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kernel_samsung_a34x-permissive/drivers/battery/charger/sm5451_charger/sm5451_charger.c

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Import A346BXXU1AWB9 kernel source Android 13
2024-04-28 06:49:01 -07:00
/*
* sm5451_charger.c - SM5451 Charger device driver for SAMSUNG platform
*
* Copyright (C) 2022 SiliconMitus Co.Ltd
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/slab.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/power_supply.h>
#if defined(CONFIG_OF)
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pm_runtime.h>
#endif /* CONFIG_OF */
#if IS_ENABLED(CONFIG_BATTERY_SAMSUNG)
#include "../../common/sec_charging_common.h"
#include "../../common/sec_direct_charger.h"
#endif
#include "sm5451_charger.h"
#if IS_ENABLED(CONFIG_SEC_ABC)
#include <linux/sti/abc_common.h>
#endif
#define SM5451_DC_VERSION "VK2"
static u32 SM5451_freq_val[] = {
200, 375, 500, 750, 1000, 1250, 1500
};
static int sm5451_read_reg(struct sm5451_charger *sm5451, u8 reg, u8 *dest)
{
int cnt, ret;
for (cnt = 0; cnt < 3; ++cnt) {
ret = i2c_smbus_read_byte_data(sm5451->i2c, reg);
if (ret < 0)
dev_err(sm5451->dev, "%s: fail to i2c_read(ret=%d)\n", __func__, ret);
else
break;
if (cnt == 0)
msleep(30);
}
if (ret < 0) {
#if IS_ENABLED(CONFIG_SEC_ABC) && !defined(CONFIG_SEC_FACTORY)
sec_abc_send_event("MODULE=battery@WARN=dc_i2c_fail");
#endif
return ret;
} else {
*dest = (ret & 0xff);
}
return 0;
}
int sm5451_bulk_read(struct sm5451_charger *sm5451, u8 reg, int count, u8 *buf)
{
int cnt, ret;
for (cnt = 0; cnt < 3; ++cnt) {
ret = i2c_smbus_read_i2c_block_data(sm5451->i2c, reg, count, buf);
if (ret < 0)
dev_err(sm5451->dev, "%s: fail to i2c_bulk_read(ret=%d)\n", __func__, ret);
else
break;
if (cnt == 0)
msleep(30);
}
#if IS_ENABLED(CONFIG_SEC_ABC) && !defined(CONFIG_SEC_FACTORY)
if (ret < 0)
sec_abc_send_event("MODULE=battery@WARN=dc_i2c_fail");
#endif
return ret;
}
static int sm5451_write_reg(struct sm5451_charger *sm5451, u8 reg, u8 value)
{
int cnt, ret;
for (cnt = 0; cnt < 3; ++cnt) {
ret = i2c_smbus_write_byte_data(sm5451->i2c, reg, value);
if (ret < 0)
dev_err(sm5451->dev, "%s: fail to i2c_write(ret=%d)\n", __func__, ret);
else
break;
if (cnt == 0)
msleep(30);
}
#if IS_ENABLED(CONFIG_SEC_ABC) && !defined(CONFIG_SEC_FACTORY)
if (ret < 0)
sec_abc_send_event("MODULE=battery@WARN=dc_i2c_fail");
#endif
return ret;
}
static int sm5451_update_reg(struct sm5451_charger *sm5451, u8 reg,
u8 val, u8 mask, u8 pos)
{
int ret;
u8 old_val;
mutex_lock(&sm5451->i2c_lock);
ret = sm5451_read_reg(sm5451, reg, &old_val);
if (ret == 0) {
u8 new_val = (val & mask) << pos | (old_val & ~(mask << pos));
ret = sm5451_write_reg(sm5451, reg, new_val);
}
mutex_unlock(&sm5451->i2c_lock);
return ret;
}
static u8 sm5451_get_flag_status(struct sm5451_charger *sm5451, u8 flag_addr)
{
u8 reg;
/* read twice to get correct value */
mutex_lock(&sm5451->i2c_lock);
sm5451_read_reg(sm5451, flag_addr, &reg);
sm5451_read_reg(sm5451, flag_addr, &reg);
mutex_unlock(&sm5451->i2c_lock);
return reg;
}
static u32 sm5451_get_vbatreg(struct sm5451_charger *sm5451)
{
u8 reg;
u32 vbatovp, offset;
sm5451_read_reg(sm5451, SM5451_REG_VBAT_OVP, &reg);
vbatovp = 4000 + ((reg & 0x7F) * 10);
sm5451_read_reg(sm5451, SM5451_REG_REG1, &reg);
offset = ((reg & 0x3) * 50) + 50;
dev_info(sm5451->dev, "%s: vbatovp=%d, offset=%d\n",
__func__, vbatovp, offset);
return (vbatovp - offset);
}
static int sm5451_set_vbatreg(struct sm5451_charger *sm5451, u32 vbatreg)
{
u8 reg;
u32 vbatovp, offset;
sm5451_read_reg(sm5451, SM5451_REG_REG1, &reg);
offset = ((reg & 0x3) * 50) + 50;
vbatovp = vbatreg + offset;
if (vbatovp < 4000)
reg = 0;
else
reg = (vbatovp - 4000) / 10;
dev_info(sm5451->dev, "%s: vbatovp=%d, offset=%d reg=0x%x\n",
__func__, vbatovp, offset, reg);
return sm5451_update_reg(sm5451, SM5451_REG_VBAT_OVP, reg, 0x7F, 0);
}
static u32 sm5451_get_ibuslim(struct sm5451_charger *sm5451)
{
u8 reg;
u32 ibusocp, offset;
sm5451_read_reg(sm5451, SM5451_REG_IBUS_PROT, &reg);
ibusocp = 500 + ((reg & 0x3F) * 100);
sm5451_read_reg(sm5451, SM5451_REG_CNTL5, &reg);
offset = ((reg & 0x3) * 100) + 100;
