2 * Copyright 2012 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
27 nv50_gpio_reset(struct nvkm_gpio
*gpio
, u8 match
)
29 struct nvkm_device
*device
= gpio
->subdev
.device
;
30 struct nvkm_bios
*bios
= device
->bios
;
35 while ((entry
= dcb_gpio_entry(bios
, 0, ++ent
, &ver
, &len
))) {
36 static const u32 regs
[] = { 0xe100, 0xe28c };
37 u32 data
= nvbios_rd32(bios
, entry
);
38 u8 line
= (data
& 0x0000001f);
39 u8 func
= (data
& 0x0000ff00) >> 8;
40 u8 defs
= !!(data
& 0x01000000);
41 u8 unk0
= !!(data
& 0x02000000);
42 u8 unk1
= !!(data
& 0x04000000);
43 u32 val
= (unk1
<< 16) | unk0
;
44 u32 reg
= regs
[line
>> 4];
45 u32 lsh
= line
& 0x0f;
47 if ( func
== DCB_GPIO_UNUSED
||
48 (match
!= DCB_GPIO_UNUSED
&& match
!= func
))
51 nvkm_gpio_set(gpio
, 0, func
, line
, defs
);
53 nvkm_mask(device
, reg
, 0x00010001 << lsh
, val
<< lsh
);
58 nv50_gpio_location(int line
, u32
*reg
, u32
*shift
)
60 const u32 nv50_gpio_reg
[4] = { 0xe104, 0xe108, 0xe280, 0xe284 };
65 *reg
= nv50_gpio_reg
[line
>> 3];
66 *shift
= (line
& 7) << 2;
71 nv50_gpio_drive(struct nvkm_gpio
*gpio
, int line
, int dir
, int out
)
73 struct nvkm_device
*device
= gpio
->subdev
.device
;
76 if (nv50_gpio_location(line
, ®
, &shift
))
79 nvkm_mask(device
, reg
, 3 << shift
, (((dir
^ 1) << 1) | out
) << shift
);
84 nv50_gpio_sense(struct nvkm_gpio
*gpio
, int line
)
86 struct nvkm_device
*device
= gpio
->subdev
.device
;
89 if (nv50_gpio_location(line
, ®
, &shift
))
92 return !!(nvkm_rd32(device
, reg
) & (4 << shift
));
96 nv50_gpio_intr_stat(struct nvkm_gpio
*gpio
, u32
*hi
, u32
*lo
)
98 struct nvkm_device
*device
= gpio
->subdev
.device
;
99 u32 intr
= nvkm_rd32(device
, 0x00e054);
100 u32 stat
= nvkm_rd32(device
, 0x00e050) & intr
;
101 *lo
= (stat
& 0xffff0000) >> 16;
102 *hi
= (stat
& 0x0000ffff);
103 nvkm_wr32(device
, 0x00e054, intr
);
107 nv50_gpio_intr_mask(struct nvkm_gpio
*gpio
, u32 type
, u32 mask
, u32 data
)
109 struct nvkm_device
*device
= gpio
->subdev
.device
;
110 u32 inte
= nvkm_rd32(device
, 0x00e050);
111 if (type
& NVKM_GPIO_LO
)
112 inte
= (inte
& ~(mask
<< 16)) | (data
<< 16);
113 if (type
& NVKM_GPIO_HI
)
114 inte
= (inte
& ~mask
) | data
;
115 nvkm_wr32(device
, 0x00e050, inte
);
118 static const struct nvkm_gpio_func
121 .intr_stat
= nv50_gpio_intr_stat
,
122 .intr_mask
= nv50_gpio_intr_mask
,
123 .drive
= nv50_gpio_drive
,
124 .sense
= nv50_gpio_sense
,
125 .reset
= nv50_gpio_reset
,
129 nv50_gpio_new(struct nvkm_device
*device
, int index
, struct nvkm_gpio
**pgpio
)
131 return nvkm_gpio_new_(&nv50_gpio
, device
, index
, pgpio
);