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
27 void
28 g94_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
42 void
43 g94_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
59 static const struct nvkm_i2c_func
60 g94_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
68 int
69 g94_i2c_new(struct nvkm_device *device, int index, struct nvkm_i2c **pi2c)
70 {
71 return nvkm_i2c_new_(&g94_i2c, device, index, pi2c);
72 }