1 /* 2 * drivers/gpu/drm/omapdrm/omap_fb.c 3 * 4 * Copyright (C) 2011 Texas Instruments 5 * Author: Rob Clark <rob@ti.com> 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 "omap_drv.h" 21 #include "omap_dmm_tiler.h" 22 23 #include "drm_crtc.h" 24 #include "drm_crtc_helper.h" 25 26 /* 27 * framebuffer funcs 28 */ 29 30 /* per-format info: */ 31 struct format { 32 enum omap_color_mode dss_format; 33 uint32_t pixel_format; 34 struct { 35 int stride_bpp; /* this times width is stride */ 36 int sub_y; /* sub-sample in y dimension */ 37 } planes[4]; 38 bool yuv; 39 }; 40 41 static const struct format formats[] = { 42 /* 16bpp [A]RGB: */ 43 { OMAP_DSS_COLOR_RGB16, DRM_FORMAT_RGB565, {{2, 1}}, false }, /* RGB16-565 */ 44 { OMAP_DSS_COLOR_RGB12U, DRM_FORMAT_RGBX4444, {{2, 1}}, false }, /* RGB12x-4444 */ 45 { OMAP_DSS_COLOR_RGBX16, DRM_FORMAT_XRGB4444, {{2, 1}}, false }, /* xRGB12-4444 */ 46 { OMAP_DSS_COLOR_RGBA16, DRM_FORMAT_RGBA4444, {{2, 1}}, false }, /* RGBA12-4444 */ 47 { OMAP_DSS_COLOR_ARGB16, DRM_FORMAT_ARGB4444, {{2, 1}}, false }, /* ARGB16-4444 */ 48 { OMAP_DSS_COLOR_XRGB16_1555, DRM_FORMAT_XRGB1555, {{2, 1}}, false }, /* xRGB15-1555 */ 49 { OMAP_DSS_COLOR_ARGB16_1555, DRM_FORMAT_ARGB1555, {{2, 1}}, false }, /* ARGB16-1555 */ 50 /* 24bpp RGB: */ 51 { OMAP_DSS_COLOR_RGB24P, DRM_FORMAT_RGB888, {{3, 1}}, false }, /* RGB24-888 */ 52 /* 32bpp [A]RGB: */ 53 { OMAP_DSS_COLOR_RGBX32, DRM_FORMAT_RGBX8888, {{4, 1}}, false }, /* RGBx24-8888 */ 54 { OMAP_DSS_COLOR_RGB24U, DRM_FORMAT_XRGB8888, {{4, 1}}, false }, /* xRGB24-8888 */ 55 { OMAP_DSS_COLOR_RGBA32, DRM_FORMAT_RGBA8888, {{4, 1}}, false }, /* RGBA32-8888 */ 56 { OMAP_DSS_COLOR_ARGB32, DRM_FORMAT_ARGB8888, {{4, 1}}, false }, /* ARGB32-8888 */ 57 /* YUV: */ 58 { OMAP_DSS_COLOR_NV12, DRM_FORMAT_NV12, {{1, 1}, {1, 2}}, true }, 59 { OMAP_DSS_COLOR_YUV2, DRM_FORMAT_YUYV, {{2, 1}}, true }, 60 { OMAP_DSS_COLOR_UYVY, DRM_FORMAT_UYVY, {{2, 1}}, true }, 61 }; 62 63 /* convert from overlay's pixel formats bitmask to an array of fourcc's */ 64 uint32_t omap_framebuffer_get_formats(uint32_t *pixel_formats, 65 uint32_t max_formats, enum omap_color_mode supported_modes) 66 { 67 uint32_t nformats = 0; 68 int i = 0; 69 70 for (i = 0; i < ARRAY_SIZE(formats) && nformats < max_formats; i++) 71 if (formats[i].dss_format & supported_modes) 72 pixel_formats[nformats++] = formats[i].pixel_format; 73 74 return nformats; 75 } 76 77 /* per-plane info for the fb: */ 78 struct plane { 79 struct drm_gem_object *bo; 80 uint32_t pitch; 81 uint32_t offset; 82 dma_addr_t paddr; 83 }; 84 85 #define to_omap_framebuffer(x) container_of(x, struct omap_framebuffer, base) 86 87 struct omap_framebuffer { 88 struct drm_framebuffer base; 89 const struct format *format; 90 struct plane planes[4]; 91 }; 92 93 static int omap_framebuffer_create_handle(struct drm_framebuffer *fb, 94 struct drm_file *file_priv, 95 unsigned int *handle) 96 { 97 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 98 return drm_gem_handle_create(file_priv, 99 omap_fb->planes[0].bo, handle); 100 } 101 102 static void omap_framebuffer_destroy(struct drm_framebuffer *fb) 103 { 104 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 105 int i, n = drm_format_num_planes(fb->pixel_format); 106 107 DBG("destroy: FB ID: %d (%p)", fb->base.id, fb); 108 109 drm_framebuffer_cleanup(fb); 110 111 for (i = 0; i < n; i++) { 112 struct plane *plane = &omap_fb->planes[i]; 113 if (plane->bo) 114 