diff options
Diffstat (limited to 'recipes-kernel/linux/linux-yocto-3.14/h3600/0007-power-add-driver-for-battery-reading-on-iPaq-h3xxx.patch')
-rw-r--r-- | recipes-kernel/linux/linux-yocto-3.14/h3600/0007-power-add-driver-for-battery-reading-on-iPaq-h3xxx.patch | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-yocto-3.14/h3600/0007-power-add-driver-for-battery-reading-on-iPaq-h3xxx.patch b/recipes-kernel/linux/linux-yocto-3.14/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-3.14/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, µ_battery); ++ power_supply_register(&pdev->dev, µ_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(µ_ac); ++ power_supply_unregister(µ_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 = µ_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 + |