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
---
 apps/lang/english.lang     |  5 +++++
 apps/settings.c            | 36 +++++++++++++++++++++++++++++-------
 apps/settings.h            |  8 ++++++--
 apps/settings_menu.c       | 17 +++++++++++++++--
 firmware/backlight.c       | 40 +++++++++++++++++++++++++++++++++++++---
 firmware/backlight.h       |  3 ++-
 uisimulator/common/stubs.c |  5 +++++
 7 files changed, 99 insertions(+), 15 deletions(-)

diff --git a/apps/lang/english.lang b/apps/lang/english.lang
index afea869bee..9ff2b66e44 100644
--- a/apps/lang/english.lang
+++ b/apps/lang/english.lang
@@ -864,3 +864,8 @@ id: LANG_PM_UNITS_PER_READ
 desc: in the peak meter menu
 eng: "Units per read"
 new: 
+
+id: LANG_BACKLIGHT_ON_WHEN_CHARGING
+desc: in display_settings_menu
+eng: "Backlight on when charging"
+new:
diff --git a/apps/settings.c b/apps/settings.c
index 1b4f864ec5..450a85b2da 100644
--- a/apps/settings.c
+++ b/apps/settings.c
@@ -74,7 +74,7 @@ offset  abs
 0x08    0x1c    <loudness byte>
 0x09    0x1d    <bass boost byte>
 0x0a    0x1e    <contrast byte>
-0x0b    0x1f    <backlight byte>
+0x0b    0x1f    <backlight_on_when_charging, backlight_timeout>
 0x0c    0x20    <poweroff timer byte>
 0x0d    0x21    <resume settings byte>
 0x0e    0x22    <shuffle,dirfilter,sort_case,discharge,statusbar,show_hidden,
@@ -270,7 +270,16 @@ int settings_save( void )
     config_block[0x9] = (unsigned char)global_settings.bass_boost;
     
     config_block[0xa] = (unsigned char)global_settings.contrast;
-    config_block[0xb] = (unsigned char)global_settings.backlight;
+
+#ifdef HAVE_CHARGE_CTRL
+    if( global_settings.backlight_on_when_charging ) {
+        config_block[0xb] = (unsigned char) (global_settings.backlight_timeout + 128);
+    } else {
+        config_block[0xb] = (unsigned char)global_settings.backlight_timeout;
+    }
+#else
+    config_block[0xb] = (unsigned char)global_settings.backlight_timeout;
+#endif
     config_block[0xc] = (unsigned char)global_settings.poweroff;
     config_block[0xd] = (unsigned char)global_settings.resume;
     
@@ -366,8 +375,15 @@ void settings_load(void)
             if ( global_settings.contrast < MIN_CONTRAST_SETTING )
                 global_settings.contrast = DEFAULT_CONTRAST_SETTING;
         }
+#ifdef HAVE_CHARGE_CTRL
+        if (config_block[0xb] != 0xFF) {
+            global_settings.backlight_timeout = config_block[0xb] & 127;
+            global_settings.backlight_on_when_charging = config_block[0xb] & 128 ? 1 : 0;
+        }
+#else
         if (config_block[0xb] != 0xFF)
-            global_settings.backlight = config_block[0xb];
+            global_settings.backlight_timeout = config_block[0xb];
+#endif
         if (config_block[0xc] != 0xFF)
             global_settings.poweroff = config_block[0xc];
         if (config_block[0xd] != 0xFF)
@@ -432,7 +448,10 @@ void settings_load(void)
     }
     lcd_set_contrast(global_settings.contrast);
     lcd_scroll_speed(global_settings.scroll_speed);
-    backlight_time(global_settings.backlight);
+    backlight_set_timeout(global_settings.backlight_timeout);
+#ifdef HAVE_CHARGE_CTRL
+    backlight_set_on_when_charging(global_settings.backlight_on_when_charging);
+#endif
     ata_spindown(global_settings.disk_spindown);
     set_poweroff_timeout(global_settings.poweroff);
 #ifdef HAVE_CHARGE_CTRL
@@ -615,7 +634,10 @@ void settings_reset(void) {
     global_settings.resume      = RESUME_ASK;
     global_settings.contrast    = DEFAULT_CONTRAST_SETTING;
     global_settings.poweroff    = DEFAULT_POWEROFF_SETTING;
-    global_settings.backlight   = DEFAULT_BACKLIGHT_SETTING;
+    global_settings.backlight_timeout   = DEFAULT_BACKLIGHT_TIMEOUT_SETTING;
+#ifdef HAVE_CHARGE_CTRL
+    global_settings.backlight_on_when_charging   = DEFAULT_BACKLIGHT_ON_WHEN_CHARGING_SETTING;
+#endif
     global_settings.dirfilter   = SHOW_MUSIC;
     global_settings.sort_case   = false;
     global_settings.statusbar   = true;
@@ -654,10 +676,10 @@ void settings_display(void)
             global_settings.loudness,
             global_settings.bass_boost );
 
