/** * vimc_colorimetry_clamp - Adjust colorimetry parameters * * @fmt: the pointer to struct v4l2_pix_format or * struct v4l2_mbus_framefmt * * Entities must check if colorimetry given by the userspace is valid, if not * then set them as DEFAULT
*/ #define vimc_colorimetry_clamp(fmt) \ do { \ if ((fmt)->colorspace == V4L2_COLORSPACE_DEFAULT \
|| (fmt)->colorspace > V4L2_COLORSPACE_DCI_P3) { \
(fmt)->colorspace = V4L2_COLORSPACE_DEFAULT; \
(fmt)->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; \
(fmt)->quantization = V4L2_QUANTIZATION_DEFAULT; \
(fmt)->xfer_func = V4L2_XFER_FUNC_DEFAULT; \
} \ if ((fmt)->ycbcr_enc > V4L2_YCBCR_ENC_SMPTE240M) \
(fmt)->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; \ if ((fmt)->quantization > V4L2_QUANTIZATION_LIM_RANGE) \
(fmt)->quantization = V4L2_QUANTIZATION_DEFAULT; \ if ((fmt)->xfer_func > V4L2_XFER_FUNC_SMPTE2084) \
(fmt)->xfer_func = V4L2_XFER_FUNC_DEFAULT; \
} while (0)
/** * struct vimc_pix_map - maps media bus code with v4l2 pixel format * * @code: media bus format code defined by MEDIA_BUS_FMT_* macros * @bpp: number of bytes each pixel occupies * @pixelformat: pixel format defined by V4L2_PIX_FMT_* macros * @bayer: true if this is a bayer format * * Struct which matches the MEDIA_BUS_FMT_* codes with the corresponding * V4L2_PIX_FMT_* fourcc pixelformat and its bytes per pixel (bpp)
*/ struct vimc_pix_map { unsignedint code[VIMC_PIX_FMT_MAX_CODES]; unsignedint bpp;
u32 pixelformat; bool bayer;
};
/** * struct vimc_ent_device - core struct that represents an entity in the * topology * * @dev: a pointer of the device struct of the driver * @ent: the pointer to struct media_entity for the node * @process_frame: callback send a frame to that node * @vdev_get_format: callback that returns the current format a pad, used * only when is_media_entity_v4l2_video_device(ent) returns * true * * Each node of the topology must create a vimc_ent_device struct. Depending on * the node it will be of an instance of v4l2_subdev or video_device struct * where both contains a struct media_entity. * Those structures should embedded the vimc_ent_device struct through * v4l2_set_subdevdata() and video_set_drvdata() respectively, allowing the * vimc_ent_device struct to be retrieved from the corresponding struct * media_entity
*/ struct vimc_ent_device { struct device *dev; struct media_entity *ent; void * (*process_frame)(struct vimc_ent_device *ved, constvoid *frame); void (*vdev_get_format)(struct vimc_ent_device *ved, struct v4l2_pix_format *fmt);
};
/** * struct vimc_device - main device for vimc driver * * @pipe_cfg: pointer to the vimc pipeline configuration structure * @ent_devs: array of vimc_ent_device pointers * @mdev: the associated media_device parent * @v4l2_dev: Internal v4l2 parent device
*/ struct vimc_device { conststruct vimc_pipeline_config *pipe_cfg; struct vimc_ent_device **ent_devs; struct media_device mdev; struct v4l2_device v4l2_dev;
};
/** * struct vimc_ent_type Structure for the callbacks of the entity types * * * @add: initializes and registers * vimc entity - called from vimc-core * @unregister: unregisters vimc entity - called from vimc-core * @release: releases vimc entity - called from the v4l2_dev * release callback
*/ struct vimc_ent_type { struct vimc_ent_device *(*add)(struct vimc_device *vimc, constchar *vcfg_name); void (*unregister)(struct vimc_ent_device *ved); void (*release)(struct vimc_ent_device *ved);
};
/** * struct vimc_ent_config Structure which describes individual * configuration for each entity * * @name: entity name * @type: contain the callbacks of this entity type *
*/ struct vimc_ent_config { constchar *name; conststruct vimc_ent_type *type;
};
/** * vimc_is_source - returns true if the entity has only source pads * * @ent: pointer to &struct media_entity *
*/ bool vimc_is_source(struct media_entity *ent);
/** * vimc_pix_map_by_index - get vimc_pix_map struct by its index * * @i: index of the vimc_pix_map struct in vimc_pix_map_list
*/ conststruct vimc_pix_map *vimc_pix_map_by_index(unsignedint i);
/** * vimc_mbus_code_by_index - get mbus code by its index * * @index: index of the mbus code in vimc_pix_map_list * * Returns 0 if no mbus code is found for the given index.
*/
u32 vimc_mbus_code_by_index(unsignedint index);
/** * vimc_pix_map_by_code - get vimc_pix_map struct by media bus code * * @code: media bus format code defined by MEDIA_BUS_FMT_* macros
*/ conststruct vimc_pix_map *vimc_pix_map_by_code(u32 code);
/** * vimc_pix_map_by_pixelformat - get vimc_pix_map struct by v4l2 pixel format * * @pixelformat: pixel format defined by V4L2_PIX_FMT_* macros
*/ conststruct vimc_pix_map *vimc_pix_map_by_pixelformat(u32 pixelformat);
/** * vimc_ent_sd_register - initialize and register a subdev node * * @ved: the vimc_ent_device struct to be initialize * @sd: the v4l2_subdev struct to be initialize and registered * @v4l2_dev: the v4l2 device to register the v4l2_subdev * @name: name of the sub-device. Please notice that the name must be * unique. * @function: media entity function defined by MEDIA_ENT_F_* macros * @num_pads: number of pads to initialize * @pads: the array of pads of the entity, the caller should set the * flags of the pads * @int_ops: pointer to &struct v4l2_subdev_internal_ops. * @sd_ops: pointer to &struct v4l2_subdev_ops. * * Helper function initialize and register the struct vimc_ent_device and struct * v4l2_subdev which represents a subdev node in the topology
*/ int vimc_ent_sd_register(struct vimc_ent_device *ved, struct v4l2_subdev *sd, struct v4l2_device *v4l2_dev, constchar *const name,
u32 function,
u16 num_pads, struct media_pad *pads, conststruct v4l2_subdev_internal_ops *int_ops, conststruct v4l2_subdev_ops *sd_ops);
/** * vimc_vdev_link_validate - validates a media link * * @link: pointer to &struct media_link * * This function calls validates if a media link is valid for streaming.
*/ int vimc_vdev_link_validate(struct media_link *link);
#endif
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