Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm / 123e472de0e38002816faf121c90ab6b64863c6a / . / drivers / power / qpnp-charger.c
blob: 6ea4ea60266c222e986526da9273ad795dec9f35 [file] [log] [blame]
/* Copyright (c) 2012-2013, 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) "%s: " fmt, __func__
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/spmi.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/radix-tree.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/qpnp/qpnp-adc.h>
#include <linux/power_supply.h>
#include <linux/bitops.h>
#include <linux/ratelimit.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>
#include <linux/of_batterydata.h>
#include <linux/qpnp-revid.h>
#include <linux/android_alarm.h>
#include <linux/spinlock.h>
/* Interrupt offsets */
#define INT_RT_STS(base) (base + 0x10)
#define INT_SET_TYPE(base) (base + 0x11)
#define INT_POLARITY_HIGH(base) (base + 0x12)
#define INT_POLARITY_LOW(base) (base + 0x13)
#define INT_LATCHED_CLR(base) (base + 0x14)
#define INT_EN_SET(base) (base + 0x15)
#define INT_EN_CLR(base) (base + 0x16)
#define INT_LATCHED_STS(base) (base + 0x18)
#define INT_PENDING_STS(base) (base + 0x19)
#define INT_MID_SEL(base) (base + 0x1A)
#define INT_PRIORITY(base) (base + 0x1B)
/* Peripheral register offsets */
#define CHGR_CHG_OPTION 0x08
#define CHGR_ATC_STATUS 0x0A
#define CHGR_VBAT_STATUS 0x0B
#define CHGR_IBAT_BMS 0x0C
#define CHGR_IBAT_STS 0x0D
#define CHGR_VDD_MAX 0x40
#define CHGR_VDD_SAFE 0x41
#define CHGR_VDD_MAX_STEP 0x42
#define CHGR_IBAT_MAX 0x44
#define CHGR_IBAT_SAFE 0x45
#define CHGR_VIN_MIN 0x47
#define CHGR_VIN_MIN_STEP 0x48
#define CHGR_CHG_CTRL 0x49
#define CHGR_CHG_FAILED 0x4A
#define CHGR_ATC_CTRL 0x4B
#define CHGR_ATC_FAILED 0x4C
#define CHGR_VBAT_TRKL 0x50
#define CHGR_VBAT_WEAK 0x52
#define CHGR_IBAT_ATC_A 0x54
#define CHGR_IBAT_ATC_B 0x55
#define CHGR_IBAT_TERM_CHGR 0x5B
#define CHGR_IBAT_TERM_BMS 0x5C
#define CHGR_VBAT_DET 0x5D
#define CHGR_TTRKL_MAX_EN 0x5E
#define CHGR_TTRKL_MAX 0x5F
#define CHGR_TCHG_MAX_EN 0x60
#define CHGR_TCHG_MAX 0x61
#define CHGR_CHG_WDOG_TIME 0x62
#define CHGR_CHG_WDOG_DLY 0x63
#define CHGR_CHG_WDOG_PET 0x64
#define CHGR_CHG_WDOG_EN 0x65
#define CHGR_IR_DROP_COMPEN 0x67
#define CHGR_I_MAX_REG 0x44
#define CHGR_USB_USB_SUSP 0x47
#define CHGR_USB_USB_OTG_CTL 0x48
#define CHGR_USB_ENUM_T_STOP 0x4E
#define CHGR_USB_TRIM 0xF1
#define CHGR_CHG_TEMP_THRESH 0x66
#define CHGR_BAT_IF_PRES_STATUS 0x08
#define CHGR_STATUS 0x09
#define CHGR_BAT_IF_VCP 0x42
#define CHGR_BAT_IF_BATFET_CTRL1 0x90
#define CHGR_BAT_IF_BATFET_CTRL4 0x93
#define CHGR_BAT_IF_SPARE 0xDF
#define CHGR_MISC_BOOT_DONE 0x42
#define CHGR_BUCK_PSTG_CTRL 0x73
#define CHGR_BUCK_COMPARATOR_OVRIDE_1 0xEB
#define CHGR_BUCK_COMPARATOR_OVRIDE_3 0xED
#define CHGR_BUCK_BCK_VBAT_REG_MODE 0x74
#define MISC_REVISION2 0x01
#define USB_OVP_CTL 0x42
#define USB_CHG_GONE_REV_BST 0xED
#define BUCK_VCHG_OV 0x77
#define BUCK_TEST_SMBC_MODES 0xE6
#define BUCK_CTRL_TRIM1 0xF1
#define BUCK_CTRL_TRIM3 0xF3
#define SEC_ACCESS 0xD0
#define BAT_IF_VREF_BAT_THM_CTRL 0x4A
#define BAT_IF_BPD_CTRL 0x48
#define BOOST_VSET 0x41
#define BOOST_ENABLE_CONTROL 0x46
#define COMP_OVR1 0xEA
#define BAT_IF_BTC_CTRL 0x49
#define USB_OCP_THR 0x52
#define USB_OCP_CLR 0x53
#define BAT_IF_TEMP_STATUS 0x09
#define REG_OFFSET_PERP_SUBTYPE 0x05
/* SMBB peripheral subtype values */
#define SMBB_CHGR_SUBTYPE 0x01
#define SMBB_BUCK_SUBTYPE 0x02
#define SMBB_BAT_IF_SUBTYPE 0x03
#define SMBB_USB_CHGPTH_SUBTYPE 0x04
#define SMBB_DC_CHGPTH_SUBTYPE 0x05
#define SMBB_BOOST_SUBTYPE 0x06
#define SMBB_MISC_SUBTYPE 0x07
/* SMBB peripheral subtype values */
#define SMBBP_CHGR_SUBTYPE 0x31
#define SMBBP_BUCK_SUBTYPE 0x32
#define SMBBP_BAT_IF_SUBTYPE 0x33
#define SMBBP_USB_CHGPTH_SUBTYPE 0x34
#define SMBBP_BOOST_SUBTYPE 0x36
#define SMBBP_MISC_SUBTYPE 0x37
/* SMBCL peripheral subtype values */
#define SMBCL_CHGR_SUBTYPE 0x41
#define SMBCL_BUCK_SUBTYPE 0x42
#define SMBCL_BAT_IF_SUBTYPE 0x43
#define SMBCL_USB_CHGPTH_SUBTYPE 0x44
#define SMBCL_MISC_SUBTYPE 0x47
#define QPNP_CHARGER_DEV_NAME "qcom,qpnp-charger"
/* Status bits and masks */
#define CHGR_BOOT_DONE BIT(7)
#define CHGR_CHG_EN BIT(7)
#define CHGR_ON_BAT_FORCE_BIT BIT(0)
#define USB_VALID_DEB_20MS 0x03
#define BUCK_VBAT_REG_NODE_SEL_BIT BIT(0)
#define VREF_BATT_THERM_FORCE_ON 0xC0
#define BAT_IF_BPD_CTRL_SEL 0x03
#define VREF_BAT_THM_ENABLED_FSM 0x80
#define REV_BST_DETECTED BIT(0)
#define BAT_THM_EN BIT(1)
#define BAT_ID_EN BIT(0)
#define BOOST_PWR_EN BIT(7)
#define OCP_CLR_BIT BIT(7)
#define OCP_THR_MASK 0x03
#define OCP_THR_900_MA 0x02
#define OCP_THR_500_MA 0x01
#define OCP_THR_200_MA 0x00
/* Interrupt definitions */
/* smbb_chg_interrupts */
#define CHG_DONE_IRQ BIT(7)
#define CHG_FAILED_IRQ BIT(6)
#define FAST_CHG_ON_IRQ BIT(5)
#define TRKL_CHG_ON_IRQ BIT(4)
#define STATE_CHANGE_ON_IR BIT(3)
#define CHGWDDOG_IRQ BIT(2)
#define VBAT_DET_HI_IRQ BIT(1)
#define VBAT_DET_LOW_IRQ BIT(0)
/* smbb_buck_interrupts */
#define VDD_LOOP_IRQ BIT(6)
#define IBAT_LOOP_IRQ BIT(5)
#define ICHG_LOOP_IRQ BIT(4)
#define VCHG_LOOP_IRQ BIT(3)
#define OVERTEMP_IRQ BIT(2)
#define VREF_OV_IRQ BIT(1)
#define VBAT_OV_IRQ BIT(0)
/* smbb_bat_if_interrupts */
#define PSI_IRQ BIT(4)
#define VCP_ON_IRQ BIT(3)
#define BAT_FET_ON_IRQ BIT(2)
#define BAT_TEMP_OK_IRQ BIT(1)
#define BATT_PRES_IRQ BIT(0)
/* smbb_usb_interrupts */
#define CHG_GONE_IRQ BIT(2)
#define USBIN_VALID_IRQ BIT(1)
#define COARSE_DET_USB_IRQ BIT(0)
/* smbb_dc_interrupts */
#define DCIN_VALID_IRQ BIT(1)
#define COARSE_DET_DC_IRQ BIT(0)
/* smbb_boost_interrupts */
#define LIMIT_ERROR_IRQ BIT(1)
#define BOOST_PWR_OK_IRQ BIT(0)
/* smbb_misc_interrupts */
#define TFTWDOG_IRQ BIT(0)
/* SMBB types */
#define SMBB BIT(1)
#define SMBBP BIT(2)
#define SMBCL BIT(3)
/* Workaround flags */
#define CHG_FLAGS_VCP_WA BIT(0)
#define BOOST_FLASH_WA BIT(1)
#define POWER_STAGE_WA BIT(2)
struct qpnp_chg_irq {
int irq;
unsigned long disabled;
};
struct qpnp_chg_regulator {
struct regulator_desc rdesc;
struct regulator_dev *rdev;
};
/**
* struct qpnp_chg_chip - device information
* @dev: device pointer to access the parent
* @spmi: spmi pointer to access spmi information
* @chgr_base: charger peripheral base address
* @buck_base: buck peripheral base address
* @bat_if_base: battery interface peripheral base address
* @usb_chgpth_base: USB charge path peripheral base address
* @dc_chgpth_base: DC charge path peripheral base address
* @boost_base: boost peripheral base address
* @misc_base: misc peripheral base address
* @freq_base: freq peripheral base address
* @bat_is_cool: indicates that battery is cool
* @bat_is_warm: indicates that battery is warm
* @chg_done: indicates that charging is completed
* @usb_present: present status of usb
* @dc_present: present status of dc
* @batt_present: present status of battery
* @use_default_batt_values: flag to report default battery properties
* @btc_disabled Flag to disable btc (disables hot and cold irqs)
* @max_voltage_mv: the max volts the batt should be charged up to
* @min_voltage_mv: min battery voltage before turning the FET on
* @batt_weak_voltage_mv: Weak battery voltage threshold
* @max_bat_chg_current: maximum battery charge current in mA
* @warm_bat_chg_ma: warm battery maximum charge current in mA
* @cool_bat_chg_ma: cool battery maximum charge current in mA
* @warm_bat_mv: warm temperature battery target voltage
* @cool_bat_mv: cool temperature battery target voltage
* @resume_delta_mv: voltage delta at which battery resumes charging
* @term_current: the charging based term current
* @safe_current: battery safety current setting
* @maxinput_usb_ma: Maximum Input current USB
* @maxinput_dc_ma: Maximum Input current DC
* @hot_batt_p Hot battery threshold setting
* @cold_batt_p Cold battery threshold setting
* @warm_bat_decidegc Warm battery temperature in degree Celsius
* @cool_bat_decidegc Cool battery temperature in degree Celsius
* @revision: PMIC revision
* @type: SMBB type
* @tchg_mins maximum allowed software initiated charge time
* @thermal_levels amount of thermal mitigation levels
* @thermal_mitigation thermal mitigation level values
* @therm_lvl_sel thermal mitigation level selection
* @dc_psy power supply to export information to userspace
* @usb_psy power supply to export information to userspace
* @bms_psy power supply to export information to userspace
* @batt_psy: power supply to export information to userspace
* @flags: flags to activate specific workarounds
* throughout the driver
*
*/
struct qpnp_chg_chip {
struct device *dev;
struct spmi_device *spmi;
u16 chgr_base;
u16 buck_base;
u16 bat_if_base;
u16 usb_chgpth_base;
u16 dc_chgpth_base;
u16 boost_base;
u16 misc_base;
u16 freq_base;
struct qpnp_chg_irq usbin_valid;
struct qpnp_chg_irq usb_ocp;
struct qpnp_chg_irq dcin_valid;
struct qpnp_chg_irq chg_gone;
struct qpnp_chg_irq chg_fastchg;
struct qpnp_chg_irq chg_trklchg;
struct qpnp_chg_irq chg_failed;
struct qpnp_chg_irq chg_vbatdet_lo;
struct qpnp_chg_irq batt_pres;
struct qpnp_chg_irq batt_temp_ok;
struct qpnp_chg_irq coarse_det_usb;
bool bat_is_cool;
bool bat_is_warm;
bool chg_done;
bool charger_monitor_checked;
bool usb_present;
u8 usbin_health;
bool usb_coarse_det;
bool dc_present;
bool batt_present;
bool charging_disabled;
bool ovp_monitor_enable;
bool usb_valid_check_ovp;
bool btc_disabled;
bool use_default_batt_values;
bool duty_cycle_100p;
bool ibat_calibration_enabled;
bool aicl_settled;
bool use_external_rsense;
unsigned int bpd_detection;
unsigned int max_bat_chg_current;
unsigned int warm_bat_chg_ma;
unsigned int cool_bat_chg_ma;
unsigned int safe_voltage_mv;
unsigned int max_voltage_mv;
unsigned int min_voltage_mv;
unsigned int batt_weak_voltage_mv;
int prev_usb_max_ma;
int set_vddmax_mv;
int delta_vddmax_mv;
u8 trim_center;
unsigned int warm_bat_mv;
unsigned int cool_bat_mv;
unsigned int resume_delta_mv;
int insertion_ocv_uv;
int term_current;
int soc_resume_limit;
bool resuming_charging;
unsigned int maxinput_usb_ma;
unsigned int maxinput_dc_ma;
unsigned int hot_batt_p;
unsigned int cold_batt_p;
int warm_bat_decidegc;
int cool_bat_decidegc;
int fake_battery_soc;
unsigned int safe_current;
unsigned int revision;
unsigned int type;
unsigned int tchg_mins;
unsigned int thermal_levels;
unsigned int therm_lvl_sel;
unsigned int *thermal_mitigation;
struct power_supply dc_psy;
struct power_supply *usb_psy;
struct power_supply *bms_psy;
struct power_supply batt_psy;
uint32_t flags;
struct qpnp_adc_tm_btm_param adc_param;
struct work_struct adc_measure_work;
struct work_struct adc_disable_work;
struct delayed_work arb_stop_work;
struct delayed_work eoc_work;
struct delayed_work usbin_health_check;
struct work_struct soc_check_work;
struct delayed_work aicl_check_work;
struct work_struct insertion_ocv_work;
struct qpnp_chg_regulator otg_vreg;
struct qpnp_chg_regulator boost_vreg;
struct qpnp_chg_regulator batfet_vreg;
bool batfet_ext_en;
struct work_struct batfet_lcl_work;
struct qpnp_vadc_chip *vadc_dev;
struct qpnp_iadc_chip *iadc_dev;
struct qpnp_adc_tm_chip *adc_tm_dev;
struct mutex jeita_configure_lock;
spinlock_t usbin_health_monitor_lock;
struct mutex batfet_vreg_lock;
struct alarm reduce_power_stage_alarm;
struct work_struct reduce_power_stage_work;
bool power_stage_workaround_running;
bool power_stage_workaround_enable;
};
static struct of_device_id qpnp_charger_match_table[] = {
{ .compatible = QPNP_CHARGER_DEV_NAME, },
{}
};
enum bpd_type {
BPD_TYPE_BAT_ID,
BPD_TYPE_BAT_THM,
BPD_TYPE_BAT_THM_BAT_ID,
};
static const char * const bpd_label[] = {
[BPD_TYPE_BAT_ID] = "bpd_id",
[BPD_TYPE_BAT_THM] = "bpd_thm",
[BPD_TYPE_BAT_THM_BAT_ID] = "bpd_thm_id",
};
enum btc_type {
HOT_THD_25_PCT = 25,
HOT_THD_35_PCT = 35,
COLD_THD_70_PCT = 70,
COLD_THD_80_PCT = 80,
};
static u8 btc_value[] = {
[HOT_THD_25_PCT] = 0x0,
[HOT_THD_35_PCT] = BIT(0),
[COLD_THD_70_PCT] = 0x0,
[COLD_THD_80_PCT] = BIT(1),
};
enum usbin_health {
USBIN_UNKNOW,
USBIN_OK,
USBIN_OVP,
};
static inline int
get_bpd(const char *name)
{
int i = 0;
for (i = 0; i < ARRAY_SIZE(bpd_label); i++) {
if (strcmp(bpd_label[i], name) == 0)
return i;
}
return -EINVAL;
}
static bool
is_within_range(int value, int left, int right)
{
if (left >= right && left >= value && value >= right)
return 1;
if (left <= right && left <= value && value <= right)
return 1;
return 0;
}
static int
qpnp_chg_read(struct qpnp_chg_chip *chip, u8 *val,
u16 base, int count)
{
int rc = 0;
struct spmi_device *spmi = chip->spmi;
if (base == 0) {
pr_err("base cannot be zero base=0x%02x sid=0x%02x rc=%d\n",
base, spmi->sid, rc);
return -EINVAL;
}
rc = spmi_ext_register_readl(spmi->ctrl, spmi->sid, base, val, count);
if (rc) {
pr_err("SPMI read failed base=0x%02x sid=0x%02x rc=%d\n", base,
spmi->sid, rc);
return rc;
}
return 0;
}
static int
qpnp_chg_write(struct qpnp_chg_chip *chip, u8 *val,
u16 base, int count)
{
int rc = 0;
struct spmi_device *spmi = chip->spmi;
if (base == 0) {
pr_err("base cannot be zero base=0x%02x sid=0x%02x rc=%d\n",
base, spmi->sid, rc);
return -EINVAL;
}
rc = spmi_ext_register_writel(spmi->ctrl, spmi->sid, base, val, count);
if (rc) {
pr_err("write failed base=0x%02x sid=0x%02x rc=%d\n",
base, spmi->sid, rc);
return rc;
}
return 0;
}
static int
qpnp_chg_masked_write(struct qpnp_chg_chip *chip, u16 base,
u8 mask, u8 val, int count)
{
int rc;
u8 reg;
rc = qpnp_chg_read(chip, &reg, base, count);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n", base, rc);
return rc;
}
pr_debug("addr = 0x%x read 0x%x\n", base, reg);
reg &= ~mask;
reg |= val & mask;
pr_debug("Writing 0x%x\n", reg);
rc = qpnp_chg_write(chip, &reg, base, count);
if (rc) {
pr_err("spmi write failed: addr=%03X, rc=%d\n", base, rc);
return rc;
}
return 0;
}
static void
qpnp_chg_enable_irq(struct qpnp_chg_irq *irq)
{
if (__test_and_clear_bit(0, &irq->disabled)) {
pr_debug("number = %d\n", irq->irq);
enable_irq(irq->irq);
}
}
static void
qpnp_chg_disable_irq(struct qpnp_chg_irq *irq)
{
if (!__test_and_set_bit(0, &irq->disabled)) {
pr_debug("number = %d\n", irq->irq);
disable_irq_nosync(irq->irq);
}
}
#define USB_OTG_EN_BIT BIT(0)
static int
qpnp_chg_is_otg_en_set(struct qpnp_chg_chip *chip)
{
u8 usb_otg_en;
int rc;
rc = qpnp_chg_read(chip, &usb_otg_en,
chip->usb_chgpth_base + CHGR_USB_USB_OTG_CTL,
1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
chip->usb_chgpth_base + CHGR_STATUS, rc);
return rc;
}
pr_debug("usb otg en 0x%x\n", usb_otg_en);
return (usb_otg_en & USB_OTG_EN_BIT) ? 1 : 0;
}
static int
qpnp_chg_is_boost_en_set(struct qpnp_chg_chip *chip)
{
u8 boost_en_ctl;
int rc;
rc = qpnp_chg_read(chip, &boost_en_ctl,
chip->boost_base + BOOST_ENABLE_CONTROL, 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
chip->boost_base + BOOST_ENABLE_CONTROL, rc);
return rc;
}
pr_debug("boost en 0x%x\n", boost_en_ctl);
return (boost_en_ctl & BOOST_PWR_EN) ? 1 : 0;
}
static int
qpnp_chg_is_batt_temp_ok(struct qpnp_chg_chip *chip)
{
u8 batt_rt_sts;
int rc;
rc = qpnp_chg_read(chip, &batt_rt_sts,
INT_RT_STS(chip->bat_if_base), 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
