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1/*2 * Copyright 2018 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 */22#include "lut.h"23#include "disp.h"24 25#include <drm/drm_color_mgmt.h>26#include <drm/drm_mode.h>27#include <drm/drm_property.h>28 29#include <nvif/class.h>30 31u3232nv50_lut_load(struct nv50_lut *lut, int buffer, struct drm_property_blob *blob,33 void (*load)(struct drm_color_lut *, int, void __iomem *))34{35 struct drm_color_lut *in = blob ? blob->data : NULL;36 void __iomem *mem = lut->mem[buffer].object.map.ptr;37 const u32 addr = lut->mem[buffer].addr;38 int i;39 40 if (!in) {41 in = kvmalloc_array(1024, sizeof(*in), GFP_KERNEL);42 if (!WARN_ON(!in)) {43 for (i = 0; i < 1024; i++) {44 in[i].red =45 in[i].green =46 in[i].blue = (i << 16) >> 10;47 }48 load(in, 1024, mem);49 kvfree(in);50 }51 } else {52 load(in, drm_color_lut_size(blob), mem);53 }54 55 return addr;56}57 58void59nv50_lut_fini(struct nv50_lut *lut)60{61 int i;62 for (i = 0; i < ARRAY_SIZE(lut->mem); i++)63 nvif_mem_dtor(&lut->mem[i]);64}65 66int67nv50_lut_init(struct nv50_disp *disp, struct nvif_mmu *mmu,68 struct nv50_lut *lut)69{70 const u32 size = disp->disp->object.oclass < GF110_DISP ? 257 : 1025;71 int i;72 for (i = 0; i < ARRAY_SIZE(lut->mem); i++) {73 int ret = nvif_mem_ctor_map(mmu, "kmsLut", NVIF_MEM_VRAM,74 size * 8, &lut->mem[i]);75 if (ret)76 return ret;77 }78 return 0;79}80