^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * BYD TouchPad PS/2 mouse driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2015 Chris Diamand <chris@diamand.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2015 Richard Pospesel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2015 Tai Chi Minh Ralph Eastwood
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2015 Martin Wimpress
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2015 Jay Kuri
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/libps2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/serio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "psmouse.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "byd.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* PS2 Bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define PS2_Y_OVERFLOW BIT_MASK(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define PS2_X_OVERFLOW BIT_MASK(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define PS2_Y_SIGN BIT_MASK(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define PS2_X_SIGN BIT_MASK(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define PS2_ALWAYS_1 BIT_MASK(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define PS2_MIDDLE BIT_MASK(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define PS2_RIGHT BIT_MASK(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #define PS2_LEFT BIT_MASK(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * BYD pad constants
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * True device resolution is unknown, however experiments show the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * resolution is about 111 units/mm.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * Absolute coordinate packets are in the range 0-255 for both X and Y
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * we pick ABS_X/ABS_Y dimensions which are multiples of 256 and in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * the right ballpark given the touchpad's physical dimensions and estimate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * resolution per spec sheet, device active area dimensions are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * 101.6 x 60.1 mm.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define BYD_PAD_WIDTH 11264
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define BYD_PAD_HEIGHT 6656
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define BYD_PAD_RESOLUTION 111
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * Given the above dimensions, relative packets velocity is in multiples of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * 1 unit / 11 milliseconds. We use this dt to estimate distance traveled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define BYD_DT 11
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /* Time in jiffies used to timeout various touch events (64 ms) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #define BYD_TOUCH_TIMEOUT msecs_to_jiffies(64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* BYD commands reverse engineered from windows driver */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * Swipe gesture from off-pad to on-pad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * 0 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * 1 : enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define BYD_CMD_SET_OFFSCREEN_SWIPE 0x10cc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * Tap and drag delay time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * 0 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * 1 - 8 : least to most delay
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #define BYD_CMD_SET_TAP_DRAG_DELAY_TIME 0x10cf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * Physical buttons function mapping
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * 0 : enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * 4 : normal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * 5 : left button custom command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) * 6 : right button custom command
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * 8 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define BYD_CMD_SET_PHYSICAL_BUTTONS 0x10d0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * Absolute mode (1 byte X/Y resolution)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * 0 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * 2 : enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define BYD_CMD_SET_ABSOLUTE_MODE 0x10d1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * Two finger scrolling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * 1 : vertical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * 2 : horizontal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * 3 : vertical + horizontal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * 4 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define BYD_CMD_SET_TWO_FINGER_SCROLL 0x10d2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * Handedness
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * 1 : right handed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * 2 : left handed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define BYD_CMD_SET_HANDEDNESS 0x10d3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * Tap to click
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * 1 : enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * 2 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define BYD_CMD_SET_TAP 0x10d4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * Tap and drag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * 1 : tap and hold to drag
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * 2 : tap and hold to drag + lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * 3 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) #define BYD_CMD_SET_TAP_DRAG 0x10d5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * Touch sensitivity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * 1 - 7 : least to most sensitive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define BYD_CMD_SET_TOUCH_SENSITIVITY 0x10d6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * One finger scrolling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * 1 : vertical
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * 2 : horizontal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * 3 : vertical + horizontal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * 4 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define BYD_CMD_SET_ONE_FINGER_SCROLL 0x10d7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * One finger scrolling function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * 1 : free scrolling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * 2 : edge motion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * 3 : free scrolling + edge motion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * 4 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #define BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC 0x10d8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * Sliding speed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * 1 - 5 : slowest to fastest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #define BYD_CMD_SET_SLIDING_SPEED 0x10da
