2 * Copyright (C) 2009 Francisco Jerez.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #include "nouveau_drv.h"
29 #include "nouveau_hw.h"
32 get_gpio_location(struct dcb_gpio_entry *ent, uint32_t *reg, uint32_t *shift,
37 *shift = ent->line * 16;
40 } else if (ent->line < 10) {
41 *reg = NV_PCRTC_GPIO_EXT;
42 *shift = (ent->line - 2) * 4;
45 } else if (ent->line < 14) {
47 *shift = (ent->line - 10) * 4;
58 nv10_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag)
60 struct dcb_gpio_entry *ent = nouveau_bios_gpio_entry(dev, tag);
61 uint32_t reg, shift, mask, value;
66 if (!get_gpio_location(ent, ®, &shift, &mask))
69 value = NVReadCRTC(dev, 0, reg) >> shift;
71 return (ent->invert ? 1 : 0) ^ (value & 1);
75 nv10_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state)
77 struct dcb_gpio_entry *ent = nouveau_bios_gpio_entry(dev, tag);
78 uint32_t reg, shift, mask, value;
83 if (!get_gpio_location(ent, ®, &shift, &mask))
86 value = ((ent->invert ? 1 : 0) ^ (state ? 1 : 0)) << shift;
87 mask = ~(mask << shift);
89 NVWriteCRTC(dev, 0, reg, value | (NVReadCRTC(dev, 0, reg) & mask));