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bq2415x_charger: Fix style issues 

I hate doing these style fixups myself, but I also hate inconsitent code.
Normally I just ask to resubmit the patch with the issues fixed, but N900
is special: I have a selfish interest in it. :)

Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This commit is contained in:
Anton Vorontsov 2012-11-18 15:35:32 -08:00
parent 7ad8583073
commit 6c47a3e00c
2 changed files with 215 additions and 184 deletions
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268
drivers/power/bq2415x_charger.c
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@ -1,31 +1,32 @@
/*
bq2415x_charger.c - bq2415x charger driver
Copyright (C) 2011-2012 Pali Rohár <pali.rohar@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
* bq2415x charger driver
*
* Copyright (C) 2011-2012 Pali Rohár <pali.rohar@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
Datasheets:
http://www.ti.com/product/bq24150
http://www.ti.com/product/bq24150a
http://www.ti.com/product/bq24152
http://www.ti.com/product/bq24153
http://www.ti.com/product/bq24153a
http://www.ti.com/product/bq24155
*/
* Datasheets:
* http://www.ti.com/product/bq24150
* http://www.ti.com/product/bq24150a
* http://www.ti.com/product/bq24152
* http://www.ti.com/product/bq24153
* http://www.ti.com/product/bq24153a
* http://www.ti.com/product/bq24155
*/
#include <linux/version.h>
#include <linux/kernel.h>
@ -222,7 +223,7 @@ static int bq2415x_i2c_read(struct bq2415x_device *bq, u8 reg)
/* read value from register, apply mask and right shift it */
static int bq2415x_i2c_read_mask(struct bq2415x_device *bq, u8 reg,
u8 mask, u8 shift)
u8 mask, u8 shift)
{
int ret;
@ -232,8 +233,7 @@ static int bq2415x_i2c_read_mask(struct bq2415x_device *bq, u8 reg,
ret = bq2415x_i2c_read(bq, reg);
if (ret < 0)
return ret;
else
return (ret & mask) >> shift;
return (ret & mask) >> shift;
}
/* read value from register and return one specified bit */
@ -241,8 +241,7 @@ static int bq2415x_i2c_read_bit(struct bq2415x_device *bq, u8 reg, u8 bit)
{
if (bit > 8)
return -EINVAL;
else
return bq2415x_i2c_read_mask(bq, reg, BIT(bit), bit);
return bq2415x_i2c_read_mask(bq, reg, BIT(bit), bit);
}
/**** i2c write functions ****/
@ -278,7 +277,7 @@ static int bq2415x_i2c_write(struct bq2415x_device *bq, u8 reg, u8 val)
/* read value from register, change it with mask left shifted and write back */
static int bq2415x_i2c_write_mask(struct bq2415x_device *bq, u8 reg, u8 val,
u8 mask, u8 shift)
u8 mask, u8 shift)
{
int ret;
@ -297,12 +296,11 @@ static int bq2415x_i2c_write_mask(struct bq2415x_device *bq, u8 reg, u8 val,
/* change only one bit in register */
static int bq2415x_i2c_write_bit(struct bq2415x_device *bq, u8 reg,
bool val, u8 bit)
bool val, u8 bit)
{
if (bit > 8)
return -EINVAL;
else
return bq2415x_i2c_write_mask(bq, reg, val, BIT(bit), bit);
return bq2415x_i2c_write_mask(bq, reg, val, BIT(bit), bit);
}
/**** global functions ****/
@ -312,6 +310,7 @@ static int bq2415x_exec_command(struct bq2415x_device *bq,
enum bq2415x_command command)
{
int ret;
switch (command) {
case BQ2415X_TIMER_RESET:
return bq2415x_i2c_write_bit(bq, BQ2415X_REG_STATUS,
@ -407,10 +406,8 @@ static int bq2415x_exec_command(struct bq2415x_device *bq,
case BQ2415X_REVISION:
return bq2415x_i2c_read_mask(bq, BQ2415X_REG_VENDER,
BQ2415X_MASK_REVISION, BQ2415X_SHIFT_REVISION);
default:
return -EINVAL;
}
return -EINVAL;
}
/* detect chip type */
@ -470,6 +467,7 @@ static int bq2415x_detect_revision(struct bq2415x_device *bq)
{
int ret = bq2415x_exec_command(bq, BQ2415X_REVISION);
int chip = bq2415x_detect_chip(bq);
if (ret < 0 || chip < 0)
return -1;
@ -483,7 +481,6 @@ static int bq2415x_detect_revision(struct bq2415x_device *bq)
return ret;
else
return -1;
case BQ24153:
case BQ24153A:
case BQ24156:
@ -495,13 +492,11 @@ static int bq2415x_detect_revision(struct bq2415x_device *bq)
return 1;
else
return -1;
case BQ24155:
if (ret == 3)
return 3;
else
return -1;
case BQUNKNOWN:
return -1;
}
@ -512,13 +507,16 @@ static int bq2415x_detect_revision(struct bq2415x_device *bq)
