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
26int
27_nvkm_i2c_pad_fini(struct nvkm_object *object, bool suspend)
28{
29	struct nvkm_i2c_pad *pad = (void *)object;
30	DBG("-> NULL\n");
31	pad->port = NULL;
32	return nvkm_object_fini(&pad->base, suspend);
33}
34
35int
36_nvkm_i2c_pad_init(struct nvkm_object *object)
37{
38	struct nvkm_i2c_pad *pad = (void *)object;
39	DBG("-> PORT:%02x\n", pad->next->index);
40	pad->port = pad->next;
41	return nvkm_object_init(&pad->base);
42}
43
44int
45nvkm_i2c_pad_create_(struct nvkm_object *parent,
46		     struct nvkm_object *engine,
47		     struct nvkm_oclass *oclass, int index,
48		     int size, void **pobject)
49{
50	struct nvkm_i2c *i2c = nvkm_i2c(parent);
51	struct nvkm_i2c_port *port;
52	struct nvkm_i2c_pad *pad;
53	int ret;
54
55	list_for_each_entry(port, &i2c->ports, head) {
56		pad = nvkm_i2c_pad(port);
57		if (pad->index == index) {
58			atomic_inc(&nv_object(pad)->refcount);
59			*pobject = pad;
60			return 1;
61		}
62	}
63
64	ret = nvkm_object_create_(parent, engine, oclass, 0, size, pobject);
65	pad = *pobject;
66	if (ret)
67		return ret;
68
69	pad->index = index;
70	return 0;
71}
72
73int
74_nvkm_i2c_pad_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
75		   struct nvkm_oclass *oclass, void *data, u32 index,
76		   struct nvkm_object **pobject)
77{
78	struct nvkm_i2c_pad *pad;
79	int ret;
80	ret = nvkm_i2c_pad_create(parent, engine, oclass, index, &pad);
81	*pobject = nv_object(pad);
82	return ret;
83}
84