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 "priv.h"
25#include "pad.h"
26
27void
28g94_aux_stat(struct nvkm_i2c *i2c, u32 *hi, u32 *lo, u32 *rq, u32 *tx)
29{
30	struct nvkm_device *device = i2c->subdev.device;
31	u32 intr = nvkm_rd32(device, 0x00e06c);
32	u32 stat = nvkm_rd32(device, 0x00e068) & intr, i;
33	for (i = 0, *hi = *lo = *rq = *tx = 0; i < 8; i++) {
34		if ((stat & (1 << (i * 4)))) *hi |= 1 << i;
35		if ((stat & (2 << (i * 4)))) *lo |= 1 << i;
36		if ((stat & (4 << (i * 4)))) *rq |= 1 << i;
37		if ((stat & (8 << (i * 4)))) *tx |= 1 << i;
38	}
39	nvkm_wr32(device, 0x00e06c, intr);
40}
41
42void
43g94_aux_mask(struct nvkm_i2c *i2c, u32 type, u32 mask, u32 data)
44{
45	struct nvkm_device *device = i2c->subdev.device;
46	u32 temp = nvkm_rd32(device, 0x00e068), i;
47	for (i = 0; i < 8; i++) {
48		if (mask & (1 << i)) {
49			if (!(data & (1 << i))) {
50				temp &= ~(type << (i * 4));
51				continue;
52			}
53			temp |= type << (i * 4);
54		}
55	}
56	nvkm_wr32(device, 0x00e068, temp);
57}
58
59static const struct nvkm_i2c_func
60g94_i2c = {
61	.pad_x_new = g94_i2c_pad_x_new,
62	.pad_s_new = g94_i2c_pad_s_new,
63	.aux = 4,
64	.aux_stat = g94_aux_stat,
65	.aux_mask = g94_aux_mask,
66};
67
68int
69g94_i2c_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
70	    struct nvkm_i2c **pi2c)
71{
72	return nvkm_i2c_new_(&g94_i2c, device, type, inst, pi2c);
73}
74