6
/* The QEMU I2C implementation only supports simple transfers that complete
7
immediately. It does not support slave devices that need to be able to
8
defer their response (eg. CPU slave interfaces where the data is supplied
9
by the device driver in response to an interrupt). */
15
I2C_NACK /* Masker NACKed a receive byte. */
18
typedef struct I2CSlave I2CSlave;
20
#define TYPE_I2C_SLAVE "i2c-slave"
21
#define I2C_SLAVE(obj) \
22
OBJECT_CHECK(I2CSlave, (obj), TYPE_I2C_SLAVE)
23
#define I2C_SLAVE_CLASS(klass) \
24
OBJECT_CLASS_CHECK(I2CSlaveClass, (klass), TYPE_I2C_SLAVE)
25
#define I2C_SLAVE_GET_CLASS(obj) \
26
OBJECT_GET_CLASS(I2CSlaveClass, (obj), TYPE_I2C_SLAVE)
28
typedef struct I2CSlaveClass
30
DeviceClass parent_class;
32
/* Callbacks provided by the device. */
33
int (*init)(I2CSlave *dev);
35
/* Master to slave. */
36
int (*send)(I2CSlave *s, uint8_t data);
38
/* Slave to master. */
39
int (*recv)(I2CSlave *s);
41
/* Notify the slave of a bus state change. */
42
void (*event)(I2CSlave *s, enum i2c_event event);
49
/* Remaining fields for internal use by the I2C code. */
53
i2c_bus *i2c_init_bus(DeviceState *parent, const char *name);
54
void i2c_set_slave_address(I2CSlave *dev, uint8_t address);
55
int i2c_bus_busy(i2c_bus *bus);
56
int i2c_start_transfer(i2c_bus *bus, uint8_t address, int recv);
57
void i2c_end_transfer(i2c_bus *bus);
58
void i2c_nack(i2c_bus *bus);
59
int i2c_send(i2c_bus *bus, uint8_t data);
60
int i2c_recv(i2c_bus *bus);
62
#define FROM_I2C_SLAVE(type, dev) DO_UPCAST(type, i2c, dev)
64
DeviceState *i2c_create_slave(i2c_bus *bus, const char *name, uint8_t addr);
67
void wm8750_data_req_set(DeviceState *dev,
68
void (*data_req)(void *, int, int), void *opaque);
69
void wm8750_dac_dat(void *opaque, uint32_t sample);
70
uint32_t wm8750_adc_dat(void *opaque);
71
void *wm8750_dac_buffer(void *opaque, int samples);
72
void wm8750_dac_commit(void *opaque);
73
void wm8750_set_bclk_in(void *opaque, int new_hz);
76
void lm832x_key_event(DeviceState *dev, int key, int state);
78
extern const VMStateDescription vmstate_i2c_slave;
80
#define VMSTATE_I2C_SLAVE(_field, _state) { \
81
.name = (stringify(_field)), \
82
.size = sizeof(I2CSlave), \
83
.vmsd = &vmstate_i2c_slave, \
84
.flags = VMS_STRUCT, \
85
.offset = vmstate_offset_value(_state, _field, I2CSlave), \