drivers/gpu/drm/nouveau/dispnv04/overlay.c

   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
  38 struct 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
  60 static uint32_t formats[] = {
  61         DRM_FORMAT_UYVY,
  62         DRM_FORMAT_NV12,
  63 };
  64
  65 /* Sine can be approximated with
  66  * http://en.wikipedia.org/wiki/Bhaskara_I's_sine_approximation_formula
  67  * sin(x degrees) ~= 4 x (180 - x) / (40500 - x (180 - x) )
  68  * Note that this only works for the range [0, 180].
  69  * Also note that sin(x) == -sin(x - 180)
  70  */
  71 static inline int
  72 sin_mul(int degrees, int factor)
  73 {
  74         if (degrees > 180) {
  75                 degrees -= 180;
  76                 factor *= -1;
  77         }
  78         return factor * 4 * degrees * (180 - degrees) /
  79                 (40500 - degrees * (180 - degrees));
  80 }
  81
  82 /* cos(x) = sin(x + 90) */
  83 static inline int
  84 cos_mul(int degrees, int factor)
  85 {
  86         return sin_mul((degrees + 90) % 360, factor);
  87 }
  88
  89 static int
  90 nv10_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
  91                   struct drm_framebuffer *fb, int crtc_x, int crtc_y,
  92                   unsigned int crtc_w, unsigned int crtc_h,
  93                   uint32_t src_x, uint32_t src_y,
  94                   uint32_t src_w, uint32_t src_h)
  95 {
  96         struct nouveau_device *dev = nouveau_dev(plane->dev);
  97         struct nouveau_plane *nv_plane = (struct nouveau_plane *)plane;
  98         struct nouveau_framebuffer *nv_fb = nouveau_framebuffer(fb);
  99         struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 100         struct nouveau_bo *cur = nv_plane->cur;
 101         bool flip = nv_plane->flip;
 102         int soff = NV_PCRTC0_SIZE * nv_crtc->index;
 103         int soff2 = NV_PCRTC0_SIZE * !nv_crtc->index;
 104         int format, ret;
 105
 106         /* Source parameters given in 16.16 fixed point, ignore fractional. */
 107         src_x >>= 16;
 108         src_y >>= 16;
 109         src_w >>= 16;
 110         src_h >>= 16;
 111
 112         format = ALIGN(src_w * 4, 0x100);
 113
 114         if (format > 0xffff)
 115                 return -ERANGE;
 116
 117         if (dev->chipset >= 0x30) {
 118                 if (crtc_w < (src_w >> 1) || crtc_h < (src_h >> 1))
 119                         return -ERANGE;
 120         } else {
 121                 if (crtc_w < (src_w >> 3) || crtc_h < (src_h >> 3))
 122                         return -ERANGE;
 123         }
 124
 125         ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM);
 126         if (ret)
 127                 return ret;
 128
 129         nv_plane->cur = nv_fb->nvbo;
 130
 131         nv_mask(dev, NV_PCRTC_ENGINE_CTRL + soff, NV_CRTC_FSEL_OVERLAY, NV_CRTC_FSEL_OVERLAY);
 132         nv_mask(dev, NV_PCRTC_ENGINE_CTRL + soff2, NV_CRTC_FSEL_OVERLAY, 0);
 133
 134         nv_wr32(dev, NV_PVIDEO_BASE(flip), 0);
 135         nv_wr32(dev, NV_PVIDEO_OFFSET_BUFF(flip), nv_fb->nvbo->bo.offset);
 136         nv_wr32(dev, NV_PVIDEO_SIZE_IN(flip), src_h << 16 | src_w);
 137         nv_wr32(dev, NV_PVIDEO_POINT_IN(flip), src_y << 16 | src_x);
 138         nv_wr32(dev, NV_PVIDEO_DS_DX(flip), (src_w << 20) / crtc_w);
 139         nv_wr32(dev, NV_PVIDEO_DT_DY(flip), (src_h << 20) / crtc_h);
 140         nv_wr32(dev, NV_PVIDEO_POINT_OUT(flip), crtc_y << 16 | crtc_x);
 141         nv_wr32(dev, NV_PVIDEO_SIZE_OUT(flip), crtc_h << 16 | crtc_w);
 142
 143         if (fb->pixel_format == DRM_FORMAT_NV12) {
 144                 format |= NV_PVIDEO_FORMAT_COLOR_LE_CR8YB8CB8YA8;
 145                 format |= NV_PVIDEO_FORMAT_PLANAR;
 146         }
 147         if (nv_plane->iturbt_709)
 148                 format |= NV_PVIDEO_FORMAT_MATRIX_ITURBT709;