INT_RT_STS(chip->bat_if_base), rc);
return rc;
}
return (batt_rt_sts & BAT_TEMP_OK_IRQ) ? 1 : 0;
}
static int
qpnp_chg_is_batt_present(struct qpnp_chg_chip *chip)
{
u8 batt_pres_rt_sts;
int rc;
rc = qpnp_chg_read(chip, &batt_pres_rt_sts,
INT_RT_STS(chip->bat_if_base), 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
INT_RT_STS(chip->bat_if_base), rc);
return rc;
}
return (batt_pres_rt_sts & BATT_PRES_IRQ) ? 1 : 0;
}
static int
qpnp_chg_is_batfet_closed(struct qpnp_chg_chip *chip)
{
u8 batfet_closed_rt_sts;
int rc;
rc = qpnp_chg_read(chip, &batfet_closed_rt_sts,
INT_RT_STS(chip->bat_if_base), 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
INT_RT_STS(chip->bat_if_base), rc);
return rc;
}
return (batfet_closed_rt_sts & BAT_FET_ON_IRQ) ? 1 : 0;
}
#define USB_VALID_BIT BIT(7)
static int
qpnp_chg_is_usb_chg_plugged_in(struct qpnp_chg_chip *chip)
{
u8 usbin_valid_rt_sts;
int rc;
rc = qpnp_chg_read(chip, &usbin_valid_rt_sts,
chip->usb_chgpth_base + CHGR_STATUS , 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
chip->usb_chgpth_base + CHGR_STATUS, rc);
return rc;
}
pr_debug("chgr usb sts 0x%x\n", usbin_valid_rt_sts);
return (usbin_valid_rt_sts & USB_VALID_BIT) ? 1 : 0;
}
static bool
qpnp_chg_is_ibat_loop_active(struct qpnp_chg_chip *chip)
{
int rc;
u8 buck_sts;
rc = qpnp_chg_read(chip, &buck_sts,
INT_RT_STS(chip->buck_base), 1);
if (rc) {
pr_err("failed to read buck RT status rc=%d\n", rc);
return 0;
}
return !!(buck_sts & IBAT_LOOP_IRQ);
}
#define USB_VALID_MASK 0xC0
#define USB_COARSE_DET 0x10
#define USB_VALID_UVP_VALUE 0x00
#define USB_VALID_OVP_VALUE 0x40
static int
qpnp_chg_check_usb_coarse_det(struct qpnp_chg_chip *chip)
{
u8 usbin_chg_rt_sts;
int rc;
rc = qpnp_chg_read(chip, &usbin_chg_rt_sts,
chip->usb_chgpth_base + CHGR_STATUS , 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
chip->usb_chgpth_base + CHGR_STATUS, rc);
return rc;
}
return (usbin_chg_rt_sts & USB_COARSE_DET) ? 1 : 0;
}
static int
qpnp_chg_check_usbin_health(struct qpnp_chg_chip *chip)
{
u8 usbin_chg_rt_sts, usbin_health = 0;
int rc;
rc = qpnp_chg_read(chip, &usbin_chg_rt_sts,
chip->usb_chgpth_base + CHGR_STATUS , 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
chip->usb_chgpth_base + CHGR_STATUS, rc);
return rc;
}
pr_debug("chgr usb sts 0x%x\n", usbin_chg_rt_sts);
if ((usbin_chg_rt_sts & USB_COARSE_DET) == USB_COARSE_DET) {
if ((usbin_chg_rt_sts & USB_VALID_MASK)
== USB_VALID_OVP_VALUE) {
usbin_health = USBIN_OVP;
pr_err("Over voltage charger inserted\n");
} else if ((usbin_chg_rt_sts & USB_VALID_BIT) != 0) {
usbin_health = USBIN_OK;
pr_debug("Valid charger inserted\n");
}
} else {
usbin_health = USBIN_UNKNOW;
pr_debug("Charger plug out\n");
}
return usbin_health;
}
static int
qpnp_chg_is_dc_chg_plugged_in(struct qpnp_chg_chip *chip)
{
u8 dcin_valid_rt_sts;
int rc;
if (!chip->dc_chgpth_base)
return 0;
rc = qpnp_chg_read(chip, &dcin_valid_rt_sts,
INT_RT_STS(chip->dc_chgpth_base), 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
INT_RT_STS(chip->dc_chgpth_base), rc);
return rc;
}
return (dcin_valid_rt_sts & DCIN_VALID_IRQ) ? 1 : 0;
}
static int
qpnp_chg_is_ichg_loop_active(struct qpnp_chg_chip *chip)
{
u8 buck_sts;
int rc;
rc = qpnp_chg_read(chip, &buck_sts, INT_RT_STS(chip->buck_base), 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
INT_RT_STS(chip->buck_base), rc);
return rc;
}
pr_debug("buck usb sts 0x%x\n", buck_sts);
return (buck_sts & ICHG_LOOP_IRQ) ? 1 : 0;
}
#define QPNP_CHG_I_MAX_MIN_100 100
#define QPNP_CHG_I_MAX_MIN_150 150
#define QPNP_CHG_I_MAX_MIN_MA 200
#define QPNP_CHG_I_MAX_MAX_MA 2500
#define QPNP_CHG_I_MAXSTEP_MA 100
static int
qpnp_chg_idcmax_set(struct qpnp_chg_chip *chip, int mA)
{
int rc = 0;
u8 dc = 0;
if (mA < QPNP_CHG_I_MAX_MIN_100
|| mA > QPNP_CHG_I_MAX_MAX_MA) {
pr_err("bad mA=%d asked to set\n", mA);
return -EINVAL;
}
if (mA == QPNP_CHG_I_MAX_MIN_100) {
dc = 0x00;
pr_debug("current=%d setting %02x\n", mA, dc);
return qpnp_chg_write(chip, &dc,
chip->dc_chgpth_base + CHGR_I_MAX_REG, 1);
} else if (mA == QPNP_CHG_I_MAX_MIN_150) {
dc = 0x01;
pr_debug("current=%d setting %02x\n", mA, dc);
return qpnp_chg_write(chip, &dc,
chip->dc_chgpth_base + CHGR_I_MAX_REG, 1);
}
dc = mA / QPNP_CHG_I_MAXSTEP_MA;
pr_debug("current=%d setting 0x%x\n", mA, dc);
rc = qpnp_chg_write(chip, &dc,
chip->dc_chgpth_base + CHGR_I_MAX_REG, 1);
return rc;
}
static int
qpnp_chg_iusb_trim_get(struct qpnp_chg_chip *chip)
{
int rc = 0;
u8 trim_reg;
rc = qpnp_chg_read(chip, &trim_reg,
chip->usb_chgpth_base + CHGR_USB_TRIM, 1);
if (rc) {
pr_err("failed to read USB_TRIM rc=%d\n", rc);
return 0;
}
return trim_reg;
}
static int
qpnp_chg_iusb_trim_set(struct qpnp_chg_chip *chip, int trim)
{
int rc = 0;
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + SEC_ACCESS,
0xFF,
0xA5, 1);
if (rc) {
pr_err("failed to write SEC_ACCESS rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + CHGR_USB_TRIM,
0xFF,
trim, 1);
if (rc) {
pr_err("failed to write USB TRIM rc=%d\n", rc);
return rc;
}
return rc;
}
static int
qpnp_chg_iusbmax_set(struct qpnp_chg_chip *chip, int mA)
{
int rc = 0;
u8 usb_reg = 0, temp = 8;
if (mA < QPNP_CHG_I_MAX_MIN_100
|| mA > QPNP_CHG_I_MAX_MAX_MA) {
pr_err("bad mA=%d asked to set\n", mA);
return -EINVAL;
}
if (mA == QPNP_CHG_I_MAX_MIN_100) {
usb_reg = 0x00;
pr_debug("current=%d setting %02x\n", mA, usb_reg);
return qpnp_chg_write(chip, &usb_reg,
chip->usb_chgpth_base + CHGR_I_MAX_REG, 1);
} else if (mA == QPNP_CHG_I_MAX_MIN_150) {
usb_reg = 0x01;
pr_debug("current=%d setting %02x\n", mA, usb_reg);
return qpnp_chg_write(chip, &usb_reg,
chip->usb_chgpth_base + CHGR_I_MAX_REG, 1);
}
/* Impose input current limit */
if (chip->maxinput_usb_ma)
mA = (chip->maxinput_usb_ma) <= mA ? chip->maxinput_usb_ma : mA;
usb_reg = mA / QPNP_CHG_I_MAXSTEP_MA;
if (chip->flags & CHG_FLAGS_VCP_WA) {
temp = 0xA5;
rc = qpnp_chg_write(chip, &temp,
chip->buck_base + SEC_ACCESS, 1);
rc = qpnp_chg_masked_write(chip,
chip->buck_base + CHGR_BUCK_COMPARATOR_OVRIDE_3,
0x0C, 0x0C, 1);
}
pr_debug("current=%d setting 0x%x\n", mA, usb_reg);
rc = qpnp_chg_write(chip, &usb_reg,
chip->usb_chgpth_base + CHGR_I_MAX_REG, 1);
if (chip->flags & CHG_FLAGS_VCP_WA) {
temp = 0xA5;
udelay(200);
rc = qpnp_chg_write(chip, &temp,
chip->buck_base + SEC_ACCESS, 1);
rc = qpnp_chg_masked_write(chip,
chip->buck_base + CHGR_BUCK_COMPARATOR_OVRIDE_3,
0x0C, 0x00, 1);
}
return rc;
}
#define QPNP_CHG_VINMIN_MIN_MV 4200
#define QPNP_CHG_VINMIN_HIGH_MIN_MV 5600
#define QPNP_CHG_VINMIN_HIGH_MIN_VAL 0x2B
#define QPNP_CHG_VINMIN_MAX_MV 9600
#define QPNP_CHG_VINMIN_STEP_MV 50
#define QPNP_CHG_VINMIN_STEP_HIGH_MV 200
#define QPNP_CHG_VINMIN_MASK 0x3F
#define QPNP_CHG_VINMIN_MIN_VAL 0x10
static int
qpnp_chg_vinmin_set(struct qpnp_chg_chip *chip, int voltage)
{
u8 temp;
if (voltage < QPNP_CHG_VINMIN_MIN_MV
|| voltage > QPNP_CHG_VINMIN_MAX_MV) {
pr_err("bad mV=%d asked to set\n", voltage);
return -EINVAL;
}
if (voltage >= QPNP_CHG_VINMIN_HIGH_MIN_MV) {
temp = QPNP_CHG_VINMIN_HIGH_MIN_VAL;
temp += (voltage - QPNP_CHG_VINMIN_HIGH_MIN_MV)
/ QPNP_CHG_VINMIN_STEP_HIGH_MV;
} else {
temp = QPNP_CHG_VINMIN_MIN_VAL;
temp += (voltage - QPNP_CHG_VINMIN_MIN_MV)
/ QPNP_CHG_VINMIN_STEP_MV;
}
pr_debug("voltage=%d setting %02x\n", voltage, temp);
return qpnp_chg_masked_write(chip,
chip->chgr_base + CHGR_VIN_MIN,
QPNP_CHG_VINMIN_MASK, temp, 1);
}
static int
qpnp_chg_vinmin_get(struct qpnp_chg_chip *chip)
{
int rc, vin_min_mv;
u8 vin_min;
rc = qpnp_chg_read(chip, &vin_min, chip->chgr_base + CHGR_VIN_MIN, 1);
if (rc) {
pr_err("failed to read VIN_MIN rc=%d\n", rc);
return 0;
}
if (vin_min == 0)
vin_min_mv = QPNP_CHG_I_MAX_MIN_100;
else if (vin_min >= QPNP_CHG_VINMIN_HIGH_MIN_VAL)
vin_min_mv = QPNP_CHG_VINMIN_HIGH_MIN_MV +
(vin_min - QPNP_CHG_VINMIN_HIGH_MIN_VAL)
* QPNP_CHG_VINMIN_STEP_HIGH_MV;
else
vin_min_mv = QPNP_CHG_VINMIN_MIN_MV +
(vin_min - QPNP_CHG_VINMIN_MIN_VAL)
* QPNP_CHG_VINMIN_STEP_MV;
pr_debug("vin_min= 0x%02x, ma = %d\n", vin_min, vin_min_mv);
return vin_min_mv;
}
#define QPNP_CHG_VBATWEAK_MIN_MV 2100
#define QPNP_CHG_VBATWEAK_MAX_MV 3600
#define QPNP_CHG_VBATWEAK_STEP_MV 100
static int
qpnp_chg_vbatweak_set(struct qpnp_chg_chip *chip, int vbatweak_mv)
{
u8 temp;
if (vbatweak_mv < QPNP_CHG_VBATWEAK_MIN_MV
|| vbatweak_mv > QPNP_CHG_VBATWEAK_MAX_MV)
return -EINVAL;
temp = (vbatweak_mv - QPNP_CHG_VBATWEAK_MIN_MV)
/ QPNP_CHG_VBATWEAK_STEP_MV;
pr_debug("voltage=%d setting %02x\n", vbatweak_mv, temp);
return qpnp_chg_write(chip, &temp,
chip->chgr_base + CHGR_VBAT_WEAK, 1);
}
static int
qpnp_chg_usb_iusbmax_get(struct qpnp_chg_chip *chip)
{
int rc, iusbmax_ma;
u8 iusbmax;
rc = qpnp_chg_read(chip, &iusbmax,
chip->usb_chgpth_base + CHGR_I_MAX_REG, 1);
if (rc) {
pr_err("failed to read IUSB_MAX rc=%d\n", rc);
return 0;
}
if (iusbmax == 0)
iusbmax_ma = QPNP_CHG_I_MAX_MIN_100;
else if (iusbmax == 0x01)
iusbmax_ma = QPNP_CHG_I_MAX_MIN_150;
else
iusbmax_ma = iusbmax * QPNP_CHG_I_MAXSTEP_MA;
pr_debug("iusbmax = 0x%02x, ma = %d\n", iusbmax, iusbmax_ma);
return iusbmax_ma;
}
#define USB_SUSPEND_BIT BIT(0)
static int
qpnp_chg_usb_suspend_enable(struct qpnp_chg_chip *chip, int enable)
{
return qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + CHGR_USB_USB_SUSP,
USB_SUSPEND_BIT,
enable ? USB_SUSPEND_BIT : 0, 1);
}
static int
qpnp_chg_charge_en(struct qpnp_chg_chip *chip, int enable)
{
if (chip->insertion_ocv_uv == 0 && enable) {
pr_debug("Battery not present, skipping\n");
return 0;
}
pr_debug("charging %s\n", enable ? "enabled" : "disabled");
return qpnp_chg_masked_write(chip, chip->chgr_base + CHGR_CHG_CTRL,
CHGR_CHG_EN,
enable ? CHGR_CHG_EN : 0, 1);
}
static int
qpnp_chg_force_run_on_batt(struct qpnp_chg_chip *chip, int disable)
{
/* Don't run on battery for batteryless hardware */
if (chip->use_default_batt_values)
return 0;
/* Don't force on battery if battery is not present */
if (!qpnp_chg_is_batt_present(chip))
return 0;
/* This bit forces the charger to run off of the battery rather
* than a connected charger */
return qpnp_chg_masked_write(chip, chip->chgr_base + CHGR_CHG_CTRL,
CHGR_ON_BAT_FORCE_BIT,
disable ? CHGR_ON_BAT_FORCE_BIT : 0, 1);
}
#define BUCK_DUTY_MASK_100P 0x30
static int
qpnp_buck_set_100_duty_cycle_enable(struct qpnp_chg_chip *chip, int enable)
{
int rc;
pr_debug("enable: %d\n", enable);
rc = qpnp_chg_masked_write(chip,
chip->buck_base + SEC_ACCESS, 0xA5, 0xA5, 1);
if (rc) {
pr_debug("failed to write sec access rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip,
chip->buck_base + BUCK_TEST_SMBC_MODES,
BUCK_DUTY_MASK_100P, enable ? 0x00 : 0x10, 1);
if (rc) {
pr_debug("failed enable 100p duty cycle rc=%d\n", rc);
return rc;
}
return rc;
}
#define COMPATATOR_OVERRIDE_0 0x80
static int
qpnp_chg_toggle_chg_done_logic(struct qpnp_chg_chip *chip, int enable)
{
int rc;
pr_debug("toggle: %d\n", enable);
rc = qpnp_chg_masked_write(chip,
chip->buck_base + SEC_ACCESS, 0xA5, 0xA5, 1);
if (rc) {
pr_debug("failed to write sec access rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip,
chip->buck_base + CHGR_BUCK_COMPARATOR_OVRIDE_1,
0xC0, enable ? 0x00 : COMPATATOR_OVERRIDE_0, 1);
if (rc) {
pr_debug("failed to toggle chg done override rc=%d\n", rc);
return rc;
}
return rc;
}
#define QPNP_CHG_VBATDET_MIN_MV 3240
#define QPNP_CHG_VBATDET_MAX_MV 5780
#define QPNP_CHG_VBATDET_STEP_MV 20
static int
qpnp_chg_vbatdet_set(struct qpnp_chg_chip *chip, int vbatdet_mv)
{
u8 temp;
if (vbatdet_mv < QPNP_CHG_VBATDET_MIN_MV
|| vbatdet_mv > QPNP_CHG_VBATDET_MAX_MV) {
pr_err("bad mV=%d asked to set\n", vbatdet_mv);
return -EINVAL;
}
temp = (vbatdet_mv - QPNP_CHG_VBATDET_MIN_MV)
/ QPNP_CHG_VBATDET_STEP_MV;
pr_debug("voltage=%d setting %02x\n", vbatdet_mv, temp);
return qpnp_chg_write(chip, &temp,
chip->chgr_base + CHGR_VBAT_DET, 1);
}
static void
qpnp_chg_set_appropriate_vbatdet(struct qpnp_chg_chip *chip)
{
if (chip->bat_is_cool)
qpnp_chg_vbatdet_set(chip, chip->cool_bat_mv
- chip->resume_delta_mv);
else if (chip->bat_is_warm)
qpnp_chg_vbatdet_set(chip, chip->warm_bat_mv
- chip->resume_delta_mv);
else if (chip->resuming_charging)
qpnp_chg_vbatdet_set(chip, chip->max_voltage_mv
+ chip->resume_delta_mv);
else
qpnp_chg_vbatdet_set(chip, chip->max_voltage_mv
- chip->resume_delta_mv);
}
static void
qpnp_arb_stop_work(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct qpnp_chg_chip *chip = container_of(dwork,
struct qpnp_chg_chip, arb_stop_work);
if (!chip->chg_done)
qpnp_chg_charge_en(chip, !chip->charging_disabled);
qpnp_chg_force_run_on_batt(chip, chip->charging_disabled);
}
static void
qpnp_bat_if_adc_measure_work(struct work_struct *work)
{
struct qpnp_chg_chip *chip = container_of(work,
struct qpnp_chg_chip, adc_measure_work);
if (qpnp_adc_tm_channel_measure(chip->adc_tm_dev, &chip->adc_param))
pr_err("request ADC error\n");
}
static void
qpnp_bat_if_adc_disable_work(struct work_struct *work)
{
struct qpnp_chg_chip *chip = container_of(work,
struct qpnp_chg_chip, adc_disable_work);
qpnp_adc_tm_disable_chan_meas(chip->adc_tm_dev, &chip->adc_param);
}
#define EOC_CHECK_PERIOD_MS 10000
static irqreturn_t
qpnp_chg_vbatdet_lo_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
u8 chg_sts = 0;
int rc;
pr_debug("vbatdet-lo triggered\n");
rc = qpnp_chg_read(chip, &chg_sts, INT_RT_STS(chip->chgr_base), 1);
if (rc)
pr_err("failed to read chg_sts rc=%d\n", rc);
pr_debug("chg_done chg_sts: 0x%x triggered\n", chg_sts);
if (!chip->charging_disabled && (chg_sts & FAST_CHG_ON_IRQ)) {
schedule_delayed_work(&chip->eoc_work,
msecs_to_jiffies(EOC_CHECK_PERIOD_MS));
pm_stay_awake(chip->dev);
}
qpnp_chg_disable_irq(&chip->chg_vbatdet_lo);
pr_debug("psy changed usb_psy\n");
power_supply_changed(chip->usb_psy);
if (chip->dc_chgpth_base) {
pr_debug("psy changed dc_psy\n");
power_supply_changed(&chip->dc_psy);
}
if (chip->bat_if_base) {
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
}
return IRQ_HANDLED;
}
#define ARB_STOP_WORK_MS 1000
static irqreturn_t
qpnp_chg_usb_chg_gone_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
u8 usb_sts;
int rc;
rc = qpnp_chg_read(chip, &usb_sts,
INT_RT_STS(chip->usb_chgpth_base), 1);
if (rc)
pr_err("failed to read usb_chgpth_sts rc=%d\n", rc);
pr_debug("chg_gone triggered\n");
if (qpnp_chg_is_usb_chg_plugged_in(chip) && (usb_sts & CHG_GONE_IRQ)) {
qpnp_chg_charge_en(chip, 0);
qpnp_chg_force_run_on_batt(chip, 1);
schedule_delayed_work(&chip->arb_stop_work,
msecs_to_jiffies(ARB_STOP_WORK_MS));
}
return IRQ_HANDLED;
}
static irqreturn_t
qpnp_chg_usb_usb_ocp_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
int rc;
pr_debug("usb-ocp triggered\n");
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + USB_OCP_CLR,
OCP_CLR_BIT,
OCP_CLR_BIT, 1);
if (rc)
pr_err("Failed to clear OCP bit rc = %d\n", rc);
/* force usb ovp fet off */
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + CHGR_USB_USB_OTG_CTL,
USB_OTG_EN_BIT,
USB_OTG_EN_BIT, 1);
if (rc)
pr_err("Failed to turn off usb ovp rc = %d\n", rc);
return IRQ_HANDLED;
}
#define QPNP_CHG_VDDMAX_MIN 3400
#define QPNP_CHG_V_MIN_MV 3240
#define QPNP_CHG_V_MAX_MV 4500
#define QPNP_CHG_V_STEP_MV 10
#define QPNP_CHG_BUCK_TRIM1_STEP 10
