26 files changed, 112 insertions, 136 deletions

diff --git a/firmware/backlight.c b/firmware/backlight.c
index aac438c673..76ffc6f0e4 100644
--- a/firmware/backlight.c
+++ b/firmware/backlight.c
@@ -156,14 +156,14 @@ static struct event_queue backlight_queue;
 
 static int backlight_timer;
 static int backlight_timeout = 5*HZ;
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
 static int backlight_timeout_plugged = 5*HZ;
 #endif
 
 #ifdef HAVE_REMOTE_LCD
 static int remote_backlight_timer;
 static int remote_backlight_timeout = 5*HZ;
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
 static int remote_backlight_timeout_plugged = 5*HZ;
 #endif
 #endif
@@ -370,7 +370,7 @@ void backlight_thread(void)
         {
 #ifdef HAVE_REMOTE_LCD
             case REMOTE_BACKLIGHT_ON:
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
                 if (charger_inserted()
 #ifdef HAVE_USB_POWER
                         || usb_powered()
@@ -399,7 +399,7 @@ void backlight_thread(void)
                 
 #endif /* HAVE_REMOTE_LCD */
             case BACKLIGHT_ON:
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
                 if (charger_inserted()
 #ifdef HAVE_USB_POWER
                         || usb_powered()
@@ -447,7 +447,7 @@ void backlight_thread(void)
 
 static void backlight_tick(void)
 {
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
     static bool charger_was_inserted = false;
     bool charger_is_inserted = charger_inserted()
 #ifdef HAVE_USB_POWER
@@ -463,7 +463,7 @@ static void backlight_tick(void)
 #endif
     }
     charger_was_inserted = charger_is_inserted;
-#endif /* HAVE_CHARGING */
+#endif /* CONFIG_CHARGING */
 
     if(backlight_timer)
     {
@@ -535,7 +535,7 @@ bool is_backlight_on(void)
 /* return value in ticks; 0 means always on, <0 means always off */
 int backlight_get_current_timeout(void)
 {
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
     if (charger_inserted()
 #ifdef HAVE_USB_POWER
             || usb_powered()
@@ -558,7 +558,7 @@ void backlight_set_timeout(int index)
     backlight_on();
 }
 
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
 void backlight_set_timeout_plugged(int index)
 {
     if((unsigned)index >= sizeof(backlight_timeout_value))
@@ -589,7 +589,7 @@ void remote_backlight_set_timeout(int index)
     remote_backlight_on();
 }
 
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
 void remote_backlight_set_timeout_plugged(int index)
 {
     if((unsigned)index >= sizeof(backlight_timeout_value))
@@ -603,7 +603,7 @@ void remote_backlight_set_timeout_plugged(int index)
 /* return value in ticks; 0 means always on, <0 means always off */
 int remote_backlight_get_current_timeout(void)
 {
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
     if (charger_inserted()
 #ifdef HAVE_USB_POWER
             || usb_powered()
diff --git a/firmware/drivers/button.c b/firmware/drivers/button.c
index 6513fb4a3a..216c51ea15 100644
--- a/firmware/drivers/button.c
+++ b/firmware/drivers/button.c
@@ -490,7 +490,7 @@ static void button_tick(void)
                                     || btn == BUTTON_RC_STOP
 #endif
                                     ) &&
-#if defined(HAVE_CHARGING) && !defined(HAVE_POWEROFF_WHILE_CHARGING)
+#if defined(CONFIG_CHARGING) && !defined(HAVE_POWEROFF_WHILE_CHARGING)
                                 !charger_inserted() &&
 #endif
                                 repeat_count > POWEROFF_COUNT)
@@ -1248,7 +1248,7 @@ static int button_read(void)
         backlight_on();
     }
     /* TODO: add light handling for the remote */
-    
+
     hold_button = button_hold();
     remote_hold_button = remote_button_hold();
 
diff --git a/firmware/drivers/power.c b/firmware/drivers/power.c
index c4b9fb5b7d..bda03b0f8b 100644
--- a/firmware/drivers/power.c
+++ b/firmware/drivers/power.c
@@ -29,7 +29,7 @@
 #include "pcf50606.h"
 #include "usb.h"
 
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
 bool charger_enabled;
 #endif
 
