forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
868 lines
26 KiB
868 lines
26 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* |
|
* Apple "Magic" Wireless Mouse driver |
|
* |
|
* Copyright (c) 2010 Michael Poole <[email protected]> |
|
* Copyright (c) 2010 Chase Douglas <[email protected]> |
|
*/ |
|
|
|
/* |
|
*/ |
|
|
|
#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 TRACKPAD_REPORT_ID 0x28 |
|
#define TRACKPAD2_USB_REPORT_ID 0x02 |
|
#define TRACKPAD2_BT_REPORT_ID 0x31 |
|
#define MOUSE_REPORT_ID 0x29 |
|
#define MOUSE2_REPORT_ID 0x12 |
|
#define DOUBLE_REPORT_ID 0xf7 |
|
/* These definitions are not precise, but they're close enough. (Bits |
|
* 0x03 seem to indicate the aspect ratio of the touch, bits 0x70 seem |
|
* to be some kind of bit mask -- 0x20 may be a near-field reading, |
|
* and 0x40 is actual contact, and 0x10 may be a start/stop or change |
|
* indication.) |
|
*/ |
|
#define TOUCH_STATE_MASK 0xf0 |
|
#define TOUCH_STATE_NONE 0x00 |
|
#define TOUCH_STATE_START 0x30 |
|
#define TOUCH_STATE_DRAG 0x40 |
|
|
|
/* 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. |
|
*/ |
|
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; |
|
}; |
|
|
|
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) { |
|
id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf; |
|
x = (tdata[1] << 28 | tdata[0] << 20) >> 20; |
|
y = -((tdata[2] << 24 | tdata[1] << 16) >> 20); |
|
size = tdata[5] & 0x3f; |
|
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) { |
|
id = tdata[8] & 0xf; |
|
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] & 0xC0; |
|
down = state == 0x80; |
|
} else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ |
|
id = (tdata[7] << 2 | tdata[6] >> 6) & 0xf; |
|
x = (tdata[1] << 27 | tdata[0] << 19) >> 19; |
|
y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19); |
|
size = tdata[6] & 0x3f; |
|
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)) { |
|
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 = ((64 - (int)scroll_speed) * msc->scroll_accel) / |
|
SCROLL_HR_STEPS; |
|
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_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_event(input, EV_MSC, MSC_RAW, tdata[7]); |
|
else if (input->id.product != |
|
USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) |
|
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] & 0x0c) << 28) | (data[1] << 22)) >> 22; |
|
y = (int)(((data[3] & 0x30) << 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]); |
|
break; |
|
default: |
|
return 0; |
|
} |
|
|
|
if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE || |
|
input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) { |
|
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_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 && |
|
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) { |
|
__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) { |
|
/* setting the device name to ensure the same driver settings |
|
* get loaded, whether connected through bluetooth or USB |
|
*/ |
|
input->name = "Apple Inc. Magic Trackpad 2"; |
|
|
|
__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_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_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) { |
|
__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) && |
|
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[] = { 0xD7, 0x01 }; |
|
const u8 feature_mt_mouse2[] = { 0xF1, 0x02, 0x01 }; |
|
const u8 feature_mt_trackpad2_usb[] = { 0x02, 0x01 }; |
|
const u8 feature_mt_trackpad2_bt[] = { 0xF1, 0x02, 0x01 }; |
|
u8 *buf; |
|
int ret; |
|
int feature_size; |
|
|
|
if (hdev->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) { |
|
if (hdev->vendor == BT_VENDOR_ID_APPLE) { |
|
feature_size = sizeof(feature_mt_trackpad2_bt); |
|
feature = feature_mt_trackpad2_bt; |
|
} else { /* USB_VENDOR_ID_APPLE */ |
|
feature_size = sizeof(feature_mt_trackpad2_usb); |
|
feature = feature_mt_trackpad2_usb; |
|
} |
|
} else if (hdev->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) { |
|
feature_size = sizeof(feature_mt_mouse2); |
|
feature = feature_mt_mouse2; |
|
} else { |
|
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 int magicmouse_probe(struct hid_device *hdev, |
|
const struct hid_device_id *id) |
|
{ |
|
struct magicmouse_sc *msc; |
|
struct hid_report *report; |
|
int ret; |
|
|
|
if (id->vendor == USB_VENDOR_ID_APPLE && |
|
id->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 && |
|
hdev->type != HID_TYPE_USBMOUSE) |
|
return -ENODEV; |
|
|
|
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 (!msc->input) { |
|
hid_err(hdev, "magicmouse input not registered\n"); |
|
ret = -ENOMEM; |
|
goto err_stop_hw; |
|
} |
|
|
|
if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE) |
|
report = hid_register_report(hdev, HID_INPUT_REPORT, |
|
MOUSE_REPORT_ID, 0); |
|
else if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2) |
|
report = hid_register_report(hdev, HID_INPUT_REPORT, |
|
MOUSE2_REPORT_ID, 0); |
|
else if (id->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) { |
|
if (id->vendor == BT_VENDOR_ID_APPLE) |
|
report = hid_register_report(hdev, HID_INPUT_REPORT, |
|
TRACKPAD2_BT_REPORT_ID, 0); |
|
else /* USB_VENDOR_ID_APPLE */ |
|
report = hid_register_report(hdev, HID_INPUT_REPORT, |
|
TRACKPAD2_USB_REPORT_ID, 0); |
|
} else { /* 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) { |
|
schedule_delayed_work(&msc->work, msecs_to_jiffies(500)); |
|
} |
|
|
|
return 0; |
|
err_stop_hw: |
|
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); |
|
|
|
hid_hw_stop(hdev); |
|
} |
|
|
|
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_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 }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(hid, magic_mice); |
|
|
|
static struct hid_driver magicmouse_driver = { |
|
.name = "magicmouse", |
|
.id_table = magic_mice, |
|
.probe = magicmouse_probe, |
|
.remove = magicmouse_remove, |
|
.raw_event = magicmouse_raw_event, |
|
.event = magicmouse_event, |
|
.input_mapping = magicmouse_input_mapping, |
|
.input_configured = magicmouse_input_configured, |
|
}; |
|
module_hid_driver(magicmouse_driver); |
|
|
|
MODULE_LICENSE("GPL");
|
|
|