+enum usb_charger_type sprd_pmic_detect_charger_type(struct device *dev)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ struct sprd_pmic *ddata = spi_get_drvdata(spi);
+ const struct sprd_pmic_data *pdata = ddata->pdata;
+ enum usb_charger_type type;
+ u32 val;
+ int ret;
+
+ ret = regmap_read_poll_timeout(ddata->regmap, pdata->charger_det, val,
+ (val & SPRD_PMIC_CHG_DET_DONE),
+ SPRD_PMIC_CHG_DET_DELAY_US,
+ SPRD_PMIC_CHG_DET_TIMEOUT);
+ if (ret) {
+ dev_err(&spi->dev, "failed to detect charger type\n");
+ return UNKNOWN_TYPE;
+ }
+
+ switch (val & SPRD_PMIC_CHG_TYPE_MASK) {
+ case SPRD_PMIC_CDP_TYPE:
+ type = CDP_TYPE;
+ break;
+ case SPRD_PMIC_DCP_TYPE:
+ type = DCP_TYPE;
+ break;
+ case SPRD_PMIC_SDP_TYPE:
+ type = SDP_TYPE;
+ break;
+ default:
+ type = UNKNOWN_TYPE;
+ break;
+ }
+
+ return type;
+}
+EXPORT_SYMBOL_GPL(sprd_pmic_detect_charger_type);
+