@@ -92,7 +92,7 @@ void power_init(void)
     or_b(0x20, &PBIORL); 
     or_b(0x20, &PBDRL);  /* hold power */
 #endif
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
     PBCR2 &= ~0x0c00;    /* GPIO for PB5 */
     or_b(0x20, &PBIORL); /* Set charging control bit to output */
     charger_enable(false); /* Default to charger OFF */
@@ -106,7 +106,7 @@ void power_init(void)
 }
 
 
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
 bool charger_inserted(void)
 {     
 #if defined(IRIVER_H100_SERIES) || defined(IRIVER_H300_SERIES)
@@ -115,7 +115,7 @@ bool charger_inserted(void)
     return (P7 & 0x80) == 0;
 #elif defined(IAUDIO_X5)
     return (GPIO1_READ & 0x01000000)?true:false;
-#elif defined(HAVE_CHARGE_CTRL)
+#elif CONFIG_CHARGING == CHARGING_CONTROL
     /* Recorder */
     return adc_read(ADC_EXT_POWER) > 0x100;
 #elif defined (HAVE_FMADC)
@@ -133,9 +133,9 @@ bool charger_inserted(void)
     return (PADR & 1) == 0;
 #endif
 }
-#endif /* HAVE_CHARGING */
+#endif /* CONFIG_CHARGING */
 
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
 void charger_enable(bool on)
 {
     if(on)
@@ -151,14 +151,22 @@ void charger_enable(bool on)
 }
 #endif
 
-#ifdef HAVE_CHARGE_STATE
+#if CONFIG_CHARGING == CHARGING_MONITOR
 /* Returns true if the unit is charging the batteries. */
 bool charging_state(void) {
-#if defined(IRIVER_H100_SERIES)
+#if CONFIG_BATTERY == BATT_LIION2200
+  /* We use the information from the ADC_EXT_POWER ADC channel, which
+    tells us the charging current from the LTC1734. When DC is
+    connected (either via the external adapter, or via USB), we try
+    to determine if it is actively charging or only maintaining the
+    charge. My tests show that ADC readings below about 0x80 means
+    that the LTC1734 is only maintaining the charge. */
+    return adc_read(ADC_EXT_POWER) >= 0x80;
+#elif defined(IRIVER_H100_SERIES) /* FIXME */
     return charger_inserted();
-#elif defined(IRIVER_H300_SERIES)
+#elif defined IRIVER_H300_SERIES
     return (GPIO_READ & 0x00800000)?true:false;
-#elif defined(IPOD_VIDEO)
+#elif defined IPOD_VIDEO
     return (GPIOB_INPUT_VAL & 0x01)?false:true;
 #endif
 }
diff --git a/firmware/export/config-fmrecorder.h b/firmware/export/config-fmrecorder.h
index 8711640e93..7a78d48822 100644
--- a/firmware/export/config-fmrecorder.h
+++ b/firmware/export/config-fmrecorder.h
@@ -90,8 +90,8 @@
 /* How to detect USB */
 #define USB_FMRECORDERSTYLE 1
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Hardware controlled charging with monitoring */
+#define CONFIG_CHARGING CHARGING_MONITOR
 
 /* The start address index for ROM builds */
 /* #define ROM_START 0x14010 for behind original Archos */
diff --git a/firmware/export/config-gigabeat.h b/firmware/export/config-gigabeat.h
index 83a92ce140..1ebbdbf908 100644
--- a/firmware/export/config-gigabeat.h
+++ b/firmware/export/config-gigabeat.h
@@ -61,8 +61,8 @@
 
 #define BATTERY_SCALE_FACTOR 23437 /* FIX: this value is picked at random */
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 #define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-gmini120.h b/firmware/export/config-gmini120.h
index 42424bb7b1..66ba7af09e 100644
--- a/firmware/export/config-gmini120.h
+++ b/firmware/export/config-gmini120.h
@@ -54,8 +54,8 @@
 #define BATTERY_SCALE_FACTOR 6465
 /* chosen values at random -- jyp */
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+#define CONFIG_CHARGING CHARGING_SIMPLE
 
 #define CPU_FREQ 30000000
 /* approximate value (and false in general since freq is variable) */
diff --git a/firmware/export/config-gminisp.h b/firmware/export/config-gminisp.h
index e066661061..8df7b0f5a1 100644
--- a/firmware/export/config-gminisp.h
+++ b/firmware/export/config-gminisp.h
@@ -45,8 +45,8 @@
 #define BATTERY_SCALE_FACTOR 6465
 /* chosen values at random -- jyp */
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+#define CONFIG_CHARGING CHARGING_SIMPLE
 
