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android / kernel / msm.git / 38d11ab01866974f22b13b084db9aef2e5bd38eb / . / drivers / power / smb349-charger.c
blob: 6da568542dd9149b8b338da9e0e4c8bce8707381 [file] [log] [blame]
/* Copyright (c) 2013-2014 The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*/
#define pr_fmt(fmt) "SMB349 %s: " fmt, __func__
#include <linux/i2c.h>
#include <linux/debugfs.h>
#include <linux/gpio.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/power_supply.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/mutex.h>
#include "smb349-charger.h"
enum {
WRKARND_APSD_FAIL = BIT(0),
};
struct smb349_regulator {
struct regulator_desc rdesc;
struct regulator_dev *rdev;
};
struct smb349_charger {
struct i2c_client *client;
struct device *dev;
bool recharge_disabled;
int recharge_mv;
bool iterm_disabled;
int iterm_ma;
int vfloat_mv;
int chg_valid_gpio;
int chg_valid_act_low;
int chg_present;
int fake_battery_soc;
bool chg_autonomous_mode;
bool disable_apsd;
bool battery_missing;
const char *bms_psy_name;
struct completion resumed;
bool resume_completed;
bool irq_waiting;
/* status tracking */
bool batt_full;
bool batt_hot;
bool batt_cold;
bool batt_warm;
bool batt_cool;
int charging_disabled;
int fastchg_current_max_ma;
int workaround_flags;
struct power_supply *usb_psy;
struct power_supply *bms_psy;
struct power_supply batt_psy;
struct smb349_regulator otg_vreg;
struct mutex irq_complete;
struct dentry *debug_root;
u32 peek_poke_address;
};
struct smb_irq_info {
const char *name;
int (*smb_irq)(struct smb349_charger *chip,
u8 rt_stat);
int high;
int low;
};
struct irq_handler_info {
u8 stat_reg;
u8 val;
u8 prev_val;
struct smb_irq_info irq_info[4];
};
struct chg_current_map {
int chg_current_ma;
u8 value;
};
static int chg_current[] = {
500, 900, 1000, 1100, 1200, 1300, 1500, 1600,
1700, 1800, 2000, 2200, 2400, 2500, 3000, 3500,
};
static int smb349_read_reg(struct smb349_charger *chip, int reg, u8 *val)
{
s32 ret;
ret = i2c_smbus_read_byte_data(chip->client, reg);
if (ret < 0) {
dev_err(chip->dev,
"i2c read fail: can't read from %02x: %d\n", reg, ret);
return ret;
} else {
*val = ret;
}
return 0;
}
static int smb349_write_reg(struct smb349_charger *chip, int reg, u8 val)
{
s32 ret;
ret = i2c_smbus_write_byte_data(chip->client, reg, val);
if (ret < 0) {
dev_err(chip->dev,
"i2c write fail: can't write %02x to %02x: %d\n",
val, reg, ret);
return ret;
}
return 0;
}
static int smb349_masked_write(struct smb349_charger *chip, int reg,
u8 mask, u8 val)
{
s32 rc;
u8 temp;
rc = smb349_read_reg(chip, reg, &temp);
if (rc) {
dev_err(chip->dev,
"smb349_read_reg Failed: reg=%03X, rc=%d\n", reg, rc);
return rc;
}
temp &= ~mask;
temp |= val & mask;
rc = smb349_write_reg(chip, reg, temp);
if (rc) {
dev_err(chip->dev,
"smb349_write Failed: reg=%03X, rc=%d\n", reg, rc);
return rc;
}
return 0;
}
static int smb349_enable_volatile_writes(struct smb349_charger *chip)
{
int rc;
rc = smb349_masked_write(chip, CMD_A_REG, CMD_A_VOLATILE_W_PERM_BIT,
CMD_A_VOLATILE_W_PERM_BIT);
if (rc)
dev_err(chip->dev, "Couldn't write VOLATILE_W_PERM_BIT rc=%d\n",
rc);
return rc;
}
static int smb349_fastchg_current_set(struct smb349_charger *chip)
{
u8 temp;
if ((chip->fastchg_current_max_ma < SMB349_FAST_CHG_MIN_MA) ||
(chip->fastchg_current_max_ma > SMB349_FAST_CHG_MAX_MA)) {
dev_dbg(chip->dev, "bad fastchg current mA=%d asked to set\n",
chip->fastchg_current_max_ma);
return -EINVAL;
}
temp = (chip->fastchg_current_max_ma - SMB349_FAST_CHG_MIN_MA)
/ SMB349_FAST_CHG_STEP_MA;
temp = temp << SMB349_FAST_CHG_SHIFT;
dev_dbg(chip->dev, "fastchg limit=%d setting %02x\n",
chip->fastchg_current_max_ma, temp);
return smb349_masked_write(chip, CHG_CURRENT_CTRL_REG,
SMB_FAST_CHG_CURRENT_MASK, temp);
}
static int smb349_float_voltage_set(struct smb349_charger *chip, int vfloat_mv)
{
u8 temp;
if ((vfloat_mv < MIN_FLOAT_MV) || (vfloat_mv > MAX_FLOAT_MV)) {
dev_err(chip->dev, "bad float voltage mv =%d asked to set\n",
vfloat_mv);
return -EINVAL;
}
temp = (vfloat_mv - MIN_FLOAT_MV) / VFLOAT_STEP_MV;
return smb349_masked_write(chip, VFLOAT_REG, VFLOAT_MASK, temp);
}
static int smb349_chg_otg_regulator_enable(struct regulator_dev *rdev)
{
int rc = 0;
struct smb349_charger *chip = rdev_get_drvdata(rdev);
rc = smb349_masked_write(chip, CMD_A_REG, CMD_A_OTG_ENABLE_BIT,
CMD_A_OTG_ENABLE_BIT);
if (rc)
dev_err(chip->dev, "Couldn't enable OTG mode rc=%d\n", rc);
return rc;
}
static int smb349_chg_otg_regulator_disable(struct regulator_dev *rdev)
{
int rc = 0;
struct smb349_charger *chip = rdev_get_drvdata(rdev);
rc = smb349_masked_write(chip, CMD_A_REG, CMD_A_OTG_ENABLE_BIT, 0);
if (rc)
dev_err(chip->dev, "Couldn't disable OTG mode rc=%d\n", rc);
return rc;
}
static int smb349_chg_otg_regulator_is_enable(struct regulator_dev *rdev)
{
int rc = 0;
u8 reg = 0;
struct smb349_charger *chip = rdev_get_drvdata(rdev);
rc = smb349_read_reg(chip, CMD_A_REG, &reg);