dev_info(sm5451->dev, "%s: ibusocp=%d, offset=%d\n",
__func__, ibusocp, offset);
return ibusocp - offset;
}
static int sm5451_set_ibuslim(struct sm5451_charger *sm5451, u32 ibuslim)
{
u8 reg;
u32 ibusocp, offset;
sm5451_read_reg(sm5451, SM5451_REG_CNTL5, &reg);
offset = ((reg & 0x3) * 100) + 100;
ibusocp = ibuslim + offset;
reg = (ibusocp - 500) / 100;
dev_info(sm5451->dev, "%s: ibusocp=%d, offset=%d reg=0x%x\n",
__func__, ibusocp, offset, reg);
return sm5451_update_reg(sm5451, SM5451_REG_IBUS_PROT, reg, 0x3F, 0);
}
static int sm5451_set_freq(struct sm5451_charger *sm5451, u8 freq)
{
return sm5451_update_reg(sm5451, SM5451_REG_CNTL2, freq, 0x7, 5);
}
static int sm5451_set_op_mode(struct sm5451_charger *sm5451, u8 op_mode)
{
return sm5451_update_reg(sm5451, SM5451_REG_CNTL1, op_mode, 0x7, 4);
}
static u8 sm5451_get_op_mode(struct sm5451_charger *sm5451)
{
u8 reg;
sm5451_read_reg(sm5451, SM5451_REG_CNTL1, &reg);
return (reg >> 4) & 0x7;
}
static int sm5451_set_wdt_timer(struct sm5451_charger *sm5451, u8 tmr)
{
return sm5451_update_reg(sm5451, SM5451_REG_CNTL1, tmr, 0x7, 0);
}
static u8 sm5451_get_wdt_timer(struct sm5451_charger *sm5451)
{
u8 reg = 0x0;
sm5451_read_reg(sm5451, SM5451_REG_CNTL1, &reg);
return reg & 0x7;
}
static int sm5451_kick_wdt(struct sm5451_charger *sm5451)
{
return sm5451_update_reg(sm5451, SM5451_REG_CNTL2, 0x1, 0x1, 0);
}
static int sm5451_set_adcmode(struct sm5451_charger *sm5451, u8 mode)
{
return sm5451_update_reg(sm5451, SM5451_REG_ADC_CNTL, mode, 0x1, 6);
}
static int sm5451_enable_adc(struct sm5451_charger *sm5451, bool enable)
{
return sm5451_update_reg(sm5451, SM5451_REG_ADC_CNTL, enable, 0x1, 7);
}
static int sm5451_enable_adc_oneshot(struct sm5451_charger *sm5451, u8 enable)
{
int ret, cnt;
u8 reg;
if (enable) {
for (cnt = 0; cnt < 3; ++cnt) {
ret = sm5451_write_reg(sm5451, SM5451_REG_ADC_CNTL, 0xC0);
/* ADC update time */
msleep(25);
sm5451_read_reg(sm5451, SM5451_REG_FLAG3, &reg);
if ((reg & SM5451_FLAG3_ADCDONE) == 0)
dev_info(sm5451->dev, "%s: fail to adc done(FLAG3=0x%02X)\n", __func__, reg);
else
break;
}
} else {
msleep(30);
ret = sm5451_write_reg(sm5451, SM5451_REG_ADC_CNTL, 0x0);
}
return ret;
}
static int sm5451_get_enadc(struct sm5451_charger *sm5451)
{
u8 reg = 0x0;
sm5451_read_reg(sm5451, SM5451_REG_ADC_CNTL, &reg);
return (reg >> 7) & 0x1;
}
static int sm5451_sw_reset(struct sm5451_charger *sm5451)
{
u8 i, reg;
sm5451_update_reg(sm5451, SM5451_REG_CNTL1, 1, 0x1, 7); /* Do SW Reset */
for (i = 0; i < 0xff; ++i) {
usleep_range(1000, 2000);
sm5451_read_reg(sm5451, SM5451_REG_CNTL1, &reg);
if (!((reg >> 7) & 0x1))
break;
}
if (i == 0xff) {
dev_err(sm5451->dev, "%s: didn't clear reset bit\n", __func__);
return -EBUSY;
}
return 0;
}
static u8 sm5451_get_reverse_boost_ocp(struct sm5451_charger *sm5451)
{
u8 reg, op_mode;
u8 revbsocp = 0;
op_mode = sm5451_get_op_mode(sm5451);
if (op_mode == OP_MODE_INIT) {
sm5451_read_reg(sm5451, SM5451_REG_FLAG4, &reg);
dev_info(sm5451->dev, "%s: FLAG4=0x%x\n", __func__, reg);
if (reg & SM5451_FLAG4_IBUSOCP_RVS) {
revbsocp = 1;
dev_err(sm5451->dev, "%s: detect reverse_boost_ocp\n", __func__);
}
}
return revbsocp;
}
static void sm5451_init_reg_param(struct sm5451_charger *sm5451)
{
sm5451_set_wdt_timer(sm5451, WDT_TIMER_S_40);
sm5451_set_freq(sm5451, sm5451->pdata->freq); /* FREQ : 500kHz */
sm5451_update_reg(sm5451, SM5451_REG_IBUS_PROT, 0x1, 0x1, 7); /* IBUSUCP = on */
sm5451_write_reg(sm5451, SM5451_REG_VBUSOVP, 0xC6); /* VBUS_OVP=11V */
sm5451_write_reg(sm5451, SM5451_REG_IBAT_OCP, 0x7C); /* IBATOCP = off */
sm5451_write_reg(sm5451, SM5451_REG_CNTL3, 0xA3); /* RLTVOVP = off, RLTVUVP = 1.01x */
sm5451_write_reg(sm5451, SM5451_REG_CNTL4, 0x00); /* VDSQRBP = off */
sm5451_write_reg(sm5451, SM5451_REG_IBATOCP_DG, 0x88); /* Deglitch for IBATOCP & IBUSOCP = 8ms */
sm5451_write_reg(sm5451, SM5451_REG_VDSQRB_DG, 0x05); /* Deglitch for VDSQRB = 200ms */
sm5451_write_reg(sm5451, SM5451_REG_CNTL5, 0x3F); /* IBUSOCP_RVS = on, threshold = 4.5A */
if (sm5451->pdata->en_vbatreg)
sm5451_write_reg(sm5451, SM5451_REG_REG1, 0x07); /* IBATREG = off, VBATREG = VBATOVP - 200mV */
else
sm5451_write_reg(sm5451, SM5451_REG_REG1, 0x03); /* IBATOCP & IBATREG & VBATREG = off */
