mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-08 17:18:05 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
613
drivers/power/max14577_charger.c
Normal file
613
drivers/power/max14577_charger.c
Normal file
|
@ -0,0 +1,613 @@
|
|||
/*
|
||||
* max14577_charger.c - Battery charger driver for the Maxim 14577/77836
|
||||
*
|
||||
* Copyright (C) 2013,2014 Samsung Electronics
|
||||
* Krzysztof Kozlowski <k.kozlowski@samsung.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.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/power_supply.h>
|
||||
#include <linux/mfd/max14577-private.h>
|
||||
#include <linux/mfd/max14577.h>
|
||||
|
||||
struct max14577_charger {
|
||||
struct device *dev;
|
||||
struct max14577 *max14577;
|
||||
struct power_supply charger;
|
||||
|
||||
unsigned int charging_state;
|
||||
unsigned int battery_state;
|
||||
|
||||
struct max14577_charger_platform_data *pdata;
|
||||
};
|
||||
|
||||
/*
|
||||
* Helper function for mapping values of STATUS2/CHGTYP register on max14577
|
||||
* and max77836 chipsets to enum maxim_muic_charger_type.
|
||||
*/
|
||||
static enum max14577_muic_charger_type maxim_get_charger_type(
|
||||
enum maxim_device_type dev_type, u8 val) {
|
||||
switch (val) {
|
||||
case MAX14577_CHARGER_TYPE_NONE:
|
||||
case MAX14577_CHARGER_TYPE_USB:
|
||||
case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT:
|
||||
case MAX14577_CHARGER_TYPE_DEDICATED_CHG:
|
||||
case MAX14577_CHARGER_TYPE_SPECIAL_500MA:
|
||||
case MAX14577_CHARGER_TYPE_SPECIAL_1A:
|
||||
return val;
|
||||
case MAX14577_CHARGER_TYPE_DEAD_BATTERY:
|
||||
case MAX14577_CHARGER_TYPE_RESERVED:
|
||||
if (dev_type == MAXIM_DEVICE_TYPE_MAX77836)
|
||||
val |= 0x8;
|
||||
return val;
|
||||
default:
|
||||
WARN_ONCE(1, "max14577: Unsupported chgtyp register value 0x%02x", val);
|
||||
return val;
|
||||
}
|
||||
}
|
||||
|
||||
static int max14577_get_charger_state(struct max14577_charger *chg)
|
||||
{
|
||||
struct regmap *rmap = chg->max14577->regmap;
|
||||
int state = POWER_SUPPLY_STATUS_DISCHARGING;
|
||||
u8 reg_data;
|
||||
|
||||
/*
|
||||
* Charging occurs only if:
|
||||
* - CHGCTRL2/MBCHOSTEN == 1
|
||||
* - STATUS2/CGMBC == 1
|
||||
*
|
||||
* TODO:
|
||||
* - handle FULL after Top-off timer (EOC register may be off
|
||||
* and the charger won't be charging although MBCHOSTEN is on)
|
||||
* - handle properly dead-battery charging (respect timer)
|
||||
* - handle timers (fast-charge and prequal) /MBCCHGERR/
|
||||
*/
|
||||
max14577_read_reg(rmap, MAX14577_CHG_REG_CHG_CTRL2, ®_data);
|
||||
if ((reg_data & CHGCTRL2_MBCHOSTEN_MASK) == 0)
|
||||
goto state_set;
|
||||
|
||||
max14577_read_reg(rmap, MAX14577_CHG_REG_STATUS3, ®_data);
|
||||
if (reg_data & STATUS3_CGMBC_MASK) {
|
||||
/* Charger or USB-cable is connected */
|
||||
if (reg_data & STATUS3_EOC_MASK)
|
||||
state = POWER_SUPPLY_STATUS_FULL;
|
||||
else
|
||||
state = POWER_SUPPLY_STATUS_CHARGING;
|
||||
goto state_set;
|
||||
}
|
||||
|
||||
state_set:
|
||||
chg->charging_state = state;
|
||||
return state;
|
||||
}
|
||||
|
||||
/*
|
||||
* Supported charge types:
|
||||
* - POWER_SUPPLY_CHARGE_TYPE_NONE
|
||||
* - POWER_SUPPLY_CHARGE_TYPE_FAST
|
||||
*/
|
||||
static int max14577_get_charge_type(struct max14577_charger *chg)
|
||||
{
|
||||
/*
|
||||
* TODO: CHARGE_TYPE_TRICKLE (VCHGR_RC or EOC)?