/* return chip vender code */
static int bq2415x_get_vender_code(struct bq2415x_device *bq)
{
int ret = bq2415x_exec_command(bq, BQ2415X_VENDER_CODE);
int ret;
ret = bq2415x_exec_command(bq, BQ2415X_VENDER_CODE);
if (ret < 0)
return 0;
else /* convert to binary */
return (ret & 0x1) +
((ret >> 1) & 0x1) * 10 +
((ret >> 2) & 0x1) * 100;
/* convert to binary */
return (ret & 0x1) +
((ret >> 1) & 0x1) * 10 +
((ret >> 2) & 0x1) * 100;
}
/* reset all chip registers to default state */
@ -537,6 +535,7 @@ static void bq2415x_reset_chip(struct bq2415x_device *bq)
static int bq2415x_set_current_limit(struct bq2415x_device *bq, int mA)
{
int val;
if (mA <= 100)
val = 0;
else if (mA <= 500)
@ -545,6 +544,7 @@ static int bq2415x_set_current_limit(struct bq2415x_device *bq, int mA)
val = 2;
else
val = 3;
return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val,
BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT);
}
@ -552,7 +552,9 @@ static int bq2415x_set_current_limit(struct bq2415x_device *bq, int mA)
/* get current limit in mA */
static int bq2415x_get_current_limit(struct bq2415x_device *bq)
{
int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL,
int ret;
ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL,
BQ2415X_MASK_LIMIT, BQ2415X_SHIFT_LIMIT);
if (ret < 0)
return ret;
@ -564,15 +566,15 @@ static int bq2415x_get_current_limit(struct bq2415x_device *bq)
return 800;
else if (ret == 3)
return 1800;
else
return -EINVAL;
return -EINVAL;
}
/* set weak battery voltage in mV */
static int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV)
{
/* round to 100mV */
int val;
/* round to 100mV */
if (mV <= 3400 + 50)
val = 0;
else if (mV <= 3500 + 50)
@ -581,6 +583,7 @@ static int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV)
val = 2;
else
val = 3;
return bq2415x_i2c_write_mask(bq, BQ2415X_REG_CONTROL, val,
BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV);
}
@ -588,17 +591,18 @@ static int bq2415x_set_weak_battery_voltage(struct bq2415x_device *bq, int mV)
/* get weak battery voltage in mV */
static int bq2415x_get_weak_battery_voltage(struct bq2415x_device *bq)
{
int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL,
int ret;
ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_CONTROL,
BQ2415X_MASK_VLOWV, BQ2415X_SHIFT_VLOWV);
if (ret < 0)
return ret;
else
return 100 * (34 + ret);
return 100 * (34 + ret);
}
/* set battery regulation voltage in mV */
static int bq2415x_set_battery_regulation_voltage(struct bq2415x_device *bq,
int mV)
int mV)
{
int val = (mV/10 - 350) / 2;
@ -616,21 +620,21 @@ static int bq2415x_get_battery_regulation_voltage(struct bq2415x_device *bq)
{
int ret = bq2415x_i2c_read_mask(bq, BQ2415X_REG_VOLTAGE,
BQ2415X_MASK_VO, BQ2415X_SHIFT_VO);
if (ret < 0)
return ret;
else
return 10 * (350 + 2*ret);
return 10 * (350 + 2*ret);
}
/* set charge current in mA (platform data must provide resistor sense) */
static int bq2415x_set_charge_current(struct bq2415x_device *bq, int mA)
{
int val;
if (bq->init_data.resistor_sense <= 0)
return -ENOSYS;
val = (mA * bq->init_data.resistor_sense - 37400) / 6800;
if (val < 0)
val = 0;
else if (val > 7)
@ -645,6 +649,7 @@ static int bq2415x_set_charge_current(struct bq2415x_device *bq, int mA)
static int bq2415x_get_charge_current(struct bq2415x_device *bq)
{
int ret;
if (bq->init_data.resistor_sense <= 0)
return -ENOSYS;
@ -652,19 +657,18 @@ static int bq2415x_get_charge_current(struct bq2415x_device *bq)
BQ2415X_MASK_VI_CHRG, BQ2415X_SHIFT_VI_CHRG);
if (ret < 0)
return ret;
else
return (37400 + 6800*ret) / bq->init_data.resistor_sense;
return (37400 + 6800*ret) / bq->init_data.resistor_sense;
}
/* set termination current in mA (platform data must provide resistor sense) */
static int bq2415x_set_termination_current(struct bq2415x_device *bq, int mA)
{
int val;
if (bq->init_data.resistor_sense <= 0)
return -ENOSYS;
val = (mA * bq->init_data.resistor_sense - 3400) / 3400;
if (val < 0)
val = 0;
else if (val > 7)
@ -679,6 +683,7 @@ static int bq2415x_set_termination_current(struct bq2415x_device *bq, int mA)