if (rc) {
dev_err(chip->dev,
"Couldn't read OTG enable bit rc=%d\n", rc);
return rc;
}
return (reg & CMD_A_OTG_ENABLE_BIT) ? 1 : 0;
}
struct regulator_ops smb349_chg_otg_reg_ops = {
.enable = smb349_chg_otg_regulator_enable,
.disable = smb349_chg_otg_regulator_disable,
.is_enabled = smb349_chg_otg_regulator_is_enable,
};
static int smb349_regulator_init(struct smb349_charger *chip)
{
int rc = 0;
struct regulator_init_data *init_data;
struct regulator_config cfg = {};
init_data = of_get_regulator_init_data(chip->dev, chip->dev->of_node);
if (!init_data) {
dev_err(chip->dev, "Unable to allocate memory\n");
return -ENOMEM;
}
if (init_data->constraints.name) {
chip->otg_vreg.rdesc.owner = THIS_MODULE;
chip->otg_vreg.rdesc.type = REGULATOR_VOLTAGE;
chip->otg_vreg.rdesc.ops = &smb349_chg_otg_reg_ops;
chip->otg_vreg.rdesc.name = init_data->constraints.name;
cfg.dev = chip->dev;
cfg.init_data = init_data;
cfg.driver_data = chip;
cfg.of_node = chip->dev->of_node;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_STATUS;
chip->otg_vreg.rdev = regulator_register(
&chip->otg_vreg.rdesc, &cfg);
if (IS_ERR(chip->otg_vreg.rdev)) {
rc = PTR_ERR(chip->otg_vreg.rdev);
chip->otg_vreg.rdev = NULL;
if (rc != -EPROBE_DEFER)
dev_err(chip->dev,
"OTG reg failed, rc=%d\n", rc);
}
}
return rc;
}
static int smb349_hw_init(struct smb349_charger *chip)
{
int rc;
u8 reg = 0, mask = 0;
/*
* If the charger is pre-configured for autonomous operation,
* do not apply additonal settings
*/
if (chip->chg_autonomous_mode) {
dev_dbg(chip->dev, "Charger configured for autonomous mode\n");
return 0;
}
rc = smb349_read_reg(chip, CHG_REVISION_REG, &reg);
if (rc) {
dev_err(chip->dev, "Couldn't read CHG_REVISION_REG rc=%d\n",
rc);
return rc;
}
/*
* A4 silicon revision of SMB349 fails charger type detection
* (apsd) due to interference on the D+/- lines by the USB phy.
* Set the workaround flag to disable charger type reporting
* for this revision.
*/
if ((reg & SMB349_REV_MASK) == SMB349_REV_A4)
chip->workaround_flags |= WRKARND_APSD_FAIL;
pr_debug("workaround_flags = %x\n", chip->workaround_flags);
rc = smb349_enable_volatile_writes(chip);
if (rc) {
dev_err(chip->dev, "Couldn't configure volatile writes rc=%d\n",
rc);
return rc;
}
/* setup defaults for CHG_CNTRL_REG */
reg = CHG_CTRL_BATT_MISSING_DET_THERM_IO;
mask = CHG_CTRL_BATT_MISSING_DET_MASK;
rc = smb349_masked_write(chip, CHG_CTRL_REG, mask, reg);
if (rc) {
dev_err(chip->dev, "Couldn't set CHG_CTRL_REG rc=%d\n", rc);
return rc;
}
/* setup defaults for PIN_CTRL_REG */
reg = CHG_PIN_CTRL_USBCS_REG_BIT | CHG_PIN_CTRL_CHG_EN_LOW_REG_BIT |
CHG_PIN_CTRL_APSD_IRQ_BIT | CHG_PIN_CTRL_CHG_ERR_IRQ_BIT;
mask = CHG_PIN_CTRL_CHG_EN_MASK | CHG_PIN_CTRL_USBCS_REG_MASK |
CHG_PIN_CTRL_APSD_IRQ_MASK | CHG_PIN_CTRL_CHG_ERR_IRQ_MASK;
rc = smb349_masked_write(chip, CHG_PIN_EN_CTRL_REG, mask, reg);
if (rc) {
dev_err(chip->dev, "Couldn't set CHG_PIN_EN_CTRL_REG rc=%d\n",
rc);
return rc;
}
/* setup USB 2.0/3.0 detection mechanism */
rc = smb349_masked_write(chip, CHG_OTH_CURRENT_CTRL_REG,
CHG_OTH_CTRL_USB_2_3_PIN_REG_MASK,
CHG_OTH_CTRL_USB_2_3_REG_CTRL_BIT);
if (rc) {
dev_err(chip->dev, "Couldn't set USB_2_3_REG_CTRL_BIT rc=%d\n",
rc);
return rc;
}
/* setup USB suspend and APSD */
reg = VARIOUS_FUNC_USB_SUSP_EN_REG_BIT;
if (!chip->disable_apsd)
reg |= VARIOUS_FUNC_APSD_EN_BIT;
mask = VARIOUS_FUNC_USB_SUSP_MASK | VARIOUS_FUNC_APSD_MASK;
rc = smb349_masked_write(chip, VARIOUS_FUNC_REG, mask, reg);
if (rc) {
dev_err(chip->dev, "Couldn't set VARIOUS_FUNC_REG rc=%d\n",
rc);
return rc;
}
/* Fault and Status IRQ configuration */
reg = FAULT_INT_HOT_COLD_HARD_BIT | FAULT_INT_HOT_COLD_SOFT_BIT
| FAULT_INT_INPUT_UV_BIT | FAULT_INT_AICL_COMPLETE_BIT;
rc = smb349_write_reg(chip, FAULT_INT_REG, reg);
if (rc) {
dev_err(chip->dev, "Couldn't set FAULT_INT_REG rc=%d\n", rc);
return rc;
}
reg = STATUS_INT_CHG_TIMEOUT_BIT | STATUS_INT_OTG_DETECT_BIT |
STATUS_INT_BATT_OV_BIT | STATUS_INT_TERM_TAPER_BIT |
STATUS_INT_FAST_CHG_BIT | STATUS_INT_LOW_BATT_BIT |
STATUS_INT_MISSING_BATT_BIT;
rc = smb349_write_reg(chip, STATUS_INT_REG, reg);
if (rc) {
dev_err(chip->dev, "Couldn't set STATUS_INT_REG rc=%d\n", rc);
return rc;
}
/* setup THERM Monitor */
rc = smb349_masked_write(chip, THERM_A_CTRL_REG,
THERM_A_THERM_MONITOR_EN_MASK, THERM_A_THERM_MONITOR_EN_BIT);
if (rc) {
dev_err(chip->dev, "Couldn't set THERM_A_CTRL_REG rc=%d\n",
rc);
return rc;
}
/* set the fast charge current limit */
rc = smb349_fastchg_current_set(chip);
if (rc) {
dev_err(chip->dev, "Couldn't set fastchg current rc=%d\n", rc);
return rc;
}
/* set the float voltage */
if (chip->vfloat_mv != -EINVAL) {
rc = smb349_float_voltage_set(chip, chip->vfloat_mv);
if (rc < 0) {
dev_err(chip->dev,
"Couldn't set float voltage rc = %d\n", rc);
return rc;
}
}
/* set iterm */
if (chip->iterm_ma != -EINVAL) {
if (chip->iterm_disabled) {
dev_err(chip->dev, "Error: Both iterm_disabled and iterm_ma set\n");
