// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Apple " Magic " Wireless Mouse driver
*
* Copyright ( c ) 2010 Michael Poole < mdpoole @ troilus . org >
* Copyright ( c ) 2010 Chase Douglas < chase . douglas @ canonical . com >
*/
/*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/input/mt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include "hid-ids.h"
static bool emulate_3button = true ;
module_param(emulate_3button, bool , 0644 );
MODULE_PARM_DESC(emulate_3button, "Emulate a middle button" );
static int middle_button_start = -350 ;
static int middle_button_stop = +350 ;
static bool emulate_scroll_wheel = true ;
module_param(emulate_scroll_wheel, bool , 0644 );
MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel" );
static unsigned int scroll_speed = 32 ;
static int param_set_scroll_speed(const char *val,
const struct kernel_param *kp) {
unsigned long speed;
if (!val || kstrtoul(val, 0 , &speed) || speed > 63 )
return -EINVAL;
scroll_speed = speed;
return 0 ;
}
module_param_call(scroll_speed, param_set_scroll_speed, param_get_uint, &scroll_speed, 0644 );
MODULE_PARM_DESC(scroll_speed, "Scroll speed, value from 0 (slow) to 63 (fast)" );
static bool scroll_acceleration = false ;
module_param(scroll_acceleration, bool , 0644 );
MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events" );
static bool report_undeciphered;
module_param(report_undeciphered, bool , 0644 );
MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state field using a MSC_RAW event" );
#define TRACKPAD2_2021_BT_VERSION 0 x110
#define TRACKPAD_2024_BT_VERSION 0 x314
#define TRACKPAD_REPORT_ID 0 x28
#define TRACKPAD2_USB_REPORT_ID 0 x02
#define TRACKPAD2_BT_REPORT_ID 0 x31
#define MOUSE_REPORT_ID 0 x29
#define MOUSE2_REPORT_ID 0 x12
#define DOUBLE_REPORT_ID 0 xf7
#define USB_BATTERY_TIMEOUT_SEC 60
/* These definitions are not precise, but they're close enough. (Bits
* 0 x03 seem to indicate the aspect ratio of the touch , bits 0 x70 seem
* to be some kind of bit mask - - 0 x20 may be a near - field reading ,
* and 0 x40 is actual contact , and 0 x10 may be a start / stop or change
* indication . )
*/
#define TOUCH_STATE_MASK 0 xf0
#define TOUCH_STATE_NONE 0 x00
#define TOUCH_STATE_START 0 x30
#define TOUCH_STATE_DRAG 0 x40
/* Number of high-resolution events for each low-resolution detent. */
#define SCROLL_HR_STEPS 10
#define SCROLL_HR_MULT (120 / SCROLL_HR_STEPS)
#define SCROLL_HR_THRESHOLD 90 /* units */
#define SCROLL_ACCEL_DEFAULT 7
/* Touch surface information. Dimension is in hundredths of a mm, min and max
* are in units. */
#define MOUSE_DIMENSION_X (float )9056
#define MOUSE_MIN_X -1100
#define MOUSE_MAX_X 1258
#define MOUSE_RES_X ((MOUSE_MAX_X - MOUSE_MIN_X) / (MOUSE_DIMENSION_X / 100 ))
#define MOUSE_DIMENSION_Y (float )5152
#define MOUSE_MIN_Y -1589
#define MOUSE_MAX_Y 2047
#define MOUSE_RES_Y ((MOUSE_MAX_Y - MOUSE_MIN_Y) / (MOUSE_DIMENSION_Y / 100 ))
#define TRACKPAD_DIMENSION_X (float )13000
#define TRACKPAD_MIN_X -2909
#define TRACKPAD_MAX_X 3167
#define TRACKPAD_RES_X \
((TRACKPAD_MAX_X - TRACKPAD_MIN_X) / (TRACKPAD_DIMENSION_X / 100 ))
#define TRACKPAD_DIMENSION_Y (float )11000
#define TRACKPAD_MIN_Y -2456
#define TRACKPAD_MAX_Y 2565
#define TRACKPAD_RES_Y \
((TRACKPAD_MAX_Y - TRACKPAD_MIN_Y) / (TRACKPAD_DIMENSION_Y / 100 ))
#define TRACKPAD2_DIMENSION_X (float )16000
#define TRACKPAD2_MIN_X -3678
#define TRACKPAD2_MAX_X 3934
#define TRACKPAD2_RES_X \
((TRACKPAD2_MAX_X - TRACKPAD2_MIN_X) / (TRACKPAD2_DIMENSION_X / 100 ))
#define TRACKPAD2_DIMENSION_Y (float )11490
#define TRACKPAD2_MIN_Y -2478
#define TRACKPAD2_MAX_Y 2587
#define TRACKPAD2_RES_Y \
((TRACKPAD2_MAX_Y - TRACKPAD2_MIN_Y) / (TRACKPAD2_DIMENSION_Y / 100 ))
/**
* struct magicmouse_sc - Tracks Magic Mouse - specific data .
