Re: [PATCH v3 1/2] iio: vadc: Qualcomm SPMI PMIC voltage ADC driver

Ivan T. Ivanov
2014-09-25T12:47:05Z

Hi Stan, few comment bellow.

On Wed, 2014-09-24 at 15:56 +0300, Stanimir Varbanov wrote:
> The voltage ADC is peripheral of Qualcomm SPMI PMIC chips. It has
> 15bits resolution and register space inside PMIC accessible across
> SPMI bus.
>
> The vadc driver registers itself through IIO interface.
>
> Signed-off-by: Stanimir Varbanov <svarbanov-NEYub+7Iv8PQT0dZR+AlfA@public.gmane.org>
> Signed-off-by: Ivan T. Ivanov <iivanov-NEYub+7Iv8PQT0dZR+AlfA@public.gmane.org>
> ---
> drivers/iio/adc/Kconfig | 10 +
> drivers/iio/adc/Makefile | 1 +
> drivers/iio/adc/qcom-spmi-vadc.c | 1029 +++++++++++++++++++++++++
> include/dt-bindings/iio/qcom,spmi-pmic-vadc.h | 119 +++
> 4 files changed, 1159 insertions(+), 0 deletions(-)
> create mode 100644 drivers/iio/adc/qcom-spmi-vadc.c
> create mode 100644 include/dt-bindings/iio/qcom,spmi-pmic-vadc.h
>
> diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
> index 11b048a..ec48360 100644
> --- a/drivers/iio/adc/Kconfig
> +++ b/drivers/iio/adc/Kconfig
> @@ -206,6 +206,16 @@ config NAU7802
> To compile this driver as a module, choose M here: the
> module will be called nau7802.
>
> +config QCOM_SPMI_VADC
> + tristate "Qualcomm SPMI PMIC voltage ADC"
> + depends on SPMI

+ select REGMAP_SPMI

<snip>

> +
> +static int vadc_read(struct vadc_priv *vadc, u16 offset, u8 *data)
> +{
> + return regmap_bulk_read(vadc->regmap, vadc->base + offset, data, 1);

just regmap_read() ?

> +}
> +

General comment, most of the dev_dbg looks like legitimate dev_err's to me.

Regards,
Ivan