1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * rcar_du_crtc.h -- R-Car Display Unit CRTCs
5 * Copyright (C) 2013-2015 Renesas Electronics Corporation
7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
10 #ifndef __RCAR_DU_CRTC_H__
11 #define __RCAR_DU_CRTC_H__
13 #include <linux/mutex.h>
14 #include <linux/spinlock.h>
15 #include <linux/wait.h>
17 #include <drm/drm_crtc.h>
18 #include <drm/drm_writeback.h>
20 #include <media/vsp1.h>
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 hardware index
32 * @initialized: whether the CRTC has been initialized and clocks enabled
33 * @dsysr: cached value of the DSYSR register
34 * @vblank_enable: whether vblank events are enabled on this CRTC
35 * @event: event to post when the pending page flip completes
36 * @flip_wait: wait queue used to signal page flip completion
37 * @vblank_lock: protects vblank_wait and vblank_count
38 * @vblank_wait: wait queue used to signal vertical blanking
39 * @vblank_count: number of vertical blanking interrupts to wait for
40 * @group: CRTC group this CRTC belongs to
41 * @vsp: VSP feeding video to this CRTC
42 * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC
43 * @writeback: the writeback connector
50 unsigned int mmio_offset;
57 struct drm_pending_vblank_event *event;
58 wait_queue_head_t flip_wait;
60 spinlock_t vblank_lock;
61 wait_queue_head_t vblank_wait;
62 unsigned int vblank_count;
64 struct rcar_du_group *group;
65 struct rcar_du_vsp *vsp;
66 unsigned int vsp_pipe;
68 const char *const *sources;
69 unsigned int sources_count;
71 struct drm_writeback_connector writeback;
74 #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc)
75 #define wb_to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, writeback)
78 * struct rcar_du_crtc_state - Driver-specific CRTC state
79 * @state: base DRM CRTC state
80 * @crc: CRC computation configuration
81 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
83 struct rcar_du_crtc_state {
84 struct drm_crtc_state state;
86 struct vsp1_du_crc_config crc;
90 #define to_rcar_crtc_state(s) container_of(s, struct rcar_du_crtc_state, state)
103 int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int swindex,
104 unsigned int hwindex);
105 void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
106 void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
108 void rcar_du_crtc_finish_page_flip(struct rcar_du_crtc *rcrtc);
110 void rcar_du_crtc_dsysr_clr_set(struct rcar_du_crtc *rcrtc, u32 clr, u32 set);
112 #endif /* __RCAR_DU_CRTC_H__ */