antifallobst
/
lineage_kernel_xcoverpro
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
lineage_kernel_xcoverpro/drivers/power/s2mu004_charger.c

1248 lines
35 KiB
C
Executable File
Raw Permalink Blame History

/*
* s2mu004_charger.c - S2MU004 Charger Driver
*
* Copyright (C) 2016 Samsung Electronics Co.Ltd
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/mfd/samsung/s2mu004.h>
#include <linux/power/s2mu004_charger.h>
#include <linux/version.h>
#include <linux/muic/muic.h>
#define ENABLE_MIVR 0
#define EN_OVP_IRQ 1
#define EN_IEOC_IRQ 1
#define EN_TOPOFF_IRQ 1
#define EN_RECHG_REQ_IRQ 0
#define EN_TR_IRQ 0
#define EN_MIVR_SW_REGULATION 0
#define EN_BST_IRQ 0
#define EN_BAT_DET_IRQ 0
#define MINVAL(a, b) ((a <= b) ? a : b)
#define EOC_DEBOUNCE_CNT 2
#define HEALTH_DEBOUNCE_CNT 1
#define DEFAULT_CHARGING_CURRENT 500
#define EOC_SLEEP 200
#define EOC_TIMEOUT (EOC_SLEEP * 6)
#ifndef EN_TEST_READ
#define EN_TEST_READ 1
#endif
#define ENABLE 1
#define DISABLE 0
static char *s2mu004_supplied_to[] = {
"battery",
};
static enum power_supply_property s2mu004_charger_props[] = {
};
static enum power_supply_property s2mu004_otg_props[] = {
POWER_SUPPLY_PROP_ONLINE,
};
static int s2mu004_get_charging_health(struct s2mu004_charger_data *charger);
static void s2mu004_test_read(struct i2c_client *i2c)
{
u8 data;
char str[1016] = {0,};
int i;
for (i = 0x0A; i <= 0x24; i++) {
s2mu004_read_reg(i2c, i, &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", i, data);
}
s2mu004_read_reg(i2c, 0x33, &data);
pr_err("%s: %s0x33:0x%02x\n", __func__, str, data);
}
static int s2mu004_charger_otg_control(
struct s2mu004_charger_data *charger, bool enable)
{
u8 chg_sts2, chg_ctrl0, temp;
pr_info("%s: called charger otg control : %s\n", __func__,
enable ? "ON" : "OFF");
if (charger->is_charging) {
pr_info("%s: Charger is enabled and OTG noti received!!!\n", __func__);
pr_info("%s: is_charging: %d, otg_on: %d",
__func__, charger->is_charging, charger->otg_on);
s2mu004_test_read(charger->i2c);
return 0;
}
if (charger->otg_on == enable)
return 0;
mutex_lock(&charger->charger_mutex);
if (!enable) {
s2mu004_update_reg(charger->i2c,
S2MU004_CHG_CTRL0, CHG_MODE, REG_MODE_MASK);
s2mu004_update_reg(charger->i2c, 0xAE, 0x80, 0xF0);
} else {
s2mu004_update_reg(charger->i2c,
S2MU004_CHG_CTRL4,
S2MU004_SET_OTG_OCP_1500mA << SET_OTG_OCP_SHIFT,
SET_OTG_OCP_MASK);
msleep(30);
s2mu004_update_reg(charger->i2c, 0xAE, 0x00, 0xF0);
s2mu004_update_reg(charger->i2c,
S2MU004_CHG_CTRL0, OTG_BST_MODE, REG_MODE_MASK);
charger->cable_type = POWER_SUPPLY_TYPE_OTG;
}
charger->otg_on = enable;
mutex_unlock(&charger->charger_mutex);
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS2, &chg_sts2);
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL0, &chg_ctrl0);
s2mu004_read_reg(charger->i2c, 0xAE, &temp);
pr_info("%s S2MU004_CHG_STATUS2: 0x%x\n", __func__, chg_sts2);
pr_info("%s S2MU004_CHG_CTRL0: 0x%x\n", __func__, chg_ctrl0);
pr_info("%s 0xAE: 0x%x\n", __func__, temp);
power_supply_changed(charger->psy_otg);
return enable;
}
static void s2mu004_enable_charger_switch(
struct s2mu004_charger_data *charger, int onoff)
{
if (charger->otg_on) {
pr_info("[DEBUG] %s: skipped set(%d) : OTG is on\n", __func__, onoff);
return;
}
if (onoff > 0) {
pr_info("[DEBUG]%s: turn on charger\n", __func__);
/* forced ASYNC */
s2mu004_update_reg(charger->i2c, 0x30, 0x03, 0x03);
mdelay(30);
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL0, CHG_MODE, REG_MODE_MASK);
/* timer fault set 16hr(max) */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL16,
S2MU004_FC_CHG_TIMER_16hr << SET_TIME_CHG_SHIFT,
SET_TIME_CHG_MASK);
mdelay(100);
/* Auto SYNC to ASYNC - default */
s2mu004_update_reg(charger->i2c, 0x30, 0x01, 0x03);
/* async off */
s2mu004_update_reg(charger->i2c, 0x96, 0x00, 0x01 << 3);
} else {
pr_info("[DEBUG] %s: turn off charger\n", __func__);
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL0, BUCK_MODE, REG_MODE_MASK);
/* async on */
s2mu004_update_reg(charger->i2c, 0x96, 0x01 << 3, 0x01 << 3);
mdelay(100);
}
}
static void s2mu004_set_buck(
struct s2mu004_charger_data *charger, int enable) {
if (enable) {
pr_info("[DEBUG]%s: set buck on\n", __func__);
s2mu004_enable_charger_switch(charger, charger->is_charging);
} else {
pr_info("[DEBUG]%s: set buck off (charger off mode)\n", __func__);
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL0, CHARGER_OFF_MODE, REG_MODE_MASK);
/* async on */
