From: Alvin Lee <alvin.lee2@xxxxxxx>
[Description]
We want PMFW to wait for DMCUB to ACK the MCLK end message
for FPO cases as well.
Reviewed-by: Samson Tam <samson.tam@xxxxxxx>
Acked-by: Stylon Wang <stylon.wang@xxxxxxx>
Signed-off-by: Alvin Lee <alvin.lee2@xxxxxxx>
---
.../gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c | 5 +++++
.../amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.c | 7 +++++++
.../amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.h | 1 +
3 files changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
index 2f65591d2f62..c224c6eb879d 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c
@@ -555,6 +555,11 @@ static void dcn32_update_clocks(struct clk_mgr *clk_mgr_base,
}
}
+ if (context->bw_ctx.bw.dcn.clk.fw_based_mclk_switching)
+ dcn32_smu_wait_for_dmub_ack_mclk(clk_mgr, true);
+ else
+ dcn32_smu_wait_for_dmub_ack_mclk(clk_mgr, false);
+
/* Always update saved value, even if new value not set due to P-State switching unsupported. Also check safe_to_lower for FCLK */
if (safe_to_lower && (clk_mgr_base->clks.fclk_p_state_change_support != clk_mgr_base->clks.fclk_prev_p_state_change_support)) {
update_fclk = true;
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.c
index fb524fe4ab26..700ce42036d7 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.c
@@ -139,3 +139,10 @@ unsigned int dcn32_smu_set_hard_min_by_freq(struct clk_mgr_internal *clk_mgr, ui
return response;
}
+
+void dcn32_smu_wait_for_dmub_ack_mclk(struct clk_mgr_internal *clk_mgr, bool enable)
+{
+ smu_print("PMFW to wait for DMCUB ack for MCLK : %d\n", enable);
+
+ dcn32_smu_send_msg_with_param(clk_mgr, 0x14, enable ? 1 : 0, NULL);
+}
diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.h b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.h
index a68038a41972..a34c258c19dc 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.h
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr_smu_msg.h
@@ -43,5 +43,6 @@ void dcn32_smu_set_pme_workaround(struct clk_mgr_internal *clk_mgr);
void dcn32_smu_send_cab_for_uclk_message(struct clk_mgr_internal *clk_mgr, unsigned int num_ways);
void dcn32_smu_transfer_wm_table_dram_2_smu(struct clk_mgr_internal *clk_mgr);
unsigned int dcn32_smu_set_hard_min_by_freq(struct clk_mgr_internal *clk_mgr, uint32_t clk, uint16_t freq_mhz);
+void dcn32_smu_wait_for_dmub_ack_mclk(struct clk_mgr_internal *clk_mgr, bool enable);
#endif /* __DCN32_CLK_MGR_SMU_MSG_H_ */
--
2.41.0
