Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0+
/*
 * vsp1_sru.c  --  R-Car VSP1 Super Resolution Unit
 *
 * 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_pipe.h"
#include "vsp1_sru.h"
 
#define SRU_MIN_SIZE				4U
#define SRU_MAX_SIZE				8190U
 
/* -----------------------------------------------------------------------------
 * Device Access
 */
 
static inline void vsp1_sru_write(struct vsp1_sru *sru,
<------><------><------><------>  struct vsp1_dl_body *dlb, u32 reg, u32 data)
{
<------>vsp1_dl_body_write(dlb, reg, data);
}
 
/* -----------------------------------------------------------------------------
 * Controls
 */
 
#define V4L2_CID_VSP1_SRU_INTENSITY		(V4L2_CID_USER_BASE | 0x1001)
 
struct vsp1_sru_param {
<------>u32 ctrl0;
<------>u32 ctrl2;
};
 
#define VI6_SRU_CTRL0_PARAMS(p0, p1)			\
<------>(((p0) << VI6_SRU_CTRL0_PARAM0_SHIFT) |		\
<------> ((p1) << VI6_SRU_CTRL0_PARAM1_SHIFT))
 
#define VI6_SRU_CTRL2_PARAMS(p6, p7, p8)		\
<------>(((p6) << VI6_SRU_CTRL2_PARAM6_SHIFT) |		\
<------> ((p7) << VI6_SRU_CTRL2_PARAM7_SHIFT) |		\
<------> ((p8) << VI6_SRU_CTRL2_PARAM8_SHIFT))
 
static const struct vsp1_sru_param vsp1_sru_params[] = {
<------>{
<------><------>.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) | VI6_SRU_CTRL0_EN,
<------><------>.ctrl2 = VI6_SRU_CTRL2_PARAMS(24, 40, 255),
<------>}, {
<------><------>.ctrl0 = VI6_SRU_CTRL0_PARAMS(256, 4) | VI6_SRU_CTRL0_EN,
<------><------>.ctrl2 = VI6_SRU_CTRL2_PARAMS(8, 16, 255),
<------>}, {
<------><------>.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) | VI6_SRU_CTRL0_EN,
<------><------>.ctrl2 = VI6_SRU_CTRL2_PARAMS(36, 60, 255),
<------>}, {
<------><------>.ctrl0 = VI6_SRU_CTRL0_PARAMS(384, 5) | VI6_SRU_CTRL0_EN,
<------><------>.ctrl2 = VI6_SRU_CTRL2_PARAMS(12, 27, 255),
<------>}, {
<------><------>.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) | VI6_SRU_CTRL0_EN,
<------><------>.ctrl2 = VI6_SRU_CTRL2_PARAMS(48, 80, 255),
<------>}, {
<------><------>.ctrl0 = VI6_SRU_CTRL0_PARAMS(511, 6) | VI6_SRU_CTRL0_EN,
<------><------>.ctrl2 = VI6_SRU_CTRL2_PARAMS(16, 36, 255),
<------>},
};
 
static int sru_s_ctrl(struct v4l2_ctrl *ctrl)
{
<------>struct vsp1_sru *sru =
<------><------>container_of(ctrl->handler, struct vsp1_sru, ctrls);
 
<------>switch (ctrl->id) {
<------>case V4L2_CID_VSP1_SRU_INTENSITY:
<------><------>sru->intensity = ctrl->val;
<------><------>break;
<------>}
 
<------>return 0;
}
 
static const struct v4l2_ctrl_ops sru_ctrl_ops = {
<------>.s_ctrl = sru_s_ctrl,
};
 
static const struct v4l2_ctrl_config sru_intensity_control = {
<------>.ops = &sru_ctrl_ops,
<------>.id = V4L2_CID_VSP1_SRU_INTENSITY,
<------>.name = "Intensity",
<------>.type = V4L2_CTRL_TYPE_INTEGER,
<------>.min = 1,
<------>.max = 6,
<------>.def = 1,
<------>.step = 1,
};
 