s2mu004_update_reg(charger->i2c, 0x96, 0x01 << 3, 0x01 << 3);
mdelay(100);
}
}
static void s2mu004_set_regulation_voltage(
struct s2mu004_charger_data *charger, int float_voltage)
{
u8 data;
pr_info("[DEBUG]%s: float_voltage %d\n", __func__, float_voltage);
if (float_voltage <= 3900)
data = 0;
else if (float_voltage > 3900 && float_voltage <= 4530)
data = (float_voltage - 3900) / 10;
else
data = 0x3f;
s2mu004_update_reg(charger->i2c,
S2MU004_CHG_CTRL6, data << SET_VF_VBAT_SHIFT, SET_VF_VBAT_MASK);
}
static int s2mu004_get_regulation_voltage(struct s2mu004_charger_data *charger)
{
u8 reg_data = 0;
int float_voltage;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL6, &reg_data);
reg_data &= 0x3F;
float_voltage = reg_data * 10 + 3900;
pr_debug("%s: battery cv reg : 0x%x, float voltage val : %d\n",
__func__, reg_data, float_voltage);
return float_voltage;
}
static void s2mu004_set_input_current_limit(
struct s2mu004_charger_data *charger, int charging_current)
{
u8 data;
if (charging_current <= 100)
data = 0x02;
else if (charging_current > 100 && charging_current <= 2500)
data = (charging_current - 50) / 25;
else
data = 0x62;
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL2,
data << INPUT_CURRENT_LIMIT_SHIFT, INPUT_CURRENT_LIMIT_MASK);
pr_info("[DEBUG]%s: current %d, 0x%x\n", __func__, charging_current, data);
#if EN_TEST_READ
s2mu004_test_read(charger->i2c);
#endif
}
static int s2mu004_get_input_current_limit(struct s2mu004_charger_data *charger)
{
u8 data;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL2, &data);
if (data < 0)
return data;
data = data & INPUT_CURRENT_LIMIT_MASK;
if (data > 0x62) {
pr_err("%s: Invalid current limit in register\n", __func__);
data = 0x62;
}
return data * 25 + 50;
}
static void s2mu004_set_fast_charging_current(
struct s2mu004_charger_data *charger, int charging_current)
{
u8 data;
if (charging_current <= 100)
data = 0x03;
else if (charging_current > 100 && charging_current <= 3150)
data = (charging_current / 25) - 1;
else
data = 0x7D;
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL9,
data << FAST_CHARGING_CURRENT_SHIFT, FAST_CHARGING_CURRENT_MASK);
pr_info("[DEBUG]%s: current %d, 0x%02x\n", __func__, charging_current, data);
if (data > 0x11)
data = 0x11; /* 0x11 : 450mA */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL8,
data << COOL_CHARGING_CURRENT_SHIFT, COOL_CHARGING_CURRENT_MASK);
#if EN_TEST_READ
s2mu004_test_read(charger->i2c);
#endif
}
static int s2mu004_get_fast_charging_current(
struct s2mu004_charger_data *charger)
{
u8 data;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL9, &data);
if (data < 0)
return data;
data = data & FAST_CHARGING_CURRENT_MASK;
if (data > 0x7D) {
pr_err("%s: Invalid fast charging current in register\n", __func__);
data = 0x7D;
}
return (data + 1) * 25;
}
static void s2mu004_set_topoff_current(
struct s2mu004_charger_data *charger,
int eoc_1st_2nd, int current_limit)
{
int data;
pr_info("[DEBUG]%s: current %d\n", __func__, current_limit);
if (current_limit <= 100)
data = 0;
else if (current_limit > 100 && current_limit <= 475)
data = (current_limit - 100) / 25;
else
data = 0x0F;
switch (eoc_1st_2nd) {
case 1:
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL11,
data << FIRST_TOPOFF_CURRENT_SHIFT, FIRST_TOPOFF_CURRENT_MASK);
break;
default:
break;
}
}
static int s2mu004_get_topoff_setting(
struct s2mu004_charger_data *charger)
{
u8 data;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL11, &data);
if (data < 0)
return data;
data = data & FIRST_TOPOFF_CURRENT_MASK;
if (data > 0x0F)
data = 0x0F;
return data * 25 + 100;
}
enum {
S2MU004_CHG_2L_IVR_4300MV = 0,
S2MU004_CHG_2L_IVR_4500MV,
S2MU004_CHG_2L_IVR_4700MV,
S2MU004_CHG_2L_IVR_4900MV,
};
#if ENABLE_MIVR
/* charger input regulation voltage setting */
static void s2mu004_set_ivr_level(struct s2mu004_charger_data *charger)
{
int chg_2l_ivr = S2MU004_CHG_2L_IVR_4500MV;
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL5,
chg_2l_ivr << SET_CHG_2L_DROP_SHIFT, SET_CHG_2L_DROP_MASK);
}
#endif /*ENABLE_MIVR*/
static bool s2mu004_chg_init(struct s2mu004_charger_data *charger)
{
u8 temp;
/* Read Charger IC Dev ID */
s2mu004_read_reg(charger->i2c, S2MU004_REG_REV_ID, &temp);
charger->dev_id = (temp & 0xF0) >> 4;
pr_info("%s : DEV ID : 0x%x\n", __func__, charger->dev_id);
/* Poor-Chg-INT Masking */
s2mu004_update_reg(charger->i2c, 0x32, 0x03, 0x03);
/*
* When Self Discharge Function is activated, Charger doesn't stop charging.
