| /* |
| * vsp1_entity.c -- R-Car VSP1 Base Entity |
| * |
| * Copyright (C) 2013-2014 Renesas Electronics Corporation |
| * |
| * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/gfp.h> |
| |
| #include <media/media-entity.h> |
| #include <media/v4l2-ctrls.h> |
| #include <media/v4l2-subdev.h> |
| |
| #include "vsp1.h" |
| #include "vsp1_entity.h" |
| #include "vsp1_video.h" |
| |
| bool vsp1_entity_is_streaming(struct vsp1_entity *entity) |
| { |
| bool streaming; |
| |
| mutex_lock(&entity->lock); |
| streaming = entity->streaming; |
| mutex_unlock(&entity->lock); |
| |
| return streaming; |
| } |
| |
| int vsp1_entity_set_streaming(struct vsp1_entity *entity, bool streaming) |
| { |
| int ret; |
| |
| mutex_lock(&entity->lock); |
| entity->streaming = streaming; |
| mutex_unlock(&entity->lock); |
| |
| if (!streaming) |
| return 0; |
| |
| if (!entity->subdev.ctrl_handler) |
| return 0; |
| |
| ret = v4l2_ctrl_handler_setup(entity->subdev.ctrl_handler); |
| if (ret < 0) { |
| mutex_lock(&entity->lock); |
| entity->streaming = false; |
| mutex_unlock(&entity->lock); |
| } |
| |
| return ret; |
| } |
| |
| /* ----------------------------------------------------------------------------- |
| * V4L2 Subdevice Operations |
| */ |
| |
| struct v4l2_mbus_framefmt * |
| vsp1_entity_get_pad_format(struct vsp1_entity *entity, |
| struct v4l2_subdev_pad_config *cfg, |
| unsigned int pad, u32 which) |
| { |
| switch (which) { |
| case V4L2_SUBDEV_FORMAT_TRY: |
| return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad); |
| case V4L2_SUBDEV_FORMAT_ACTIVE: |
| return &entity->formats[pad]; |
| default: |
| return NULL; |
| } |
| } |
| |
| /* |
| * vsp1_entity_init_formats - Initialize formats on all pads |
| * @subdev: V4L2 subdevice |
| * @cfg: V4L2 subdev pad configuration |
| * |
| * Initialize all pad formats with default values. If cfg is not NULL, try |
| * formats are initialized on the file handle. Otherwise active formats are |
| * initialized on the device. |
| */ |
| void vsp1_entity_init_formats(struct v4l2_subdev *subdev, |
| struct v4l2_subdev_pad_config *cfg) |
| { |
| struct v4l2_subdev_format format; |
| unsigned int pad; |
| |
| for (pad = 0; pad < subdev->entity.num_pads - 1; ++pad) { |
| memset(&format, 0, sizeof(format)); |
| |
| format.pad = pad; |
| format.which = cfg ? V4L2_SUBDEV_FORMAT_TRY |
| : V4L2_SUBDEV_FORMAT_ACTIVE; |
| |
| v4l2_subdev_call(subdev, pad, set_fmt, cfg, &format); |
| } |
| } |
| |
| static int vsp1_entity_open(struct v4l2_subdev *subdev, |
| struct v4l2_subdev_fh *fh) |
| { |
| vsp1_entity_init_formats(subdev, fh->pad); |
| |
| return 0; |
| } |
| |
| const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops = { |
| .open = vsp1_entity_open, |
| }; |
| |
| /* ----------------------------------------------------------------------------- |
| * Media Operations |
| */ |
| |
| static int vsp1_entity_link_setup(struct media_entity *entity, |
| const struct media_pad *local, |
| const struct media_pad *remote, u32 flags) |
| { |
| struct vsp1_entity *source; |
| |
| if (!(local->flags & MEDIA_PAD_FL_SOURCE)) |
| return 0; |
| |
| source = container_of(local->entity, struct vsp1_entity, subdev.entity); |
| |
| if (!source->route) |
| return 0; |
| |
| if (flags & MEDIA_LNK_FL_ENABLED) { |
| if (source->sink) |