if (sm5451->pdata->x2bat_mode) {
if (sm5451->chip_id == SM5451_SUB)
sm5451_write_reg(sm5451, SM5451_REG_REG1, 0x07); /* IBATREG = off, VBATREG = VBATOVP - 200mV */
} else {
if (sm5451->chip_id == SM5451_SUB)
sm5451_update_reg(sm5451, SM5451_REG_IBUS_PROT, 0x1, 0x1, 6); /* IBUSUCP = 250mA */
}
}
static struct sm_dc_info *select_sm_dc_info(struct sm5451_charger *sm5451)
{
if (sm5451->pdata->x2bat_mode)
return sm5451->x2bat_dc;
else
return sm5451->pps_dc;
}
static int sm5451_get_vnow(struct sm5451_charger *sm5451)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
union power_supply_propval value = {0, };
int ret;
if (sm5451->pdata->en_vbatreg)
return 0;
value.intval = SEC_BATTERY_VOLTAGE_MV;
ret = psy_do_property(sm5451->pdata->battery.fuelgauge_name, get,
POWER_SUPPLY_PROP_VOLTAGE_NOW, value);
if (ret < 0) {
dev_err(sm5451->dev, "%s: cannot get vnow from fg\n", __func__);
return -EINVAL;
}
pr_info("%s %s: vnow=%dmV, target_vbat=%dmV\n", sm_dc->name,
__func__, value.intval, sm_dc->target_vbat);
return value.intval;
}
static int sm5451_convert_adc(struct sm5451_charger *sm5451, u8 index)
{
u8 regs[4] = {0x0, };
u8 ret = 0x0;
int adc, cnt;
/* User binary only check ADC block during CHG-ON status and Factory binary/Dual Battery feature check ADC block all the time */
#if !defined(CONFIG_SEC_FACTORY) && !defined(CONFIG_DUAL_BATTERY)
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
if (sm_dc_get_current_state(sm_dc) < SM_DC_CHECK_VBAT
&& !(sm5451->rev_boost) && (sm_dc->chip_id != SM5451_SUB) && !(sm5451->force_adc_on)) {
/* Didn't worked ADC block during on CHG-OFF status */
return 0;
}
#endif
for (cnt = 0; cnt < 2; ++cnt) {
if (sm5451_get_enadc(sm5451) == 0)
sm5451_enable_adc_oneshot(sm5451, 1);
switch (index) {
case SM5451_ADC_THEM: /* unit - mV */
sm5451_bulk_read(sm5451, SM5451_REG_THEM_ADC_H, 2, regs);
adc = (((int)(regs[0] & 0x0F) << 8) + regs[1] + 1) >> 1;
break;
case SM5451_ADC_TDIE: /* unit - C */
sm5451_read_reg(sm5451, SM5451_REG_TDIE_ADC, regs);
adc = -40 + regs[0];
break;
case SM5451_ADC_VBUS:
sm5451_bulk_read(sm5451, SM5451_REG_VBUS_ADC_H, 2, regs);
adc = (((int)(regs[0] & 0x0F) << 8) + regs[1]) * 4;
break;
case SM5451_ADC_IBUS:
sm5451_bulk_read(sm5451, SM5451_REG_IBUS_ADC_H, 2, regs);
adc = (((int)(regs[0] & 0x0F) << 8) + regs[1]) * 2;
break;
case SM5451_ADC_VBAT:
sm5451_bulk_read(sm5451, SM5451_REG_VBAT_ADC_H, 2, regs);
adc = (((int)(regs[0] & 0x0F) << 8) + regs[1]) * 2;
break;
case SM5451_ADC_IBAT:
sm5451_bulk_read(sm5451, SM5451_REG_IBAT_ADC_H, 2, regs);
adc = (((int)(regs[0] & 0x0F) << 8) + regs[1]) * 2;
break;
default:
adc = 0;
}
/* prevent for reset of register */
ret = sm5451_get_wdt_timer(sm5451);
if (ret != WDT_TIMER_S_40) {
dev_err(sm5451->dev, "%s: detected REG Reset condition(ret=0x%x)\n", __func__, ret);
sm5451_init_reg_param(sm5451);
} else {
break;
}
}
dev_info(sm5451->dev, "%s: index(%d)=[0x%02X,0x%02X], adc=%d\n",
__func__, index, regs[0], regs[1], adc);
return adc;
}
static int sm5451_set_adc_mode(struct i2c_client *i2c, u8 mode)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
switch (mode) {
case SM_DC_ADC_MODE_ONESHOT:
/* covered by continuous mode */
case SM_DC_ADC_MODE_CONTINUOUS:
/* SM5451 continuous mode reflash time : 200ms */
sm5451_set_adcmode(sm5451, 0);
sm5451_enable_adc(sm5451, 1);
break;
case SM_DC_ADC_MODE_OFF:
default:
sm5451_set_adcmode(sm5451, 0);
sm5451_enable_adc(sm5451, 0);
break;
}
return 0;
}
static void sm5451_print_regmap(struct sm5451_charger *sm5451)
{
u8 print_reg_num, regs[64] = {0x0, };
char temp_buf[128] = {0,};
char reg_addr[16] = {0x0C, 0x0E, 0x10, 0x11, 0x60, 0x61, 0x62, 0x64, };
u8 reg_data;
int i;
print_reg_num = SM5451_REG_FLAG1 - SM5451_REG_CNTL1;
sm5451_bulk_read(sm5451, SM5451_REG_CNTL1, print_reg_num, regs);
for (i = 0; i < print_reg_num; ++i)
sprintf(temp_buf+strlen(temp_buf), "0x%02X[0x%02X],", SM5451_REG_CNTL1 + i, regs[i]);
pr_info("sm5451-charger: regmap: %s\n", temp_buf);
memset(temp_buf, 0x0, sizeof(temp_buf));
print_reg_num = 8;
for (i = 0; i < print_reg_num; ++i) {
sm5451_read_reg(sm5451, reg_addr[i], &reg_data);
sprintf(temp_buf+strlen(temp_buf), "0x%02X[0x%02X],", reg_addr[i], reg_data);
