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-rw-r--r--recipes/linux/linux-2.6.28/collie/0018-collie-add-battery-driver.patch473
1 files changed, 473 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.28/collie/0018-collie-add-battery-driver.patch b/recipes/linux/linux-2.6.28/collie/0018-collie-add-battery-driver.patch
new file mode 100644
index 0000000000..b28db63d87
--- /dev/null
+++ b/recipes/linux/linux-2.6.28/collie/0018-collie-add-battery-driver.patch
@@ -0,0 +1,473 @@
+From a2cf77eaf64b201a00b9682c25596ef0bcda8dc4 Mon Sep 17 00:00:00 2001
+From: Thomas Kunze <thommycheck@gmx.de>
+Date: Tue, 10 Feb 2009 18:16:03 +0100
+Subject: [PATCH 18/23] collie: add battery driver
+
+This driver is based on tosa_battery.c.
+
+Conflicts:
+
+ drivers/power/Makefile
+---
+ drivers/power/Kconfig | 7 +
+ drivers/power/Makefile | 1 +
+ drivers/power/collie_battery.c | 418 ++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 426 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/power/collie_battery.c
+
+diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
+index 8e0c2b4..a945046 100644
+--- a/drivers/power/Kconfig
++++ b/drivers/power/Kconfig
+@@ -56,6 +56,13 @@ config BATTERY_TOSA
+ Say Y to enable support for the battery on the Sharp Zaurus
+ SL-6000 (tosa) models.
+
++config BATTERY_COLLIE
++ tristate "Sharp SL-5500 (collie) battery"
++ depends on SA1100_COLLIE && MCP_UCB1200
++ help
++ Say Y to enable support for the battery on the Sharp Zaurus
++ SL-5500 (collie) models.
++
+ config BATTERY_WM97XX
+ bool "WM97xx generic battery driver"
+ depends on TOUCHSCREEN_WM97XX=y
+diff --git a/drivers/power/Makefile b/drivers/power/Makefile
+index e8f1ece..51a7263 100644
+--- a/drivers/power/Makefile
++++ b/drivers/power/Makefile
+@@ -21,5 +21,6 @@ obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
+ obj-$(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_WM97XX) += wm97xx_battery.o
+ obj-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
+diff --git a/drivers/power/collie_battery.c b/drivers/power/collie_battery.c
+new file mode 100644
+index 0000000..039f41a
+--- /dev/null
++++ b/drivers/power/collie_battery.c
+@@ -0,0 +1,418 @@
++/*
++ * Battery and Power Management code for the Sharp SL-5x00
++ *
++ * Copyright (C) 2009 Thomas Kunze
++ *
++ * based on tosa_battery.c
++ *
++ * 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.
++ *
++ */
++#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 <linux/mfd/ucb1x00.h>
++
++#include <asm/mach/sharpsl_param.h>
++#include <asm/mach-types.h>
++#include <mach/collie.h>
++
++static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
++static struct work_struct bat_work;
++static struct ucb1x00 *ucb;
++
++struct collie_bat {
++ int status;
++ struct power_supply psy;
++ int full_chrg;
++
++ struct mutex work_lock; /* protects data */
++
++ bool (*is_present)(struct collie_bat *bat);
++ int gpio_full;
++ int gpio_charge_on;
++
++ int technology;
++
++ int gpio_bat;
++ int adc_bat;
++ int adc_bat_divider;
++ int bat_max;
++ int bat_min;
++
++ int gpio_temp;
++ int adc_temp;
++ int adc_temp_divider;
++};
++
