From: Oliver Logush <oliver.logush@amd.com>
Date: Fri, 1 Apr 2022 14:40:30 +0000 (-0400)
Subject: drm/amd/display: Insert smu busy status before sending another request
X-Git-Tag: howlett/maple/20220722_2~460^2~12^2~63
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=721af39f003668a86650a640b41439b7c145c52e;p=users%2Fjedix%2Flinux-maple.git

drm/amd/display: Insert smu busy status before sending another request

[why]
Need to check if result register is busy before sending another request

[how]
Call method to check if result register is busy

Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Oliver Logush <oliver.logush@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/dcn301_smu.c b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/dcn301_smu.c
index d9920d91838d..1cae01a91a69 100644
--- a/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/dcn301_smu.c
+++ b/drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/dcn301_smu.c
@@ -94,6 +94,8 @@ static int dcn301_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr,
 {
 	uint32_t result;
 
+	result = dcn301_smu_wait_for_response(clk_mgr, 10, 200000);
+
 	/* First clear response register */
 	REG_WRITE(MP1_SMN_C2PMSG_91, VBIOSSMC_Status_BUSY);