}
pr_info("sm5451-charger: regmap: %s\n", temp_buf);
memset(temp_buf, 0x0, sizeof(temp_buf));
}
static int sm5451_reverse_boost_enable(struct sm5451_charger *sm5451, bool enable)
{
u8 i, flag1, flag2, flag3, flag4;
if (enable && !sm5451->rev_boost) {
for (i = 0; i < 2; ++i) {
flag3 = sm5451_get_flag_status(sm5451, SM5451_REG_FLAG3);
dev_info(sm5451->dev, "%s: FLAG3:0x%x i=%d\n", __func__, flag3, i);
if (flag3 & (SM5451_FLAG3_VBUSUVLO | SM5451_FLAG3_VBUSPOK))
msleep(20);
else
break;
}
sm5451_set_op_mode(sm5451, OP_MODE_REV_BOOST);
for (i = 0; i < 12; ++i) {
usleep_range(10000, 11000);
sm5451_read_reg(sm5451, SM5451_REG_FLAG1, &flag1);
sm5451_read_reg(sm5451, SM5451_REG_FLAG2, &flag2);
sm5451_read_reg(sm5451, SM5451_REG_FLAG3, &flag3);
sm5451_read_reg(sm5451, SM5451_REG_FLAG4, &flag4);
dev_info(sm5451->dev, "%s: FLAG:0x%x:0x%x:0x%x:0x%x i=%d\n",
__func__, flag1, flag2, flag3, flag4, i);
if (flag4 & SM5451_FLAG4_RVSRDY)
break;
}
if (i == 12) {
dev_err(sm5451->dev, "%s: fail to reverse boost enable\n", __func__);
sm5451_set_op_mode(sm5451, OP_MODE_INIT);
sm5451->rev_boost = false;
return -EINVAL;
}
sm5451_set_adc_mode(sm5451->i2c, SM_DC_ADC_MODE_CONTINUOUS);
dev_info(sm5451->dev, "%s: ON\n", __func__);
} else if (!enable) {
sm5451_set_op_mode(sm5451, OP_MODE_INIT);
sm5451_set_adc_mode(sm5451->i2c, SM_DC_ADC_MODE_OFF);
dev_info(sm5451->dev, "%s: OFF\n", __func__);
}
sm5451->rev_boost = enable;
return 0;
}
static bool sm5451_check_charging_enable(struct sm5451_charger *sm5451)
{
u8 reg;
reg = sm5451_get_op_mode(sm5451);
if (reg == OP_MODE_FW_BOOST || reg == OP_MODE_FW_BYPASS)
return true;
else
return false;
}
static int sm5451_prechg_enable(struct sm5451_charger *sm5451, bool enable)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
u8 reg, i;
if (enable) {
if (state > SM_DC_EOC || sm5451_check_charging_enable(sm5451)) {
dev_info(sm5451->dev, "%s: charging state (state=%d)\n", __func__, state);
} else {
dev_info(sm5451->dev, "%s: ON\n", __func__);
for (i = 0; i < 2; ++i) {
sm5451_write_reg(sm5451, SM5451_REG_PRECHG_MODE, 0xEA);
sm5451_write_reg(sm5451, SM5451_REG_PRECHG_MODE, 0xAE);
sm5451_write_reg(sm5451, SM5451_REG_CTRL_STM_0, 0xB0);
sm5451_write_reg(sm5451, SM5451_REG_CTRL_STM_3, 0x80);
sm5451_write_reg(sm5451, SM5451_REG_CTRL_STM_5, 0x08);
sm5451_write_reg(sm5451, SM5451_REG_CTRL_STM_2, 0x08);
sm5451_read_reg(sm5451, SM5451_REG_CTRL_STM_0, &reg);
if (reg != 0xB0)
sm5451_write_reg(sm5451, SM5451_REG_PRECHG_MODE, 0x00);
else
break;
dev_info(sm5451->dev, "%s: fail to pre-charging\n", __func__);
}
usleep_range(10000, 11000);
}
} else {
dev_info(sm5451->dev, "%s: OFF\n", __func__);
sm5451_write_reg(sm5451, SM5451_REG_PRECHG_MODE, 0x00);
}
return 0;
}
static int sm5451_start_charging(struct sm5451_charger *sm5451)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
struct power_supply *psy_dc_sub = NULL;
struct sm5451_charger *sm5451_sub = NULL;
int ret;
if (sm5451->cable_online < 1) {
dev_err(sm5451->dev, "%s: can't detect valid cable connection(online=%d)\n",
__func__, sm5451->cable_online);
return -ENODEV;
}
/* Check dc mode */
if (sm_dc->chip_id != SM5451_SUB) {
psy_dc_sub = power_supply_get_by_name("sm5451-charger-sub");
if (!psy_dc_sub) {
sm_dc->i2c_sub = NULL;
dev_info(sm5451->dev, "%s: start single dc mode\n", __func__);
} else {
sm5451_sub = power_supply_get_drvdata(psy_dc_sub);
sm_dc->i2c_sub = sm5451_sub->i2c;
dev_info(sm5451->dev, "%s: start dual dc mode\n", __func__);
}
} else {
dev_info(sm5451->dev, "%s: unable to start sub dc standalone\n", __func__);
return -EINVAL;
}
if (state < SM_DC_CHECK_VBAT) {
dev_info(sm5451->dev, "%s: charging off state (state=%d)\n", __func__, state);
ret = sm5451_sw_reset(sm5451);
if (ret < 0) {
dev_err(sm5451->dev, "%s: fail to sw reset(ret=%d)\n", __func__, ret);
return ret;
}
sm5451_init_reg_param(sm5451);
sm5451_prechg_enable(sm5451, 1);
if (sm5451_sub) {
ret = sm5451_sw_reset(sm5451_sub);
if (ret < 0) {
dev_err(sm5451_sub->dev, "%s: fail to sw reset(ret=%d)\n", __func__, ret);
return ret;
}
sm5451_init_reg_param(sm5451_sub);
sm5451_prechg_enable(sm5451_sub, 1);
}
} else if (state == SM_DC_CV_MAN) {
