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1. New drivers:

Browse Source 
- Marvell 88pm860x charger and battery drivers;
    - Texas Instruments LP8788 charger driver;
 2. Two new power supply properties: whether a battery is authentic, and
    chargers' maximal currents and voltages;
 3. A lot of TI LP8727 Charger cleanups;
 4. New features for Charger Manager, mainly now we can disable specific
    regulators;
 5. Random fixes and cleanups for other drivers.
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Merge tag 'for-v3.7' of git://git.infradead.org/battery-2.6

Pull battery updates from Anton Vorontsov:
 "1. New drivers:
     - Marvell 88pm860x charger and battery drivers;
     - Texas Instruments LP8788 charger driver;
  2. Two new power supply properties: whether a battery is authentic,
     and chargers' maximal currents and voltages;
  3. A lot of TI LP8727 Charger cleanups;
  4. New features for Charger Manager, mainly now we can disable
     specific regulators;
  5. Random fixes and cleanups for other drivers."

Fix up trivial conflicts in <linux/mfd/88pm860x.h>

* tag 'for-v3.7' of git://git.infradead.org/battery-2.6: (52 commits)
  pda_power: Remove ac_draw_failed goto and label
  charger-manager: Add support sysfs entry for charger
  charger-manager: Support limit of maximum possible
  charger-manager: Check fully charged state of battery periodically
  lp8727_charger: More pure cosmetic improvements
  lp8727_charger: Fix checkpatch warning
  lp8727_charger: Add description in the private data
  lp8727_charger: Fix a typo - chg_parm to chg_param
  lp8727_charger: Make some cosmetic changes in lp8727_delayed_func()
  lp8727_charger: Clean up lp8727_charger_changed()
  lp8727_charger: Return if the battery is discharging
  lp8727_charger: Make lp8727_charger_get_propery() simpler
  lp8727_charger: Make lp8727_ctrl_switch() inline
  lp8727_charger: Make lp8727_init_device() shorter
  lp8727_charger: Clean up lp8727_is_charger_attached()
  lp8727_charger: Use specific definition
  lp8727_charger: Clean up lp8727 definitions
  lp8727_charger: Use the definition rather than enum
  lp8727_charger: Fix code for getting battery temp
  lp8727_charger: Clear interrrupts at inital time
  ...
This commit is contained in:
Linus Torvalds 2012-10-07 17:29:24 +09:00
commit e665faa424
26 changed files with 3519 additions and 297 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Documentation/power/power_supply_class.txt
View File

@ -81,6 +81,9 @@ This defines trickle and fast charges. For batteries that
are already charged or discharging, 'n/a' can be displayed (or
'unknown', if the status is not known).
AUTHENTIC - indicates the power supply (battery or charger) connected
to the platform is authentic(1) or non authentic(0).
HEALTH - represents health of the battery, values corresponds to
POWER_SUPPLY_HEALTH_*, defined in battery.h.
@ -113,8 +116,12 @@ be negative; there is no empty or full value. It is only useful for
relative, time-based measurements.
CONSTANT_CHARGE_CURRENT - constant charge current programmed by charger.
CONSTANT_CHARGE_CURRENT_MAX - maximum charge current supported by the
power supply object.
CONSTANT_CHARGE_VOLTAGE - constant charge voltage programmed by charger.
CONSTANT_CHARGE_VOLTAGE_MAX - maximum charge voltage supported by the
power supply object.
ENERGY_FULL, ENERGY_EMPTY - same as above but for energy.

22
drivers/mfd/88pm860x-core.c
View File

@ -24,6 +24,7 @@
#include <linux/mfd/core.h>
#include <linux/mfd/88pm860x.h>
#include <linux/regulator/machine.h>
#include <linux/power/charger-manager.h>
#define INT_STATUS_NUM 3
@ -150,7 +151,8 @@ static struct resource battery_resources[] __devinitdata = {
static struct resource charger_resources[] __devinitdata = {
{PM8607_IRQ_CHG, PM8607_IRQ_CHG, "charger detect", IORESOURCE_IRQ,},
{PM8607_IRQ_CHG_DONE, PM8607_IRQ_CHG_DONE, "charging done", IORESOURCE_IRQ,},
{PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging timeout", IORESOURCE_IRQ,},
{PM8607_IRQ_CHG_FAIL, PM8607_IRQ_CHG_FAIL, "charging timeout", IORESOURCE_IRQ,},
{PM8607_IRQ_CHG_FAULT, PM8607_IRQ_CHG_FAULT, "charging fault", IORESOURCE_IRQ,},
{PM8607_IRQ_GPADC1, PM8607_IRQ_GPADC1, "battery temperature", IORESOURCE_IRQ,},
{PM8607_IRQ_VBAT, PM8607_IRQ_VBAT, "battery voltage", IORESOURCE_IRQ,},
{PM8607_IRQ_VCHG, PM8607_IRQ_VCHG, "vchg voltage", IORESOURCE_IRQ,},
@ -318,10 +320,15 @@ static struct regulator_init_data preg_init_data = {
.consumer_supplies = &preg_supply[0],
};
static struct charger_regulator chg_desc_regulator_data[] = {
{ .regulator_name = "preg", },
};
static struct mfd_cell power_devs[] = {
{"88pm860x-battery", -1,},
{"88pm860x-charger", -1,},
{"88pm860x-preg", -1,},
{"charger-manager", -1,},
};
static struct mfd_cell rtc_devs[] = {
@ -929,6 +936,19 @@ static void __devinit device_power_init(struct pm860x_chip *chip,
NULL, chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add preg subdev\n");
if (pdata->chg_desc) {
pdata->chg_desc->charger_regulators =
&chg_desc_regulator_data[0];
pdata->chg_desc->num_charger_regulators =
ARRAY_SIZE(chg_desc_regulator_data),
power_devs[3].platform_data = pdata->chg_desc;
power_devs[3].pdata_size = sizeof(*pdata->chg_desc);
ret = mfd_add_devices(chip->dev, 0, &power_devs[3], 1,
NULL, chip->irq_base, NULL);
if (ret < 0)
dev_err(chip->dev, "Failed to add chg-manager subdev\n");
}
}
static void __devinit device_onkey_init(struct pm860x_chip *chip,

