xref: /linux/drivers/gpu/drm/nouveau/nvkm/subdev/fuse/gm107.c (revision c5dbf04160005e07e8ca7232a7faa77ab1547ae0)
1 /*
2  * Copyright 2014 Martin Peres
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  * Authors: Martin Peres
23  */
24 #include "priv.h"
25 
26 #include <subdev/gsp.h>
27 
28 static u32
29 gm107_fuse_read(struct nvkm_fuse *fuse, u32 addr)
30 {
31 	struct nvkm_device *device = fuse->subdev.device;
32 	return nvkm_rd32(device, 0x021100 + addr);
33 }
34 
35 static const struct nvkm_fuse_func
36 gm107_fuse = {
37 	.read = gm107_fuse_read,
38 };
39 
40 int
41 gm107_fuse_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
42 	       struct nvkm_fuse **pfuse)
43 {
44 	if (nvkm_gsp_rm(device->gsp))
45 		return -ENODEV;
46 
47 	return nvkm_fuse_new_(&gm107_fuse, device, type, inst, pfuse);
48 }
49