* @ input : Input device through which we report events .
* @ quirks : Currently unused .
* @ ntouches : Number of touches in most recent touch report .
* @ scroll_accel : Number of consecutive scroll motions .
* @ scroll_jiffies : Time of last scroll motion .
* @ touches : Most recent data for a touch , indexed by tracking ID .
* @ tracking_ids : Mapping of current touch input data to @ touches .
* @ hdev : Pointer to the underlying HID device .
* @ work : Workqueue to handle initialization retry for quirky devices .
* @ battery_timer : Timer for obtaining battery level information .
*/
struct magicmouse_sc {
struct input_dev *input;
unsigned long quirks;
int ntouches;
int scroll_accel;
unsigned long scroll_jiffies;
struct {
short x;
short y;
short scroll_x;
short scroll_y;
short scroll_x_hr;
short scroll_y_hr;
u8 size;
bool scroll_x_active;
bool scroll_y_active;
} touches[16 ];
int tracking_ids[16 ];
struct hid_device *hdev;
struct delayed_work work;
struct timer_list battery_timer;
};
static int magicmouse_firm_touch(struct magicmouse_sc *msc)
{
int touch = -1 ;
int ii;
/* If there is only one "firm" touch, set touch to its
* tracking ID .
*/
for (ii = 0 ; ii < msc->ntouches; ii++) {
int idx = msc->tracking_ids[ii];
if (msc->touches[idx].size < 8 ) {
/* Ignore this touch. */
} else if (touch >= 0 ) {
touch = -1 ;
break ;
} else {
touch = idx;
}
}
return touch;
}
static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state)
{
int last_state = test_bit(BTN_LEFT, msc->input->key) << 0 |
test_bit(BTN_RIGHT, msc->input->key) << 1 |
test_bit(BTN_MIDDLE, msc->input->key) << 2 ;
if (emulate_3button) {
int id;
/* If some button was pressed before, keep it held
* down . Otherwise , if there ' s exactly one firm
* touch , use that to override the mouse ' s guess .
*/
if (state == 0 ) {
/* The button was released. */
} else if (last_state != 0 ) {
state = last_state;
} else if ((id = magicmouse_firm_touch(msc)) >= 0 ) {
int x = msc->touches[id].x;
if (x < middle_button_start)
state = 1 ;
else if (x > middle_button_stop)
state = 2 ;
else
state = 4 ;
} /* else: we keep the mouse's guess */
input_report_key(msc->input, BTN_MIDDLE, state & 4 );
}
input_report_key(msc->input, BTN_LEFT, state & 1 );
input_report_key(msc->input, BTN_RIGHT, state & 2 );
if (state != last_state)
msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
}
static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata)
{
struct input_dev *input = msc->input;
int id, x, y, size, orientation, touch_major, touch_minor, state, down;
int pressure = 0 ;
if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC) {
id = (tdata[6 ] << 2 | tdata[5 ] >> 6 ) & 0 xf;
x = (tdata[1 ] << 28 | tdata[0 ] << 20 ) >> 20 ;
y = -((tdata[2 ] << 24 | tdata[1 ] << 16 ) >> 20 );
size = tdata[5 ] & 0 x3f;
orientation = (tdata[6 ] >> 2 ) - 32 ;
touch_major = tdata[3 ];
touch_minor = tdata[4 ];
state = tdata[7 ] & TOUCH_STATE_MASK;
down = state != TOUCH_STATE_NONE;
} else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 ||
input->id.product ==
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC) {
id = tdata[8 ] & 0 xf;
x = (tdata[1 ] << 27 | tdata[0 ] << 19 ) >> 19 ;
y = -((tdata[3 ] << 30 | tdata[2 ] << 22 | tdata[1 ] << 14 ) >> 19 );
size = tdata[6 ];
orientation = (tdata[8 ] >> 5 ) - 4 ;
touch_major = tdata[4 ];
touch_minor = tdata[5 ];
pressure = tdata[7 ];
state = tdata[3 ] & 0 xC0;
down = state == 0 x80;
} else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
id = (tdata[7 ] << 2 | tdata[6 ] >> 6 ) & 0 xf;
x = (tdata[1 ] << 27 | tdata[0 ] << 19 ) >> 19 ;
y = -((tdata[3 ] << 30 | tdata[2 ] << 22 | tdata[1 ] << 14 ) >> 19 );
size = tdata[6 ] & 0 x3f;
orientation = (tdata[7 ] >> 2 ) - 32 ;
touch_major = tdata[4 ];
touch_minor = tdata[5 ];
state = tdata[8 ] & TOUCH_STATE_MASK;
down = state != TOUCH_STATE_NONE;
}
/* Store tracking ID and other fields. */
msc->tracking_ids[raw_id] = id;
msc->touches[id].x = x;
msc->touches[id].y = y;
msc->touches[id].size = size;
/* If requested, emulate a scroll wheel by detecting small
* vertical touch motions .
