1 /* 2 * drivers/gpu/drm/omapdrm/omap_plane.c 3 * 4 * Copyright (C) 2011 Texas Instruments 5 * Author: Rob Clark <rob.clark@linaro.org> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License version 2 as published by 9 * the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 14 * more details. 15 * 16 * You should have received a copy of the GNU General Public License along with 17 * this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include <drm/drm_atomic.h> 21 #include <drm/drm_atomic_helper.h> 22 #include <drm/drm_plane_helper.h> 23 24 #include "omap_dmm_tiler.h" 25 #include "omap_drv.h" 26 27 /* some hackery because omapdss has an 'enum omap_plane' (which would be 28 * better named omap_plane_id).. and compiler seems unhappy about having 29 * both a 'struct omap_plane' and 'enum omap_plane' 30 */ 31 #define omap_plane _omap_plane 32 33 /* 34 * plane funcs 35 */ 36 37 #define to_omap_plane(x) container_of(x, struct omap_plane, base) 38 39 struct omap_plane { 40 struct drm_plane base; 41 int id; /* TODO rename omap_plane -> omap_plane_id in omapdss so I can use the enum */ 42 const char *name; 43 44 uint32_t nformats; 45 uint32_t formats[32]; 46 47 struct omap_drm_irq error_irq; 48 }; 49 50 struct omap_plane_state { 51 struct drm_plane_state base; 52 53 unsigned int zorder; 54 }; 55 56 static inline struct omap_plane_state * 57 to_omap_plane_state(struct drm_plane_state *state) 58 { 59 return container_of(state, struct omap_plane_state, base); 60 } 61 62 static int omap_plane_prepare_fb(struct drm_plane *plane, 63 struct drm_plane_state *new_state) 64 { 65 if (!new_state->fb) 66 return 0; 67 68 return omap_framebuffer_pin(new_state->fb); 69 } 70 71 static void omap_plane_cleanup_fb(struct drm_plane *plane, 72 struct drm_plane_state *old_state) 73 { 74 if (old_state->fb) 75 omap_framebuffer_unpin(old_state->fb); 76 } 77 78 static void omap_plane_atomic_update(struct drm_plane *plane, 79 struct drm_plane_state *old_state) 80 { 81 struct omap_plane *omap_plane = to_omap_plane(plane); 82 struct drm_plane_state *state = plane->state; 83 struct omap_plane_state *omap_state = to_omap_plane_state(state); 84 struct omap_overlay_info info; 85 struct omap_drm_window win; 86 int ret; 87 88 DBG("%s, crtc=%p fb=%p", omap_plane->name, state->crtc, state->fb); 89 90 memset(&info, 0, sizeof(info)); 91 info.rotation_type = OMAP_DSS_ROT_DMA; 92 info.rotation = OMAP_DSS_ROT_0; 93 info.global_alpha = 0xff; 94 info.mirror = 0; 95 info.zorder = omap_state->zorder; 96 97 memset(&win, 0, sizeof(win)); 98 win.rotation = state->rotation; 99 win.crtc_x = state->crtc_x; 100 win.crtc_y = state->crtc_y; 101 win.crtc_w = state->crtc_w; 102 win.crtc_h = state->crtc_h; 103 104 /* 105 * src values are in Q16 fixed point, convert to integer. 106 * omap_framebuffer_update_scanout() takes adjusted src. 107 */ 108 win.src_x = state->src_x >> 16; 109 win.src_y = state->src_y >> 16; 110 111 if (drm_rotation_90_or_270(state->rotation)) { 112 win.src_w = state->src_h >> 16; 113 win.src_h = state->src_w >> 16; 114 } else { 115 win.src_w = state->src_w >> 16; 116 win.src_h = state->src_h >> 16; 117 } 118 119 /* update scanout: */ 120 omap_framebuffer_update_scanout(state->fb, &win, &info); 121 122 DBG("%dx%d -> %dx%d (%d)", info.width, info.height, 123 info.out_width, info.out_height, 124 info.screen_width); 125 DBG("%d,%d %pad %pad", info.pos_x, info.pos_y, 126 &info.paddr, &info.p_uv_addr); 127 128 dispc_ovl_set_channel_out(omap_plane->id, 129 omap_crtc_channel(state->crtc)); 130 131 /* and finally, update omapdss: */ 132 ret = dispc_ovl_setup(omap_plane->id, &info, false, 133 omap_crtc_timings(state->crtc), false); 134 if (ret) { 135 dev_err(plane->dev->dev, "Failed to setup plane %s\n", 136 omap_plane->name); 137 dispc_ovl_enable(omap_plane->id, false); 138 return; 139 } 140 141 dispc_ovl_enable(omap_plane->id, true); 142 } 143 144 static void omap_plane_atomic_disable(struct drm_plane *plane, 145 struct drm_plane_state *old_state) 146 { 147 struct omap_plane_state *omap_state = to_omap_plane_state(plane->state); 148 struct omap_plane *omap_plane = to_omap_plane(plane); 149 150 plane->state->rotation = DRM_ROTATE_0; 151 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY 152 ? 