diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2014-04-19 00:22:00 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-05-05 10:59:53 +0100 |
| commit | cd5b700f998d9e1d8e6dbc62aeb0351bb2216e22 (patch) | |
| tree | bc9e26999e72d727a886713ae18d2f1f84497c1a /drivers | |
| parent | 6fe588e59935f3cb3a1e1cd3d49fa756f28cb2b3 (diff) | |
iio: hid-sensors: Pressure: 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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/pressure/hid-sensor-press.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c index 39df50c45dab..1cd190c73788 100644 --- a/drivers/iio/pressure/hid-sensor-press.c +++ b/drivers/iio/pressure/hid-sensor-press.c @@ -21,6 +21,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/slab.h> +#include <linux/delay.h> #include <linux/hid-sensor-hub.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> @@ -79,6 +80,7 @@ static int press_read_raw(struct iio_dev *indio_dev, u32 address; int ret; int ret_type; + s32 poll_value; *val = 0; *val2 = 0; @@ -94,12 +96,23 @@ static int press_read_raw(struct iio_dev *indio_dev, report_id = -1; break; } - if (report_id >= 0) + if (report_id >= 0) { + poll_value = hid_sensor_read_poll_value( + &press_state->common_attributes); + if (poll_value < 0) + return -EINVAL; + hid_sensor_power_state(&press_state->common_attributes, + true); + + msleep_interruptible(poll_value * 2); + *val = sensor_hub_input_attr_get_raw_value( press_state->common_attributes.hsdev, HID_USAGE_SENSOR_PRESSURE, address, report_id); - else { + hid_sensor_power_state(&press_state->common_attributes, + false); + } else { *val = 0; return -EINVAL; } |