drm/amd/pm: reverse mclk and fclk clocks levels for SMU v13.0.4
authorTim Huang <Tim.Huang@amd.com>
Sun, 21 May 2023 01:24:00 +0000 (09:24 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 9 Jun 2023 08:34:21 +0000 (10:34 +0200)
commit00abb872ef0f82dde131b9bd12096100bb24d9ba
tree7cfc02d1da8f942ee77be14272d697cd712519d8
parent2f91f92bd870684173e1fa27927ae8ba99fe463c
drm/amd/pm: reverse mclk and fclk clocks levels for SMU v13.0.4

commit 6a07826f2057b5fa1c479ba56460195882464270 upstream.

This patch reverses the DPM clocks levels output of pp_dpm_mclk
and pp_dpm_fclk.

On dGPUs and older APUs we expose the levels from lowest clocks
to highest clocks. But for some APUs, the clocks levels that from
the DFPstateTable are given the reversed orders by PMFW. Like the
memory DPM clocks that are exposed by pp_dpm_mclk.

It's not intuitive that they are reversed on these APUs. All tools
and software that talks to the driver then has to know different ways
to interpret the data depending on the asic.

So we need to reverse them to expose the clocks levels from the
driver consistently.

Signed-off-by: Tim Huang <Tim.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_4_ppt.c