mirror of
https://github.com/adulau/aha.git
synced 2024-12-27 19:26:25 +00:00
collie: add battery driver
This driver is based on tosa_battery.c.
This commit is contained in:
Thomas Kunze
Thomas Kunze
parent
f7177c8452
commit
f1fce597e6
3 changed files with 426 additions and 0 deletions
|
|
@ -77,6 +77,13 @@ 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
|
||||
|
|
|
|||
|
|
@ -24,6 +24,7 @@ obj-$(CONFIG_BATTERY_DS2782) += ds2782_battery.o
|
|||
obj-$(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-$(CONFIG_BATTERY_BQ27x00) += bq27x00_battery.o
|
||||
obj-$(CONFIG_BATTERY_DA9030) += da9030_battery.o
|
||||
|
|
|
|||
418
drivers/power/collie_battery.c
Normal file
418
drivers/power/collie_battery.c
Normal file
|
|
@ -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");
|
||||
Loading…
Reference in a new issue