drm_gem_object_unreference_unlocked(plane->bo); 115 } 116 117 kfree(omap_fb); 118 } 119 120 static int omap_framebuffer_dirty(struct drm_framebuffer *fb, 121 struct drm_file *file_priv, unsigned flags, unsigned color, 122 struct drm_clip_rect *clips, unsigned num_clips) 123 { 124 int i; 125 126 for (i = 0; i < num_clips; i++) { 127 omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1, 128 clips[i].x2 - clips[i].x1, 129 clips[i].y2 - clips[i].y1); 130 } 131 132 return 0; 133 } 134 135 static const struct drm_framebuffer_funcs omap_framebuffer_funcs = { 136 .create_handle = omap_framebuffer_create_handle, 137 .destroy = omap_framebuffer_destroy, 138 .dirty = omap_framebuffer_dirty, 139 }; 140 141 static uint32_t get_linear_addr(struct plane *plane, 142 const struct format *format, int n, int x, int y) 143 { 144 uint32_t offset; 145 146 offset = plane->offset + 147 (x * format->planes[n].stride_bpp) + 148 (y * plane->pitch / format->planes[n].sub_y); 149 150 return plane->paddr + offset; 151 } 152 153 /* update ovl info for scanout, handles cases of multi-planar fb's, etc. 154 */ 155 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb, 156 struct omap_drm_window *win, struct omap_overlay_info *info) 157 { 158 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 159 const struct format *format = omap_fb->format; 160 struct plane *plane = &omap_fb->planes[0]; 161 uint32_t x, y, orient = 0; 162 163 info->color_mode = format->dss_format; 164 165 info->pos_x = win->crtc_x; 166 info->pos_y = win->crtc_y; 167 info->out_width = win->crtc_w; 168 info->out_height = win->crtc_h; 169 info->width = win->src_w; 170 info->height = win->src_h; 171 172 x = win->src_x; 173 y = win->src_y; 174 175 if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) { 176 uint32_t w = win->src_w; 177 uint32_t h = win->src_h; 178 179 switch (win->rotation & 0xf) { 180 default: 181 dev_err(fb->dev->dev, "invalid rotation: %02x", 182 (uint32_t)win->rotation); 183 /* fallthru to default to no rotation */ 184 case 0: 185 case BIT(DRM_ROTATE_0): 186 orient = 0; 187 break; 188 case BIT(DRM_ROTATE_90): 189 orient = MASK_XY_FLIP | MASK_X_INVERT; 190 break; 191 case BIT(DRM_ROTATE_180): 192 orient = MASK_X_INVERT | MASK_Y_INVERT; 193 break; 194 case BIT(DRM_ROTATE_270): 195 orient = MASK_XY_FLIP | MASK_Y_INVERT; 196 break; 197 } 198 199 if (win->rotation & BIT(DRM_REFLECT_X)) 200 orient ^= MASK_X_INVERT; 201 202 if (win->rotation & BIT(DRM_REFLECT_Y)) 203 orient ^= MASK_Y_INVERT; 204 205 /* adjust x,y offset for flip/invert: */ 206 if (orient & MASK_XY_FLIP) 207 swap(w, h); 208 if (orient & MASK_Y_INVERT) 209 y += h - 1; 210 if (orient & MASK_X_INVERT) 211 x += w - 1; 212 213 omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr); 214 info->rotation_type = OMAP_DSS_ROT_TILER; 215 info->screen_width = omap_gem_tiled_stride(plane->bo, orient); 216 } else { 217 info->paddr = get_linear_addr(plane, format, 0, x, y); 218 info->rotation_type = OMAP_DSS_ROT_DMA; 219 info->screen_width = plane->pitch; 220 } 221 222 /* convert to pixels: */ 223 info->screen_width /= format->planes[0].stride_bpp; 224 225 if (format->dss_format == OMAP_DSS_COLOR_NV12) { 226 plane = &omap_fb->planes[1]; 227 228 if (info->rotation_type == OMAP_DSS_ROT_TILER) { 229 WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED)); 230 omap_gem_rotated_paddr(plane->bo, orient, 231 x/2, y/2, &info->p_uv_addr); 232 } else { 233 info->p_uv_addr = get_linear_addr(plane, format, 1, x, y); 234 } 235 } else { 236 info->p_uv_addr = 0; 237 } 238 } 239 240 /* Call for unpin 'a' (if not NULL), and pin 'b' (if not NULL). Although 241 * buffers to unpin are just pushed to the unpin fifo so that the 242 * caller can defer unpin until vblank. 