power: move power supply drivers to power/supply

This moves all power supply drivers from drivers/power/
to drivers/power/supply/. The intention is a cleaner
source tree, since drivers/power/ also contains frameworks
unrelated to power supply, like adaptive voltage scaling.

Signed-off-by: Sebastian Reichel <sre@kernel.org>

1 files changed, 0 insertions, 631 deletions

diff --git a/drivers/power/lp8727_charger.c b/drivers/power/lp8727_charger.c
deleted file mode 100644
index 042fb3dacb46..000000000000
--- a/drivers/power/lp8727_charger.c
+++ /dev/null
@@ -1,631 +0,0 @@
-/*
- * Driver for LP8727 Micro/Mini USB IC with integrated charger
- *
- *			Copyright (C) 2011 Texas Instruments
- *			Copyright (C) 2011 National Semiconductor
- *
- * 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/module.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/power_supply.h>
-#include <linux/platform_data/lp8727.h>
-#include <linux/of.h>
-
-#define LP8788_NUM_INTREGS	2
-#define DEFAULT_DEBOUNCE_MSEC	270
-
-/* Registers */
-#define LP8727_CTRL1		0x1
-#define LP8727_CTRL2		0x2
-#define LP8727_SWCTRL		0x3
-#define LP8727_INT1		0x4
-#define LP8727_INT2		0x5
-#define LP8727_STATUS1		0x6
-#define LP8727_STATUS2		0x7
-#define LP8727_CHGCTRL2		0x9
-
-/* CTRL1 register */
-#define LP8727_CP_EN		BIT(0)
-#define LP8727_ADC_EN		BIT(1)
-#define LP8727_ID200_EN		BIT(4)
-
-/* CTRL2 register */
-#define LP8727_CHGDET_EN	BIT(1)
-#define LP8727_INT_EN		BIT(6)
-
-/* SWCTRL register */
-#define LP8727_SW_DM1_DM	(0x0 << 0)
-#define LP8727_SW_DM1_HiZ	(0x7 << 0)
-#define LP8727_SW_DP2_DP	(0x0 << 3)
-#define LP8727_SW_DP2_HiZ	(0x7 << 3)
-
-/* INT1 register */
-#define LP8727_IDNO		(0xF << 0)
-#define LP8727_VBUS		BIT(4)
-
-/* STATUS1 register */
-#define LP8727_CHGSTAT		(3 << 4)
-#define LP8727_CHPORT		BIT(6)
-#define LP8727_DCPORT		BIT(7)
-#define LP8727_STAT_EOC		0x30
-
-/* STATUS2 register */
-#define LP8727_TEMP_STAT	(3 << 5)
-#define LP8727_TEMP_SHIFT	5
-
-/* CHGCTRL2 register */
-#define LP8727_ICHG_SHIFT	4
-
-enum lp8727_dev_id {
-	LP8727_ID_NONE,
-	LP8727_ID_TA,
-	LP8727_ID_DEDICATED_CHG,
-	LP8727_ID_USB_CHG,
-	LP8727_ID_USB_DS,
-	LP8727_ID_MAX,
-};
-
-enum lp8727_die_temp {
-	LP8788_TEMP_75C,
-	LP8788_TEMP_95C,
-	LP8788_TEMP_115C,
-	LP8788_TEMP_135C,
-};
-
-struct lp8727_psy {
-	struct power_supply *ac;
-	struct power_supply *usb;
-	struct power_supply *batt;
-};
-
-struct lp8727_chg {
-	struct device *dev;
-	struct i2c_client *client;
-	struct mutex xfer_lock;
-	struct lp8727_psy *psy;
-	struct lp8727_platform_data *pdata;
-
-	/* Charger Data */
-	enum lp8727_dev_id devid;
-	struct lp8727_chg_param *chg_param;
-
-	/* Interrupt Handling */
-	int irq;
-	struct delayed_work work;
-	unsigned long debounce_jiffies;
-};
-
-static int lp8727_read_bytes(struct lp8727_chg *pchg, u8 reg, u8 *data, u8 len)
-{
-	s32 ret;
-
-	mutex_lock(&pchg->xfer_lock);
-	ret = i2c_smbus_read_i2c_block_data(pchg->client, reg, len, data);
-	mutex_unlock(&pchg->xfer_lock);
-
-	return (ret != len) ? -EIO : 0;
-}
-
-static inline int lp8727_read_byte(struct lp8727_chg *pchg, u8 reg, u8 *data)
