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 int pin_count; 90 const struct format *format; 91 struct plane planes[4]; 92 }; 93 94 static int omap_framebuffer_create_handle(struct drm_framebuffer *fb, 95 struct drm_file *file_priv, 96 unsigned int *handle) 97 { 98 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 99 return drm_gem_handle_create(file_priv, 100 omap_fb->planes[0].bo, handle); 101 } 102 103 static void omap_framebuffer_destroy(struct drm_framebuffer *fb) 104 { 105 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 106 int i, n = drm_format_num_planes(fb->pixel_format); 107 108 DBG("destroy: FB ID: %d (%p)", fb->base.id, fb); 109 110 drm_framebuffer_cleanup(fb); 111 112 for (i = 0; i < n; i++) { 113 struct plane *plane = &omap_fb->planes[i]; 114 if (plane->bo) 115 drm_gem_object_unreference_unlocked(plane->bo); 116 } 117 118 kfree(omap_fb); 119 } 120 121 static int omap_framebuffer_dirty(struct drm_framebuffer *fb, 122 struct drm_file *file_priv, unsigned flags, unsigned color, 123 struct drm_clip_rect *clips, unsigned num_clips) 124 { 125 return 0; 126 } 127 128 static const struct drm_framebuffer_funcs omap_framebuffer_funcs = { 129 .create_handle = omap_framebuffer_create_handle, 130 .destroy = omap_framebuffer_destroy, 131 .dirty = omap_framebuffer_dirty, 132 }; 133 134 static uint32_t get_linear_addr(struct plane *plane, 135 const struct format *format, int n, int x, int y) 136 { 137 uint32_t offset; 138 139 offset = plane->offset + 140 (x * format->planes[n].stride_bpp) + 141 (y * plane->pitch / format->planes[n].sub_y); 142 143 return plane->paddr + offset; 144 } 145 146 /* update ovl info for scanout, handles cases of multi-planar fb's, etc. 147 */ 148 void omap_framebuffer_update_scanout(struct drm_framebuffer *fb, 149 struct omap_drm_window *win, struct omap_overlay_info *info) 150 { 151 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 152 const struct format *format = omap_fb->format; 153 struct plane *plane = &omap_fb->planes[0]; 154 uint32_t x, y, orient = 0; 155 156 info->color_mode = format->dss_format; 157 158 info->pos_x = win->crtc_x; 159 info->pos_y = win->crtc_y; 160 info->out_width = win->crtc_w; 161 info->out_height = win->crtc_h; 162 info->width = win->src_w; 163 info->height = win->src_h; 164 165 x = win->src_x; 166 y = win->src_y; 167 168 if (omap_gem_flags(plane->bo) & OMAP_BO_TILED) { 169 uint32_t w = win->src_w; 170 uint32_t h = win->src_h; 171 172 switch (win->rotation & 0xf) { 173 default: 174 dev_err(fb->dev->dev, "invalid rotation: %02x", 175 (uint32_t)win->rotation); 176 /* fallthru to default to no rotation */ 177 case 0: 178 case BIT(DRM_ROTATE_0): 179 orient = 0; 180 break; 181 case BIT(DRM_ROTATE_90): 182 orient = MASK_XY_FLIP | MASK_X_INVERT; 183 break; 184 case BIT(DRM_ROTATE_180): 185 orient = MASK_X_INVERT | MASK_Y_INVERT; 186 break; 187 case BIT(DRM_ROTATE_270): 188 orient = MASK_XY_FLIP | MASK_Y_INVERT; 189 break; 190 } 191 192 if (win->rotation & BIT(DRM_REFLECT_X)) 193 orient ^= MASK_X_INVERT; 194 195 if (win->rotation & BIT(DRM_REFLECT_Y)) 196 orient ^= MASK_Y_INVERT; 197 198 /* adjust x,y offset for flip/invert: */ 199 if (orient & MASK_XY_FLIP) 200 swap(w, h); 201 if (orient & MASK_Y_INVERT) 202 y += h - 1; 203 if (orient & MASK_X_INVERT) 204 x += w - 1; 205 206 omap_gem_rotated_paddr(plane->bo, orient, x, y, &info->paddr); 207 info->rotation_type = OMAP_DSS_ROT_TILER; 208 info->screen_width = omap_gem_tiled_stride(plane->bo, orient); 209 } else { 210 switch (win->rotation & 0xf) { 211 case 0: 212 case BIT(DRM_ROTATE_0): 213 /* OK */ 214 break; 215 216 default: 217 dev_warn(fb->dev->dev, 218 "rotation '%d' ignored for non-tiled fb\n", 219 win->rotation); 220 win->rotation = 0; 221 break; 222 } 223 224 info->paddr = get_linear_addr(plane, format, 0, x, y); 225 info->rotation_type = OMAP_DSS_ROT_DMA; 226 info->screen_width = plane->pitch; 227 } 228 229 /* convert to pixels: */ 230 info->screen_width /= format->planes[0].stride_bpp; 231 232 if (format->dss_format == OMAP_DSS_COLOR_NV12) { 233 plane = &omap_fb->planes[1]; 234 235 if (info->rotation_type == OMAP_DSS_ROT_TILER) { 236 WARN_ON(!(omap_gem_flags(plane->bo) & OMAP_BO_TILED)); 237 omap_gem_rotated_paddr(plane->bo, orient, 238 x/2, y/2, &info->p_uv_addr); 239 } else { 240 info->p_uv_addr = get_linear_addr(plane, format, 1, x, y); 241 } 242 } else { 243 info->p_uv_addr = 0; 244 } 245 } 246 247 /* pin, prepare for scanout: */ 248 int omap_framebuffer_pin(struct drm_framebuffer *fb) 249 { 250 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 251 int ret, i, n = drm_format_num_planes(fb->pixel_format); 252 253 if (omap_fb->pin_count > 0) { 254 omap_fb->pin_count++; 255 return 0; 256 } 257 258 for (i = 0; i < n; i++) { 259 struct plane *plane = &omap_fb->planes[i]; 260 ret = omap_gem_get_paddr(plane->bo, &plane->paddr, true); 261 if (ret) 262 goto fail; 263 omap_gem_dma_sync(plane->bo, DMA_TO_DEVICE); 264 } 265 266 omap_fb->pin_count++; 267 268 return 0; 269 270 fail: 271 for (i--; i >= 0; i--) { 272 struct plane *plane = &omap_fb->planes[i]; 273 omap_gem_put_paddr(plane->bo); 274 plane->paddr = 0; 275 } 276 277 return ret; 278 } 279 280 /* unpin, no longer being scanned out: */ 281 int omap_framebuffer_unpin(struct drm_framebuffer *fb) 282 { 283 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 284 int ret, i, n = drm_format_num_planes(fb->pixel_format); 285 286 omap_fb->pin_count--; 287 288 if (omap_fb->pin_count > 0) 289 return 0; 290 291 for (i = 0; i < n; i++) { 292 struct plane *plane = &omap_fb->planes[i]; 293 ret = omap_gem_put_paddr(plane->bo); 294 if (ret) 295 goto fail; 296 plane->paddr = 0; 297 } 298 299 return 0; 300 301 fail: 302 return ret; 303 } 304 305 struct drm_gem_object *omap_framebuffer_bo(struct drm_framebuffer *fb, int p) 306 { 307 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 308 if (p >= drm_format_num_planes(fb->pixel_format)) 309 return NULL; 310 return omap_fb->planes[p].bo; 311 } 312 313 /* iterate thru all the connectors, returning ones that are attached 314 * to the same fb.. 315 */ 316 struct drm_connector *omap_framebuffer_get_next_connector( 317 struct drm_framebuffer *fb, struct drm_connector *from) 318 { 319 struct drm_device *dev = fb->dev; 320 struct list_head *connector_list = &dev->mode_config.connector_list; 321 struct drm_connector *connector = from; 322 323 if (!from) 324 return list_first_entry_or_null(connector_list, typeof(*from), 325 head); 326 327 list_for_each_entry_from(connector, connector_list, head) { 328 if (connector != from) { 329 struct drm_encoder *encoder = connector->encoder; 330 struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; 331 if (crtc && crtc->primary->fb == fb) 332 return connector; 333 334 } 335 } 336 337 return NULL; 338 } 339 340 #ifdef CONFIG_DEBUG_FS 341 void omap_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m) 342 { 343 struct