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 drm_modeset_lock_all(fb->dev); 127 128 for (i = 0; i < num_clips; i++) { 129 omap_framebuffer_flush(fb, clips[i].x1, clips[i].y1, 130 clips[i].x2 - clips[i].x1, 131 clips[i].y2 - clips[i].y1); 132 } 133 134 drm_modeset_unlock_all(fb->dev); 135 136 return 0; 137 } 138 139 static const struct drm_framebuffer_funcs omap_framebuffer_funcs = { 140 .create_handle = omap_framebuffer_create_handle, 141 .destroy = omap_framebuffer_destroy, 142 .dirty = omap_framebuffer_dirty, 143 }; 144 145 static uint32_t get_linear_addr(struct plane *plane, 146 const struct format *format, int n, int x, int y) 147 { 148 uint32_t offset; 149 150 offset = plane->offset + 151 (x * format->planes[n].stride_bpp) + 152 (y * plane->pitch / format->planes[n].sub_y); 153 154 return plane->paddr + offset; 155 } 156 157 /* update ovl info for scanout, handles cases of multi-planar fb's, etc. 158 */ 159 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb, 160 struct omap_drm_window *win, struct omap_overlay_info *info) 161 { 162 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 163 const struct format *format = omap_fb->format; 164 struct plane *plane = &omap_fb->planes[0]; 165 uint32_t x, y, orient = 0; 166 167 info->color_mode = format->dss_format; 168 169 info->pos_x = win->crtc_x; 170 info->pos_y = win->crtc_y; 171 info->out_width = win->crtc_w; 172 info->out_height = win->crtc_h; 173 info->width = win->src_w; 174 info->height = win->src_h; 175 176 x = win->src_x; 177 y = win->src_y; 178 179 if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) { 180 uint32_t w = win->src_w; 181 uint32_t h = win->src_h; 182 183 switch (win->rotation & 0xf) { 184 default: 185 dev_err(fb->dev->dev, "invalid rotation: %02x", 186 (uint32_t)win->rotation); 187 /* fallthru to default to no rotation */ 188 case 0: 189 case BIT(DRM_ROTATE_0): 190 orient = 0; 191 break; 192 case BIT(DRM_ROTATE_90): 193 orient = MASK_XY_FLIP | MASK_X_INVERT; 194 break; 195 case BIT(DRM_ROTATE_180): 196 orient = MASK_X_INVERT | MASK_Y_INVERT; 197 break; 198 case BIT(DRM_ROTATE_270): 199 orient = MASK_XY_FLIP | MASK_Y_INVERT; 200 break; 201 } 202 203 if (win->rotation & BIT(DRM_REFLECT_X)) 204 orient ^= MASK_X_INVERT; 205 206 if (win->rotation & BIT(DRM_REFLECT_Y)) 207 orient ^= MASK_Y_INVERT; 208 209 /* adjust x,y offset for flip/invert: */ 210 if (orient & MASK_XY_FLIP) 211 swap(w, h); 212 if (orient & MASK_Y_INVERT) 213 y += h - 1; 214 if (orient & MASK_X_INVERT) 215 x += w - 1; 216 217 omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr); 218 info->rotation_type = OMAP_DSS_ROT_TILER; 219 info->screen_width = omap_gem_tiled_stride(plane->bo, orient); 220 } else { 221 info->paddr = get_linear_addr(plane, format, 0, x, y); 222 info->rotation_type = OMAP_DSS_ROT_DMA; 223 info->screen_width = plane->pitch; 224 } 225 226 /* convert to pixels: */ 227 info->screen_width /= format->planes[0].stride_bpp; 228 229 if (format->dss_format == OMAP_DSS_COLOR_NV12) { 230 plane = &omap_fb->planes[1]; 231 232 if (info->rotation_type == OMAP_DSS_ROT_TILER) { 233 WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED)); 234 omap_gem_rotated_paddr(plane->bo, orient, 235 x/2, y/2, &info->p_uv_addr); 236 } else { 237 info->p_uv_addr = get_linear_addr(plane, format, 1, x, y); 238 } 239 } else { 240 info->p_uv_addr = 0; 241 } 242 } 243 244 /* pin, prepare for scanout: */ 245 int omap_framebuffer_pin(struct drm_framebuffer *fb) 246 { 247 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 248 int ret, i, n = drm_format_num_planes(fb->pixel_format); 249 250 for (i = 0; i < n; i++) { 251 struct plane *plane = &omap_fb->planes[i]; 252 ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true); 253 if (ret) 254 goto fail; 255 omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE); 256 } 257 258 return 0; 259 260 fail: 261 for (i--; i >= 0; i--) { 262 struct plane *plane = &omap_fb->planes[i]; 263 omap_gem_put_paddr(plane->bo); 264 plane->paddr = 0; 265 } 266 267 return ret; 268 } 269 270 /* unpin, no longer being scanned out: */ 271 int omap_framebuffer_unpin(struct drm_framebuffer *fb) 272 { 273 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 274 int ret, i, n = drm_format_num_planes(fb->pixel_format); 275 276 for (i = 0; i < n; i++) { 277 struct plane *plane = &omap_fb->planes[i]; 278 ret = omap_gem_put_paddr(plane->bo); 279 if (ret) 280 goto fail; 281 plane->paddr = 0; 282 } 283 284 return 0; 285 286 fail: 287 return ret; 288 } 289 290 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p) 291 { 292 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 293 if (p >= drm_format_num_planes(fb->pixel_format)) 294 return NULL; 295 return omap_fb->planes[p].bo; 296 } 297 298 /* iterate thru all the connectors, returning ones that are attached 299 * to the same fb.. 300 */ 301 struct