++static struct collie_bat collie_bat_main;
++
++static unsigned long collie_read_bat(struct collie_bat *bat)
++{
++ unsigned long value = 0;
++
++ if (bat->gpio_bat < 0 || bat->adc_bat < 0)
++ return 0;
++ mutex_lock(&bat_lock);
++ gpio_set_value(bat->gpio_bat, 1);
++ msleep(5);
++ ucb1x00_adc_enable(ucb);
++ value = ucb1x00_adc_read(ucb, bat->adc_bat, UCB_SYNC);
++ ucb1x00_adc_disable(ucb);
++ gpio_set_value(bat->gpio_bat, 0);
++ mutex_unlock(&bat_lock);
++ value = value * 1000000 / bat->adc_bat_divider;
++
++ return value;
++}
++
++static unsigned long collie_read_temp(struct collie_bat *bat)
++{
++ unsigned long value = 0;
++ if (bat->gpio_temp < 0 || bat->adc_temp < 0)
++ return 0;
++
++ mutex_lock(&bat_lock);
++ gpio_set_value(bat->gpio_temp, 1);
++ msleep(5);
++ ucb1x00_adc_enable(ucb);
++ value = ucb1x00_adc_read(ucb, bat->adc_temp, UCB_SYNC);
++ ucb1x00_adc_disable(ucb);
++ gpio_set_value(bat->gpio_temp, 0);
++ mutex_unlock(&bat_lock);
++
++ value = value * 10000 / bat->adc_temp_divider;
++
++ return value;
++}
++
++static int collie_bat_get_property(struct power_supply *psy,
++ enum power_supply_property psp,
++ union power_supply_propval *val)
++{
++ int ret = 0;
++ struct collie_bat *bat = container_of(psy, struct collie_bat, psy);
++
++ if (bat->is_present && !bat->is_present(bat)
++ && psp != POWER_SUPPLY_PROP_PRESENT) {
++ return -ENODEV;
++ }
++
++ switch (psp) {
++ case POWER_SUPPLY_PROP_STATUS:
++ val->intval = bat->status;
++ break;
++ case POWER_SUPPLY_PROP_TECHNOLOGY:
++ val->intval = bat->technology;
++ break;
++ case POWER_SUPPLY_PROP_VOLTAGE_NOW:
++ val->intval = collie_read_bat(bat);
++ break;
++ case POWER_SUPPLY_PROP_VOLTAGE_MAX:
++ if (bat->full_chrg == -1)
++ val->intval = bat->bat_max;
++ else
++ val->intval = bat->full_chrg;
++ break;
++ case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
++ val->intval = bat->bat_max;
++ break;
++ case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
++ val->intval = bat->bat_min;
++ break;
++ case POWER_SUPPLY_PROP_TEMP:
++ val->intval = collie_read_temp(bat);
++ break;
++ case POWER_SUPPLY_PROP_PRESENT:
++ val->intval = bat->is_present ? bat->is_present(bat) : 1;
++ break;
++ default:
++ ret = -EINVAL;
++ break;
++ }
++ return ret;
++}
++
++static void collie_bat_external_power_changed(struct power_supply *psy)
++{
++ schedule_work(&bat_work);
++}
++
++static irqreturn_t collie_bat_gpio_isr(int irq, void *data)
++{
++ pr_info("collie_bat_gpio irq: %d\n", gpio_get_value(irq_to_gpio(irq)));
++ schedule_work(&bat_work);
++ return IRQ_HANDLED;
++}
++
++static void collie_bat_update(struct collie_bat *bat)
++{
++ int old;
++ struct power_supply *psy = &bat->psy;
++
++ mutex_lock(&bat->work_lock);
++
++ old = bat->status;
++
++ if (bat->is_present && !bat->is_present(bat)) {
++ printk(KERN_NOTICE "%s not present\n", psy->name);
++ bat->status = POWER_SUPPLY_STATUS_UNKNOWN;
++ bat->full_chrg = -1;
++ } else if (power_supply_am_i_supplied(psy)) {
++ if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) {
++ gpio_set_value(bat->gpio_charge_on, 1);
++ mdelay(15);
++ }
++
++ if (gpio_get_value(bat->gpio_full)) {
++ if (old == POWER_SUPPLY_STATUS_CHARGING ||
