395 lines
10 KiB
C
395 lines
10 KiB
C
// 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;
|
|
}
|