96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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* Copyright 2018 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "lut.h"
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#include "disp.h"
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#include <drm/drm_color_mgmt.h>
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#include <drm/drm_mode.h>
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#include <drm/drm_property.h>
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#include <nvif/class.h>
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u32
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nv50_lut_load(struct nv50_lut *lut, bool legacy, int buffer,
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struct drm_property_blob *blob)
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{
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struct drm_color_lut *in = (struct drm_color_lut *)blob->data;
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void __iomem *mem = lut->mem[buffer].object.map.ptr;
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const int size = blob->length / sizeof(*in);
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int bits, shift, i;
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u16 zero, r, g, b;
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u32 addr = lut->mem[buffer].addr;
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/* This can't happen.. But it shuts the compiler up. */
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if (WARN_ON(size != 256))
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return 0;
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if (legacy) {
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bits = 11;
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shift = 3;
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zero = 0x0000;
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} else {
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bits = 14;
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shift = 0;
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zero = 0x6000;
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}
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for (i = 0; i < size; i++) {
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r = (drm_color_lut_extract(in[i]. red, bits) + zero) << shift;
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g = (drm_color_lut_extract(in[i].green, bits) + zero) << shift;
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b = (drm_color_lut_extract(in[i]. blue, bits) + zero) << shift;
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writew(r, mem + (i * 0x08) + 0);
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writew(g, mem + (i * 0x08) + 2);
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writew(b, mem + (i * 0x08) + 4);
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}
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/* INTERPOLATE modes require a "next" entry to interpolate with,
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* so we replicate the last entry to deal with this for now.
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*/
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writew(r, mem + (i * 0x08) + 0);
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writew(g, mem + (i * 0x08) + 2);
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writew(b, mem + (i * 0x08) + 4);
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return addr;
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}
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void
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nv50_lut_fini(struct nv50_lut *lut)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(lut->mem); i++)
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nvif_mem_fini(&lut->mem[i]);
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}
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int
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nv50_lut_init(struct nv50_disp *disp, struct nvif_mmu *mmu,
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struct nv50_lut *lut)
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{
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const u32 size = disp->disp->object.oclass < GF110_DISP ? 257 : 1025;
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int i;
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for (i = 0; i < ARRAY_SIZE(lut->mem); i++) {
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int ret = nvif_mem_init_map(mmu, NVIF_MEM_VRAM, size * 8,
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&lut->mem[i]);
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if (ret)
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return ret;
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}
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return 0;
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}
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