linux/drivers/media/platform/renesas/vsp1/vsp1_hgo.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * vsp1_hgo.c  --  R-Car VSP1 Histogram Generator 1D
 *
 * Copyright (C) 2016 Renesas Electronics Corporation
 *
 * Contact: Laurent Pinchart ([email protected])
 */

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

#include <media/v4l2-subdev.h>
#include <media/videobuf2-vmalloc.h>

#include "vsp1.h"
#include "vsp1_dl.h"
#include "vsp1_hgo.h"

#define HGO_DATA_SIZE …

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

static inline u32 vsp1_hgo_read(struct vsp1_hgo *hgo, u32 reg)
{ … }

static inline void vsp1_hgo_write(struct vsp1_hgo *hgo,
				  struct vsp1_dl_body *dlb, u32 reg, u32 data)
{ … }

/* -----------------------------------------------------------------------------
 * Frame End Handler
 */

void vsp1_hgo_frame_end(struct vsp1_entity *entity)
{ … }

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

#define V4L2_CID_VSP1_HGO_MAX_RGB …
#define V4L2_CID_VSP1_HGO_NUM_BINS …

static const struct v4l2_ctrl_config hgo_max_rgb_control = …;

static const s64 hgo_num_bins[] = …;

static const struct v4l2_ctrl_config hgo_num_bins_control = …;

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

static void hgo_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 hgo_entity_ops = …;

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

static const unsigned int hgo_mbus_formats[] = …;

struct vsp1_hgo *vsp1_hgo_create(struct vsp1_device *vsp1)
{ … }