diff options
| author | Eric Yang <Eric.Yang2@amd.com> | 2020-05-30 00:13:57 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-04-18 23:28:53 +0300 |
| commit | 499e4b1c722e0e2ca40c56342b766e95f6c31f4a (patch) | |
| tree | 5d9ba4eb32abe9f4dd57c90abab87a9944e44d20 /drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | |
| parent | bddb55ccbdc20dd7fd526c8dfb13f695637bf7b1 (diff) | |
| download | linux-499e4b1c722e0e2ca40c56342b766e95f6c31f4a.tar.xz | |
drm/amd/display: add mechanism to skip DCN init
[Why]
If optimized init is done in FW. DCN init can 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>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 28 |
1 files changed, 7 insertions, 21 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c index eef43577508c..d15ec32243e2 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c @@ -179,31 +179,17 @@ bool dc_dmub_srv_cmd_run_list(struct dc_dmub_srv *dc_dmub_srv, unsigned int coun return true; } -void dc_dmub_srv_wait_phy_init(struct dc_dmub_srv *dc_dmub_srv) +bool dc_dmub_srv_optimized_init_done(struct dc_dmub_srv *dc_dmub_srv) { - struct dmub_srv *dmub = dc_dmub_srv->dmub; - struct dc_context *dc_ctx = dc_dmub_srv->ctx; - enum dmub_status status; - - for (;;) { - /* Wait up to a second for PHY init. */ - status = dmub_srv_wait_for_phy_init(dmub, 1000000); - if (status == DMUB_STATUS_OK) - /* Initialization OK */ - break; + struct dmub_srv *dmub; + union dmub_fw_boot_status status; - DC_ERROR("DMCUB PHY init failed: status=%d\n", status); - ASSERT(0); + if (!dc_dmub_srv || !dc_dmub_srv->dmub) + return false; - if (status != DMUB_STATUS_TIMEOUT) - /* - * Server likely initialized or we don't have - * DMCUB HW support - this won't end. - */ - break; + dmub = dc_dmub_srv->dmub; - /* Continue spinning so we don't hang the ASIC. */ - } + return status.bits.optimized_init_done; } bool dc_dmub_srv_notify_stream_mask(struct dc_dmub_srv *dc_dmub_srv, |