You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
532 lines
15 KiB
532 lines
15 KiB
/*
|
|
* Battery driver for wm8350 PMIC
|
|
*
|
|
* Copyright 2007, 2008 Wolfson Microelectronics PLC.
|
|
*
|
|
* Based on OLPC Battery Driver
|
|
*
|
|
* Copyright 2006 David Woodhouse <dwmw2@infradead.org>
|
|
*
|
|
* 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/err.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/power_supply.h>
|
|
#include <linux/mfd/wm8350/supply.h>
|
|
#include <linux/mfd/wm8350/core.h>
|
|
#include <linux/mfd/wm8350/comparator.h>
|
|
|
|
static int wm8350_read_battery_uvolts(struct wm8350 *wm8350)
|
|
{
|
|
return wm8350_read_auxadc(wm8350, WM8350_AUXADC_BATT, 0, 0)
|
|
* WM8350_AUX_COEFF;
|
|
}
|
|
|
|
static int wm8350_read_line_uvolts(struct wm8350 *wm8350)
|
|
{
|
|
return wm8350_read_auxadc(wm8350, WM8350_AUXADC_LINE, 0, 0)
|
|
* WM8350_AUX_COEFF;
|
|
}
|
|
|
|
static int wm8350_read_usb_uvolts(struct wm8350 *wm8350)
|
|
{
|
|
return wm8350_read_auxadc(wm8350, WM8350_AUXADC_USB, 0, 0)
|
|
* WM8350_AUX_COEFF;
|
|
}
|
|
|
|
#define WM8350_BATT_SUPPLY 1
|
|
#define WM8350_USB_SUPPLY 2
|
|
#define WM8350_LINE_SUPPLY 4
|
|
|
|
static inline int wm8350_charge_time_min(struct wm8350 *wm8350, int min)
|
|
{
|
|
if (!wm8350->power.rev_g_coeff)
|
|
return (((min - 30) / 15) & 0xf) << 8;
|
|
else
|
|
return (((min - 30) / 30) & 0xf) << 8;
|
|
}
|
|
|
|
static int wm8350_get_supplies(struct wm8350 *wm8350)
|
|
{
|
|
u16 sm, ov, co, chrg;
|
|
int supplies = 0;
|
|
|
|
sm = wm8350_reg_read(wm8350, WM8350_STATE_MACHINE_STATUS);
|
|
ov = wm8350_reg_read(wm8350, WM8350_MISC_OVERRIDES);
|
|
co = wm8350_reg_read(wm8350, WM8350_COMPARATOR_OVERRIDES);
|
|
chrg = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2);
|
|
|
|
/* USB_SM */
|
|
sm = (sm & WM8350_USB_SM_MASK) >> WM8350_USB_SM_SHIFT;
|
|
|
|
/* CHG_ISEL */
|
|
chrg &= WM8350_CHG_ISEL_MASK;
|
|
|
|
/* If the USB state machine is active then we're using that with or
|
|
* without battery, otherwise check for wall supply */
|
|
if (((sm == WM8350_USB_SM_100_SLV) ||
|
|
(sm == WM8350_USB_SM_500_SLV) ||
|
|
(sm == WM8350_USB_SM_STDBY_SLV))
|
|
&& !(ov & WM8350_USB_LIMIT_OVRDE))
|
|
supplies = WM8350_USB_SUPPLY;
|
|
else if (((sm == WM8350_USB_SM_100_SLV) ||
|
|
(sm == WM8350_USB_SM_500_SLV) ||
|
|
(sm == WM8350_USB_SM_STDBY_SLV))
|
|
&& (ov & WM8350_USB_LIMIT_OVRDE) && (chrg == 0))
|
|
supplies = WM8350_USB_SUPPLY | WM8350_BATT_SUPPLY;
|
|
else if (co & WM8350_WALL_FB_OVRDE)
|
|
supplies = WM8350_LINE_SUPPLY;
|
|
else
|
|
supplies = WM8350_BATT_SUPPLY;
|
|
|
|
return supplies;
|
|
}
|
|
|
|
static int wm8350_charger_config(struct wm8350 *wm8350,
|
|
struct wm8350_charger_policy *policy)
|
|
{
|
|
u16 reg, eoc_mA, fast_limit_mA;
|
|
|
|
if (!policy) {
|
|
dev_warn(wm8350->dev,
|
|
"No charger policy, charger not configured.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* make sure USB fast charge current is not > 500mA */
|
|
if (policy->fast_limit_USB_mA > 500) {
|
|
dev_err(wm8350->dev, "USB fast charge > 500mA\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