return -EINVAL;
} else {
if (chip->iterm_ma <= 100)
reg = CHG_ITERM_100MA;
else if (chip->iterm_ma <= 200)
reg = CHG_ITERM_200MA;
else if (chip->iterm_ma <= 300)
reg = CHG_ITERM_300MA;
else if (chip->iterm_ma <= 400)
reg = CHG_ITERM_400MA;
else if (chip->iterm_ma <= 500)
reg = CHG_ITERM_500MA;
else if (chip->iterm_ma <= 600)
reg = CHG_ITERM_600MA;
else
reg = CHG_ITERM_700MA;
rc = smb349_masked_write(chip, CHG_OTH_CURRENT_CTRL_REG,
CHG_ITERM_MASK, reg);
if (rc) {
dev_err(chip->dev,
"Couldn't set iterm rc = %d\n", rc);
return rc;
}
rc = smb349_masked_write(chip, CHG_CTRL_REG,
CHG_CTRL_CURR_TERM_END_MASK, 0);
if (rc) {
dev_err(chip->dev,
"Couldn't enable iterm rc = %d\n", rc);
return rc;
}
}
} else if (chip->iterm_disabled) {
rc = smb349_masked_write(chip, CHG_CTRL_REG,
CHG_CTRL_CURR_TERM_END_MASK,
CHG_CTRL_CURR_TERM_END_MASK);
if (rc) {
dev_err(chip->dev, "Couldn't set iterm rc = %d\n",
rc);
return rc;
}
}
/* set recharge-threshold */
if (chip->recharge_mv != -EINVAL) {
if (chip->recharge_disabled) {
dev_err(chip->dev, "Error: Both recharge_disabled and recharge_mv set\n");
return -EINVAL;
} else {
reg = 0;
if (chip->recharge_mv > 50)
reg = CHG_CTRL_RECHG_100MV_BIT;
rc = smb349_masked_write(chip, CHG_CTRL_REG,
CHG_CTRL_RECHG_50_100_MASK |
CHG_CTRL_AUTO_RECHARGE_MASK, reg);
if (rc) {
dev_err(chip->dev,
"Couldn't set rechg-cfg rc = %d\n", rc);
return rc;
}
}
} else if (chip->recharge_disabled) {
rc = smb349_masked_write(chip, CHG_CTRL_REG,
CHG_CTRL_AUTO_RECHARGE_MASK,
CHG_CTRL_AUTO_RECHARGE_MASK);
if (rc) {
dev_err(chip->dev,
"Couldn't disable auto-rechg rc = %d\n", rc);
return rc;
}
}
/* enable/disable charging */
rc = smb349_masked_write(chip, CMD_A_REG, CMD_A_CHG_ENABLE_BIT,
chip->charging_disabled ? 0 : CMD_A_CHG_ENABLE_BIT);
if (rc) {
dev_err(chip->dev, "Unable to %s charging. rc=%d\n",
chip->charging_disabled ? "disable" : "enable", rc);
}
return rc;
}
static enum power_supply_property smb349_battery_properties[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_CHARGING_ENABLED,
POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_MODEL_NAME,
};
static int smb349_get_prop_batt_status(struct smb349_charger *chip)
{
int rc;
u8 reg = 0;
if (chip->batt_full)
return POWER_SUPPLY_STATUS_FULL;
rc = smb349_read_reg(chip, STATUS_C_REG, &reg);
if (rc) {
dev_err(chip->dev, "Couldn't read STAT_C rc = %d\n", rc);
return POWER_SUPPLY_STATUS_UNKNOWN;
}
dev_dbg(chip->dev, "%s: STATUS_C_REG=%x\n", __func__, reg);
if (reg & STATUS_C_CHG_HOLD_OFF_BIT)
return POWER_SUPPLY_STATUS_NOT_CHARGING;
if ((reg & STATUS_C_CHARGING_MASK) &&
!(reg & STATUS_C_CHG_ERR_STATUS_BIT))
return POWER_SUPPLY_STATUS_CHARGING;
return POWER_SUPPLY_STATUS_DISCHARGING;
}
static int smb349_get_prop_batt_present(struct smb349_charger *chip)
{
return !chip->battery_missing;
}
static int smb349_get_prop_batt_capacity(struct smb349_charger *chip)
{
union power_supply_propval ret = {0, };
if (chip->fake_battery_soc >= 0)
return chip->fake_battery_soc;
if (chip->bms_psy) {
chip->bms_psy->get_property(chip->bms_psy,
POWER_SUPPLY_PROP_CAPACITY, &ret);
return ret.intval;
}
return SMB349_DEFAULT_BATT_CAPACITY;
}
static int smb349_get_prop_charge_type(struct smb349_charger *chip)
{
int rc;
u8 reg = 0;
rc = smb349_read_reg(chip, STATUS_C_REG, &reg);
if (rc) {
dev_err(chip->dev, "Couldn't read STAT_C rc = %d\n", rc);
return POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
}
dev_dbg(chip->dev, "%s: STATUS_C_REG=%x\n", __func__, reg);
reg &= STATUS_C_CHARGING_MASK;
if ((reg == STATUS_C_FAST_CHARGING) || (reg == STATUS_C_TAPER_CHARGING))
return POWER_SUPPLY_CHARGE_TYPE_FAST;
else if (reg == STATUS_C_PRE_CHARGING)
return POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
else
return POWER_SUPPLY_CHARGE_TYPE_NONE;
}
static int smb349_get_prop_batt_health(struct smb349_charger *chip)
{
union power_supply_propval ret = {0, };
if (chip->batt_hot)
ret.intval = POWER_SUPPLY_HEALTH_OVERHEAT;
else if (chip->batt_cold)
ret.intval = POWER_SUPPLY_HEALTH_COLD;
else if (chip->batt_warm)
ret.intval = POWER_SUPPLY_HEALTH_WARM;
else if (chip->batt_cool)
ret.intval = POWER_SUPPLY_HEALTH_COOL;
else
ret.intval = POWER_SUPPLY_HEALTH_GOOD;
return ret.intval;
}
static int smb349_get_charging_status(struct smb349_charger *chip)
{
int rc;
u8 reg = 0;
rc = smb349_read_reg(chip, STATUS_C_REG, &reg);
if (rc) {
dev_err(chip->dev, "Couldn't read STAT_C rc = %d\n", rc);
return 0;
}
return (reg & STATUS_C_CHG_ENABLE_STATUS_BIT) ? 1 : 0;
}
static int smb349_charging(struct smb349_charger *chip, int enable)
{
int rc = 0;
if (chip->chg_autonomous_mode) {
dev_dbg(chip->dev, "%s: Charger in autonmous mode\n", __func__);
return 0;
}
dev_dbg(chip->dev, "%s: charging enable = %d\n", __func__, enable);
rc = smb349_masked_write(chip, CMD_A_REG, CMD_A_CHG_ENABLE_BIT,
enable ? CMD_A_CHG_ENABLE_BIT : 0);
if (rc)
dev_err(chip->dev, "Couldn't enable = %d rc = %d\n",