*/
if (emulate_scroll_wheel &&
input->id.product != USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 &&
input->id.product != USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC) {
unsigned long now = jiffies;
int step_x = msc->touches[id].scroll_x - x;
int step_y = msc->touches[id].scroll_y - y;
int step_hr =
max_t(int ,
((64 - (int )scroll_speed) * msc->scroll_accel) /
SCROLL_HR_STEPS,
1 );
int step_x_hr = msc->touches[id].scroll_x_hr - x;
int step_y_hr = msc->touches[id].scroll_y_hr - y;
/* Calculate and apply the scroll motion. */
switch (state) {
case TOUCH_STATE_START:
msc->touches[id].scroll_x = x;
msc->touches[id].scroll_y = y;
msc->touches[id].scroll_x_hr = x;
msc->touches[id].scroll_y_hr = y;
msc->touches[id].scroll_x_active = false ;
msc->touches[id].scroll_y_active = false ;
/* Reset acceleration after half a second. */
if (scroll_acceleration && time_before(now,
msc->scroll_jiffies + HZ / 2 ))
msc->scroll_accel = max_t(int ,
msc->scroll_accel - 1 , 1 );
else
msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
break ;
case TOUCH_STATE_DRAG:
step_x /= (64 - (int )scroll_speed) * msc->scroll_accel;
if (step_x != 0 ) {
msc->touches[id].scroll_x -= step_x *
(64 - scroll_speed) * msc->scroll_accel;
msc->scroll_jiffies = now;
input_report_rel(input, REL_HWHEEL, -step_x);
}
step_y /= (64 - (int )scroll_speed) * msc->scroll_accel;
if (step_y != 0 ) {
msc->touches[id].scroll_y -= step_y *
(64 - scroll_speed) * msc->scroll_accel;
msc->scroll_jiffies = now;
input_report_rel(input, REL_WHEEL, step_y);
}
if (!msc->touches[id].scroll_x_active &&
abs(step_x_hr) > SCROLL_HR_THRESHOLD) {
msc->touches[id].scroll_x_active = true ;
msc->touches[id].scroll_x_hr = x;
step_x_hr = 0 ;
}
step_x_hr /= step_hr;
if (step_x_hr != 0 &&
msc->touches[id].scroll_x_active) {
msc->touches[id].scroll_x_hr -= step_x_hr *
step_hr;
input_report_rel(input,
REL_HWHEEL_HI_RES,
-step_x_hr * SCROLL_HR_MULT);
}
if (!msc->touches[id].scroll_y_active &&
abs(step_y_hr) > SCROLL_HR_THRESHOLD) {
msc->touches[id].scroll_y_active = true ;
msc->touches[id].scroll_y_hr = y;
step_y_hr = 0 ;
}
step_y_hr /= step_hr;
if (step_y_hr != 0 &&
msc->touches[id].scroll_y_active) {
msc->touches[id].scroll_y_hr -= step_y_hr *
step_hr;
input_report_rel(input,
REL_WHEEL_HI_RES,
step_y_hr * SCROLL_HR_MULT);
}
break ;
}
}
if (down)
msc->ntouches++;
input_mt_slot(input, id);
input_mt_report_slot_state(input, MT_TOOL_FINGER, down);
/* Generate the input events for this touch. */
if (down) {
input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major << 2 );
input_report_abs(input, ABS_MT_TOUCH_MINOR, touch_minor << 2 );
input_report_abs(input, ABS_MT_ORIENTATION, -orientation);
input_report_abs(input, ABS_MT_POSITION_X, x);
input_report_abs(input, ABS_MT_POSITION_Y, y);
if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 ||
input->id.product ==
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC)
input_report_abs(input, ABS_MT_PRESSURE, pressure);
if (report_undeciphered) {
if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC)
input_event(input, EV_MSC, MSC_RAW, tdata[7 ]);
else if (input->id.product !=
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 &&
input->id.product !=
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC)
input_event(input, EV_MSC, MSC_RAW, tdata[8 ]);
}
}
}
static int magicmouse_raw_event(struct hid_device *hdev,
struct hid_report *report, u8 *data, int size)
{
struct magicmouse_sc *msc = hid_get_drvdata(hdev);
struct input_dev *input = msc->input;
int x = 0 , y = 0 , ii, clicks = 0 , npoints;
switch (data[0 ]) {
case TRACKPAD_REPORT_ID:
case TRACKPAD2_BT_REPORT_ID:
/* Expect four bytes of prefix, and N*9 bytes of touch data. */
if (size < 4 || ((size - 4 ) % 9 ) != 0 )
return 0 ;
npoints = (size - 4 ) / 9 ;
if (npoints > 15 ) {
hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n" ,
size);
return 0 ;
}
msc->ntouches = 0 ;
for (ii = 0 ; ii < npoints; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 9 + 4 );
clicks = data[1 ];
/* The following bits provide a device specific timestamp. They
* are unused here .
