From 0fac492c3da8b46ad1cf5a668e5d851c63443a94 Mon Sep 17 00:00:00 2001
From: Jens Arnold <amiconn@rockbox.org>
Date: Fri, 17 Aug 2007 06:45:18 +0000
Subject: First step of powermanagement rework: * Move target specific stuff
 into target tree, starting with battery voltage tables and voltage reading.
 (This revealed some incorrect percent_to_voltage_charging mappings). *
 Voltage reading on 1st gen ipods is now correct. * Clean up obsolete config
 #defines.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14375 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/target/arm/ipod/powermgmt-ipod-pcf.c | 90 +++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 firmware/target/arm/ipod/powermgmt-ipod-pcf.c

(limited to 'firmware/target/arm/ipod/powermgmt-ipod-pcf.c')

diff --git a/firmware/target/arm/ipod/powermgmt-ipod-pcf.c b/firmware/target/arm/ipod/powermgmt-ipod-pcf.c
new file mode 100644
index 0000000000..d2f88a20f2
--- /dev/null
+++ b/firmware/target/arm/ipod/powermgmt-ipod-pcf.c
@@ -0,0 +1,90 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Heikki Hannikainen, Uwe Freese
+ * Revisions copyright (C) 2005 by Gerald Van Baren
+ *
+ * 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 "config.h"
+#include "adc.h"
+#include "powermgmt.h"
+
+const unsigned short battery_level_dangerous[BATTERY_TYPES_COUNT] =
+{
+#ifdef IPOD_NANO
+    3330
+#elif defined IPOD_VIDEO
+    3450
+#else
+    /* FIXME: calibrate value for other 3G+ ipods */
+    3380
+#endif
+};
+
+const unsigned short battery_level_shutoff[BATTERY_TYPES_COUNT] =
+{
+#ifdef IPOD_NANO
+    3230
+#elif defined IPOD_VIDEO
+    3450
+#else
+    /* FIXME: calibrate value for other 3G+ ipods */
+    3020
+#endif
+};
+
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging disabled */
+const unsigned short percent_to_volt_discharge[BATTERY_TYPES_COUNT][11] =
+{
+#ifdef IPOD_NANO
+    /* measured values */
+    { 3230, 3620, 3700, 3730, 3750, 3780, 3830, 3890, 3950, 4030, 4160 },
+#elif defined IPOD_VIDEO
+    /* iPOD Video 30GB Li-Ion 400mAh, first approach based upon measurements */
+    { 3450, 3670, 3710, 3750, 3790, 3830, 3870, 3930, 4010, 4100, 4180 },
+#else
+    /* FIXME: calibrate value for other 3G+ ipods */
+    /* Table is "inherited" from iriver H100. */
+    { 3370, 3650, 3700, 3740, 3780, 3820, 3870, 3930, 4000, 4080, 4160 }
+#endif
+};
+
+#if CONFIG_CHARGING
+/* voltages (millivolt) of 0%, 10%, ... 100% when charging enabled */
+const unsigned short percent_to_volt_charge[11] =
+{
+#ifdef IPOD_NANO
+    /* measured values */
+    3230, 3620, 3700, 3730, 3750, 3780, 3830, 3890, 3950, 4030, 4160
+#elif defined IPOD_VIDEO
+    /* iPOD Video 30GB Li-Ion 400mAh, first approach based upon measurements */
+    3450, 3670, 3710, 3750, 3790, 3830, 3870, 3930, 4010, 4100, 4180
+#else
+    /* FIXME: calibrate value for other 3G+ ipods */
+    /* Table is "inherited" from iriver H100. */
+    3540, 3860, 3930, 3980, 4000, 4020, 4040, 4080, 4130, 4180, 4230
+#endif
+};
+#endif /* CONFIG_CHARGING */
+
+#define BATTERY_SCALE_FACTOR 6000
+/* full-scale ADC readout (2^10) in millivolt */
+
+/* Returns battery voltage from ADC [millivolts] */
+unsigned int battery_adc_voltage(void)
+{
+    return (adc_read(ADC_UNREG_POWER) * BATTERY_SCALE_FACTOR) >> 10;
+}
-- 
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