* If you write 0xb0[4]=1, charger will stop the charging, when self discharge
* condition is satisfied.
*/
s2mu004_update_reg(charger->i2c, 0xb0, 0x0, 0x1 << 4);
s2mu004_update_reg(charger->i2c, S2MU004_REG_SC_INT1_MASK,
Poor_CHG_INT_MASK, Poor_CHG_INT_MASK);
s2mu004_write_reg(charger->i2c, 0x02, 0x0);
s2mu004_write_reg(charger->i2c, 0x03, 0x0);
/* ready for self-discharge, 0x76 */
s2mu004_update_reg(charger->i2c, S2MU004_REG_SELFDIS_CFG3,
SELF_DISCHG_MODE_MASK, SELF_DISCHG_MODE_MASK);
/* Set Top-Off timer to 30 minutes */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL17,
S2MU004_TOPOFF_TIMER_30m << TOP_OFF_TIME_SHIFT,
TOP_OFF_TIME_MASK);
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL17, &temp);
pr_info("%s : S2MU004_CHG_CTRL17 : 0x%x\n", __func__, temp);
/* enable Watchdog timer and only Charging off */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL13,
ENABLE << SET_EN_WDT_SHIFT | DISABLE << SET_EN_WDT_AP_RESET_SHIFT,
SET_EN_WDT_MASK | SET_EN_WDT_AP_RESET_MASK);
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL13, &temp);
pr_info("%s : S2MU004_CHG_CTRL13 : 0x%x\n", __func__, temp);
/* set watchdog timer to 80 seconds */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL17,
S2MU004_WDT_TIMER_80s << WDT_TIME_SHIFT,
WDT_TIME_MASK);
/* IVR Recovery enable */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL13,
0x1 << SET_IVR_Recovery_SHIFT, SET_IVR_Recovery_MASK);
/* Boost OSC 1Mhz */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL15,
0x02 << SET_OSC_BST_SHIFT, SET_OSC_BST_MASK);
/* QBAT switch speed config */
s2mu004_update_reg(charger->i2c, 0xB2, 0x0, 0xf << 4);
/* Top off debounce time set 1 sec */
s2mu004_update_reg(charger->i2c, 0xC0, 0x3 << 6, 0x3 << 6);
/* SC_CTRL21 register Minumum Charging OCP Level set to 6A */
s2mu004_write_reg(charger->i2c, 0x29, 0x04);
switch (charger->pdata->chg_switching_freq) {
case S2MU004_OSC_BUCK_FRQ_750kHz:
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL12,
S2MU004_OSC_BUCK_FRQ_750kHz << SET_OSC_BUCK_SHIFT, SET_OSC_BUCK_MASK);
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL12,
S2MU004_OSC_BUCK_FRQ_750kHz << SET_OSC_BUCK_3L_SHIFT, SET_OSC_BUCK_3L_MASK);
break;
default:
/* Set OSC BUCK/BUCK 3L frequencies to default 1MHz */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL12,
S2MU004_OSC_BUCK_FRQ_1MHz << SET_OSC_BUCK_SHIFT, SET_OSC_BUCK_MASK);
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL12,
S2MU004_OSC_BUCK_FRQ_1MHz << SET_OSC_BUCK_3L_SHIFT, SET_OSC_BUCK_3L_MASK);
break;
}
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL12, &temp);
pr_info("%s : S2MU004_CHG_CTRL12 : 0x%x\n", __func__, temp);
return true;
}
static int s2mu004_get_charging_status(
struct s2mu004_charger_data *charger)
{
int status = POWER_SUPPLY_STATUS_UNKNOWN;
int ret;
u8 chg_sts0, chg_sts1;
union power_supply_propval value;
struct power_supply *psy;
ret = s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS0, &chg_sts0);
ret = s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS1, &chg_sts1);
psy = power_supply_get_by_name(charger->pdata->fuelgauge_name);
if (!psy)
return -EINVAL;
ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_CURRENT_AVG, &value);
if (ret < 0)
pr_err("%s: Fail to execute property\n", __func__);
if (ret < 0)
return status;
if (chg_sts1 & 0x80)
status = POWER_SUPPLY_STATUS_DISCHARGING;
else if (chg_sts1 & 0x02 || chg_sts1 & 0x01) {
pr_info("%s: full check curr_avg(%d), topoff_curr(%d)\n",
__func__, value.intval, charger->topoff_current);
if (value.intval < charger->topoff_current)
status = POWER_SUPPLY_STATUS_FULL;
else
status = POWER_SUPPLY_STATUS_CHARGING;
} else if ((chg_sts0 & 0xE0) == 0xA0 || (chg_sts0 & 0xE0) == 0x60)
status = POWER_SUPPLY_STATUS_CHARGING;
else
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
#if EN_TEST_READ
s2mu004_test_read(charger->i2c);
#endif
return status;
}
static int s2mu004_get_charge_type(struct s2mu004_charger_data *charger)
{
int status = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
u8 ret;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS3, &ret);
if (ret < 0)
pr_err("%s fail\n", __func__);
