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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
714 lines
21 KiB
C
714 lines
21 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Apple "Magic" Wireless Mouse driver
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*
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* Copyright (c) 2010 Michael Poole <mdpoole@troilus.org>
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* Copyright (c) 2010 Chase Douglas <chase.douglas@canonical.com>
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*/
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/*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/device.h>
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#include <linux/hid.h>
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#include <linux/input/mt.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include "hid-ids.h"
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static bool emulate_3button = true;
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module_param(emulate_3button, bool, 0644);
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MODULE_PARM_DESC(emulate_3button, "Emulate a middle button");
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static int middle_button_start = -350;
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static int middle_button_stop = +350;
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static bool emulate_scroll_wheel = true;
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module_param(emulate_scroll_wheel, bool, 0644);
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MODULE_PARM_DESC(emulate_scroll_wheel, "Emulate a scroll wheel");
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static unsigned int scroll_speed = 32;
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static int param_set_scroll_speed(const char *val,
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const struct kernel_param *kp) {
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unsigned long speed;
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if (!val || kstrtoul(val, 0, &speed) || speed > 63)
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return -EINVAL;
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scroll_speed = speed;
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return 0;
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}
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module_param_call(scroll_speed, param_set_scroll_speed, param_get_uint, &scroll_speed, 0644);
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MODULE_PARM_DESC(scroll_speed, "Scroll speed, value from 0 (slow) to 63 (fast)");
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static bool scroll_acceleration = false;
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module_param(scroll_acceleration, bool, 0644);
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MODULE_PARM_DESC(scroll_acceleration, "Accelerate sequential scroll events");
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static bool report_undeciphered;
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module_param(report_undeciphered, bool, 0644);
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MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state field using a MSC_RAW event");
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#define TRACKPAD_REPORT_ID 0x28
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#define TRACKPAD2_USB_REPORT_ID 0x02
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#define TRACKPAD2_BT_REPORT_ID 0x31
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#define MOUSE_REPORT_ID 0x29
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#define DOUBLE_REPORT_ID 0xf7
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/* These definitions are not precise, but they're close enough. (Bits
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* 0x03 seem to indicate the aspect ratio of the touch, bits 0x70 seem
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* to be some kind of bit mask -- 0x20 may be a near-field reading,
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* and 0x40 is actual contact, and 0x10 may be a start/stop or change
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* indication.)
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*/
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#define TOUCH_STATE_MASK 0xf0
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#define TOUCH_STATE_NONE 0x00
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#define TOUCH_STATE_START 0x30
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#define TOUCH_STATE_DRAG 0x40
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#define SCROLL_ACCEL_DEFAULT 7
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/* Touch surface information. Dimension is in hundredths of a mm, min and max
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* are in units. */
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#define MOUSE_DIMENSION_X (float)9056
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#define MOUSE_MIN_X -1100
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#define MOUSE_MAX_X 1258
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#define MOUSE_RES_X ((MOUSE_MAX_X - MOUSE_MIN_X) / (MOUSE_DIMENSION_X / 100))
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#define MOUSE_DIMENSION_Y (float)5152
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#define MOUSE_MIN_Y -1589
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#define MOUSE_MAX_Y 2047
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#define MOUSE_RES_Y ((MOUSE_MAX_Y - MOUSE_MIN_Y) / (MOUSE_DIMENSION_Y / 100))
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#define TRACKPAD_DIMENSION_X (float)13000
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#define TRACKPAD_MIN_X -2909
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#define TRACKPAD_MAX_X 3167
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#define TRACKPAD_RES_X \
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((TRACKPAD_MAX_X - TRACKPAD_MIN_X) / (TRACKPAD_DIMENSION_X / 100))
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#define TRACKPAD_DIMENSION_Y (float)11000
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#define TRACKPAD_MIN_Y -2456
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#define TRACKPAD_MAX_Y 2565
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#define TRACKPAD_RES_Y \
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((TRACKPAD_MAX_Y - TRACKPAD_MIN_Y) / (TRACKPAD_DIMENSION_Y / 100))
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#define TRACKPAD2_DIMENSION_X (float)16000
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#define TRACKPAD2_MIN_X -3678
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#define TRACKPAD2_MAX_X 3934
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#define TRACKPAD2_RES_X \
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((TRACKPAD2_MAX_X - TRACKPAD2_MIN_X) / (TRACKPAD2_DIMENSION_X / 100))
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#define TRACKPAD2_DIMENSION_Y (float)11490
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#define TRACKPAD2_MIN_Y -2478
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#define TRACKPAD2_MAX_Y 2587
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#define TRACKPAD2_RES_Y \
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((TRACKPAD2_MAX_Y - TRACKPAD2_MIN_Y) / (TRACKPAD2_DIMENSION_Y / 100))
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/**
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* struct magicmouse_sc - Tracks Magic Mouse-specific data.
