diff options
author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2013-06-16 23:01:02 +0400 |
---|---|---|
committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2013-08-10 01:17:46 +0400 |
commit | cb2025d2509ffab1c426509fd9de3d83e40398b9 (patch) | |
tree | f09c3a2637c1ec65774faf1af58ead1a3fda942e /drivers/gpu/drm/rcar-du/rcar_du_group.h | |
parent | 7fe99fda5f5c52a01b2c966aa68341a0b3d8ab33 (diff) | |
download | linux-cb2025d2509ffab1c426509fd9de3d83e40398b9.tar.xz |
drm/rcar-du: Introduce CRTCs groups
The R8A7779 DU is split in per-CRTC resources (scan-out engine, blending
unit, timings generator, ...) and device-global resources (start/stop
control, planes, ...) shared between the two CRTCs.
The R8A7790 introduced a third CRTC with its own set of global resources
This would be modeled as two separate DU device instances if it wasn't
for a handful or resources that are shared between the three CRTCs
(mostly related to input and output routing). For this reason the
R8A7790 DU must be modeled as a single device with three CRTCs, two sets
of "semi-global" resources, and a few device-global resources.
Introduce a new rcar_du_group driver-specific object, without any real
counterpart in the DU documentation, that models those semi-global
resources.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_group.h')
-rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_group.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.h b/drivers/gpu/drm/rcar-du/rcar_du_group.h new file mode 100644 index 000000000000..748331bbb8fe --- /dev/null +++ b/drivers/gpu/drm/rcar-du/rcar_du_group.h @@ -0,0 +1,47 @@ +/* + * rcar_du_group.c -- R-Car Display Unit Planes and CRTCs Group + * + * Copyright (C) 2013 Renesas 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. + */ + +#ifndef __RCAR_DU_GROUP_H__ +#define __RCAR_DU_GROUP_H__ + +#include "rcar_du_plane.h" + +struct rcar_du_device; + +/* + * struct rcar_du_group - CRTCs and planes group + * @dev: the DU device + * @mmio_offset: registers offset in the device memory map + * @index: group index + * @use_count: number of users of the group (rcar_du_group_(get|put)) + * @used_crtcs: number of CRTCs currently in use + * @planes: planes handled by the group + */ +struct rcar_du_group { + struct rcar_du_device *dev; + unsigned int mmio_offset; + unsigned int index; + + unsigned int use_count; + unsigned int used_crtcs; + + struct rcar_du_planes planes; +}; + +int rcar_du_group_get(struct rcar_du_group *rgrp); +void rcar_du_group_put(struct rcar_du_group *rgrp); +void rcar_du_group_start_stop(struct rcar_du_group *rgrp, bool start); +void rcar_du_group_restart(struct rcar_du_group *rgrp); + + +#endif /* __RCAR_DU_GROUP_H__ */ |