Merge tag 'drm-intel-fixes-2021-08-12' of git://anongit.freedesktop.org/drm/drm-intel...
[linux-2.6-microblaze.git] / drivers / gpu / drm / vkms / vkms_drv.h
1 /* SPDX-License-Identifier: GPL-2.0+ */
2
3 #ifndef _VKMS_DRV_H_
4 #define _VKMS_DRV_H_
5
6 #include <linux/hrtimer.h>
7
8 #include <drm/drm.h>
9 #include <drm/drm_gem.h>
10 #include <drm/drm_encoder.h>
11 #include <drm/drm_writeback.h>
12
13 #define XRES_MIN    20
14 #define YRES_MIN    20
15
16 #define XRES_DEF  1024
17 #define YRES_DEF   768
18
19 #define XRES_MAX  8192
20 #define YRES_MAX  8192
21
22 struct vkms_composer {
23         struct drm_framebuffer fb;
24         struct drm_rect src, dst;
25         unsigned int offset;
26         unsigned int pitch;
27         unsigned int cpp;
28 };
29
30 /**
31  * vkms_plane_state - Driver specific plane state
32  * @base: base plane state
33  * @composer: data required for composing computation
34  */
35 struct vkms_plane_state {
36         struct drm_plane_state base;
37         struct vkms_composer *composer;
38 };
39
40 struct vkms_plane {
41         struct drm_plane base;
42 };
43
44 /**
45  * vkms_crtc_state - Driver specific CRTC state
46  * @base: base CRTC state
47  * @composer_work: work struct to compose and add CRC entries
48  * @n_frame_start: start frame number for computed CRC
49  * @n_frame_end: end frame number for computed CRC
50  */
51 struct vkms_crtc_state {
52         struct drm_crtc_state base;
53         struct work_struct composer_work;
54
55         int num_active_planes;
56         /* stack of active planes for crc computation, should be in z order */
57         struct vkms_plane_state **active_planes;
58         void *active_writeback;
59
60         /* below four are protected by vkms_output.composer_lock */
61         bool crc_pending;
62         bool wb_pending;
63         u64 frame_start;
64         u64 frame_end;
65 };
66
67 struct vkms_output {
68         struct drm_crtc crtc;
69         struct drm_encoder encoder;
70         struct drm_connector connector;
71         struct drm_writeback_connector wb_connector;
72         struct hrtimer vblank_hrtimer;
73         ktime_t period_ns;
74         struct drm_pending_vblank_event *event;
75         /* ordered wq for composer_work */
76         struct workqueue_struct *composer_workq;
77         /* protects concurrent access to composer */
78         spinlock_t lock;
79
80         /* protected by @lock */
81         bool composer_enabled;
82         struct vkms_crtc_state *composer_state;
83
84         spinlock_t composer_lock;
85 };
86
87 struct vkms_device;
88
89 struct vkms_config {
90         bool writeback;
91         bool cursor;
92         bool overlay;
93         /* only set when instantiated */
94         struct vkms_device *dev;
95 };
96
97 struct vkms_device {
98         struct drm_device drm;
99         struct platform_device *platform;
100         struct vkms_output output;
101         const struct vkms_config *config;
102 };
103
104 #define drm_crtc_to_vkms_output(target) \
105         container_of(target, struct vkms_output, crtc)
106
107 #define drm_device_to_vkms_device(target) \
108         container_of(target, struct vkms_device, drm)
109
110 #define to_vkms_crtc_state(target)\
111         container_of(target, struct vkms_crtc_state, base)
112
113 #define to_vkms_plane_state(target)\
114         container_of(target, struct vkms_plane_state, base)
115
116 /* CRTC */
117 int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
118                    struct drm_plane *primary, struct drm_plane *cursor);
119
120 int vkms_output_init(struct vkms_device *vkmsdev, int index);
121
122 struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
123                                    enum drm_plane_type type, int index);
124
125 /* CRC Support */
126 const char *const *vkms_get_crc_sources(struct drm_crtc *crtc,
127                                         size_t *count);
128 int vkms_set_crc_source(struct drm_crtc *crtc, const char *src_name);
129 int vkms_verify_crc_source(struct drm_crtc *crtc, const char *source_name,
130                            size_t *values_cnt);
131
132 /* Composer Support */
133 void vkms_composer_worker(struct work_struct *work);
134 void vkms_set_composer(struct vkms_output *out, bool enabled);
135
136 /* Writeback */
137 int vkms_enable_writeback_connector(struct vkms_device *vkmsdev);
138
139 #endif /* _VKMS_DRV_H_ */