*
* ts = data [ 1 ] > > 6 | data [ 2 ] < < 2 | data [ 3 ] < < 10 ;
*/
break ;
case TRACKPAD2_USB_REPORT_ID:
/* Expect twelve bytes of prefix and N*9 bytes of touch data. */
if (size < 12 || ((size - 12 ) % 9 ) != 0 )
return 0 ;
npoints = (size - 12 ) / 9 ;
if (npoints > 15 ) {
hid_warn(hdev, "invalid size value (%d) for TRACKPAD2_USB_REPORT_ID\n" ,
size);
return 0 ;
}
msc->ntouches = 0 ;
for (ii = 0 ; ii < npoints; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 9 + 12 );
clicks = data[1 ];
break ;
case MOUSE_REPORT_ID:
/* Expect six bytes of prefix, and N*8 bytes of touch data. */
if (size < 6 || ((size - 6 ) % 8 ) != 0 )
return 0 ;
npoints = (size - 6 ) / 8 ;
if (npoints > 15 ) {
hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n" ,
size);
return 0 ;
}
msc->ntouches = 0 ;
for (ii = 0 ; ii < npoints; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 8 + 6 );
/* When emulating three-button mode, it is important
* to have the current touch information before
* generating a click event .
*/
x = (int )(((data[3 ] & 0 x0c) << 28 ) | (data[1 ] << 22 )) >> 22 ;
y = (int )(((data[3 ] & 0 x30) << 26 ) | (data[2 ] << 22 )) >> 22 ;
clicks = data[3 ];
/* The following bits provide a device specific timestamp. They
* are unused here .
*
* ts = data [ 3 ] > > 6 | data [ 4 ] < < 2 | data [ 5 ] < < 10 ;
*/
break ;
case MOUSE2_REPORT_ID:
/* Size is either 8 or (14 + 8 * N) */
if (size != 8 && (size < 14 || (size - 14 ) % 8 != 0 ))
return 0 ;
npoints = (size - 14 ) / 8 ;
if (npoints > 15 ) {
hid_warn(hdev, "invalid size value (%d) for MOUSE2_REPORT_ID\n" ,
size);
return 0 ;
}
msc->ntouches = 0 ;
for (ii = 0 ; ii < npoints; ii++)
magicmouse_emit_touch(msc, ii, data + ii * 8 + 14 );
/* When emulating three-button mode, it is important
* to have the current touch information before
* generating a click event .
*/
x = (int )((data[3 ] << 24 ) | (data[2 ] << 16 )) >> 16 ;
y = (int )((data[5 ] << 24 ) | (data[4 ] << 16 )) >> 16 ;
clicks = data[1 ];
/* The following bits provide a device specific timestamp. They
* are unused here .
*
* ts = data [ 11 ] > > 6 | data [ 12 ] < < 2 | data [ 13 ] < < 10 ;
*/
break ;
case DOUBLE_REPORT_ID:
/* Sometimes the trackpad sends two touch reports in one
* packet .
*/
magicmouse_raw_event(hdev, report, data + 2 , data[1 ]);
magicmouse_raw_event(hdev, report, data + 2 + data[1 ],
size - 2 - data[1 ]);
return 0 ;
default :
return 0 ;
}
if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC) {
magicmouse_emit_buttons(msc, clicks & 3 );
input_report_rel(input, REL_X, x);
input_report_rel(input, REL_Y, y);
} else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 ||
input->id.product ==
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC) {
input_mt_sync_frame(input);
input_report_key(input, BTN_MOUSE, clicks & 1 );
} else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
input_report_key(input, BTN_MOUSE, clicks & 1 );
input_mt_report_pointer_emulation(input, true );
}
input_sync(input);
return 1 ;
}
static int magicmouse_event(struct hid_device *hdev, struct hid_field *field,
struct hid_usage *usage, __s32 value)
{
struct magicmouse_sc *msc = hid_get_drvdata(hdev);
if ((msc->input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
msc->input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC) &&
field->report->id == MOUSE2_REPORT_ID) {
/*
* magic_mouse_raw_event has done all the work . Skip hidinput .
