diff options
Diffstat (limited to 'drivers/iio/pressure/hid-sensor-press.c')
| -rw-r--r-- | drivers/iio/pressure/hid-sensor-press.c | 41 |
1 files changed, 31 insertions, 10 deletions
diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c index e0e6409aa94e..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> @@ -36,6 +37,10 @@ struct press_state { struct hid_sensor_common common_attributes; struct hid_sensor_hub_attribute_info press_attr; u32 press_data; + int scale_pre_decml; + int scale_post_decml; + int scale_precision; + int value_offset; }; /* Channel definitions */ @@ -75,6 +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; @@ -90,24 +96,35 @@ 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; } ret_type = IIO_VAL_INT; break; case IIO_CHAN_INFO_SCALE: - *val = press_state->press_attr.units; - ret_type = IIO_VAL_INT; + *val = press_state->scale_pre_decml; + *val2 = press_state->scale_post_decml; + ret_type = press_state->scale_precision; break; case IIO_CHAN_INFO_OFFSET: - *val = hid_sensor_convert_exponent( - press_state->press_attr.unit_expo); + *val = press_state->value_offset; ret_type = IIO_VAL_INT; break; case IIO_CHAN_INFO_SAMP_FREQ: @@ -176,9 +193,8 @@ static int press_proc_event(struct hid_sensor_hub_device *hsdev, struct iio_dev *indio_dev = platform_get_drvdata(priv); struct press_state *press_state = iio_priv(indio_dev); - dev_dbg(&indio_dev->dev, "press_proc_event [%d]\n", - press_state->common_attributes.data_ready); - if (press_state->common_attributes.data_ready) + dev_dbg(&indio_dev->dev, "press_proc_event\n"); + if (atomic_read(&press_state->common_attributes.data_ready)) hid_sensor_push_data(indio_dev, &press_state->press_data, sizeof(press_state->press_data)); @@ -229,6 +245,11 @@ static int press_parse_report(struct platform_device *pdev, dev_dbg(&pdev->dev, "press %x:%x\n", st->press_attr.index, st->press_attr.report_id); + st->scale_precision = hid_sensor_format_scale( + HID_USAGE_SENSOR_PRESSURE, + &st->press_attr, + &st->scale_pre_decml, &st->scale_post_decml); + /* Set Sensitivity field ids, when there is no individual modifier */ if (st->common_attributes.sensitivity.index < 0) { sensor_hub_input_get_attribute_info(hsdev, @@ -298,7 +319,7 @@ static int hid_press_probe(struct platform_device *pdev) dev_err(&pdev->dev, "failed to initialize trigger buffer\n"); goto error_free_dev_mem; } - press_state->common_attributes.data_ready = false; + atomic_set(&press_state->common_attributes.data_ready, 0); ret = hid_sensor_setup_trigger(indio_dev, name, &press_state->common_attributes); if (ret) { |