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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6ea22ab4a0
The atomic framework guarantees that the CRTC enable and disable functions will only be called when needed, there's no need to duplicate the CRTC state check. By replacing the local CRTC enabled state check at resume time with the CRTC active state we can remove the local CRTC enabled state altogether. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
75 lines
2.1 KiB
C
75 lines
2.1 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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* @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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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_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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