diff options
| author | Eric Yang <Eric.Yang2@amd.com> | 2020-05-29 17:13:57 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-07-01 01:59:25 -0400 |
| commit | 8f95ff284cd2b3be0ee49d2c7b29d408aad3843d (patch) | |
| tree | 015ec3b83262e2589af77f6c249b1febd919dbd4 /drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c | |
| parent | c04bd16e481663aade0150daf7a91cb87831bb83 (diff) | |
drm/amd/display: add mechanism to skip DCN init
[Why]
If optimized init is done in FW. DCN init be skipped in driver. This
need to be communicated between driver and fw and maintain backwards
compatibility.
[How]
Use DMUB scratch 0 bit 2 to indicate optimized init done in fw and
use DMUB scatch 4 bit 0 to indicate drive supports the optimized flow
so FW will perform it.
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c index 2c4a2fe9311d..0cd78e745e7e 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c @@ -312,3 +312,18 @@ uint32_t dmub_dcn20_get_gpint_response(struct dmub_srv *dmub) { return REG_READ(DMCUB_SCRATCH7); } + +union dmub_fw_boot_status dmub_dcn20_get_fw_boot_status(struct dmub_srv *dmub) +{ + union dmub_fw_boot_status status; + + status.all = REG_READ(DMCUB_SCRATCH0); + return status; +} + +void dmub_dcn20_enable_dmub_boot_options(struct dmub_srv *dmub) +{ + union dmub_fw_boot_options boot_options = {0}; + + REG_WRITE(DMCUB_SCRATCH14, boot_options.all); +} |