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7#include <drm/drm_atomic.h>
8#include <drm/drm_atomic_helper.h>
9#include <drm/drm_atomic_uapi.h>
10#include <drm/drm_fourcc.h>
11#include <drm/drm_gem_atomic_helper.h>
12#include <drm/drm_plane_helper.h>
13
14#include "mtk_drm_crtc.h"
15#include "mtk_drm_ddp_comp.h"
16#include "mtk_drm_drv.h"
17#include "mtk_drm_gem.h"
18#include "mtk_drm_plane.h"
19
20static const u32 formats[] = {
21 DRM_FORMAT_XRGB8888,
22 DRM_FORMAT_ARGB8888,
23 DRM_FORMAT_BGRX8888,
24 DRM_FORMAT_BGRA8888,
25 DRM_FORMAT_ABGR8888,
26 DRM_FORMAT_XBGR8888,
27 DRM_FORMAT_RGB888,
28 DRM_FORMAT_BGR888,
29 DRM_FORMAT_RGB565,
30 DRM_FORMAT_UYVY,
31 DRM_FORMAT_YUYV,
32};
33
34static void mtk_plane_reset(struct drm_plane *plane)
35{
36 struct mtk_plane_state *state;
37
38 if (plane->state) {
39 __drm_atomic_helper_plane_destroy_state(plane->state);
40
41 state = to_mtk_plane_state(plane->state);
42 memset(state, 0, sizeof(*state));
43 } else {
44 state = kzalloc(sizeof(*state), GFP_KERNEL);
45 if (!state)
46 return;
47 plane->state = &state->base;
48 }
49
50 state->base.plane = plane;
51 state->pending.format = DRM_FORMAT_RGB565;
52}
53
54static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane)
55{
56 struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state);
57 struct mtk_plane_state *state;
58
59 state = kzalloc(sizeof(*state), GFP_KERNEL);
60 if (!state)
61 return NULL;
62
63 __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
64
65 WARN_ON(state->base.plane != plane);
66
67 state->pending = old_state->pending;
68
69 return &state->base;
70}
71
72static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
73 struct drm_plane_state *state)
74{
75 __drm_atomic_helper_plane_destroy_state(state);
76 kfree(to_mtk_plane_state(state));
77}
78
79static int mtk_plane_atomic_async_check(struct drm_plane *plane,
80 struct drm_atomic_state *state)
81{
82 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
83 plane);
84 struct drm_crtc_state *crtc_state;
85 int ret;
86
87 if (plane != new_plane_state->crtc->cursor)
88 return -EINVAL;
89
90 if (!plane->state)
91 return -EINVAL;
92
93 if (!plane->state->fb)
94 return -EINVAL;
95
96 ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane,
97 to_mtk_plane_state(new_plane_state));
98 if (ret)
99 return ret;
100
101 if (state)
102 crtc_state = drm_atomic_get_existing_crtc_state(state,
103 new_plane_state->crtc);
104 else
105 crtc_state = new_plane_state->crtc->state;
106
107 return drm_atomic_helper_check_plane_state(plane->state, crtc_state,
108 DRM_PLANE_HELPER_NO_SCALING,
109 DRM_PLANE_HELPER_NO_SCALING,
110 true, true);
111}
112
113static void mtk_plane_update_new_state(struct drm_plane_state *new_state,
114 struct mtk_plane_state *mtk_plane_state)
115{
116 struct drm_framebuffer *fb = new_state->fb;
117 struct drm_gem_object *gem;
118 struct mtk_drm_gem_obj *mtk_gem;
119 unsigned int pitch, format;
120 dma_addr_t addr;
121
122 gem = fb->obj[0];
123 mtk_gem = to_mtk_gem_obj(gem);
124 addr = mtk_gem->dma_addr;
125 pitch = fb->pitches[0];
126 format = fb->format->format;
127
128 addr += (new_state->src.x1 >> 16) * fb->format->cpp[0];
129 addr += (new_state->src.y1 >> 16) * pitch;
130
131 mtk_plane_state->pending.enable = true;
132 mtk_plane_state->pending.pitch = pitch;
133 mtk_plane_state->pending.format = format;
134 mtk_plane_state->pending.addr = addr;
135 mtk_plane_state->pending.x = new_state->dst.x1;
136 mtk_plane_state->pending.y = new_state->dst.y1;
137 mtk_plane_state->pending.width = drm_rect_width(&new_state->dst);
138 mtk_plane_state->pending.height = drm_rect_height(&new_state->dst);
139 mtk_plane_state->pending.rotation = new_state->rotation;
140}
141
142static void mtk_plane_atomic_async_update(struct drm_plane *plane,
143 struct drm_atomic_state *state)
144{
