1 /* 2 * rcar_du_crtc.h -- R-Car Display Unit CRTCs 3 * 4 * Copyright (C) 2013-2015 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/spinlock.h> 19 #include <linux/wait.h> 20 21 #include <drm/drmP.h> 22 #include <drm/drm_crtc.h> 23 24 struct rcar_du_group; 25 struct rcar_du_vsp; 26 27 /** 28 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor 29 * @crtc: base DRM CRTC 30 * @clock: the CRTC functional clock 31 * @extclock: external pixel dot clock (optional) 32 * @mmio_offset: offset of the CRTC registers in the DU MMIO block 33 * @index: CRTC software and hardware index 34 * @initialized: whether the CRTC has been initialized and clocks enabled 35 * @vblank_enable: whether vblank events are enabled on this CRTC 36 * @event: event to post when the pending page flip completes 37 * @flip_wait: wait queue used to signal page flip completion 38 * @vblank_lock: protects vblank_wait and vblank_count 39 * @vblank_wait: wait queue used to signal vertical blanking 40 * @vblank_count: number of vertical blanking interrupts to wait for 41 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC 42 * @group: CRTC group this CRTC belongs to 43 * @vsp: VSP feeding video to this CRTC 44 * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC 45 */ 46 struct rcar_du_crtc { 47 struct drm_crtc crtc; 48 49 struct clk *clock; 50 struct clk *extclock; 51 unsigned int mmio_offset; 52 unsigned int index; 53 bool initialized; 54 55 bool vblank_enable; 56 struct drm_pending_vblank_event *event; 57 wait_queue_head_t flip_wait; 58 59 spinlock_t vblank_lock; 60 wait_queue_head_t vblank_wait; 61 unsigned int vblank_count; 62 63 unsigned int outputs; 64 65 struct rcar_du_group *group; 66 struct rcar_du_vsp *vsp; 67 unsigned int vsp_pipe; 68 }; 69 70 #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc) 71 72 enum rcar_du_output { 73 RCAR_DU_OUTPUT_DPAD0, 74 RCAR_DU_OUTPUT_DPAD1, 75 RCAR_DU_OUTPUT_LVDS0, 76 RCAR_DU_OUTPUT_LVDS1, 77 RCAR_DU_OUTPUT_HDMI0, 78 RCAR_DU_OUTPUT_HDMI1, 79 RCAR_DU_OUTPUT_TCON, 80 RCAR_DU_OUTPUT_MAX, 81 }; 82 83 int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index); 84 void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc); 85 void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc); 86 87 void rcar_du_crtc_route_output(struct drm_crtc *crtc, 88 enum rcar_du_output output); 89 void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc); 90 91 #endif /* __RCAR_DU_CRTC_H__ */ 92