^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Wacom W8001 penabled serial touchscreen driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2008 Jaya Kumar
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (c) 2010 Red Hat, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (c) 2010 - 2011 Ping Cheng, Wacom. <pingc@wacom.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * License. See the file COPYING in the main directory of this archive for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Layout based on Elo serial touchscreen driver by Vojtech Pavlik
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/input/mt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/serio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define DRIVER_DESC "Wacom W8001 serial touchscreen driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) MODULE_AUTHOR("Jaya Kumar <jayakumar.lkml@gmail.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #define W8001_MAX_PHYS 42
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define W8001_MAX_LENGTH 13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define W8001_LEAD_MASK 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define W8001_LEAD_BYTE 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define W8001_TAB_MASK 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define W8001_TAB_BYTE 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /* set in first byte of touch data packets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define W8001_TOUCH_MASK (0x10 | W8001_LEAD_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define W8001_TOUCH_BYTE (0x10 | W8001_LEAD_BYTE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define W8001_QUERY_PACKET 0x20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define W8001_CMD_STOP '0'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define W8001_CMD_START '1'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define W8001_CMD_QUERY '*'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define W8001_CMD_TOUCHQUERY '%'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* length of data packets in bytes, depends on device. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define W8001_PKTLEN_TOUCH93 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define W8001_PKTLEN_TOUCH9A 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #define W8001_PKTLEN_TPCPEN 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define W8001_PKTLEN_TPCCTL 11 /* control packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #define W8001_PKTLEN_TOUCH2FG 13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) /* resolution in points/mm */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #define W8001_PEN_RESOLUTION 100
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define W8001_TOUCH_RESOLUTION 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) struct w8001_coord {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) u8 rdy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u8 tsw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u8 f1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) u8 f2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) u16 x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u16 y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u16 pen_pressure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) u8 tilt_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u8 tilt_y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* touch query reply packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct w8001_touch_query {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) u16 x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) u16 y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) u8 panel_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) u8 capacity_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) u8 sensor_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Per-touchscreen data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) struct w8001 {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct input_dev *pen_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct input_dev *touch_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct serio *serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct completion cmd_done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) unsigned char response_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned char response[W8001_MAX_LENGTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) unsigned char data[W8001_MAX_LENGTH];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) char phys[W8001_MAX_PHYS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) unsigned int pktlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) u16 max_touch_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) u16 max_touch_y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) u16 max_pen_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) u16 max_pen_y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) char pen_name[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) char touch_name[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) int open_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct mutex mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static void parse_pen_data(u8 *data, struct w8001_coord *coord)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) memset(coord, 0, sizeof(*coord));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) coord->rdy = data[0] & 0x20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) coord->tsw = data[0] & 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) coord->f1 = data[0] & 0x02;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) coord->f2 = data[0] & 0x04;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) coord->x = (data[1] & 0x7F) << 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) coord->x |= (data[2] & 0x7F) << 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) coord->x |= (data[6] & 0x60) >> 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) coord->y = (data[3] & 0x7F) << 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) coord->y |= (data[4] & 0x7F) << 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) coord->y |= (data[6] & 0x18) >> 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) coord->pen_pressure = data[5] & 0x7F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) coord->pen_pressure |= (data[6] & 0x07) << 7 ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) coord->tilt_x = data[7] & 0x7F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) coord->tilt_y = data[8] & 0x7F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static void parse_single_touch(u8 *data, struct w8001_coord *coord)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) coord->x = (data[1] << 7) | data[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) coord->y = (data[3] << 7) | data[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) coord->tsw = data[0] & 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static void scale_touch_coordinates(struct w8001 *w8001,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) unsigned int *x, unsigned int *y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) if (w8001->max_pen_x && w8001->max_touch_x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) *x = *x * w8001->max_pen_x / w8001->max_touch_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (w8001->max_pen_y && w8001->max_touch_y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) *y = *y * w8001->max_pen_y / w8001->max_touch_y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static void parse_multi_touch(struct w8001 *w8001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct input_dev *dev = w8001->touch_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) unsigned char *data = w8001->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) unsigned int x, y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) int count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) for (i = 0; i < 2; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) bool touch = data[0] & (1 << i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) input_mt_slot(dev, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) input_mt_report_slot_state(dev, MT_TOOL_FINGER, touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (touch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) x = (data[6 * i + 1] << 7) | data[6 * i + 2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) y = (data[6 * i + 3] << 7) | data[6 * i + 4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /* data[5,6] and [11,12] is finger capacity */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) /* scale to pen maximum */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) scale_touch_coordinates(w8001, &x, &y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) input_report_abs(dev, ABS_MT_POSITION_X, x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) input_report_abs(dev, ABS_MT_POSITION_Y, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /* emulate single touch events when stylus is out of proximity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * This is to make single touch backward support consistent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * across all Wacom single touch devices.