int sprdchg_read_temp_adc(void)
{
#define SAMPLE_NUM 15
int cnt = pbat_data->temp_adc_sample_cnt;
if (cnt > SAMPLE_NUM) {
cnt = SAMPLE_NUM;
} else if (cnt < 1) {
cnt = 1;
}
if (pbat_data->temp_support) {
int ret, i, j, temp;
int adc_val[cnt];
struct adc_sample_data data = {
.channel_id = pbat_data->temp_adc_ch,
.channel_type = 0, /*sw */
.hw_channel_delay = 0, /*reserved */
.scale = pbat_data->temp_adc_scale, /*small scale */
.pbuf = &adc_val[0],
.sample_num = cnt,
.sample_bits = 1,
.sample_speed = 0, /*quick mode */
.signal_mode = 0, /*resistance path */
};
ret = sci_adc_get_values(&data);
WARN_ON(0 != ret);
for (j = 1; j <= cnt - 1; j++) {
for (i = 0; i < cnt - j; i++) {
if (adc_val[i] > adc_val[i + 1]) {
temp = adc_val[i];
adc_val[i] = adc_val[i + 1];
adc_val[i + 1] = temp;
}
}
}
printk("sprdchg: channel:%d,sprdchg_read_temp_adc:%d\n",
data.channel_id, adc_val[cnt / 2]);
return adc_val[cnt / 2];
} else {
return 3000;
/*
* sci_adc_get_value_by_isen - read adc value by current sense
* @channel: adc software channel id;
* @scale: adc sample scale, 0:little scale, 1:big scale;
* @current: adc current isense(uA), 1.25uA/step, max 40uA;
*
* returns: adc value
*/
int sci_adc_get_value_by_isen(unsigned int channel, int scale, int isen)
{
#define ADC_MESURE_NUMBER 15
struct adc_sample_data adc;
int results[ADC_MESURE_NUMBER + 1] = {0};
int ret = 0, i = 0;
/* Fixme: only external adc channel used */
BUG_ON(channel > 3);
WARN_ON(isen > 40);
adc.channel_id = channel;
adc.channel_type = 0;
adc.hw_channel_delay = 0;
adc.pbuf = &results[0];
adc.sample_bits = 1;
adc.sample_num = ADC_MESURE_NUMBER;
adc.sample_speed = 0;
adc.scale = scale;
adc.signal_mode = 0;
sci_adc_set_current(1, isen);
if(0 == sci_adc_get_values(&adc)) {
ret = __average(&results[ADC_MESURE_NUMBER/5],
(ADC_MESURE_NUMBER - ADC_MESURE_NUMBER * 2 /5));
}
sci_adc_set_current(0, 0);
for(i = 0; i < ARRAY_SIZE(results); i++) {
printk("%d\t", results[i]);
}
printk("\n%s() adc[%d] value: %d\n", __func__, channel, ret);
return ret;
}