1041
drivers/power/88pm860x_battery.c Normal file
View File

File diff suppressed because it is too large Load Diff

746
drivers/power/88pm860x_charger.c Normal file
View File

@ -0,0 +1,746 @@
/*
* Battery driver for Marvell 88PM860x PMIC
*
* Copyright (c) 2012 Marvell International Ltd.
* Author: Jett Zhou <jtzhou@marvell.com>
* Haojian Zhuang <haojian.zhuang@marvell.com>
*
* 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/platform_device.h>
#include <linux/slab.h>
#include <linux/power_supply.h>
#include <linux/mfd/88pm860x.h>
#include <linux/delay.h>
#include <linux/uaccess.h>
#include <asm/div64.h>
/* bit definitions of Status Query Interface 2 */
#define STATUS2_CHG (1 << 2)
/* bit definitions of Reset Out Register */
#define RESET_SW_PD (1 << 7)
/* bit definitions of PreReg 1 */
#define PREREG1_90MA (0x0)
#define PREREG1_180MA (0x1)
#define PREREG1_450MA (0x4)
#define PREREG1_540MA (0x5)
#define PREREG1_1350MA (0xE)
#define PREREG1_VSYS_4_5V (3 << 4)
/* bit definitions of Charger Control 1 Register */
#define CC1_MODE_OFF (0)
#define CC1_MODE_PRECHARGE (1)
#define CC1_MODE_FASTCHARGE (2)
#define CC1_MODE_PULSECHARGE (3)
#define CC1_ITERM_20MA (0 << 2)
#define CC1_ITERM_60MA (2 << 2)
#define CC1_VFCHG_4_2V (9 << 4)
/* bit definitions of Charger Control 2 Register */
#define CC2_ICHG_100MA (0x1)
#define CC2_ICHG_500MA (0x9)
#define CC2_ICHG_1000MA (0x13)
/* bit definitions of Charger Control 3 Register */
#define CC3_180MIN_TIMEOUT (0x6 << 4)
#define CC3_270MIN_TIMEOUT (0x7 << 4)
#define CC3_360MIN_TIMEOUT (0xA << 4)
#define CC3_DISABLE_TIMEOUT (0xF << 4)
/* bit definitions of Charger Control 4 Register */
#define CC4_IPRE_40MA (7)
#define CC4_VPCHG_3_2V (3 << 4)
#define CC4_IFCHG_MON_EN (1 << 6)
#define CC4_BTEMP_MON_EN (1 << 7)
/* bit definitions of Charger Control 6 Register */
#define CC6_BAT_OV_EN (1 << 2)
#define CC6_BAT_UV_EN (1 << 3)
#define CC6_UV_VBAT_SET (0x3 << 6) /* 2.8v */
/* bit definitions of Charger Control 7 Register */
#define CC7_BAT_REM_EN (1 << 3)
#define CC7_IFSM_EN (1 << 7)
/* bit definitions of Measurement Enable 1 Register */
#define MEAS1_VBAT (1 << 0)
/* bit definitions of Measurement Enable 3 Register */
#define MEAS3_IBAT_EN (1 << 0)
#define MEAS3_CC_EN (1 << 2)
#define FSM_INIT 0
#define FSM_DISCHARGE 1
#define FSM_PRECHARGE 2
#define FSM_FASTCHARGE 3
#define PRECHARGE_THRESHOLD 3100
#define POWEROFF_THRESHOLD 3400
#define CHARGE_THRESHOLD 4000
#define DISCHARGE_THRESHOLD 4180
/* over-temperature on PM8606 setting */
#define OVER_TEMP_FLAG (1 << 6)
#define OVTEMP_AUTORECOVER (1 << 3)
/* over-voltage protect on vchg setting mv */
#define VCHG_NORMAL_LOW 4200
#define VCHG_NORMAL_CHECK 5800
#define VCHG_NORMAL_HIGH 6000
#define VCHG_OVP_LOW 5500
struct pm860x_charger_info {
struct pm860x_chip *chip;
struct i2c_client *i2c;
struct i2c_client *i2c_8606;
struct device *dev;
struct power_supply usb;
struct mutex lock;
int irq_nums;
int irq[7];
unsigned state:3; /* fsm state */
unsigned online:1; /* usb charger */
unsigned present:1; /* battery present */
unsigned allowed:1;
};
static char *pm860x_supplied_to[] = {
"battery-monitor",
};
static int measure_vchg(struct pm860x_charger_info *info, int *data)
{
unsigned char buf[2];
int ret = 0;
ret = pm860x_bulk_read(info->i2c, PM8607_VCHG_MEAS1, 2, buf);
if (ret < 0)
return ret;
*data = ((buf[0] & 0xff) << 4) | (buf[1] & 0x0f);
/* V_BATT_MEAS(mV) = value * 5 * 1.8 * 1000 / (2^12) */
*data = ((*data & 0xfff) * 9 * 125) >> 9;
dev_dbg(info->dev, "%s, vchg: %d mv\n", __func__, *data);
return ret;
}
static void set_vchg_threshold(struct pm860x_charger_info *info,
int min, int max)
{
int data;
/* (tmp << 8) * / 5 / 1800 */
if (min <= 0)
data = 0;
else
data = (min << 5) / 1125;
pm860x_reg_write(info->i2c, PM8607_VCHG_LOWTH, data);
dev_dbg(info->dev, "VCHG_LOWTH:%dmv, 0x%x\n", min, data);
if (max <= 0)
data = 0xff;
else
data = (max << 5) / 1125;
pm860x_reg_write(info->i2c, PM8607_VCHG_HIGHTH, data);
dev_dbg(info->dev, "VCHG_HIGHTH:%dmv, 0x%x\n", max, data);
}
static void set_vbatt_threshold(struct pm860x_charger_info *info,
int min, int max)
{
int data;
/* (tmp << 8) * 3 / 1800 */
if (min <= 0)
data = 0;
else
data = (min << 5) / 675;
pm860x_reg_write(info->i2c, PM8607_VBAT_LOWTH, data);
dev_dbg(info->dev, "VBAT Min:%dmv, LOWTH:0x%x\n", min, data);
if (max <= 0)
data = 0xff;
else
data = (max << 5) / 675;
pm860x_reg_write(info->i2c, PM8607_VBAT_HIGHTH, data);
dev_dbg(info->dev, "VBAT Max:%dmv, HIGHTH:0x%x\n", max, data);
return;
}
static int start_precharge(struct pm860x_charger_info *info)
{
int ret;
dev_dbg(info->dev, "Start Pre-charging!\n");
set_vbatt_threshold(info, 0, 0);
ret = pm860x_reg_write(info->i2c_8606, PM8606_PREREGULATORA,
PREREG1_1350MA | PREREG1_VSYS_4_5V);
if (ret < 0)
goto out;
/* stop charging */
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3,
CC1_MODE_OFF);
if (ret < 0)
goto out;
/* set 270 minutes timeout */
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL3, (0xf << 4),
CC3_270MIN_TIMEOUT);
if (ret < 0)
goto out;
/* set precharge current, termination voltage, IBAT & TBAT monitor */
ret = pm860x_reg_write(info->i2c, PM8607_CHG_CTRL4,
CC4_IPRE_40MA | CC4_VPCHG_3_2V |
CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN);
if (ret < 0)
goto out;
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL7,
CC7_BAT_REM_EN | CC7_IFSM_EN,
CC7_BAT_REM_EN | CC7_IFSM_EN);
if (ret < 0)
goto out;
/* trigger precharge */
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3,
CC1_MODE_PRECHARGE);
out:
return ret;
}
static int start_fastcharge(struct pm860x_charger_info *info)
{
int ret;
dev_dbg(info->dev, "Start Fast-charging!\n");
/* set fastcharge termination current & voltage, disable charging */
ret = pm860x_reg_write(info->i2c, PM8607_CHG_CTRL1,
CC1_MODE_OFF | CC1_ITERM_60MA |
CC1_VFCHG_4_2V);
if (ret < 0)
goto out;
ret = pm860x_reg_write(info->i2c_8606, PM8606_PREREGULATORA,
PREREG1_540MA | PREREG1_VSYS_4_5V);
if (ret < 0)
goto out;
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL2, 0x1f,
CC2_ICHG_500MA);
if (ret < 0)
goto out;
/* set 270 minutes timeout */
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL3, (0xf << 4),
CC3_270MIN_TIMEOUT);
if (ret < 0)
goto out;
/* set IBAT & TBAT monitor */
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL4,
CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN,
CC4_IFCHG_MON_EN | CC4_BTEMP_MON_EN);
if (ret < 0)
goto out;
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL6,
CC6_BAT_OV_EN | CC6_BAT_UV_EN |
CC6_UV_VBAT_SET,
CC6_BAT_OV_EN | CC6_BAT_UV_EN |
CC6_UV_VBAT_SET);
if (ret < 0)
goto out;
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL7,
CC7_BAT_REM_EN | CC7_IFSM_EN,
CC7_BAT_REM_EN | CC7_IFSM_EN);
if (ret < 0)
goto out;
/* launch fast-charge */
ret = pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3,
CC1_MODE_FASTCHARGE);
/* vchg threshold setting */
set_vchg_threshold(info, VCHG_NORMAL_LOW, VCHG_NORMAL_HIGH);
out:
return ret;
}
static void stop_charge(struct pm860x_charger_info *info, int vbatt)
{
dev_dbg(info->dev, "Stop charging!\n");
pm860x_set_bits(info->i2c, PM8607_CHG_CTRL1, 3, CC1_MODE_OFF);
if (vbatt > CHARGE_THRESHOLD && info->online)
set_vbatt_threshold(info, CHARGE_THRESHOLD, 0);
}
static void power_off_notification(struct pm860x_charger_info *info)
{
dev_dbg(info->dev, "Power-off notification!\n");
}
static int set_charging_fsm(struct pm860x_charger_info *info)
{
struct power_supply *psy;
union power_supply_propval data;
unsigned char fsm_state[][16] = { "init", "discharge", "precharge",
"fastcharge",
};
int ret;
int vbatt;
psy = power_supply_get_by_name(pm860x_supplied_to[0]);
if (!psy)
return -EINVAL;
ret = psy->get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW, &data);
if (ret)
return ret;
vbatt = data.intval / 1000;
ret = psy->get_property(psy, POWER_SUPPLY_PROP_PRESENT, &data);
if (ret)
return ret;
mutex_lock(&info->lock);
info->present = data.intval;
dev_dbg(info->dev, "Entering FSM:%s, Charger:%s, Battery:%s, "
"Allowed:%d\n",
&fsm_state[info->state][0],
(info->online) ? "online" : "N/A",
(info->present) ? "present" : "N/A", info->allowed);
dev_dbg(info->dev, "set_charging_fsm:vbatt:%d(mV)\n", vbatt);
switch (info->state) {
case FSM_INIT:
if (info->online && info->present && info->allowed) {
if (vbatt < PRECHARGE_THRESHOLD) {
info->state = FSM_PRECHARGE;
start_precharge(info);
} else if (vbatt > DISCHARGE_THRESHOLD) {
info->state = FSM_DISCHARGE;
stop_charge(info, vbatt);
} else if (vbatt < DISCHARGE_THRESHOLD) {
info->state = FSM_FASTCHARGE;
start_fastcharge(info);
}
} else {
if (vbatt < POWEROFF_THRESHOLD) {
power_off_notification(info);
} else {
info->state = FSM_DISCHARGE;
stop_charge(info, vbatt);
}
}
break;
case FSM_PRECHARGE:
if (info->online && info->present && info->allowed) {
if (vbatt > PRECHARGE_THRESHOLD) {
info->state = FSM_FASTCHARGE;
start_fastcharge(info);
}
} else {
info->state = FSM_DISCHARGE;
stop_charge(info, vbatt);
}
break;
case FSM_FASTCHARGE:
if (info->online && info->present && info->allowed) {
if (vbatt < PRECHARGE_THRESHOLD) {
info->state = FSM_PRECHARGE;
start_precharge(info);
}
} else {
info->state = FSM_DISCHARGE;
stop_charge(info, vbatt);
}
break;
case FSM_DISCHARGE:
if (info->online && info->present && info->allowed) {
if (vbatt < PRECHARGE_THRESHOLD) {
info->state = FSM_PRECHARGE;
start_precharge(info);
} else if (vbatt < DISCHARGE_THRESHOLD) {
info->state = FSM_FASTCHARGE;
start_fastcharge(info);
}
} else {
if (vbatt < POWEROFF_THRESHOLD)
power_off_notification(info);
else if (vbatt > CHARGE_THRESHOLD && info->online)
set_vbatt_threshold(info, CHARGE_THRESHOLD, 0);
}
break;
default:
dev_warn(info->dev, "FSM meets wrong state:%d\n",
info->state);
break;
}
dev_dbg(info->dev,
"Out FSM:%s, Charger:%s, Battery:%s, Allowed:%d\n",
&fsm_state[info->state][0],
(info->online) ? "online" : "N/A",
(info->present) ? "present" : "N/A", info->allowed);
mutex_unlock(&info->lock);
return 0;
}
static irqreturn_t pm860x_charger_handler(int irq, void *data)
{
struct pm860x_charger_info *info = data;
int ret;
mutex_lock(&info->lock);
ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2);
if (ret < 0) {
mutex_unlock(&info->lock);
goto out;
}
if (ret & STATUS2_CHG) {
info->online = 1;
info->allowed = 1;
} else {
info->online = 0;
info->allowed = 0;
}
mutex_unlock(&info->lock);
dev_dbg(info->dev, "%s, Charger:%s, Allowed:%d\n", __func__,
(info->online) ? "online" : "N/A", info->allowed);
set_charging_fsm(info);
power_supply_changed(&info->usb);
out:
return IRQ_HANDLED;
}
static irqreturn_t pm860x_temp_handler(int irq, void *data)
{
struct power_supply *psy;
struct pm860x_charger_info *info = data;
union power_supply_propval temp;
int value;
int ret;
psy = power_supply_get_by_name(pm860x_supplied_to[0]);
if (!psy)
goto out;
ret = psy->get_property(psy, POWER_SUPPLY_PROP_TEMP, &temp);
if (ret)
goto out;
value = temp.intval / 10;
mutex_lock(&info->lock);
/* Temperature < -10 C or >40 C, Will not allow charge */
if (value < -10 || value > 40)
info->allowed = 0;
else
info->allowed = 1;
dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);
mutex_unlock(&info->lock);
set_charging_fsm(info);
out:
return IRQ_HANDLED;
}
static irqreturn_t pm860x_exception_handler(int irq, void *data)
{
struct pm860x_charger_info *info = data;
mutex_lock(&info->lock);
info->allowed = 0;
mutex_unlock(&info->lock);
dev_dbg(info->dev, "%s, irq: %d\n", __func__, irq);
set_charging_fsm(info);
return IRQ_HANDLED;
}
static irqreturn_t pm860x_done_handler(int irq, void *data)
{
struct pm860x_charger_info *info = data;
struct power_supply *psy;
union power_supply_propval val;
int ret;
int vbatt;
mutex_lock(&info->lock);
/* pre-charge done, will transimit to fast-charge stage */
if (info->state == FSM_PRECHARGE) {
info->allowed = 1;
goto out;
}
/*
* Fast charge done, delay to read
* the correct status of CHG_DET.
*/
mdelay(5);
info->allowed = 0;
psy = power_supply_get_by_name(pm860x_supplied_to[0]);
if (!psy)
goto out;
ret = psy->get_property(psy, POWER_SUPPLY_PROP_VOLTAGE_NOW, &val);
if (ret)
goto out;
vbatt = val.intval / 1000;
/*
* CHG_DONE interrupt is faster than CHG_DET interrupt when
* plug in/out usb, So we can not rely on info->online, we
* need check pm8607 status register to check usb is online
* or not, then we can decide it is real charge done
* automatically or it is triggered by usb plug out;
*/
ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2);
if (ret < 0)
goto out;
if (vbatt > CHARGE_THRESHOLD && ret & STATUS2_CHG)
psy->set_property(psy, POWER_SUPPLY_PROP_CHARGE_FULL, &val);
out:
mutex_unlock(&info->lock);
dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);
set_charging_fsm(info);
return IRQ_HANDLED;
}
static irqreturn_t pm860x_vbattery_handler(int irq, void *data)
{
struct pm860x_charger_info *info = data;
mutex_lock(&info->lock);
set_vbatt_threshold(info, 0, 0);
if (info->present && info->online)
info->allowed = 1;
else
info->allowed = 0;
mutex_unlock(&info->lock);
dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);
set_charging_fsm(info);
return IRQ_HANDLED;
}
static irqreturn_t pm860x_vchg_handler(int irq, void *data)
{
struct pm860x_charger_info *info = data;
int vchg = 0;
if (info->present)
goto out;
measure_vchg(info, &vchg);
mutex_lock(&info->lock);
if (!info->online) {
int status;
/* check if over-temp on pm8606 or not */
status = pm860x_reg_read(info->i2c_8606, PM8606_FLAGS);
if (status & OVER_TEMP_FLAG) {
/* clear over temp flag and set auto recover */
pm860x_set_bits(info->i2c_8606, PM8606_FLAGS,
OVER_TEMP_FLAG, OVER_TEMP_FLAG);
pm860x_set_bits(info->i2c_8606,
PM8606_VSYS,
OVTEMP_AUTORECOVER,
OVTEMP_AUTORECOVER);
dev_dbg(info->dev,
"%s, pm8606 over-temp occure\n", __func__);
}
}
if (vchg > VCHG_NORMAL_CHECK) {
set_vchg_threshold(info, VCHG_OVP_LOW, 0);
info->allowed = 0;
dev_dbg(info->dev,
"%s,pm8607 over-vchg occure,vchg = %dmv\n",
__func__, vchg);
} else if (vchg < VCHG_OVP_LOW) {
set_vchg_threshold(info, VCHG_NORMAL_LOW,
VCHG_NORMAL_HIGH);
info->allowed = 1;
dev_dbg(info->dev,
"%s,pm8607 over-vchg recover,vchg = %dmv\n",
__func__, vchg);
}
mutex_unlock(&info->lock);
dev_dbg(info->dev, "%s, Allowed: %d\n", __func__, info->allowed);
set_charging_fsm(info);
out:
return IRQ_HANDLED;
}
static int pm860x_usb_get_prop(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct pm860x_charger_info *info =
dev_get_drvdata(psy->dev->parent);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
if (info->state == FSM_FASTCHARGE ||
info->state == FSM_PRECHARGE)
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = info->online;
break;
default:
return -ENODEV;
}
return 0;
}
static enum power_supply_property pm860x_usb_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_ONLINE,
};
static int pm860x_init_charger(struct pm860x_charger_info *info)
{
int ret;
ret = pm860x_reg_read(info->i2c, PM8607_STATUS_2);
if (ret < 0)
return ret;
mutex_lock(&info->lock);
info->state = FSM_INIT;
if (ret & STATUS2_CHG) {
info->online = 1;
info->allowed = 1;
} else {
info->online = 0;
info->allowed = 0;
}
mutex_unlock(&info->lock);
set_charging_fsm(info);
return 0;
}
static struct pm860x_irq_desc {
const char *name;
irqreturn_t (*handler)(int irq, void *data);
} pm860x_irq_descs[] = {
{ "usb supply detect", pm860x_charger_handler },
{ "charge done", pm860x_done_handler },
{ "charge timeout", pm860x_exception_handler },
{ "charge fault", pm860x_exception_handler },
{ "temperature", pm860x_temp_handler },
{ "vbatt", pm860x_vbattery_handler },
{ "vchg", pm860x_vchg_handler },
};
static __devinit int pm860x_charger_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
struct pm860x_charger_info *info;
int ret;
int count;
int i;
int j;
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
count = pdev->num_resources;
for (i = 0, j = 0; i < count; i++) {
info->irq[j] = platform_get_irq(pdev, i);
if (info->irq[j] < 0)
continue;
j++;
}
info->irq_nums = j;
info->chip = chip;
info->i2c =
(chip->id == CHIP_PM8607) ? chip->client : chip->companion;
info->i2c_8606 =
(chip->id == CHIP_PM8607) ? chip->companion : chip->client;
if (!info->i2c_8606) {
dev_err(&pdev->dev, "Missed I2C address of 88PM8606!\n");
ret = -EINVAL;
goto out;
}
info->dev = &pdev->dev;
/* set init value for the case we are not using battery */
set_vchg_threshold(info, VCHG_NORMAL_LOW, VCHG_OVP_LOW);
mutex_init(&info->lock);
platform_set_drvdata(pdev, info);
info->usb.name = "usb";
info->usb.type = POWER_SUPPLY_TYPE_USB;
info->usb.supplied_to = pm860x_supplied_to;
info->usb.num_supplicants = ARRAY_SIZE(pm860x_supplied_to);
info->usb.properties = pm860x_usb_props;
info->usb.num_properties = ARRAY_SIZE(pm860x_usb_props);
info->usb.get_property = pm860x_usb_get_prop;
ret = power_supply_register(&pdev->dev, &info->usb);
if (ret)
goto out;
pm860x_init_charger(info);
for (i = 0; i < ARRAY_SIZE(info->irq); i++) {
ret = request_threaded_irq(info->irq[i], NULL,
pm860x_irq_descs[i].handler,
IRQF_ONESHOT, pm860x_irq_descs[i].name, info);
if (ret < 0) {
dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
info->irq[i], ret);
goto out_irq;
}
}
return 0;
out_irq:
while (--i >= 0)
free_irq(info->irq[i], info);
out:
kfree(info);
return ret;
}
static int __devexit pm860x_charger_remove(struct platform_device *pdev)
{
struct pm860x_charger_info *info = platform_get_drvdata(pdev);
int i;
platform_set_drvdata(pdev, NULL);
power_supply_unregister(&info->usb);
free_irq(info->irq[0], info);
for (i = 0; i < info->irq_nums; i++)
free_irq(info->irq[i], info);
kfree(info);
return 0;
}
static struct platform_driver pm860x_charger_driver = {
.driver = {
.name = "88pm860x-charger",
.owner = THIS_MODULE,
},
.probe = pm860x_charger_probe,
.remove = __devexit_p(pm860x_charger_remove),
};
module_platform_driver(pm860x_charger_driver);
MODULE_DESCRIPTION("Marvell 88PM860x Charger driver");
MODULE_LICENSE("GPL");

