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 void
g94_i2c_pad_mode(struct nvkm_i2c_pad * pad,enum nvkm_i2c_pad_mode mode)29 g94_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, 0x00e50c + base, 0x00000001, 0x00000001);
38 break;
39 case NVKM_I2C_PAD_I2C:
40 nvkm_mask(device, 0x00e500 + base, 0x0000c003, 0x0000c001);
41 nvkm_mask(device, 0x00e50c + base, 0x00000001, 0x00000000);
42 break;
43 case NVKM_I2C_PAD_AUX:
44 nvkm_mask(device, 0x00e500 + base, 0x0000c003, 0x00000002);
45 nvkm_mask(device, 0x00e50c + 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 g94_i2c_pad_s_func = {
55 .bus_new_4 = nv50_i2c_bus_new,
56 .aux_new_6 = g94_i2c_aux_new,
57 .mode = g94_i2c_pad_mode,
58 };
59
60 int
g94_i2c_pad_s_new(struct nvkm_i2c * i2c,int id,struct nvkm_i2c_pad ** ppad)61 g94_i2c_pad_s_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
62 {
63 return nvkm_i2c_pad_new_(&g94_i2c_pad_s_func, i2c, id, ppad);
64 }
65
66 static const struct nvkm_i2c_pad_func
67 g94_i2c_pad_x_func = {
68 .bus_new_4 = nv50_i2c_bus_new,
69 .aux_new_6 = g94_i2c_aux_new,
70 };
71
72 int
g94_i2c_pad_x_new(struct nvkm_i2c * i2c,int id,struct nvkm_i2c_pad ** ppad)73 g94_i2c_pad_x_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
74 {
75 return nvkm_i2c_pad_new_(&g94_i2c_pad_x_func, i2c, id, ppad);
76 }
77