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283 lines
7.2 KiB
283 lines
7.2 KiB
// 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 ([email protected]) |
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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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