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_NV12,
  62         DRM_FORMAT_UYVY,
  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 format = ALIGN(src_w * 4, 0x100);
 103         int soff = NV_PCRTC0_SIZE * nv_crtc->index;
 104         int soff2 = NV_PCRTC0_SIZE * !nv_crtc->index;
 105         int ret;
 106
 107         if (format > 0xffff)
 108                 return -EINVAL;
 109
 110         ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM);
 111         if (ret)
 112                 return ret;
 113
 114         nv_plane->cur = nv_fb->nvbo;
 115
 116         /* Source parameters given in 16.16 fixed point, ignore fractional. */
 117         src_x = src_x >> 16;
 118         src_y = src_y >> 16;
 119         src_w = src_w >> 16;
 120         src_h = src_h >> 16;
 121
 122         nv_mask(dev, NV_PCRTC_ENGINE_CTRL + soff, NV_CRTC_FSEL_OVERLAY, NV_CRTC_FSEL_OVERLAY);
 123         nv_mask(dev, NV_PCRTC_ENGINE_CTRL + soff2, NV_CRTC_FSEL_OVERLAY, 0);
 124
 125         nv_wr32(dev, NV_PVIDEO_BASE(flip), 0);
 126         nv_wr32(dev, NV_PVIDEO_OFFSET_BUFF(flip), nv_fb->nvbo->bo.offset);
 127         nv_wr32(dev, NV_PVIDEO_SIZE_IN(flip), src_h << 16 | src_w);
 128         nv_wr32(dev, NV_PVIDEO_POINT_IN(flip), src_y << 16 | src_x);
 129         nv_wr32(dev, NV_PVIDEO_DS_DX(flip), (src_w << 20) / crtc_w);
 130         nv_wr32(dev, NV_PVIDEO_DT_DY(flip), (src_h << 20) / crtc_h);
 131         nv_wr32(dev, NV_PVIDEO_POINT_OUT(flip), crtc_y << 16 | crtc_x);
 132         nv_wr32(dev, NV_PVIDEO_SIZE_OUT(flip), crtc_h << 16 | crtc_w);
 133
 134         if (fb->pixel_format == DRM_FORMAT_NV12) {
 135                 format |= NV_PVIDEO_FORMAT_COLOR_LE_CR8YB8CB8YA8;
 136                 format |= NV_PVIDEO_FORMAT_PLANAR;
 137         }
 138         if (nv_plane->iturbt_709)
 139                 format |= NV_PVIDEO_FORMAT_MATRIX_ITURBT709;
 140         if (nv_plane->colorkey & (1 << 24))
 141                 format |= NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY;
 142
 143         if (fb->pixel_format == DRM_FORMAT_NV12) {
 144                 nv_wr32(dev, NV_PVIDEO_UVPLANE_BASE(flip), 0);
 145                 nv_wr32(dev, NV_PVIDEO_UVPLANE_OFFSET_BUFF(flip),
 146                         nv_fb->nvbo->bo.offset + fb->offsets[1]);
 147         }
 148         nv_wr32(dev, NV_PVIDEO_FORMAT(flip), format);
 149         nv_wr32(dev, NV_PVIDEO_STOP, 0);
 150         /* TODO: wait for vblank? */
 151         nv_wr32(dev, NV_PVIDEO_BUFFER, flip ? 0x10 : 0x1);
 152         nv_plane->flip = !flip;
 153
 154         if (cur)
 155                 nouveau_bo_unpin(cur);
 156
 157         return 0;
 158 }
 159
 160 static int
 161 nv10_disable_plane(struct drm_plane *plane)
 162 {
 163         struct nouveau_device *dev = nouveau_dev(plane->dev);
 164         struct nouveau_plane *nv_plane = (struct nouveau_plane *)plane;
 165
 166         nv_wr32(dev, NV_PVIDEO_STOP, 1);
 167         if (nv_plane->cur) {
 168                 nouveau_bo_unpin(nv_plane->cur);
 169                 nv_plane->cur = NULL;
 170         }
 171
 172         return 0;
 173 }
 174
 175 static void
 176 nv10_destroy_plane(struct drm_plane *plane)
 177 {
 178         nv10_disable_plane(plane);
 179         drm_plane_cleanup(plane);
 180         kfree(plane);
 181 }
 182
 183 static void
 184 nv10_set_params(struct nouveau_plane *plane)
 185 {
 186         struct nouveau_device *dev = nouveau_dev(plane->base.dev);
 187         u32 luma = (plane->brightness - 512) << 16 | plane->contrast;
 188         u32 chroma = ((sin_mul(plane->hue, plane->saturation) & 0xffff) << 16) |
 189                 (cos_mul(plane->hue, plane->saturation) & 0xffff);
 190         u32 format = 0;
 191
 192         nv_wr32(dev, NV_PVIDEO_LUMINANCE(0), luma);
 193         nv_wr32(dev, NV_PVIDEO_LUMINANCE(1), luma);
 194         nv_wr32(dev, NV_PVIDEO_CHROMINANCE(0), chroma);
 195         nv_wr32(dev, NV_PVIDEO_CHROMINANCE(1), chroma);
 196         nv_wr32(dev, NV_PVIDEO_COLOR_KEY, plane->colorkey & 0xffffff);
 197
 198         if (plane->cur) {
 199                 if (plane->iturbt_709)
 200                         format |= NV_PVIDEO_FORMAT_MATRIX_ITURBT709;
 201                 if (plane->colorkey & (1 << 24))
 202                         format |= NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY;
 203                 nv_mask(dev, NV_PVIDEO_FORMAT(plane->flip),
 204                         NV_PVIDEO_FORMAT_MATRIX_ITURBT709 |
 205                         NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY,
 206                         format);
 207         }
