mirror of
https://github.com/Rockbox/rockbox.git
synced 2025-11-23 03:52:45 -05:00
Split radio i2c drivers into target tree where they belong. No changes to binaries produced.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15558 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Barry Wardell
parent
a677678e31
commit
0d8111cb39
4 changed files with 242 additions and 194 deletions
|
|
@ -1,433 +0,0 @@
|
|||
/***************************************************************************
|
||||
* __________ __ ___.
|
||||
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||||
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||||
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||||
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||||
* \/ \/ \/ \/ \/
|
||||
* $Id$
|
||||
* Physical interface of the Philips TEA5767 in Archos Ondio
|
||||
*
|
||||
* Copyright (C) 2002 by Linus Nielsen Feltzing
|
||||
*
|
||||
* All files in this archive are subject to the GNU General Public License.
|
||||
* See the file COPYING in the source tree root for full license agreement.
|
||||
*
|
||||
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
||||
* KIND, either express or implied.
|
||||
*
|
||||
****************************************************************************/
|
||||
#include "config.h"
|
||||
#include "cpu.h"
|
||||
#include "kernel.h"
|
||||
#include "thread.h"
|
||||
#include "logf.h"
|
||||
#include "system.h"
|
||||
#include "string.h"
|
||||
|
||||
#if (CONFIG_TUNER & TEA5767)
|
||||
#if (CONFIG_I2C == I2C_COLDFIRE)
|
||||
|
||||
#ifdef IAUDIO_X5
|
||||
#include "i2c-coldfire.h"
|
||||
|
||||
int fmradio_i2c_write(unsigned char address, const unsigned char* buf,
|
||||
int count)
|
||||
{
|
||||
return i2c_write(I2C_IFACE_0, address, buf, count);
|
||||
}
|
||||
|
||||
int fmradio_i2c_read(unsigned char address, unsigned char* buf, int count)
|
||||
{
|
||||
return i2c_read(I2C_IFACE_0, address, buf, count);
|
||||
}
|
||||
#else
|
||||
|
||||
/* cute little functions, atomic read-modify-write */
|
||||
/* SDA is GPIO1,23 */
|
||||
|
||||
#ifdef IRIVER_H300_SERIES
|
||||
|
||||
/* SDA is GPIO57 */
|
||||
#define SDA_OUTINIT and_l(~0x02000000, &GPIO1_OUT)
|
||||
#define SDA_HI_IN and_l(~0x02000000, &GPIO1_ENABLE)
|
||||
#define SDA_LO_OUT or_l( 0x02000000, &GPIO1_ENABLE)
|
||||
#define SDA ( 0x02000000 & GPIO1_READ)
|
||||
|
||||
/* SCL is GPIO56 */
|
||||
#define SCL_INPUT and_l(~0x01000000, &GPIO1_ENABLE)
|
||||
#define SCL_OUTPUT or_l( 0x01000000, &GPIO1_ENABLE)
|
||||
#define SCL_LO and_l(~0x01000000, &GPIO1_OUT)
