drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c

Source file repositories/reference/linux-study-clean/drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/qcom/iris/iris_hfi_gen2_response.c
Extension
.c
Size
28870 bytes
Lines
1029
Domain
Driver Families
Bucket
drivers/media
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

struct iris_hfi_gen2_core_hfi_range {
	u32 begin;
	u32 end;
	int (*handle)(struct iris_core *core, struct iris_hfi_packet *pkt);
};

struct iris_hfi_gen2_inst_hfi_range {
	u32 begin;
	u32 end;
	int (*handle)(struct iris_inst *inst, struct iris_hfi_packet *pkt);
};

struct iris_hfi_gen2_packet_handle {
	enum hfi_buffer_type type;
	int (*handle)(struct iris_inst *inst, struct iris_hfi_packet *pkt);
};

static u32 iris_hfi_gen2_buf_type_to_driver(struct iris_inst *inst,
					    enum hfi_buffer_type buf_type)
{
	switch (buf_type) {
	case HFI_BUFFER_BITSTREAM:
		return BUF_INPUT;
	case HFI_BUFFER_RAW:
		return BUF_OUTPUT;
	case HFI_BUFFER_BIN:
		return BUF_BIN;
	case HFI_BUFFER_ARP:
		return BUF_ARP;
	case HFI_BUFFER_COMV:
		return BUF_COMV;
	case HFI_BUFFER_NON_COMV:
		return BUF_NON_COMV;
	case HFI_BUFFER_LINE:
		return BUF_LINE;
	case HFI_BUFFER_DPB:
		if (inst->domain == DECODER)
			return BUF_DPB;
		else
			return BUF_SCRATCH_2;
	case HFI_BUFFER_PERSIST:
		return BUF_PERSIST;
	case HFI_BUFFER_PARTIAL_DATA:
		return BUF_PARTIAL;
	case HFI_BUFFER_VPSS:
		return BUF_VPSS;
	default:
		return 0;
	}
}

static bool iris_hfi_gen2_is_valid_hfi_buffer_type(u32 buffer_type)
{
	switch (buffer_type) {
	case HFI_BUFFER_BITSTREAM:
	case HFI_BUFFER_RAW:
	case HFI_BUFFER_BIN:
	case HFI_BUFFER_ARP:
	case HFI_BUFFER_COMV:
	case HFI_BUFFER_NON_COMV:
	case HFI_BUFFER_LINE:
	case HFI_BUFFER_DPB:
	case HFI_BUFFER_PERSIST:
	case HFI_BUFFER_VPSS:
	case HFI_BUFFER_PARTIAL_DATA:
		return true;
	default:
		return false;
	}
}

static bool iris_hfi_gen2_is_valid_hfi_port(u32 port, u32 buffer_type)
{
	if (port == HFI_PORT_NONE && buffer_type != HFI_BUFFER_PERSIST)
		return false;

	if (port != HFI_PORT_BITSTREAM && port != HFI_PORT_RAW)
		return false;

	return true;
}

static int iris_hfi_gen2_get_driver_buffer_flags(struct iris_inst *inst, u32 hfi_flags)
{
	struct iris_inst_hfi_gen2 *inst_hfi_gen2 = to_iris_inst_hfi_gen2(inst);
	u32 keyframe = HFI_GEN2_PICTURE_IDR | HFI_GEN2_PICTURE_I |
		HFI_GEN2_PICTURE_CRA | HFI_GEN2_PICTURE_BLA;
	u32 driver_flags = 0;

	if (inst_hfi_gen2->hfi_frame_info.picture_type & HFI_GEN2_PICTURE_NOSHOW)

Annotation

Implementation Notes