diff options
Diffstat (limited to 'drivers/hid/hid-magicmouse.c')
-rw-r--r-- | drivers/hid/hid-magicmouse.c | 325 |
1 files changed, 187 insertions, 138 deletions
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index 319b0e57ee4..e6dc1517166 100644 --- a/drivers/hid/hid-magicmouse.c +++ b/drivers/hid/hid-magicmouse.c @@ -2,6 +2,7 @@ * Apple "Magic" Wireless Mouse driver * * Copyright (c) 2010 Michael Poole <mdpoole@troilus.org> + * Copyright (c) 2010 Chase Douglas <chase.douglas@canonical.com> */ /* @@ -53,7 +54,9 @@ 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 TOUCH_REPORT_ID 0x29 +#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, @@ -67,15 +70,19 @@ MODULE_PARM_DESC(report_undeciphered, "Report undeciphered multi-touch state fie #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 + * occuring, single_touch_id corresponds with the tracking id of the touch used. + */ +#define NO_TOUCHES -1 +#define SINGLE_TOUCH_UP -2 + /** * struct magicmouse_sc - Tracks Magic Mouse-specific data. * @input: Input device through which we report events. * @quirks: Currently unused. - * @last_timestamp: Timestamp from most recent (18-bit) touch report - * (units of milliseconds over short windows, but seems to - * increase faster when there are no touches). - * @delta_time: 18-bit difference between the two most recent touch - * reports from the mouse. * @ntouches: Number of touches in most recent touch report. * @scroll_accel: Number of consecutive scroll motions. * @scroll_jiffies: Time of last scroll motion. @@ -86,8 +93,6 @@ struct magicmouse_sc { struct input_dev *input; unsigned long quirks; - int last_timestamp; - int delta_time; int ntouches; int scroll_accel; unsigned long scroll_jiffies; @@ -98,9 +103,9 @@ struct magicmouse_sc { short scroll_x; short scroll_y; u8 size; - u8 down; } touches[16]; int tracking_ids[16]; + int single_touch_id; }; static int magicmouse_firm_touch(struct magicmouse_sc *msc) @@ -166,18 +171,35 @@ static void magicmouse_emit_buttons(struct magicmouse_sc *msc, int state) static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tdata) { struct input_dev *input = msc->input; - __s32 x_y = tdata[0] << 8 | tdata[1] << 16 | tdata[2] << 24; - int misc = tdata[5] | tdata[6] << 8; - int id = (misc >> 6) & 15; - int x = x_y << 12 >> 20; - int y = -(x_y >> 20); - int down = (tdata[7] & TOUCH_STATE_MASK) != TOUCH_STATE_NONE; + 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 = misc & 63; + msc->touches[id].size = size; /* If requested, emulate a scroll wheel by detecting small * vertical touch motions. @@ -188,7 +210,7 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda int step_y = msc->touches[id].scroll_y - y; /* Calculate and apply the scroll motion. */ - switch (tdata[7] & TOUCH_STATE_MASK) { + switch (state) { case TOUCH_STATE_START: msc->touches[id].scroll_x = x; msc->touches[id].scroll_y = y; @@ -222,21 +244,28 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda } } + 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) { - int orientation = (misc >> 10) - 32; - - msc->touches[id].down = 1; - input_report_abs(input, ABS_MT_TRACKING_ID, id); - input_report_abs(input, ABS_MT_TOUCH_MAJOR, tdata[3]); - input_report_abs(input, ABS_MT_TOUCH_MINOR, tdata[4]); + 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) - input_event(input, EV_MSC, MSC_RAW, tdata[7]); + 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); } @@ -247,39 +276,43 @@ static int magicmouse_raw_event(struct hid_device *hdev, { struct magicmouse_sc *msc = hid_get_drvdata(hdev); struct input_dev *input = msc->input; - int x, y, ts, ii, clicks, last_up; + int x = 0, y = 0, ii, clicks = 0, npoints; switch (data[0]) { - case 0x10: - if (size != 6) + 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; - x = (__s16)(data[2] | data[3] << 8); - y = (__s16)(data[4] | data[5] << 8); + 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 TOUCH_REPORT_ID: + 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; - ts = data[3] >> 6 | data[4] << 2 | data[5] << 10; - msc->delta_time = (ts - msc->last_timestamp) & 0x3ffff; - msc->last_timestamp = ts; - msc->ntouches = (size - 6) / 8; - for (ii = 0; ii < msc->ntouches; ii++) + 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) { - last_up = 1; - for (ii = 0; ii < ARRAY_SIZE(msc->touches); ii++) { - if (msc->touches[ii].down) { - last_up = 0; - msc->touches[ii].down = 0; - } - } - if (last_up) { - input_mt_sync(input); - } - } + 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 @@ -288,68 +321,72 @@ static int magicmouse_raw_event(struct hid_device *hdev, 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; - case 0x20: /* Theoretically battery status (0-100), but I have - * never seen it -- maybe it is only upon request. - */ - case 0x60: /* Unknown, maybe laser on/off. */ - case 0x61: /* Laser reflection status change. - * data[1]: 0 = spotted, 1 = lost - */ default: return 0; } - magicmouse_emit_buttons(msc, clicks & 3); - input_report_rel(input, REL_X, x); - input_report_rel(input, REL_Y, y); + 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_input_open(struct