/* * Copyright 2018 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE.
*/ #include"head.h" #include"atom.h" #include"core.h"
/*XXX: This is a dirty hack until OR depth handling is * improved later for deep colour etc.
*/ switch (asyh->or.depth) { case 6: depth = 5; break; case 5: depth = 4; break; case 2: depth = 1; break; case 0: depth = 4; break; default:
depth = asyh->or.depth;
WARN_ON(1); break;
}
staticvoid
headc57d_olut_load_8(struct drm_color_lut *in, int size, void __iomem *mem)
{
memset_io(mem, 0x00, 0x20); /* VSS header. */
mem += 0x20;
while (size--) {
u16 r = drm_color_lut_extract(in-> red + 0, 16);
u16 g = drm_color_lut_extract(in->green + 0, 16);
u16 b = drm_color_lut_extract(in-> blue + 0, 16);
u16 ri = 0, gi = 0, bi = 0, i;
if (in++, size) {
ri = (drm_color_lut_extract(in-> red, 16) - r) / 4;
gi = (drm_color_lut_extract(in->green, 16) - g) / 4;
bi = (drm_color_lut_extract(in-> blue, 16) - b) / 4;
}
for (i = 0; i < 4; i++, mem += 8) {
writew(r + ri * i, mem + 0);
writew(g + gi * i, mem + 2);
writew(b + bi * i, mem + 4);
}
}
/* INTERPOLATE modes require a "next" entry to interpolate with, * so we replicate the last entry to deal with this for now.
*/
writew(readw(mem - 8), mem + 0);
writew(readw(mem - 6), mem + 2);
writew(readw(mem - 4), mem + 4);
}
staticvoid
headc57d_olut_load(struct drm_color_lut *in, int size, void __iomem *mem)
{
memset_io(mem, 0x00, 0x20); /* VSS header. */
mem += 0x20;
for (; size--; in++, mem += 0x08) {
writew(drm_color_lut_extract(in-> red, 16), mem + 0);
writew(drm_color_lut_extract(in->green, 16), mem + 2);
writew(drm_color_lut_extract(in-> blue, 16), mem + 4);
}
/* INTERPOLATE modes require a "next" entry to interpolate with, * so we replicate the last entry to deal with this for now.
*/
writew(readw(mem - 8), mem + 0);
writew(readw(mem - 6), mem + 2);
writew(readw(mem - 4), mem + 4);
}
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