From 8d3591ae80def909418affe56268e019d23a86a3 Mon Sep 17 00:00:00 2001
From: Marcin Bukat <marcin.bukat@gmail.com>
Date: Sat, 3 Jul 2010 20:20:42 +0000
Subject: HD200 - add support for remote in button_read_device()

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27258 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/coldfire/mpio/hd200/button-hd200.c | 60 +++++++++++++++++++---
 1 file changed, 54 insertions(+), 6 deletions(-)

diff --git a/firmware/target/coldfire/mpio/hd200/button-hd200.c b/firmware/target/coldfire/mpio/hd200/button-hd200.c
index e7272fa295..880f5fd338 100644
--- a/firmware/target/coldfire/mpio/hd200/button-hd200.c
+++ b/firmware/target/coldfire/mpio/hd200/button-hd200.c
@@ -28,9 +28,12 @@
 
 void button_init_device(void)
 {
-    /* Set GPIO56 (main PLAY) as general purpose inputs */
-    or_l((1<<24),&GPIO1_FUNCTION);
-    and_l(~(1<<24),&GPIO1_ENABLE);
+    /* GPIO56 (main PLAY) 
+     * GPIO41 (remote PLAY)
+     * as general purpose inputs 
+     */
+    or_l((1<<24)|(1<<9),&GPIO1_FUNCTION);
+    and_l(~((1<<24)|(1<<9)),&GPIO1_ENABLE);
 }
 
 bool button_hold(void)
@@ -39,6 +42,10 @@ bool button_hold(void)
     return (GPIO1_READ & (1<<4))?true:false;
 }
 
+bool remote_button_hold(void)
+{
+    return adc_scan(ADC_REMOTE)<50?true:false;
+}
 
 /*
  * Get button pressed from hardware
@@ -48,15 +55,17 @@ int button_read_device(void)
     int btn = BUTTON_NONE;
     int data = 0;
     static bool hold_button = false;
+    static bool remote_hold_button = false;
 
     bool hold_button_old;
 
-    /* normal buttons */
+    /* read hold buttons status */
     hold_button_old = hold_button;
     hold_button = button_hold();
-    
+    remote_hold_button = remote_button_hold();
     
 #ifndef BOOTLOADER
+    /* Only main hold affects backlight */
     if (hold_button != hold_button_old)
         backlight_hold_changed(hold_button);
 #endif
@@ -65,7 +74,7 @@ int button_read_device(void)
     {
         data = adc_scan(ADC_BUTTONS);
 
-        if (data < 2250) // valid button
+        if (data < 2250) /* valid button */
         {
 	    if (data < 900) /* middle */
             {
@@ -101,12 +110,51 @@ int button_read_device(void)
         }
     }
 
+    if (!remote_hold_button)
+    {
+        data = adc_scan(ADC_REMOTE);
+
+        if (data < 2050) /* valid button */
+        {
+	    if (data < 950) /* middle */
+            {
+                if (data < 650)
+                {
+                    if (data < 400)
+                    {
+                        if (data > 250)
+                            /* 250 - 400 */
+                            btn = BUTTON_RC_VOL_DOWN;
+                    }
+                    else /* 650 - 400 */
+                        btn = BUTTON_RC_VOL_UP;
+                }
+                else /* 950 - 650 */
+                    btn = BUTTON_RC_NEXT;
+            }
+            else /* 2050 - 950 */
+            {
+                if (data < 1900)
+                {
+                    if (data < 1350)
+                        /* 1350 - 900 */
+                        btn = BUTTON_RC_PREV;
+                }
+                else /* 2050 - 1900 */
+                    btn = BUTTON_RC_SELECT;
+            }
+        }
+    }
 
     data = GPIO1_READ;
 
     /* GPIO56 active high main PLAY/PAUSE/ON */
     if (!hold_button && ((data & (1<<24))))
         btn |= BUTTON_PLAY;
+
+    /* GPIO41 active high remote PLAY/PAUSE/ON */
+    if (!remote_hold_button && ((data & (1<<9))))
+        btn |= BUTTON_RC_PLAY;
         
     return btn;
 }
-- 
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