1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * Copyright (c) 2008 by Michael Sevakis
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
20 ****************************************************************************/
24 /* Static registration mechanism for imx31 GPIO interrupts */
25 #define USE_GPIO1_EVENTS (1 << 0)
26 #define USE_GPIO2_EVENTS (1 << 1)
27 #define USE_GPIO3_EVENTS (1 << 2)
29 /* Module indexes defined by which GPIO modules are used */
30 enum gpio_module_number
32 __GPIO_NUM_START
= -1,
33 #if (GPIO_EVENT_MASK & USE_GPIO1_EVENTS)
36 #if (GPIO_EVENT_MASK & USE_GPIO2_EVENTS)
39 #if (GPIO_EVENT_MASK & USE_GPIO3_EVENTS)
45 /* Possible values for gpio interrupt line config */
46 enum gpio_int_sense_enum
48 GPIO_SENSE_LOW_LEVEL
= 0, /* High-level sensitive */
49 GPIO_SENSE_HIGH_LEVEL
, /* Low-level sensitive */
50 GPIO_SENSE_RISING
, /* Rising-edge sensitive */
51 GPIO_SENSE_FALLING
, /* Falling-edge sensitive */
54 #define GPIO_SENSE_CONFIG_MASK 0x3
56 /* Pending events will be called in array order which allows easy
59 /* Describes a single event for a pin */
62 unsigned long mask
; /* mask: 1 << (0...31) */
63 enum gpio_int_sense_enum sense
; /* Type of sense */
64 void (*callback
)(void); /* Callback function */
67 /* Module corresponding to the event ID is identified by range */
70 #if (GPIO_EVENT_MASK & USE_GPIO1_EVENTS)
71 GPIO1_EVENT_FIRST
= 32*GPIO1_NUM
,
73 #if (GPIO_EVENT_MASK & USE_GPIO2_EVENTS)
74 GPIO2_EVENT_FIRST
= 32*GPIO2_NUM
,
76 #if (GPIO_EVENT_MASK & USE_GPIO3_EVENTS)
77 GPIO3_EVENT_FIRST
= 32*GPIO3_NUM
,
81 #include "gpio-target.h"
84 bool gpio_enable_event(enum gpio_event_ids id
);
85 void gpio_disable_event(enum gpio_event_ids id
);
87 #endif /* GPIO_IMX31_H */