rzg2l_du_crtc.h

 1/* SPDX-License-Identifier: GPL-2.0+ */
 2/*
 3 * RZ/G2L Display Unit CRTCs
 4 *
 5 * Copyright (C) 2023 Renesas Electronics Corporation
 6 *
 7 * Based on rcar_du_crtc.h
 8 */
 9
10#ifndef __RZG2L_DU_CRTC_H__
11#define __RZG2L_DU_CRTC_H__
12
13#include <linux/container_of.h>
14#include <linux/mutex.h>
15#include <linux/spinlock.h>
16#include <linux/wait.h>
17
18#include <drm/drm_crtc.h>
19#include <drm/drm_writeback.h>
20
21#include <media/vsp1.h>
22
23struct clk;
24struct reset_control;
25struct rzg2l_du_vsp;
26struct rzg2l_du_format_info;
27
28/**
29 * struct rzg2l_du_crtc - the CRTC, representing a DU superposition processor
30 * @crtc: base DRM CRTC
31 * @dev: the DU device
32 * @initialized: whether the CRTC has been initialized and clocks enabled
33 * @vblank_enable: whether vblank events are enabled on this CRTC
34 * @event: event to post when the pending page flip completes
35 * @flip_wait: wait queue used to signal page flip completion
36 * @vsp: VSP feeding video to this CRTC
37 * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC
38 * @rstc: reset controller
39 * @rzg2l_clocks: the bus, main and video clock
40 */
41struct rzg2l_du_crtc {
42	struct drm_crtc crtc;
43
44	struct rzg2l_du_device *dev;
45	bool initialized;
46
47	bool vblank_enable;
48	struct drm_pending_vblank_event *event;
49	wait_queue_head_t flip_wait;
50
51	struct rzg2l_du_vsp *vsp;
52	unsigned int vsp_pipe;
53
54	const char *const *sources;
55	unsigned int sources_count;
56
57	struct reset_control *rstc;
58	struct {
59		struct clk *aclk;
60		struct clk *pclk;
61		struct clk *dclk;
62	} rzg2l_clocks;
63};
64
65static inline struct rzg2l_du_crtc *to_rzg2l_crtc(struct drm_crtc *c)
66{
67	return container_of(c, struct rzg2l_du_crtc, crtc);
68}
69
70/**
71 * struct rzg2l_du_crtc_state - Driver-specific CRTC state
72 * @state: base DRM CRTC state
73 * @outputs: bitmask of the outputs (enum rzg2l_du_output) driven by this CRTC
74 */
75struct rzg2l_du_crtc_state {
76	struct drm_crtc_state state;
77	unsigned int outputs;
78};
79
80static inline struct rzg2l_du_crtc_state *to_rzg2l_crtc_state(struct drm_crtc_state *s)
81{
82	return container_of(s, struct rzg2l_du_crtc_state, state);
83}
84
85int rzg2l_du_crtc_create(struct rzg2l_du_device *rcdu);
86
87void rzg2l_du_crtc_finish_page_flip(struct rzg2l_du_crtc *rcrtc);
88
89#endif /* __RZG2L_DU_CRTC_H__ */