drivers/media/platform/ti/omap3isp/ispcsi2.h

Source file repositories/reference/linux-study-clean/drivers/media/platform/ti/omap3isp/ispcsi2.h

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/ti/omap3isp/ispcsi2.h
Extension
.h
Size
3639 bytes
Lines
153
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 isp_csi2_ctx_cfg {
	u8 ctxnum;		/* context number 0 - 7 */
	u8 dpcm_decompress;

	/* Fields in CSI2_CTx_CTRL2 - locked by CSI2_CTx_CTRL1.CTX_EN */
	u8 virtual_id;
	u16 format_id;		/* as in CSI2_CTx_CTRL2[9:0] */
	u8 dpcm_predictor;	/* 1: simple, 0: advanced */

	/* Fields in CSI2_CTx_CTRL1/3 - Shadowed */
	u16 alpha;
	u16 data_offset;
	u32 ping_addr;
	u32 pong_addr;
	u8 eof_enabled;
	u8 eol_enabled;
	u8 checksum_enabled;
	u8 enabled;
};

struct isp_csi2_timing_cfg {
	u8 ionum;			/* IO1 or IO2 as in CSI2_TIMING */
	unsigned force_rx_mode:1;
	unsigned stop_state_16x:1;
	unsigned stop_state_4x:1;
	u16 stop_state_counter;
};

struct isp_csi2_ctrl_cfg {
	bool vp_clk_enable;
	bool vp_only_enable;
	u8 vp_out_ctrl;
	enum isp_csi2_frame_mode frame_mode;
	bool ecc_enable;
	bool if_enable;
};

#define CSI2_PAD_SINK		0
#define CSI2_PAD_SOURCE		1
#define CSI2_PADS_NUM		2

#define CSI2_OUTPUT_CCDC	(1 << 0)
#define CSI2_OUTPUT_MEMORY	(1 << 1)

struct isp_csi2_device {
	struct v4l2_subdev subdev;
	struct media_pad pads[CSI2_PADS_NUM];
	struct v4l2_mbus_framefmt formats[CSI2_PADS_NUM];

	struct isp_video video_out;
	struct isp_device *isp;

	u8 available;		/* Is the IP present on the silicon? */

	/* mem resources - enums as defined in enum isp_mem_resources */
	u8 regs1;
	u8 regs2;

	u32 output; /* output to CCDC, memory or both? */
	bool dpcm_decompress;
	unsigned int frame_skip;

	struct isp_csiphy *phy;
	struct isp_csi2_ctx_cfg contexts[ISP_CSI2_MAX_CTX_NUM + 1];
	struct isp_csi2_timing_cfg timing[2];
	struct isp_csi2_ctrl_cfg ctrl;
	enum isp_pipeline_stream_state state;
	wait_queue_head_t wait;
	atomic_t stopping;
};

void omap3isp_csi2_isr(struct isp_csi2_device *csi2);
int omap3isp_csi2_reset(struct isp_csi2_device *csi2);
int omap3isp_csi2_init(struct isp_device *isp);
void omap3isp_csi2_cleanup(struct isp_device *isp);
void omap3isp_csi2_unregister_entities(struct isp_csi2_device *csi2);
int omap3isp_csi2_register_entities(struct isp_csi2_device *csi2,
				    struct v4l2_device *vdev);
#endif	/* OMAP3_ISP_CSI2_H */

Annotation

Implementation Notes