drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h

Source file repositories/reference/linux-study-clean/drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/mediatek/vcodec/decoder/vdec_ipi_msg.h
Extension
.h
Size
3956 bytes
Lines
154
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 vdec_ap_ipi_cmd {
	uint32_t msg_id;
	union {
		uint32_t vpu_inst_addr;
		uint32_t inst_id;
	};
	u32 codec_type;
	u32 reserved;
};

/**
 * struct vdec_vpu_ipi_ack - generic VPU to AP ipi command format
 * @msg_id	: vdec_ipi_msgid
 * @status	: VPU exeuction result
 * @ap_inst_addr	: AP video decoder instance address
 */
struct vdec_vpu_ipi_ack {
	uint32_t msg_id;
	int32_t status;
	uint64_t ap_inst_addr;
};

/**
 * struct vdec_ap_ipi_init - for AP_IPIMSG_DEC_INIT
 * @msg_id	: AP_IPIMSG_DEC_INIT
 * @codec_type	: codec fourcc
 * @ap_inst_addr	: AP video decoder instance address
 */
struct vdec_ap_ipi_init {
	uint32_t msg_id;
	u32 codec_type;
	uint64_t ap_inst_addr;
};

/**
 * struct vdec_ap_ipi_dec_start - for AP_IPIMSG_DEC_START
 * @msg_id	: AP_IPIMSG_DEC_START
 * @vpu_inst_addr : VPU decoder instance address. Used if ABI version < 2.
 * @inst_id     : instance ID. Used if the ABI version >= 2.
 * @data	: Header info
 *	H264 decoder [0]:buf_sz [1]:nal_start
 *	VP8 decoder  [0]:width/height
 *	VP9 decoder  [0]:profile, [1][2] width/height
 * @codec_type	: codec fourcc
 */
struct vdec_ap_ipi_dec_start {
	uint32_t msg_id;
	union {
		uint32_t vpu_inst_addr;
		uint32_t inst_id;
	};
	uint32_t data[3];
	u32 codec_type;
};

/**
 * struct vdec_vpu_ipi_init_ack - for VPU_IPIMSG_DEC_INIT_ACK
 * @msg_id	: VPU_IPIMSG_DEC_INIT_ACK
 * @status	: VPU exeuction result
 * @ap_inst_addr	: AP vcodec_vpu_inst instance address
 * @vpu_inst_addr	: VPU decoder instance address
 * @vdec_abi_version:	ABI version of the firmware. Kernel can use it to
 *			ensure that it is compatible with the firmware.
 *			This field is not valid for MT8173 and must not be
 *			accessed for this chip.
 * @inst_id     : instance ID. Valid only if the ABI version >= 2.
 */
struct vdec_vpu_ipi_init_ack {
	uint32_t msg_id;
	int32_t status;
	uint64_t ap_inst_addr;
	uint32_t vpu_inst_addr;
	uint32_t vdec_abi_version;
	uint32_t inst_id;
};

/**
 * struct vdec_ap_ipi_get_param - for AP_IPIMSG_DEC_GET_PARAM
 * @msg_id	: AP_IPIMSG_DEC_GET_PARAM
 * @inst_id     : instance ID. Used if the ABI version >= 2.
 * @data	: picture information
 * @param_type	: get param type
 * @codec_type	: Codec fourcc
 */
struct vdec_ap_ipi_get_param {
	u32 msg_id;
	u32 inst_id;
	u32 data[4];
	u32 param_type;
	u32 codec_type;

Annotation

Implementation Notes