 149         if (nv_plane->colorkey & (1 << 24))
 150                 format |= NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY;
 151
 152         if (fb->pixel_format == DRM_FORMAT_NV12) {
 153                 nv_wr32(dev, NV_PVIDEO_UVPLANE_BASE(flip), 0);
 154                 nv_wr32(dev, NV_PVIDEO_UVPLANE_OFFSET_BUFF(flip),
 155                         nv_fb->nvbo->bo.offset + fb->offsets[1]);
 156         }
 157         nv_wr32(dev, NV_PVIDEO_FORMAT(flip), format);
 158         nv_wr32(dev, NV_PVIDEO_STOP, 0);
 159         /* TODO: wait for vblank? */
 160         nv_wr32(dev, NV_PVIDEO_BUFFER, flip ? 0x10 : 0x1);
 161         nv_plane->flip = !flip;
 162
 163         if (cur)
 164                 nouveau_bo_unpin(cur);
 165
 166         return 0;
 167 }
 168
 169 static int
 170 nv10_disable_plane(struct drm_plane *plane)
 171 {
 172         struct nouveau_device *dev = nouveau_dev(plane->dev);
 173         struct nouveau_plane *nv_plane = (struct nouveau_plane *)plane;
 174
 175         nv_wr32(dev, NV_PVIDEO_STOP, 1);
 176         if (nv_plane->cur) {
 177                 nouveau_bo_unpin(nv_plane->cur);
 178                 nv_plane->cur = NULL;
 179         }
 180
 181         return 0;
 182 }
 183
 184 static void
 185 nv10_destroy_plane(struct drm_plane *plane)
 186 {
 187         nv10_disable_plane(plane);
 188         drm_plane_cleanup(plane);
 189         kfree(plane);
 190 }
 191
 192 static void
 193 nv10_set_params(struct nouveau_plane *plane)
 194 {
 195         struct nouveau_device *dev = nouveau_dev(plane->base.dev);
 196         u32 luma = (plane->brightness - 512) << 16 | plane->contrast;
 197         u32 chroma = ((sin_mul(plane->hue, plane->saturation) & 0xffff) << 16) |
 198                 (cos_mul(plane->hue, plane->saturation) & 0xffff);
 199         u32 format = 0;
 200
 201         nv_wr32(dev, NV_PVIDEO_LUMINANCE(0), luma);
 202         nv_wr32(dev, NV_PVIDEO_LUMINANCE(1), luma);
 203         nv_wr32(dev, NV_PVIDEO_CHROMINANCE(0), chroma);
 204         nv_wr32(dev, NV_PVIDEO_CHROMINANCE(1), chroma);
 205         nv_wr32(dev, NV_PVIDEO_COLOR_KEY, plane->colorkey & 0xffffff);
 206
 207         if (plane->cur) {
 208                 if (plane->iturbt_709)
 209                         format |= NV_PVIDEO_FORMAT_MATRIX_ITURBT709;
 210                 if (plane->colorkey & (1 << 24))
 211                         format |= NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY;
 212                 nv_mask(dev, NV_PVIDEO_FORMAT(plane->flip),
 213                         NV_PVIDEO_FORMAT_MATRIX_ITURBT709 |
 214                         NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY,
 215                         format);
 216         }
 217 }
 218
 219 static int
 220 nv10_set_property(struct drm_plane *plane,
 221                   struct drm_property *property,
 222                   uint64_t value)
 223 {
 224         struct nouveau_plane *nv_plane = (struct nouveau_plane *)plane;
 225
 226         if (property == nv_plane->props.colorkey)
 227                 nv_plane->colorkey = value;
 228         else if (property == nv_plane->props.contrast)
 229                 nv_plane->contrast = value;
 230         else if (property == nv_plane->props.brightness)
 231                 nv_plane->brightness = value;
 232         else if (property == nv_plane->props.hue)
 233                 nv_plane->hue = value;
 234         else if (property == nv_plane->props.saturation)
 235                 nv_plane->saturation = value;
 236         else if (property == nv_plane->props.iturbt_709)
 237                 nv_plane->iturbt_709 = value;
 238         else
 239                 return -EINVAL;
 240
 241         nv10_set_params(nv_plane);
 242         return 0;
 243 }
 244
 245 static const struct drm_plane_funcs nv10_plane_funcs = {
