[PATCH AUTOSEL 6.2 15/60] drm/amd: Avoid ASSERT for some message failures

Sasha Levin
2023-02-27T02:02:40Z

From: Mario Limonciello <mario.limonciello@amd.com>

[ Upstream commit 3e5019ee67760cd61b2a5fd605e1289c2f92d983 ]

On DCN314 when resuming from s0i3 an ASSERT is shown indicating that
`VBIOSSMC_MSG_SetHardMinDcfclkByFreq` returned `VBIOSSMC_Result_Failed`.

This isn't a driver bug; it's a BIOS/configuration bug. To make this
easier to triage, add an explicit warning when this issue happens.

This matches the behavior utilized for failures with
`VBIOSSMC_MSG_TransferTableDram2Smu` configuration.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_smu.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_smu.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_smu.c
index f47cfe6b42bd2..0765334f08259 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn314/dcn314_smu.c
@@ -146,6 +146,9 @@ static int dcn314_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr,
if (msg_id == VBIOSSMC_MSG_TransferTableDram2Smu &&
param == TABLE_WATERMARKS)
DC_LOG_WARNING("Watermarks table not configured properly by SMU");
+ else if (msg_id == VBIOSSMC_MSG_SetHardMinDcfclkByFreq ||
+ msg_id == VBIOSSMC_MSG_SetMinDeepSleepDcfclk)
+ DC_LOG_WARNING("DCFCLK_DPM is not enabled by BIOS");
else
ASSERT(0);
REG_WRITE(MP1_SMN_C2PMSG_91, VBIOSSMC_Result_OK);
--
2.39.0