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power: remove tosa_battery driver

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The PXA tosa machine is removed, so this driver is no longer
in use.

Cc: linux-pm@vger.kernel.org
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2022-09-30 13:31:19 +02:00
parent 347651485a
commit a677fe9796
3 changed files with 0 additions and 520 deletions
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7
drivers/power/supply/Kconfig
View File

@ -195,13 +195,6 @@ config BATTERY_SAMSUNG_SDI
Say Y to enable support for Samsung SDI battery data.
These batteries are used in Samsung mobile phones.
config BATTERY_TOSA
tristate "Sharp SL-6000 (tosa) battery"
depends on MACH_TOSA && MFD_TC6393XB && TOUCHSCREEN_WM97XX
help
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

1
drivers/power/supply/Makefile
View File

@ -36,7 +36,6 @@ obj-$(CONFIG_BATTERY_LEGO_EV3) += lego_ev3_battery.o
obj-$(CONFIG_BATTERY_PMU) += pmu_battery.o
obj-$(CONFIG_BATTERY_OLPC) += olpc_battery.o
obj-$(CONFIG_BATTERY_SAMSUNG_SDI) += samsung-sdi-battery.o
obj-$(CONFIG_BATTERY_TOSA) += tosa_battery.o
obj-$(CONFIG_BATTERY_COLLIE) += collie_battery.o
obj-$(CONFIG_BATTERY_INGENIC) += ingenic-battery.o
obj-$(CONFIG_BATTERY_IPAQ_MICRO) += ipaq_micro_battery.o

