This source file includes following definitions.
- mtk_plane_reset
- mtk_plane_duplicate_state
- mtk_drm_plane_destroy_state
- mtk_plane_atomic_check
- mtk_plane_atomic_update
- mtk_plane_atomic_disable
- mtk_plane_init
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6
7 #include <drm/drm_atomic.h>
8 #include <drm/drm_atomic_helper.h>
9 #include <drm/drm_fourcc.h>
10 #include <drm/drm_plane_helper.h>
11 #include <drm/drm_gem_framebuffer_helper.h>
12
13 #include "mtk_drm_crtc.h"
14 #include "mtk_drm_ddp_comp.h"
15 #include "mtk_drm_drv.h"
16 #include "mtk_drm_fb.h"
17 #include "mtk_drm_gem.h"
18 #include "mtk_drm_plane.h"
19
20 static const u32 formats[] = {
21 DRM_FORMAT_XRGB8888,
22 DRM_FORMAT_ARGB8888,
23 DRM_FORMAT_RGB565,
24 DRM_FORMAT_UYVY,
25 DRM_FORMAT_YUYV,
26 };
27
28 static void mtk_plane_reset(struct drm_plane *plane)
29 {
30 struct mtk_plane_state *state;
31
32 if (plane->state) {
33 __drm_atomic_helper_plane_destroy_state(plane->state);
34
35 state = to_mtk_plane_state(plane->state);
36 memset(state, 0, sizeof(*state));
37 } else {
38 state = kzalloc(sizeof(*state), GFP_KERNEL);
39 if (!state)
40 return;
41 plane->state = &state->base;
42 }
43
44 state->base.plane = plane;
45 state->pending.format = DRM_FORMAT_RGB565;
46 }
47
48 static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane)
49 {
50 struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state);
51 struct mtk_plane_state *state;
52
53 state = kzalloc(sizeof(*state), GFP_KERNEL);
54 if (!state)
55 return NULL;
56
57 __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
58
59 WARN_ON(state->base.plane != plane);
60
61 state->pending = old_state->pending;
62
63 return &state->base;
64 }
65
66 static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
67 struct drm_plane_state *state)
68 {
69 __drm_atomic_helper_plane_destroy_state(state);
70 kfree(to_mtk_plane_state(state));
71 }
72
73 static const struct drm_plane_funcs mtk_plane_funcs = {
74 .update_plane = drm_atomic_helper_update_plane,
75 .disable_plane = drm_atomic_helper_disable_plane,
76 .destroy = drm_plane_cleanup,
77 .reset = mtk_plane_reset,
78 .atomic_duplicate_state = mtk_plane_duplicate_state,
79 .atomic_destroy_state = mtk_drm_plane_destroy_state,
80 };
81
82 static int mtk_plane_atomic_check(struct drm_plane *plane,
83 struct drm_plane_state *state)
84 {
85 struct drm_framebuffer *fb = state->fb;
86 struct drm_crtc_state *crtc_state;
87
88 if (!fb)
89 return 0;
90
91 if (!state->crtc)
92 return 0;
93
94 crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
95 if (IS_ERR(crtc_state))
96 return PTR_ERR(crtc_state);
97
98 return drm_atomic_helper_check_plane_state(state, crtc_state,
99 DRM_PLANE_HELPER_NO_SCALING,
100 DRM_PLANE_HELPER_NO_SCALING,
101 true, true);
102 }
103
104 static void mtk_plane_atomic_update(struct drm_plane *plane,
105 struct drm_plane_state *old_state)
106 {
107 struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
108 struct drm_crtc *crtc = plane->state->crtc;
109 struct drm_framebuffer *fb = plane->state->fb;
110 struct drm_gem_object *gem;
111 struct mtk_drm_gem_obj *mtk_gem;
112 unsigned int pitch, format;
113 dma_addr_t addr;
114
115 if (!crtc || WARN_ON(!fb))
116 return;
117
118 gem = fb->obj[0];
119 mtk_gem = to_mtk_gem_obj(gem);
120 addr = mtk_gem->dma_addr;
121 pitch = fb->pitches[0];
122 format = fb->format->format;
123
124 addr += (plane->state->src.x1 >> 16) * fb->format->cpp[0];
125 addr += (plane->state->src.y1 >> 16) * pitch;
126
127 state->pending.enable = true;
128 state->pending.pitch = pitch;
129 state->pending.format = format;
130 state->pending.addr = addr;
131 state->pending.x = plane->state->dst.x1;
132 state->pending.y = plane->state->dst.y1;
133 state->pending.width = drm_rect_width(&plane->state->dst);
134 state->pending.height = drm_rect_height(&plane->state->dst);
135 wmb();
136 state->pending.dirty = true;
137 }
138
139 static void mtk_plane_atomic_disable(struct drm_plane *plane,
140 struct drm_plane_state *old_state)
141 {
142 struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
143
144 state->pending.enable = false;
145 wmb();
146 state->pending.dirty = true;
147 }
148
149 static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
150 .prepare_fb = drm_gem_fb_prepare_fb,
151 .atomic_check = mtk_plane_atomic_check,
152 .atomic_update = mtk_plane_atomic_update,
153 .atomic_disable = mtk_plane_atomic_disable,
154 };
155
156 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
157 unsigned long possible_crtcs, enum drm_plane_type type)
158 {
159 int err;
160
161 err = drm_universal_plane_init(dev, plane, possible_crtcs,
162 &mtk_plane_funcs, formats,
163 ARRAY_SIZE(formats), NULL, type, NULL);
164 if (err) {
165 DRM_ERROR("failed to initialize plane\n");
166 return err;
167 }
168
169 drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
170
171 return 0;
172 }