PizzaG/Rtwo
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
Rtwo/kernel/motorola/sm8550/drivers/power/supply/qcom/smb1355-charger.c
PizzaG 279f0f5973 initial android 16 commit
2025-09-30 19:22:48 -05:00

1851 lines
45 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016-2020 The Linux Foundation. All rights reserved.
* Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#define pr_fmt(fmt) "SMB1355: %s: " fmt, __func__
#include <linux/device.h>
#include <linux/regmap.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/iio/consumer.h>
#include <linux/iio/iio.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/power_supply.h>
#include <linux/qti_power_supply.h>
#include <linux/workqueue.h>
#include <linux/pmic-voter.h>
#include <linux/string.h>
#include <dt-bindings/iio/qti_power_supply_iio.h>
/* SMB1355 registers, different than mentioned in smb-reg.h */
#define REVID_BASE 0x0100
#define I2C_SS_DIG_BASE 0x0E00
#define CHGR_BASE 0x1000
#define ANA2_BASE 0x1100
#define BATIF_BASE 0x1200
#define USBIN_BASE 0x1300
#define ANA1_BASE 0x1400
#define MISC_BASE 0x1600
#define REVID_MFG_ID_SPARE_REG (REVID_BASE + 0xFF)
#define I2C_SS_DIG_PMIC_SID_REG (I2C_SS_DIG_BASE + 0x45)
#define PMIC_SID_MASK GENMASK(3, 0)
#define PMIC_SID0_BIT BIT(0)
#define BATTERY_STATUS_2_REG (CHGR_BASE + 0x0B)
#define DISABLE_CHARGING_BIT BIT(3)
#define BATTERY_STATUS_3_REG (CHGR_BASE + 0x0C)
#define BATT_GT_PRE_TO_FAST_BIT BIT(4)
#define ENABLE_CHARGING_BIT BIT(3)
#define CHGR_CHARGING_ENABLE_CMD_REG (CHGR_BASE + 0x42)
#define CHARGING_ENABLE_CMD_BIT BIT(0)
#define CHGR_CFG2_REG (CHGR_BASE + 0x51)
#define CHG_EN_SRC_BIT BIT(7)
#define CHG_EN_POLARITY_BIT BIT(6)
#define CFG_REG (CHGR_BASE + 0x53)
#define CHG_OPTION_PIN_TRIM_BIT BIT(7)
#define BATN_SNS_CFG_BIT BIT(4)
#define CFG_TAPER_DIS_AFVC_BIT BIT(3)
#define BATFET_SHUTDOWN_CFG_BIT BIT(2)
#define VDISCHG_EN_CFG_BIT BIT(1)
#define VCHG_EN_CFG_BIT BIT(0)
#define FAST_CHARGE_CURRENT_CFG_REG (CHGR_BASE + 0x61)
#define FAST_CHARGE_CURRENT_SETTING_MASK GENMASK(7, 0)
#define CHGR_BATTOV_CFG_REG (CHGR_BASE + 0x70)
#define BATTOV_SETTING_MASK GENMASK(7, 0)
#define CHGR_PRE_TO_FAST_THRESHOLD_CFG_REG (CHGR_BASE + 0x74)
#define PRE_TO_FAST_CHARGE_THRESHOLD_MASK GENMASK(2, 0)
#define ANA2_TR_SBQ_ICL_1X_REF_OFFSET_REG (ANA2_BASE + 0xF5)
#define TR_SBQ_ICL_1X_REF_OFFSET GENMASK(4, 0)
#define POWER_MODE_HICCUP_CFG (BATIF_BASE + 0x72)
#define MAX_HICCUP_DUETO_BATDIS_MASK GENMASK(5, 2)
#define HICCUP_TIMEOUT_CFG_MASK GENMASK(1, 0)
#define BATIF_CFG_SMISC_BATID_REG (BATIF_BASE + 0x73)
#define CFG_SMISC_RBIAS_EXT_CTRL_BIT BIT(2)
#define SMB2CHG_BATIF_ENG_SMISC_DIETEMP (BATIF_BASE + 0xC0)
#define TDIE_COMPARATOR_THRESHOLD GENMASK(5, 0)
#define DIE_LOW_RANGE_BASE_DEGC 34
#define DIE_LOW_RANGE_DELTA 16
#define DIE_LOW_RANGE_MAX_DEGC 97
#define DIE_LOW_RANGE_SHIFT 4
#define BATIF_ENG_SCMISC_SPARE1_REG (BATIF_BASE + 0xC2)
#define EXT_BIAS_PIN_BIT BIT(2)
#define DIE_TEMP_COMP_HYST_BIT BIT(1)
#define ANA1_ENG_SREFGEN_CFG2_REG (ANA1_BASE + 0xC1)
#define VALLEY_COMPARATOR_EN_BIT BIT(0)
#define TEMP_COMP_STATUS_REG (MISC_BASE + 0x07)
#define TEMP_RST_HOT_BIT BIT(2)
#define TEMP_UB_HOT_BIT BIT(1)
#define TEMP_LB_HOT_BIT BIT(0)
#define SKIN_TEMP_SHIFT 4
#define MISC_RT_STS_REG (MISC_BASE + 0x10)
#define HARD_ILIMIT_RT_STS_BIT BIT(5)
#define BANDGAP_ENABLE_REG (MISC_BASE + 0x42)
#define BANDGAP_ENABLE_CMD_BIT BIT(0)
#define BARK_BITE_WDOG_PET_REG (MISC_BASE + 0x43)
#define BARK_BITE_WDOG_PET_BIT BIT(0)
#define CLOCK_REQUEST_REG (MISC_BASE + 0x44)
#define CLOCK_REQUEST_CMD_BIT BIT(0)
#define WD_CFG_REG (MISC_BASE + 0x51)
#define WATCHDOG_TRIGGER_AFP_EN_BIT BIT(7)
#define BARK_WDOG_INT_EN_BIT BIT(6)
#define BITE_WDOG_INT_EN_BIT BIT(5)
#define WDOG_IRQ_SFT_BIT BIT(2)
#define WDOG_TIMER_EN_ON_PLUGIN_BIT BIT(1)
#define WDOG_TIMER_EN_BIT BIT(0)
#define MISC_CUST_SDCDC_CLK_CFG_REG (MISC_BASE + 0xA0)
#define SWITCHER_CLK_FREQ_MASK GENMASK(3, 0)
#define MISC_CUST_SDCDC_ILIMIT_CFG_REG (MISC_BASE + 0xA1)
#define LS_VALLEY_THRESH_PCT_BIT BIT(3)
#define PCL_LIMIT_MASK GENMASK(1, 0)
#define SNARL_BARK_BITE_WD_CFG_REG (MISC_BASE + 0x53)
#define BITE_WDOG_DISABLE_CHARGING_CFG_BIT BIT(7)
#define SNARL_WDOG_TIMEOUT_MASK GENMASK(6, 4)
#define BARK_WDOG_TIMEOUT_MASK GENMASK(3, 2)
#define BITE_WDOG_TIMEOUT_MASK GENMASK(1, 0)
#define MISC_THERMREG_SRC_CFG_REG (MISC_BASE + 0x70)
#define BYP_THERM_CHG_CURR_ADJUST_BIT BIT(2)
#define THERMREG_SKIN_CMP_SRC_EN_BIT BIT(1)
#define THERMREG_DIE_CMP_SRC_EN_BIT BIT(0)
#define MISC_CHGR_TRIM_OPTIONS_REG (MISC_BASE + 0x55)
#define CMD_RBIAS_EN_BIT BIT(2)
#define MISC_ENG_SDCDC_RESERVE1_REG (MISC_BASE + 0xC4)
#define MINOFF_TIME_MASK BIT(6)
#define MISC_ENG_SDCDC_CFG8_REG (MISC_BASE + 0xC7)
#define DEAD_TIME_MASK GENMASK(2, 0)
#define DEAD_TIME_32NS 0x4
#define MISC_ENG_SDCDC_INPUT_CURRENT_CFG1_REG (MISC_BASE + 0xC8)