|
||||
#define SCL_HI or_l( 0x01000000, &GPIO1_OUT)
|
||||
#define SCL ( 0x01000000 & GPIO1_READ)
|
||||
|
||||
#else
|
||||
|
||||
/* SDA is GPIO55 */
|
||||
#define SDA_OUTINIT and_l(~0x00800000, &GPIO1_OUT)
|
||||
#define SDA_HI_IN and_l(~0x00800000, &GPIO1_ENABLE)
|
||||
#define SDA_LO_OUT or_l( 0x00800000, &GPIO1_ENABLE)
|
||||
#define SDA ( 0x00800000 & GPIO1_READ)
|
||||
|
||||
/* SCL is GPIO3 */
|
||||
#define SCL_INPUT and_l(~0x00000008, &GPIO_ENABLE)
|
||||
#define SCL_OUTPUT or_l( 0x00000008, &GPIO_ENABLE)
|
||||
#define SCL_LO and_l(~0x00000008, &GPIO_OUT)
|
||||
#define SCL_HI or_l( 0x00000008, &GPIO_OUT)
|
||||
#define SCL ( 0x00000008 & GPIO_READ)
|
||||
#endif
|
||||
|
||||
/* delay loop to achieve 400kHz at 120MHz CPU frequency */
|
||||
#define DELAY \
|
||||
({ \
|
||||
int _x_; \
|
||||
asm volatile ( \
|
||||
"move.l #21, %[_x_] \r\n" \
|
||||
"1: \r\n" \
|
||||
"subq.l #1, %[_x_] \r\n" \
|
||||
"bhi.b 1b \r\n" \
|
||||
: [_x_]"=&d"(_x_) \
|
||||
); \
|
||||
})
|
||||
|
||||
static void fmradio_i2c_start(void)
|
||||
{
|
||||
SCL_HI;
|
||||
SCL_OUTPUT;
|
||||
SDA_HI_IN;
|
||||
SDA_OUTINIT;
|
||||
DELAY;
|
||||
SDA_LO_OUT;
|
||||
DELAY;
|
||||
SCL_LO;
|
||||
}
|
||||
|
||||
static void fmradio_i2c_stop(void)
|
||||
{
|
||||
SDA_LO_OUT;
|
||||
DELAY;
|
||||
SCL_HI;
|
||||
DELAY;
|
||||
SDA_HI_IN;
|
||||
}
|
||||
|
||||
/* Generate ACK or NACK */
|
||||
static void fmradio_i2c_ack(bool nack)
|
||||
{
|
||||
/* Here's the deal. The slave is slow, and sometimes needs to wait
|
||||
before it can receive the acknowledge. Therefore it forces the clock
|
||||
low until it is ready. We need to poll the clock line until it goes
|
||||
high before we release the ack.
|
||||
|
||||
In their infinite wisdom, iriver didn't pull up the SCL line, so
|
||||
we have to drive the SCL high repeatedly to simulate a pullup. */
|
||||
|
||||
if (nack)
|
||||
SDA_HI_IN;
|
||||
else
|
||||
SDA_LO_OUT;
|
||||
DELAY;
|
||||
|
||||
SCL_HI;
|
||||
do
|
||||
{
|
||||
SCL_OUTPUT; /* Set the clock to output */
|
||||
SCL_INPUT; /* Set the clock to input */
|
||||
DELAY;
|
||||
}
|
||||
while(!SCL); /* and wait for the slave to release it */
|
||||
|
||||
SCL_OUTPUT;
|
||||
SCL_LO;
|
||||
}
|
||||
|
||||
static int fmradio_i2c_getack(void)
|
||||
{
|
||||
int ret = 1;
|
||||
|
||||
/* Here's the deal. The slave is slow, and sometimes needs to wait
|
||||
before it can send the acknowledge. Therefore it forces the clock
|
||||
low until it is ready. We need to poll the clock line until it goes
|
||||
high before we read the ack.
