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Commit fa7662e1 authored by Nikita Yushchenko's avatar Nikita Yushchenko Committed by Jonathan Cameron
Browse files

iio: hi8435: add raw access 



With current event-only driver, it is not possible for user space
application to know current senses if they don't change since
application starts.

Address that by adding raw access to channels.

Signed-off-by: default avatarNikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 14b39dce

drivers/iio/adc/hi8435.c

+22 −0
Original line number Diff line number Diff line
@@ -105,6 +105,26 @@ static int hi8435_writew(struct hi8435_priv *priv, u8 reg, u16 val) 
	return spi_write(priv->spi, priv->reg_buffer, 3);

}



static int hi8435_read_raw(struct iio_dev *idev,

			   const struct iio_chan_spec *chan,

			   int *val, int *val2, long mask)

{

	struct hi8435_priv *priv = iio_priv(idev);

	u32 tmp;

	int ret;



	switch (mask) {

	case IIO_CHAN_INFO_RAW:

		ret = hi8435_readl(priv, HI8435_SO31_0_REG, &tmp);

		if (ret < 0)

			return ret;

		*val = !!(tmp & BIT(chan->channel));

		return IIO_VAL_INT;

	default:

		return -EINVAL;

	}

}



static int hi8435_read_event_config(struct iio_dev *idev,

				    const struct iio_chan_spec *chan,

				    enum iio_event_type type,
@@ -333,6 +353,7 @@ static const struct iio_chan_spec_ext_info hi8435_ext_info[] = { 
	.type = IIO_VOLTAGE,				\

	.indexed = 1,					\

	.channel = num,					\

	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),	\

	.event_spec = hi8435_events,			\

	.num_event_specs = ARRAY_SIZE(hi8435_events),	\

	.ext_info = hi8435_ext_info,			\
@@ -376,6 +397,7 @@ static const struct iio_chan_spec hi8435_channels[] = { 


static const struct iio_info hi8435_info = {

	.driver_module = THIS_MODULE,

	.read_raw = hi8435_read_raw,

	.read_event_config = &hi8435_read_event_config,

	.write_event_config = hi8435_write_event_config,

	.read_event_value = &hi8435_read_event_value,