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/*
* Copyright (C) 2009 Francisco Jerez.
* All Rights Reserved.
*
* 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 (including the
* next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
*
*/
#include "priv.h"
static int
nv10_gpio_sense(struct nvkm_gpio *gpio, int line)
{
struct nvkm_device *device = gpio->subdev.device;
if (line < 2) {
line = line * 16;
line = nvkm_rd32(device, 0x600818) >> line;
return !!(line & 0x0100);
} else
if (line < 10) {
line = (line - 2) * 4;
line = nvkm_rd32(device, 0x60081c) >> line;
return !!(line & 0x04);
} else
if (line < 14) {
line = (line - 10) * 4;
line = nvkm_rd32(device, 0x600850) >> line;
return !!(line & 0x04);
}
return -EINVAL;
}
static int
nv10_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out)
{
struct nvkm_device *device = gpio->subdev.device;
u32 reg, mask, data;
if (line < 2) {
line = line * 16;
reg = 0x600818;
mask = 0x00000011;
data = (dir << 4) | out;
} else
if (line < 10) {
line = (line - 2) * 4;
reg = 0x60081c;
mask = 0x00000003;
data = (dir << 1) | out;
} else
if (line < 14) {
line = (line - 10) * 4;
reg = 0x600850;
mask = 0x00000003;
data = (dir << 1) | out;
} else {
return -EINVAL;
}
nvkm_mask(device, reg, mask << line, data << line);
return 0;
}
static void
nv10_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
{
struct nvkm_device *device = gpio->subdev.device;
u32 intr = nvkm_rd32(device, 0x001104);
u32 stat = nvkm_rd32(device, 0x001144) & intr;
*lo = (stat & 0xffff0000) >> 16;
*hi = (stat & 0x0000ffff);
nvkm_wr32(device, 0x001104, intr);
}
static void
nv10_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
{
struct nvkm_device *device = gpio->subdev.device;
u32 inte = nvkm_rd32(device, 0x001144);
if (type & NVKM_GPIO_LO)
inte = (inte & ~(mask << 16)) | (data << 16);
if (type & NVKM_GPIO_HI)
inte = (inte & ~mask) | data;
nvkm_wr32(device, 0x001144, inte);
}
struct nvkm_oclass *
nv10_gpio_oclass = &(struct nvkm_gpio_impl) {
.base.handle = NV_SUBDEV(GPIO, 0x10),
.base.ofuncs = &(struct nvkm_ofuncs) {
.ctor = _nvkm_gpio_ctor,
.dtor = _nvkm_gpio_dtor,
.init = _nvkm_gpio_init,
.fini = _nvkm_gpio_fini,
},
.lines = 16,
.intr_stat = nv10_gpio_intr_stat,
.intr_mask = nv10_gpio_intr_mask,
.drive = nv10_gpio_drive,
.sense = nv10_gpio_sense,
}.base;
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