From 7abf2b53a462612808d46d6d77a7f35261a0e5a3 Mon Sep 17 00:00:00 2001
From: Michael Sevakis <jethead71@rockbox.org>
Date: Fri, 9 Apr 2010 01:21:53 +0000
Subject: Gigabeat S/i.MX31: Sort files in the /target tree into things that
 are SoC-generic (into /imx31) and player-specific (into /gigabeat-s, based
 upon current appearances). Move i2s clock init into the appropriate file.
 Housekeeping only-- no functional changes.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25547 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/arm/imx31/gpio-imx31.h | 114 +++++++++++++++++++++++++++++++++
 1 file changed, 114 insertions(+)
 create mode 100644 firmware/target/arm/imx31/gpio-imx31.h

(limited to 'firmware/target/arm/imx31/gpio-imx31.h')

diff --git a/firmware/target/arm/imx31/gpio-imx31.h b/firmware/target/arm/imx31/gpio-imx31.h
new file mode 100644
index 0000000000..72956d4efa
--- /dev/null
+++ b/firmware/target/arm/imx31/gpio-imx31.h
@@ -0,0 +1,114 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (c) 2008 by Michael Sevakis
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * 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
+
+/* Static registration mechanism for imx31 GPIO interrupts */
+#define USE_GPIO1_EVENTS (1 << 0)
+#define USE_GPIO2_EVENTS (1 << 1)
+#define USE_GPIO3_EVENTS (1 << 2)
+
+/* Module indexes defined by which GPIO modules are used */
+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,
+};
+
+/* Module corresponding to the event ID is identified by range */
+enum gpio_event_bases
+{
+#if (GPIO_EVENT_MASK & USE_GPIO1_EVENTS)
+    GPIO1_EVENT_FIRST = 32*GPIO1_NUM,
+#endif
+#if (GPIO_EVENT_MASK & USE_GPIO2_EVENTS)
+    GPIO2_EVENT_FIRST = 32*GPIO2_NUM,
+#endif
+#if (GPIO_EVENT_MASK & USE_GPIO3_EVENTS)
+    GPIO3_EVENT_FIRST = 32*GPIO3_NUM,
+#endif
+};
+
+#include "gpio-target.h"
+
+/* 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
+
+/* Register map for each module */
+struct gpio_map
+{
+    volatile uint32_t dr;           /* 00h */
+    volatile uint32_t gdir;         /* 04h */
+    volatile uint32_t psr;          /* 08h */
+    union
+    {
+        struct
+        {
+            volatile uint32_t icr1; /* 0Ch */
+            volatile uint32_t icr2; /* 10h */
+        };
+        volatile uint32_t icr[2];   /* 0Ch */
+    };
+    volatile uint32_t imr;          /* 14h */
+    volatile uint32_t isr;          /* 18h */
+};
+
+/* Pending events will be called in array order which allows easy
+ * pioritization */
+
+/* Describes a single event for a pin */
+struct gpio_event
+{
+    uint32_t mask;                  /* mask: 1 << (0...31) */
+    enum gpio_int_sense_enum sense; /* Type of sense */
+    void (*callback)(void);         /* Callback function */
+};
+
+/* Describes the events attached to a port */
+struct gpio_event_list
+{
+    int ints_priority;               /* Interrupt priority for this GPIO */
+    unsigned count;                  /* Count of events for the module */
+    const struct gpio_event *events; /* List of events */
+};
+
+void gpio_init(void);
+bool gpio_enable_event(enum gpio_event_ids id);
+void gpio_disable_event(enum gpio_event_ids id);
+
+#endif /* GPIO_IMX31_H */
-- 
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