512
drivers/power/supply/tosa_battery.c
View File

@ -1,512 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Battery and Power Management code for the Sharp SL-6000x
*
* Copyright (c) 2005 Dirk Opfer
* Copyright (c) 2008 Dmitry Baryshkov
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/power_supply.h>
#include <linux/wm97xx.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/gpio/consumer.h>
#include <asm/mach-types.h>
static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
static struct work_struct bat_work;
struct tosa_bat {
int status;
struct power_supply *psy;
int full_chrg;
struct mutex work_lock; /* protects data */
bool (*is_present)(struct tosa_bat *bat);
struct gpio_desc *gpiod_full;
struct gpio_desc *gpiod_charge_off;
int technology;
struct gpio_desc *gpiod_bat;
int adc_bat;
int adc_bat_divider;
int bat_max;
int bat_min;
struct gpio_desc *gpiod_temp;
int adc_temp;
int adc_temp_divider;
};
static struct gpio_desc *jacket_detect;
static struct tosa_bat tosa_bat_main;
static struct tosa_bat tosa_bat_jacket;
static unsigned long tosa_read_bat(struct tosa_bat *bat)
{
unsigned long value = 0;
if (!bat->gpiod_bat || bat->adc_bat < 0)
return 0;
mutex_lock(&bat_lock);
gpiod_set_value(bat->gpiod_bat, 1);
msleep(5);
value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy->dev.parent),
bat->adc_bat);
gpiod_set_value(bat->gpiod_bat, 0);
mutex_unlock(&bat_lock);
value = value * 1000000 / bat->adc_bat_divider;
return value;
}
static unsigned long tosa_read_temp(struct tosa_bat *bat)
{
unsigned long value = 0;
if (!bat->gpiod_temp || bat->adc_temp < 0)
return 0;
mutex_lock(&bat_lock);
gpiod_set_value(bat->gpiod_temp, 1);
msleep(5);
value = wm97xx_read_aux_adc(dev_get_drvdata(bat->psy->dev.parent),
bat->adc_temp);
gpiod_set_value(bat->gpiod_temp, 0);
mutex_unlock(&bat_lock);
value = value * 10000 / bat->adc_temp_divider;
return value;
}
static int tosa_bat_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
int ret = 0;
struct tosa_bat *bat = power_supply_get_drvdata(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 = tosa_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 = tosa_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 bool tosa_jacket_bat_is_present(struct tosa_bat *bat)
{
return gpiod_get_value(jacket_detect) == 0;
}
static void tosa_bat_external_power_changed(struct power_supply *psy)
{
schedule_work(&bat_work);
}
static irqreturn_t tosa_bat_gpio_isr(int irq, void *data)
{
pr_info("tosa_bat_gpio irq\n");
schedule_work(&bat_work);
return IRQ_HANDLED;
}
static void tosa_bat_update(struct tosa_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->desc->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) {
gpiod_set_value(bat->gpiod_charge_off, 0);
mdelay(15);
}
if (gpiod_get_value(bat->gpiod_full)) {
if (old == POWER_SUPPLY_STATUS_CHARGING ||
bat->full_chrg == -1)
bat->full_chrg = tosa_read_bat(bat);
gpiod_set_value(bat->gpiod_charge_off, 1);
bat->status = POWER_SUPPLY_STATUS_FULL;
} else {
gpiod_set_value(bat->gpiod_charge_off, 0);
bat->status = POWER_SUPPLY_STATUS_CHARGING;
}
} else {
gpiod_set_value(bat->gpiod_charge_off, 1);
bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
}
if (old != bat->status)
power_supply_changed(psy);
mutex_unlock(&bat->work_lock);
}
static void tosa_bat_work(struct work_struct *work)
{
tosa_bat_update(&tosa_bat_main);
tosa_bat_update(&tosa_bat_jacket);
}
static enum power_supply_property tosa_bat_main_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_MAX,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_PRESENT,
};
static enum power_supply_property tosa_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_PRESENT,
};
static const struct power_supply_desc tosa_bat_main_desc = {
.name = "main-battery",
.type = POWER_SUPPLY_TYPE_BATTERY,
.properties = tosa_bat_main_props,
.num_properties = ARRAY_SIZE(tosa_bat_main_props),
.get_property = tosa_bat_get_property,
.external_power_changed = tosa_bat_external_power_changed,
.use_for_apm = 1,
};
static const struct power_supply_desc tosa_bat_jacket_desc = {
