1 /*
2  * Copyright 2014 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  * Authors: Ben Skeggs
23  */
24 #include "pad.h"
25 #include "aux.h"
26 #include "bus.h"
27 
28 static void
29 gm200_i2c_pad_mode(struct nvkm_i2c_pad *pad, enum nvkm_i2c_pad_mode mode)
30 {
31 	struct nvkm_subdev *subdev = &pad->i2c->subdev;
32 	struct nvkm_device *device = subdev->device;
33 	const u32 base = (pad->id - NVKM_I2C_PAD_HYBRID(0)) * 0x50;
34 
35 	switch (mode) {
36 	case NVKM_I2C_PAD_OFF:
37 		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000001);
38 		break;
39 	case NVKM_I2C_PAD_I2C:
40 		nvkm_mask(device, 0x00d970 + base, 0x0000c003, 0x0000c001);
41 		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000000);
42 		break;
43 	case NVKM_I2C_PAD_AUX:
44 		nvkm_mask(device, 0x00d970 + base, 0x0000c003, 0x00000002);
45 		nvkm_mask(device, 0x00d97c + base, 0x00000001, 0x00000000);
46 		break;
47 	default:
48 		WARN_ON(1);
49 		break;
50 	}
51 }
52 
53 static const struct nvkm_i2c_pad_func
54 gm200_i2c_pad_s_func = {
55 	.bus_new_4 = gf119_i2c_bus_new,
56 	.aux_new_6 = gm200_i2c_aux_new,
57 	.mode = gm200_i2c_pad_mode,
58 };
59 
60 int
61 gm200_i2c_pad_s_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
62 {
63 	return nvkm_i2c_pad_new_(&gm200_i2c_pad_s_func, i2c, id, ppad);
64 }
65 
66 static const struct nvkm_i2c_pad_func
67 gm200_i2c_pad_x_func = {
68 	.bus_new_4 = gf119_i2c_bus_new,
69 	.aux_new_6 = gm200_i2c_aux_new,
70 };
71 
72 int
73 gm200_i2c_pad_x_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
74 {
75 	return nvkm_i2c_pad_new_(&gm200_i2c_pad_x_func, i2c, id, ppad);
76 }
77