Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * vimc-common.h Virtual Media Controller Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #ifndef _VIMC_COMMON_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #define _VIMC_COMMON_H_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <media/media-device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <media/v4l2-device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #define VIMC_PDEV_NAME "vimc"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) /* VIMC-specific controls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #define VIMC_CID_VIMC_BASE		(0x00f00000 | 0xf000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #define VIMC_CID_VIMC_CLASS		(0x00f00000 | 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #define VIMC_CID_TEST_PATTERN		(VIMC_CID_VIMC_BASE + 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #define VIMC_CID_MEAN_WIN_SIZE		(VIMC_CID_VIMC_BASE + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define VIMC_CID_OSD_TEXT_MODE		(VIMC_CID_VIMC_BASE + 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define VIMC_FRAME_MAX_WIDTH 4096
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define VIMC_FRAME_MAX_HEIGHT 2160
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define VIMC_FRAME_MIN_WIDTH 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define VIMC_FRAME_MIN_HEIGHT 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define VIMC_FRAME_INDEX(lin, col, width, bpp) ((lin * width + col) * bpp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) /* Source and sink pad checks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define VIMC_IS_SRC(pad)	(pad)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define VIMC_IS_SINK(pad)	(!(pad))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define VIMC_PIX_FMT_MAX_CODES 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39)  * vimc_colorimetry_clamp - Adjust colorimetry parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41)  * @fmt:		the pointer to struct v4l2_pix_format or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42)  *			struct v4l2_mbus_framefmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44)  * Entities must check if colorimetry given by the userspace is valid, if not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45)  * then set them as DEFAULT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define vimc_colorimetry_clamp(fmt)					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) do {									\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	if ((fmt)->colorspace == V4L2_COLORSPACE_DEFAULT		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	    || (fmt)->colorspace > V4L2_COLORSPACE_DCI_P3) {		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		(fmt)->colorspace = V4L2_COLORSPACE_DEFAULT;		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 		(fmt)->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		(fmt)->quantization = V4L2_QUANTIZATION_DEFAULT;	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 		(fmt)->xfer_func = V4L2_XFER_FUNC_DEFAULT;		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	}								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	if ((fmt)->ycbcr_enc > V4L2_YCBCR_ENC_SMPTE240M)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		(fmt)->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	if ((fmt)->quantization > V4L2_QUANTIZATION_LIM_RANGE)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 		(fmt)->quantization = V4L2_QUANTIZATION_DEFAULT;	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	if ((fmt)->xfer_func > V4L2_XFER_FUNC_SMPTE2084)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 		(fmt)->xfer_func = V4L2_XFER_FUNC_DEFAULT;		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65)  * struct vimc_pix_map - maps media bus code with v4l2 pixel format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67)  * @code:		media bus format code defined by MEDIA_BUS_FMT_* macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68)  * @bpp:		number of bytes each pixel occupies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69)  * @pixelformat:	pixel format defined by V4L2_PIX_FMT_* macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70)  * @bayer:		true if this is a bayer format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72)  * Struct which matches the MEDIA_BUS_FMT_* codes with the corresponding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73)  * V4L2_PIX_FMT_* fourcc pixelformat and its bytes per pixel (bpp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) struct vimc_pix_map {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	unsigned int code[VIMC_PIX_FMT_MAX_CODES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	unsigned int bpp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	u32 pixelformat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	bool bayer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83)  * struct vimc_ent_device - core struct that represents an entity in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84)  * topology
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86)  * @dev:		a pointer of the device struct of the driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87)  * @ent:		the pointer to struct media_entity for the node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88)  * @process_frame:	callback send a frame to that node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89)  * @vdev_get_format:	callback that returns the current format a pad, used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90)  *			only when is_media_entity_v4l2_video_device(ent) returns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91)  *			true
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93)  * Each node of the topology must create a vimc_ent_device struct. Depending on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94)  * the node it will be of an instance of v4l2_subdev or video_device struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95)  * where both contains a struct media_entity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96)  * Those structures should embedded the vimc_ent_device struct through