.name = "jacket-battery",
.type = POWER_SUPPLY_TYPE_BATTERY,
.properties = tosa_bat_main_props,
.num_properties = ARRAY_SIZE(tosa_bat_main_props),
.get_property = tosa_bat_get_property,
.external_power_changed = tosa_bat_external_power_changed,
};
static const struct power_supply_desc tosa_bat_bu_desc = {
.name = "backup-battery",
.type = POWER_SUPPLY_TYPE_BATTERY,
.properties = tosa_bat_bu_props,
.num_properties = ARRAY_SIZE(tosa_bat_bu_props),
.get_property = tosa_bat_get_property,
.external_power_changed = tosa_bat_external_power_changed,
};
static struct tosa_bat tosa_bat_main = {
.status = POWER_SUPPLY_STATUS_DISCHARGING,
.full_chrg = -1,
.psy = NULL,
.gpiod_full = NULL,
.gpiod_charge_off = NULL,
.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
.gpiod_bat = NULL,
.adc_bat = WM97XX_AUX_ID3,
.adc_bat_divider = 414,
.bat_max = 4310000,
.bat_min = 1551 * 1000000 / 414,
.gpiod_temp = NULL,
.adc_temp = WM97XX_AUX_ID2,
.adc_temp_divider = 10000,
};
static struct tosa_bat tosa_bat_jacket = {
.status = POWER_SUPPLY_STATUS_DISCHARGING,
.full_chrg = -1,
.psy = NULL,
.is_present = tosa_jacket_bat_is_present,
.gpiod_full = NULL,
.gpiod_charge_off = NULL,
.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
.gpiod_bat = NULL,
.adc_bat = WM97XX_AUX_ID3,
.adc_bat_divider = 414,
.bat_max = 4310000,
.bat_min = 1551 * 1000000 / 414,
.gpiod_temp = NULL,
.adc_temp = WM97XX_AUX_ID2,
.adc_temp_divider = 10000,
};
static struct tosa_bat tosa_bat_bu = {
.status = POWER_SUPPLY_STATUS_UNKNOWN,
.full_chrg = -1,
.psy = NULL,
.gpiod_full = NULL,
.gpiod_charge_off = NULL,
.technology = POWER_SUPPLY_TECHNOLOGY_LiMn,
.gpiod_bat = NULL,
.adc_bat = WM97XX_AUX_ID4,
.adc_bat_divider = 1266,
.gpiod_temp = NULL,
.adc_temp = -1,
.adc_temp_divider = -1,
};
#ifdef CONFIG_PM
static int tosa_bat_suspend(struct platform_device *dev, pm_message_t state)
{
/* flush all pending status updates */
flush_work(&bat_work);
return 0;
}
static int tosa_bat_resume(struct platform_device *dev)
{
/* things may have changed while we were away */
schedule_work(&bat_work);
return 0;
}
#else
#define tosa_bat_suspend NULL
#define tosa_bat_resume NULL
#endif
static int tosa_bat_probe(struct platform_device *pdev)
{
int ret;
struct power_supply_config main_psy_cfg = {},
jacket_psy_cfg = {},
bu_psy_cfg = {};
struct device *dev = &pdev->dev;
struct gpio_desc *dummy;
if (!machine_is_tosa())
return -ENODEV;
/* Main charging control GPIOs */
tosa_bat_main.gpiod_charge_off = devm_gpiod_get(dev, "main charge off", GPIOD_OUT_HIGH);
if (IS_ERR(tosa_bat_main.gpiod_charge_off))
return dev_err_probe(dev, PTR_ERR(tosa_bat_main.gpiod_charge_off),
"no main charger GPIO\n");
tosa_bat_jacket.gpiod_charge_off = devm_gpiod_get(dev, "jacket charge off", GPIOD_OUT_HIGH);
if (IS_ERR(tosa_bat_jacket.gpiod_charge_off))
return dev_err_probe(dev, PTR_ERR(tosa_bat_jacket.gpiod_charge_off),
"no jacket charger GPIO\n");
/* Per-battery output check (routes battery voltage to ADC) */
tosa_bat_main.gpiod_bat = devm_gpiod_get(dev, "main battery", GPIOD_OUT_LOW);
if (IS_ERR(tosa_bat_main.gpiod_bat))
return dev_err_probe(dev, PTR_ERR(tosa_bat_main.gpiod_bat),
"no main battery GPIO\n");
tosa_bat_jacket.gpiod_bat = devm_gpiod_get(dev, "jacket battery", GPIOD_OUT_LOW);
if (IS_ERR(tosa_bat_jacket.gpiod_bat))
return dev_err_probe(dev, PTR_ERR(tosa_bat_jacket.gpiod_bat),
"no jacket battery GPIO\n");
tosa_bat_bu.gpiod_bat = devm_gpiod_get(dev, "backup battery", GPIOD_OUT_LOW);
if (IS_ERR(tosa_bat_bu.gpiod_bat))
return dev_err_probe(dev, PTR_ERR(tosa_bat_bu.gpiod_bat),
"no backup battery GPIO\n");
/* Battery full detect GPIOs (using PXA SoC GPIOs) */
tosa_bat_main.gpiod_full = devm_gpiod_get(dev, "main battery full", GPIOD_IN);
if (IS_ERR(tosa_bat_main.gpiod_full))
return dev_err_probe(dev, PTR_ERR(tosa_bat_main.gpiod_full),
"no main battery full GPIO\n");
tosa_bat_jacket.gpiod_full = devm_gpiod_get(dev, "jacket battery full", GPIOD_IN);
if (IS_ERR(tosa_bat_jacket.gpiod_full))
return dev_err_probe(dev, PTR_ERR(tosa_bat_jacket.gpiod_full),
"no jacket battery full GPIO\n");
