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HDD16X0: fix voltage values and simplify voltage calculation.

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Change-Id: If3156c3d86145c66bc81e7cd371709ad91b8ee3c
This commit is contained in:
Szymon Dziok 2016-03-13 20:30:29 +01:00
parent 78311e07c3
commit 663abe3027
1 changed files with 6 additions and 15 deletions
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21
firmware/target/arm/philips/hdd1630/powermgmt-hdd1630.c
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@ -31,42 +31,33 @@
const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
{
3550
3500
};
const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
{
3500
3400
};
/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
{
{ 3480, 3550, 3590, 3610, 3630, 3650, 3700, 3760, 3800, 3910, 3990 },
{ 3400, 3550, 3630, 3690 ,3730, 3770, 3810, 3850, 3890, 3930, 3980 },
};
#if CONFIG_CHARGING
/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
const unsigned short percent_to_volt_charge[11] =
{
3480, 3550, 3590, 3610, 3630, 3650, 3700, 3760, 3800, 3910, 3990
3400, 3650, 3822, 3910 ,3950, 3990, 4030, 4070, 4110, 4150, 4200
};
#endif /* CONFIG_CHARGING */
#define BATTERY_SCALE_FACTOR 4200
#define BATTERY_SCALE_FACTOR 4536
/* full-scale ADC readout (2^10) in millivolt */
/* Returns battery voltage from ADC [millivolts] */
int _battery_voltage(void)
{
/* return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10; */
/* This may be overly complicated (pulled from the OF) */
int lo = 0;
int val = adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR;
SMLAL(lo, val, 0x8a42f871, val);
val>>= 9;
val -= (val >> 31);
return val;
return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
}