1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net> 4 */ 5 6 #include <drm/drm_atomic.h> 7 #include <drm/drm_atomic_helper.h> 8 #include <drm/drm_crtc.h> 9 #include <drm/drm_fb_cma_helper.h> 10 #include <drm/drm_gem_cma_helper.h> 11 #include <drm/drm_gem_framebuffer_helper.h> 12 #include <drm/drm_plane_helper.h> 13 #include <drm/drm_probe_helper.h> 14 15 #include "sun8i_csc.h" 16 #include "sun8i_vi_layer.h" 17 #include "sun8i_mixer.h" 18 #include "sun8i_vi_scaler.h" 19 20 static void sun8i_vi_layer_enable(struct sun8i_mixer *mixer, int channel, 21 int overlay, bool enable, unsigned int zpos, 22 unsigned int old_zpos) 23 { 24 u32 val, bld_base, ch_base; 25 26 bld_base = sun8i_blender_base(mixer); 27 ch_base = sun8i_channel_base(mixer, channel); 28 29 DRM_DEBUG_DRIVER("%sabling VI channel %d overlay %d\n", 30 enable ? "En" : "Dis", channel, overlay); 31 32 if (enable) 33 val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN; 34 else 35 val = 0; 36 37 regmap_update_bits(mixer->engine.regs, 38 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay), 39 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN, val); 40 41 if (!enable || zpos != old_zpos) { 42 regmap_update_bits(mixer->engine.regs, 43 SUN8I_MIXER_BLEND_PIPE_CTL(bld_base), 44 SUN8I_MIXER_BLEND_PIPE_CTL_EN(old_zpos), 45 0); 46 47 regmap_update_bits(mixer->engine.regs, 48 SUN8I_MIXER_BLEND_ROUTE(bld_base), 49 SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(old_zpos), 50 0); 51 } 52 53 if (enable) { 54 val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos); 55 56 regmap_update_bits(mixer->engine.regs, 57 SUN8I_MIXER_BLEND_PIPE_CTL(bld_base), 58 val, val); 59 60 val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos); 61 62 regmap_update_bits(mixer->engine.regs, 63 SUN8I_MIXER_BLEND_ROUTE(bld_base), 64 SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos), 65 val); 66 } 67 } 68 69 static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel, 70 int overlay, struct drm_plane *plane, 71 unsigned int zpos) 72 { 73 struct drm_plane_state *state = plane->state; 74 const struct drm_format_info *format = state->fb->format; 75 u32 src_w, src_h, dst_w, dst_h; 76 u32 bld_base, ch_base; 77 u32 outsize, insize; 78 u32 hphase, vphase; 79 u32 hn = 0, hm = 0; 80 u32 vn = 0, vm = 0; 81 bool subsampled; 82 83 DRM_DEBUG_DRIVER("Updating VI channel %d overlay %d\n", 84 channel, overlay); 85 86 bld_base = sun8i_blender_base(mixer); 87 ch_base = sun8i_channel_base(mixer, channel); 88 89 src_w = drm_rect_width(&state->src) >> 16; 90 src_h = drm_rect_height(&state->src) >> 16; 91 dst_w = drm_rect_width(&state->dst); 92 dst_h = drm_rect_height(&state->dst); 93 94 hphase = state->src.x1 & 0xffff; 95 vphase = state->src.y1 & 0xffff; 96 97 /* make coordinates dividable by subsampling factor */ 98 if (format->hsub > 1) { 99 int mask, remainder; 100 101 mask = format->hsub - 1; 102 remainder = (state->src.x1 >> 16) & mask; 103 src_w = (src_w + remainder) & ~mask; 104 hphase += remainder << 16; 105 } 106 107 if (format->vsub > 1) { 108 int mask, remainder; 109 110 mask = format->vsub - 1; 111 remainder = (state->src.y1 >> 16) & mask; 112 src_h = (src_h + remainder) & ~mask; 113 vphase += remainder << 16; 114 } 115 116 insize = SUN8I_MIXER_SIZE(src_w, src_h); 117 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h); 118 119 /* Set height and