drivers/media/platform/renesas/rcar_fdp1.c

File Facts

System

Linux kernel

Corpus path

drivers/media/platform/renesas/rcar_fdp1.c

Extension

.c

Size

66935 bytes

Lines

2452

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.

• 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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/clk.h
• linux/delay.h
• linux/dma-mapping.h
• linux/fs.h
• linux/interrupt.h
• linux/module.h
• linux/of.h
• linux/platform_device.h
• linux/pm_runtime.h
• linux/sched.h
• linux/slab.h
• linux/timer.h
• media/rcar-fcp.h
• media/v4l2-ctrls.h
• media/v4l2-device.h
• media/v4l2-event.h
• media/v4l2-ioctl.h
• media/v4l2-mem2mem.h
• media/videobuf2-dma-contig.h

Detected Declarations

• struct fdp1_fmt
• struct fdp1_q_data
• struct fdp1_field_buffer
• struct fdp1_buffer
• struct fdp1_job
• struct fdp1_dev
• struct fdp1_ctx
• enum fdp1_deint_mode
• function fdp1_fmt_is_rgb
• function list_add_job
• function fdp1_job_free
• function queue_job
• function queue_hw_job
• function fdp1_field_complete
• function fdp1_queue_field
• function fdp1_read
• function fdp1_write
• function fdp1_set_ipc_dli
• function fdp1_set_ipc_sensor
• function fdp1_write_lut
• function fdp1_set_lut
• function fdp1_configure_rpf
• function fdp1_configure_wpf
• function fdp1_configure_deint_mode
• function fdp1_device_process
• function job_ready
• function fdp1_m2m_job_abort
• function fdp1_m2m_device_run
• function device_frame_end
• function fdp1_vidioc_querycap
• function fdp1_enum_fmt
• function fdp1_enum_fmt_vid_cap
• function fdp1_enum_fmt_vid_out
• function fdp1_g_fmt
• function fdp1_compute_stride
• function fdp1_try_fmt_output
• function fdp1_try_fmt_capture
• function fdp1_try_fmt
• function fdp1_set_format
• function fdp1_s_fmt
• function fdp1_g_ctrl
• function fdp1_s_ctrl
• function fdp1_queue_setup
• function fdp1_buf_prepare_field
• function fdp1_buf_prepare
• function fdp1_buf_queue
• function fdp1_start_streaming
• function fdp1_stop_streaming

Annotated Snippet

struct fdp1_fmt {
	u32	fourcc;
	u8	bpp[3];
	u8	num_planes;
	u8	hsub;
	u8	vsub;
	u8	fmt;
	bool	swap_yc;
	bool	swap_uv;
	u8	swap;
	u8	types;
};

static const struct fdp1_fmt fdp1_formats[] = {
	/* RGB formats are only supported by the Write Pixel Formatter */

	{ V4L2_PIX_FMT_RGB332, { 8, 0, 0 }, 1, 1, 1, 0x00, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_XRGB444, { 16, 0, 0 }, 1, 1, 1, 0x01, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_XRGB555, { 16, 0, 0 }, 1, 1, 1, 0x04, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_RGB565, { 16, 0, 0 }, 1, 1, 1, 0x06, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_ABGR32, { 32, 0, 0 }, 1, 1, 1, 0x13, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_XBGR32, { 32, 0, 0 }, 1, 1, 1, 0x13, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_ARGB32, { 32, 0, 0 }, 1, 1, 1, 0x13, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_XRGB32, { 32, 0, 0 }, 1, 1, 1, 0x13, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_RGB24, { 24, 0, 0 }, 1, 1, 1, 0x15, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_BGR24, { 24, 0, 0 }, 1, 1, 1, 0x18, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_ARGB444, { 16, 0, 0 }, 1, 1, 1, 0x19, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD,
	  FDP1_CAPTURE },
	{ V4L2_PIX_FMT_ARGB555, { 16, 0, 0 }, 1, 1, 1, 0x1b, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD,
	  FDP1_CAPTURE },

	/* YUV Formats are supported by Read and Write Pixel Formatters */

	{ V4L2_PIX_FMT_NV16M, { 8, 16, 0 }, 2, 2, 1, 0x41, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE | FDP1_OUTPUT },
	{ V4L2_PIX_FMT_NV61M, { 8, 16, 0 }, 2, 2, 1, 0x41, false, true,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE | FDP1_OUTPUT },
	{ V4L2_PIX_FMT_NV12M, { 8, 16, 0 }, 2, 2, 2, 0x42, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE | FDP1_OUTPUT },
	{ V4L2_PIX_FMT_NV21M, { 8, 16, 0 }, 2, 2, 2, 0x42, false, true,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE | FDP1_OUTPUT },
	{ V4L2_PIX_FMT_UYVY, { 16, 0, 0 }, 1, 2, 1, 0x47, false, false,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE | FDP1_OUTPUT },
	{ V4L2_PIX_FMT_VYUY, { 16, 0, 0 }, 1, 2, 1, 0x47, false, true,
	  FD1_RWPF_SWAP_LLWD | FD1_RWPF_SWAP_LWRD |
	  FD1_RWPF_SWAP_WORD | FD1_RWPF_SWAP_BYTE,
	  FDP1_CAPTURE | FDP1_OUTPUT },
	{ V4L2_PIX_FMT_YUYV, { 16, 0, 0 }, 1, 2, 1, 0x47, true, false,

Annotation

• Immediate include surface: `linux/clk.h`, `linux/delay.h`, `linux/dma-mapping.h`, `linux/fs.h`, `linux/interrupt.h`, `linux/module.h`, `linux/of.h`, `linux/platform_device.h`.
• Detected declarations: `struct fdp1_fmt`, `struct fdp1_q_data`, `struct fdp1_field_buffer`, `struct fdp1_buffer`, `struct fdp1_job`, `struct fdp1_dev`, `struct fdp1_ctx`, `enum fdp1_deint_mode`, `function fdp1_fmt_is_rgb`, `function list_add_job`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.