dev_info(sm5451->dev, "%s: skip start charging (state=%d)\n", __func__, state);
return 0;
}
ret = sm_dc_start_charging(sm_dc);
if (ret < 0) {
dev_err(sm5451->dev, "%s: fail to start direct-charging\n", __func__);
return ret;
}
__pm_stay_awake(sm5451->chg_ws);
return 0;
}
static int sm5451_stop_charging(struct sm5451_charger *sm5451)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
msleep(30);
sm_dc_stop_charging(sm_dc);
__pm_relax(sm5451->chg_ws);
return 0;
}
static int sm5451_start_pass_through_charging(struct sm5451_charger *sm5451)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
int ret;
if (sm5451->cable_online < 1) {
dev_err(sm5451->dev, "%s: can't detect valid cable connection(online=%d)\n",
__func__, sm5451->cable_online);
return -ENODEV;
}
if (state < SM_DC_PRESET) {
pr_err("%s %s: charging off state (state=%d)\n", sm_dc->name, __func__, sm_dc->state);
return -ENODEV;
}
sm5451_stop_charging(sm5451);
sm5451_prechg_enable(sm5451, 1);
msleep(200);
/* Disable IBUSUCP & Set freq*/
sm5451_set_freq(sm5451, sm5451->pdata->freq_byp); /* FREQ */
sm5451_write_reg(sm5451, SM5451_REG_CNTL3, 0x83); /* RLTVOVP = disabled, RLTVUVP = disabled */
sm5451_update_reg(sm5451, SM5451_REG_IBUS_PROT, 0, 0x1, 7); /* IBUSUCP = disabled */
ret = sm_dc_start_manual_charging(sm_dc);
if (ret < 0) {
dev_err(sm5451->dev, "%s: fail to start direct-charging\n", __func__);
return ret;
}
__pm_stay_awake(sm5451->chg_ws);
return 0;
}
static int sm5451_set_pass_through_ta_vol(struct sm5451_charger *sm5451, int delta_soc)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
if (sm5451->cable_online < 1) {
dev_err(sm5451->dev, "%s: can't detect valid cable connection(online=%d)\n",
__func__, sm5451->cable_online);
return -ENODEV;
}
if (state != SM_DC_CV_MAN) {
pr_err("%s %s: pass-through mode was not set.(dc state = %d)\n", sm_dc->name, __func__, sm_dc->state);
return -ENODEV;
}
return sm_dc_set_ta_volt_by_soc(sm_dc, delta_soc);
}
static int psy_chg_get_online(struct sm5451_charger *sm5451)
{
u8 flag, vbus_pok, cable_online;
cable_online = sm5451->cable_online < 1 ? 0 : 1;
flag = sm5451_get_flag_status(sm5451, SM5451_REG_FLAG3);
dev_info(sm5451->dev, "%s: FLAG3=0x%x\n", __func__, flag);
vbus_pok = (flag >> 7) & 0x1;
if (vbus_pok != cable_online) {
dev_err(sm5451->dev, "%s: mismatched vbus state(vbus_pok:%d cable_online:%d)\n",
__func__, vbus_pok, sm5451->cable_online);
}
return sm5451->cable_online;
}
static int psy_chg_get_status(struct sm5451_charger *sm5451)
{
int status = POWER_SUPPLY_STATUS_UNKNOWN;
u8 flag1, flag2, flag3, flag4;
flag1 = sm5451_get_flag_status(sm5451, SM5451_REG_FLAG1);
flag2 = sm5451_get_flag_status(sm5451, SM5451_REG_FLAG2);
flag3 = sm5451_get_flag_status(sm5451, SM5451_REG_FLAG3);
flag4 = sm5451_get_flag_status(sm5451, SM5451_REG_FLAG4);
dev_info(sm5451->dev, "%s: FLAG:0x%x:0x%x:0x%x:0x%x\n",
__func__, flag1, flag2, flag3, flag4);
if (sm5451_check_charging_enable(sm5451)) {
status = POWER_SUPPLY_STATUS_CHARGING;
} else {
if ((flag3 >> 7) & 0x1) { /* check vbus-pok */
status = POWER_SUPPLY_STATUS_NOT_CHARGING;
} else {
status = POWER_SUPPLY_STATUS_DISCHARGING;
}
}
return status;
}
static int psy_chg_get_health(struct sm5451_charger *sm5451)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
int health = POWER_SUPPLY_HEALTH_GOOD;
u8 flag, chg_on;
if (state == SM_DC_ERR) {
health = POWER_SUPPLY_EXT_HEALTH_DC_ERR;
dev_info(sm5451->dev, "%s: chg_state=%d, health=%d\n",
__func__, state, health);
} else if (state >= SM_DC_PRE_CC && state <= SM_DC_CV) {
chg_on = sm5451_check_charging_enable(sm5451);
flag = sm5451_get_flag_status(sm5451, SM5451_REG_FLAG3);
if (chg_on == false) {
health = POWER_SUPPLY_EXT_HEALTH_DC_ERR;
} else if (((flag >> 7) & 0x1) == 0x0) { /* VBUS_POK status is disabled */
health = POWER_SUPPLY_EXT_HEALTH_DC_ERR;
}
dev_info(sm5451->dev, "%s: chg_on=%d, flag3=0x%x, health=%d\n",
__func__, chg_on, flag, health);
}
return health;
}
static int psy_chg_get_chg_vol(struct sm5451_charger *sm5451)
{
u32 chg_vol = sm5451_get_vbatreg(sm5451);
dev_info(sm5451->dev, "%s: VBAT_REG=%dmV\n", __func__, chg_vol);
return chg_vol;
}
static int psy_chg_get_input_curr(struct sm5451_charger *sm5451)
{