-{
-	return lp8727_read_bytes(pchg, reg, data, 1);
-}
-
-static int lp8727_write_byte(struct lp8727_chg *pchg, u8 reg, u8 data)
-{
-	int ret;
-
-	mutex_lock(&pchg->xfer_lock);
-	ret = i2c_smbus_write_byte_data(pchg->client, reg, data);
-	mutex_unlock(&pchg->xfer_lock);
-
-	return ret;
-}
-
-static bool lp8727_is_charger_attached(const char *name, int id)
-{
-	if (!strcmp(name, "ac"))
-		return id == LP8727_ID_TA || id == LP8727_ID_DEDICATED_CHG;
-	else if (!strcmp(name, "usb"))
-		return id == LP8727_ID_USB_CHG;
-
-	return id >= LP8727_ID_TA && id <= LP8727_ID_USB_CHG;
-}
-
-static int lp8727_init_device(struct lp8727_chg *pchg)
-{
-	u8 val;
-	int ret;
-	u8 intstat[LP8788_NUM_INTREGS];
-
-	/* clear interrupts */
-	ret = lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS);
-	if (ret)
-		return ret;
-
-	val = LP8727_ID200_EN | LP8727_ADC_EN | LP8727_CP_EN;
-	ret = lp8727_write_byte(pchg, LP8727_CTRL1, val);
-	if (ret)
-		return ret;
-
-	val = LP8727_INT_EN | LP8727_CHGDET_EN;
-	return lp8727_write_byte(pchg, LP8727_CTRL2, val);
-}
-
-static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg)
-{
-	u8 val;
-
-	lp8727_read_byte(pchg, LP8727_STATUS1, &val);
-	return val & LP8727_DCPORT;
-}
-
-static int lp8727_is_usb_charger(struct lp8727_chg *pchg)
-{
-	u8 val;
-
-	lp8727_read_byte(pchg, LP8727_STATUS1, &val);
-	return val & LP8727_CHPORT;
-}
-
-static inline void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw)
-{
-	lp8727_write_byte(pchg, LP8727_SWCTRL, sw);
-}
-
-static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin)
-{
-	struct lp8727_platform_data *pdata = pchg->pdata;
-	u8 devid = LP8727_ID_NONE;
-	u8 swctrl = LP8727_SW_DM1_HiZ | LP8727_SW_DP2_HiZ;
-
-	switch (id) {
-	case 0x5:
-		devid = LP8727_ID_TA;
-		pchg->chg_param = pdata ? pdata->ac : NULL;
-		break;
-	case 0xB:
-		if (lp8727_is_dedicated_charger(pchg)) {
-			pchg->chg_param = pdata ? pdata->ac : NULL;
-			devid = LP8727_ID_DEDICATED_CHG;
-		} else if (lp8727_is_usb_charger(pchg)) {
-			pchg->chg_param = pdata ? pdata->usb : NULL;
-			devid = LP8727_ID_USB_CHG;
-			swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP;
-		} else if (vbusin) {
-			devid = LP8727_ID_USB_DS;
-			swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP;
-		}
-		break;
-	default:
-		devid = LP8727_ID_NONE;
-		pchg->chg_param = NULL;
-		break;
-	}
-
-	pchg->devid = devid;
-	lp8727_ctrl_switch(pchg, swctrl);
-}
-
-static void lp8727_enable_chgdet(struct lp8727_chg *pchg)
-{
-	u8 val;
-
-	lp8727_read_byte(pchg, LP8727_CTRL2, &val);
-	val |= LP8727_CHGDET_EN;
-	lp8727_write_byte(pchg, LP8727_CTRL2, val);
-}
-
-static void lp8727_delayed_func(struct work_struct *_work)
-{
-	struct lp8727_chg *pchg = container_of(_work, struct lp8727_chg,
-						work.work);
-	u8 intstat[LP8788_NUM_INTREGS];
-	u8 idno;
-	u8 vbus;
-
-	if (lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS)) {
-		dev_err(pchg->dev, "can not read INT registers\n");
-		return;
-	}
-
-	idno = intstat[0] & LP8727_IDNO;
-	vbus = intstat[0] & LP8727_VBUS;