eoc_mA = WM8350_CHG_EOC_mA(policy->eoc_mA);
|
|
|
|
wm8350_reg_unlock(wm8350);
|
|
|
|
reg = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_1)
|
|
& WM8350_CHG_ENA_R168;
|
|
wm8350_reg_write(wm8350, WM8350_BATTERY_CHARGER_CONTROL_1,
|
|
reg | eoc_mA | policy->trickle_start_mV |
|
|
WM8350_CHG_TRICKLE_TEMP_CHOKE |
|
|
WM8350_CHG_TRICKLE_USB_CHOKE |
|
|
WM8350_CHG_FAST_USB_THROTTLE);
|
|
|
|
if (wm8350_get_supplies(wm8350) & WM8350_USB_SUPPLY) {
|
|
fast_limit_mA =
|
|
WM8350_CHG_FAST_LIMIT_mA(policy->fast_limit_USB_mA);
|
|
wm8350_reg_write(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2,
|
|
policy->charge_mV | policy->trickle_charge_USB_mA |
|
|
fast_limit_mA | wm8350_charge_time_min(wm8350,
|
|
policy->charge_timeout));
|
|
|
|
} else {
|
|
fast_limit_mA =
|
|
WM8350_CHG_FAST_LIMIT_mA(policy->fast_limit_mA);
|
|
wm8350_reg_write(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2,
|
|
policy->charge_mV | policy->trickle_charge_mA |
|
|
fast_limit_mA | wm8350_charge_time_min(wm8350,
|
|
policy->charge_timeout));
|
|
}
|
|
|
|
wm8350_reg_lock(wm8350);
|
|
return 0;
|
|
}
|
|
|
|
static int wm8350_batt_status(struct wm8350 *wm8350)
|
|
{
|
|
u16 state;
|
|
|
|
state = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2);
|
|
state &= WM8350_CHG_STS_MASK;
|
|
|
|
switch (state) {
|
|
case WM8350_CHG_STS_OFF:
|
|
return POWER_SUPPLY_STATUS_DISCHARGING;
|
|
|
|
case WM8350_CHG_STS_TRICKLE:
|
|
case WM8350_CHG_STS_FAST:
|
|
return POWER_SUPPLY_STATUS_CHARGING;
|
|
|
|
default:
|
|
return POWER_SUPPLY_STATUS_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
static ssize_t charger_state_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct wm8350 *wm8350 = dev_get_drvdata(dev);
|
|
char *charge;
|
|
int state;
|
|
|
|
state = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2) &
|
|
WM8350_CHG_STS_MASK;
|
|
switch (state) {
|
|
case WM8350_CHG_STS_OFF:
|
|
charge = "Charger Off";
|
|
break;
|
|
case WM8350_CHG_STS_TRICKLE:
|
|
charge = "Trickle Charging";
|
|
break;
|
|
case WM8350_CHG_STS_FAST:
|
|
charge = "Fast Charging";
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
return sprintf(buf, "%s\n", charge);
|
|
}
|
|
|
|
static DEVICE_ATTR(charger_state, 0444, charger_state_show, NULL);
|
|
|
|
static void wm8350_charger_handler(struct wm8350 *wm8350, int irq, void *data)
|
|
{
|
|
struct wm8350_power *power = &wm8350->power;
|
|
struct wm8350_charger_policy *policy = power->policy;
|
|
|
|
switch (irq) {
|
|
case WM8350_IRQ_CHG_BAT_FAIL:
|
|
dev_err(wm8350->dev, "battery failed\n");
|
|
break;
|
|
case WM8350_IRQ_CHG_TO:
|
|
dev_err(wm8350->dev, "charger timeout\n");
|
|
power_supply_changed(&power->battery);
|
|
break;
|
|
|
|
case WM8350_IRQ_CHG_BAT_HOT:
|
|
case WM8350_IRQ_CHG_BAT_COLD:
|
|
case WM8350_IRQ_CHG_START:
|
|
case WM8350_IRQ_CHG_END:
|
|
power_supply_changed(&power->battery);
|
|
break;
|
|
|
|
case WM8350_IRQ_CHG_FAST_RDY:
|
|
dev_dbg(wm8350->dev, "fast charger ready\n");
|
|
wm8350_charger_config(wm8350, policy);
|
|
wm8350_reg_unlock(wm8350);
|
|
wm8350_set_bits(wm8350, WM8350_BATTERY_CHARGER_CONTROL_1,
|
|
WM8350_CHG_FAST);
|
|
