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/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include "priv.h"
void
nvd0_gpio_reset(struct nouveau_gpio *gpio, u8 match)
{
struct nouveau_bios *bios = nouveau_bios(gpio);
u8 ver, len;
u16 entry;
int ent = -1;
while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) {
u32 data = nv_ro32(bios, entry);
u8 line = (data & 0x0000003f);
u8 defs = !!(data & 0x00000080);
u8 func = (data & 0x0000ff00) >> 8;
u8 unk0 = (data & 0x00ff0000) >> 16;
u8 unk1 = (data & 0x1f000000) >> 24;
if ( func == DCB_GPIO_UNUSED ||
(match != DCB_GPIO_UNUSED && match != func))
continue;
gpio->set(gpio, 0, func, line, defs);
nv_mask(gpio, 0x00d610 + (line * 4), 0xff, unk0);
if (unk1--)
nv_mask(gpio, 0x00d740 + (unk1 * 4), 0xff, line);
}
}
int
nvd0_gpio_drive(struct nouveau_gpio *gpio, int line, int dir, int out)
{
u32 data = ((dir ^ 1) << 13) | (out << 12);
nv_mask(gpio, 0x00d610 + (line * 4), 0x00003000, data);
nv_mask(gpio, 0x00d604, 0x00000001, 0x00000001); /* update? */
return 0;
}
int
nvd0_gpio_sense(struct nouveau_gpio *gpio, int line)
{
return !!(nv_rd32(gpio, 0x00d610 + (line * 4)) & 0x00004000);
}
struct nouveau_oclass *
nvd0_gpio_oclass = &(struct nouveau_gpio_impl) {
.base.handle = NV_SUBDEV(GPIO, 0xd0),
.base.ofuncs = &(struct nouveau_ofuncs) {
.ctor = _nouveau_gpio_ctor,
.dtor = _nouveau_gpio_dtor,
.init = _nouveau_gpio_init,
.fini = _nouveau_gpio_fini,
},
.lines = 32,
.intr_stat = nv92_gpio_intr_stat,
.intr_mask = nv92_gpio_intr_mask,
.drive = nvd0_gpio_drive,
.sense = nvd0_gpio_sense,
.reset = nvd0_gpio_reset,
}.base;
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