572 lines
16 KiB
C
572 lines
16 KiB
C
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/*
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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_dl.h"
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#include "vsp1_entity.h"
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#include "vsp1_pipe.h"
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#include "vsp1_rwpf.h"
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void vsp1_entity_route_setup(struct vsp1_entity *entity,
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struct vsp1_pipeline *pipe,
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struct vsp1_dl_list *dl)
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{
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struct vsp1_entity *source;
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u32 route;
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if (entity->type == VSP1_ENTITY_HGO) {
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u32 smppt;
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/*
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* The HGO is a special case, its routing is configured on the
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* sink pad.
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*/
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source = entity->sources[0];
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smppt = (pipe->output->entity.index << VI6_DPR_SMPPT_TGW_SHIFT)
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| (source->route->output << VI6_DPR_SMPPT_PT_SHIFT);
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vsp1_dl_list_write(dl, VI6_DPR_HGO_SMPPT, smppt);
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return;
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} else if (entity->type == VSP1_ENTITY_HGT) {
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u32 smppt;
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/*
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* The HGT is a special case, its routing is configured on the
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* sink pad.
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*/
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source = entity->sources[0];
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smppt = (pipe->output->entity.index << VI6_DPR_SMPPT_TGW_SHIFT)
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| (source->route->output << VI6_DPR_SMPPT_PT_SHIFT);
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vsp1_dl_list_write(dl, VI6_DPR_HGT_SMPPT, smppt);
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return;
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}
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source = entity;
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if (source->route->reg == 0)
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return;
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route = source->sink->route->inputs[source->sink_pad];
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/*
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* The ILV and BRS share the same data path route. The extra BRSSEL bit
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* selects between the ILV and BRS.
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*/
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if (source->type == VSP1_ENTITY_BRS)
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route |= VI6_DPR_ROUTE_BRSSEL;
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vsp1_dl_list_write(dl, source->route->reg, route);
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}
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/* -----------------------------------------------------------------------------
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* V4L2 Subdevice Operations
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*/
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/**
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* vsp1_entity_get_pad_config - Get the pad configuration for an entity
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* @entity: the entity
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* @cfg: the TRY pad configuration
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* @which: configuration selector (ACTIVE or TRY)
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*
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* When called with which set to V4L2_SUBDEV_FORMAT_ACTIVE the caller must hold
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* the entity lock to access the returned configuration.
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*
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* Return the pad configuration requested by the which argument. The TRY
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* configuration is passed explicitly to the function through the cfg argument
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* and simply returned when requested. The ACTIVE configuration comes from the
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* entity structure.
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*/
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struct v4l2_subdev_pad_config *
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vsp1_entity_get_pad_config(struct vsp1_entity *entity,
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struct v4l2_subdev_pad_config *cfg,
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enum v4l2_subdev_format_whence which)
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{
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switch (which) {
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case V4L2_SUBDEV_FORMAT_ACTIVE:
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return entity->config;
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case V4L2_SUBDEV_FORMAT_TRY:
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default:
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return cfg;
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}
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}
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/**
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* vsp1_entity_get_pad_format - Get a pad format from storage for an entity
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* @entity: the entity
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* @cfg: the configuration storage
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* @pad: the pad number
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*
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* Return the format stored in the given configuration for an entity's pad. The
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* configuration can be an ACTIVE or TRY configuration.
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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)
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{
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return v4l2_subdev_get_try_format(&entity->subdev, cfg, pad);
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}
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/**
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* vsp1_entity_get_pad_selection - Get a pad selection from storage for entity
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* @entity: the entity
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* @cfg: the configuration storage
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* @pad: the pad number
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* @target: the selection target
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*
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* Return the selection rectangle stored in the given configuration for an
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* entity's pad. The configuration can be an ACTIVE or TRY configuration. The
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* selection target can be COMPOSE or CROP.
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*/
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struct v4l2_rect *
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vsp1_entity_get_pad_selection(struct vsp1_entity *entity,
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struct v4l2_subdev_pad_config *cfg,
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unsigned int pad, unsigned int target)
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{
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switch (target) {
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case V4L2_SEL_TGT_COMPOSE:
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return v4l2_subdev_get_try_compose(&entity->subdev, cfg, pad);
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case V4L2_SEL_TGT_CROP:
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return v4l2_subdev_get_try_crop(&entity->subdev, cfg, 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_cfg - 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 in the given pad config. This
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* function can be used as a handler for the subdev pad::init_cfg operation.
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*/
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int vsp1_entity_init_cfg(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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return 0;
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}
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/*
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* vsp1_subdev_get_pad_format - Subdev pad get_fmt handler
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* @subdev: V4L2 subdevice
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* @cfg: V4L2 subdev pad configuration
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* @fmt: V4L2 subdev format
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*
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* This function implements the subdev get_fmt pad operation. It can be used as
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* a direct drop-in for the operation handler.