20
drivers/power/Kconfig
View File

@ -69,6 +69,12 @@ config TEST_POWER
help
This driver is used for testing. It's safe to say M here.
config BATTERY_88PM860X
tristate "Marvell 88PM860x battery driver"
depends on MFD_88PM860X
help
Say Y here to enable battery monitor for Marvell 88PM860x chip.
config BATTERY_DS2760
tristate "DS2760 battery driver (HP iPAQ & others)"
depends on W1 && W1_SLAVE_DS2760
@ -174,7 +180,6 @@ config BATTERY_DA9030
config BATTERY_DA9052
tristate "Dialog DA9052 Battery"
depends on PMIC_DA9052
depends on BROKEN
help
Say Y here to enable support for batteries charger integrated into
DA9052 PMIC.
@ -210,6 +215,12 @@ config BATTERY_S3C_ADC
help
Say Y here to enable support for iPAQ h1930/h1940/rx1950 battery
config CHARGER_88PM860X
tristate "Marvell 88PM860x Charger driver"
depends on MFD_88PM860X && BATTERY_88PM860X
help
Say Y here to enable charger for Marvell 88PM860x chip.
config CHARGER_PCF50633
tristate "NXP PCF50633 MBC"
depends on MFD_PCF50633
@ -262,6 +273,13 @@ config CHARGER_LP8727
help
Say Y here to enable support for LP8727 Charger Driver.
config CHARGER_LP8788
tristate "TI LP8788 charger driver"
depends on MFD_LP8788
depends on LP8788_ADC
help
Say Y to enable support for the LP8788 linear charger.
config CHARGER_GPIO
tristate "GPIO charger"
depends on GPIOLIB

3
drivers/power/Makefile
View File

@ -15,6 +15,7 @@ obj-$(CONFIG_WM831X_POWER) += wm831x_power.o
obj-$(CONFIG_WM8350_POWER) += wm8350_power.o
obj-$(CONFIG_TEST_POWER) += test_power.o
obj-$(CONFIG_BATTERY_88PM860X) += 88pm860x_battery.o
obj-$(CONFIG_BATTERY_DS2760) += ds2760_battery.o
obj-$(CONFIG_BATTERY_DS2780) += ds2780_battery.o
obj-$(CONFIG_BATTERY_DS2781) += ds2781_battery.o
@ -32,6 +33,7 @@ obj-$(CONFIG_BATTERY_MAX17040) += max17040_battery.o
obj-$(CONFIG_BATTERY_MAX17042) += max17042_battery.o
obj-$(CONFIG_BATTERY_Z2) += z2_battery.o
obj-$(CONFIG_BATTERY_S3C_ADC) += s3c_adc_battery.o
obj-$(CONFIG_CHARGER_88PM860X) += 88pm860x_charger.o
obj-$(CONFIG_CHARGER_PCF50633) += pcf50633-charger.o
obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
@ -40,6 +42,7 @@ obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
obj-$(CONFIG_CHARGER_MAX8903) += max8903_charger.o
obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
obj-$(CONFIG_CHARGER_LP8727) += lp8727_charger.o
obj-$(CONFIG_CHARGER_LP8788) += lp8788-charger.o
obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
obj-$(CONFIG_CHARGER_MANAGER) += charger-manager.o
obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o

1
drivers/power/ab8500_btemp.c
View File

@ -1014,6 +1014,7 @@ static int __devinit ab8500_btemp_probe(struct platform_device *pdev)
create_singlethread_workqueue("ab8500_btemp_wq");
if (di->btemp_wq == NULL) {
dev_err(di->dev, "failed to create work queue\n");
ret = -ENOMEM;
goto free_device_info;
}

1
drivers/power/ab8500_charger.c
View File

@ -2614,6 +2614,7 @@ static int __devinit ab8500_charger_probe(struct platform_device *pdev)
create_singlethread_workqueue("ab8500_charger_wq");
if (di->charger_wq == NULL) {
dev_err(di->dev, "failed to create work queue\n");
ret = -ENOMEM;
goto free_device_info;
}

1
drivers/power/ab8500_fg.c
View File

@ -2506,6 +2506,7 @@ static int __devinit ab8500_fg_probe(struct platform_device *pdev)
di->fg_wq = create_singlethread_workqueue("ab8500_fg_wq");
if (di->fg_wq == NULL) {
dev_err(di->dev, "failed to create work queue\n");
ret = -ENOMEM;
goto free_device_info;
}

3
drivers/power/bq27x00_battery.c
View File

@ -814,7 +814,8 @@ static int bq27x00_battery_probe(struct i2c_client *client,
di->bat.name = name;
di->bus.read = &bq27x00_read_i2c;
if (bq27x00_powersupply_init(di))
retval = bq27x00_powersupply_init(di);
if (retval)
goto batt_failed_3;
i2c_set_clientdata(client, di);

434
drivers/power/charger-manager.c
View File

@ -22,6 +22,7 @@
#include <linux/platform_device.h>
#include <linux/power/charger-manager.h>
#include <linux/regulator/consumer.h>
#include <linux/sysfs.h>
static const char * const default_event_names[] = {
[CM_EVENT_UNKNOWN] = "Unknown",
@ -226,6 +227,58 @@ static bool is_charging(struct charger_manager *cm)
return charging;
}
/**
* is_full_charged - Returns true if the battery is fully charged.
* @cm: the Charger Manager representing the battery.
*/
static bool is_full_charged(struct charger_manager *cm)
{
struct charger_desc *desc = cm->desc;
union power_supply_propval val;
int ret = 0;
int uV;
/* If there is no battery, it cannot be charged */
if (!is_batt_present(cm)) {
val.intval = 0;
goto out;
}
if (cm->fuel_gauge && desc->fullbatt_full_capacity > 0) {
/* Not full if capacity of fuel gauge isn't full */
ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
POWER_SUPPLY_PROP_CHARGE_FULL, &val);
if (!ret && val.intval > desc->fullbatt_full_capacity) {
val.intval = 1;
goto out;
}
}
/* Full, if it's over the fullbatt voltage */
if (desc->fullbatt_uV > 0) {
ret = get_batt_uV(cm, &uV);
if (!ret && uV >= desc->fullbatt_uV) {
val.intval = 1;
goto out;
}
}
/* Full, if the capacity is more than fullbatt_soc */
if (cm->fuel_gauge && desc->fullbatt_soc > 0) {
ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
POWER_SUPPLY_PROP_CAPACITY, &val);
if (!ret && val.intval >= desc->fullbatt_soc) {
val.intval = 1;
goto out;
}
}
val.intval = 0;
out:
return val.intval ? true : false;
}
/**
* is_polling_required - Return true if need to continue polling for this CM.
* @cm: the Charger Manager representing the battery.
@ -271,9 +324,45 @@ static int try_charger_enable(struct charger_manager *cm, bool enable)
if (enable) {
if (cm->emergency_stop)
return -EAGAIN;
for (i = 0 ; i < desc->num_charger_regulators ; i++)
regulator_enable(desc->charger_regulators[i].consumer);
/*
* Save start time of charging to limit
* maximum possible charging time.
*/
cm->charging_start_time = ktime_to_ms(ktime_get());
cm->charging_end_time = 0;
for (i = 0 ; i < desc->num_charger_regulators ; i++) {
if (desc->charger_regulators[i].externally_control)
continue;
err = regulator_enable(desc->charger_regulators[i].consumer);
if (err < 0) {
dev_warn(cm->dev,
"Cannot enable %s regulator\n",
desc->charger_regulators[i].regulator_name);
}
}
} else {
/*
* Save end time of charging to maintain fully charged state
* of battery after full-batt.
*/
cm->charging_start_time = 0;
cm->charging_end_time = ktime_to_ms(ktime_get());
for (i = 0 ; i < desc->num_charger_regulators ; i++) {
if (desc->charger_regulators[i].externally_control)
continue;
err = regulator_disable(desc->charger_regulators[i].consumer);
if (err < 0) {
dev_warn(cm->dev,
"Cannot disable %s regulator\n",
desc->charger_regulators[i].regulator_name);
}
}
/*
* Abnormal battery state - Stop charging forcibly,
* even if charger was enabled at the other places
@ -400,17 +489,64 @@ static void fullbatt_vchk(struct work_struct *work)
return;
}
diff = cm->fullbatt_vchk_uV;
diff = desc->fullbatt_uV;
diff -= batt_uV;
dev_dbg(cm->dev, "VBATT dropped %duV after full-batt.\n", diff);
dev_info(cm->dev, "VBATT dropped %duV after full-batt.\n", diff);
if (diff > desc->fullbatt_vchkdrop_uV) {
try_charger_restart(cm);
uevent_notify(cm, "Recharge");
uevent_notify(cm, "Recharging");
}
}
/**
* check_charging_duration - Monitor charging/discharging duration
* @cm: the Charger Manager representing the battery.
*
* If whole charging duration exceed 'charging_max_duration_ms',
* cm stop charging to prevent overcharge/overheat. If discharging
* duration exceed 'discharging _max_duration_ms', charger cable is
* attached, after full-batt, cm start charging to maintain fully
* charged state for battery.
*/
static int check_charging_duration(struct charger_manager *cm)
{
struct charger_desc *desc = cm->desc;
u64 curr = ktime_to_ms(ktime_get());
u64 duration;
int ret = false;
if (!desc->charging_max_duration_ms &&
!desc->discharging_max_duration_ms)
return ret;
if (cm->charger_enabled) {
duration = curr - cm->charging_start_time;
if (duration > desc->charging_max_duration_ms) {
dev_info(cm->dev, "Charging duration exceed %lldms",
desc->charging_max_duration_ms);
uevent_notify(cm, "Discharging");
try_charger_enable(cm, false);
ret = true;
}
} else if (is_ext_pwr_online(cm) && !cm->charger_enabled) {
duration = curr - cm->charging_end_time;
if (duration > desc->charging_max_duration_ms &&
is_ext_pwr_online(cm)) {
dev_info(cm->dev, "DisCharging duration exceed %lldms",
desc->discharging_max_duration_ms);
uevent_notify(cm, "Recharing");
try_charger_enable(cm, true);
ret = true;
}
}
return ret;
}
/**
* _cm_monitor - Monitor the temperature and return true for exceptions.
* @cm: the Charger Manager representing the battery.
@ -426,10 +562,14 @@ static bool _cm_monitor(struct charger_manager *cm)
dev_dbg(cm->dev, "monitoring (%2.2d.%3.3dC)\n",
cm->last_temp_mC / 1000, cm->last_temp_mC % 1000);
/* It has been stopped or charging already */
if (!!temp == !!cm->emergency_stop)
/* It has been stopped already */
if (temp && cm->emergency_stop)
return false;
/*
* Check temperature whether overheat or cold.
* If temperature is out of range normal state, stop charging.
*/
if (temp) {
cm->emergency_stop = temp;
if (!try_charger_enable(cm, false)) {
@ -438,10 +578,41 @@ static bool _cm_monitor(struct charger_manager *cm)
else
uevent_notify(cm, "COLD");
}
/*
* Check whole charging duration and discharing duration
* after full-batt.
*/
} else if (!cm->emergency_stop && check_charging_duration(cm)) {
dev_dbg(cm->dev,
"Charging/Discharging duration is out of range");
/*
* Check dropped voltage of battery. If battery voltage is more
* dropped than fullbatt_vchkdrop_uV after fully charged state,
* charger-manager have to recharge battery.
*/
} else if (!cm->emergency_stop && is_ext_pwr_online(cm) &&
!cm->charger_enabled) {
fullbatt_vchk(&cm->fullbatt_vchk_work.work);
/*
* Check whether fully charged state to protect overcharge
* if charger-manager is charging for battery.
*/
} else if (!cm->emergency_stop && is_full_charged(cm) &&
cm->charger_enabled) {
dev_info(cm->dev, "EVENT_HANDLE: Battery Fully Charged.\n");
uevent_notify(cm, default_event_names[CM_EVENT_BATT_FULL]);
try_charger_enable(cm, false);
fullbatt_vchk(&cm->fullbatt_vchk_work.work);
} else {
cm->emergency_stop = 0;
if (!try_charger_enable(cm, true))
uevent_notify(cm, "CHARGING");
if (is_ext_pwr_online(cm)) {
if (!try_charger_enable(cm, true))
uevent_notify(cm, "CHARGING");
}
}
return true;
@ -701,47 +872,10 @@ static int charger_get_property(struct power_supply *psy,
val->intval = 0;
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
if (cm->fuel_gauge) {
if (cm->fuel_gauge->get_property(cm->fuel_gauge,
POWER_SUPPLY_PROP_CHARGE_FULL, val) == 0)
break;
}
if (is_ext_pwr_online(cm)) {
/* Not full if it's charging. */
if (is_charging(cm)) {
val->intval = 0;
break;
}
/*
* Full if it's powered but not charging andi
* not forced stop by emergency
*/
if (!cm->emergency_stop) {
val->intval = 1;
break;
}
}
/* Full if it's over the fullbatt voltage */
ret = get_batt_uV(cm, &uV);
if (!ret && desc->fullbatt_uV > 0 && uV >= desc->fullbatt_uV &&
!is_charging(cm)) {
if (is_full_charged(cm))
val->intval = 1;
break;
}
/* Full if the cap is 100 */
if (cm->fuel_gauge) {
ret = cm->fuel_gauge->get_property(cm->fuel_gauge,
POWER_SUPPLY_PROP_CAPACITY, val);
if (!ret && val->intval >= 100 && !is_charging(cm)) {
val->intval = 1;
break;
}
}
val->intval = 0;
else
val->intval = 0;
ret = 0;
break;
case POWER_SUPPLY_PROP_CHARGE_NOW:
@ -1031,7 +1165,26 @@ static int charger_extcon_notifier(struct notifier_block *self,
struct charger_cable *cable =
container_of(self, struct charger_cable, nb);
/*
* The newly state of charger cable.
* If cable is attached, cable->attached is true.
*/
cable->attached = event;
/*
* Setup monitoring to check battery state
* when charger cable is attached.
*/
if (cable->attached && is_polling_required(cable->cm)) {
if (work_pending(&setup_polling))
cancel_work_sync(&setup_polling);
schedule_work(&setup_polling);
}
/*
* Setup work for controlling charger(regulator)
* according to charger cable.
*/
schedule_work(&cable->wq);
return NOTIFY_DONE;
@ -1068,12 +1221,101 @@ static int charger_extcon_init(struct charger_manager *cm,
return ret;
}
/* help function of sysfs node to control charger(regulator) */
static ssize_t charger_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct charger_regulator *charger
= container_of(attr, struct charger_regulator, attr_name);
return sprintf(buf, "%s\n", charger->regulator_name);
}
static ssize_t charger_state_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct charger_regulator *charger
= container_of(attr, struct charger_regulator, attr_state);
int state = 0;
if (!charger->externally_control)
state = regulator_is_enabled(charger->consumer);
return sprintf(buf, "%s\n", state ? "enabled" : "disabled");
}
static ssize_t charger_externally_control_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct charger_regulator *charger = container_of(attr,
struct charger_regulator, attr_externally_control);
return sprintf(buf, "%d\n", charger->externally_control);
}
static ssize_t charger_externally_control_store(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t count)
{
struct charger_regulator *charger
= container_of(attr, struct charger_regulator,
attr_externally_control);
struct charger_manager *cm = charger->cm;
struct charger_desc *desc = cm->desc;
int i;
int ret;
int externally_control;
int chargers_externally_control = 1;
ret = sscanf(buf, "%d", &externally_control);
if (ret == 0) {
ret = -EINVAL;
return ret;
}
if (!externally_control) {
charger->externally_control = 0;
return count;
}
for (i = 0; i < desc->num_charger_regulators; i++) {
if (&desc->charger_regulators[i] != charger &&
!desc->charger_regulators[i].externally_control) {
/*
* At least, one charger is controlled by
* charger-manager
*/
chargers_externally_control = 0;
break;
}
}
if (!chargers_externally_control) {
if (cm->charger_enabled) {
try_charger_enable(charger->cm, false);
charger->externally_control = externally_control;
try_charger_enable(charger->cm, true);
} else {
charger->externally_control = externally_control;
}
} else {
dev_warn(cm->dev,
"'%s' regulator should be controlled "
"in charger-manager because charger-manager "
"must need at least one charger for charging\n",
charger->regulator_name);
}
return count;
}
static int charger_manager_probe(struct platform_device *pdev)
{
struct charger_desc *desc = dev_get_platdata(&pdev->dev);
struct charger_manager *cm;
int ret = 0, i = 0;
int j = 0;
int chargers_externally_control = 1;
union power_supply_propval val;
if (g_desc && !rtc_dev && g_desc->rtc_name) {
@ -1125,6 +1367,15 @@ static int charger_manager_probe(struct platform_device *pdev)
desc->fullbatt_vchkdrop_ms = 0;
desc->fullbatt_vchkdrop_uV = 0;
}
if (desc->fullbatt_soc == 0) {
dev_info(&pdev->dev, "Ignoring full-battery soc(state of"
" charge) threshold as it is not"
" supplied.");
}
if (desc->fullbatt_full_capacity == 0) {
dev_info(&pdev->dev, "Ignoring full-battery full capacity"
" threshold as it is not supplied.");
}
if (!desc->charger_regulators || desc->num_charger_regulators < 1) {
ret = -EINVAL;
@ -1182,6 +1433,15 @@ static int charger_manager_probe(struct platform_device *pdev)
goto err_chg_stat;
}
if (!desc->charging_max_duration_ms ||
!desc->discharging_max_duration_ms) {
dev_info(&pdev->dev, "Cannot limit charging duration "
"checking mechanism to prevent overcharge/overheat "
"and control discharging duration");
desc->charging_max_duration_ms = 0;
desc->discharging_max_duration_ms = 0;
}
platform_set_drvdata(pdev, cm);
memcpy(&cm->charger_psy, &psy_default, sizeof(psy_default));
@ -1245,6 +1505,8 @@ static int charger_manager_probe(struct platform_device *pdev)
for (i = 0 ; i < desc->num_charger_regulators ; i++) {
struct charger_regulator *charger
= &desc->charger_regulators[i];
char buf[11];
char *str;
charger->consumer = regulator_get(&pdev->dev,
charger->regulator_name);
@ -1254,6 +1516,7 @@ static int charger_manager_probe(struct platform_device *pdev)
ret = -EINVAL;
goto err_chg_get;
}
charger->cm = cm;
for (j = 0 ; j < charger->num_cables ; j++) {
struct charger_cable *cable = &charger->cables[j];
@ -1267,6 +1530,71 @@ static int charger_manager_probe(struct platform_device *pdev)
cable->charger = charger;
cable->cm = cm;
}
/* Create sysfs entry to control charger(regulator) */
snprintf(buf, 10, "charger.%d", i);
str = kzalloc(sizeof(char) * (strlen(buf) + 1), GFP_KERNEL);
if (!str) {
for (i--; i >= 0; i--) {
charger = &desc->charger_regulators[i];
kfree(charger->attr_g.name);
}
ret = -ENOMEM;
goto err_extcon;
}
strcpy(str, buf);
charger->attrs[0] = &charger->attr_name.attr;
charger->attrs[1] = &charger->attr_state.attr;
charger->attrs[2] = &charger->attr_externally_control.attr;
charger->attrs[3] = NULL;
charger->attr_g.name = str;
charger->attr_g.attrs = charger->attrs;
sysfs_attr_init(&charger->attr_name.attr);
charger->attr_name.attr.name = "name";
charger->attr_name.attr.mode = 0444;
charger->attr_name.show = charger_name_show;
sysfs_attr_init(&charger->attr_state.attr);
charger->attr_state.attr.name = "state";
charger->attr_state.attr.mode = 0444;
charger->attr_state.show = charger_state_show;
sysfs_attr_init(&charger->attr_externally_control.attr);
charger->attr_externally_control.attr.name
= "externally_control";
charger->attr_externally_control.attr.mode = 0644;
charger->attr_externally_control.show
= charger_externally_control_show;
charger->attr_externally_control.store
= charger_externally_control_store;
if (!desc->charger_regulators[i].externally_control ||
!chargers_externally_control) {
chargers_externally_control = 0;
}
dev_info(&pdev->dev, "'%s' regulator's externally_control"
"is %d\n", charger->regulator_name,
charger->externally_control);
ret = sysfs_create_group(&cm->charger_psy.dev->kobj,
&charger->attr_g);
if (ret < 0) {
dev_info(&pdev->dev, "Cannot create sysfs entry"
"of %s regulator\n",
charger->regulator_name);
}
}
if (chargers_externally_control) {
dev_err(&pdev->dev, "Cannot register regulator because "
"charger-manager must need at least "
"one charger for charging battery\n");
ret = -EINVAL;
goto err_chg_enable;
}
ret = try_charger_enable(cm, true);
@ -1292,6 +1620,14 @@ static int charger_manager_probe(struct platform_device *pdev)
return 0;
err_chg_enable:
for (i = 0; i < desc->num_charger_regulators; i++) {
struct charger_regulator *charger;
charger = &desc->charger_regulators[i];
sysfs_remove_group(&cm->charger_psy.dev->kobj,
&charger->attr_g);
kfree(charger->attr_g.name);
}
err_extcon:
for (i = 0 ; i < desc->num_charger_regulators ; i++) {
struct charger_regulator *charger

