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Revision 2ee27796f298b710992a677a7e4d35c8c588b17e authored by Hans de Goede on 30 December 2018, 17:27:15 UTC, committed by Ingo Molnar on 19 April 2019, 17:23:13 UTC 
x86/cpu/intel: Lower the "ENERGY_PERF_BIAS: Set to normal" message's log priority
 
The "ENERGY_PERF_BIAS: Set to 'normal', was 'performance'" message triggers
on pretty much every Intel machine. The purpose of log messages with
a warning level is to notify the user of something which potentially is
a problem, or at least somewhat unexpected.

This message clearly does not match those criteria, so lower its log
priority from warning to info.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20181230172715.17469-1-hdegoede@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
1 parent 1de7edb
Raw File
amdgpu-dc.rst 
===================================
drm/amd/display - Display Core (DC)
===================================

*placeholder - general description of supported platforms, what dc is, etc.*

Because it is partially shared with other operating systems, the Display Core
Driver is divided in two pieces.

1. **Display Core (DC)** contains the OS-agnostic components. Things like
   hardware programming and resource management are handled here.
2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the
   amdgpu base driver and DRM are implemented here.

It doesn't help that the entire package is frequently referred to as DC. But
with the context in mind, it should be clear.

When CONFIG_DRM_AMD_DC is enabled, DC will be initialized by default for
supported ASICs. To force disable, set `amdgpu.dc=0` on kernel command line.
Likewise, to force enable on unsupported ASICs, set `amdgpu.dc=1`.

To determine if DC is loaded, search dmesg for the following entry:

``Display Core initialized with <version number here>``

AMDgpu Display Manager
======================

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
   :doc: overview

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
   :internal:

Lifecycle
---------

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
   :doc: DM Lifecycle

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
   :functions: dm_hw_init dm_hw_fini

Interrupts
----------

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
   :doc: overview

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
   :internal:

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
   :functions: register_hpd_handlers dm_crtc_high_irq dm_pflip_high_irq

Atomic Implementation
---------------------

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
   :doc: atomic

.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
   :functions: amdgpu_dm_atomic_check amdgpu_dm_atomic_commit_tail

Display Core
============

**WIP**
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