243 * 244 * Note if this fails (ie. something went very wrong!), all buffers are 245 * unpinned, and the caller disables the overlay. We could have tried 246 * to revert back to the previous set of pinned buffers but if things are 247 * hosed there is no guarantee that would succeed. 248 */ 249 int omap_framebuffer_replace(struct drm_framebuffer *a, 250 struct drm_framebuffer *b, void *arg, 251 void (*unpin)(void *arg, struct drm_gem_object *bo)) 252 { 253 int ret = 0, i, na, nb; 254 struct omap_framebuffer *ofba = to_omap_framebuffer(a); 255 struct omap_framebuffer *ofbb = to_omap_framebuffer(b); 256 uint32_t pinned_mask = 0; 257 258 na = a ? drm_format_num_planes(a->pixel_format) : 0; 259 nb = b ? drm_format_num_planes(b->pixel_format) : 0; 260 261 for (i = 0; i < max(na, nb); i++) { 262 struct plane *pa, *pb; 263 264 pa = (i < na) ? &ofba->planes[i] : NULL; 265 pb = (i < nb) ? &ofbb->planes[i] : NULL; 266 267 if (pa) 268 unpin(arg, pa->bo); 269 270 if (pb && !ret) { 271 ret = omap_gem_get_paddr(pb->bo, &pb->paddr, true); 272 if (!ret) { 273 omap_gem_dma_sync(pb->bo, DMA_TO_DEVICE); 274 pinned_mask |= (1 << i); 275 } 276 } 277 } 278 279 if (ret) { 280 /* something went wrong.. unpin what has been pinned */ 281 for (i = 0; i < nb; i++) { 282 if (pinned_mask & (1 << i)) { 283 struct plane *pb = &ofba->planes[i]; 284 unpin(arg, pb->bo); 285 } 286 } 287 } 288 289 return ret; 290 } 291 292 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p) 293 { 294 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 295 if (p >= drm_format_num_planes(fb->pixel_format)) 296 return NULL; 297 return omap_fb->planes[p].bo; 298 } 299 300 /* iterate thru all the connectors, returning ones that are attached 301 * to the same fb.. 302 */ 303 struct drm_connector *omap_framebuffer_get_next_connector( 304 struct drm_framebuffer *fb, struct drm_connector *from) 305 { 306 struct drm_device *dev = fb->dev; 307 struct list_head *connector_list = &dev->mode_config.connector_list; 308 struct drm_connector *connector = from; 309 310 if (!from) 311 return list_first_entry(connector_list, typeof(*from), head); 312 313 list_for_each_entry_from(connector, connector_list, head) { 314 if (connector != from) { 315 struct drm_encoder *encoder = connector->encoder; 316 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; 317 if (crtc && crtc->fb == fb) 318 return connector; 319 320 } 321 } 322 323 return NULL; 324 } 325 326 /* flush an area of the framebuffer (in case of manual update display that 327 * is not automatically flushed) 328 */ 329 void omap_framebuffer_flush(struct drm_framebuffer *fb, 330 int x, int y, int w, int h) 331 { 332 struct drm_connector *connector = NULL; 333 334 VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb); 335 336 while ((connector = omap_framebuffer_get_next_connector(fb, connector))) { 337 /* only consider connectors that are part of a chain */ 338 if (connector->encoder && connector->encoder->crtc) { 339 /* TODO: maybe this should propagate thru the crtc who 340 * could do the coordinate translation.. 