drm_connector *omap_framebuffer_get_next_connector( 302 struct drm_framebuffer *fb, struct drm_connector *from) 303 { 304 struct drm_device *dev = fb->dev; 305 struct list_head *connector_list = &dev->mode_config.connector_list; 306 struct drm_connector *connector = from; 307 308 if (!from) 309 return list_first_entry(connector_list, typeof(*from), head); 310 311 list_for_each_entry_from(connector, connector_list, head) { 312 if (connector != from) { 313 struct drm_encoder *encoder = connector->encoder; 314 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; 315 if (crtc && crtc->fb == fb) 316 return connector; 317 318 } 319 } 320 321 return NULL; 322 } 323 324 /* flush an area of the framebuffer (in case of manual update display that 325 * is not automatically flushed) 326 */ 327 void omap_framebuffer_flush(struct drm_framebuffer *fb, 328 int x, int y, int w, int h) 329 { 330 struct drm_connector *connector = NULL; 331 332 VERB("flush: %d,%d %dx%d, fb=%p", x, y, w, h, fb); 333 334 while ((connector = omap_framebuffer_get_next_connector(fb, connector))) { 335 /* only consider connectors that are part of a chain */ 336 if (connector->encoder && connector->encoder->crtc) { 337 /* TODO: maybe this should propagate thru the crtc who 338 * could do the coordinate translation.. 339 */ 340 struct drm_crtc *crtc = connector->encoder->crtc; 341 int cx = max(0, x - crtc->x); 342 int cy = max(0, y - crtc->y); 343 int cw = w + (x - crtc->x) - cx; 344 int ch = h + (y - crtc->y) - cy; 345 346 omap_connector_flush(connector, cx, cy, cw, ch); 347 } 348 } 349 } 350 351 #ifdef CONFIG_DEBUG_FS 352 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m) 353 { 354 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 355 int i, n = drm_format_num_planes(fb->pixel_format); 356 357 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height, 358 (char *)&fb->pixel_format); 359 360 for (i = 0; i < n; i++) { 361 struct plane *plane = &omap_fb->planes[i]; 362 seq_printf(m, " %d: offset=%d pitch=%d, obj: ", 363 i, plane->offset, plane->pitch); 364 omap_gem_describe(plane->bo, m); 365 } 366 } 367 #endif 368 369 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev, 370 struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd) 371 { 372 struct drm_gem_object *bos[4]; 373 struct drm_framebuffer *fb; 374 int ret; 375 376 ret = objects_lookup(dev, file, mode_cmd->pixel_format, 377 bos, mode_cmd->handles); 378 if (ret) 379 return ERR_PTR(ret); 380 381 fb = omap_framebuffer_init(dev, mode_cmd, bos); 382 if (IS_ERR(fb)) { 383 int i, n = drm_format_num_planes(mode_cmd->pixel_format); 384 for (i = 0; i < n; i++) 385 drm_gem_object_unreference_unlocked(bos[i]); 386 return fb; 387 } 388 return fb; 389 } 390 391 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, 392 struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos) 393 { 394 struct omap_framebuffer *omap_fb; 395 struct drm_framebuffer *fb = NULL; 396 const struct format *format = NULL; 397 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format); 398 399 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)", 400 dev, mode_cmd, mode_cmd->width, mode_cmd->height, 401 (char *)&mode_cmd->pixel_format); 402 403 for (i = 0; i < ARRAY_SIZE(formats); i++) { 404 if (formats[i].pixel_format == mode_cmd->pixel_format) { 405 format = &formats[i]; 406 break; 407 } 408 } 409 410 if (!format) { 411 dev_err(dev->dev, "unsupported pixel format: %4.4s\n", 412 (char *)&mode_cmd->pixel_format); 413 ret = -EINVAL; 414 goto fail; 415 } 416 417 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL); 418 if (!omap_fb) { 419 ret = -ENOMEM; 420 goto fail; 421 } 422 423 fb = &omap_fb->base; 424 omap_fb->format = format; 425 426 for (i = 0; i < n; i++) { 427 struct plane *plane = &omap_fb->planes[i]; 428 int size, pitch = mode_cmd->pitches[i]; 429 430 if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) { 431 dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n", 432 pitch, mode_cmd->width * format->planes[i].stride_bpp); 433 ret = -EINVAL; 434 goto fail; 435 } 436 437 size = pitch * mode_cmd->height / format->planes[i].sub_y; 438 439 if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) { 440 dev_err(dev->dev, "provided buffer object is too small! %d < %d\n", 441 bos[i]->size - mode_cmd->offsets[i], size); 442 ret = -EINVAL; 443 goto fail; 444 } 445 446 plane->bo = bos[i]; 447 plane->offset = mode_cmd->offsets[i]; 448 plane->pitch = pitch; 449 plane->paddr = 0; 450 } 451 452 drm_helper_mode_fill_fb_struct(fb, mode_cmd); 453 454 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs); 455 if (ret) { 456 dev_err(dev->dev, "framebuffer init failed: %d\n", ret); 457 goto fail; 458 } 459 460 DBG("create: FB ID: %d (%p)", fb->base.id, fb); 461 462 return fb; 463 464 fail: 465 if (fb) 466 omap_framebuffer_destroy(fb); 467 468 return ERR_PTR(ret); 469 } 470