summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/vkms/vkms_drv.h
blob: 9496fdc900b8cf4c31531f5dde3b0a046e250734 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
/* SPDX-License-Identifier: GPL-2.0+ */

#ifndef _VKMS_DRV_H_
#define _VKMS_DRV_H_

#include <linux/hrtimer.h>

#include <drm/drm.h>
#include <drm/drm_gem.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_encoder.h>
#include <drm/drm_writeback.h>

#define XRES_MIN    20
#define YRES_MIN    20

#define XRES_DEF  1024
#define YRES_DEF   768

#define XRES_MAX  8192
#define YRES_MAX  8192

#define NUM_OVERLAY_PLANES 8

struct vkms_writeback_job {
	struct dma_buf_map map[DRM_FORMAT_MAX_PLANES];
	struct dma_buf_map data[DRM_FORMAT_MAX_PLANES];
};

struct vkms_composer {
	struct drm_framebuffer fb;
	struct drm_rect src, dst;
	struct dma_buf_map map[4];
	unsigned int offset;
	unsigned int pitch;
	unsigned int cpp;
};

/**
 * vkms_plane_state - Driver specific plane state
 * @base: base plane state
 * @composer: data required for composing computation
 */
struct vkms_plane_state {
	struct drm_shadow_plane_state base;
	struct vkms_composer *composer;
};

struct vkms_plane {
	struct drm_plane base;
};

/**
 * vkms_crtc_state - Driver specific CRTC state
 * @base: base CRTC state
 * @composer_work: work struct to compose and add CRC entries
 * @n_frame_start: start frame number for computed CRC
 * @n_frame_end: end frame number for computed CRC
 */
struct vkms_crtc_state {
	struct drm_crtc_state base;
	struct work_struct composer_work;

	int num_active_planes;
	/* stack of active planes for crc computation, should be in z order */
	struct vkms_plane_state **active_planes;
	struct vkms_writeback_job *active_writeback;

	/* below four are protected by vkms_output.composer_lock */
	bool crc_pending;
	bool wb_pending;
	u64 frame_start;
	u64 frame_end;
};

struct vkms_output {
	struct drm_crtc crtc;
	struct drm_encoder encoder;
	struct drm_connector connector;
	struct drm_writeback_connector wb_connector;
	struct hrtimer vblank_hrtimer;
	ktime_t period_ns;
	struct drm_pending_vblank_event *event;
	/* ordered wq for composer_work */
	struct workqueue_struct *composer_workq;
	/* protects concurrent access to composer */
	spinlock_t lock;

	/* protected by @lock */
	bool composer_enabled;
	struct vkms_crtc_state *composer_state;

	spinlock_t composer_lock;
};

struct vkms_device;

struct vkms_config {
	bool writeback;
	bool cursor;
	bool overlay;
	/* only set when instantiated */
	struct vkms_device *dev;
};

struct vkms_device {
	struct drm_device drm;
	struct platform_device *platform;
	struct vkms_output output;
	const struct vkms_config *config;
};

#define drm_crtc_to_vkms_output(target) \
	container_of(target, struct vkms_output, crtc)

#define drm_device_to_vkms_device(target) \
	container_of(target, struct vkms_device, drm)

#define to_vkms_crtc_state(target)\
	container_of(target, struct vkms_crtc_state, base)

#define to_vkms_plane_state(target)\
	container_of(target, struct vkms_plane_state, base.base)

/* CRTC */
int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
		   struct drm_plane *primary, struct drm_plane *cursor);

int vkms_output_init(struct vkms_device *vkmsdev, int index);

struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
				   enum drm_plane_type type, int index);

/* CRC Support */
const char *const *vkms_get_crc_sources(struct drm_crtc *crtc,
					size_t *count);
int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name);
int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
			   size_t *values_cnt);

/* Composer Support */
void vkms_composer_worker(struct work_struct *work);
void vkms_set_composer(struct vkms_output *out, bool enabled);

/* Writeback */
int vkms_enable_writeback_connector(struct vkms_device *vkmsdev);

#endif /* _VKMS_DRV_H_ */