|
||||
|
||||
In their infinite wisdom, iriver didn't pull up the SCL line, so
|
||||
we have to drive the SCL high repeatedly to simulate a pullup. */
|
||||
|
||||
SDA_HI_IN;
|
||||
DELAY;
|
||||
|
||||
SCL_HI; /* set clock to high */
|
||||
do
|
||||
{
|
||||
SCL_OUTPUT; /* Set the clock to output */
|
||||
SCL_INPUT; /* Set the clock to input */
|
||||
DELAY;
|
||||
}
|
||||
while(!SCL); /* and wait for the slave to release it */
|
||||
|
||||
if (SDA)
|
||||
ret = 0; /* ack failed */
|
||||
|
||||
SCL_OUTPUT;
|
||||
SCL_LO;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void fmradio_i2c_outb(unsigned char byte)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* clock out each bit, MSB first */
|
||||
for ( i=0x80; i; i>>=1 ) {
|
||||
if ( i & byte )
|
||||
SDA_HI_IN;
|
||||
else
|
||||
SDA_LO_OUT;
|
||||
DELAY;
|
||||
SCL_HI;
|
||||
DELAY;
|
||||
SCL_LO;
|
||||
}
|
||||
}
|
||||
|
||||
static unsigned char fmradio_i2c_inb(void)
|
||||
{
|
||||
int i;
|
||||
unsigned char byte = 0;
|
||||
|
||||
SDA_HI_IN;
|
||||
/* clock in each bit, MSB first */
|
||||
for ( i=0x80; i; i>>=1 ) {
|
||||
DELAY;
|
||||
SCL_HI;
|
||||
DELAY;
|
||||
if ( SDA )
|
||||
byte |= i;
|
||||
SCL_LO;
|
||||
}
|
||||
|
||||
return byte;
|
||||
}
|
||||
|
||||
int fmradio_i2c_write(int address, const unsigned char* buf, int count)
|
||||
{
|
||||
int i,x=0;
|
||||
|
||||
fmradio_i2c_start();
|
||||
fmradio_i2c_outb(address & 0xfe);
|
||||
if (fmradio_i2c_getack())
|
||||
{
|
||||
for (i=0; i<count; i++)
|
||||
{
|
||||
fmradio_i2c_outb(buf[i]);
|
||||
if (!fmradio_i2c_getack())
|
||||
{
|
||||
x=-2;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
logf("fmradio_i2c_write() - no ack\n");
|
||||
x=-1;
|
||||
}
|
||||
fmradio_i2c_stop();
|
||||
return x;
|
||||
}
|
||||
|
||||
int fmradio_i2c_read(int address, unsigned char* buf, int count)
|
||||
{
|
||||
int i,x=0;
|
||||
|
||||
fmradio_i2c_start();
|
||||
fmradio_i2c_outb(address | 1);
|
||||
|
||||
if (fmradio_i2c_getack())
|
||||
{
|
||||
for (i=count; i>0; i--)
|
||||
{
|
||||
*buf++ = fmradio_i2c_inb();
|
||||
fmradio_i2c_ack(i == 1);
|
||||
}
|
||||
}
|
||||
else
|
||||
x=-1;
|
||||
fmradio_i2c_stop();
|
||||
return x;
|
||||
}
|
||||
#endif /* ! IAUDIO_X5 */
|
||||
#else
|
||||
/* cute little functions, atomic read-modify-write */
|
||||
/* SDA is PB4 */
|
||||
#define SDA_LO and_b(~0x10, &PBDRL)
|
||||
#define SDA_HI or_b(0x10, &PBDRL)
|
||||
#define SDA_INPUT and_b(~0x10, &PBIORL)
|
||||
#define SDA_OUTPUT or_b(0x10, &PBIORL)
|
||||
#define SDA (PBDR & 0x0010)
|
||||
|
||||
/* SCL is PB1 */
|
||||
#define SCL_INPUT and_b(~0x02, &PBIORL)
|
||||
#define SCL_OUTPUT or_b(0x02, &PBIORL)
|
||||
#define SCL_LO and_b(~0x02, &PBDRL)
|
||||
#define SCL_HI or_b(0x02, &PBDRL)
|
||||
#define SCL (PBDR & 0x0002)
|
||||
|
||||
/* arbitrary delay loop */
|
||||
#define DELAY do { int _x; for(_x=0;_x<20;_x++);} while (0)
|
||||
|
||||
static void fmradio_i2c_start(void)
|
||||
{
|
||||
SDA_OUTPUT;
|
||||
SDA_HI;
|
||||
SCL_HI;
|
||||
SDA_LO;
|
||||
DELAY;
|
||||
SCL_LO;
|
||||
}
|
||||
|
||||
static void fmradio_i2c_stop(void)
|
||||
{
|
||||
SDA_LO;
|