#define QPNP_CHG_BUCK_VDD_TRIM_MASK 0xF0
static int
qpnp_chg_vddmax_and_trim_set(struct qpnp_chg_chip *chip,
int voltage, int trim_mv)
{
int rc, trim_set;
u8 vddmax = 0, trim = 0;
if (voltage < QPNP_CHG_VDDMAX_MIN
|| voltage > QPNP_CHG_V_MAX_MV) {
pr_err("bad mV=%d asked to set\n", voltage);
return -EINVAL;
}
vddmax = (voltage - QPNP_CHG_V_MIN_MV) / QPNP_CHG_V_STEP_MV;
rc = qpnp_chg_write(chip, &vddmax, chip->chgr_base + CHGR_VDD_MAX, 1);
if (rc) {
pr_err("Failed to write vddmax: %d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip,
chip->buck_base + SEC_ACCESS,
0xFF,
0xA5, 1);
if (rc) {
pr_err("failed to write SEC_ACCESS rc=%d\n", rc);
return rc;
}
trim_set = clamp((int)chip->trim_center
+ (trim_mv / QPNP_CHG_BUCK_TRIM1_STEP),
0, 0xF);
trim = (u8)trim_set << 4;
rc = qpnp_chg_masked_write(chip,
chip->buck_base + BUCK_CTRL_TRIM1,
QPNP_CHG_BUCK_VDD_TRIM_MASK,
trim, 1);
if (rc) {
pr_err("Failed to write buck trim1: %d\n", rc);
return rc;
}
pr_debug("voltage=%d+%d setting vddmax: %02x, trim: %02x\n",
voltage, trim_mv, vddmax, trim);
return 0;
}
static int
qpnp_chg_vddmax_get(struct qpnp_chg_chip *chip)
{
int rc;
u8 vddmax = 0;
rc = qpnp_chg_read(chip, &vddmax, chip->chgr_base + CHGR_VDD_MAX, 1);
if (rc) {
pr_err("Failed to write vddmax: %d\n", rc);
return rc;
}
return QPNP_CHG_V_MIN_MV + (int)vddmax * QPNP_CHG_V_STEP_MV;
}
/* JEITA compliance logic */
static void
qpnp_chg_set_appropriate_vddmax(struct qpnp_chg_chip *chip)
{
if (chip->bat_is_cool)
qpnp_chg_vddmax_and_trim_set(chip, chip->cool_bat_mv,
chip->delta_vddmax_mv);
else if (chip->bat_is_warm)
qpnp_chg_vddmax_and_trim_set(chip, chip->warm_bat_mv,
chip->delta_vddmax_mv);
else
qpnp_chg_vddmax_and_trim_set(chip, chip->max_voltage_mv,
chip->delta_vddmax_mv);
}
static void
qpnp_usbin_health_check_work(struct work_struct *work)
{
int usbin_health = 0;
u8 psy_health_sts = 0;
struct delayed_work *dwork = to_delayed_work(work);
struct qpnp_chg_chip *chip = container_of(dwork,
struct qpnp_chg_chip, usbin_health_check);
usbin_health = qpnp_chg_check_usbin_health(chip);
spin_lock(&chip->usbin_health_monitor_lock);
if (chip->usbin_health != usbin_health) {
pr_debug("health_check_work: pr_usbin_health = %d, usbin_health = %d",
chip->usbin_health, usbin_health);
chip->usbin_health = usbin_health;
if (usbin_health == USBIN_OVP)
psy_health_sts = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
else if (usbin_health == USBIN_OK)
psy_health_sts = POWER_SUPPLY_HEALTH_GOOD;
power_supply_set_health_state(chip->usb_psy, psy_health_sts);
power_supply_changed(chip->usb_psy);
}
/* enable OVP monitor in usb valid after coarse-det complete */
chip->usb_valid_check_ovp = true;
spin_unlock(&chip->usbin_health_monitor_lock);
return;
}
#define USB_VALID_DEBOUNCE_TIME_MASK 0x3
#define USB_DEB_BYPASS 0x0
#define USB_DEB_5MS 0x1
#define USB_DEB_10MS 0x2
#define USB_DEB_20MS 0x3
static irqreturn_t
qpnp_chg_coarse_det_usb_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
int host_mode, rc = 0;
int debounce[] = {
[USB_DEB_BYPASS] = 0,
[USB_DEB_5MS] = 5,
[USB_DEB_10MS] = 10,
[USB_DEB_20MS] = 20 };
u8 ovp_ctl;
bool usb_coarse_det;
host_mode = qpnp_chg_is_otg_en_set(chip);
usb_coarse_det = qpnp_chg_check_usb_coarse_det(chip);
pr_debug("usb coarse-det triggered: %d host_mode: %d\n",
usb_coarse_det, host_mode);
if (host_mode)
return IRQ_HANDLED;
/* ignore to monitor OVP in usbin valid irq handler
if the coarse-det fired first, do the OVP state monitor
in the usbin_health_check work, and after the work,
enable monitor OVP in usbin valid irq handler */
chip->usb_valid_check_ovp = false;
if (chip->usb_coarse_det ^ usb_coarse_det) {
chip->usb_coarse_det = usb_coarse_det;
if (usb_coarse_det) {
/* usb coarse-det rising edge, check the usbin_valid
debounce time setting, and start a delay work to
check the OVP status*/
rc = qpnp_chg_read(chip, &ovp_ctl,
chip->usb_chgpth_base + USB_OVP_CTL, 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
chip->usb_chgpth_base + USB_OVP_CTL,
rc);
return rc;
}
ovp_ctl = ovp_ctl & USB_VALID_DEBOUNCE_TIME_MASK;
schedule_delayed_work(&chip->usbin_health_check,
msecs_to_jiffies(debounce[ovp_ctl]));
} else {
/* usb coarse-det rising edge, set the usb psy health
status to unknown */
pr_debug("usb coarse det clear, set usb health to unknown\n");
chip->usbin_health = USBIN_UNKNOW;
power_supply_set_health_state(chip->usb_psy,
POWER_SUPPLY_HEALTH_UNKNOWN);
power_supply_changed(chip->usb_psy);
}
}
return IRQ_HANDLED;
}
#define BATFET_LPM_MASK 0xC0
#define BATFET_LPM 0x40
#define BATFET_NO_LPM 0x00
static int
qpnp_chg_regulator_batfet_set(struct qpnp_chg_chip *chip, bool enable)
{
int rc = 0;
if (chip->charging_disabled || !chip->bat_if_base)
return rc;
if (chip->type == SMBB)
rc = qpnp_chg_masked_write(chip,
chip->bat_if_base + CHGR_BAT_IF_SPARE,
BATFET_LPM_MASK,
enable ? BATFET_NO_LPM : BATFET_LPM, 1);
else
rc = qpnp_chg_masked_write(chip,
chip->bat_if_base + CHGR_BAT_IF_BATFET_CTRL4,
BATFET_LPM_MASK,
enable ? BATFET_NO_LPM : BATFET_LPM, 1);
return rc;
}
#define ENUM_T_STOP_BIT BIT(0)
static irqreturn_t
qpnp_chg_usb_usbin_valid_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
int usb_present, host_mode, usbin_health;
u8 psy_health_sts;
usb_present = qpnp_chg_is_usb_chg_plugged_in(chip);
host_mode = qpnp_chg_is_otg_en_set(chip);
pr_debug("usbin-valid triggered: %d host_mode: %d\n",
usb_present, host_mode);
/* In host mode notifications cmoe from USB supply */
if (host_mode)
return IRQ_HANDLED;
if (chip->usb_present ^ usb_present) {
chip->usb_present = usb_present;
if (!usb_present) {
/* when a valid charger inserted, and increase the
* charger voltage to OVP threshold, then
* usb_in_valid falling edge interrupt triggers.
* So we handle the OVP monitor here, and ignore
* other health state changes */
if (chip->ovp_monitor_enable &&
(chip->usb_valid_check_ovp)) {
usbin_health =
qpnp_chg_check_usbin_health(chip);
if ((chip->usbin_health != usbin_health)
&& (usbin_health == USBIN_OVP)) {
chip->usbin_health = usbin_health;
psy_health_sts =
POWER_SUPPLY_HEALTH_OVERVOLTAGE;
power_supply_set_health_state(
chip->usb_psy,
psy_health_sts);
power_supply_changed(chip->usb_psy);
}
}
if (!qpnp_chg_is_dc_chg_plugged_in(chip)) {
chip->delta_vddmax_mv = 0;
qpnp_chg_set_appropriate_vddmax(chip);
chip->chg_done = false;
}
qpnp_chg_usb_suspend_enable(chip, 0);
chip->prev_usb_max_ma = -EINVAL;
chip->aicl_settled = false;
} else {
/* when OVP clamped usbin, and then decrease
* the charger voltage to lower than the OVP
* threshold, a usbin_valid rising edge
* interrupt triggered. So we change the usb
* psy health state back to good */
if (chip->ovp_monitor_enable &&
(chip->usb_valid_check_ovp)) {
usbin_health =
qpnp_chg_check_usbin_health(chip);
if ((chip->usbin_health != usbin_health)
&& (usbin_health == USBIN_OK)) {
chip->usbin_health = usbin_health;
psy_health_sts =
POWER_SUPPLY_HEALTH_GOOD;
power_supply_set_health_state(
chip->usb_psy,
psy_health_sts);
power_supply_changed(chip->usb_psy);
}
}
if (!qpnp_chg_is_dc_chg_plugged_in(chip)) {
chip->delta_vddmax_mv = 0;
qpnp_chg_set_appropriate_vddmax(chip);
}
schedule_delayed_work(&chip->eoc_work,
msecs_to_jiffies(EOC_CHECK_PERIOD_MS));
schedule_work(&chip->soc_check_work);
}
power_supply_set_present(chip->usb_psy, chip->usb_present);
schedule_work(&chip->batfet_lcl_work);
}
return IRQ_HANDLED;
}
static irqreturn_t
qpnp_chg_bat_if_batt_temp_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
int batt_temp_good;
batt_temp_good = qpnp_chg_is_batt_temp_ok(chip);
pr_debug("batt-temp triggered: %d\n", batt_temp_good);
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
return IRQ_HANDLED;
}
static irqreturn_t
qpnp_chg_bat_if_batt_pres_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
int batt_present;
batt_present = qpnp_chg_is_batt_present(chip);
pr_debug("batt-pres triggered: %d\n", batt_present);
if (chip->batt_present ^ batt_present) {
if (batt_present) {
schedule_work(&chip->insertion_ocv_work);
} else {
chip->insertion_ocv_uv = 0;
qpnp_chg_charge_en(chip, 0);
}
chip->batt_present = batt_present;
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
pr_debug("psy changed usb_psy\n");
power_supply_changed(chip->usb_psy);
if ((chip->cool_bat_decidegc || chip->warm_bat_decidegc)
&& batt_present) {
pr_debug("enabling vadc notifications\n");
schedule_work(&chip->adc_measure_work);
} else if ((chip->cool_bat_decidegc || chip->warm_bat_decidegc)
&& !batt_present) {
schedule_work(&chip->adc_disable_work);
pr_debug("disabling vadc notifications\n");
}
}
return IRQ_HANDLED;
}
static irqreturn_t
qpnp_chg_dc_dcin_valid_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
int dc_present;
dc_present = qpnp_chg_is_dc_chg_plugged_in(chip);
pr_debug("dcin-valid triggered: %d\n", dc_present);
if (chip->dc_present ^ dc_present) {
chip->dc_present = dc_present;
if (qpnp_chg_is_otg_en_set(chip))
qpnp_chg_force_run_on_batt(chip, !dc_present ? 1 : 0);
if (!dc_present && !qpnp_chg_is_usb_chg_plugged_in(chip)) {
chip->delta_vddmax_mv = 0;
qpnp_chg_set_appropriate_vddmax(chip);
chip->chg_done = false;
} else {
if (!qpnp_chg_is_usb_chg_plugged_in(chip)) {
chip->delta_vddmax_mv = 0;
qpnp_chg_set_appropriate_vddmax(chip);
}
schedule_delayed_work(&chip->eoc_work,
msecs_to_jiffies(EOC_CHECK_PERIOD_MS));
schedule_work(&chip->soc_check_work);
}
pr_debug("psy changed dc_psy\n");
power_supply_changed(&chip->dc_psy);
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
schedule_work(&chip->batfet_lcl_work);
}
return IRQ_HANDLED;
}
#define CHGR_CHG_FAILED_BIT BIT(7)
static irqreturn_t
qpnp_chg_chgr_chg_failed_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
int rc;
pr_debug("chg_failed triggered\n");
rc = qpnp_chg_masked_write(chip,
chip->chgr_base + CHGR_CHG_FAILED,
CHGR_CHG_FAILED_BIT,
CHGR_CHG_FAILED_BIT, 1);
if (rc)
pr_err("Failed to write chg_fail clear bit!\n");
if (chip->bat_if_base) {
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
}
pr_debug("psy changed usb_psy\n");
power_supply_changed(chip->usb_psy);
if (chip->dc_chgpth_base) {
pr_debug("psy changed dc_psy\n");
power_supply_changed(&chip->dc_psy);
}
return IRQ_HANDLED;
}
static irqreturn_t
qpnp_chg_chgr_chg_trklchg_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
pr_debug("TRKL IRQ triggered\n");
chip->chg_done = false;
if (chip->bat_if_base) {
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
}
return IRQ_HANDLED;
}
static irqreturn_t
qpnp_chg_chgr_chg_fastchg_irq_handler(int irq, void *_chip)
{
struct qpnp_chg_chip *chip = _chip;
u8 chgr_sts;
int rc;
rc = qpnp_chg_read(chip, &chgr_sts, INT_RT_STS(chip->chgr_base), 1);
if (rc)
pr_err("failed to read interrupt sts %d\n", rc);
pr_debug("FAST_CHG IRQ triggered\n");
chip->chg_done = false;
if (chip->bat_if_base) {
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
}
pr_debug("psy changed usb_psy\n");
power_supply_changed(chip->usb_psy);
if (chip->dc_chgpth_base) {
pr_debug("psy changed dc_psy\n");
power_supply_changed(&chip->dc_psy);
}
if (chip->resuming_charging) {
chip->resuming_charging = false;
qpnp_chg_set_appropriate_vbatdet(chip);
}
if (!chip->charging_disabled) {
schedule_delayed_work(&chip->eoc_work,
msecs_to_jiffies(EOC_CHECK_PERIOD_MS));
pm_stay_awake(chip->dev);
}
qpnp_chg_enable_irq(&chip->chg_vbatdet_lo);
return IRQ_HANDLED;
}
static int
qpnp_dc_property_is_writeable(struct power_supply *psy,
enum power_supply_property psp)
{
switch (psp) {
case POWER_SUPPLY_PROP_CURRENT_MAX:
return 1;
default:
break;
}
return 0;
}
static int
qpnp_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_SYSTEM_TEMP_LEVEL:
case POWER_SUPPLY_PROP_INPUT_CURRENT_MAX:
case POWER_SUPPLY_PROP_INPUT_CURRENT_TRIM:
case POWER_SUPPLY_PROP_INPUT_CURRENT_SETTLED:
case POWER_SUPPLY_PROP_VOLTAGE_MIN:
case POWER_SUPPLY_PROP_COOL_TEMP:
case POWER_SUPPLY_PROP_WARM_TEMP:
case POWER_SUPPLY_PROP_CAPACITY:
return 1;
default:
break;
}
return 0;
}
static int
qpnp_chg_buck_control(struct qpnp_chg_chip *chip, int enable)
{
int rc;
if (chip->charging_disabled && enable) {
pr_debug("Charging disabled\n");
return 0;
}
rc = qpnp_chg_charge_en(chip, enable);
if (rc) {
pr_err("Failed to control charging %d\n", rc);
return rc;
}
rc = qpnp_chg_force_run_on_batt(chip, !enable);
if (rc)
pr_err("Failed to control charging %d\n", rc);
return rc;
}
static int
switch_usb_to_charge_mode(struct qpnp_chg_chip *chip)
{
int rc;
pr_debug("switch to charge mode\n");
if (!qpnp_chg_is_otg_en_set(chip))
return 0;
/* enable usb ovp fet */
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + CHGR_USB_USB_OTG_CTL,
USB_OTG_EN_BIT,
0, 1);
if (rc) {
pr_err("Failed to turn on usb ovp rc = %d\n", rc);
return rc;
}
rc = qpnp_chg_force_run_on_batt(chip, chip->charging_disabled);
if (rc) {
pr_err("Failed re-enable charging rc = %d\n", rc);
return rc;
}
return 0;
}
static int
switch_usb_to_host_mode(struct qpnp_chg_chip *chip)
{
int rc;
pr_debug("switch to host mode\n");
if (qpnp_chg_is_otg_en_set(chip))
return 0;
if (!qpnp_chg_is_dc_chg_plugged_in(chip)) {
rc = qpnp_chg_force_run_on_batt(chip, 1);
if (rc) {
pr_err("Failed to disable charging rc = %d\n", rc);
return rc;
}
}
/* force usb ovp fet off */
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + CHGR_USB_USB_OTG_CTL,
USB_OTG_EN_BIT,
USB_OTG_EN_BIT, 1);
if (rc) {
pr_err("Failed to turn off usb ovp rc = %d\n", rc);
return rc;
}
return 0;
}
static enum power_supply_property pm_power_props_mains[] = {
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_CURRENT_MAX,
};
static enum power_supply_property msm_batt_power_props[] = {
POWER_SUPPLY_PROP_CHARGING_ENABLED,
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_CHARGE_TYPE,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_INPUT_CURRENT_MAX,
POWER_SUPPLY_PROP_INPUT_CURRENT_TRIM,
POWER_SUPPLY_PROP_INPUT_CURRENT_SETTLED,
POWER_SUPPLY_PROP_VOLTAGE_MIN,
POWER_SUPPLY_PROP_INPUT_VOLTAGE_REGULATION,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_CHARGE_FULL,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_COOL_TEMP,
POWER_SUPPLY_PROP_WARM_TEMP,
POWER_SUPPLY_PROP_SYSTEM_TEMP_LEVEL,
POWER_SUPPLY_PROP_CYCLE_COUNT,
POWER_SUPPLY_PROP_VOLTAGE_OCV,
};
static char *pm_power_supplied_to[] = {
"battery",
};
static char *pm_batt_supplied_to[] = {
"bms",
};
static int charger_monitor;
module_param(charger_monitor, int, 0644);
static int ext_ovp_present;
module_param(ext_ovp_present, int, 0444);
#define USB_WALL_THRESHOLD_MA 500
#define OVP_USB_WALL_THRESHOLD_MA 200
static int
qpnp_power_get_property_mains(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct qpnp_chg_chip *chip = container_of(psy, struct qpnp_chg_chip,
dc_psy);
switch (psp) {
case POWER_SUPPLY_PROP_PRESENT:
case POWER_SUPPLY_PROP_ONLINE:
val->intval = 0;
if (chip->charging_disabled)
return 0;
val->intval = qpnp_chg_is_dc_chg_plugged_in(chip);
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
val->intval = chip->maxinput_dc_ma * 1000;
break;
default:
return -EINVAL;
}
return 0;
}
static void
qpnp_aicl_check_work(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct qpnp_chg_chip *chip = container_of(dwork,
