linux-kernel - [PATCH v2 3/5] iio: Add channel type for attention

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Message-Id: <20241028-hpd-v2-3-18f6e79154d7@chromium.org>
Date: Mon, 28 Oct 2024 10:12:23 +0000
From: Ricardo Ribalda <ribalda@...omium.org>
To: Jiri Kosina <jikos@...nel.org>, Benjamin Tissoires <bentiss@...nel.org>, 
 Jonathan Cameron <jic23@...nel.org>, 
 Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>, 
 Lars-Peter Clausen <lars@...afoo.de>
Cc: Harvey Yang <chenghaoyang@...gle.com>, linux-input@...r.kernel.org, 
 linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Ricardo Ribalda <ribalda@...omium.org>
Subject: [PATCH v2 3/5] iio: Add channel type for attention

Add a new channel type representing if the user's attention state to the
the system. This usually means if the user is looking at the screen or
not.

Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
---
 Documentation/ABI/testing/sysfs-bus-iio | 7 +++++++
 drivers/iio/industrialio-core.c         | 1 +
 include/uapi/linux/iio/types.h          | 1 +
 tools/iio/iio_event_monitor.c           | 2 ++
 4 files changed, 11 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 89943c2d54e8..d5a2f93bd051 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -2339,3 +2339,10 @@ KernelVersion:	6.10
 Contact:	linux-iio@...r.kernel.org
 Description:
 		The value of current sense resistor in Ohms.
+
+What:		/sys/.../iio:deviceX/in_attention_raw
+KernelVersion:	6.13
+Contact:	linux-iio@...r.kernel.org
+Description:
+		Boolean value representing the user's attention to the system.
+		This usually means if the user is looking at the screen or not.
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 6a6568d4a2cb..bdfb51275b68 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -95,6 +95,7 @@ static const char * const iio_chan_type_name_spec[] = {
 	[IIO_DELTA_VELOCITY] = "deltavelocity",
 	[IIO_COLORTEMP] = "colortemp",
 	[IIO_CHROMATICITY] = "chromaticity",
+	[IIO_ATTENTION] = "attention",
 };
 
 static const char * const iio_modifier_names[] = {
diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
index f2e0b2d50e6b..12886d4465e4 100644
--- a/include/uapi/linux/iio/types.h
+++ b/include/uapi/linux/iio/types.h
@@ -51,6 +51,7 @@ enum iio_chan_type {
 	IIO_DELTA_VELOCITY,
 	IIO_COLORTEMP,
 	IIO_CHROMATICITY,
+	IIO_ATTENTION,
 };
 
 enum iio_modifier {
diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c
index 8073c9e4fe46..ed9a677f1028 100644
--- a/tools/iio/iio_event_monitor.c
+++ b/tools/iio/iio_event_monitor.c
@@ -63,6 +63,7 @@ static const char * const iio_chan_type_name_spec[] = {
 	[IIO_DELTA_VELOCITY] = "deltavelocity",
 	[IIO_COLORTEMP] = "colortemp",
 	[IIO_CHROMATICITY] = "chromaticity",
+	[IIO_ATTENTION] = "attention",
 };
 
 static const char * const iio_ev_type_text[] = {
@@ -183,6 +184,7 @@ static bool event_is_known(struct iio_event_data *event)
 	case IIO_DELTA_VELOCITY:
 	case IIO_COLORTEMP:
 	case IIO_CHROMATICITY:
+	case IIO_ATTENTION:
 		break;
 	default:
 		return false;

-- 
2.47.0.163.g1226f6d8fa-goog