width */ 120 DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n", 121 (state->src.x1 >> 16) & ~(format->hsub - 1), 122 (state->src.y1 >> 16) & ~(format->vsub - 1)); 123 DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h); 124 regmap_write(mixer->engine.regs, 125 SUN8I_MIXER_CHAN_VI_LAYER_SIZE(ch_base, overlay), 126 insize); 127 regmap_write(mixer->engine.regs, 128 SUN8I_MIXER_CHAN_VI_OVL_SIZE(ch_base), 129 insize); 130 131 /* 132 * Scaler must be enabled for subsampled formats, so it scales 133 * chroma to same size as luma. 134 */ 135 subsampled = format->hsub > 1 || format->vsub > 1; 136 137 if (insize != outsize || subsampled || hphase || vphase) { 138 unsigned int scanline, required; 139 struct drm_display_mode *mode; 140 u32 hscale, vscale, fps; 141 u64 ability; 142 143 DRM_DEBUG_DRIVER("HW scaling is enabled\n"); 144 145 mode = &plane->state->crtc->state->mode; 146 fps = (mode->clock * 1000) / (mode->vtotal * mode->htotal); 147 ability = clk_get_rate(mixer->mod_clk); 148 /* BSP algorithm assumes 80% efficiency of VI scaler unit */ 149 ability *= 80; 150 do_div(ability, mode->vdisplay * fps * max(src_w, dst_w)); 151 152 required = src_h * 100 / dst_h; 153 154 if (ability < required) { 155 DRM_DEBUG_DRIVER("Using vertical coarse scaling\n"); 156 vm = src_h; 157 vn = (u32)ability * dst_h / 100; 158 src_h = vn; 159 } 160 161 /* it seems that every RGB scaler has buffer for 2048 pixels */ 162 scanline = subsampled ? mixer->cfg->scanline_yuv : 2048; 163 164 if (src_w > scanline) { 165 DRM_DEBUG_DRIVER("Using horizontal coarse scaling\n"); 166 hm = src_w; 167 hn = scanline; 168 src_w = hn; 169 } 170 171 hscale = (src_w << 16) / dst_w; 172 vscale = (src_h << 16) / dst_h; 173 174 sun8i_vi_scaler_setup(mixer, channel, src_w, src_h, dst_w, 175 dst_h, hscale, vscale, hphase, vphase, 176 format); 177 sun8i_vi_scaler_enable(mixer, channel, true); 178 } else { 179 DRM_DEBUG_DRIVER("HW scaling is not needed\n"); 180 sun8i_vi_scaler_enable(mixer, channel, false); 181 } 182 183 regmap_write(mixer->engine.regs, 184 SUN8I_MIXER_CHAN_VI_HDS_Y(ch_base), 185 SUN8I_MIXER_CHAN_VI_DS_N(hn) | 186 SUN8I_MIXER_CHAN_VI_DS_M(hm)); 187 regmap_write(mixer->engine.regs, 188 SUN8I_MIXER_CHAN_VI_HDS_UV(ch_base), 189 SUN8I_MIXER_CHAN_VI_DS_N(hn) | 190 SUN8I_MIXER_CHAN_VI_DS_M(hm)); 191 regmap_write(mixer->engine.regs, 192 SUN8I_MIXER_CHAN_VI_VDS_Y(ch_base), 193 SUN8I_MIXER_CHAN_VI_DS_N(vn) | 194 SUN8I_MIXER_CHAN_VI_DS_M(vm)); 195 regmap_write(mixer->engine.regs, 196 SUN8I_MIXER_CHAN_VI_VDS_UV(ch_base), 197 SUN8I_MIXER_CHAN_VI_DS_N(vn) | 198 SUN8I_MIXER_CHAN_VI_DS_M(vm)); 199 200 /* Set base coordinates */ 201 DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n", 202 state->dst.x1, state->dst.y1); 203 DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h); 204 regmap_write(mixer->engine.regs, 205 SUN8I_MIXER_BLEND_ATTR_COORD(bld_base, zpos), 206 SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1)); 207 regmap_write(mixer->engine.regs, 208 SUN8I_MIXER_BLEND_ATTR_INSIZE(bld_base, zpos), 209 outsize); 210 211 return 0; 212 } 213 214 static bool sun8i_vi_layer_get_csc_mode(const struct drm_format_info *format) 215 { 216 if (!format->is_yuv) 217 return SUN8I_CSC_MODE_OFF; 218 219 switch (format->format) { 220 case DRM_FORMAT_YVU411: 221 case DRM_FORMAT_YVU420: 222 case DRM_FORMAT_YVU422: 223 case DRM_FORMAT_YVU444: 