// SPDX-License-Identifier: GPL-2.0+
/*
* vsp1_rwpf.c -- R-Car VSP1 Read and Write Pixel Formatters
*
* Copyright (C) 2013-2014 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart ([email protected])
*/
#include <media/v4l2-subdev.h>
#include "vsp1.h"
#include "vsp1_rwpf.h"
#include "vsp1_video.h"
#define RWPF_MIN_WIDTH 1
#define RWPF_MIN_HEIGHT 1
/* -----------------------------------------------------------------------------
* V4L2 Subdevice Operations
*/
static int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
static const unsigned int codes[] = {
MEDIA_BUS_FMT_ARGB8888_1X32,
MEDIA_BUS_FMT_AHSV8888_1X32,
MEDIA_BUS_FMT_AYUV8_1X32,
};
if (code->index >= ARRAY_SIZE(codes))
return -EINVAL;
code->code = codes[code->index];
return 0;
}
static int vsp1_rwpf_enum_frame_size(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct vsp1_rwpf *rwpf = to_rwpf(subdev);
return vsp1_subdev_enum_frame_size(subdev, sd_state, fse,
RWPF_MIN_WIDTH,
RWPF_MIN_HEIGHT, rwpf->max_width,
rwpf->max_height);
}
static int vsp1_rwpf_set_format(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct vsp1_rwpf *rwpf = to_rwpf(subdev);
struct v4l2_subdev_state *state;
struct v4l2_mbus_framefmt *format;
int ret = 0;
mutex_lock(&rwpf->entity.lock);
state = vsp1_entity_get_state(&rwpf->entity, sd_state, fmt->which);
if (!state) {
ret = -EINVAL;
goto done;
}
/* Default to YUV if the requested format is not supported. */
if (fmt->format.code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
fmt->format.code != MEDIA_BUS_FMT_AHSV8888_1X32 &&
fmt->format.code != MEDIA_BUS_FMT_AYUV8_1X32)
fmt->format.code = MEDIA_BUS_FMT_AYUV8_1X32;
format = v4l2_subdev_state_get_format(state, fmt->pad);
if (fmt->pad == RWPF_PAD_SOURCE) {
/*
* The RWPF performs format conversion but can't scale, only the
* format code can be changed on the source pad.
*/
format->code = fmt->format.code;
fmt->format = *format;
goto done;
}
format->code = fmt->format.code;
format->width = clamp_t(unsigned int, fmt->format.width,
RWPF_MIN_WIDTH, rwpf->max_width);
format->height = clamp_t(unsigned int, fmt->format.height,
RWPF_MIN_HEIGHT, rwpf->max_height);
format->field = V4L2_FIELD_NONE;
format->colorspace = V4L2_COLORSPACE_SRGB;
fmt->format = *format;
if (rwpf->entity.type == VSP1_ENTITY_RPF) {
struct v4l2_rect *crop;
/* Update the sink crop rectangle. */
crop = v4l2_subdev_state_get_crop(state, RWPF_PAD_SINK);
crop->left = 0;
crop->top = 0;
crop->width = fmt->format.width;
crop->height = fmt->format.height;
}
/* Propagate the format to the source pad. */
format = v4l2_subdev_state_get_format(state, RWPF_PAD_SOURCE);
*format = fmt->format;
if (rwpf->flip.rotate) {
format->width = fmt->format.height;
format->height = fmt->format.width;
}
done:
mutex_unlock(&rwpf->entity.lock);
return ret;
}
static int vsp1_rwpf_get_selection(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct vsp1_rwpf *rwpf = to_rwpf(subdev);
struct v4l2_subdev_state *state;
struct v4l2_mbus_framefmt *format;
int ret = 0;
/*
* Cropping is only supported on the RPF and is implemented on the sink
* pad.
