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