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*/
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int vsp1_subdev_get_pad_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_entity *entity = to_vsp1_entity(subdev);
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struct v4l2_subdev_pad_config *config;
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config = vsp1_entity_get_pad_config(entity, cfg, fmt->which);
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if (!config)
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return -EINVAL;
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mutex_lock(&entity->lock);
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fmt->format = *vsp1_entity_get_pad_format(entity, config, fmt->pad);
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mutex_unlock(&entity->lock);
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return 0;
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}
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/*
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* vsp1_subdev_enum_mbus_code - Subdev pad enum_mbus_code handler
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* @subdev: V4L2 subdevice
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* @cfg: V4L2 subdev pad configuration
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* @code: Media bus code enumeration
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* @codes: Array of supported media bus codes
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* @ncodes: Number of supported media bus codes
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*
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* This function implements the subdev enum_mbus_code pad operation for entities
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* that do not support format conversion. It enumerates the given supported
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* media bus codes on the sink pad and reports a source pad format identical to
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* the sink pad.
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*/
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int vsp1_subdev_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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const unsigned int *codes, unsigned int ncodes)
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{
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struct vsp1_entity *entity = to_vsp1_entity(subdev);
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if (code->pad == 0) {
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if (code->index >= ncodes)
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return -EINVAL;
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code->code = codes[code->index];
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} else {
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struct v4l2_subdev_pad_config *config;
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struct v4l2_mbus_framefmt *format;
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/*
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* The entity can't perform format conversion, the sink format
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* is always identical to the source format.
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*/
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if (code->index)
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return -EINVAL;
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config = vsp1_entity_get_pad_config(entity, cfg, code->which);
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if (!config)
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return -EINVAL;
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mutex_lock(&entity->lock);
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format = vsp1_entity_get_pad_format(entity, config, 0);
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code->code = format->code;
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mutex_unlock(&entity->lock);
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}
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return 0;
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}
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/*
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* vsp1_subdev_enum_frame_size - Subdev pad enum_frame_size handler
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* @subdev: V4L2 subdevice
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* @cfg: V4L2 subdev pad configuration
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* @fse: Frame size enumeration
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* @min_width: Minimum image width
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* @min_height: Minimum image height
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* @max_width: Maximum image width
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* @max_height: Maximum image height
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*
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* This function implements the subdev enum_frame_size pad operation for
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* entities that do not support scaling or cropping. It reports the given
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* minimum and maximum frame width and height on the sink pad, and a fixed
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* source pad size identical to the sink pad.
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*/
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int vsp1_subdev_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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unsigned int min_width, unsigned int min_height,
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unsigned int max_width, unsigned int max_height)
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{
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struct vsp1_entity *entity = to_vsp1_entity(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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config = vsp1_entity_get_pad_config(entity, cfg, fse->which);
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if (!config)
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return -EINVAL;
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format = vsp1_entity_get_pad_format(entity, config, fse->pad);
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mutex_lock(&entity->lock);
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if (fse->index || fse->code != format->code) {
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ret = -EINVAL;
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goto done;
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}
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if (fse->pad == 0) {
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fse->min_width = min_width;
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fse->max_width = max_width;
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fse->min_height = min_height;
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fse->max_height = max_height;
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} else {
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/*
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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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done:
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mutex_unlock(&entity->lock);
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return ret;
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}
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/* -----------------------------------------------------------------------------
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* Media Operations
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*/
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static inline struct vsp1_entity *
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media_entity_to_vsp1_entity(struct media_entity *entity)
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{
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return container_of(entity, struct vsp1_entity, subdev.entity);
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}
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static int vsp1_entity_link_setup_source(const struct media_pad *source_pad,
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const struct media_pad *sink_pad,
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u32 flags)
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{
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struct vsp1_entity *source;
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source = media_entity_to_vsp1_entity(source_pad->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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struct vsp1_entity *sink
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= media_entity_to_vsp1_entity(sink_pad->entity);
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/*
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* Fan-out is limited to one for the normal data path plus
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* optional HGO and HGT. We ignore the HGO and HGT here.
