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-rw-r--r--recipes-kernel/linux/linux-yocto-dev/h3600/0007-power-add-driver-for-battery-reading-on-iPaq-h3xxx.patch350
1 files changed, 350 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-yocto-dev/h3600/0007-power-add-driver-for-battery-reading-on-iPaq-h3xxx.patch b/recipes-kernel/linux/linux-yocto-dev/h3600/0007-power-add-driver-for-battery-reading-on-iPaq-h3xxx.patch
new file mode 100644
index 0000000..fb34e62
--- /dev/null
+++ b/recipes-kernel/linux/linux-yocto-dev/h3600/0007-power-add-driver-for-battery-reading-on-iPaq-h3xxx.patch
@@ -0,0 +1,350 @@
+From e6d787e84661a0bc3992fcf1d0c77075ca9b3b90 Mon Sep 17 00:00:00 2001
+From: Dmitry Artamonow <mad_soft@inbox.ru>
+Date: Sat, 21 Mar 2009 16:28:50 +0300
+Subject: [PATCH 7/7] power: add driver for battery reading on iPaq h3xxx
+
+This adds a driver for reading the battery status of the
+battery connected to the Atmel microcontroller on the
+iPAQ h3xxx series.
+
+Based on a driver from handhelds.org 2.6.21 kernel, written
+by Alessandro GARDICH.
+
+Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ drivers/power/Kconfig | 7 +
+ drivers/power/Makefile | 1 +
+ drivers/power/ipaq_micro_battery.c | 290 +++++++++++++++++++++++++++++++++++++
+ 3 files changed, 298 insertions(+)
+ create mode 100644 drivers/power/ipaq_micro_battery.c
+
+diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
+index ba6975123071..73cfcdf28a36 100644
+--- a/drivers/power/Kconfig
++++ b/drivers/power/Kconfig
+@@ -137,6 +137,13 @@ config BATTERY_COLLIE
+ Say Y to enable support for the battery on the Sharp Zaurus
+ SL-5500 (collie) models.
+
++config BATTERY_IPAQ_MICRO
++ tristate "iPAQ Atmel Micro ASIC battery driver"
++ depends on MFD_IPAQ_MICRO
++ help
++ Choose this option if you want to monitor battery status on
++ Compaq/HP iPAQ h3100 and h3600.
++
+ config BATTERY_WM97XX
+ bool "WM97xx generic battery driver"
+ depends on TOUCHSCREEN_WM97XX=y
+diff --git a/drivers/power/Makefile b/drivers/power/Makefile
+index ee54a3e4c90a..dfa894273926 100644
+--- a/drivers/power/Makefile
++++ b/drivers/power/Makefile
+@@ -25,6 +25,7 @@ obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o
+ obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o
+ obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
+ obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o
++obj-$(CONFIG_BATTERY_IPAQ_MICRO) += ipaq_micro_battery.o
+ obj-$(CONFIG_BATTERY_WM97XX) += wm97xx_battery.o
+ obj-$(CONFIG_BATTERY_SBS) += sbs-battery.o
+ obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
+diff --git a/drivers/power/ipaq_micro_battery.c b/drivers/power/ipaq_micro_battery.c
+new file mode 100644
+index 000000000000..f875137e4d9c
+--- /dev/null
++++ b/drivers/power/ipaq_micro_battery.c
+@@ -0,0 +1,290 @@
++/*
++ * 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.
