hw/smbus.h

   1 /*
   2  * QEMU SMBus API
   3  *
   4  * Copyright (c) 2007 Arastra, Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 typedef struct SMBusDevice SMBusDevice;
  26
  27 struct SMBusDevice {
  28     uint8_t addr;
  29     void (*quick_cmd)(SMBusDevice *dev, uint8_t read);
  30     void (*send_byte)(SMBusDevice *dev, uint8_t val);
  31     uint8_t (*receive_byte)(SMBusDevice *dev);
  32     void (*write_byte)(SMBusDevice *dev, uint8_t cmd, uint8_t val);
  33     uint8_t (*read_byte)(SMBusDevice *dev, uint8_t cmd);
  34     void (*write_word)(SMBusDevice *dev, uint8_t cmd, uint16_t val);
  35     uint16_t (*read_word)(SMBusDevice *dev, uint8_t cmd);
  36     void (*write_block)(SMBusDevice *dev, uint8_t cmd, uint8_t len, uint8_t *buf);
  37     uint8_t (*read_block)(SMBusDevice *dev, uint8_t cmd, uint8_t *buf);
  38 };