heads/patches/linux-5.5-openpower/0008-amdgpu-Wrap-FPU-dependent-functions-in-dc20.patch

From 1b2c65e94e6bcd3b36f799c880162fb3b3394ed4 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <tpearson@raptorengineering.com>
Date: Sat, 7 Dec 2019 16:32:55 -0600
Subject: [PATCH 3/3] amdgpu: Wrap FPU dependent functions in dc20

dc20 containes several FPU-dependent functions without proper FPU
kernel mode enable/disable wrappers.  Add the required wrappers
for both x86 and POWER.

This enables Navi DC20 support for POWER systems.

Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>
---
 .../gpu/drm/amd/display/dc/dcn20/dcn20_resource.c  | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
index 254973751732..95303b77bfd6 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c
@@ -2917,14 +2917,19 @@ static bool dcn20_validate_bandwidth_internal(struct dc *dc, struct dc_state *co
 bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context,
 		bool fast_validate)
 {
+	DC_FP_START()
+
 	bool voltage_supported = false;
 	bool full_pstate_supported = false;
 	bool dummy_pstate_supported = false;
 	double p_state_latency_us = context->bw_ctx.dml.soc.dram_clock_change_latency_us;
 
-	if (fast_validate)
-		return dcn20_validate_bandwidth_internal(dc, context, true);
+	if (fast_validate) {
+		voltage_supported = dcn20_validate_bandwidth_internal(dc, context, true);
 
+		DC_FP_END()
+		return voltage_supported;
+	}
 
 	// Best case, we support full UCLK switch latency
 	voltage_supported = dcn20_validate_bandwidth_internal(dc, context, false);
@@ -2953,6 +2958,7 @@ bool dcn20_validate_bandwidth(struct dc *dc, struct dc_state *context,
 restore_dml_state:
 	context->bw_ctx.dml.soc.dram_clock_change_latency_us = p_state_latency_us;
 
+	DC_FP_END()
 	return voltage_supported;
 }
 
@@ -3472,6 +3478,8 @@ static bool construct(
 	enum dml_project dml_project_version =
 			get_dml_project_version(ctx->asic_id.hw_internal_rev);
 
+	DC_FP_START()
+
 	ctx->dc_bios->regs = &bios_regs;
 	pool->base.funcs = &dcn20_res_pool_funcs;
 
@@ -3760,10 +3768,12 @@ static bool construct(
 
 	dc->cap_funcs = cap_funcs;
 
+	DC_FP_END()
 	return true;
 
 create_fail:
 
+	DC_FP_END()
 	destruct(pool);
 
 	return false;
-- 
2.20.1