 #define CPU_FREQ 30000000
 /* approximate value (and false in general since freq is variable) */
diff --git a/firmware/export/config-h100.h b/firmware/export/config-h100.h
index d53adcec14..4461cc2d44 100644
--- a/firmware/export/config-h100.h
+++ b/firmware/export/config-h100.h
@@ -89,11 +89,9 @@
 #define BATTERY_TYPES_COUNT  1    /* only one type */
 #define BATTERY_SCALE_FACTOR 16665 /* FIX: this value is picked at random */
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
-
-/* For units with a hardware charger that reports charge state */
-#define HAVE_CHARGE_STATE 1
+/* Hardware controlled charging */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
+#define CONFIG_CHARGING CHARGING_MONITOR /* FIXME: remove that once monitoring is fixed properly */
 
 /* define this if the hardware can be powered off while charging */
 #define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-h120.h b/firmware/export/config-h120.h
index 34f5059b69..f2cd8c2665 100644
--- a/firmware/export/config-h120.h
+++ b/firmware/export/config-h120.h
@@ -84,11 +84,9 @@
 /* Define if we have a hardware defect that causes ticking on the audio line */
 #define HAVE_REMOTE_LCD_TICKING
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
-
-/* For units with a hardware charger that reports charge state */
-#define HAVE_CHARGE_STATE 1
+/* Hardware controlled charging */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
+#define CONFIG_CHARGING CHARGING_MONITOR /* FIXME: remove that once monitoring is fixed properly */
 
 /* define this if the hardware can be powered off while charging */
 #define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-h300.h b/firmware/export/config-h300.h
index ae1940c987..7ed54958ca 100644
--- a/firmware/export/config-h300.h
+++ b/firmware/export/config-h300.h
@@ -85,14 +85,8 @@
 /* Define if we have a hardware defect that causes ticking on the audio line */
 #define HAVE_REMOTE_LCD_TICKING
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
-
-/* For units with a hardware charger that reports charge state */
-#define HAVE_CHARGE_STATE 1
-
-/* define this if the hardware can be powered off while charging */
-#define HAVE_POWEROFF_WHILE_CHARGING
+/* Hardware controlled charging with monitoring */
+#define CONFIG_CHARGING CHARGING_MONITOR
 
 /* The size of the flash ROM */
 #define FLASH_SIZE 0x400000
diff --git a/firmware/export/config-iaudiox5.h b/firmware/export/config-iaudiox5.h
index 4690feb8fe..b16a142a28 100644
--- a/firmware/export/config-iaudiox5.h
+++ b/firmware/export/config-iaudiox5.h
@@ -65,8 +65,8 @@
 
 #define HAVE_TLV320
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 #define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-ifp7xx.h b/firmware/export/config-ifp7xx.h
index 9e5a432260..6247625618 100644
--- a/firmware/export/config-ifp7xx.h
+++ b/firmware/export/config-ifp7xx.h
@@ -56,8 +56,8 @@
 
 #define BATTERY_SCALE_FACTOR 16665 /* FIX: this value is picked at random */
 
-/* Define this if the platform can charge batteries */
-//#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 //#define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-ipod3g.h b/firmware/export/config-ipod3g.h
index a611dfdcaa..b3b5d14e85 100644
--- a/firmware/export/config-ipod3g.h
+++ b/firmware/export/config-ipod3g.h
@@ -68,8 +68,8 @@
 #define BATTERY_TYPES_COUNT  1    /* only one type */
 #define BATTERY_SCALE_FACTOR 5865
 
-/* Define this if the platform can charge batteries */
-//#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 //#define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-ipod4g.h b/firmware/export/config-ipod4g.h
index fa664acdb6..46abbdf72b 100644
--- a/firmware/export/config-ipod4g.h
+++ b/firmware/export/config-ipod4g.h
@@ -70,8 +70,8 @@
 #define BATTERY_TYPES_COUNT  1    /* only one type */
 #define BATTERY_SCALE_FACTOR 5865
 
-/* Define this if the platform can charge batteries */
-//#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 //#define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-ipodcolor.h b/firmware/export/config-ipodcolor.h
index b8f3d89346..e063e93737 100644
--- a/firmware/export/config-ipodcolor.h
+++ b/firmware/export/config-ipodcolor.h
@@ -69,8 +69,8 @@
 #define BATTERY_TYPES_COUNT  1    /* only one type */
 #define BATTERY_SCALE_FACTOR 5865
 
