android_kernel_samsung_msm8976/include/linux/s3c_adc_battery.h
Heiko Stübner 34aed73df3 s3c_adc_battery: Average over more than one adc sample
Some sources for adc battery information provide only inaccurate results
where the read value differs from the real value with positive and negative
offsets. For such sources it can be more accurate to collect two or more
value sample and use the average of all collected values.

This patch adds pdata options volt_samples, current_samples and
backup_volt_samples to specifiy the number of samples to collect,
reads the specified number of samples and calculates the average of those.
For unset sample-number-values a default of 1 is assumed.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
2012-01-06 06:13:35 +04:00

41 lines
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C

#ifndef _S3C_ADC_BATTERY_H
#define _S3C_ADC_BATTERY_H
struct s3c_adc_bat_thresh {
int volt; /* mV */
int cur; /* mA */
int level; /* percent */
};
struct s3c_adc_bat_pdata {
int (*init)(void);
void (*exit)(void);
void (*enable_charger)(void);
void (*disable_charger)(void);
int gpio_charge_finished;
int gpio_inverted;
const struct s3c_adc_bat_thresh *lut_noac;
unsigned int lut_noac_cnt;
const struct s3c_adc_bat_thresh *lut_acin;
unsigned int lut_acin_cnt;
const unsigned int volt_channel;
const unsigned int current_channel;
const unsigned int backup_volt_channel;
const unsigned int volt_samples;
const unsigned int current_samples;
const unsigned int backup_volt_samples;
const unsigned int volt_mult;
const unsigned int current_mult;
const unsigned int backup_volt_mult;
const unsigned int internal_impedance;
const unsigned int backup_volt_max;
const unsigned int backup_volt_min;
};
#endif