4
drivers/power/da9030_battery.c
View File

@ -187,8 +187,8 @@ static const struct file_operations bat_debug_fops = {
static struct dentry *da9030_bat_create_debugfs(struct da9030_charger *charger)
{
charger->debug_file = debugfs_create_file("charger", 0666, 0, charger,
&bat_debug_fops);
charger->debug_file = debugfs_create_file("charger", 0666, NULL,
charger, &bat_debug_fops);
return charger->debug_file;
}

11
drivers/power/da9052-battery.c
View File

@ -327,7 +327,7 @@ static int da9052_bat_interpolate(int vbat_lower, int vbat_upper,
return tmp;
}
unsigned char da9052_determine_vc_tbl_index(unsigned char adc_temp)
static unsigned char da9052_determine_vc_tbl_index(unsigned char adc_temp)
{
int i;
@ -345,6 +345,13 @@ unsigned char da9052_determine_vc_tbl_index(unsigned char adc_temp)
&& (adc_temp <= vc_tbl_ref[i]))
return i + 1;
}
/*
* For some reason authors of the driver didn't presume that we can
* end up here. It might be OK, but might be not, no one knows for
* sure. Go check your battery, is it on fire?
*/
WARN_ON(1);
return 0;
}
static int da9052_bat_read_capacity(struct da9052_battery *bat, int *capacity)
@ -616,7 +623,7 @@ static s32 __devinit da9052_bat_probe(struct platform_device *pdev)
return 0;
err:
for (; i >= 0; i--) {
while (--i >= 0) {
irq = platform_get_irq_byname(pdev, da9052_bat_irqs[i]);
free_irq(bat->da9052->irq_base + irq, bat);
}

28
drivers/power/ds2781_battery.c
View File

@ -755,11 +755,9 @@ static int __devinit ds2781_battery_probe(struct platform_device *pdev)
int ret = 0;
struct ds2781_device_info *dev_info;
dev_info = kzalloc(sizeof(*dev_info), GFP_KERNEL);
if (!dev_info) {
ret = -ENOMEM;
goto fail;
}
dev_info = devm_kzalloc(&pdev->dev, sizeof(*dev_info), GFP_KERNEL);
if (!dev_info)
return -ENOMEM;
platform_set_drvdata(pdev, dev_info);
@ -774,7 +772,7 @@ static int __devinit ds2781_battery_probe(struct platform_device *pdev)
ret = power_supply_register(&pdev->dev, &dev_info->bat);
if (ret) {
dev_err(dev_info->dev, "failed to register battery\n");
goto fail_free_info;
goto fail;
}
ret = sysfs_create_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);
@ -808,8 +806,6 @@ static int __devinit ds2781_battery_probe(struct platform_device *pdev)
sysfs_remove_group(&dev_info->bat.dev->kobj, &ds2781_attr_group);
fail_unregister:
power_supply_unregister(&dev_info->bat);
fail_free_info:
kfree(dev_info);
fail:
return ret;
}
@ -823,7 +819,6 @@ static int __devexit ds2781_battery_remove(struct platform_device *pdev)
power_supply_unregister(&dev_info->bat);
kfree(dev_info);
return 0;
}
@ -834,20 +829,7 @@ static struct platform_driver ds2781_battery_driver = {
.probe = ds2781_battery_probe,
.remove = __devexit_p(ds2781_battery_remove),
};
static int __init ds2781_battery_init(void)
{
return platform_driver_register(&ds2781_battery_driver);
}
static void __exit ds2781_battery_exit(void)
{
platform_driver_unregister(&ds2781_battery_driver);
}
module_init(ds2781_battery_init);
module_exit(ds2781_battery_exit);
module_platform_driver(ds2781_battery_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Renata Sayakhova <renata@oktetlabs.ru>");

