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33025a5c66
The DISCOM calculates a CRC on a configurable window of the frame. It interfaces to the VSP through the UIF glue, hence the name used in the code. The module supports configuration of the CRC window through the crop rectangle on the sink pad of the corresponding entity. However, unlike the traditional V4L2 subdevice model, the crop rectangle does not influence the format on the source pad. Modeling the DISCOM as a sink-only entity would allow adhering to the V4L2 subdevice model at the expense of more complex code in the driver, as at the hardware level the UIF is handled as a sink+source entity. As the DISCOM is only present in R-Car Gen3 VSP-D and VSP-DL instances it is not exposed to userspace through V4L2 but controlled through the DU driver. We can thus change this model later if needed without fear of affecting userspace. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
121 lines
2.5 KiB
C
121 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* vsp1.h -- R-Car VSP1 Driver
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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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#ifndef __VSP1_H__
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#define __VSP1_H__
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#include <linux/io.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <media/media-device.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-subdev.h>
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#include "vsp1_regs.h"
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struct clk;
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struct device;
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struct rcar_fcp_device;
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struct vsp1_drm;
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struct vsp1_entity;
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struct vsp1_platform_data;
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struct vsp1_brx;
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struct vsp1_clu;
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struct vsp1_hgo;
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struct vsp1_hgt;
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struct vsp1_hsit;
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struct vsp1_lif;
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struct vsp1_lut;
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struct vsp1_rwpf;
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struct vsp1_sru;
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struct vsp1_uds;
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struct vsp1_uif;
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#define VSP1_MAX_LIF 2
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#define VSP1_MAX_RPF 5
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#define VSP1_MAX_UDS 3
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#define VSP1_MAX_UIF 2
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#define VSP1_MAX_WPF 4
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#define VSP1_HAS_LUT (1 << 1)
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#define VSP1_HAS_SRU (1 << 2)
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#define VSP1_HAS_BRU (1 << 3)
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#define VSP1_HAS_CLU (1 << 4)
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#define VSP1_HAS_WPF_VFLIP (1 << 5)
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#define VSP1_HAS_WPF_HFLIP (1 << 6)
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#define VSP1_HAS_HGO (1 << 7)
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#define VSP1_HAS_HGT (1 << 8)
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#define VSP1_HAS_BRS (1 << 9)
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struct vsp1_device_info {
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u32 version;
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const char *model;
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unsigned int gen;
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unsigned int features;
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unsigned int lif_count;
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unsigned int rpf_count;
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unsigned int uds_count;
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unsigned int uif_count;
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unsigned int wpf_count;
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unsigned int num_bru_inputs;
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bool uapi;
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};
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struct vsp1_device {
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struct device *dev;
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const struct vsp1_device_info *info;
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u32 version;
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void __iomem *mmio;
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struct rcar_fcp_device *fcp;
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struct device *bus_master;
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struct vsp1_brx *brs;
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struct vsp1_brx *bru;
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struct vsp1_clu *clu;
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struct vsp1_hgo *hgo;
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struct vsp1_hgt *hgt;
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struct vsp1_hsit *hsi;
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struct vsp1_hsit *hst;
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struct vsp1_lif *lif[VSP1_MAX_LIF];
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struct vsp1_lut *lut;
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struct vsp1_rwpf *rpf[VSP1_MAX_RPF];
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struct vsp1_sru *sru;
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struct vsp1_uds *uds[VSP1_MAX_UDS];
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struct vsp1_uif *uif[VSP1_MAX_UIF];
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struct vsp1_rwpf *wpf[VSP1_MAX_WPF];
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struct list_head entities;
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struct list_head videos;
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struct v4l2_device v4l2_dev;
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struct media_device media_dev;
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struct media_entity_operations media_ops;
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struct vsp1_drm *drm;
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};
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int vsp1_device_get(struct vsp1_device *vsp1);
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void vsp1_device_put(struct vsp1_device *vsp1);
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int vsp1_reset_wpf(struct vsp1_device *vsp1, unsigned int index);
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static inline u32 vsp1_read(struct vsp1_device *vsp1, u32 reg)
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{
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return ioread32(vsp1->mmio + reg);
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}
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static inline void vsp1_write(struct vsp1_device *vsp1, u32 reg, u32 data)
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{
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iowrite32(data, vsp1->mmio + reg);
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}
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#endif /* __VSP1_H__ */
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