switch ((ret & BAT_STATUS_MASK) >> BAT_STATUS_SHIFT) {
case 0x4:
case 0x5:
status = POWER_SUPPLY_CHARGE_TYPE_FAST;
break;
case 0x2:
/* pre-charge mode */
status = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
break;
}
return status;
}
static bool s2mu004_get_batt_present(struct s2mu004_charger_data *charger)
{
u8 ret;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS3, &ret);
if (ret < 0)
return false;
return (ret & DET_BAT_STATUS_MASK) ? true : false;
}
static void s2mu004_wdt_clear(struct s2mu004_charger_data *charger)
{
u8 reg_data, chg_fault_status, en_chg;
/* watchdog kick */
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL14,
0x1 << WDT_CLR_SHIFT, WDT_CLR_MASK);
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS1, &reg_data);
chg_fault_status = (reg_data & CHG_FAULT_STATUS_MASK) >> CHG_FAULT_STATUS_SHIFT;
if ((chg_fault_status == CHG_STATUS_WD_SUSPEND) ||
(chg_fault_status == CHG_STATUS_WD_RST)) {
pr_info("%s: watchdog error status(0x%02x,%d)\n",
__func__, reg_data, chg_fault_status);
if (charger->is_charging) {
pr_info("%s: toggle charger\n", __func__);
s2mu004_enable_charger_switch(charger, false);
s2mu004_enable_charger_switch(charger, true);
}
}
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL0, &en_chg);
if (!(en_chg & 0x80))
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL0,
0x1 << EN_CHG_SHIFT, EN_CHG_MASK);
}
static int s2mu004_get_charging_health(struct s2mu004_charger_data *charger)
{
u8 ret;
union power_supply_propval value;
struct power_supply *psy;
if (charger->is_charging)
s2mu004_wdt_clear(charger);
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS0, &ret);
pr_info("[DEBUG] %s: S2MU004_CHG_STATUS0 0x%x\n", __func__, ret);
if (ret < 0)
return POWER_SUPPLY_HEALTH_UNKNOWN;
ret = (ret & (CHGIN_STATUS_MASK)) >> CHGIN_STATUS_SHIFT;
switch (ret) {
case 0x03:
case 0x05:
charger->ovp = false;
charger->unhealth_cnt = 0;
return POWER_SUPPLY_HEALTH_GOOD;
default:
break;
}
charger->unhealth_cnt++;
if (charger->unhealth_cnt < HEALTH_DEBOUNCE_CNT)
return POWER_SUPPLY_HEALTH_GOOD;
/* 005 need to check ovp & health count */
charger->unhealth_cnt = HEALTH_DEBOUNCE_CNT;
if (charger->ovp)
return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
psy = power_supply_get_by_name("battery");
if (!psy)
return -EINVAL;
ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE, &value);
if (ret < 0)
pr_err("%s: Fail to execute property\n", __func__);
if (value.intval == POWER_SUPPLY_TYPE_USB_PD)
return POWER_SUPPLY_HEALTH_UNDERVOLTAGE;
else
return POWER_SUPPLY_HEALTH_GOOD;
#if EN_TEST_READ
s2mu004_test_read(charger->i2c);
#endif
}
static int s2mu004_chg_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
int chg_curr, aicr;
struct s2mu004_charger_data *charger =
power_supply_get_drvdata(psy);
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = charger->is_charging ? 1 : 0;
break;
case POWER_SUPPLY_PROP_STATUS:
val->intval = s2mu004_get_charging_status(charger);
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = s2mu004_get_charging_health(charger);
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
val->intval = s2mu004_get_input_current_limit(charger);
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (charger->charging_current) {
aicr = s2mu004_get_input_current_limit(charger);
chg_curr = s2mu004_get_fast_charging_current(charger);
val->intval = MINVAL(aicr, chg_curr);
} else
val->intval = 0;
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
val->intval = s2mu004_get_fast_charging_current(charger);
break;
case POWER_SUPPLY_PROP_CURRENT_FULL:
val->intval = s2mu004_get_topoff_setting(charger);
break;
case POWER_SUPPLY_PROP_CHARGE_TYPE:
val->intval = s2mu004_get_charge_type(charger);
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
val->intval = s2mu004_get_regulation_voltage(charger);
break;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = s2mu004_get_batt_present(charger);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
val->intval = charger->is_charging;
break;
default:
return -EINVAL;
}
return 0;
}
