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
25#include "nv50.h"
26
27static void
28nve0_aux_stat(struct nouveau_i2c *i2c, u32 *hi, u32 *lo, u32 *rq, u32 *tx)
29{
30	u32 intr = nv_rd32(i2c, 0x00dc60);
31	u32 stat = nv_rd32(i2c, 0x00dc68) & intr, i;
32	for (i = 0, *hi = *lo = *rq = *tx = 0; i < 8; i++) {
33		if ((stat & (1 << (i * 4)))) *hi |= 1 << i;
34		if ((stat & (2 << (i * 4)))) *lo |= 1 << i;
35		if ((stat & (4 << (i * 4)))) *rq |= 1 << i;
36		if ((stat & (8 << (i * 4)))) *tx |= 1 << i;
37	}
38	nv_wr32(i2c, 0x00dc60, intr);
39}
40
41static void
42nve0_aux_mask(struct nouveau_i2c *i2c, u32 type, u32 mask, u32 data)
43{
44	u32 temp = nv_rd32(i2c, 0x00dc68), i;
45	for (i = 0; i < 8; i++) {
46		if (mask & (1 << i)) {
47			if (!(data & (1 << i))) {
48				temp &= ~(type << (i * 4));
49				continue;
50			}
51			temp |= type << (i * 4);
52		}
53	}
54	nv_wr32(i2c, 0x00dc68, temp);
55}
56
57struct nouveau_oclass *
58nve0_i2c_oclass = &(struct nouveau_i2c_impl) {
59	.base.handle = NV_SUBDEV(I2C, 0xe0),
60	.base.ofuncs = &(struct nouveau_ofuncs) {
61		.ctor = _nouveau_i2c_ctor,
62		.dtor = _nouveau_i2c_dtor,
63		.init = _nouveau_i2c_init,
64		.fini = _nouveau_i2c_fini,
65	},
66	.sclass = nvd0_i2c_sclass,
67	.pad_x = &nv04_i2c_pad_oclass,
68	.pad_s = &nv94_i2c_pad_oclass,
69	.aux = 4,
70	.aux_stat = nve0_aux_stat,
71	.aux_mask = nve0_aux_mask,
72}.base;
73