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* @input: Input device through which we report events.
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* @quirks: Currently unused.
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* @ntouches: Number of touches in most recent touch report.
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* @scroll_accel: Number of consecutive scroll motions.
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* @scroll_jiffies: Time of last scroll motion.
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* @touches: Most recent data for a touch, indexed by tracking ID.
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* @tracking_ids: Mapping of current touch input data to @touches.
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*/
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struct magicmouse_sc {
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struct input_dev *input;
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unsigned long quirks;
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int ntouches;
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int scroll_accel;
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unsigned long scroll_jiffies;
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struct {
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short x;
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short y;
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short scroll_x;
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short scroll_y;
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u8 size;
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} touches[16];
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int tracking_ids[16];
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};
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static int magicmouse_firm_touch(struct magicmouse_sc *msc)
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{
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int touch = -1;
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int ii;
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/* If there is only one "firm" touch, set touch to its
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* tracking ID.
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*/
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for (ii = 0; ii < msc->ntouches; ii++) {
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int idx = msc->tracking_ids[ii];
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if (msc->touches[idx].size < 8) {
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/* Ignore this touch. */
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} else if (touch >= 0) {
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touch = -1;
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break;
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} else {
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touch = idx;
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}
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}
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return touch;
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}
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static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state)
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{
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int last_state = test_bit(BTN_LEFT, msc->input->key) << 0 |
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test_bit(BTN_RIGHT, msc->input->key) << 1 |
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test_bit(BTN_MIDDLE, msc->input->key) << 2;
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if (emulate_3button) {
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int id;
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/* If some button was pressed before, keep it held
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* down. Otherwise, if there's exactly one firm
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* touch, use that to override the mouse's guess.
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*/
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if (state == 0) {
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/* The button was released. */
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} else if (last_state != 0) {
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state = last_state;
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} else if ((id = magicmouse_firm_touch(msc)) >= 0) {
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int x = msc->touches[id].x;
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if (x < middle_button_start)
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state = 1;
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else if (x > middle_button_stop)
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state = 2;
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else
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state = 4;
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} /* else: we keep the mouse's guess */
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input_report_key(msc->input, BTN_MIDDLE, state & 4);
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}
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input_report_key(msc->input, BTN_LEFT, state & 1);
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input_report_key(msc->input, BTN_RIGHT, state & 2);
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if (state != last_state)
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msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
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}
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static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata)
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{
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struct input_dev *input = msc->input;
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int id, x, y, size, orientation, touch_major, touch_minor, state, down;
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int pressure = 0;
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if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
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id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf;
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x = (tdata[1] << 28 | tdata[0] << 20) >> 20;
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y = -((tdata[2] << 24 | tdata[1] << 16) >> 20);
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size = tdata[5] & 0x3f;
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orientation = (tdata[6] >> 2) - 32;
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touch_major = tdata[3];
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touch_minor = tdata[4];
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state = tdata[7] & TOUCH_STATE_MASK;
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down = state != TOUCH_STATE_NONE;
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} else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
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id = tdata[8] & 0xf;
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x = (tdata[1] << 27 | tdata[0] << 19) >> 19;
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y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19);
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size = tdata[6];
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orientation = (tdata[8] >> 5) - 4;
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touch_major = tdata[4];
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touch_minor = tdata[5];
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pressure = tdata[7];
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state = tdata[3] & 0xC0;
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down = state == 0x80;
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} else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
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id = (tdata[7] << 2 | tdata[6] >> 6) & 0xf;
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x = (tdata[1] << 27 | tdata[0] << 19) >> 19;
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y = -((tdata[3] << 30 | tdata[2] << 22 | tdata[1] << 14) >> 19);
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size = tdata[6] & 0x3f;
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orientation = (tdata[7] >> 2) - 32;
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touch_major = tdata[4];
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touch_minor = tdata[5];
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state = tdata[8] & TOUCH_STATE_MASK;
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down = state != TOUCH_STATE_NONE;
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}
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/* Store tracking ID and other fields. */
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msc->tracking_ids[raw_id] = id;
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msc->touches[id].x = x;
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msc->touches[id].y = y;
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msc->touches[id].size = size;
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/* If requested, emulate a scroll wheel by detecting small
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* vertical touch motions.