static int s2mu004_chg_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct s2mu004_charger_data *charger = power_supply_get_drvdata(psy);
int buck_state = ENABLE;
union power_supply_propval value;
int ret;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
charger->status = val->intval;
break;
/* val->intval : type */
case POWER_SUPPLY_PROP_ONLINE:
charger->cable_type = val->intval;
if (charger->cable_type != POWER_SUPPLY_TYPE_OTG) {
if (charger->cable_type == POWER_SUPPLY_TYPE_BATTERY ||
charger->cable_type == POWER_SUPPLY_TYPE_UNKNOWN) {
pr_err("[DEBUG]%s:[BATT] Type Battery\n", __func__);
value.intval = 0;
} else {
#if ENABLE_MIVR
s2mu004_set_ivr_level(charger);
#endif
value.intval = 1;
}
psy = power_supply_get_by_name(charger->pdata->fuelgauge_name);
if (!psy)
return -EINVAL;
ret = power_supply_set_property(psy, POWER_SUPPLY_PROP_ENERGY_AVG, &value);
if (ret < 0)
pr_err("%s: Fail to execute property\n", __func__);
}
break;
case POWER_SUPPLY_PROP_CURRENT_MAX:
{
int input_current = val->intval;
s2mu004_set_input_current_limit(charger, input_current);
charger->input_current = input_current;
}
break;
case POWER_SUPPLY_PROP_CURRENT_AVG:
case POWER_SUPPLY_PROP_CURRENT_NOW:
pr_info("[DEBUG] %s: is_charging %d\n", __func__, charger->is_charging);
charger->charging_current = val->intval;
/* set charging current */
if (charger->is_charging)
s2mu004_set_fast_charging_current(charger, charger->charging_current);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
break;
case POWER_SUPPLY_PROP_CURRENT_FULL:
charger->topoff_current = val->intval;
s2mu004_set_topoff_current(charger, 1, val->intval);
break;
case POWER_SUPPLY_PROP_VOLTAGE_MAX:
pr_info("[DEBUG]%s: float voltage(%d)\n", __func__, val->intval);
charger->pdata->chg_float_voltage = val->intval;
s2mu004_set_regulation_voltage(charger,
charger->pdata->chg_float_voltage);
case POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL:
s2mu004_charger_otg_control(charger, val->intval);
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
charger->charge_mode = val->intval;
psy = power_supply_get_by_name("battery");
if (!psy)
return -EINVAL;
ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE, &value);
if (ret < 0)
pr_err("%s: Fail to execute property\n", __func__);
if (value.intval != POWER_SUPPLY_TYPE_OTG) {
switch (charger->charge_mode) {
case S2MU00X_BAT_CHG_MODE_BUCK_OFF:
buck_state = DISABLE;
case S2MU00X_BAT_CHG_MODE_CHARGING_OFF:
charger->is_charging = false;
break;
case S2MU00X_BAT_CHG_MODE_CHARGING:
charger->is_charging = true;
break;
}
value.intval = charger->is_charging;
psy = power_supply_get_by_name(charger->pdata->fuelgauge_name);
if (!psy)
return -EINVAL;
ret = power_supply_set_property(psy, POWER_SUPPLY_PROP_CHARGING_ENABLED, &value);
if (ret < 0)
pr_err("%s: Fail to execute property\n", __func__);
if (buck_state)
s2mu004_enable_charger_switch(charger, charger->is_charging);
else
s2mu004_set_buck(charger, buck_state);
} else {
pr_info("[DEBUG]%s: SKIP CHARGING CONTROL while OTG(%d)\n",
__func__, value.intval);
}
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
break;
case POWER_SUPPLY_PROP_INPUT_VOLTAGE_REGULATION:
if (val->intval) {
pr_debug("%s: Relieve VBUS2BAT\n", __func__);
s2mu004_write_reg(charger->i2c, 0x2F, 0x5D);
}
break;
case POWER_SUPPLY_PROP_FUELGAUGE_RESET:
s2mu004_write_reg(charger->i2c, 0x6F, 0xC4);
msleep(1000);
s2mu004_write_reg(charger->i2c, 0x6F, 0x04);
msleep(50);
pr_info("%s: reset fuelgauge when surge occur!\n", __func__);
break;
default:
return -EINVAL;
}
return 0;
}
static int s2mu004_otg_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct s2mu004_charger_data *charger = power_supply_get_drvdata(psy);
u8 reg;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = charger->otg_on;
break;
case POWER_SUPPLY_PROP_CHARGE_POWERED_OTG_CONTROL:
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS2, &reg);
pr_info("%s: S2MU004_CHG_STATUS2 : 0x%X\n", __func__, reg);
if ((reg & 0xE0) == 0x60)
val->intval = 1;
else
val->intval = 0;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_CTRL0, &reg);
pr_info("%s: S2MU004_CHG_CTRL0 : 0x%X\n", __func__, reg);
break;
default:
return -EINVAL;
}
return 0;
}