#define PROLONG_ISENSE_MASK GENMASK(7, 6)
#define PROLONG_ISENSEM_SHIFT 6
#define SAMPLE_HOLD_DELAY_MASK GENMASK(5, 2)
#define SAMPLE_HOLD_DELAY_SHIFT 2
#define DISABLE_ILIMIT_BIT BIT(0)
#define MISC_ENG_SDCDC_INPUT_CURRENT_CFG2_REG (MISC_BASE + 0xC9)
#define INPUT_CURRENT_LIMIT_SOURCE_BIT BIT(7)
#define TC_ISENSE_AMPLIFIER_MASK GENMASK(6, 4)
#define TC_ISENSE_AMPLIFIER_SHIFT 4
#define HS_II_CORRECTION_MASK GENMASK(3, 0)
#define MISC_ENG_SDCDC_RESERVE3_REG (MISC_BASE + 0xCB)
#define VDDCAP_SHORT_DISABLE_TRISTATE_BIT BIT(7)
#define PCL_SHUTDOWN_BUCK_BIT BIT(6)
#define ISENSE_TC_CORRECTION_BIT BIT(5)
#define II_SOURCE_BIT BIT(4)
#define SCALE_SLOPE_COMP_MASK GENMASK(3, 0)
#define USBIN_CURRENT_LIMIT_CFG_REG (USBIN_BASE + 0x70)
#define USB_TR_SCPATH_ICL_1X_GAIN_REG (USBIN_BASE + 0xF2)
#define TR_SCPATH_ICL_1X_GAIN_MASK GENMASK(5, 0)
#define IS_USBIN(mode) \
((mode == QTI_POWER_SUPPLY_PL_USBIN_USBIN) \
|| (mode == QTI_POWER_SUPPLY_PL_USBIN_USBIN_EXT))
#define PARALLEL_ENABLE_VOTER "PARALLEL_ENABLE_VOTER"
struct smb_chg_param {
const char *name;
u16 reg;
int min_u;
int max_u;
int step_u;
};
struct smb_params {
struct smb_chg_param fcc;
struct smb_chg_param ov;
struct smb_chg_param usb_icl;
};
static struct smb_params v1_params = {
.fcc = {
.name = "fast charge current",
.reg = FAST_CHARGE_CURRENT_CFG_REG,
.min_u = 0,
.max_u = 6000000,
.step_u = 25000,
},
.ov = {
.name = "battery over voltage",
.reg = CHGR_BATTOV_CFG_REG,
.min_u = 2450000,
.max_u = 5000000,
.step_u = 10000,
},
.usb_icl = {
.name = "usb input current limit",
.reg = USBIN_CURRENT_LIMIT_CFG_REG,
.min_u = 100000,
.max_u = 5000000,
.step_u = 30000,
},
};
struct smb_irq_info {
const char *name;
const irq_handler_t handler;
const bool wake;
int irq;
};
struct smb_dt_props {
bool disable_ctm;
int pl_mode;
int pl_batfet_mode;
bool hw_die_temp_mitigation;
u32 die_temp_threshold;
};
struct smb1355 {
struct device *dev;
char *name;
struct regmap *regmap;
int max_fcc;
struct smb_dt_props dt;
struct smb_params param;
struct mutex write_lock;
struct mutex suspend_lock;
struct power_supply *parallel_psy;
struct iio_dev *indio_dev;
struct iio_chan_spec *iio_chan;
int d_health;
int c_health;
int c_charger_temp_max;
int die_temp_deciDegC;
int suspended_usb_icl;
int charge_type;
int vbatt_uv;
int fcc_ua;
bool exit_die_temp;
struct delayed_work die_temp_work;
bool disabled;
bool suspended;
bool charging_enabled;
bool pin_status;
struct votable *irq_disable_votable;
struct votable *fcc_votable;
struct votable *fv_votable;
};
enum {
CONNECTOR_TEMP = 0,
DIE_TEMP,
};
struct smb1355_iio_channel {
const char *datasheet_name;
int channel_num;
enum iio_chan_type type;
long info_mask;
};
#define PL_IIO_CHAN(_name, _num, _type, _mask) \
{ \
.datasheet_name = _name, \
.channel_num = _num, \
.type = _type, \
.info_mask = _mask, \
},
#define PL_CHAN_ENERGY(_name, _num) \
PL_IIO_CHAN(_name, _num, IIO_ENERGY, \
BIT(IIO_CHAN_INFO_PROCESSED))
#define PL_CHAN_INDEX(_name, _num) \
PL_IIO_CHAN(_name, _num, IIO_INDEX, \
BIT(IIO_CHAN_INFO_PROCESSED))
#define PL_CHAN_TEMP(_name, _num) \
PL_IIO_CHAN(_name, _num, IIO_TEMP, \
BIT(IIO_CHAN_INFO_PROCESSED))
#define PL_CHAN_VOLT(_name, _num) \
PL_IIO_CHAN(_name, _num, IIO_VOLTAGE, \
BIT(IIO_CHAN_INFO_PROCESSED))
#define PL_CHAN_CURR(_name, _num) \
PL_IIO_CHAN(_name, _num, IIO_CURRENT, \
BIT(IIO_CHAN_INFO_PROCESSED))
static const struct smb1355_iio_channel smb1355_iio_channels[] = {
PL_CHAN_ENERGY("charge_type", PSY_IIO_CHARGE_TYPE)
PL_CHAN_INDEX("online", PSY_IIO_ONLINE)
PL_CHAN_INDEX("charging_enabled", PSY_IIO_CHARGING_ENABLED)
PL_CHAN_INDEX("pin_enabled", PSY_IIO_PIN_ENABLED)
PL_CHAN_INDEX("input_suspend", PSY_IIO_INPUT_SUSPEND)
PL_CHAN_TEMP("charger_temp", PSY_IIO_CHARGER_TEMP)
PL_CHAN_TEMP("charger_temp_max", PSY_IIO_CHARGER_TEMP_MAX)
PL_CHAN_VOLT("voltage_max", PSY_IIO_VOLTAGE_MAX)
PL_CHAN_CURR("constant_charge_current_max",
PSY_IIO_CONSTANT_CHARGE_CURRENT_MAX)
PL_CHAN_INDEX("parallel_mode", PSY_IIO_PARALLEL_MODE)
PL_CHAN_INDEX("connector_health", PSY_IIO_CONNECTOR_HEALTH)
PL_CHAN_INDEX("parallel_batfet_mode", PSY_IIO_PARALLEL_BATFET_MODE)
PL_CHAN_CURR("parallel_fcc_max", PSY_IIO_PARALLEL_FCC_MAX)
PL_CHAN_CURR("input_current_limited", PSY_IIO_INPUT_CURRENT_LIMITED)
PL_CHAN_CURR("min_icl", PSY_IIO_MIN_ICL)
PL_CHAN_CURR("current_max", PSY_IIO_CURRENT_MAX)
PL_CHAN_INDEX("set_ship_mode", PSY_IIO_SET_SHIP_MODE)
PL_CHAN_INDEX("die_health", PSY_IIO_DIE_HEALTH)
};
static bool is_secure(struct smb1355 *chip, int addr)
{
if (addr == CLOCK_REQUEST_REG || addr == I2C_SS_DIG_PMIC_SID_REG)
return true;
/* assume everything above 0xA0 is secure */
return (addr & 0xFF) >= 0xA0;
}
static bool is_voter_available(struct smb1355 *chip)
{
if (!chip->fcc_votable) {
chip->fcc_votable = find_votable("FCC");
if (!chip->fcc_votable) {
pr_debug("Couldn't find FCC votable\n");
