1 /*
2  * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20  * DEALINGS IN THE SOFTWARE.
21  */
22 #include <subdev/ibus.h>
23 
24 #include "priv.h"
25 
26 static int
gp10b_ibus_init(struct nvkm_subdev * ibus)27 gp10b_ibus_init(struct nvkm_subdev *ibus)
28 {
29 	struct nvkm_device *device = ibus->device;
30 
31 	nvkm_wr32(device, 0x1200a8, 0x0);
32 
33 	/* init ring */
34 	nvkm_wr32(device, 0x12004c, 0x4);
35 	nvkm_wr32(device, 0x122204, 0x2);
36 	nvkm_rd32(device, 0x122204);
37 
38 	/* timeout configuration */
39 	nvkm_wr32(device, 0x009080, 0x800186a0);
40 
41 	return 0;
42 }
43 
44 static const struct nvkm_subdev_func
45 gp10b_ibus = {
46 	.init = gp10b_ibus_init,
47 	.intr = gk104_ibus_intr,
48 };
49 
50 int
gp10b_ibus_new(struct nvkm_device * device,int index,struct nvkm_subdev ** pibus)51 gp10b_ibus_new(struct nvkm_device *device, int index,
52 	       struct nvkm_subdev **pibus)
53 {
54 	return nvkm_subdev_new_(&gp10b_ibus, device, index, pibus);
55 }
56