From f81ce592e5a48c95a0c125a73092217c53014874 Mon Sep 17 00:00:00 2001
From: Bertrik Sikken <bertrik@sikken.nl>
Date: Sat, 20 Jun 2009 14:29:21 +0000
Subject: [PATCH] Enable charging on the Sansa Fuze (charging/discharging
 curves are still uncalibrated)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21394 a1c6a512-1295-4272-9138-f99709370657
---
 apps/debug_menu.c                             |  4 +-
 firmware/SOURCES                              |  3 +-
 firmware/export/config-fuze.h                 |  4 +-
 firmware/target/arm/as3525/powermgmt-target.h | 10 ++++
 .../arm/as3525/sansa-fuze/powermgmt-fuze.c    | 52 +++++++++++++++++++
 5 files changed, 68 insertions(+), 5 deletions(-)
 create mode 100644 firmware/target/arm/as3525/sansa-fuze/powermgmt-fuze.c

diff --git a/apps/debug_menu.c b/apps/debug_menu.c
index 92ef222d98..bb6dd1033a 100644
--- a/apps/debug_menu.c
+++ b/apps/debug_menu.c
@@ -107,7 +107,7 @@
 #endif
 
 #if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200) \
-    || defined(SANSA_CLIP)
+    || defined(SANSA_CLIP) || defined(SANSA_FUZE)
 #include "ascodec.h"
 #include "as3514.h"
 #endif
@@ -1765,7 +1765,7 @@ static bool view_battery(void)
                 }
                     
                 lcd_puts(0, line++, buf);
-#elif defined(SANSA_E200) || defined(SANSA_C200) || defined(SANSA_CLIP)
+#elif defined(SANSA_E200) || defined(SANSA_C200) || defined(SANSA_CLIP) || defined(SANSA_FUZE)
                 const int first = CHARGE_STATE_DISABLED;
                 static const char * const chrgstate_strings[] =
                 {
diff --git a/firmware/SOURCES b/firmware/SOURCES
index 742a582d6f..65652b8523 100644
--- a/firmware/SOURCES
+++ b/firmware/SOURCES
@@ -1166,7 +1166,8 @@ target/arm/as3525/sansa-fuze/lcd-fuze.c
 target/arm/as3525/lcd-as-e200v2-fuze.S
 target/arm/as3525/backlight-e200v2-fuze.c
 #ifndef BOOTLOADER
-target/arm/as3525/powermgmt-as3525.c
+target/arm/powermgmt-ascodec.c
+target/arm/as3525/sansa-fuze/powermgmt-fuze.c
 #endif /* !BOOTLOADER */
 #endif /* !SIMULATOR */
 #endif /* SANSA_FUZE */
diff --git a/firmware/export/config-fuze.h b/firmware/export/config-fuze.h
index a30f95e5b0..c8fae9aca9 100644
--- a/firmware/export/config-fuze.h
+++ b/firmware/export/config-fuze.h
@@ -148,8 +148,8 @@
 #define BATTERY_CAPACITY_INC 0          /* capacity increment */
 #define BATTERY_TYPES_COUNT  1          /* only one type */
 
-/* Hardware controlled charging? FIXME */
-#define CONFIG_CHARGING CHARGING_SIMPLE
+/* Charging implemented in a target-specific algorithm */
+#define CONFIG_CHARGING CHARGING_TARGET
 
 /* define this if the unit can be powered or charged via USB */
 #define HAVE_USB_POWER
diff --git a/firmware/target/arm/as3525/powermgmt-target.h b/firmware/target/arm/as3525/powermgmt-target.h
index 3f23d6d3d7..d458508275 100644
--- a/firmware/target/arm/as3525/powermgmt-target.h
+++ b/firmware/target/arm/as3525/powermgmt-target.h
@@ -42,6 +42,16 @@
 #define CHARGER_TOTAL_TIMER (4*3600*2)
 #define ADC_BATTERY         ADC_BVDD
 
+#elif defined(SANSA_FUZE)
+
+/* Check if topped-off and monitor voltage while plugged. */
+#define BATT_FULL_VOLTAGE   4160
+#define BATT_VAUTO_RECHARGE 4100
+#define BATT_CHG_V          CHG_V_4_20V
+#define BATT_CHG_I          CHG_I_200MA
+#define CHARGER_TOTAL_TIMER (4*3600*2)
+#define ADC_BATTERY         ADC_BVDD
+
 #else
 #error "Charger settings not defined!"
 #endif
diff --git a/firmware/target/arm/as3525/sansa-fuze/powermgmt-fuze.c b/firmware/target/arm/as3525/sansa-fuze/powermgmt-fuze.c
new file mode 100644
index 0000000000..d0d39912f2
--- /dev/null
+++ b/firmware/target/arm/as3525/sansa-fuze/powermgmt-fuze.c
@@ -0,0 +1,52 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright © 2008 Rafaël Carré
+ *
+ * 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 "config.h"
+
+/* The battery manufacturer's website shows discharge curves down to 3.0V,
+   so 'dangerous' and 'shutoff' levels of 3.4V and 3.3V should be safe.
+ */
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+    3400
+};
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+    3300
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+    /* TODO: simple linear uncalibrated curve */
+    { 3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200 }
+};
+
+#if CONFIG_CHARGING
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
+const unsigned short percent_to_volt_charge[11] =
+{
+    /* TODO: simple linear uncalibrated curve */
+    3300, 3390, 3480, 3570, 3660, 3750, 3840, 3930, 4020, 4110, 4200
+};
+#endif /* CONFIG_CHARGING */
+