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
26 struct gpio_func {
27 u8 func;
28 u8 line;
29 u8 log[2];
30 };
31
32 /* nouveau_gpio.c */
33 int nouveau_gpio_create(struct drm_device *);
34 void nouveau_gpio_destroy(struct drm_device *);
35 int nouveau_gpio_init(struct drm_device *);
36 void nouveau_gpio_fini(struct drm_device *);
37 void nouveau_gpio_reset(struct drm_device *);
38 int nouveau_gpio_drive(struct drm_device *, int idx, int line,
39 int dir, int out);
40 int nouveau_gpio_sense(struct drm_device *, int idx, int line);
41 int nouveau_gpio_find(struct drm_device *, int idx, u8 tag, u8 line,
42 struct gpio_func *);
43 int nouveau_gpio_set(struct drm_device *, int idx, u8 tag, u8 line, int state);
44 int nouveau_gpio_get(struct drm_device *, int idx, u8 tag, u8 line);
45 int nouveau_gpio_irq(struct drm_device *, int idx, u8 tag, u8 line, bool on);
46 void nouveau_gpio_isr(struct drm_device *, int idx, u32 mask);
47 int nouveau_gpio_isr_add(struct drm_device *, int idx, u8 tag, u8 line,
48 void (*)(void *, int state), void *data);
49 void nouveau_gpio_isr_del(struct drm_device *, int idx, u8 tag, u8 line,
50 void (*)(void *, int state), void *data);
51
52 static inline bool
nouveau_gpio_func_valid(struct drm_device * dev,u8 tag)53 nouveau_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
59 static inline int
nouveau_gpio_func_set(struct drm_device * dev,u8 tag,int state)60 nouveau_gpio_func_set(struct drm_device *dev, u8 tag, int state)
61 {
62 return nouveau_gpio_set(dev, 0, tag, 0xff, state);
63 }
64
65 static inline int
nouveau_gpio_func_get(struct drm_device * dev,u8 tag)66 nouveau_gpio_func_get(struct drm_device *dev, u8 tag)
67 {
68 return nouveau_gpio_get(dev, 0, tag, 0xff);
69 }
70
71 #endif
72