/* * 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 "lut.h" #include "disp.h" #include <drm/drm_color_mgmt.h> #include <drm/drm_mode.h> #include <drm/drm_property.h> #include <nvif/class.h> u32 nv50_lut_load(struct nv50_lut *lut, int buffer, struct drm_property_blob *blob, void (*load)(struct drm_color_lut *, int, void __iomem *)) { struct drm_color_lut *in = blob ? blob->data : NULL; void __iomem *mem = lut->mem[buffer].object.map.ptr; const u32 addr = lut->mem[buffer].addr; int i; if (!in) { in = kvmalloc_array(1024, sizeof(*in), GFP_KERNEL); if (!WARN_ON(!in)) { for (i = 0; i < 1024; i++) { in[i].red = in[i].green = in[i].blue = (i << 16) >> 10; } load(in, 1024, mem); kvfree(in); } } else { load(in, drm_color_lut_size(blob), mem); } return addr; } void nv50_lut_fini(struct nv50_lut *lut) { int i; for (i = 0; i < ARRAY_SIZE(lut->mem); i++) nvif_mem_fini(&lut->mem[i]); } int nv50_lut_init(struct nv50_disp *disp, struct nvif_mmu *mmu, struct nv50_lut *lut) { const u32 size = disp->disp->object.oclass < GF110_DISP ? 257 : 1025; int i; for (i = 0; i < ARRAY_SIZE(lut->mem); i++) { int ret = nvif_mem_init_map(mmu, NVIF_MEM_VRAM, size * 8, &lut->mem[i]); if (ret) return ret; } return 0; }