omap_framebuffer *omap_fb = to_omap_framebuffer(fb); 344 int i, n = drm_format_num_planes(fb->pixel_format); 345 346 seq_printf(m, "fb: %dx%d@%4.4s\n", fb->width, fb->height, 347 (char *)&fb->pixel_format); 348 349 for (i = 0; i < n; i++) { 350 struct plane *plane = &omap_fb->planes[i]; 351 seq_printf(m, " %d: offset=%d pitch=%d, obj: ", 352 i, plane->offset, plane->pitch); 353 omap_gem_describe(plane->bo, m); 354 } 355 } 356 #endif 357 358 struct drm_framebuffer *omap_framebuffer_create(struct drm_device *dev, 359 struct drm_file *file, struct drm_mode_fb_cmd2 *mode_cmd) 360 { 361 struct drm_gem_object *bos[4]; 362 struct drm_framebuffer *fb; 363 int ret; 364 365 ret = objects_lookup(dev, file, mode_cmd->pixel_format, 366 bos, mode_cmd->handles); 367 if (ret) 368 return ERR_PTR(ret); 369 370 fb = omap_framebuffer_init(dev, mode_cmd, bos); 371 if (IS_ERR(fb)) { 372 int i, n = drm_format_num_planes(mode_cmd->pixel_format); 373 for (i = 0; i < n; i++) 374 drm_gem_object_unreference_unlocked(bos[i]); 375 return fb; 376 } 377 return fb; 378 } 379 380 struct drm_framebuffer *omap_framebuffer_init(struct drm_device *dev, 381 struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos) 382 { 383 struct omap_framebuffer *omap_fb = NULL; 384 struct drm_framebuffer *fb = NULL; 385 const struct format *format = NULL; 386 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format); 387 388 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)", 389 dev, mode_cmd, mode_cmd->width, mode_cmd->height, 390 (char *)&mode_cmd->pixel_format); 391 392 for (i = 0; i < ARRAY_SIZE(formats); i++) { 393 if (formats[i].pixel_format == mode_cmd->pixel_format) { 394 format = &formats[i]; 395 break; 396 } 397 } 398 399 if (!format) { 400 dev_err(dev->dev, "unsupported pixel format: %4.4s\n", 401 (char *)&mode_cmd->pixel_format); 402 ret = -EINVAL; 403 goto fail; 404 } 405 406 omap_fb = kzalloc(sizeof(*omap_fb), GFP_KERNEL); 407 if (!omap_fb) { 408 ret = -ENOMEM; 409 goto fail; 410 } 411 412 fb = &omap_fb->base; 413 omap_fb->format = format; 414 415 for (i = 0; i < n; i++) { 416 struct plane *plane = &omap_fb->planes[i]; 417 int size, pitch = mode_cmd->pitches[i]; 418 419 if (pitch < (mode_cmd->width * format->planes[i].stride_bpp)) { 420 dev_err(dev->dev, "provided buffer pitch is too small! %d < %d\n", 421 pitch, mode_cmd->width * format->planes[i].stride_bpp); 422 ret = -EINVAL; 423 goto fail; 424 } 425 426 if (pitch % format->planes[i].stride_bpp != 0) { 427 dev_err(dev->dev, 428 "buffer pitch (%d bytes) is not a multiple of pixel size (%d bytes)\n", 429 pitch, format->planes[i].stride_bpp); 430 ret = -EINVAL; 431 goto fail; 432 } 433 434 size = pitch * mode_cmd->height / format->planes[i].sub_y; 435 436 if (size > (omap_gem_mmap_size(bos[i]) - mode_cmd->offsets[i])) { 437 dev_err(dev->dev, "provided buffer object is too small! %d < %d\n", 438 bos[i]->size - mode_cmd->offsets[i], size); 439 ret = -EINVAL; 440 goto fail; 441 } 442 443 plane->bo = bos[i]; 444 plane->offset = mode_cmd->offsets[i]; 445 plane->pitch = pitch; 446 plane->paddr = 0; 447 } 448 449 drm_helper_mode_fill_fb_struct(fb, mode_cmd); 450 451 ret = drm_framebuffer_init(dev, fb, &omap_framebuffer_funcs); 452 if (ret) { 453 dev_err(dev->dev, "framebuffer init failed: %d\n", ret); 454 goto fail; 455 } 456 457 DBG("create: FB ID: %d (%p)", fb->base.id, fb); 458 459 return fb; 460 461 fail: 462 kfree(omap_fb); 463 464 return ERR_PTR(ret); 465 } 466