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*/
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if (emulate_scroll_wheel && (input->id.product !=
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USB_DEVICE_ID_APPLE_MAGICTRACKPAD2)) {
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unsigned long now = jiffies;
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int step_x = msc->touches[id].scroll_x - x;
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int step_y = msc->touches[id].scroll_y - y;
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/* Calculate and apply the scroll motion. */
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switch (state) {
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case TOUCH_STATE_START:
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msc->touches[id].scroll_x = x;
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msc->touches[id].scroll_y = y;
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/* Reset acceleration after half a second. */
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if (scroll_acceleration && time_before(now,
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msc->scroll_jiffies + HZ / 2))
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msc->scroll_accel = max_t(int,
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msc->scroll_accel - 1, 1);
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else
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msc->scroll_accel = SCROLL_ACCEL_DEFAULT;
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break;
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case TOUCH_STATE_DRAG:
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step_x /= (64 - (int)scroll_speed) * msc->scroll_accel;
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if (step_x != 0) {
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msc->touches[id].scroll_x -= step_x *
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(64 - scroll_speed) * msc->scroll_accel;
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msc->scroll_jiffies = now;
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input_report_rel(input, REL_HWHEEL, -step_x);
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}
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step_y /= (64 - (int)scroll_speed) * msc->scroll_accel;
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if (step_y != 0) {
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msc->touches[id].scroll_y -= step_y *
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(64 - scroll_speed) * msc->scroll_accel;
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msc->scroll_jiffies = now;
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input_report_rel(input, REL_WHEEL, step_y);
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}
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break;
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}
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}
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if (down)
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msc->ntouches++;
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input_mt_slot(input, id);
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input_mt_report_slot_state(input, MT_TOOL_FINGER, down);
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/* Generate the input events for this touch. */
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if (down) {
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input_report_abs(input, ABS_MT_TOUCH_MAJOR, touch_major << 2);
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input_report_abs(input, ABS_MT_TOUCH_MINOR, touch_minor << 2);
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input_report_abs(input, ABS_MT_ORIENTATION, -orientation);
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input_report_abs(input, ABS_MT_POSITION_X, x);
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input_report_abs(input, ABS_MT_POSITION_Y, y);
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if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2)
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input_report_abs(input, ABS_MT_PRESSURE, pressure);
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if (report_undeciphered) {
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if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE)
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input_event(input, EV_MSC, MSC_RAW, tdata[7]);
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else if (input->id.product !=
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USB_DEVICE_ID_APPLE_MAGICTRACKPAD2)
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input_event(input, EV_MSC, MSC_RAW, tdata[8]);
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}
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}
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}
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static int magicmouse_raw_event(struct hid_device *hdev,
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struct hid_report *report, u8 *data, int size)
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{
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struct magicmouse_sc *msc = hid_get_drvdata(hdev);
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struct input_dev *input = msc->input;
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int x = 0, y = 0, ii, clicks = 0, npoints;
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switch (data[0]) {
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case TRACKPAD_REPORT_ID:
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case TRACKPAD2_BT_REPORT_ID:
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/* Expect four bytes of prefix, and N*9 bytes of touch data. */
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if (size < 4 || ((size - 4) % 9) != 0)
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return 0;
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npoints = (size - 4) / 9;
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if (npoints > 15) {
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hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n",
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size);
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return 0;
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}
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msc->ntouches = 0;
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for (ii = 0; ii < npoints; ii++)
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magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
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clicks = data[1];
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/* The following bits provide a device specific timestamp. They
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* are unused here.
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*
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* ts = data[1] >> 6 | data[2] << 2 | data[3] << 10;
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*/
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break;
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case TRACKPAD2_USB_REPORT_ID:
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/* Expect twelve bytes of prefix and N*9 bytes of touch data. */
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if (size < 12 || ((size - 12) % 9) != 0)
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return 0;
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npoints = (size - 12) / 9;
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if (npoints > 15) {
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hid_warn(hdev, "invalid size value (%d) for TRACKPAD2_USB_REPORT_ID\n",
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size);
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return 0;
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}
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msc->ntouches = 0;
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for (ii = 0; ii < npoints; ii++)
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magicmouse_emit_touch(msc, ii, data + ii * 9 + 12);
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clicks = data[1];
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break;
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case MOUSE_REPORT_ID:
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/* Expect six bytes of prefix, and N*8 bytes of touch data. */
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if (size < 6 || ((size - 6) % 8) != 0)
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return 0;
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npoints = (size - 6) / 8;
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if (npoints > 15) {
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hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n",
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size);
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return 0;
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}
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msc->ntouches = 0;
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for (ii = 0; ii < npoints; ii++)
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magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
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/* When emulating three-button mode, it is important
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* to have the current touch information before
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* generating a click event.
