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Commit 6a63aa0a authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

staging:iio: dummy driver additions to show shared_by_dir infomask usage 



Note that as this driver has output as well as output channels an
example of info_mask_shared_by_all that makes any sense does not exist.

Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
Reviewed-by: default avatarLars-Peter Clausen <lars@metafoo.de>
parent c006ec83

drivers/staging/iio/iio_simple_dummy.c

+16 −0
Original line number Original line Diff line number Diff line
@@ -90,6 +90,11 @@ static const struct iio_chan_spec iio_dummy_channels[] = { 
		 * when converting to standard units (microvolts)

		 * when converting to standard units (microvolts)

		 */

		 */

		BIT(IIO_CHAN_INFO_SCALE),

		BIT(IIO_CHAN_INFO_SCALE),

		/*

		 * sampling_frequency

		 * The frequency in Hz at which the channels are sampled

		 */

		.info_mask_shared_by_dir = BIT(IIO_CHAN_INFO_SAMP_FREQ),

		/* The ordering of elements in the buffer via an enum */

		/* The ordering of elements in the buffer via an enum */

		.scan_index = voltage0,

		.scan_index = voltage0,

		.scan_type = { /* Description of storage in buffer */

		.scan_type = { /* Description of storage in buffer */
@@ -130,6 +135,10 @@ static const struct iio_chan_spec iio_dummy_channels[] = { 
		 * input channels of type IIO_VOLTAGE.

		 * input channels of type IIO_VOLTAGE.

		 */

		 */

		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),

		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),

		/*

		 * sampling_frequency

		 * The frequency in Hz at which the channels are sampled

		 */

		.scan_index = diffvoltage1m2,

		.scan_index = diffvoltage1m2,

		.scan_type = { /* Description of storage in buffer */

		.scan_type = { /* Description of storage in buffer */

			.sign = 's', /* signed */

			.sign = 's', /* signed */
@@ -147,6 +156,7 @@ static const struct iio_chan_spec iio_dummy_channels[] = { 
		.channel2 = 4,

		.channel2 = 4,

		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),

		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),

		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),

		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),

		.info_mask_shared_by_dir = BIT(IIO_CHAN_INFO_SAMP_FREQ),

		.scan_index = diffvoltage3m4,

		.scan_index = diffvoltage3m4,

		.scan_type = {

		.scan_type = {

			.sign = 's',

			.sign = 's',
@@ -173,6 +183,7 @@ static const struct iio_chan_spec iio_dummy_channels[] = { 
		 */

		 */

		BIT(IIO_CHAN_INFO_CALIBSCALE) |

		BIT(IIO_CHAN_INFO_CALIBSCALE) |

		BIT(IIO_CHAN_INFO_CALIBBIAS),

		BIT(IIO_CHAN_INFO_CALIBBIAS),

		.info_mask_shared_by_dir = BIT(IIO_CHAN_INFO_SAMP_FREQ),

		.scan_index = accelx,

		.scan_index = accelx,

		.scan_type = { /* Description of storage in buffer */

		.scan_type = { /* Description of storage in buffer */

			.sign = 's', /* signed */

			.sign = 's', /* signed */
@@ -272,6 +283,11 @@ static int iio_dummy_read_raw(struct iio_dev *indio_dev, 
		*val2 = st->accel_calibscale->val2;

		*val2 = st->accel_calibscale->val2;

		ret = IIO_VAL_INT_PLUS_MICRO;

		ret = IIO_VAL_INT_PLUS_MICRO;

		break;

		break;

	case IIO_CHAN_INFO_SAMP_FREQ:

		*val = 3;

		*val2 = 33;

		ret = IIO_VAL_INT_PLUS_NANO;

		break;

	default:

	default:

		break;

		break;

	}

	}