| /* |
| * rcar_du_crtc.h -- R-Car Display Unit CRTCs |
| * |
| * Copyright (C) 2013-2014 Renesas Electronics 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_CRTC_H__ |
| #define __RCAR_DU_CRTC_H__ |
| |
| #include <linux/mutex.h> |
| #include <linux/spinlock.h> |
| #include <linux/wait.h> |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc.h> |
| |
| struct rcar_du_group; |
| struct rcar_du_vsp; |
| |
| /** |
| * struct rcar_du_crtc - the CRTC, representing a DU superposition processor |
| * @crtc: base DRM CRTC |
| * @clock: the CRTC functional clock |
| * @extclock: external pixel dot clock (optional) |
| * @mmio_offset: offset of the CRTC registers in the DU MMIO block |
| * @index: CRTC software and hardware index |
| * @started: whether the CRTC has been started and is running |
| * @event: event to post when the pending page flip completes |
| * @flip_wait: wait queue used to signal page flip completion |
| * @vblank_lock: protects vblank_wait and vblank_count |
| * @vblank_wait: wait queue used to signal vertical blanking |
| * @vblank_count: number of vertical blanking interrupts to wait for |
| * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC |
| * @group: CRTC group this CRTC belongs to |
| */ |
| struct rcar_du_crtc { |
| struct drm_crtc crtc; |
| |
| struct clk *clock; |
| struct clk *extclock; |
| unsigned int mmio_offset; |
| unsigned int index; |
| bool started; |
| |
| struct drm_pending_vblank_event *event; |
| wait_queue_head_t flip_wait; |
| |
| spinlock_t vblank_lock; |
| wait_queue_head_t vblank_wait; |
| unsigned int vblank_count; |
| |
| unsigned int outputs; |
| |
| struct rcar_du_group *group; |
| struct rcar_du_vsp *vsp; |
| }; |
| |
| #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc) |
| |
| enum rcar_du_output { |
| RCAR_DU_OUTPUT_DPAD0, |
| RCAR_DU_OUTPUT_DPAD1, |
| RCAR_DU_OUTPUT_LVDS0, |
| RCAR_DU_OUTPUT_LVDS1, |
| RCAR_DU_OUTPUT_TCON, |
| RCAR_DU_OUTPUT_MAX, |
| }; |
| |
| int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index); |
| void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable); |
| void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc); |
| void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc); |
| |
| void rcar_du_crtc_route_output(struct drm_crtc *crtc, |
| enum rcar_du_output output); |
| |
| #endif /* __RCAR_DU_CRTC_H__ */ |
