// SPDX-License-Identifier: GPL-2.0+
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/*
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* vsp1_rwpf.c -- R-Car VSP1 Read and Write Pixel Formatters
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*
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* Copyright (C) 2013-2014 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*/
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#include <media/v4l2-subdev.h>
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#include "vsp1.h"
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#include "vsp1_rwpf.h"
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#include "vsp1_video.h"
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#define RWPF_MIN_WIDTH 1
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#define RWPF_MIN_HEIGHT 1
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struct v4l2_rect *vsp1_rwpf_get_crop(struct vsp1_rwpf *rwpf,
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struct v4l2_subdev_pad_config *config)
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{
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return v4l2_subdev_get_try_crop(&rwpf->entity.subdev, config,
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RWPF_PAD_SINK);
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Pad Operations
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*/
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static int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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static const unsigned int codes[] = {
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MEDIA_BUS_FMT_ARGB8888_1X32,
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MEDIA_BUS_FMT_AHSV8888_1X32,
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MEDIA_BUS_FMT_AYUV8_1X32,
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};
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if (code->index >= ARRAY_SIZE(codes))
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return -EINVAL;
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code->code = codes[code->index];
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return 0;
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}
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static int vsp1_rwpf_enum_frame_size(struct v4l2_subdev *subdev,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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struct vsp1_rwpf *rwpf = to_rwpf(subdev);
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return vsp1_subdev_enum_frame_size(subdev, cfg, fse, RWPF_MIN_WIDTH,
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RWPF_MIN_HEIGHT, rwpf->max_width,
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rwpf->max_height);
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}
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static int vsp1_rwpf_set_format(struct v4l2_subdev *subdev,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct vsp1_rwpf *rwpf = to_rwpf(subdev);
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struct v4l2_subdev_pad_config *config;
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struct v4l2_mbus_framefmt *format;
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int ret = 0;
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mutex_lock(&rwpf->entity.lock);
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config = vsp1_entity_get_pad_config(&rwpf->entity, cfg, fmt->which);
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if (!config) {
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ret = -EINVAL;
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goto done;
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}
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/* Default to YUV if the requested format is not supported. */
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if (fmt->format.code != MEDIA_BUS_FMT_ARGB8888_1X32 &&
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fmt->format.code != MEDIA_BUS_FMT_AHSV8888_1X32 &&
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fmt->format.code != MEDIA_BUS_FMT_AYUV8_1X32)
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fmt->format.code = MEDIA_BUS_FMT_AYUV8_1X32;
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format = vsp1_entity_get_pad_format(&rwpf->entity, config, fmt->pad);
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if (fmt->pad == RWPF_PAD_SOURCE) {
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/*
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* The RWPF performs format conversion but can't scale, only the
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* format code can be changed on the source pad.
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*/
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format->code = fmt->format.code;
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fmt->format = *format;
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goto done;
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}
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format->code = fmt->format.code;
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format->width = clamp_t(unsigned int, fmt->format.width,
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RWPF_MIN_WIDTH, rwpf->max_width);
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format->height = clamp_t(unsigned int, fmt->format.height,
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RWPF_MIN_HEIGHT, rwpf->max_height);
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format->field = V4L2_FIELD_NONE;
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format->colorspace = V4L2_COLORSPACE_SRGB;
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fmt->format = *format;
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if (rwpf->entity.type == VSP1_ENTITY_RPF) {
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struct v4l2_rect *crop;
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/* Update the sink crop rectangle. */
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crop = vsp1_rwpf_get_crop(rwpf, config);
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crop->left = 0;
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crop->top = 0;
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crop->width = fmt->format.width;
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crop->height = fmt->format.height;
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}
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/* Propagate the format to the source pad. */
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format = vsp1_entity_get_pad_format(&rwpf->entity, config,
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RWPF_PAD_SOURCE);
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*format = fmt->format;
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if (rwpf->flip.rotate) {
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format->width = fmt->format.height;
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format->height = fmt->format.width;
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}
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done:
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mutex_unlock(&rwpf->entity.lock);
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return ret;
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}
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static int vsp1_rwpf_get_selection(struct v4l2_subdev *subdev,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_selection *sel)
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{
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struct vsp1_rwpf *rwpf = to_rwpf(subdev);
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struct v4l2_subdev_pad_config *config;
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struct v4l2_mbus_framefmt *format;
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int ret = 0;
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/*
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* Cropping is only supported on the RPF and is implemented on the sink
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* pad.
