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9#include "qemu/osdep.h"
10#include "i2c.h"
11#include "libqtest.h"
12
13void qi2c_send(QI2CDevice *i2cdev, const uint8_t *buf, uint16_t len)
14{
15 i2cdev->bus->send(i2cdev->bus, i2cdev->addr, buf, len);
16}
17
18void qi2c_recv(QI2CDevice *i2cdev, uint8_t *buf, uint16_t len)
19{
20 i2cdev->bus->recv(i2cdev->bus, i2cdev->addr, buf, len);
21}
22
23void i2c_read_block(QI2CDevice *i2cdev, uint8_t reg,
24 uint8_t *buf, uint16_t len)
25{
26 qi2c_send(i2cdev, ®, 1);
27 qi2c_recv(i2cdev, buf, len);
28}
29
30void i2c_write_block(QI2CDevice *i2cdev, uint8_t reg,
31 const uint8_t *buf, uint16_t len)
32{
33 uint8_t *cmd = g_malloc(len + 1);
34 cmd[0] = reg;
35 memcpy(&cmd[1], buf, len);
36 qi2c_send(i2cdev, cmd, len + 1);
37 g_free(cmd);
38}
39
40uint8_t i2c_get8(QI2CDevice *i2cdev, uint8_t reg)
41{
42 uint8_t resp[1];
43 i2c_read_block(i2cdev, reg, resp, sizeof(resp));
44 return resp[0];
45}
46
47uint16_t i2c_get16(QI2CDevice *i2cdev, uint8_t reg)
48{
49 uint8_t resp[2];
50 i2c_read_block(i2cdev, reg, resp, sizeof(resp));
51 return (resp[0] << 8) | resp[1];
52}
53
54void i2c_set8(QI2CDevice *i2cdev, uint8_t reg, uint8_t value)
55{
56 i2c_write_block(i2cdev, reg, &value, 1);
57}
58
59void i2c_set16(QI2CDevice *i2cdev, uint8_t reg, uint16_t value)
60{
61 uint8_t data[2];
62
63 data[0] = value >> 8;
64 data[1] = value & 255;
65 i2c_write_block(i2cdev, reg, data, sizeof(data));
66}
67
68void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr)
69{
70 QI2CDevice *i2cdev = g_new0(QI2CDevice, 1);
71
72 i2cdev->bus = i2c_bus;
73 if (addr) {
74 i2cdev->addr = ((QI2CAddress *)addr)->addr;
75 }
76 return &i2cdev->obj;
77}
78
79void add_qi2c_address(QOSGraphEdgeOptions *opts, QI2CAddress *addr)
80{
81 g_assert(addr);
82
83 opts->arg = addr;
84 opts->size_arg = sizeof(QI2CAddress);
85}
86