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drm/amd/display: disable FPO and SubVP for older DMUB versions on DCN32x

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There have recently been changes that break backwards compatibility,
that were introduced into DMUB firmware (for DCN32x) concerning FPO and
SubVP. So, since those are just power optimization features, we can just
disable them unless the user is using a new enough version of DMUB
firmware.

Cc: stable@vger.kernel.org
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2870
Fixes: ed6e2782e9 ("drm/amd/display: For cursor P-State allow for SubVP")
Reported-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com>
Closes: https://lore.kernel.org/r/CABXGCsNRb0QbF2pKLJMDhVOKxyGD6-E+8p-4QO6FOWa6zp22_A@mail.gmail.com/
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Hamza Mahfooz
2023-12-15 10:37:39 -05:00
committed by Alex Deucher
parent 4e08378b2d
commit 65550a9cc5
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/amd/display/dc/hwss/dcn32/dcn32_hwseq.c
View File

@@ -960,6 +960,12 @@ void dcn32_init_hw(struct dc *dc)
dc->caps.dmub_caps.subvp_psr = dc->ctx->dmub_srv->dmub->feature_caps.subvp_psr_support;
dc->caps.dmub_caps.gecc_enable = dc->ctx->dmub_srv->dmub->feature_caps.gecc_enable;
dc->caps.dmub_caps.mclk_sw = dc->ctx->dmub_srv->dmub->feature_caps.fw_assisted_mclk_switch;
if (dc->ctx->dmub_srv->dmub->fw_version <
DMUB_FW_VERSION(7, 0, 35)) {
dc->debug.force_disable_subvp = true;
dc->debug.disable_fpo_optimizations = true;
}
}
}