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 const 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 const 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 switch (state->rotation & DRM_ROTATE_MASK) { 112 case BIT(DRM_ROTATE_90): 113 case BIT(DRM_ROTATE_270): 114 win.src_w = state->src_h >> 16; 115 win.src_h = state->src_w >> 16; 116 break; 117 default: 118 win.src_w = state->src_w >> 16; 119 win.src_h = state->src_h >> 16; 120 break; 121 } 122 123 /* update scanout: */ 124 omap_framebuffer_update_scanout(state->fb, &win, &info); 125 126 DBG("%dx%d -> %dx%d (%d)", info.width, info.height, 127 info.out_width, info.out_height, 128 info.screen_width); 129 DBG("%d,%d %pad %pad", info.pos_x, info.pos_y, 130 &info.paddr, &info.p_uv_addr); 131 132 dispc_ovl_set_channel_out(omap_plane->id, 133 omap_crtc_channel(state->crtc)); 134 135 /* and finally, update omapdss: */ 136 ret = dispc_ovl_setup(omap_plane->id, &info, false, 137 omap_crtc_timings(state->crtc), false); 138 if (WARN_ON(ret)) { 139 dispc_ovl_enable(omap_plane->id, false); 140 return; 141 } 142 143 dispc_ovl_enable(omap_plane->id, true); 144 } 145 146 static void omap_plane_atomic_disable(struct drm_plane *plane, 147 struct drm_plane_state *old_state) 148 { 149 struct omap_plane_state *omap_state = to_omap_plane_state(plane->state); 150 struct omap_plane *omap_plane = to_omap_plane(plane); 151 152 plane->state->rotation = BIT(DRM_ROTATE_0); 153 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY 154 ? 0 : omap_plane->id; 155 156 dispc_ovl_enable(omap_plane->id, false); 157 } 158 159 static int omap_plane_atomic_check(struct drm_plane *plane, 160 struct drm_plane_state *state) 161 { 162 struct drm_crtc_state *crtc_state; 163 164 if (!state->crtc) 165 return 0; 166 167 crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); 168 if (IS_ERR(crtc_state)) 169 return PTR_ERR(crtc_state); 170 171 if (state->crtc_x < 0 || state->crtc_y < 0) 172 return -EINVAL; 173 174 if (state->crtc_x + state->crtc_w > crtc_state->adjusted_mode.hdisplay) 175 return -EINVAL; 176 177 if (state->crtc_y + state->crtc_h > crtc_state->adjusted_mode.vdisplay) 178 return -EINVAL; 179 180 if (state->fb) { 181 if (state->rotation != BIT(DRM_ROTATE_0) && 182 !omap_framebuffer_supports_rotation(state->fb)) 183 return -EINVAL; 184 } 185 186 return 0; 187 } 188 189 static const struct drm_plane_helper_funcs omap_plane_helper_funcs = { 190 .prepare_fb = omap_plane_prepare_fb, 191 .cleanup_fb = omap_plane_cleanup_fb, 192 .atomic_check = omap_plane_atomic_check, 193 .atomic_update = omap_plane_atomic_update, 194 .atomic_disable = omap_plane_atomic_disable, 195 }; 196 197 static void omap_plane_destroy(struct drm_plane *plane) 198 { 199 struct omap_plane *omap_plane = to_omap_plane(plane); 200 201 DBG("%s", omap_plane->name); 202 203 omap_irq_unregister(plane->dev, &omap_plane->error_irq); 204 205 drm_plane_cleanup(plane); 206 207 kfree(omap_plane); 208 } 209 210 /* helper to install properties which are common to planes and crtcs */ 211 void omap_plane_install_properties(struct drm_plane *plane, 212 struct drm_mode_object *obj) 213 { 214 struct drm_device *dev = plane->dev; 215 struct omap_drm_private *priv = dev->dev_private; 216 217 if (priv->has_dmm) { 218 struct drm_property *prop = dev->mode_config.rotation_property; 219 220 drm_object_attach_property(obj, prop, 0); 221 } 222 223 drm_object_attach_property(obj, priv->zorder_prop, 0); 224 } 225 226 static struct drm_plane_state * 227 omap_plane_atomic_duplicate_state(struct drm_plane *plane) 228 { 229 struct omap_plane_state *state; 230 struct omap_plane_state *copy; 231 232 if (WARN_ON(!plane->state)) 233 return NULL; 234 235 state = to_omap_plane_state(plane->state); 236 copy = kmemdup(state, sizeof(*state), GFP_KERNEL); 237 if (copy == NULL) 238 return NULL; 239 240 __drm_atomic_helper_plane_duplicate_state(plane, ©->base); 241 242 return ©->base; 243 } 244 245 static void omap_plane_atomic_destroy_state(struct drm_plane *plane, 246 struct drm_plane_state *state) 247 { 248 __drm_atomic_helper_plane_destroy_state(state); 249 kfree(to_omap_plane_state(state)); 250 } 251 252 static void omap_plane_reset(struct drm_plane *plane) 253 { 254 struct omap_plane *omap_plane = to_omap_plane(plane); 255 struct omap_plane_state *omap_state; 256 257 if (plane->state) { 258 omap_plane_atomic_destroy_state(plane, plane->state); 259 plane->state = NULL; 260 } 261 262 omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL); 263 if (omap_state == NULL) 264 return; 265 266 /* 267 * Set defaults depending on whether we are a primary or overlay 268 * plane. 