From f98544ea9af75cdf57211c6a55b63dcf1ffeb999 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 4 Oct 2019 12:33:09 -0500 Subject: [PATCH 4548/4736] drm/amdgpu: add helpers for baco entry and exit BACO - Bus Active, Chip Off Will be used for runtime pm. Entry will enter the BACO state (chip off). Exit will exit the BACO state (chip on). Change-Id: I051a4b9996af9ee7c7639be65fbd5009a4379ab3 Reviewed-by: Evan Quan Signed-off-by: Alex Deucher Signed-off-by: Rahul Kumar --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 3 +- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 62 ++++++++++++++++++++++ 2 files changed, 64 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index e0423a9efe14..9679649082cb 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1192,7 +1192,8 @@ bool amdgpu_device_supports_boco(struct drm_device *dev); bool amdgpu_device_supports_baco(struct drm_device *dev); bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev, struct amdgpu_device *peer_adev); - +int amdgpu_device_baco_enter(struct drm_device *dev); +int amdgpu_device_baco_exit(struct drm_device *dev); /* atpx handler */ #if defined(CONFIG_VGA_SWITCHEROO) void amdgpu_register_atpx_handler(void); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index ac0dd28ca0a1..ebdf775ab9b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -4333,3 +4333,65 @@ bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev, !(adev->gmc.aper_base & address_mask || aper_limit & address_mask); } + +int amdgpu_device_baco_enter(struct drm_device *dev) +{ + struct amdgpu_device *adev = dev->dev_private; + + if (!amdgpu_device_supports_baco(adev->ddev)) + return -ENOTSUPP; + + if (is_support_sw_smu(adev)) { + struct smu_context *smu = &adev->smu; + int ret; + + ret = smu_baco_enter(smu); + if (ret) + return ret; + + return 0; + } else { + void *pp_handle = adev->powerplay.pp_handle; + const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs; + + if (!pp_funcs ||!pp_funcs->get_asic_baco_state ||!pp_funcs->set_asic_baco_state) + return -ENOENT; + + /* enter BACO state */ + if (pp_funcs->set_asic_baco_state(pp_handle, 1)) + return -EIO; + + return 0; + } +} + +int amdgpu_device_baco_exit(struct drm_device *dev) +{ + struct amdgpu_device *adev = dev->dev_private; + + if (!amdgpu_device_supports_baco(adev->ddev)) + return -ENOTSUPP; + + if (is_support_sw_smu(adev)) { + struct smu_context *smu = &adev->smu; + int ret; + + ret = smu_baco_exit(smu); + if (ret) + return ret; + + return 0; + } else { + void *pp_handle = adev->powerplay.pp_handle; + const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs; + + if (!pp_funcs ||!pp_funcs->get_asic_baco_state ||!pp_funcs->set_asic_baco_state) + return -ENOENT; + + /* exit BACO state */ + if (pp_funcs->set_asic_baco_state(pp_handle, 0)) + return -EIO; + + return 0; + } +} -- 2.17.1