|
||||
* As spec says:
|
||||
* [after reaching EOC interrupt]
|
||||
* "When the battery is fully charged, the 30-minute (typ)
|
||||
* top-off timer starts. The device continues to trickle
|
||||
* charge the battery until the top-off timer runs out."
|
||||
*/
|
||||
if (max14577_get_charger_state(chg) == POWER_SUPPLY_STATUS_CHARGING)
|
||||
return POWER_SUPPLY_CHARGE_TYPE_FAST;
|
||||
return POWER_SUPPLY_CHARGE_TYPE_NONE;
|
||||
}
|
||||
|
||||
static int max14577_get_online(struct max14577_charger *chg)
|
||||
{
|
||||
struct regmap *rmap = chg->max14577->regmap;
|
||||
u8 reg_data;
|
||||
enum max14577_muic_charger_type chg_type;
|
||||
|
||||
max14577_read_reg(rmap, MAX14577_MUIC_REG_STATUS2, ®_data);
|
||||
reg_data = ((reg_data & STATUS2_CHGTYP_MASK) >> STATUS2_CHGTYP_SHIFT);
|
||||
chg_type = maxim_get_charger_type(chg->max14577->dev_type, reg_data);
|
||||
switch (chg_type) {
|
||||
case MAX14577_CHARGER_TYPE_USB:
|
||||
case MAX14577_CHARGER_TYPE_DEDICATED_CHG:
|
||||
case MAX14577_CHARGER_TYPE_SPECIAL_500MA:
|
||||
case MAX14577_CHARGER_TYPE_SPECIAL_1A:
|
||||
case MAX14577_CHARGER_TYPE_DEAD_BATTERY:
|
||||
case MAX77836_CHARGER_TYPE_SPECIAL_BIAS:
|
||||
return 1;
|
||||
case MAX14577_CHARGER_TYPE_NONE:
|
||||
case MAX14577_CHARGER_TYPE_DOWNSTREAM_PORT:
|
||||
case MAX14577_CHARGER_TYPE_RESERVED:
|
||||
case MAX77836_CHARGER_TYPE_RESERVED:
|
||||
default:
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Supported health statuses:
|
||||
* - POWER_SUPPLY_HEALTH_DEAD
|
||||
* - POWER_SUPPLY_HEALTH_OVERVOLTAGE
|
||||
* - POWER_SUPPLY_HEALTH_GOOD
|
||||
*/
|
||||
static int max14577_get_battery_health(struct max14577_charger *chg)
|
||||
{
|
||||
struct regmap *rmap = chg->max14577->regmap;
|
||||
int state = POWER_SUPPLY_HEALTH_GOOD;
|
||||
u8 reg_data;
|
||||
enum max14577_muic_charger_type chg_type;
|
||||
|
||||
max14577_read_reg(rmap, MAX14577_MUIC_REG_STATUS2, ®_data);
|
||||
reg_data = ((reg_data & STATUS2_CHGTYP_MASK) >> STATUS2_CHGTYP_SHIFT);
|
||||
chg_type = maxim_get_charger_type(chg->max14577->dev_type, reg_data);
|
||||
if (chg_type == MAX14577_CHARGER_TYPE_DEAD_BATTERY) {
|
||||
state = POWER_SUPPLY_HEALTH_DEAD;
|
||||
goto state_set;
|
||||
}
|
||||
|
||||
max14577_read_reg(rmap, MAX14577_CHG_REG_STATUS3, ®_data);
|
||||
if (reg_data & STATUS3_OVP_MASK) {
|
||||
state = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
|
||||
goto state_set;
|
||||
}
|
||||
|
||||
state_set:
|
||||
chg->battery_state = state;
|
||||
return state;
|
||||
}
|
||||
|
||||
/*
|
||||
* Always returns 1.
|
||||
* The max14577 chip doesn't report any status of battery presence.