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (w8001->type != BTN_TOOL_PEN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) w8001->type != BTN_TOOL_RUBBER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) w8001->type = count == 1 ? BTN_TOOL_FINGER : KEY_RESERVED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) input_mt_report_pointer_emulation(dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) input_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static void parse_touchquery(u8 *data, struct w8001_touch_query *query)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) memset(query, 0, sizeof(*query));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) query->panel_res = data[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) query->sensor_id = data[2] & 0x7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) query->capacity_res = data[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) query->x = data[3] << 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) query->x |= data[4] << 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) query->x |= (data[2] >> 5) & 0x3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) query->y = data[5] << 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) query->y |= data[6] << 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) query->y |= (data[2] >> 3) & 0x3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /* Early days' single-finger touch models need the following defaults */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (!query->x && !query->y) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) query->x = 1024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) query->y = 1024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (query->panel_res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) query->x = query->y = (1 << query->panel_res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) query->panel_res = W8001_TOUCH_RESOLUTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct input_dev *dev = w8001->pen_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * We have 1 bit for proximity (rdy) and 3 bits for tip, side,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * side2/eraser. If rdy && f2 are set, this can be either pen + side2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * or eraser. Assume:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * - if dev is already in proximity and f2 is toggled → pen + side2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * - if dev comes into proximity with f2 set → eraser
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * If f2 disappears after assuming eraser, fake proximity out for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * eraser and in for pen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) switch (w8001->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) case BTN_TOOL_RUBBER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) if (!coord->f2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) input_report_abs(dev, ABS_PRESSURE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) input_report_key(dev, BTN_TOUCH, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) input_report_key(dev, BTN_STYLUS, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) input_report_key(dev, BTN_STYLUS2, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) input_report_key(dev, BTN_TOOL_RUBBER, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) input_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) w8001->type = BTN_TOOL_PEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) case BTN_TOOL_FINGER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) case KEY_RESERVED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) w8001->type = coord->f2 ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) input_report_key(dev, BTN_STYLUS2, coord->f2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) input_report_abs(dev, ABS_X, coord->x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) input_report_abs(dev, ABS_Y, coord->y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) input_report_abs(dev, ABS_PRESSURE, coord->pen_pressure);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) input_report_key(dev, BTN_TOUCH, coord->tsw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) input_report_key(dev, BTN_STYLUS, coord->f1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) input_report_key(dev, w8001->type, coord->rdy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) input_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (!coord->rdy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) w8001->type = KEY_RESERVED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) static void report_single_touch(struct w8001 *w8001, struct w8001_coord *coord)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct input_dev *dev = w8001->touch_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) unsigned int x = coord->x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) unsigned int y = coord->y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) /* scale to pen maximum */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) scale_touch_coordinates(w8001, &x, &y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) input_report_abs(dev, ABS_X, x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) input_report_abs(dev, ABS_Y, y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) input_report_key(dev, BTN_TOUCH, coord->tsw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) input_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) w8001->type = coord->tsw ? BTN_TOOL_FINGER : KEY_RESERVED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) static irqreturn_t w8001_interrupt(struct serio *serio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) unsigned char data, unsigned int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) struct w8001 *w8001 = serio_get_drvdata(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) struct w8001_coord coord;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) unsigned char tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) w8001->data[w8001->idx] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) switch (w8001->idx++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if ((data & W8001_LEAD_MASK) != W8001_LEAD_BYTE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) pr_debug("w8001: unsynchronized data: 0x%02x\n", data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) w8001->idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) case W8001_PKTLEN_TOUCH93 - 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) case W8001_PKTLEN_TOUCH9A - 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) tmp = w8001->data[0] & W8001_TOUCH_BYTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (tmp != W8001_TOUCH_BYTE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) if (w8001->pktlen == w8001->idx) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) w8001->idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) if (w8001->type != BTN_TOOL_PEN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) w8001->type != BTN_TOOL_RUBBER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) parse_single_touch(w8001->data, &coord);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) report_single_touch(w8001, &coord);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) /* Pen coordinates packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) case W8001_PKTLEN_TPCPEN - 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) tmp = w8001->data[0] & W8001_TAB_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (unlikely(tmp == W8001_TAB_BYTE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) tmp = w8001->data[0] & W8001_TOUCH_BYTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) if (tmp == W8001_TOUCH_BYTE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) w8001->idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) parse_pen_data(w8001->data, &coord);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) report_pen_events(w8001, &coord);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /* control packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) case W8001_PKTLEN_TPCCTL - 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) tmp = w8001->data[0] & W8001_TOUCH_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (tmp == W8001_TOUCH_BYTE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) w8001->idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) memcpy(w8001->response, w8001->data, W8001_MAX_LENGTH);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) w8001->response_type = W8001_QUERY_PACKET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) complete(&w8001->cmd_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) /* 2 finger touch packet */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) case W8001_PKTLEN_TOUCH2FG - 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) w8001->idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) parse_multi_touch(w8001);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) * ThinkPad X60 Tablet PC (pen only device) sometimes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) * sends invalid data packets that are larger than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) * W8001_PKTLEN_TPCPEN. Let's start over again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (!w8001->touch_dev && w8001->idx > W8001_PKTLEN_TPCPEN - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) w8001->idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) static int w8001_command(struct w8001 *w8001, unsigned char command,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) bool wait_response)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) w8001->response_type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) init_completion(&w8001->cmd_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) rc = serio_write(w8001->serio, command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (rc == 0 && wait_response) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) wait_for_completion_timeout(&w8001->cmd_done, HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) if (w8001->response_type != W8001_QUERY_PACKET)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) rc = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) static int w8001_open(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) struct w8001 *w8001 = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) err = mutex_lock_interruptible(&w8001->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (w8001->open_count++ == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) err = w8001_command(w8001, W8001_CMD_START, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) w8001->open_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) mutex_unlock(&w8001->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) static void w8001_close(struct input_dev *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) struct w8001 *w8001 = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) mutex_lock(&w8001->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) if (--w8001->open_count == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) w8001_command(w8001, W8001_CMD_STOP, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) mutex_unlock(&w8001->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static int w8001_detect(struct w8001 *w8001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) error = w8001_command(w8001, W8001_CMD_STOP, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) msleep(250); /* wait 250ms before querying the device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) static int w8001_setup_pen(struct w8001 *w8001, char *basename,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) size_t basename_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) struct input_dev *dev = w8001->pen_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) struct w8001_coord coord;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) /* penabled? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) error = w8001_command(w8001, W8001_CMD_QUERY, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) __set_bit(EV_KEY, dev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) __set_bit(EV_ABS, dev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) __set_bit(BTN_TOUCH, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) __set_bit(BTN_TOOL_PEN, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) __set_bit(BTN_TOOL_RUBBER, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) __set_bit(BTN_STYLUS, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) __set_bit(BTN_STYLUS2, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) __set_bit(INPUT_PROP_DIRECT, dev->propbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) parse_pen_data(w8001->response, &coord);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) w8001->max_pen_x = coord.x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) w8001->max_pen_y = coord.y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) input_abs_set_res(dev, ABS_X, W8001_PEN_RESOLUTION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) input_abs_set_res(dev, ABS_Y, W8001_PEN_RESOLUTION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (coord.tilt_x && coord.tilt_y) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) w8001->id = 0x90;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) strlcat(basename, " Penabled", basename_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) static int w8001_setup_touch(struct w8001 *w8001, char *basename,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) size_t basename_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) struct input_dev *dev = w8001->touch_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct w8001_touch_query touch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) /* Touch enabled? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) error = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * Some non-touch devices may reply to the touch query. But their
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * second byte is empty, which indicates touch is not supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) if (!w8001->response[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) __set_bit(EV_KEY, dev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) __set_bit(EV_ABS, dev->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) __set_bit(BTN_TOUCH, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) __set_bit(INPUT_PROP_DIRECT, dev->propbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) parse_touchquery(w8001->response, &touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) w8001->max_touch_x = touch.x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) w8001->max_touch_y = touch.y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) if (w8001->max_pen_x && w8001->max_pen_y) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) /* if pen is supported scale to pen maximum */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) touch.x = w8001->max_pen_x;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) touch.y = w8001->max_pen_y;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) touch.panel_res = W8001_PEN_RESOLUTION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) input_set_abs_params(dev, ABS_X, 0, touch.x, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) input_set_abs_params(dev, ABS_Y, 0, touch.y, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) input_abs_set_res(dev, ABS_X, touch.panel_res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) input_abs_set_res(dev, ABS_Y, touch.panel_res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) switch (touch.sensor_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) w8001->pktlen = W8001_PKTLEN_TOUCH93;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) w8001->id = 0x93;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) strlcat(basename, " 1FG", basename_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) case 3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) case 4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) w8001->pktlen = W8001_PKTLEN_TOUCH9A;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) strlcat(basename, " 1FG", basename_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) w8001->id = 0x9a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) case 5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) w8001->pktlen = W8001_PKTLEN_TOUCH2FG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) __set_bit(BTN_TOOL_DOUBLETAP, dev->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) error = input_mt_init_slots(dev, 2, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) dev_err(&w8001->serio->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) "failed to initialize MT slots: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) input_set_abs_params(dev, ABS_MT_POSITION_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) 0, touch.x, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) input_set_abs_params(dev, ABS_MT_POSITION_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) 0, touch.y, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) input_set_abs_params(dev, ABS_MT_TOOL_TYPE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) 