drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/amdgpu/jpeg_v2_5.c
Extension
.c
Size
24222 bytes
Lines
872
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (enable) {
			if (!jpeg_v2_5_is_idle(ip_block))
				return -EBUSY;
			jpeg_v2_5_enable_clock_gating(adev, i);
		} else {
			jpeg_v2_5_disable_clock_gating(adev, i);
		}
	}

	return 0;
}

static int jpeg_v2_5_set_powergating_state(struct amdgpu_ip_block *ip_block,
					  enum amd_powergating_state state)
{
	struct amdgpu_device *adev = ip_block->adev;
	int ret;

	if (state == adev->jpeg.cur_state)
		return 0;

	if (state == AMD_PG_STATE_GATE)
		ret = jpeg_v2_5_stop(adev);
	else
		ret = jpeg_v2_5_start(adev);

	if (!ret)
		adev->jpeg.cur_state = state;

	return ret;
}

static int jpeg_v2_5_set_interrupt_state(struct amdgpu_device *adev,
					struct amdgpu_irq_src *source,
					unsigned type,
					enum amdgpu_interrupt_state state)
{
	return 0;
}

static int jpeg_v2_6_set_ras_interrupt_state(struct amdgpu_device *adev,
					struct amdgpu_irq_src *source,
					unsigned int type,
					enum amdgpu_interrupt_state state)
{
	return 0;
}

static int jpeg_v2_5_process_interrupt(struct amdgpu_device *adev,
				      struct amdgpu_irq_src *source,
				      struct amdgpu_iv_entry *entry)
{
	uint32_t ip_instance;

	switch (entry->client_id) {
	case SOC15_IH_CLIENTID_VCN:
		ip_instance = 0;
		break;
	case SOC15_IH_CLIENTID_VCN1:
		ip_instance = 1;
		break;
	default:
		DRM_ERROR("Unhandled client id: %d\n", entry->client_id);
		return 0;
	}

	DRM_DEBUG("IH: JPEG TRAP\n");

	switch (entry->src_id) {
	case VCN_2_0__SRCID__JPEG_DECODE:
		amdgpu_fence_process(adev->jpeg.inst[ip_instance].ring_dec);
		break;
	default:
		DRM_ERROR("Unhandled interrupt: %d %d\n",
			  entry->src_id, entry->src_data[0]);
		break;
	}

	return 0;
}

static int jpeg_v2_5_ring_reset(struct amdgpu_ring *ring,
				unsigned int vmid,
				struct amdgpu_fence *timedout_fence)
{
	amdgpu_ring_reset_helper_begin(ring, timedout_fence);
	jpeg_v2_5_stop_inst(ring->adev, ring->me);
	jpeg_v2_5_start_inst(ring->adev, ring->me);
	return amdgpu_ring_reset_helper_end(ring, timedout_fence);
}

Annotation

Implementation Notes