360
drivers/power/lp8727_charger.c
View File

@ -17,61 +17,65 @@
#include <linux/power_supply.h>
#include <linux/platform_data/lp8727.h>
#define DEBOUNCE_MSEC 270
#define LP8788_NUM_INTREGS 2
#define DEFAULT_DEBOUNCE_MSEC 270
/* Registers */
#define CTRL1 0x1
#define CTRL2 0x2
#define SWCTRL 0x3
#define INT1 0x4
#define INT2 0x5
#define STATUS1 0x6
#define STATUS2 0x7
#define CHGCTRL2 0x9
#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 CP_EN (1 << 0)
#define ADC_EN (1 << 1)
#define ID200_EN (1 << 4)
#define LP8727_CP_EN BIT(0)
#define LP8727_ADC_EN BIT(1)
#define LP8727_ID200_EN BIT(4)
/* CTRL2 register */
#define CHGDET_EN (1 << 1)
#define INT_EN (1 << 6)
#define LP8727_CHGDET_EN BIT(1)
#define LP8727_INT_EN BIT(6)
/* SWCTRL register */
#define SW_DM1_DM (0x0 << 0)
#define SW_DM1_U1 (0x1 << 0)
#define SW_DM1_HiZ (0x7 << 0)
#define SW_DP2_DP (0x0 << 3)
#define SW_DP2_U2 (0x1 << 3)
#define SW_DP2_HiZ (0x7 << 3)
#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 IDNO (0xF << 0)
#define VBUS (1 << 4)
#define LP8727_IDNO (0xF << 0)
#define LP8727_VBUS BIT(4)
/* STATUS1 register */
#define CHGSTAT (3 << 4)
#define CHPORT (1 << 6)
#define DCPORT (1 << 7)
#define LP8727_CHGSTAT (3 << 4)
#define LP8727_CHPORT BIT(6)
#define LP8727_DCPORT BIT(7)
#define LP8727_STAT_EOC 0x30
/* STATUS2 register */
#define TEMP_STAT (3 << 5)
#define LP8727_TEMP_STAT (3 << 5)
#define LP8727_TEMP_SHIFT 5
/* CHGCTRL2 register */
#define LP8727_ICHG_SHIFT 4
enum lp8727_dev_id {
ID_NONE,
ID_TA,
ID_DEDICATED_CHG,
ID_USB_CHG,
ID_USB_DS,
ID_MAX,
LP8727_ID_NONE,
LP8727_ID_TA,
LP8727_ID_DEDICATED_CHG,
LP8727_ID_USB_CHG,
LP8727_ID_USB_DS,
LP8727_ID_MAX,
};
enum lp8727_chg_stat {
PRECHG,
CC,
CV,
EOC,
enum lp8727_die_temp {
LP8788_TEMP_75C,
LP8788_TEMP_95C,
LP8788_TEMP_115C,
LP8788_TEMP_135C,
};
struct lp8727_psy {
@ -84,12 +88,17 @@ struct lp8727_chg {
struct device *dev;
struct i2c_client *client;
struct mutex xfer_lock;
struct delayed_work work;
struct workqueue_struct *irqthread;
struct lp8727_platform_data *pdata;
struct lp8727_psy *psy;
struct lp8727_chg_param *chg_parm;
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)
@ -119,81 +128,84 @@ static int lp8727_write_byte(struct lp8727_chg *pchg, u8 reg, u8 data)
return ret;
}
static int lp8727_is_charger_attached(const char *name, int id)
static bool lp8727_is_charger_attached(const char *name, int id)
{
if (name) {
if (!strcmp(name, "ac"))
return (id == ID_TA || id == ID_DEDICATED_CHG) ? 1 : 0;
else if (!strcmp(name, "usb"))
return (id == ID_USB_CHG) ? 1 : 0;
}
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 >= ID_TA && id <= ID_USB_CHG) ? 1 : 0;
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];
val = ID200_EN | ADC_EN | CP_EN;
ret = lp8727_write_byte(pchg, CTRL1, val);
/* clear interrupts */
ret = lp8727_read_bytes(pchg, LP8727_INT1, intstat, LP8788_NUM_INTREGS);
if (ret)
return ret;
val = INT_EN | CHGDET_EN;
ret = lp8727_write_byte(pchg, CTRL2, val);
val = LP8727_ID200_EN | LP8727_ADC_EN | LP8727_CP_EN;
ret = lp8727_write_byte(pchg, LP8727_CTRL1, val);
if (ret)
return ret;
return 0;
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, STATUS1, &val);
return val & DCPORT;
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, STATUS1, &val);
return val & CHPORT;
lp8727_read_byte(pchg, LP8727_STATUS1, &val);
return val & LP8727_CHPORT;
}
static void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw)
static inline void lp8727_ctrl_switch(struct lp8727_chg *pchg, u8 sw)
{
lp8727_write_byte(pchg, SWCTRL, sw);
lp8727_write_byte(pchg, LP8727_SWCTRL, sw);
}
static void lp8727_id_detection(struct lp8727_chg *pchg, u8 id, int vbusin)
{
u8 devid = ID_NONE;
u8 swctrl = SW_DM1_HiZ | SW_DP2_HiZ;
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 = ID_TA;
pchg->chg_parm = &pchg->pdata->ac;
devid = LP8727_ID_TA;
pchg->chg_param = pdata ? pdata->ac : NULL;
break;
case 0xB:
if (lp8727_is_dedicated_charger(pchg)) {
pchg->chg_parm = &pchg->pdata->ac;
devid = ID_DEDICATED_CHG;
pchg->chg_param = pdata ? pdata->ac : NULL;
devid = LP8727_ID_DEDICATED_CHG;
} else if (lp8727_is_usb_charger(pchg)) {
pchg->chg_parm = &pchg->pdata->usb;
devid = ID_USB_CHG;
swctrl = SW_DM1_DM | SW_DP2_DP;
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 = ID_USB_DS;
swctrl = SW_DM1_DM | SW_DP2_DP;
devid = LP8727_ID_USB_DS;
swctrl = LP8727_SW_DM1_DM | LP8727_SW_DP2_DP;
}
break;
default:
devid = ID_NONE;
pchg->chg_parm = NULL;
devid = LP8727_ID_NONE;
pchg->chg_param = NULL;
break;
}
@ -205,24 +217,26 @@ static void lp8727_enable_chgdet(struct lp8727_chg *pchg)
{
u8 val;
lp8727_read_byte(pchg, CTRL2, &val);
val |= CHGDET_EN;
lp8727_write_byte(pchg, CTRL2, 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)
{
u8 intstat[2], idno, vbus;
struct lp8727_chg *pchg =
container_of(_work, struct lp8727_chg, work.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, INT1, intstat, 2)) {
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] & IDNO;
vbus = intstat[0] & VBUS;
idno = intstat[0] & LP8727_IDNO;
vbus = intstat[0] & LP8727_VBUS;
lp8727_id_detection(pchg, idno, vbus);
lp8727_enable_chgdet(pchg);
@ -235,29 +249,44 @@ static void lp8727_delayed_func(struct work_struct *_work)
static irqreturn_t lp8727_isr_func(int irq, void *ptr)
{
struct lp8727_chg *pchg = ptr;
unsigned long delay = msecs_to_jiffies(DEBOUNCE_MSEC);
queue_delayed_work(pchg->irqthread, &pchg->work, delay);
schedule_delayed_work(&pchg->work, pchg->debounce_jiffies);
return IRQ_HANDLED;
}
static int lp8727_intr_config(struct lp8727_chg *pchg)
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);
pchg->irqthread = create_singlethread_workqueue("lp8727-irqthd");
if (!pchg->irqthread) {
dev_err(pchg->dev, "can not create thread for lp8727\n");
return -ENOMEM;
if (irq <= 0) {
dev_warn(pchg->dev, "invalid irq number: %d\n", irq);
return 0;
}
return request_threaded_irq(pchg->client->irq,
NULL,
lp8727_isr_func,
IRQF_TRIGGER_FALLING,
"lp8727_irq",
pchg);
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[] = {
@ -283,54 +312,82 @@ static int lp8727_charger_get_property(struct power_supply *psy,
{
struct lp8727_chg *pchg = dev_get_drvdata(psy->dev->parent);
if (psp == POWER_SUPPLY_PROP_ONLINE)
val->intval = lp8727_is_charger_attached(psy->name,
pchg->devid);
if (psp != POWER_SUPPLY_PROP_ONLINE)
return -EINVAL;
val->intval = lp8727_is_charger_attached(psy->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->name, pchg->devid)) {
lp8727_read_byte(pchg, STATUS1, &read);
if (((read & CHGSTAT) >> 4) == EOC)
val->intval = POWER_SUPPLY_STATUS_FULL;
else
val->intval = POWER_SUPPLY_STATUS_CHARGING;
} else {
if (!lp8727_is_charger_attached(psy->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, STATUS2, &read);
read = (read & TEMP_STAT) >> 5;
if (read >= 0x1 && read <= 0x3)
val->intval = POWER_SUPPLY_HEALTH_OVERHEAT;
else
val->intval = POWER_SUPPLY_HEALTH_GOOD;
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 (pchg->pdata->get_batt_present)
if (!pdata)
return -EINVAL;
if (pdata->get_batt_present)
val->intval = pchg->pdata->get_batt_present();
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
if (pchg->pdata->get_batt_level)
if (!pdata)
return -EINVAL;
if (pdata->get_batt_level)
val->intval = pchg->pdata->get_batt_level();
break;
case POWER_SUPPLY_PROP_CAPACITY:
if (pchg->pdata->get_batt_capacity)
if (!pdata)
return -EINVAL;
if (pdata->get_batt_capacity)
val->intval = pchg->pdata->get_batt_capacity();
break;
case POWER_SUPPLY_PROP_TEMP:
if (pchg->pdata->get_batt_temp)
if (!pdata)
return -EINVAL;
if (pdata->get_batt_temp)
val->intval = pchg->pdata->get_batt_temp();
break;
default:
@ -343,16 +400,20 @@ static int lp8727_battery_get_property(struct power_supply *psy,
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;
u8 eoc_level, ichg;
if (lp8727_is_charger_attached(psy->name, pchg->devid)) {
if (pchg->chg_parm) {
eoc_level = pchg->chg_parm->eoc_level;
ichg = pchg->chg_parm->ichg;
val = (ichg << 4) | eoc_level;
lp8727_write_byte(pchg, CHGCTRL2, val);
}
/* skip if no charger exists */
if (!lp8727_is_charger_attached(psy->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);
}
}
@ -360,9 +421,9 @@ static int lp8727_register_psy(struct lp8727_chg *pchg)
{
struct lp8727_psy *psy;
psy = kzalloc(sizeof(*psy), GFP_KERNEL);
psy = devm_kzalloc(pchg->dev, sizeof(*psy), GFP_KERNEL);
if (!psy)
goto err_mem;
return -ENOMEM;
pchg->psy = psy;
@ -375,7 +436,7 @@ static int lp8727_register_psy(struct lp8727_chg *pchg)
psy->ac.num_supplicants = ARRAY_SIZE(battery_supplied_to);
if (power_supply_register(pchg->dev, &psy->ac))
goto err_psy;
goto err_psy_ac;
psy->usb.name = "usb";
psy->usb.type = POWER_SUPPLY_TYPE_USB;
@ -386,7 +447,7 @@ static int lp8727_register_psy(struct lp8727_chg *pchg)
psy->usb.num_supplicants = ARRAY_SIZE(battery_supplied_to);
if (power_supply_register(pchg->dev, &psy->usb))
goto err_psy;
goto err_psy_usb;
psy->batt.name = "main_batt";
psy->batt.type = POWER_SUPPLY_TYPE_BATTERY;
@ -396,14 +457,15 @@ static int lp8727_register_psy(struct lp8727_chg *pchg)
psy->batt.external_power_changed = lp8727_charger_changed;
if (power_supply_register(pchg->dev, &psy->batt))
goto err_psy;
goto err_psy_batt;
return 0;
err_mem:
return -ENOMEM;
err_psy:
kfree(psy);
err_psy_batt:
power_supply_unregister(&psy->usb);
err_psy_usb:
power_supply_unregister(&psy->ac);
err_psy_ac:
return -EPERM;
}
@ -417,7 +479,6 @@ static void lp8727_unregister_psy(struct lp8727_chg *pchg)
power_supply_unregister(&psy->ac);
power_supply_unregister(&psy->usb);
power_supply_unregister(&psy->batt);
kfree(psy);
}
static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
@ -428,7 +489,7 @@ static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
return -EIO;
pchg = kzalloc(sizeof(*pchg), GFP_KERNEL);
pchg = devm_kzalloc(&cl->dev, sizeof(*pchg), GFP_KERNEL);
if (!pchg)
return -ENOMEM;
@ -442,37 +503,31 @@ static int lp8727_probe(struct i2c_client *cl, const struct i2c_device_id *id)
ret = lp8727_init_device(pchg);
if (ret) {
dev_err(pchg->dev, "i2c communication err: %d", ret);
goto error;
}
ret = lp8727_intr_config(pchg);
if (ret) {
dev_err(pchg->dev, "irq handler err: %d", ret);
goto error;
return ret;
}
ret = lp8727_register_psy(pchg);
if (ret) {
dev_err(pchg->dev, "power supplies register err: %d", ret);
goto error;
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;
error:
kfree(pchg);
return ret;
}
static int __devexit lp8727_remove(struct i2c_client *cl)
{
struct lp8727_chg *pchg = i2c_get_clientdata(cl);
lp8727_release_irq(pchg);
lp8727_unregister_psy(pchg);
free_irq(pchg->client->irq, pchg);
flush_workqueue(pchg->irqthread);
destroy_workqueue(pchg->irqthread);
kfree(pchg);
return 0;
}
@ -493,6 +548,5 @@ static struct i2c_driver lp8727_driver = {
module_i2c_driver(lp8727_driver);
MODULE_DESCRIPTION("TI/National Semiconductor LP8727 charger driver");
MODULE_AUTHOR("Woogyom Kim <milo.kim@ti.com>, "
"Daniel Jeong <daniel.jeong@ti.com>");
MODULE_AUTHOR("Milo Kim <milo.kim@ti.com>, Daniel Jeong <daniel.jeong@ti.com>");
MODULE_LICENSE("GPL");