 246         .update_plane = nv10_update_plane,
 247         .disable_plane = nv10_disable_plane,
 248         .set_property = nv10_set_property,
 249         .destroy = nv10_destroy_plane,
 250 };
 251
 252 static void
 253 nv10_overlay_init(struct drm_device *device)
 254 {
 255         struct nouveau_device *dev = nouveau_dev(device);
 256         struct nouveau_plane *plane = kzalloc(sizeof(struct nouveau_plane), GFP_KERNEL);
 257         int num_formats = ARRAY_SIZE(formats);
 258         int ret;
 259
 260         if (!plane)
 261                 return;
 262
 263         switch (dev->chipset) {
 264         case 0x10:
 265         case 0x11:
 266         case 0x15:
 267         case 0x1a:
 268         case 0x20:
 269                 num_formats = 1;
 270                 break;
 271         }
 272
 273         ret = drm_plane_init(device, &plane->base, 3 /* both crtc's */,
 274                              &nv10_plane_funcs,
 275                              formats, num_formats, false);
 276         if (ret)
 277                 goto err;
 278
 279         /* Set up the plane properties */
 280         plane->props.colorkey = drm_property_create_range(
 281                         device, 0, "colorkey", 0, 0x01ffffff);
 282         plane->props.contrast = drm_property_create_range(
 283                         device, 0, "contrast", 0, 8192 - 1);
 284         plane->props.brightness = drm_property_create_range(
 285                         device, 0, "brightness", 0, 1024);
 286         plane->props.hue = drm_property_create_range(
 287                         device, 0, "hue", 0, 359);
 288         plane->props.saturation = drm_property_create_range(
 289                         device, 0, "saturation", 0, 8192 - 1);
 290         plane->props.iturbt_709 = drm_property_create_range(
 291                         device, 0, "iturbt_709", 0, 1);
 292         if (!plane->props.colorkey ||
 293             !plane->props.contrast ||
 294             !plane->props.brightness ||
 295             !plane->props.hue ||
 296             !plane->props.saturation ||
 297             !plane->props.iturbt_709)
 298                 goto cleanup;
 299
 300         plane->colorkey = 0;
 301         drm_object_attach_property(&plane->base.base,
 302                                    plane->props.colorkey, plane->colorkey);
 303
 304         plane->contrast = 0x1000;
 305         drm_object_attach_property(&plane->base.base,
 306                                    plane->props.contrast, plane->contrast);
 307
 308         plane->brightness = 512;
 309         drm_object_attach_property(&plane->base.base,
 310                                    plane->props.brightness, plane->brightness);
 311
 312         plane->hue = 0;
 313         drm_object_attach_property(&plane->base.base,
 314                                    plane->props.hue, plane->hue);
 315
 316         plane->saturation = 0x1000;
 317         drm_object_attach_property(&plane->base.base,
 318                                    plane->props.saturation, plane->saturation);
 319
 320         plane->iturbt_709 = 0;
 321         drm_object_attach_property(&plane->base.base,
 322                                    plane->props.iturbt_709, plane->iturbt_709);
 323
 324         nv10_set_params(plane);
 325         nv_wr32(dev, NV_PVIDEO_STOP, 1);
 326         return;
 327 cleanup:
 328         drm_plane_cleanup(&plane->base);
 329 err:
 330         kfree(plane);
 331         nv_error(dev, "Failed to create plane\n");
 332 }
 333
 334 void
 335 nouveau_overlay_init(struct drm_device *device)
 336 {
 337         struct nouveau_device *dev = nouveau_dev(device);
 338         if (dev->chipset >= 0x10 && dev->chipset <= 0x40)
 339                 nv10_overlay_init(device);
 340 }