linux-imx

/*

 *  Copyright (c) 2013 Andrew Duggan <aduggan@synaptics.com>

 *  Copyright (c) 2013 Synaptics Incorporated

 *  Copyright (c) 2014 Benjamin Tissoires <benjamin.tissoires@gmail.com>

 *  Copyright (c) 2014 Red Hat, Inc

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License as published by the Free

 * Software Foundation; either version 2 of the License, or (at your option)

 * any later version.

 */

​

#include <linux/kernel.h>

#include <linux/hid.h>

#include <linux/input.h>

#include <linux/input/mt.h>

#include <linux/irq.h>

#include <linux/irqdomain.h>

#include <linux/module.h>

#include <linux/pm.h>

#include <linux/slab.h>

#include <linux/wait.h>

#include <linux/sched.h>

#include <linux/rmi.h>

#include "hid-ids.h"

​

#define RMI_MOUSE_REPORT_ID     0x01 /* Mouse emulation Report */

#define RMI_WRITE_REPORT_ID     0x09 /* Output Report */

#define RMI_READ_ADDR_REPORT_ID     0x0a /* Output Report */

#define RMI_READ_DATA_REPORT_ID     0x0b /* Input Report */

#define RMI_ATTN_REPORT_ID      0x0c /* Input Report */

#define RMI_SET_RMI_MODE_REPORT_ID  0x0f /* Feature Report */

​

/* flags */

#define RMI_READ_REQUEST_PENDING    0

#define RMI_READ_DATA_PENDING       1

#define RMI_STARTED         2

​

/* device flags */

#define RMI_DEVICE          BIT(0)

#define RMI_DEVICE_HAS_PHYS_BUTTONS BIT(1)

​

/*

 * retrieve the ctrl registers

 * the ctrl register has a size of 20 but a fw bug split it into 16 + 4,

 * and there is no way to know if the first 20 bytes are here or not.

 * We use only the first 12 bytes, so get only them.

 */

#define RMI_F11_CTRL_REG_COUNT      12

​

enum rmi_mode_type {

    RMI_MODE_OFF            = 0,

    RMI_MODE_ATTN_REPORTS       = 1,

    RMI_MODE_NO_PACKED_ATTN_REPORTS = 2,

};

​

/**

 * struct rmi_data - stores information for hid communication

 *

 * @page_mutex: Locks current page to avoid changing pages in unexpected ways.

 * @page: Keeps track of the current virtual page

 * @xport: transport device to be registered with the RMI4 core.

 *