 208 }
 209
 210 static int
 211 nv10_set_property(struct drm_plane *plane,
 212                   struct drm_property *property,
 213                   uint64_t value)
 214 {
 215         struct nouveau_plane *nv_plane = (struct nouveau_plane *)plane;
 216
 217         if (property == nv_plane->props.colorkey)
 218                 nv_plane->colorkey = value;
 219         else if (property == nv_plane->props.contrast)
 220                 nv_plane->contrast = value;
 221         else if (property == nv_plane->props.brightness)
 222                 nv_plane->brightness = value;
 223         else if (property == nv_plane->props.hue)
 224                 nv_plane->hue = value;
 225         else if (property == nv_plane->props.saturation)
 226                 nv_plane->saturation = value;
 227         else if (property == nv_plane->props.iturbt_709)
 228                 nv_plane->iturbt_709 = value;
 229         else
 230                 return -EINVAL;
 231
 232         nv10_set_params(nv_plane);
 233         return 0;
 234 }
 235
 236 static const struct drm_plane_funcs nv10_plane_funcs = {
 237         .update_plane = nv10_update_plane,
 238         .disable_plane = nv10_disable_plane,
 239         .set_property = nv10_set_property,
 240         .destroy = nv10_destroy_plane,
 241 };
 242
 243 static void
 244 nv10_overlay_init(struct drm_device *device)
 245 {
 246         struct nouveau_device *dev = nouveau_dev(device);
 247         struct nouveau_plane *plane = kzalloc(sizeof(struct nouveau_plane), GFP_KERNEL);
 248         int ret;
 249
 250         if (!plane)
 251                 return;
 252
 253         ret = drm_plane_init(device, &plane->base, 3 /* both crtc's */,
 254                              &nv10_plane_funcs,
 255                              formats, ARRAY_SIZE(formats), false);
 256         if (ret)
 257                 goto err;
 258
 259         /* Set up the plane properties */
 260         plane->props.colorkey = drm_property_create_range(
 261                         device, 0, "colorkey", 0, 0x01ffffff);
 262         plane->props.contrast = drm_property_create_range(
 263                         device, 0, "contrast", 0, 8192 - 1);
 264         plane->props.brightness = drm_property_create_range(
 265                         device, 0, "brightness", 0, 1024);
 266         plane->props.hue = drm_property_create_range(
 267                         device, 0, "hue", 0, 359);
 268         plane->props.saturation = drm_property_create_range(
 269                         device, 0, "saturation", 0, 8192 - 1);
 270         plane->props.iturbt_709 = drm_property_create_range(
 271                         device, 0, "iturbt_709", 0, 1);
 272         if (!plane->props.colorkey ||
 273             !plane->props.contrast ||
 274             !plane->props.brightness ||
 275             !plane->props.hue ||
 276             !plane->props.saturation ||
 277             !plane->props.iturbt_709)
 278                 goto cleanup;
 279
 280         plane->colorkey = 0;
 281         drm_object_attach_property(&plane->base.base,
 282                                    plane->props.colorkey, plane->colorkey);
 283
 284         plane->contrast = 0x1000;
 285         drm_object_attach_property(&plane->base.base,
 286                                    plane->props.contrast, plane->contrast);
 287
 288         plane->brightness = 512;
 289         drm_object_attach_property(&plane->base.base,
 290                                    plane->props.brightness, plane->brightness);
 291
 292         plane->hue = 0;
 293         drm_object_attach_property(&plane->base.base,
 294                                    plane->props.hue, plane->hue);
 295
 296         plane->saturation = 0x1000;
 297         drm_object_attach_property(&plane->base.base,
 298                                    plane->props.saturation, plane->saturation);
 299
 300         plane->iturbt_709 = 0;
 301         drm_object_attach_property(&plane->base.base,
 302                                    plane->props.iturbt_709, plane->iturbt_709);
 303
 304         nv10_set_params(plane);
 305         nv_wr32(dev, NV_PVIDEO_STOP, 1);
 306         return;
 307 cleanup:
 308         drm_plane_cleanup(&plane->base);
 309 err:
 310         kfree(plane);
 311         nv_error(dev, "Failed to create plane\n");
 312 }
 313
 314 void
 315 nouveau_overlay_init(struct drm_device *device)
 316 {
 317         struct nouveau_device *dev = nouveau_dev(device);
 318         if (dev->chipset >= 0x10 && dev->chipset <= 0x40)
 319                 nv10_overlay_init(device);
 320 }