// SPDX-License-Identifier: GPL-2.0-only /* * BYD TouchPad PS/2 mouse driver * * Copyright (C) 2015 Chris Diamand <[email protected]> * Copyright (C) 2015 Richard Pospesel * Copyright (C) 2015 Tai Chi Minh Ralph Eastwood * Copyright (C) 2015 Martin Wimpress * Copyright (C) 2015 Jay Kuri */ #include <linux/delay.h> #include <linux/input.h> #include <linux/libps2.h> #include <linux/serio.h> #include <linux/slab.h> #include "psmouse.h" #include "byd.h" /* PS2 Bits */ #define PS2_Y_OVERFLOW … #define PS2_X_OVERFLOW … #define PS2_Y_SIGN … #define PS2_X_SIGN … #define PS2_ALWAYS_1 … #define PS2_MIDDLE … #define PS2_RIGHT … #define PS2_LEFT … /* * BYD pad constants */ /* * True device resolution is unknown, however experiments show the * resolution is about 111 units/mm. * Absolute coordinate packets are in the range 0-255 for both X and Y * we pick ABS_X/ABS_Y dimensions which are multiples of 256 and in * the right ballpark given the touchpad's physical dimensions and estimate * resolution per spec sheet, device active area dimensions are * 101.6 x 60.1 mm. */ #define BYD_PAD_WIDTH … #define BYD_PAD_HEIGHT … #define BYD_PAD_RESOLUTION … /* * Given the above dimensions, relative packets velocity is in multiples of * 1 unit / 11 milliseconds. We use this dt to estimate distance traveled */ #define BYD_DT … /* Time in jiffies used to timeout various touch events (64 ms) */ #define BYD_TOUCH_TIMEOUT … /* BYD commands reverse engineered from windows driver */ /* * Swipe gesture from off-pad to on-pad * 0 : disable * 1 : enable */ #define BYD_CMD_SET_OFFSCREEN_SWIPE … /* * Tap and drag delay time * 0 : disable * 1 - 8 : least to most delay */ #define BYD_CMD_SET_TAP_DRAG_DELAY_TIME … /* * Physical buttons function mapping * 0 : enable * 4 : normal * 5 : left button custom command * 6 : right button custom command * 8 : disable */ #define BYD_CMD_SET_PHYSICAL_BUTTONS … /* * Absolute mode (1 byte X/Y resolution) * 0 : disable * 2 : enable */ #define BYD_CMD_SET_ABSOLUTE_MODE … /* * Two finger scrolling * 1 : vertical * 2 : horizontal * 3 : vertical + horizontal * 4 : disable */ #define BYD_CMD_SET_TWO_FINGER_SCROLL … /* * Handedness * 1 : right handed * 2 : left handed */ #define BYD_CMD_SET_HANDEDNESS … /* * Tap to click * 1 : enable * 2 : disable */ #define BYD_CMD_SET_TAP … /* * Tap and drag * 1 : tap and hold to drag * 2 : tap and hold to drag + lock * 3 : disable */ #define BYD_CMD_SET_TAP_DRAG … /* * Touch sensitivity * 1 - 7 : least to most sensitive */ #define BYD_CMD_SET_TOUCH_SENSITIVITY … /* * One finger scrolling * 1 : vertical * 2 : horizontal * 3 : vertical + horizontal * 4 : disable */ #define BYD_CMD_SET_ONE_FINGER_SCROLL … /* * One finger scrolling function * 1 : free scrolling * 2 : edge motion * 3 : free scrolling + edge motion * 4 : disable */ #define BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC … /* * Sliding speed * 1 - 5 : slowest to fastest */ #define BYD_CMD_SET_SLIDING_SPEED … /* * Edge motion * 1 : disable * 2 : enable when dragging * 3 : enable when dragging and pointing */ #define BYD_CMD_SET_EDGE_MOTION … /* * Left edge region size * 0 - 7 : smallest to largest width */ #define BYD_CMD_SET_LEFT_EDGE_REGION … /* * Top edge region size * 0 - 9 : smallest to largest height */ #define BYD_CMD_SET_TOP_EDGE_REGION … /* * Disregard palm press as clicks * 1 - 6 : smallest to largest */ #define BYD_CMD_SET_PALM_CHECK … /* * Right edge region size * 0 - 7 : smallest to largest width */ #define BYD_CMD_SET_RIGHT_EDGE_REGION … /* * Bottom edge region size * 0 - 9 : smallest to largest height */ #define BYD_CMD_SET_BOTTOM_EDGE_REGION … /* * Multitouch gestures * 1 : enable * 2 : disable */ #define BYD_CMD_SET_MULTITOUCH … /* * Edge motion speed * 0 : control with finger pressure * 1 - 9 : slowest to fastest */ #define BYD_CMD_SET_EDGE_MOTION_SPEED … /* * Two finger scolling function * 0 : free scrolling * 1 : free scrolling (with momentum) * 2 : edge motion * 3 : free scrolling (with momentum) + edge motion * 4 : disable */ #define BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC … /* * The touchpad generates a mixture of absolute and relative packets, indicated * by the last byte of each packet being set to one of the following: */ #define BYD_PACKET_ABSOLUTE … #define BYD_PACKET_RELATIVE … /* Multitouch gesture packets */ #define BYD_PACKET_PINCH_IN … #define BYD_PACKET_PINCH_OUT … #define BYD_PACKET_ROTATE_CLOCKWISE … #define BYD_PACKET_ROTATE_ANTICLOCKWISE … #define BYD_PACKET_TWO_FINGER_SCROLL_RIGHT … #define BYD_PACKET_TWO_FINGER_SCROLL_DOWN … #define BYD_PACKET_TWO_FINGER_SCROLL_UP … #define BYD_PACKET_TWO_FINGER_SCROLL_LEFT … #define BYD_PACKET_THREE_FINGER_SWIPE_RIGHT … #define BYD_PACKET_THREE_FINGER_SWIPE_DOWN … #define BYD_PACKET_THREE_FINGER_SWIPE_UP … #define BYD_PACKET_THREE_FINGER_SWIPE_LEFT … #define BYD_PACKET_FOUR_FINGER_DOWN … #define BYD_PACKET_FOUR_FINGER_UP … #define BYD_PACKET_REGION_SCROLL_RIGHT … #define BYD_PACKET_REGION_SCROLL_DOWN … #define BYD_PACKET_REGION_SCROLL_UP … #define BYD_PACKET_REGION_SCROLL_LEFT … #define BYD_PACKET_RIGHT_CORNER_CLICK … #define BYD_PACKET_LEFT_CORNER_CLICK … #define BYD_PACKET_LEFT_AND_RIGHT_CORNER_CLICK … #define BYD_PACKET_ONTO_PAD_SWIPE_RIGHT … #define BYD_PACKET_ONTO_PAD_SWIPE_DOWN … #define BYD_PACKET_ONTO_PAD_SWIPE_UP … #define BYD_PACKET_ONTO_PAD_SWIPE_LEFT … struct byd_data { … }; static void byd_report_input(struct psmouse *psmouse) { … } static void byd_clear_touch(struct timer_list *t) { … } static psmouse_ret_t byd_process_byte(struct psmouse *psmouse) { … } static int byd_reset_touchpad(struct psmouse *psmouse) { … } static int byd_reconnect(struct psmouse *psmouse) { … } static void byd_disconnect(struct psmouse *psmouse) { … } int byd_detect(struct psmouse *psmouse, bool set_properties) { … } int byd_init(struct psmouse *psmouse) { … }
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