wm8350_reg_lock(wm8350);
|
|
break;
|
|
|
|
case WM8350_IRQ_CHG_VBATT_LT_3P9:
|
|
dev_warn(wm8350->dev, "battery < 3.9V\n");
|
|
break;
|
|
case WM8350_IRQ_CHG_VBATT_LT_3P1:
|
|
dev_warn(wm8350->dev, "battery < 3.1V\n");
|
|
break;
|
|
case WM8350_IRQ_CHG_VBATT_LT_2P85:
|
|
dev_warn(wm8350->dev, "battery < 2.85V\n");
|
|
break;
|
|
|
|
/* Supply change. We will overnotify but it should do
|
|
* no harm. */
|
|
case WM8350_IRQ_EXT_USB_FB:
|
|
case WM8350_IRQ_EXT_WALL_FB:
|
|
wm8350_charger_config(wm8350, policy);
|
|
case WM8350_IRQ_EXT_BAT_FB: /* Fall through */
|
|
power_supply_changed(&power->battery);
|
|
power_supply_changed(&power->usb);
|
|
power_supply_changed(&power->ac);
|
|
break;
|
|
|
|
default:
|
|
dev_err(wm8350->dev, "Unknown interrupt %d\n", irq);
|
|
}
|
|
}
|
|
|
|
/*********************************************************************
|
|
* AC Power
|
|
*********************************************************************/
|
|
static int wm8350_ac_get_prop(struct power_supply *psy,
|
|
enum power_supply_property psp,
|
|
union power_supply_propval *val)
|
|
{
|
|
struct wm8350 *wm8350 = dev_get_drvdata(psy->dev->parent);
|
|
int ret = 0;
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_ONLINE:
|
|
val->intval = !!(wm8350_get_supplies(wm8350) &
|
|
WM8350_LINE_SUPPLY);
|
|
break;
|
|
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
|
val->intval = wm8350_read_line_uvolts(wm8350);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static enum power_supply_property wm8350_ac_props[] = {
|
|
POWER_SUPPLY_PROP_ONLINE,
|
|
POWER_SUPPLY_PROP_VOLTAGE_NOW,
|
|
};
|
|
|
|
/*********************************************************************
|
|
* USB Power
|
|
*********************************************************************/
|
|
static int wm8350_usb_get_prop(struct power_supply *psy,
|
|
enum power_supply_property psp,
|
|
union power_supply_propval *val)
|
|
{
|
|
struct wm8350 *wm8350 = dev_get_drvdata(psy->dev->parent);
|
|
int ret = 0;
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_ONLINE:
|
|
val->intval = !!(wm8350_get_supplies(wm8350) &
|
|
WM8350_USB_SUPPLY);
|
|
break;
|
|
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
|
val->intval = wm8350_read_usb_uvolts(wm8350);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static enum power_supply_property wm8350_usb_props[] = {
|
|
POWER_SUPPLY_PROP_ONLINE,
|
|
POWER_SUPPLY_PROP_VOLTAGE_NOW,
|
|
};
|
|
|
|
/*********************************************************************
|
|
* Battery properties
|
|
*********************************************************************/
|
|
|
|
static int wm8350_bat_check_health(struct wm8350 *wm8350)
|
|
{
|
|
u16 reg;
|
|
|
|
if (wm8350_read_battery_uvolts(wm8350) < 2850000)
|
|
return POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
|
|
|
|
reg = wm8350_reg_read(wm8350, WM8350_CHARGER_OVERRIDES);
|
|
if (reg & WM8350_CHG_BATT_HOT_OVRDE)
|
|
return POWER_SUPPLY_HEALTH_OVERHEAT;
|
|
|
|
if (reg & WM8350_CHG_BATT_COLD_OVRDE)
|
|
return POWER_SUPPLY_HEALTH_COLD;
|
|
|
|
return POWER_SUPPLY_HEALTH_GOOD;
|
|
}
|
|
|
|
