Meizu M6SP: initial button driver (adapted from Meizu M3)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@23559 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/s5l8700/meizu-m6sp/button-m6sp.c

@@ -0,0 +1,72 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 Bertrik Sikken
+ *
+ * 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 <stdbool.h>
+#include "config.h"
+
+#include "inttypes.h"
+#include "s5l8700.h"
+#include "button-target.h"
+
+/*  Button driver for the meizu M6SP
+    
+    Future improvements:
+    * touch strip support
+    * left/right buttons (probably part of touch strip)
+    * unify with m3/m6sl button driver if possible
+
+ */
+
+
+void button_init_device(void)
+{
+    PCON0 &= ~(0x3 << 10);  /* P0.5 hold switch */
+    PCON0 &= ~(0x3 << 14);  /* P0.7 enter button */
+    PCON1 &= ~(0xF << 12);  /* P1.3 menu button */
+    PCON1 &= ~(0xF << 16);  /* P1.4 play button */
+}
+
+int button_read_device(void)
+{
+    int buttons = 0;
+
+    if (button_hold()) {
+        return 0;
+    }
+
+    if ((PDAT0 & (1 << 7)) == 0) {
+        buttons |= BUTTON_ENTER;
+    }
+    if ((PDAT1 & (1 << 3)) == 0) {
+        buttons |= BUTTON_MENU;
+    }
+    if ((PDAT1 & (1 << 4)) == 0) {
+        buttons |= BUTTON_PLAY;
+    }
+    
+    return buttons;
+}
+
+bool button_hold(void)
+{
+    return ((PDAT0 & (1 << 5)) != 0);
+}
+

firmware/target/arm/s5l8700/meizu-m6sp/button-target.h

@@ -30,21 +30,18 @@ bool button_hold(void);
 void button_init_device(void);
 int button_read_device(void);
 
-/* Toshiba Gigabeat specific button codes */
+/* Meizu M6 specific button codes */
 
 #define BUTTON_LEFT         0x00000001
 #define BUTTON_RIGHT        0x00000002
-#define BUTTON_UP           0x00000004
+#define BUTTON_PLAY         0x00000004
-#define BUTTON_DOWN         0x00000008
+#define BUTTON_MENU         0x00000008
-
+#define BUTTON_SELECT       0x00000010  /* TODO: tap on the touch strip */
-#define BUTTON_SELECT       0x00000010
+#define BUTTON_ENTER        0x00000020
-
-#define BUTTON_MENU         0x00000020
-#define BUTTON_PLAY         0x00000040
 
 
-#define BUTTON_MAIN (BUTTON_MENU|BUTTON_LEFT|BUTTON_RIGHT\
+#define BUTTON_MAIN (BUTTON_LEFT|BUTTON_RIGHT|BUTTON_PLAY|BUTTON_MENU\
-                |BUTTON_UP|BUTTON_DOWN|BUTTON_SELECT|BUTTON_PLAY)
+                    |BUTTON_SELECT|BUTTON_ENTER)
 
 #define BUTTON_REMOTE 0