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-rw-r--r--drivers/hid/hid-magicmouse.c968
1 files changed, 968 insertions, 0 deletions
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
new file mode 100644
index 000000000..c9c968d4b
--- /dev/null
+++ b/drivers/hid/hid-magicmouse.c
@@ -0,0 +1,968 @@
+// 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 0x110
+
+#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
+#define USB_BATTERY_TIMEOUT_MS 60000
+
+/* 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;
+ 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) {
+ 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 =
+ 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_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]);
+ return 0;
+ 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) {
+ /* If the trackpad has been connected to a Mac, the name is
+ * automatically personalized, e.g., "José Expósito'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";
+ else
+ input->name = "Apple Inc. Magic Trackpad 2";
+ } 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_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_fetch_battery(struct hid_device *hdev)
+{
+#ifdef CONFIG_HID_BATTERY_STRENGTH
+ struct hid_report_enum *report_enum;
+ struct hid_report *report;
+
+ if (!hdev->battery || hdev->vendor != USB_VENDOR_ID_APPLE ||
+ (hdev->product != USB_DEVICE_ID_APPLE_MAGICMOUSE2 &&
+ hdev->product != USB_DEVICE_ID_APPLE_MAGICTRACKPAD2))
+ 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 = from_timer(msc, t, battery_timer);
+ struct hid_device *hdev = msc->hdev;
+
+ if (magicmouse_fetch_battery(hdev) == 0) {
+ mod_timer(&msc->battery_timer,
+ jiffies + msecs_to_jiffies(USB_BATTERY_TIMEOUT_MS));
+ }
+}
+
+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;
+ }
+
+ timer_setup(&msc->battery_timer, magicmouse_battery_timer_tick, 0);
+ mod_timer(&msc->battery_timer,
+ jiffies + msecs_to_jiffies(USB_BATTERY_TIMEOUT_MS));
+ magicmouse_fetch_battery(hdev);
+
+ if (id->vendor == USB_VENDOR_ID_APPLE &&
+ (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
+ (id->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 && hdev->type != HID_TYPE_USBMOUSE)))
+ return 0;
+
+ 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:
+ del_timer_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);
+ del_timer_sync(&msc->battery_timer);
+ }
+
+ hid_hw_stop(hdev);
+}
+
+static __u8 *magicmouse_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+ unsigned int *rsize)
+{
+ /*
+ * Change the usage from:
+ * 0x06, 0x00, 0xff, // Usage Page (Vendor Defined Page 1) 0
+ * 0x09, 0x0b, // Usage (Vendor Usage 0x0b) 3
+ * To:
+ * 0x05, 0x01, // Usage Page (Generic Desktop) 0
+ * 0x09, 0x02, // Usage (Mouse) 2
+ */
+ if (hdev->vendor == USB_VENDOR_ID_APPLE &&
+ (hdev->product == USB_DEVICE_ID_APPLE_MAGICMOUSE2 ||
+ hdev->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) &&
+ *rsize == 83 && rdesc[46] == 0x84 && rdesc[58] == 0x85) {
+ 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] = 0x05;
+ rdesc[1] = 0x01;
+ rdesc[2] = 0x09;
+ rdesc[3] = 0x02;
+ }
+
+ 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(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,
+ .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_LICENSE("GPL");