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
25 #include "pad.h"
26
27 struct nv94_i2c_pad {
28 struct nvkm_i2c_pad base;
29 int addr;
30 };
31
32 static int
nv94_i2c_pad_fini(struct nouveau_object * object,bool suspend)33 nv94_i2c_pad_fini(struct nouveau_object *object, bool suspend)
34 {
35 struct nouveau_i2c *i2c = (void *)object->engine;
36 struct nv94_i2c_pad *pad = (void *)object;
37 nv_mask(i2c, 0x00e50c + pad->addr, 0x00000001, 0x00000001);
38 return nvkm_i2c_pad_fini(&pad->base, suspend);
39 }
40
41 static int
nv94_i2c_pad_init(struct nouveau_object * object)42 nv94_i2c_pad_init(struct nouveau_object *object)
43 {
44 struct nouveau_i2c *i2c = (void *)object->engine;
45 struct nv94_i2c_pad *pad = (void *)object;
46
47 switch (nv_oclass(pad->base.next)->handle) {
48 case NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX):
49 nv_mask(i2c, 0x00e500 + pad->addr, 0x0000c003, 0x00000002);
50 break;
51 case NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT):
52 default:
53 nv_mask(i2c, 0x00e500 + pad->addr, 0x0000c003, 0x0000c001);
54 break;
55 }
56
57 nv_mask(i2c, 0x00e50c + pad->addr, 0x00000001, 0x00000000);
58 return nvkm_i2c_pad_init(&pad->base);
59 }
60
61 static int
nv94_i2c_pad_ctor(struct nouveau_object * parent,struct nouveau_object * engine,struct nouveau_oclass * oclass,void * data,u32 index,struct nouveau_object ** pobject)62 nv94_i2c_pad_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
63 struct nouveau_oclass *oclass, void *data, u32 index,
64 struct nouveau_object **pobject)
65 {
66 struct nv94_i2c_pad *pad;
67 int ret;
68
69 ret = nvkm_i2c_pad_create(parent, engine, oclass, index, &pad);
70 *pobject = nv_object(pad);
71 if (ret)
72 return ret;
73
74 pad->addr = index * 0x50;;
75 return 0;
76 }
77
78 struct nouveau_oclass
79 nv94_i2c_pad_oclass = {
80 .ofuncs = &(struct nouveau_ofuncs) {
81 .ctor = nv94_i2c_pad_ctor,
82 .dtor = _nvkm_i2c_pad_dtor,
83 .init = nv94_i2c_pad_init,
84 .fini = nv94_i2c_pad_fini,
85 },
86 };
87