Hi!
...they certainly need more work. .7. version is newer but incomplete.
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--- ./drivers/power.ofic/Makefile 2009-10-06 13:51:29.0 +0200
+++ ./drivers/power/Makefile 2009-10-11 16:12:09.0 +0200
@@ -24,6 +24,7 @@
obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o
obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o
obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
+obj-m += spitz_battery.o
obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
diff -ur ./drivers/power.ofic/power_supply_sysfs.c ./drivers/power/power_supply_sysfs.c
--- ./drivers/power.ofic/power_supply_sysfs.c 2009-10-06 13:51:29.0 +0200
+++ ./drivers/power/power_supply_sysfs.c 2009-10-15 05:45:46.0 +0200
@@ -39,7 +39,8 @@
static ssize_t power_supply_show_property(struct device *dev,
struct device_attribute *attr,
- char *buf) {
+ char *buf)
+{
static char *status_text[] = {
Unknown, Charging, Discharging, Not charging, Full
};
@@ -135,7 +136,8 @@
static ssize_t power_supply_show_static_attrs(struct device *dev,
struct device_attribute *attr,
- char *buf) {
+ char *buf)
+{
static char *type_text[] = { Battery, UPS, Mains, USB };
struct power_supply *psy = dev_get_drvdata(dev);
diff -ur ./drivers/power.ofic/spitz_battery.c ./drivers/power/spitz_battery.c
--- ./drivers/power.ofic/spitz_battery.c 2009-10-11 16:14:11.0 +0200
+++ ./drivers/power/spitz_battery.c 2009-10-22 07:27:52.0 +0200
@@ -0,0 +1,430 @@
+/*
+ * Battery and Power Management code for the Sharp SL-3000c
+ *
+ * Copyright (c) 2009 Pavel Machek pa...@ucw.cz
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Li-ion batteries are angry beasts, and they like to explode.
+ * If angry lithium comes your way, the hw was misdesigned.
+ *
+ */
+#include linux/platform_device.h
+#include linux/kernel.h
+#include linux/module.h
+#include linux/power_supply.h
+#include linux/delay.h
+#include linux/spinlock.h
+#include linux/interrupt.h
+#include linux/gpio.h
+
+#include asm/mach-types.h
+#include mach/spitz.h
+#include mach/sharpsl.h
+#include mach/sharpsl_pm.h
+
+#include ../../arch/arm/mach-pxa/sharpsl.h
+
+extern struct sharpsl_pm_status sharpsl_pm;
+
+
+struct spitz_bat {
+ struct power_supply psy;
+
+ bool (*is_present)(struct spitz_bat *bat);
+};
+
+static struct spitz_bat spitz_bat_main, spitz_ac;
+
+extern int sharpsl_pm_pxa_read_max(int channel);
+
+int basic_current = 125; /* miliAmp */
+int battery_resistance = 422; /* miliOhm */
+
+/* 422 seems to be suitable for very old, 1Ah battery.
+ 2Ah battery probably has better resistance */
+
+/* Unfortunately, resistance depends on state of charge, current
+ * direction and temperature.
+ *
+ * Ouch, and dependency is actually _not_ too simple. It is lowest
+ * at 3.55V, very slowly rises at 4V (approximately linear dependency),
+ * and quickly rises towards 3.2V (in something exponential-looking).
+ *
+ * It is about same at 25Celsius and 40Celsius, and about 2.5x the value
+ * on 0Celsius, rising _very_ sharply.
+ *
+ * Li-ion should only be charged between 0 and 45 Celsius, and discharged
+ * between -20 and 60 celsius.
+ */
+
+extern int backlight_current;
+
+int battery_current(void)
+{
+ int intensity = sharpsl_pm.machinfo-backlight_get_status ? sharpsl_pm.machinfo-backlight_get_status() : 0;
+
+ return basic_current + backlight_current;
+}
+
+int liion_internal_voltage(int voltage, int current_ma)
+{
+ return voltage + (battery_resistance * current_ma / 1000);
+}
+
+int liion_expected_voltage(int internal_voltage, int current_ma)
+{
+ return internal_voltage - (battery_resistance * current_ma / 1000);
+}
+
+/* returns mV */
+int liion_voltage(void)
+{
+ /* Thanks to Stanislav B. ADC has 3.3V as reference,
+ is connected to battery over 47kOhm,
+ and to ground over 100kOhm. */
+ return (sharpsl_pm.machinfo-read_devdata(SHARPSL_BATT_VOLT) * 147 * 33)/256;
+}
+
+/* See for example http://www.kokam.com/english/biz/rc.html for
+ * voltage/capacity characteristic. I assume it is going to be
+ * reasonably similar to li-ion used in collie.
+ *
+ */
+
+/*
+ { 420, 100 },
+ { 417, 95 }, means it will report 100% between 418 and 420
+ */
+
+struct battery_thresh battery_levels[] = {
+ { 3980, 100 },
+ { 3900, 95 },
+ { 3860, 90 },
+ { 3800, 85 },
+ { 3760, 80 },
+ { 3720, 74 },
+ { 3680, 69 },
+ { 3620, 65 },
+ { 3570, 59 },
+ { 3560, 55 },
+ { 3550, 48 },
+ { 3530, 45 },
+ { 3510, 39 },
+ { 3490, 33 },
+ { 3470, 29 },
+ { 3450, 23 },
+ { 3410, 16 },
+ {0, 0 },
+};
+
+int get_percentage(void)
+{
+ int i = ARRAY_SIZE(battery_levels);
+