-/* Define this if the platform can charge batteries */
-//#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 //#define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-ipodmini.h b/firmware/export/config-ipodmini.h
index 64be801577..4871ea0acc 100644
--- a/firmware/export/config-ipodmini.h
+++ b/firmware/export/config-ipodmini.h
@@ -70,8 +70,8 @@
 #define BATTERY_TYPES_COUNT  1   /* only one type */
 #define BATTERY_SCALE_FACTOR 5865
 
-/* Define this if the platform can charge batteries */
-//#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 //#define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-ipodmini2g.h b/firmware/export/config-ipodmini2g.h
index 454309a786..adbb0973ac 100755
--- a/firmware/export/config-ipodmini2g.h
+++ b/firmware/export/config-ipodmini2g.h
@@ -73,8 +73,8 @@
 #define BATTERY_TYPES_COUNT  1   /* only one type */
 #define BATTERY_SCALE_FACTOR 5865
 
-/* Define this if the platform can charge batteries */
-//#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 //#define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-ipodnano.h b/firmware/export/config-ipodnano.h
index b7116bf249..3d4deb3abd 100644
--- a/firmware/export/config-ipodnano.h
+++ b/firmware/export/config-ipodnano.h
@@ -74,8 +74,8 @@
 #define BATTERY_TYPES_COUNT  1    /* only one type */
 #define BATTERY_SCALE_FACTOR 5865
 
-/* Define this if the platform can charge batteries */
-//#define HAVE_CHARGING 1
+/* Hardware controlled charging? FIXME */
+//#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* define this if the hardware can be powered off while charging */
 //#define HAVE_POWEROFF_WHILE_CHARGING
diff --git a/firmware/export/config-ipodvideo.h b/firmware/export/config-ipodvideo.h
index 1bbcfec157..79ef1a85ac 100644
--- a/firmware/export/config-ipodvideo.h
+++ b/firmware/export/config-ipodvideo.h
@@ -74,14 +74,12 @@
 #define BATTERY_TYPES_COUNT  1    /* only one type */
 #define BATTERY_SCALE_FACTOR 5865
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Hardware controlled charging with monitoring */
+#define CONFIG_CHARGING CHARGING_MONITOR
 
 /* define this if the hardware can be powered off while charging */
 //#define HAVE_POWEROFF_WHILE_CHARGING
 
-#define HAVE_CHARGE_STATE 1
-
 /* The start address index for ROM builds */
 #define ROM_START 0x00000000
 
diff --git a/firmware/export/config-player.h b/firmware/export/config-player.h
index 324a0a2300..3dfdb0e727 100644
--- a/firmware/export/config-player.h
+++ b/firmware/export/config-player.h
@@ -67,8 +67,8 @@
 /* How to detect USB */
 #define USB_PLAYERSTYLE 1
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Hardware controlled charging */
+#define CONFIG_CHARGING CHARGING_SIMPLE
 
 /* The start address index for ROM builds */
 /* #define ROM_START 0xD010 for behind original Archos */
diff --git a/firmware/export/config-recorder.h b/firmware/export/config-recorder.h
index 92dd07695d..854b1c1ade 100644
--- a/firmware/export/config-recorder.h
+++ b/firmware/export/config-recorder.h
@@ -45,9 +45,6 @@
 /* Define this if you have a SH7034 */
 #define CONFIG_CPU SH7034
 
-/* Define this if you have charging control */
-#define HAVE_CHARGE_CTRL
-
 /* Define this if you have ATA power-off control */
 #define HAVE_ATA_POWER_OFF
 
@@ -80,8 +77,8 @@
 /* How to detect USB */
 #define USB_RECORDERSTYLE 1
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Software controlled charging */
+#define CONFIG_CHARGING CHARGING_CONTROL
 
 /* The start address index for ROM builds */
 /* #define ROM_START 0x11010 for behind original Archos */
diff --git a/firmware/export/config-recorderv2.h b/firmware/export/config-recorderv2.h
index b508836080..09823cffb2 100644
--- a/firmware/export/config-recorderv2.h
+++ b/firmware/export/config-recorderv2.h
@@ -90,8 +90,8 @@
 /* How to detect USB */
 #define USB_FMRECORDERSTYLE 1
 
