iio: accel: kxcjk1013: Support orientation matrix

The generic IIO mount-matrix property conveys physical orientation of the hardware chip.

Signed-off-by Dmitry Osipenko <[email protected]>

---
 .../devicetree/bindings/iio/accel/kionix,kxcjk1013.txt     | 7 +++++++
 1 file changed, 7 insertions(+)

Quoted 8 lines

The generic IIO mount-matrix property conveys physical orientation of the hardware chip.

Signed-off-by Dmitry Osipenko <[email protected]>

---
 .../devicetree/bindings/iio/accel/kionix,kxcjk1013.txt     | 7 +++++++
 1 file changed, 7 insertions(+)

Acked-by Rob Herring <[email protected]>

15.01.2020 18:39, Rob Herring пишет:

Quoted 10 lines · Dmitry Osipenko

Quoted 8 lines

The generic IIO mount-matrix property conveys physical orientation of the hardware chip.

Signed-off-by Dmitry Osipenko <[email protected]>

---
 .../devicetree/bindings/iio/accel/kionix,kxcjk1013.txt     | 7 +++++++
 1 file changed, 7 insertions(+)

Quoted 2 lines

Acked-by Rob Herring <[email protected]>

Thanks!

Hardware could be physically mounted in any possible direction and userpspace needs to be aware of the mounting orientation in order to process sensor's data correctly. In particular this helps iio-sensor- proxy
to report display's orientation properly on a phone/tablet devices.

Signed-off-by Dmitry Osipenko <[email protected]>

---
 drivers/iio/accel/kxcjk-1013.c       | 27 +++++++++++++++++++++++++-

(quoted diff) +0 -1

-
 include/linux/iio/accel/kxcjk_1013.h |  3 +++
 2 files changed, 28 insertions(+), 2 deletions(-)

drivers/iio/accel/kxcjk-1013.c +15 -0

index fee535d6e45b..c9924a65c32a 100644
@@ -130,6 +130,7 @@ struct kxcjk1013_data {
 	struct i2c_client *client;
 	struct iio_trigger *dready_trig;
 	struct iio_trigger *motion_trig;
+	struct iio_mount_matrix orientation;
 	struct mutex mutex;
 	s16 buffer[8];
 	u8 odr_bits;

@@ -983,6 +984,20 @@ static const struct iio_event_spec
 kxcjk1013_event = {
 				 BIT(IIO_EV_INFO_PERIOD)
 };
 
+static const struct iio_mount_matrix *
+kxcjk1013_get_mount_matrix(const struct iio_dev *indio_dev,
+			   const struct iio_chan_spec *chan)
+{
+	struct kxcjk1013_data *data = iio_priv(indio_dev);
+
+	return &data->orientation;
+}
+
+static const struct iio_chan_spec_ext_info kxcjk1013_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE,
 kxcjk1013_get_mount_matrix),
+	{ }
+};
+
 #define KXCJK1013_CHANNEL(_axis) {					

\
.type = IIO_ACCEL,
\
.modified = 1,
\

drivers/iio/accel/kxcjk-1013.c +1 -0

@@ -999,6 +1014,7 @@ static const struct iio_event_spec
 kxcjk1013_event = {
 		.endianness = IIO_LE,					
 \
 	},								
 \
 	.event_spec = &kxcjk1013_event,				\
+	.ext_info = kxcjk1013_ext_info,					

\
.num_event_specs = 1
\
}

drivers/iio/accel/kxcjk-1013.c +9 -2

@@ -1267,11 +1283,18 @@ static int kxcjk1013_probe(struct i2c_client
 *client,
 	data->client = client;
 
 	pdata = dev_get_platdata(&client->dev);
-	if (pdata)
+	if (pdata) {
 		data->active_high_intr = pdata->active_high_intr;
-	else
+		data->orientation = pdata->orientation;
+	} else {
 		data->active_high_intr = true; /* default polarity */
 
+		ret = iio_read_mount_matrix(&client->dev, "mount-
 matrix",
+					    &data->orientation);
+		if (ret)
+			return ret;
+	}
+
 	if (id) {

drivers/iio/accel/kxcjk-1013.c +0 -0

 		data->chipset = (enum kx_chipset)(id->driver_data);
 		name = id->name;

include/linux/iio/accel/kxcjk_1013.h +3 -0

index 8c3c78bc9f91..ea0ecb774371 100644
@@ -7,8 +7,11 @@
 #ifndef __IIO_KXCJK_1013_H__
 #define __IIO_KXCJK_1013_H__
 
+#include <linux/iio/iio.h>
+
 struct kxcjk_1013_platform_data {
 	bool active_high_intr;
+	struct iio_mount_matrix orientation;
 };
 
 #endif

Quoted 7 lines

Hardware could be physically mounted in any possible direction and userpspace needs to be aware of the mounting orientation in order to process sensor's data correctly. In particular this helps iio-sensor- proxy
to report display's orientation properly on a phone/tablet devices.

Signed-off-by Dmitry Osipenko <[email protected]>

Acked-by Srinivas Pandruvada <[email protected]>

15.01.2020 20:20, Srinivas Pandruvada пишет:

Quoted 7 lines · Dmitry Osipenko

Quoted 6 lines

Hardware could be physically mounted in any possible direction and userpspace needs to be aware of the mounting orientation in order to process sensor's data correctly. In particular this helps iio-sensor- proxy
to report display's orientation properly on a phone/tablet devices.

Quoted 3 lines

Quoted 1 line

Signed-off-by Dmitry Osipenko <[email protected]>

Acked-by Srinivas Pandruvada <[email protected]>

Thanks!