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_dtor(&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_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 | |