From 7cafe7aa2f2aa671a39bd82dfd227e2aa22ef30f Mon Sep 17 00:00:00 2001
From: Linus Nielsen Feltzing <linus@haxx.se>
Date: Thu, 4 Jul 2002 16:09:23 +0000
Subject: First version

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1333 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/power.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++++
 firmware/drivers/power.h | 35 ++++++++++++++++++
 2 files changed, 128 insertions(+)
 create mode 100644 firmware/drivers/power.c
 create mode 100644 firmware/drivers/power.h

(limited to 'firmware/drivers')

diff --git a/firmware/drivers/power.c b/firmware/drivers/power.c
new file mode 100644
index 0000000000..9ddbbdbbb2
--- /dev/null
+++ b/firmware/drivers/power.c
@@ -0,0 +1,93 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "sh7034.h"
+#include <stdbool.h>
+#include "config.h"
+#include "adc.h"
+#include "power.h"
+
+#ifndef SIMULATOR
+
+bool charger_inserted(void)
+{
+#ifdef ARCHOS_RECORDER
+    return adc_read(ADC_BATTERY) > 0x200;
+#else
+    return (PADR & 1) == 0;
+#endif
+}
+
+/* Returns battery level in percent */
+int battery_level(void)
+{
+    int level;
+    
+    level = adc_read(ADC_UNREG_POWER) - BATTERY_LEVEL_SHUTDOWN;
+    if(level < 0)
+        level = 0;
+    
+    if(level > BATTERY_LEVEL_FULL)
+        level = BATTERY_LEVEL_FULL;
+        
+    return (level * 100) / BATTERY_RANGE;
+}
+
+void charger_enable(bool on)
+{
+#ifdef ARCHOS_RECORDER
+    if(on)
+        PBDR &= ~0x20;
+    else
+        PBDR |= 0x20;
+#else
+    on = on;
+#endif
+}
+
+void ide_power_enable(bool on)
+{
+#ifdef ARCHOS_RECORDER
+    if(on)
+        PADR |= 0x20;
+    else
+        PADR &= ~0x20;
+#else
+    on = on;
+#endif
+}
+
+#else
+
+bool charger_inserted(void)
+{
+    return false;
+}
+
+/* Returns battery level in percent */
+int battery_level(void)
+{
+    return 100;
+}
+
+void charger_enable(bool on)
+{
+    on = on;
+}
+
+#endif /* SIMULATOR */
diff --git a/firmware/drivers/power.h b/firmware/drivers/power.h
new file mode 100644
index 0000000000..819c1983d9
--- /dev/null
+++ b/firmware/drivers/power.h
@@ -0,0 +1,35 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef _POWER_H_
+#define _POWER_H_
+
+#define BATTERY_LEVEL_SHUTDOWN (4500000 / BATTERY_SCALE_FACTOR) /* 4.5V */
+#define BATTERY_LEVEL_DANGEROUS (4750000 / BATTERY_SCALE_FACTOR) /* 4.75V */
+#define BATTERY_LEVEL_FULL (5550000 / BATTERY_SCALE_FACTOR) /* 5.55V */
+
+#define BATTERY_RANGE (BATTERY_LEVEL_FULL - BATTERY_LEVEL_SHUTDOWN)
+
+bool charger_inserted(void);
+void charger_enable(bool on);
+void ide_power_enable(bool on);
+
+/* Returns battery level in percent */
+int battery_level(void);
+
+#endif
-- 
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