return false;
}
}
if (!chip->fv_votable) {
chip->fv_votable = find_votable("FV");
if (!chip->fv_votable) {
pr_debug("Couldn't find FV votable\n");
return false;
}
}
return true;
}
static int smb1355_read(struct smb1355 *chip, u16 addr, u8 *val)
{
unsigned int temp;
int rc;
rc = regmap_read(chip->regmap, addr, &temp);
if (rc >= 0)
*val = (u8)temp;
return rc;
}
static int smb1355_masked_force_write(struct smb1355 *chip, u16 addr, u8 mask,
u8 val)
{
int rc;
mutex_lock(&chip->write_lock);
if (is_secure(chip, addr)) {
rc = regmap_write(chip->regmap, (addr & 0xFF00) | 0xD0, 0xA5);
if (rc < 0)
goto unlock;
}
rc = regmap_write_bits(chip->regmap, addr, mask, val);
unlock:
mutex_unlock(&chip->write_lock);
return rc;
}
static int smb1355_masked_write(struct smb1355 *chip, u16 addr, u8 mask, u8 val)
{
int rc;
mutex_lock(&chip->write_lock);
if (is_secure(chip, addr)) {
rc = regmap_write(chip->regmap, (addr & 0xFF00) | 0xD0, 0xA5);
if (rc < 0)
goto unlock;
}
rc = regmap_update_bits(chip->regmap, addr, mask, val);
unlock:
mutex_unlock(&chip->write_lock);
return rc;
}
static int smb1355_write(struct smb1355 *chip, u16 addr, u8 val)
{
int rc;
mutex_lock(&chip->write_lock);
if (is_secure(chip, addr)) {
rc = regmap_write(chip->regmap, (addr & ~(0xFF)) | 0xD0, 0xA5);
if (rc < 0)
goto unlock;
}
rc = regmap_write(chip->regmap, addr, val);
unlock:
mutex_unlock(&chip->write_lock);
return rc;
}
static int smb1355_set_charge_param(struct smb1355 *chip,
struct smb_chg_param *param, int val_u)
{
int rc;
u8 val_raw;
if (val_u > param->max_u || val_u < param->min_u) {
pr_err("%s: %d is out of range [%d, %d]\n",
param->name, val_u, param->min_u, param->max_u);
return -EINVAL;
}
val_raw = (val_u - param->min_u) / param->step_u;
rc = smb1355_write(chip, param->reg, val_raw);
if (rc < 0) {
pr_err("%s: Couldn't write 0x%02x to 0x%04x rc=%d\n",
param->name, val_raw, param->reg, rc);
return rc;
}
return rc;
}
static int smb1355_get_charge_param(struct smb1355 *chip,
struct smb_chg_param *param, int *val_u)
{
int rc;
u8 val_raw;
rc = smb1355_read(chip, param->reg, &val_raw);
if (rc < 0) {
pr_err("%s: Couldn't read from 0x%04x rc=%d\n",
param->name, param->reg, rc);
return rc;
}
*val_u = val_raw * param->step_u + param->min_u;
return rc;
}
#define UB_COMP_OFFSET_DEGC 34
#define DIE_TEMP_MEAS_PERIOD_MS 10000
static void die_temp_work(struct work_struct *work)
{
struct smb1355 *chip = container_of(work, struct smb1355,
die_temp_work.work);
int rc, i;
u8 temp_stat;
for (i = 0; i < BIT(5); i++) {
rc = smb1355_masked_write(chip, SMB2CHG_BATIF_ENG_SMISC_DIETEMP,
TDIE_COMPARATOR_THRESHOLD, i);
if (rc < 0) {
pr_err("Couldn't set temp comp threshold rc=%d\n", rc);
continue;
}
if (chip->exit_die_temp)
return;
/* wait for the comparator output to deglitch */
msleep(100);
rc = smb1355_read(chip, TEMP_COMP_STATUS_REG, &temp_stat);
if (rc < 0) {
pr_err("Couldn't read temp comp status rc=%d\n", rc);
continue;
}
if (!(temp_stat & TEMP_UB_HOT_BIT)) {
/* found the temp */
break;
}
}
chip->die_temp_deciDegC = 10 * (i + UB_COMP_OFFSET_DEGC);
schedule_delayed_work(&chip->die_temp_work,
msecs_to_jiffies(DIE_TEMP_MEAS_PERIOD_MS));
}
static int smb1355_get_prop_input_current_limited(struct smb1355 *chip,
int *val)
{
int rc;
u8 stat = 0;
rc = smb1355_read(chip, MISC_RT_STS_REG, &stat);
if (rc < 0)
pr_err("Couldn't read SMB1355_BATTERY_STATUS_3 rc=%d\n", rc);
*val = !!(stat & HARD_ILIMIT_RT_STS_BIT);
return 0;
}
static irqreturn_t smb1355_handle_chg_state_change(int irq, void *data)
{
struct smb1355 *chip = data;
if (chip->parallel_psy)
power_supply_changed(chip->parallel_psy);
return IRQ_HANDLED;
}
static irqreturn_t smb1355_handle_wdog_bark(int irq, void *data)
{
struct smb1355 *chip = data;
int rc;
rc = smb1355_write(chip, BARK_BITE_WDOG_PET_REG,
BARK_BITE_WDOG_PET_BIT);
if (rc < 0)
pr_err("Couldn't pet the dog rc=%d\n", rc);
return IRQ_HANDLED;
}
static irqreturn_t smb1355_handle_temperature_change(int irq, void *data)
{
struct smb1355 *chip = data;
if (chip->parallel_psy)
power_supply_changed(chip->parallel_psy);
return IRQ_HANDLED;
}
static int smb1355_determine_initial_status(struct smb1355 *chip)
{
smb1355_handle_temperature_change(0, chip);
return 0;
}
#define DEFAULT_DIE_TEMP_LOW_THRESHOLD 90
static int smb1355_parse_dt(struct smb1355 *chip)
{
struct device_node *node = chip->dev->of_node;
int rc = 0;
if (!node) {
pr_err("device tree node missing\n");
return -EINVAL;
}
chip->dt.disable_ctm =
of_property_read_bool(node, "qcom,disable-ctm");
/*
* If parallel-mode property is not present default
* parallel configuration is USBMID-USBMID.
*/
rc = of_property_read_u32(node,
"qcom,parallel-mode", &chip->dt.pl_mode);
if (rc < 0)
chip->dt.pl_mode = QTI_POWER_SUPPLY_PL_USBMID_USBMID;
/*
* If stacked-batfet property is not present default
* configuration is NON-STACKED-BATFET.
*/
chip->dt.pl_batfet_mode = QTI_POWER_SUPPLY_PL_NON_STACKED_BATFET;
if (of_property_read_bool(node, "qcom,stacked-batfet"))
chip->dt.pl_batfet_mode = QTI_POWER_SUPPLY_PL_STACKED_BATFET;
chip->dt.hw_die_temp_mitigation = of_property_read_bool(node,
"qcom,hw-die-temp-mitigation");
chip->dt.die_temp_threshold = DEFAULT_DIE_TEMP_LOW_THRESHOLD;
of_property_read_u32(node, "qcom,die-temp-threshold-degc",
&chip->dt.die_temp_threshold);
if (chip->dt.die_temp_threshold > DIE_LOW_RANGE_MAX_DEGC)
chip->dt.die_temp_threshold = DIE_LOW_RANGE_MAX_DEGC;
return 0;
}
static int smb1355_get_prop_batt_charge_type(struct smb1355 *chip,
int *val)
{
int rc;
u8 stat;
rc = smb1355_read(chip, BATTERY_STATUS_3_REG, &stat);
if (rc < 0) {
pr_err("Couldn't read SMB1355_BATTERY_STATUS_3 rc=%d\n", rc);
return rc;
}
if (stat & ENABLE_CHARGING_BIT) {
if (stat & BATT_GT_PRE_TO_FAST_BIT)
*val = POWER_SUPPLY_CHARGE_TYPE_FAST;
else
*val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
} else {
*val = POWER_SUPPLY_CHARGE_TYPE_NONE;
}
return rc;
}
static int smb1355_get_prop_health(struct smb1355 *chip, int type)
{
u8 temp;
int rc, shift;
/* Connector-temp uses skin-temp configuration */
shift = (type == CONNECTOR_TEMP) ? SKIN_TEMP_SHIFT : 0;
rc = smb1355_read(chip, TEMP_COMP_STATUS_REG, &temp);
if (rc < 0) {
pr_err("Couldn't read comp stat reg rc = %d\n", rc);
return POWER_SUPPLY_HEALTH_UNKNOWN;
}
if (temp & (TEMP_RST_HOT_BIT << shift))
return POWER_SUPPLY_HEALTH_OVERHEAT;
if (temp & (TEMP_UB_HOT_BIT << shift))
return POWER_SUPPLY_HEALTH_HOT;
if (temp & (TEMP_LB_HOT_BIT << shift))
return POWER_SUPPLY_HEALTH_WARM;
return POWER_SUPPLY_HEALTH_COOL;
}
static int smb1355_get_prop_voltage_max(struct smb1355 *chip, int *val)
{
int rc = 0;
mutex_lock(&chip->suspend_lock);
if (chip->suspended) {
*val = chip->vbatt_uv;
goto done;
}
rc = smb1355_get_charge_param(chip, &chip->param.ov, val);
if (rc < 0)
pr_err("failed to read vbatt rc=%d\n", rc);
else
chip->vbatt_uv = *val;
done:
mutex_unlock(&chip->suspend_lock);
return rc;
}
static int smb1355_get_prop_constant_charge_current_max(struct smb1355 *chip,
int *val)
{
int rc = 0;
mutex_lock(&chip->suspend_lock);
if (chip->suspended) {
*val = chip->fcc_ua;
goto done;
}
rc = smb1355_get_charge_param(chip, &chip->param.fcc, val);
if (rc < 0)
pr_err("failed to read fcc rc=%d\n", rc);
else
chip->fcc_ua = *val;
done:
mutex_unlock(&chip->suspend_lock);
return rc;
}
static int smb1355_get_prop_health_value(struct smb1355 *chip,
int *val, int type)
{
mutex_lock(&chip->suspend_lock);
if (chip->suspended) {
*val = (type == DIE_TEMP) ? chip->d_health :
chip->c_health;
} else {
*val = smb1355_get_prop_health(chip, (type == DIE_TEMP) ?
DIE_TEMP : CONNECTOR_TEMP);
if (type == DIE_TEMP)
chip->d_health = *val;
else
chip->c_health = *val;
}
mutex_unlock(&chip->suspend_lock);
return 0;
}
static int smb1355_get_prop_online(struct smb1355 *chip, int *val)
{
int rc = 0;
u8 stat;
mutex_lock(&chip->suspend_lock);
if (chip->suspended) {
*val = chip->charging_enabled;
goto done;
}
rc = smb1355_read(chip, BATTERY_STATUS_3_REG, &stat);
if (rc < 0) {
pr_err("failed to read BATTERY_STATUS_3_REG %d\n", rc);
} else {
*val = (bool)(stat & ENABLE_CHARGING_BIT);
chip->charging_enabled = *val;
}
done:
mutex_unlock(&chip->suspend_lock);
return rc;
}
static int smb1355_get_prop_pin_enabled(struct smb1355 *chip, int *val)
{
int rc = 0;
u8 stat;
mutex_lock(&chip->suspend_lock);
if (chip->suspended) {
*val = chip->pin_status;
goto done;
}
rc = smb1355_read(chip, BATTERY_STATUS_2_REG, &stat);
if (rc < 0) {
pr_err("failed to read BATTERY_STATUS_2_REG %d\n", rc);
} else {
*val = !(stat & DISABLE_CHARGING_BIT);
chip->pin_status = *val;
}
done:
mutex_unlock(&chip->suspend_lock);
return rc;
}
static int smb1355_get_prop_charge_type(struct smb1355 *chip, int *val)
{
int rc = 0;
/*
* In case of system suspend we should not allow
* register reads and writes to the device as it
* leads to i2c transaction failures.
*/
mutex_lock(&chip->suspend_lock);
if (chip->suspended) {
*val = chip->charge_type;
goto done;
}
rc = smb1355_get_prop_batt_charge_type(chip, val);
if (rc < 0)
pr_err("failed to read batt_charge_type %d\n", rc);
else
chip->charge_type = *val;
done:
mutex_unlock(&chip->suspend_lock);
return rc;
}
#define MIN_PARALLEL_ICL_UA 250000
#define SUSPEND_CURRENT_UA 2000
static int smb1355_set_parallel_charging(struct smb1355 *chip, bool disable)
{
int rc;
if (chip->disabled == disable)
return 0;
if (IS_USBIN(chip->dt.pl_mode)) {
/*
* Initialize ICL configuration to minimum value while
* depending upon the set icl configuration method to properly
* configure the ICL value. At the same time, cache the value
* of ICL to be reported as 2mA.
*/
chip->suspended_usb_icl = SUSPEND_CURRENT_UA;
smb1355_set_charge_param(chip,
&chip->param.usb_icl, MIN_PARALLEL_ICL_UA);
}
rc = smb1355_masked_write(chip, WD_CFG_REG, WDOG_TIMER_EN_BIT,
disable ? 0 : WDOG_TIMER_EN_BIT);
if (rc < 0) {
pr_err("Couldn't %s watchdog rc=%d\n",
disable ? "disable" : "enable", rc);
disable = true;
}
/*
* Configure charge enable for high polarity and
* When disabling charging set it to cmd register control(cmd bit=0)
* When enabling charging set it to pin control
*/
rc = smb1355_masked_write(chip, CHGR_CFG2_REG,
CHG_EN_POLARITY_BIT | CHG_EN_SRC_BIT,
disable ? 0 : CHG_EN_SRC_BIT);
if (rc < 0) {
pr_err("Couldn't configure charge enable source rc=%d\n", rc);
disable = true;
}
chip->die_temp_deciDegC = -EINVAL;
/* Only enable temperature measurement for s/w based mitigation */
if (!chip->dt.hw_die_temp_mitigation) {
if (disable) {
chip->exit_die_temp = true;
cancel_delayed_work_sync(&chip->die_temp_work);
} else {
/* start the work to measure temperature */
chip->exit_die_temp = false;
schedule_delayed_work(&chip->die_temp_work, 0);
}
}
if (chip->irq_disable_votable)
vote(chip->irq_disable_votable, PARALLEL_ENABLE_VOTER,
disable, 0);
rc = smb1355_masked_write(chip, BANDGAP_ENABLE_REG,
BANDGAP_ENABLE_CMD_BIT,
disable ? 0 : BANDGAP_ENABLE_CMD_BIT);
if (rc < 0) {
pr_err("Couldn't configure bandgap enable rc=%d\n", rc);
return rc;
}
chip->disabled = disable;
return 0;
}
static int smb1355_set_current_max(struct smb1355 *chip, int curr)
{
int rc = 0;
if (!IS_USBIN(chip->dt.pl_mode))
return 0;
if ((curr / 1000) < 100) {
/* disable parallel path (ICL < 100mA) */
rc = smb1355_set_parallel_charging(chip, true);
} else {
rc = smb1355_set_parallel_charging(chip, false);
if (rc < 0)
return rc;
rc = smb1355_set_charge_param(chip,
&chip->param.usb_icl, curr);
chip->suspended_usb_icl = 0;
}
return rc;
}
static int smb1355_clk_request(struct smb1355 *chip, bool enable)
{
int rc;
rc = smb1355_masked_force_write(chip, CLOCK_REQUEST_REG,
CLOCK_REQUEST_CMD_BIT,
enable ? CLOCK_REQUEST_CMD_BIT : 0);
if (rc < 0)
pr_err("Couldn't %s clock rc=%d\n",
enable ? "enable" : "disable", rc);
return rc;
}
static int smb1355_parallel_get_prop(struct power_supply *psy,
enum power_supply_property prop,
union power_supply_propval *pval)
{
struct smb1355 *chip = power_supply_get_drvdata(psy);
switch (prop) {
case POWER_SUPPLY_PROP_MODEL_NAME:
pval->strval = chip->name;
break;
default:
pr_err_ratelimited("parallel psy get prop %d not supported\n",
prop);
return -EINVAL;
}
return 0;
}
/*****************************
* PARALLEL PSY REGISTRATION *
*****************************/
static enum power_supply_property smb1355_parallel_props[] = {
POWER_SUPPLY_PROP_MODEL_NAME,
};
static struct power_supply_desc parallel_psy_desc = {
.name = "parallel",
.type = POWER_SUPPLY_TYPE_MAINS,
.properties = smb1355_parallel_props,
.num_properties = ARRAY_SIZE(smb1355_parallel_props),
.get_property = smb1355_parallel_get_prop,
};
static int smb1355_init_parallel_psy(struct smb1355 *chip)
{
struct power_supply_config parallel_cfg = {};
parallel_cfg.drv_data = chip;
parallel_cfg.of_node = chip->dev->of_node;
/* change to smb1355's property list */
parallel_psy_desc.properties = smb1355_parallel_props;
parallel_psy_desc.num_properties = ARRAY_SIZE(smb1355_parallel_props);
chip->parallel_psy = devm_power_supply_register(chip->dev,
&parallel_psy_desc,
&parallel_cfg);
if (IS_ERR(chip->parallel_psy)) {
pr_err("Couldn't register parallel power supply\n");
return PTR_ERR(chip->parallel_psy);
}
return 0;
}
static int smb1355_iio_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val1, int *val2, long mask)
{
struct smb1355 *chip = iio_priv(indio_dev);
int rc = 0;
*val1 = 0;
switch (chan->channel) {
case PSY_IIO_CHARGE_TYPE:
rc = smb1355_get_prop_charge_type(chip, val1);
break;
case PSY_IIO_CHARGING_ENABLED:
case PSY_IIO_ONLINE:
rc = smb1355_get_prop_online(chip, val1);
break;
case PSY_IIO_PIN_ENABLED:
rc = smb1355_get_prop_pin_enabled(chip, val1);
break;
case PSY_IIO_CHARGER_TEMP:
*val1 = chip->die_temp_deciDegC;
break;
case PSY_IIO_CHARGER_TEMP_MAX:
/*
* In case of h/w controlled die_temp mitigation,
* die_temp/die_temp_max can not be reported as this
* requires run time manipulation of DIE_TEMP low
* threshold which will interfere with h/w mitigation
* scheme.
*/
if (chip->dt.hw_die_temp_mitigation)
*val1 = -EINVAL;
else
*val1 = chip->c_charger_temp_max;
break;
case PSY_IIO_INPUT_SUSPEND:
*val1 = chip->disabled;
break;
case PSY_IIO_VOLTAGE_MAX:
rc = smb1355_get_prop_voltage_max(chip, val1);
break;
case PSY_IIO_CONSTANT_CHARGE_CURRENT_MAX:
rc = smb1355_get_prop_constant_charge_current_max(chip, val1);
break;
case PSY_IIO_PARALLEL_MODE:
*val1 = chip->dt.pl_mode;
break;
case PSY_IIO_CONNECTOR_HEALTH:
if (chip->c_health == -EINVAL)
rc = smb1355_get_prop_health_value(chip, val1,
CONNECTOR_TEMP);
else
*val1 = chip->c_health;
break;
case PSY_IIO_DIE_HEALTH:
rc = smb1355_get_prop_health_value(chip, val1, DIE_TEMP);
break;
case PSY_IIO_PARALLEL_BATFET_MODE:
*val1 = chip->dt.pl_batfet_mode;
break;
case PSY_IIO_INPUT_CURRENT_LIMITED:
if (IS_USBIN(chip->dt.pl_mode))
rc = smb1355_get_prop_input_current_limited(
chip, val1);
else
*val1 = 0;
break;
case PSY_IIO_CURRENT_MAX:
if (IS_USBIN(chip->dt.pl_mode)) {
/* Report cached ICL until its configured correctly */
if (chip->suspended_usb_icl)
*val1 = chip->suspended_usb_icl;
else
rc = smb1355_get_charge_param(chip,
&chip->param.usb_icl, val1);
} else {
*val1 = 0;
}
break;
case PSY_IIO_MIN_ICL:
*val1 = MIN_PARALLEL_ICL_UA;
break;
case PSY_IIO_PARALLEL_FCC_MAX:
*val1 = chip->max_fcc;
break;
case PSY_IIO_SET_SHIP_MODE:
/* Not in ship mode as long as device is active */
*val1 = 0;
break;
default:
pr_err_ratelimited("SMB1355 IIO channel %x not supported\n",
chan->channel);
return -EINVAL;
}
if (rc < 0) {
pr_debug("Couldn't read channel %x rc = %d\n",
chan->channel, rc);
return -ENODATA;
}
return IIO_VAL_INT;
}
static int smb1355_iio_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val1, int val2, long mask)
{
struct smb1355 *chip = iio_priv(indio_dev);
int rc = 0;
mutex_lock(&chip->suspend_lock);
if (chip->suspended) {
pr_debug("SMB1355 IIO write channel %d\n",
chan->channel);
goto done;
}
switch (chan->channel) {
case PSY_IIO_INPUT_SUSPEND:
rc = smb1355_set_parallel_charging(chip, (bool)val1);
break;
case PSY_IIO_CURRENT_MAX:
rc = smb1355_set_current_max(chip, val1);
break;
case PSY_IIO_VOLTAGE_MAX:
rc = smb1355_set_charge_param(chip, &chip->param.ov,
val1);
break;
case PSY_IIO_CONSTANT_CHARGE_CURRENT_MAX:
rc = smb1355_set_charge_param(chip, &chip->param.fcc,
val1);
break;
case PSY_IIO_CONNECTOR_HEALTH:
chip->c_health = val1;
power_supply_changed(chip->parallel_psy);
break;
case PSY_IIO_CHARGER_TEMP_MAX:
chip->c_charger_temp_max = val1;
break;
case PSY_IIO_SET_SHIP_MODE:
if (!val1)
break;
rc = smb1355_clk_request(chip, false);
break;
default:
rc = -EINVAL;
}
if (rc < 0)
pr_debug("Couldn't write to channel %x rc = %d\n",
chan->channel, rc);
done:
mutex_unlock(&chip->suspend_lock);
return rc;
}
static int smb1355_iio_of_xlate(struct iio_dev *indio_dev,
const struct of_phandle_args *iiospec)
{
struct smb1355 *chip = iio_priv(indio_dev);
struct iio_chan_spec *iio_chan = chip->iio_chan;
int i;
for (i = 0; i < ARRAY_SIZE(smb1355_iio_channels);
i++, iio_chan++)
if (iio_chan->channel == iiospec->args[0])
return i;
return -EINVAL;
}
static const struct iio_info smb1355_iio_info = {
.read_raw = smb1355_iio_read_raw,
.write_raw = smb1355_iio_write_raw,
.of_xlate = smb1355_iio_of_xlate,
};
static int smb1355_init_iio_psy(struct smb1355 *chip)
{
struct iio_dev *indio_dev = chip->indio_dev;
struct iio_chan_spec *chan;
int smb1355_num_iio_channels = ARRAY_SIZE(smb1355_iio_channels);
int rc, i;
chip->iio_chan = devm_kcalloc(chip->dev,
smb1355_num_iio_channels,
sizeof(*chip->iio_chan),
GFP_KERNEL);
if (!chip->iio_chan)
return -ENOMEM;
indio_dev->info = &smb1355_iio_info;
indio_dev->dev.parent = chip->dev;
indio_dev->dev.of_node = chip->dev->of_node;
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->channels = chip->iio_chan;
indio_dev->num_channels = smb1355_num_iio_channels;
indio_dev->name = "smb1355-charger";
for (i = 0; i < smb1355_num_iio_channels; i++) {
chan = &chip->iio_chan[i];
chan->address = i;
chan->channel = smb1355_iio_channels[i].channel_num;
chan->type = smb1355_iio_channels[i].type;
chan->datasheet_name =
smb1355_iio_channels[i].datasheet_name;
chan->extend_name =
smb1355_iio_channels[i].datasheet_name;
chan->info_mask_separate =
smb1355_iio_channels[i].info_mask;
}
rc = devm_iio_device_register(chip->dev, indio_dev);
if (rc) {
pr_err("Failed to register SMB1355 Parallel IIO device, rc=%d\n",
rc);
return rc;
}
return rc;
}
/***************************
* HARDWARE INITIALIZATION *
***************************/
#define MFG_ID_SMB1354 0x01
#define MFG_ID_SMB1355 0xFF
#define SMB1354_MAX_PARALLEL_FCC_UA 2500000
#define SMB1355_MAX_PARALLEL_FCC_UA 6000000
static int smb1355_detect_version(struct smb1355 *chip)
{
int rc;
u8 val;
rc = smb1355_read(chip, REVID_MFG_ID_SPARE_REG, &val);
if (rc < 0) {
pr_err("Unable to read REVID rc=%d\n", rc);
return rc;
}
switch (val) {
case MFG_ID_SMB1354:
chip->name = "smb1354";
chip->max_fcc = SMB1354_MAX_PARALLEL_FCC_UA;
break;
case MFG_ID_SMB1355:
chip->name = "smb1355";
chip->max_fcc = SMB1355_MAX_PARALLEL_FCC_UA;
break;
default:
pr_err("Invalid value of REVID val=%d\n", val);
return -EINVAL;
}
return rc;
}
static int smb1355_tskin_sensor_config(struct smb1355 *chip)
{
int rc;
if (chip->dt.disable_ctm) {
/*
* the TSKIN sensor with external resistor needs a bias,
* disable it here.
