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1/*
2 * rcar_du_crtc.h -- R-Car Display Unit CRTCs
3 *
4 * Copyright (C) 2013-2014 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/wait.h>
19
20#include <drm/drmP.h>
21#include <drm/drm_crtc.h>
22
23struct rcar_du_group;
24struct rcar_du_vsp;
25
26/**
27 * struct rcar_du_crtc - the CRTC, representing a DU superposition processor
28 * @crtc: base DRM CRTC
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 software and hardware index
33 * @started: whether the CRTC has been started and is running
34 * @event: event to post when the pending page flip completes
35 * @flip_wait: wait queue used to signal page flip completion
36 * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
37 * @group: CRTC group this CRTC belongs to
38 */
39struct rcar_du_crtc {
40 struct drm_crtc crtc;
41
42 struct clk *clock;
43 struct clk *extclock;
44 unsigned int mmio_offset;
45 unsigned int index;
46 bool started;
47
48 struct drm_pending_vblank_event *event;
49 wait_queue_head_t flip_wait;
50
51 unsigned int outputs;
52
53 struct rcar_du_group *group;
54 struct rcar_du_vsp *vsp;
55};
56
57#define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc)
58
59enum rcar_du_output {
60 RCAR_DU_OUTPUT_DPAD0,
61 RCAR_DU_OUTPUT_DPAD1,
62 RCAR_DU_OUTPUT_LVDS0,
63 RCAR_DU_OUTPUT_LVDS1,
64 RCAR_DU_OUTPUT_TCON,
65 RCAR_DU_OUTPUT_MAX,
66};
67
68int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index);
69void rcar_du_crtc_enable_vblank(struct rcar_du_crtc *rcrtc, bool enable);
70void rcar_du_crtc_suspend(struct rcar_du_crtc *rcrtc);
71void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc);
72
73void rcar_du_crtc_route_output(struct drm_crtc *crtc,
74 enum rcar_du_output output);
75
76#endif /* __RCAR_DU_CRTC_H__ */
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
22struct rcar_du_group;
23struct 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 */
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 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 */
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__ */