Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0+
/*
 * vsp1_hsit.c  --  R-Car VSP1 Hue Saturation value (Inverse) Transform
 *
 * Copyright (C) 2013 Renesas Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 */
 
#include <linux/device.h>
#include <linux/gfp.h>
 
#include <media/v4l2-subdev.h>
 
#include "vsp1.h"
#include "vsp1_dl.h"
#include "vsp1_hsit.h"
 
#define HSIT_MIN_SIZE				4U
#define HSIT_MAX_SIZE				8190U
 
/* -----------------------------------------------------------------------------
 * Device Access
 */
 
static inline void vsp1_hsit_write(struct vsp1_hsit *hsit,
<------><------><------><------>   struct vsp1_dl_body *dlb, u32 reg, u32 data)
{
<------>vsp1_dl_body_write(dlb, reg, data);
}
 
/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Operations
 */
 
static int hsit_enum_mbus_code(struct v4l2_subdev *subdev,
<------><------><------>       struct v4l2_subdev_pad_config *cfg,
<------><------><------>       struct v4l2_subdev_mbus_code_enum *code)
{
<------>struct vsp1_hsit *hsit = to_hsit(subdev);
 
<------>if (code->index > 0)
<------><------>return -EINVAL;
 
<------>if ((code->pad == HSIT_PAD_SINK && !hsit->inverse) |
<------>    (code->pad == HSIT_PAD_SOURCE && hsit->inverse))
<------><------>code->code = MEDIA_BUS_FMT_ARGB8888_1X32;
<------>else
<------><------>code->code = MEDIA_BUS_FMT_AHSV8888_1X32;
 
<------>return 0;
}
 
static int hsit_enum_frame_size(struct v4l2_subdev *subdev,
<------><------><------><------>struct v4l2_subdev_pad_config *cfg,
<------><------><------><------>struct v4l2_subdev_frame_size_enum *fse)
{
<------>return vsp1_subdev_enum_frame_size(subdev, cfg, fse, HSIT_MIN_SIZE,
<------><------><------><------><------>   HSIT_MIN_SIZE, HSIT_MAX_SIZE,
<------><------><------><------><------>   HSIT_MAX_SIZE);
}
 
static int hsit_set_format(struct v4l2_subdev *subdev,
<------><------><------>   struct v4l2_subdev_pad_config *cfg,
<------><------><------>   struct v4l2_subdev_format *fmt)
{
<------>struct vsp1_hsit *hsit = to_hsit(subdev);
<------>struct v4l2_subdev_pad_config *config;
<------>struct v4l2_mbus_framefmt *format;
<------>int ret = 0;
 
<------>mutex_lock(&hsit->entity.lock);
 
<------>config = vsp1_entity_get_pad_config(&hsit->entity, cfg, fmt->which);
<------>if (!config) {
<------><------>ret = -EINVAL;
<------><------>goto done;
<------>}
 
<------>format = vsp1_entity_get_pad_format(&hsit->entity, config, fmt->pad);
 
<------>if (fmt->pad == HSIT_PAD_SOURCE) {
<------><------>/*
<------><------> * The HST and HSI output format code and resolution can't be
<------><------> * modified.
<------><------> */
<------><------>fmt->format = *format;
<------><------>goto done;
<------>}
 
<------>format->code = hsit->inverse ? MEDIA_BUS_FMT_AHSV8888_1X32
<------><------>     : MEDIA_BUS_FMT_ARGB8888_1X32;
<------>format->width = clamp_t(unsigned int, fmt->format.width,
<------><------><------><------>HSIT_MIN_SIZE, HSIT_MAX_SIZE);
<------>format->height = clamp_t(unsigned int, fmt->format.height,
<------><------><------><------> HSIT_MIN_SIZE, HSIT_MAX_SIZE);
<------>format->field = V4L2_FIELD_NONE;
<------>format->colorspace = V4L2_COLORSPACE_SRGB;
 
<------>fmt->format = *format;
 
<------>/* Propagate the format to the source pad. */
<------>format = vsp1_entity_get_pad_format(&hsit->entity, config,
<------><------><------><------><------>    HSIT_PAD_SOURCE);
<------>*format = fmt->format;
<------>format->code = hsit->inverse ? MEDIA_BUS_FMT_ARGB8888_1X32
<------><------>     : MEDIA_BUS_FMT_AHSV8888_1X32;
 
done:
<------>mutex_unlock(&hsit->entity.lock);
<------>return ret;
}
 
static const struct v4l2_subdev_pad_ops hsit_pad_ops = {
<------>.init_cfg = vsp1_entity_init_cfg,
<------>.enum_mbus_code = hsit_enum_mbus_code,
<------>.enum_frame_size = hsit_enum_frame_size,
<------>.get_fmt = vsp1_subdev_get_pad_format,
<------>.set_fmt = hsit_set_format,
};
 
static const struct v4l2_subdev_ops hsit_ops = {
<------>.pad    = &hsit_pad_ops,
};
 
/* -----------------------------------------------------------------------------
 * VSP1 Entity Operations
 */
 
static void hsit_configure_stream(struct vsp1_entity *entity,
<------><------><------><------>  struct vsp1_pipeline *pipe,
<------><------><------><------>  struct vsp1_dl_list *dl,
<------><------><------><------>  struct vsp1_dl_body *dlb)
{
<------>struct vsp1_hsit *hsit = to_hsit(&entity->subdev);
 
<------>if (hsit->inverse)
<------><------>vsp1_hsit_write(hsit, dlb, VI6_HSI_CTRL, VI6_HSI_CTRL_EN);
<------>else
<------><------>vsp1_hsit_write(hsit, dlb, VI6_HST_CTRL, VI6_HST_CTRL_EN);
}
 
static const struct vsp1_entity_operations hsit_entity_ops = {
<------>.configure_stream = hsit_configure_stream,
};
 
/* -----------------------------------------------------------------------------
 * Initialization and Cleanup
 */
 
struct vsp1_hsit *vsp1_hsit_create(struct vsp1_device *vsp1, bool inverse)
{
<------>struct vsp1_hsit *hsit;
<------>int ret;
 
<------>hsit = devm_kzalloc(vsp1->dev, sizeof(*hsit), GFP_KERNEL);
<------>if (hsit == NULL)
<------><------>return ERR_PTR(-ENOMEM);
 
<------>hsit->inverse = inverse;
 
<------>hsit->entity.ops = &hsit_entity_ops;
 
<------>if (inverse)
<------><------>hsit->entity.type = VSP1_ENTITY_HSI;
<------>else
<------><------>hsit->entity.type = VSP1_ENTITY_HST;
 
<------>ret = vsp1_entity_init(vsp1, &hsit->entity, inverse ? "hsi" : "hst",
<------><------><------>       2, &hsit_ops,
<------><------><------>       MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV);
<------>if (ret < 0)
<------><------>return ERR_PTR(ret);
 
<------>return hsit;
}