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, blob->length / sizeof(*in), 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 }