1 /* 2 * Copyright 2018 Red Hat Inc. 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * 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 OR 20 * 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 31 u32 32 nv50_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 58 void 59 nv50_lut_fini(struct nv50_lut *lut) 60 { 61 int i; 62 for (i = 0; i < ARRAY_SIZE(lut->mem); i++) 63 nvif_mem_fini(&lut->mem[i]); 64 } 65 66 int 67 nv50_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_init_map(mmu, NVIF_MEM_VRAM, size * 8, 74 &lut->mem[i]); 75 if (ret) 76 return ret; 77 } 78 return 0; 79 } 80