*
* Specifically , hidinput may modify BTN_LEFT and BTN_RIGHT ,
* breaking emulate_3button .
*/
return 1 ;
}
return 0 ;
}
static int magicmouse_setup_input(struct input_dev *input, struct hid_device *hdev)
{
int error;
int mt_flags = 0 ;
__set_bit(EV_KEY, input->evbit);
if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC) {
__set_bit(BTN_LEFT, input->keybit);
__set_bit(BTN_RIGHT, input->keybit);
if (emulate_3button)
__set_bit(BTN_MIDDLE, input->keybit);
__set_bit(EV_REL, input->evbit);
__set_bit(REL_X, input->relbit);
__set_bit(REL_Y, input->relbit);
if (emulate_scroll_wheel) {
__set_bit(REL_WHEEL, input->relbit);
__set_bit(REL_HWHEEL, input->relbit);
__set_bit(REL_WHEEL_HI_RES, input->relbit);
__set_bit(REL_HWHEEL_HI_RES, input->relbit);
}
} else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 ||
input->id.product ==
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC) {
/* If the trackpad has been connected to a Mac, the name is
* automatically personalized , e . g . , " Jos é Exp ó sito ' s Trackpad " .
* When connected through Bluetooth , the personalized name is
* reported , however , when connected through USB the generic
* name is reported .
* Set the device name to ensure the same driver settings get
* loaded , whether connected through bluetooth or USB .
*/
if (hdev->vendor == BT_VENDOR_ID_APPLE) {
if (input->id.version == TRACKPAD2_2021_BT_VERSION)
input->name = "Apple Inc. Magic Trackpad 2021" ;
else if (input->id.version == TRACKPAD_2024_BT_VERSION) {
input->name = "Apple Inc. Magic Trackpad USB-C" ;
} else {
input->name = "Apple Inc. Magic Trackpad" ;
}
} else { /* USB_VENDOR_ID_APPLE */
input->name = hdev->name;
}
__clear_bit(EV_MSC, input->evbit);
__clear_bit(BTN_0, input->keybit);
__clear_bit(BTN_RIGHT, input->keybit);
__clear_bit(BTN_MIDDLE, input->keybit);
__set_bit(BTN_MOUSE, input->keybit);
__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
__set_bit(BTN_TOOL_FINGER, input->keybit);
mt_flags = INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED |
INPUT_MT_TRACK;
} else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
/* input->keybit is initialized with incorrect button info
* for Magic Trackpad . There really is only one physical
* button ( BTN_LEFT = = BTN_MOUSE ) . Make sure we don ' t
* advertise buttons that don ' t exist . . .
*/
__clear_bit(BTN_RIGHT, input->keybit);
__clear_bit(BTN_MIDDLE, input->keybit);
__set_bit(BTN_MOUSE, input->keybit);
__set_bit(BTN_TOOL_FINGER, input->keybit);
__set_bit(BTN_TOOL_DOUBLETAP, input->keybit);
__set_bit(BTN_TOOL_TRIPLETAP, input->keybit);
__set_bit(BTN_TOOL_QUADTAP, input->keybit);
__set_bit(BTN_TOOL_QUINTTAP, input->keybit);
__set_bit(BTN_TOUCH, input->keybit);
__set_bit(INPUT_PROP_POINTER, input->propbit);
__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
}
__set_bit(EV_ABS, input->evbit);
error = input_mt_init_slots(input, 16 , mt_flags);
if (error)
return error;
input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0 , 255 << 2 ,
4 , 0 );
input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0 , 255 << 2 ,
4 , 0 );
/* Note: Touch Y position from the device is inverted relative
* to how pointer motion is reported ( and relative to how USB
* HID recommends the coordinates work ) . This driver keeps
* the origin at the same position , and just uses the additive
* inverse of the reported Y .