-
-	lp8727_id_detection(pchg, idno, vbus);
-	lp8727_enable_chgdet(pchg);
-
-	power_supply_changed(pchg->psy->ac);
-	power_supply_changed(pchg->psy->usb);
-	power_supply_changed(pchg->psy->batt);
-}
-
-static irqreturn_t lp8727_isr_func(int irq, void *ptr)
-{
-	struct lp8727_chg *pchg = ptr;
-
-	schedule_delayed_work(&pchg->work, pchg->debounce_jiffies);
-	return IRQ_HANDLED;
-}
-
-static int lp8727_setup_irq(struct lp8727_chg *pchg)
-{
-	int ret;
-	int irq = pchg->client->irq;
-	unsigned delay_msec = pchg->pdata ? pchg->pdata->debounce_msec :
-						DEFAULT_DEBOUNCE_MSEC;
-
-	INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func);
-
-	if (irq <= 0) {
-		dev_warn(pchg->dev, "invalid irq number: %d\n", irq);
-		return 0;
-	}
-
-	ret = request_threaded_irq(irq,	NULL, lp8727_isr_func,
-				IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-				"lp8727_irq", pchg);
-
-	if (ret)
-		return ret;
-
-	pchg->irq = irq;
-	pchg->debounce_jiffies = msecs_to_jiffies(delay_msec);
-
-	return 0;
-}
-
-static void lp8727_release_irq(struct lp8727_chg *pchg)
-{
-	cancel_delayed_work_sync(&pchg->work);
-
-	if (pchg->irq)
-		free_irq(pchg->irq, pchg);
-}
-
-static enum power_supply_property lp8727_charger_prop[] = {
-	POWER_SUPPLY_PROP_ONLINE,
-};
-
-static enum power_supply_property lp8727_battery_prop[] = {
-	POWER_SUPPLY_PROP_STATUS,
-	POWER_SUPPLY_PROP_HEALTH,
-	POWER_SUPPLY_PROP_PRESENT,
-	POWER_SUPPLY_PROP_VOLTAGE_NOW,
-	POWER_SUPPLY_PROP_CAPACITY,
-	POWER_SUPPLY_PROP_TEMP,
-};
-
-static char *battery_supplied_to[] = {
-	"main_batt",
-};
-
-static int lp8727_charger_get_property(struct power_supply *psy,
-				       enum power_supply_property psp,
-				       union power_supply_propval *val)
-{
-	struct lp8727_chg *pchg = dev_get_drvdata(psy->dev.parent);
-
-	if (psp != POWER_SUPPLY_PROP_ONLINE)
-		return -EINVAL;
-
-	val->intval = lp8727_is_charger_attached(psy->desc->name, pchg->devid);
-
-	return 0;
-}
-
-static bool lp8727_is_high_temperature(enum lp8727_die_temp temp)
-{
-	switch (temp) {
-	case LP8788_TEMP_95C:
-	case LP8788_TEMP_115C:
-	case LP8788_TEMP_135C:
-		return true;
-	default:
-		return false;
-	}
-}
-
-static int lp8727_battery_get_property(struct power_supply *psy,
-				       enum power_supply_property psp,
-				       union power_supply_propval *val)
-{
-	struct lp8727_chg *pchg = dev_get_drvdata(psy->dev.parent);
-	struct lp8727_platform_data *pdata = pchg->pdata;
-	enum lp8727_die_temp temp;
-	u8 read;
-
-	switch (psp) {
-	case POWER_SUPPLY_PROP_STATUS:
-		if (!lp8727_is_charger_attached(psy->desc->name, pchg->devid)) {
-			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
-			return 0;
-		}
-
-		lp8727_read_byte(pchg, LP8727_STATUS1, &read);
-
-		val->intval = (read & LP8727_CHGSTAT) == LP8727_STAT_EOC ?
-				POWER_SUPPLY_STATUS_FULL :
-				POWER_SUPPLY_STATUS_CHARGING;
-		break;
-	case POWER_SUPPLY_PROP_HEALTH:
-		lp8727_read_byte(pchg, LP8727_STATUS2, &read);
-		temp = (read & LP8727_TEMP_STAT) >> LP8727_TEMP_SHIFT;
-
-		val->intval = lp8727_is_high_temperature(temp) ?