struct qpnp_chg_chip, aicl_check_work);
union power_supply_propval ret = {0,};
if (!charger_monitor && qpnp_chg_is_usb_chg_plugged_in(chip)) {
chip->usb_psy->get_property(chip->usb_psy,
POWER_SUPPLY_PROP_CURRENT_MAX, &ret);
if ((ret.intval / 1000) > USB_WALL_THRESHOLD_MA) {
pr_debug("no charger_monitor present set iusbmax %d\n",
ret.intval / 1000);
qpnp_chg_iusbmax_set(chip, ret.intval / 1000);
}
} else {
pr_debug("charger_monitor is present\n");
}
chip->charger_monitor_checked = true;
}
static int
get_prop_battery_voltage_now(struct qpnp_chg_chip *chip)
{
int rc = 0;
struct qpnp_vadc_result results;
if (chip->revision == 0 && chip->type == SMBB) {
pr_err("vbat reading not supported for 1.0 rc=%d\n", rc);
return 0;
} else {
rc = qpnp_vadc_read(chip->vadc_dev, VBAT_SNS, &results);
if (rc) {
pr_err("Unable to read vbat rc=%d\n", rc);
return 0;
}
return results.physical;
}
}
#define BATT_PRES_BIT BIT(7)
static int
get_prop_batt_present(struct qpnp_chg_chip *chip)
{
u8 batt_present;
int rc;
rc = qpnp_chg_read(chip, &batt_present,
chip->bat_if_base + CHGR_BAT_IF_PRES_STATUS, 1);
if (rc) {
pr_err("Couldn't read battery status read failed rc=%d\n", rc);
return 0;
};
return (batt_present & BATT_PRES_BIT) ? 1 : 0;
}
#define BATT_TEMP_HOT BIT(6)
#define BATT_TEMP_OK BIT(7)
static int
get_prop_batt_health(struct qpnp_chg_chip *chip)
{
u8 batt_health;
int rc;
rc = qpnp_chg_read(chip, &batt_health,
chip->bat_if_base + CHGR_STATUS, 1);
if (rc) {
pr_err("Couldn't read battery health read failed rc=%d\n", rc);
return POWER_SUPPLY_HEALTH_UNKNOWN;
};
if (BATT_TEMP_OK & batt_health)
return POWER_SUPPLY_HEALTH_GOOD;
if (BATT_TEMP_HOT & batt_health)
return POWER_SUPPLY_HEALTH_OVERHEAT;
else
return POWER_SUPPLY_HEALTH_COLD;
}
static int
get_prop_charge_type(struct qpnp_chg_chip *chip)
{
int rc;
u8 chgr_sts;
if (!get_prop_batt_present(chip))
return POWER_SUPPLY_CHARGE_TYPE_NONE;
rc = qpnp_chg_read(chip, &chgr_sts,
INT_RT_STS(chip->chgr_base), 1);
if (rc) {
pr_err("failed to read interrupt sts %d\n", rc);
return POWER_SUPPLY_CHARGE_TYPE_NONE;
}
if (chgr_sts & TRKL_CHG_ON_IRQ)
return POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
if (chgr_sts & FAST_CHG_ON_IRQ)
return POWER_SUPPLY_CHARGE_TYPE_FAST;
return POWER_SUPPLY_CHARGE_TYPE_NONE;
}
static int
get_prop_batt_status(struct qpnp_chg_chip *chip)
{
int rc;
u8 chgr_sts, bat_if_sts;
if ((qpnp_chg_is_usb_chg_plugged_in(chip) ||
qpnp_chg_is_dc_chg_plugged_in(chip)) && chip->chg_done) {
return POWER_SUPPLY_STATUS_FULL;
}
rc = qpnp_chg_read(chip, &chgr_sts, INT_RT_STS(chip->chgr_base), 1);
if (rc) {
pr_err("failed to read interrupt sts %d\n", rc);
return POWER_SUPPLY_CHARGE_TYPE_NONE;
}
rc = qpnp_chg_read(chip, &bat_if_sts, INT_RT_STS(chip->bat_if_base), 1);
if (rc) {
pr_err("failed to read bat_if sts %d\n", rc);
return POWER_SUPPLY_CHARGE_TYPE_NONE;
}
if (chgr_sts & TRKL_CHG_ON_IRQ && bat_if_sts & BAT_FET_ON_IRQ)
return POWER_SUPPLY_STATUS_CHARGING;
if (chgr_sts & FAST_CHG_ON_IRQ && bat_if_sts & BAT_FET_ON_IRQ)
return POWER_SUPPLY_STATUS_CHARGING;
return POWER_SUPPLY_STATUS_DISCHARGING;
}
static int
get_prop_current_now(struct qpnp_chg_chip *chip)
{
union power_supply_propval ret = {0,};
if (chip->bms_psy) {
chip->bms_psy->get_property(chip->bms_psy,
POWER_SUPPLY_PROP_CURRENT_NOW, &ret);
return ret.intval;
} else {
pr_debug("No BMS supply registered return 0\n");
}
return 0;
}
static int
get_prop_full_design(struct qpnp_chg_chip *chip)
{
union power_supply_propval ret = {0,};
if (chip->bms_psy) {
chip->bms_psy->get_property(chip->bms_psy,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, &ret);
return ret.intval;
} else {
pr_debug("No BMS supply registered return 0\n");
}
return 0;
}
static int
get_prop_charge_full(struct qpnp_chg_chip *chip)
{
union power_supply_propval ret = {0,};
if (chip->bms_psy) {
chip->bms_psy->get_property(chip->bms_psy,
POWER_SUPPLY_PROP_CHARGE_FULL, &ret);
return ret.intval;
} else {
pr_debug("No BMS supply registered return 0\n");
}
return 0;
}
#define DEFAULT_CAPACITY 50
static int
get_prop_capacity(struct qpnp_chg_chip *chip)
{
union power_supply_propval ret = {0,};
int battery_status, bms_status, soc, charger_in;
if (chip->fake_battery_soc >= 0)
return chip->fake_battery_soc;
if (chip->use_default_batt_values || !get_prop_batt_present(chip))
return DEFAULT_CAPACITY;
if (chip->bms_psy) {
chip->bms_psy->get_property(chip->bms_psy,
POWER_SUPPLY_PROP_CAPACITY, &ret);
soc = ret.intval;
battery_status = get_prop_batt_status(chip);
chip->bms_psy->get_property(chip->bms_psy,
POWER_SUPPLY_PROP_STATUS, &ret);
bms_status = ret.intval;
charger_in = qpnp_chg_is_usb_chg_plugged_in(chip) ||
qpnp_chg_is_dc_chg_plugged_in(chip);
if (battery_status != POWER_SUPPLY_STATUS_CHARGING
&& bms_status != POWER_SUPPLY_STATUS_CHARGING
&& charger_in
&& !chip->bat_is_cool
&& !chip->bat_is_warm
&& !chip->resuming_charging
&& !chip->charging_disabled
&& chip->soc_resume_limit
&& soc <= chip->soc_resume_limit) {
pr_debug("resuming charging at %d%% soc\n", soc);
chip->resuming_charging = true;
qpnp_chg_set_appropriate_vbatdet(chip);
qpnp_chg_charge_en(chip, !chip->charging_disabled);
}
if (soc == 0) {
if (!qpnp_chg_is_usb_chg_plugged_in(chip)
&& !qpnp_chg_is_usb_chg_plugged_in(chip))
pr_warn_ratelimited("Battery 0, CHG absent\n");
}
return soc;
} else {
pr_debug("No BMS supply registered return 50\n");
}
/* return default capacity to avoid userspace
* from shutting down unecessarily */
return DEFAULT_CAPACITY;
}
#define DEFAULT_TEMP 250
#define MAX_TOLERABLE_BATT_TEMP_DDC 680
static int
get_prop_batt_temp(struct qpnp_chg_chip *chip)
{
int rc = 0;
struct qpnp_vadc_result results;
if (chip->use_default_batt_values || !get_prop_batt_present(chip))
return DEFAULT_TEMP;
rc = qpnp_vadc_read(chip->vadc_dev, LR_MUX1_BATT_THERM, &results);
if (rc) {
pr_debug("Unable to read batt temperature rc=%d\n", rc);
return 0;
}
pr_debug("get_bat_temp %d %lld\n",
results.adc_code, results.physical);
return (int)results.physical;
}
static int get_prop_cycle_count(struct qpnp_chg_chip *chip)
{
union power_supply_propval ret = {0,};
if (chip->bms_psy)
chip->bms_psy->get_property(chip->bms_psy,
POWER_SUPPLY_PROP_CYCLE_COUNT, &ret);
return ret.intval;
}
static int get_prop_vchg_loop(struct qpnp_chg_chip *chip)
{
u8 buck_sts;
int rc;
rc = qpnp_chg_read(chip, &buck_sts, INT_RT_STS(chip->buck_base), 1);
if (rc) {
pr_err("spmi read failed: addr=%03X, rc=%d\n",
INT_RT_STS(chip->buck_base), rc);
return rc;
}
pr_debug("buck usb sts 0x%x\n", buck_sts);
return (buck_sts & VCHG_LOOP_IRQ) ? 1 : 0;
}
static int get_prop_online(struct qpnp_chg_chip *chip)
{
return qpnp_chg_is_batfet_closed(chip);
}
static void
qpnp_batt_external_power_changed(struct power_supply *psy)
{
struct qpnp_chg_chip *chip = container_of(psy, struct qpnp_chg_chip,
batt_psy);
union power_supply_propval ret = {0,};
if (!chip->bms_psy)
chip->bms_psy = power_supply_get_by_name("bms");
chip->usb_psy->get_property(chip->usb_psy,
POWER_SUPPLY_PROP_ONLINE, &ret);
/* Only honour requests while USB is present */
if (qpnp_chg_is_usb_chg_plugged_in(chip)) {
chip->usb_psy->get_property(chip->usb_psy,
POWER_SUPPLY_PROP_CURRENT_MAX, &ret);
if (chip->prev_usb_max_ma == ret.intval)
goto skip_set_iusb_max;
chip->prev_usb_max_ma = ret.intval;
if (ret.intval <= 2 && !chip->use_default_batt_values &&
get_prop_batt_present(chip)) {
if (ret.intval == 2)
qpnp_chg_usb_suspend_enable(chip, 1);
qpnp_chg_iusbmax_set(chip, QPNP_CHG_I_MAX_MIN_100);
} else {
qpnp_chg_usb_suspend_enable(chip, 0);
if (((ret.intval / 1000) > USB_WALL_THRESHOLD_MA)
&& (charger_monitor ||
!chip->charger_monitor_checked)) {
if (!ext_ovp_present)
qpnp_chg_iusbmax_set(chip,
USB_WALL_THRESHOLD_MA);
else
qpnp_chg_iusbmax_set(chip,
OVP_USB_WALL_THRESHOLD_MA);
} else {
qpnp_chg_iusbmax_set(chip, ret.intval / 1000);
}
if ((chip->flags & POWER_STAGE_WA)
&& ((ret.intval / 1000) > USB_WALL_THRESHOLD_MA)
&& !chip->power_stage_workaround_running
&& chip->power_stage_workaround_enable) {
chip->power_stage_workaround_running = true;
pr_debug("usb wall chg inserted starting power stage workaround charger_monitor = %d\n",
charger_monitor);
schedule_work(&chip->reduce_power_stage_work);
}
}
}
skip_set_iusb_max:
pr_debug("end of power supply changed\n");
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
}
static int
qpnp_batt_power_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct qpnp_chg_chip *chip = container_of(psy, struct qpnp_chg_chip,
batt_psy);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = get_prop_batt_status(chip);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
val->intval = get_prop_charge_type(chip);
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = get_prop_batt_health(chip);
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = get_prop_batt_present(chip);
break;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
val->intval = chip->max_voltage_mv * 1000;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
val->intval = chip->min_voltage_mv * 1000;
break;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = get_prop_battery_voltage_now(chip);
break;
case POWER_SUPPLY_PROP_VOLTAGE_OCV:
val->intval = chip->insertion_ocv_uv;
break;
case POWER_SUPPLY_PROP_TEMP:
val->intval = get_prop_batt_temp(chip);
break;
case POWER_SUPPLY_PROP_COOL_TEMP:
val->intval = chip->cool_bat_decidegc;
break;
case POWER_SUPPLY_PROP_WARM_TEMP:
val->intval = chip->warm_bat_decidegc;
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = get_prop_capacity(chip);
break;
case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = get_prop_current_now(chip);
break;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
val->intval = get_prop_full_design(chip);
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
val->intval = get_prop_charge_full(chip);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
val->intval = !(chip->charging_disabled);
break;
case POWER_SUPPLY_PROP_SYSTEM_TEMP_LEVEL:
val->intval = chip->therm_lvl_sel;
break;
case POWER_SUPPLY_PROP_CYCLE_COUNT:
val->intval = get_prop_cycle_count(chip);
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_REGULATION:
val->intval = get_prop_vchg_loop(chip);
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_MAX:
val->intval = qpnp_chg_usb_iusbmax_get(chip) * 1000;
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_TRIM:
val->intval = qpnp_chg_iusb_trim_get(chip);
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_SETTLED:
val->intval = chip->aicl_settled;
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN:
val->intval = qpnp_chg_vinmin_get(chip) * 1000;
break;
case POWER_SUPPLY_PROP_ONLINE:
val->intval = get_prop_online(chip);
break;
default:
return -EINVAL;
}
return 0;
}
#define BTC_CONFIG_ENABLED BIT(7)
#define BTC_COLD BIT(1)
#define BTC_HOT BIT(0)
static int
qpnp_chg_bat_if_configure_btc(struct qpnp_chg_chip *chip)
{
u8 btc_cfg = 0, mask = 0;
/* Do nothing if battery peripheral not present */
if (!chip->bat_if_base)
return 0;
if ((chip->hot_batt_p == HOT_THD_25_PCT)
|| (chip->hot_batt_p == HOT_THD_35_PCT)) {
btc_cfg |= btc_value[chip->hot_batt_p];
mask |= BTC_HOT;
}
if ((chip->cold_batt_p == COLD_THD_70_PCT) ||
(chip->cold_batt_p == COLD_THD_80_PCT)) {
btc_cfg |= btc_value[chip->cold_batt_p];
mask |= BTC_COLD;
}
if (chip->btc_disabled)
mask |= BTC_CONFIG_ENABLED;
return qpnp_chg_masked_write(chip,
chip->bat_if_base + BAT_IF_BTC_CTRL,
mask, btc_cfg, 1);
}
#define QPNP_CHG_IBATSAFE_MIN_MA 100
#define QPNP_CHG_IBATSAFE_MAX_MA 3250
#define QPNP_CHG_I_STEP_MA 50
#define QPNP_CHG_I_MIN_MA 100
#define QPNP_CHG_I_MASK 0x3F
static int
qpnp_chg_ibatsafe_set(struct qpnp_chg_chip *chip, int safe_current)
{
u8 temp;
if (safe_current < QPNP_CHG_IBATSAFE_MIN_MA
|| safe_current > QPNP_CHG_IBATSAFE_MAX_MA) {
pr_err("bad mA=%d asked to set\n", safe_current);
return -EINVAL;
}
temp = safe_current / QPNP_CHG_I_STEP_MA;
return qpnp_chg_masked_write(chip,
chip->chgr_base + CHGR_IBAT_SAFE,
QPNP_CHG_I_MASK, temp, 1);
}
#define QPNP_CHG_ITERM_MIN_MA 100
#define QPNP_CHG_ITERM_MAX_MA 250
#define QPNP_CHG_ITERM_STEP_MA 50
#define QPNP_CHG_ITERM_MASK 0x03
static int
qpnp_chg_ibatterm_set(struct qpnp_chg_chip *chip, int term_current)
{
u8 temp;
if (term_current < QPNP_CHG_ITERM_MIN_MA
|| term_current > QPNP_CHG_ITERM_MAX_MA) {
pr_err("bad mA=%d asked to set\n", term_current);
return -EINVAL;
}
temp = (term_current - QPNP_CHG_ITERM_MIN_MA)
/ QPNP_CHG_ITERM_STEP_MA;
return qpnp_chg_masked_write(chip,
chip->chgr_base + CHGR_IBAT_TERM_CHGR,
QPNP_CHG_ITERM_MASK, temp, 1);
}
#define QPNP_CHG_IBATMAX_MIN 50
#define QPNP_CHG_IBATMAX_MAX 3250
static int
qpnp_chg_ibatmax_set(struct qpnp_chg_chip *chip, int chg_current)
{
u8 temp;
if (chg_current < QPNP_CHG_IBATMAX_MIN
|| chg_current > QPNP_CHG_IBATMAX_MAX) {
pr_err("bad mA=%d asked to set\n", chg_current);
return -EINVAL;
}
temp = chg_current / QPNP_CHG_I_STEP_MA;
return qpnp_chg_masked_write(chip, chip->chgr_base + CHGR_IBAT_MAX,
QPNP_CHG_I_MASK, temp, 1);
}
static int
qpnp_chg_ibatmax_get(struct qpnp_chg_chip *chip, int *chg_current)
{
int rc;
u8 temp;
*chg_current = 0;
rc = qpnp_chg_read(chip, &temp, chip->chgr_base + CHGR_IBAT_MAX, 1);
if (rc) {
pr_err("failed read ibat_max rc=%d\n", rc);
return rc;
}
*chg_current = ((temp & QPNP_CHG_I_MASK) * QPNP_CHG_I_STEP_MA);
return 0;
}
#define QPNP_CHG_TCHG_MASK 0x7F
#define QPNP_CHG_TCHG_EN_MASK 0x80
#define QPNP_CHG_TCHG_MIN 4
#define QPNP_CHG_TCHG_MAX 512
#define QPNP_CHG_TCHG_STEP 4
static int qpnp_chg_tchg_max_set(struct qpnp_chg_chip *chip, int minutes)
{
u8 temp;
int rc;
if (minutes < QPNP_CHG_TCHG_MIN || minutes > QPNP_CHG_TCHG_MAX) {
pr_err("bad max minutes =%d asked to set\n", minutes);
return -EINVAL;
}
rc = qpnp_chg_masked_write(chip, chip->chgr_base + CHGR_TCHG_MAX_EN,
QPNP_CHG_TCHG_EN_MASK, 0, 1);
if (rc) {
pr_err("failed write tchg_max_en rc=%d\n", rc);
return rc;
}
temp = minutes / QPNP_CHG_TCHG_STEP - 1;
rc = qpnp_chg_masked_write(chip, chip->chgr_base + CHGR_TCHG_MAX,
QPNP_CHG_TCHG_MASK, temp, 1);
if (rc) {
pr_err("failed write tchg_max_en rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip, chip->chgr_base + CHGR_TCHG_MAX_EN,
QPNP_CHG_TCHG_EN_MASK, QPNP_CHG_TCHG_EN_MASK, 1);
if (rc) {
pr_err("failed write tchg_max_en rc=%d\n", rc);
return rc;
}
return 0;
}
static int
qpnp_chg_vddsafe_set(struct qpnp_chg_chip *chip, int voltage)
{
u8 temp;
if (voltage < QPNP_CHG_V_MIN_MV
|| voltage > QPNP_CHG_V_MAX_MV) {
pr_err("bad mV=%d asked to set\n", voltage);
return -EINVAL;
}
temp = (voltage - QPNP_CHG_V_MIN_MV) / QPNP_CHG_V_STEP_MV;
pr_debug("voltage=%d setting %02x\n", voltage, temp);
return qpnp_chg_write(chip, &temp,
chip->chgr_base + CHGR_VDD_SAFE, 1);
}
#define IBAT_TRIM_TGT_MA 500
#define IBAT_TRIM_OFFSET_MASK 0x7F
#define IBAT_TRIM_GOOD_BIT BIT(7)
#define IBAT_TRIM_LOW_LIM 20
#define IBAT_TRIM_HIGH_LIM 114
#define IBAT_TRIM_MEAN 64
static void
qpnp_chg_trim_ibat(struct qpnp_chg_chip *chip, u8 ibat_trim)
{
int ibat_now_ma, ibat_diff_ma, rc;
struct qpnp_iadc_result i_result;
enum qpnp_iadc_channels iadc_channel;
iadc_channel = chip->use_external_rsense ?
