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
31u32
32nv50_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
58void
59nv50_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
66int
67nv50_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