static int bq2415x_get_termination_current(struct bq2415x_device *bq)
{
int ret;
if (bq->init_data.resistor_sense <= 0)
return -ENOSYS;
@ -686,8 +691,7 @@ static int bq2415x_get_termination_current(struct bq2415x_device *bq)
BQ2415X_MASK_VI_TERM, BQ2415X_SHIFT_VI_TERM);
if (ret < 0)
return ret;
else
return (3400 + 3400*ret) / bq->init_data.resistor_sense;
return (3400 + 3400*ret) / bq->init_data.resistor_sense;
}
/* set default value of property */
@ -706,14 +710,17 @@ static int bq2415x_set_defaults(struct bq2415x_device *bq)
bq2415x_exec_command(bq, BQ2415X_BOOST_MODE_DISABLE);
bq2415x_exec_command(bq, BQ2415X_CHARGER_DISABLE);
bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_DISABLE);
bq2415x_set_default_value(bq, current_limit);
bq2415x_set_default_value(bq, weak_battery_voltage);
bq2415x_set_default_value(bq, battery_regulation_voltage);
if (bq->init_data.resistor_sense > 0) {
bq2415x_set_default_value(bq, charge_current);
bq2415x_set_default_value(bq, termination_current);
bq2415x_exec_command(bq, BQ2415X_CHARGE_TERMINATION_ENABLE);
}
bq2415x_exec_command(bq, BQ2415X_CHARGER_ENABLE);
return 0;
}
@ -844,8 +851,10 @@ static void bq2415x_timer_error(struct bq2415x_device *bq, const char *msg)
static void bq2415x_timer_work(struct work_struct *work)
{
struct bq2415x_device *bq = container_of(work, struct bq2415x_device,
work.work);
int ret, error, boost;
work.work);
int ret;
int error;
int boost;
if (!bq->autotimer)
return;
@ -946,10 +955,11 @@ static enum power_supply_property bq2415x_power_supply_props[] = {
};
static int bq2415x_power_supply_get_property(struct power_supply *psy,
enum power_supply_property psp, union power_supply_propval *val)
enum power_supply_property psp,
union power_supply_propval *val)
{
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
int ret;
switch (psp) {
@ -1031,7 +1041,8 @@ static void bq2415x_power_supply_exit(struct bq2415x_device *bq)
/* show *_status entries */
static ssize_t bq2415x_sysfs_show_status(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr,
char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
@ -1053,17 +1064,19 @@ static ssize_t bq2415x_sysfs_show_status(struct device *dev,
ret = bq2415x_exec_command(bq, command);
if (ret < 0)
return ret;
else
return sprintf(buf, "%d\n", ret);
return sprintf(buf, "%d\n", ret);
}
/* set timer entry:
auto - enable auto mode
off - disable auto mode
(other values) - reset chip timer
*/
/*
* set timer entry:
* auto - enable auto mode
* off - disable auto mode
* (other values) - reset chip timer
*/
static ssize_t bq2415x_sysfs_set_timer(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
@ -1079,40 +1092,42 @@ static ssize_t bq2415x_sysfs_set_timer(struct device *dev,
if (ret < 0)
return ret;
else
return count;
return count;
}
/* show timer entry (auto or off) */
static ssize_t bq2415x_sysfs_show_timer(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr,
char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
if (bq->timer_error)
return sprintf(buf, "%s\n", bq->timer_error);
if (bq->autotimer)
return sprintf(buf, "auto\n");
else
return sprintf(buf, "off\n");
return sprintf(buf, "off\n");
}
/* set mode entry:
auto - if automode is supported, enable it and set mode to reported
none - disable charger and boost mode
host - charging mode for host/hub chargers (current limit 500mA)
dedicated - charging mode for dedicated chargers (unlimited current limit)
boost - disable charger and enable boost mode
*/
/*
* set mode entry:
* auto - if automode is supported, enable it and set mode to reported
* none - disable charger and boost mode
* host - charging mode for host/hub chargers (current limit 500mA)
* dedicated - charging mode for dedicated chargers (unlimited current limit)
* boost - disable charger and enable boost mode
*/
static ssize_t bq2415x_sysfs_set_mode(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
enum bq2415x_mode mode;
int ret = 0;
@ -1144,19 +1159,20 @@ static ssize_t bq2415x_sysfs_set_mode(struct device *dev,
return count;
bq->automode = 1;
