234 lines
6.3 KiB
C
234 lines
6.3 KiB
C
/*
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* vsp1_entity.c -- R-Car VSP1 Base Entity
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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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* 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 <linux/gfp.h>
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#include <media/media-entity.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-subdev.h>
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#include "vsp1.h"
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#include "vsp1_entity.h"
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#include "vsp1_video.h"
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bool vsp1_entity_is_streaming(struct vsp1_entity *entity)
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{
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unsigned long flags;
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bool streaming;
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spin_lock_irqsave(&entity->lock, flags);
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streaming = entity->streaming;
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spin_unlock_irqrestore(&entity->lock, flags);
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return streaming;
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}
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int vsp1_entity_set_streaming(struct vsp1_entity *entity, bool streaming)
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{
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&entity->lock, flags);
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entity->streaming = streaming;
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spin_unlock_irqrestore(&entity->lock, flags);
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if (!streaming)
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return 0;
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if (!entity->subdev.ctrl_handler)
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return 0;
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ret = v4l2_ctrl_handler_setup(entity->subdev.ctrl_handler);
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if (ret < 0) {
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spin_lock_irqsave(&entity->lock, flags);
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entity->streaming = false;
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spin_unlock_irqrestore(&entity->lock, flags);
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}
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return ret;
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Operations
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*/
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struct v4l2_mbus_framefmt *
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vsp1_entity_get_pad_format(struct vsp1_entity *entity,
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struct v4l2_subdev_pad_config *cfg,
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unsigned int pad, u32 which)
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{
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switch (which) {
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case V4L2_SUBDEV_FORMAT_TRY:
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return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad);
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case V4L2_SUBDEV_FORMAT_ACTIVE:
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return &entity->formats[pad];
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default:
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return NULL;
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}
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}
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/*
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* vsp1_entity_init_formats - Initialize formats on all pads
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* @subdev: V4L2 subdevice
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* @cfg: V4L2 subdev pad configuration
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*
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* Initialize all pad formats with default values. If cfg is not NULL, try
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* formats are initialized on the file handle. Otherwise active formats are
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* initialized on the device.
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*/
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void vsp1_entity_init_formats(struct v4l2_subdev *subdev,
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struct v4l2_subdev_pad_config *cfg)
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{
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struct v4l2_subdev_format format;
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unsigned int pad;
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for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) {
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memset(&format, 0, sizeof(format));
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format.pad = pad;
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format.which = cfg ? V4L2_SUBDEV_FORMAT_TRY
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: V4L2_SUBDEV_FORMAT_ACTIVE;
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v4l2_subdev_call(subdev, pad, set_fmt, cfg, &format);
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}
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}
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static int vsp1_entity_open(struct v4l2_subdev *subdev,
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struct v4l2_subdev_fh *fh)
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{
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vsp1_entity_init_formats(subdev, fh->pad);
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return 0;
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}
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const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops = {
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.open = vsp1_entity_open,
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};
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/* -----------------------------------------------------------------------------
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* Media Operations
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*/
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static int vsp1_entity_link_setup(struct media_entity *entity,
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const struct media_pad *local,
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const struct media_pad *remote, u32 flags)
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{
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struct vsp1_entity *source;
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if (!(local->flags & MEDIA_PAD_FL_SOURCE))
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return 0;