| return -EBUSY; |
| source->sink = remote->entity; |
| source->sink_pad = remote->index; |
| } else { |
| source->sink = NULL; |
| source->sink_pad = 0; |
| } |
| |
| return 0; |
| } |
| |
| const struct media_entity_operations vsp1_media_ops = { |
| .link_setup = vsp1_entity_link_setup, |
| .link_validate = v4l2_subdev_link_validate, |
| }; |
| |
| /* ----------------------------------------------------------------------------- |
| * Initialization |
| */ |
| |
| static const struct vsp1_route vsp1_routes[] = { |
| { VSP1_ENTITY_BRU, 0, VI6_DPR_BRU_ROUTE, |
| { VI6_DPR_NODE_BRU_IN(0), VI6_DPR_NODE_BRU_IN(1), |
| VI6_DPR_NODE_BRU_IN(2), VI6_DPR_NODE_BRU_IN(3), } }, |
| { VSP1_ENTITY_HSI, 0, VI6_DPR_HSI_ROUTE, { VI6_DPR_NODE_HSI, } }, |
| { VSP1_ENTITY_HST, 0, VI6_DPR_HST_ROUTE, { VI6_DPR_NODE_HST, } }, |
| { VSP1_ENTITY_LIF, 0, 0, { VI6_DPR_NODE_LIF, } }, |
| { VSP1_ENTITY_LUT, 0, VI6_DPR_LUT_ROUTE, { VI6_DPR_NODE_LUT, } }, |
| { VSP1_ENTITY_RPF, 0, VI6_DPR_RPF_ROUTE(0), { VI6_DPR_NODE_RPF(0), } }, |
| { VSP1_ENTITY_RPF, 1, VI6_DPR_RPF_ROUTE(1), { VI6_DPR_NODE_RPF(1), } }, |
| { VSP1_ENTITY_RPF, 2, VI6_DPR_RPF_ROUTE(2), { VI6_DPR_NODE_RPF(2), } }, |
| { VSP1_ENTITY_RPF, 3, VI6_DPR_RPF_ROUTE(3), { VI6_DPR_NODE_RPF(3), } }, |
| { VSP1_ENTITY_RPF, 4, VI6_DPR_RPF_ROUTE(4), { VI6_DPR_NODE_RPF(4), } }, |
| { VSP1_ENTITY_SRU, 0, VI6_DPR_SRU_ROUTE, { VI6_DPR_NODE_SRU, } }, |
| { VSP1_ENTITY_UDS, 0, VI6_DPR_UDS_ROUTE(0), { VI6_DPR_NODE_UDS(0), } }, |
| { VSP1_ENTITY_UDS, 1, VI6_DPR_UDS_ROUTE(1), { VI6_DPR_NODE_UDS(1), } }, |
| { VSP1_ENTITY_UDS, 2, VI6_DPR_UDS_ROUTE(2), { VI6_DPR_NODE_UDS(2), } }, |
| { VSP1_ENTITY_WPF, 0, 0, { VI6_DPR_NODE_WPF(0), } }, |
| { VSP1_ENTITY_WPF, 1, 0, { VI6_DPR_NODE_WPF(1), } }, |
| { VSP1_ENTITY_WPF, 2, 0, { VI6_DPR_NODE_WPF(2), } }, |
| { VSP1_ENTITY_WPF, 3, 0, { VI6_DPR_NODE_WPF(3), } }, |
| }; |
| |
| int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, |
| unsigned int num_pads) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < ARRAY_SIZE(vsp1_routes); ++i) { |
| if (vsp1_routes[i].type == entity->type && |
| vsp1_routes[i].index == entity->index) { |
| entity->route = &vsp1_routes[i]; |
| break; |
| } |
| } |
| |
| if (i == ARRAY_SIZE(vsp1_routes)) |
| return -EINVAL; |
| |
| mutex_init(&entity->lock); |
| |
| entity->vsp1 = vsp1; |
| entity->source_pad = num_pads - 1; |
| |
| /* Allocate formats and pads. */ |
| entity->formats = devm_kzalloc(vsp1->dev, |
| num_pads * sizeof(*entity->formats), |
| GFP_KERNEL); |
| if (entity->formats == NULL) |
| return -ENOMEM; |
| |
| entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads), |
| GFP_KERNEL); |
| if (entity->pads == NULL) |
| return -ENOMEM; |
| |
| /* Initialize pads. */ |
| for (i = 0; i < num_pads - 1; ++i) |
| entity->pads[i].flags = MEDIA_PAD_FL_SINK; |
| |
| entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE; |
| |
| /* Initialize the media entity. */ |
| return media_entity_init(&entity->subdev.entity, num_pads, |
| entity->pads, 0); |
| } |
| |
| void vsp1_entity_destroy(struct vsp1_entity *entity) |
| { |
| if (entity->video) |
| vsp1_video_cleanup(entity->video); |
| if (entity->subdev.ctrl_handler) |
| v4l2_ctrl_handler_free(entity->subdev.ctrl_handler); |
| media_entity_cleanup(&entity->subdev.entity); |
| |
| mutex_destroy(&entity->lock); |
| } |