diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/hid/hid-magicmouse.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/hid/hid-magicmouse.c | 615 |
1 files changed, 0 insertions, 615 deletions
diff --git a/ANDROID_3.4.5/drivers/hid/hid-magicmouse.c b/ANDROID_3.4.5/drivers/hid/hid-magicmouse.c deleted file mode 100644 index 8427463b..00000000 --- a/ANDROID_3.4.5/drivers/hid/hid-magicmouse.c +++ /dev/null @@ -1,615 +0,0 @@ -/* - * Apple "Magic" Wireless Mouse driver - * - * Copyright (c) 2010 Michael Poole <mdpoole@troilus.org> - * Copyright (c) 2010 Chase Douglas <chase.douglas@canonical.com> - */ - -/* - * 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. - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/device.h> -#include <linux/hid.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/usb.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, struct kernel_param *kp) { - unsigned long speed; - if (!val || strict_strtoul(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_touches = true; -module_param(report_touches, bool, 0644); -MODULE_PARM_DESC(report_touches, "Emit touch records (otherwise, only use them for emulation)"); - -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 MOUSE_REPORT_ID 0x29 -#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 - -#define SCROLL_ACCEL_DEFAULT 7 - -/* Single touch emulation should only begin when no touches are currently down. - * This is true when single_touch_id is equal to NO_TOUCHES. If multiple touches - * are down and the touch providing for single touch emulation is lifted, - * single_touch_id is equal to SINGLE_TOUCH_UP. While single touch emulation is - * occurring, single_touch_id corresponds with the tracking id of the touch used. - */ -#define NO_TOUCHES -1 -#define SINGLE_TOUCH_UP -2 - -/* 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)) - -/** - * 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; - u8 size; - } touches[16]; - int tracking_ids[16]; - int single_touch_id; -}; - -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; - - if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) { - 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 { /* 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) { - unsigned long now = jiffies; - int step_x = msc->touches[id].scroll_x - x; - int step_y = msc->touches[id].scroll_y - 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; - - /* 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); - } - break; - } - } - - if (down) { - msc->ntouches++; - if (msc->single_touch_id == NO_TOUCHES) - msc->single_touch_id = id; - } else if (msc->single_touch_id == id) - msc->single_touch_id = SINGLE_TOUCH_UP; - - /* Generate the input events for this touch. */ - if (report_touches && down) { - input_report_abs(input, ABS_MT_TRACKING_ID, id); - 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 (report_undeciphered) { - if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) - input_event(input, EV_MSC, MSC_RAW, tdata[7]); - else /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ - input_event(input, EV_MSC, MSC_RAW, tdata[8]); - } - - input_mt_sync(input); - } -} - -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: - /* 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; - msc->ntouches = 0; - for (ii = 0; ii < npoints; ii++) - magicmouse_emit_touch(msc, ii, data + ii * 9 + 4); - - /* We don't need an MT sync here because trackpad emits a - * BTN_TOUCH event in a new frame when all touches are released. - */ - if (msc->ntouches == 0) - msc->single_touch_id = NO_TOUCHES; - - 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 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; - msc->ntouches = 0; - for (ii = 0; ii < npoints; ii++) - magicmouse_emit_touch(msc, ii, data + ii * 8 + 6); - - if (report_touches && msc->ntouches == 0) - input_mt_sync(input); - - /* 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 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) { - magicmouse_emit_buttons(msc, clicks & 3); - input_report_rel(input, REL_X, x); - input_report_rel(input, REL_Y, y); - } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ - input_report_key(input, BTN_MOUSE, clicks & 1); - input_report_key(input, BTN_TOUCH, msc->ntouches > 0); - input_report_key(input, BTN_TOOL_FINGER, msc->ntouches == 1); - input_report_key(input, BTN_TOOL_DOUBLETAP, msc->ntouches == 2); - input_report_key(input, BTN_TOOL_TRIPLETAP, msc->ntouches == 3); - input_report_key(input, BTN_TOOL_QUADTAP, msc->ntouches == 4); - if (msc->single_touch_id >= 0) { - input_report_abs(input, ABS_X, - msc->touches[msc->single_touch_id].x); - input_report_abs(input, ABS_Y, - msc->touches[msc->single_touch_id].y); - } - } - - input_sync(input); - return 1; -} - -static int magicmouse_setup_input(struct hid_device *hdev, struct hid_input *hi) -{ - struct input_dev *input = hi->input; - - __set_bit(EV_KEY, input->evbit); - - if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) { - __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); - } - } 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_TOUCH, input->keybit); - __set_bit(INPUT_PROP_POINTER, input->propbit); - __set_bit(INPUT_PROP_BUTTONPAD, input->propbit); - } - - if (report_touches) { - __set_bit(EV_ABS, input->evbit); - - input_set_abs_params(input, ABS_MT_TRACKING_ID, 0, 15, 0, 0); - input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255, 4, 0); - input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255, 4, 0); - input_set_abs_params(input, ABS_MT_ORIENTATION, -31, 32, 1, 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_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 { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ - 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) { - __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 && - field->flags & HID_MAIN_ITEM_RELATIVE) - return -1; - - return 0; -} - -static int magicmouse_probe(struct hid_device *hdev, - const struct hid_device_id *id) -{ - __u8 feature[] = { 0xd7, 0x01 }; - struct magicmouse_sc *msc; - struct hid_report *report; - int ret; - - msc = kzalloc(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); - - msc->single_touch_id = NO_TOUCHES; - - ret = hid_parse(hdev); - if (ret) { - hid_err(hdev, "magicmouse hid parse failed\n"); - goto err_free; - } - - ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT); - if (ret) { - hid_err(hdev, "magicmouse hw start failed\n"); - goto err_free; - } - - if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE) - report = hid_register_report(hdev, HID_INPUT_REPORT, - MOUSE_REPORT_ID); - else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ - report = hid_register_report(hdev, HID_INPUT_REPORT, - TRACKPAD_REPORT_ID); - report = hid_register_report(hdev, HID_INPUT_REPORT, - DOUBLE_REPORT_ID); - } - - 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 = hdev->hid_output_raw_report(hdev, feature, sizeof(feature), - HID_FEATURE_REPORT); - if (ret != -EIO && ret != sizeof(feature)) { - hid_err(hdev, "unable to request touch data (%d)\n", ret); - goto err_stop_hw; - } - - return 0; -err_stop_hw: - hid_hw_stop(hdev); -err_free: - kfree(msc); - return ret; -} - -static void magicmouse_remove(struct hid_device *hdev) -{ - struct magicmouse_sc *msc = hid_get_drvdata(hdev); - - hid_hw_stop(hdev); - kfree(msc); -} - -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 }, - { } -}; -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, - .input_mapping = magicmouse_input_mapping, - .input_register = magicmouse_setup_input, -}; - -static int __init magicmouse_init(void) -{ - int ret; - - ret = hid_register_driver(&magicmouse_driver); - if (ret) - pr_err("can't register magicmouse driver\n"); - - return ret; -} - -static void __exit magicmouse_exit(void) -{ - hid_unregister_driver(&magicmouse_driver); -} - -module_init(magicmouse_init); -module_exit(magicmouse_exit); -MODULE_LICENSE("GPL"); |