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*/
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if (rwpf->entity.type == VSP1_ENTITY_WPF || sel->pad != RWPF_PAD_SINK)
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return -EINVAL;
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mutex_lock(&rwpf->entity.lock);
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config = vsp1_entity_get_pad_config(&rwpf->entity, cfg, sel->which);
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if (!config) {
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ret = -EINVAL;
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goto done;
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}
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switch (sel->target) {
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case V4L2_SEL_TGT_CROP:
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sel->r = *vsp1_rwpf_get_crop(rwpf, config);
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break;
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case V4L2_SEL_TGT_CROP_BOUNDS:
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format = vsp1_entity_get_pad_format(&rwpf->entity, config,
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RWPF_PAD_SINK);
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sel->r.left = 0;
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sel->r.top = 0;
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sel->r.width = format->width;
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sel->r.height = format->height;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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done:
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mutex_unlock(&rwpf->entity.lock);
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return ret;
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}
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static int vsp1_rwpf_set_selection(struct v4l2_subdev *subdev,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_selection *sel)
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{
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struct vsp1_rwpf *rwpf = to_rwpf(subdev);
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struct v4l2_subdev_pad_config *config;
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struct v4l2_mbus_framefmt *format;
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struct v4l2_rect *crop;
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int ret = 0;
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/*
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* Cropping is only supported on the RPF and is implemented on the sink
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* pad.
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*/
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if (rwpf->entity.type == VSP1_ENTITY_WPF || sel->pad != RWPF_PAD_SINK)
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return -EINVAL;
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if (sel->target != V4L2_SEL_TGT_CROP)
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return -EINVAL;
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mutex_lock(&rwpf->entity.lock);
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config = vsp1_entity_get_pad_config(&rwpf->entity, cfg, sel->which);
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if (!config) {
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ret = -EINVAL;
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goto done;
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}
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/* Make sure the crop rectangle is entirely contained in the image. */
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format = vsp1_entity_get_pad_format(&rwpf->entity, config,
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RWPF_PAD_SINK);
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/*
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* Restrict the crop rectangle coordinates to multiples of 2 to avoid
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* shifting the color plane.
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*/
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if (format->code == MEDIA_BUS_FMT_AYUV8_1X32) {
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sel->r.left = ALIGN(sel->r.left, 2);
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sel->r.top = ALIGN(sel->r.top, 2);
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sel->r.width = round_down(sel->r.width, 2);
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sel->r.height = round_down(sel->r.height, 2);
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}
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sel->r.left = min_t(unsigned int, sel->r.left, format->width - 2);
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sel->r.top = min_t(unsigned int, sel->r.top, format->height - 2);
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sel->r.width = min_t(unsigned int, sel->r.width,
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format->width - sel->r.left);
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sel->r.height = min_t(unsigned int, sel->r.height,
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format->height - sel->r.top);
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crop = vsp1_rwpf_get_crop(rwpf, config);
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*crop = sel->r;
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/* Propagate the format to the source pad. */
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format = vsp1_entity_get_pad_format(&rwpf->entity, config,
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RWPF_PAD_SOURCE);
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format->width = crop->width;
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format->height = crop->height;
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done:
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mutex_unlock(&rwpf->entity.lock);
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return ret;
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}
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const struct v4l2_subdev_pad_ops vsp1_rwpf_pad_ops = {
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.init_cfg = vsp1_entity_init_cfg,
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.enum_mbus_code = vsp1_rwpf_enum_mbus_code,
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.enum_frame_size = vsp1_rwpf_enum_frame_size,
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.get_fmt = vsp1_subdev_get_pad_format,
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.set_fmt = vsp1_rwpf_set_format,
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.get_selection = vsp1_rwpf_get_selection,
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.set_selection = vsp1_rwpf_set_selection,
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};
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/* -----------------------------------------------------------------------------
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* Controls
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*/
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static int vsp1_rwpf_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct vsp1_rwpf *rwpf =
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container_of(ctrl->handler, struct vsp1_rwpf, ctrls);
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switch (ctrl->id) {
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case V4L2_CID_ALPHA_COMPONENT:
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rwpf->alpha = ctrl->val;
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break;
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}
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return 0;
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}
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static const struct v4l2_ctrl_ops vsp1_rwpf_ctrl_ops = {
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.s_ctrl = vsp1_rwpf_s_ctrl,
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};
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int vsp1_rwpf_init_ctrls(struct vsp1_rwpf *rwpf, unsigned int ncontrols)
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{
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v4l2_ctrl_handler_init(&rwpf->ctrls, ncontrols + 1);
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v4l2_ctrl_new_std(&rwpf->ctrls, &vsp1_rwpf_ctrl_ops,
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V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 255);
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rwpf->entity.subdev.ctrl_handler = &rwpf->ctrls;
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return rwpf->ctrls.error;
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}
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