devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

Now uses i2c_begin/end

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1147 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-06-24 12:35:37 +00:00
parent b38c2d996d
commit e1cb054fa0
2 changed files with 129 additions and 85 deletions
Download patch file Download diff file Expand all files Collapse all files

38
firmware/drivers/dac.c
View file

@ -22,23 +22,26 @@
int dac_volume(unsigned int volume)
{
int i;
unsigned char buf[16];
int ret = 0;
unsigned char buf[3];
i2c_begin();
if(volume > 0x38)
volume = 0x38;
i=0;
buf[i++] = DAC_REG_WRITE | DAC_AVOL;
buf[i++] = (volume & 0x3f) | 0x40; /* Deemphasis ON */
buf[i++] = volume & 0x3f;
buf[0] = DAC_REG_WRITE | DAC_AVOL;
buf[1] = (volume & 0x3f) | 0x40; /* Deemphasis ON */
buf[2] = volume & 0x3f;
/* send read command */
if (i2c_write(DAC_DEV_WRITE,buf,i))
if (i2c_write(DAC_DEV_WRITE,buf,3))
{
return -1;
ret = -1;
}
return 0;
i2c_end();
return ret;
}
/******************************************************************
@ -52,17 +55,20 @@ int dac_volume(unsigned int volume)
******************************************************************/
int dac_config(int value)
{
int i;
unsigned char buf[16];
int ret = 0;
unsigned char buf[2];
i=0;
buf[i++] = DAC_REG_WRITE | DAC_GCFG;
buf[i++] = value;
i2c_begin();
buf[0] = DAC_REG_WRITE | DAC_GCFG;
buf[1] = value;
/* send read command */
if (i2c_write(DAC_DEV_WRITE,buf,i))
if (i2c_write(DAC_DEV_WRITE,buf,2))
{
return -1;
ret = -1;
}
i2c_end();
return 0;
}

176
firmware/drivers/mas.c
View file

@ -20,10 +20,14 @@
#include "debug.h"
#include "mas.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);
@ -47,59 +51,69 @@ int mas_default_read(unsigned short *buf)
i2c_stop();
i2c_end();
return ret;
}
int mas_run(unsigned short address)
{
int i;
unsigned char buf[16];
int ret = 0;
unsigned char buf[3];
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = address << 8;
buf[i++] = address & 0xff;
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,i))
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
return -1;
ret = -1;
}
return 0;
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 i;
unsigned char buf[16];
int ret = 0;
unsigned char buf[7];
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = bank?MAS_CMD_READ_D1_MEM:MAS_CMD_READ_D0_MEM;
buf[i++] = 0x00;
buf[i++] = (len & 0xff00) >> 8;
buf[i++] = len & 0xff;
buf[i++] = (addr & 0xff00) >> 8;
buf[i++] = addr & 0xff;
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,i))
if (i2c_write(MAS_DEV_WRITE,buf,7))
{
return -1;
ret = -1;
}
return mas_devread(dest, len);
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, unsigned long* src, int len)
{
int ret = 0;
int i, j;
unsigned char buf[60];
unsigned char* ptr = (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;
@ -128,62 +142,74 @@ int mas_writemem(int bank, int addr, unsigned long* src, int len)
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,i))
{
return -1;
ret = -1;
}
return 0;
i2c_end();
return ret;
}
int mas_readreg(int reg)
{
int i;
int ret = 0;
unsigned char buf[16];
unsigned long value;
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = MAS_CMD_READ_REG | (reg >> 4);
buf[i++] = (reg & 0x0f) << 4;
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,i))
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
return -1;
ret = -1;
}
else
{
if(mas_devread(&value, 1))
{
ret = -2;
}
else
{
ret = value;
}
}
if(mas_devread(&value, 1))
{
return -2;
}
return value;
i2c_end();
return ret;
}
int mas_writereg(int reg, unsigned int val)
{
int i;
unsigned char buf[16];
int ret = 0;
unsigned char buf[5];
i=0;
buf[i++] = MAS_DATA_WRITE;
buf[i++] = MAS_CMD_WRITE_REG | (reg >> 4);
buf[i++] = ((reg & 0x0f) << 4) | (val & 0x0f);
buf[i++] = (val >> 12) & 0xff;
buf[i++] = (val >> 4) & 0xff;
i2c_begin();
buf[0] = MAS_DATA_WRITE;
buf[1] = MAS_CMD_WRITE_REG | (reg >> 4);
buf[2] = ((reg & 0x0f) << 4) | (val & 0x0f);
buf[3] = (val >> 12) & 0xff;
buf[4] = (val >> 4) & 0xff;
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,i))
if (i2c_write(MAS_DEV_WRITE,buf,5))
{
return -1;
ret = -1;
}
return 0;
i2c_end();
return ret;
}
/* note: 'len' is number of 32-bit words, not number of bytes! */
int mas_devread(unsigned long *dest, int len)
static int mas_devread(unsigned long *dest, int len)
{
unsigned char* ptr = (unsigned char*)dest;
int ret = 0;
unsigned char* ptr = (unsigned char*)dest;
int i;
/* handle read-back */
@ -236,9 +262,11 @@ int mas_devread(unsigned long *dest, int len)
#ifdef ARCHOS_RECORDER
int mas_direct_config_read(unsigned char reg)
{
unsigned char tmp[2];
int ret = 0;
unsigned char tmp[2];
i2c_begin();
i2c_start();
i2c_outb(MAS_DEV_WRITE);
if (i2c_getack()) {
@ -262,13 +290,17 @@ int mas_direct_config_read(unsigned char reg)
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;
@ -276,45 +308,50 @@ int mas_direct_config_write(unsigned char reg, unsigned int val)
/* send write command */
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
return -1;
ret = -1;
}
i2c_end();
return 0;
}
int mas_codec_writereg(int reg, unsigned int val)
{
int i;
unsigned char buf[16];
int ret = 0;
unsigned char buf[5];
i=0;
buf[i++] = MAS_CODEC_WRITE;
buf[i++] = (reg >> 8) & 0xff;
buf[i++] = reg & 0xff;
buf[i++] = (val >> 8) & 0xff;
buf[i++] = val & 0xff;
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,i))
if (i2c_write(MAS_DEV_WRITE,buf,5))
{
return -1;
ret = -1;
}
return 0;
i2c_end();
return ret;
}
int mas_codec_readreg(int reg)
{
int i;
int ret = 0;
unsigned char buf[16];
unsigned char tmp[2];
i=0;
buf[i++] = MAS_CODEC_WRITE;
buf[i++] = (reg >> 8) & 0xff;
buf[i++] = reg & 0xff;
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,i))
if (i2c_write(MAS_DEV_WRITE,buf,3))
{
return -1;
}
@ -342,6 +379,7 @@ int mas_codec_readreg(int reg)
i2c_stop();
i2c_end();
return ret;
}
#endif