linux/drivers/gpu/drm/nouveau/dispnv04/overlay.c
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   1/*
   2 * Copyright 2013 Ilia Mirkin
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20 * SOFTWARE.
  21 *
  22 * Implementation based on the pre-KMS implementation in xf86-video-nouveau,
  23 * written by Arthur Huillet.
  24 */
  25
  26#include <drm/drmP.h>
  27#include <drm/drm_crtc.h>
  28#include <drm/drm_fourcc.h>
  29
  30#include "nouveau_drm.h"
  31
  32#include "nouveau_bo.h"
  33#include "nouveau_connector.h"
  34#include "nouveau_display.h"
  35#include "nvreg.h"
  36
  37
  38struct nouveau_plane {
  39        struct drm_plane base;
  40        bool flip;
  41        struct nouveau_bo *cur;
  42
  43        struct {
  44                struct drm_property *colorkey;
  45                struct drm_property *contrast;
  46                struct drm_property *brightness;
  47                struct drm_property *hue;
  48                struct drm_property *saturation;
  49                struct drm_property *iturbt_709;
  50        } props;
  51
  52        int colorkey;
  53        int contrast;
  54        int brightness;
  55        int hue;
  56        int saturation;
  57        int iturbt_709;
  58
  59        void (*set_params)(struct nouveau_plane *);
  60};
  61
  62static uint32_t formats[] = {
  63        DRM_FORMAT_YUYV,
  64        DRM_FORMAT_UYVY,
  65        DRM_FORMAT_NV12,
  66};
  67
  68/* Sine can be approximated with
  69 * http://en.wikipedia.org/wiki/Bhaskara_I's_sine_approximation_formula
  70 * sin(x degrees) ~= 4 x (180 - x) / (40500 - x (180 - x) )
  71 * Note that this only works for the range [0, 180].
  72 * Also note that sin(x) == -sin(x - 180)
  73 */
  74static inline int
  75sin_mul(int degrees, int factor)
  76{
  77        if (degrees > 180) {
  78                degrees -= 180;
  79                factor *= -1;
  80        }
  81        return factor * 4 * degrees * (180 - degrees) /
  82                (40500 - degrees * (180 - degrees));
  83}
  84
  85/* cos(x) = sin(x + 90) */
  86static inline int
  87cos_mul(int degrees, int factor)
  88{
  89        return sin_mul((degrees + 90) % 360, factor);
  90}
  91
  92static int
  93nv10_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
  94                  struct drm_framebuffer *fb, int crtc_x, int crtc_y,
  95                  unsigned int crtc_w, unsigned int crtc_h,
  96                  uint32_t src_x, uint32_t src_y,
  97                  uint32_t src_w, uint32_t src_h)
  98{
  99        struct nouveau_drm *drm = nouveau_drm(plane->dev);
 100        struct nvif_object *dev = &drm->device.object;
 101        struct nouveau_plane *nv_plane =
 102                container_of(plane, struct nouveau_plane, base);
 103        struct nouveau_framebuffer *nv_fb = nouveau_framebuffer(fb);
 104        struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 105        struct nouveau_bo *cur = nv_plane->cur;
 106        bool flip = nv_plane->flip;
 107        int soff = NV_PCRTC0_SIZE * nv_crtc->index;
 108        int soff2 = NV_PCRTC0_SIZE * !nv_crtc->index;
 109        int format, ret;
 110
 111        /* Source parameters given in 16.16 fixed point, ignore fractional. */
 112        src_x >>= 16;
 113        src_y >>= 16;
 114        src_w >>= 16;
 115        src_h >>= 16;
 116
 117        format = ALIGN(src_w * 4, 0x100);
 118
 119        if (format > 0xffff)
 120                return -ERANGE;
 121
 122        if (drm->device.info.chipset >= 0x30) {
 123                if (crtc_w < (src_w >> 1) || crtc_h < (src_h >> 1))
 124                        return -ERANGE;
 125        } else {
 126                if (crtc_w < (src_w >> 3) || crtc_h < (src_h >> 3))
 127                        return -ERANGE;