static int s2mu004_otg_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct s2mu004_charger_data *charger = power_supply_get_drvdata(psy);
union power_supply_propval value;
int ret;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
value.intval = val->intval;
pr_info("%s: OTG %s\n", __func__, value.intval > 0 ? "ON" : "OFF");
psy = power_supply_get_by_name(charger->pdata->charger_name);
if (!psy)
return -EINVAL;
ret = power_supply_set_property(psy, POWER_SUPPLY_PROP_CHARGE_OTG_CONTROL, &value);
if (ret < 0)
pr_err("%s: Fail to execute property\n", __func__);
power_supply_changed(charger->psy_otg);
break;
default:
return -EINVAL;
}
return 0;
}
static void s2mu004_charger_otg_vbus_work(struct work_struct *work)
{
struct s2mu004_charger_data *charger = container_of(work,
struct s2mu004_charger_data,
otg_vbus_work.work);
s2mu004_update_reg(charger->i2c, S2MU004_CHG_CTRL7, 0x2 << SET_VF_VBYP_SHIFT, SET_VF_VBYP_MASK);
}
#if EN_BAT_DET_IRQ
/* s2mu004 interrupt service routine */
static irqreturn_t s2mu004_det_bat_isr(int irq, void *data)
{
struct s2mu004_charger_data *charger = data;
u8 val;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS3, &val);
if ((val & DET_BAT_STATUS_MASK) == 0) {
s2mu004_enable_charger_switch(charger, 0);
pr_err("charger-off if battery removed\n");
}
return IRQ_HANDLED;
}
#endif
static irqreturn_t s2mu004_done_isr(int irq, void *data)
{
struct s2mu004_charger_data *charger = data;
u8 val;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS1, &val);
pr_info("%s , %02x\n", __func__, val);
if (val & (DONE_STATUS_MASK)) {
pr_err("add self chg done\n");
/* add chg done code here */
}
return IRQ_HANDLED;
}
static irqreturn_t s2mu004_chg_isr(int irq, void *data)
{
struct s2mu004_charger_data *charger = data;
union power_supply_propval value;
u8 val;
struct power_supply *psy;
int ret;
value.intval = POWER_SUPPLY_HEALTH_GOOD;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS0, &val);
pr_info("%s , %02x\n", __func__, val);
#if EN_OVP_IRQ
if ((val & CHGIN_STATUS_MASK) == (2 << CHGIN_STATUS_SHIFT)) {
charger->ovp = true;
pr_info("%s: OVP triggered\n", __func__);
value.intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
s2mu004_update_reg(charger->i2c, 0xBE, 0x10, 0x10);
} else if ((val & CHGIN_STATUS_MASK) == (3 << CHGIN_STATUS_SHIFT) ||
(val & CHGIN_STATUS_MASK) == (5 << CHGIN_STATUS_SHIFT)) {
dev_dbg(&charger->i2c->dev, "%s: Vbus status 0x%x\n", __func__, val);
charger->unhealth_cnt = HEALTH_DEBOUNCE_CNT;
charger->ovp = false;
pr_info("%s: recover from OVP\n", __func__);
value.intval = POWER_SUPPLY_HEALTH_GOOD;
s2mu004_update_reg(charger->i2c, 0xBE, 0x00, 0x10);
}
psy = power_supply_get_by_name("battery");
if (!psy)
return -EINVAL;
ret = power_supply_set_property(psy, POWER_SUPPLY_PROP_HEALTH, &value);
if (ret < 0)
pr_err("%s: Fail to execute property\n", __func__);
#endif
return IRQ_HANDLED;
}
static irqreturn_t s2mu004_event_isr(int irq, void *data)
{
struct s2mu004_charger_data *charger = data;
u8 val;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS0, &val);
pr_info("%s , %02x\n", __func__, val);
return IRQ_HANDLED;
}
static irqreturn_t s2mu004_ovp_isr(int irq, void *data)
{
struct s2mu004_charger_data *charger = data;
u8 val;
s2mu004_read_reg(charger->i2c, S2MU004_CHG_STATUS0, &val);
pr_info("%s ovp %02x\n", __func__, val);
return IRQ_HANDLED;
}
static int s2mu004_charger_parse_dt(struct device *dev,
struct s2mu004_charger_platform_data *pdata)
{
struct device_node *np = of_find_node_by_name(NULL, "s2mu004-charger");
int ret = 0;
if (!np) {
pr_err("%s np NULL(s2mu004-charger)\n", __func__);
} else {
ret = of_property_read_u32(np, "battery,chg_switching_freq",
&pdata->chg_switching_freq);
if (ret < 0)
pr_info("%s: Charger switching FRQ is Empty\n", __func__);
}
np = of_find_node_by_name(NULL, "battery");
if (!np) {
pr_err("%s np NULL\n", __func__);
} else {
int len;
unsigned int i;
const u32 *p;
ret = of_property_read_string(np,
"battery,fuelgauge_name",
(char const **)&pdata->fuelgauge_name);
if (ret < 0)
pr_info("%s: Fuel-gauge name is Empty\n", __func__);
ret = of_property_read_u32(np, "battery,chg_float_voltage",