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source = container_of(local->entity, struct vsp1_entity, subdev.entity);
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if (!source->route)
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return 0;
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if (flags & MEDIA_LNK_FL_ENABLED) {
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if (source->sink)
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return -EBUSY;
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source->sink = remote->entity;
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source->sink_pad = remote->index;
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} else {
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source->sink = NULL;
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source->sink_pad = 0;
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}
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return 0;
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}
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const struct media_entity_operations vsp1_media_ops = {
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.link_setup = vsp1_entity_link_setup,
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.link_validate = v4l2_subdev_link_validate,
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};
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/* -----------------------------------------------------------------------------
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* Initialization
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*/
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static const struct vsp1_route vsp1_routes[] = {
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{ VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE,
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{ VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1),
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VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3), } },
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{ VSP1_ENTITY_HSI, 0, VI6_DPR_HSI_ROUTE, { VI6_DPR_NODE_HSI, } },
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{ VSP1_ENTITY_HST, 0, VI6_DPR_HST_ROUTE, { VI6_DPR_NODE_HST, } },
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{ VSP1_ENTITY_LIF, 0, 0, { VI6_DPR_NODE_LIF, } },
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{ VSP1_ENTITY_LUT, 0, VI6_DPR_LUT_ROUTE, { VI6_DPR_NODE_LUT, } },
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{ VSP1_ENTITY_RPF, 0, VI6_DPR_RPF_ROUTE(0), { VI6_DPR_NODE_RPF(0), } },
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{ VSP1_ENTITY_RPF, 1, VI6_DPR_RPF_ROUTE(1), { VI6_DPR_NODE_RPF(1), } },
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{ VSP1_ENTITY_RPF, 2, VI6_DPR_RPF_ROUTE(2), { VI6_DPR_NODE_RPF(2), } },
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{ VSP1_ENTITY_RPF, 3, VI6_DPR_RPF_ROUTE(3), { VI6_DPR_NODE_RPF(3), } },
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{ VSP1_ENTITY_RPF, 4, VI6_DPR_RPF_ROUTE(4), { VI6_DPR_NODE_RPF(4), } },
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{ VSP1_ENTITY_SRU, 0, VI6_DPR_SRU_ROUTE, { VI6_DPR_NODE_SRU, } },
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{ VSP1_ENTITY_UDS, 0, VI6_DPR_UDS_ROUTE(0), { VI6_DPR_NODE_UDS(0), } },
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{ VSP1_ENTITY_UDS, 1, VI6_DPR_UDS_ROUTE(1), { VI6_DPR_NODE_UDS(1), } },
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{ VSP1_ENTITY_UDS, 2, VI6_DPR_UDS_ROUTE(2), { VI6_DPR_NODE_UDS(2), } },
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{ VSP1_ENTITY_WPF, 0, 0, { VI6_DPR_NODE_WPF(0), } },
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{ VSP1_ENTITY_WPF, 1, 0, { VI6_DPR_NODE_WPF(1), } },
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{ VSP1_ENTITY_WPF, 2, 0, { VI6_DPR_NODE_WPF(2), } },
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{ VSP1_ENTITY_WPF, 3, 0, { VI6_DPR_NODE_WPF(3), } },
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};
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int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
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unsigned int num_pads)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) {
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if (vsp1_routes[i].type == entity->type &&
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vsp1_routes[i].index == entity->index) {
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entity->route = &vsp1_routes[i];
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break;
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}
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}
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if (i == ARRAY_SIZE(vsp1_routes))
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return -EINVAL;
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spin_lock_init(&entity->lock);
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entity->vsp1 = vsp1;
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entity->source_pad = num_pads - 1;
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/* Allocate formats and pads. */
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entity->formats = devm_kzalloc(vsp1->dev,
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num_pads * sizeof(*entity->formats),
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GFP_KERNEL);
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if (entity->formats == NULL)
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return -ENOMEM;
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entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads),
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GFP_KERNEL);
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if (entity->pads == NULL)
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return -ENOMEM;
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/* Initialize pads. */
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for (i = 0; i < num_pads - 1; ++i)
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entity->pads[i].flags = MEDIA_PAD_FL_SINK;
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entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE;
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/* Initialize the media entity. */
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return media_entity_init(&entity->subdev.entity, num_pads,
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entity->pads, 0);
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}
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void vsp1_entity_destroy(struct vsp1_entity *entity)
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{
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if (entity->video)
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vsp1_video_cleanup(entity->video);
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if (entity->subdev.ctrl_handler)
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v4l2_ctrl_handler_free(entity->subdev.ctrl_handler);
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media_entity_cleanup(&entity->subdev.entity);
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}
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