341 */ 342 struct drm_crtc *crtc = connector->encoder->crtc; 343 int cx = max(0, x - crtc->x); 344 int cy = max(0, y - crtc->y); 345 int cw = w + (x - crtc->x) - cx; 346 int ch = h + (y - crtc->y) - cy; 347 348 omap_connector_flush(connector, cx, cy, cw, ch); 349 } 350 } 351 } 352 353 #ifdef CONFIG_DEBUG_FS 354 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m) 355 { 356 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 357 int i, n = drm_format_num_planes(fb->pixel_format); 358 359 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height, 360 (char *)&fb->pixel_format); 361 362 for (i = 0; i < n; i++) { 363 struct plane *plane = &omap_fb->planes[i]; 364 seq_printf(m, " %d: offset=%d pitch=%d, obj: ", 365 i, plane->offset, plane->pitch); 366 omap_gem_describe(plane->bo, m); 367 } 368 } 369 #endif 370 371 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev, 372 struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd) 373 { 374 struct drm_gem_object *bos[4]; 375 struct drm_framebuffer *fb; 376 int ret; 377 378 ret = objects_lookup(dev, file, mode_cmd->pixel_format, 379 bos, mode_cmd->handles); 380 if (ret) 381 return ERR_PTR(ret); 382 383 fb = omap_framebuffer_init(dev, mode_cmd, bos); 384 if (IS_ERR(fb)) { 385 int i, n = drm_format_num_planes(mode_cmd->pixel_format); 386 for (i = 0; i < n; i++) 387 drm_gem_object_unreference_unlocked(bos[i]); 388 return fb; 389 } 390 return fb; 391 } 392 393 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, 394 struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos) 395 { 396 struct omap_framebuffer *omap_fb; 397 struct drm_framebuffer *fb = NULL; 398 const struct format *format = NULL; 399 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format); 400 401 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)", 402 dev, mode_cmd, mode_cmd->width, mode_cmd->height, 403 (char *)&mode_cmd->pixel_format); 404 405 for (i = 0; i < ARRAY_SIZE(formats); i++) { 406 if (formats[i].pixel_format == mode_cmd->pixel_format) { 407 format = &formats[i]; 408 break; 409 } 410 } 411 412 if (!format) { 413 dev_err(dev->dev, "unsupported pixel format: %4.4s\n", 414 (char *)&mode_cmd->pixel_format); 415 ret = -EINVAL; 416 goto fail; 417 } 418 419 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL); 420 if (!omap_fb) { 421 ret = -ENOMEM; 422 goto fail; 423 } 424 425 fb = &omap_fb->base; 426 omap_fb->format = format; 427 428 for (i = 0; i < n; i++) { 429 struct plane *plane = &omap_fb->planes[i]; 430 int size, pitch = mode_cmd->pitches[i]; 431 432 if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) { 433 dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n", 434 pitch, mode_cmd->width * format->planes[i].stride_bpp); 435 ret = -EINVAL; 436 goto fail; 437 } 438 439 size = pitch * mode_cmd->height / format->planes[i].sub_y; 440 441 if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) { 442 dev_err(dev->dev, "provided buffer object is too small! %d < %d\n", 443 bos[i]->size - mode_cmd->offsets[i], size); 444 ret = -EINVAL; 445 goto fail; 446 } 447 448 plane->bo = bos[i]; 449 plane->offset = mode_cmd->offsets[i]; 450 plane->pitch = pitch; 451 plane->paddr = 0; 452 } 453 454 drm_helper_mode_fill_fb_struct(fb, mode_cmd); 455 456 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs); 457 if (ret) { 458 dev_err(dev->dev, "framebuffer init failed: %d\n", ret); 459 goto fail; 460 } 461 462 DBG("create: FB ID: %d (%p)", fb->base.id, fb); 463 464 return fb; 465 466 fail: 467 if (fb) 468 omap_framebuffer_destroy(fb); 469 470 return ERR_PTR(ret); 471 } 472