static int wm8350_bat_get_property(struct power_supply *psy,
|
|
enum power_supply_property psp,
|
|
union power_supply_propval *val)
|
|
{
|
|
struct wm8350 *wm8350 = dev_get_drvdata(psy->dev->parent);
|
|
int ret = 0;
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_STATUS:
|
|
val->intval = wm8350_batt_status(wm8350);
|
|
break;
|
|
case POWER_SUPPLY_PROP_ONLINE:
|
|
val->intval = !!(wm8350_get_supplies(wm8350) &
|
|
WM8350_BATT_SUPPLY);
|
|
break;
|
|
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
|
|
val->intval = wm8350_read_battery_uvolts(wm8350);
|
|
break;
|
|
case POWER_SUPPLY_PROP_HEALTH:
|
|
val->intval = wm8350_bat_check_health(wm8350);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static enum power_supply_property wm8350_bat_props[] = {
|
|
POWER_SUPPLY_PROP_STATUS,
|
|
POWER_SUPPLY_PROP_ONLINE,
|
|
POWER_SUPPLY_PROP_VOLTAGE_NOW,
|
|
POWER_SUPPLY_PROP_HEALTH,
|
|
};
|
|
|
|
/*********************************************************************
|
|
* Initialisation
|
|
*********************************************************************/
|
|
|
|
static void wm8350_init_charger(struct wm8350 *wm8350)
|
|
{
|
|
/* register our interest in charger events */
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_TO,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_TO);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_END,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_END);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_START,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_START);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_FAST_RDY);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85);
|
|
|
|
/* and supply change events */
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_EXT_USB_FB,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_EXT_USB_FB);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_EXT_WALL_FB,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_EXT_WALL_FB);
|
|
wm8350_register_irq(wm8350, WM8350_IRQ_EXT_BAT_FB,
|
|
wm8350_charger_handler, NULL);
|
|
wm8350_unmask_irq(wm8350, WM8350_IRQ_EXT_BAT_FB);
|
|
}
|
|
|
|
static void free_charger_irq(struct wm8350 *wm8350)
|
|
{
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_HOT);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_COLD);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_BAT_FAIL);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_TO);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_TO);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_END);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_END);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_START);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_START);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P9);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_3P1);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_CHG_VBATT_LT_2P85);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_EXT_USB_FB);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_EXT_USB_FB);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_EXT_WALL_FB);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_EXT_WALL_FB);
