This directory contains a copy of the installed kernel headers
required by the iHD driver to communicate with the kernel.
Whenever driver needs new definitions for new kernel
APIs, these files should be updated.

These files in master should only be updated once the changes have landed
in the drm-next tree (see https://cgit.freedesktop.org/drm/drm/).

You can copy files installed after running this from the kernel
repository, at version the driver require:

$ make headers_install INSTALL_HDR_PATH=/path/to/install

The last update was done at the following kernel commit:

commit 1cc064dce4ed0ff111b6d6cb06b3cccf1cba29f5
Author: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Date:   Thu Mar 23 15:58:59 2023 -0700

    drm/i915/perf: Add support for OA media units

    MTL introduces additional OA units dedicated to media use cases. Add
    support for programming these OA units by passing the media engine class
    and instance parameters.

    UMD specific changes for GPUvis support:
    https://patchwork.freedesktop.org/patch/522827/?series=114023
    https://patchwork.freedesktop.org/patch/522822/?series=114023
    https://patchwork.freedesktop.org/patch/522826/?series=114023
    https://patchwork.freedesktop.org/patch/522828/?series=114023
    https://patchwork.freedesktop.org/patch/522816/?series=114023
    https://patchwork.freedesktop.org/patch/522825/?series=114023

    v2: (Ashutosh)
    - check for IP_VER(12, 70) instead of MTL
    - remove PERF_GROUP_OAG comment in mtl_oa_base
    - remove oa_buffer.group
    - use engine->oa_group->type in engine_supports_oa_format
    - remove fw_domains and use FORCEWAKE_ALL
    - remove MPES/MPEC comment
    - s/xehp/mtl/ in b counter validation function name
    - remove engine_supports_oa in __oa_engine_group
    - remove warn_ON from __oam_engine_group
    - refactor oa_init_groups and oa_init_regs
    - assign g->type correctly
    - use enum oa_type definition

    v3: (Ashutosh)
    - Drop oa_unit_functional as engine_supports_oa is enough

    v4:
    - s/DRM_DEBUG/drm_dbg/

    Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
    Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/20230323225901.3743681-10-umesh.nerlige.ramappa@intel.com