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * Edge motion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * 1 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * 2 : enable when dragging
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * 3 : enable when dragging and pointing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) #define BYD_CMD_SET_EDGE_MOTION 0x10db
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * Left edge region size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * 0 - 7 : smallest to largest width
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) #define BYD_CMD_SET_LEFT_EDGE_REGION 0x10dc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * Top edge region size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * 0 - 9 : smallest to largest height
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) #define BYD_CMD_SET_TOP_EDGE_REGION 0x10dd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * Disregard palm press as clicks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * 1 - 6 : smallest to largest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) #define BYD_CMD_SET_PALM_CHECK 0x10de
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) * Right edge region size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * 0 - 7 : smallest to largest width
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #define BYD_CMD_SET_RIGHT_EDGE_REGION 0x10df
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * Bottom edge region size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * 0 - 9 : smallest to largest height
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) #define BYD_CMD_SET_BOTTOM_EDGE_REGION 0x10e1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * Multitouch gestures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * 1 : enable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * 2 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) #define BYD_CMD_SET_MULTITOUCH 0x10e3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * Edge motion speed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * 0 : control with finger pressure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * 1 - 9 : slowest to fastest
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) #define BYD_CMD_SET_EDGE_MOTION_SPEED 0x10e4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) * Two finger scolling function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * 0 : free scrolling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * 1 : free scrolling (with momentum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * 2 : edge motion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * 3 : free scrolling (with momentum) + edge motion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * 4 : disable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) #define BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC 0x10e5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * The touchpad generates a mixture of absolute and relative packets, indicated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * by the the last byte of each packet being set to one of the following:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) #define BYD_PACKET_ABSOLUTE 0xf8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #define BYD_PACKET_RELATIVE 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /* Multitouch gesture packets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) #define BYD_PACKET_PINCH_IN 0xd8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) #define BYD_PACKET_PINCH_OUT 0x28
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) #define BYD_PACKET_ROTATE_CLOCKWISE 0x29
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) #define BYD_PACKET_ROTATE_ANTICLOCKWISE 0xd7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) #define BYD_PACKET_TWO_FINGER_SCROLL_RIGHT 0x2a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) #define BYD_PACKET_TWO_FINGER_SCROLL_DOWN 0x2b
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) #define BYD_PACKET_TWO_FINGER_SCROLL_UP 0xd5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) #define BYD_PACKET_TWO_FINGER_SCROLL_LEFT 0xd6
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) #define BYD_PACKET_THREE_FINGER_SWIPE_RIGHT 0x2c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) #define BYD_PACKET_THREE_FINGER_SWIPE_DOWN 0x2d
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) #define BYD_PACKET_THREE_FINGER_SWIPE_UP 0xd3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #define BYD_PACKET_THREE_FINGER_SWIPE_LEFT 0xd4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #define BYD_PACKET_FOUR_FINGER_DOWN 0x33
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #define BYD_PACKET_FOUR_FINGER_UP 0xcd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) #define BYD_PACKET_REGION_SCROLL_RIGHT 0x35
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) #define BYD_PACKET_REGION_SCROLL_DOWN 0x36
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) #define BYD_PACKET_REGION_SCROLL_UP 0xca
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) #define BYD_PACKET_REGION_SCROLL_LEFT 0xcb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) #define BYD_PACKET_RIGHT_CORNER_CLICK 0xd2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) #define BYD_PACKET_LEFT_CORNER_CLICK 0x2e
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) #define BYD_PACKET_LEFT_AND_RIGHT_CORNER_CLICK 0x2f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) #define BYD_PACKET_ONTO_PAD_SWIPE_RIGHT 0x37
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) #define BYD_PACKET_ONTO_PAD_SWIPE_DOWN 0x30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) #define BYD_PACKET_ONTO_PAD_SWIPE_UP 0xd0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #define BYD_PACKET_ONTO_PAD_SWIPE_LEFT 0xc9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct byd_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) struct timer_list timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct psmouse *psmouse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) s32 abs_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) s32 abs_y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) typeof(jiffies) last_touch_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) bool btn_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) bool btn_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) bool touch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static void byd_report_input(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct byd_data *priv = psmouse->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct input_dev *dev = psmouse->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) input_report_key(dev, BTN_TOUCH, priv->touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) input_report_key(dev, BTN_TOOL_FINGER, priv->touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) input_report_abs(dev, ABS_X, priv->abs_x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) input_report_abs(dev, ABS_Y, priv->abs_y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) input_report_key(dev, BTN_LEFT, priv->btn_left);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) input_report_key(dev, BTN_RIGHT, priv->btn_right);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) input_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static void byd_clear_touch(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) struct byd_data *priv = from_timer(priv, t, timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) struct psmouse *psmouse = priv->psmouse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) serio_pause_rx(psmouse->ps2dev.serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) priv->touch = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) byd_report_input(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) serio_continue_rx(psmouse->ps2dev.serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * Move cursor back to center of pad when we lose touch - this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * specifically improves user experience when moving cursor with one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * finger, and pressing a button with another.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) priv->abs_x = BYD_PAD_WIDTH / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) priv->abs_y = BYD_PAD_HEIGHT / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) static psmouse_ret_t byd_process_byte(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) struct byd_data *priv = psmouse->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) u8 *pkt = psmouse->packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) if (psmouse->pktcnt > 0 && !(pkt[0] & PS2_ALWAYS_1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) psmouse_warn(psmouse, "Always_1 bit not 1. pkt[0] = %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) pkt[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return PSMOUSE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) if (psmouse->pktcnt < psmouse->pktsize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) return PSMOUSE_GOOD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) /* Otherwise, a full packet has been received */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) switch (pkt[3]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) case BYD_PACKET_ABSOLUTE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /* Only use absolute packets for the start of movement. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (!priv->touch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) /* needed to detect tap */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) typeof(jiffies) tap_time =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) priv->last_touch_time + BYD_TOUCH_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) priv->touch = time_after(jiffies, tap_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) /* init abs position */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) priv->abs_x = pkt[1] * (BYD_PAD_WIDTH / 256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) priv->abs_y = (255 - pkt[2]) * (BYD_PAD_HEIGHT / 256);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) case BYD_PACKET_RELATIVE: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) /* Standard packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /* Sign-extend if a sign bit is set. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) u32 signx = pkt[0] & PS2_X_SIGN ? ~0xFF : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) u32 signy = pkt[0] & PS2_Y_SIGN ? ~0xFF : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) s32 dx = signx | (int) pkt[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) s32 dy = signy | (int) pkt[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /* Update position based on velocity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) priv->abs_x += dx * BYD_DT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) priv->abs_y -= dy * BYD_DT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) priv->touch = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) psmouse_warn(psmouse,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) "Unrecognized Z: pkt = %02x %02x %02x %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) psmouse->packet[0], psmouse->packet[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) psmouse->packet[2], psmouse->packet[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) return PSMOUSE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) priv->btn_left = pkt[0] & PS2_LEFT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) priv->btn_right = pkt[0] & PS2_RIGHT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) byd_report_input(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) /* Reset time since last touch. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (priv->touch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) priv->last_touch_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) mod_timer(&priv->timer, jiffies + BYD_TOUCH_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return PSMOUSE_FULL_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static int byd_reset_touchpad(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) struct ps2dev *ps2dev = &psmouse->ps2dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) u8 param[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) size_t i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) static const struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) u16 command;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) u8 arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) } seq[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) * Intellimouse initialization sequence, to get 4-byte instead