|
|
wm8350_mask_irq(wm8350, WM8350_IRQ_EXT_BAT_FB);
|
|
wm8350_free_irq(wm8350, WM8350_IRQ_EXT_BAT_FB);
|
|
}
|
|
|
|
static __devinit int wm8350_power_probe(struct platform_device *pdev)
|
|
{
|
|
struct wm8350 *wm8350 = platform_get_drvdata(pdev);
|
|
struct wm8350_power *power = &wm8350->power;
|
|
struct wm8350_charger_policy *policy = power->policy;
|
|
struct power_supply *usb = &power->usb;
|
|
struct power_supply *battery = &power->battery;
|
|
struct power_supply *ac = &power->ac;
|
|
int ret;
|
|
|
|
ac->name = "wm8350-ac";
|
|
ac->type = POWER_SUPPLY_TYPE_MAINS;
|
|
ac->properties = wm8350_ac_props;
|
|
ac->num_properties = ARRAY_SIZE(wm8350_ac_props);
|
|
ac->get_property = wm8350_ac_get_prop;
|
|
ret = power_supply_register(&pdev->dev, ac);
|
|
if (ret)
|
|
return ret;
|
|
|
|
battery->name = "wm8350-battery";
|
|
battery->properties = wm8350_bat_props;
|
|
battery->num_properties = ARRAY_SIZE(wm8350_bat_props);
|
|
battery->get_property = wm8350_bat_get_property;
|
|
battery->use_for_apm = 1;
|
|
ret = power_supply_register(&pdev->dev, battery);
|
|
if (ret)
|
|
goto battery_failed;
|
|
|
|
usb->name = "wm8350-usb",
|
|
usb->type = POWER_SUPPLY_TYPE_USB;
|
|
usb->properties = wm8350_usb_props;
|
|
usb->num_properties = ARRAY_SIZE(wm8350_usb_props);
|
|
usb->get_property = wm8350_usb_get_prop;
|
|
ret = power_supply_register(&pdev->dev, usb);
|
|
if (ret)
|
|
goto usb_failed;
|
|
|
|
ret = device_create_file(&pdev->dev, &dev_attr_charger_state);
|
|
if (ret < 0)
|
|
dev_warn(wm8350->dev, "failed to add charge sysfs: %d\n", ret);
|
|
ret = 0;
|
|
|
|
wm8350_init_charger(wm8350);
|
|
if (wm8350_charger_config(wm8350, policy) == 0) {
|
|
wm8350_reg_unlock(wm8350);
|
|
wm8350_set_bits(wm8350, WM8350_POWER_MGMT_5, WM8350_CHG_ENA);
|
|
wm8350_reg_lock(wm8350);
|
|
}
|
|
|
|
return ret;
|
|
|
|
usb_failed:
|
|
power_supply_unregister(battery);
|
|
battery_failed:
|
|
power_supply_unregister(ac);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static __devexit int wm8350_power_remove(struct platform_device *pdev)
|
|
{
|
|
struct wm8350 *wm8350 = platform_get_drvdata(pdev);
|
|
struct wm8350_power *power = &wm8350->power;
|
|
|
|
free_charger_irq(wm8350);
|
|
device_remove_file(&pdev->dev, &dev_attr_charger_state);
|
|
power_supply_unregister(&power->battery);
|
|
power_supply_unregister(&power->ac);
|
|
power_supply_unregister(&power->usb);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver wm8350_power_driver = {
|
|
.probe = wm8350_power_probe,
|
|
.remove = __devexit_p(wm8350_power_remove),
|
|
.driver = {
|
|
.name = "wm8350-power",
|
|
},
|
|
};
|
|
|
|
static int __init wm8350_power_init(void)
|
|
{
|
|
return platform_driver_register(&wm8350_power_driver);
|
|
}
|
|
module_init(wm8350_power_init);
|
|
|
|
static void __exit wm8350_power_exit(void)
|
|
{
|
|
platform_driver_unregister(&wm8350_power_driver);
|
|
}
|
|
module_exit(wm8350_power_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("Power supply driver for WM8350");
|
|
MODULE_ALIAS("platform:wm8350-power");
|
|
|