u32 input_curr = sm5451_get_ibuslim(sm5451);
dev_info(sm5451->dev, "%s: IBUSLIM=%dmA\n", __func__, input_curr);
return input_curr;
}
static int psy_chg_get_ext_monitor_work(struct sm5451_charger *sm5451)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
int adc_vbus, adc_ibus, adc_vbat, adc_ibat, adc_them, adc_tdie;
if (state < SM_DC_CHECK_VBAT && (sm_dc->chip_id != SM5451_SUB)) {
dev_info(sm5451->dev, "%s: charging off state (state=%d)\n", __func__, state);
return -EINVAL;
}
adc_vbus = sm5451_convert_adc(sm5451, SM5451_ADC_VBUS);
adc_ibus = sm5451_convert_adc(sm5451, SM5451_ADC_IBUS);
adc_vbat = sm5451_convert_adc(sm5451, SM5451_ADC_VBAT);
adc_ibat = sm5451_convert_adc(sm5451, SM5451_ADC_IBAT);
adc_them = sm5451_convert_adc(sm5451, SM5451_ADC_THEM);
adc_tdie = sm5451_convert_adc(sm5451, SM5451_ADC_TDIE);
pr_info("sm5451-charger: adc_monitor: vbus:%d:ibus:%d:vbat:%d:ibat:%d:them:%d:tdie:%d\n",
adc_vbus, adc_ibus, adc_vbat, adc_ibat, adc_them, adc_tdie);
sm5451_print_regmap(sm5451);
return 0;
}
static int psy_chg_get_ext_measure_input(struct sm5451_charger *sm5451, int index)
{
struct sm5451_charger *sm5451_sub = NULL;
struct power_supply *psy_dc_sub = NULL;
int adc = 0;
if (sm5451->chip_id != SM5451_SUB) {
psy_dc_sub = power_supply_get_by_name("sm5451-charger-sub");
if (!psy_dc_sub)
sm5451_sub = NULL;
else
sm5451_sub = power_supply_get_drvdata(psy_dc_sub);
}
switch (index) {
case SEC_BATTERY_IIN_MA:
if (sm5451_sub)
adc = sm5451_convert_adc(sm5451_sub, SM5451_ADC_IBUS);
adc += sm5451_convert_adc(sm5451, SM5451_ADC_IBUS);
break;
case SEC_BATTERY_IIN_UA:
if (sm5451_sub)
adc = sm5451_convert_adc(sm5451_sub, SM5451_ADC_IBUS) * 1000;
adc += sm5451_convert_adc(sm5451, SM5451_ADC_IBUS) * 1000;
break;
case SEC_BATTERY_VIN_MA:
adc = sm5451_convert_adc(sm5451, SM5451_ADC_VBUS);
break;
case SEC_BATTERY_VIN_UA:
adc = sm5451_convert_adc(sm5451, SM5451_ADC_VBUS) * 1000;
break;
default:
adc = 0;
break;
}
dev_info(sm5451->dev, "%s: index=%d, adc=%d\n", __func__, index, adc);
return adc;
}
static const char * const sm5451_dc_state_str[] = {
"NO_CHARGING", "DC_ERR", "CHARGING_DONE", "CHECK_VBAT", "PRESET_DC",
"ADJUST_CC", "UPDATE_BAT", "CC_MODE", "CV_MODE", "CV_MAN_MODE"
};
static int psy_chg_get_ext_direct_charger_chg_status(
struct sm5451_charger *sm5451, union power_supply_propval *val)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
val->strval = sm5451_dc_state_str[state];
pr_info("%s: CHARGER_STATUS(%s)\n", __func__, val->strval);
return 0;
}
static int sm5451_chg_get_property(struct power_supply *psy,
enum power_supply_property psp, union power_supply_propval *val)
{
struct sm5451_charger *sm5451 = power_supply_get_drvdata(psy);
enum power_supply_ext_property ext_psp =
(enum power_supply_ext_property)psp;
int adc_them;
dev_info(sm5451->dev, "%s: psp=%d\n", __func__, psp);
switch ((int)psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = psy_chg_get_online(sm5451);
break;
case POWER_SUPPLY_PROP_STATUS:
val->intval = psy_chg_get_status(sm5451);
break;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = psy_chg_get_health(sm5451);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
val->intval = psy_chg_get_chg_vol(sm5451);
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
val->intval = psy_chg_get_input_curr(sm5451);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
val->intval = sm5451->target_ibat;
break;
case POWER_SUPPLY_PROP_TEMP:
adc_them = sm5451_convert_adc(sm5451, SM5451_ADC_THEM);
val->intval = adc_them;
break;
#if IS_ENABLED(CONFIG_DUAL_BATTERY)
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = sm5451_convert_adc(sm5451, SM5451_ADC_VBAT);
break;
#endif
case POWER_SUPPLY_EXT_PROP_MIN ... POWER_SUPPLY_EXT_PROP_MAX:
switch (ext_psp) {
case POWER_SUPPLY_EXT_PROP_CHARGING_ENABLED:
val->intval = sm5451_check_charging_enable(sm5451);
break;
case POWER_SUPPLY_EXT_PROP_MONITOR_WORK:
psy_chg_get_ext_monitor_work(sm5451);
break;
case POWER_SUPPLY_EXT_PROP_MEASURE_INPUT:
val->intval = psy_chg_get_ext_measure_input(sm5451, val->intval);
break;
case POWER_SUPPLY_EXT_PROP_MEASURE_SYS:
dev_err(sm5451->dev, "%s: need to works\n", __func__);
/*
* Need to check operation details.. by SEC.