795
drivers/power/lp8788-charger.c Normal file
View File

@ -0,0 +1,795 @@
/*
* TI LP8788 MFD - battery charger driver
*
* Copyright 2012 Texas Instruments
*
* Author: Milo(Woogyom) Kim <milo.kim@ti.com>
*
* 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/err.h>
#include <linux/iio/consumer.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
#include <linux/mfd/lp8788.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
/* register address */
#define LP8788_CHG_STATUS 0x07
#define LP8788_CHG_IDCIN 0x13
#define LP8788_CHG_IBATT 0x14
#define LP8788_CHG_VTERM 0x15
#define LP8788_CHG_EOC 0x16
/* mask/shift bits */
#define LP8788_CHG_INPUT_STATE_M 0x03 /* Addr 07h */
#define LP8788_CHG_STATE_M 0x3C
#define LP8788_CHG_STATE_S 2
#define LP8788_NO_BATT_M BIT(6)
#define LP8788_BAD_BATT_M BIT(7)
#define LP8788_CHG_IBATT_M 0x1F /* Addr 14h */
#define LP8788_CHG_VTERM_M 0x0F /* Addr 15h */
#define LP8788_CHG_EOC_LEVEL_M 0x30 /* Addr 16h */
#define LP8788_CHG_EOC_LEVEL_S 4
#define LP8788_CHG_EOC_TIME_M 0x0E
#define LP8788_CHG_EOC_TIME_S 1
#define LP8788_CHG_EOC_MODE_M BIT(0)
#define LP8788_CHARGER_NAME "charger"
#define LP8788_BATTERY_NAME "main_batt"
#define LP8788_CHG_START 0x11
#define LP8788_CHG_END 0x1C
#define LP8788_BUF_SIZE 40
#define LP8788_ISEL_MAX 23
#define LP8788_ISEL_STEP 50
#define LP8788_VTERM_MIN 4100
#define LP8788_VTERM_STEP 25
#define LP8788_MAX_BATT_CAPACITY 100
#define LP8788_MAX_CHG_IRQS 11
enum lp8788_charging_state {
LP8788_OFF,
LP8788_WARM_UP,
LP8788_LOW_INPUT = 0x3,
LP8788_PRECHARGE,
LP8788_CC,
LP8788_CV,
LP8788_MAINTENANCE,
LP8788_BATTERY_FAULT,
LP8788_SYSTEM_SUPPORT = 0xC,
LP8788_HIGH_CURRENT = 0xF,
LP8788_MAX_CHG_STATE,
};
enum lp8788_charger_adc_sel {
LP8788_VBATT,
LP8788_BATT_TEMP,
LP8788_NUM_CHG_ADC,
};
enum lp8788_charger_input_state {
LP8788_SYSTEM_SUPPLY = 1,
LP8788_FULL_FUNCTION,
};
/*
* struct lp8788_chg_irq
* @which : lp8788 interrupt id
* @virq : Linux IRQ number from irq_domain
*/
struct lp8788_chg_irq {
enum lp8788_int_id which;
int virq;
};
/*
* struct lp8788_charger
* @lp : used for accessing the registers of mfd lp8788 device
* @charger : power supply driver for the battery charger
* @battery : power supply driver for the battery
* @charger_work : work queue for charger input interrupts
* @chan : iio channels for getting adc values
* eg) battery voltage, capacity and temperature
* @irqs : charger dedicated interrupts
* @num_irqs : total numbers of charger interrupts
* @pdata : charger platform specific data
*/
struct lp8788_charger {
struct lp8788 *lp;
struct power_supply charger;
struct power_supply battery;
struct work_struct charger_work;
struct iio_channel *chan[LP8788_NUM_CHG_ADC];
struct lp8788_chg_irq irqs[LP8788_MAX_CHG_IRQS];
int num_irqs;
struct lp8788_charger_platform_data *pdata;
};
static char *battery_supplied_to[] = {
LP8788_BATTERY_NAME,
};
static enum power_supply_property lp8788_charger_prop[] = {
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_CURRENT_MAX,
};
static enum power_supply_property lp8788_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_CONSTANT_CHARGE_CURRENT,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
POWER_SUPPLY_PROP_TEMP,
};
static bool lp8788_is_charger_detected(struct lp8788_charger *pchg)
{
u8 data;
lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
data &= LP8788_CHG_INPUT_STATE_M;
return data == LP8788_SYSTEM_SUPPLY || data == LP8788_FULL_FUNCTION;
}
static int lp8788_charger_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct lp8788_charger *pchg = dev_get_drvdata(psy->dev->parent);
u8 read;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = lp8788_is_charger_detected(pchg);
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
lp8788_read_byte(pchg->lp, LP8788_CHG_IDCIN, &read);
val->intval = LP8788_ISEL_STEP *
(min_t(int, read, LP8788_ISEL_MAX) + 1);
break;
default:
return -EINVAL;
}
return 0;
}
static int lp8788_get_battery_status(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
enum lp8788_charging_state state;
u8 data;
int ret;
ret = lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
if (ret)
return ret;
state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
switch (state) {
case LP8788_OFF:
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
break;
case LP8788_PRECHARGE:
case LP8788_CC:
case LP8788_CV:
case LP8788_HIGH_CURRENT:
val->intval = POWER_SUPPLY_STATUS_CHARGING;
break;
case LP8788_MAINTENANCE:
val->intval = POWER_SUPPLY_STATUS_FULL;
break;
default:
val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING;
break;
}
return 0;
}
static int lp8788_get_battery_health(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
u8 data;
int ret;
ret = lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
if (ret)
return ret;
if (data & LP8788_NO_BATT_M)
val->intval = POWER_SUPPLY_HEALTH_UNSPEC_FAILURE;
else if (data & LP8788_BAD_BATT_M)
val->intval = POWER_SUPPLY_HEALTH_DEAD;
else
val->intval = POWER_SUPPLY_HEALTH_GOOD;
return 0;
}
static int lp8788_get_battery_present(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
u8 data;
int ret;
ret = lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
if (ret)
return ret;
val->intval = !(data & LP8788_NO_BATT_M);
return 0;
}
static int lp8788_get_vbatt_adc(struct lp8788_charger *pchg,
unsigned int *result)
{
struct iio_channel *channel = pchg->chan[LP8788_VBATT];
int scaleint;
int scalepart;
int ret;
if (!channel)
return -EINVAL;
ret = iio_read_channel_scale(channel, &scaleint, &scalepart);
if (ret != IIO_VAL_INT_PLUS_MICRO)
return -EINVAL;
/* unit: mV */
*result = (scaleint + scalepart * 1000000) / 1000;
return 0;
}
static int lp8788_get_battery_voltage(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
return lp8788_get_vbatt_adc(pchg, &val->intval);
}
static int lp8788_get_battery_capacity(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
struct lp8788 *lp = pchg->lp;
struct lp8788_charger_platform_data *pdata = pchg->pdata;
unsigned int max_vbatt;
unsigned int vbatt;
enum lp8788_charging_state state;
u8 data;
int ret;
if (!pdata)
return -EINVAL;
max_vbatt = pdata->max_vbatt_mv;
if (max_vbatt == 0)
return -EINVAL;
ret = lp8788_read_byte(lp, LP8788_CHG_STATUS, &data);
if (ret)
return ret;
state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
if (state == LP8788_MAINTENANCE) {
val->intval = LP8788_MAX_BATT_CAPACITY;
} else {
ret = lp8788_get_vbatt_adc(pchg, &vbatt);
if (ret)
return ret;
val->intval = (vbatt * LP8788_MAX_BATT_CAPACITY) / max_vbatt;
val->intval = min(val->intval, LP8788_MAX_BATT_CAPACITY);
}
return 0;
}
static int lp8788_get_battery_temperature(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
struct iio_channel *channel = pchg->chan[LP8788_BATT_TEMP];
int scaleint;
int scalepart;
int ret;
if (!channel)
return -EINVAL;
ret = iio_read_channel_scale(channel, &scaleint, &scalepart);
if (ret != IIO_VAL_INT_PLUS_MICRO)
return -EINVAL;
/* unit: 0.1 'C */
val->intval = (scaleint + scalepart * 1000000) / 100;
return 0;
}
static int lp8788_get_battery_charging_current(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
u8 read;
lp8788_read_byte(pchg->lp, LP8788_CHG_IBATT, &read);
read &= LP8788_CHG_IBATT_M;
val->intval = LP8788_ISEL_STEP *
(min_t(int, read, LP8788_ISEL_MAX) + 1);
return 0;
}
static int lp8788_get_charging_termination_voltage(struct lp8788_charger *pchg,
union power_supply_propval *val)
{
u8 read;
lp8788_read_byte(pchg->lp, LP8788_CHG_VTERM, &read);
read &= LP8788_CHG_VTERM_M;
val->intval = LP8788_VTERM_MIN + LP8788_VTERM_STEP * read;
return 0;
}
static int lp8788_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct lp8788_charger *pchg = dev_get_drvdata(psy->dev->parent);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
return lp8788_get_battery_status(pchg, val);
case POWER_SUPPLY_PROP_HEALTH:
return lp8788_get_battery_health(pchg, val);
case POWER_SUPPLY_PROP_PRESENT:
return lp8788_get_battery_present(pchg, val);
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
return lp8788_get_battery_voltage(pchg, val);
case POWER_SUPPLY_PROP_CAPACITY:
return lp8788_get_battery_capacity(pchg, val);
case POWER_SUPPLY_PROP_TEMP:
return lp8788_get_battery_temperature(pchg, val);
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
return lp8788_get_battery_charging_current(pchg, val);
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
return lp8788_get_charging_termination_voltage(pchg, val);
default:
return -EINVAL;
}
}
static inline bool lp8788_is_valid_charger_register(u8 addr)
{
return addr >= LP8788_CHG_START && addr <= LP8788_CHG_END;
}
static int lp8788_update_charger_params(struct lp8788_charger *pchg)
{
struct lp8788 *lp = pchg->lp;
struct lp8788_charger_platform_data *pdata = pchg->pdata;
struct lp8788_chg_param *param;
int i;
int ret;
if (!pdata || !pdata->chg_params) {
dev_info(lp->dev, "skip updating charger parameters\n");
return 0;
}
/* settting charging parameters */
for (i = 0; i < pdata->num_chg_params; i++) {
param = pdata->chg_params + i;
if (!param)
continue;
if (lp8788_is_valid_charger_register(param->addr)) {
ret = lp8788_write_byte(lp, param->addr, param->val);
if (ret)
return ret;
}
}
return 0;
}
static int lp8788_psy_register(struct platform_device *pdev,
struct lp8788_charger *pchg)
{
pchg->charger.name = LP8788_CHARGER_NAME;
pchg->charger.type = POWER_SUPPLY_TYPE_MAINS;
pchg->charger.properties = lp8788_charger_prop;
pchg->charger.num_properties = ARRAY_SIZE(lp8788_charger_prop);
pchg->charger.get_property = lp8788_charger_get_property;
pchg->charger.supplied_to = battery_supplied_to;
pchg->charger.num_supplicants = ARRAY_SIZE(battery_supplied_to);
if (power_supply_register(&pdev->dev, &pchg->charger))
return -EPERM;
pchg->battery.name = LP8788_BATTERY_NAME;
pchg->battery.type = POWER_SUPPLY_TYPE_BATTERY;
pchg->battery.properties = lp8788_battery_prop;
pchg->battery.num_properties = ARRAY_SIZE(lp8788_battery_prop);
pchg->battery.get_property = lp8788_battery_get_property;
if (power_supply_register(&pdev->dev, &pchg->battery))
return -EPERM;
return 0;
}
static void lp8788_psy_unregister(struct lp8788_charger *pchg)
{
power_supply_unregister(&pchg->battery);
power_supply_unregister(&pchg->charger);
}
static void lp8788_charger_event(struct work_struct *work)
{
struct lp8788_charger *pchg =
container_of(work, struct lp8788_charger, charger_work);
struct lp8788_charger_platform_data *pdata = pchg->pdata;
enum lp8788_charger_event event = lp8788_is_charger_detected(pchg);
pdata->charger_event(pchg->lp, event);
}
static bool lp8788_find_irq_id(struct lp8788_charger *pchg, int virq, int *id)
{
bool found;
int i;
for (i = 0; i < pchg->num_irqs; i++) {
if (pchg->irqs[i].virq == virq) {
*id = pchg->irqs[i].which;
found = true;
break;
}
}
return found;
}
static irqreturn_t lp8788_charger_irq_thread(int virq, void *ptr)
{
struct lp8788_charger *pchg = ptr;
struct lp8788_charger_platform_data *pdata = pchg->pdata;
int id = -1;
if (!lp8788_find_irq_id(pchg, virq, &id))
return IRQ_NONE;
switch (id) {
case LP8788_INT_CHG_INPUT_STATE:
case LP8788_INT_CHG_STATE:
case LP8788_INT_EOC:
case LP8788_INT_BATT_LOW:
case LP8788_INT_NO_BATT:
power_supply_changed(&pchg->charger);
power_supply_changed(&pchg->battery);
break;
default:
break;
}
/* report charger dectection event if used */
if (!pdata)
goto irq_handled;
if (pdata->charger_event && id == LP8788_INT_CHG_INPUT_STATE)
schedule_work(&pchg->charger_work);
irq_handled:
return IRQ_HANDLED;
}
static int lp8788_set_irqs(struct platform_device *pdev,
struct lp8788_charger *pchg, const char *name)
{
struct resource *r;
struct irq_domain *irqdm = pchg->lp->irqdm;
int irq_start;
int irq_end;
int virq;
int nr_irq;
int i;
int ret;
/* no error even if no irq resource */
r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, name);
if (!r)
return 0;
irq_start = r->start;
irq_end = r->end;
for (i = irq_start; i <= irq_end; i++) {
nr_irq = pchg->num_irqs;
virq = irq_create_mapping(irqdm, i);
pchg->irqs[nr_irq].virq = virq;
pchg->irqs[nr_irq].which = i;
pchg->num_irqs++;
ret = request_threaded_irq(virq, NULL,
lp8788_charger_irq_thread,
0, name, pchg);
if (ret)
break;
}
if (i <= irq_end)
goto err_free_irq;
return 0;
err_free_irq:
for (i = 0; i < pchg->num_irqs; i++)
free_irq(pchg->irqs[i].virq, pchg);
return ret;
}
static int lp8788_irq_register(struct platform_device *pdev,
struct lp8788_charger *pchg)
{
struct lp8788 *lp = pchg->lp;
const char *name[] = {
LP8788_CHG_IRQ, LP8788_PRSW_IRQ, LP8788_BATT_IRQ
};
int i;
int ret;
INIT_WORK(&pchg->charger_work, lp8788_charger_event);
pchg->num_irqs = 0;
for (i = 0; i < ARRAY_SIZE(name); i++) {
ret = lp8788_set_irqs(pdev, pchg, name[i]);
if (ret) {
dev_warn(lp->dev, "irq setup failed: %s\n", name[i]);
return ret;
}
}
if (pchg->num_irqs > LP8788_MAX_CHG_IRQS) {
dev_err(lp->dev, "invalid total number of irqs: %d\n",
pchg->num_irqs);
return -EINVAL;
}
return 0;
}
static void lp8788_irq_unregister(struct platform_device *pdev,
struct lp8788_charger *pchg)
{
int i;
int irq;
for (i = 0; i < pchg->num_irqs; i++) {
irq = pchg->irqs[i].virq;
if (!irq)
continue;
free_irq(irq, pchg);
}
}
static void lp8788_setup_adc_channel(struct lp8788_charger *pchg)
{
struct lp8788_charger_platform_data *pdata = pchg->pdata;
struct device *dev = pchg->lp->dev;
struct iio_channel *chan;
enum lp8788_adc_id id;
const char *chan_name[LPADC_MAX] = {
[LPADC_VBATT_5P5] = "vbatt-5p5",
[LPADC_VBATT_6P0] = "vbatt-6p0",
[LPADC_VBATT_5P0] = "vbatt-5p0",
[LPADC_ADC1] = "adc1",
[LPADC_ADC2] = "adc2",
[LPADC_ADC3] = "adc3",
[LPADC_ADC4] = "adc4",
};
if (!pdata)
return;
id = pdata->vbatt_adc;
switch (id) {
case LPADC_VBATT_5P5:
case LPADC_VBATT_6P0:
case LPADC_VBATT_5P0:
chan = iio_channel_get(NULL, chan_name[id]);
pchg->chan[LP8788_VBATT] = IS_ERR(chan) ? NULL : chan;
break;
default:
dev_err(dev, "invalid ADC id for VBATT: %d\n", id);
pchg->chan[LP8788_VBATT] = NULL;
break;
}
id = pdata->batt_temp_adc;
switch (id) {
case LPADC_ADC1:
case LPADC_ADC2:
case LPADC_ADC3:
case LPADC_ADC4:
chan = iio_channel_get(NULL, chan_name[id]);
pchg->chan[LP8788_BATT_TEMP] = IS_ERR(chan) ? NULL : chan;
break;
default:
dev_err(dev, "invalid ADC id for BATT_TEMP : %d\n", id);
pchg->chan[LP8788_BATT_TEMP] = NULL;
break;
}
}
static void lp8788_release_adc_channel(struct lp8788_charger *pchg)
{
int i;
for (i = 0; i < LP8788_NUM_CHG_ADC; i++) {
if (!pchg->chan[i])
continue;
iio_channel_release(pchg->chan[i]);
pchg->chan[i] = NULL;
}
}
static ssize_t lp8788_show_charger_status(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lp8788_charger *pchg = dev_get_drvdata(dev);
enum lp8788_charging_state state;
char *desc[LP8788_MAX_CHG_STATE] = {
[LP8788_OFF] = "CHARGER OFF",
[LP8788_WARM_UP] = "WARM UP",
[LP8788_LOW_INPUT] = "LOW INPUT STATE",
[LP8788_PRECHARGE] = "CHARGING - PRECHARGE",
[LP8788_CC] = "CHARGING - CC",
[LP8788_CV] = "CHARGING - CV",
[LP8788_MAINTENANCE] = "NO CHARGING - MAINTENANCE",
[LP8788_BATTERY_FAULT] = "BATTERY FAULT",
[LP8788_SYSTEM_SUPPORT] = "SYSTEM SUPPORT",
[LP8788_HIGH_CURRENT] = "HIGH CURRENT",
};
u8 data;
lp8788_read_byte(pchg->lp, LP8788_CHG_STATUS, &data);
state = (data & LP8788_CHG_STATE_M) >> LP8788_CHG_STATE_S;
return scnprintf(buf, LP8788_BUF_SIZE, "%s\n", desc[state]);
}
static ssize_t lp8788_show_eoc_time(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lp8788_charger *pchg = dev_get_drvdata(dev);
char *stime[] = { "400ms", "5min", "10min", "15min",
"20min", "25min", "30min" "No timeout" };
u8 val;
lp8788_read_byte(pchg->lp, LP8788_CHG_EOC, &val);
val = (val & LP8788_CHG_EOC_TIME_M) >> LP8788_CHG_EOC_TIME_S;
return scnprintf(buf, LP8788_BUF_SIZE, "End Of Charge Time: %s\n",
stime[val]);
}
static ssize_t lp8788_show_eoc_level(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct lp8788_charger *pchg = dev_get_drvdata(dev);
char *abs_level[] = { "25mA", "49mA", "75mA", "98mA" };
char *relative_level[] = { "5%", "10%", "15%", "20%" };
char *level;
u8 val;
u8 mode;
lp8788_read_byte(pchg->lp, LP8788_CHG_EOC, &val);
mode = val & LP8788_CHG_EOC_MODE_M;
val = (val & LP8788_CHG_EOC_LEVEL_M) >> LP8788_CHG_EOC_LEVEL_S;
level = mode ? abs_level[val] : relative_level[val];
return scnprintf(buf, LP8788_BUF_SIZE, "End Of Charge Level: %s\n",
level);
}
static DEVICE_ATTR(charger_status, S_IRUSR, lp8788_show_charger_status, NULL);
static DEVICE_ATTR(eoc_time, S_IRUSR, lp8788_show_eoc_time, NULL);
static DEVICE_ATTR(eoc_level, S_IRUSR, lp8788_show_eoc_level, NULL);
static struct attribute *lp8788_charger_attr[] = {
&dev_attr_charger_status.attr,
&dev_attr_eoc_time.attr,
&dev_attr_eoc_level.attr,
NULL,
};
static const struct attribute_group lp8788_attr_group = {
.attrs = lp8788_charger_attr,
};
static __devinit int lp8788_charger_probe(struct platform_device *pdev)
{
struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);
struct lp8788_charger *pchg;
int ret;
pchg = devm_kzalloc(lp->dev, sizeof(struct lp8788_charger), GFP_KERNEL);
if (!pchg)
return -ENOMEM;
pchg->lp = lp;
pchg->pdata = lp->pdata ? lp->pdata->chg_pdata : NULL;
platform_set_drvdata(pdev, pchg);
ret = lp8788_update_charger_params(pchg);
if (ret)
return ret;
lp8788_setup_adc_channel(pchg);
ret = lp8788_psy_register(pdev, pchg);
if (ret)
return ret;
ret = sysfs_create_group(&pdev->dev.kobj, &lp8788_attr_group);
if (ret) {
lp8788_psy_unregister(pchg);
return ret;
}
ret = lp8788_irq_register(pdev, pchg);
if (ret)
dev_warn(lp->dev, "failed to register charger irq: %d\n", ret);
return 0;
}
static int __devexit lp8788_charger_remove(struct platform_device *pdev)
{
struct lp8788_charger *pchg = platform_get_drvdata(pdev);
flush_work(&pchg->charger_work);
lp8788_irq_unregister(pdev, pchg);
sysfs_remove_group(&pdev->dev.kobj, &lp8788_attr_group);
lp8788_psy_unregister(pchg);
lp8788_release_adc_channel(pchg);
return 0;
}
static struct platform_driver lp8788_charger_driver = {
.probe = lp8788_charger_probe,
.remove = __devexit_p(lp8788_charger_remove),
.driver = {
.name = LP8788_DEV_CHARGER,
.owner = THIS_MODULE,
},
};
module_platform_driver(lp8788_charger_driver);
MODULE_DESCRIPTION("TI LP8788 Charger Driver");
MODULE_AUTHOR("Milo Kim");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:lp8788-charger");