*/
if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC) {
input_set_abs_params(input, ABS_MT_ORIENTATION, -31 , 32 , 1 , 0 );
input_set_abs_params(input, ABS_MT_POSITION_X,
MOUSE_MIN_X, MOUSE_MAX_X, 4 , 0 );
input_set_abs_params(input, ABS_MT_POSITION_Y,
MOUSE_MIN_Y, MOUSE_MAX_Y, 4 , 0 );
input_abs_set_res(input, ABS_MT_POSITION_X,
MOUSE_RES_X);
input_abs_set_res(input, ABS_MT_POSITION_Y,
MOUSE_RES_Y);
} else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 ||
input->id.product ==
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC) {
input_set_abs_params(input, ABS_MT_PRESSURE, 0 , 253 , 0 , 0 );
input_set_abs_params(input, ABS_PRESSURE, 0 , 253 , 0 , 0 );
input_set_abs_params(input, ABS_MT_ORIENTATION, -3 , 4 , 0 , 0 );
input_set_abs_params(input, ABS_X, TRACKPAD2_MIN_X,
TRACKPAD2_MAX_X, 0 , 0 );
input_set_abs_params(input, ABS_Y, TRACKPAD2_MIN_Y,
TRACKPAD2_MAX_Y, 0 , 0 );
input_set_abs_params(input, ABS_MT_POSITION_X,
TRACKPAD2_MIN_X, TRACKPAD2_MAX_X, 0 , 0 );
input_set_abs_params(input, ABS_MT_POSITION_Y,
TRACKPAD2_MIN_Y, TRACKPAD2_MAX_Y, 0 , 0 );
input_abs_set_res(input, ABS_X, TRACKPAD2_RES_X);
input_abs_set_res(input, ABS_Y, TRACKPAD2_RES_Y);
input_abs_set_res(input, ABS_MT_POSITION_X, TRACKPAD2_RES_X);
input_abs_set_res(input, ABS_MT_POSITION_Y, TRACKPAD2_RES_Y);
} else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
input_set_abs_params(input, ABS_MT_ORIENTATION, -31 , 32 , 1 , 0 );
input_set_abs_params(input, ABS_X, TRACKPAD_MIN_X,
TRACKPAD_MAX_X, 4 , 0 );
input_set_abs_params(input, ABS_Y, TRACKPAD_MIN_Y,
TRACKPAD_MAX_Y, 4 , 0 );
input_set_abs_params(input, ABS_MT_POSITION_X,
TRACKPAD_MIN_X, TRACKPAD_MAX_X, 4 , 0 );
input_set_abs_params(input, ABS_MT_POSITION_Y,
TRACKPAD_MIN_Y, TRACKPAD_MAX_Y, 4 , 0 );
input_abs_set_res(input, ABS_X, TRACKPAD_RES_X);
input_abs_set_res(input, ABS_Y, TRACKPAD_RES_Y);
input_abs_set_res(input, ABS_MT_POSITION_X,
TRACKPAD_RES_X);
input_abs_set_res(input, ABS_MT_POSITION_Y,
TRACKPAD_RES_Y);
}
input_set_events_per_packet(input, 60 );
if (report_undeciphered &&
input->id.product != USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 &&
input->id.product != USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC) {
__set_bit(EV_MSC, input->evbit);
__set_bit(MSC_RAW, input->mscbit);
}
/*
* hid - input may mark device as using autorepeat , but neither
* the trackpad , nor the mouse actually want it .
*/
__clear_bit(EV_REP, input->evbit);
return 0 ;
}
static int magicmouse_input_mapping(struct hid_device *hdev,
struct hid_input *hi, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max)
{
struct magicmouse_sc *msc = hid_get_drvdata(hdev);
if (!msc->input)
msc->input = hi->input;
/* Magic Trackpad does not give relative data after switching to MT */
if ((hi->input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD ||
hi->input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 ||
hi->input->id.product ==
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC) &&
field->flags & HID_MAIN_ITEM_RELATIVE)
return -1 ;
return 0 ;
}
static int magicmouse_input_configured(struct hid_device *hdev,
struct hid_input *hi)
{
struct magicmouse_sc *msc = hid_get_drvdata(hdev);
int ret;
ret = magicmouse_setup_input(msc->input, hdev);
if (ret) {
hid_err(hdev, "magicmouse setup input failed (%d)\n" , ret);
/* clean msc->input to notify probe() of the failure */
msc->input = NULL;
return ret;
}
return 0 ;
}
static int magicmouse_enable_multitouch(struct hid_device *hdev)
{
const u8 *feature;
const u8 feature_mt[] = { 0 xD7, 0 x01 };
const u8 feature_mt_mouse2[] = { 0 xF1, 0 x02, 0 x01 };
const u8 feature_mt_trackpad2_usb[] = { 0 x02, 0 x01 };
const u8 feature_mt_trackpad2_bt[] = { 0 xF1, 0 x02, 0 x01 };
u8 *buf;
int ret;
int feature_size;
switch (hdev->product) {
case USB_DEVICE_ID_APPLE_MAGICTRACKPAD2:
case USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC:
switch (hdev->vendor) {
case BT_VENDOR_ID_APPLE:
feature_size = sizeof (feature_mt_trackpad2_bt);
feature = feature_mt_trackpad2_bt;
break ;
default : /* USB_VENDOR_ID_APPLE */
feature_size = sizeof (feature_mt_trackpad2_usb);
feature = feature_mt_trackpad2_usb;
}
break ;
case USB_DEVICE_ID_APPLE_MAGICMOUSE2:
case USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC:
feature_size = sizeof (feature_mt_mouse2);
feature = feature_mt_mouse2;
break ;
default :
feature_size = sizeof (feature_mt);
