Commit a32e24b4 authored by Roman Li's avatar Roman Li Committed by Alex Deucher
Browse files

drm/amd/display: Initial prototype of FBC implementation 



- Protected by ENABLE_FBC compile flag
- DC part will follow

Signed-off-by: default avatarRoman Li <Roman.Li@amd.com>
Reviewed-by: default avatarTony Cheng <Tony.Cheng@amd.com>
Acked-by: default avatarHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent cdc95cbb

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+29 −0
Original line number Diff line number Diff line
@@ -297,6 +297,30 @@ static void hotplug_notify_work_func(struct work_struct *work) 
	drm_kms_helper_hotplug_event(dev);

}



#ifdef ENABLE_FBC

#include "dal_asic_id.h"

/* Allocate memory for FBC compressed data  */

/* TODO: Dynamic allocation */

#define AMDGPU_FBC_SIZE    (3840 * 2160 * 4)



void amdgpu_dm_initialize_fbc(struct amdgpu_device *adev)

{

	int r;

	struct dm_comressor_info *compressor = &adev->dm.compressor;



	if (!compressor->bo_ptr) {

		r = amdgpu_bo_create_kernel(adev, AMDGPU_FBC_SIZE, PAGE_SIZE,

				AMDGPU_GEM_DOMAIN_VRAM, &compressor->bo_ptr,

				&compressor->gpu_addr, &compressor->cpu_addr);



		if (r)

			DRM_ERROR("DM: Failed to initialize fbc\n");

	}



}

#endif





/* Init display KMS

 *

 * Returns 0 on success
@@ -347,6 +371,11 @@ int amdgpu_dm_init(struct amdgpu_device *adev) 


	init_data.dce_environment = DCE_ENV_PRODUCTION_DRV;



#ifdef ENABLE_FBC

	if (adev->family == FAMILY_CZ)

		amdgpu_dm_initialize_fbc(adev);

	init_data.fbc_gpu_addr = adev->dm.compressor.gpu_addr;

#endif

	/* Display Core create. */

	adev->dm.dc = dc_create(&init_data);

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h

+12 −0
Original line number Diff line number Diff line
@@ -72,6 +72,15 @@ struct irq_list_head { 
	struct work_struct work;

};



#ifdef ENABLE_FBC

struct dm_comressor_info {

	void *cpu_addr;

	struct amdgpu_bo *bo_ptr;

	uint64_t gpu_addr;

};

#endif





struct amdgpu_display_manager {

	struct dal *dal;

	struct dc *dc;
@@ -133,6 +142,9 @@ struct amdgpu_display_manager { 
	 * Caches device atomic state for suspend/resume

	 */

	struct drm_atomic_state *cached_state;

#ifdef ENABLE_FBC

	struct dm_comressor_info compressor;

#endif

};



/* basic init/fini API */