/* -----------------------------------------------------------------------------
 * V4L2 Subdevice Operations
 */
 
static int sru_enum_mbus_code(struct v4l2_subdev *subdev,
<------><------><------>      struct v4l2_subdev_pad_config *cfg,
<------><------><------>      struct v4l2_subdev_mbus_code_enum *code)
{
<------>static const unsigned int codes[] = {
<------><------>MEDIA_BUS_FMT_ARGB8888_1X32,
<------><------>MEDIA_BUS_FMT_AYUV8_1X32,
<------>};
 
<------>return vsp1_subdev_enum_mbus_code(subdev, cfg, code, codes,
<------><------><------><------><------>  ARRAY_SIZE(codes));
}
 
static int sru_enum_frame_size(struct v4l2_subdev *subdev,
<------><------><------>       struct v4l2_subdev_pad_config *cfg,
<------><------><------>       struct v4l2_subdev_frame_size_enum *fse)
{
<------>struct vsp1_sru *sru = to_sru(subdev);
<------>struct v4l2_subdev_pad_config *config;
<------>struct v4l2_mbus_framefmt *format;
<------>int ret = 0;
 
<------>config = vsp1_entity_get_pad_config(&sru->entity, cfg, fse->which);
<------>if (!config)
<------><------>return -EINVAL;
 
<------>format = vsp1_entity_get_pad_format(&sru->entity, config, SRU_PAD_SINK);
 
<------>mutex_lock(&sru->entity.lock);
 
<------>if (fse->index || fse->code != format->code) {
<------><------>ret = -EINVAL;
<------><------>goto done;
<------>}
 
<------>if (fse->pad == SRU_PAD_SINK) {
<------><------>fse->min_width = SRU_MIN_SIZE;
<------><------>fse->max_width = SRU_MAX_SIZE;
<------><------>fse->min_height = SRU_MIN_SIZE;
<------><------>fse->max_height = SRU_MAX_SIZE;
<------>} else {
<------><------>fse->min_width = format->width;
<------><------>fse->min_height = format->height;
<------><------>if (format->width <= SRU_MAX_SIZE / 2 &&
<------><------>    format->height <= SRU_MAX_SIZE / 2) {
<------><------><------>fse->max_width = format->width * 2;
<------><------><------>fse->max_height = format->height * 2;
<------><------>} else {
<------><------><------>fse->max_width = format->width;
<------><------><------>fse->max_height = format->height;
<------><------>}
<------>}
 
done:
<------>mutex_unlock(&sru->entity.lock);
<------>return ret;
}
 
static void sru_try_format(struct vsp1_sru *sru,
<------><------><------>   struct v4l2_subdev_pad_config *config,
<------><------><------>   unsigned int pad, struct v4l2_mbus_framefmt *fmt)
{
<------>struct v4l2_mbus_framefmt *format;
<------>unsigned int input_area;
<------>unsigned int output_area;
 
<------>switch (pad) {
<------>case SRU_PAD_SINK:
<------><------>/* Default to YUV if the requested format is not supported. */
<------><------>if (fmt->code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
<------><------>    fmt->code != MEDIA_BUS_FMT_AYUV8_1X32)
<------><------><------>fmt->code = MEDIA_BUS_FMT_AYUV8_1X32;
 
<------><------>fmt->width = clamp(fmt->width, SRU_MIN_SIZE, SRU_MAX_SIZE);
<------><------>fmt->height = clamp(fmt->height, SRU_MIN_SIZE, SRU_MAX_SIZE);
<------><------>break;
 
<------>case SRU_PAD_SOURCE:
<------><------>/* The SRU can't perform format conversion. */
<------><------>format = vsp1_entity_get_pad_format(&sru->entity, config,
<------><------><------><------><------><------>    SRU_PAD_SINK);
<------><------>fmt->code = format->code;
 
<------><------>/*
<------><------> * We can upscale by 2 in both direction, but not independently.
<------><------> * Compare the input and output rectangles areas (avoiding
<------><------> * integer overflows on the output): if the requested output
<------><------> * area is larger than 1.5^2 the input area upscale by two,
<------><------> * otherwise don't scale.
<------><------> */
<------><------>input_area = format->width * format->height;
<------><------>output_area = min(fmt->width, SRU_MAX_SIZE)
<------><------><------>    * min(fmt->height, SRU_MAX_SIZE);
 