EXTERNAL_RSENSE : INTERNAL_RSENSE;
rc = qpnp_iadc_read(chip->iadc_dev, iadc_channel, &i_result);
if (rc) {
pr_err("Unable to read bat rc=%d\n", rc);
return;
}
ibat_now_ma = i_result.result_ua / 1000;
if (qpnp_chg_is_ibat_loop_active(chip)) {
ibat_diff_ma = ibat_now_ma - IBAT_TRIM_TGT_MA;
if (abs(ibat_diff_ma) > 50) {
ibat_trim += (ibat_diff_ma / 20);
ibat_trim &= IBAT_TRIM_OFFSET_MASK;
/* reject new ibat_trim if it is outside limits */
if (!is_within_range(ibat_trim, IBAT_TRIM_LOW_LIM,
IBAT_TRIM_HIGH_LIM))
return;
}
ibat_trim |= IBAT_TRIM_GOOD_BIT;
rc = qpnp_chg_write(chip, &ibat_trim,
chip->buck_base + BUCK_CTRL_TRIM3, 1);
if (rc)
pr_err("failed to set IBAT_TRIM rc=%d\n", rc);
pr_debug("ibat_now=%dmA, itgt=%dmA, ibat_diff=%dmA, ibat_trim=%x\n",
ibat_now_ma, IBAT_TRIM_TGT_MA,
ibat_diff_ma, ibat_trim);
} else {
pr_debug("ibat loop not active - cannot calibrate ibat\n");
}
}
static int
qpnp_chg_input_current_settled(struct qpnp_chg_chip *chip)
{
int rc, ibat_max_ma;
u8 reg, chgr_sts, ibat_trim, i;
chip->aicl_settled = true;
/*
* Perform the ibat calibration.
* This is for devices which have a IBAT_TRIM error
* which can show IBAT_MAX out of spec.
*/
if (!chip->ibat_calibration_enabled)
return 0;
if (chip->type != SMBB)
return 0;
rc = qpnp_chg_read(chip, &reg,
chip->buck_base + BUCK_CTRL_TRIM3, 1);
if (rc) {
pr_err("failed to read BUCK_CTRL_TRIM3 rc=%d\n", rc);
return rc;
}
if (reg & IBAT_TRIM_GOOD_BIT) {
pr_debug("IBAT_TRIM_GOOD bit already set. Quitting!\n");
return 0;
}
ibat_trim = reg & IBAT_TRIM_OFFSET_MASK;
if (!is_within_range(ibat_trim, IBAT_TRIM_LOW_LIM,
IBAT_TRIM_HIGH_LIM)) {
pr_debug("Improper ibat_trim value=%x setting to value=%x\n",
ibat_trim, IBAT_TRIM_MEAN);
ibat_trim = IBAT_TRIM_MEAN;
rc = qpnp_chg_masked_write(chip,
chip->buck_base + BUCK_CTRL_TRIM3,
IBAT_TRIM_OFFSET_MASK, ibat_trim, 1);
if (rc) {
pr_err("failed to set ibat_trim to %x rc=%d\n",
IBAT_TRIM_MEAN, rc);
return rc;
}
}
rc = qpnp_chg_read(chip, &chgr_sts,
INT_RT_STS(chip->chgr_base), 1);
if (rc) {
pr_err("failed to read interrupt sts rc=%d\n", rc);
return rc;
}
if (!(chgr_sts & FAST_CHG_ON_IRQ)) {
pr_debug("Not in fastchg\n");
return rc;
}
/* save the ibat_max to restore it later */
rc = qpnp_chg_ibatmax_get(chip, &ibat_max_ma);
if (rc) {
pr_debug("failed to save ibatmax rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_ibatmax_set(chip, IBAT_TRIM_TGT_MA);
if (rc) {
pr_err("failed to set ibatmax rc=%d\n", rc);
return rc;
}
for (i = 0; i < 3; i++) {
/*
* ibat settling delay - to make sure the BMS controller
* has sufficient time to sample ibat for the configured
* ibat_max
*/
msleep(20);
if (qpnp_chg_is_ibat_loop_active(chip))
qpnp_chg_trim_ibat(chip, ibat_trim);
else
pr_debug("ibat loop not active\n");
/* read the adjusted ibat_trim for further adjustments */
rc = qpnp_chg_read(chip, &ibat_trim,
chip->buck_base + BUCK_CTRL_TRIM3, 1);
if (rc) {
pr_err("failed to read BUCK_CTRL_TRIM3 rc=%d\n", rc);
break;
}
}
/* restore IBATMAX */
rc = qpnp_chg_ibatmax_set(chip, ibat_max_ma);
if (rc)
pr_err("failed to restore ibatmax rc=%d\n", rc);
return rc;
}
#define BOOST_MIN_UV 4200000
#define BOOST_MAX_UV 5500000
#define BOOST_STEP_UV 50000
#define BOOST_MIN 16
#define N_BOOST_V ((BOOST_MAX_UV - BOOST_MIN_UV) / BOOST_STEP_UV + 1)
static int
qpnp_boost_vset(struct qpnp_chg_chip *chip, int voltage)
{
u8 reg = 0;
if (voltage < BOOST_MIN_UV || voltage > BOOST_MAX_UV) {
pr_err("invalid voltage requested %d uV\n", voltage);
return -EINVAL;
}
reg = DIV_ROUND_UP(voltage - BOOST_MIN_UV, BOOST_STEP_UV) + BOOST_MIN;
pr_debug("voltage=%d setting %02x\n", voltage, reg);
return qpnp_chg_write(chip, &reg, chip->boost_base + BOOST_VSET, 1);
}
static int
qpnp_boost_vget_uv(struct qpnp_chg_chip *chip)
{
int rc;
u8 boost_reg;
rc = qpnp_chg_read(chip, &boost_reg,
chip->boost_base + BOOST_VSET, 1);
if (rc) {
pr_err("failed to read BOOST_VSET rc=%d\n", rc);
return rc;
}
if (boost_reg < BOOST_MIN) {
pr_err("Invalid reading from 0x%x\n", boost_reg);
return -EINVAL;
}
return BOOST_MIN_UV + ((boost_reg - BOOST_MIN) * BOOST_STEP_UV);
}
static void
qpnp_chg_set_appropriate_battery_current(struct qpnp_chg_chip *chip)
{
unsigned int chg_current = chip->max_bat_chg_current;
if (chip->bat_is_cool)
chg_current = min(chg_current, chip->cool_bat_chg_ma);
if (chip->bat_is_warm)
chg_current = min(chg_current, chip->warm_bat_chg_ma);
if (chip->therm_lvl_sel != 0 && chip->thermal_mitigation)
chg_current = min(chg_current,
chip->thermal_mitigation[chip->therm_lvl_sel]);
pr_debug("setting %d mA\n", chg_current);
qpnp_chg_ibatmax_set(chip, chg_current);
}
static void
qpnp_batt_system_temp_level_set(struct qpnp_chg_chip *chip, int lvl_sel)
{
if (lvl_sel >= 0 && lvl_sel < chip->thermal_levels) {
chip->therm_lvl_sel = lvl_sel;
if (lvl_sel == (chip->thermal_levels - 1)) {
/* disable charging if highest value selected */
qpnp_chg_buck_control(chip, 0);
} else {
qpnp_chg_buck_control(chip, 1);
qpnp_chg_set_appropriate_battery_current(chip);
}
} else {
pr_err("Unsupported level selected %d\n", lvl_sel);
}
}
/* OTG regulator operations */
static int
qpnp_chg_regulator_otg_enable(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
return switch_usb_to_host_mode(chip);
}
static int
qpnp_chg_regulator_otg_disable(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
return switch_usb_to_charge_mode(chip);
}
static int
qpnp_chg_regulator_otg_is_enabled(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
return qpnp_chg_is_otg_en_set(chip);
}
static int
qpnp_chg_regulator_boost_enable(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
int rc;
if (qpnp_chg_is_usb_chg_plugged_in(chip) &&
(chip->flags & BOOST_FLASH_WA)) {
qpnp_chg_usb_suspend_enable(chip, 1);
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + SEC_ACCESS,
0xFF,
0xA5, 1);
if (rc) {
pr_err("failed to write SEC_ACCESS rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + COMP_OVR1,
0xFF,
0x2F, 1);
if (rc) {
pr_err("failed to write COMP_OVR1 rc=%d\n", rc);
return rc;
}
}
return qpnp_chg_masked_write(chip,
chip->boost_base + BOOST_ENABLE_CONTROL,
BOOST_PWR_EN,
BOOST_PWR_EN, 1);
}
/* Boost regulator operations */
#define ABOVE_VBAT_WEAK BIT(1)
static int
qpnp_chg_regulator_boost_disable(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
int rc;
u8 vbat_sts;
rc = qpnp_chg_masked_write(chip,
chip->boost_base + BOOST_ENABLE_CONTROL,
BOOST_PWR_EN,
0, 1);
if (rc) {
pr_err("failed to disable boost rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_read(chip, &vbat_sts,
chip->chgr_base + CHGR_VBAT_STATUS, 1);
if (rc) {
pr_err("failed to read bat sts rc=%d\n", rc);
return rc;
}
if (!(vbat_sts & ABOVE_VBAT_WEAK) && (chip->flags & BOOST_FLASH_WA)) {
rc = qpnp_chg_masked_write(chip,
chip->chgr_base + SEC_ACCESS,
0xFF,
0xA5, 1);
if (rc) {
pr_err("failed to write SEC_ACCESS rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip,
chip->chgr_base + COMP_OVR1,
0xFF,
0x20, 1);
if (rc) {
pr_err("failed to write COMP_OVR1 rc=%d\n", rc);
return rc;
}
usleep(2000);
rc = qpnp_chg_masked_write(chip,
chip->chgr_base + SEC_ACCESS,
0xFF,
0xA5, 1);
if (rc) {
pr_err("failed to write SEC_ACCESS rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip,
chip->chgr_base + COMP_OVR1,
0xFF,
0x00, 1);
if (rc) {
pr_err("failed to write COMP_OVR1 rc=%d\n", rc);
return rc;
}
}
if (qpnp_chg_is_usb_chg_plugged_in(chip)
&& (chip->flags & BOOST_FLASH_WA)) {
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + SEC_ACCESS,
0xFF,
0xA5, 1);
if (rc) {
pr_err("failed to write SEC_ACCESS rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + COMP_OVR1,
0xFF,
0x00, 1);
if (rc) {
pr_err("failed to write COMP_OVR1 rc=%d\n", rc);
return rc;
}
usleep(1000);
qpnp_chg_usb_suspend_enable(chip, 0);
}
return rc;
}
static int
qpnp_chg_regulator_boost_is_enabled(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
return qpnp_chg_is_boost_en_set(chip);
}
static int
qpnp_chg_regulator_boost_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV, unsigned *selector)
{
int uV = min_uV;
int rc;
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
if (uV < BOOST_MIN_UV && max_uV >= BOOST_MIN_UV)
uV = BOOST_MIN_UV;
if (uV < BOOST_MIN_UV || uV > BOOST_MAX_UV) {
pr_err("request %d uV is out of bounds\n", uV);
return -EINVAL;
}
*selector = DIV_ROUND_UP(uV - BOOST_MIN_UV, BOOST_STEP_UV);
if ((*selector * BOOST_STEP_UV + BOOST_MIN_UV) > max_uV) {
pr_err("no available setpoint [%d, %d] uV\n", min_uV, max_uV);
return -EINVAL;
}
rc = qpnp_boost_vset(chip, uV);
return rc;
}
static int
qpnp_chg_regulator_boost_get_voltage(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
return qpnp_boost_vget_uv(chip);
}
static int
qpnp_chg_regulator_boost_list_voltage(struct regulator_dev *rdev,
unsigned selector)
{
if (selector >= N_BOOST_V)
return 0;
return BOOST_MIN_UV + (selector * BOOST_STEP_UV);
}
static struct regulator_ops qpnp_chg_otg_reg_ops = {
.enable = qpnp_chg_regulator_otg_enable,
.disable = qpnp_chg_regulator_otg_disable,
.is_enabled = qpnp_chg_regulator_otg_is_enabled,
};
static struct regulator_ops qpnp_chg_boost_reg_ops = {
.enable = qpnp_chg_regulator_boost_enable,
.disable = qpnp_chg_regulator_boost_disable,
.is_enabled = qpnp_chg_regulator_boost_is_enabled,
.set_voltage = qpnp_chg_regulator_boost_set_voltage,
.get_voltage = qpnp_chg_regulator_boost_get_voltage,
.list_voltage = qpnp_chg_regulator_boost_list_voltage,
};
static int
qpnp_chg_bat_if_batfet_reg_enabled(struct qpnp_chg_chip *chip)
{
int rc = 0;
u8 reg = 0;
if (!chip->bat_if_base)
return rc;
if (chip->type == SMBB)
rc = qpnp_chg_read(chip, &reg,
chip->bat_if_base + CHGR_BAT_IF_SPARE, 1);
else
rc = qpnp_chg_read(chip, &reg,
chip->bat_if_base + CHGR_BAT_IF_BATFET_CTRL4, 1);
if (rc) {
pr_err("failed to read batt_if rc=%d\n", rc);
return rc;
}
if ((reg & BATFET_LPM_MASK) == BATFET_NO_LPM)
return 1;
return 0;
}
static int
qpnp_chg_regulator_batfet_enable(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
int rc = 0;
mutex_lock(&chip->batfet_vreg_lock);
/* Only enable if not already enabled */
if (!qpnp_chg_bat_if_batfet_reg_enabled(chip)) {
rc = qpnp_chg_regulator_batfet_set(chip, 1);
if (rc)
pr_err("failed to write to batt_if rc=%d\n", rc);
}
chip->batfet_ext_en = true;
mutex_unlock(&chip->batfet_vreg_lock);
return rc;
}
static int
qpnp_chg_regulator_batfet_disable(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
int rc = 0;
mutex_lock(&chip->batfet_vreg_lock);
/* Don't allow disable if charger connected */
if (!qpnp_chg_is_usb_chg_plugged_in(chip) &&
!qpnp_chg_is_dc_chg_plugged_in(chip)) {
rc = qpnp_chg_regulator_batfet_set(chip, 0);
if (rc)
pr_err("failed to write to batt_if rc=%d\n", rc);
}
chip->batfet_ext_en = false;
mutex_unlock(&chip->batfet_vreg_lock);
return rc;
}
static int
qpnp_chg_regulator_batfet_is_enabled(struct regulator_dev *rdev)
{
struct qpnp_chg_chip *chip = rdev_get_drvdata(rdev);
return chip->batfet_ext_en;
}
static struct regulator_ops qpnp_chg_batfet_vreg_ops = {
.enable = qpnp_chg_regulator_batfet_enable,
.disable = qpnp_chg_regulator_batfet_disable,
.is_enabled = qpnp_chg_regulator_batfet_is_enabled,
};
#define MIN_DELTA_MV_TO_INCREASE_VDD_MAX 8
#define MAX_DELTA_VDD_MAX_MV 80
#define VDD_MAX_CENTER_OFFSET 4
static void
qpnp_chg_adjust_vddmax(struct qpnp_chg_chip *chip, int vbat_mv)
{
int delta_mv, closest_delta_mv, sign;
delta_mv = chip->max_voltage_mv - VDD_MAX_CENTER_OFFSET - vbat_mv;
if (delta_mv > 0 && delta_mv < MIN_DELTA_MV_TO_INCREASE_VDD_MAX) {
pr_debug("vbat is not low enough to increase vdd\n");
return;
}
sign = delta_mv > 0 ? 1 : -1;
closest_delta_mv = ((delta_mv + sign * QPNP_CHG_BUCK_TRIM1_STEP / 2)
/ QPNP_CHG_BUCK_TRIM1_STEP) * QPNP_CHG_BUCK_TRIM1_STEP;
pr_debug("max_voltage = %d, vbat_mv = %d, delta_mv = %d, closest = %d\n",
chip->max_voltage_mv, vbat_mv,
delta_mv, closest_delta_mv);
chip->delta_vddmax_mv = clamp(chip->delta_vddmax_mv + closest_delta_mv,
-MAX_DELTA_VDD_MAX_MV, MAX_DELTA_VDD_MAX_MV);
pr_debug("using delta_vddmax_mv = %d\n", chip->delta_vddmax_mv);
qpnp_chg_set_appropriate_vddmax(chip);
}
#define CONSECUTIVE_COUNT 3
#define VBATDET_MAX_ERR_MV 50
static void
qpnp_eoc_work(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct qpnp_chg_chip *chip = container_of(dwork,
struct qpnp_chg_chip, eoc_work);
static int count;
static int vbat_low_count;
int ibat_ma, vbat_mv, rc = 0;
u8 batt_sts = 0, buck_sts = 0, chg_sts = 0;
bool vbat_lower_than_vbatdet;
pm_stay_awake(chip->dev);
qpnp_chg_charge_en(chip, !chip->charging_disabled);
rc = qpnp_chg_read(chip, &batt_sts, INT_RT_STS(chip->bat_if_base), 1);
if (rc) {
pr_err("failed to read batt_if rc=%d\n", rc);
return;
}
rc = qpnp_chg_read(chip, &buck_sts, INT_RT_STS(chip->buck_base), 1);
if (rc) {
pr_err("failed to read buck rc=%d\n", rc);
return;
}
rc = qpnp_chg_read(chip, &chg_sts, INT_RT_STS(chip->chgr_base), 1);
if (rc) {
pr_err("failed to read chg_sts rc=%d\n", rc);
return;
}
pr_debug("chgr: 0x%x, bat_if: 0x%x, buck: 0x%x\n",
chg_sts, batt_sts, buck_sts);
if (!qpnp_chg_is_usb_chg_plugged_in(chip) &&
!qpnp_chg_is_dc_chg_plugged_in(chip)) {
pr_debug("no chg connected, stopping\n");
goto stop_eoc;
}
if ((batt_sts & BAT_FET_ON_IRQ) && (chg_sts & FAST_CHG_ON_IRQ
|| chg_sts & TRKL_CHG_ON_IRQ)) {
ibat_ma = get_prop_current_now(chip) / 1000;
vbat_mv = get_prop_battery_voltage_now(chip) / 1000;
pr_debug("ibat_ma = %d vbat_mv = %d term_current_ma = %d\n",
ibat_ma, vbat_mv, chip->term_current);
vbat_lower_than_vbatdet = !(chg_sts & VBAT_DET_LOW_IRQ);
if (vbat_lower_than_vbatdet && vbat_mv <
(chip->max_voltage_mv - chip->resume_delta_mv
- VBATDET_MAX_ERR_MV)) {
vbat_low_count++;
pr_debug("woke up too early vbat_mv = %d, max_mv = %d, resume_mv = %d tolerance_mv = %d low_count = %d\n",
vbat_mv, chip->max_voltage_mv,
chip->resume_delta_mv,
VBATDET_MAX_ERR_MV, vbat_low_count);
if (vbat_low_count >= CONSECUTIVE_COUNT) {
pr_debug("woke up too early stopping\n");
qpnp_chg_enable_irq(&chip->chg_vbatdet_lo);
goto stop_eoc;
} else {
goto check_again_later;
}
} else {
vbat_low_count = 0;
}
if (buck_sts & VDD_LOOP_IRQ)
qpnp_chg_adjust_vddmax(chip, vbat_mv);
if (!(buck_sts & VDD_LOOP_IRQ)) {
pr_debug("Not in CV\n");
count = 0;
} else if ((ibat_ma * -1) > chip->term_current) {
pr_debug("Not at EOC, battery current too high\n");
count = 0;
} else if (ibat_ma > 0) {
pr_debug("Charging but system demand increased\n");
count = 0;
} else {
if (count == CONSECUTIVE_COUNT) {
if (!chip->bat_is_cool && !chip->bat_is_warm) {
pr_info("End of Charging\n");
chip->chg_done = true;
} else {
pr_info("stop charging: battery is %s, vddmax = %d reached\n",
chip->bat_is_cool
? "cool" : "warm",
qpnp_chg_vddmax_get(chip));
}
chip->delta_vddmax_mv = 0;
qpnp_chg_set_appropriate_vddmax(chip);
qpnp_chg_charge_en(chip, 0);
/* sleep for a second before enabling */
msleep(2000);
qpnp_chg_charge_en(chip,
!chip->charging_disabled);
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
qpnp_chg_enable_irq(&chip->chg_vbatdet_lo);
goto stop_eoc;
} else {
count += 1;
pr_debug("EOC count = %d\n", count);
}
}
} else {
pr_debug("not charging\n");
goto stop_eoc;
}
check_again_later:
schedule_delayed_work(&chip->eoc_work,
msecs_to_jiffies(EOC_CHECK_PERIOD_MS));
return;
stop_eoc:
vbat_low_count = 0;
count = 0;
pm_relax(chip->dev);
}
static void
qpnp_chg_insertion_ocv_work(struct work_struct *work)
{
struct qpnp_chg_chip *chip = container_of(work,
struct qpnp_chg_chip, insertion_ocv_work);
u8 bat_if_sts = 0, charge_en = 0;
int rc;
chip->insertion_ocv_uv = get_prop_battery_voltage_now(chip);
rc = qpnp_chg_read(chip, &bat_if_sts, INT_RT_STS(chip->bat_if_base), 1);
if (rc)
pr_err("failed to read bat_if sts %d\n", rc);
rc = qpnp_chg_read(chip, &charge_en,
chip->chgr_base + CHGR_CHG_CTRL, 1);
if (rc)
pr_err("failed to read bat_if sts %d\n", rc);
pr_debug("batfet sts = %02x, charge_en = %02x ocv = %d\n",
bat_if_sts, charge_en, chip->insertion_ocv_uv);
qpnp_chg_charge_en(chip, !chip->charging_disabled);
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
}
static void
qpnp_chg_soc_check_work(struct work_struct *work)
{
struct qpnp_chg_chip *chip = container_of(work,
struct qpnp_chg_chip, soc_check_work);
get_prop_capacity(chip);
}
#define HYSTERISIS_DECIDEGC 20
static void
qpnp_chg_adc_notification(enum qpnp_tm_state state, void *ctx)
{
struct qpnp_chg_chip *chip = ctx;
bool bat_warm = 0, bat_cool = 0;
int temp;
if (state >= ADC_TM_STATE_NUM) {
pr_err("invalid notification %d\n", state);
return;
}
temp = get_prop_batt_temp(chip);
pr_debug("temp = %d state = %s\n", temp,
state == ADC_TM_WARM_STATE ? "warm" : "cool");
if (state == ADC_TM_WARM_STATE) {
if (temp > chip->warm_bat_decidegc) {
/* Normal to warm */
bat_warm = true;
bat_cool = false;
chip->adc_param.low_temp =
chip->warm_bat_decidegc - HYSTERISIS_DECIDEGC;
chip->adc_param.state_request =
ADC_TM_COOL_THR_ENABLE;
} else if (temp >
chip->cool_bat_decidegc + HYSTERISIS_DECIDEGC){
/* Cool to normal */
bat_warm = false;
bat_cool = false;
chip->adc_param.low_temp = chip->cool_bat_decidegc;
chip->adc_param.high_temp = chip->warm_bat_decidegc;
chip->adc_param.state_request =
ADC_TM_HIGH_LOW_THR_ENABLE;
}
} else {
if (temp < chip->cool_bat_decidegc) {
/* Normal to cool */
bat_warm = false;
bat_cool = true;
chip->adc_param.high_temp =
chip->cool_bat_decidegc + HYSTERISIS_DECIDEGC;
chip->adc_param.state_request =
ADC_TM_WARM_THR_ENABLE;
} else if (temp <
chip->warm_bat_decidegc - HYSTERISIS_DECIDEGC){
/* Warm to normal */
bat_warm = false;
bat_cool = false;
chip->adc_param.low_temp = chip->cool_bat_decidegc;
chip->adc_param.high_temp = chip->warm_bat_decidegc;
chip->adc_param.state_request =
ADC_TM_HIGH_LOW_THR_ENABLE;
}
}
if (chip->bat_is_cool ^ bat_cool || chip->bat_is_warm ^ bat_warm) {
chip->bat_is_cool = bat_cool;
chip->bat_is_warm = bat_warm;
if (bat_cool || bat_warm)
chip->resuming_charging = false;
/**
* set appropriate voltages and currents.