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97)  * v4l2_set_subdevdata() and video_set_drvdata() respectively, allowing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98)  * vimc_ent_device struct to be retrieved from the corresponding struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99)  * media_entity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct vimc_ent_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	struct media_entity *ent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	void * (*process_frame)(struct vimc_ent_device *ved,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 				const void *frame);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	void (*vdev_get_format)(struct vimc_ent_device *ved,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			      struct v4l2_pix_format *fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)  * struct vimc_device - main device for vimc driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)  * @pipe_cfg:	pointer to the vimc pipeline configuration structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)  * @ent_devs:	array of vimc_ent_device pointers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)  * @mdev:	the associated media_device parent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)  * @v4l2_dev:	Internal v4l2 parent device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct vimc_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	const struct vimc_pipeline_config *pipe_cfg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	struct vimc_ent_device **ent_devs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	struct media_device mdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	struct v4l2_device v4l2_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)  * struct vimc_ent_type		Structure for the callbacks of the entity types
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)  * @add:			initializes and registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)  *				vimc entity - called from vimc-core
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)  * @unregister:			unregisters vimc entity - called from vimc-core
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)  * @release:			releases vimc entity - called from the v4l2_dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)  *				release callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) struct vimc_ent_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	struct vimc_ent_device *(*add)(struct vimc_device *vimc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 				       const char *vcfg_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	void (*unregister)(struct vimc_ent_device *ved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	void (*release)(struct vimc_ent_device *ved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)  * struct vimc_ent_config	Structure which describes individual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)  *				configuration for each entity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)  * @name:			entity name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)  * @type:			contain the callbacks of this entity type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct vimc_ent_config {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	struct vimc_ent_type *type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)  * vimc_is_source - returns true if the entity has only source pads
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)  * @ent: pointer to &struct media_entity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) bool vimc_is_source(struct media_entity *ent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) extern struct vimc_ent_type vimc_sen_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) extern struct vimc_ent_type vimc_deb_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) extern struct vimc_ent_type vimc_sca_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) extern struct vimc_ent_type vimc_cap_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)  * vimc_pix_map_by_index - get vimc_pix_map struct by its index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)  * @i:			index of the vimc_pix_map struct in vimc_pix_map_list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) const struct vimc_pix_map *vimc_pix_map_by_index(unsigned int i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)  * vimc_mbus_code_by_index - get mbus code by its index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)  * @index:		index of the mbus code in vimc_pix_map_list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)  * Returns 0 if no mbus code is found for the given index.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) u32 vimc_mbus_code_by_index(unsigned int index);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)  * vimc_pix_map_by_code - get vimc_pix_map struct by media bus code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)  * @code:		media bus format code defined by MEDIA_BUS_FMT_* macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) const struct vimc_pix_map *vimc_pix_map_by_code(u32 code);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)  * vimc_pix_map_by_pixelformat - get vimc_pix_map struct by v4l2 pixel format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)  * @pixelformat:	pixel format defined by V4L2_PIX_FMT_* macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) const struct vimc_pix_map *vimc_pix_map_by_pixelformat(u32 pixelformat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)  * vimc_ent_sd_register - initialize and register a subdev node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)  * @ved:	the vimc_ent_device struct to be initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)  * @sd:		the v4l2_subdev struct to be initialize and registered
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)  * @v4l2_dev:	the v4l2 device to register the v4l2_subdev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)  * @name:	name of the sub-device. Please notice that the name must be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)  *		unique.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)  * @function:	media entity function defined by MEDIA_ENT_F_* macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)  * @num_pads:	number of pads to initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)  * @pads:	the array of pads of the entity, the caller should set the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209)  *		flags of the pads
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)  * @sd_ops:	pointer to &struct v4l2_subdev_ops.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)  * Helper function initialize and register the struct vimc_ent_device and struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)  * v4l2_subdev which represents a subdev node in the topology
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) int vimc_ent_sd_register(struct vimc_ent_device *ved,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 			 struct v4l2_subdev *sd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 			 struct v4l2_device *v4l2_dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			 const char *const name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 			 u32 function,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			 u16 num_pads,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 			 struct media_pad *pads,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			 const struct v4l2_subdev_ops *sd_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)  * vimc_vdev_link_validate - validates a media link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)  * @link: pointer to &struct media_link
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)  * This function calls validates if a media link is valid for streaming.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) int vimc_vdev_link_validate(struct media_link *link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) #endif