 128        }
 129
 130        ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM, false);
 131        if (ret)
 132                return ret;
 133
 134        nv_plane->cur = nv_fb->nvbo;
 135
 136        nvif_mask(dev, NV_PCRTC_ENGINE_CTRL + soff, NV_CRTC_FSEL_OVERLAY, NV_CRTC_FSEL_OVERLAY);
 137        nvif_mask(dev, NV_PCRTC_ENGINE_CTRL + soff2, NV_CRTC_FSEL_OVERLAY, 0);
 138
 139        nvif_wr32(dev, NV_PVIDEO_BASE(flip), 0);
 140        nvif_wr32(dev, NV_PVIDEO_OFFSET_BUFF(flip), nv_fb->nvbo->bo.offset);
 141        nvif_wr32(dev, NV_PVIDEO_SIZE_IN(flip), src_h << 16 | src_w);
 142        nvif_wr32(dev, NV_PVIDEO_POINT_IN(flip), src_y << 16 | src_x);
 143        nvif_wr32(dev, NV_PVIDEO_DS_DX(flip), (src_w << 20) / crtc_w);
 144        nvif_wr32(dev, NV_PVIDEO_DT_DY(flip), (src_h << 20) / crtc_h);
 145        nvif_wr32(dev, NV_PVIDEO_POINT_OUT(flip), crtc_y << 16 | crtc_x);
 146        nvif_wr32(dev, NV_PVIDEO_SIZE_OUT(flip), crtc_h << 16 | crtc_w);
 147
 148        if (fb->pixel_format != DRM_FORMAT_UYVY)
 149                format |= NV_PVIDEO_FORMAT_COLOR_LE_CR8YB8CB8YA8;
 150        if (fb->pixel_format == DRM_FORMAT_NV12)
 151                format |= NV_PVIDEO_FORMAT_PLANAR;
 152        if (nv_plane->iturbt_709)
 153                format |= NV_PVIDEO_FORMAT_MATRIX_ITURBT709;
 154        if (nv_plane->colorkey & (1 << 24))
 155                format |= NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY;
 156
 157        if (fb->pixel_format == DRM_FORMAT_NV12) {
 158                nvif_wr32(dev, NV_PVIDEO_UVPLANE_BASE(flip), 0);
 159                nvif_wr32(dev, NV_PVIDEO_UVPLANE_OFFSET_BUFF(flip),
 160                        nv_fb->nvbo->bo.offset + fb->offsets[1]);
 161        }
 162        nvif_wr32(dev, NV_PVIDEO_FORMAT(flip), format);
 163        nvif_wr32(dev, NV_PVIDEO_STOP, 0);
 164        /* TODO: wait for vblank? */
 165        nvif_wr32(dev, NV_PVIDEO_BUFFER, flip ? 0x10 : 0x1);
 166        nv_plane->flip = !flip;
 167
 168        if (cur)
 169                nouveau_bo_unpin(cur);
 170
 171        return 0;
 172}
 173
 174static int
 175nv10_disable_plane(struct drm_plane *plane)
 176{
 177        struct nvif_object *dev = &nouveau_drm(plane->dev)->device.object;
 178        struct nouveau_plane *nv_plane =
 179                container_of(plane, struct nouveau_plane, base);
 180
 181        nvif_wr32(dev, NV_PVIDEO_STOP, 1);
 182        if (nv_plane->cur) {
 183                nouveau_bo_unpin(nv_plane->cur);
 184                nv_plane->cur = NULL;
 185        }
 186
 187        return 0;
 188}
 189
 190static void
 191nv_destroy_plane(struct drm_plane *plane)
 192{
 193        plane->funcs->disable_plane(plane);
 194        drm_plane_cleanup(plane);
 195        kfree(plane);
 196}
 197
 198static void
 199nv10_set_params(struct nouveau_plane *plane)
 200{
 201        struct nvif_object *dev = &nouveau_drm(plane->base.dev)->device.object;
 202        u32 luma = (plane->brightness - 512) << 16 | plane->contrast;
 203        u32 chroma = ((sin_mul(plane->hue, plane->saturation) & 0xffff) << 16) |
 204                (cos_mul(plane->hue, plane->saturation) & 0xffff);
 205        u32 format = 0;
 206
 207        nvif_wr32(dev, NV_PVIDEO_LUMINANCE(0), luma);
 208        nvif_wr32(dev, NV_PVIDEO_LUMINANCE(1), luma);
 209        nvif_wr32(dev, NV_PVIDEO_CHROMINANCE(0), chroma);
 210        nvif_wr32(dev, NV_PVIDEO_CHROMINANCE(1), chroma);
 211        nvif_wr32(dev, NV_PVIDEO_COLOR_KEY, plane->colorkey & 0xffffff);
 212
 213        if (plane->cur) {
 214                if (plane->iturbt_709)
 215                        format |= NV_PVIDEO_FORMAT_MATRIX_ITURBT709;
 216                if (plane->colorkey & (1 << 24))
 217                        format |= NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY;
