79 lines
1.6 KiB
C
79 lines
1.6 KiB
C
#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "xf86.h"
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#include "xf86i2c.h"
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#include "tda8425.h"
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#include "i2c_def.h"
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#define TDA8425(a,b) { \
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data[0]=a; \
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data[1]=b; \
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I2C_WriteRead(&(t->d), data, 2, NULL, 0); \
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}
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TDA8425Ptr Detect_tda8425(I2CBusPtr b, I2CSlaveAddr addr, Bool force)
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{
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TDA8425Ptr t;
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t = calloc(1, sizeof(TDA8425Rec));
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if(t == NULL) return NULL;
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t->d.DevName = "TDA8425 BTSC Stereo Audio Processor";
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t->d.SlaveAddr = addr;
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t->d.pI2CBus = b;
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t->d.NextDev = NULL;
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t->d.StartTimeout = b->StartTimeout;
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t->d.BitTimeout = b->BitTimeout;
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t->d.AcknTimeout = b->AcknTimeout;
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t->d.ByteTimeout = b->ByteTimeout;
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if(!force && !I2CProbeAddress(b, addr))
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{
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free(t);
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return NULL;
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}
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/* set default parameters */
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if(!I2CDevInit(&(t->d)))
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{
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free(t);
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return NULL;
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}
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return t;
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}
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Bool tda8425_init(TDA8425Ptr t)
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{
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t->stereo = 3; /* 3 = Spacial 2 = Linear 1 = Pseudo 0 = Forced mono */
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t->v_left = 0xFF; /* FF - C0 */
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t->v_right = 0xFF; /* FF - C0 */
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t->bass = 0xF6; /* 0xFF - 0xF0 */
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t->treble = 0xF6; /* 0xFF - 0xF0 */
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t->src_sel = 3; /* 3 - stereo */
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t->mute = TRUE;
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t->mux = 0; /* 0 - source one, 1 -source 2 */
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tda8425_setaudio(t);
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return TRUE;
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}
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void tda8425_setaudio(TDA8425Ptr t)
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{
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I2CByte data[2];
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TDA8425(0x00, t->v_left );
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TDA8425(0x01, t->v_right );
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TDA8425(0x02, t->bass );
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TDA8425(0x03, t->treble );
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TDA8425(0x08, 0xC0 | (t->mute ? 0x20 : 0x0) | (t->stereo << 3) | (t->src_sel << 1) |
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t->mux);
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}
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void tda8425_mute(TDA8425Ptr t, Bool mute)
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{
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t->mute = mute;
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tda8425_setaudio(t);
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}
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