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) * of 3-byte packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) { PSMOUSE_CMD_SETRATE, 0xC8 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) { PSMOUSE_CMD_SETRATE, 0x64 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) { PSMOUSE_CMD_SETRATE, 0x50 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) { PSMOUSE_CMD_GETID, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) { PSMOUSE_CMD_ENABLE, 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) * BYD-specific initialization, which enables absolute mode and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) * (if desired), the touchpad's built-in gesture detection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) { 0x10E2, 0x00 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) { 0x10E0, 0x02 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) /* The touchpad should reply with 4 seemingly-random bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) { 0x14E0, 0x01 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) /* Pairs of parameters and values. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) { BYD_CMD_SET_HANDEDNESS, 0x01 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) { BYD_CMD_SET_PHYSICAL_BUTTONS, 0x04 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) { BYD_CMD_SET_TAP, 0x02 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) { BYD_CMD_SET_ONE_FINGER_SCROLL, 0x04 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) { BYD_CMD_SET_ONE_FINGER_SCROLL_FUNC, 0x04 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) { BYD_CMD_SET_EDGE_MOTION, 0x01 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) { BYD_CMD_SET_PALM_CHECK, 0x00 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) { BYD_CMD_SET_MULTITOUCH, 0x02 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) { BYD_CMD_SET_TWO_FINGER_SCROLL, 0x04 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) { BYD_CMD_SET_TWO_FINGER_SCROLL_FUNC, 0x04 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) { BYD_CMD_SET_LEFT_EDGE_REGION, 0x00 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) { BYD_CMD_SET_TOP_EDGE_REGION, 0x00 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) { BYD_CMD_SET_RIGHT_EDGE_REGION, 0x00 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) { BYD_CMD_SET_BOTTOM_EDGE_REGION, 0x00 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) { BYD_CMD_SET_ABSOLUTE_MODE, 0x02 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) /* Finalize initialization. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) { 0x10E0, 0x00 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) { 0x10E2, 0x01 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) for (i = 0; i < ARRAY_SIZE(seq); ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) memset(param, 0, sizeof(param));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) param[0] = seq[i].arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (ps2_command(ps2dev, param, seq[i].command))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) static int byd_reconnect(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) int retry = 0, error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) psmouse_dbg(psmouse, "Reconnect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) psmouse_reset(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) if (retry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) ssleep(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) error = byd_detect(psmouse, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) } while (error && ++retry < 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) psmouse_dbg(psmouse, "Reconnected after %d attempts\n", retry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) error = byd_reset_touchpad(psmouse);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) psmouse_err(psmouse, "Unable to initialize device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) static void byd_disconnect(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct byd_data *priv = psmouse->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) if (priv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) del_timer(&priv->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) kfree(psmouse->private);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) psmouse->private = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) int byd_detect(struct psmouse *psmouse, bool set_properties)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) struct ps2dev *ps2dev = &psmouse->ps2dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) u8 param[4] = {0x03, 0x00, 0x00, 0x00};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (ps2_command(ps2dev, param, PSMOUSE_CMD_SETRES))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if (param[1] != 0x03 || param[2] != 0x64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) psmouse_dbg(psmouse, "BYD touchpad detected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (set_properties) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) psmouse->vendor = "BYD";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) psmouse->name = "TouchPad";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) int byd_init(struct psmouse *psmouse)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) struct input_dev *dev = psmouse->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct byd_data *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) if (psmouse_reset(psmouse))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (byd_reset_touchpad(psmouse))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) priv = kzalloc(sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) priv->psmouse = psmouse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) timer_setup(&priv->timer, byd_clear_touch, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) psmouse->private = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) psmouse->disconnect = byd_disconnect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) psmouse->reconnect = byd_reconnect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) psmouse->protocol_handler = byd_process_byte;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) psmouse->pktsize = 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) psmouse->resync_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) __set_bit(INPUT_PROP_POINTER, dev->propbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) /* Touchpad */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) __set_bit(BTN_TOUCH, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) __set_bit(BTN_TOOL_FINGER, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) /* Buttons */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) __set_bit(BTN_LEFT, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) __set_bit(BTN_RIGHT, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) __clear_bit(BTN_MIDDLE, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) /* Absolute position */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) __set_bit(EV_ABS, dev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) input_set_abs_params(dev, ABS_X, 0, BYD_PAD_WIDTH, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) input_set_abs_params(dev, ABS_Y, 0, BYD_PAD_HEIGHT, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) input_abs_set_res(dev, ABS_X, BYD_PAD_RESOLUTION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) input_abs_set_res(dev, ABS_Y, BYD_PAD_RESOLUTION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) /* No relative support */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) __clear_bit(EV_REL, dev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) __clear_bit(REL_X, dev->relbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) __clear_bit(REL_Y, dev->relbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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