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iio: hid-sensors: Compass 3D: Raw read support
Added support for raw reading of channel. If the sensor is powered off, it will turn on for reading value Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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1eef062042
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@ -22,6 +22,7 @@
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/hid-sensor-hub.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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@ -60,6 +61,7 @@ static const struct iio_chan_spec magn_3d_channels[] = {
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.type = IIO_MAGN,
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.modified = 1,
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.channel2 = IIO_MOD_X,
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
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.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
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BIT(IIO_CHAN_INFO_SCALE) |
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BIT(IIO_CHAN_INFO_SAMP_FREQ) |
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@ -69,6 +71,7 @@ static const struct iio_chan_spec magn_3d_channels[] = {
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.type = IIO_MAGN,
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.modified = 1,
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.channel2 = IIO_MOD_Y,
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
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.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
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BIT(IIO_CHAN_INFO_SCALE) |
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BIT(IIO_CHAN_INFO_SAMP_FREQ) |
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@ -78,6 +81,7 @@ static const struct iio_chan_spec magn_3d_channels[] = {
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.type = IIO_MAGN,
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.modified = 1,
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.channel2 = IIO_MOD_Z,
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.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
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.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
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BIT(IIO_CHAN_INFO_SCALE) |
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BIT(IIO_CHAN_INFO_SAMP_FREQ) |
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@ -108,11 +112,20 @@ static int magn_3d_read_raw(struct iio_dev *indio_dev,
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u32 address;
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int ret;
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int ret_type;
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s32 poll_value;
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*val = 0;
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*val2 = 0;
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switch (mask) {
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case 0:
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poll_value = hid_sensor_read_poll_value(
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&magn_state->common_attributes);
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if (poll_value < 0)
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return -EINVAL;
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hid_sensor_power_state(&magn_state->common_attributes, true);
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msleep_interruptible(poll_value * 2);
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report_id =
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magn_state->magn[chan->scan_index].report_id;
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address = magn_3d_addresses[chan->scan_index];
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@ -123,8 +136,11 @@ static int magn_3d_read_raw(struct iio_dev *indio_dev,
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report_id);
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else {
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*val = 0;
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hid_sensor_power_state(&magn_state->common_attributes,
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false);
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return -EINVAL;
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}
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hid_sensor_power_state(&magn_state->common_attributes, false);
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ret_type = IIO_VAL_INT;
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break;
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case IIO_CHAN_INFO_SCALE:
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