1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2015 Free Electrons 4 * Copyright (C) 2015 NextThing Co 5 * 6 * Maxime Ripard <maxime.ripard@free-electrons.com> 7 */ 8 9 #include <drm/drm_atomic.h> 10 #include <drm/drm_atomic_helper.h> 11 #include <drm/drm_gem_atomic_helper.h> 12 #include <drm/drm_plane_helper.h> 13 14 #include "sun4i_backend.h" 15 #include "sun4i_frontend.h" 16 #include "sun4i_layer.h" 17 #include "sunxi_engine.h" 18 19 static void sun4i_backend_layer_reset(struct drm_plane *plane) 20 { 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 } 36 37 static struct drm_plane_state * 38 sun4i_backend_layer_duplicate_state(struct drm_plane *plane) 39 { 40 struct sun4i_layer_state *orig = state_to_sun4i_layer_state(plane->state); 41 struct sun4i_layer_state *copy; 42 43 copy = kzalloc(sizeof(*copy), GFP_KERNEL); 44 if (!copy) 45 return NULL; 46 47 __drm_atomic_helper_plane_duplicate_state(plane, ©->state); 48 copy->uses_frontend = orig->uses_frontend; 49 50 return ©->state; 51 } 52 53 static void sun4i_backend_layer_destroy_state(struct drm_plane *plane, 54 struct drm_plane_state *state) 55 { 56 struct sun4i_layer_state *s_state = state_to_sun4i_layer_state(state); 57 58 __drm_atomic_helper_plane_destroy_state(state); 59 60 kfree(s_state); 61 } 62 63 static void sun4i_backend_layer_atomic_disable(struct drm_plane *plane, 64 struct drm_atomic_state *state) 65 { 66 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, 67 plane); 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 83 static void sun4i_backend_layer_atomic_update(struct drm_plane *plane, 84 struct drm_atomic_state *state) 85 { 86 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, 87 plane); 88 struct sun4i_layer_state *layer_state = state_to_sun4i_layer_state(new_state); 89 struct sun4i_layer *layer = plane_to_sun4i_layer(plane); 90 struct sun4i_backend *backend = layer->backend; 91 struct sun4i_frontend *frontend = backend->frontend; 92 93 sun4i_backend_cleanup_layer(backend, layer->id); 94 95 if (layer_state->uses_frontend) { 96 sun4i_frontend_init(frontend); 97 sun4i_frontend_update_coord(frontend, plane); 98 sun4i_frontend_update_buffer(frontend, plane); 99 sun4i_frontend_update_formats(frontend, plane, 100 DRM_FORMAT_XRGB8888); 101 sun4i_backend_update_layer_frontend(backend, layer->id, 102 DRM_FORMAT_XRGB8888); 103 sun4i_frontend_enable(frontend); 104 } else { 105 sun4i_backend_update_layer_formats(backend, layer->id, plane); 106 sun4i_backend_update_layer_buffer(backend, layer->id, plane); 107 } 108 109 sun4i_backend_update_layer_coord(backend, layer->id, plane); 110 sun4i_backend_update_layer_zpos(backend, layer->id, plane); 111 sun4i_backend_layer_enable(backend, layer->id, true); 112 } 113 114 static bool sun4i_layer_format_mod_supported(struct drm_plane *plane, 115 uint32_t format, uint64_t modifier) 116 { 117 struct sun4i_layer *layer = plane_to_sun4i_layer(plane); 118 119 if (IS_ERR_OR_NULL(layer->backend->frontend)) 120 sun4i_backend_format_is_supported(format, modifier); 121 122 return sun4i_backend_format_is_supported(format, modifier) || 123 sun4i_frontend_format_is_supported(format, modifier); 124 } 125 126 static const struct drm_plane_helper_funcs sun4i_backend_layer_helper_funcs = { 127 .atomic_disable = sun4i_backend_layer_atomic_disable, 128 .atomic_update = sun4i_backend_layer_atomic_update, 129 }; 130 131 static 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 }; 140 141 static 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 }; 168 169 static 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 }; 183 184 static const uint64_t sun4i_layer_modifiers[] = { 185 DRM_FORMAT_MOD_LINEAR, 186 DRM_FORMAT_MOD_ALLWINNER_TILED, 187 DRM_FORMAT_MOD_INVALID 188 }; 189 190 static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm, 191 struct sun4i_backend *backend, 192 enum drm_plane_type type, 193 unsigned int id) 194 { 195 const uint64_t *modifiers = sun4i_layer_modifiers; 196 const uint32_t *formats = sun4i_layer_formats; 197 unsigned int formats_len = ARRAY_SIZE(sun4i_layer_formats); 198 struct sun4i_layer *layer; 199 int ret; 200 201 layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL); 202 if (!layer) 203 return ERR_PTR(-ENOMEM); 204 205 layer->id = id; 206 layer->backend = backend; 207 208 if (IS_ERR_OR_NULL(backend->frontend)) { 209 formats = sun4i_backend_layer_formats; 210 formats_len = ARRAY_SIZE(sun4i_backend_layer_formats); 211 modifiers = NULL; 212 } 213 214 /* possible crtcs are set later */ 215 ret = drm_universal_plane_init(drm, &layer->plane, 0, 216 &sun4i_backend_layer_funcs, 217 formats, formats_len, 218 modifiers, type, NULL); 219 if (ret) { 220 dev_err(drm->dev, "Couldn't initialize layer\n"); 221 return ERR_PTR(ret); 222 } 223 224 drm_plane_helper_add(&layer->plane, 225 &sun4i_backend_layer_helper_funcs); 226 227 drm_plane_create_alpha_property(&layer->plane); 228 drm_plane_create_zpos_property(&layer->plane, layer->id, 229 0, SUN4I_BACKEND_NUM_LAYERS - 1); 230 231 return layer; 232 } 233 234 struct drm_plane **sun4i_layers_init(struct drm_device *drm, 235 struct sunxi_engine *engine) 236 { 237 struct drm_plane **planes; 238 struct sun4i_backend *backend = engine_to_sun4i_backend(engine); 239 int i; 240 241 /* We need to have a sentinel at the need, hence the overallocation */ 242 planes = devm_kcalloc(drm->dev, SUN4I_BACKEND_NUM_LAYERS + 1, 243 sizeof(*planes), GFP_KERNEL); 244 if (!planes) 245 return ERR_PTR(-ENOMEM); 246 247 for (i = 0; i < SUN4I_BACKEND_NUM_LAYERS; i++) { 248 enum drm_plane_type type = i ? DRM_PLANE_TYPE_OVERLAY : DRM_PLANE_TYPE_PRIMARY; 249 struct sun4i_layer *layer; 250 251 layer = sun4i_layer_init_one(drm, backend, type, i); 252 if (IS_ERR(layer)) { 253 dev_err(drm->dev, "Couldn't initialize %s plane\n", 254 i ? "overlay" : "primary"); 255 return ERR_CAST(layer); 256 } 257 258 planes[i] = &layer->plane; 259 } 260 261 return planes; 262 } 263