 218                nvif_mask(dev, NV_PVIDEO_FORMAT(plane->flip),
 219                        NV_PVIDEO_FORMAT_MATRIX_ITURBT709 |
 220                        NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY,
 221                        format);
 222        }
 223}
 224
 225static int
 226nv_set_property(struct drm_plane *plane,
 227                struct drm_property *property,
 228                uint64_t value)
 229{
 230        struct nouveau_plane *nv_plane =
 231                container_of(plane, struct nouveau_plane, base);
 232
 233        if (property == nv_plane->props.colorkey)
 234                nv_plane->colorkey = value;
 235        else if (property == nv_plane->props.contrast)
 236                nv_plane->contrast = value;
 237        else if (property == nv_plane->props.brightness)
 238                nv_plane->brightness = value;
 239        else if (property == nv_plane->props.hue)
 240                nv_plane->hue = value;
 241        else if (property == nv_plane->props.saturation)
 242                nv_plane->saturation = value;
 243        else if (property == nv_plane->props.iturbt_709)
 244                nv_plane->iturbt_709 = value;
 245        else
 246                return -EINVAL;
 247
 248        if (nv_plane->set_params)
 249                nv_plane->set_params(nv_plane);
 250        return 0;
 251}
 252
 253static const struct drm_plane_funcs nv10_plane_funcs = {
 254        .update_plane = nv10_update_plane,
 255        .disable_plane = nv10_disable_plane,
 256        .set_property = nv_set_property,
 257        .destroy = nv_destroy_plane,
 258};
 259
 260static void
 261nv10_overlay_init(struct drm_device *device)
 262{
 263        struct nouveau_drm *drm = nouveau_drm(device);
 264        struct nouveau_plane *plane = kzalloc(sizeof(struct nouveau_plane), GFP_KERNEL);
 265        unsigned int num_formats = ARRAY_SIZE(formats);
 266        int ret;
 267
 268        if (!plane)
 269                return;
 270
 271        switch (drm->device.info.chipset) {
 272        case 0x10:
 273        case 0x11:
 274        case 0x15:
 275        case 0x1a:
 276        case 0x20:
 277                num_formats = 2;
 278                break;
 279        }
 280
 281        ret = drm_plane_init(device, &plane->base, 3 /* both crtc's */,
 282                             &nv10_plane_funcs,
 283                             formats, num_formats, false);
 284        if (ret)
 285                goto err;
 286
 287        /* Set up the plane properties */
 288        plane->props.colorkey = drm_property_create_range(
 289                        device, 0, "colorkey", 0, 0x01ffffff);
 290        plane->props.contrast = drm_property_create_range(
 291                        device, 0, "contrast", 0, 8192 - 1);
 292        plane->props.brightness = drm_property_create_range(
 293                        device, 0, "brightness", 0, 1024);
 294        plane->props.hue = drm_property_create_range(
 295                        device, 0, "hue", 0, 359);
 296        plane->props.saturation = drm_property_create_range(
 297                        device, 0, "saturation", 0, 8192 - 1);
 298        plane->props.iturbt_709 = drm_property_create_range(
 299                        device, 0, "iturbt_709", 0, 1);
 300        if (!plane->props.colorkey ||
 301            !plane->props.contrast ||
 302            !plane->props.brightness ||
 303            !plane->props.hue ||
 304            !plane->props.saturation ||
 305            !plane->props.iturbt_709)
 306                goto cleanup;
 307
 308        plane->colorkey = 0;
 309        drm_object_attach_property(&plane->base.base,
 310                                   plane->props.colorkey, plane->colorkey);