*/
val->intval = -EINVAL;
break;
case POWER_SUPPLY_EXT_PROP_DIRECT_CHARGER_CHG_STATUS:
psy_chg_get_ext_direct_charger_chg_status(sm5451, val);
break;
case POWER_SUPPLY_EXT_PROP_PASS_THROUGH_MODE:
break;
case POWER_SUPPLY_EXT_PROP_PASS_THROUGH_MODE_TA_VOL:
break;
case POWER_SUPPLY_EXT_PROP_D2D_REVERSE_VOLTAGE:
val->intval = sm5451->rev_boost ? 1 : 0;
break;
case POWER_SUPPLY_EXT_PROP_D2D_REVERSE_OCP:
val->intval = sm5451_get_reverse_boost_ocp(sm5451);
break;
case POWER_SUPPLY_EXT_PROP_D2D_REVERSE_VBUS:
val->intval = sm5451_convert_adc(sm5451, SM5451_ADC_VBUS);
break;
case POWER_SUPPLY_EXT_PROP_DC_OP_MODE:
val->intval = sm5451_get_op_mode(sm5451);
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
return 0;
}
static int psy_chg_set_online(struct sm5451_charger *sm5451, int online)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int ret = 0;
dev_info(sm5451->dev, "%s: online=%d\n", __func__, online);
if (online < 2) {
if (sm_dc_get_current_state(sm_dc) > SM_DC_EOC)
sm5451_stop_charging(sm5451);
}
sm5451->cable_online = online;
sm5451->vbus_in = sm5451->cable_online > 2 ? true : false;
return ret;
}
static int psy_chg_set_const_chg_voltage(struct sm5451_charger *sm5451, int vbat)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
int ret = 0;
dev_info(sm5451->dev, "%s: [%dmV] to [%dmV]\n", __func__, sm5451->target_vbat, vbat);
if (sm5451->target_vbat != vbat || state < SM_DC_CHECK_VBAT) {
sm5451->target_vbat = vbat;
ret = sm_dc_set_target_vbat(sm_dc, sm5451->target_vbat);
}
return ret;
}
static int psy_chg_set_chg_curr(struct sm5451_charger *sm5451, int ibat)
{
int ret = 0;
dev_info(sm5451->dev, "%s: dldn't support cc_loop\n", __func__);
sm5451->target_ibat = ibat;
return ret;
}
static int psy_chg_set_input_curr(struct sm5451_charger *sm5451, int ibus)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int state = sm_dc_get_current_state(sm_dc);
int ret = 0;
dev_info(sm5451->dev, "%s: ibus [%dmA] to [%dmA]\n", __func__, sm5451->target_ibus, ibus);
if (sm5451->target_ibus != ibus || state < SM_DC_CHECK_VBAT) {
sm5451->target_ibus = ibus;
if (sm5451->target_ibus < SM5451_TA_MIN_CURRENT) {
dev_info(sm5451->dev, "%s: can't used less then ta_min_current(%dmA)\n",
__func__, SM5451_TA_MIN_CURRENT);
sm5451->target_ibus = SM5451_TA_MIN_CURRENT;
}
ret = sm_dc_set_target_ibus(sm_dc, sm5451->target_ibus);
}
return ret;
}
static int psy_chg_set_const_chg_voltage_max(struct sm5451_charger *sm5451, int max_vbat)
{
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
dev_info(sm5451->dev, "%s: max_vbat [%dmA] to [%dmA]\n",
__func__, sm5451->max_vbat, max_vbat);
sm5451->max_vbat = max_vbat;
sm_dc->config.chg_float_voltage = max_vbat;
return 0;
}
static int psy_chg_ext_wdt_control(struct sm5451_charger *sm5451, int wdt_control)
{
if (wdt_control)
sm5451->wdt_disable = 1;
else
sm5451->wdt_disable = 0;
dev_info(sm5451->dev, "%s: wdt_disable=%d\n", __func__, sm5451->wdt_disable);
return 0;
}
static int sm5451_chg_set_property(struct power_supply *psy,
enum power_supply_property psp, const union power_supply_propval *val)
{
struct sm5451_charger *sm5451 = power_supply_get_drvdata(psy);
enum power_supply_ext_property ext_psp =
(enum power_supply_ext_property) psp;
int ret = 0;
dev_info(sm5451->dev, "%s: psp=%d, val-intval=%d\n", __func__, psp, val->intval);
switch ((int)psp) {
case POWER_SUPPLY_PROP_ONLINE:
psy_chg_set_online(sm5451, val->intval);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE:
ret = psy_chg_set_const_chg_voltage(sm5451, val->intval);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX:
ret = psy_chg_set_const_chg_voltage_max(sm5451, val->intval);
break;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
ret = psy_chg_set_chg_curr(sm5451, val->intval);
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
ret = psy_chg_set_input_curr(sm5451, val->intval);
break;
case POWER_SUPPLY_EXT_PROP_MIN ... POWER_SUPPLY_EXT_PROP_MAX:
switch (ext_psp) {
case POWER_SUPPLY_EXT_PROP_DIRECT_WDT_CONTROL:
ret = psy_chg_ext_wdt_control(sm5451, val->intval);
break;
case POWER_SUPPLY_EXT_PROP_CHARGING_ENABLED:
