[WHY && HOW]
Some DP EDID CTS tests fail due to HPO disable, and we should keep it
enable on DCN4 dGPU.
Reviewed-by: Wenjing Liu <wenjing.liu@xxxxxxx>
Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Alex Hung <alex.hung@xxxxxxx>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
index 42753f56d31d..79a911e1a09a 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_hwseq.c
@@ -408,6 +408,8 @@ void dcn401_init_hw(struct dc *dc)
REG_UPDATE(DCFCLK_CNTL, DCFCLK_GATE_DIS, 0);
}
+ dcn401_setup_hpo_hw_control(hws, true);
+
if (!dcb->funcs->is_accelerated_mode(dcb) && dc->res_pool->hubbub->funcs->init_watermarks)
dc->res_pool->hubbub->funcs->init_watermarks(dc->res_pool->hubbub);
diff --git a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c
index 1cf0608e1980..8159fd838dc3 100644
--- a/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c
+++ b/drivers/gpu/drm/amd/display/dc/hwss/dcn401/dcn401_init.c
@@ -137,7 +137,6 @@ static const struct hwseq_private_funcs dcn401_private_funcs = {
.program_mall_pipe_config = dcn32_program_mall_pipe_config,
.update_force_pstate = dcn32_update_force_pstate,
.update_mall_sel = dcn32_update_mall_sel,
- .setup_hpo_hw_control = dcn401_setup_hpo_hw_control,
.calculate_dccg_k1_k2_values = NULL,
.apply_single_controller_ctx_to_hw = dce110_apply_single_controller_ctx_to_hw,
.reset_back_end_for_pipe = dcn20_reset_back_end_for_pipe,
