1 files changed, 77 insertions, 0 deletions

diff --git a/firmware/target/arm/imx31/gigabeat-s/gpio-imx31.h b/firmware/target/arm/imx31/gigabeat-s/gpio-imx31.h
new file mode 100644
index 0000000000..a197558ad4
--- /dev/null
+++ b/firmware/target/arm/imx31/gigabeat-s/gpio-imx31.h
@@ -0,0 +1,77 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (c) 2008 by Michael Sevakis
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef _GPIO_IMX31_H_
+#define _GPIO_IMX31_H_
+
+#include "gpio-target.h"
+
+#define USE_GPIO1_EVENTS (1 << 0)
+#define USE_GPIO2_EVENTS (1 << 1)
+#define USE_GPIO3_EVENTS (1 << 2)
+
+enum gpio_module_number
+{
+    __GPIO_NUM_START = -1,
+#if (GPIO_EVENT_MASK & USE_GPIO1_EVENTS)
+    GPIO1_NUM,
+#endif
+#if (GPIO_EVENT_MASK & USE_GPIO2_EVENTS)
+    GPIO2_NUM,
+#endif
+#if (GPIO_EVENT_MASK & USE_GPIO3_EVENTS)
+    GPIO3_NUM,
+#endif
+    GPIO_NUM_GPIO,
+};
+
+/* Possible values for gpio interrupt line config */
+enum gpio_int_sense_enum
+{
+    GPIO_SENSE_LOW_LEVEL = 0, /* High-level sensitive */
+    GPIO_SENSE_HIGH_LEVEL,    /* Low-level sensitive */
+    GPIO_SENSE_RISING,        /* Rising-edge sensitive */
+    GPIO_SENSE_FALLING,       /* Falling-edge sensitive */
+};
+
+#define GPIO_SENSE_CONFIG_MASK 0x3
+
+/* Pending events will be called in array order */
+
+/* Describes a single event for a pin */
+struct gpio_event
+{
+    int line;                       /* Line number (0-31) */
+    enum gpio_int_sense_enum sense; /* Type of sense */
+    int (*callback)(void);          /* Callback function (return nonzero
+                                     * to indicate this event was handled) */
+};
+
+/* Describes the events attached to a port */
+struct gpio_event_list
+{
+    int priority;                    /* Interrupt priority for this GPIO */
+    unsigned count;                  /* Count of events */
+    const struct gpio_event *events; /* List of events */
+};
+
+void gpio_init(void);
+bool gpio_enable_event(enum gpio_module_number gpio, unsigned id);
+void gpio_disable_event(enum gpio_module_number gpio, unsigned id);
+
+#endif /* _GPIO_IMX31_H_ */