[PATCH v2 4/6] iio: accel: adxl372: add iio events

Alexandru Tachici
2020-02-25T12:09:35Z

Set INT1 interrupts to fire when activity/inactivity
is detected by the device. On irq, push event code by calling
iio_push_event().

Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
---
drivers/iio/accel/adxl372.c | 37 +++++++++++++++++++++++++++++++++++--
1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c
index 775dc4f0aaf4..e669eaaaa07e 100644
--- a/drivers/iio/accel/adxl372.c
+++ b/drivers/iio/accel/adxl372.c
@@ -114,6 +114,11 @@
#define ADXL372_STATUS_1_AWAKE(x) (((x) >> 6) & 0x1)
#define ADXL372_STATUS_1_ERR_USR_REGS(x) (((x) >> 7) & 0x1)

+/* ADXL372_STATUS_2 */
+#define ADXL372_STATUS_2_INACT(x) (((x) >> 4) & 0x1)
+#define ADXL372_STATUS_2_ACT(x) (((x) >> 5) & 0x1)
+#define ADXL372_STATUS_2_AC2(x) (((x) >> 6) & 0x1)
+
/* ADXL372_INT1_MAP */
#define ADXL372_INT1_MAP_DATA_RDY_MSK BIT(0)
#define ADXL372_INT1_MAP_DATA_RDY_MODE(x) (((x) & 0x1) << 0)
@@ -585,6 +590,27 @@ static int adxl372_get_status(struct adxl372_state *st,
return ret;
}

+static void adxl372_push_event(struct iio_dev *indio_dev, s64 timestamp,
+ u8 status2)
+{
+ unsigned int ev_dir;
+
+ if (ADXL372_STATUS_2_ACT(status2))
+ ev_dir = IIO_EV_DIR_RISING;
+
+ if (ADXL372_STATUS_2_INACT(status2))
+ ev_dir = IIO_EV_DIR_FALLING;
+
+ if (ev_dir != IIO_EV_DIR_NONE)
+ iio_push_event(indio_dev,
+ IIO_MOD_EVENT_CODE(IIO_ACCEL,
+ 0,
+ IIO_MOD_X_OR_Y_OR_Z,
+ IIO_EV_TYPE_THRESH,
+ ev_dir),
+ timestamp);
+}
+
static irqreturn_t adxl372_trigger_handler(int irq, void *p)
{
struct iio_poll_func *pf = p;
@@ -598,6 +624,8 @@ static irqreturn_t adxl372_trigger_handler(int irq, void *p)
if (ret < 0)
goto err;

+ adxl372_push_event(indio_dev, iio_get_time_ns(indio_dev), status2);
+
if (st->fifo_mode != ADXL372_FIFO_BYPASSED &&
ADXL372_STATUS_1_FIFO_FULL(status1)) {
/*
@@ -989,7 +1017,10 @@ static int adxl372_buffer_postenable(struct iio_dev *indio_dev)
if (ret < 0)
return ret;

- ret = adxl372_set_interrupts(st, ADXL372_INT1_MAP_FIFO_FULL_MSK, 0);
+ mask = ADXL372_INT1_MAP_FIFO_FULL_MSK |
+ ADXL372_INT1_MAP_ACT_MSK |
+ ADXL372_INT1_MAP_INACT_MSK;
+ ret = adxl372_set_interrupts(st, mask, 0);
if (ret < 0)
goto err;

@@ -1067,7 +1098,9 @@ static int adxl372_dready_trig_set_state(struct iio_trigger *trig,
unsigned long int mask = 0;

if (state)
- mask = ADXL372_INT1_MAP_FIFO_FULL_MSK;
+ mask = ADXL372_INT1_MAP_FIFO_FULL_MSK |
+ ADXL372_INT1_MAP_ACT_MSK |
+ ADXL372_INT1_MAP_INACT_MSK;

return adxl372_set_interrupts(st, mask, 0);
}
--
2.20.1