0 : omap_plane->id; 153 154 dispc_ovl_enable(omap_plane->id, false); 155 } 156 157 static int omap_plane_atomic_check(struct drm_plane *plane, 158 struct drm_plane_state *state) 159 { 160 struct drm_crtc_state *crtc_state; 161 162 if (!state->fb) 163 return 0; 164 165 /* crtc should only be NULL when disabling (i.e., !state->fb) */ 166 if (WARN_ON(!state->crtc)) 167 return 0; 168 169 crtc_state = drm_atomic_get_existing_crtc_state(state->state, state->crtc); 170 /* we should have a crtc state if the plane is attached to a crtc */ 171 if (WARN_ON(!crtc_state)) 172 return 0; 173 174 if (!crtc_state->enable) 175 return 0; 176 177 if (state->crtc_x < 0 || state->crtc_y < 0) 178 return -EINVAL; 179 180 if (state->crtc_x + state->crtc_w > crtc_state->adjusted_mode.hdisplay) 181 return -EINVAL; 182 183 if (state->crtc_y + state->crtc_h > crtc_state->adjusted_mode.vdisplay) 184 return -EINVAL; 185 186 if (state->rotation != DRM_ROTATE_0 && 187 !omap_framebuffer_supports_rotation(state->fb)) 188 return -EINVAL; 189 190 return 0; 191 } 192 193 static const struct drm_plane_helper_funcs omap_plane_helper_funcs = { 194 .prepare_fb = omap_plane_prepare_fb, 195 .cleanup_fb = omap_plane_cleanup_fb, 196 .atomic_check = omap_plane_atomic_check, 197 .atomic_update = omap_plane_atomic_update, 198 .atomic_disable = omap_plane_atomic_disable, 199 }; 200 201 static void omap_plane_destroy(struct drm_plane *plane) 202 { 203 struct omap_plane *omap_plane = to_omap_plane(plane); 204 205 DBG("%s", omap_plane->name); 206 207 omap_irq_unregister(plane->dev, &omap_plane->error_irq); 208 209 drm_plane_cleanup(plane); 210 211 kfree(omap_plane); 212 } 213 214 /* helper to install properties which are common to planes and crtcs */ 215 void omap_plane_install_properties(struct drm_plane *plane, 216 struct drm_mode_object *obj) 217 { 218 struct drm_device *dev = plane->dev; 219 struct omap_drm_private *priv = dev->dev_private; 220 221 if (priv->has_dmm) { 222 if (!plane->rotation_property) 223 drm_plane_create_rotation_property(plane, 224 DRM_ROTATE_0, 225 DRM_ROTATE_0 | DRM_ROTATE_90 | 226 DRM_ROTATE_180 | DRM_ROTATE_270 | 227 DRM_REFLECT_X | DRM_REFLECT_Y); 228 229 /* Attach the rotation property also to the crtc object */ 230 if (plane->rotation_property && obj != &plane->base) 231 drm_object_attach_property(obj, plane->rotation_property, 232 DRM_ROTATE_0); 233 } 234 235 drm_object_attach_property(obj, priv->zorder_prop, 0); 236 } 237 238 static struct drm_plane_state * 239 omap_plane_atomic_duplicate_state(struct drm_plane *plane) 240 { 241 struct omap_plane_state *state; 242 struct omap_plane_state *copy; 243 244 if (WARN_ON(!plane->state)) 245 return NULL; 246 247 state = to_omap_plane_state(plane->state); 248 copy = kmemdup(state, sizeof(*state), GFP_KERNEL); 249 if (copy == NULL) 250 return NULL; 251 252 __drm_atomic_helper_plane_duplicate_state(plane, ©->base); 253 254 return ©->base; 255 } 256 257 static void omap_plane_atomic_destroy_state(struct drm_plane *plane, 258 struct drm_plane_state *state) 259 { 260 __drm_atomic_helper_plane_destroy_state(state); 261 kfree(to_omap_plane_state(state)); 262 } 263 264 static void omap_plane_reset(struct drm_plane *plane) 265 { 266 struct omap_plane *omap_plane = to_omap_plane(plane); 267 struct omap_plane_state *omap_state; 268 269 if (plane->state) { 270 omap_plane_atomic_destroy_state(plane, plane->state); 271 plane->state = NULL; 272 } 273 274 omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL); 275 if (omap_state == NULL) 276 return; 277 278 /* 279 * Set defaults depending on whether we are a primary or overlay 280 * plane. 