1 files changed, 241 insertions, 0 deletions
diff --git a/drivers/media/test-drivers/vimc/vimc-common.h b/drivers/media/test-drivers/vimc/vimc-common.h
new file mode 100644
index 000000000..7641a101a
--- /dev/null
+++ b/drivers/media/test-drivers/vimc/vimc-common.h
@@ -0,0 +1,241 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * vimc-common.h Virtual Media Controller Driver
+ *
+ * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
+ */
+
+#ifndef _VIMC_COMMON_H_
+#define _VIMC_COMMON_H_
+
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <media/media-device.h>
+#include <media/v4l2-device.h>
+
+#define VIMC_PDEV_NAME "vimc"
+
+/* VIMC-specific controls */
+#define VIMC_CID_VIMC_BASE		(0x00f00000 | 0xf000)
+#define VIMC_CID_VIMC_CLASS		(0x00f00000 | 1)
+#define VIMC_CID_TEST_PATTERN		(VIMC_CID_VIMC_BASE + 0)
+#define VIMC_CID_MEAN_WIN_SIZE		(VIMC_CID_VIMC_BASE + 1)
+#define VIMC_CID_OSD_TEXT_MODE		(VIMC_CID_VIMC_BASE + 2)
+
+#define VIMC_FRAME_MAX_WIDTH 4096
+#define VIMC_FRAME_MAX_HEIGHT 2160
+#define VIMC_FRAME_MIN_WIDTH 16
+#define VIMC_FRAME_MIN_HEIGHT 16
+
+#define VIMC_FRAME_INDEX(lin, col, width, bpp) ((lin * width + col) * bpp)
+
+/* Source and sink pad checks */
+#define VIMC_IS_SRC(pad)	(pad)
+#define VIMC_IS_SINK(pad)	(!(pad))
+
+#define VIMC_PIX_FMT_MAX_CODES 8
+
+extern unsigned int vimc_allocator;
+
+enum vimc_allocator_type {
+	VIMC_ALLOCATOR_VMALLOC = 0,
+	VIMC_ALLOCATOR_DMA_CONTIG = 1,
+};
+
+/**
+ * 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 {
+	unsigned int code[VIMC_PIX_FMT_MAX_CODES];
+	unsigned int 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,
+				const void *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 {
+	const struct 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,
+				       const char *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 {
+	const char *name;
+	struct 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);
+
+extern struct vimc_ent_type vimc_sensor_type;
+extern struct vimc_ent_type vimc_debayer_type;
+extern struct vimc_ent_type vimc_scaler_type;
+extern struct vimc_ent_type vimc_capture_type;
+extern struct vimc_ent_type vimc_lens_type;
+
+/**
+ * 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
+ */
+const struct vimc_pix_map *vimc_pix_map_by_index(unsigned int 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(unsigned int 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
+ */
+const struct 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
+ */
+const struct 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
+ * @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,
+			 const char *const name,
+			 u32 function,
+			 u16 num_pads,
+			 struct media_pad *pads,
+			 const struct 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