-/* Define this if the platform can charge batteries */
-#define HAVE_CHARGING 1
+/* Hardware controlled charging with monitoring */
+#define CONFIG_CHARGING CHARGING_MONITOR
 
 /* The start address index for ROM builds */
 /* #define ROM_START 0x12010 for behind original Archos */
diff --git a/firmware/export/config.h b/firmware/export/config.h
index d919b8b4f6..910aeca4eb 100644
--- a/firmware/export/config.h
+++ b/firmware/export/config.h
@@ -68,6 +68,11 @@
 #define BATT_3AAA       1000 /* Ondio */
 #define BATT_LIPOL1300  1300 /* the type used in iRiver h1x0 models */
 
+/* CONFIG_CHARGING */
+#define CHARGING_SIMPLE  1 /* Simple, hardware controlled charging */
+#define CHARGING_MONITOR 2 /* Hardware controlled charging with monitoring */
+#define CHARGING_CONTROL 3 /* Software controlled charging */
+
 /* CONFIG_LCD */
 #define LCD_GMINI100  0
 #define LCD_SSD1815   1 /* as used by Archos Recorders and Ondios */
diff --git a/firmware/export/power.h b/firmware/export/power.h
index be8ebda5b0..dc6c09d9f9 100644
--- a/firmware/export/power.h
+++ b/firmware/export/power.h
@@ -19,12 +19,12 @@
 #ifndef _POWER_H_
 #define _POWER_H_
 
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
 extern bool charger_enabled;
 void charger_enable(bool on);
 #endif
 
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
 bool charger_inserted(void);
 #endif
 
@@ -35,7 +35,7 @@ void ide_power_enable(bool on);
 
 void power_init(void);
 
-# ifdef HAVE_CHARGE_STATE
+# if CONFIG_CHARGING == CHARGING_MONITOR
 bool charging_state(void);
 # endif
 
diff --git a/firmware/export/powermgmt.h b/firmware/export/powermgmt.h
index 6c31aeec52..30fe60c293 100644
--- a/firmware/export/powermgmt.h
+++ b/firmware/export/powermgmt.h
@@ -28,7 +28,7 @@
 
 #ifndef SIMULATOR
 
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
 #define START_TOPOFF_CHG    85  /* Battery % to start at top-off */
 #define START_TRICKLE_CHG   95  /* Battery % to start at trickle */
 
@@ -59,23 +59,21 @@ extern int pid_p;                /* PID proportional term */
 extern int pid_i;                /* PID integral term */
 extern int trickle_sec;          /* trickle charge: How many seconds per minute are we charging actually? */
 
-#endif /* HAVE_CHARGE_CTRL */
+#endif /* CONFIG_CHARGING == CHARGING_CONTROL */
 
-#if defined(HAVE_CHARGE_CTRL) || \
-    (CONFIG_BATTERY == BATT_LIION2200) || \
-    defined(HAVE_CHARGE_STATE)
-typedef enum {
-    DISCHARGING,
-    CHARGING,
-    TOPOFF,
-    TRICKLE
+#if CONFIG_CHARGING >= CHARGING_MONITOR
+typedef enum {       /* sorted by increasing charging current */
+    DISCHARGING = 0, 
+    TRICKLE,         /* Can occur for CONFIG_CHARGING >= CHARGING_MONITOR */
+    TOPOFF,          /* Can occur for CONFIG_CHARGING == CHARGING_CONTROL */
+    CHARGING         /* Can occur for all CONFIG_CHARGING options */
 } charge_state_type;
 
 /* tells what the charger is doing */
 extern charge_state_type charge_state;
-#endif /* defined(HAVE_CHARGE_CTRL) || (CONFIG_BATTERY == BATT_LIION2200) */
+#endif /* CONFIG_CHARGING >= CHARGING_MONITOR */
 
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
 /*
  * Flag that the charger has been plugged in/removed: this is set for exactly
  * one time through the power loop when the charger has been plugged in.
diff --git a/firmware/powermgmt.c b/firmware/powermgmt.c
index 15977caed6..ee01fd862d 100644
--- a/firmware/powermgmt.c
+++ b/firmware/powermgmt.c
@@ -64,7 +64,7 @@
  * in it (one sample per minute).  This is only for very low level debug.
  */
 #undef  DEBUG_FILE
-#if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL)
+#if defined(DEBUG_FILE) && (CONFIG_CHARGING == CHARGING_CONTROL)
 #include "file.h"
 #define DEBUG_FILE_NAME   "/powermgmt.csv"
 #define DEBUG_MESSAGE_LEN 133
@@ -190,7 +190,7 @@ static const short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
 #endif
 };
 
