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
28 static void
gk104_gpio_intr_stat(struct nvkm_gpio * gpio,u32 * hi,u32 * lo)29 gk104_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
42 static void
gk104_gpio_intr_mask(struct nvkm_gpio * gpio,u32 type,u32 mask,u32 data)43 gk104_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
62 static const struct nvkm_gpio_func
63 gk104_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
72 int
gk104_gpio_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_gpio ** pgpio)73 gk104_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