&pdata->chg_float_voltage);
if (ret) {
pr_info("%s: battery,chg_float_voltage is Empty\n", __func__);
pdata->chg_float_voltage = 4200;
}
pr_info("%s: battery,chg_float_voltage is %d\n",
__func__, pdata->chg_float_voltage);
pdata->chg_eoc_dualpath = of_property_read_bool(np,
"battery,chg_eoc_dualpath");
p = of_get_property(np, "battery,input_current_limit", &len);
if (!p)
return 1;
len = len / sizeof(u32);
pdata->charging_current =
kzalloc(sizeof(s2mu00x_charging_current_t) * len,
GFP_KERNEL);
for (i = 0; i < len; i++) {
ret = of_property_read_u32_index(np,
"battery,input_current_limit", i,
&pdata->charging_current[i].input_current_limit);
if (ret)
pr_info("%s : Input_current_limit is Empty\n",
__func__);
ret = of_property_read_u32_index(np,
"battery,fast_charging_current", i,
&pdata->charging_current[i].fast_charging_current);
if (ret)
pr_info("%s : Fast charging current is Empty\n",
__func__);
ret = of_property_read_u32_index(np,
"battery,full_check_current", i,
&pdata->charging_current[i].full_check_current);
if (ret)
pr_info("%s : Full check current is Empty\n",
__func__);
}
}
pr_info("%s DT file parsed succesfully, %d\n", __func__, ret);
return ret;
}
/* if need to set s2mu004 pdata */
static const struct of_device_id s2mu004_charger_match_table[] = {
{ .compatible = "samsung,s2mu004-charger",},
{},
};
static int s2mu004_charger_probe(struct platform_device *pdev)
{
struct s2mu004_dev *s2mu004 = dev_get_drvdata(pdev->dev.parent);
struct s2mu004_platform_data *pdata = dev_get_platdata(s2mu004->dev);
struct s2mu004_charger_data *charger;
struct power_supply_config psy_cfg = {};
int ret = 0;
pr_info("%s:[BATT] S2MU004 Charger driver probe\n", __func__);
charger = kzalloc(sizeof(*charger), GFP_KERNEL);
if (!charger)
return -ENOMEM;
mutex_init(&charger->charger_mutex);
charger->otg_on = false;
charger->dev = &pdev->dev;
charger->i2c = s2mu004->i2c;
charger->pdata = devm_kzalloc(&pdev->dev, sizeof(*(charger->pdata)),
GFP_KERNEL);
if (!charger->pdata) {
ret = -ENOMEM;
goto err_parse_dt_nomem;
}
ret = s2mu004_charger_parse_dt(&pdev->dev, charger->pdata);
if (ret < 0)
goto err_parse_dt;
platform_set_drvdata(pdev, charger);
if (charger->pdata->charger_name == NULL)
charger->pdata->charger_name = "s2mu004-charger";
if (charger->pdata->fuelgauge_name == NULL)
charger->pdata->fuelgauge_name = "s2mu004-fuelgauge";
charger->psy_chg_desc.name = charger->pdata->charger_name;
charger->psy_chg_desc.type = POWER_SUPPLY_TYPE_UNKNOWN;
charger->psy_chg_desc.get_property = s2mu004_chg_get_property;
charger->psy_chg_desc.set_property = s2mu004_chg_set_property;
charger->psy_chg_desc.properties = s2mu004_charger_props;
charger->psy_chg_desc.num_properties = ARRAY_SIZE(s2mu004_charger_props);
charger->psy_otg_desc.name = "otg";
charger->psy_otg_desc.type = POWER_SUPPLY_TYPE_UNKNOWN;
charger->psy_otg_desc.get_property = s2mu004_otg_get_property;
charger->psy_otg_desc.set_property = s2mu004_otg_set_property;
charger->psy_otg_desc.properties = s2mu004_otg_props;
charger->psy_otg_desc.num_properties = ARRAY_SIZE(s2mu004_otg_props);
s2mu004_chg_init(charger);
charger->input_current = s2mu004_get_input_current_limit(charger);
charger->charging_current = s2mu004_get_fast_charging_current(charger);
psy_cfg.drv_data = charger;
psy_cfg.supplied_to = s2mu004_supplied_to;
psy_cfg.num_supplicants = ARRAY_SIZE(s2mu004_supplied_to);
charger->psy_chg = power_supply_register(&pdev->dev, &charger->psy_chg_desc, &psy_cfg);
if (IS_ERR(charger->psy_chg)) {
pr_err("%s: Failed to Register psy_chg\n", __func__);
ret = PTR_ERR(charger->psy_chg);
goto err_power_supply_register;
}
charger->psy_otg = power_supply_register(&pdev->dev, &charger->psy_otg_desc, &psy_cfg);
if (IS_ERR(charger->psy_otg)) {
pr_err("%s: Failed to Register psy_otg\n", __func__);
ret = PTR_ERR(charger->psy_otg);
goto err_power_supply_register_otg;
}
charger->charger_wqueue = create_singlethread_workqueue("charger-wq");
if (!charger->charger_wqueue) {
pr_info("%s: failed to create wq.\n", __func__);
ret = -ESRCH;
goto err_create_wq;
}
/*
* irq request
* if you need to add irq , please refer below code.
