1 files changed, 122 insertions, 0 deletions

diff --git a/firmware/target/hosted/ibasso/powermgmt-ibasso.c b/firmware/target/hosted/ibasso/powermgmt-ibasso.c
new file mode 100644
index 0000000000..7df0064097
--- /dev/null
+++ b/firmware/target/hosted/ibasso/powermgmt-ibasso.c
@@ -0,0 +1,122 @@
+/***************************************************************************
+ *             __________               __   ___
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
+ * Copyright (C) 2014 by Mario Basister: iBasso DX90 port
+ * Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
+ * Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
+ *
+ * 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 <stdio.h>
+
+#include "config.h"
+#include "debug.h"
+#include "panic.h"
+
+#include "debug-ibasso.h"
+#include "sysfs-ibasso.h"
+
+
+/* Based on batterymonitor with PISEN and Samsung SIII battery. */
+
+
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+    3600
+};
+
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+    3500
+};
+
+
+/*
+    Averages at percent of running time from five measuremnts with PISEN and Samsung SIII battery
+    during normal usage.
+
+    Mongo default values (?)
+    < 3660 (0%), < 3730 (1% - 10%), < 3780 (11% - 20%), < 3830 (21% - 40%), < 3950 (41% - 60%),
+    < 4080 (61% - 80%), > 4081 (81% - 100%)
+*/
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+    { 3522, 3660, 3720, 3752, 3784, 3827, 3896, 3978, 4072, 4168, 4255 }
+};
+
+
+/* Copied from percent_to_volt_discharge. */
+const unsigned short percent_to_volt_charge[11] =
+{
+    3500, 3544, 3578, 3623, 3660, 3773, 3782, 3853, 3980, 4130, 4360
+};
+
+
+static int _battery_present = -1;
+
+
+int _battery_voltage(void)
+{
+    /*TRACE;*/
+
+    if(   (_battery_present == -1)
+       && (! sysfs_get_int(SYSFS_BATTERY_PRESENT, &_battery_present)))
+    {
+        /* This check is only done once at startup. */
+
+        DEBUGF("ERROR %s: Can not get current battery availabilty.", __func__);
+        _battery_present = 1;
+    }
+
+    int val;
+
+    if(_battery_present == 1)
+    {
+        /* Battery is present. */
+
+        /*
+            /sys/class/power_supply/battery/voltage_now
+            Voltage in microvolt.
+        */
+        if(! sysfs_get_int(SYSFS_BATTERY_VOLTAGE_NOW, &val))
+        {
+            DEBUGF("ERROR %s: Can not get current battery voltage.", __func__);
+            return 0;
+        }
+    }
+    else
+    {
+        /*
+            No battery, so we have to be running solely from USB power.
+            This will prevent Rockbox from forcing shutdown due to low power.
+        */
+
+        /*
+            /sys/class/power_supply/usb/voltage_now
+            Voltage in microvolt.
+        */
+        if(! sysfs_get_int(SYSFS_USB_POWER_VOLTAGE_NOW, &val))
+        {
+            DEBUGF("ERROR %s: Can not get current USB voltage.", __func__);
+            return 0;
+        }
+    }
+
+    return(val / 1000);
+}