*
* Note that when the battery is hot or cold, the charger
* driver will not resume with SoC. Only vbatdet is used to
* determine resume of charging.
*/
qpnp_chg_set_appropriate_vddmax(chip);
qpnp_chg_set_appropriate_battery_current(chip);
qpnp_chg_set_appropriate_vbatdet(chip);
}
pr_debug("warm %d, cool %d, low = %d deciDegC, high = %d deciDegC\n",
chip->bat_is_warm, chip->bat_is_cool,
chip->adc_param.low_temp, chip->adc_param.high_temp);
if (qpnp_adc_tm_channel_measure(chip->adc_tm_dev, &chip->adc_param))
pr_err("request ADC error\n");
}
#define MIN_COOL_TEMP -300
#define MAX_WARM_TEMP 1000
static int
qpnp_chg_configure_jeita(struct qpnp_chg_chip *chip,
enum power_supply_property psp, int temp_degc)
{
int rc = 0;
if ((temp_degc < MIN_COOL_TEMP) || (temp_degc > MAX_WARM_TEMP)) {
pr_err("Bad temperature request %d\n", temp_degc);
return -EINVAL;
}
mutex_lock(&chip->jeita_configure_lock);
switch (psp) {
case POWER_SUPPLY_PROP_COOL_TEMP:
if (temp_degc >=
(chip->warm_bat_decidegc - HYSTERISIS_DECIDEGC)) {
pr_err("Can't set cool %d higher than warm %d - hysterisis %d\n",
temp_degc, chip->warm_bat_decidegc,
HYSTERISIS_DECIDEGC);
rc = -EINVAL;
goto mutex_unlock;
}
if (chip->bat_is_cool)
chip->adc_param.high_temp =
temp_degc + HYSTERISIS_DECIDEGC;
else if (!chip->bat_is_warm)
chip->adc_param.low_temp = temp_degc;
chip->cool_bat_decidegc = temp_degc;
break;
case POWER_SUPPLY_PROP_WARM_TEMP:
if (temp_degc <=
(chip->cool_bat_decidegc + HYSTERISIS_DECIDEGC)) {
pr_err("Can't set warm %d higher than cool %d + hysterisis %d\n",
temp_degc, chip->warm_bat_decidegc,
HYSTERISIS_DECIDEGC);
rc = -EINVAL;
goto mutex_unlock;
}
if (chip->bat_is_warm)
chip->adc_param.low_temp =
temp_degc - HYSTERISIS_DECIDEGC;
else if (!chip->bat_is_cool)
chip->adc_param.high_temp = temp_degc;
chip->warm_bat_decidegc = temp_degc;
break;
default:
rc = -EINVAL;
goto mutex_unlock;
}
schedule_work(&chip->adc_measure_work);
mutex_unlock:
mutex_unlock(&chip->jeita_configure_lock);
return rc;
}
#define POWER_STAGE_REDUCE_CHECK_PERIOD_SECONDS 20
#define POWER_STAGE_REDUCE_MAX_VBAT_UV 3900000
#define POWER_STAGE_REDUCE_MIN_VCHG_UV 4800000
#define POWER_STAGE_SEL_MASK 0x0F
#define POWER_STAGE_REDUCED 0x01
#define POWER_STAGE_DEFAULT 0x0F
static bool
qpnp_chg_is_power_stage_reduced(struct qpnp_chg_chip *chip)
{
int rc;
u8 reg;
rc = qpnp_chg_read(chip, &reg,
chip->buck_base + CHGR_BUCK_PSTG_CTRL,
1);
if (rc) {
pr_err("Error %d reading power stage register\n", rc);
return false;
}
if ((reg & POWER_STAGE_SEL_MASK) == POWER_STAGE_DEFAULT)
return false;
return true;
}
static int
qpnp_chg_power_stage_set(struct qpnp_chg_chip *chip, bool reduce)
{
int rc;
u8 reg = 0xA5;
rc = qpnp_chg_write(chip, &reg,
chip->buck_base + SEC_ACCESS,
1);
if (rc) {
pr_err("Error %d writing 0xA5 to buck's 0x%x reg\n",
rc, SEC_ACCESS);
return rc;
}
reg = POWER_STAGE_DEFAULT;
if (reduce)
reg = POWER_STAGE_REDUCED;
rc = qpnp_chg_write(chip, &reg,
chip->buck_base + CHGR_BUCK_PSTG_CTRL,
1);
if (rc)
pr_err("Error %d writing 0x%x power stage register\n", rc, reg);
return rc;
}
static int
qpnp_chg_get_vusbin_uv(struct qpnp_chg_chip *chip)
{
int rc = 0;
struct qpnp_vadc_result results;
rc = qpnp_vadc_read(chip->vadc_dev, USBIN, &results);
if (rc) {
pr_err("Unable to read vbat rc=%d\n", rc);
return 0;
}
return results.physical;
}
static
int get_vusb_averaged(struct qpnp_chg_chip *chip, int sample_count)
{
int vusb_uv = 0;
int i;
/* avoid overflows */
if (sample_count > 256)
sample_count = 256;
for (i = 0; i < sample_count; i++)
vusb_uv += qpnp_chg_get_vusbin_uv(chip);
vusb_uv = vusb_uv / sample_count;
return vusb_uv;
}
static
int get_vbat_averaged(struct qpnp_chg_chip *chip, int sample_count)
{
int vbat_uv = 0;
int i;
/* avoid overflows */
if (sample_count > 256)
sample_count = 256;
for (i = 0; i < sample_count; i++)
vbat_uv += get_prop_battery_voltage_now(chip);
vbat_uv = vbat_uv / sample_count;
return vbat_uv;
}
static void
qpnp_chg_reduce_power_stage(struct qpnp_chg_chip *chip)
{
struct timespec ts;
bool power_stage_reduced_in_hw = qpnp_chg_is_power_stage_reduced(chip);
bool reduce_power_stage = false;
int vbat_uv = get_vbat_averaged(chip, 16);
int vusb_uv = get_vusb_averaged(chip, 16);
bool fast_chg =
(get_prop_charge_type(chip) == POWER_SUPPLY_CHARGE_TYPE_FAST);
static int count_restore_power_stage;
static int count_reduce_power_stage;
bool vchg_loop = get_prop_vchg_loop(chip);
bool ichg_loop = qpnp_chg_is_ichg_loop_active(chip);
bool usb_present = qpnp_chg_is_usb_chg_plugged_in(chip);
bool usb_ma_above_wall =
(qpnp_chg_usb_iusbmax_get(chip) > USB_WALL_THRESHOLD_MA);
if (fast_chg
&& usb_present
&& usb_ma_above_wall
&& vbat_uv < POWER_STAGE_REDUCE_MAX_VBAT_UV
&& vusb_uv > POWER_STAGE_REDUCE_MIN_VCHG_UV)
reduce_power_stage = true;
if ((usb_present && usb_ma_above_wall)
&& (vchg_loop || ichg_loop))
reduce_power_stage = true;
if (power_stage_reduced_in_hw && !reduce_power_stage) {
count_restore_power_stage++;
count_reduce_power_stage = 0;
} else if (!power_stage_reduced_in_hw && reduce_power_stage) {
count_reduce_power_stage++;
count_restore_power_stage = 0;
} else if (power_stage_reduced_in_hw == reduce_power_stage) {
count_restore_power_stage = 0;
count_reduce_power_stage = 0;
}
pr_debug("power_stage_hw = %d reduce_power_stage = %d usb_present = %d usb_ma_above_wall = %d vbat_uv(16) = %d vusb_uv(16) = %d fast_chg = %d , ichg = %d, vchg = %d, restore,reduce = %d, %d\n",
power_stage_reduced_in_hw, reduce_power_stage,
usb_present, usb_ma_above_wall,
vbat_uv, vusb_uv, fast_chg,
ichg_loop, vchg_loop,
count_restore_power_stage, count_reduce_power_stage);
if (!power_stage_reduced_in_hw && reduce_power_stage) {
if (count_reduce_power_stage >= 2) {
qpnp_chg_power_stage_set(chip, true);
power_stage_reduced_in_hw = true;
}
}
if (power_stage_reduced_in_hw && !reduce_power_stage) {
if (count_restore_power_stage >= 6
|| (!usb_present || !usb_ma_above_wall)) {
qpnp_chg_power_stage_set(chip, false);
power_stage_reduced_in_hw = false;
}
}
if (usb_present && usb_ma_above_wall) {
getnstimeofday(&ts);
ts.tv_sec += POWER_STAGE_REDUCE_CHECK_PERIOD_SECONDS;
alarm_start_range(&chip->reduce_power_stage_alarm,
timespec_to_ktime(ts),
timespec_to_ktime(ts));
} else {
pr_debug("stopping power stage workaround\n");
chip->power_stage_workaround_running = false;
}
}
static void
qpnp_chg_batfet_lcl_work(struct work_struct *work)
{
struct qpnp_chg_chip *chip = container_of(work,
struct qpnp_chg_chip, batfet_lcl_work);
mutex_lock(&chip->batfet_vreg_lock);
if (qpnp_chg_is_usb_chg_plugged_in(chip) ||
qpnp_chg_is_dc_chg_plugged_in(chip)) {
qpnp_chg_regulator_batfet_set(chip, 1);
pr_debug("disabled ULPM\n");
} else if (!chip->batfet_ext_en && !qpnp_chg_is_usb_chg_plugged_in(chip)
&& !qpnp_chg_is_dc_chg_plugged_in(chip)) {
qpnp_chg_regulator_batfet_set(chip, 0);
pr_debug("enabled ULPM\n");
}
mutex_unlock(&chip->batfet_vreg_lock);
}
static void
qpnp_chg_reduce_power_stage_work(struct work_struct *work)
{
struct qpnp_chg_chip *chip = container_of(work,
struct qpnp_chg_chip, reduce_power_stage_work);
qpnp_chg_reduce_power_stage(chip);
}
static void
qpnp_chg_reduce_power_stage_callback(struct alarm *alarm)
{
struct qpnp_chg_chip *chip = container_of(alarm, struct qpnp_chg_chip,
reduce_power_stage_alarm);
schedule_work(&chip->reduce_power_stage_work);
}
static int
qpnp_dc_power_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct qpnp_chg_chip *chip = container_of(psy, struct qpnp_chg_chip,
dc_psy);
int rc = 0;
switch (psp) {
case POWER_SUPPLY_PROP_CURRENT_MAX:
if (!val->intval)
break;
rc = qpnp_chg_idcmax_set(chip, val->intval / 1000);
if (rc) {
pr_err("Error setting idcmax property %d\n", rc);
return rc;
}
chip->maxinput_dc_ma = (val->intval / 1000);
break;
default:
return -EINVAL;
}
pr_debug("psy changed dc_psy\n");
power_supply_changed(&chip->dc_psy);
return rc;
}
static int
qpnp_batt_power_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct qpnp_chg_chip *chip = container_of(psy, struct qpnp_chg_chip,
batt_psy);
int rc = 0;
switch (psp) {
case POWER_SUPPLY_PROP_COOL_TEMP:
rc = qpnp_chg_configure_jeita(chip, psp, val->intval);
break;
case POWER_SUPPLY_PROP_WARM_TEMP:
rc = qpnp_chg_configure_jeita(chip, psp, val->intval);
break;
case POWER_SUPPLY_PROP_CAPACITY:
chip->fake_battery_soc = val->intval;
power_supply_changed(&chip->batt_psy);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
chip->charging_disabled = !(val->intval);
if (chip->charging_disabled) {
/* disable charging */
qpnp_chg_charge_en(chip, !chip->charging_disabled);
qpnp_chg_force_run_on_batt(chip,
chip->charging_disabled);
} else {
/* enable charging */
qpnp_chg_force_run_on_batt(chip,
chip->charging_disabled);
qpnp_chg_charge_en(chip, !chip->charging_disabled);
}
break;
case POWER_SUPPLY_PROP_SYSTEM_TEMP_LEVEL:
qpnp_batt_system_temp_level_set(chip, val->intval);
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_MAX:
qpnp_chg_iusbmax_set(chip, val->intval / 1000);
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_TRIM:
qpnp_chg_iusb_trim_set(chip, val->intval);
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_SETTLED:
qpnp_chg_input_current_settled(chip);
break;
case POWER_SUPPLY_PROP_VOLTAGE_MIN:
qpnp_chg_vinmin_set(chip, val->intval / 1000);
break;
default:
return -EINVAL;
}
pr_debug("psy changed batt_psy\n");
power_supply_changed(&chip->batt_psy);
return rc;
}
static int
qpnp_chg_setup_flags(struct qpnp_chg_chip *chip)
{
if (chip->revision > 0 && chip->type == SMBB)
chip->flags |= CHG_FLAGS_VCP_WA;
if (chip->type == SMBB)
chip->flags |= BOOST_FLASH_WA;
if (chip->type == SMBBP) {
struct device_node *revid_dev_node;
struct pmic_revid_data *revid_data;
chip->flags |= BOOST_FLASH_WA;
revid_dev_node = of_parse_phandle(chip->spmi->dev.of_node,
"qcom,pmic-revid", 0);
if (!revid_dev_node) {
pr_err("Missing qcom,pmic-revid property\n");
return -EINVAL;
}
revid_data = get_revid_data(revid_dev_node);
if (IS_ERR(revid_data)) {
pr_err("Couldnt get revid data rc = %ld\n",
PTR_ERR(revid_data));
return PTR_ERR(revid_data);
}
if (revid_data->rev4 < PM8226_V2P1_REV4
|| ((revid_data->rev4 == PM8226_V2P1_REV4)
&& (revid_data->rev3 <= PM8226_V2P1_REV3))) {
chip->flags |= POWER_STAGE_WA;
}
}
return 0;
}
static int
qpnp_chg_request_irqs(struct qpnp_chg_chip *chip)
{
int rc = 0;
struct resource *resource;
struct spmi_resource *spmi_resource;
u8 subtype;
struct spmi_device *spmi = chip->spmi;
spmi_for_each_container_dev(spmi_resource, chip->spmi) {
if (!spmi_resource) {
pr_err("qpnp_chg: spmi resource absent\n");
return rc;
}
resource = spmi_get_resource(spmi, spmi_resource,
IORESOURCE_MEM, 0);
if (!(resource && resource->start)) {
pr_err("node %s IO resource absent!\n",
spmi->dev.of_node->full_name);
return rc;
}
rc = qpnp_chg_read(chip, &subtype,
resource->start + REG_OFFSET_PERP_SUBTYPE, 1);
if (rc) {
pr_err("Peripheral subtype read failed rc=%d\n", rc);
return rc;
}
switch (subtype) {
case SMBB_CHGR_SUBTYPE:
case SMBBP_CHGR_SUBTYPE:
case SMBCL_CHGR_SUBTYPE:
chip->chg_fastchg.irq = spmi_get_irq_byname(spmi,
spmi_resource, "fast-chg-on");
if (chip->chg_fastchg.irq < 0) {
pr_err("Unable to get fast-chg-on irq\n");
return rc;
}
chip->chg_trklchg.irq = spmi_get_irq_byname(spmi,
spmi_resource, "trkl-chg-on");
if (chip->chg_trklchg.irq < 0) {
pr_err("Unable to get trkl-chg-on irq\n");
return rc;
}
chip->chg_failed.irq = spmi_get_irq_byname(spmi,
spmi_resource, "chg-failed");
if (chip->chg_failed.irq < 0) {
pr_err("Unable to get chg_failed irq\n");
return rc;
}
chip->chg_vbatdet_lo.irq = spmi_get_irq_byname(spmi,
spmi_resource, "vbat-det-lo");
if (chip->chg_vbatdet_lo.irq < 0) {
pr_err("Unable to get fast-chg-on irq\n");
return rc;
}
rc |= devm_request_irq(chip->dev, chip->chg_failed.irq,
qpnp_chg_chgr_chg_failed_irq_handler,
IRQF_TRIGGER_RISING, "chg-failed", chip);
if (rc < 0) {
pr_err("Can't request %d chg-failed: %d\n",
chip->chg_failed.irq, rc);
return rc;
}
rc |= devm_request_irq(chip->dev, chip->chg_fastchg.irq,
qpnp_chg_chgr_chg_fastchg_irq_handler,
IRQF_TRIGGER_RISING,
"fast-chg-on", chip);
if (rc < 0) {
pr_err("Can't request %d fast-chg-on: %d\n",
chip->chg_fastchg.irq, rc);
return rc;
}
rc |= devm_request_irq(chip->dev, chip->chg_trklchg.irq,
qpnp_chg_chgr_chg_trklchg_irq_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"trkl-chg-on", chip);
if (rc < 0) {
pr_err("Can't request %d trkl-chg-on: %d\n",
chip->chg_trklchg.irq, rc);
return rc;
}
rc |= devm_request_irq(chip->dev,
chip->chg_vbatdet_lo.irq,
qpnp_chg_vbatdet_lo_irq_handler,
IRQF_TRIGGER_RISING,
"vbat-det-lo", chip);
if (rc < 0) {
pr_err("Can't request %d vbat-det-lo: %d\n",
chip->chg_vbatdet_lo.irq, rc);
return rc;
}
enable_irq_wake(chip->chg_trklchg.irq);
enable_irq_wake(chip->chg_failed.irq);
qpnp_chg_disable_irq(&chip->chg_vbatdet_lo);
enable_irq_wake(chip->chg_vbatdet_lo.irq);
break;
case SMBB_BAT_IF_SUBTYPE:
case SMBBP_BAT_IF_SUBTYPE:
case SMBCL_BAT_IF_SUBTYPE:
chip->batt_pres.irq = spmi_get_irq_byname(spmi,
spmi_resource, "batt-pres");
if (chip->batt_pres.irq < 0) {
pr_err("Unable to get batt-pres irq\n");
return rc;
}
rc = devm_request_irq(chip->dev, chip->batt_pres.irq,
qpnp_chg_bat_if_batt_pres_irq_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING
| IRQF_SHARED | IRQF_ONESHOT,
"batt-pres", chip);
if (rc < 0) {
pr_err("Can't request %d batt-pres irq: %d\n",
chip->batt_pres.irq, rc);
return rc;
}
enable_irq_wake(chip->batt_pres.irq);
chip->batt_temp_ok.irq = spmi_get_irq_byname(spmi,
spmi_resource, "bat-temp-ok");
if (chip->batt_temp_ok.irq < 0) {
pr_err("Unable to get bat-temp-ok irq\n");
return rc;
}
rc = devm_request_irq(chip->dev, chip->batt_temp_ok.irq,
qpnp_chg_bat_if_batt_temp_irq_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"bat-temp-ok", chip);
