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 #include <media/vsp1.h> 25 26 struct rcar_du_group; 27 struct rcar_du_vsp; 28 29 /** 30 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor 31 * @crtc: base DRM CRTC 32 * @clock: the CRTC functional clock 33 * @extclock: external pixel dot clock (optional) 34 * @mmio_offset: offset of the CRTC registers in the DU MMIO block 35 * @index: CRTC software and hardware index 36 * @initialized: whether the CRTC has been initialized and clocks enabled 37 * @vblank_enable: whether vblank events are enabled on this CRTC 38 * @event: event to post when the pending page flip completes 39 * @flip_wait: wait queue used to signal page flip completion 40 * @vblank_lock: protects vblank_wait and vblank_count 41 * @vblank_wait: wait queue used to signal vertical blanking 42 * @vblank_count: number of vertical blanking interrupts to wait for 43 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC 44 * @group: CRTC group this CRTC belongs to 45 * @vsp: VSP feeding video to this CRTC 46 * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC 47 */ 48 struct rcar_du_crtc { 49 struct drm_crtc crtc; 50 51 struct clk *clock; 52 struct clk *extclock; 53 unsigned int mmio_offset; 54 unsigned int index; 55 bool initialized; 56 57 bool vblank_enable; 58 struct drm_pending_vblank_event *event; 59 wait_queue_head_t flip_wait; 60 61 spinlock_t vblank_lock; 62 wait_queue_head_t vblank_wait; 63 unsigned int vblank_count; 64 65 unsigned int outputs; 66 67 struct rcar_du_group *group; 68 struct rcar_du_vsp *vsp; 69 unsigned int vsp_pipe; 70 }; 71 72 #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc) 73 74 /** 75 * struct rcar_du_crtc_state - Driver-specific CRTC state 76 * @state: base DRM CRTC state 77 * @crc: CRC computation configuration 78 */ 79 struct rcar_du_crtc_state { 80 struct drm_crtc_state state; 81 82 struct vsp1_du_crc_config crc; 83 }; 84 85 #define to_rcar_crtc_state(s) container_of(s, struct rcar_du_crtc_state, state) 86 87 enum rcar_du_output { 88 RCAR_DU_OUTPUT_DPAD0, 89 RCAR_DU_OUTPUT_DPAD1, 90 RCAR_DU_OUTPUT_LVDS0, 91 RCAR_DU_OUTPUT_LVDS1, 92 RCAR_DU_OUTPUT_HDMI0, 93 RCAR_DU_OUTPUT_HDMI1, 94 RCAR_DU_OUTPUT_TCON, 95 RCAR_DU_OUTPUT_MAX, 96 }; 97 98 int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex, 99 unsigned int hwindex); 100 void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc); 101 void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc); 102 103 void rcar_du_crtc_route_output(struct drm_crtc *crtc, 104 enum rcar_du_output output); 105 void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc); 106 107 #endif /* __RCAR_DU_CRTC_H__ */ 108
