root / hw / i2c.h @ 2c277908
History | View | Annotate | Download (2.9 kB)
1 |
#ifndef QEMU_I2C_H
|
---|---|
2 |
#define QEMU_I2C_H
|
3 |
|
4 |
/* The QEMU I2C implementation only supports simple transfers that complete
|
5 |
immediately. It does not support slave devices that need to be able to
|
6 |
defer their response (eg. CPU slave interfaces where the data is supplied
|
7 |
by the device driver in response to an interrupt). */
|
8 |
|
9 |
enum i2c_event {
|
10 |
I2C_START_RECV, |
11 |
I2C_START_SEND, |
12 |
I2C_FINISH, |
13 |
I2C_NACK /* Masker NACKed a receive byte. */
|
14 |
}; |
15 |
|
16 |
/* Master to slave. */
|
17 |
typedef int (*i2c_send_cb)(i2c_slave *s, uint8_t data); |
18 |
/* Slave to master. */
|
19 |
typedef int (*i2c_recv_cb)(i2c_slave *s); |
20 |
/* Notify the slave of a bus state change. */
|
21 |
typedef void (*i2c_event_cb)(i2c_slave *s, enum i2c_event event); |
22 |
|
23 |
struct i2c_slave
|
24 |
{ |
25 |
/* Callbacks to be set by the device. */
|
26 |
i2c_event_cb event; |
27 |
i2c_recv_cb recv; |
28 |
i2c_send_cb send; |
29 |
|
30 |
/* Remaining fields for internal use by the I2C code. */
|
31 |
int address;
|
32 |
void *next;
|
33 |
i2c_bus *bus; |
34 |
}; |
35 |
|
36 |
i2c_bus *i2c_init_bus(void);
|
37 |
i2c_slave *i2c_slave_init(i2c_bus *bus, int address, int size); |
38 |
void i2c_set_slave_address(i2c_slave *dev, int address); |
39 |
int i2c_bus_busy(i2c_bus *bus);
|
40 |
int i2c_start_transfer(i2c_bus *bus, int address, int recv); |
41 |
void i2c_end_transfer(i2c_bus *bus);
|
42 |
void i2c_nack(i2c_bus *bus);
|
43 |
int i2c_send(i2c_bus *bus, uint8_t data);
|
44 |
int i2c_recv(i2c_bus *bus);
|
45 |
void i2c_slave_save(QEMUFile *f, i2c_slave *dev);
|
46 |
void i2c_slave_load(QEMUFile *f, i2c_slave *dev);
|
47 |
|
48 |
/* max111x.c */
|
49 |
struct max111x_s;
|
50 |
uint32_t max111x_read(void *opaque);
|
51 |
void max111x_write(void *opaque, uint32_t value); |
52 |
struct max111x_s *max1110_init(qemu_irq cb);
|
53 |
struct max111x_s *max1111_init(qemu_irq cb);
|
54 |
void max111x_set_input(struct max111x_s *s, int line, uint8_t value); |
55 |
|
56 |
/* max7310.c */
|
57 |
i2c_slave *max7310_init(i2c_bus *bus); |
58 |
void max7310_reset(i2c_slave *i2c);
|
59 |
qemu_irq *max7310_gpio_in_get(i2c_slave *i2c); |
60 |
void max7310_gpio_out_set(i2c_slave *i2c, int line, qemu_irq handler); |
61 |
|
62 |
/* wm8750.c */
|
63 |
i2c_slave *wm8750_init(i2c_bus *bus, AudioState *audio); |
64 |
void wm8750_reset(i2c_slave *i2c);
|
65 |
void wm8750_data_req_set(i2c_slave *i2c,
|
66 |
void (*data_req)(void *, int, int), void *opaque); |
67 |
void wm8750_dac_dat(void *opaque, uint32_t sample); |
68 |
uint32_t wm8750_adc_dat(void *opaque);
|
69 |
void *wm8750_dac_buffer(void *opaque, int samples); |
70 |
void wm8750_dac_commit(void *opaque); |
71 |
void wm8750_set_bclk_in(void *opaque, int new_hz); |
72 |
|
73 |
/* ssd0303.c */
|
74 |
void ssd0303_init(DisplayState *ds, i2c_bus *bus, int address); |
75 |
|
76 |
/* twl92230.c */
|
77 |
i2c_slave *twl92230_init(i2c_bus *bus, qemu_irq irq); |
78 |
qemu_irq *twl92230_gpio_in_get(i2c_slave *i2c); |
79 |
void twl92230_gpio_out_set(i2c_slave *i2c, int line, qemu_irq handler); |
80 |
|
81 |
/* tmp105.c */
|
82 |
struct i2c_slave *tmp105_init(i2c_bus *bus, qemu_irq alarm);
|
83 |
void tmp105_reset(i2c_slave *i2c);
|
84 |
void tmp105_set(i2c_slave *i2c, int temp); |
85 |
|
86 |
/* lm832x.c */
|
87 |
struct i2c_slave *lm8323_init(i2c_bus *bus, qemu_irq nirq);
|
88 |
void lm832x_key_event(struct i2c_slave *i2c, int key, int state); |
89 |
|
90 |
#endif
|