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drm/amd/display: Fix resetting DCN3.1 HW when resuming from S4

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[Why] On S4 resume we also need to fix detection of when to reload DMCUB
firmware because we're currently using the VBIOS version which isn't
compatible with the driver version.

[How] Update the hardware init check for DCN31 since it's the ASIC that
has this issue.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Jude Shih <jude.shih@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jude Shih 2021-07-06 18:04:11 +08:00 committed by Alex Deucher
parent cd7b0531a6
commit d5c5ac3a7b
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/amd/display/dmub/src/dmub_dcn31.c
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@ -267,11 +267,13 @@ void dmub_dcn31_set_outbox1_rptr(struct dmub_srv *dmub, uint32_t rptr_offset)
bool dmub_dcn31_is_hw_init(struct dmub_srv *dmub)
{
uint32_t is_hw_init;
union dmub_fw_boot_status status;
uint32_t is_enable;
REG_GET(DMCUB_CNTL, DMCUB_ENABLE, &is_hw_init);
status.all = REG_READ(DMCUB_SCRATCH0);
REG_GET(DMCUB_CNTL, DMCUB_ENABLE, &is_enable);
return is_hw_init != 0;
return is_enable != 0 && status.bits.dal_fw;
}
bool dmub_dcn31_is_supported(struct dmub_srv *dmub)