input_dev *dev) -{ - struct hid_device *hid = input_get_drvdata(dev); - - return hid->ll_driver->open(hid); -} - -static void magicmouse_input_close(struct input_dev *dev) -{ - struct hid_device *hid = input_get_drvdata(dev); - - hid->ll_driver->close(hid); -} - static void magicmouse_setup_input(struct input_dev *input, struct hid_device *hdev) { - input_set_drvdata(input, hdev); - input->event = hdev->ll_driver->hidinput_input_event; - input->open = magicmouse_input_open; - input->close = magicmouse_input_close; - - input->name = hdev->name; - input->phys = hdev->phys; - input->uniq = hdev->uniq; - input->id.bustype = hdev->bus; - input->id.vendor = hdev->vendor; - input->id.product = hdev->product; - input->id.version = hdev->version; - input->dev.parent = hdev->dev.parent; - __set_bit(EV_KEY, input->evbit); - __set_bit(BTN_LEFT, input->keybit); - __set_bit(BTN_RIGHT, input->keybit); - if (emulate_3button) - __set_bit(BTN_MIDDLE, input->keybit); - __set_bit(BTN_TOOL_FINGER, 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); + + 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 */ + __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); } if (report_touches) { @@ -359,16 +396,26 @@ static void magicmouse_setup_input(struct input_dev *input, struct hid_device *h 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, -32, 31, 1, 0); - input_set_abs_params(input, ABS_MT_POSITION_X, -1100, 1358, - 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. */ - input_set_abs_params(input, ABS_MT_POSITION_Y, -1589, 2047, - 4, 0); + if (input->id.product == USB_DEVICE_ID_APPLE_MAGICMOUSE) { + input_set_abs_params(input, ABS_MT_POSITION_X, -1100, + 1358, 4, 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, -1589, + 2047, 4, 0); + } else { /* USB_DEVICE_ID_APPLE_MAGICTRACKPAD */ + input_set_abs_params(input, ABS_X, -2909, 3167, 4, 0); + input_set_abs_params(input, ABS_Y, -2456, 2565, 4, 0); + input_set_abs_params(input, ABS_MT_POSITION_X, -2909, + 3167, 4, 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, -2456, + 2565, 4, 0); + } } if (report_undeciphered) { @@ -377,12 +424,22 @@ static void magicmouse_setup_input(struct input_dev *input, struct hid_device *h } } +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; + + return 0; +} + static int magicmouse_probe(struct hid_device *hdev, const struct hid_device_id *id) { - __u8 feature_1[] = { 0xd7, 0x01 }; - __u8 feature_2[] = { 0xf8, 0x01, 0x32 }; - struct input_dev *input; + __u8 feature[] = { 0xd7, 0x01 }; struct magicmouse_sc *msc; struct hid_report *report; int ret; @@ -398,6 +455,8 @@ static int magicmouse_probe(struct hid_device *hdev, msc->quirks = id->driver_data; hid_set_drvdata(hdev, msc); + msc->single_touch_id = NO_TOUCHES; + ret = hid_parse(hdev); if (ret) { dev_err(&hdev->dev, "magicmouse hid parse failed\n"); @@ -410,10 +469,22 @@ static int magicmouse_probe(struct hid_device *hdev, goto err_free; } - /* we are handling the input ourselves */ - hidinput_disconnect(hdev); + /* We do this after hid-input is done parsing reports so that + * hid-input uses the most natural button and axis IDs. + */ + if (msc->input) + magicmouse_setup_input(msc->input, hdev); + + 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); + } - report = hid_register_report(hdev, HID_INPUT_REPORT, TOUCH_REPORT_ID); if (!report) { dev_err(&hdev->dev, "unable to register touch report\n"); ret = -ENOMEM; @@ -421,39 +492,15 @@ static int magicmouse_probe(struct hid_device *hdev, } report->size = 6; - ret = hdev->hid_output_raw_report(hdev, feature_1, sizeof(feature_1), + ret = hdev->hid_output_raw_report(hdev, feature, sizeof(feature), HID_FEATURE_REPORT); - if (ret != sizeof(feature_1)) { - dev_err(&hdev->dev, "unable to request touch data (1:%d)\n", - ret); - goto err_stop_hw; - } - ret = hdev->hid_output_raw_report(hdev, feature_2, - sizeof(feature_2), HID_FEATURE_REPORT); - if (ret != sizeof(feature_2)) { - dev_err(&hdev->dev, "unable to request touch data (2:%d)\n", + if (ret != sizeof(feature)) { + dev_err(&hdev->dev, "unable to request touch data (%d)\n", ret); goto err_stop_hw; } - input = input_allocate_device(); - if (!input) { - dev_err(&hdev->dev, "can't alloc input device\n"); - ret = -ENOMEM; - goto err_stop_hw; - } - magicmouse_setup_input(input, hdev); - - ret = input_register_device(input); - if (ret) { - dev_err(&hdev->dev, "input device registration failed\n"); - goto err_input; - } - msc->input = input; - return 0; -err_input: - input_free_device(input); err_stop_hw: hid_hw_stop(hdev); err_free: @@ -466,13 +513,14 @@ static void magicmouse_remove(struct hid_device *hdev) struct magicmouse_sc *msc = hid_get_drvdata(hdev); hid_hw_stop(hdev); - input_unregister_device(msc->input); 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_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); @@ -483,6 +531,7 @@ static struct hid_driver magicmouse_driver = { .probe = magicmouse_probe, .remove = magicmouse_remove, .raw_event = magicmouse_raw_event, + .input_mapping = magicmouse_input_mapping, }; static int __init magicmouse_init(void) |