0, MT_TOOL_MAX, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) input_abs_set_res(dev, ABS_MT_POSITION_X, touch.panel_res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) input_abs_set_res(dev, ABS_MT_POSITION_Y, touch.panel_res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) strlcat(basename, " 2FG", basename_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (w8001->max_pen_x && w8001->max_pen_y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) w8001->id = 0xE3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) w8001->id = 0xE2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) strlcat(basename, " Touchscreen", basename_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) static void w8001_set_devdata(struct input_dev *dev, struct w8001 *w8001,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct serio *serio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) dev->phys = w8001->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) dev->id.bustype = BUS_RS232;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) dev->id.product = w8001->id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) dev->id.vendor = 0x056a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) dev->id.version = 0x0100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) dev->open = w8001_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) dev->close = w8001_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) dev->dev.parent = &serio->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) input_set_drvdata(dev, w8001);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) * w8001_disconnect() is the opposite of w8001_connect()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) static void w8001_disconnect(struct serio *serio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) struct w8001 *w8001 = serio_get_drvdata(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) serio_close(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) if (w8001->pen_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) input_unregister_device(w8001->pen_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) if (w8001->touch_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) input_unregister_device(w8001->touch_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) kfree(w8001);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) serio_set_drvdata(serio, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) * w8001_connect() is the routine that is called when someone adds a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * new serio device that supports the w8001 protocol and registers it as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) * an input device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) static int w8001_connect(struct serio *serio, struct serio_driver *drv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) struct w8001 *w8001;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) struct input_dev *input_dev_pen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) struct input_dev *input_dev_touch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) char basename[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) int err, err_pen, err_touch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) w8001 = kzalloc(sizeof(struct w8001), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) input_dev_pen = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) input_dev_touch = input_allocate_device();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) if (!w8001 || !input_dev_pen || !input_dev_touch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) goto fail1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) w8001->serio = serio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) w8001->pen_dev = input_dev_pen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) w8001->touch_dev = input_dev_touch;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) mutex_init(&w8001->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) init_completion(&w8001->cmd_done);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) serio_set_drvdata(serio, w8001);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) err = serio_open(serio, drv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) goto fail2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) err = w8001_detect(w8001);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) goto fail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) /* For backwards-compatibility we compose the basename based on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) * capabilities and then just append the tool type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) strlcpy(basename, "Wacom Serial", sizeof(basename));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) err_pen = w8001_setup_pen(w8001, basename, sizeof(basename));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) err_touch = w8001_setup_touch(w8001, basename, sizeof(basename));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) if (err_pen && err_touch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) err = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) goto fail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (!err_pen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) strlcpy(w8001->pen_name, basename, sizeof(w8001->pen_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) strlcat(w8001->pen_name, " Pen", sizeof(w8001->pen_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) input_dev_pen->name = w8001->pen_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) w8001_set_devdata(input_dev_pen, w8001, serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) err = input_register_device(w8001->pen_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) goto fail3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) input_free_device(input_dev_pen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) input_dev_pen = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) w8001->pen_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) if (!err_touch) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) strlcpy(w8001->touch_name, basename, sizeof(w8001->touch_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) strlcat(w8001->touch_name, " Finger",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) sizeof(w8001->touch_name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) input_dev_touch->name = w8001->touch_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) w8001_set_devdata(input_dev_touch, w8001, serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) err = input_register_device(w8001->touch_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) goto fail4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) input_free_device(input_dev_touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) input_dev_touch = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) w8001->touch_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) fail4:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) if (w8001->pen_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) input_unregister_device(w8001->pen_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) fail3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) serio_close(serio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) fail2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) serio_set_drvdata(serio, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) fail1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) input_free_device(input_dev_pen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) input_free_device(input_dev_touch);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) kfree(w8001);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) static const struct serio_device_id w8001_serio_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) .type = SERIO_RS232,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) .proto = SERIO_W8001,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) .id = SERIO_ANY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) .extra = SERIO_ANY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) { 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) MODULE_DEVICE_TABLE(serio, w8001_serio_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) static struct serio_driver w8001_drv = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) .name = "w8001",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) .description = DRIVER_DESC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) .id_table = w8001_serio_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) .interrupt = w8001_interrupt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) .connect = w8001_connect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) .disconnect = w8001_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) module_serio_driver(w8001_drv);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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