<------><------>if (fmt->width <= SRU_MAX_SIZE / 2 &&
<------><------>    fmt->height <= SRU_MAX_SIZE / 2 &&
<------><------>    output_area > input_area * 9 / 4) {
<------><------><------>fmt->width = format->width * 2;
<------><------><------>fmt->height = format->height * 2;
<------><------>} else {
<------><------><------>fmt->width = format->width;
<------><------><------>fmt->height = format->height;
<------><------>}
<------><------>break;
<------>}
 
<------>fmt->field = V4L2_FIELD_NONE;
<------>fmt->colorspace = V4L2_COLORSPACE_SRGB;
}
 
static int sru_set_format(struct v4l2_subdev *subdev,
<------><------><------>  struct v4l2_subdev_pad_config *cfg,
<------><------><------>  struct v4l2_subdev_format *fmt)
{
<------>struct vsp1_sru *sru = to_sru(subdev);
<------>struct v4l2_subdev_pad_config *config;
<------>struct v4l2_mbus_framefmt *format;
<------>int ret = 0;
 
<------>mutex_lock(&sru->entity.lock);
 
<------>config = vsp1_entity_get_pad_config(&sru->entity, cfg, fmt->which);
<------>if (!config) {
<------><------>ret = -EINVAL;
<------><------>goto done;
<------>}
 
<------>sru_try_format(sru, config, fmt->pad, &fmt->format);
 
<------>format = vsp1_entity_get_pad_format(&sru->entity, config, fmt->pad);
<------>*format = fmt->format;
 
<------>if (fmt->pad == SRU_PAD_SINK) {
<------><------>/* Propagate the format to the source pad. */
<------><------>format = vsp1_entity_get_pad_format(&sru->entity, config,
<------><------><------><------><------><------>    SRU_PAD_SOURCE);
<------><------>*format = fmt->format;
 
<------><------>sru_try_format(sru, config, SRU_PAD_SOURCE, format);
<------>}
 
done:
<------>mutex_unlock(&sru->entity.lock);
<------>return ret;
}
 
static const struct v4l2_subdev_pad_ops sru_pad_ops = {
<------>.init_cfg = vsp1_entity_init_cfg,
<------>.enum_mbus_code = sru_enum_mbus_code,
<------>.enum_frame_size = sru_enum_frame_size,
<------>.get_fmt = vsp1_subdev_get_pad_format,
<------>.set_fmt = sru_set_format,
};
 
static const struct v4l2_subdev_ops sru_ops = {
<------>.pad    = &sru_pad_ops,
};
 
/* -----------------------------------------------------------------------------
 * VSP1 Entity Operations
 */
 
static void sru_configure_stream(struct vsp1_entity *entity,
<------><------><------><------> struct vsp1_pipeline *pipe,
<------><------><------><------> struct vsp1_dl_list *dl,
<------><------><------><------> struct vsp1_dl_body *dlb)
{
<------>const struct vsp1_sru_param *param;
<------>struct vsp1_sru *sru = to_sru(&entity->subdev);
<------>struct v4l2_mbus_framefmt *input;
<------>struct v4l2_mbus_framefmt *output;
<------>u32 ctrl0;
 
<------>input = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
<------><------><------><------><------>   SRU_PAD_SINK);
<------>output = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
<------><------><------><------><------>    SRU_PAD_SOURCE);
 
<------>if (input->code == MEDIA_BUS_FMT_ARGB8888_1X32)
<------><------>ctrl0 = VI6_SRU_CTRL0_PARAM2 | VI6_SRU_CTRL0_PARAM3
<------><------>      | VI6_SRU_CTRL0_PARAM4;
<------>else
<------><------>ctrl0 = VI6_SRU_CTRL0_PARAM3;
 
