static int po188_read_adc( int channel_no)
{
unsigned char reserve = 0;
int value = 0;
value = k3_adc_get_value(channel_no, &reserve);
/*
if (value >= 0)
{
po188_driver.voltage_now = value;
}
else //if error, rerurn error code and ignore the value
{
po188_driver.voltage_now = 0;
}*/
return value;
}
/* getting the major version by channel number */
static int hw_major_version_get(int channel_no)
{
unsigned char reserve = 0;
int value = 0;
int ret = 0;
/* open adc channel */
ret = k3_adc_open_channel(channel_no);
if (ret < 0)
{
printk(KERN_ERR "%s:open adc channel failed(ret=%d channel_no=%d)\n", __func__, ret, channel_no);
return ret;
}
/* get the volatge value by adc channel */
value = k3_adc_get_value(channel_no, &reserve);
/* close the adc channel */
ret = k3_adc_close_channal(channel_no);
if (ret < 0)
{
printk(KERN_ERR "%s:close adc channel failed(ret=%d channel_no=%d)\n", __func__, ret, channel_no);
return ret;
}
return value;
}