feature = feature_mt;
}
buf = kmemdup(feature, feature_size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = hid_hw_raw_request(hdev, buf[0 ], buf, feature_size,
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
kfree(buf);
return ret;
}
static void magicmouse_enable_mt_work(struct work_struct *work)
{
struct magicmouse_sc *msc =
container_of(work, struct magicmouse_sc, work.work);
int ret;
ret = magicmouse_enable_multitouch(msc->hdev);
if (ret < 0 )
hid_err(msc->hdev, "unable to request touch data (%d)\n" , ret);
}
static bool is_usb_magicmouse2(__u32 vendor, __u32 product)
{
if (vendor != USB_VENDOR_ID_APPLE)
return false ;
return product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
product == USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC;
}
static bool is_usb_magictrackpad2(__u32 vendor, __u32 product)
{
if (vendor != USB_VENDOR_ID_APPLE)
return false ;
return product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 ||
product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC;
}
static int magicmouse_fetch_battery(struct hid_device *hdev)
{
#ifdef CONFIG_HID_BATTERY_STRENGTH
struct hid_report_enum *report_enum;
struct hid_report *report;
if (!hdev->battery ||
(!is_usb_magicmouse2(hdev->vendor, hdev->product) &&
!is_usb_magictrackpad2(hdev->vendor, hdev->product)))
return -1 ;
report_enum = &hdev->report_enum[hdev->battery_report_type];
report = report_enum->report_id_hash[hdev->battery_report_id];
if (!report || report->maxfield < 1 )
return -1 ;
if (hdev->battery_capacity == hdev->battery_max)
return -1 ;
hid_hw_request(hdev, report, HID_REQ_GET_REPORT);
return 0 ;
#else
return -1 ;
#endif
}
static void magicmouse_battery_timer_tick(struct timer_list *t)
{
struct magicmouse_sc *msc = timer_container_of(msc, t, battery_timer);
struct hid_device *hdev = msc->hdev;
if (magicmouse_fetch_battery(hdev) == 0 ) {
mod_timer(&msc->battery_timer,
jiffies + secs_to_jiffies(USB_BATTERY_TIMEOUT_SEC));
}
}
static int magicmouse_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
struct magicmouse_sc *msc;
struct hid_report *report;
int ret;
msc = devm_kzalloc(&hdev->dev, sizeof (*msc), GFP_KERNEL);
if (msc == NULL) {
hid_err(hdev, "can't alloc magicmouse descriptor\n" );
return -ENOMEM;
}
msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
msc->hdev = hdev;
INIT_DEFERRABLE_WORK(&msc->work, magicmouse_enable_mt_work);
msc->quirks = id->driver_data;
hid_set_drvdata(hdev, msc);
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "magicmouse hid parse failed\n" );
return ret;
}
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
if (ret) {
hid_err(hdev, "magicmouse hw start failed\n" );
return ret;
}
if (is_usb_magicmouse2(id->vendor, id->product) ||
is_usb_magictrackpad2(id->vendor, id->product)) {
timer_setup(&msc->battery_timer, magicmouse_battery_timer_tick, 0 );
mod_timer(&msc->battery_timer,
jiffies + secs_to_jiffies(USB_BATTERY_TIMEOUT_SEC));
magicmouse_fetch_battery(hdev);
}
if (is_usb_magicmouse2(id->vendor, id->product) ||
(is_usb_magictrackpad2(id->vendor, id->product) &&
hdev->type != HID_TYPE_USBMOUSE))
return 0 ;
if (!msc->input) {
hid_err(hdev, "magicmouse input not registered\n" );
ret = -ENOMEM;
goto err_stop_hw;
}
switch (id->product) {
case USB_DEVICE_ID_APPLE_MAGICMOUSE:
report = hid_register_report(hdev, HID_INPUT_REPORT, MOUSE_REPORT_ID, 0 );
break ;
case USB_DEVICE_ID_APPLE_MAGICMOUSE2:
case USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC:
report = hid_register_report(hdev, HID_INPUT_REPORT, MOUSE2_REPORT_ID, 0 );
break ;
case USB_DEVICE_ID_APPLE_MAGICTRACKPAD2:
case USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC:
switch (id->vendor) {
case BT_VENDOR_ID_APPLE:
report = hid_register_report(hdev, HID_INPUT_REPORT,
TRACKPAD2_BT_REPORT_ID, 0 );
break ;
default :
report = hid_register_report(hdev, HID_INPUT_REPORT,
TRACKPAD2_USB_REPORT_ID, 0 );
}
break ;
default : /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
report = hid_register_report(hdev, HID_INPUT_REPORT,
TRACKPAD_REPORT_ID, 0 );
report = hid_register_report(hdev, HID_INPUT_REPORT,
DOUBLE_REPORT_ID, 0 );
}
if (!report) {
hid_err(hdev, "unable to register touch report\n" );
ret = -ENOMEM;
goto err_stop_hw;
}
report->size = 6 ;
/*
* Some devices repond with ' invalid report id ' when feature
* report switching it into multitouch mode is sent to it .
