linux/drivers/media/platform/renesas/vsp1/vsp1_brx.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * vsp1_brx.c  --  R-Car VSP1 Blend ROP Unit (BRU and BRS)
 *
 * Copyright (C) 2013 Renesas Corporation
 *
 * Contact: Laurent Pinchart ([email protected])
 */

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

#include <media/v4l2-subdev.h>

#include "vsp1.h"
#include "vsp1_brx.h"
#include "vsp1_dl.h"
#include "vsp1_pipe.h"
#include "vsp1_rwpf.h"
#include "vsp1_video.h"

#define BRX_MIN_SIZE …
#define BRX_MAX_SIZE …

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

static inline void vsp1_brx_write(struct vsp1_brx *brx,
				  struct vsp1_dl_body *dlb, u32 reg, u32 data)
{ … }

/* -----------------------------------------------------------------------------
 * Controls
 */

static int brx_s_ctrl(struct v4l2_ctrl *ctrl)
{ … }

static const struct v4l2_ctrl_ops brx_ctrl_ops = …;

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

/*
 * The BRx can't perform format conversion, all sink and source formats must be
 * identical. We pick the format on the first sink pad (pad 0) and propagate it
 * to all other pads.
 */

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

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

static void brx_try_format(struct vsp1_brx *brx,
			   struct v4l2_subdev_state *sd_state,
			   unsigned int pad, struct v4l2_mbus_framefmt *fmt)
{ … }

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

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

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

static const struct v4l2_subdev_pad_ops brx_pad_ops = …;

static const struct v4l2_subdev_ops brx_ops = …;

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

static void brx_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 brx_entity_ops = …;

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

struct vsp1_brx *vsp1_brx_create(struct vsp1_device *vsp1,
				 enum vsp1_entity_type type)
{ … }