-    DEBUGF( "contrast:\t%d\npoweroff:\t%d\nbacklight:\t%d\n",
+    DEBUGF( "contrast:\t%d\npoweroff:\t%d\nbacklight_timeout:\t%d\n",
             global_settings.contrast,
             global_settings.poweroff,
-            global_settings.backlight );
+            global_settings.backlight_timeout );
 #endif
 }
 
diff --git a/apps/settings.h b/apps/settings.h
index bbc7bb3dcc..eed0b61c20 100644
--- a/apps/settings.h
+++ b/apps/settings.h
@@ -63,7 +63,10 @@ struct user_settings
 
     int contrast;   /* lcd contrast:         0-100 0=low 100=high            */
     int poweroff;   /* power off timer */
-    int backlight;  /* backlight off timer:  0-100 0=never:each 1% = 10 secs */
+    int backlight_timeout;  /* backlight off timeout:  0-18 0=never,1=always,then according to timeout_values[] */
+#ifdef HAVE_CHARGE_CTRL
+    bool backlight_on_when_charging;
+#endif
     bool discharge; /* maintain charge of at least: false = 90%, true = 10%  */
 
     /* resume settings */
@@ -144,7 +147,8 @@ extern char rockboxdir[];
 #endif
 #define MIN_CONTRAST_SETTING        5
 #define DEFAULT_POWEROFF_SETTING    0
-#define DEFAULT_BACKLIGHT_SETTING   5
+#define DEFAULT_BACKLIGHT_TIMEOUT_SETTING   5
+#define DEFAULT_BACKLIGHT_ON_WHEN_CHARGING_SETTING   0
 #define DEFAULT_FF_REWIND_MIN_STEP  FF_REWIND_1000
 #define DEFAULT_FF_REWIND_ACCEL_SETTING 3
 
diff --git a/apps/settings_menu.c b/apps/settings_menu.c
index 3cb270dafe..4e521bca84 100644
--- a/apps/settings_menu.c
+++ b/apps/settings_menu.c
@@ -144,6 +144,16 @@ static bool resume(void)
                        names, 3, NULL );
 }
 
+#ifdef HAVE_CHARGE_CTRL
+static bool backlight_on_when_charging(void)
+{
+    bool result = set_bool(str(LANG_BACKLIGHT_ON_WHEN_CHARGING),
+                           &global_settings.backlight_on_when_charging);
+    backlight_set_on_when_charging(global_settings.backlight_on_when_charging);
+    return result;
+}
+#endif
+
 static bool backlight_timer(void)
 {
     char* names[] = { str(LANG_OFF), str(LANG_ON),
@@ -151,8 +161,8 @@ static bool backlight_timer(void)
                       "6s ", "7s ", "8s ", "9s ", "10s",
                       "15s", "20s", "25s", "30s", "45s",
                       "60s", "90s"};
-    return set_option(str(LANG_BACKLIGHT), &global_settings.backlight, 
-                      names, 19, backlight_time );
+    return set_option(str(LANG_BACKLIGHT), &global_settings.backlight_timeout,
+                      names, 19, backlight_set_timeout );
 }
 
 static bool poweroff_idle_timer(void)
@@ -377,6 +387,9 @@ static bool display_settings_menu(void)
     struct menu_items items[] = {
         { str(LANG_SCROLL_MENU),     scroll_speed    },  
         { str(LANG_BACKLIGHT),       backlight_timer },
+#ifdef HAVE_CHARGE_CTRL
+        { str(LANG_BACKLIGHT_ON_WHEN_CHARGING), backlight_on_when_charging },
+#endif
         { str(LANG_CONTRAST),        contrast        },  
 #ifdef HAVE_LCD_BITMAP
         { str(LANG_PM_MENU),         peak_meter_menu },  
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
diff --git a/uisimulator/common/stubs.c b/uisimulator/common/stubs.c
index 3534497e45..98e1f75182 100644
--- a/uisimulator/common/stubs.c
+++ b/uisimulator/common/stubs.c
@@ -123,3 +123,8 @@ void lcd_set_contrast( int x )
 {
     (void)x;
 }
+
+void backlight_set_timeout(int seconds)
+{
+  (void)seconds;
+}
-- 
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