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rockbox/firmware/drivers/mas.c
Daniel Stenberg 2acc0ac542 Updated our source code header to explicitly mention that we are GPL v2 or 
later. We still need to hunt down snippets used that are not. 1324 modified
files...
http://www.rockbox.org/mail/archive/rockbox-dev-archive-2008-06/0060.shtml


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17847 a1c6a512-1295-4272-9138-f99709370657
2008-06-28 18:10:04 +00:00

468 lines
9.8 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "stdbool.h"
#include "config.h"
#include "sh7034.h"
#include "i2c.h"
#include "debug.h"
#include "mas.h"
#include "kernel.h"
#include "system.h"
#include "hwcompat.h"
static int mas_devread(unsigned long *dest, int len);
int mas_default_read(unsigned short *buf)
{
unsigned char *dest = (unsigned char *)buf;
int ret = 0;
i2c_begin();
i2c_start();
i2c_outb(MAS_DEV_WRITE);
if (i2c_getack()) {
i2c_outb(MAS_DATA_READ);
if (i2c_getack()) {
i2c_start();
i2c_outb(MAS_DEV_READ);
if (i2c_getack()) {
dest[0] = i2c_inb(0);
dest[1] = i2c_inb(1);
}
else
ret = -3;
}
else
ret = -2;
}
else
ret = -1;
i2c_stop();
i2c_end();
return ret;
}
int mas_run(unsigned short address)
{
int ret = 0;
unsigned char buf[3];
i2c_begin();
buf[0] = MAS_DATA_WRITE;
buf[1] = address >> 8;
buf[2] = address & 0xff;
/* send run command */
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
ret = -1;
}
i2c_end();
return ret;
}
/* note: 'len' is number of 32-bit words, not number of bytes! */
int mas_readmem(int bank, int addr, unsigned long* dest, int len)
{
int ret = 0;
unsigned char buf[7];
i2c_begin();
buf[0] = MAS_DATA_WRITE;
buf[1] = bank?MAS_CMD_READ_D1_MEM:MAS_CMD_READ_D0_MEM;
buf[2] = 0x00;
buf[3] = (len & 0xff00) >> 8;
buf[4] = len & 0xff;
buf[5] = (addr & 0xff00) >> 8;
buf[6] = addr & 0xff;
/* send read command */
if (i2c_write(MAS_DEV_WRITE,buf,7))
{
ret = -1;
}
ret = mas_devread(dest, len);
i2c_end();
return ret;
}
/* note: 'len' is number of 32-bit words, not number of bytes! */
int mas_writemem(int bank, int addr, const unsigned long* src, int len)
{
int ret = 0;
int i, j;
unsigned char buf[60];
const unsigned char* ptr = (const unsigned char*)src;
i2c_begin();
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = bank?MAS_CMD_WRITE_D1_MEM:MAS_CMD_WRITE_D0_MEM;
buf[i++] = 0x00;
buf[i++] = (len & 0xff00) >> 8;
buf[i++] = len & 0xff;
buf[i++] = (addr & 0xff00) >> 8;
buf[i++] = addr & 0xff;
j = 0;
while(len--) {
#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
buf[i++] = 0;
buf[i++] = ptr[j+1];
buf[i++] = ptr[j+2];
buf[i++] = ptr[j+3];
#else
buf[i++] = ptr[j+2];
buf[i++] = ptr[j+3];
buf[i++] = 0;
buf[i++] = ptr[j+1];
#endif
j += 4;
}
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,i))
{
ret = -1;
}
i2c_end();
return ret;
}
int mas_readreg(int reg)
{
int ret = 0;
unsigned char buf[16];
unsigned long value;
i2c_begin();
buf[0] = MAS_DATA_WRITE;
buf[1] = MAS_CMD_READ_REG | (reg >> 4);
buf[2] = (reg & 0x0f) << 4;
/* send read command */
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
ret = -1;
}
else
{
if(mas_devread(&value, 1))
{
ret = -2;
}
else
{
ret = value;
}
}
i2c_end();
return ret;
}
int mas_writereg(int reg, unsigned int val)
{
int ret = 0;
unsigned char buf[5];
i2c_begin();
buf[0] = MAS_DATA_WRITE;
buf[1] = MAS_CMD_WRITE_REG | (reg >> 4);
#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
buf[2] = ((reg & 0x0f) << 4) | (val >> 16 & 0x0f);
buf[3] = (val >> 8) & 0xff;
buf[4] = val & 0xff;
#else
buf[2] = ((reg & 0x0f) << 4) | (val & 0x0f);
buf[3] = (val >> 12) & 0xff;
buf[4] = (val >> 4) & 0xff;
#endif
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,5))
{
ret = -1;
}
i2c_end();
