /* Allow incoming packets */
1818 hid_device_io_start(hdev
);
1820 hidpp_connect_event(hidpp
);
1826 hid_device_io_stop(hdev
);
1827 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_G920
) {
1828 device_remove_file(&hdev
->dev
, &dev_attr_range
);
1834 cancel_work_sync(&hidpp
->work
);
1835 mutex_destroy(&hidpp
->send_mutex
);
1837 hid_set_drvdata(hdev
, NULL
);
1841 static void hidpp_remove(struct hid_device
*hdev
)
1843 struct hidpp_device
*hidpp
= hid_get_drvdata(hdev
);
1845 if (hidpp
->quirks
& HIDPP_QUIRK_CLASS_G920
) {
1846 device_remove_file(&hdev
->dev
, &dev_attr_range
);
1850 cancel_work_sync(&hidpp
->work
);
1851 mutex_destroy(&hidpp
->send_mutex
);
1854 static const struct hid_device_id hidpp_devices
[] = {
1855 { /* wireless touchpad */
1856 HID_DEVICE(BUS_USB
, HID_GROUP_LOGITECH_DJ_DEVICE
,
1857 USB_VENDOR_ID_LOGITECH
, 0x4011),
1858 .driver_data
= HIDPP_QUIRK_CLASS_WTP
| HIDPP_QUIRK_DELAYED_INIT
|
1859 HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS
},
1860 { /* wireless touchpad T650 */
1861 HID_DEVICE(BUS_USB
, HID_GROUP_LOGITECH_DJ_DEVICE
,
1862 USB_VENDOR_ID_LOGITECH
, 0x4101),
1863 .driver_data
= HIDPP_QUIRK_CLASS_WTP
| HIDPP_QUIRK_DELAYED_INIT
},
1864 { /* wireless touchpad T651 */
1865 HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH
,
1866 USB_DEVICE_ID_LOGITECH_T651
),
1867 .driver_data
= HIDPP_QUIRK_CLASS_WTP
},
1868 { /* Mouse logitech M560 */
1869 HID_DEVICE(BUS_USB
, HID_GROUP_LOGITECH_DJ_DEVICE
,
1870 USB_VENDOR_ID_LOGITECH
, 0x402d),
1871 .driver_data
= HIDPP_QUIRK_DELAYED_INIT
| HIDPP_QUIRK_CLASS_M560
},
1872 { /* Keyboard logitech K400 */
1873 HID_DEVICE(BUS_USB
, HID_GROUP_LOGITECH_DJ_DEVICE
,
1874 USB_VENDOR_ID_LOGITECH
, 0x4024),
1875 .driver_data
= HIDPP_QUIRK_CONNECT_EVENTS
| HIDPP_QUIRK_CLASS_K400
},
1877 { HID_DEVICE(BUS_USB
, HID_GROUP_LOGITECH_DJ_DEVICE
,
1878 USB_VENDOR_ID_LOGITECH
, HID_ANY_ID
)},
1880 { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH
, USB_DEVICE_ID_LOGITECH_G920_WHEEL
),
1881 .driver_data
= HIDPP_QUIRK_CLASS_G920
| HIDPP_QUIRK_FORCE_OUTPUT_REPORTS
},
1885 MODULE_DEVICE_TABLE(hid
, hidpp_devices
);
1887 static struct hid_driver hidpp_driver
= {
1888 .name
= "logitech-hidpp-device",
1889 .id_table
= hidpp_devices
,
1890 .probe
= hidpp_probe
,
1891 .remove
= hidpp_remove
,
1892 .raw_event
= hidpp_raw_event
,
1893 .input_configured
= hidpp_input_configured
,
1894 .input_mapping
= hidpp_input_mapping
,
1895 .input_mapped
= hidpp_input_mapped
,
1898 module_hid_driver(hidpp_driver
);