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/*
* 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_dtor(&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_ctor_map(mmu, "kmsLut", NVIF_MEM_VRAM,
size * 8, &lut->mem[i]);
if (ret)
return ret;
}
return 0;
}
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