1/*
2 * Copyright 2012 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 "nv50.h"
25
26static int
27gf110_i2c_sense_scl(struct nvkm_i2c_port *base)
28{
29	struct nv50_i2c_priv *priv = (void *)nvkm_i2c(base);
30	struct nv50_i2c_port *port = (void *)base;
31	return !!(nv_rd32(priv, port->addr) & 0x00000010);
32}
33
34static int
35gf110_i2c_sense_sda(struct nvkm_i2c_port *base)
36{
37	struct nv50_i2c_priv *priv = (void *)nvkm_i2c(base);
38	struct nv50_i2c_port *port = (void *)base;
39	return !!(nv_rd32(priv, port->addr) & 0x00000020);
40}
41
42static const struct nvkm_i2c_func
43gf110_i2c_func = {
44	.drive_scl = nv50_i2c_drive_scl,
45	.drive_sda = nv50_i2c_drive_sda,
46	.sense_scl = gf110_i2c_sense_scl,
47	.sense_sda = gf110_i2c_sense_sda,
48};
49
50int
51gf110_i2c_port_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
52		    struct nvkm_oclass *oclass, void *data, u32 index,
53		    struct nvkm_object **pobject)
54{
55	struct dcb_i2c_entry *info = data;
56	struct nv50_i2c_port *port;
57	int ret;
58
59	ret = nvkm_i2c_port_create(parent, engine, oclass, index,
60				   &nvkm_i2c_bit_algo, &gf110_i2c_func, &port);
61	*pobject = nv_object(port);
62	if (ret)
63		return ret;
64
65	port->state = 0x00000007;
66	port->addr = 0x00d014 + (info->drive * 0x20);
67	return 0;
68}
69
70struct nvkm_oclass
71gf110_i2c_sclass[] = {
72	{ .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT),
73	  .ofuncs = &(struct nvkm_ofuncs) {
74		  .ctor = gf110_i2c_port_ctor,
75		  .dtor = _nvkm_i2c_port_dtor,
76		  .init = nv50_i2c_port_init,
77		  .fini = _nvkm_i2c_port_fini,
78	  },
79	},
80	{ .handle = NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX),
81	  .ofuncs = &(struct nvkm_ofuncs) {
82		  .ctor = g94_aux_port_ctor,
83		  .dtor = _nvkm_i2c_port_dtor,
84		  .init = _nvkm_i2c_port_init,
85		  .fini = _nvkm_i2c_port_fini,
86	  },
87	},
88	{}
89};
90
91struct nvkm_oclass *
92gf110_i2c_oclass = &(struct nvkm_i2c_impl) {
93	.base.handle = NV_SUBDEV(I2C, 0xd0),
94	.base.ofuncs = &(struct nvkm_ofuncs) {
95		.ctor = _nvkm_i2c_ctor,
96		.dtor = _nvkm_i2c_dtor,
97		.init = _nvkm_i2c_init,
98		.fini = _nvkm_i2c_fini,
99	},
100	.sclass = gf110_i2c_sclass,
101	.pad_x = &nv04_i2c_pad_oclass,
102	.pad_s = &g94_i2c_pad_oclass,
103	.aux = 4,
104	.aux_stat = g94_aux_stat,
105	.aux_mask = g94_aux_mask,
106}.base;
107