1#ifndef QEMU_I2C_H
2#define QEMU_I2C_H
3
4#include "hw/qdev.h"
5
6
7
8
9
10
11enum i2c_event {
12 I2C_START_RECV,
13 I2C_START_SEND,
14 I2C_FINISH,
15 I2C_NACK
16};
17
18typedef struct I2CSlave I2CSlave;
19
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)
27
28typedef struct I2CSlaveClass
29{
30 DeviceClass parent_class;
31
32
33 int (*init)(I2CSlave *dev);
34
35
36 int (*send)(I2CSlave *s, uint8_t data);
37
38
39 int (*recv)(I2CSlave *s);
40
41
42 void (*event)(I2CSlave *s, enum i2c_event event);
43} I2CSlaveClass;
44
45struct I2CSlave
46{
47 DeviceState qdev;
48
49
50 uint8_t address;
51};
52
53I2CBus *i2c_init_bus(DeviceState *parent, const char *name);
54void i2c_set_slave_address(I2CSlave *dev, uint8_t address);
55int i2c_bus_busy(I2CBus *bus);
56int i2c_start_transfer(I2CBus *bus, uint8_t address, int recv);
57void i2c_end_transfer(I2CBus *bus);
58void i2c_nack(I2CBus *bus);
59int i2c_send_recv(I2CBus *bus, uint8_t *data, bool send);
60int i2c_send(I2CBus *bus, uint8_t data);
61int i2c_recv(I2CBus *bus);
62
63DeviceState *i2c_create_slave(I2CBus *bus, const char *name, uint8_t addr);
64
65
66void wm8750_data_req_set(DeviceState *dev,
67 void (*data_req)(void *, int, int), void *opaque);
68void wm8750_dac_dat(void *opaque, uint32_t sample);
69uint32_t wm8750_adc_dat(void *opaque);
70void *wm8750_dac_buffer(void *opaque, int samples);
71void wm8750_dac_commit(void *opaque);
72void wm8750_set_bclk_in(void *opaque, int new_hz);
73
74
75void lm832x_key_event(DeviceState *dev, int key, int state);
76
77extern const VMStateDescription vmstate_i2c_slave;
78
79#define VMSTATE_I2C_SLAVE(_field, _state) { \
80 .name = (stringify(_field)), \
81 .size = sizeof(I2CSlave), \
82 .vmsd = &vmstate_i2c_slave, \
83 .flags = VMS_STRUCT, \
84 .offset = vmstate_offset_value(_state, _field, I2CSlave), \
85}
86
87#endif
88