145 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
146 plane);
147 struct mtk_plane_state *new_plane_state = to_mtk_plane_state(plane->state);
148
149 plane->state->crtc_x = new_state->crtc_x;
150 plane->state->crtc_y = new_state->crtc_y;
151 plane->state->crtc_h = new_state->crtc_h;
152 plane->state->crtc_w = new_state->crtc_w;
153 plane->state->src_x = new_state->src_x;
154 plane->state->src_y = new_state->src_y;
155 plane->state->src_h = new_state->src_h;
156 plane->state->src_w = new_state->src_w;
157 swap(plane->state->fb, new_state->fb);
158
159 mtk_plane_update_new_state(new_state, new_plane_state);
160 wmb();
161 new_plane_state->pending.async_dirty = true;
162 mtk_drm_crtc_async_update(new_state->crtc, plane, state);
163}
164
165static const struct drm_plane_funcs mtk_plane_funcs = {
166 .update_plane = drm_atomic_helper_update_plane,
167 .disable_plane = drm_atomic_helper_disable_plane,
168 .destroy = drm_plane_cleanup,
169 .reset = mtk_plane_reset,
170 .atomic_duplicate_state = mtk_plane_duplicate_state,
171 .atomic_destroy_state = mtk_drm_plane_destroy_state,
172};
173
174static int mtk_plane_atomic_check(struct drm_plane *plane,
175 struct drm_atomic_state *state)
176{
177 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
178 plane);
179 struct drm_framebuffer *fb = new_plane_state->fb;
180 struct drm_crtc_state *crtc_state;
181 int ret;
182
183 if (!fb)
184 return 0;
185
186 if (WARN_ON(!new_plane_state->crtc))
187 return 0;
188
189 ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane,
190 to_mtk_plane_state(new_plane_state));
191 if (ret)
192 return ret;
193
194 crtc_state = drm_atomic_get_crtc_state(state,
195 new_plane_state->crtc);
196 if (IS_ERR(crtc_state))
197 return PTR_ERR(crtc_state);
198
199 return drm_atomic_helper_check_plane_state(new_plane_state,
200 crtc_state,
201 DRM_PLANE_HELPER_NO_SCALING,
202 DRM_PLANE_HELPER_NO_SCALING,
203 true, true);
204}
205
206static void mtk_plane_atomic_disable(struct drm_plane *plane,
207 struct drm_atomic_state *state)
208{
209 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
210 plane);
211 struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state);
212 mtk_plane_state->pending.enable = false;
213 wmb();
214 mtk_plane_state->pending.dirty = true;
215}
216
217static void mtk_plane_atomic_update(struct drm_plane *plane,
218 struct drm_atomic_state *state)
219{
220 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
221 plane);
222 struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state);
223
224 if (!new_state->crtc || WARN_ON(!new_state->fb))
225 return;
226
227 if (!new_state->visible) {
228 mtk_plane_atomic_disable(plane, state);
229 return;
230 }
231
232 mtk_plane_update_new_state(new_state, mtk_plane_state);
233 wmb();
234 mtk_plane_state->pending.dirty = true;
235}
236
237static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
238 .atomic_check = mtk_plane_atomic_check,
239 .atomic_update = mtk_plane_atomic_update,
240 .atomic_disable = mtk_plane_atomic_disable,
241 .atomic_async_update = mtk_plane_atomic_async_update,
242 .atomic_async_check = mtk_plane_atomic_async_check,
243};
244
245int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
246 unsigned long possible_crtcs, enum drm_plane_type type,
247 unsigned int supported_rotations)
248{
249 int err;
250
251 err = drm_universal_plane_init(dev, plane, possible_crtcs,
252 &mtk_plane_funcs, formats,
253 ARRAY_SIZE(formats), NULL, type, NULL);
254 if (err) {
255 DRM_ERROR("failed to initialize plane\n");
256 return err;
257 }
258
259 if (supported_rotations & ~DRM_MODE_ROTATE_0) {
260 err = drm_plane_create_rotation_property(plane,
261 DRM_MODE_ROTATE_0,
262 supported_rotations);
263 if (err)
264 DRM_INFO("Create rotation property failed\n");
265 }
266
267 drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
268
269 return 0;
270}
271