 311
 312        plane->contrast = 0x1000;
 313        drm_object_attach_property(&plane->base.base,
 314                                   plane->props.contrast, plane->contrast);
 315
 316        plane->brightness = 512;
 317        drm_object_attach_property(&plane->base.base,
 318                                   plane->props.brightness, plane->brightness);
 319
 320        plane->hue = 0;
 321        drm_object_attach_property(&plane->base.base,
 322                                   plane->props.hue, plane->hue);
 323
 324        plane->saturation = 0x1000;
 325        drm_object_attach_property(&plane->base.base,
 326                                   plane->props.saturation, plane->saturation);
 327
 328        plane->iturbt_709 = 0;
 329        drm_object_attach_property(&plane->base.base,
 330                                   plane->props.iturbt_709, plane->iturbt_709);
 331
 332        plane->set_params = nv10_set_params;
 333        nv10_set_params(plane);
 334        nv10_disable_plane(&plane->base);
 335        return;
 336cleanup:
 337        drm_plane_cleanup(&plane->base);
 338err:
 339        kfree(plane);
 340        NV_ERROR(drm, "Failed to create plane\n");
 341}
 342
 343static int
 344nv04_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
 345                  struct drm_framebuffer *fb, int crtc_x, int crtc_y,
 346                  unsigned int crtc_w, unsigned int crtc_h,
 347                  uint32_t src_x, uint32_t src_y,
 348                  uint32_t src_w, uint32_t src_h)
 349{
 350        struct nvif_object *dev = &nouveau_drm(plane->dev)->device.object;
 351        struct nouveau_plane *nv_plane =
 352                container_of(plane, struct nouveau_plane, base);
 353        struct nouveau_framebuffer *nv_fb = nouveau_framebuffer(fb);
 354        struct nouveau_bo *cur = nv_plane->cur;
 355        uint32_t overlay = 1;
 356        int brightness = (nv_plane->brightness - 512) * 62 / 512;
 357        int pitch, ret, i;
 358
 359        /* Source parameters given in 16.16 fixed point, ignore fractional. */
 360        src_x >>= 16;
 361        src_y >>= 16;
 362        src_w >>= 16;
 363        src_h >>= 16;
 364
 365        pitch = ALIGN(src_w * 4, 0x100);
 366
 367        if (pitch > 0xffff)
 368                return -ERANGE;
 369
 370        /* TODO: Compute an offset? Not sure how to do this for YUYV. */
 371        if (src_x != 0 || src_y != 0)
 372                return -ERANGE;
 373
 374        if (crtc_w < src_w || crtc_h < src_h)
 375                return -ERANGE;
 376
 377        ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM, false);
 378        if (ret)
 379                return ret;
 380
 381        nv_plane->cur = nv_fb->nvbo;
 382
 383        nvif_wr32(dev, NV_PVIDEO_OE_STATE, 0);
 384        nvif_wr32(dev, NV_PVIDEO_SU_STATE, 0);
 385        nvif_wr32(dev, NV_PVIDEO_RM_STATE, 0);
 386
 387        for (i = 0; i < 2; i++) {
 388                nvif_wr32(dev, NV_PVIDEO_BUFF0_START_ADDRESS + 4 * i,
 389                        nv_fb->nvbo->bo.offset);
 390                nvif_wr32(dev, NV_PVIDEO_BUFF0_PITCH_LENGTH + 4 * i, pitch);
 391                nvif_wr32(dev, NV_PVIDEO_BUFF0_OFFSET + 4 * i, 0);
 392        }
 393        nvif_wr32(dev, NV_PVIDEO_WINDOW_START, crtc_y << 16 | crtc_x);
 394        nvif_wr32(dev, NV_PVIDEO_WINDOW_SIZE, crtc_h << 16 | crtc_w);
 395        nvif_wr32(dev, NV_PVIDEO_STEP_SIZE,
 396                (uint32_t)(((src_h - 1) << 11) / (crtc_h - 1)) << 16 | (uint32_t)(((src_w - 1) << 11) / (crtc_w - 1)));
 397
 398        /* It should be possible to convert hue/contrast to this */
 399        nvif_wr32(dev, NV_PVIDEO_RED_CSC_OFFSET, 0x69 - brightness);
 400        nvif_wr32(dev, NV_PVIDEO_GREEN_CSC_OFFSET, 0x3e + brightness);
