1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * R-Car Display Unit CRTCs 4 * 5 * Copyright (C) 2013-2015 Renesas Electronics Corporation 6 * 7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) 8 */ 9 10 #ifndef __RCAR_DU_CRTC_H__ 11 #define __RCAR_DU_CRTC_H__ 12 13 #include <linux/mutex.h> 14 #include <linux/spinlock.h> 15 #include <linux/wait.h> 16 17 #include <drm/drm_crtc.h> 18 #include <drm/drm_writeback.h> 19 20 #include <media/vsp1.h> 21 22 struct rcar_du_group; 23 struct rcar_du_vsp; 24 25 /** 26 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor 27 * @crtc: base DRM CRTC 28 * @dev: the DU device 29 * @clock: the CRTC functional clock 30 * @extclock: external pixel dot clock (optional) 31 * @mmio_offset: offset of the CRTC registers in the DU MMIO block 32 * @index: CRTC hardware index 33 * @initialized: whether the CRTC has been initialized and clocks enabled 34 * @dsysr: cached value of the DSYSR register 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 * @group: CRTC group this CRTC belongs to 42 * @cmm: CMM associated with this CRTC 43 * @vsp: VSP feeding video to this CRTC 44 * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC 45 * @writeback: the writeback connector 46 */ 47 struct rcar_du_crtc { 48 struct drm_crtc crtc; 49 50 struct rcar_du_device *dev; 51 struct clk *clock; 52 struct clk *extclock; 53 unsigned int mmio_offset; 54 unsigned int index; 55 bool initialized; 56 57 u32 dsysr; 58 59 bool vblank_enable; 60 struct drm_pending_vblank_event *event; 61 wait_queue_head_t flip_wait; 62 63 spinlock_t vblank_lock; 64 wait_queue_head_t vblank_wait; 65 unsigned int vblank_count; 66 67 struct rcar_du_group *group; 68 struct platform_device *cmm; 69 struct rcar_du_vsp *vsp; 70 unsigned int vsp_pipe; 71 72 const char *const *sources; 73 unsigned int sources_count; 74 75 struct drm_writeback_connector writeback; 76 }; 77 78 #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc) 79 #define wb_to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, writeback) 80 81 /** 82 * struct rcar_du_crtc_state - Driver-specific CRTC state 83 * @state: base DRM CRTC state 84 * @crc: CRC computation configuration 85 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC 86 */ 87 struct rcar_du_crtc_state { 88 struct drm_crtc_state state; 89 90 struct vsp1_du_crc_config crc; 91 unsigned int outputs; 92 }; 93 94 #define to_rcar_crtc_state(s) container_of(s, struct rcar_du_crtc_state, state) 95 96 int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex, 97 unsigned int hwindex); 98 99 void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc); 100 101 void rcar_du_crtc_dsysr_clr_set(struct rcar_du_crtc *rcrtc, u32 clr, u32 set); 102 103 #endif /* __RCAR_DU_CRTC_H__ */ 104