*/
if (rwpf->entity.type == VSP1_ENTITY_WPF || sel->pad != RWPF_PAD_SINK)
return -EINVAL;
mutex_lock(&rwpf->entity.lock);
state = vsp1_entity_get_state(&rwpf->entity, sd_state, sel->which);
if (!state) {
ret = -EINVAL;
goto done;
}
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
sel->r = *v4l2_subdev_state_get_crop(state, RWPF_PAD_SINK);
break;
case V4L2_SEL_TGT_CROP_BOUNDS:
format = v4l2_subdev_state_get_format(state, RWPF_PAD_SINK);
sel->r.left = 0;
sel->r.top = 0;
sel->r.width = format->width;
sel->r.height = format->height;
break;
default:
ret = -EINVAL;
break;
}
done:
mutex_unlock(&rwpf->entity.lock);
return ret;
}
static int vsp1_rwpf_set_selection(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct vsp1_rwpf *rwpf = to_rwpf(subdev);
struct v4l2_subdev_state *state;
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
int ret = 0;
/*
* Cropping is only supported on the RPF and is implemented on the sink
* pad.
*/
if (rwpf->entity.type == VSP1_ENTITY_WPF || sel->pad != RWPF_PAD_SINK)
return -EINVAL;
if (sel->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
mutex_lock(&rwpf->entity.lock);
state = vsp1_entity_get_state(&rwpf->entity, sd_state, sel->which);
if (!state) {
ret = -EINVAL;
goto done;
}
/* Make sure the crop rectangle is entirely contained in the image. */
format = v4l2_subdev_state_get_format(state, RWPF_PAD_SINK);
/*
* Restrict the crop rectangle coordinates to multiples of 2 to avoid
* shifting the color plane.
*/
if (format->code == MEDIA_BUS_FMT_AYUV8_1X32) {
sel->r.left = ALIGN(sel->r.left, 2);
sel->r.top = ALIGN(sel->r.top, 2);
sel->r.width = round_down(sel->r.width, 2);
sel->r.height = round_down(sel->r.height, 2);
}
sel->r.left = min_t(unsigned int, sel->r.left, format->width - 2);
sel->r.top = min_t(unsigned int, sel->r.top, format->height - 2);
sel->r.width = min_t(unsigned int, sel->r.width,
format->width - sel->r.left);
sel->r.height = min_t(unsigned int, sel->r.height,
format->height - sel->r.top);
crop = v4l2_subdev_state_get_crop(state, RWPF_PAD_SINK);
*crop = sel->r;
/* Propagate the format to the source pad. */
format = v4l2_subdev_state_get_format(state, RWPF_PAD_SOURCE);
format->width = crop->width;
format->height = crop->height;
done:
mutex_unlock(&rwpf->entity.lock);
return ret;
}
static const struct v4l2_subdev_pad_ops vsp1_rwpf_pad_ops = {
.enum_mbus_code = vsp1_rwpf_enum_mbus_code,
.enum_frame_size = vsp1_rwpf_enum_frame_size,
.get_fmt = vsp1_subdev_get_pad_format,
.set_fmt = vsp1_rwpf_set_format,
.get_selection = vsp1_rwpf_get_selection,
.set_selection = vsp1_rwpf_set_selection,
};
const struct v4l2_subdev_ops vsp1_rwpf_subdev_ops = {
.pad = &vsp1_rwpf_pad_ops,
};
/* -----------------------------------------------------------------------------
* Controls
*/
static int vsp1_rwpf_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vsp1_rwpf *rwpf =
container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
switch (ctrl->id) {
case V4L2_CID_ALPHA_COMPONENT:
rwpf->alpha = ctrl->val;
break;
}
return 0;
}
static const struct v4l2_ctrl_ops vsp1_rwpf_ctrl_ops = {
.s_ctrl = vsp1_rwpf_s_ctrl,
};
int vsp1_rwpf_init_ctrls(struct vsp1_rwpf *rwpf, unsigned int ncontrols)
{
v4l2_ctrl_handler_init(&rwpf->ctrls, ncontrols + 1);
v4l2_ctrl_new_std(&rwpf->ctrls, &vsp1_rwpf_ctrl_ops,
V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 255);
rwpf->entity.subdev.ctrl_handler = &rwpf->ctrls;
return rwpf->ctrls.error;
}
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