if (rc < 0) {
pr_err("Can't request %d bat-temp-ok irq: %d\n",
chip->batt_temp_ok.irq, rc);
return rc;
}
enable_irq_wake(chip->batt_temp_ok.irq);
break;
case SMBB_BUCK_SUBTYPE:
case SMBBP_BUCK_SUBTYPE:
case SMBCL_BUCK_SUBTYPE:
break;
case SMBB_USB_CHGPTH_SUBTYPE:
case SMBBP_USB_CHGPTH_SUBTYPE:
case SMBCL_USB_CHGPTH_SUBTYPE:
if (chip->ovp_monitor_enable) {
chip->coarse_det_usb.irq =
spmi_get_irq_byname(spmi,
spmi_resource, "coarse-det-usb");
if (chip->coarse_det_usb.irq < 0) {
pr_err("Can't get coarse-det irq\n");
return rc;
}
rc = devm_request_irq(chip->dev,
chip->coarse_det_usb.irq,
qpnp_chg_coarse_det_usb_irq_handler,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING,
"coarse-det-usb", chip);
if (rc < 0) {
pr_err("Can't req %d coarse-det: %d\n",
chip->coarse_det_usb.irq, rc);
return rc;
}
}
chip->usbin_valid.irq = spmi_get_irq_byname(spmi,
spmi_resource, "usbin-valid");
if (chip->usbin_valid.irq < 0) {
pr_err("Unable to get usbin irq\n");
return rc;
}
rc = devm_request_irq(chip->dev, chip->usbin_valid.irq,
qpnp_chg_usb_usbin_valid_irq_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"usbin-valid", chip);
if (rc < 0) {
pr_err("Can't request %d usbin-valid: %d\n",
chip->usbin_valid.irq, rc);
return rc;
}
chip->chg_gone.irq = spmi_get_irq_byname(spmi,
spmi_resource, "chg-gone");
if (chip->chg_gone.irq < 0) {
pr_err("Unable to get chg-gone irq\n");
return rc;
}
rc = devm_request_irq(chip->dev, chip->chg_gone.irq,
qpnp_chg_usb_chg_gone_irq_handler,
IRQF_TRIGGER_RISING,
"chg-gone", chip);
if (rc < 0) {
pr_err("Can't request %d chg-gone: %d\n",
chip->chg_gone.irq, rc);
return rc;
}
if ((subtype == SMBBP_USB_CHGPTH_SUBTYPE) ||
(subtype == SMBCL_USB_CHGPTH_SUBTYPE)) {
chip->usb_ocp.irq = spmi_get_irq_byname(spmi,
spmi_resource, "usb-ocp");
if (chip->usb_ocp.irq < 0) {
pr_err("Unable to get usbin irq\n");
return rc;
}
rc = devm_request_irq(chip->dev,
chip->usb_ocp.irq,
qpnp_chg_usb_usb_ocp_irq_handler,
IRQF_TRIGGER_RISING, "usb-ocp", chip);
if (rc < 0) {
pr_err("Can't request %d usb-ocp: %d\n",
chip->usb_ocp.irq, rc);
return rc;
}
enable_irq_wake(chip->usb_ocp.irq);
}
enable_irq_wake(chip->usbin_valid.irq);
enable_irq_wake(chip->chg_gone.irq);
break;
case SMBB_DC_CHGPTH_SUBTYPE:
chip->dcin_valid.irq = spmi_get_irq_byname(spmi,
spmi_resource, "dcin-valid");
if (chip->dcin_valid.irq < 0) {
pr_err("Unable to get dcin irq\n");
return -rc;
}
rc = devm_request_irq(chip->dev, chip->dcin_valid.irq,
qpnp_chg_dc_dcin_valid_irq_handler,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"dcin-valid", chip);
if (rc < 0) {
pr_err("Can't request %d dcin-valid: %d\n",
chip->dcin_valid.irq, rc);
return rc;
}
enable_irq_wake(chip->dcin_valid.irq);
break;
}
}
return rc;
}
static int
qpnp_chg_load_battery_data(struct qpnp_chg_chip *chip)
{
struct bms_battery_data batt_data;
struct device_node *node;
struct qpnp_vadc_result result;
int rc;
node = of_find_node_by_name(chip->spmi->dev.of_node,
"qcom,battery-data");
if (node) {
memset(&batt_data, 0, sizeof(struct bms_battery_data));
rc = qpnp_vadc_read(chip->vadc_dev, LR_MUX2_BAT_ID, &result);
if (rc) {
pr_err("error reading batt id channel = %d, rc = %d\n",
LR_MUX2_BAT_ID, rc);
return rc;
}
batt_data.max_voltage_uv = -1;
batt_data.iterm_ua = -1;
rc = of_batterydata_read_data(node,
&batt_data, result.physical);
if (rc) {
pr_err("failed to read battery data: %d\n", rc);
return rc;
}
if (batt_data.max_voltage_uv >= 0) {
chip->max_voltage_mv = batt_data.max_voltage_uv / 1000;
chip->safe_voltage_mv = chip->max_voltage_mv
+ MAX_DELTA_VDD_MAX_MV;
}
if (batt_data.iterm_ua >= 0)
chip->term_current = batt_data.iterm_ua / 1000;
}
return 0;
}
#define WDOG_EN_BIT BIT(7)
static int
qpnp_chg_hwinit(struct qpnp_chg_chip *chip, u8 subtype,
struct spmi_resource *spmi_resource)
{
int rc = 0;
u8 reg = 0;
struct regulator_init_data *init_data;
struct regulator_desc *rdesc;
switch (subtype) {
case SMBB_CHGR_SUBTYPE:
case SMBBP_CHGR_SUBTYPE:
case SMBCL_CHGR_SUBTYPE:
qpnp_chg_vbatweak_set(chip, chip->batt_weak_voltage_mv);
rc = qpnp_chg_vinmin_set(chip, chip->min_voltage_mv);
if (rc) {
pr_debug("failed setting min_voltage rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_vddsafe_set(chip, chip->safe_voltage_mv);
if (rc) {
pr_debug("failed setting safe_voltage rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_vbatdet_set(chip,
chip->max_voltage_mv - chip->resume_delta_mv);
if (rc) {
pr_debug("failed setting resume_voltage rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_ibatmax_set(chip, chip->max_bat_chg_current);
if (rc) {
pr_debug("failed setting ibatmax rc=%d\n", rc);
return rc;
}
if (chip->term_current) {
rc = qpnp_chg_ibatterm_set(chip, chip->term_current);
if (rc) {
pr_debug("failed setting ibatterm rc=%d\n", rc);
return rc;
}
}
rc = qpnp_chg_ibatsafe_set(chip, chip->safe_current);
if (rc) {
pr_debug("failed setting ibat_Safe rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_tchg_max_set(chip, chip->tchg_mins);
if (rc) {
pr_debug("failed setting tchg_mins rc=%d\n", rc);
return rc;
}
/* HACK: Disable wdog */
rc = qpnp_chg_masked_write(chip, chip->chgr_base + 0x62,
0xFF, 0xA0, 1);
/* HACK: use analog EOC */
rc = qpnp_chg_masked_write(chip, chip->chgr_base +
CHGR_IBAT_TERM_CHGR,
0xFF, 0x08, 1);
break;
case SMBB_BUCK_SUBTYPE:
case SMBBP_BUCK_SUBTYPE:
case SMBCL_BUCK_SUBTYPE:
rc = qpnp_chg_toggle_chg_done_logic(chip, 0);
if (rc)
return rc;
rc = qpnp_chg_masked_write(chip,
chip->buck_base + CHGR_BUCK_BCK_VBAT_REG_MODE,
BUCK_VBAT_REG_NODE_SEL_BIT,
BUCK_VBAT_REG_NODE_SEL_BIT, 1);
if (rc) {
pr_debug("failed to enable IR drop comp rc=%d\n", rc);
return rc;
}
rc = qpnp_chg_read(chip, &chip->trim_center,
chip->buck_base + BUCK_CTRL_TRIM1, 1);
if (rc) {
pr_debug("failed to read trim center rc=%d\n", rc);
return rc;
}
chip->trim_center >>= 4;
pr_debug("trim center = %02x\n", chip->trim_center);
break;
case SMBB_BAT_IF_SUBTYPE:
case SMBBP_BAT_IF_SUBTYPE:
case SMBCL_BAT_IF_SUBTYPE:
/* Select battery presence detection */
switch (chip->bpd_detection) {
case BPD_TYPE_BAT_THM:
reg = BAT_THM_EN;
break;
case BPD_TYPE_BAT_ID:
reg = BAT_ID_EN;
break;
case BPD_TYPE_BAT_THM_BAT_ID:
reg = BAT_THM_EN | BAT_ID_EN;
break;
default:
reg = BAT_THM_EN;
break;
}
rc = qpnp_chg_masked_write(chip,
chip->bat_if_base + BAT_IF_BPD_CTRL,
BAT_IF_BPD_CTRL_SEL,
reg, 1);
if (rc) {
pr_debug("failed to chose BPD rc=%d\n", rc);
return rc;
}
/* Force on VREF_BAT_THM */
rc = qpnp_chg_masked_write(chip,
chip->bat_if_base + BAT_IF_VREF_BAT_THM_CTRL,
VREF_BATT_THERM_FORCE_ON,
VREF_BATT_THERM_FORCE_ON, 1);
if (rc) {
pr_debug("failed to force on VREF_BAT_THM rc=%d\n", rc);
return rc;
}
init_data = of_get_regulator_init_data(chip->dev,
spmi_resource->of_node);
if (init_data->constraints.name) {
rdesc = &(chip->batfet_vreg.rdesc);
rdesc->owner = THIS_MODULE;
rdesc->type = REGULATOR_VOLTAGE;
rdesc->ops = &qpnp_chg_batfet_vreg_ops;
rdesc->name = init_data->constraints.name;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_STATUS;
chip->batfet_vreg.rdev = regulator_register(rdesc,
chip->dev, init_data, chip,
spmi_resource->of_node);
if (IS_ERR(chip->batfet_vreg.rdev)) {
rc = PTR_ERR(chip->batfet_vreg.rdev);
chip->batfet_vreg.rdev = NULL;
if (rc != -EPROBE_DEFER)
pr_err("batfet reg failed, rc=%d\n",
rc);
return rc;
}
}
break;
case SMBB_USB_CHGPTH_SUBTYPE:
case SMBBP_USB_CHGPTH_SUBTYPE:
case SMBCL_USB_CHGPTH_SUBTYPE:
if (qpnp_chg_is_usb_chg_plugged_in(chip)) {
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + CHGR_USB_ENUM_T_STOP,
ENUM_T_STOP_BIT,
ENUM_T_STOP_BIT, 1);
if (rc) {
pr_err("failed to write enum stop rc=%d\n", rc);
return -ENXIO;
}
}
init_data = of_get_regulator_init_data(chip->dev,
spmi_resource->of_node);
if (!init_data) {
pr_err("unable to allocate memory\n");
return -ENOMEM;
}
if (init_data->constraints.name) {
if (of_get_property(chip->dev->of_node,
"otg-parent-supply", NULL))
init_data->supply_regulator = "otg-parent";
rdesc = &(chip->otg_vreg.rdesc);
rdesc->owner = THIS_MODULE;
rdesc->type = REGULATOR_VOLTAGE;
rdesc->ops = &qpnp_chg_otg_reg_ops;
rdesc->name = init_data->constraints.name;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_STATUS;
chip->otg_vreg.rdev = regulator_register(rdesc,
chip->dev, init_data, chip,
spmi_resource->of_node);
if (IS_ERR(chip->otg_vreg.rdev)) {
rc = PTR_ERR(chip->otg_vreg.rdev);
chip->otg_vreg.rdev = NULL;
if (rc != -EPROBE_DEFER)
pr_err("OTG reg failed, rc=%d\n", rc);
return rc;
}
}
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + USB_OVP_CTL,
USB_VALID_DEB_20MS,
USB_VALID_DEB_20MS, 1);
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + CHGR_USB_ENUM_T_STOP,
ENUM_T_STOP_BIT,
ENUM_T_STOP_BIT, 1);
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + SEC_ACCESS,
0xFF,
0xA5, 1);
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + USB_CHG_GONE_REV_BST,
0xFF,
0x80, 1);
if ((subtype == SMBBP_USB_CHGPTH_SUBTYPE) ||
(subtype == SMBCL_USB_CHGPTH_SUBTYPE)) {
rc = qpnp_chg_masked_write(chip,
chip->usb_chgpth_base + USB_OCP_THR,
OCP_THR_MASK,
OCP_THR_900_MA, 1);
if (rc)
pr_err("Failed to configure OCP rc = %d\n", rc);
}
break;
case SMBB_DC_CHGPTH_SUBTYPE:
break;
case SMBB_BOOST_SUBTYPE:
case SMBBP_BOOST_SUBTYPE:
init_data = of_get_regulator_init_data(chip->dev,
spmi_resource->of_node);
if (!init_data) {
pr_err("unable to allocate memory\n");
return -ENOMEM;
}
if (init_data->constraints.name) {
if (of_get_property(chip->dev->of_node,
"boost-parent-supply", NULL))
init_data->supply_regulator = "boost-parent";
rdesc = &(chip->boost_vreg.rdesc);
rdesc->owner = THIS_MODULE;
rdesc->type = REGULATOR_VOLTAGE;
rdesc->ops = &qpnp_chg_boost_reg_ops;
rdesc->name = init_data->constraints.name;
init_data->constraints.valid_ops_mask
|= REGULATOR_CHANGE_STATUS
| REGULATOR_CHANGE_VOLTAGE;
chip->boost_vreg.rdev = regulator_register(rdesc,
chip->dev, init_data, chip,
spmi_resource->of_node);
if (IS_ERR(chip->boost_vreg.rdev)) {
rc = PTR_ERR(chip->boost_vreg.rdev);
chip->boost_vreg.rdev = NULL;
if (rc != -EPROBE_DEFER)
pr_err("boost reg failed, rc=%d\n", rc);
return rc;
}
}
break;
case SMBB_MISC_SUBTYPE:
case SMBBP_MISC_SUBTYPE:
case SMBCL_MISC_SUBTYPE:
if (subtype == SMBB_MISC_SUBTYPE)
chip->type = SMBB;
else if (subtype == SMBBP_MISC_SUBTYPE)
chip->type = SMBBP;
else if (subtype == SMBCL_MISC_SUBTYPE)
chip->type = SMBCL;
pr_debug("Setting BOOT_DONE\n");
rc = qpnp_chg_masked_write(chip,
chip->misc_base + CHGR_MISC_BOOT_DONE,
CHGR_BOOT_DONE, CHGR_BOOT_DONE, 1);
rc = qpnp_chg_read(chip, &reg,
chip->misc_base + MISC_REVISION2, 1);
if (rc) {
pr_err("failed to read revision register rc=%d\n", rc);
return rc;
}
chip->revision = reg;
break;
default:
pr_err("Invalid peripheral subtype\n");
}
return rc;
}
#define OF_PROP_READ(chip, prop, qpnp_dt_property, retval, optional) \
do { \
if (retval) \
break; \
\
retval = of_property_read_u32(chip->spmi->dev.of_node, \
"qcom," qpnp_dt_property, \
&chip->prop); \
\
if ((retval == -EINVAL) && optional) \
retval = 0; \
else if (retval) \
pr_err("Error reading " #qpnp_dt_property \
" property rc = %d\n", rc); \
} while (0)
static int
qpnp_charger_read_dt_props(struct qpnp_chg_chip *chip)
{
int rc = 0;
const char *bpd;
OF_PROP_READ(chip, max_voltage_mv, "vddmax-mv", rc, 0);
OF_PROP_READ(chip, min_voltage_mv, "vinmin-mv", rc, 0);
OF_PROP_READ(chip, safe_voltage_mv, "vddsafe-mv", rc, 0);
OF_PROP_READ(chip, resume_delta_mv, "vbatdet-delta-mv", rc, 0);
OF_PROP_READ(chip, safe_current, "ibatsafe-ma", rc, 0);
OF_PROP_READ(chip, max_bat_chg_current, "ibatmax-ma", rc, 0);
if (rc)
pr_err("failed to read required dt parameters %d\n", rc);
OF_PROP_READ(chip, term_current, "ibatterm-ma", rc, 1);
OF_PROP_READ(chip, maxinput_dc_ma, "maxinput-dc-ma", rc, 1);
OF_PROP_READ(chip, maxinput_usb_ma, "maxinput-usb-ma", rc, 1);
OF_PROP_READ(chip, warm_bat_decidegc, "warm-bat-decidegc", rc, 1);
OF_PROP_READ(chip, cool_bat_decidegc, "cool-bat-decidegc", rc, 1);
OF_PROP_READ(chip, tchg_mins, "tchg-mins", rc, 1);
OF_PROP_READ(chip, hot_batt_p, "batt-hot-percentage", rc, 1);
OF_PROP_READ(chip, cold_batt_p, "batt-cold-percentage", rc, 1);
OF_PROP_READ(chip, soc_resume_limit, "resume-soc", rc, 1);
OF_PROP_READ(chip, batt_weak_voltage_mv, "vbatweak-mv", rc, 1);
if (rc)
return rc;
rc = of_property_read_string(chip->spmi->dev.of_node,
"qcom,bpd-detection", &bpd);
if (rc) {
/* Select BAT_THM as default BPD scheme */
chip->bpd_detection = BPD_TYPE_BAT_THM;
rc = 0;
} else {
chip->bpd_detection = get_bpd(bpd);
if (chip->bpd_detection < 0) {
pr_err("failed to determine bpd schema %d\n", rc);
return rc;
}
}
/* Look up JEITA compliance parameters if cool and warm temp provided */
if (chip->cool_bat_decidegc || chip->warm_bat_decidegc) {
chip->adc_tm_dev = qpnp_get_adc_tm(chip->dev, "chg");
if (IS_ERR(chip->adc_tm_dev)) {
rc = PTR_ERR(chip->adc_tm_dev);
if (rc != -EPROBE_DEFER)
pr_err("adc-tm not ready, defer probe\n");
return rc;
}
OF_PROP_READ(chip, warm_bat_chg_ma, "ibatmax-warm-ma", rc, 1);
OF_PROP_READ(chip, cool_bat_chg_ma, "ibatmax-cool-ma", rc, 1);
OF_PROP_READ(chip, warm_bat_mv, "warm-bat-mv", rc, 1);
OF_PROP_READ(chip, cool_bat_mv, "cool-bat-mv", rc, 1);
if (rc)
return rc;
}
/* Get the use-external-rsense property */
chip->use_external_rsense = of_property_read_bool(
chip->spmi->dev.of_node,
"qcom,use-external-rsense");
/* Get the btc-disabled property */
chip->btc_disabled = of_property_read_bool(chip->spmi->dev.of_node,
"qcom,btc-disabled");
ext_ovp_present = of_property_read_bool(chip->spmi->dev.of_node,
"qcom,ext-ovp-present");
/* Get the charging-disabled property */
chip->charging_disabled = of_property_read_bool(chip->spmi->dev.of_node,
"qcom,charging-disabled");
