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bce9936a0d
Document the structure fields using kerneldoc. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/*
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* rcar_du_crtc.h -- R-Car Display Unit CRTCs
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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_CRTC_H__
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#define __RCAR_DU_CRTC_H__
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#include <linux/mutex.h>
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#include <linux/wait.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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struct rcar_du_group;
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/**
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* struct rcar_du_crtc - the CRTC, representing a DU superposition processor
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* @crtc: base DRM CRTC
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* @clock: the CRTC functional clock
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* @extclock: external pixel dot clock (optional)
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* @mmio_offset: offset of the CRTC registers in the DU MMIO block
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* @index: CRTC software and hardware index
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* @started: whether the CRTC has been started and is running
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* @event: event to post when the pending page flip completes
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* @flip_wait: wait queue used to signal page flip completion
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* @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
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* @enabled: whether the CRTC is enabled, used to control system resume
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* @group: CRTC group this CRTC belongs to
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*/
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struct rcar_du_crtc {
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struct drm_crtc crtc;
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struct clk *clock;
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struct clk *extclock;
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unsigned int mmio_offset;
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unsigned int index;
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bool started;
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struct drm_pending_vblank_event *event;
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wait_queue_head_t flip_wait;
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unsigned int outputs;
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bool enabled;
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struct rcar_du_group *group;
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};
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#define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc)
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enum rcar_du_output {
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RCAR_DU_OUTPUT_DPAD0,
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RCAR_DU_OUTPUT_DPAD1,
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RCAR_DU_OUTPUT_LVDS0,
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RCAR_DU_OUTPUT_LVDS1,
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RCAR_DU_OUTPUT_TCON,
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RCAR_DU_OUTPUT_MAX,
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};
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int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index);
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void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable);
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void rcar_du_crtc_cancel_page_flip(struct rcar_du_crtc *rcrtc,
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struct drm_file *file);
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void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
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void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
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void rcar_du_crtc_route_output(struct drm_crtc *crtc,
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enum rcar_du_output output);
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#endif /* __RCAR_DU_CRTC_H__ */
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