1 files changed, 108 insertions, 0 deletions

diff --git a/firmware/target/arm/as3525/sansa-clipv2/button-clip.c b/firmware/target/arm/as3525/sansa-clipv2/button-clip.c
new file mode 100644
index 0000000000..4291665e3d
--- /dev/null
+++ b/firmware/target/arm/as3525/sansa-clipv2/button-clip.c
@@ -0,0 +1,108 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2008 François Dinel
+ * Copyright ©   2008-2009 Rafaël Carré
+ *
+ * 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.
+ *
+ ****************************************************************************/
+#include "button-target.h"
+#include "as3525v2.h"
+#include "kernel.h"
+
+/* FIXME : use Clipv1 like driver (FS#10285) */
+
+void button_init_device(void)
+{
+    GPIOA_DIR &= ~((1<<7) | (1<<3));
+    GPIOD_DIR &= ~((1<<2) | (1<<1) | (1<<0));
+    GPIOD_PIN(3) = 1<<3;
+    GPIOD_PIN(4) = 1<<4;
+    GPIOD_PIN(5) = 1<<5;
+    GPIOD_DIR |= ((1<<5) | (1<<4) | (1<<3));
+}
+
+int button_read_device(void)
+{
+    int result = 0;
+    static unsigned power_counter = 0;
+
+    if(button_hold())
+    {
+        power_counter = HZ;
+        return 0;
+    }
+
+    /* direct GPIO connections */
+    /* read power, but not if hold button was just released, since
+     * you basically always hit power due to the slider mechanism after
+     * releasing hold (wait 1 sec) */
+    if (power_counter)
+        power_counter--;
+
+    if (GPIOA_PIN(7) && !power_counter)
+        result |= BUTTON_POWER;
+
+    /* This is a keypad using D3-D5 as columns and D0-D2 as rows */
+
+    GPIOD_PIN(3) = 0x00; /* activate D3 */
+    asm volatile ("nop\nnop\nnop\nnop\nnop\n"); /* wait a bit for reliable results */
+
+    /* D3D0 is unused */
+
+    if (!GPIOD_PIN(1))
+        result |= BUTTON_VOL_UP;
+
+    if (!GPIOD_PIN(2))
+        result |= BUTTON_UP;
+
+    GPIOD_PIN(3) = 1<<3;
+
+    GPIOD_PIN(4) = 0x00; /* activate D4 */
+    asm volatile ("nop\nnop\nnop\nnop\nnop\n");
+
+    if (!GPIOD_PIN(0))
+        result |= BUTTON_LEFT;
+
+    if (!GPIOD_PIN(1))
+        result |= BUTTON_SELECT;
+
+    if (!GPIOD_PIN(2))
+        result |= BUTTON_RIGHT;
+
+    GPIOD_PIN(4) = 1<<4;
+
+    GPIOD_PIN(5) = 0x00; /* activate D5 */
+    asm volatile ("nop\nnop\nnop\nnop\nnop\n");
+
+    if (!GPIOD_PIN(0))
+        result |= BUTTON_DOWN;
+
+    if (!GPIOD_PIN(1))
+        result |= BUTTON_VOL_DOWN;
+
+    if (!GPIOD_PIN(2))
+        result |= BUTTON_HOME;
+
+    GPIOD_PIN(5) = 1<<5;
+
+    return result;
+}
+
+bool button_hold(void)
+{
+    return (GPIOA_PIN(3) != 0);
+}