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 void
g94_gpio_intr_stat(struct nvkm_gpio * gpio,u32 * hi,u32 * lo)27 g94_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
28 {
29 	struct nvkm_device *device = gpio->subdev.device;
30 	u32 intr0 = nvkm_rd32(device, 0x00e054);
31 	u32 intr1 = nvkm_rd32(device, 0x00e074);
32 	u32 stat0 = nvkm_rd32(device, 0x00e050) & intr0;
33 	u32 stat1 = nvkm_rd32(device, 0x00e070) & intr1;
34 	*lo = (stat1 & 0xffff0000) | (stat0 >> 16);
35 	*hi = (stat1 << 16) | (stat0 & 0x0000ffff);
36 	nvkm_wr32(device, 0x00e054, intr0);
37 	nvkm_wr32(device, 0x00e074, intr1);
38 }
39 
40 void
g94_gpio_intr_mask(struct nvkm_gpio * gpio,u32 type,u32 mask,u32 data)41 g94_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
42 {
43 	struct nvkm_device *device = gpio->subdev.device;
44 	u32 inte0 = nvkm_rd32(device, 0x00e050);
45 	u32 inte1 = nvkm_rd32(device, 0x00e070);
46 	if (type & NVKM_GPIO_LO)
47 		inte0 = (inte0 & ~(mask << 16)) | (data << 16);
48 	if (type & NVKM_GPIO_HI)
49 		inte0 = (inte0 & ~(mask & 0xffff)) | (data & 0xffff);
50 	mask >>= 16;
51 	data >>= 16;
52 	if (type & NVKM_GPIO_LO)
53 		inte1 = (inte1 & ~(mask << 16)) | (data << 16);
54 	if (type & NVKM_GPIO_HI)
55 		inte1 = (inte1 & ~mask) | data;
56 	nvkm_wr32(device, 0x00e050, inte0);
57 	nvkm_wr32(device, 0x00e070, inte1);
58 }
59 
60 static const struct nvkm_gpio_func
61 g94_gpio = {
62 	.lines = 32,
63 	.intr_stat = g94_gpio_intr_stat,
64 	.intr_mask = g94_gpio_intr_mask,
65 	.drive = nv50_gpio_drive,
66 	.sense = nv50_gpio_sense,
67 	.reset = nv50_gpio_reset,
68 };
69 
70 int
g94_gpio_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_gpio ** pgpio)71 g94_gpio_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
72 	     struct nvkm_gpio **pgpio)
73 {
74 	return nvkm_gpio_new_(&g94_gpio, device, type, inst, pgpio);
75 }
76