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*/
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if (sink->type != VSP1_ENTITY_HGO &&
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sink->type != VSP1_ENTITY_HGT) {
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if (source->sink)
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return -EBUSY;
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source->sink = sink;
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source->sink_pad = sink_pad->index;
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}
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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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static int vsp1_entity_link_setup_sink(const struct media_pad *source_pad,
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const struct media_pad *sink_pad,
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u32 flags)
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{
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struct vsp1_entity *sink;
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struct vsp1_entity *source;
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sink = media_entity_to_vsp1_entity(sink_pad->entity);
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source = media_entity_to_vsp1_entity(source_pad->entity);
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|
|
if (flags & MEDIA_LNK_FL_ENABLED) {
|
||
|
|
/* Fan-in is limited to one. */
|
||
|
|
if (sink->sources[sink_pad->index])
|
||
|
|
return -EBUSY;
|
||
|
|
|
||
|
|
sink->sources[sink_pad->index] = source;
|
||
|
|
} else {
|
||
|
|
sink->sources[sink_pad->index] = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int vsp1_entity_link_setup(struct media_entity *entity,
|
||
|
|
const struct media_pad *local,
|
||
|
|
const struct media_pad *remote, u32 flags)
|
||
|
|
{
|
||
|
|
if (local->flags & MEDIA_PAD_FL_SOURCE)
|
||
|
|
return vsp1_entity_link_setup_source(local, remote, flags);
|
||
|
|
else
|
||
|
|
return vsp1_entity_link_setup_sink(remote, local, flags);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* vsp1_entity_remote_pad - Find the pad at the remote end of a link
|
||
|
|
* @pad: Pad at the local end of the link
|
||
|
|
*
|
||
|
|
* Search for a remote pad connected to the given pad by iterating over all
|
||
|
|
* links originating or terminating at that pad until an enabled link is found.
|
||
|
|
*
|
||
|
|
* Our link setup implementation guarantees that the output fan-out will not be
|
||
|
|
* higher than one for the data pipelines, except for the links to the HGO and
|
||
|
|
* HGT that can be enabled in addition to a regular data link. When traversing
|
||
|
|
* outgoing links this function ignores HGO and HGT entities and should thus be
|
||
|
|
* used in place of the generic media_entity_remote_pad() function to traverse
|
||
|
|
* data pipelines.
|
||
|
|
*
|
||
|
|
* Return a pointer to the pad at the remote end of the first found enabled
|
||
|
|
* link, or NULL if no enabled link has been found.
|
||
|
|
*/
|
||
|
|
struct media_pad *vsp1_entity_remote_pad(struct media_pad *pad)
|
||
|
|
{
|
||
|
|
struct media_link *link;
|
||
|
|
|
||
|
|
list_for_each_entry(link, &pad->entity->links, list) {
|
||
|
|
struct vsp1_entity *entity;
|
||
|
|
|
||
|
|
if (!(link->flags & MEDIA_LNK_FL_ENABLED))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
/* If we're the sink the source will never be an HGO or HGT. */
|
||
|
|
if (link->sink == pad)
|
||
|
|
return link->source;
|
||
|
|
|
||
|
|
if (link->source != pad)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
/* If the sink isn't a subdevice it can't be an HGO or HGT. */
|
||
|
|
if (!is_media_entity_v4l2_subdev(link->sink->entity))
|
||
|
|
return link->sink;
|
||
|
|
|
||
|
|
entity = media_entity_to_vsp1_entity(link->sink->entity);
|
||
|
|
if (entity->type != VSP1_ENTITY_HGO &&
|
||
|
|
entity->type != VSP1_ENTITY_HGT)
|
||
|
|
return link->sink;
|
||
|
|
}
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------
|
||
|
|
* Initialization
