msecs_to_jiffies(JITTER_DELAY));
}
+static int gather_samples(struct s3c_adc_client *client, int num, int channel)
+{
+ int value, i;
+
+ /* default to 1 if nothing is set */
+ if (num < 1)
+ num = 1;
+
+ value = 0;
+ for (i = 0; i < num; i++)
+ value += s3c_adc_read(client, channel);
+ value /= num;
+
+ return value;
+}
+
static enum power_supply_property s3c_adc_backup_bat_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_MIN,
if (bat->volt_value < 0 ||
jiffies_to_msecs(jiffies - bat->timestamp) >
BAT_POLL_INTERVAL) {
- bat->volt_value = s3c_adc_read(bat->client,
+ bat->volt_value = gather_samples(bat->client,
+ bat->pdata->backup_volt_samples,
bat->pdata->backup_volt_channel);
bat->volt_value *= bat->pdata->backup_volt_mult;
bat->timestamp = jiffies;
if (bat->volt_value < 0 || bat->cur_value < 0 ||
jiffies_to_msecs(jiffies - bat->timestamp) >
BAT_POLL_INTERVAL) {
- bat->volt_value = s3c_adc_read(bat->client,
+ bat->volt_value = gather_samples(bat->client,
+ bat->pdata->volt_samples,
bat->pdata->volt_channel) * bat->pdata->volt_mult;
- bat->cur_value = s3c_adc_read(bat->client,
+ bat->cur_value = gather_samples(bat->client,
+ bat->pdata->current_samples,
bat->pdata->current_channel) * bat->pdata->current_mult;
bat->timestamp = jiffies;
}
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;