224 return SUN8I_CSC_MODE_YVU2RGB; 225 default: 226 return SUN8I_CSC_MODE_YUV2RGB; 227 } 228 } 229 230 static int sun8i_vi_layer_update_formats(struct sun8i_mixer *mixer, int channel, 231 int overlay, struct drm_plane *plane) 232 { 233 struct drm_plane_state *state = plane->state; 234 u32 val, ch_base, csc_mode, hw_fmt; 235 const struct drm_format_info *fmt; 236 int ret; 237 238 ch_base = sun8i_channel_base(mixer, channel); 239 240 fmt = state->fb->format; 241 ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt); 242 if (ret) { 243 DRM_DEBUG_DRIVER("Invalid format\n"); 244 return ret; 245 } 246 247 val = hw_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET; 248 regmap_update_bits(mixer->engine.regs, 249 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay), 250 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK, val); 251 252 csc_mode = sun8i_vi_layer_get_csc_mode(fmt); 253 if (csc_mode != SUN8I_CSC_MODE_OFF) { 254 sun8i_csc_set_ccsc_coefficients(mixer, channel, csc_mode, 255 state->color_encoding, 256 state->color_range); 257 sun8i_csc_enable_ccsc(mixer, channel, true); 258 } else { 259 sun8i_csc_enable_ccsc(mixer, channel, false); 260 } 261 262 if (!fmt->is_yuv) 263 val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE; 264 else 265 val = 0; 266 267 regmap_update_bits(mixer->engine.regs, 268 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay), 269 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE, val); 270 271 /* It seems that YUV formats use global alpha setting. */ 272 if (mixer->cfg->is_de3) 273 regmap_update_bits(mixer->engine.regs, 274 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, 275 overlay), 276 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MASK, 277 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA(0xff)); 278 279 return 0; 280 } 281 282 static int sun8i_vi_layer_update_buffer(struct sun8i_mixer *mixer, int channel, 283 int overlay, struct drm_plane *plane) 284 { 285 struct drm_plane_state *state = plane->state; 286 struct drm_framebuffer *fb = state->fb; 287 const struct drm_format_info *format = fb->format; 288 struct drm_gem_cma_object *gem; 289 u32 dx, dy, src_x, src_y; 290 dma_addr_t paddr; 291 u32 ch_base; 292 int i; 293 294 ch_base = sun8i_channel_base(mixer, channel); 295 296 /* Adjust x and y to be dividable by subsampling factor */ 297 src_x = (state->src.x1 >> 16) & ~(format->hsub - 1); 298 src_y = (state->src.y1 >> 16) & ~(format->vsub - 1); 299 300 for (i = 0; i < format->num_planes; i++) { 301 /* Get the physical address of the buffer in memory */ 302 gem = drm_fb_cma_get_gem_obj(fb, i); 303 304 DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr); 305 306 /* Compute the start of the displayed memory */ 307 paddr = gem->paddr + fb->offsets[i]; 308 309 dx = src_x; 310 dy = src_y; 311 312 if (i > 0) { 313 dx /= format->hsub; 314 dy /= format->vsub; 315 } 316 317 /* Fixup framebuffer address for src coordinates */ 318 paddr += dx * format->cpp[i]; 319 paddr += dy * fb->pitches[i]; 320 321 /* Set the line width */ 322 DRM_DEBUG_DRIVER("Layer %d. line width: %d bytes\n", 323 i + 1, fb->pitches[i]); 324 regmap_write(mixer->engine.regs, 325 SUN8I_MIXER_CHAN_VI_LAYER_PITCH(ch_base, 326 overlay, i), 327 fb->pitches[i]); 328 329 DRM_DEBUG_DRIVER("Setting %d. buffer address to %pad\n", 330 i + 1, &paddr); 331 332 regmap_write(mixer->engine.regs, 