-			POWER_SUPPLY_HEALTH_OVERHEAT :
-			POWER_SUPPLY_HEALTH_GOOD;
-		break;
-	case POWER_SUPPLY_PROP_PRESENT:
-		if (!pdata)
-			return -EINVAL;
-
-		if (pdata->get_batt_present)
-			val->intval = pdata->get_batt_present();
-		break;
-	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
-		if (!pdata)
-			return -EINVAL;
-
-		if (pdata->get_batt_level)
-			val->intval = pdata->get_batt_level();
-		break;
-	case POWER_SUPPLY_PROP_CAPACITY:
-		if (!pdata)
-			return -EINVAL;
-
-		if (pdata->get_batt_capacity)
-			val->intval = pdata->get_batt_capacity();
-		break;
-	case POWER_SUPPLY_PROP_TEMP:
-		if (!pdata)
-			return -EINVAL;
-
-		if (pdata->get_batt_temp)
-			val->intval = pdata->get_batt_temp();
-		break;
-	default:
-		break;
-	}
-
-	return 0;
-}
-
-static void lp8727_charger_changed(struct power_supply *psy)
-{
-	struct lp8727_chg *pchg = dev_get_drvdata(psy->dev.parent);
-	u8 eoc_level;
-	u8 ichg;
-	u8 val;
-
-	/* skip if no charger exists */
-	if (!lp8727_is_charger_attached(psy->desc->name, pchg->devid))
-		return;
-
-	/* update charging parameters */
-	if (pchg->chg_param) {
-		eoc_level = pchg->chg_param->eoc_level;
-		ichg = pchg->chg_param->ichg;
-		val = (ichg << LP8727_ICHG_SHIFT) | eoc_level;
-		lp8727_write_byte(pchg, LP8727_CHGCTRL2, val);
-	}
-}
-
-static const struct power_supply_desc lp8727_ac_desc = {
-	.name			= "ac",
-	.type			= POWER_SUPPLY_TYPE_MAINS,
-	.properties		= lp8727_charger_prop,
-	.num_properties		= ARRAY_SIZE(lp8727_charger_prop),
-	.get_property		= lp8727_charger_get_property,
-};
-
-static const struct power_supply_desc lp8727_usb_desc = {
-	.name			= "usb",
-	.type			= POWER_SUPPLY_TYPE_USB,
-	.properties		= lp8727_charger_prop,
-	.num_properties		= ARRAY_SIZE(lp8727_charger_prop),
-	.get_property		= lp8727_charger_get_property,
-};
-
-static const struct power_supply_desc lp8727_batt_desc = {
-	.name			= "main_batt",
-	.type			= POWER_SUPPLY_TYPE_BATTERY,
-	.properties		= lp8727_battery_prop,
-	.num_properties		= ARRAY_SIZE(lp8727_battery_prop),
-	.get_property		= lp8727_battery_get_property,
-	.external_power_changed	= lp8727_charger_changed,
-};
-
-static int lp8727_register_psy(struct lp8727_chg *pchg)
-{
-	struct power_supply_config psy_cfg = {}; /* Only for ac and usb */
-	struct lp8727_psy *psy;
-
-	psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL);
-	if (!psy)
-		return -ENOMEM;
-
-	pchg->psy = psy;
-
-	psy_cfg.supplied_to = battery_supplied_to;
-	psy_cfg.num_supplicants = ARRAY_SIZE(battery_supplied_to);
-
-	psy->ac = power_supply_register(pchg->dev, &lp8727_ac_desc, &psy_cfg);
-	if (IS_ERR(psy->ac))
-		goto err_psy_ac;
-
-	psy->usb = power_supply_register(pchg->dev, &lp8727_usb_desc,
-					 &psy_cfg);
-	if (IS_ERR(psy->usb))
-		goto err_psy_usb;
-
-	psy->batt = power_supply_register(pchg->dev, &lp8727_batt_desc, NULL);
-	if (IS_ERR(psy->batt))
-		goto err_psy_batt;
-
-	return 0;
-
-err_psy_batt:
-	power_supply_unregister(psy->usb);
-err_psy_usb:
-	power_supply_unregister(psy->ac);
-err_psy_ac:
-	return -EPERM;
-}
-
-static void lp8727_unregister_psy(struct lp8727_chg *pchg)
-{
-	struct lp8727_psy *psy = pchg->psy;
-
-	if (!psy)
-		return;
-
-	power_supply_unregister(psy->ac);
-	power_supply_unregister(psy->usb);
-	power_supply_unregister(psy->batt);