/* Battery temperature GPIOs (routes thermistor voltage to ADC) */
tosa_bat_main.gpiod_temp = devm_gpiod_get(dev, "main battery temp", GPIOD_OUT_LOW);
if (IS_ERR(tosa_bat_main.gpiod_temp))
return dev_err_probe(dev, PTR_ERR(tosa_bat_main.gpiod_temp),
"no main battery temp GPIO\n");
tosa_bat_jacket.gpiod_temp = devm_gpiod_get(dev, "jacket battery temp", GPIOD_OUT_LOW);
if (IS_ERR(tosa_bat_jacket.gpiod_temp))
return dev_err_probe(dev, PTR_ERR(tosa_bat_jacket.gpiod_temp),
"no jacket battery temp GPIO\n");
/* Jacket detect GPIO */
jacket_detect = devm_gpiod_get(dev, "jacket detect", GPIOD_IN);
if (IS_ERR(jacket_detect))
return dev_err_probe(dev, PTR_ERR(jacket_detect),
"no jacket detect GPIO\n");
/* Battery low indication GPIOs (not used, we just request them) */
dummy = devm_gpiod_get(dev, "main battery low", GPIOD_IN);
if (IS_ERR(dummy))
return dev_err_probe(dev, PTR_ERR(dummy),
"no main battery low GPIO\n");
dummy = devm_gpiod_get(dev, "jacket battery low", GPIOD_IN);
if (IS_ERR(dummy))
return dev_err_probe(dev, PTR_ERR(dummy),
"no jacket battery low GPIO\n");
/* Battery switch GPIO (not used just requested) */
dummy = devm_gpiod_get(dev, "battery switch", GPIOD_OUT_LOW);
if (IS_ERR(dummy))
return dev_err_probe(dev, PTR_ERR(dummy),
"no battery switch GPIO\n");
mutex_init(&tosa_bat_main.work_lock);
mutex_init(&tosa_bat_jacket.work_lock);
INIT_WORK(&bat_work, tosa_bat_work);
main_psy_cfg.drv_data = &tosa_bat_main;
tosa_bat_main.psy = power_supply_register(dev,
&tosa_bat_main_desc,
&main_psy_cfg);
if (IS_ERR(tosa_bat_main.psy)) {
ret = PTR_ERR(tosa_bat_main.psy);
goto err_psy_reg_main;
}
jacket_psy_cfg.drv_data = &tosa_bat_jacket;
tosa_bat_jacket.psy = power_supply_register(dev,
&tosa_bat_jacket_desc,
&jacket_psy_cfg);
if (IS_ERR(tosa_bat_jacket.psy)) {
ret = PTR_ERR(tosa_bat_jacket.psy);
goto err_psy_reg_jacket;
}
bu_psy_cfg.drv_data = &tosa_bat_bu;
tosa_bat_bu.psy = power_supply_register(dev, &tosa_bat_bu_desc,
&bu_psy_cfg);
if (IS_ERR(tosa_bat_bu.psy)) {
ret = PTR_ERR(tosa_bat_bu.psy);
goto err_psy_reg_bu;
}
ret = request_irq(gpiod_to_irq(tosa_bat_main.gpiod_full),
tosa_bat_gpio_isr,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"main full", &tosa_bat_main);
if (ret)
goto err_req_main;
ret = request_irq(gpiod_to_irq(tosa_bat_jacket.gpiod_full),
tosa_bat_gpio_isr,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"jacket full", &tosa_bat_jacket);
if (ret)
goto err_req_jacket;
ret = request_irq(gpiod_to_irq(jacket_detect),
tosa_bat_gpio_isr,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"jacket detect", &tosa_bat_jacket);
if (!ret) {
schedule_work(&bat_work);
return 0;
}
free_irq(gpiod_to_irq(tosa_bat_jacket.gpiod_full), &tosa_bat_jacket);
err_req_jacket:
free_irq(gpiod_to_irq(tosa_bat_main.gpiod_full), &tosa_bat_main);
err_req_main:
power_supply_unregister(tosa_bat_bu.psy);
err_psy_reg_bu:
power_supply_unregister(tosa_bat_jacket.psy);
err_psy_reg_jacket:
power_supply_unregister(tosa_bat_main.psy);
err_psy_reg_main:
/* see comment in tosa_bat_remove */
cancel_work_sync(&bat_work);
return ret;
}
static int tosa_bat_remove(struct platform_device *dev)
{
free_irq(gpiod_to_irq(jacket_detect), &tosa_bat_jacket);
free_irq(gpiod_to_irq(tosa_bat_jacket.gpiod_full), &tosa_bat_jacket);
free_irq(gpiod_to_irq(tosa_bat_main.gpiod_full), &tosa_bat_main);
power_supply_unregister(tosa_bat_bu.psy);
power_supply_unregister(tosa_bat_jacket.psy);
power_supply_unregister(tosa_bat_main.psy);
/*
* Now cancel the bat_work. We won't get any more schedules,
* since all sources (isr and external_power_changed) are
* unregistered now.
*/
cancel_work_sync(&bat_work);
return 0;
}
static struct platform_driver tosa_bat_driver = {
.driver.name = "wm97xx-battery",
.driver.owner = THIS_MODULE,
.probe = tosa_bat_probe,
.remove = tosa_bat_remove,
.suspend = tosa_bat_suspend,
.resume = tosa_bat_resume,
};
module_platform_driver(tosa_bat_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Dmitry Baryshkov");
MODULE_DESCRIPTION("Tosa battery driver");
MODULE_ALIAS("platform:wm97xx-battery");