1 /* 2 * rcar_du_crtc.h -- R-Car Display Unit CRTCs 3 * 4 * Copyright (C) 2013-2014 Renesas Electronics Corporation 5 * 6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 */ 13 14 #ifndef __RCAR_DU_CRTC_H__ 15 #define __RCAR_DU_CRTC_H__ 16 17 #include <linux/mutex.h> 18 #include <linux/wait.h> 19 20 #include <drm/drmP.h> 21 #include <drm/drm_crtc.h> 22 23 struct rcar_du_group; 24 25 /** 26 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor 27 * @crtc: base DRM CRTC 28 * @clock: the CRTC functional clock 29 * @extclock: external pixel dot clock (optional) 30 * @mmio_offset: offset of the CRTC registers in the DU MMIO block 31 * @index: CRTC software and hardware index 32 * @started: whether the CRTC has been started and is running 33 * @event: event to post when the pending page flip completes 34 * @flip_wait: wait queue used to signal page flip completion 35 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC 36 * @enabled: whether the CRTC is enabled, used to control system resume 37 * @group: CRTC group this CRTC belongs to 38 */ 39 struct rcar_du_crtc { 40 struct drm_crtc crtc; 41 42 struct clk *clock; 43 struct clk *extclock; 44 unsigned int mmio_offset; 45 unsigned int index; 46 bool started; 47 48 struct drm_pending_vblank_event *event; 49 wait_queue_head_t flip_wait; 50 51 unsigned int outputs; 52 bool enabled; 53 54 struct rcar_du_group *group; 55 }; 56 57 #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc) 58 59 enum rcar_du_output { 60 RCAR_DU_OUTPUT_DPAD0, 61 RCAR_DU_OUTPUT_DPAD1, 62 RCAR_DU_OUTPUT_LVDS0, 63 RCAR_DU_OUTPUT_LVDS1, 64 RCAR_DU_OUTPUT_TCON, 65 RCAR_DU_OUTPUT_MAX, 66 }; 67 68 int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index); 69 void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable); 70 void rcar_du_crtc_cancel_page_flip(struct rcar_du_crtc *rcrtc, 71 struct drm_file *file); 72 void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc); 73 void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc); 74 75 void rcar_du_crtc_route_output(struct drm_crtc *crtc, 76 enum rcar_du_output output); 77 78 #endif /* __RCAR_DU_CRTC_H__ */ 79