-}
-
-#ifdef CONFIG_OF
-static struct lp8727_chg_param
-*lp8727_parse_charge_pdata(struct device *dev, struct device_node *np)
-{
-	struct lp8727_chg_param *param;
-
-	param = devm_kzalloc(dev, sizeof(*param), GFP_KERNEL);
-	if (!param)
-		goto out;
-
-	of_property_read_u8(np, "eoc-level", (u8 *)&param->eoc_level);
-	of_property_read_u8(np, "charging-current", (u8 *)&param->ichg);
-out:
-	return param;
-}
-
-static struct lp8727_platform_data *lp8727_parse_dt(struct device *dev)
-{
-	struct device_node *np = dev->of_node;
-	struct device_node *child;
-	struct lp8727_platform_data *pdata;
-	const char *type;
-
-	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata)
-		return ERR_PTR(-ENOMEM);
-
-	of_property_read_u32(np, "debounce-ms", &pdata->debounce_msec);
-
-	/* If charging parameter is not defined, just skip parsing the dt */
-	if (of_get_child_count(np) == 0)
-		return pdata;
-
-	for_each_child_of_node(np, child) {
-		of_property_read_string(child, "charger-type", &type);
-
-		if (!strcmp(type, "ac"))
-			pdata->ac = lp8727_parse_charge_pdata(dev, child);
-
-		if (!strcmp(type, "usb"))
-			pdata->usb = lp8727_parse_charge_pdata(dev, child);
-	}
-
-	return pdata;
-}
-#else
-static struct lp8727_platform_data *lp8727_parse_dt(struct device *dev)
-{
-	return NULL;
-}
-#endif
-
-static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
-{
-	struct lp8727_chg *pchg;
-	struct lp8727_platform_data *pdata;
-	int ret;
-
-	if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
-		return -EIO;
-
-	if (cl->dev.of_node) {
-		pdata = lp8727_parse_dt(&cl->dev);
-		if (IS_ERR(pdata))
-			return PTR_ERR(pdata);
-	} else {
-		pdata = dev_get_platdata(&cl->dev);
-	}
-
-	pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL);
-	if (!pchg)
-		return -ENOMEM;
-
-	pchg->client = cl;
-	pchg->dev = &cl->dev;
-	pchg->pdata = pdata;
-	i2c_set_clientdata(cl, pchg);
-
-	mutex_init(&pchg->xfer_lock);
-
-	ret = lp8727_init_device(pchg);
-	if (ret) {
-		dev_err(pchg->dev, "i2c communication err: %d", ret);
-		return ret;
-	}
-
-	ret = lp8727_register_psy(pchg);
-	if (ret) {
-		dev_err(pchg->dev, "power supplies register err: %d", ret);
-		return ret;
-	}
-
-	ret = lp8727_setup_irq(pchg);
-	if (ret) {
-		dev_err(pchg->dev, "irq handler err: %d", ret);
-		lp8727_unregister_psy(pchg);
-		return ret;
-	}
-
-	return 0;
-}
-
-static int lp8727_remove(struct i2c_client *cl)
-{
-	struct lp8727_chg *pchg = i2c_get_clientdata(cl);
-
-	lp8727_release_irq(pchg);
-	lp8727_unregister_psy(pchg);
-	return 0;
-}
-
-static const struct of_device_id lp8727_dt_ids[] = {
-	{ .compatible = "ti,lp8727", },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, lp8727_dt_ids);
-
-static const struct i2c_device_id lp8727_ids[] = {
-	{"lp8727", 0},
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, lp8727_ids);
-
-static struct i2c_driver lp8727_driver = {
-	.driver = {
-		   .name = "lp8727",
-		   .of_match_table = of_match_ptr(lp8727_dt_ids),
-		   },
-	.probe = lp8727_probe,
-	.remove = lp8727_remove,
-	.id_table = lp8727_ids,
-};
-module_i2c_driver(lp8727_driver);
-
-MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver");
-MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>, Daniel Jeong <daniel.jeong@ti.com>");
-MODULE_LICENSE("GPL");