enable, rc);
else
chip->charging_disabled = !enable;
return rc;
}
static int smb349_set_usb_chg_current(struct smb349_charger *chip,
int current_ma)
{
int i, rc = 0;
u8 reg = 0, mask = 0;
dev_dbg(chip->dev, "%s: USB current_ma = %d\n", __func__, current_ma);
if (chip->chg_autonomous_mode) {
dev_dbg(chip->dev, "%s: Charger in autonmous mode\n", __func__);
return 0;
}
/* Only set suspend bit when chg present and current_ma = 2 */
if (current_ma == 2 && chip->chg_present) {
rc = smb349_masked_write(chip, CMD_A_REG,
CMD_A_CHG_SUSP_EN_MASK, CMD_A_CHG_SUSP_EN_BIT);
if (rc < 0)
dev_err(chip->dev, "Couldn't suspend rc = %d\n", rc);
return rc;
}
if (current_ma <= 2)
current_ma = USB2_MIN_CURRENT_MA;
if (current_ma == USB2_MIN_CURRENT_MA) {
/* USB 2.0 - 100mA */
reg &= ~CMD_B_CHG_USB3_ENABLE_BIT;
reg &= ~CMD_B_CHG_USB_500_900_ENABLE_BIT;
} else if (current_ma == USB2_MAX_CURRENT_MA) {
/* USB 2.0 - 500mA */
reg &= ~CMD_B_CHG_USB3_ENABLE_BIT;
reg |= CMD_B_CHG_USB_500_900_ENABLE_BIT;
} else if (current_ma == USB3_MAX_CURRENT_MA) {
/* USB 3.0 - 900mA */
reg |= CMD_B_CHG_USB3_ENABLE_BIT;
reg |= CMD_B_CHG_USB_500_900_ENABLE_BIT;
} else if (current_ma > USB2_MAX_CURRENT_MA) {
/* HC mode - if none of the above */
reg |= CMD_B_CHG_HC_ENABLE_BIT;
for (i = ARRAY_SIZE(chg_current) - 1; i >= 0; i--) {
if (chg_current[i] <= current_ma)
break;
}
if (i < 0) {
dev_err(chip->dev, "Cannot find %dmA\n", current_ma);
i = 0;
}
rc = smb349_masked_write(chip, CHG_CURRENT_CTRL_REG,
AC_CHG_CURRENT_MASK, i);
if (rc)
dev_err(chip->dev, "Couldn't set input mA rc=%d\n", rc);
}
mask = CMD_B_CHG_HC_ENABLE_BIT | CMD_B_CHG_USB3_ENABLE_BIT |
CMD_B_CHG_USB_500_900_ENABLE_BIT;
rc = smb349_masked_write(chip, CMD_B_REG, mask, reg);
if (rc < 0)
dev_err(chip->dev, "Couldn't set charging mode rc = %d\n", rc);
/* unset the susp bit here */
rc = smb349_masked_write(chip, CMD_A_REG, CMD_A_CHG_SUSP_EN_MASK, 0);
if (rc < 0)
dev_err(chip->dev, "Couldn't disable suspend rc = %d\n", rc);
return rc;
}
static int
smb349_batt_property_is_writeable(struct power_supply *psy,
enum power_supply_property psp)
{
switch (psp) {
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
case POWER_SUPPLY_PROP_CAPACITY:
return 1;
default:
break;
}
return 0;
}
static int smb349_battery_set_property(struct power_supply *psy,
enum power_supply_property prop,
const union power_supply_propval *val)
{
struct smb349_charger *chip = container_of(psy,
struct smb349_charger, batt_psy);
switch (prop) {
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
smb349_charging(chip, val->intval);
break;
case POWER_SUPPLY_PROP_CAPACITY:
chip->fake_battery_soc = val->intval;
power_supply_changed(&chip->batt_psy);
break;
default:
return -EINVAL;
}
return 0;
}
static int smb349_battery_get_property(struct power_supply *psy,
enum power_supply_property prop,
union power_supply_propval *val)
{
struct smb349_charger *chip = container_of(psy,
struct smb349_charger, batt_psy);
switch (prop) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = smb349_get_prop_batt_status(chip);
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = smb349_get_prop_batt_present(chip);
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = smb349_get_prop_batt_capacity(chip);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
val->intval = smb349_get_charging_status(chip);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
val->intval = smb349_get_prop_charge_type(chip);
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = smb349_get_prop_batt_health(chip);
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = "SMB349";
break;
default:
return -EINVAL;
}
return 0;
}
static int apsd_complete(struct smb349_charger *chip, u8 status)
{
int rc;
u8 reg = 0;
enum power_supply_type type = POWER_SUPPLY_TYPE_UNKNOWN;
/*
* If apsd is disabled, charger detection is done by
* DCIN UV irq.
* status = ZERO - indicates charger removed, handled
* by DCIN UV irq
*/
if (chip->disable_apsd || status == 0) {
dev_dbg(chip->dev, "APSD %s, status = %d\n",
chip->disable_apsd ? "disabled" : "enabled", !!status);
return 0;
}
rc = smb349_read_reg(chip, STATUS_D_REG, &reg);
if (rc) {
dev_err(chip->dev, "Couldn't read STATUS D rc = %d\n", rc);
return rc;
}
dev_dbg(chip->dev, "%s: STATUS_D_REG=%x\n", __func__, reg);
switch (reg) {
case STATUS_D_PORT_ACA_DOCK:
case STATUS_D_PORT_ACA_C:
case STATUS_D_PORT_ACA_B:
case STATUS_D_PORT_ACA_A:
type = POWER_SUPPLY_TYPE_USB_ACA;
break;
case STATUS_D_PORT_CDP:
type = POWER_SUPPLY_TYPE_USB_CDP;
break;
case STATUS_D_PORT_DCP:
type = POWER_SUPPLY_TYPE_USB_DCP;
break;
case STATUS_D_PORT_SDP:
type = POWER_SUPPLY_TYPE_USB;
break;
case STATUS_D_PORT_OTHER:
type = POWER_SUPPLY_TYPE_USB_DCP;
break;
default:
type = POWER_SUPPLY_TYPE_USB;
break;
}
chip->chg_present = !!status;
/*
* Report the charger type as UNKNOWN if the
* apsd-fail flag is set. This nofifies the USB driver
* to initiate a s/w based charger type detection.
*/
if (chip->workaround_flags & WRKARND_APSD_FAIL)
type = POWER_SUPPLY_TYPE_UNKNOWN;
dev_dbg(chip->dev, "APSD complete. USB type detected=%d chg_present=%d",
type, chip->chg_present);
power_supply_set_supply_type(chip->usb_psy, type);
/* SMB is now done sampling the D+/D- lines, indicate USB driver */
dev_dbg(chip->dev, "%s updating usb_psy present=%d", __func__,
chip->chg_present);
power_supply_set_present(chip->usb_psy, chip->chg_present);
return 0;
}
static int chg_uv(struct smb349_charger *chip, u8 status)
{
/* use this to detect USB insertion only if !apsd */
if (chip->disable_apsd && status == 0) {
chip->chg_present = true;
dev_dbg(chip->dev, "%s updating usb_psy present=%d",
__func__, chip->chg_present);
power_supply_set_supply_type(chip->usb_psy,
POWER_SUPPLY_TYPE_USB);
power_supply_set_present(chip->usb_psy, chip->chg_present);
}
if (status != 0) {
chip->chg_present = false;
dev_dbg(chip->dev, "%s updating usb_psy present=%d",
__func__, chip->chg_present);
power_supply_set_supply_type(chip->usb_psy,
POWER_SUPPLY_TYPE_UNKNOWN);
power_supply_set_present(chip->usb_psy, chip->chg_present);
}
dev_dbg(chip->dev, "chip->chg_present = %d\n", chip->chg_present);
return 0;
}
static int fast_chg(struct smb349_charger *chip, u8 status)
{
dev_dbg(chip->dev, "%s\n", __func__);
return 0;
}
static int chg_term(struct smb349_charger *chip, u8 status)
{
dev_dbg(chip->dev, "%s\n", __func__);
chip->batt_full = !!status;
return 0;
}
static int hot_hard_handler(struct smb349_charger *chip, u8 status)
{
pr_debug("status = 0x%02x\n", status);
chip->batt_hot = !!status;
return 0;
}
static int cold_hard_handler(struct smb349_charger *chip, u8 status)
{
pr_debug("status = 0x%02x\n", status);
chip->batt_cold = !!status;
return 0;
}
static int hot_soft_handler(struct smb349_charger *chip, u8 status)
{
pr_debug("status = 0x%02x\n", status);
chip->batt_warm = !!status;
return 0;
}
static int cold_soft_handler(struct smb349_charger *chip, u8 status)
{
pr_debug("status = 0x%02x\n", status);
chip->batt_cool = !!status;
return 0;
}
static int battery_missing(struct smb349_charger *chip, u8 status)
{
if (status)
chip->battery_missing = true;
else
chip->battery_missing = false;
return 0;
}
static struct irq_handler_info handlers[] = {
[0] = {
.stat_reg = IRQ_A_REG,
.val = 0,
.prev_val = 0,
.irq_info = {
{
.name = "cold_soft",
.smb_irq = cold_soft_handler,
},
{
.name = "hot_soft",
.smb_irq = hot_soft_handler,
},
{
.name = "cold_hard",
.smb_irq = cold_hard_handler,
},
{
.name = "hot_hard",
.smb_irq = hot_hard_handler,
},
},
},
[1] = {
.stat_reg = IRQ_B_REG,
.val = 0,
.prev_val = 0,
.irq_info = {
{
.name = "fast_chg",
.smb_irq = fast_chg,
},
{
.name = "vbat_low",
},
{
.name = "battery_missing",
.smb_irq = battery_missing
},
{
.name = "battery_ov",
},
},
},
[2] = {
.stat_reg = IRQ_C_REG,
.val = 0,
.prev_val = 0,
.irq_info = {
{
.name = "chg_term",
.smb_irq = chg_term,
},
{
.name = "taper",
},
{
.name = "recharge",
},
{
.name = "chg_hot",
},
},
},
[3] = {
.stat_reg = IRQ_D_REG,
.val = 0,
.prev_val = 0,
.irq_info = {
{
.name = "prechg_timeout",
},
{
.name = "safety_timeout",
},
{
.name = "aicl_complete",
},
{
.name = "src_detect",
.smb_irq = apsd_complete,
},
},
},
[4] = {
.stat_reg = IRQ_E_REG,
.val = 0,
.prev_val = 0,
.irq_info = {
{
.name = "dcin_uv",
.smb_irq = chg_uv,
},
{
.name = "dcin_ov",
},
{
.name = "afvc_active",
},
{
.name = "unknown",
},
},
},
[5] = {
.stat_reg = IRQ_F_REG,
.val = 0,
.prev_val = 0,
.irq_info = {
{
.name = "power_ok",
},
{
.name = "otg_det",
},
{
.name = "otg_batt_uv",
},
{
.name = "otg_oc",
},
},
},
};
static irqreturn_t smb349_chg_stat_handler(int irq, void *dev_id)
{
struct smb349_charger *chip = dev_id;
int i, j;
u8 triggered;
u8 changed;
u8 rt_stat, prev_rt_stat;
int rc;
int handler_count = 0;
mutex_lock(&chip->irq_complete);
init_completion(&chip->resumed);
chip->irq_waiting = true;
if (!chip->resume_completed) {
dev_dbg(chip->dev, "IRQ triggered before device-resume\n");
wait_for_completion_interruptible(&chip->resumed);
}
chip->irq_waiting = false;
for (i = 0; i < ARRAY_SIZE(handlers); i++) {
rc = smb349_read_reg(chip, handlers[i].stat_reg,
&handlers[i].val);
if (rc < 0) {
dev_err(chip->dev, "Couldn't read %d rc = %d\n",
handlers[i].stat_reg, rc);
continue;
}
for (j = 0; j < ARRAY_SIZE(handlers[i].irq_info); j++) {
triggered = handlers[i].val
& (IRQ_LATCHED_MASK << (j * BITS_PER_IRQ));
rt_stat = handlers[i].val
& (IRQ_STATUS_MASK << (j * BITS_PER_IRQ));
prev_rt_stat = handlers[i].prev_val
& (IRQ_STATUS_MASK << (j * BITS_PER_IRQ));
changed = prev_rt_stat ^ rt_stat;
if (triggered || changed)
rt_stat ? handlers[i].irq_info[j].high++ :
handlers[i].irq_info[j].low++;
if ((triggered || changed)
&& handlers[i].irq_info[j].smb_irq != NULL) {
handler_count++;
rc = handlers[i].irq_info[j].smb_irq(chip,
rt_stat);
if (rc < 0)
dev_err(chip->dev,
"Couldn't handle %d irq for reg 0x%02x rc = %d\n",
j, handlers[i].stat_reg, rc);
}
}
handlers[i].prev_val = handlers[i].val;
}
pr_debug("handler count = %d\n", handler_count);
if (handler_count) {
pr_debug("batt psy changed\n");
power_supply_changed(&chip->batt_psy);
}
mutex_unlock(&chip->irq_complete);
return IRQ_HANDLED;
}