||||
SCL_HI;
|
||||
DELAY;
|
||||
SDA_HI;
|
||||
}
|
||||
|
||||
|
||||
static void fmradio_i2c_ack(bool nack)
|
||||
{
|
||||
/* Here's the deal. The slave is slow, and sometimes needs to wait
|
||||
before it can receive the acknowledge. Therefore it forces the clock
|
||||
low until it is ready. We need to poll the clock line until it goes
|
||||
high before we release the ack. */
|
||||
|
||||
SCL_LO; /* Set the clock low */
|
||||
|
||||
if (nack)
|
||||
SDA_HI;
|
||||
else
|
||||
SDA_LO;
|
||||
|
||||
SCL_INPUT; /* Set the clock to input */
|
||||
while(!SCL) /* and wait for the slave to release it */
|
||||
sleep_thread(0);
|
||||
|
||||
DELAY;
|
||||
SCL_OUTPUT;
|
||||
SCL_LO;
|
||||
}
|
||||
|
||||
static int fmradio_i2c_getack(void)
|
||||
{
|
||||
int ret = 1;
|
||||
|
||||
/* Here's the deal. The slave is slow, and sometimes needs to wait
|
||||
before it can send the acknowledge. Therefore it forces the clock
|
||||
low until it is ready. We need to poll the clock line until it goes
|
||||
high before we read the ack. */
|
||||
|
||||
SDA_INPUT; /* And set to input */
|
||||
SCL_INPUT; /* Set the clock to input */
|
||||
while(!SCL) /* and wait for the slave to release it */
|
||||
sleep_thread(0);
|
||||
|
||||
if (SDA)
|
||||
/* ack failed */
|
||||
ret = 0;
|
||||
|
||||
SCL_OUTPUT;
|
||||
SCL_LO;
|
||||
SDA_HI;
|
||||
SDA_OUTPUT;
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void fmradio_i2c_outb(unsigned char byte)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* clock out each bit, MSB first */
|
||||
for ( i=0x80; i; i>>=1 ) {
|
||||
if ( i & byte )
|
||||
{
|
||||
SDA_HI;
|
||||
}
|
||||
else
|
||||
{
|
||||
SDA_LO;
|
||||
}
|
||||
SCL_HI;
|
||||
SCL_LO;
|
||||
}
|
||||
|
||||
SDA_HI;
|
||||
}
|
||||
|
||||
static unsigned char fmradio_i2c_inb(void)
|
||||
{
|
||||
int i;
|
||||
unsigned char byte = 0;
|
||||
|
||||
/* clock in each bit, MSB first */
|
||||
for ( i=0x80; i; i>>=1 ) {
|
||||
SDA_INPUT; /* And set to input */
|
||||
SCL_HI;
|
||||
if ( SDA )
|
||||
byte |= i;
|
||||
SCL_LO;
|
||||
SDA_OUTPUT;
|
||||
}
|
||||
|
||||
return byte;
|
||||
}
|
||||
|
||||
int fmradio_i2c_write(int address, const unsigned char* buf, int count)
|
||||
{
|
||||
int i,x=0;
|
||||
|
||||
fmradio_i2c_start();
|
||||
fmradio_i2c_outb(address & 0xfe);
|
||||
if (fmradio_i2c_getack())
|
||||
{
|
||||
for (i=0; i<count; i++)
|
||||
{
|
||||
fmradio_i2c_outb(buf[i]);
|
||||
if (!fmradio_i2c_getack())
|
||||
{
|
||||
x=-2;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
logf("fmradio_i2c_write() - no ack\n");
|
||||
x=-1;
|
||||
}
|
||||
fmradio_i2c_stop();
|
||||
return x;
|
||||
}
|
||||
|
||||
int fmradio_i2c_read(int address, unsigned char* buf, int count)
|
||||
{
|
||||
int i,x=0;
|
||||
|
||||
fmradio_i2c_start();
|
||||
fmradio_i2c_outb(address | 1);
|
||||
if (fmradio_i2c_getack()) {
|
||||
for (i=count; i>0; i--)
|
||||
{
|
||||
*buf++ = fmradio_i2c_inb();
|
||||
fmradio_i2c_ack(i == 1);
|
||||
}
|
||||
}
|
||||
else
|
||||
x=-1;
|
||||
fmradio_i2c_stop();
|
||||
return x;
|
||||
}
|
||||
|
||||
#endif
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue