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i2c: Split smbus into parts

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smbus.c and smbus.h had device side code, master side code, and
smbus.h has some smbus_eeprom.c definitions.  Split them into
separate files.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Corey Minyard 2018-11-13 18:31:27 -06:00
parent 86c7e2f4a9
commit 93198b6cad
18 changed files with 288 additions and 196 deletions
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69
include/hw/i2c/smbus_slave.h Normal file
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/*
* QEMU SMBus device (slave) API
*
* Copyright (c) 2007 Arastra, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef HW_SMBUS_SLAVE_H
#define HW_SMBUS_SLAVE_H
#include "hw/i2c/i2c.h"
#define TYPE_SMBUS_DEVICE "smbus-device"
#define SMBUS_DEVICE(obj) \
OBJECT_CHECK(SMBusDevice, (obj), TYPE_SMBUS_DEVICE)
#define SMBUS_DEVICE_CLASS(klass) \
OBJECT_CLASS_CHECK(SMBusDeviceClass, (klass), TYPE_SMBUS_DEVICE)
#define SMBUS_DEVICE_GET_CLASS(obj) \
OBJECT_GET_CLASS(SMBusDeviceClass, (obj), TYPE_SMBUS_DEVICE)
typedef struct SMBusDevice SMBusDevice;
typedef struct SMBusDeviceClass
{
I2CSlaveClass parent_class;
void (*quick_cmd)(SMBusDevice *dev, uint8_t read);
void (*send_byte)(SMBusDevice *dev, uint8_t val);
uint8_t (*receive_byte)(SMBusDevice *dev);
/* We can't distinguish between a word write and a block write with
length 1, so pass the whole data block including the length byte
(if present). The device is responsible figuring out what type of
command this is. */
void (*write_data)(SMBusDevice *dev, uint8_t cmd, uint8_t *buf, int len);
/* Likewise we can't distinguish between different reads, or even know
the length of the read until the read is complete, so read data a
byte at a time. The device is responsible for adding the length
byte on block reads. */
uint8_t (*read_data)(SMBusDevice *dev, uint8_t cmd, int n);
} SMBusDeviceClass;
struct SMBusDevice {
/* The SMBus protocol is implemented on top of I2C. */
I2CSlave i2c;
/* Remaining fields for internal use only. */
int mode;
int data_len;
uint8_t data_buf[34]; /* command + len + 32 bytes of data. */
uint8_t command;
};
#endif