static irqreturn_t smb349_chg_valid_handler(int irq, void *dev_id)
{
struct smb349_charger *chip = dev_id;
int present;
present = gpio_get_value_cansleep(chip->chg_valid_gpio);
if (present < 0) {
dev_err(chip->dev, "Couldn't read chg_valid gpio=%d\n",
chip->chg_valid_gpio);
return IRQ_HANDLED;
}
present ^= chip->chg_valid_act_low;
dev_dbg(chip->dev, "%s: chg_present = %d\n", __func__, present);
if (present != chip->chg_present) {
chip->chg_present = present;
dev_dbg(chip->dev, "%s updating usb_psy present=%d",
__func__, chip->chg_present);
power_supply_set_present(chip->usb_psy, chip->chg_present);
}
return IRQ_HANDLED;
}
static void smb349_external_power_changed(struct power_supply *psy)
{
struct smb349_charger *chip = container_of(psy,
struct smb349_charger, batt_psy);
union power_supply_propval prop = {0,};
int rc, current_limit = 0, online = 0;
if (chip->bms_psy_name)
chip->bms_psy =
power_supply_get_by_name((char *)chip->bms_psy_name);
rc = chip->usb_psy->get_property(chip->usb_psy,
POWER_SUPPLY_PROP_ONLINE, &prop);
if (rc)
dev_err(chip->dev,
"Couldn't read USB online property, rc=%d\n", rc);
else
online = prop.intval;
rc = chip->usb_psy->get_property(chip->usb_psy,
POWER_SUPPLY_PROP_CURRENT_MAX, &prop);
if (rc)
dev_err(chip->dev,
"Couldn't read USB current_max property, rc=%d\n", rc);
else
current_limit = prop.intval / 1000;
dev_dbg(chip->dev, "online = %d, current_limit = %d\n",
online, current_limit);
smb349_enable_volatile_writes(chip);
smb349_set_usb_chg_current(chip, current_limit);
dev_dbg(chip->dev, "%s updating batt psy\n", __func__);
power_supply_changed(&chip->batt_psy);
}
static int show_cnfg_regs(struct seq_file *m, void *data)
{
struct smb349_charger *chip = m->private;
int rc;
u8 reg;
u8 addr;
for (addr = 0; addr <= LAST_CNFG_REG; addr++) {
rc = smb349_read_reg(chip, addr, &reg);
if (!rc)
seq_printf(m, "0x%02x = 0x%02x\n", addr, reg);
}
return 0;
}
static int cnfg_debugfs_open(struct inode *inode, struct file *file)
{
struct smb349_charger *chip = inode->i_private;
return single_open(file, show_cnfg_regs, chip);
}
static const struct file_operations cnfg_debugfs_ops = {
.owner = THIS_MODULE,
.open = cnfg_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int show_cmd_regs(struct seq_file *m, void *data)
{
struct smb349_charger *chip = m->private;
int rc;
u8 reg;
u8 addr;
for (addr = FIRST_CMD_REG; addr <= LAST_CMD_REG; addr++) {
rc = smb349_read_reg(chip, addr, &reg);
if (!rc)
seq_printf(m, "0x%02x = 0x%02x\n", addr, reg);
}
return 0;
}
static int cmd_debugfs_open(struct inode *inode, struct file *file)
{
struct smb349_charger *chip = inode->i_private;
return single_open(file, show_cmd_regs, chip);
}
static const struct file_operations cmd_debugfs_ops = {
.owner = THIS_MODULE,
.open = cmd_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int show_status_regs(struct seq_file *m, void *data)
{
struct smb349_charger *chip = m->private;
int rc;
u8 reg;
u8 addr;
for (addr = FIRST_STATUS_REG; addr <= LAST_STATUS_REG; addr++) {
rc = smb349_read_reg(chip, addr, &reg);
if (!rc)
seq_printf(m, "0x%02x = 0x%02x\n", addr, reg);
}
return 0;
}
static int status_debugfs_open(struct inode *inode, struct file *file)
{
struct smb349_charger *chip = inode->i_private;
return single_open(file, show_status_regs, chip);
}
static const struct file_operations status_debugfs_ops = {
.owner = THIS_MODULE,
.open = status_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int show_irq_count(struct seq_file *m, void *data)
{
int i, j, total = 0;
for (i = 0; i < ARRAY_SIZE(handlers); i++)
for (j = 0; j < 4; j++) {
seq_printf(m, "%s=%d\t(high=%d low=%d)\n",
handlers[i].irq_info[j].name,
handlers[i].irq_info[j].high
+ handlers[i].irq_info[j].low,
handlers[i].irq_info[j].high,
handlers[i].irq_info[j].low);
total += (handlers[i].irq_info[j].high
+ handlers[i].irq_info[j].low);
}
seq_printf(m, "\n\tTotal = %d\n", total);
return 0;
}
static int irq_count_debugfs_open(struct inode *inode, struct file *file)
{
struct smb349_charger *chip = inode->i_private;
return single_open(file, show_irq_count, chip);
}
static const struct file_operations irq_count_debugfs_ops = {
.owner = THIS_MODULE,
.open = irq_count_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int get_reg(void *data, u64 *val)
{
struct smb349_charger *chip = data;
int rc;
u8 temp;
rc = smb349_read_reg(chip, chip->peek_poke_address, &temp);
if (rc < 0) {
dev_err(chip->dev,
"Couldn't read reg %x rc = %d\n",
chip->peek_poke_address, rc);
return -EAGAIN;
}
*val = temp;
return 0;
}
static int set_reg(void *data, u64 val)
{
struct smb349_charger *chip = data;
int rc;
u8 temp;
temp = (u8) val;
rc = smb349_write_reg(chip, chip->peek_poke_address, temp);
if (rc < 0) {
dev_err(chip->dev,
"Couldn't write 0x%02x to 0x%02x rc= %d\n",
chip->peek_poke_address, temp, rc);
return -EAGAIN;
}
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(poke_poke_debug_ops, get_reg, set_reg, "0x%02llx\n");
static int force_irq_set(void *data, u64 val)
{
struct smb349_charger *chip = data;
smb349_chg_stat_handler(chip->client->irq, data);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(force_irq_ops, NULL, force_irq_set, "0x%02llx\n");
