104 lines · c
1/* SPDX-License-Identifier: GPL-2.0+ */2/*3 * R-Car Display Unit CRTCs4 *5 * Copyright (C) 2013-2015 Renesas Electronics Corporation6 *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 22struct rcar_du_group;23struct rcar_du_vsp;24 25/**26 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor27 * @crtc: base DRM CRTC28 * @dev: the DU device29 * @clock: the CRTC functional clock30 * @extclock: external pixel dot clock (optional)31 * @mmio_offset: offset of the CRTC registers in the DU MMIO block32 * @index: CRTC hardware index33 * @initialized: whether the CRTC has been initialized and clocks enabled34 * @dsysr: cached value of the DSYSR register35 * @vblank_enable: whether vblank events are enabled on this CRTC36 * @event: event to post when the pending page flip completes37 * @flip_wait: wait queue used to signal page flip completion38 * @vblank_lock: protects vblank_wait and vblank_count39 * @vblank_wait: wait queue used to signal vertical blanking40 * @vblank_count: number of vertical blanking interrupts to wait for41 * @group: CRTC group this CRTC belongs to42 * @cmm: CMM associated with this CRTC43 * @vsp: VSP feeding video to this CRTC44 * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC45 * @writeback: the writeback connector46 */47struct 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 state83 * @state: base DRM CRTC state84 * @crc: CRC computation configuration85 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC86 */87struct 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 96int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex,97 unsigned int hwindex);98 99void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc);100 101void rcar_du_crtc_dsysr_clr_set(struct rcar_du_crtc *rcrtc, u32 clr, u32 set);102 103#endif /* __RCAR_DU_CRTC_H__ */104