mode = bq->reported_mode;
} else
} else {
return -EINVAL;
}
ret = bq2415x_set_mode(bq, mode);
if (ret < 0)
return ret;
else
return count;
return count;
}
/* show mode entry (auto, none, host, dedicated or boost) */
static ssize_t bq2415x_sysfs_show_mode(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr,
char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
@ -1190,11 +1206,12 @@ static ssize_t bq2415x_sysfs_show_mode(struct device *dev,
/* show reported_mode entry (none, host, dedicated or boost) */
static ssize_t bq2415x_sysfs_show_reported_mode(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr,
char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
if (bq->automode < 0)
return -EINVAL;
@ -1215,11 +1232,13 @@ static ssize_t bq2415x_sysfs_show_reported_mode(struct device *dev,
/* directly set raw value to chip register, format: 'register value' */
static ssize_t bq2415x_sysfs_set_registers(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
ssize_t ret = 0;
unsigned int reg;
unsigned int val;
@ -1233,28 +1252,29 @@ static ssize_t bq2415x_sysfs_set_registers(struct device *dev,
ret = bq2415x_i2c_write(bq, reg, val);
if (ret < 0)
return ret;
else
return count;
return count;
}
/* print value of chip register, format: 'register=value' */
static ssize_t bq2415x_sysfs_print_reg(struct bq2415x_device *bq,
u8 reg, char *buf)
u8 reg,
char *buf)
{
int ret = bq2415x_i2c_read(bq, reg);
if (ret < 0)
return sprintf(buf, "%#.2x=error %d\n", reg, ret);
else
return sprintf(buf, "%#.2x=%#.2x\n", reg, ret);
return sprintf(buf, "%#.2x=%#.2x\n", reg, ret);
}
/* show all raw values of chip register, format per line: 'register=value' */
static ssize_t bq2415x_sysfs_show_registers(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr,
char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
ssize_t ret = 0;
ret += bq2415x_sysfs_print_reg(bq, BQ2415X_REG_STATUS, buf+ret);
@ -1267,11 +1287,13 @@ static ssize_t bq2415x_sysfs_show_registers(struct device *dev,
/* set current and voltage limit entries (in mA or mV) */
static ssize_t bq2415x_sysfs_set_limit(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
long val;
int ret;
@ -1293,17 +1315,17 @@ static ssize_t bq2415x_sysfs_set_limit(struct device *dev,
if (ret < 0)
return ret;
else
return count;
return count;
}
/* show current and voltage limit entries (in mA or mV) */
static ssize_t bq2415x_sysfs_show_limit(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr,
char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
int ret;
if (strcmp(attr->attr.name, "current_limit") == 0)
@ -1321,17 +1343,18 @@ static ssize_t bq2415x_sysfs_show_limit(struct device *dev,
if (ret < 0)
return ret;
else
return sprintf(buf, "%d\n", ret);
return sprintf(buf, "%d\n", ret);
}
/* set *_enable entries */
static ssize_t bq2415x_sysfs_set_enable(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
enum bq2415x_command command;
long val;
int ret;
@ -1357,17 +1380,17 @@ static ssize_t bq2415x_sysfs_set_enable(struct device *dev,
ret = bq2415x_exec_command(bq, command);
if (ret < 0)
return ret;
else
return count;
return count;
}
/* show *_enable entries */
static ssize_t bq2415x_sysfs_show_enable(struct device *dev,
struct device_attribute *attr, char *buf)
struct device_attribute *attr,
char *buf)
{
struct power_supply *psy = dev_get_drvdata(dev);
struct bq2415x_device *bq = container_of(psy, struct bq2415x_device,
charger);
charger);
enum bq2415x_command command;
int ret;
@ -1385,8 +1408,7 @@ static ssize_t bq2415x_sysfs_show_enable(struct device *dev,
ret = bq2415x_exec_command(bq, command);
if (ret < 0)
return ret;
else
return sprintf(buf, "%d\n", ret);
return sprintf(buf, "%d\n", ret);
}
static DEVICE_ATTR(current_limit, S_IWUSR | S_IRUGO,
@ -1425,6 +1447,10 @@ static DEVICE_ATTR(boost_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
static DEVICE_ATTR(fault_status, S_IRUGO, bq2415x_sysfs_show_status, NULL);
static struct attribute *bq2415x_sysfs_attributes[] = {
/*
* TODO: some (appropriate) of these attrs should be switched to
* use power supply class props.
