/* * Wacom W8001 penabled serial touchscreen driver * * Copyright (c) 2008 Jaya Kumar * Copyright (c) 2010 Red Hat, Inc. * Copyright (c) 2010 - 2011 Ping Cheng, Wacom. <[email protected]> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file COPYING in the main directory of this archive for * more details. * * Layout based on Elo serial touchscreen driver by Vojtech Pavlik */ #include <linux/errno.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/input/mt.h> #include <linux/serio.h> #include <linux/ctype.h> #include <linux/delay.h> #define DRIVER_DESC … MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …; #define W8001_MAX_PHYS … #define W8001_MAX_LENGTH … #define W8001_LEAD_MASK … #define W8001_LEAD_BYTE … #define W8001_TAB_MASK … #define W8001_TAB_BYTE … /* set in first byte of touch data packets */ #define W8001_TOUCH_MASK … #define W8001_TOUCH_BYTE … #define W8001_QUERY_PACKET … #define W8001_CMD_STOP … #define W8001_CMD_START … #define W8001_CMD_QUERY … #define W8001_CMD_TOUCHQUERY … /* length of data packets in bytes, depends on device. */ #define W8001_PKTLEN_TOUCH93 … #define W8001_PKTLEN_TOUCH9A … #define W8001_PKTLEN_TPCPEN … #define W8001_PKTLEN_TPCCTL … #define W8001_PKTLEN_TOUCH2FG … /* resolution in points/mm */ #define W8001_PEN_RESOLUTION … #define W8001_TOUCH_RESOLUTION … struct w8001_coord { … }; /* touch query reply packet */ struct w8001_touch_query { … }; /* * Per-touchscreen data. */ struct w8001 { … }; static void parse_pen_data(u8 *data, struct w8001_coord *coord) { … } static void parse_single_touch(u8 *data, struct w8001_coord *coord) { … } static void scale_touch_coordinates(struct w8001 *w8001, unsigned int *x, unsigned int *y) { … } static void parse_multi_touch(struct w8001 *w8001) { … } static void parse_touchquery(u8 *data, struct w8001_touch_query *query) { … } static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord) { … } static void report_single_touch(struct w8001 *w8001, struct w8001_coord *coord) { … } static irqreturn_t w8001_interrupt(struct serio *serio, unsigned char data, unsigned int flags) { … } static int w8001_command(struct w8001 *w8001, unsigned char command, bool wait_response) { … } static int w8001_open(struct input_dev *dev) { … } static void w8001_close(struct input_dev *dev) { … } static int w8001_detect(struct w8001 *w8001) { … } static int w8001_setup_pen(struct w8001 *w8001, char *basename, size_t basename_sz) { … } static int w8001_setup_touch(struct w8001 *w8001, char *basename, size_t basename_sz) { … } static void w8001_set_devdata(struct input_dev *dev, struct w8001 *w8001, struct serio *serio) { … } /* * w8001_disconnect() is the opposite of w8001_connect() */ static void w8001_disconnect(struct serio *serio) { … } /* * w8001_connect() is the routine that is called when someone adds a * new serio device that supports the w8001 protocol and registers it as * an input device. */ static int w8001_connect(struct serio *serio, struct serio_driver *drv) { … } static const struct serio_device_id w8001_serio_ids[] = …; MODULE_DEVICE_TABLE(serio, w8001_serio_ids); static struct serio_driver w8001_drv = …; module_serio_driver(…) …;
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