333 SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(ch_base, 334 overlay, i), 335 lower_32_bits(paddr)); 336 } 337 338 return 0; 339 } 340 341 static int sun8i_vi_layer_atomic_check(struct drm_plane *plane, 342 struct drm_plane_state *state) 343 { 344 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane); 345 struct drm_crtc *crtc = state->crtc; 346 struct drm_crtc_state *crtc_state; 347 int min_scale, max_scale; 348 349 if (!crtc) 350 return 0; 351 352 crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc); 353 if (WARN_ON(!crtc_state)) 354 return -EINVAL; 355 356 min_scale = DRM_PLANE_HELPER_NO_SCALING; 357 max_scale = DRM_PLANE_HELPER_NO_SCALING; 358 359 if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) { 360 min_scale = SUN8I_VI_SCALER_SCALE_MIN; 361 max_scale = SUN8I_VI_SCALER_SCALE_MAX; 362 } 363 364 return drm_atomic_helper_check_plane_state(state, crtc_state, 365 min_scale, max_scale, 366 true, true); 367 } 368 369 static void sun8i_vi_layer_atomic_disable(struct drm_plane *plane, 370 struct drm_plane_state *old_state) 371 { 372 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane); 373 unsigned int old_zpos = old_state->normalized_zpos; 374 struct sun8i_mixer *mixer = layer->mixer; 375 376 sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, false, 0, 377 old_zpos); 378 } 379 380 static void sun8i_vi_layer_atomic_update(struct drm_plane *plane, 381 struct drm_plane_state *old_state) 382 { 383 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane); 384 unsigned int zpos = plane->state->normalized_zpos; 385 unsigned int old_zpos = old_state->normalized_zpos; 386 struct sun8i_mixer *mixer = layer->mixer; 387 388 if (!plane->state->visible) { 389 sun8i_vi_layer_enable(mixer, layer->channel, 390 layer->overlay, false, 0, old_zpos); 391 return; 392 } 393 394 sun8i_vi_layer_update_coord(mixer, layer->channel, 395 layer->overlay, plane, zpos); 396 sun8i_vi_layer_update_formats(mixer, layer->channel, 397 layer->overlay, plane); 398 sun8i_vi_layer_update_buffer(mixer, layer->channel, 399 layer->overlay, plane); 400 sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, 401 true, zpos, old_zpos); 402 } 403 404 static struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = { 405 .prepare_fb = drm_gem_fb_prepare_fb, 406 .atomic_check = sun8i_vi_layer_atomic_check, 407 .atomic_disable = sun8i_vi_layer_atomic_disable, 408 .atomic_update = sun8i_vi_layer_atomic_update, 409 }; 410 411 static const struct drm_plane_funcs sun8i_vi_layer_funcs = { 412 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 413 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 414 .destroy = drm_plane_cleanup, 415 .disable_plane = drm_atomic_helper_disable_plane, 416 .reset = drm_atomic_helper_plane_reset, 417 .update_plane = drm_atomic_helper_update_plane, 418 }; 419 420 /* 421 * While DE2 VI layer supports same RGB formats as UI layer, alpha 422 * channel is ignored. This structure lists all unique variants 423 * where alpha channel is replaced with "don't care" (X) channel. 