bool ide_powered(void)
{
int level = disable_irq_save();
int value = pcf50606_read(0x3c);
restore_irq(level);
return (value & 0x07) != 0;
}
unsigned short adc_read(int channel)
{
static const int adcc2_parms[] =
{
[ADC_BUTTONS] = 0x81 | (5 << 1), /* 8b - ADCIN2 */
[ADC_REMOTE] = 0x81 | (6 << 1), /* 8b - ADCIN3 */
[ADC_BATTERY] = 0x01 | (0 << 1), /* 10b - BATVOLT, resistive divider */
};
int level;
int data;
level = disable_irq_save();
pcf50606_write(0x2f, adcc2_parms[channel]);
data = pcf50606_read(0x30);
if (channel == ADC_BATTERY)
data = get_10bit_voltage(data);
restore_irq(level);
return (unsigned short)data;
}
/* get remaining 2 bits and return 10 bit value */
static int get_10bit_voltage(int msbdata)
{
int data = msbdata << 2;
data |= pcf50606_read(0x31) & 0x3;
return data;
}
