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 gf119_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 u32 data
= nvbios_rd32(bios
, entry
);
37 u8 line
= (data
& 0x0000003f);
38 u8 defs
= !!(data
& 0x00000080);
39 u8 func
= (data
& 0x0000ff00) >> 8;
40 u8 unk0
= (data
& 0x00ff0000) >> 16;
41 u8 unk1
= (data
& 0x1f000000) >> 24;
43 if ( func
== DCB_GPIO_UNUSED
||
44 (match
!= DCB_GPIO_UNUSED
&& match
!= func
))
47 nvkm_gpio_set(gpio
, 0, func
, line
, defs
);
49 nvkm_mask(device
, 0x00d610 + (line
* 4), 0xff, unk0
);
51 nvkm_mask(device
, 0x00d740 + (unk1
* 4), 0xff, line
);
56 gf119_gpio_drive(struct nvkm_gpio
*gpio
, int line
, int dir
, int out
)
58 struct nvkm_device
*device
= gpio
->subdev
.device
;
59 u32 data
= ((dir
^ 1) << 13) | (out
<< 12);
60 nvkm_mask(device
, 0x00d610 + (line
* 4), 0x00003000, data
);
61 nvkm_mask(device
, 0x00d604, 0x00000001, 0x00000001); /* update? */
66 gf119_gpio_sense(struct nvkm_gpio
*gpio
, int line
)
68 struct nvkm_device
*device
= gpio
->subdev
.device
;
69 return !!(nvkm_rd32(device
, 0x00d610 + (line
* 4)) & 0x00004000);
72 static const struct nvkm_gpio_func
75 .intr_stat
= g94_gpio_intr_stat
,
76 .intr_mask
= g94_gpio_intr_mask
,
77 .drive
= gf119_gpio_drive
,
78 .sense
= gf119_gpio_sense
,
79 .reset
= gf119_gpio_reset
,
83 gf119_gpio_new(struct nvkm_device
*device
, int index
, struct nvkm_gpio
**pgpio
)
85 return nvkm_gpio_new_(&gf119_gpio
, device
, index
, pgpio
);