source: mainline/uspace/drv/usbhid/usbhid.h@ 60c0573

/*
 * Copyright (c) 2011 Lubos Slovak
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup drvusbhid
 * @{
 */
/** @file
 * USB HID driver API.
 */

#ifndef USB_USBHID_H_
#define USB_USBHID_H_

#include <stdint.h>

#include <usb/classes/hidparser.h>
#include <ddf/driver.h>
#include <usb/pipes.h>
#include <usb/devdrv.h>
#include <usb/classes/hid.h>

struct usb_hid_dev;

typedef int (*usb_hid_driver_init_t)(struct usb_hid_dev *);
typedef void (*usb_hid_driver_deinit_t)(struct usb_hid_dev *);
typedef bool (*usb_hid_driver_poll)(struct usb_hid_dev *, uint8_t *, size_t);
typedef int (*usb_hid_driver_poll_ended)(struct usb_hid_dev *, bool reason);

// TODO: add function and class name??
typedef struct usb_hid_subdriver {      
        /** Function to be called when initializing HID device. */
        usb_hid_driver_init_t init;
        /** Function to be called when destroying the HID device structure. */
        usb_hid_driver_deinit_t deinit;
        /** Function to be called when data arrives from the device. */
        usb_hid_driver_poll poll;
        /** Function to be called when polling ends. */
        usb_hid_driver_poll_ended poll_end;
} usb_hid_subdriver_t;

/*----------------------------------------------------------------------------*/
/**
 * Structure for holding general HID device data.
 */
typedef struct usb_hid_dev {
        /** Structure holding generic USB device information. */
        usb_device_t *usb_dev;
        
        /** @todo What is this actually? */
        ddf_dev_ops_t ops;
        
        /** Index of the polling pipe in usb_hid_endpoints array. */
        int poll_pipe_index;
        
        /** Subdrivers. */
        usb_hid_subdriver_t *subdrivers;
        
        /** Number of subdrivers. */
        int subdriver_count;
        
        /** Report descriptor. */
        uint8_t *report_desc;

        /** Report descriptor size. */
        size_t report_desc_size;
        
        /** HID Report parser. */
        usb_hid_report_parser_t *parser;
        
        /** Arbitrary data (e.g. a special structure for handling keyboard). */
        void *data;
} usb_hid_dev_t;

/*----------------------------------------------------------------------------*/

enum {
        USB_HID_KBD_POLL_EP_NO = 0,
        USB_HID_MOUSE_POLL_EP_NO = 1,
        USB_HID_GENERIC_POLL_EP_NO = 2,
        USB_HID_POLL_EP_COUNT = 3
};

usb_endpoint_description_t *usb_hid_endpoints[USB_HID_POLL_EP_COUNT + 1];

/*----------------------------------------------------------------------------*/

usb_hid_dev_t *usb_hid_new(void);

int usb_hid_init(usb_hid_dev_t *hid_dev, usb_device_t *dev);

bool usb_hid_polling_callback(usb_device_t *dev, uint8_t *buffer, 
    size_t buffer_size, void *arg);

void usb_hid_polling_ended_callback(usb_device_t *dev, bool reason, 
     void *arg);

const char *usb_hid_get_function_name(const usb_hid_dev_t *hid_dev);

const char *usb_hid_get_class_name(const usb_hid_dev_t *hid_dev);

void usb_hid_free(usb_hid_dev_t **hid_dev);

#endif /* USB_USBHID_H_ */

/**
 * @}
 */