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
26#include <subdev/gsp.h>
27
28static void
29gk104_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
30{
31	struct nvkm_device *device = gpio->subdev.device;
32	u32 intr0 = nvkm_rd32(device, 0x00dc00);
33	u32 intr1 = nvkm_rd32(device, 0x00dc80);
34	u32 stat0 = nvkm_rd32(device, 0x00dc08) & intr0;
35	u32 stat1 = nvkm_rd32(device, 0x00dc88) & intr1;
36	*lo = (stat1 & 0xffff0000) | (stat0 >> 16);
37	*hi = (stat1 << 16) | (stat0 & 0x0000ffff);
38	nvkm_wr32(device, 0x00dc00, intr0);
39	nvkm_wr32(device, 0x00dc80, intr1);
40}
41
42static void
43gk104_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
44{
45	struct nvkm_device *device = gpio->subdev.device;
46	u32 inte0 = nvkm_rd32(device, 0x00dc08);
47	u32 inte1 = nvkm_rd32(device, 0x00dc88);
48	if (type & NVKM_GPIO_LO)
49		inte0 = (inte0 & ~(mask << 16)) | (data << 16);
50	if (type & NVKM_GPIO_HI)
51		inte0 = (inte0 & ~(mask & 0xffff)) | (data & 0xffff);
52	mask >>= 16;
53	data >>= 16;
54	if (type & NVKM_GPIO_LO)
55		inte1 = (inte1 & ~(mask << 16)) | (data << 16);
56	if (type & NVKM_GPIO_HI)
57		inte1 = (inte1 & ~mask) | data;
58	nvkm_wr32(device, 0x00dc08, inte0);
59	nvkm_wr32(device, 0x00dc88, inte1);
60}
61
62static const struct nvkm_gpio_func
63gk104_gpio = {
64	.lines = 32,
65	.intr_stat = gk104_gpio_intr_stat,
66	.intr_mask = gk104_gpio_intr_mask,
67	.drive = gf119_gpio_drive,
68	.sense = gf119_gpio_sense,
69	.reset = gf119_gpio_reset,
70};
71
72int
73gk104_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
74	       struct nvkm_gpio **pgpio)
75{
76	if (nvkm_gsp_rm(device->gsp))
77		return -ENODEV;
78
79	return nvkm_gpio_new_(&gk104_gpio, device, type, inst, pgpio);
80}
81