Messages in this thread | | | Date | Mon, 24 Feb 2020 11:39:26 +0000 | From | Lee Jones <> | Subject | Re: [RESEND PATCH] mfd: sc27xx: Add USB charger type detection support |
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On Mon, 17 Feb 2020, Baolin Wang wrote:
> The Spreadtrum SC27XX series PMICs supply the USB charger type detection > function, and related registers are located on the PMIC global registers > region, thus we implement and export this function in the MFD driver for > users to get the USB charger type. > > Signed-off-by: Baolin Wang <baolin.wang7@gmail.com> > --- > drivers/mfd/sprd-sc27xx-spi.c | 52 +++++++++++++++++++++++++++++++++++++++ > include/linux/mfd/sc27xx-pmic.h | 7 ++++++ > 2 files changed, 59 insertions(+) > create mode 100644 include/linux/mfd/sc27xx-pmic.h
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> +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);
Where is this called from?
Why isn't the charger type detected in the charger driver?
-- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
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