*/
rc = smb1355_masked_write(chip, BATIF_ENG_SCMISC_SPARE1_REG,
EXT_BIAS_PIN_BIT, 0);
if (rc < 0) {
pr_err("Couldn't enable ext bias pin path rc=%d\n",
rc);
return rc;
}
rc = smb1355_masked_write(chip, BATIF_CFG_SMISC_BATID_REG,
CFG_SMISC_RBIAS_EXT_CTRL_BIT, 0);
if (rc < 0) {
pr_err("Couldn't set BATIF_CFG_SMISC_BATID rc=%d\n",
rc);
return rc;
}
rc = smb1355_masked_write(chip, MISC_CHGR_TRIM_OPTIONS_REG,
CMD_RBIAS_EN_BIT, 0);
if (rc < 0) {
pr_err("Couldn't set MISC_CHGR_TRIM_OPTIONS rc=%d\n",
rc);
return rc;
}
/* disable skin temperature comparator source */
rc = smb1355_masked_write(chip, MISC_THERMREG_SRC_CFG_REG,
THERMREG_SKIN_CMP_SRC_EN_BIT, 0);
if (rc < 0) {
pr_err("Couldn't set Skin temp comparator src rc=%d\n",
rc);
return rc;
}
} else {
/*
* the TSKIN sensor with external resistor needs a bias,
* enable it here.
*/
rc = smb1355_masked_write(chip, BATIF_ENG_SCMISC_SPARE1_REG,
EXT_BIAS_PIN_BIT, EXT_BIAS_PIN_BIT);
if (rc < 0) {
pr_err("Couldn't enable ext bias pin path rc=%d\n",
rc);
return rc;
}
rc = smb1355_masked_write(chip, BATIF_CFG_SMISC_BATID_REG,
CFG_SMISC_RBIAS_EXT_CTRL_BIT,
CFG_SMISC_RBIAS_EXT_CTRL_BIT);
if (rc < 0) {
pr_err("Couldn't set BATIF_CFG_SMISC_BATID rc=%d\n",
rc);
return rc;
}
rc = smb1355_masked_write(chip, MISC_CHGR_TRIM_OPTIONS_REG,
CMD_RBIAS_EN_BIT,
CMD_RBIAS_EN_BIT);
if (rc < 0) {
pr_err("Couldn't set MISC_CHGR_TRIM_OPTIONS rc=%d\n",
rc);
return rc;
}
/* Enable skin temperature comparator source */
rc = smb1355_masked_write(chip, MISC_THERMREG_SRC_CFG_REG,
THERMREG_SKIN_CMP_SRC_EN_BIT,
THERMREG_SKIN_CMP_SRC_EN_BIT);
if (rc < 0) {
pr_err("Couldn't set Skin temp comparator src rc=%d\n",
rc);
return rc;
}
}
return rc;
}
static int smb1355_init_hw(struct smb1355 *chip)
{
int rc;
u8 val, range;
/* request clock always on */
rc = smb1355_clk_request(chip, true);
if (rc < 0)
return rc;
/* Change to let SMB1355 only respond to address 0x0C */
rc = smb1355_masked_write(chip, I2C_SS_DIG_PMIC_SID_REG,
PMIC_SID_MASK, PMIC_SID0_BIT);
if (rc < 0) {
pr_err("Couldn't configure the I2C_SS_DIG_PMIC_SID_REG rc=%d\n",
rc);
return rc;
}
/* disable charging when watchdog bites & set bite-timeout to 8secs */
val = BITE_WDOG_DISABLE_CHARGING_CFG_BIT | 0x3;
rc = smb1355_masked_write(chip, SNARL_BARK_BITE_WD_CFG_REG,
BITE_WDOG_DISABLE_CHARGING_CFG_BIT |
BITE_WDOG_TIMEOUT_MASK, val);
if (rc < 0) {
pr_err("Couldn't configure the watchdog bite rc=%d\n", rc);
return rc;
}
/* enable watchdog bark and bite interrupts, and disable the watchdog */
rc = smb1355_masked_write(chip, WD_CFG_REG, WDOG_TIMER_EN_BIT
| WDOG_TIMER_EN_ON_PLUGIN_BIT | BITE_WDOG_INT_EN_BIT
| BARK_WDOG_INT_EN_BIT,
BITE_WDOG_INT_EN_BIT | BARK_WDOG_INT_EN_BIT);
if (rc < 0) {
pr_err("Couldn't configure the watchdog rc=%d\n", rc);
return rc;
}
/*
* Disable command based SMB1355 enablement and disable parallel
* charging path by switching to command based mode.
