1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include "xf86.h"
#include "xf86i2c.h"
#include "tda8425.h"
#include "i2c_def.h"
#define TDA8425(a,b) { \
data[0]=a; \
data[1]=b; \
I2C_WriteRead(&(t->d), data, 2, NULL, 0); \
}
TDA8425Ptr Detect_tda8425(I2CBusPtr b, I2CSlaveAddr addr, Bool force)
{
TDA8425Ptr t;
t = xcalloc(1, sizeof(TDA8425Rec));
if(t == NULL) return NULL;
t->d.DevName = "TDA8425 BTSC Stereo Audio Processor";
t->d.SlaveAddr = addr;
t->d.pI2CBus = b;
t->d.NextDev = NULL;
t->d.StartTimeout = b->StartTimeout;
t->d.BitTimeout = b->BitTimeout;
t->d.AcknTimeout = b->AcknTimeout;
t->d.ByteTimeout = b->ByteTimeout;
if(!force && !I2CProbeAddress(b, addr))
{
xfree(t);
return NULL;
}
/* set default parameters */
if(!I2CDevInit(&(t->d)))
{
xfree(t);
return NULL;
}
return t;
}
Bool tda8425_init(TDA8425Ptr t)
{
t->stereo = 3; /* 3 = Spacial 2 = Linear 1 = Pseudo 0 = Forced mono */
t->v_left = 0xFF; /* FF - C0 */
t->v_right = 0xFF; /* FF - C0 */
t->bass = 0xF6; /* 0xFF - 0xF0 */
t->treble = 0xF6; /* 0xFF - 0xF0 */
t->src_sel = 3; /* 3 - stereo */
t->mute = TRUE;
t->mux = 0; /* 0 - source one, 1 -source 2 */
tda8425_setaudio(t);
return TRUE;
}
void tda8425_setaudio(TDA8425Ptr t)
{
I2CByte data[2];
TDA8425(0x00, t->v_left );
TDA8425(0x01, t->v_right );
TDA8425(0x02, t->bass );
TDA8425(0x03, t->treble );
TDA8425(0x08, 0xC0 | (t->mute ? 0x20 : 0x0) | (t->stereo << 3) | (t->src_sel << 1) |
t->mux);
}
void tda8425_mute(TDA8425Ptr t, Bool mute)
{
t->mute = mute;
tda8425_setaudio(t);
}
|
