Report iio motion events to iio subsystem
Signed-off-by: Sean Nyekjaer <sean@xxxxxxxxxx>
---
Changes since v4:
* Updated bitmask as pr Jonathans comments
Changes since v5:
* None
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 5 ++
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 70 ++++++++++++++++++++
2 files changed, 75 insertions(+)
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index d04473861fba..015b837f366f 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -186,6 +186,11 @@ struct st_lsm6dsx_shub_settings {
struct st_lsm6dsx_event_settings {
struct st_lsm6dsx_reg enable_reg;
struct st_lsm6dsx_reg wakeup_reg;
+ u8 wakeup_src_reg;
+ u8 wakeup_src_status_mask;
+ u8 wakeup_src_z_mask;
+ u8 wakeup_src_y_mask;
+ u8 wakeup_src_x_mask;
};
enum st_lsm6dsx_ext_sensor_id {
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 5b8bcd9cc4d2..bd5c7c65a519 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -48,6 +48,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
+#include <linux/iio/events.h>
#include <linux/iio/iio.h>
#include <linux/iio/sysfs.h>
#include <linux/interrupt.h>
@@ -283,6 +284,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x5B,
.mask = GENMASK(5, 0),
},
+ .wakeup_src_reg = 0x1b,
+ .wakeup_src_status_mask = BIT(3),
+ .wakeup_src_z_mask = BIT(0),
+ .wakeup_src_y_mask = BIT(1),
+ .wakeup_src_x_mask = BIT(2),
},
},
{
@@ -404,6 +410,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x5B,
.mask = GENMASK(5, 0),
},
+ .wakeup_src_reg = 0x1b,
+ .wakeup_src_status_mask = BIT(3),
+ .wakeup_src_z_mask = BIT(0),
+ .wakeup_src_y_mask = BIT(1),
+ .wakeup_src_x_mask = BIT(2),
},
},
{
@@ -538,6 +549,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x5B,
.mask = GENMASK(5, 0),
},
+ .wakeup_src_reg = 0x1b,
+ .wakeup_src_status_mask = BIT(3),
+ .wakeup_src_z_mask = BIT(0),
+ .wakeup_src_y_mask = BIT(1),
+ .wakeup_src_x_mask = BIT(2),
},
},
{
@@ -788,6 +804,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x5B,
.mask = GENMASK(5, 0),
},
+ .wakeup_src_reg = 0x1b,
+ .wakeup_src_status_mask = BIT(3),
+ .wakeup_src_z_mask = BIT(0),
+ .wakeup_src_y_mask = BIT(1),
+ .wakeup_src_x_mask = BIT(2),
},
},
{
@@ -934,6 +955,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
.addr = 0x5B,
.mask = GENMASK(5, 0),
},
+ .wakeup_src_reg = 0x1b,
+ .wakeup_src_status_mask = BIT(3),
+ .wakeup_src_z_mask = BIT(0),
+ .wakeup_src_y_mask = BIT(1),
+ .wakeup_src_x_mask = BIT(2),
}
},
};
@@ -1659,6 +1685,38 @@ static struct iio_dev *st_lsm6dsx_alloc_iiodev(struct st_lsm6dsx_hw *hw,
return iio_dev;
}
+void st_lsm6dsx_report_motion_event(struct st_lsm6dsx_hw *hw, int data)
+{
+ s64 timestamp = iio_get_time_ns(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
+
+ if (data & hw->settings->event_settings.wakeup_src_z_mask)
+ iio_push_event(hw->iio_devs[ST_LSM6DSX_ID_ACC],
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_Z,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+ timestamp);
+
+ if (data & hw->settings->event_settings.wakeup_src_x_mask)
+ iio_push_event(hw->iio_devs[ST_LSM6DSX_ID_ACC],
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_Y,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+ timestamp);
+
+ if (data & hw->settings->event_settings.wakeup_src_x_mask)
+ iio_push_event(hw->iio_devs[ST_LSM6DSX_ID_ACC],
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_X,
+ IIO_EV_TYPE_THRESH,
+ IIO_EV_DIR_EITHER),
+ timestamp);
+}
+
static irqreturn_t st_lsm6dsx_handler_irq(int irq, void *private)
{
return IRQ_WAKE_THREAD;
@@ -1668,6 +1726,18 @@ static irqreturn_t st_lsm6dsx_handler_thread(int irq, void *private)
{
struct st_lsm6dsx_hw *hw = private;
int count;
+ int data, err;
+
+ if (hw->enable_event) {
+ err = regmap_read(hw->regmap,
+ hw->settings->event_settings.wakeup_src_reg,
+ &data);
+ if (err < 0)
+ return IRQ_NONE;
+
+ if (data & hw->settings->event_settings.wakeup_src_status_mask)
+ st_lsm6dsx_report_motion_event(hw, data);
+ }
mutex_lock(&hw->fifo_lock);
count = hw->settings->fifo_ops.read_fifo(hw);
--
2.23.0