*/
rc = smb1355_masked_write(chip, CHGR_CHARGING_ENABLE_CMD_REG,
CHARGING_ENABLE_CMD_BIT, 0);
if (rc < 0) {
pr_err("Coudln't configure command bit, rc=%d\n", rc);
return rc;
}
rc = smb1355_set_parallel_charging(chip, true);
if (rc < 0) {
pr_err("Couldn't disable parallel path rc=%d\n", rc);
return rc;
}
/* initialize FCC to 0 */
rc = smb1355_set_charge_param(chip, &chip->param.fcc, 0);
if (rc < 0) {
pr_err("Couldn't set 0 FCC rc=%d\n", rc);
return rc;
}
/* HICCUP setting, unlimited retry with 250ms interval */
rc = smb1355_masked_write(chip, POWER_MODE_HICCUP_CFG,
HICCUP_TIMEOUT_CFG_MASK | MAX_HICCUP_DUETO_BATDIS_MASK,
0);
if (rc < 0) {
pr_err("Couldn't set HICCUP interval rc=%d\n",
rc);
return rc;
}
/* enable parallel current sensing */
rc = smb1355_masked_write(chip, CFG_REG,
VCHG_EN_CFG_BIT, VCHG_EN_CFG_BIT);
if (rc < 0) {
pr_err("Couldn't enable parallel current sensing rc=%d\n",
rc);
return rc;
}
/* set Pre-to-Fast Charging Threshold 2.6V */
rc = smb1355_masked_write(chip, CHGR_PRE_TO_FAST_THRESHOLD_CFG_REG,
PRE_TO_FAST_CHARGE_THRESHOLD_MASK, 0);
if (rc < 0) {
pr_err("Couldn't set PRE_TO_FAST_CHARGE_THRESHOLD rc=%d\n",
rc);
return rc;
}
/* Extend min-offtime same as blanking time */
rc = smb1355_masked_write(chip, MISC_ENG_SDCDC_RESERVE1_REG,
MINOFF_TIME_MASK, 0);
if (rc < 0) {
pr_err("Couldn't set MINOFF_TIME rc=%d\n", rc);
return rc;
}
/* Set dead-time to 32ns */
rc = smb1355_masked_write(chip, MISC_ENG_SDCDC_CFG8_REG,
DEAD_TIME_MASK, DEAD_TIME_32NS);
if (rc < 0) {
pr_err("Couldn't set DEAD_TIME to 32ns rc=%d\n", rc);
return rc;
}
/* Configure DIE temp Low threshold */
if (chip->dt.hw_die_temp_mitigation) {
range = (chip->dt.die_temp_threshold - DIE_LOW_RANGE_BASE_DEGC)
/ (DIE_LOW_RANGE_DELTA);
val = (chip->dt.die_temp_threshold
- ((range * DIE_LOW_RANGE_DELTA)
+ DIE_LOW_RANGE_BASE_DEGC))
% DIE_LOW_RANGE_DELTA;
rc = smb1355_masked_write(chip, SMB2CHG_BATIF_ENG_SMISC_DIETEMP,
TDIE_COMPARATOR_THRESHOLD,
(range << DIE_LOW_RANGE_SHIFT) | val);
if (rc < 0) {
pr_err("Couldn't set temp comp threshold rc=%d\n", rc);
return rc;
}
}
/*
* Enable thermal Die temperature comparator source and
* enable hardware controlled current adjustment for die temp
* if charger is configured in h/w controlled die temp mitigation.
*/
val = THERMREG_DIE_CMP_SRC_EN_BIT;
if (!chip->dt.hw_die_temp_mitigation)
val |= BYP_THERM_CHG_CURR_ADJUST_BIT;
rc = smb1355_masked_write(chip, MISC_THERMREG_SRC_CFG_REG,
THERMREG_DIE_CMP_SRC_EN_BIT | BYP_THERM_CHG_CURR_ADJUST_BIT,
val);
if (rc < 0) {
pr_err("Couldn't set Skin temperature comparator src rc=%d\n",
rc);
return rc;
}
/*
* Disable hysterisis for die temperature. This is so that sw can run
* stepping scheme quickly
*/
val = chip->dt.hw_die_temp_mitigation ? DIE_TEMP_COMP_HYST_BIT : 0;
rc = smb1355_masked_write(chip, BATIF_ENG_SCMISC_SPARE1_REG,
DIE_TEMP_COMP_HYST_BIT, val);
if (rc < 0) {
pr_err("Couldn't disable hyst. for die rc=%d\n", rc);
return rc;
}
/* Enable valley current comparator all the time */
rc = smb1355_masked_write(chip, ANA1_ENG_SREFGEN_CFG2_REG,
VALLEY_COMPARATOR_EN_BIT, VALLEY_COMPARATOR_EN_BIT);
if (rc < 0) {
pr_err("Couldn't enable valley current comparator rc=%d\n", rc);
return rc;
}
/* Set LS_VALLEY threshold to 85% */
rc = smb1355_masked_write(chip, MISC_CUST_SDCDC_ILIMIT_CFG_REG,
LS_VALLEY_THRESH_PCT_BIT, LS_VALLEY_THRESH_PCT_BIT);
if (rc < 0) {
pr_err("Couldn't set LS valley threshold to 85pc rc=%d\n", rc);
return rc;
}
/* For SMB1354, set PCL to 8.6 A */
if (!strcmp(chip->name, "smb1354")) {
rc = smb1355_masked_write(chip, MISC_CUST_SDCDC_ILIMIT_CFG_REG,
PCL_LIMIT_MASK, PCL_LIMIT_MASK);
if (rc < 0) {
pr_err("Couldn't set PCL limit to 8.6A rc=%d\n", rc);
return rc;
}
}
rc = smb1355_tskin_sensor_config(chip);
if (rc < 0) {
pr_err("Couldn't configure tskin regs rc=%d\n", rc);
return rc;
}
/* USBIN-USBIN configuration */
if (IS_USBIN(chip->dt.pl_mode)) {
/* set swicther clock frequency to 700kHz */
rc = smb1355_masked_write(chip, MISC_CUST_SDCDC_CLK_CFG_REG,
SWITCHER_CLK_FREQ_MASK, 0x03);
if (rc < 0) {
pr_err("Couldn't set MISC_CUST_SDCDC_CLK_CFG rc=%d\n",
rc);
return rc;
}
/*
* configure compensation for input current limit (ICL) loop
* accuracy, scale slope compensation using 30k resistor.
*/
rc = smb1355_masked_write(chip, MISC_ENG_SDCDC_RESERVE3_REG,
II_SOURCE_BIT | SCALE_SLOPE_COMP_MASK,
II_SOURCE_BIT);
if (rc < 0) {
pr_err("Couldn't set MISC_ENG_SDCDC_RESERVE3_REG rc=%d\n",
rc);
return rc;
}
/* configuration to improve ICL accuracy */
rc = smb1355_masked_write(chip,
MISC_ENG_SDCDC_INPUT_CURRENT_CFG1_REG,
PROLONG_ISENSE_MASK | SAMPLE_HOLD_DELAY_MASK,
((uint8_t)0x0C << SAMPLE_HOLD_DELAY_SHIFT));
if (rc < 0) {
pr_err("Couldn't set MISC_ENG_SDCDC_INPUT_CURRENT_CFG1_REG rc=%d\n",
rc);
return rc;
}
rc = smb1355_masked_write(chip,
MISC_ENG_SDCDC_INPUT_CURRENT_CFG2_REG,
INPUT_CURRENT_LIMIT_SOURCE_BIT
| HS_II_CORRECTION_MASK,
INPUT_CURRENT_LIMIT_SOURCE_BIT | 0xC);
if (rc < 0) {
pr_err("Couldn't set MISC_ENG_SDCDC_INPUT_CURRENT_CFG2_REG rc=%d\n",
rc);
return rc;
}
/* configure DAC offset */
rc = smb1355_masked_write(chip,
ANA2_TR_SBQ_ICL_1X_REF_OFFSET_REG,
TR_SBQ_ICL_1X_REF_OFFSET, 0x00);
if (rc < 0) {
pr_err("Couldn't set ANA2_TR_SBQ_ICL_1X_REF_OFFSET_REG rc=%d\n",
rc);
return rc;
}
/* configure DAC gain */
rc = smb1355_masked_write(chip, USB_TR_SCPATH_ICL_1X_GAIN_REG,
TR_SCPATH_ICL_1X_GAIN_MASK, 0x22);
if (rc < 0) {
pr_err("Couldn't set USB_TR_SCPATH_ICL_1X_GAIN_REG rc=%d\n",
rc);
return rc;
}
}
return 0;
}
/**************************
* INTERRUPT REGISTRATION *
**************************/
static struct smb_irq_info smb1355_irqs[] = {
[0] = {
.name = "wdog-bark",
.handler = smb1355_handle_wdog_bark,
.wake = true,
},
[1] = {
.name = "chg-state-change",
.handler = smb1355_handle_chg_state_change,
.wake = true,
},
[2] = {
.name = "temperature-change",
.handler = smb1355_handle_temperature_change,
},
};
static int smb1355_get_irq_index_byname(const char *irq_name)
{
