int nmi_i2c_read(unsigned char adr, unsigned char *b, unsigned long sz)
{
int i;
i2c_begin();
i2c_write_byte((adr << 1)|0x1);
for(i = 0; i < sz; i++) {
b[i] = i2c_read_byte();
if(i == sz-1)
i2c_write_ask(1);
else
i2c_write_ask(0);
}
i2c_end();
return 1;
}
i2c_ack i2c_read_2byte(int bus_id, char chip_addr, unsigned int sub_addr, char *buf, unsigned int size)
{
#ifdef FLY_VIDEO_BOARD_V3
int ret_rec = 0;
ret_rec = SOC_I2C_Rec_2B_SubAddr(3, TC358746_I2C_ChipAdd, sub_addr, buf, size);
//lidbg("\n************i2c_read_2byte ret_rec=%d *****************\n",ret_rec);
if(ret_rec > 0)
{
return ACK;
}
else
{
return NACK;
}
#else
u8 i;
mutex_lock(&io_i2c_lock);
i2c_init();
// start transmite
i2c_begin();//msg 0>>
i2c_write_chip_addr(chip_addr, hkj_WRITE) ;
if (i2c_read_ack () == NACK)
{
i2c_stop();
i2c_free();
lidbg(" chip_addr devices is not ACK------i2c_write_chip_addr----r--\r\n");
mutex_unlock(&io_i2c_lock);
return NACK;
}
//i2c_stop();
// restart transmite
// send message to mm_i2c device to transmite data
i2c_write(sub_addr >> 8) ;
if (i2c_read_ack () == NACK)
{
i2c_stop();
i2c_free();
lidbg(" chip_addr devices is not ACK-----subadder1-------\r\n");
mutex_unlock(&io_i2c_lock);
return NACK;
}
i2c_write(sub_addr) ;
if (i2c_read_ack () == NACK)
{
i2c_stop();
i2c_free();
lidbg(" chip_addr devices is not ACK------subadder0------\r\n");
mutex_unlock(&io_i2c_lock);
return NACK;
}
i2c_stop();//msg 0<<
// start transmite
i2c_begin();//msg 1>>
i2c_write_chip_addr(chip_addr, hkj_READ) ;
if (i2c_read_ack () == NACK)
{
i2c_stop();
i2c_free();
lidbg(" chip_addr devices is not ACK----- i2c_write_chip_addr-------\r\n");
mutex_unlock(&io_i2c_lock);
return NACK;
}
// transmite data
for(i = 0; i < size; i++)
{
buf[i] = i2c_read();
( i == (size - 1) ) ? i2c_write_ask(NACK) : i2c_write_ask(ACK);
}
// stop transmite
i2c_stop();//msg 1<<
i2c_free();
mutex_unlock(&io_i2c_lock);
return ACK;
#endif
}
i2c_ack i2c_read_byte(int bus_id, char chip_addr, unsigned int sub_addr, char *buf, unsigned int size)
{
#ifdef FLY_VIDEO_BOARD_V3
int ret = 0;
//ret=i2c_api_do_recv(3,chip_addr, sub_addr , buf, size);
ret = SOC_I2C_Rec(3, chip_addr, sub_addr , buf, size);
//lidbg("\n************ i2c_read_byte =%d*******\n",ret);
//if(ret==size){
if(ret > 0)
{
#ifdef DEBUG_ACK
return NACK;
#else
return ACK;
#endif
}
else
{
return NACK;
}
#else
u8 i;
mutex_lock(&io_i2c_lock);
i2c_init();
// start transmite
i2c_begin();
i2c_write_chip_addr(chip_addr, hkj_WRITE) ;
if (i2c_read_ack () == NACK)
{
i2c_stop();
i2c_free();
lidbg("at read funtion :i2c_write_chip_addr(%.2x, %d) ; is not ACK\n", chip_addr, hkj_WRITE);
mutex_unlock(&io_i2c_lock);
return NACK;
}
//i2c_stop();
// restart transmite
//i2c_begin();
// send message to mm_i2c device to transmite data
i2c_write(sub_addr) ;
if (i2c_read_ack () == NACK)
{
i2c_stop();
i2c_free();
lidbg("at read funtion :i2c_write (%.2x) is not ACK\n", sub_addr & 0xff);
mutex_unlock(&io_i2c_lock);
return NACK;
}
i2c_stop();
// start transmite
i2c_begin();
i2c_write_chip_addr(chip_addr, hkj_READ) ;
if (i2c_read_ack() == NACK)
{
i2c_stop();
i2c_free();
lidbg("at read funtion :i2c_write_chip_addr(%.2x, %d) ; is not ACK\n", sub_addr, hkj_READ);
mutex_unlock(&io_i2c_lock);
return NACK;
}
// transmite data
for(i = 0; i < size; i++)
{
buf[i] = i2c_read();
( i == (size - 1) ) ? i2c_write_ask(NACK) : i2c_write_ask(ACK);
}
// stop transmite
i2c_stop();
i2c_free();
mutex_unlock(&io_i2c_lock);
return ACK;
#endif
}
