1/*
 2 * Copyright 2011 Red Hat Inc.
 3 *
 4 * Permission is hereby granted, free of charge, to any person obtaining a
 5 * copy of this software and associated documentation files (the "Software"),
 6 * to deal in the Software without restriction, including without limitation
 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 8 * and/or sell copies of the Software, and to permit persons to whom the
 9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23#ifndef __NOUVEAU_GPIO_H__
24#define __NOUVEAU_GPIO_H__
25
26struct gpio_func {
27	u8 func;
28	u8 line;
29	u8 log[2];
30};
31
32/* nouveau_gpio.c */
33int  nouveau_gpio_create(struct drm_device *);
34void nouveau_gpio_destroy(struct drm_device *);
35int  nouveau_gpio_init(struct drm_device *);
36void nouveau_gpio_fini(struct drm_device *);
37void nouveau_gpio_reset(struct drm_device *);
38int  nouveau_gpio_drive(struct drm_device *, int idx, int line,
39			int dir, int out);
40int  nouveau_gpio_sense(struct drm_device *, int idx, int line);
41int  nouveau_gpio_find(struct drm_device *, int idx, u8 tag, u8 line,
42		       struct gpio_func *);
43int  nouveau_gpio_set(struct drm_device *, int idx, u8 tag, u8 line, int state);
44int  nouveau_gpio_get(struct drm_device *, int idx, u8 tag, u8 line);
45int  nouveau_gpio_irq(struct drm_device *, int idx, u8 tag, u8 line, bool on);
46void nouveau_gpio_isr(struct drm_device *, int idx, u32 mask);
47int  nouveau_gpio_isr_add(struct drm_device *, int idx, u8 tag, u8 line,
48			  void (*)(void *, int state), void *data);
49void nouveau_gpio_isr_del(struct drm_device *, int idx, u8 tag, u8 line,
50			  void (*)(void *, int state), void *data);
51
52static inline bool
53nouveau_gpio_func_valid(struct drm_device *dev, u8 tag)
54{
55	struct gpio_func func;
56	return (nouveau_gpio_find(dev, 0, tag, 0xff, &func)) == 0;
57}
58
59static inline int
60nouveau_gpio_func_set(struct drm_device *dev, u8 tag, int state)
61{
62	return nouveau_gpio_set(dev, 0, tag, 0xff, state);
63}
64
65static inline int
66nouveau_gpio_func_get(struct drm_device *dev, u8 tag)
67{
68	return nouveau_gpio_get(dev, 0, tag, 0xff);
69}
70
71#endif