*/
charger->irq_sys = pdata->irq_base + S2MU004_CHG1_IRQ_SYS;
ret = request_threaded_irq(charger->irq_sys, NULL,
s2mu004_ovp_isr, 0, "sys-irq", charger);
if (ret < 0) {
dev_err(s2mu004->dev, "%s: Fail to request SYS in IRQ: %d: %d\n",
__func__, charger->irq_sys, ret);
goto err_reg_irq;
}
#if EN_BAT_DET_IRQ
charger->irq_det_bat = pdata->irq_base + S2MU004_CHG2_IRQ_DET_BAT;
ret = request_threaded_irq(charger->irq_det_bat, NULL,
s2mu004_det_bat_isr, 0, "det_bat-irq", charger);
if (ret < 0) {
dev_err(s2mu004->dev, "%s: Fail to request DET_BAT in IRQ: %d: %d\n",
__func__, charger->irq_det_bat, ret);
goto err_reg_irq;
}
#endif
charger->irq_chgin = pdata->irq_base + S2MU004_CHG1_IRQ_CHGIN;
ret = request_threaded_irq(charger->irq_chgin, NULL,
s2mu004_chg_isr, 0, "chgin-irq", charger);
if (ret < 0) {
dev_err(s2mu004->dev, "%s: Fail to request CHGIN in IRQ: %d: %d\n",
__func__, charger->irq_chgin, ret);
goto err_reg_irq;
}
charger->irq_rst = pdata->irq_base + S2MU004_CHG1_IRQ_CHG_RSTART;
ret = request_threaded_irq(charger->irq_rst, NULL,
s2mu004_chg_isr, 0, "restart-irq", charger);
if (ret < 0) {
dev_err(s2mu004->dev, "%s: Fail to request CHG_Restart in IRQ: %d: %d\n",
__func__, charger->irq_rst, ret);
goto err_reg_irq;
}
charger->irq_done = pdata->irq_base + S2MU004_CHG1_IRQ_DONE;
ret = request_threaded_irq(charger->irq_done, NULL,
s2mu004_done_isr, 0, "done-irq", charger);
if (ret < 0) {
dev_err(s2mu004->dev, "%s: Fail to request DONE in IRQ: %d: %d\n",
__func__, charger->irq_done, ret);
goto err_reg_irq;
}
charger->irq_chg_fault = pdata->irq_base + S2MU004_CHG1_IRQ_CHG_Fault;
ret = request_threaded_irq(charger->irq_chg_fault, NULL,
s2mu004_event_isr, 0, "chg_fault-irq", charger);
if (ret < 0) {
dev_err(s2mu004->dev, "%s: Fail to request CHG_Fault in IRQ: %d: %d\n",
__func__, charger->irq_chg_fault, ret);
goto err_reg_irq;
}
INIT_DELAYED_WORK(&charger->otg_vbus_work, s2mu004_charger_otg_vbus_work);
#if EN_TEST_READ
s2mu004_test_read(charger->i2c);
#endif
pr_info("%s:[BATT] S2MU004 charger driver loaded OK\n", __func__);
return 0;
err_reg_irq:
destroy_workqueue(charger->charger_wqueue);
err_create_wq:
power_supply_unregister(charger->psy_otg);
err_power_supply_register_otg:
power_supply_unregister(charger->psy_chg);
err_power_supply_register:
err_parse_dt:
err_parse_dt_nomem:
mutex_destroy(&charger->charger_mutex);
kfree(charger);
return ret;
}
static int s2mu004_charger_remove(struct platform_device *pdev)
{
struct s2mu004_charger_data *charger =
platform_get_drvdata(pdev);
power_supply_unregister(charger->psy_chg);
mutex_destroy(&charger->charger_mutex);
kfree(charger);
return 0;
}
#if defined CONFIG_PM
static int s2mu004_charger_suspend(struct device *dev)
{
return 0;
}
static int s2mu004_charger_resume(struct device *dev)
{
return 0;
}
#else
#define s2mu004_charger_suspend NULL
#define s2mu004_charger_resume NULL
#endif
static void s2mu004_charger_shutdown(struct device *dev)
{
pr_info("%s: S2MU004 Charger driver shutdown\n", __func__);
}
static SIMPLE_DEV_PM_OPS(s2mu004_charger_pm_ops, s2mu004_charger_suspend,
s2mu004_charger_resume);
static struct platform_driver s2mu004_charger_driver = {
.driver = {
.name = "s2mu004-charger",
.owner = THIS_MODULE,
.of_match_table = s2mu004_charger_match_table,
.pm = &s2mu004_charger_pm_ops,
.shutdown = s2mu004_charger_shutdown,
},
.probe = s2mu004_charger_probe,
.remove = s2mu004_charger_remove,
};
static int __init s2mu004_charger_init(void)
{
int ret = 0;
ret = platform_driver_register(&s2mu004_charger_driver);
return ret;
}
module_init(s2mu004_charger_init);
static void __exit s2mu004_charger_exit(void)
{
platform_driver_unregister(&s2mu004_charger_driver);
}
module_exit(s2mu004_charger_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Samsung Electronics");
MODULE_DESCRIPTION("Charger driver for S2MU004");
Reference in New Issue View Git Blame Copy Permalink