From: "Sami Kyöstilä" <skyostil@chromium.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: bleung@chromium.org, arnd@arndb.de, gregkh@linuxfoundation.org,
evanbenn@chromium.org, "Sami Kyöstilä" <skyostil@chromium.org>
Subject: [PATCH v3 0/1] Add a driver for the ChromeOS screen privacy sensor (HPS)
Date: Mon, 7 Feb 2022 12:36:12 +1100 [thread overview]
Message-ID: <20220207013613.1150783-1-skyostil@chromium.org> (raw)
This series adds a driver for the ChromeOS screen privacy sensor
(a.k.a. HPS) device, attached on the I2C bus. The sensor is a
hardware-isolated module which reports a high-level presence signal,
e.g., whether there is person in front of the computer or not.
The driver exposes the device to userspace as a character device, which
can be used to control the power state of the device. The driver
automatically turns power off to the sensor unless a process is using
it.
More information about HPS, its firmware and communication protocol can
be found at
https://chromium.googlesource.com/chromiumos/platform/hps-firmware.
Changes in v3:
- Moved from drivers/misc to drivers/platform/chrome.
Changes in v2:
- Removed custom ioctl interface.
- Reworked to use miscdev.
Sami Kyöstilä (1):
platform/chrome: add a driver for HPS
MAINTAINERS | 6 +
drivers/platform/chrome/Kconfig | 10 ++
drivers/platform/chrome/Makefile | 1 +
drivers/platform/chrome/cros_hps_i2c.c | 184 +++++++++++++++++++++++++
4 files changed, 201 insertions(+)
create mode 100644 drivers/platform/chrome/cros_hps_i2c.c
--
2.35.0.263.gb82422642f-goog
next reply other threads:[~2022-02-07 1:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-07 1:36 Sami Kyöstilä [this message]
2022-02-07 1:36 ` [PATCH v3 1/1] platform/chrome: add a driver for HPS Sami Kyöstilä
2022-02-10 5:41 ` Tzung-Bi Shih
2022-02-11 9:08 ` Sami Kyostila
2022-02-14 1:48 ` Tzung-Bi Shih
2022-02-14 8:46 ` Sami Kyostila
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