++ *
++ * h3xxx atmel micro companion support, battery subdevice
++ * based on previous kernel 2.4 version
++ * Author : Alessandro Gardich <gremlin@gremlin.it>
++ * Author : Linus Walleij <linus.walleij@linaro.org>
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/platform_device.h>
++#include <linux/mfd/ipaq-micro.h>
++#include <linux/power_supply.h>
++#include <linux/workqueue.h>
++
++#define BATT_PERIOD 100000 /* 10 seconds in milliseconds */
++
++#define MICRO_BATT_CHEM_ALKALINE 0x01
++#define MICRO_BATT_CHEM_NICD 0x02
++#define MICRO_BATT_CHEM_NIMH 0x03
++#define MICRO_BATT_CHEM_LION 0x04
++#define MICRO_BATT_CHEM_LIPOLY 0x05
++#define MICRO_BATT_CHEM_NOT_INSTALLED 0x06
++#define MICRO_BATT_CHEM_UNKNOWN 0xff
++
++#define MICRO_BATT_STATUS_HIGH 0x01
++#define MICRO_BATT_STATUS_LOW 0x02
++#define MICRO_BATT_STATUS_CRITICAL 0x04
++#define MICRO_BATT_STATUS_CHARGING 0x08
++#define MICRO_BATT_STATUS_CHARGEMAIN 0x10
++#define MICRO_BATT_STATUS_DEAD 0x20 /* Battery will not charge */
++#define MICRO_BATT_STATUS_NOTINSTALLED 0x20 /* For expansion pack batteries */
++#define MICRO_BATT_STATUS_FULL 0x40 /* Battery fully charged */
++#define MICRO_BATT_STATUS_NOBATTERY 0x80
++#define MICRO_BATT_STATUS_UNKNOWN 0xff
++
++struct micro_battery {
++ struct ipaq_micro *micro;
++ struct workqueue_struct *wq;
++ struct delayed_work update;
++ u8 ac;
++ u8 chemistry;
++ unsigned int voltage;
++ u16 temperature;
++ u8 flag;
++};
++
++static void micro_battery_work(struct work_struct *work)
++{
++ struct micro_battery *mb = container_of(work,
++ struct micro_battery, update.work);
++ struct ipaq_micro_msg msg_battery = {
++ .id = MSG_BATTERY,
++ };
++ struct ipaq_micro_msg msg_sensor = {
++ .id = MSG_THERMAL_SENSOR,
++ };
++
++ /* First send battery message */
++ ipaq_micro_tx_msg_sync(mb->micro, &msg_battery);
++ if (msg_battery.rx_len < 4)
++ pr_info("ERROR");
++
++ /*
++ * Returned message format:
++ * byte 0: 0x00 = Not plugged in
++ * 0x01 = AC adapter plugged in
++ * byte 1: chemistry
++ * byte 2: voltage LSB
++ * byte 3: voltage MSB
++ * byte 4: flags
++ * byte 5-9: same for battery 2
++ */
++ mb->ac = msg_battery.rx_data[0];
++ mb->chemistry = msg_battery.rx_data[1];
++ mb->voltage = ((((unsigned short)msg_battery.rx_data[3] << 8) +
++ msg_battery.rx_data[2]) * 5000L) * 1000 / 1024;
++ mb->flag = msg_battery.rx_data[4];
++
++ if (msg_battery.rx_len == 9)
++ pr_debug("second battery ignored\n");
++
++ /* Then read the sensor */
++ ipaq_micro_tx_msg_sync(mb->micro, &msg_sensor);
++ mb->temperature = msg_sensor.rx_data[1] << 8 | msg_sensor.rx_data[0];
++
++ queue_delayed_work(mb->wq, &mb->update, msecs_to_jiffies(BATT_PERIOD));
++}
++
++static int get_capacity(struct power_supply *b)
++{
++ struct micro_battery *mb = dev_get_drvdata(b->dev->parent);
++
++ switch (mb->flag & 0x07) {
++ case MICRO_BATT_STATUS_HIGH:
++ return 100;
++ break;
++ case MICRO_BATT_STATUS_LOW:
++ return 50;
++ break;
++ case MICRO_BATT_STATUS_CRITICAL:
++ return 5;
++ break;
++ default:
++ break;
++ }
++ return 0;
++}
++
++static int get_status(struct power_supply *b)
++{
++ struct micro_battery *mb = dev_get_drvdata(b->dev->parent);
++
++ if (mb->flag == MICRO_BATT_STATUS_UNKNOWN)
++ return POWER_SUPPLY_STATUS_UNKNOWN;
++
++ if (mb->flag & MICRO_BATT_STATUS_FULL)
++ return POWER_SUPPLY_STATUS_FULL;
++
++ if ((mb->flag & MICRO_BATT_STATUS_CHARGING) ||
++ (mb->flag & MICRO_BATT_STATUS_CHARGEMAIN))
++ return POWER_SUPPLY_STATUS_CHARGING;
++
++ return POWER_SUPPLY_STATUS_DISCHARGING;
++}
++
++static int micro_batt_get_property(struct power_supply *b,
++ enum power_supply_property psp,
++ union power_supply_propval *val)
++{
++ struct micro_battery *mb = dev_get_drvdata(b->dev->parent);
++
++ switch (psp) {
++ case POWER_SUPPLY_PROP_TECHNOLOGY:
++ switch (mb->chemistry) {
++ case MICRO_BATT_CHEM_NICD:
++ val->intval = POWER_SUPPLY_TECHNOLOGY_NiCd;
