LXR qemu/hw/misc/i2c-dev-dummy.c

   1/*
   2 * QEMU model of the XPPU
   3 *
   4 * Copyright (c) 2018 Xilinx Inc.
   5 *
   6 * Written by Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
   7 *
   8 * Permission is hereby granted, free of charge, to any person obtaining a copy
   9 * of this software and associated documentation files (the "Software"), to deal
  10 * in the Software without restriction, including without limitation the rights
  11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12 * copies of the Software, and to permit persons to whom the Software is
  13 * furnished to do so, subject to the following conditions:
  14 *
  15 * The above copyright notice and this permission notice shall be included in
  16 * all copies or substantial portions of the Software.
  17 *
  18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24 * THE SOFTWARE.
  25 */
  26
  27#include "qemu/osdep.h"
  28#include "hw/i2c/i2c.h"
  29#include "qemu/log.h"
  30
  31#define TYPE_DUMMY_I2C_DEVICE "i2c-dev-dummy"
  32#define DEBUG_DUMMY_I2C_DEVICE     0
  33#define DPRINT(fmt, args...) \
  34        if (DEBUG_DUMMY_I2C_DEVICE) { \
  35            qemu_log("%s: " fmt, __func__, ## args); \
  36        }
  37
  38static uint8_t dummyi2cdev_rx(I2CSlave *i2c)
  39{
  40    return 0;
  41}
  42
  43static int dummyi2cdev_tx(I2CSlave *i2c, uint8_t data)
  44{
  45    return 0;
  46}
  47
  48static void dummyi2cdev_class_init(ObjectClass *klass, void *data)
  49{
  50    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
  51
  52    k->recv = dummyi2cdev_rx;
  53    k->send = dummyi2cdev_tx;
  54}
  55
  56static const TypeInfo dummyi2cdev_info = {
  57    .name = TYPE_DUMMY_I2C_DEVICE,
  58    .parent = TYPE_I2C_SLAVE,
  59    .class_init = dummyi2cdev_class_init,
  60};
  61
  62static void dummyi2cdev_register_type(void)
  63{
  64    type_register_static(&dummyi2cdev_info);
  65}
  66
  67type_init(dummyi2cdev_register_type)
  68