*/
&dev_attr_current_limit.attr,
&dev_attr_weak_battery_voltage.attr,
&dev_attr_battery_regulation_voltage.attr,
@ -1466,7 +1492,7 @@ static void bq2415x_sysfs_exit(struct bq2415x_device *bq)
/* main bq2415x probe function */
static int bq2415x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
const struct i2c_device_id *id)
{
int ret;
int num;

131
include/linux/power/bq2415x_charger.h
View File

@ -1,72 +1,77 @@
/*
bq2415x_charger.h - bq2415x charger driver
Copyright (C) 2011-2012 Pali Rohár <pali.rohar@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
* bq2415x charger driver
*
* Copyright (C) 2011-2012 Pali Rohár <pali.rohar@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef BQ2415X_CHARGER_H
#define BQ2415X_CHARGER_H
/*
This is platform data for bq2415x chip. It contains default board voltages
and currents which can be also later configured via sysfs. If value is -1
then default chip value (specified in datasheet) will be used.
Value resistor_sense is needed for for configuring charge and termination
current. It it is less or equal to zero, configuring charge and termination
current will not be possible.
Function set_mode_hook is needed for automode (setting correct current limit
when charger is connected/disconnected or setting boost mode). When is NULL,
automode function is disabled. When is not NULL, it must have this prototype:
int (*set_mode_hook)(
void (*hook)(enum bq2415x_mode mode, void *data),
void *data)
hook is hook function (see below) and data is pointer to driver private data
bq2415x driver will call it as:
platform_data->set_mode_hook(bq2415x_hook_function, bq2415x_device);
Board/platform function set_mode_hook return non zero value when hook
function was successful registered. Platform code should call that hook
function (which get from pointer, with data) every time when charger was
connected/disconnected or require to enable boost mode. bq2415x driver then
will set correct current limit, enable/disable charger or boost mode.
Hook function has this prototype:
void hook(enum bq2415x_mode mode, void *data);
mode is bq2415x mode (charger or boost)
data is pointer to driver private data (which get from set_charger_type_hook)
When bq driver is being unloaded, it call function:
platform_data->set_mode_hook(NULL, NULL);
(hook function and driver private data are NULL)
After that board/platform code must not call driver hook function! It is
possible that pointer to hook function will not be valid and calling will
cause undefined result.
*/
* This is platform data for bq2415x chip. It contains default board
* voltages and currents which can be also later configured via sysfs. If
* value is -1 then default chip value (specified in datasheet) will be
* used.
*
* Value resistor_sense is needed for for configuring charge and
* termination current. It it is less or equal to zero, configuring charge
* and termination current will not be possible.
*
* Function set_mode_hook is needed for automode (setting correct current
* limit when charger is connected/disconnected or setting boost mode).
* When is NULL, automode function is disabled. When is not NULL, it must
* have this prototype:
*
* int (*set_mode_hook)(
* void (*hook)(enum bq2415x_mode mode, void *data),
* void *data)
*
* hook is hook function (see below) and data is pointer to driver private
* data
*
* bq2415x driver will call it as:
*
* platform_data->set_mode_hook(bq2415x_hook_function, bq2415x_device);
*
* Board/platform function set_mode_hook return non zero value when hook
* function was successful registered. Platform code should call that hook
* function (which get from pointer, with data) every time when charger
* was connected/disconnected or require to enable boost mode. bq2415x
* driver then will set correct current limit, enable/disable charger or
* boost mode.
*
* Hook function has this prototype:
*
* void hook(enum bq2415x_mode mode, void *data);
*
* mode is bq2415x mode (charger or boost)
* data is pointer to driver private data (which get from
* set_charger_type_hook)
*
* When bq driver is being unloaded, it call function:
*
* platform_data->set_mode_hook(NULL, NULL);
*
* (hook function and driver private data are NULL)
*
* After that board/platform code must not call driver hook function! It
* is possible that pointer to hook function will not be valid and calling
* will cause undefined result.
*/
/* Supported modes with maximal current limit */
enum bq2415x_mode {