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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 <drm/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;
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);
}
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