int i;
for (i = 0; i < ARRAY_SIZE(smb1355_irqs); i++) {
if (strcmp(smb1355_irqs[i].name, irq_name) == 0)
return i;
}
return -ENOENT;
}
static int smb1355_request_interrupt(struct smb1355 *chip,
struct device_node *node,
const char *irq_name)
{
int rc = 0, irq, irq_index;
irq = of_irq_get_byname(node, irq_name);
if (irq < 0) {
pr_err("Couldn't get irq %s byname\n", irq_name);
return irq;
}
irq_index = smb1355_get_irq_index_byname(irq_name);
if (irq_index < 0) {
pr_err("%s is not a defined irq\n", irq_name);
return irq_index;
}
if (!smb1355_irqs[irq_index].handler)
return 0;
rc = devm_request_threaded_irq(chip->dev, irq, NULL,
smb1355_irqs[irq_index].handler,
IRQF_ONESHOT, irq_name, chip);
if (rc < 0) {
pr_err("Couldn't request irq %d rc=%d\n", irq, rc);
return rc;
}
smb1355_irqs[irq_index].irq = irq;
if (smb1355_irqs[irq_index].wake)
enable_irq_wake(irq);
return rc;
}
static int smb1355_request_interrupts(struct smb1355 *chip)
{
struct device_node *node = chip->dev->of_node;
struct device_node *child;
int rc = 0;
const char *name;
struct property *prop;
for_each_available_child_of_node(node, child) {
of_property_for_each_string(child, "interrupt-names",
prop, name) {
rc = smb1355_request_interrupt(chip, child, name);
if (rc < 0) {
pr_err("Couldn't request interrupt %s rc=%d\n",
name, rc);
return rc;
}
}
}
return rc;
}
static int smb1355_irq_disable_callback(struct votable *votable, void *data,
int disable, const char *client)
{
int i;
for (i = 0; i < ARRAY_SIZE(smb1355_irqs); i++) {
if (smb1355_irqs[i].irq) {
if (disable)
disable_irq(smb1355_irqs[i].irq);
else
enable_irq(smb1355_irqs[i].irq);
}
}
return 0;
}
/*********
* PROBE *
*********/
static const struct of_device_id match_table[] = {
{
.compatible = "qcom,smb1355",
},
{ },
};
static int smb1355_probe(struct platform_device *pdev)
{
struct smb1355 *chip;
const struct of_device_id *id;
struct iio_dev *indio_dev;
int rc = 0;
indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*chip));
if (!indio_dev)
return -ENOMEM;
chip = iio_priv(indio_dev);
chip->indio_dev = indio_dev;
chip->dev = &pdev->dev;
chip->param = v1_params;
chip->c_health = -EINVAL;
chip->d_health = -EINVAL;
chip->c_charger_temp_max = -EINVAL;
mutex_init(&chip->write_lock);
mutex_init(&chip->suspend_lock);
INIT_DELAYED_WORK(&chip->die_temp_work, die_temp_work);
chip->disabled = false;
chip->die_temp_deciDegC = -EINVAL;
chip->regmap = dev_get_regmap(chip->dev->parent, NULL);
if (!chip->regmap) {
pr_err("parent regmap is missing\n");
return -EINVAL;
}
id = of_match_device(of_match_ptr(match_table), chip->dev);
if (!id) {
pr_err("Couldn't find a matching device\n");
return -ENODEV;
}
rc = smb1355_detect_version(chip);
if (rc < 0) {
pr_err("Couldn't detect SMB1355/1354 chip type rc=%d\n", rc);
goto cleanup;
}
platform_set_drvdata(pdev, chip);
rc = smb1355_parse_dt(chip);
if (rc < 0) {
pr_err("Couldn't parse device tree rc=%d\n", rc);
goto cleanup;
}
rc = smb1355_init_hw(chip);
if (rc < 0) {
pr_err("Couldn't initialize hardware rc=%d\n", rc);
goto cleanup;
}
rc = smb1355_init_parallel_psy(chip);
if (rc < 0) {
pr_err("Couldn't initialize parallel psy rc=%d\n", rc);
goto cleanup;
}
rc = smb1355_init_iio_psy(chip);
if (rc < 0) {
pr_err("Couldn't initialize parallel IIO device rc=%d\n", rc);
goto cleanup;
}
rc = smb1355_determine_initial_status(chip);
if (rc < 0) {
pr_err("Couldn't determine initial status rc=%d\n",
rc);
goto cleanup;
}
rc = smb1355_request_interrupts(chip);
if (rc < 0) {
pr_err("Couldn't request interrupts rc=%d\n", rc);
goto cleanup;
}
chip->irq_disable_votable = create_votable("SMB1355_IRQ_DISABLE",
VOTE_SET_ANY, smb1355_irq_disable_callback, chip);
if (IS_ERR(chip->irq_disable_votable)) {
rc = PTR_ERR(chip->irq_disable_votable);
goto cleanup;
}
/* keep IRQ's disabled until parallel is enabled */
vote(chip->irq_disable_votable, PARALLEL_ENABLE_VOTER, true, 0);
pr_info("%s probed successfully pl_mode=%s batfet_mode=%s\n",
chip->name,
IS_USBIN(chip->dt.pl_mode) ? "USBIN-USBIN" : "USBMID-USBMID",
(chip->dt.pl_batfet_mode == QTI_POWER_SUPPLY_PL_STACKED_BATFET)
? "STACKED_BATFET" : "NON-STACKED_BATFET");
return rc;
cleanup:
platform_set_drvdata(pdev, NULL);
return rc;
}
static int smb1355_remove(struct platform_device *pdev)
{
platform_set_drvdata(pdev, NULL);
return 0;
}
static void smb1355_shutdown(struct platform_device *pdev)
{
struct smb1355 *chip = platform_get_drvdata(pdev);
int rc;
/* disable parallel charging path */
rc = smb1355_set_parallel_charging(chip, true);
if (rc < 0)
pr_err("Couldn't disable parallel path rc=%d\n", rc);
smb1355_clk_request(chip, false);
}
#ifdef CONFIG_PM_SLEEP
static int smb1355_suspend(struct device *dev)
{
struct smb1355 *chip = dev_get_drvdata(dev);
cancel_delayed_work_sync(&chip->die_temp_work);
mutex_lock(&chip->suspend_lock);
chip->suspended = true;
mutex_unlock(&chip->suspend_lock);
return 0;
}
static int smb1355_resume(struct device *dev)
{
struct smb1355 *chip = dev_get_drvdata(dev);
mutex_lock(&chip->suspend_lock);
chip->suspended = false;
mutex_unlock(&chip->suspend_lock);
/*
* During suspend i2c failures are fixed by reporting cached
* chip state, to report correct values we need to invoke
* callbacks for the fcc and fv votables. To avoid excessive
* invokes to callbacks invoke only when smb1355 is enabled.
*/
if (is_voter_available(chip) && chip->charging_enabled) {
rerun_election(chip->fcc_votable);
rerun_election(chip->fv_votable);
}
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(smb1355_pm_ops, smb1355_suspend, smb1355_resume);
static struct platform_driver smb1355_driver = {
.driver = {
.name = "qcom,smb1355-charger",
.pm = &smb1355_pm_ops,
.of_match_table = match_table,
},
.probe = smb1355_probe,
.remove = smb1355_remove,
.shutdown = smb1355_shutdown,
};
module_platform_driver(smb1355_driver);
MODULE_DESCRIPTION("QPNP SMB1355 Charger Driver");
MODULE_LICENSE("GPL v2");
Reference in a new issue View git blame Copy permalink