281 */ 282 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY 283 ? 0 : omap_plane->id; 284 omap_state->base.rotation = DRM_ROTATE_0; 285 286 plane->state = &omap_state->base; 287 plane->state->plane = plane; 288 } 289 290 static int omap_plane_atomic_set_property(struct drm_plane *plane, 291 struct drm_plane_state *state, 292 struct drm_property *property, 293 uint64_t val) 294 { 295 struct omap_drm_private *priv = plane->dev->dev_private; 296 struct omap_plane_state *omap_state = to_omap_plane_state(state); 297 298 if (property == priv->zorder_prop) 299 omap_state->zorder = val; 300 else 301 return -EINVAL; 302 303 return 0; 304 } 305 306 static int omap_plane_atomic_get_property(struct drm_plane *plane, 307 const struct drm_plane_state *state, 308 struct drm_property *property, 309 uint64_t *val) 310 { 311 struct omap_drm_private *priv = plane->dev->dev_private; 312 const struct omap_plane_state *omap_state = 313 container_of(state, const struct omap_plane_state, base); 314 315 if (property == priv->zorder_prop) 316 *val = omap_state->zorder; 317 else 318 return -EINVAL; 319 320 return 0; 321 } 322 323 static const struct drm_plane_funcs omap_plane_funcs = { 324 .update_plane = drm_atomic_helper_update_plane, 325 .disable_plane = drm_atomic_helper_disable_plane, 326 .reset = omap_plane_reset, 327 .destroy = omap_plane_destroy, 328 .set_property = drm_atomic_helper_plane_set_property, 329 .atomic_duplicate_state = omap_plane_atomic_duplicate_state, 330 .atomic_destroy_state = omap_plane_atomic_destroy_state, 331 .atomic_set_property = omap_plane_atomic_set_property, 332 .atomic_get_property = omap_plane_atomic_get_property, 333 }; 334 335 static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus) 336 { 337 struct omap_plane *omap_plane = 338 container_of(irq, struct omap_plane, error_irq); 339 DRM_ERROR_RATELIMITED("%s: errors: %08x\n", omap_plane->name, 340 irqstatus); 341 } 342 343 static const char *plane_names[] = { 344 [OMAP_DSS_GFX] = "gfx", 345 [OMAP_DSS_VIDEO1] = "vid1", 346 [OMAP_DSS_VIDEO2] = "vid2", 347 [OMAP_DSS_VIDEO3] = "vid3", 348 }; 349 350 static const uint32_t error_irqs[] = { 351 [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW, 352 [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW, 353 [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW, 354 [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW, 355 }; 356 357 /* initialize plane */ 358 struct drm_plane *omap_plane_init(struct drm_device *dev, 359 int id, enum drm_plane_type type) 360 { 361 struct omap_drm_private *priv = dev->dev_private; 362 struct drm_plane *plane; 363 struct omap_plane *omap_plane; 364 int ret; 365 366 DBG("%s: type=%d", plane_names[id], type); 367 368 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL); 369 if (!omap_plane) 370 return ERR_PTR(-ENOMEM); 371 372 omap_plane->nformats = omap_framebuffer_get_formats( 373 omap_plane->formats, ARRAY_SIZE(omap_plane->formats), 374 dss_feat_get_supported_color_modes(id)); 375 omap_plane->id = id; 376 omap_plane->name = plane_names[id]; 377 378 plane = &omap_plane->base; 379 380 omap_plane->error_irq.irqmask = error_irqs[id]; 381 omap_plane->error_irq.irq = omap_plane_error_irq; 382 omap_irq_register(dev, &omap_plane->error_irq); 383 384 ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1, 385 &omap_plane_funcs, omap_plane->formats, 386 omap_plane->nformats, type, NULL); 387 if (ret < 0) 388 goto error; 389 390 drm_plane_helper_add(plane, &omap_plane_helper_funcs); 391 392 omap_plane_install_properties(plane, &plane->base); 393 394 return plane; 395 396 error: 397 omap_irq_unregister(plane->dev, &omap_plane->error_irq); 398 kfree(omap_plane); 399 return NULL; 400 } 401