424 */ 425 static const u32 sun8i_vi_layer_formats[] = { 426 DRM_FORMAT_BGR565, 427 DRM_FORMAT_BGR888, 428 DRM_FORMAT_BGRX4444, 429 DRM_FORMAT_BGRX5551, 430 DRM_FORMAT_BGRX8888, 431 DRM_FORMAT_RGB565, 432 DRM_FORMAT_RGB888, 433 DRM_FORMAT_RGBX4444, 434 DRM_FORMAT_RGBX5551, 435 DRM_FORMAT_RGBX8888, 436 DRM_FORMAT_XBGR1555, 437 DRM_FORMAT_XBGR4444, 438 DRM_FORMAT_XBGR8888, 439 DRM_FORMAT_XRGB1555, 440 DRM_FORMAT_XRGB4444, 441 DRM_FORMAT_XRGB8888, 442 443 DRM_FORMAT_NV16, 444 DRM_FORMAT_NV12, 445 DRM_FORMAT_NV21, 446 DRM_FORMAT_NV61, 447 DRM_FORMAT_UYVY, 448 DRM_FORMAT_VYUY, 449 DRM_FORMAT_YUYV, 450 DRM_FORMAT_YVYU, 451 DRM_FORMAT_YUV411, 452 DRM_FORMAT_YUV420, 453 DRM_FORMAT_YUV422, 454 DRM_FORMAT_YVU411, 455 DRM_FORMAT_YVU420, 456 DRM_FORMAT_YVU422, 457 }; 458 459 static const u32 sun8i_vi_layer_de3_formats[] = { 460 DRM_FORMAT_ABGR1555, 461 DRM_FORMAT_ABGR2101010, 462 DRM_FORMAT_ABGR4444, 463 DRM_FORMAT_ABGR8888, 464 DRM_FORMAT_ARGB1555, 465 DRM_FORMAT_ARGB2101010, 466 DRM_FORMAT_ARGB4444, 467 DRM_FORMAT_ARGB8888, 468 DRM_FORMAT_BGR565, 469 DRM_FORMAT_BGR888, 470 DRM_FORMAT_BGRA1010102, 471 DRM_FORMAT_BGRA5551, 472 DRM_FORMAT_BGRA4444, 473 DRM_FORMAT_BGRA8888, 474 DRM_FORMAT_BGRX8888, 475 DRM_FORMAT_RGB565, 476 DRM_FORMAT_RGB888, 477 DRM_FORMAT_RGBA1010102, 478 DRM_FORMAT_RGBA4444, 479 DRM_FORMAT_RGBA5551, 480 DRM_FORMAT_RGBA8888, 481 DRM_FORMAT_RGBX8888, 482 DRM_FORMAT_XBGR8888, 483 DRM_FORMAT_XRGB8888, 484 485 DRM_FORMAT_NV16, 486 DRM_FORMAT_NV12, 487 DRM_FORMAT_NV21, 488 DRM_FORMAT_NV61, 489 DRM_FORMAT_P010, 490 DRM_FORMAT_P210, 491 DRM_FORMAT_UYVY, 492 DRM_FORMAT_VYUY, 493 DRM_FORMAT_YUYV, 494 DRM_FORMAT_YVYU, 495 DRM_FORMAT_YUV411, 496 DRM_FORMAT_YUV420, 497 DRM_FORMAT_YUV422, 498 DRM_FORMAT_YVU411, 499 DRM_FORMAT_YVU420, 500 DRM_FORMAT_YVU422, 501 }; 502 503 struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm, 504 struct sun8i_mixer *mixer, 505 int index) 506 { 507 u32 supported_encodings, supported_ranges; 508 unsigned int plane_cnt, format_count; 509 struct sun8i_vi_layer *layer; 510 const u32 *formats; 511 int ret; 512 513 layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL); 514 if (!layer) 515 return ERR_PTR(-ENOMEM); 516 517 if (mixer->cfg->is_de3) { 518 formats = sun8i_vi_layer_de3_formats; 519 format_count = ARRAY_SIZE(sun8i_vi_layer_de3_formats); 520 } else { 521 formats = sun8i_vi_layer_formats; 522 format_count = ARRAY_SIZE(sun8i_vi_layer_formats); 523 } 524 525 /* possible crtcs are set later */ 526 ret = drm_universal_plane_init(drm, &layer->plane, 0, 527 &sun8i_vi_layer_funcs, 528 formats, format_count, 529 NULL, DRM_PLANE_TYPE_OVERLAY, NULL); 530 if (ret) { 531 dev_err(drm->dev, "Couldn't initialize layer\n"); 532 return ERR_PTR(ret); 533 } 534 535 plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num; 536 537 ret = drm_plane_create_zpos_property(&layer->plane, index, 538 0, plane_cnt - 1); 539 if (ret) { 540 dev_err(drm->dev, "Couldn't add zpos property\n"); 541 return ERR_PTR(ret); 542 } 543 544 supported_encodings = BIT(DRM_COLOR_YCBCR_BT601) | 545 BIT(DRM_COLOR_YCBCR_BT709); 546 547 supported_ranges = BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) | 548 BIT(DRM_COLOR_YCBCR_FULL_RANGE); 549 550 ret = drm_plane_create_color_properties(&layer->plane, 551 supported_encodings, 552 supported_ranges, 553 DRM_COLOR_YCBCR_BT709, 554 DRM_COLOR_YCBCR_LIMITED_RANGE); 555 if (ret) { 556 dev_err(drm->dev, "Couldn't add encoding and range properties!\n"); 557 return ERR_PTR(ret); 558 } 559 560 drm_plane_helper_add(&layer->plane, &sun8i_vi_layer_helper_funcs); 561 layer->mixer = mixer; 562 layer->channel = index; 563 layer->overlay = 0; 564 565 return layer; 566 } 567