static int sec_bat_check_cable_callback(void)
{
struct usb_gadget *gadget =
platform_get_drvdata(&s3c_device_usbgadget);
bool attach = true;
int adc_1, adc_2, avg_adc;
if (!charger_supply) {
charger_supply = power_supply_get_by_name("sec-charger");
if (!charger_supply)
pr_err("%s: failed to get power supplies\n", __func__);
}
/* ADC check margin (300~500ms) */
msleep(150);
usb_switch_lock();
usb_switch_set_path(USB_PATH_ADCCHECK);
adc_1 = stmpe811_get_adc_data(6);
adc_2 = stmpe811_get_adc_data(6);
avg_adc = (adc_1 + adc_2)/2;
usb_switch_clr_path(USB_PATH_ADCCHECK);
usb_switch_unlock();
pr_info("[BAT] %s: Adc value (%d)\n", __func__, avg_adc);
attach = !gpio_get_value(GPIO_TA_nCONNECTED) ? true : false;
if(attach) {
if(avg_adc > TA_ADC_LOW)
current_cable_type = POWER_SUPPLY_TYPE_MAINS;
else
current_cable_type = POWER_SUPPLY_TYPE_USB;
}
else
current_cable_type = POWER_SUPPLY_TYPE_BATTERY;
/* temp code : only set vbus enable when usb attaced */
if (gadget) {
if (attach)
usb_gadget_vbus_connect(gadget);
else
usb_gadget_vbus_disconnect(gadget);
}
#if 0
pr_info("%s: Cable type(%s), Attach(%d), Adc(%d)\n",
__func__,
current_cable_type == POWER_SUPPLY_TYPE_BATTERY ?
"Battery" : current_cable_type == POWER_SUPPLY_TYPE_USB ?
"USB" : "TA", attach, adc);
#endif
return current_cable_type;
}
static int acc_get_adc_accessroy_id(struct s3c_adc_client *padc)
{
int adc_data;
#if defined(CONFIG_STMPE811_ADC)
adc_data = stmpe811_get_adc_data(ACCESSORY_ID_ADC_CH);
#else
adc_data = s3c_adc_read(padc, ACCESSORY_ID_ADC_CH);
#endif
/* ACC_CONDEV_DBG("[ACC] adc_data = %d..\n",adc_data); */
return adc_data;
}
static int sec_bat_adc_ic_read(unsigned int channel)
{
int data = 0;
int max_voltage = 3300;
switch (channel) {
case SEC_BAT_ADC_CHANNEL_CABLE_CHECK:
data = stmpe811_get_adc_data(SMTPE811_CHANNEL_ADC_CHECK_1);
data = data * max_voltage / 4095; /* 4096 ? */
break;
}
return data;
}