*
* This results in - EIO from the _ raw low - level transport callback ,
* but there seems to be no other way of switching the mode .
* Thus the super - ugly hacky success check below .
*/
ret = magicmouse_enable_multitouch(hdev);
if (ret != -EIO && ret < 0 ) {
hid_err(hdev, "unable to request touch data (%d)\n" , ret);
goto err_stop_hw;
}
if (ret == -EIO && (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC)) {
schedule_delayed_work(&msc->work, msecs_to_jiffies(500 ));
}
return 0 ;
err_stop_hw:
if (is_usb_magicmouse2(id->vendor, id->product) ||
is_usb_magictrackpad2(id->vendor, id->product))
timer_delete_sync(&msc->battery_timer);
hid_hw_stop(hdev);
return ret;
}
static void magicmouse_remove(struct hid_device *hdev)
{
struct magicmouse_sc *msc = hid_get_drvdata(hdev);
if (msc) {
cancel_delayed_work_sync(&msc->work);
if (is_usb_magicmouse2(hdev->vendor, hdev->product) ||
is_usb_magictrackpad2(hdev->vendor, hdev->product))
timer_delete_sync(&msc->battery_timer);
}
hid_hw_stop(hdev);
}
static const __u8 *magicmouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
unsigned int *rsize)
{
/*
* Change the usage from :
* 0 x06 , 0 x00 , 0 xff , // Usage Page (Vendor Defined Page 1) 0
* 0 x09 , 0 x0b , // Usage (Vendor Usage 0x0b) 3
* To :
* 0 x05 , 0 x01 , // Usage Page (Generic Desktop) 0
* 0 x09 , 0 x02 , // Usage (Mouse) 2
*/
if ((is_usb_magicmouse2(hdev->vendor, hdev->product) ||
is_usb_magictrackpad2(hdev->vendor, hdev->product)) &&
*rsize == 83 && rdesc[46 ] == 0 x84 && rdesc[58 ] == 0 x85) {
hid_info(hdev,
"fixing up magicmouse battery report descriptor\n" );
*rsize = *rsize - 1 ;
rdesc = kmemdup(rdesc + 1 , *rsize, GFP_KERNEL);
if (!rdesc)
return NULL;
rdesc[0 ] = 0 x05;
rdesc[1 ] = 0 x01;
rdesc[2 ] = 0 x09;
rdesc[3 ] = 0 x02;
}
return rdesc;
}
static const struct hid_device_id magic_mice[] = {
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICMOUSE), .driver_data = 0 },
{ HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICMOUSE2), .driver_data = 0 },
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICMOUSE2), .driver_data = 0 },
{ HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC), .driver_data = 0 },
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICMOUSE2_USBC), .driver_data = 0 },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICTRACKPAD), .driver_data = 0 },
{ HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2), .driver_data = 0 },
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2), .driver_data = 0 },
{ HID_BLUETOOTH_DEVICE(BT_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC), .driver_data = 0 },
{ HID_USB_DEVICE(USB_VENDOR_ID_APPLE,
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2_USBC), .driver_data = 0 },
{ }
};
MODULE_DEVICE_TABLE(hid, magic_mice);
static struct hid_driver magicmouse_driver = {
.name = "magicmouse" ,
.id_table = magic_mice,
.probe = magicmouse_probe,
.remove = magicmouse_remove,
.report_fixup = magicmouse_report_fixup,
.raw_event = magicmouse_raw_event,
.event = magicmouse_event,
.input_mapping = magicmouse_input_mapping,
.input_configured = magicmouse_input_configured,
};
module_hid_driver(magicmouse_driver);
MODULE_DESCRIPTION("Apple \" Magic\" Wireless Mouse driver" );
MODULE_LICENSE("GPL" );
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