mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-21 18:14:48 +08:00
124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/*
|
|
* 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 "drmP.h"
|
|
#include "nouveau_drv.h"
|
|
#include "nouveau_hw.h"
|
|
#include "nouveau_gpio.h"
|
|
|
|
int
|
|
nv10_gpio_sense(struct drm_device *dev, int line)
|
|
{
|
|
if (line < 2) {
|
|
line = line * 16;
|
|
line = NVReadCRTC(dev, 0, NV_PCRTC_GPIO) >> line;
|
|
return !!(line & 0x0100);
|
|
} else
|
|
if (line < 10) {
|
|
line = (line - 2) * 4;
|
|
line = NVReadCRTC(dev, 0, NV_PCRTC_GPIO_EXT) >> line;
|
|
return !!(line & 0x04);
|
|
} else
|
|
if (line < 14) {
|
|
line = (line - 10) * 4;
|
|
line = NVReadCRTC(dev, 0, NV_PCRTC_850) >> line;
|
|
return !!(line & 0x04);
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
int
|
|
nv10_gpio_drive(struct drm_device *dev, int line, int dir, int out)
|
|
{
|
|
u32 reg, mask, data;
|
|
|
|
if (line < 2) {
|
|
line = line * 16;
|
|
reg = NV_PCRTC_GPIO;
|
|
mask = 0x00000011;
|
|
data = (dir << 4) | out;
|
|
} else
|
|
if (line < 10) {
|
|
line = (line - 2) * 4;
|
|
reg = NV_PCRTC_GPIO_EXT;
|
|
mask = 0x00000003 << ((line - 2) * 4);
|
|
data = (dir << 1) | out;
|
|
} else
|
|
if (line < 14) {
|
|
line = (line - 10) * 4;
|
|
reg = NV_PCRTC_850;
|
|
mask = 0x00000003;
|
|
data = (dir << 1) | out;
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
mask = NVReadCRTC(dev, 0, reg) & ~(mask << line);
|
|
NVWriteCRTC(dev, 0, reg, mask | (data << line));
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
nv10_gpio_irq_enable(struct drm_device *dev, int line, bool on)
|
|
{
|
|
u32 mask = 0x00010001 << line;
|
|
|
|
nv_wr32(dev, 0x001104, mask);
|
|
nv_mask(dev, 0x001144, mask, on ? mask : 0);
|
|
}
|
|
|
|
static void
|
|
nv10_gpio_isr(struct drm_device *dev)
|
|
{
|
|
u32 intr = nv_rd32(dev, 0x1104);
|
|
u32 hi = (intr & 0x0000ffff) >> 0;
|
|
u32 lo = (intr & 0xffff0000) >> 16;
|
|
|
|
nouveau_gpio_isr(dev, 0, hi | lo);
|
|
|
|
nv_wr32(dev, 0x001104, intr);
|
|
}
|
|
|
|
int
|
|
nv10_gpio_init(struct drm_device *dev)
|
|
{
|
|
nv_wr32(dev, 0x001140, 0x00000000);
|
|
nv_wr32(dev, 0x001100, 0xffffffff);
|
|
nv_wr32(dev, 0x001144, 0x00000000);
|
|
nv_wr32(dev, 0x001104, 0xffffffff);
|
|
nouveau_irq_register(dev, 28, nv10_gpio_isr); /* PBUS */
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
nv10_gpio_fini(struct drm_device *dev)
|
|
{
|
|
nv_wr32(dev, 0x001140, 0x00000000);
|
|
nv_wr32(dev, 0x001144, 0x00000000);
|
|
nouveau_irq_unregister(dev, 28);
|
|
}
|