lkml.org 
[lkml]   [2020]   [Feb]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RESEND PATCH] mfd: sc27xx: Add USB charger type detection support
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

[...]

> +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

\
 
 \ /
  Last update: 2020-02-24 12:39    [W:0.055 / U:0.632 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site