hidreq.c

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/*
 * 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.
 */

#include <stdint.h>
#include <errno.h>
#include <str_error.h>

#include <usb/hid/hid.h>
#include <usb/debug.h>
#include <usb/dev/request.h>
#include <usb/dev/pipes.h>

#include <usb/hid/request.h>

/*----------------------------------------------------------------------------*/
int usbhid_req_set_report(usb_pipe_t *ctrl_pipe, int iface_no,
    usb_hid_report_type_t type, uint8_t *buffer, size_t buf_size)
{
        if (ctrl_pipe == NULL) {
                usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
                return EINVAL;
        }
        
        if (iface_no < 0) {
                usb_log_warning("usbhid_req_set_report(): no interface given."
                    "\n");
                return EINVAL;
        }
        
        /*
         * No need for checking other parameters, as they are checked in
         * the called function (usb_control_request_set()).
         */
        
        int rc;
        
        uint16_t value = 0;
        value |= (type << 8);

        usb_log_debug("Sending Set Report request to the device.\n");
        
        rc = usb_control_request_set(ctrl_pipe, 
            USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
            USB_HIDREQ_SET_REPORT, value, iface_no, buffer, buf_size);

        if (rc != EOK) {
                usb_log_warning("Error sending Set Report request to the "
                    "device: %s.\n", str_error(rc));
                return rc;
        }
        
        return EOK;
}

/*----------------------------------------------------------------------------*/
int usbhid_req_set_protocol(usb_pipe_t *ctrl_pipe, int iface_no,
    usb_hid_protocol_t protocol)
{
        if (ctrl_pipe == NULL) {
                usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
                return EINVAL;
        }
        
        if (iface_no < 0) {
                usb_log_warning("usbhid_req_set_report(): no interface given."
                    "\n");
                return EINVAL;
        }
        
        /*
         * No need for checking other parameters, as they are checked in
         * the called function (usb_control_request_set()).
         */
        
        int rc;

        usb_log_debug("Sending Set Protocol request to the device ("
            "protocol: %d, iface: %d).\n", protocol, iface_no);
        
        rc = usb_control_request_set(ctrl_pipe, 
            USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
            USB_HIDREQ_SET_PROTOCOL, protocol, iface_no, NULL, 0);

        if (rc != EOK) {
                usb_log_warning("Error sending Set Protocol request to the "
                    "device: %s.\n", str_error(rc));
                return rc;
        }
        
        return EOK;
}

/*----------------------------------------------------------------------------*/
int usbhid_req_set_idle(usb_pipe_t *ctrl_pipe, int iface_no, uint8_t duration)
{
        if (ctrl_pipe == NULL) {
                usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
                return EINVAL;
        }
        
        if (iface_no < 0) {
                usb_log_warning("usbhid_req_set_report(): no interface given."
                    "\n");
                return EINVAL;
        }
        
        /*
         * No need for checking other parameters, as they are checked in
         * the called function (usb_control_request_set()).
         */
        
        int rc;

        usb_log_debug("Sending Set Idle request to the device ("
            "duration: %u, iface: %d).\n", duration, iface_no);
        
        uint16_t value = duration << 8;
        
        rc = usb_control_request_set(ctrl_pipe, 
            USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
            USB_HIDREQ_SET_IDLE, value, iface_no, NULL, 0);

        if (rc != EOK) {
                usb_log_warning("Error sending Set Idle request to the device: "
                    "%s.\n", str_error(rc));
                return rc;
        }
        
        return EOK;
}

/*----------------------------------------------------------------------------*/
int usbhid_req_get_report(usb_pipe_t *ctrl_pipe, int iface_no, 
    usb_hid_report_type_t type, uint8_t *buffer, size_t buf_size, 
    size_t *actual_size)
{
        if (ctrl_pipe == NULL) {
                usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
                return EINVAL;
        }
        
        if (iface_no < 0) {
                usb_log_warning("usbhid_req_set_report(): no interface given."
                    "\n");
                return EINVAL;
        }
        
        /*
         * No need for checking other parameters, as they are checked in
         * the called function (usb_control_request_set()).
         */
        
        int rc;

        uint16_t value = 0;
        value |= (type << 8);
        
        usb_log_debug("Sending Get Report request to the device.\n");
        
        rc = usb_control_request_get(ctrl_pipe, 
            USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
            USB_HIDREQ_GET_REPORT, value, iface_no, buffer, buf_size,
            actual_size);

        if (rc != EOK) {
                usb_log_warning("Error sending Get Report request to the device: "
                    "%s.\n", str_error(rc));
                return rc;
        }
        
        return EOK;
}

/*----------------------------------------------------------------------------*/
int usbhid_req_get_protocol(usb_pipe_t *ctrl_pipe, int iface_no, 
    usb_hid_protocol_t *protocol)
{
        if (ctrl_pipe == NULL) {
                usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
                return EINVAL;
        }
        
        if (iface_no < 0) {
                usb_log_warning("usbhid_req_set_report(): no interface given."
                    "\n");
                return EINVAL;
        }
        
        /*
         * No need for checking other parameters, as they are checked in
         * the called function (usb_control_request_set()).
         */
        
        int rc; 

        usb_log_debug("Sending Get Protocol request to the device ("
            "iface: %d).\n", iface_no);
        
        uint8_t buffer[1];
        size_t actual_size = 0;
        
        rc = usb_control_request_get(ctrl_pipe, 
            USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
            USB_HIDREQ_GET_PROTOCOL, 0, iface_no, buffer, 1, &actual_size);

        if (rc != EOK) {
                usb_log_warning("Error sending Get Protocol request to the "
                    "device: %s.\n", str_error(rc));
                return rc;
        }
        
        if (actual_size != 1) {
                usb_log_warning("Wrong data size: %zu, expected: 1.\n",
                        actual_size);
                return ELIMIT;
        }
        
        *protocol = buffer[0];
        
        return EOK;
}

/*----------------------------------------------------------------------------*/
int usbhid_req_get_idle(usb_pipe_t *ctrl_pipe, int iface_no, uint8_t *duration)
{
        if (ctrl_pipe == NULL) {
                usb_log_warning("usbhid_req_set_report(): no pipe given.\n");
                return EINVAL;
        }
        
        if (iface_no < 0) {
                usb_log_warning("usbhid_req_set_report(): no interface given."
                    "\n");
                return EINVAL;
        }
        
        /*
         * No need for checking other parameters, as they are checked in
         * the called function (usb_control_request_set()).
         */
        
        int rc;

        usb_log_debug("Sending Get Idle request to the device ("
            "iface: %d).\n", iface_no);
        
        uint16_t value = 0;
        uint8_t buffer[1];
        size_t actual_size = 0;
        
        rc = usb_control_request_get(ctrl_pipe, 
            USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_INTERFACE, 
            USB_HIDREQ_GET_IDLE, value, iface_no, buffer, 1, 
            &actual_size);

        if (rc != EOK) {
                usb_log_warning("Error sending Get Idle request to the device: "
                    "%s.\n", str_error(rc));
                return rc;
        }
        
        if (actual_size != 1) {
                usb_log_warning("Wrong data size: %zu, expected: 1.\n",
                        actual_size);
                return ELIMIT;
        }
        
        *duration = buffer[0];
        
        return EOK;
}

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

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