1/*	$NetBSD: nouveau_nvkm_subdev_gpio_gk104.c,v 1.4 2021/12/18 23:45:39 riastradh Exp $	*/
2
3/*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26#include <sys/cdefs.h>
27__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_gpio_gk104.c,v 1.4 2021/12/18 23:45:39 riastradh Exp $");
28
29#include "priv.h"
30
31static void
32gk104_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
33{
34	struct nvkm_device *device = gpio->subdev.device;
35	u32 intr0 = nvkm_rd32(device, 0x00dc00);
36	u32 intr1 = nvkm_rd32(device, 0x00dc80);
37	u32 stat0 = nvkm_rd32(device, 0x00dc08) & intr0;
38	u32 stat1 = nvkm_rd32(device, 0x00dc88) & intr1;
39	*lo = (stat1 & 0xffff0000) | (stat0 >> 16);
40	*hi = (stat1 << 16) | (stat0 & 0x0000ffff);
41	nvkm_wr32(device, 0x00dc00, intr0);
42	nvkm_wr32(device, 0x00dc80, intr1);
43}
44
45static void
46gk104_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
47{
48	struct nvkm_device *device = gpio->subdev.device;
49	u32 inte0 = nvkm_rd32(device, 0x00dc08);
50	u32 inte1 = nvkm_rd32(device, 0x00dc88);
51	if (type & NVKM_GPIO_LO)
52		inte0 = (inte0 & ~(mask << 16)) | (data << 16);
53	if (type & NVKM_GPIO_HI)
54		inte0 = (inte0 & ~(mask & 0xffff)) | (data & 0xffff);
55	mask >>= 16;
56	data >>= 16;
57	if (type & NVKM_GPIO_LO)
58		inte1 = (inte1 & ~(mask << 16)) | (data << 16);
59	if (type & NVKM_GPIO_HI)
60		inte1 = (inte1 & ~mask) | data;
61	nvkm_wr32(device, 0x00dc08, inte0);
62	nvkm_wr32(device, 0x00dc88, inte1);
63}
64
65static const struct nvkm_gpio_func
66gk104_gpio = {
67	.lines = 32,
68	.intr_stat = gk104_gpio_intr_stat,
69	.intr_mask = gk104_gpio_intr_mask,
70	.drive = gf119_gpio_drive,
71	.sense = gf119_gpio_sense,
72	.reset = gf119_gpio_reset,
73};
74
75int
76gk104_gpio_new(struct nvkm_device *device, int index, struct nvkm_gpio **pgpio)
77{
78	return nvkm_gpio_new_(&gk104_gpio, device, index, pgpio);
79}
80