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
 charger_input_state_type charger_input_state IDATA_ATTR;
 
 /* voltages (centivolt) of 0%, 10%, ... 100% when charging enabled */
@@ -207,15 +207,13 @@ static const short percent_to_volt_charge[11] =
     476, 544, 551, 556, 561, 564, 566, 576, 582, 584, 585 /* NiMH */
 #endif
 };
-#endif /* HAVE_CHARGING */
+#endif /* CONFIG_CHARGING */
 
-#if defined(HAVE_CHARGE_CTRL) || \
-    CONFIG_BATTERY == BATT_LIION2200 || \
-    defined(HAVE_CHARGE_STATE)
+#if CONFIG_CHARGING >= CHARGING_MONITOR
 charge_state_type charge_state;     /* charging mode */
 #endif
 
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
 int long_delta;                     /* long term delta battery voltage */
 int short_delta;                    /* short term delta battery voltage */
 bool disk_activity_last_cycle = false;         /* flag set to aid charger time
@@ -235,7 +233,7 @@ int trickle_sec = 0;                           /* how many seconds should the
                                                   charging? */
 int pid_p = 0;                      /* PID proportional term */
 int pid_i = 0;                      /* PID integral term */
-#endif /* HAVE_CHARGE_CTRL */
+#endif /* CONFIG_CHARGING == CHARGING_CONTROL */
 
 /*
  * Average battery voltage and charger voltage, filtered via a digital
@@ -366,7 +364,7 @@ static void battery_status_update(void)
 {
     int level;
 
-#if defined(HAVE_CHARGE_CTRL) || defined(HAVE_CHARGE_STATE)
+#if CONFIG_CHARGING >= CHARGING_MONITOR
     if (charge_state == DISCHARGING) {
         level = voltage_to_percent(battery_centivolts,
                 percent_to_volt_discharge[battery_type]);
@@ -397,7 +395,7 @@ static void battery_status_update(void)
     /* calculate estimated remaining running time */
     /* discharging: remaining running time */
     /* charging:    remaining charging time */
-#if defined(HAVE_CHARGE_CTRL) || defined(HAVE_CHARGE_STATE)
+#if CONFIG_CHARGING >= CHARGING_MONITOR
     if (charge_state == CHARGING) {
         powermgmt_est_runningtime_min = (100 - level) * battery_capacity / 100
                                       * 60 / (CURRENT_MAX_CHG - runcurrent());
@@ -425,7 +423,7 @@ static void handle_auto_poweroff(void)
     long timeout = poweroff_idle_timeout_value[poweroff_timeout]*60*HZ;
     int  audio_stat = audio_status();
 
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
     /*
      * Inhibit shutdown as long as the charger is plugged in.  If it is
      * unplugged, wait for a timeout period and then shut down.
@@ -458,7 +456,7 @@ static void handle_auto_poweroff(void)
             if(TIME_AFTER(current_tick, sleeptimer_endtick))
             {
                 audio_stop();
-#if defined(HAVE_CHARGING) && !defined(HAVE_POWEROFF_WHILE_CHARGING)
+#if defined(CONFIG_CHARGING) && !defined(HAVE_POWEROFF_WHILE_CHARGING)
                 if((charger_input_state == CHARGER) ||
                    (charger_input_state == CHARGER_PLUGGED))
                 {
@@ -538,7 +536,7 @@ static void power_thread_sleep(int ticks)
 
     while (ticks > 0) {
 
-#ifdef HAVE_CHARGING
+#ifdef CONFIG_CHARGING
         /*
          * Detect charger plugged/unplugged transitions.  On a plugged or
          * unplugged event, we return immediately, run once through the main
@@ -577,7 +575,7 @@ static void power_thread_sleep(int ticks)
             }
         }
 #endif
-#ifdef HAVE_CHARGE_STATE
+#if CONFIG_CHARGING == CHARGING_MONITOR
         switch (charger_input_state) {
             case CHARGER_UNPLUGGED:
             case NO_CHARGER:
@@ -593,7 +591,7 @@ static void power_thread_sleep(int ticks)
                 break;
         }
 
