1 files changed, 157 insertions, 0 deletions

diff --git a/firmware/target/arm/s3c2440/gigabeat-fx/button-meg-fx.c b/firmware/target/arm/s3c2440/gigabeat-fx/button-meg-fx.c
new file mode 100644
index 0000000000..71d45c385c
--- /dev/null
+++ b/firmware/target/arm/s3c2440/gigabeat-fx/button-meg-fx.c
@@ -0,0 +1,157 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2006 by Linus Nielsen Feltzing
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#include <stdlib.h>
+#include "config.h"
+#include "cpu.h"
+#include "system.h"
+#include "button.h"
+#include "kernel.h"
+#include "backlight.h"
+#include "adc.h"
+#include "system.h"
+#include "backlight-target.h"
+
+static bool headphones_detect;
+static bool hold_button        = false;
+
+static int const remote_buttons[] =
+{
+    BUTTON_NONE,    /* Headphones connected - remote disconnected */
+    BUTTON_SELECT,
+    BUTTON_MENU,    /* could be changed to BUTTON_A */
+    BUTTON_LEFT,
+    BUTTON_RIGHT,
+    BUTTON_UP,      /* could be changed to BUTTON_VOL_UP */
+    BUTTON_DOWN,    /* could be changed to BUTTON_VOL_DOWN */
+    BUTTON_NONE,    /* Remote control attached - no buttons pressed */
+    BUTTON_NONE,    /* Nothing in the headphone socket */
+};
+
+
+
+
+
+void button_init_device(void)
+{
+    /* Power, Remote Play & Hold switch */
+}
+
+
+
+inline bool button_hold(void)
+{
+    return (GPGDAT & (1 << 15));
+}
+
+
+
+int button_read_device(void)
+{
+    int touchpad;
+    int buttons;
+    static int lastbutton;
+    unsigned short remote_adc;
+    int btn = BUTTON_NONE;
+    bool hold_button_old;
+
+    /* normal buttons */
+    hold_button_old = hold_button;
+    hold_button = button_hold();
+
+#ifndef BOOTLOADER
+    /* give BL notice if HB state chaged */
+    if (hold_button != hold_button_old)
+        backlight_hold_changed(hold_button);
+#endif
+
+    /* See header for ADC values when remote control buttons are pressed */
+    /* Only one button can be sensed at a time on the remote. */
+    /* Need to filter the remote button because the ADC is so fast */
+    remote_adc = adc_read(ADC_HPREMOTE);
+    btn = remote_buttons[(remote_adc + 64) / 128];
+    if (btn != lastbutton)
+    {
+        /* if the buttons dont agree twice in a row, then its none */
+        lastbutton = btn;
+        btn = BUTTON_NONE;
+    }
+
+    /* Check for hold first - exit if asserted with no button pressed */
+    if (hold_button)
+        return btn;
+
+    /* the side buttons - Check before doing all of the work on each bit */
+    buttons = GPGDAT & 0x1F;
+    if (buttons)
+    {
+        if (buttons & (1 << 0))
+            btn |= BUTTON_POWER;
+
+        if (buttons & (1 << 1))
+            btn |= BUTTON_MENU;
+
+        if (buttons & (1 << 2))
+            btn |= BUTTON_VOL_UP;
+
+        if (buttons & (1 << 3))
+            btn |= BUTTON_VOL_DOWN;
+
+        if (buttons & (1 << 4))
+            btn |= BUTTON_A;
+    }
+    
+    /* the touchpad */
+    touchpad = GPJDAT & 0x10C9;
+    if (touchpad)
+    {
+        if (touchpad & (1 << 0))
+            btn |= BUTTON_UP;
+
+        if (touchpad & (1 << 12))
+            btn |= BUTTON_RIGHT;
+
+        if (touchpad & (1 << 6))
+            btn |= BUTTON_DOWN;
+
+        if (touchpad & (1 << 7))
+            btn |= BUTTON_LEFT;
+
+        if (touchpad & (1 << 3))
+            btn |= BUTTON_SELECT;
+    }
+    
+    return btn;
+}
+
+
+
+bool headphones_inserted(void)
+{
+    unsigned short remote_adc = adc_read(ADC_HPREMOTE);
+    if (remote_adc != ADC_READ_ERROR)
+    {
+        /* If there is nothing in the headphone socket, the ADC reads high */
+        if (remote_adc < 940)
+            headphones_detect = true;
+        else
+            headphones_detect = false;
+    }
+    return headphones_detect;
+}