chip->ovp_monitor_enable = of_property_read_bool(chip->spmi->dev.of_node,
"qcom,ovp-monitor-en");
/* Get the duty-cycle-100p property */
chip->duty_cycle_100p = of_property_read_bool(
chip->spmi->dev.of_node,
"qcom,duty-cycle-100p");
/* Get the fake-batt-values property */
chip->use_default_batt_values =
of_property_read_bool(chip->spmi->dev.of_node,
"qcom,use-default-batt-values");
/* Disable charging when faking battery values */
if (chip->use_default_batt_values)
chip->charging_disabled = true;
chip->power_stage_workaround_enable =
of_property_read_bool(chip->spmi->dev.of_node,
"qcom,power-stage-reduced");
chip->ibat_calibration_enabled =
of_property_read_bool(chip->spmi->dev.of_node,
"qcom,ibat-calibration-enabled");
of_get_property(chip->spmi->dev.of_node, "qcom,thermal-mitigation",
&(chip->thermal_levels));
if (chip->thermal_levels > sizeof(int)) {
chip->thermal_mitigation = devm_kzalloc(chip->dev,
chip->thermal_levels,
GFP_KERNEL);
if (chip->thermal_mitigation == NULL) {
pr_err("thermal mitigation kzalloc() failed.\n");
return -ENOMEM;
}
chip->thermal_levels /= sizeof(int);
rc = of_property_read_u32_array(chip->spmi->dev.of_node,
"qcom,thermal-mitigation",
chip->thermal_mitigation, chip->thermal_levels);
if (rc) {
pr_err("qcom,thermal-mitigation missing in dt\n");
return rc;
}
}
return rc;
}
static int __devinit
qpnp_charger_probe(struct spmi_device *spmi)
{
u8 subtype;
struct qpnp_chg_chip *chip;
struct resource *resource;
struct spmi_resource *spmi_resource;
int rc = 0;
chip = devm_kzalloc(&spmi->dev,
sizeof(struct qpnp_chg_chip), GFP_KERNEL);
if (chip == NULL) {
pr_err("kzalloc() failed.\n");
return -ENOMEM;
}
chip->prev_usb_max_ma = -EINVAL;
chip->fake_battery_soc = -EINVAL;
chip->dev = &(spmi->dev);
chip->spmi = spmi;
chip->usb_psy = power_supply_get_by_name("usb");
if (!chip->usb_psy) {
pr_err("usb supply not found deferring probe\n");
rc = -EPROBE_DEFER;
goto fail_chg_enable;
}
mutex_init(&chip->jeita_configure_lock);
spin_lock_init(&chip->usbin_health_monitor_lock);
alarm_init(&chip->reduce_power_stage_alarm, ANDROID_ALARM_RTC_WAKEUP,
qpnp_chg_reduce_power_stage_callback);
INIT_WORK(&chip->reduce_power_stage_work,
qpnp_chg_reduce_power_stage_work);
mutex_init(&chip->batfet_vreg_lock);
INIT_WORK(&chip->batfet_lcl_work,
qpnp_chg_batfet_lcl_work);
INIT_WORK(&chip->insertion_ocv_work,
qpnp_chg_insertion_ocv_work);
/* Get all device tree properties */
rc = qpnp_charger_read_dt_props(chip);
if (rc)
return rc;
/*
* Check if bat_if is set in DT and make sure VADC is present
* Also try loading the battery data profile if bat_if exists
*/
spmi_for_each_container_dev(spmi_resource, spmi) {
if (!spmi_resource) {
pr_err("qpnp_chg: spmi resource absent\n");
rc = -ENXIO;
goto fail_chg_enable;
}
resource = spmi_get_resource(spmi, spmi_resource,
IORESOURCE_MEM, 0);
if (!(resource && resource->start)) {
pr_err("node %s IO resource absent!\n",
spmi->dev.of_node->full_name);
rc = -ENXIO;
goto fail_chg_enable;
}
rc = qpnp_chg_read(chip, &subtype,
resource->start + REG_OFFSET_PERP_SUBTYPE, 1);
if (rc) {
pr_err("Peripheral subtype read failed rc=%d\n", rc);
goto fail_chg_enable;
}
if (subtype == SMBB_BAT_IF_SUBTYPE ||
subtype == SMBBP_BAT_IF_SUBTYPE ||
subtype == SMBCL_BAT_IF_SUBTYPE) {
chip->vadc_dev = qpnp_get_vadc(chip->dev, "chg");
if (IS_ERR(chip->vadc_dev)) {
rc = PTR_ERR(chip->vadc_dev);
if (rc != -EPROBE_DEFER)
pr_err("vadc property missing\n");
goto fail_chg_enable;
}
if (subtype == SMBB_BAT_IF_SUBTYPE) {
chip->iadc_dev = qpnp_get_iadc(chip->dev,
"chg");
if (IS_ERR(chip->iadc_dev)) {
rc = PTR_ERR(chip->iadc_dev);
if (rc != -EPROBE_DEFER)
pr_err("iadc property missing\n");
goto fail_chg_enable;
}
}
rc = qpnp_chg_load_battery_data(chip);
if (rc)
goto fail_chg_enable;
}
}
spmi_for_each_container_dev(spmi_resource, spmi) {
if (!spmi_resource) {
pr_err("qpnp_chg: spmi resource absent\n");
rc = -ENXIO;
goto fail_chg_enable;
}
resource = spmi_get_resource(spmi, spmi_resource,
IORESOURCE_MEM, 0);
if (!(resource && resource->start)) {
pr_err("node %s IO resource absent!\n",
spmi->dev.of_node->full_name);
rc = -ENXIO;
goto fail_chg_enable;
}
rc = qpnp_chg_read(chip, &subtype,
resource->start + REG_OFFSET_PERP_SUBTYPE, 1);
if (rc) {
pr_err("Peripheral subtype read failed rc=%d\n", rc);
goto fail_chg_enable;
}
switch (subtype) {
case SMBB_CHGR_SUBTYPE:
case SMBBP_CHGR_SUBTYPE:
case SMBCL_CHGR_SUBTYPE:
chip->chgr_base = resource->start;
rc = qpnp_chg_hwinit(chip, subtype, spmi_resource);
if (rc) {
pr_err("Failed to init subtype 0x%x rc=%d\n",
subtype, rc);
goto fail_chg_enable;
}
break;
case SMBB_BUCK_SUBTYPE:
case SMBBP_BUCK_SUBTYPE:
case SMBCL_BUCK_SUBTYPE:
chip->buck_base = resource->start;
rc = qpnp_chg_hwinit(chip, subtype, spmi_resource);
if (rc) {
pr_err("Failed to init subtype 0x%x rc=%d\n",
subtype, rc);
goto fail_chg_enable;
}
rc = qpnp_chg_masked_write(chip,
chip->buck_base + SEC_ACCESS,
0xFF,
0xA5, 1);
rc = qpnp_chg_masked_write(chip,
chip->buck_base + BUCK_VCHG_OV,
0xff,
0x00, 1);
if (chip->duty_cycle_100p) {
rc = qpnp_buck_set_100_duty_cycle_enable(chip,
1);
if (rc) {
pr_err("failed to set duty cycle %d\n",
rc);
goto fail_chg_enable;
}
}
break;
case SMBB_BAT_IF_SUBTYPE:
case SMBBP_BAT_IF_SUBTYPE:
case SMBCL_BAT_IF_SUBTYPE:
chip->bat_if_base = resource->start;
rc = qpnp_chg_hwinit(chip, subtype, spmi_resource);
if (rc) {
pr_err("Failed to init subtype 0x%x rc=%d\n",
subtype, rc);
goto fail_chg_enable;
}
break;
case SMBB_USB_CHGPTH_SUBTYPE:
case SMBBP_USB_CHGPTH_SUBTYPE:
case SMBCL_USB_CHGPTH_SUBTYPE:
chip->usb_chgpth_base = resource->start;
rc = qpnp_chg_hwinit(chip, subtype, spmi_resource);
if (rc) {
if (rc != -EPROBE_DEFER)
pr_err("Failed to init subtype 0x%x rc=%d\n",
subtype, rc);
goto fail_chg_enable;
}
break;
case SMBB_DC_CHGPTH_SUBTYPE:
chip->dc_chgpth_base = resource->start;
rc = qpnp_chg_hwinit(chip, subtype, spmi_resource);
if (rc) {
pr_err("Failed to init subtype 0x%x rc=%d\n",
subtype, rc);
goto fail_chg_enable;
}
break;
case SMBB_BOOST_SUBTYPE:
case SMBBP_BOOST_SUBTYPE:
chip->boost_base = resource->start;
rc = qpnp_chg_hwinit(chip, subtype, spmi_resource);
if (rc) {
if (rc != -EPROBE_DEFER)
pr_err("Failed to init subtype 0x%x rc=%d\n",
subtype, rc);
goto fail_chg_enable;
}
break;
case SMBB_MISC_SUBTYPE:
case SMBBP_MISC_SUBTYPE:
case SMBCL_MISC_SUBTYPE:
chip->misc_base = resource->start;
rc = qpnp_chg_hwinit(chip, subtype, spmi_resource);
if (rc) {
pr_err("Failed to init subtype=0x%x rc=%d\n",
subtype, rc);
goto fail_chg_enable;
}
break;
default:
pr_err("Invalid peripheral subtype=0x%x\n", subtype);
rc = -EINVAL;
goto fail_chg_enable;
}
}
dev_set_drvdata(&spmi->dev, chip);
device_init_wakeup(&spmi->dev, 1);
chip->insertion_ocv_uv = -EINVAL;
chip->batt_present = qpnp_chg_is_batt_present(chip);
if (chip->bat_if_base) {
chip->batt_psy.name = "battery";
chip->batt_psy.type = POWER_SUPPLY_TYPE_BATTERY;
chip->batt_psy.properties = msm_batt_power_props;
chip->batt_psy.num_properties =
ARRAY_SIZE(msm_batt_power_props);
chip->batt_psy.get_property = qpnp_batt_power_get_property;
chip->batt_psy.set_property = qpnp_batt_power_set_property;
chip->batt_psy.property_is_writeable =
qpnp_batt_property_is_writeable;
chip->batt_psy.external_power_changed =
qpnp_batt_external_power_changed;
chip->batt_psy.supplied_to = pm_batt_supplied_to;
chip->batt_psy.num_supplicants =
ARRAY_SIZE(pm_batt_supplied_to);
rc = power_supply_register(chip->dev, &chip->batt_psy);
if (rc < 0) {
pr_err("batt failed to register rc = %d\n", rc);
goto fail_chg_enable;
}
INIT_WORK(&chip->adc_measure_work,
qpnp_bat_if_adc_measure_work);
INIT_WORK(&chip->adc_disable_work,
qpnp_bat_if_adc_disable_work);
}
INIT_DELAYED_WORK(&chip->eoc_work, qpnp_eoc_work);
INIT_DELAYED_WORK(&chip->arb_stop_work, qpnp_arb_stop_work);
INIT_DELAYED_WORK(&chip->usbin_health_check,
qpnp_usbin_health_check_work);
INIT_WORK(&chip->soc_check_work, qpnp_chg_soc_check_work);
INIT_DELAYED_WORK(&chip->aicl_check_work, qpnp_aicl_check_work);
if (chip->dc_chgpth_base) {
chip->dc_psy.name = "qpnp-dc";
chip->dc_psy.type = POWER_SUPPLY_TYPE_MAINS;
chip->dc_psy.supplied_to = pm_power_supplied_to;
chip->dc_psy.num_supplicants = ARRAY_SIZE(pm_power_supplied_to);
chip->dc_psy.properties = pm_power_props_mains;
chip->dc_psy.num_properties = ARRAY_SIZE(pm_power_props_mains);
chip->dc_psy.get_property = qpnp_power_get_property_mains;
chip->dc_psy.set_property = qpnp_dc_power_set_property;
chip->dc_psy.property_is_writeable =
qpnp_dc_property_is_writeable;
rc = power_supply_register(chip->dev, &chip->dc_psy);
if (rc < 0) {
pr_err("power_supply_register dc failed rc=%d\n", rc);
goto unregister_batt;
}
}
/* Turn on appropriate workaround flags */
rc = qpnp_chg_setup_flags(chip);
if (rc < 0) {
pr_err("failed to setup flags rc=%d\n", rc);
goto unregister_dc_psy;
}
if (chip->maxinput_dc_ma && chip->dc_chgpth_base) {
rc = qpnp_chg_idcmax_set(chip, chip->maxinput_dc_ma);
if (rc) {
pr_err("Error setting idcmax property %d\n", rc);
goto unregister_dc_psy;
}
}
if ((chip->cool_bat_decidegc || chip->warm_bat_decidegc)
&& chip->bat_if_base) {
chip->adc_param.low_temp = chip->cool_bat_decidegc;
chip->adc_param.high_temp = chip->warm_bat_decidegc;
chip->adc_param.timer_interval = ADC_MEAS2_INTERVAL_1S;
chip->adc_param.state_request = ADC_TM_HIGH_LOW_THR_ENABLE;
chip->adc_param.btm_ctx = chip;
chip->adc_param.threshold_notification =
qpnp_chg_adc_notification;
chip->adc_param.channel = LR_MUX1_BATT_THERM;
if (get_prop_batt_present(chip)) {
rc = qpnp_adc_tm_channel_measure(chip->adc_tm_dev,
&chip->adc_param);
if (rc) {
pr_err("request ADC error %d\n", rc);
goto unregister_dc_psy;
}
}
}
rc = qpnp_chg_bat_if_configure_btc(chip);
if (rc) {
pr_err("failed to configure btc %d\n", rc);
goto unregister_dc_psy;
}
qpnp_chg_charge_en(chip, !chip->charging_disabled);
qpnp_chg_force_run_on_batt(chip, chip->charging_disabled);
qpnp_chg_set_appropriate_vddmax(chip);
rc = qpnp_chg_request_irqs(chip);
if (rc) {
pr_err("failed to request interrupts %d\n", rc);
goto unregister_dc_psy;
}
qpnp_chg_usb_chg_gone_irq_handler(chip->chg_gone.irq, chip);
qpnp_chg_usb_usbin_valid_irq_handler(chip->usbin_valid.irq, chip);
qpnp_chg_dc_dcin_valid_irq_handler(chip->dcin_valid.irq, chip);
power_supply_set_present(chip->usb_psy,
qpnp_chg_is_usb_chg_plugged_in(chip));
/* Set USB psy online to avoid userspace from shutting down if battery
* capacity is at zero and no chargers online. */
if (qpnp_chg_is_usb_chg_plugged_in(chip))
power_supply_set_online(chip->usb_psy, 1);
schedule_delayed_work(&chip->aicl_check_work,
msecs_to_jiffies(EOC_CHECK_PERIOD_MS));
pr_info("success chg_dis = %d, bpd = %d, usb = %d, dc = %d b_health = %d batt_present = %d\n",
chip->charging_disabled,
chip->bpd_detection,
qpnp_chg_is_usb_chg_plugged_in(chip),
qpnp_chg_is_dc_chg_plugged_in(chip),
get_prop_batt_present(chip),
get_prop_batt_health(chip));
return 0;
unregister_dc_psy:
if (chip->dc_chgpth_base)
power_supply_unregister(&chip->dc_psy);
unregister_batt:
if (chip->bat_if_base)
power_supply_unregister(&chip->batt_psy);
fail_chg_enable:
regulator_unregister(chip->otg_vreg.rdev);
regulator_unregister(chip->boost_vreg.rdev);
return rc;
}
static int __devexit
qpnp_charger_remove(struct spmi_device *spmi)
{
struct qpnp_chg_chip *chip = dev_get_drvdata(&spmi->dev);
if ((chip->cool_bat_decidegc || chip->warm_bat_decidegc)
&& chip->batt_present) {
qpnp_adc_tm_disable_chan_meas(chip->adc_tm_dev,
&chip->adc_param);
}
cancel_delayed_work_sync(&chip->aicl_check_work);
power_supply_unregister(&chip->dc_psy);
cancel_work_sync(&chip->soc_check_work);
cancel_delayed_work_sync(&chip->usbin_health_check);
cancel_delayed_work_sync(&chip->arb_stop_work);
cancel_delayed_work_sync(&chip->eoc_work);
cancel_work_sync(&chip->adc_disable_work);
cancel_work_sync(&chip->adc_measure_work);
power_supply_unregister(&chip->batt_psy);
cancel_work_sync(&chip->batfet_lcl_work);
cancel_work_sync(&chip->insertion_ocv_work);
cancel_work_sync(&chip->reduce_power_stage_work);
alarm_cancel(&chip->reduce_power_stage_alarm);
mutex_destroy(&chip->batfet_vreg_lock);
mutex_destroy(&chip->jeita_configure_lock);
regulator_unregister(chip->otg_vreg.rdev);
regulator_unregister(chip->boost_vreg.rdev);
return 0;
}
static int qpnp_chg_resume(struct device *dev)
{
struct qpnp_chg_chip *chip = dev_get_drvdata(dev);
int rc = 0;
if (chip->bat_if_base) {
rc = qpnp_chg_masked_write(chip,
chip->bat_if_base + BAT_IF_VREF_BAT_THM_CTRL,
VREF_BATT_THERM_FORCE_ON,
VREF_BATT_THERM_FORCE_ON, 1);
if (rc)
pr_debug("failed to force on VREF_BAT_THM rc=%d\n", rc);
}
return rc;
}
static int qpnp_chg_suspend(struct device *dev)
{
struct qpnp_chg_chip *chip = dev_get_drvdata(dev);
int rc = 0;
if (chip->bat_if_base) {
rc = qpnp_chg_masked_write(chip,
chip->bat_if_base + BAT_IF_VREF_BAT_THM_CTRL,
VREF_BATT_THERM_FORCE_ON,
VREF_BAT_THM_ENABLED_FSM, 1);
if (rc)
pr_debug("failed to set FSM VREF_BAT_THM rc=%d\n", rc);
}
return rc;
}
static const struct dev_pm_ops qpnp_chg_pm_ops = {
.resume = qpnp_chg_resume,
.suspend = qpnp_chg_suspend,
};
static struct spmi_driver qpnp_charger_driver = {
.probe = qpnp_charger_probe,
.remove = __devexit_p(qpnp_charger_remove),
.driver = {
.name = QPNP_CHARGER_DEV_NAME,
.owner = THIS_MODULE,
.of_match_table = qpnp_charger_match_table,
.pm = &qpnp_chg_pm_ops,
},
};
/**
* qpnp_chg_init() - register spmi driver for qpnp-chg
*/
int __init
qpnp_chg_init(void)
{
return spmi_driver_register(&qpnp_charger_driver);
}
module_init(qpnp_chg_init);
static void __exit
qpnp_chg_exit(void)
{
spmi_driver_unregister(&qpnp_charger_driver);
}
module_exit(qpnp_chg_exit);
MODULE_DESCRIPTION("QPNP charger driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" QPNP_CHARGER_DEV_NAME);