|
||||
* Lets assume that it will always be used with some battery.
|
||||
*/
|
||||
static int max14577_get_present(struct max14577_charger *chg)
|
||||
{
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int max14577_set_fast_charge_timer(struct max14577_charger *chg,
|
||||
unsigned long hours)
|
||||
{
|
||||
u8 reg_data;
|
||||
|
||||
switch (hours) {
|
||||
case 5 ... 7:
|
||||
reg_data = hours - 3;
|
||||
break;
|
||||
case 0:
|
||||
/* Disable */
|
||||
reg_data = 0x7;
|
||||
break;
|
||||
default:
|
||||
dev_err(chg->dev, "Wrong value for Fast-Charge Timer: %lu\n",
|
||||
hours);
|
||||
return -EINVAL;
|
||||
}
|
||||
reg_data <<= CHGCTRL1_TCHW_SHIFT;
|
||||
|
||||
return max14577_update_reg(chg->max14577->regmap,
|
||||
MAX14577_REG_CHGCTRL1, CHGCTRL1_TCHW_MASK, reg_data);
|
||||
}
|
||||
|
||||
static int max14577_init_constant_voltage(struct max14577_charger *chg,
|
||||
unsigned int uvolt)
|
||||
{
|
||||
u8 reg_data;
|
||||
|
||||
if (uvolt < MAXIM_CHARGER_CONSTANT_VOLTAGE_MIN ||
|
||||
uvolt > MAXIM_CHARGER_CONSTANT_VOLTAGE_MAX)
|
||||
return -EINVAL;
|
||||
|
||||
if (uvolt == 4200000)
|
||||
reg_data = 0x0;
|
||||
else if (uvolt == MAXIM_CHARGER_CONSTANT_VOLTAGE_MAX)
|
||||
reg_data = 0x1f;
|
||||
else if (uvolt <= 4280000) {
|
||||
unsigned int val = uvolt;
|
||||
|
||||
val -= MAXIM_CHARGER_CONSTANT_VOLTAGE_MIN;
|
||||
val /= MAXIM_CHARGER_CONSTANT_VOLTAGE_STEP;
|
||||
if (uvolt <= 4180000)
|
||||
reg_data = 0x1 + val;
|
||||
else
|
||||
reg_data = val; /* Fix for gap between 4.18V and 4.22V */
|
||||
} else
|
||||
return -EINVAL;
|
||||
|
||||
reg_data <<= CHGCTRL3_MBCCVWRC_SHIFT;
|
||||
|
||||
return max14577_write_reg(chg->max14577->regmap,
|
||||
MAX14577_CHG_REG_CHG_CTRL3, reg_data);
|
||||
}
|
||||
|
||||
static int max14577_init_eoc(struct max14577_charger *chg,
|
||||
unsigned int uamp)
|
||||
{
|
||||
unsigned int current_bits = 0xf;
|
||||
u8 reg_data;
|
||||
|
||||
switch (chg->max14577->dev_type) {
|
||||
case MAXIM_DEVICE_TYPE_MAX77836:
|
||||
if (uamp < 5000)
|
||||
return -EINVAL; /* Requested current is too low */
|
||||
|
||||
if (uamp >= 7500 && uamp < 10000)
|
||||
current_bits = 0x0;
|
||||
else if (uamp <= 50000) {
|
||||
/* <5000, 7499> and <10000, 50000> */
|
||||
current_bits = uamp / 5000;
|
||||
} else {
|
||||
uamp = min(uamp, 100000U) - 50000U;
|
||||
current_bits = 0xa + uamp / 10000;
|
||||
}
|
||||
break;
|
||||
|
||||
case MAXIM_DEVICE_TYPE_MAX14577:
|
||||
default:
|
||||
if (uamp < MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN)
|
||||
return -EINVAL; /* Requested current is too low */
|
||||
|
||||
uamp = min(uamp, MAX14577_CHARGER_EOC_CURRENT_LIMIT_MAX);
|
||||
uamp -= MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN;
|
||||
current_bits = uamp / MAX14577_CHARGER_EOC_CURRENT_LIMIT_STEP;
|
||||
break;
|
||||
}
|
||||
|
||||
reg_data = current_bits << CHGCTRL5_EOCS_SHIFT;
|
||||
|
||||
return max14577_update_reg(chg->max14577->regmap,
|
||||
MAX14577_CHG_REG_CHG_CTRL5, CHGCTRL5_EOCS_MASK,
|
||||
reg_data);
|
||||
}
|
||||
|
||||
static int max14577_init_fast_charge(struct max14577_charger *chg,
|
||||
unsigned int uamp)
|
||||
{
|
||||
u8 reg_data;
|
||||
int ret;
|
||||
const struct maxim_charger_current *limits =
|
||||
&maxim_charger_currents[chg->max14577->dev_type];
|
||||
|
||||
ret = maxim_charger_calc_reg_current(limits, uamp, uamp, ®_data);
|
||||
if (ret) {
|
||||
dev_err(chg->dev, "Wrong value for fast charge: %u\n", uamp);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return max14577_update_reg(chg->max14577->regmap,
|
||||
MAX14577_CHG_REG_CHG_CTRL4,
|
||||
CHGCTRL4_MBCICHWRCL_MASK | CHGCTRL4_MBCICHWRCH_MASK,
|
||||
reg_data);
|
||||
}
|
||||
|
||||
/*
|
||||
* Sets charger registers to proper and safe default values.