++ bat->full_chrg == -1)
++ bat->full_chrg = collie_read_bat(bat);
++
++ gpio_set_value(bat->gpio_charge_on, 0);
++ bat->status = POWER_SUPPLY_STATUS_FULL;
++ } else {
++ gpio_set_value(bat->gpio_charge_on, 1);
++ bat->status = POWER_SUPPLY_STATUS_CHARGING;
++ }
++ } else {
++ gpio_set_value(bat->gpio_charge_on, 0);
++ bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
++ }
++
++ if (old != bat->status)
++ power_supply_changed(psy);
++
++ mutex_unlock(&bat->work_lock);
++}
++
++static void collie_bat_work(struct work_struct *work)
++{
++ collie_bat_update(&collie_bat_main);
++}
++
++
++static enum power_supply_property collie_bat_main_props[] = {
++ POWER_SUPPLY_PROP_STATUS,
++ POWER_SUPPLY_PROP_TECHNOLOGY,
++ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
++ POWER_SUPPLY_PROP_VOLTAGE_NOW,
++ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
++ POWER_SUPPLY_PROP_VOLTAGE_MAX,
++ POWER_SUPPLY_PROP_PRESENT,
++ POWER_SUPPLY_PROP_TEMP,
++};
++
++static enum power_supply_property collie_bat_bu_props[] = {
++ POWER_SUPPLY_PROP_STATUS,
++ POWER_SUPPLY_PROP_TECHNOLOGY,
++ POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
++ POWER_SUPPLY_PROP_VOLTAGE_NOW,
++ POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
++ POWER_SUPPLY_PROP_VOLTAGE_MAX,
++ POWER_SUPPLY_PROP_PRESENT,
++};
++
++static struct collie_bat collie_bat_main = {
++ .status = POWER_SUPPLY_STATUS_DISCHARGING,
++ .full_chrg = -1,
++ .psy = {
++ .name = "main-battery",
++ .type = POWER_SUPPLY_TYPE_BATTERY,
++ .properties = collie_bat_main_props,
++ .num_properties = ARRAY_SIZE(collie_bat_main_props),
++ .get_property = collie_bat_get_property,
++ .external_power_changed = collie_bat_external_power_changed,
++ .use_for_apm = 1,
++ },
++
++ .gpio_full = COLLIE_GPIO_CO,
++ .gpio_charge_on = COLLIE_GPIO_CHARGE_ON,
++
++ .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
++
++ .gpio_bat = COLLIE_GPIO_MBAT_ON,
++ .adc_bat = UCB_ADC_INP_AD1,
++ .adc_bat_divider = 155,
++ .bat_max = 4310000,
++ .bat_min = 1551 * 1000000 / 414,
++
++ .gpio_temp = COLLIE_GPIO_TMP_ON,
++ .adc_temp = UCB_ADC_INP_AD0,
++ .adc_temp_divider = 10000,
++};
++
++static struct collie_bat collie_bat_bu = {
++ .status = POWER_SUPPLY_STATUS_UNKNOWN,
++ .full_chrg = -1,
++
++ .psy = {
++ .name = "backup-battery",
++ .type = POWER_SUPPLY_TYPE_BATTERY,
++ .properties = collie_bat_bu_props,
++ .num_properties = ARRAY_SIZE(collie_bat_bu_props),
++ .get_property = collie_bat_get_property,
++ .external_power_changed = collie_bat_external_power_changed,
++ },
++
++ .gpio_full = -1,
++ .gpio_charge_on = -1,
++
++ .technology = POWER_SUPPLY_TECHNOLOGY_LiMn,
++
++ .gpio_bat = COLLIE_GPIO_BBAT_ON,
++ .adc_bat = UCB_ADC_INP_AD1,
++ .adc_bat_divider = 155,
++ .bat_max = 3000000,
++ .bat_min = 1900000,
++
++ .gpio_temp = -1,
++ .adc_temp = -1,
++ .adc_temp_divider = -1,
++};
++
++static struct {
++ int gpio;
++ char *name;
++ bool output;
++ int value;
++} gpios[] = {
++ { COLLIE_GPIO_CO, "main battery full", 0, 0 },
++ { COLLIE_GPIO_MAIN_BAT_LOW, "main battery low", 0, 0 },
++ { COLLIE_GPIO_CHARGE_ON, "main charge on", 1, 0 },