#ifdef DEBUG
static void dump_regs(struct smb349_charger *chip)
{
int rc;
u8 reg;
u8 addr;
for (addr = 0; addr <= LAST_CNFG_REG; addr++) {
rc = smb349_read_reg(chip, addr, &reg);
if (rc)
dev_err(chip->dev, "Couldn't read 0x%02x rc = %d\n",
addr, rc);
else
pr_debug("0x%02x = 0x%02x\n", addr, reg);
}
for (addr = FIRST_STATUS_REG; addr <= LAST_STATUS_REG; addr++) {
rc = smb349_read_reg(chip, addr, &reg);
if (rc)
dev_err(chip->dev, "Couldn't read 0x%02x rc = %d\n",
addr, rc);
else
pr_debug("0x%02x = 0x%02x\n", addr, reg);
}
for (addr = FIRST_CMD_REG; addr <= LAST_CMD_REG; addr++) {
rc = smb349_read_reg(chip, addr, &reg);
if (rc)
dev_err(chip->dev, "Couldn't read 0x%02x rc = %d\n",
addr, rc);
else
pr_debug("0x%02x = 0x%02x\n", addr, reg);
}
}
#else
static void dump_regs(struct smb349_charger *chip)
{
}
#endif
static int smb_parse_dt(struct smb349_charger *chip)
{
int rc;
enum of_gpio_flags gpio_flags;
struct device_node *node = chip->dev->of_node;
if (!node) {
dev_err(chip->dev, "device tree info. missing\n");
return -EINVAL;
}
chip->charging_disabled = of_property_read_bool(node,
"qcom,charging-disabled");
chip->chg_autonomous_mode = of_property_read_bool(node,
"qcom,chg-autonomous-mode");
chip->disable_apsd = of_property_read_bool(node, "qcom,disable-apsd");
rc = of_property_read_string(node, "qcom,bms-psy-name",
&chip->bms_psy_name);
if (rc)
chip->bms_psy_name = NULL;
chip->chg_valid_gpio = of_get_named_gpio_flags(node,
"qcom,chg-valid-gpio", 0, &gpio_flags);
if (!gpio_is_valid(chip->chg_valid_gpio))
dev_dbg(chip->dev, "Invalid chg-valid-gpio");
else
chip->chg_valid_act_low = gpio_flags & OF_GPIO_ACTIVE_LOW;
rc = of_property_read_u32(node, "qcom,fastchg-current-max-ma",
&chip->fastchg_current_max_ma);
if (rc)
chip->fastchg_current_max_ma = SMB349_FAST_CHG_MAX_MA;
chip->iterm_disabled = of_property_read_bool(node,
"qcom,iterm-disabled");
rc = of_property_read_u32(node, "qcom,iterm-ma", &chip->iterm_ma);
if (rc < 0)
chip->iterm_ma = -EINVAL;
rc = of_property_read_u32(node, "qcom,float-voltage-mv",
&chip->vfloat_mv);
if (rc < 0)
chip->vfloat_mv = -EINVAL;
rc = of_property_read_u32(node, "qcom,recharge-mv",
&chip->recharge_mv);
if (rc < 0)
chip->recharge_mv = -EINVAL;
chip->recharge_disabled = of_property_read_bool(node,
"qcom,recharge-disabled");
return 0;
}
static int determine_initial_state(struct smb349_charger *chip)
{
int rc;
u8 reg = 0;
rc = smb349_read_reg(chip, IRQ_B_REG, &reg);
if (rc) {
dev_err(chip->dev, "Couldn't read IRQ_B rc = %d\n", rc);
goto fail_init_status;
}
chip->battery_missing = (reg & IRQ_B_BATT_MISSING_BIT) ? true : false;
rc = smb349_read_reg(chip, IRQ_C_REG, &reg);
if (rc) {
dev_err(chip->dev, "Couldn't read IRQ_C rc = %d\n", rc);
goto fail_init_status;
}
chip->batt_full = (reg & IRQ_C_TERM_BIT) ? true : false;
rc = smb349_read_reg(chip, IRQ_A_REG, &reg);
if (rc < 0) {
dev_err(chip->dev, "Couldn't read irq A rc = %d\n", rc);
return rc;
}
if (reg & IRQ_A_HOT_HARD_BIT)
chip->batt_hot = true;
if (reg & IRQ_A_COLD_HARD_BIT)
chip->batt_cold = true;
if (reg & IRQ_A_HOT_SOFT_BIT)
chip->batt_warm = true;
if (reg & IRQ_A_COLD_SOFT_BIT)
chip->batt_cool = true;
rc = smb349_read_reg(chip, IRQ_E_REG, &reg);
if (rc) {
dev_err(chip->dev, "Couldn't read IRQ_E rc = %d\n", rc);
goto fail_init_status;
}
if (reg & IRQ_E_INPUT_UV_BIT) {
chg_uv(chip, 1);
} else {
chg_uv(chip, 0);
apsd_complete(chip, 1);
}
return 0;
fail_init_status:
dev_err(chip->dev, "Couldn't determine intial status\n");
return rc;
}
static int smb349_charger_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int rc, irq;
struct smb349_charger *chip;
struct power_supply *usb_psy;
u8 reg = 0;
usb_psy = power_supply_get_by_name("usb");
if (!usb_psy) {
dev_dbg(&client->dev, "USB psy not found; deferring probe\n");
return -EPROBE_DEFER;
}
chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
if (!chip) {
dev_err(&client->dev, "Couldn't allocate memory\n");
return -ENOMEM;
}
chip->client = client;
chip->dev = &client->dev;
chip->usb_psy = usb_psy;
chip->fake_battery_soc = -EINVAL;
/* probe the device to check if its actually connected */
rc = smb349_read_reg(chip, CHG_OTH_CURRENT_CTRL_REG, &reg);
if (rc) {
pr_err("Failed to detect SMB349, device may be absent\n");
return -ENODEV;
}
rc = smb_parse_dt(chip);
if (rc) {
dev_err(&client->dev, "Couldn't parse DT nodes rc=%d\n", rc);
return rc;
}
i2c_set_clientdata(client, chip);
chip->batt_psy.name = "battery";
chip->batt_psy.type = POWER_SUPPLY_TYPE_BATTERY;
chip->batt_psy.get_property = smb349_battery_get_property;
chip->batt_psy.set_property = smb349_battery_set_property;
chip->batt_psy.property_is_writeable =
smb349_batt_property_is_writeable;
chip->batt_psy.properties = smb349_battery_properties;
chip->batt_psy.num_properties = ARRAY_SIZE(smb349_battery_properties);
chip->batt_psy.external_power_changed = smb349_external_power_changed;
chip->resume_completed = true;
init_completion(&chip->resumed);
mutex_init(&chip->irq_complete);
rc = power_supply_register(chip->dev, &chip->batt_psy);
if (rc < 0) {
dev_err(&client->dev, "Couldn't register batt psy rc=%d\n",
rc);
return rc;
}
dump_regs(chip);
rc = smb349_regulator_init(chip);
if (rc) {
dev_err(&client->dev,