|
||||
* Some of these values are equal to defaults in MAX14577E
|
||||
* data sheet but there are minor differences.
|
||||
*/
|
||||
static int max14577_charger_reg_init(struct max14577_charger *chg)
|
||||
{
|
||||
struct regmap *rmap = chg->max14577->regmap;
|
||||
u8 reg_data;
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* Charger-Type Manual Detection, default off (set CHGTYPMAN to 0)
|
||||
* Charger-Detection Enable, default on (set CHGDETEN to 1)
|
||||
* Combined mask of CHGDETEN and CHGTYPMAN will zero the CHGTYPMAN bit
|
||||
*/
|
||||
reg_data = 0x1 << CDETCTRL1_CHGDETEN_SHIFT;
|
||||
max14577_update_reg(rmap, MAX14577_REG_CDETCTRL1,
|
||||
CDETCTRL1_CHGDETEN_MASK | CDETCTRL1_CHGTYPMAN_MASK,
|
||||
reg_data);
|
||||
|
||||
/*
|
||||
* Wall-Adapter Rapid Charge, default on
|
||||
* Battery-Charger, default on
|
||||
*/
|
||||
reg_data = 0x1 << CHGCTRL2_VCHGR_RC_SHIFT;
|
||||
reg_data |= 0x1 << CHGCTRL2_MBCHOSTEN_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL2, reg_data);
|
||||
|
||||
/* Auto Charging Stop, default off */
|
||||
reg_data = 0x0 << CHGCTRL6_AUTOSTOP_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL6, reg_data);
|
||||
|
||||
ret = max14577_init_constant_voltage(chg, chg->pdata->constant_uvolt);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = max14577_init_eoc(chg, chg->pdata->eoc_uamp);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = max14577_init_fast_charge(chg, chg->pdata->fast_charge_uamp);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = max14577_set_fast_charge_timer(chg,
|
||||
MAXIM_CHARGER_FAST_CHARGE_TIMER_DEFAULT);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
/* Initialize Overvoltage-Protection Threshold */
|
||||
switch (chg->pdata->ovp_uvolt) {
|
||||
case 7500000:
|
||||
reg_data = 0x0;
|
||||
break;
|
||||
case 6000000:
|
||||
case 6500000:
|
||||
case 7000000:
|
||||
reg_data = 0x1 + (chg->pdata->ovp_uvolt - 6000000) / 500000;
|
||||
break;
|
||||
default:
|
||||
dev_err(chg->dev, "Wrong value for OVP: %u\n",
|
||||
chg->pdata->ovp_uvolt);
|
||||
return -EINVAL;
|
||||
}
|
||||
reg_data <<= CHGCTRL7_OTPCGHCVS_SHIFT;
|
||||
max14577_write_reg(rmap, MAX14577_REG_CHGCTRL7, reg_data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Support property from charger */
|
||||
static enum power_supply_property max14577_charger_props[] = {
|
||||
POWER_SUPPLY_PROP_STATUS,
|
||||
POWER_SUPPLY_PROP_CHARGE_TYPE,
|
||||
POWER_SUPPLY_PROP_HEALTH,
|
||||
POWER_SUPPLY_PROP_PRESENT,
|
||||
POWER_SUPPLY_PROP_ONLINE,
|
||||
POWER_SUPPLY_PROP_MODEL_NAME,
|
||||
POWER_SUPPLY_PROP_MANUFACTURER,
|
||||
};
|
||||
|
||||
static const char * const model_names[] = {
|
||||
[MAXIM_DEVICE_TYPE_UNKNOWN] = "MAX14577-like",
|
||||
[MAXIM_DEVICE_TYPE_MAX14577] = "MAX14577",
|
||||
[MAXIM_DEVICE_TYPE_MAX77836] = "MAX77836",
|
||||
};
|
||||
static const char *manufacturer = "Maxim Integrated";
|
||||
|
||||
static int max14577_charger_get_property(struct power_supply *psy,
|
||||
enum power_supply_property psp,
|
||||
union power_supply_propval *val)
|
||||
{
|
||||
struct max14577_charger *chg = container_of(psy,
|
||||
struct max14577_charger,
|
||||
charger);
|
||||
int ret = 0;
|
||||
|
||||
switch (psp) {
|
||||
case POWER_SUPPLY_PROP_STATUS:
|
||||
