2013-06-04 08:22:30 -06:00
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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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2014-02-06 10:42:31 -07:00
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* Copyright (C) 2013-2014 Renesas Electronics Corporation
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2013-06-04 08:22:30 -06:00
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Pad Operations
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*/
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int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev,
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2015-03-04 02:47:54 -07:00
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struct v4l2_subdev_pad_config *cfg,
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2013-06-04 08:22:30 -06:00
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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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2014-11-10 10:28:31 -07:00
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MEDIA_BUS_FMT_ARGB8888_1X32,
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MEDIA_BUS_FMT_AYUV8_1X32,
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2013-06-04 08:22:30 -06:00
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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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int vsp1_rwpf_enum_frame_size(struct v4l2_subdev *subdev,
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2015-03-04 02:47:54 -07:00
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struct v4l2_subdev_pad_config *cfg,
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2013-06-04 08:22:30 -06:00
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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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struct v4l2_mbus_framefmt *format;
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2015-03-04 02:47:58 -07:00
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format = vsp1_entity_get_pad_format(&rwpf->entity, cfg, fse->pad,
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fse->which);
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2013-06-04 08:22:30 -06:00
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if (fse->index || fse->code != format->code)
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return -EINVAL;
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if (fse->pad == RWPF_PAD_SINK) {
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fse->min_width = RWPF_MIN_WIDTH;
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fse->max_width = rwpf->max_width;
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fse->min_height = RWPF_MIN_HEIGHT;
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fse->max_height = rwpf->max_height;
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} else {
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/* The size on the source pad are fixed and always identical to
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* the size on the sink pad.
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*/
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fse->min_width = format->width;
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fse->max_width = format->width;
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fse->min_height = format->height;
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fse->max_height = format->height;
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}
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return 0;
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}
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2013-08-24 17:49:58 -06:00
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static struct v4l2_rect *
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2015-03-04 02:47:54 -07:00
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vsp1_rwpf_get_crop(struct vsp1_rwpf *rwpf, struct v4l2_subdev_pad_config *cfg, u32 which)
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2013-08-24 17:49:58 -06:00
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{
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switch (which) {
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case V4L2_SUBDEV_FORMAT_TRY:
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2015-03-04 02:47:54 -07:00
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return v4l2_subdev_get_try_crop(&rwpf->entity.subdev, cfg, RWPF_PAD_SINK);
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2013-08-24 17:49:58 -06:00
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case V4L2_SUBDEV_FORMAT_ACTIVE:
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return &rwpf->crop;
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default:
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return NULL;
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}
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}
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2015-03-04 02:47:54 -07:00
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int vsp1_rwpf_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg,
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2013-06-04 08:22:30 -06:00
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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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2015-03-04 02:47:54 -07:00
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fmt->format = *vsp1_entity_get_pad_format(&rwpf->entity, cfg, fmt->pad,
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2013-06-04 08:22:30 -06:00
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fmt->which);
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return 0;
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}
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2015-03-04 02:47:54 -07:00
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int vsp1_rwpf_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg,
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2013-06-04 08:22:30 -06:00
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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_mbus_framefmt *format;
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2013-08-24 17:49:58 -06:00
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struct v4l2_rect *crop;
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2013-06-04 08:22:30 -06:00
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/* Default to YUV if the requested format is not supported. */
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2014-11-10 10:28:31 -07:00
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if (fmt->format.code != MEDIA_BUS_FMT_ARGB8888_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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2013-06-04 08:22:30 -06:00
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2015-03-04 02:47:54 -07:00
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format = vsp1_entity_get_pad_format(&rwpf->entity, cfg, fmt->pad,
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2013-06-04 08:22:30 -06:00
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fmt->which);
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if (fmt->pad == RWPF_PAD_SOURCE) {
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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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return 0;
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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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2013-08-24 17:49:58 -06:00
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/* Update the sink crop rectangle. */
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2015-03-04 02:47:54 -07:00
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crop = vsp1_rwpf_get_crop(rwpf, cfg, fmt->which);
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2013-08-24 17:49:58 -06:00
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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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2013-06-04 08:22:30 -06:00
