power: remove tosa_battery driver

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>

3 files changed, 0 insertions, 520 deletions

diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
index b7fdcfd5d4e7..3c37f3a6431c 100644
--- a/drivers/power/supply/Kconfig
+++ b/drivers/power/supply/Kconfig
@@ -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
diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
index 38737ea9b9d5..55c1aae91d1d 100644
--- a/drivers/power/supply/Makefile
+++ b/drivers/power/supply/Makefile
@@ -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
diff --git a/drivers/power/supply/tosa_battery.c b/drivers/power/supply/tosa_battery.c
deleted file mode 100644
index 73d4aca4c386..000000000000
--- a/drivers/power/supply/tosa_battery.c
+++ /dev/null
@@ -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");