987e8b3b03
1) Move GPIO-related functionality to qdev. Now one can use directly qdev_get_gpio_in()/qdev_connect_gpio_out() on max7310 devices. 2) Make reset to be called through qdev.reset callback. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
#ifndef QEMU_I2C_H
|
|
#define QEMU_I2C_H
|
|
|
|
#include "qdev.h"
|
|
|
|
/* The QEMU I2C implementation only supports simple transfers that complete
|
|
immediately. It does not support slave devices that need to be able to
|
|
defer their response (eg. CPU slave interfaces where the data is supplied
|
|
by the device driver in response to an interrupt). */
|
|
|
|
enum i2c_event {
|
|
I2C_START_RECV,
|
|
I2C_START_SEND,
|
|
I2C_FINISH,
|
|
I2C_NACK /* Masker NACKed a receive byte. */
|
|
};
|
|
|
|
/* Master to slave. */
|
|
typedef int (*i2c_send_cb)(i2c_slave *s, uint8_t data);
|
|
/* Slave to master. */
|
|
typedef int (*i2c_recv_cb)(i2c_slave *s);
|
|
/* Notify the slave of a bus state change. */
|
|
typedef void (*i2c_event_cb)(i2c_slave *s, enum i2c_event event);
|
|
|
|
typedef int (*i2c_slave_initfn)(i2c_slave *dev);
|
|
|
|
typedef struct {
|
|
DeviceInfo qdev;
|
|
|
|
/* Callbacks provided by the device. */
|
|
i2c_slave_initfn init;
|
|
i2c_event_cb event;
|
|
i2c_recv_cb recv;
|
|
i2c_send_cb send;
|
|
} I2CSlaveInfo;
|
|
|
|
struct i2c_slave
|
|
{
|
|
DeviceState qdev;
|
|
I2CSlaveInfo *info;
|
|
|
|
/* Remaining fields for internal use by the I2C code. */
|
|
uint8_t address;
|
|
};
|
|
|
|
i2c_bus *i2c_init_bus(DeviceState *parent, const char *name);
|
|
void i2c_set_slave_address(i2c_slave *dev, uint8_t address);
|
|
int i2c_bus_busy(i2c_bus *bus);
|
|
int i2c_start_transfer(i2c_bus *bus, uint8_t address, int recv);
|
|
void i2c_end_transfer(i2c_bus *bus);
|
|
void i2c_nack(i2c_bus *bus);
|
|
int i2c_send(i2c_bus *bus, uint8_t data);
|
|
int i2c_recv(i2c_bus *bus);
|
|
|
|
#define I2C_SLAVE_FROM_QDEV(dev) DO_UPCAST(i2c_slave, qdev, dev)
|
|
#define FROM_I2C_SLAVE(type, dev) DO_UPCAST(type, i2c, dev)
|
|
|
|
void i2c_register_slave(I2CSlaveInfo *type);
|
|
|
|
DeviceState *i2c_create_slave(i2c_bus *bus, const char *name, uint8_t addr);
|
|
|
|
/* wm8750.c */
|
|
void wm8750_data_req_set(DeviceState *dev,
|
|
void (*data_req)(void *, int, int), void *opaque);
|
|
void wm8750_dac_dat(void *opaque, uint32_t sample);
|
|
uint32_t wm8750_adc_dat(void *opaque);
|
|
void *wm8750_dac_buffer(void *opaque, int samples);
|
|
void wm8750_dac_commit(void *opaque);
|
|
void wm8750_set_bclk_in(void *opaque, int new_hz);
|
|
|
|
/* tmp105.c */
|
|
void tmp105_set(i2c_slave *i2c, int temp);
|
|
|
|
/* lm832x.c */
|
|
void lm832x_key_event(i2c_slave *i2c, int key, int state);
|
|
|
|
#endif
|