269 */ 270 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY 271 ? 0 : omap_plane->id; 272 omap_state->base.rotation = BIT(DRM_ROTATE_0); 273 274 plane->state = &omap_state->base; 275 plane->state->plane = plane; 276 } 277 278 static int omap_plane_atomic_set_property(struct drm_plane *plane, 279 struct drm_plane_state *state, 280 struct drm_property *property, 281 uint64_t val) 282 { 283 struct omap_drm_private *priv = plane->dev->dev_private; 284 struct omap_plane_state *omap_state = to_omap_plane_state(state); 285 286 if (property == priv->zorder_prop) 287 omap_state->zorder = val; 288 else 289 return -EINVAL; 290 291 return 0; 292 } 293 294 static int omap_plane_atomic_get_property(struct drm_plane *plane, 295 const struct drm_plane_state *state, 296 struct drm_property *property, 297 uint64_t *val) 298 { 299 struct omap_drm_private *priv = plane->dev->dev_private; 300 const struct omap_plane_state *omap_state = 301 container_of(state, const struct omap_plane_state, base); 302 303 if (property == priv->zorder_prop) 304 *val = omap_state->zorder; 305 else 306 return -EINVAL; 307 308 return 0; 309 } 310 311 static const struct drm_plane_funcs omap_plane_funcs = { 312 .update_plane = drm_atomic_helper_update_plane, 313 .disable_plane = drm_atomic_helper_disable_plane, 314 .reset = omap_plane_reset, 315 .destroy = omap_plane_destroy, 316 .set_property = drm_atomic_helper_plane_set_property, 317 .atomic_duplicate_state = omap_plane_atomic_duplicate_state, 318 .atomic_destroy_state = omap_plane_atomic_destroy_state, 319 .atomic_set_property = omap_plane_atomic_set_property, 320 .atomic_get_property = omap_plane_atomic_get_property, 321 }; 322 323 static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus) 324 { 325 struct omap_plane *omap_plane = 326 container_of(irq, struct omap_plane, error_irq); 327 DRM_ERROR_RATELIMITED("%s: errors: %08x\n", omap_plane->name, 328 irqstatus); 329 } 330 331 static const char *plane_names[] = { 332 [OMAP_DSS_GFX] = "gfx", 333 [OMAP_DSS_VIDEO1] = "vid1", 334 [OMAP_DSS_VIDEO2] = "vid2", 335 [OMAP_DSS_VIDEO3] = "vid3", 336 }; 337 338 static const uint32_t error_irqs[] = { 339 [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW, 340 [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW, 341 [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW, 342 [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW, 343 }; 344 345 /* initialize plane */ 346 struct drm_plane *omap_plane_init(struct drm_device *dev, 347 int id, enum drm_plane_type type) 348 { 349 struct omap_drm_private *priv = dev->dev_private; 350 struct drm_plane *plane; 351 struct omap_plane *omap_plane; 352 int ret; 353 354 DBG("%s: type=%d", plane_names[id], type); 355 356 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL); 357 if (!omap_plane) 358 return ERR_PTR(-ENOMEM); 359 360 omap_plane->nformats = omap_framebuffer_get_formats( 361 omap_plane->formats, ARRAY_SIZE(omap_plane->formats), 362 dss_feat_get_supported_color_modes(id)); 363 omap_plane->id = id; 364 omap_plane->name = plane_names[id]; 365 366 plane = &omap_plane->base; 367 368 omap_plane->error_irq.irqmask = error_irqs[id]; 369 omap_plane->error_irq.irq = omap_plane_error_irq; 370 omap_irq_register(dev, &omap_plane->error_irq); 371 372 ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1, 373 &omap_plane_funcs, omap_plane->formats, 374 omap_plane->nformats, type, NULL); 375 if (ret < 0) 376 goto error; 377 378 drm_plane_helper_add(plane, &omap_plane_helper_funcs); 379 380 omap_plane_install_properties(plane, &plane->base); 381 382 return plane; 383 384 error: 385 omap_irq_unregister(plane->dev, &omap_plane->error_irq); 386 kfree(omap_plane); 387 return NULL; 388 } 389