linux/drivers/input/mouse/cypress_ps2.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Cypress Trackpad PS/2 mouse driver
 *
 * Copyright (c) 2012 Cypress Semiconductor Corporation.
 *
 * Author:
 *   Dudley Du <[email protected]>
 *
 * Additional contributors include:
 *   Kamal Mostafa <[email protected]>
 *   Kyle Fazzari <[email protected]>
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/sched.h>
#include <linux/wait.h>

#include "cypress_ps2.h"

#undef CYTP_DEBUG_VERBOSE  /* define this and DEBUG for more verbose dump */

static void cypress_set_packet_size(struct psmouse *psmouse, unsigned int n)
{ … }

static const u8 cytp_rate[] = …;
static const u8 cytp_resolution[] = …;

static int cypress_ps2_sendbyte(struct psmouse *psmouse, u8 cmd)
{ … }

static int cypress_ps2_ext_cmd(struct psmouse *psmouse, u8 prefix, u8 nibble)
{ … }

static bool cypress_verify_cmd_state(struct psmouse *psmouse, u8 cmd, u8* param)
{ … }

static int cypress_send_ext_cmd(struct psmouse *psmouse, u8 cmd, u8 *param)
{ … }

int cypress_detect(struct psmouse *psmouse, bool set_properties)
{ … }

static int cypress_read_fw_version(struct psmouse *psmouse)
{ … }

static int cypress_read_tp_metrics(struct psmouse *psmouse)
{ … }

static int cypress_query_hardware(struct psmouse *psmouse)
{ … }

static int cypress_set_absolute_mode(struct psmouse *psmouse)
{ … }

/*
 * Reset trackpad device.
 * This is also the default mode when trackpad powered on.
 */
static void cypress_reset(struct psmouse *psmouse)
{ … }

static int cypress_set_input_params(struct input_dev *input,
				    struct cytp_data *cytp)
{ … }

static int cypress_get_finger_count(u8 header_byte)
{ … }


static int cypress_parse_packet(struct psmouse *psmouse,
				struct cytp_data *cytp,
				struct cytp_report_data *report_data)
{ … }

static void cypress_process_packet(struct psmouse *psmouse, bool zero_pkt)
{ … }

static psmouse_ret_t cypress_validate_byte(struct psmouse *psmouse)
{ … }

static psmouse_ret_t cypress_protocol_handler(struct psmouse *psmouse)
{ … }

static void cypress_set_rate(struct psmouse *psmouse, unsigned int rate)
{ … }

static void cypress_disconnect(struct psmouse *psmouse)
{ … }

static int cypress_reconnect(struct psmouse *psmouse)
{ … }

int cypress_init(struct psmouse *psmouse)
{ … }