Documentation/hwmon/cros_ec_hwmon.rst

Source file repositories/reference/linux-study-clean/Documentation/hwmon/cros_ec_hwmon.rst

File Facts

System: Linux kernel
Corpus path: Documentation/hwmon/cros_ec_hwmon.rst
Extension: .rst
Size: 1096 bytes
Lines: 49
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: documentation
Status: atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

.. SPDX-License-Identifier: GPL-2.0-or-later

Kernel driver cros_ec_hwmon
===========================

Supported chips:

  * ChromeOS embedded controllers.

    Prefix: 'cros_ec'

    Addresses scanned: -

Author:

  - Thomas Weißschuh <linux@weissschuh.net>

Description
-----------

This driver implements support for hardware monitoring commands exposed by the
ChromeOS embedded controller used in Chromebooks and other devices.

The channel labels exposed via hwmon are retrieved from the EC itself.

Supported features
------------------

Fan readings
    Always supported.

Fan target speed
    If supported by the EC.

Temperature readings
    Always supported.

Temperature thresholds
    If supported by the EC.

PWM fan control
    If the EC also supports setting fan PWM values and fan mode.

    Note that EC will switch fan control mode back to auto when suspended.
    This driver will restore the fan state to what they were before suspended when resumed.

    If a fan is controllable, this driver will register that fan as a cooling device
    in the thermal framework as well.

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.