234 lines
6.1 KiB
C
234 lines
6.1 KiB
C
/*
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* vsp1_wpf.c -- R-Car VSP1 Write Pixel Formatter
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*
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* Copyright (C) 2013 Renesas Corporation
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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 <linux/device.h>
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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 WPF_MAX_WIDTH 2048
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#define WPF_MAX_HEIGHT 2048
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/* -----------------------------------------------------------------------------
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* Device Access
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*/
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static inline u32 vsp1_wpf_read(struct vsp1_rwpf *wpf, u32 reg)
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{
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return vsp1_read(wpf->entity.vsp1,
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reg + wpf->entity.index * VI6_WPF_OFFSET);
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}
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static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf, u32 reg, u32 data)
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{
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vsp1_write(wpf->entity.vsp1,
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reg + wpf->entity.index * VI6_WPF_OFFSET, data);
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Core Operations
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*/
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static int wpf_s_stream(struct v4l2_subdev *subdev, int enable)
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{
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struct vsp1_rwpf *wpf = to_rwpf(subdev);
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struct vsp1_pipeline *pipe =
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to_vsp1_pipeline(&wpf->entity.subdev.entity);
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struct vsp1_device *vsp1 = wpf->entity.vsp1;
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const struct v4l2_mbus_framefmt *format =
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&wpf->entity.formats[RWPF_PAD_SOURCE];
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unsigned int i;
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u32 srcrpf = 0;
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u32 outfmt = 0;
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if (!enable) {
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vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0);
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return 0;
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}
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/* Sources */
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for (i = 0; i < pipe->num_inputs; ++i) {
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struct vsp1_rwpf *input = pipe->inputs[i];
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srcrpf |= VI6_WPF_SRCRPF_RPF_ACT_MST(input->entity.index);
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}
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vsp1_wpf_write(wpf, VI6_WPF_SRCRPF, srcrpf);
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/* Destination stride. Cropping isn't supported yet. */
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if (!pipe->lif) {
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struct v4l2_pix_format_mplane *format = &wpf->video.format;
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vsp1_wpf_write(wpf, VI6_WPF_DSTM_STRIDE_Y,
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format->plane_fmt[0].bytesperline);
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if (format->num_planes > 1)
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vsp1_wpf_write(wpf, VI6_WPF_DSTM_STRIDE_C,
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format->plane_fmt[1].bytesperline);
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}
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vsp1_wpf_write(wpf, VI6_WPF_HSZCLIP,
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format->width << VI6_WPF_SZCLIP_SIZE_SHIFT);
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vsp1_wpf_write(wpf, VI6_WPF_VSZCLIP,
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format->height << VI6_WPF_SZCLIP_SIZE_SHIFT);
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/* Format */
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if (!pipe->lif) {
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const struct vsp1_format_info *fmtinfo = wpf->video.fmtinfo;
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outfmt = fmtinfo->hwfmt << VI6_WPF_OUTFMT_WRFMT_SHIFT;
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if (fmtinfo->swap_yc)
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outfmt |= VI6_WPF_OUTFMT_SPYCS;
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if (fmtinfo->swap_uv)
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outfmt |= VI6_WPF_OUTFMT_SPUVS;
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vsp1_wpf_write(wpf, VI6_WPF_DSWAP, fmtinfo->swap);
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}
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if (wpf->entity.formats[RWPF_PAD_SINK].code !=
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wpf->entity.formats[RWPF_PAD_SOURCE].code)
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outfmt |= VI6_WPF_OUTFMT_CSC;
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vsp1_wpf_write(wpf, VI6_WPF_OUTFMT, outfmt);
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vsp1_write(vsp1, VI6_DPR_WPF_FPORCH(wpf->entity.index),
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VI6_DPR_WPF_FPORCH_FP_WPFN);
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vsp1_write(vsp1, VI6_WPF_WRBCK_CTRL, 0);
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/* Enable interrupts */
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vsp1_write(vsp1, VI6_WPF_IRQ_STA(wpf->entity.index), 0);
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vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index),
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VI6_WFP_IRQ_ENB_FREE);
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return 0;
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Operations
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*/
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static struct v4l2_subdev_video_ops wpf_video_ops = {
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.s_stream = wpf_s_stream,
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};
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static struct v4l2_subdev_pad_ops wpf_pad_ops = {
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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_rwpf_get_format,
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.set_fmt = vsp1_rwpf_set_format,
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};
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static struct v4l2_subdev_ops wpf_ops = {
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.video = &wpf_video_ops,
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.pad = &wpf_pad_ops,
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};
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/* -----------------------------------------------------------------------------
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* Video Device Operations
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*/
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static void wpf_vdev_queue(struct vsp1_video *video,
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struct vsp1_video_buffer *buf)
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{
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struct vsp1_rwpf *wpf = container_of(video, struct vsp1_rwpf, video);
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vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_Y, buf->addr[0]);
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if (buf->buf.num_planes > 1)
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vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_C0, buf->addr[1]);
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if (buf->buf.num_planes > 2)
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vsp1_wpf_write(wpf, VI6_WPF_DSTM_ADDR_C1, buf->addr[2]);
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}
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static const struct vsp1_video_operations wpf_vdev_ops = {
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.queue = wpf_vdev_queue,
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};
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/* -----------------------------------------------------------------------------
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* Initialization and Cleanup
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*/
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struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index)
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{
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struct v4l2_subdev *subdev;
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struct vsp1_video *video;
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struct vsp1_rwpf *wpf;
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unsigned int flags;
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int ret;
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wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL);
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if (wpf == NULL)
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return ERR_PTR(-ENOMEM);
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wpf->max_width = WPF_MAX_WIDTH;
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wpf->max_height = WPF_MAX_HEIGHT;
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wpf->entity.type = VSP1_ENTITY_WPF;
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wpf->entity.index = index;
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wpf->entity.id = VI6_DPR_NODE_WPF(index);
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ret = vsp1_entity_init(vsp1, &wpf->entity, 2);
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if (ret < 0)
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return ERR_PTR(ret);
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/* Initialize the V4L2 subdev. */
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subdev = &wpf->entity.subdev;
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v4l2_subdev_init(subdev, &wpf_ops);
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subdev->entity.ops = &vsp1_media_ops;
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subdev->internal_ops = &vsp1_subdev_internal_ops;
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snprintf(subdev->name, sizeof(subdev->name), "%s wpf.%u",
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dev_name(vsp1->dev), index);
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v4l2_set_subdevdata(subdev, wpf);
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subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
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vsp1_entity_init_formats(subdev, NULL);
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/* Initialize the video device. */
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video = &wpf->video;
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video->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
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video->vsp1 = vsp1;
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video->ops = &wpf_vdev_ops;
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ret = vsp1_video_init(video, &wpf->entity);
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if (ret < 0)
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goto error_video;
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/* Connect the video device to the WPF. All connections are immutable
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* except for the WPF0 source link if a LIF is present.
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*/
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flags = MEDIA_LNK_FL_ENABLED;
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if (!(vsp1->pdata->features & VSP1_HAS_LIF) || index != 0)
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flags |= MEDIA_LNK_FL_IMMUTABLE;
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ret = media_entity_create_link(&wpf->entity.subdev.entity,
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RWPF_PAD_SOURCE,
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&wpf->video.video.entity, 0, flags);
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if (ret < 0)
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goto error_link;
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wpf->entity.sink = &wpf->video.video.entity;
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return wpf;
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error_link:
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vsp1_video_cleanup(video);
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error_video:
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media_entity_cleanup(&wpf->entity.subdev.entity);
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return ERR_PTR(ret);
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}
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