From b95fe1afc694ab97b6f39fc4bd0baa238e687a8f Mon Sep 17 00:00:00 2001
From: Daniel Stenberg <daniel@haxx.se>
Date: Tue, 1 Oct 2002 10:59:36 +0000
Subject: Mark A. Hillebrand's patch that offers a new setting that if enabled,
 keeps the backlight on all the time while the charger is connected.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@2464 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/backlight.c | 40 +++++++++++++++++++++++++++++++++++++---
 firmware/backlight.h |  3 ++-
 2 files changed, 39 insertions(+), 4 deletions(-)

(limited to 'firmware')

diff --git a/firmware/backlight.c b/firmware/backlight.c
index 4dcdea917c..8a7c4ceb76 100644
--- a/firmware/backlight.c
+++ b/firmware/backlight.c
@@ -25,6 +25,7 @@
 #include "debug.h"
 #include "rtc.h"
 #include "usb.h"
+#include "power.h"
 
 #define BACKLIGHT_ON 1
 #define BACKLIGHT_OFF 2
@@ -34,6 +35,11 @@ static char backlight_stack[DEFAULT_STACK_SIZE];
 static char backlight_thread_name[] = "backlight";
 static struct event_queue backlight_queue;
 
+#ifdef HAVE_CHARGE_CTRL
+static bool charger_was_inserted = 0;
+static bool backlight_on_when_charging = 0;
+#endif
+
 static int backlight_timer;
 static int backlight_timeout = 5;
 
@@ -52,9 +58,22 @@ void backlight_thread(void)
         switch(ev.id)
         {
             case BACKLIGHT_ON:
+#ifdef HAVE_CHARGE_CTRL
+                if( backlight_on_when_charging && charger_inserted() )
+                {
+                    /* Forcing to zero keeps the lights on */
+                    backlight_timer = 0;
+                }
+                else
+                {
+                backlight_timer = HZ*timeout_value[backlight_timeout];
+                }
+#else
                 backlight_timer = HZ*timeout_value[backlight_timeout];
+#endif
                 if(backlight_timer < 0)
                 {
+                    backlight_timer = 0;    /* timer value 0 will not get ticked */
 #ifdef HAVE_RTC
                     /* Disable square wave */
                     rtc_write(0x0a, rtc_read(0x0a) & ~0x40);
@@ -62,7 +81,8 @@ void backlight_thread(void)
                     PADR |= 0x4000;
 #endif  
                 }
-                else if(backlight_timer)
+                /* else if(backlight_timer) */
+                else 
                 {
 #ifdef HAVE_RTC
                     /* Enable square wave */
@@ -105,14 +125,28 @@ void backlight_off(void)
     queue_post(&backlight_queue, BACKLIGHT_OFF, NULL);
 }
 
-void backlight_time(int value)
+void backlight_set_timeout(int seconds)
+{
+    backlight_timeout = seconds;
+    backlight_on();
+}
+
+void backlight_set_on_when_charging(bool yesno)
 {
-    backlight_timeout = value;
+    backlight_on_when_charging = yesno;
     backlight_on();
 }
 
 void backlight_tick(void)
 {
+#ifdef HAVE_CHARGE_CTRL
+    bool charger_is_inserted = charger_inserted();
+    if( backlight_on_when_charging && (charger_was_inserted != charger_is_inserted) )
+    {
+        backlight_on();
+    }
+    charger_was_inserted = charger_is_inserted;
+#endif
     if(backlight_timer)
     {
         backlight_timer--;
diff --git a/firmware/backlight.h b/firmware/backlight.h
index dca1f214f3..77049e3ce8 100644
--- a/firmware/backlight.h
+++ b/firmware/backlight.h
@@ -23,6 +23,7 @@ void backlight_init(void);
 void backlight_on(void);
 void backlight_off(void);
 void backlight_tick(void);
-void backlight_time(int seconds);
+void backlight_set_timeout(int seconds);
+void backlight_set_on_when_charging(bool yesno);
 
 #endif
-- 
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