2af0394409
Plane sources are configured by the VSPS bit in the PnDDCR4 register. Although the datasheet states that the bit is updated during vertical blanking, it seems that updates only occur when the DU group is held in reset through the DSYSR.DRES bit. Restart the group if the source changes. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
66 lines
2 KiB
C
66 lines
2 KiB
C
/*
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* rcar_du_group.c -- R-Car Display Unit Planes and CRTCs Group
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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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#ifndef __RCAR_DU_GROUP_H__
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#define __RCAR_DU_GROUP_H__
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#include <linux/mutex.h>
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#include "rcar_du_plane.h"
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struct rcar_du_device;
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/*
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* struct rcar_du_group - CRTCs and planes group
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* @dev: the DU device
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* @mmio_offset: registers offset in the device memory map
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* @index: group index
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* @num_crtcs: number of CRTCs in this group (1 or 2)
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* @use_count: number of users of the group (rcar_du_group_(get|put))
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* @used_crtcs: number of CRTCs currently in use
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* @lock: protects the dptsr_planes field and the DPTSR register
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* @dptsr_planes: bitmask of planes driven by dot-clock and timing generator 1
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* @num_planes: number of planes in the group
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* @planes: planes handled by the group
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* @need_restart: the group needs to be restarted due to a configuration change
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*/
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struct rcar_du_group {
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struct rcar_du_device *dev;
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unsigned int mmio_offset;
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unsigned int index;
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unsigned int num_crtcs;
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unsigned int use_count;
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unsigned int used_crtcs;
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struct mutex lock;
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unsigned int dptsr_planes;
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unsigned int num_planes;
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struct rcar_du_plane planes[RCAR_DU_NUM_KMS_PLANES];
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bool need_restart;
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};
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u32 rcar_du_group_read(struct rcar_du_group *rgrp, u32 reg);
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void rcar_du_group_write(struct rcar_du_group *rgrp, u32 reg, u32 data);
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int rcar_du_group_get(struct rcar_du_group *rgrp);
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void rcar_du_group_put(struct rcar_du_group *rgrp);
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void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start);
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void rcar_du_group_restart(struct rcar_du_group *rgrp);
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int rcar_du_group_set_routing(struct rcar_du_group *rgrp);
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int rcar_du_set_dpad0_vsp1_routing(struct rcar_du_device *rcdu);
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#endif /* __RCAR_DU_GROUP_H__ */
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