 401        nvif_wr32(dev, NV_PVIDEO_BLUE_CSC_OFFSET, 0x89 - brightness);
 402        nvif_wr32(dev, NV_PVIDEO_CSC_ADJUST, 0);
 403
 404        nvif_wr32(dev, NV_PVIDEO_CONTROL_Y, 0x001); /* (BLUR_ON, LINE_HALF) */
 405        nvif_wr32(dev, NV_PVIDEO_CONTROL_X, 0x111); /* (WEIGHT_HEAVY, SHARPENING_ON, SMOOTHING_ON) */
 406
 407        nvif_wr32(dev, NV_PVIDEO_FIFO_BURST_LENGTH, 0x03);
 408        nvif_wr32(dev, NV_PVIDEO_FIFO_THRES_SIZE, 0x38);
 409
 410        nvif_wr32(dev, NV_PVIDEO_KEY, nv_plane->colorkey);
 411
 412        if (nv_plane->colorkey & (1 << 24))
 413                overlay |= 0x10;
 414        if (fb->pixel_format == DRM_FORMAT_YUYV)
 415                overlay |= 0x100;
 416
 417        nvif_wr32(dev, NV_PVIDEO_OVERLAY, overlay);
 418
 419        nvif_wr32(dev, NV_PVIDEO_SU_STATE, nvif_rd32(dev, NV_PVIDEO_SU_STATE) ^ (1 << 16));
 420
 421        if (cur)
 422                nouveau_bo_unpin(cur);
 423
 424        return 0;
 425}
 426
 427static int
 428nv04_disable_plane(struct drm_plane *plane)
 429{
 430        struct nvif_object *dev = &nouveau_drm(plane->dev)->device.object;
 431        struct nouveau_plane *nv_plane =
 432                container_of(plane, struct nouveau_plane, base);
 433
 434        nvif_mask(dev, NV_PVIDEO_OVERLAY, 1, 0);
 435        nvif_wr32(dev, NV_PVIDEO_OE_STATE, 0);
 436        nvif_wr32(dev, NV_PVIDEO_SU_STATE, 0);
 437        nvif_wr32(dev, NV_PVIDEO_RM_STATE, 0);
 438        if (nv_plane->cur) {
 439                nouveau_bo_unpin(nv_plane->cur);
 440                nv_plane->cur = NULL;
 441        }
 442
 443        return 0;
 444}
 445
 446static const struct drm_plane_funcs nv04_plane_funcs = {
 447        .update_plane = nv04_update_plane,
 448        .disable_plane = nv04_disable_plane,
 449        .set_property = nv_set_property,
 450        .destroy = nv_destroy_plane,
 451};
 452
 453static void
 454nv04_overlay_init(struct drm_device *device)
 455{
 456        struct nouveau_drm *drm = nouveau_drm(device);
 457        struct nouveau_plane *plane = kzalloc(sizeof(struct nouveau_plane), GFP_KERNEL);
 458        int ret;
 459
 460        if (!plane)
 461                return;
 462
 463        ret = drm_plane_init(device, &plane->base, 1 /* single crtc */,
 464                             &nv04_plane_funcs,
 465                             formats, 2, false);
 466        if (ret)
 467                goto err;
 468
 469        /* Set up the plane properties */
 470        plane->props.colorkey = drm_property_create_range(
 471                        device, 0, "colorkey", 0, 0x01ffffff);
 472        plane->props.brightness = drm_property_create_range(
 473                        device, 0, "brightness", 0, 1024);
 474        if (!plane->props.colorkey ||
 475            !plane->props.brightness)
 476                goto cleanup;
 477
 478        plane->colorkey = 0;
 479        drm_object_attach_property(&plane->base.base,
 480                                   plane->props.colorkey, plane->colorkey);
 481
 482        plane->brightness = 512;
 483        drm_object_attach_property(&plane->base.base,
 484                                   plane->props.brightness, plane->brightness);
 485
 486        nv04_disable_plane(&plane->base);
 487        return;
 488cleanup:
 489        drm_plane_cleanup(&plane->base);
 490err:
 491        kfree(plane);
 492        NV_ERROR(drm, "Failed to create plane\n");
 493}
 494
 495void
 496nouveau_overlay_init(struct drm_device *device)
 497{
 498        struct nvif_device *dev = &nouveau_drm(device)->device;
 499        if (dev->info.chipset < 0x10)
 500                nv04_overlay_init(device);
 501        else if (dev->info.chipset <= 0x40)
 502                nv10_overlay_init(device);
 503}
 504