diff options
Diffstat (limited to 'drivers/hid/hid-magicmouse.c')
-rw-r--r-- | drivers/hid/hid-magicmouse.c | 192 |
1 files changed, 153 insertions, 39 deletions
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index 402682e..8791a08 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, @@ -67,6 +70,15 @@ 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. @@ -93,6 +105,7 @@ struct magicmouse_sc { u8 size; } touches[16]; int tracking_ids[16]; + int single_touch_id; }; static int magicmouse_firm_touch(struct magicmouse_sc *msc) @@ -158,15 +171,29 @@ 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; - int id = (tdata[6] << 2 | tdata[5] >> 6) & 0xf; - int x = (tdata[1] << 28 | tdata[0] << 20) >> 20; - int y = -((tdata[2] << 24 | tdata[1] << 16) >> 20); - int size = tdata[5] & 0x3f; - int orientation = (tdata[6] >> 2) - 32; - int touch_major = tdata[3]; - int touch_minor = tdata[4]; - int state = tdata[7] & TOUCH_STATE_MASK; - int down = state != 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; @@ -217,6 +244,13 @@ 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) { input_report_abs(input, ABS_MT_TRACKING_ID, id); @@ -226,14 +260,15 @@ static void magicmouse_emit_touch(struct magicmouse_sc *msc, int raw_id, u8 *tda 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); } - - if (down) - msc->ntouches++; } static int magicmouse_raw_event(struct hid_device *hdev, @@ -241,7 +276,7 @@ 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, ii, clicks, npoints; + int x = 0, y = 0, ii, clicks = 0, npoints; switch (data[0]) { case 0x10: @@ -251,7 +286,30 @@ static int magicmouse_raw_event(struct hid_device *hdev, y = (__s16)(data[4] | data[5] << 8); clicks = data[1]; break; - case TOUCH_REPORT_ID: + 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; @@ -277,6 +335,14 @@ static int magicmouse_raw_event(struct hid_device *hdev, * 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. */ @@ -288,9 +354,25 @@ static int magicmouse_raw_event(struct hid_device *hdev, 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; } @@ -326,18 +408,27 @@ static void magicmouse_setup_input(struct input_dev *input, struct hid_device *h 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) { @@ -347,16 +438,26 @@ 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) { @@ -385,6 +486,8 @@ 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"); @@ -400,7 +503,16 @@ static int magicmouse_probe(struct hid_device *hdev, /* we are handling the input ourselves */ hidinput_disconnect(hdev); - report = hid_register_report(hdev, HID_INPUT_REPORT, TOUCH_REPORT_ID); + 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) { dev_err(&hdev->dev, "unable to register touch report\n"); ret = -ENOMEM; @@ -451,8 +563,10 @@ static void magicmouse_remove(struct hid_device *hdev) } static const struct hid_device_id magic_mice[] = { - { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE), - .driver_data = 0 }, + { HID_BLUETOOTH_DEVICE(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); |