Karthik Poosa 25a2aa779f drm/xe/hwmon: Add support to manage power limits though mailbox
Add support to manage power limits using pcode mailbox commands
for supported platforms.

v2:
 - Address review comments. (Badal)
 - Use mailbox commands instead of registers to manage power limits
   for BMG.
 - Clamp the maximum power limit to GPU firmware default value.

v3:
 - Clamp power limit in write also for platforms with mailbox support.

v4:
 - Remove unnecessary debug prints. (Badal)

v5:
 - Update description of variable pl1_on_boot to fix kernel-doc error.

v6:
 - Improve commit message, refer to BIOS as GPU firmware.
 - Change macro READ_PL_FROM_BIOS to READ_PL_FROM_FW.
 - Rectify drm_warn to drm_info.

Signed-off-by: Karthik Poosa <karthik.poosa@intel.com>
Fixes: e90f7a58e6 ("drm/xe/hwmon: Add HWMON support for BMG")
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Link: https://lore.kernel.org/r/20250529163458.2354509-2-karthik.poosa@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 7596d839f6)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
2025-06-05 18:05:44 +02:00
2025-05-06 09:09:49 +02:00
2024-09-01 20:43:24 -07:00
2025-05-06 11:33:49 -04:00
2022-09-28 09:02:20 +02:00
2025-02-19 14:53:27 -07:00
2025-05-04 13:55:04 -07:00
2024-03-18 03:36:32 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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