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define VSP1_ENTITY_ROUTE(ent) \
|
||
|
|
{ VSP1_ENTITY_##ent, 0, VI6_DPR_##ent##_ROUTE, \
|
||
|
|
{ VI6_DPR_NODE_##ent }, VI6_DPR_NODE_##ent }
|
||
|
|
|
||
|
|
#define VSP1_ENTITY_ROUTE_RPF(idx) \
|
||
|
|
{ VSP1_ENTITY_RPF, idx, VI6_DPR_RPF_ROUTE(idx), \
|
||
|
|
{ 0, }, VI6_DPR_NODE_RPF(idx) }
|
||
|
|
|
||
|
|
#define VSP1_ENTITY_ROUTE_UDS(idx) \
|
||
|
|
{ VSP1_ENTITY_UDS, idx, VI6_DPR_UDS_ROUTE(idx), \
|
||
|
|
{ VI6_DPR_NODE_UDS(idx) }, VI6_DPR_NODE_UDS(idx) }
|
||
|
|
|
||
|
|
#define VSP1_ENTITY_ROUTE_WPF(idx) \
|
||
|
|
{ VSP1_ENTITY_WPF, idx, 0, \
|
||
|
|
{ VI6_DPR_NODE_WPF(idx) }, VI6_DPR_NODE_WPF(idx) }
|
||
|
|
|
||
|
|
static const struct vsp1_route vsp1_routes[] = {
|
||
|
|
{ VSP1_ENTITY_BRS, 0, VI6_DPR_ILV_BRS_ROUTE,
|
||
|
|
{ VI6_DPR_NODE_BRS_IN(0), VI6_DPR_NODE_BRS_IN(1) }, 0 },
|
||
|
|
{ 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),
|
||
|
|
VI6_DPR_NODE_BRU_IN(4) }, VI6_DPR_NODE_BRU_OUT },
|
||
|
|
VSP1_ENTITY_ROUTE(CLU),
|
||
|
|
{ VSP1_ENTITY_HGO, 0, 0, { 0, }, 0 },
|
||
|
|
{ VSP1_ENTITY_HGT, 0, 0, { 0, }, 0 },
|
||
|
|
VSP1_ENTITY_ROUTE(HSI),
|
||
|
|
VSP1_ENTITY_ROUTE(HST),
|
||
|
|
{ VSP1_ENTITY_LIF, 0, 0, { 0, }, 0 },
|
||
|
|
{ VSP1_ENTITY_LIF, 1, 0, { 0, }, 0 },
|
||
|
|
VSP1_ENTITY_ROUTE(LUT),
|
||
|
|
VSP1_ENTITY_ROUTE_RPF(0),
|
||
|
|
VSP1_ENTITY_ROUTE_RPF(1),
|
||
|
|
VSP1_ENTITY_ROUTE_RPF(2),
|
||
|
|
VSP1_ENTITY_ROUTE_RPF(3),
|
||
|
|
VSP1_ENTITY_ROUTE_RPF(4),
|
||
|
|
VSP1_ENTITY_ROUTE(SRU),
|
||
|
|
VSP1_ENTITY_ROUTE_UDS(0),
|
||
|
|
VSP1_ENTITY_ROUTE_UDS(1),
|
||
|
|
VSP1_ENTITY_ROUTE_UDS(2),
|
||
|
|
VSP1_ENTITY_ROUTE_WPF(0),
|
||
|
|
VSP1_ENTITY_ROUTE_WPF(1),
|
||
|
|
VSP1_ENTITY_ROUTE_WPF(2),
|
||
|
|
VSP1_ENTITY_ROUTE_WPF(3),
|
||
|
|
};
|
||
|
|
|
||
|
|
int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
|
||
|
|
const char *name, unsigned int num_pads,
|
||
|
|
const struct v4l2_subdev_ops *ops, u32 function)
|
||
|
|
{
|
||
|
|
struct v4l2_subdev *subdev;
|
||
|
|
unsigned int i;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
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 and initialize pads. */
|
||
|
|
entity->pads = devm_kzalloc(vsp1->dev, num_pads * sizeof(*entity->pads),
|
||
|
|
GFP_KERNEL);
|
||
|
|
if (entity->pads == NULL)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
for (i = 0; i < num_pads - 1; ++i)
|
||
|
|
entity->pads[i].flags = MEDIA_PAD_FL_SINK;
|
||
|
|
|
||
|
|
entity->sources = devm_kcalloc(vsp1->dev, max(num_pads - 1, 1U),
|
||
|
|
sizeof(*entity->sources), GFP_KERNEL);
|
||
|
|
if (entity->sources == NULL)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
/* Single-pad entities only have a sink. */
|
||
|
|
entity->pads[num_pads - 1].flags = num_pads > 1 ? MEDIA_PAD_FL_SOURCE
|
||
|
|
: MEDIA_PAD_FL_SINK;
|
||
|
|
|
||
|
|
/* Initialize the media entity. */
|
||
|
|
ret = media_entity_pads_init(&entity->subdev.entity, num_pads,
|
||
|
|
entity->pads);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
/* Initialize the V4L2 subdev. */
|
||
|
|
subdev = &entity->subdev;
|
||
|
|
v4l2_subdev_init(subdev, ops);
|
||
|
|
|
||
|
|
subdev->entity.function = function;
|
||
|
|
subdev->entity.ops = &vsp1->media_ops;
|
||
|
|
subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
||
|
|
|
||
|
|
snprintf(subdev->name, sizeof(subdev->name), "%s %s",
|
||
|
|
dev_name(vsp1->dev), name);
|
||
|
|
|
||
|
|
vsp1_entity_init_cfg(subdev, NULL);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Allocate the pad configuration to store formats and selection
|
||
|
|
* rectangles.
|
||
|
|
*/
|
||
|
|
entity->config = v4l2_subdev_alloc_pad_config(&entity->subdev);
|
||
|
|
if (entity->config == NULL) {
|
||
|
|
media_entity_cleanup(&entity->subdev.entity);
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void vsp1_entity_destroy(struct vsp1_entity *entity)
|
||
|
|
{
|
||
|
|
if (entity->ops && entity->ops->destroy)
|
||
|
|
entity->ops->destroy(entity);
|
||
|
|
if (entity->subdev.ctrl_handler)
|
||
|
|
v4l2_ctrl_handler_free(entity->subdev.ctrl_handler);
|
||
|
|
v4l2_subdev_free_pad_config(entity->config);
|
||
|
|
media_entity_cleanup(&entity->subdev.entity);
|
||
|
|
}
|