"Couldn't initialize smb349 ragulator rc=%d\n", rc);
return rc;
}
rc = smb349_hw_init(chip);
if (rc) {
dev_err(&client->dev,
"Couldn't intialize hardware rc=%d\n", rc);
goto fail_smb349_hw_init;
}
rc = determine_initial_state(chip);
if (rc) {
dev_err(&client->dev,
"Couldn't determine initial state rc=%d\n", rc);
goto fail_smb349_hw_init;
}
if (gpio_is_valid(chip->chg_valid_gpio)) {
rc = gpio_request(chip->chg_valid_gpio, "smb349_chg_valid");
if (rc) {
dev_err(&client->dev,
"gpio_request for %d failed rc=%d\n",
chip->chg_valid_gpio, rc);
goto fail_smb349_hw_init;
}
irq = gpio_to_irq(chip->chg_valid_gpio);
if (irq < 0) {
dev_err(&client->dev,
"Invalid chg_valid irq = %d\n", irq);
goto fail_chg_valid_irq;
}
rc = devm_request_threaded_irq(&client->dev, irq,
NULL, smb349_chg_valid_handler,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
"smb349_chg_valid_irq", chip);
if (rc) {
dev_err(&client->dev,
"Failed request_irq irq=%d, gpio=%d rc=%d\n",
irq, chip->chg_valid_gpio, rc);
goto fail_chg_valid_irq;
}
smb349_chg_valid_handler(irq, chip);
enable_irq_wake(irq);
}
/* STAT irq configuration */
if (client->irq) {
rc = devm_request_threaded_irq(&client->dev, client->irq, NULL,
smb349_chg_stat_handler,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"smb349_chg_stat_irq", chip);
if (rc) {
dev_err(&client->dev,
"Failed STAT irq=%d request rc = %d\n",
client->irq, rc);
goto fail_chg_valid_irq;
}
enable_irq_wake(client->irq);
}
chip->debug_root = debugfs_create_dir("smb349", NULL);
if (!chip->debug_root)
dev_err(chip->dev, "Couldn't create debug dir\n");
if (chip->debug_root) {
struct dentry *ent;
ent = debugfs_create_file("config_registers", S_IFREG | S_IRUGO,
chip->debug_root, chip,
&cnfg_debugfs_ops);
if (!ent)
dev_err(chip->dev,
"Couldn't create cnfg debug file rc = %d\n",
rc);
ent = debugfs_create_file("status_registers", S_IFREG | S_IRUGO,
chip->debug_root, chip,
&status_debugfs_ops);
if (!ent)
dev_err(chip->dev,
"Couldn't create status debug file rc = %d\n",
rc);
ent = debugfs_create_file("cmd_registers", S_IFREG | S_IRUGO,
chip->debug_root, chip,
&cmd_debugfs_ops);
if (!ent)
dev_err(chip->dev,
"Couldn't create cmd debug file rc = %d\n",
rc);
ent = debugfs_create_x32("address", S_IFREG | S_IWUSR | S_IRUGO,
chip->debug_root,
&(chip->peek_poke_address));
if (!ent)
dev_err(chip->dev,
"Couldn't create address debug file rc = %d\n",
rc);
ent = debugfs_create_file("data", S_IFREG | S_IWUSR | S_IRUGO,
chip->debug_root, chip,
&poke_poke_debug_ops);
if (!ent)
dev_err(chip->dev,
"Couldn't create data debug file rc = %d\n",
rc);
ent = debugfs_create_file("force_irq",
S_IFREG | S_IWUSR | S_IRUGO,
chip->debug_root, chip,
&force_irq_ops);
if (!ent)
dev_err(chip->dev,
"Couldn't create data debug file rc = %d\n",
rc);
ent = debugfs_create_file("irq_count", S_IFREG | S_IRUGO,
chip->debug_root, chip,
&irq_count_debugfs_ops);
if (!ent)
dev_err(chip->dev,
"Couldn't create count debug file rc = %d\n",
rc);
}
dump_regs(chip);
dev_info(chip->dev, "SMB349 successfully probed. charger=%d, batt=%d\n",
chip->chg_present, smb349_get_prop_batt_present(chip));
return 0;
fail_chg_valid_irq:
if (gpio_is_valid(chip->chg_valid_gpio))
gpio_free(chip->chg_valid_gpio);
fail_smb349_hw_init:
power_supply_unregister(&chip->batt_psy);
regulator_unregister(chip->otg_vreg.rdev);
return rc;
}
static int smb349_charger_remove(struct i2c_client *client)
{
struct smb349_charger *chip = i2c_get_clientdata(client);
power_supply_unregister(&chip->batt_psy);
if (gpio_is_valid(chip->chg_valid_gpio))
gpio_free(chip->chg_valid_gpio);
mutex_destroy(&chip->irq_complete);
debugfs_remove_recursive(chip->debug_root);
return 0;
}
static int smb349_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct smb349_charger *chip = i2c_get_clientdata(client);
mutex_lock(&chip->irq_complete);
chip->resume_completed = false;
mutex_unlock(&chip->irq_complete);
return 0;
}
static int smb349_suspend_noirq(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct smb349_charger *chip = i2c_get_clientdata(client);
if (chip->irq_waiting) {
pr_err_ratelimited("Aborting suspend, an interrupt was detected while suspending\n");
return -EBUSY;
}
return 0;
}
static int smb349_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct smb349_charger *chip = i2c_get_clientdata(client);
chip->resume_completed = true;
complete(&chip->resumed);
return 0;
}
static const struct dev_pm_ops smb349_pm_ops = {
.suspend = smb349_suspend,
.suspend_noirq = smb349_suspend_noirq,
.resume = smb349_resume,
};
static struct of_device_id smb349_match_table[] = {
{ .compatible = "qcom,smb349-charger",},
{ },
};
static const struct i2c_device_id smb349_charger_id[] = {
{"smb349-charger", 0},
{},
};
MODULE_DEVICE_TABLE(i2c, smb349_charger_id);
static struct i2c_driver smb349_charger_driver = {
.driver = {
.name = "smb349-charger",
.owner = THIS_MODULE,
.of_match_table = smb349_match_table,
.pm = &smb349_pm_ops,
},
.probe = smb349_charger_probe,
.remove = smb349_charger_remove,
.id_table = smb349_charger_id,
};
module_i2c_driver(smb349_charger_driver);
MODULE_DESCRIPTION("SMB349 Charger");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("i2c:smb349-charger");