val->intval = max14577_get_charger_state(chg);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_CHARGE_TYPE:
|
||||
val->intval = max14577_get_charge_type(chg);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_HEALTH:
|
||||
val->intval = max14577_get_battery_health(chg);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_PRESENT:
|
||||
val->intval = max14577_get_present(chg);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_ONLINE:
|
||||
val->intval = max14577_get_online(chg);
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_MODEL_NAME:
|
||||
BUILD_BUG_ON(ARRAY_SIZE(model_names) != MAXIM_DEVICE_TYPE_NUM);
|
||||
val->strval = model_names[chg->max14577->dev_type];
|
||||
break;
|
||||
case POWER_SUPPLY_PROP_MANUFACTURER:
|
||||
val->strval = manufacturer;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_OF
|
||||
static struct max14577_charger_platform_data *max14577_charger_dt_init(
|
||||
struct platform_device *pdev)
|
||||
{
|
||||
struct max14577_charger_platform_data *pdata;
|
||||
struct device_node *np = pdev->dev.of_node;
|
||||
int ret;
|
||||
|
||||
if (!np) {
|
||||
dev_err(&pdev->dev, "No charger OF node\n");
|
||||
return ERR_PTR(-EINVAL);
|
||||
}
|
||||
|
||||
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
|
||||
if (!pdata)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
ret = of_property_read_u32(np, "maxim,constant-uvolt",
|
||||
&pdata->constant_uvolt);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Cannot parse maxim,constant-uvolt field from DT\n");
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
ret = of_property_read_u32(np, "maxim,fast-charge-uamp",
|
||||
&pdata->fast_charge_uamp);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Cannot parse maxim,fast-charge-uamp field from DT\n");
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
ret = of_property_read_u32(np, "maxim,eoc-uamp", &pdata->eoc_uamp);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Cannot parse maxim,eoc-uamp field from DT\n");
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
ret = of_property_read_u32(np, "maxim,ovp-uvolt", &pdata->ovp_uvolt);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "Cannot parse maxim,ovp-uvolt field from DT\n");
|
||||
return ERR_PTR(ret);
|
||||
}
|
||||
|
||||
return pdata;
|
||||
}
|
||||
#else /* CONFIG_OF */
|
||||
static struct max14577_charger_platform_data *max14577_charger_dt_init(
|
||||
struct platform_device *pdev)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
#endif /* CONFIG_OF */
|
||||
|
||||
static ssize_t show_fast_charge_timer(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct max14577_charger *chg = dev_get_drvdata(dev);
|
||||
u8 reg_data;
|
||||
int ret;
|
||||
unsigned int val;
|
||||
|
||||
ret = max14577_read_reg(chg->max14577->regmap, MAX14577_REG_CHGCTRL1,
|
||||
®_data);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
reg_data &= CHGCTRL1_TCHW_MASK;
|
||||
reg_data >>= CHGCTRL1_TCHW_SHIFT;
|
||||
switch (reg_data) {
|
||||
case 0x2 ... 0x4:
|
||||
val = reg_data + 3;
|
||||
break;
|
||||
case 0x7:
|
||||
val = 0;
|
||||
break;
|
||||
default:
|
||||
val = 5;
|
||||
break;
|
||||
}
|
||||
|
||||
return scnprintf(buf, PAGE_SIZE, "%u\n", val);
|
||||
}
|
||||
|
||||
static ssize_t store_fast_charge_timer(struct device *dev,