return ret;
}
/* note: 'len' is number of 32-bit words, not number of bytes! */
static int mas_devread(unsigned long *dest, int len)
{
int ret = 0;
unsigned char* ptr = (unsigned char*)dest;
int i;
/* handle read-back */
/* Remember, the MAS values are only 20 bits, so we set
the upper 12 bits to 0 */
i2c_start();
i2c_outb(MAS_DEV_WRITE);
if (i2c_getack()) {
i2c_outb(MAS_DATA_READ);
if (i2c_getack()) {
i2c_start();
i2c_outb(MAS_DEV_READ);
if (i2c_getack()) {
for (i=0;len;i++) {
len--;
#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
i2c_inb(0); /* Dummy read */
ptr[i*4+0] = 0;
ptr[i*4+1] = i2c_inb(0) & 0x0f;
ptr[i*4+2] = i2c_inb(0);
if(len)
ptr[i*4+3] = i2c_inb(0);
else
ptr[i*4+3] = i2c_inb(1); /* NAK the last byte */
#else
ptr[i*4+2] = i2c_inb(0);
ptr[i*4+3] = i2c_inb(0);
ptr[i*4+0] = i2c_inb(0);
if(len)
ptr[i*4+1] = i2c_inb(0);
else
ptr[i*4+1] = i2c_inb(1); /* NAK the last byte */
#endif
}
}
else
ret = -3;
}
else
ret = -2;
}
else
ret = -1;
i2c_stop();
return ret;
}
void mas_reset(void)
{
or_b(0x01, &PAIORH);
#if CONFIG_CODEC == MAS3507D
/* PB5 is "MAS enable". make it GPIO output and high */
PBCR2 &= ~0x0c00;
or_b(0x20, &PBIORL);
or_b(0x20, &PBDRL);
and_b(~0x01, &PADRH);
sleep(HZ/100);
or_b(0x01, &PADRH);
sleep(HZ/5);
#elif (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
if (HW_MASK & ATA_ADDRESS_200)
{
and_b(~0x01, &PADRH);
sleep(HZ/100);
or_b(0x01, &PADRH);
sleep(HZ/5);
}
else
{
/* Older recorder models don't invert the POR signal */
or_b(0x01, &PADRH);
sleep(HZ/100);
and_b(~0x01, &PADRH);
sleep(HZ/5);
}
#endif
}
#if (CONFIG_CODEC == MAS3587F) || (CONFIG_CODEC == MAS3539F)
int mas_direct_config_read(unsigned char reg)
{
int ret = 0;
unsigned char tmp[2];
i2c_begin();
i2c_start();
i2c_outb(MAS_DEV_WRITE);
if (i2c_getack()) {
i2c_outb(reg);
if (i2c_getack()) {
i2c_start();
i2c_outb(MAS_DEV_READ);
if (i2c_getack()) {
tmp[0] = i2c_inb(0);
tmp[1] = i2c_inb(1); /* NAK the last byte */
ret = (tmp[0] << 8) | tmp[1];
}
else
ret = -3;
}
else
ret = -2;
}
else
ret = -1;
i2c_stop();
i2c_end();
return ret;
}
int mas_direct_config_write(unsigned char reg, unsigned int val)
{
int ret = 0;
unsigned char buf[3];
i2c_begin();
buf[0] = reg;
buf[1] = (val >> 8) & 0xff;
buf[2] = val & 0xff;
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
ret = -1;
}
i2c_end();
return ret;
}
int mas_codec_writereg(int reg, unsigned int val)
{
int ret = 0;
unsigned char buf[5];
i2c_begin();
buf[0] = MAS_CODEC_WRITE;
buf[1] = (reg >> 8) & 0xff;
buf[2] = reg & 0xff;
buf[3] = (val >> 8) & 0xff;
buf[4] = val & 0xff;
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,5))
{
ret = -1;
}
i2c_end();
return ret;
}
int mas_codec_readreg(int reg)
{
int ret = 0;
unsigned char buf[16];
unsigned char tmp[2];
i2c_begin();
buf[0] = MAS_CODEC_WRITE;
buf[1] = (reg >> 8) & 0xff;
buf[2] = reg & 0xff;
/* send read command */
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
ret = -1;
}
else
{
i2c_start();
i2c_outb(MAS_DEV_WRITE);
if (i2c_getack()) {
i2c_outb(MAS_CODEC_READ);
if (i2c_getack()) {
i2c_start();
i2c_outb(MAS_DEV_READ);
if (i2c_getack()) {
tmp[0] = i2c_inb(0);
tmp[1] = i2c_inb(1); /* NAK the last byte */
ret = (tmp[0] << 8) | tmp[1];
}
else
ret = -4;
}
else
ret = -3;
}
else
ret = -2;
i2c_stop();
}
i2c_end();
return ret;
}
unsigned long mas_readver(void)
{
int ret = 0;
unsigned char buf[16];
unsigned long value;
i2c_begin();
buf[0] = MAS_DATA_WRITE;
buf[1] = MAS_CMD_READ_IC_VER;
buf[2] = 0;
/* send read command */
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
ret = -1;
}
else
{
if(mas_devread(&value, 1))
{
ret = -2;
}
else
{
ret = value;
}
}
i2c_end();
return ret;
}
#endif
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