forked from Minki/linux
93 lines
2.5 KiB
C
93 lines
2.5 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"
|
|
|
|
static bool
|
|
get_gpio_location(struct dcb_gpio_entry *ent, uint32_t *reg, uint32_t *shift,
|
|
uint32_t *mask)
|
|
{
|
|
if (ent->line < 2) {
|
|
*reg = NV_PCRTC_GPIO;
|
|
*shift = ent->line * 16;
|
|
*mask = 0x11;
|
|
|
|
} else if (ent->line < 10) {
|
|
*reg = NV_PCRTC_GPIO_EXT;
|
|
*shift = (ent->line - 2) * 4;
|
|
*mask = 0x3;
|
|
|
|
} else if (ent->line < 14) {
|
|
*reg = NV_PCRTC_850;
|
|
*shift = (ent->line - 10) * 4;
|
|
*mask = 0x3;
|
|
|
|
} else {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int
|
|
nv10_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag)
|
|
{
|
|
struct dcb_gpio_entry *ent = nouveau_bios_gpio_entry(dev, tag);
|
|
uint32_t reg, shift, mask, value;
|
|
|
|
if (!ent)
|
|
return -ENODEV;
|
|
|
|
if (!get_gpio_location(ent, ®, &shift, &mask))
|
|
return -ENODEV;
|
|
|
|
value = NVReadCRTC(dev, 0, reg) >> shift;
|
|
|
|
return (ent->invert ? 1 : 0) ^ (value & 1);
|
|
}
|
|
|
|
int
|
|
nv10_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state)
|
|
{
|
|
struct dcb_gpio_entry *ent = nouveau_bios_gpio_entry(dev, tag);
|
|
uint32_t reg, shift, mask, value;
|
|
|
|
if (!ent)
|
|
return -ENODEV;
|
|
|
|
if (!get_gpio_location(ent, ®, &shift, &mask))
|
|
return -ENODEV;
|
|
|
|
value = ((ent->invert ? 1 : 0) ^ (state ? 1 : 0)) << shift;
|
|
mask = ~(mask << shift);
|
|
|
|
NVWriteCRTC(dev, 0, reg, value | (NVReadCRTC(dev, 0, reg) & mask));
|
|
|
|
return 0;
|
|
}
|