71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/* (C) 2019 by Harald Welte <laforge@gnumonks.org>
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* All Rights Reserved
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <libusb.h>
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#include "idt82v2081.h"
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#include "idt82v2081_usb.h"
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/* Adaption layer between idt82 driver and libusb */
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struct idt82_libusb_infos {
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struct libusb_device_handle *devh;
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uint8_t ep;
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};
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/* backend function for core idt82 driver */
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int idt82_reg_read(struct idt82 *idt, uint8_t reg)
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{
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struct idt82_libusb_infos *pi = idt->priv;
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int rv;
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uint8_t val;
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rv = libusb_control_transfer(pi->devh, 0xc2, 0x02, reg, pi->ep, &val, 1, 1000);
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if (rv != 1)
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return -EPIPE;
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return val;
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}
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/* backend function for core idt82 driver */
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int idt82_reg_write(struct idt82 *idt, uint8_t reg, uint8_t val)
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{
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struct idt82_libusb_infos *pi = idt->priv;
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int rv;
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rv = libusb_control_transfer(pi->devh, 0x42, 0x01, reg, pi->ep, &val, 1, 1000);
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if (rv != 1)
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return -EPIPE;
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return 0;
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}
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int idt82_usb_init(struct idt82 *idt, struct libusb_device_handle *devh, uint8_t ep)
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{
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struct idt82_libusb_infos *pi;
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idt->priv = pi = malloc(sizeof(struct idt82_libusb_infos));
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pi->devh = devh;
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pi->ep = ep;
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return 0;
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}
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