From b0a2db9b482f16a91b2d67bac6b4977dc471fcab Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 19 Aug 2020 16:48:17 -0400 Subject: drm/amdgpu: add pre_asic_init callback for SOC15 We need to restore some registers prior to running asic init to work around a firmware bug. Acked-by: Nirmoy Das Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/soc15.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/soc15.c') diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c index 3c3a7adad024..2f93c475d6d8 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.c +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c @@ -1029,6 +1029,11 @@ static uint64_t soc15_get_pcie_replay_count(struct amdgpu_device *adev) return (nak_r + nak_g); } +static void soc15_pre_asic_init(struct amdgpu_device *adev) +{ + gmc_v9_0_restore_registers(adev); +} + static const struct amdgpu_asic_funcs soc15_asic_funcs = { .read_disabled_bios = &soc15_read_disabled_bios, @@ -1049,6 +1054,7 @@ static const struct amdgpu_asic_funcs soc15_asic_funcs = .need_reset_on_init = &soc15_need_reset_on_init, .get_pcie_replay_count = &soc15_get_pcie_replay_count, .supports_baco = &soc15_supports_baco, + .pre_asic_init = &soc15_pre_asic_init, }; static const struct amdgpu_asic_funcs vega20_asic_funcs = @@ -1072,6 +1078,7 @@ static const struct amdgpu_asic_funcs vega20_asic_funcs = .need_reset_on_init = &soc15_need_reset_on_init, .get_pcie_replay_count = &soc15_get_pcie_replay_count, .supports_baco = &soc15_supports_baco, + .pre_asic_init = &soc15_pre_asic_init, }; static int soc15_common_early_init(void *handle) -- cgit v1.2.3-70-g09d2