13
drivers/power/pda_power.c
View File

@ -281,6 +281,12 @@ static int pda_power_probe(struct platform_device *pdev)
goto init_failed;
}
ac_draw = regulator_get(dev, "ac_draw");
if (IS_ERR(ac_draw)) {
dev_dbg(dev, "couldn't get ac_draw regulator\n");
ac_draw = NULL;
}
update_status();
update_charger();
@ -309,13 +315,6 @@ static int pda_power_probe(struct platform_device *pdev)
pda_psy_usb.num_supplicants = pdata->num_supplicants;
}
ac_draw = regulator_get(dev, "ac_draw");
if (IS_ERR(ac_draw)) {
dev_dbg(dev, "couldn't get ac_draw regulator\n");
ac_draw = NULL;
ret = PTR_ERR(ac_draw);
}
#ifdef CONFIG_USB_OTG_UTILS
transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
if (!IS_ERR_OR_NULL(transceiver)) {

3
drivers/power/power_supply_sysfs.c
View File

@ -138,6 +138,7 @@ static struct device_attribute power_supply_attrs[] = {
POWER_SUPPLY_ATTR(health),
POWER_SUPPLY_ATTR(present),
POWER_SUPPLY_ATTR(online),
POWER_SUPPLY_ATTR(authentic),
POWER_SUPPLY_ATTR(technology),
POWER_SUPPLY_ATTR(cycle_count),
POWER_SUPPLY_ATTR(voltage_max),
@ -160,7 +161,9 @@ static struct device_attribute power_supply_attrs[] = {
POWER_SUPPLY_ATTR(charge_avg),
POWER_SUPPLY_ATTR(charge_counter),
POWER_SUPPLY_ATTR(constant_charge_current),
POWER_SUPPLY_ATTR(constant_charge_current_max),
POWER_SUPPLY_ATTR(constant_charge_voltage),
POWER_SUPPLY_ATTR(constant_charge_voltage_max),
POWER_SUPPLY_ATTR(energy_full_design),
POWER_SUPPLY_ATTR(energy_empty_design),
POWER_SUPPLY_ATTR(energy_full),

10
drivers/power/sbs-battery.c
View File

@ -759,6 +759,16 @@ static int __devinit sbs_probe(struct i2c_client *client,
chip->irq = irq;
skip_gpio:
/*
* Before we register, we need to make sure we can actually talk
* to the battery.
*/
rc = sbs_read_word_data(client, sbs_data[REG_STATUS].addr);
if (rc < 0) {
dev_err(&client->dev, "%s: Failed to get device status\n",
__func__);
goto exit_psupply;
}
rc = power_supply_register(&client->dev, &chip->power_supply);
if (rc) {

97
drivers/power/smb347-charger.c
View File

@ -80,6 +80,7 @@
#define CFG_FAULT_IRQ_DCIN_UV BIT(2)
#define CFG_STATUS_IRQ 0x0d
#define CFG_STATUS_IRQ_TERMINATION_OR_TAPER BIT(4)
#define CFG_STATUS_IRQ_CHARGE_TIMEOUT BIT(7)
#define CFG_ADDRESS 0x0e
/* Command registers */
@ -96,6 +97,9 @@
#define IRQSTAT_C_TERMINATION_STAT BIT(0)
#define IRQSTAT_C_TERMINATION_IRQ BIT(1)
#define IRQSTAT_C_TAPER_IRQ BIT(3)
#define IRQSTAT_D 0x38
#define IRQSTAT_D_CHARGE_TIMEOUT_STAT BIT(2)
#define IRQSTAT_D_CHARGE_TIMEOUT_IRQ BIT(3)
#define IRQSTAT_E 0x39
#define IRQSTAT_E_USBIN_UV_STAT BIT(0)
#define IRQSTAT_E_USBIN_UV_IRQ BIT(1)
@ -109,8 +113,10 @@
#define STAT_B 0x3c
#define STAT_C 0x3d
#define STAT_C_CHG_ENABLED BIT(0)
#define STAT_C_HOLDOFF_STAT BIT(3)
#define STAT_C_CHG_MASK 0x06
#define STAT_C_CHG_SHIFT 1
#define STAT_C_CHG_TERM BIT(5)
#define STAT_C_CHARGER_ERROR BIT(6)
#define STAT_E 0x3f
@ -701,7 +707,7 @@ static int smb347_hw_init(struct smb347_charger *smb)
static irqreturn_t smb347_interrupt(int irq, void *data)
{
struct smb347_charger *smb = data;
unsigned int stat_c, irqstat_e, irqstat_c;
unsigned int stat_c, irqstat_c, irqstat_d, irqstat_e;
bool handled = false;
int ret;
@ -717,6 +723,12 @@ static irqreturn_t smb347_interrupt(int irq, void *data)
return IRQ_NONE;
}
ret = regmap_read(smb->regmap, IRQSTAT_D, &irqstat_d);
if (ret < 0) {
dev_warn(smb->dev, "reading IRQSTAT_D failed\n");
return IRQ_NONE;
}
ret = regmap_read(smb->regmap, IRQSTAT_E, &irqstat_e);
if (ret < 0) {
dev_warn(smb->dev, "reading IRQSTAT_E failed\n");
@ -724,13 +736,11 @@ static irqreturn_t smb347_interrupt(int irq, void *data)
}
/*
* If we get charger error we report the error back to user and
* disable charging.
* If we get charger error we report the error back to user.
* If the error is recovered charging will resume again.
*/
if (stat_c & STAT_C_CHARGER_ERROR) {
dev_err(smb->dev, "error in charger, disabling charging\n");
smb347_charging_disable(smb);
dev_err(smb->dev, "charging stopped due to charger error\n");
power_supply_changed(&smb->battery);
handled = true;
}
@ -743,6 +753,20 @@ static irqreturn_t smb347_interrupt(int irq, void *data)
if (irqstat_c & (IRQSTAT_C_TERMINATION_IRQ | IRQSTAT_C_TAPER_IRQ)) {
if (irqstat_c & IRQSTAT_C_TERMINATION_STAT)
power_supply_changed(&smb->battery);
dev_dbg(smb->dev, "going to HW maintenance mode\n");
handled = true;
}
/*
* If we got a charger timeout INT that means the charge
* full is not detected with in charge timeout value.
*/
if (irqstat_d & IRQSTAT_D_CHARGE_TIMEOUT_IRQ) {
dev_dbg(smb->dev, "total Charge Timeout INT received\n");
if (irqstat_d & IRQSTAT_D_CHARGE_TIMEOUT_STAT)
dev_warn(smb->dev, "charging stopped due to timeout\n");
power_supply_changed(&smb->battery);
handled = true;
}
@ -776,6 +800,7 @@ static int smb347_irq_set(struct smb347_charger *smb, bool enable)
* Enable/disable interrupts for:
* - under voltage
* - termination current reached
* - charger timeout
* - charger error
*/
ret = regmap_update_bits(smb->regmap, CFG_FAULT_IRQ, 0xff,
@ -784,7 +809,8 @@ static int smb347_irq_set(struct smb347_charger *smb, bool enable)
goto fail;
ret = regmap_update_bits(smb->regmap, CFG_STATUS_IRQ, 0xff,
enable ? CFG_STATUS_IRQ_TERMINATION_OR_TAPER : 0);
enable ? (CFG_STATUS_IRQ_TERMINATION_OR_TAPER |
CFG_STATUS_IRQ_CHARGE_TIMEOUT) : 0);
if (ret < 0)
goto fail;
@ -988,6 +1014,51 @@ static enum power_supply_property smb347_usb_properties[] = {
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
};
static int smb347_get_charging_status(struct smb347_charger *smb)
{
int ret, status;
unsigned int val;
if (!smb347_is_ps_online(smb))
return POWER_SUPPLY_STATUS_DISCHARGING;
ret = regmap_read(smb->regmap, STAT_C, &val);
if (ret < 0)
return ret;
if ((val & STAT_C_CHARGER_ERROR) ||
(val & STAT_C_HOLDOFF_STAT)) {
/*
* set to NOT CHARGING upon charger error
* or charging has stopped.
*/
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
} else {
if ((val & STAT_C_CHG_MASK) >> STAT_C_CHG_SHIFT) {
/*
* set to charging if battery is in pre-charge,
* fast charge or taper charging mode.
*/
status = POWER_SUPPLY_STATUS_CHARGING;
} else if (val & STAT_C_CHG_TERM) {
/*
* set the status to FULL if battery is not in pre
* charge, fast charge or taper charging mode AND
* charging is terminated at least once.
*/
status = POWER_SUPPLY_STATUS_FULL;
} else {
/*
* in this case no charger error or termination
* occured but charging is not in progress!!!
*/
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
}
}
return status;
}
static int smb347_battery_get_property(struct power_supply *psy,
enum power_supply_property prop,
union power_supply_propval *val)
@ -1003,14 +1074,10 @@ static int smb347_battery_get_property(struct power_supply *psy,
switch (prop) {
case POWER_SUPPLY_PROP_STATUS:
if (!smb347_is_ps_online(smb)) {
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
break;
}
if (smb347_charging_status(smb))
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else
val->intval = POWER_SUPPLY_STATUS_FULL;
ret = smb347_get_charging_status(smb);
if (ret < 0)
return ret;
val->intval = ret;
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:

25
drivers/power/twl4030_charger.c
View File

@ -41,16 +41,16 @@
#define TWL4030_STS_VBUS BIT(7)
#define TWL4030_STS_USB_ID BIT(2)
#define TWL4030_BBCHEN BIT(4)
#define TWL4030_BBSEL_MASK 0b1100
#define TWL4030_BBSEL_2V5 0b0000
#define TWL4030_BBSEL_3V0 0b0100
#define TWL4030_BBSEL_3V1 0b1000
#define TWL4030_BBSEL_3V2 0b1100
#define TWL4030_BBISEL_MASK 0b11
#define TWL4030_BBISEL_25uA 0b00
#define TWL4030_BBISEL_150uA 0b01
#define TWL4030_BBISEL_500uA 0b10
#define TWL4030_BBISEL_1000uA 0b11
#define TWL4030_BBSEL_MASK 0x0c
#define TWL4030_BBSEL_2V5 0x00
#define TWL4030_BBSEL_3V0 0x04
#define TWL4030_BBSEL_3V1 0x08
#define TWL4030_BBSEL_3V2 0x0c
#define TWL4030_BBISEL_MASK 0x03
#define TWL4030_BBISEL_25uA 0x00
#define TWL4030_BBISEL_150uA 0x01
#define TWL4030_BBISEL_500uA 0x02
#define TWL4030_BBISEL_1000uA 0x03
/* BCI interrupts */
#define TWL4030_WOVF BIT(0) /* Watchdog overflow */
@ -534,7 +534,8 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
}
ret = request_threaded_irq(bci->irq_chg, NULL,
twl4030_charger_interrupt, 0, pdev->name, bci);
twl4030_charger_interrupt, IRQF_ONESHOT, pdev->name,
bci);
if (ret < 0) {
dev_err(&pdev->dev, "could not request irq %d, status %d\n",
bci->irq_chg, ret);
@ -542,7 +543,7 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
}
ret = request_threaded_irq(bci->irq_bci, NULL,
twl4030_bci_interrupt, 0, pdev->name, bci);
twl4030_bci_interrupt, IRQF_ONESHOT, pdev->name, bci);
if (ret < 0) {
dev_err(&pdev->dev, "could not request irq %d, status %d\n",
bci->irq_bci, ret);