++ break;
++ case MICRO_BATT_CHEM_NIMH:
++ val->intval = POWER_SUPPLY_TECHNOLOGY_NiMH;
++ break;
++ case MICRO_BATT_CHEM_LION:
++ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
++ break;
++ case MICRO_BATT_CHEM_LIPOLY:
++ val->intval = POWER_SUPPLY_TECHNOLOGY_LIPO;
++ break;
++ default:
++ val->intval = POWER_SUPPLY_TECHNOLOGY_UNKNOWN;
++ break;
++ };
++ break;
++ case POWER_SUPPLY_PROP_STATUS:
++ val->intval = get_status(b);
++ break;
++ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
++ val->intval = 4700000;
++ break;
++ case POWER_SUPPLY_PROP_CAPACITY:
++ val->intval = get_capacity(b);
++ break;
++ case POWER_SUPPLY_PROP_TEMP:
++ val->intval = mb->temperature;
++ break;
++ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
++ val->intval = mb->voltage;
++ break;
++ default:
++ return -EINVAL;
++ };
++
++ return 0;
++}
++
++static int micro_ac_get_property(struct power_supply *b,
++ enum power_supply_property psp,
++ union power_supply_propval *val)
++{
++ struct micro_battery *mb = dev_get_drvdata(b->dev->parent);
++
++ switch (psp) {
++ case POWER_SUPPLY_PROP_ONLINE:
++ val->intval = mb->ac;
++ break;
++ default:
++ return -EINVAL;
++ };
++
++ return 0;
++}
++
++static enum power_supply_property micro_batt_props[] = {
++ POWER_SUPPLY_PROP_TECHNOLOGY,
++ POWER_SUPPLY_PROP_STATUS,
++ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
++ POWER_SUPPLY_PROP_CAPACITY,
++ POWER_SUPPLY_PROP_TEMP,
++ POWER_SUPPLY_PROP_VOLTAGE_NOW,
++};
++
++static struct power_supply micro_battery = {
++ .name = "main-battery",
++ .type = POWER_SUPPLY_TYPE_BATTERY,
++ .properties = micro_batt_props,
++ .num_properties = ARRAY_SIZE(micro_batt_props),
++ .get_property = micro_batt_get_property,
++ .use_for_apm = 1,
++};
++
++static enum power_supply_property micro_ac_props[] = {
++ POWER_SUPPLY_PROP_ONLINE,
++};
++
++static struct power_supply micro_ac = {
++ .name = "ac",
++ .type = POWER_SUPPLY_TYPE_MAINS,
++ .properties = micro_ac_props,
++ .num_properties = ARRAY_SIZE(micro_ac_props),
++ .get_property = micro_ac_get_property,
++};
++
++static int micro_batt_probe(struct platform_device *pdev)
++{
++ struct micro_battery *mb;
++
++ mb = devm_kzalloc(&pdev->dev, sizeof(*mb), GFP_KERNEL);
++ if (!mb)
++ return -ENOMEM;
++
++ mb->micro = dev_get_drvdata(pdev->dev.parent);
++ mb->wq = create_singlethread_workqueue("ipaq-battery-wq");
++ INIT_DELAYED_WORK(&mb->update, micro_battery_work);
++ platform_set_drvdata(pdev, mb);
++ queue_delayed_work(mb->wq, &mb->update, 1);
++ power_supply_register(&pdev->dev, &micro_battery);
++ power_supply_register(&pdev->dev, &micro_ac);
++
++ dev_info(&pdev->dev, "iPAQ micro battery driver\n");
++ return 0;
++}
++
++static int micro_batt_remove(struct platform_device *pdev)
++
++{
++ struct micro_battery *mb = platform_get_drvdata(pdev);
++
++ power_supply_unregister(&micro_ac);
++ power_supply_unregister(&micro_battery);
++ cancel_delayed_work_sync(&mb->update);
++
++ return 0;
++}
++
++static int micro_batt_suspend(struct device *dev)
++{
++ struct micro_battery *mb = dev_get_drvdata(dev);
++
++ cancel_delayed_work_sync(&mb->update);
++ return 0;
++}
++
++static int micro_batt_resume(struct device *dev)
++{
++ struct micro_battery *mb = dev_get_drvdata(dev);
++
++ queue_delayed_work(mb->wq, &mb->update, msecs_to_jiffies(BATT_PERIOD));
++ return 0;
++}
++
++static const struct dev_pm_ops micro_batt_dev_pm_ops = {
++ SET_SYSTEM_SLEEP_PM_OPS(micro_batt_suspend, micro_batt_resume)
++};
++
++struct platform_driver micro_batt_device_driver = {
++ .driver = {
++ .name = "ipaq-micro-battery",
++ .pm = &micro_batt_dev_pm_ops,
++ },
++ .probe = micro_batt_probe,
++ .remove = micro_batt_remove,
++};
++module_platform_driver(micro_batt_device_driver);
++
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("driver for iPAQ Atmel micro battery");
++MODULE_ALIAS("platform:battery-ipaq-micro");
+--
+1.9.0
+