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*/
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x = (int)(((data[3] & 0x0c) << 28) | (data[1] << 22)) >> 22;
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y = (int)(((data[3] & 0x30) << 26) | (data[2] << 22)) >> 22;
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clicks = data[3];
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/* The following bits provide a device specific timestamp. They
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* are unused here.
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*
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* ts = data[3] >> 6 | data[4] << 2 | data[5] << 10;
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*/
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break;
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case DOUBLE_REPORT_ID:
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/* Sometimes the trackpad sends two touch reports in one
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* packet.
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*/
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magicmouse_raw_event(hdev, report, data + 2, data[1]);
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magicmouse_raw_event(hdev, report, data + 2 + data[1],
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size - 2 - data[1]);
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break;
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default:
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return 0;
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}
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if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
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magicmouse_emit_buttons(msc, clicks & 3);
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input_report_rel(input, REL_X, x);
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input_report_rel(input, REL_Y, y);
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} else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
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input_mt_sync_frame(input);
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input_report_key(input, BTN_MOUSE, clicks & 1);
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} else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */
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input_report_key(input, BTN_MOUSE, clicks & 1);
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input_mt_report_pointer_emulation(input, true);
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}
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input_sync(input);
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return 1;
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}
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static int magicmouse_setup_input(struct input_dev *input, struct hid_device *hdev)
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{
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int error;
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int mt_flags = 0;
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__set_bit(EV_KEY, input->evbit);
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if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) {
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__set_bit(BTN_LEFT, input->keybit);
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__set_bit(BTN_RIGHT, input->keybit);
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if (emulate_3button)
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__set_bit(BTN_MIDDLE, input->keybit);
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__set_bit(EV_REL, input->evbit);
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__set_bit(REL_X, input->relbit);
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__set_bit(REL_Y, input->relbit);
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if (emulate_scroll_wheel) {
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__set_bit(REL_WHEEL, input->relbit);
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__set_bit(REL_HWHEEL, input->relbit);
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}
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} else if (input->id.product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
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/* setting the device name to ensure the same driver settings
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* get loaded, whether connected through bluetooth or USB
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*/
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input->name = "Apple Inc. Magic Trackpad 2";
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|
__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_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);
|
|
}
|
|
|
|
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_probe(struct hid_device *hdev,
|
|
const struct hid_device_id *id)
|
|
{
|
|
const u8 *feature;
|
|
const u8 feature_mt[] = { 0xD7, 0x01 };
|
|
const u8 feature_mt_trackpad2_usb[] = { 0x02, 0x01 };
|
|
const u8 feature_mt_trackpad2_bt[] = { 0xF1, 0x02, 0x01 };
|
|
u8 *buf;
|
|
struct magicmouse_sc *msc;
|
|
struct hid_report *report;
|
|
int ret;
|
|
int feature_size;
|
|
|
|
if (id->vendor == USB_VENDOR_ID_APPLE &&
|
|
id->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2 &&
|
|
hdev->type != HID_TYPE_USBMOUSE)
|
|
return 0;
|
|
|
|
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->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_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;
|
|
|
|
if (id->product == USB_DEVICE_ID_APPLE_MAGICTRACKPAD2) {
|
|
if (id->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 {
|
|
feature_size = sizeof(feature_mt);
|
|
feature = feature_mt;
|
|
}
|
|
|
|
buf = kmemdup(feature, feature_size, GFP_KERNEL);
|
|
if (!buf) {
|
|
ret = -ENOMEM;
|
|
goto err_stop_hw;
|
|
}
|
|
|
|
/*
|
|
* 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 = hid_hw_raw_request(hdev, buf[0], buf, feature_size,
|
|
HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
|
|
kfree(buf);
|
|
if (ret != -EIO && ret != feature_size) {
|
|
hid_err(hdev, "unable to request touch data (%d)\n", ret);
|
|
goto err_stop_hw;
|
|
}
|
|
|
|
return 0;
|
|
err_stop_hw:
|
|
hid_hw_stop(hdev);
|
|
return ret;
|
|
}
|
|
|
|
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(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,
|
|
.raw_event = magicmouse_raw_event,
|
|
.input_mapping = magicmouse_input_mapping,
|
|
.input_configured = magicmouse_input_configured,
|
|
};
|
|
module_hid_driver(magicmouse_driver);
|
|
|
|
MODULE_LICENSE("GPL");
|