++ { COLLIE_GPIO_MBAT_ON, "main battery", 1, 0 },
++ { COLLIE_GPIO_TMP_ON, "main battery temp", 1, 0 },
++ { COLLIE_GPIO_BBAT_ON, "backup battery", 1, 0 },
++};
++
++#ifdef CONFIG_PM
++static int collie_bat_suspend(struct ucb1x00_dev *dev, pm_message_t state)
++{
++ /* flush all pending status updates */
++ flush_scheduled_work();
++ return 0;
++}
++
++static int collie_bat_resume(struct ucb1x00_dev *dev)
++{
++ /* things may have changed while we were away */
++ schedule_work(&bat_work);
++ return 0;
++}
++#else
++#define collie_bat_suspend NULL
++#define collie_bat_resume NULL
++#endif
++
++static int __devinit collie_bat_probe(struct ucb1x00_dev *dev)
++{
++ int ret;
++ int i;
++
++ if (!machine_is_collie())
++ return -ENODEV;
++
++ ucb = dev->ucb;
++
++ for (i = 0; i < ARRAY_SIZE(gpios); i++) {
++ ret = gpio_request(gpios[i].gpio, gpios[i].name);
++ if (ret) {
++ i--;
++ goto err_gpio;
++ }
++
++ if (gpios[i].output)
++ ret = gpio_direction_output(gpios[i].gpio,
++ gpios[i].value);
++ else
++ ret = gpio_direction_input(gpios[i].gpio);
++
++ if (ret)
++ goto err_gpio;
++ }
++
++ mutex_init(&collie_bat_main.work_lock);
++
++ INIT_WORK(&bat_work, collie_bat_work);
++
++ ret = power_supply_register(&dev->ucb->dev, &collie_bat_main.psy);
++ if (ret)
++ goto err_psy_reg_main;
++ ret = power_supply_register(&dev->ucb->dev, &collie_bat_bu.psy);
++ if (ret)
++ goto err_psy_reg_bu;
++
++ ret = request_irq(gpio_to_irq(COLLIE_GPIO_CO),
++ collie_bat_gpio_isr,
++ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
++ "main full", &collie_bat_main);
++ if (!ret) {
++ schedule_work(&bat_work);
++ return 0;
++ }
++ power_supply_unregister(&collie_bat_bu.psy);
++err_psy_reg_bu:
++ power_supply_unregister(&collie_bat_main.psy);
++err_psy_reg_main:
++
++ /* see comment in collie_bat_remove */
++ flush_scheduled_work();
++
++ i--;
++err_gpio:
++ for (; i >= 0; i--)
++ gpio_free(gpios[i].gpio);
++
++ return ret;
++}
++
++static void __devexit collie_bat_remove(struct ucb1x00_dev *dev)
++{
++ int i;
++
++ free_irq(gpio_to_irq(COLLIE_GPIO_CO), &collie_bat_main);
++
++ power_supply_unregister(&collie_bat_bu.psy);
++ power_supply_unregister(&collie_bat_main.psy);
++
++ /*
++ * now flush all pending work.
++ * we won't get any more schedules, since all
++ * sources (isr and external_power_changed)
++ * are unregistered now.
++ */
++ flush_scheduled_work();
++
++ for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i--)
++ gpio_free(gpios[i].gpio);
++}
++
++static struct ucb1x00_driver collie_bat_driver = {
++ .add = collie_bat_probe,
++ .remove = __devexit_p(collie_bat_remove),
++ .suspend = collie_bat_suspend,
++ .resume = collie_bat_resume,
++};
++
++static int __init collie_bat_init(void)
++{
++ return ucb1x00_register_driver(&collie_bat_driver);
++}
++
++static void __exit collie_bat_exit(void)
++{
++ ucb1x00_unregister_driver(&collie_bat_driver);
++}
++
++module_init(collie_bat_init);
++module_exit(collie_bat_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Thomas Kunze");
++MODULE_DESCRIPTION("Collie battery driver");
+--
+1.5.6.5
+
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-06-13 00:18:28 +0000