drivers/media/platform/raspberrypi/rp1-cfe/pisp-fe.c

Source file repositories/reference/linux-study-clean/drivers/media/platform/raspberrypi/rp1-cfe/pisp-fe.c

File Facts

System: Linux kernel
Corpus path: drivers/media/platform/raspberrypi/rp1-cfe/pisp-fe.c
Extension: .c
Size: 18280 bytes
Lines: 606
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.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

linux/bitops.h
linux/delay.h
linux/moduleparam.h
linux/pm_runtime.h
linux/seq_file.h
media/videobuf2-dma-contig.h
cfe.h
pisp-fe.h
cfe-trace.h

Detected Declarations

struct pisp_fe_config_param
function pisp_fe_reg_read
function pisp_fe_reg_write
function pisp_fe_reg_write_relaxed
function pisp_fe_regs_show
function pisp_fe_config_write
function pisp_fe_isr
function pisp_fe_validate_output
function pisp_fe_validate_stats
function pisp_fe_validate_config
function memory
function pisp_fe_submit_job
function pisp_fe_start
function pisp_fe_stop
function pisp_fe_init_state
function pisp_fe_pad_set_fmt
function pisp_fe_link_validate
function pisp_fe_init
function pisp_fe_uninit

Annotated Snippet

struct pisp_fe_config_param {
	u32 dirty_flags;
	u32 dirty_flags_extra;
	size_t offset;
	size_t size;
};

static const struct pisp_fe_config_param pisp_fe_config_map[] = {
	/* *_dirty_flag_extra types */
	{ 0, PISP_FE_DIRTY_GLOBAL,
		offsetof(struct pisp_fe_config, global),
		sizeof(struct pisp_fe_global_config) },
	{ 0, PISP_FE_DIRTY_FLOATING,
		offsetof(struct pisp_fe_config, floating_stats),
		sizeof(struct pisp_fe_floating_stats_config) },
	{ 0, PISP_FE_DIRTY_OUTPUT_AXI,
		offsetof(struct pisp_fe_config, output_axi),
		sizeof(struct pisp_fe_output_axi_config) },
	/* *_dirty_flag types */
	{ PISP_FE_ENABLE_INPUT, 0,
		offsetof(struct pisp_fe_config, input),
		sizeof(struct pisp_fe_input_config) },
	{ PISP_FE_ENABLE_DECOMPRESS, 0,
		offsetof(struct pisp_fe_config, decompress),
		sizeof(struct pisp_decompress_config) },
	{ PISP_FE_ENABLE_DECOMPAND, 0,
		offsetof(struct pisp_fe_config, decompand),
		sizeof(struct pisp_fe_decompand_config) },
	{ PISP_FE_ENABLE_BLA, 0,
		offsetof(struct pisp_fe_config, bla),
		sizeof(struct pisp_bla_config) },
	{ PISP_FE_ENABLE_DPC, 0,
		offsetof(struct pisp_fe_config, dpc),
		sizeof(struct pisp_fe_dpc_config) },
	{ PISP_FE_ENABLE_STATS_CROP, 0,
		offsetof(struct pisp_fe_config, stats_crop),
		sizeof(struct pisp_fe_crop_config) },
	{ PISP_FE_ENABLE_BLC, 0,
		offsetof(struct pisp_fe_config, blc),
		sizeof(struct pisp_bla_config) },
	{ PISP_FE_ENABLE_CDAF_STATS, 0,
		offsetof(struct pisp_fe_config, cdaf_stats),
		sizeof(struct pisp_fe_cdaf_stats_config) },
	{ PISP_FE_ENABLE_AWB_STATS, 0,
		offsetof(struct pisp_fe_config, awb_stats),
		sizeof(struct pisp_fe_awb_stats_config) },
	{ PISP_FE_ENABLE_RGBY, 0,
		offsetof(struct pisp_fe_config, rgby),
		sizeof(struct pisp_fe_rgby_config) },
	{ PISP_FE_ENABLE_LSC, 0,
		offsetof(struct pisp_fe_config, lsc),
		sizeof(struct pisp_fe_lsc_config) },
	{ PISP_FE_ENABLE_AGC_STATS, 0,
		offsetof(struct pisp_fe_config, agc_stats),
		sizeof(struct pisp_agc_statistics) },
	{ PISP_FE_ENABLE_CROP0, 0,
		offsetof(struct pisp_fe_config, ch[0].crop),
		sizeof(struct pisp_fe_crop_config) },
	{ PISP_FE_ENABLE_DOWNSCALE0, 0,
		offsetof(struct pisp_fe_config, ch[0].downscale),
		sizeof(struct pisp_fe_downscale_config) },
	{ PISP_FE_ENABLE_COMPRESS0, 0,
		offsetof(struct pisp_fe_config, ch[0].compress),
		sizeof(struct pisp_compress_config) },
	{ PISP_FE_ENABLE_OUTPUT0, 0,
		offsetof(struct pisp_fe_config, ch[0].output),
		sizeof(struct pisp_fe_output_config) },
	{ PISP_FE_ENABLE_CROP1, 0,
		offsetof(struct pisp_fe_config, ch[1].crop),
		sizeof(struct pisp_fe_crop_config) },
	{ PISP_FE_ENABLE_DOWNSCALE1, 0,
		offsetof(struct pisp_fe_config, ch[1].downscale),
		sizeof(struct pisp_fe_downscale_config) },
	{ PISP_FE_ENABLE_COMPRESS1, 0,
		offsetof(struct pisp_fe_config, ch[1].compress),
		sizeof(struct pisp_compress_config) },
	{ PISP_FE_ENABLE_OUTPUT1, 0,
		offsetof(struct pisp_fe_config, ch[1].output),
		sizeof(struct pisp_fe_output_config) },
};

#define pisp_fe_dbg(fe, fmt, arg...) dev_dbg((fe)->v4l2_dev->dev, fmt, ##arg)
#define pisp_fe_info(fe, fmt, arg...) dev_info((fe)->v4l2_dev->dev, fmt, ##arg)
#define pisp_fe_err(fe, fmt, arg...) dev_err((fe)->v4l2_dev->dev, fmt, ##arg)

static inline u32 pisp_fe_reg_read(struct pisp_fe_device *fe, u32 offset)
{
	return readl(fe->base + offset);
}

Annotation

Immediate include surface: `linux/bitops.h`, `linux/delay.h`, `linux/moduleparam.h`, `linux/pm_runtime.h`, `linux/seq_file.h`, `media/videobuf2-dma-contig.h`, `cfe.h`, `pisp-fe.h`.
Detected declarations: `struct pisp_fe_config_param`, `function pisp_fe_reg_read`, `function pisp_fe_reg_write`, `function pisp_fe_reg_write_relaxed`, `function pisp_fe_regs_show`, `function pisp_fe_config_write`, `function pisp_fe_isr`, `function pisp_fe_validate_output`, `function pisp_fe_validate_stats`, `function pisp_fe_validate_config`.
Atlas domain: Driver Families / drivers/media.
Implementation status: source implementation candidate.

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.