1/* $NetBSD: nouveau_subdev_i2c_nvd0.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $ */
2
3/*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26
27#include <sys/cdefs.h>
28__KERNEL_RCSID(0, "$NetBSD: nouveau_subdev_i2c_nvd0.c,v 1.1.1.1 2014/08/06 12:36:30 riastradh Exp $");
29
30#include "nv50.h"
31
32static int
33nvd0_i2c_sense_scl(struct nouveau_i2c_port *base)
34{
35 struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine;
36 struct nv50_i2c_port *port = (void *)base;
37 return !!(nv_rd32(priv, port->addr) & 0x00000010);
38}
39
40static int
41nvd0_i2c_sense_sda(struct nouveau_i2c_port *base)
42{
43 struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine;
44 struct nv50_i2c_port *port = (void *)base;
45 return !!(nv_rd32(priv, port->addr) & 0x00000020);
46}
47
48static const struct nouveau_i2c_func
49nvd0_i2c_func = {
50 .acquire = nv94_i2c_acquire,
51 .release = nv94_i2c_release,
52 .drive_scl = nv50_i2c_drive_scl,
53 .drive_sda = nv50_i2c_drive_sda,
54 .sense_scl = nvd0_i2c_sense_scl,
55 .sense_sda = nvd0_i2c_sense_sda,
56};
57
58static int
59nvd0_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
60 struct nouveau_oclass *oclass, void *data, u32 index,
61 struct nouveau_object **pobject)
62{
63 struct dcb_i2c_entry *info = data;
64 struct nv50_i2c_port *port;
65 int ret;
66
67 ret = nouveau_i2c_port_create(parent, engine, oclass, index,
68 &nouveau_i2c_bit_algo, &nvd0_i2c_func,
69 &port);
70 *pobject = nv_object(port);
71 if (ret)
72 return ret;
73
74 port->state = 0x00000007;
75 port->addr = 0x00d014 + (info->drive * 0x20);
76 if (info->share != DCB_I2C_UNUSED) {
77 port->ctrl = 0x00e500 + (info->share * 0x50);
78 port->data = 0x0000e001;
79 }
80 return 0;
81}
82
83static struct nouveau_oclass
84nvd0_i2c_sclass[] = {
85 { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT),
86 .ofuncs = &(struct nouveau_ofuncs) {
87 .ctor = nvd0_i2c_port_ctor,
88 .dtor = _nouveau_i2c_port_dtor,
89 .init = nv50_i2c_port_init,
90 .fini = _nouveau_i2c_port_fini,
91 },
92 },
93 { .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX),
94 .ofuncs = &(struct nouveau_ofuncs) {
95 .ctor = nv94_aux_port_ctor,
96 .dtor = _nouveau_i2c_port_dtor,
97 .init = _nouveau_i2c_port_init,
98 .fini = _nouveau_i2c_port_fini,
99 },
100 },
101 {}
102};
103
104static int
105nvd0_i2c_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
106 struct nouveau_oclass *oclass, void *data, u32 size,
107 struct nouveau_object **pobject)
108{
109 struct nv50_i2c_priv *priv;
110 int ret;
111
112 ret = nouveau_i2c_create(parent, engine, oclass, nvd0_i2c_sclass, &priv);
113 *pobject = nv_object(priv);
114 if (ret)
115 return ret;
116
117 return 0;
118}
119
120struct nouveau_oclass
121nvd0_i2c_oclass = {
122 .handle = NV_SUBDEV(I2C, 0xd0),
123 .ofuncs = &(struct nouveau_ofuncs) {
124 .ctor = nvd0_i2c_ctor,
125 .dtor = _nouveau_i2c_dtor,
126 .init = _nouveau_i2c_init,
127 .fini = _nouveau_i2c_fini,
128 },
129};
130