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/* Propagate the format to the source pad. */
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2015-03-04 02:47:54 -07:00
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format = vsp1_entity_get_pad_format(&rwpf->entity, cfg, RWPF_PAD_SOURCE,
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2013-06-04 08:22:30 -06:00
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fmt->which);
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*format = fmt->format;
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return 0;
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}
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2013-08-24 17:49:58 -06:00
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int vsp1_rwpf_get_selection(struct v4l2_subdev *subdev,
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2015-03-04 02:47:54 -07:00
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struct v4l2_subdev_pad_config *cfg,
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2013-08-24 17:49:58 -06:00
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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_mbus_framefmt *format;
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/* Cropping is implemented on the sink pad. */
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if (sel->pad != RWPF_PAD_SINK)
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return -EINVAL;
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switch (sel->target) {
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case V4L2_SEL_TGT_CROP:
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2015-03-04 02:47:54 -07:00
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sel->r = *vsp1_rwpf_get_crop(rwpf, cfg, sel->which);
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2013-08-24 17:49:58 -06:00
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break;
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case V4L2_SEL_TGT_CROP_BOUNDS:
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2015-03-04 02:47:54 -07:00
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format = vsp1_entity_get_pad_format(&rwpf->entity, cfg,
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2013-08-24 17:49:58 -06:00
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RWPF_PAD_SINK, sel->which);
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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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return -EINVAL;
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}
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return 0;
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}
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int vsp1_rwpf_set_selection(struct v4l2_subdev *subdev,
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2015-03-04 02:47:54 -07:00
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struct v4l2_subdev_pad_config *cfg,
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2013-08-24 17:49:58 -06:00
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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_mbus_framefmt *format;
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struct v4l2_rect *crop;
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/* Cropping is implemented on the sink pad. */
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if (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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/* Make sure the crop rectangle is entirely contained in the image. The
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* WPF top and left offsets are limited to 255.
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*/
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2015-03-04 02:47:54 -07:00
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format = vsp1_entity_get_pad_format(&rwpf->entity, cfg, RWPF_PAD_SINK,
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2013-08-24 17:49:58 -06:00
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sel->which);
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2015-05-28 06:59:39 -06:00
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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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2013-08-24 17:49:58 -06:00
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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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if (rwpf->entity.type == VSP1_ENTITY_WPF) {
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sel->r.left = min_t(unsigned int, sel->r.left, 255);
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sel->r.top = min_t(unsigned int, sel->r.top, 255);
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}
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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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2015-03-04 02:47:54 -07:00
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crop = vsp1_rwpf_get_crop(rwpf, cfg, sel->which);
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2013-08-24 17:49:58 -06:00
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*crop = sel->r;
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/* Propagate the format to the source pad. */
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2015-03-04 02:47:54 -07:00
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format = vsp1_entity_get_pad_format(&rwpf->entity, cfg, RWPF_PAD_SOURCE,
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2013-08-24 17:49:58 -06:00
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sel->which);
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format->width = crop->width;
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format->height = crop->height;
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return 0;
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}
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2015-11-01 07:19:42 -07:00
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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)
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{
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rwpf->alpha = 255;
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v4l2_ctrl_handler_init(&rwpf->ctrls, 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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2015-11-01 08:48:11 -07:00
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/* -----------------------------------------------------------------------------
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* Buffers
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*/
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/**
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* vsp1_rwpf_set_memory - Configure DMA addresses for a [RW]PF
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* @rwpf: the [RW]PF instance
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* @mem: DMA memory addresses
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* @apply: whether to apply the configuration to the hardware
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*
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* This function stores the DMA addresses for all planes in the rwpf instance
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* and optionally applies the configuration to hardware registers if the apply
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* argument is set to true.
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*/
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void vsp1_rwpf_set_memory(struct vsp1_rwpf *rwpf, struct vsp1_rwpf_memory *mem,
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bool apply)
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{
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unsigned int i;
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for (i = 0; i < 3; ++i)
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rwpf->buf_addr[i] = mem->addr[i];
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if (apply)
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rwpf->ops->set_memory(rwpf);
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}
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