linux-kernel - [PATCH 0/3] Adjust behavior for HPD sensor

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Message-ID: <20250228163153.2554935-1-superm1@kernel.org>
Date: Fri, 28 Feb 2025 10:31:50 -0600
From: Mario Limonciello <superm1@...nel.org>
To: Basavaraj Natikar <basavaraj.natikar@....com>,
	Jiri Kosina <jikos@...nel.org>,
	Benjamin Tissoires <bentiss@...nel.org>
Cc: linux-kernel@...r.kernel.org (open list),
	linux-input@...r.kernel.org (open list:AMD SENSOR FUSION HUB DRIVER),
	Mario Limonciello <mario.limonciello@....com>,
	Pratap Nirujogi <pratap.nirujogi@....com>,
	Anson Tsao <anson.tsao@....com>
Subject: [PATCH 0/3] Adjust behavior for HPD sensor

From: Mario Limonciello <mario.limonciello@....com>

Some platforms include a human presence detection (HPD) sensor. When
enabled and a user is detected a wake event will be emitted from the
sensor fusion hub that software can react to.

Example use cases are "wake from suspend on approach" or to "lock
when leaving".

This is currently enabled by default on supported systems, but users
can't control it. This essentially means that wake on approach is
enabled which is a really surprising behavior to users that don't
expect it.

Instead of defaulting to enabled add a sysfs knob that users can
use to enable the feature if desirable and set it to disabled by
default.

Cc: Pratap Nirujogi <pratap.nirujogi@....com>
Cc: Anson Tsao  <anson.tsao@....com>

Mario Limonciello (3):
  HID: amd_sfh: Allow configuring whether HPD is enabled or disabled
  HID: amd_sfh: Default to HPD disabled
  HID: amd_sfh: Don't show wrong status for amd_sfh_hpd_info()

 .../ABI/testing/sysfs-driver-amd-sfh          | 13 +++++
 drivers/hid/amd-sfh-hid/amd_sfh_common.h      |  1 +
 drivers/hid/amd-sfh-hid/amd_sfh_pcie.c        | 58 +++++++++++++++++++
 drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c | 50 +++++++++++++++-
 drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.h |  3 +
 .../amd-sfh-hid/sfh1_1/amd_sfh_interface.c    |  2 +-
 6 files changed, 124 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-driver-amd-sfh

-- 
2.43.0