linux/drivers/media/platform/renesas/vsp1/vsp1_uif.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * vsp1_uif.c  --  R-Car VSP1 User Logic Interface
 *
 * Copyright (C) 2017-2018 Laurent Pinchart
 *
 * Contact: Laurent Pinchart ([email protected])
 */

#include <linux/device.h>
#include <linux/gfp.h>
#include <linux/sys_soc.h>

#include <media/media-entity.h>
#include <media/v4l2-subdev.h>

#include "vsp1.h"
#include "vsp1_dl.h"
#include "vsp1_entity.h"
#include "vsp1_uif.h"

#define UIF_MIN_SIZE …
#define UIF_MAX_SIZE …

/* -----------------------------------------------------------------------------
 * Device Access
 */

static inline u32 vsp1_uif_read(struct vsp1_uif *uif, u32 reg)
{ … }

static inline void vsp1_uif_write(struct vsp1_uif *uif,
				  struct vsp1_dl_body *dlb, u32 reg, u32 data)
{ … }

u32 vsp1_uif_get_crc(struct vsp1_uif *uif)
{ … }

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Pad Operations
 */

static const unsigned int uif_codes[] = …;

static int uif_enum_mbus_code(struct v4l2_subdev *subdev,
			      struct v4l2_subdev_state *sd_state,
			      struct v4l2_subdev_mbus_code_enum *code)
{ … }

static int uif_enum_frame_size(struct v4l2_subdev *subdev,
			       struct v4l2_subdev_state *sd_state,
			       struct v4l2_subdev_frame_size_enum *fse)
{ … }

static int uif_set_format(struct v4l2_subdev *subdev,
			    struct v4l2_subdev_state *sd_state,
			    struct v4l2_subdev_format *fmt)
{ … }

static int uif_get_selection(struct v4l2_subdev *subdev,
			     struct v4l2_subdev_state *sd_state,
			     struct v4l2_subdev_selection *sel)
{ … }

static int uif_set_selection(struct v4l2_subdev *subdev,
			     struct v4l2_subdev_state *sd_state,
			     struct v4l2_subdev_selection *sel)
{ … }

/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Operations
 */

static const struct v4l2_subdev_pad_ops uif_pad_ops = …;

static const struct v4l2_subdev_ops uif_ops = …;

/* -----------------------------------------------------------------------------
 * VSP1 Entity Operations
 */

static void uif_configure_stream(struct vsp1_entity *entity,
				 struct v4l2_subdev_state *state,
				 struct vsp1_pipeline *pipe,
				 struct vsp1_dl_list *dl,
				 struct vsp1_dl_body *dlb)
{ … }

static const struct vsp1_entity_operations uif_entity_ops = …;

/* -----------------------------------------------------------------------------
 * Initialization and Cleanup
 */

static const struct soc_device_attribute vsp1_r8a7796[] = …;

struct vsp1_uif *vsp1_uif_create(struct vsp1_device *vsp1, unsigned int index)
{ … }