4
drivers/power/wm97xx_battery.c
View File

@ -212,8 +212,10 @@ static int __devinit wm97xx_bat_probe(struct platform_device *dev)
props++; /* POWER_SUPPLY_PROP_VOLTAGE_MIN */
prop = kzalloc(props * sizeof(*prop), GFP_KERNEL);
if (!prop)
if (!prop) {
ret = -ENOMEM;
goto err3;
}
prop[i++] = POWER_SUPPLY_PROP_PRESENT;
if (pdata->charge_gpio >= 0)

84
include/linux/mfd/88pm860x.h
View File

@ -39,6 +39,21 @@ enum {
#define PM8606_DCM_BOOST (0x00)
#define PM8606_PWM (0x01)
#define PM8607_MISC2 (0x42)
/* Power Up Log Register */
#define PM8607_POWER_UP_LOG (0x3F)
/* Charger Control Registers */
#define PM8607_CCNT (0x47)
#define PM8607_CHG_CTRL1 (0x48)
#define PM8607_CHG_CTRL2 (0x49)
#define PM8607_CHG_CTRL3 (0x4A)
#define PM8607_CHG_CTRL4 (0x4B)
#define PM8607_CHG_CTRL5 (0x4C)
#define PM8607_CHG_CTRL6 (0x4D)
#define PM8607_CHG_CTRL7 (0x4E)
/* Backlight Registers */
#define PM8606_WLED1A (0x02)
#define PM8606_WLED1B (0x03)
@ -189,6 +204,71 @@ enum {
#define PM8607_PD_PREBIAS (0x56) /* prebias time */
#define PM8607_GPADC_MISC1 (0x57)
/* bit definitions of MEAS_EN1*/
#define PM8607_MEAS_EN1_VBAT (1 << 0)
#define PM8607_MEAS_EN1_VCHG (1 << 1)
#define PM8607_MEAS_EN1_VSYS (1 << 2)
#define PM8607_MEAS_EN1_TINT (1 << 3)
#define PM8607_MEAS_EN1_RFTMP (1 << 4)
#define PM8607_MEAS_EN1_TBAT (1 << 5)
#define PM8607_MEAS_EN1_GPADC2 (1 << 6)
#define PM8607_MEAS_EN1_GPADC3 (1 << 7)
/* Battery Monitor Registers */
#define PM8607_GP_BIAS2 (0x5A)
#define PM8607_VBAT_LOWTH (0x5B)
#define PM8607_VCHG_LOWTH (0x5C)
#define PM8607_VSYS_LOWTH (0x5D)
#define PM8607_TINT_LOWTH (0x5E)
#define PM8607_GPADC0_LOWTH (0x5F)
#define PM8607_GPADC1_LOWTH (0x60)
#define PM8607_GPADC2_LOWTH (0x61)
#define PM8607_GPADC3_LOWTH (0x62)
#define PM8607_VBAT_HIGHTH (0x63)
#define PM8607_VCHG_HIGHTH (0x64)
#define PM8607_VSYS_HIGHTH (0x65)
#define PM8607_TINT_HIGHTH (0x66)
#define PM8607_GPADC0_HIGHTH (0x67)
#define PM8607_GPADC1_HIGHTH (0x68)
#define PM8607_GPADC2_HIGHTH (0x69)
#define PM8607_GPADC3_HIGHTH (0x6A)
#define PM8607_IBAT_MEAS1 (0x6B)
#define PM8607_IBAT_MEAS2 (0x6C)
#define PM8607_VBAT_MEAS1 (0x6D)
#define PM8607_VBAT_MEAS2 (0x6E)
#define PM8607_VCHG_MEAS1 (0x6F)
#define PM8607_VCHG_MEAS2 (0x70)
#define PM8607_VSYS_MEAS1 (0x71)
#define PM8607_VSYS_MEAS2 (0x72)
#define PM8607_TINT_MEAS1 (0x73)
#define PM8607_TINT_MEAS2 (0x74)
#define PM8607_GPADC0_MEAS1 (0x75)
#define PM8607_GPADC0_MEAS2 (0x76)
#define PM8607_GPADC1_MEAS1 (0x77)
#define PM8607_GPADC1_MEAS2 (0x78)
#define PM8607_GPADC2_MEAS1 (0x79)
#define PM8607_GPADC2_MEAS2 (0x7A)
#define PM8607_GPADC3_MEAS1 (0x7B)
#define PM8607_GPADC3_MEAS2 (0x7C)
#define PM8607_CCNT_MEAS1 (0x95)
#define PM8607_CCNT_MEAS2 (0x96)
#define PM8607_VBAT_AVG (0x97)
#define PM8607_VCHG_AVG (0x98)
#define PM8607_VSYS_AVG (0x99)
#define PM8607_VBAT_MIN (0x9A)
#define PM8607_VCHG_MIN (0x9B)
#define PM8607_VSYS_MIN (0x9C)
#define PM8607_VBAT_MAX (0x9D)
#define PM8607_VCHG_MAX (0x9E)
#define PM8607_VSYS_MAX (0x9F)
#define PM8607_GPADC_MISC2 (0x59)
#define PM8607_GPADC0_GP_BIAS_A0 (1 << 0)
#define PM8607_GPADC1_GP_BIAS_A1 (1 << 1)
#define PM8607_GPADC2_GP_BIAS_A2 (1 << 2)
#define PM8607_GPADC3_GP_BIAS_A3 (1 << 3)
#define PM8607_GPADC2_GP_BIAS_OUT2 (1 << 6)
/* RTC Control Registers */
#define PM8607_RTC1 (0xA0)
#define PM8607_RTC_COUNTER1 (0xA1)
@ -350,7 +430,8 @@ struct pm860x_touch_pdata {
};
struct pm860x_power_pdata {
unsigned fast_charge; /* charge current */
int max_capacity;
int resistor;
};
struct pm860x_platform_data {
@ -375,6 +456,7 @@ struct pm860x_platform_data {
struct regulator_init_data *ldo12;
struct regulator_init_data *ldo_vibrator;
struct regulator_init_data *ldo14;
struct charger_desc *chg_desc;
int companion_addr; /* I2C address of companion chip */
int i2c_port; /* Controlled by GI2C or PI2C */

51
include/linux/platform_data/lp8727.h
View File

@ -13,32 +13,32 @@
#define _LP8727_H
enum lp8727_eoc_level {
EOC_5P,
EOC_10P,
EOC_16P,
EOC_20P,
EOC_25P,
EOC_33P,
EOC_50P,
LP8727_EOC_5P,
LP8727_EOC_10P,
LP8727_EOC_16P,
LP8727_EOC_20P,
LP8727_EOC_25P,
LP8727_EOC_33P,
LP8727_EOC_50P,
};
enum lp8727_ichg {
ICHG_90mA,
ICHG_100mA,
ICHG_400mA,
ICHG_450mA,
ICHG_500mA,
ICHG_600mA,
ICHG_700mA,
ICHG_800mA,
ICHG_900mA,
ICHG_1000mA,
LP8727_ICHG_90mA,
LP8727_ICHG_100mA,
LP8727_ICHG_400mA,
LP8727_ICHG_450mA,
LP8727_ICHG_500mA,
LP8727_ICHG_600mA,
LP8727_ICHG_700mA,
LP8727_ICHG_800mA,
LP8727_ICHG_900mA,
LP8727_ICHG_1000mA,
};
/**
* struct lp8727_chg_param
* @eoc_level : end of charge level setting
* @ichg : charging current
* @ichg : charging current
*/
struct lp8727_chg_param {
enum lp8727_eoc_level eoc_level;
@ -47,19 +47,22 @@ struct lp8727_chg_param {
/**
* struct lp8727_platform_data
* @get_batt_present : check battery status - exists or not
* @get_batt_level : get battery voltage (mV)
* @get_batt_present : check battery status - exists or not
* @get_batt_level : get battery voltage (mV)
* @get_batt_capacity : get battery capacity (%)
* @get_batt_temp : get battery temperature
* @ac, @usb : charging parameters each charger type
* @get_batt_temp : get battery temperature
* @ac : charging parameters for AC type charger
* @usb : charging parameters for USB type charger
* @debounce_msec : interrupt debounce time
*/
struct lp8727_platform_data {
u8 (*get_batt_present)(void);
u16 (*get_batt_level)(void);
u8 (*get_batt_capacity)(void);
u8 (*get_batt_temp)(void);
struct lp8727_chg_param ac;
struct lp8727_chg_param usb;
struct lp8727_chg_param *ac;
struct lp8727_chg_param *usb;
unsigned int debounce_msec;
};
#endif

47
include/linux/power/charger-manager.h
View File

@ -109,24 +109,43 @@ struct charger_cable {
* struct charger_regulator
* @regulator_name: the name of regulator for using charger.
* @consumer: the regulator consumer for the charger.
* @externally_control:
* Set if the charger-manager cannot control charger,
* the charger will be maintained with disabled state.
* @cables:
* the array of charger cables to enable/disable charger
* and set current limit according to constratint data of
* struct charger_cable if only charger cable included
* in the array of charger cables is attached/detached.
* @num_cables: the number of charger cables.
* @attr_g: Attribute group for the charger(regulator)
* @attr_name: "name" sysfs entry
* @attr_state: "state" sysfs entry
* @attr_externally_control: "externally_control" sysfs entry
* @attrs: Arrays pointing to attr_name/state/externally_control for attr_g
*/
struct charger_regulator {
/* The name of regulator for charging */
const char *regulator_name;
struct regulator *consumer;
/* charger never on when system is on */
int externally_control;
/*
* Store constraint information related to current limit,
* each cable have different condition for charging.
*/
struct charger_cable *cables;
int num_cables;
struct attribute_group attr_g;
struct device_attribute attr_name;
struct device_attribute attr_state;
struct device_attribute attr_externally_control;
struct attribute *attrs[4];
struct charger_manager *cm;
};
/**
@ -140,7 +159,11 @@ struct charger_regulator {
* If it has dropped more than fullbatt_vchkdrop_uV after
* fullbatt_vchkdrop_ms, CM will restart charging.
* @fullbatt_uV: voltage in microvolt
* If it is not being charged and VBATT >= fullbatt_uV,
* If VBATT >= fullbatt_uV, it is assumed to be full.
* @fullbatt_soc: state of Charge in %
* If state of Charge >= fullbatt_soc, it is assumed to be full.
* @fullbatt_full_capacity: full capacity measure
* If full capacity of battery >= fullbatt_full_capacity,
* it is assumed to be full.
* @polling_interval_ms: interval in millisecond at which
* charger manager will monitor battery health
@ -148,7 +171,7 @@ struct charger_regulator {
* Specify where information for existance of battery can be obtained
* @psy_charger_stat: the names of power-supply for chargers
* @num_charger_regulator: the number of entries in charger_regulators
* @charger_regulators: array of regulator_bulk_data for chargers
* @charger_regulators: array of charger regulators
* @psy_fuel_gauge: the name of power-supply for fuel gauge
* @temperature_out_of_range:
* Determine whether the status is overheat or cold or normal.
@ -158,6 +181,13 @@ struct charger_regulator {
* @measure_battery_temp:
* true: measure battery temperature
* false: measure ambient temperature
* @charging_max_duration_ms: Maximum possible duration for charging
* If whole charging duration exceed 'charging_max_duration_ms',
* cm stop charging.
* @discharging_max_duration_ms:
* Maximum possible duration for discharging with charger cable
* after full-batt. If discharging duration exceed 'discharging
* max_duration_ms', cm start charging.
*/
struct charger_desc {
char *psy_name;
@ -168,6 +198,8 @@ struct charger_desc {
unsigned int fullbatt_vchkdrop_ms;
unsigned int fullbatt_vchkdrop_uV;
unsigned int fullbatt_uV;
unsigned int fullbatt_soc;
unsigned int fullbatt_full_capacity;
enum data_source battery_present;
@ -180,6 +212,9 @@ struct charger_desc {
int (*temperature_out_of_range)(int *mC);
bool measure_battery_temp;
u64 charging_max_duration_ms;
u64 discharging_max_duration_ms;
};
#define PSY_NAME_MAX 30
@ -194,8 +229,6 @@ struct charger_desc {
* @charger_enabled: the state of charger
* @fullbatt_vchk_jiffies_at:
* jiffies at the time full battery check will occur.
* @fullbatt_vchk_uV: voltage in microvolt
* criteria for full battery
* @fullbatt_vchk_work: work queue for full battery check
* @emergency_stop:
* When setting true, stop charging
@ -206,6 +239,8 @@ struct charger_desc {
* saved status of external power before entering suspend-to-RAM
* @status_save_batt:
* saved status of battery before entering suspend-to-RAM
* @charging_start_time: saved start time of enabling charging
* @charging_end_time: saved end time of disabling charging
*/
struct charger_manager {
struct list_head entry;
@ -218,7 +253,6 @@ struct charger_manager {
bool charger_enabled;
unsigned long fullbatt_vchk_jiffies_at;
unsigned int fullbatt_vchk_uV;
struct delayed_work fullbatt_vchk_work;
int emergency_stop;
@ -229,6 +263,9 @@ struct charger_manager {
bool status_save_ext_pwr_inserted;
bool status_save_batt;
u64 charging_start_time;
u64 charging_end_time;
};
#ifdef CONFIG_CHARGER_MANAGER

5
include/linux/power_supply.h
View File

@ -88,6 +88,7 @@ enum power_supply_property {
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_AUTHENTIC,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_CYCLE_COUNT,
POWER_SUPPLY_PROP_VOLTAGE_MAX,
@ -110,7 +111,9 @@ enum power_supply_property {
POWER_SUPPLY_PROP_CHARGE_AVG,
POWER_SUPPLY_PROP_CHARGE_COUNTER,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX,
POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN,
POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN,
POWER_SUPPLY_PROP_ENERGY_FULL,
@ -248,6 +251,7 @@ static inline bool power_supply_is_amp_property(enum power_supply_property psp)
case POWER_SUPPLY_PROP_CHARGE_AVG:
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX:
case POWER_SUPPLY_PROP_CURRENT_MAX:
case POWER_SUPPLY_PROP_CURRENT_NOW:
case POWER_SUPPLY_PROP_CURRENT_AVG:
@ -276,6 +280,7 @@ static inline bool power_supply_is_watt_property(enum power_supply_property psp)
case POWER_SUPPLY_PROP_VOLTAGE_AVG:
case POWER_SUPPLY_PROP_VOLTAGE_OCV:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
case POWER_SUPPLY_PROP_POWER_NOW:
return 1;
default: