From: Gwendal Grignou <gwen...@chromium.org>
This new sysfs entry is used to interpret ring buffer information,
mainly by Android sensor HAL.
It expand to all sensors, the documentation about 'id' we can found
in Documentation/ABI/testing/sysfs-bus-iio-cros-ec.
Also fix typo in docs, I replace 'Septembre' by 'September'.
Signed-off-by: Gwendal Grignou <gwen...@chromium.org>
Signed-off-by: Fabien Lahoudere <fabien.lahoud...@collabora.com>
---
Documentation/ABI/testing/sysfs-bus-iio-cros-ec | 10 +++++-----
.../common/cros_ec_sensors/cros_ec_sensors_core.c | 14 ++++++++++++++
2 files changed, 19 insertions(+), 5 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
b/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
index 0e95c2ca105c..6158f831c761 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
+++ b/Documentation/ABI/testing/sysfs-bus-iio-cros-ec
@@ -18,11 +18,11 @@ Description:
values are 'base' and 'lid'.
What: /sys/bus/iio/devices/iio:deviceX/id
-Date: Septembre 2017
+Date: September 2017
KernelVersion: 4.14
Contact: linux-...@vger.kernel.org
Description:
- This attribute is exposed by the CrOS EC legacy accelerometer
- driver and represents the sensor ID as exposed by the EC. This
- ID is used by the Android sensor service hardware abstraction
- layer (sensor HAL) through the Android container on ChromeOS.
+ This attribute is exposed by the CrOS EC sensors driver and
+ represents the sensor ID as exposed by the EC. This ID is used
+ by the Android sensor service hardware abstraction layer (sensor
+ HAL) through the Android container on ChromeOS.
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
index 719a0df5aeeb..130362ca421b 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
@@ -125,6 +125,15 @@ static ssize_t cros_ec_sensors_calibrate(struct iio_dev
*indio_dev,
return ret ? ret : len;
}
+static ssize_t cros_ec_sensors_id(struct iio_dev *indio_dev,
+ uintptr_t private,
+ const struct iio_chan_spec *chan, char *buf)
+{
+ struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", st->param.info.sensor_num);
+}
+
static ssize_t cros_ec_sensors_loc(struct iio_dev *indio_dev,
uintptr_t private, const struct iio_chan_spec *chan,
char *buf)
@@ -140,6 +149,11 @@ const struct iio_chan_spec_ext_info
cros_ec_sensors_ext_info[] = {
.shared = IIO_SHARED_BY_ALL,
.write = cros_ec_sensors_calibrate
},
+ {
+ .name = "id",
+ .shared = IIO_SHARED_BY_ALL,
+ .read = cros_ec_sensors_id
+ },
{
.name = "location",
.shared = IIO_SHARED_BY_ALL,
--
2.19.2