-#endif /* HAVE_CHARGE_STATE */
+#endif /* CONFIG_CHARGING == CHARGING_MONITOR */
 
         small_ticks = MIN(HZ/2, ticks);
         sleep(small_ticks);
@@ -628,13 +626,13 @@ static void power_thread_sleep(int ticks)
             battery_status_update();
 
         }
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
         if (ata_disk_is_active()) {
             /* flag hdd use for charging calculation */
             disk_activity_last_cycle = true;
         }
 #endif
-#if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL)
+#if defined(DEBUG_FILE) && (CONFIG_CHARGING == CHARGING_CONTROL)
         /*
          * If we have a lot of pending writes or if the disk is spining,
          * fsync the debug log file.
@@ -660,7 +658,7 @@ static void power_thread(void)
 {
     int i;
     short *phps, *phpd;         /* power history rotation pointers */
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
     unsigned int target_voltage = TRICKLE_VOLTAGE;    /* desired topoff/trickle
                                        * voltage level */
     int charge_max_time_idle = 0;     /* max. charging duration, calculated at
@@ -678,7 +676,7 @@ static void power_thread(void)
         BATT_AVE_SAMPLES;
     battery_centivolts = avgbat / BATT_AVE_SAMPLES / 10000;
 
-#if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL)
+#if defined(DEBUG_FILE) && (CONFIG_CHARGING == CHARGING_CONTROL)
     fd      = -1;
     wrcount = 0;
 #endif
@@ -694,25 +692,7 @@ static void power_thread(void)
         /* insert new value at the start, in centivolts 8-) */
         power_history[0] = battery_centivolts;
 
-#if CONFIG_BATTERY == BATT_LIION2200
-        /* We use the information from the ADC_EXT_POWER ADC channel, which
-           tells us the charging current from the LTC1734. When DC is
-           connected (either via the external adapter, or via USB), we try
-           to determine if it is actively charging or only maintaining the
-           charge. My tests show that ADC readings below about 0x80 means
-           that the LTC1734 is only maintaining the charge. */
-        if(charger_inserted()) {
-            if(adc_read(ADC_EXT_POWER) < 0x80) {
-                charge_state = TRICKLE;
-            } else {
-                charge_state = CHARGING;
-            }
-        } else {
-            charge_state = DISCHARGING;
-        }
-#endif /* # if CONFIG_BATTERY == BATT_LIION2200 */
-
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
         if (charger_input_state == CHARGER_PLUGGED) {
             pid_p = 0;
             pid_i = 0;
@@ -876,7 +856,7 @@ static void power_thread(void)
                 }
             }
         }
-        else if (charge_state > CHARGING)  /* top off or trickle */
+        else if (charge_state != DISCHARGING)  /* top off or trickle */
         {
             /*
              *Time to switch from topoff to trickle?
@@ -946,11 +926,11 @@ static void power_thread(void)
             snprintf(power_message, POWER_MESSAGE_LEN, "Charger: discharge");
         }
 
-#endif /* end HAVE_CHARGE_CTRL */
+#endif /* CONFIG_CHARGING == CHARGING_CONTROL */
 
         /* sleep for a minute */
 
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
         if(trickle_sec > 0) {
             charger_enable(true);
             power_thread_sleep(HZ * trickle_sec);
@@ -962,7 +942,7 @@ static void power_thread(void)
         power_thread_sleep(HZ * 60);
 #endif
 
-#if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL)
+#if defined(DEBUG_FILE) && (CONFIG_CHARGING == CHARGING_CONTROL)
         if(usb_inserted()) {
             if(fd >= 0) {
                 /* It is probably too late to close the file but we can try...*/
@@ -992,7 +972,7 @@ static void power_thread(void)
 #endif
         handle_auto_poweroff();
 
-#ifdef HAVE_CHARGE_CTRL
+#if CONFIG_CHARGING == CHARGING_CONTROL
         powermgmt_last_cycle_startstop_min++;
 #endif
     }
@@ -1029,7 +1009,7 @@ void cancel_shutdown(void)
 void shutdown_hw(void)
 {
 #ifndef SIMULATOR
-#if defined(DEBUG_FILE) && defined(HAVE_CHARGE_CTRL)
+#if defined(DEBUG_FILE) && (CONFIG_CHARGING == CHARGING_CONTROL)
     if(fd >= 0) {
         close(fd);
         fd = -1;