|
||||
struct device_attribute *attr, const char *buf, size_t count)
|
||||
{
|
||||
struct max14577_charger *chg = dev_get_drvdata(dev);
|
||||
unsigned long val;
|
||||
int ret;
|
||||
|
||||
ret = kstrtoul(buf, 10, &val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = max14577_set_fast_charge_timer(chg, val);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(fast_charge_timer, S_IRUGO | S_IWUSR,
|
||||
show_fast_charge_timer, store_fast_charge_timer);
|
||||
|
||||
static int max14577_charger_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct max14577_charger *chg;
|
||||
struct max14577 *max14577 = dev_get_drvdata(pdev->dev.parent);
|
||||
int ret;
|
||||
|
||||
chg = devm_kzalloc(&pdev->dev, sizeof(*chg), GFP_KERNEL);
|
||||
if (!chg)
|
||||
return -ENOMEM;
|
||||
|
||||
platform_set_drvdata(pdev, chg);
|
||||
chg->dev = &pdev->dev;
|
||||
chg->max14577 = max14577;
|
||||
|
||||
chg->pdata = max14577_charger_dt_init(pdev);
|
||||
if (IS_ERR_OR_NULL(chg->pdata))
|
||||
return PTR_ERR(chg->pdata);
|
||||
|
||||
ret = max14577_charger_reg_init(chg);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
chg->charger.name = "max14577-charger",
|
||||
chg->charger.type = POWER_SUPPLY_TYPE_BATTERY,
|
||||
chg->charger.properties = max14577_charger_props,
|
||||
chg->charger.num_properties = ARRAY_SIZE(max14577_charger_props),
|
||||
chg->charger.get_property = max14577_charger_get_property,
|
||||
|
||||
ret = device_create_file(&pdev->dev, &dev_attr_fast_charge_timer);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed: create sysfs entry\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
ret = power_supply_register(&pdev->dev, &chg->charger);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "failed: power supply register\n");
|
||||
goto err;
|
||||
}
|
||||
|
||||
/* Check for valid values for charger */
|
||||
BUILD_BUG_ON(MAX14577_CHARGER_EOC_CURRENT_LIMIT_MIN +
|
||||
MAX14577_CHARGER_EOC_CURRENT_LIMIT_STEP * 0xf !=
|
||||
MAX14577_CHARGER_EOC_CURRENT_LIMIT_MAX);
|
||||
return 0;
|
||||
|
||||
err:
|
||||
device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int max14577_charger_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct max14577_charger *chg = platform_get_drvdata(pdev);
|
||||
|
||||
device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer);
|
||||
power_supply_unregister(&chg->charger);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct platform_device_id max14577_charger_id[] = {
|
||||
{ "max14577-charger", MAXIM_DEVICE_TYPE_MAX14577, },
|
||||
{ "max77836-charger", MAXIM_DEVICE_TYPE_MAX77836, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(platform, max14577_charger_id);
|
||||
|
||||
static struct platform_driver max14577_charger_driver = {
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "max14577-charger",
|
||||
},
|
||||
.probe = max14577_charger_probe,
|
||||
.remove = max14577_charger_remove,
|
||||
.id_table = max14577_charger_id,
|
||||
};
|
||||
module_platform_driver(max14577_charger_driver);
|
||||
|
||||
MODULE_AUTHOR("Krzysztof Kozlowski <k.kozlowski@samsung.com>");
|
||||
MODULE_DESCRIPTION("Maxim 14577/77836 charger driver");
|
||||
MODULE_LICENSE("GPL");
|
Loading…
Add table
Add a link
Reference in a new issue