<------>if (input->width != output->width)
<------><------>ctrl0 |= VI6_SRU_CTRL0_MODE_UPSCALE;
 
<------>param = &vsp1_sru_params[sru->intensity - 1];
 
<------>ctrl0 |= param->ctrl0;
 
<------>vsp1_sru_write(sru, dlb, VI6_SRU_CTRL0, ctrl0);
<------>vsp1_sru_write(sru, dlb, VI6_SRU_CTRL1, VI6_SRU_CTRL1_PARAM5);
<------>vsp1_sru_write(sru, dlb, VI6_SRU_CTRL2, param->ctrl2);
}
 
static unsigned int sru_max_width(struct vsp1_entity *entity,
<------><------><------><------>  struct vsp1_pipeline *pipe)
{
<------>struct vsp1_sru *sru = to_sru(&entity->subdev);
<------>struct v4l2_mbus_framefmt *input;
<------>struct v4l2_mbus_framefmt *output;
 
<------>input = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
<------><------><------><------><------>   SRU_PAD_SINK);
<------>output = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
<------><------><------><------><------>    SRU_PAD_SOURCE);
 
<------>/*
<------> * The maximum input width of the SRU is 288 input pixels, but 32
<------> * pixels are reserved to support overlapping partition windows when
<------> * scaling.
<------> */
<------>if (input->width != output->width)
<------><------>return 512;
<------>else
<------><------>return 256;
}
 
static void sru_partition(struct vsp1_entity *entity,
<------><------><------>  struct vsp1_pipeline *pipe,
<------><------><------>  struct vsp1_partition *partition,
<------><------><------>  unsigned int partition_idx,
<------><------><------>  struct vsp1_partition_window *window)
{
<------>struct vsp1_sru *sru = to_sru(&entity->subdev);
<------>struct v4l2_mbus_framefmt *input;
<------>struct v4l2_mbus_framefmt *output;
 
<------>input = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
<------><------><------><------><------>   SRU_PAD_SINK);
<------>output = vsp1_entity_get_pad_format(&sru->entity, sru->entity.config,
<------><------><------><------><------>    SRU_PAD_SOURCE);
 
<------>/* Adapt if SRUx2 is enabled. */
<------>if (input->width != output->width) {
<------><------>window->width /= 2;
<------><------>window->left /= 2;
<------>}
 
<------>partition->sru = *window;
}
 
static const struct vsp1_entity_operations sru_entity_ops = {
<------>.configure_stream = sru_configure_stream,
<------>.max_width = sru_max_width,
<------>.partition = sru_partition,
};
 
/* -----------------------------------------------------------------------------
 * Initialization and Cleanup
 */
 
struct vsp1_sru *vsp1_sru_create(struct vsp1_device *vsp1)
{
<------>struct vsp1_sru *sru;
<------>int ret;
 
<------>sru = devm_kzalloc(vsp1->dev, sizeof(*sru), GFP_KERNEL);
<------>if (sru == NULL)
<------><------>return ERR_PTR(-ENOMEM);
 
<------>sru->entity.ops = &sru_entity_ops;
<------>sru->entity.type = VSP1_ENTITY_SRU;
 
<------>ret = vsp1_entity_init(vsp1, &sru->entity, "sru", 2, &sru_ops,
<------><------><------>       MEDIA_ENT_F_PROC_VIDEO_SCALER);
<------>if (ret < 0)
<------><------>return ERR_PTR(ret);
 
<------>/* Initialize the control handler. */
<------>v4l2_ctrl_handler_init(&sru->ctrls, 1);
<------>v4l2_ctrl_new_custom(&sru->ctrls, &sru_intensity_control, NULL);
 
<------>sru->intensity = 1;
 
<------>sru->entity.subdev.ctrl_handler = &sru->ctrls;
 
<------>if (sru->ctrls.error) {
<------><------>dev_err(vsp1->dev, "sru: failed to initialize controls\n");
<------><------>ret = sru->ctrls.error;
<------><------>vsp1_entity_destroy(&sru->entity);
<------><------>return ERR_PTR(ret);
<------>}
 
<------>return sru;
}