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9#include <drm/drm_atomic_helper.h>
10#include <drm/drm_plane_helper.h>
11#include <drm/drm_gem_framebuffer_helper.h>
12#include <drm/drmP.h>
13
14#include "sun4i_backend.h"
15#include "sun4i_frontend.h"
16#include "sun4i_layer.h"
17#include "sunxi_engine.h"
18
19static void sun4i_backend_layer_reset(struct drm_plane *plane)
20{
21 struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
22 struct sun4i_layer_state *state;
23
24 if (plane->state) {
25 state = state_to_sun4i_layer_state(plane->state);
26
27 __drm_atomic_helper_plane_destroy_state(&state->state);
28
29 kfree(state);
30 plane->state = NULL;
31 }
32
33 state = kzalloc(sizeof(*state), GFP_KERNEL);
34 if (state) {
35 __drm_atomic_helper_plane_reset(plane, &state->state);
36 plane->state->zpos = layer->id;
37 }
38}
39
40static struct drm_plane_state *
41sun4i_backend_layer_duplicate_state(struct drm_plane *plane)
42{
43 struct sun4i_layer_state *orig = state_to_sun4i_layer_state(plane->state);
44 struct sun4i_layer_state *copy;
45
46 copy = kzalloc(sizeof(*copy), GFP_KERNEL);
47 if (!copy)
48 return NULL;
49
50 __drm_atomic_helper_plane_duplicate_state(plane, ©->state);
51 copy->uses_frontend = orig->uses_frontend;
52
53 return ©->state;
54}
55
56static void sun4i_backend_layer_destroy_state(struct drm_plane *plane,
57 struct drm_plane_state *state)
58{
59 struct sun4i_layer_state *s_state = state_to_sun4i_layer_state(state);
60
61 __drm_atomic_helper_plane_destroy_state(state);
62
63 kfree(s_state);
64}
65
66static void sun4i_backend_layer_atomic_disable(struct drm_plane *plane,
67 struct drm_plane_state *old_state)
68{
69 struct sun4i_layer_state *layer_state = state_to_sun4i_layer_state(old_state);
70 struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
71 struct sun4i_backend *backend = layer->backend;
72
73 sun4i_backend_layer_enable(backend, layer->id, false);
74
75 if (layer_state->uses_frontend) {
76 unsigned long flags;
77
78 spin_lock_irqsave(&backend->frontend_lock, flags);
79 backend->frontend_teardown = true;
80 spin_unlock_irqrestore(&backend->frontend_lock, flags);
81 }
82}
83
84static void sun4i_backend_layer_atomic_update(struct drm_plane *plane,
85 struct drm_plane_state *old_state)
86{
87 struct sun4i_layer_state *layer_state = state_to_sun4i_layer_state(plane->state);
88 struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
89 struct sun4i_backend *backend = layer->backend;
90 struct sun4i_frontend *frontend = backend->frontend;
91
92 sun4i_backend_cleanup_layer(backend, layer->id);
93
94 if (layer_state->uses_frontend) {
95 sun4i_frontend_init(frontend);
96 sun4i_frontend_update_coord(frontend, plane);
97 sun4i_frontend_update_buffer(frontend, plane);
98 sun4i_frontend_update_formats(frontend, plane,
99 DRM_FORMAT_XRGB8888);
100 sun4i_backend_update_layer_frontend(backend, layer->id,
101 DRM_FORMAT_XRGB8888);
102 sun4i_frontend_enable(frontend);
103 } else {
104 sun4i_backend_update_layer_formats(backend, layer->id, plane);
105 sun4i_backend_update_layer_buffer(backend, layer->id, plane);
106 }
107
108 sun4i_backend_update_layer_coord(backend, layer->id, plane);
109 sun4i_backend_update_layer_zpos(backend, layer->id, plane);
110 sun4i_backend_layer_enable(backend, layer->id, true);
111}
112
113static bool sun4i_layer_format_mod_supported(struct drm_plane *plane,
114 uint32_t format, uint64_t modifier)
115{
116 struct sun4i_layer *layer = plane_to_sun4i_layer(plane);
117
118 if (IS_ERR_OR_NULL(layer->backend->frontend))
119 sun4i_backend_format_is_supported(format, modifier);
120
121 return sun4i_backend_format_is_supported(format, modifier) ||
122 sun4i_frontend_format_is_supported(format, modifier);
123}
124
125static const struct drm_plane_helper_funcs sun4i_backend_layer_helper_funcs = {
