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Updated extended battery temperature handling.

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This commit is contained in:
Jon Benson 2010-10-09 14:18:33 +11:00
parent fce8064242
commit 92a66f05fa
1 changed files with 6 additions and 14 deletions
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20
arch/arm/mach-msm/board-htcleo-battery.c
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@ -373,35 +373,27 @@ static void htcleo_parse_data(uint32_t raw_status, u8 *raw, struct battery_statu
/* Get Temperature */
n = ((raw[0] << 8) | (raw[1]));
short tRaw = n;
// TODO: This isn't ideal but gives ROUGHLY (within about 3C) the correct values and is better than what I had previously
if ( PC == LEO_EXTENDED_BATTERY_CAPACITY ) n *= 7;
n /= 16;
// printk("temp = %x\n", n);
double v;
if (n > 2047 || n == 0)
{
s->temp_C = 250;
}
else
{
v = 0.021277 * (300.0 / (2047.0 / n - 1.0));
/* The following change is presuming the values I modified are based on the packaged id of the battery.
Whilst I am confident of my percentage calculation changes above I am not confident of this one though
user feedback seems to indicate it is working */
if ( ACR > 9000 )
{
s->temp_C = (1.0 / ((log(v) * 0.000290698) + 0.003354016) - 3.15);
}
else
{
s->temp_C = 10 * (1.0 / ((log(v) * 0.000290698) + 0.003354016) - 273.15);
}
double v = 0.021277 * (300.0 / (2047.0 / n - 1.0));
s->temp_C = 10 * (1.0 / ((log(v) * 0.000290698) + 0.003354016) - 273.15);
}
if (s->temp_C < -250)
{
s->temp_C = -250;
}
printk("PC=%d ACR=%d RAAC=%d T=%d, TRAW=%hd\n", PC, ACR, s->percentage, s->temp_C);
printk("PC=%d ACR=%d RAAC=%d T=%d, TRAW=%hd\n", PC, ACR, s->percentage, s->temp_C, tRaw);
}
static int htcleo_battery_read_status(struct htcleo_device_info *di)