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Philips tuner supported

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5300 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jörg Hohensohn 2004-10-17 23:24:18 +00:00
parent ca45869a88
commit 4adf929a90
3 changed files with 197 additions and 11 deletions
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25
firmware/tuner_philips.c
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@ -19,10 +19,12 @@
****************************************************************************/
#include <stdbool.h>
#include <string.h>
#include "tuner.h" /* tuner abstraction interface */
#include "fmradio_i2c.h" /* physical interface driver */
/* FIXME: this is just a dummy */
#define I2C_ADR 0xC0
static unsigned char write_bytes[5];
/* tuner abstraction layer: set something to the tuner */
void philips_set(int setting, int value)
@ -31,12 +33,22 @@ void philips_set(int setting, int value)
switch(setting)
{
case RADIO_INIT:
memset(write_bytes, 0, sizeof(write_bytes));
break;
case RADIO_FREQUENCY:
{
int n;
n = (4 * (value - 225000)) / 50000;
write_bytes[0] = (write_bytes[0] & 0xC0) | (n >> 8);
write_bytes[1] = n & 0xFF;
fmradio_i2c_write(I2C_ADR, write_bytes, sizeof(write_bytes));
}
break;
case RADIO_MUTE:
write_bytes[0] = (write_bytes[0] & 0x7F) | (value ? 0x80 : 0);
fmradio_i2c_write(I2C_ADR, write_bytes, sizeof(write_bytes));
break;
case RADIO_IF_MEASUREMENT:
@ -46,6 +58,8 @@ void philips_set(int setting, int value)
break;
case RADIO_FORCE_MONO:
write_bytes[2] = (write_bytes[2] & 0xF7) | (value ? 0x08 : 0);
fmradio_i2c_write(I2C_ADR, write_bytes, sizeof(write_bytes));
break;
}
}
@ -53,17 +67,24 @@ void philips_set(int setting, int value)
/* tuner abstraction layer: read something from the tuner */
int philips_get(int setting)
{
unsigned char read_bytes[5];
int val = -1;
fmradio_i2c_read(I2C_ADR, read_bytes, sizeof(read_bytes));
switch(setting)
{
case RADIO_PRESENT:
val = 0; /* false */
val = 1; /* true */
break;
case RADIO_IF_MEASURED:
val = read_bytes[2] & 0x7F;
val = 1070 + (val-55)/2;
break;
case RADIO_STEREO:
val = read_bytes[2] >> 7;
break;
}
return val;