126 .prepare_fb = drm_gem_fb_prepare_fb,
127 .atomic_disable = sun4i_backend_layer_atomic_disable,
128 .atomic_update = sun4i_backend_layer_atomic_update,
129};
130
131static const struct drm_plane_funcs sun4i_backend_layer_funcs = {
132 .atomic_destroy_state = sun4i_backend_layer_destroy_state,
133 .atomic_duplicate_state = sun4i_backend_layer_duplicate_state,
134 .destroy = drm_plane_cleanup,
135 .disable_plane = drm_atomic_helper_disable_plane,
136 .reset = sun4i_backend_layer_reset,
137 .update_plane = drm_atomic_helper_update_plane,
138 .format_mod_supported = sun4i_layer_format_mod_supported,
139};
140
141static const uint32_t sun4i_layer_formats[] = {
142 DRM_FORMAT_ARGB8888,
143 DRM_FORMAT_ARGB4444,
144 DRM_FORMAT_ARGB1555,
145 DRM_FORMAT_BGRX8888,
146 DRM_FORMAT_RGBA5551,
147 DRM_FORMAT_RGBA4444,
148 DRM_FORMAT_RGB888,
149 DRM_FORMAT_RGB565,
150 DRM_FORMAT_NV12,
151 DRM_FORMAT_NV16,
152 DRM_FORMAT_NV21,
153 DRM_FORMAT_NV61,
154 DRM_FORMAT_UYVY,
155 DRM_FORMAT_VYUY,
156 DRM_FORMAT_XRGB8888,
157 DRM_FORMAT_YUV411,
158 DRM_FORMAT_YUV420,
159 DRM_FORMAT_YUV422,
160 DRM_FORMAT_YUV444,
161 DRM_FORMAT_YUYV,
162 DRM_FORMAT_YVU411,
163 DRM_FORMAT_YVU420,
164 DRM_FORMAT_YVU422,
165 DRM_FORMAT_YVU444,
166 DRM_FORMAT_YVYU,
167};
168
169static const uint32_t sun4i_backend_layer_formats[] = {
170 DRM_FORMAT_ARGB8888,
171 DRM_FORMAT_ARGB4444,
172 DRM_FORMAT_ARGB1555,
173 DRM_FORMAT_RGBA5551,
174 DRM_FORMAT_RGBA4444,
175 DRM_FORMAT_RGB888,
176 DRM_FORMAT_RGB565,
177 DRM_FORMAT_UYVY,
178 DRM_FORMAT_VYUY,
179 DRM_FORMAT_XRGB8888,
180 DRM_FORMAT_YUYV,
181 DRM_FORMAT_YVYU,
182};
183
184static const uint64_t sun4i_layer_modifiers[] = {
185 DRM_FORMAT_MOD_LINEAR,
186 DRM_FORMAT_MOD_ALLWINNER_TILED,
187 DRM_FORMAT_MOD_INVALID
188};
189
190static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
191 struct sun4i_backend *backend,
192 enum drm_plane_type type)
193{
194 const uint64_t *modifiers = sun4i_layer_modifiers;
195 const uint32_t *formats = sun4i_layer_formats;
196 unsigned int formats_len = ARRAY_SIZE(sun4i_layer_formats);
197 struct sun4i_layer *layer;
198 int ret;
199
200 layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
201 if (!layer)
202 return ERR_PTR(-ENOMEM);
203
204 layer->backend = backend;
205
206 if (IS_ERR_OR_NULL(backend->frontend)) {
207 formats = sun4i_backend_layer_formats;
208 formats_len = ARRAY_SIZE(sun4i_backend_layer_formats);
209 modifiers = NULL;
210 }
211
212
213 ret = drm_universal_plane_init(drm, &layer->plane, 0,
214 &sun4i_backend_layer_funcs,
215 formats, formats_len,
216 modifiers, type, NULL);
217 if (ret) {
218 dev_err(drm->dev, "Couldn't initialize layer\n");
219 return ERR_PTR(ret);
220 }
221
222 drm_plane_helper_add(&layer->plane,
223 &sun4i_backend_layer_helper_funcs);
224
225 drm_plane_create_alpha_property(&layer->plane);
226 drm_plane_create_zpos_property(&layer->plane, 0, 0,
227 SUN4I_BACKEND_NUM_LAYERS - 1);
228
229 return layer;
230}
231
232struct drm_plane **sun4i_layers_init(struct drm_device *drm,
233 struct sunxi_engine *engine)
234{
235 struct drm_plane **planes;
236 struct sun4i_backend *backend = engine_to_sun4i_backend(engine);
237 int i;
238
239
240 planes = devm_kcalloc(drm->dev, SUN4I_BACKEND_NUM_LAYERS + 1,
241 sizeof(*planes), GFP_KERNEL);
242 if (!planes)
243 return ERR_PTR(-ENOMEM);
244
245 for (i = 0; i < SUN4I_BACKEND_NUM_LAYERS; i++) {
246 enum drm_plane_type type = i ? DRM_PLANE_TYPE_OVERLAY : DRM_PLANE_TYPE_PRIMARY;
247 struct sun4i_layer *layer;
248
249 layer = sun4i_layer_init_one(drm, backend, type);
250 if (IS_ERR(layer)) {
251 dev_err(drm->dev, "Couldn't initialize %s plane\n",
252 i ? "overlay" : "primary");
253 return ERR_CAST(layer);
254 };
255
256 layer->id = i;
257 planes[i] = &layer->plane;
258 };
259
260 return planes;
261}
262