if (val->intval)
ret = sm5451_start_charging(sm5451);
else
ret = sm5451_stop_charging(sm5451);
sm5451_print_regmap(sm5451);
break;
case POWER_SUPPLY_EXT_PROP_DIRECT_CURRENT_MAX:
ret = psy_chg_set_input_curr(sm5451, val->intval);
break;
case POWER_SUPPLY_EXT_PROP_DIRECT_ADC_CTRL:
if (val->intval)
sm5451_enable_adc_oneshot(sm5451, 1);
else
sm5451_enable_adc_oneshot(sm5451, 0);
sm5451->force_adc_on = val->intval;
pr_info("%s: ADC_CTRL : %d\n", __func__, val->intval);
break;
case POWER_SUPPLY_EXT_PROP_PASS_THROUGH_MODE:
pr_info("[PASS_THROUGH] %s: called\n", __func__);
if (val->intval)
ret = sm5451_start_pass_through_charging(sm5451);
else
ret = sm5451_stop_charging(sm5451);
break;
case POWER_SUPPLY_EXT_PROP_PASS_THROUGH_MODE_TA_VOL:
pr_info("[PASS_THROUGH_VOL] %s: called\n", __func__);
sm5451_set_pass_through_ta_vol(sm5451, val->intval);
break;
case POWER_SUPPLY_EXT_PROP_D2D_REVERSE_VOLTAGE:
sm5451_reverse_boost_enable(sm5451, val->intval);
break;
case POWER_SUPPLY_EXT_PROP_ADC_MODE:
if (val->intval)
sm5451_set_adc_mode(sm5451->i2c, SM_DC_ADC_MODE_CONTINUOUS);
else
sm5451_set_adc_mode(sm5451->i2c, SM_DC_ADC_MODE_OFF);
break;
case POWER_SUPPLY_EXT_PROP_DC_OP_MODE:
if (val->intval == 1)
sm5451_set_op_mode(sm5451, OP_MODE_REV_BOOST);
else if (val->intval == 0)
sm5451_set_op_mode(sm5451, OP_MODE_INIT);
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
if (ret < 0)
return ret;
return 0;
}
static char *sm5451_supplied_to[] = {
"sm5451-charger",
};
static enum power_supply_property sm5451_charger_props[] = {
POWER_SUPPLY_PROP_ONLINE,
};
static const struct power_supply_desc sm5451_charger_power_supply_desc = {
.name = "sm5451-charger",
.type = POWER_SUPPLY_TYPE_UNKNOWN,
.get_property = sm5451_chg_get_property,
.set_property = sm5451_chg_set_property,
.properties = sm5451_charger_props,
.num_properties = ARRAY_SIZE(sm5451_charger_props),
};
static const struct power_supply_desc sm5451_charger_power_supply_sub_desc = {
.name = "sm5451-charger-sub",
.type = POWER_SUPPLY_TYPE_UNKNOWN,
.get_property = sm5451_chg_get_property,
.set_property = sm5451_chg_set_property,
.properties = sm5451_charger_props,
.num_properties = ARRAY_SIZE(sm5451_charger_props),
};
static int sm5451_get_adc_value(struct i2c_client *i2c, u8 adc_ch)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
int adc;
switch (adc_ch) {
case SM_DC_ADC_THEM:
adc = sm5451_convert_adc(sm5451, SM5451_ADC_THEM);
break;
case SM_DC_ADC_DIETEMP:
adc = sm5451_convert_adc(sm5451, SM5451_ADC_TDIE);
break;
case SM_DC_ADC_VBAT:
adc = sm5451_convert_adc(sm5451, SM5451_ADC_VBAT);
break;
case SM_DC_ADC_IBAT:
adc = sm5451_convert_adc(sm5451, SM5451_ADC_IBAT);
break;
case SM_DC_ADC_VBUS:
adc = sm5451_convert_adc(sm5451, SM5451_ADC_VBUS);
break;
case SM_DC_ADC_IBUS:
adc = sm5451_convert_adc(sm5451, SM5451_ADC_IBUS);
break;
case SM_DC_ADC_VOUT:
default:
adc = 0;
break;
}
return adc;
}
static int sm5451_get_charging_enable(struct i2c_client *i2c)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
return sm5451_check_charging_enable(sm5451);
}
static int sm5451_set_charging_enable(struct i2c_client *i2c, bool enable)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
sm5451_prechg_enable(sm5451, 0);
if (enable) {
if (sm_dc->ta.v_max < SM_DC_BYPASS_TA_MAX_VOL)
sm5451_set_op_mode(sm5451, OP_MODE_FW_BYPASS);
else
sm5451_set_op_mode(sm5451, OP_MODE_FW_BOOST);
} else {
sm5451_set_op_mode(sm5451, OP_MODE_INIT);
}
sm5451_print_regmap(sm5451);
return 0;
}
static int sm5451_dc_set_charging_config(struct i2c_client *i2c, u32 cv_gl, u32 ci_gl, u32 cc_gl)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
u32 vbatreg, ibuslim, freq;
vbatreg = cv_gl + SM5451_CV_OFFSET;
if (ci_gl <= SM5451_TA_MIN_CURRENT)
ibuslim = ci_gl + (SM5451_CI_OFFSET * 2);
else
ibuslim = ci_gl + SM5451_CI_OFFSET;
if (ibuslim % 100)
ibuslim = ((ibuslim / 100) * 100) + 100;
if (ci_gl <= SM5451_SIOP_LEV1)
freq = sm5451->pdata->freq_siop[0];
else if (ci_gl <= SM5451_SIOP_LEV2)
freq = sm5451->pdata->freq_siop[1];
else
freq = sm5451->pdata->freq;
sm5451_set_ibuslim(sm5451, ibuslim);
sm5451_set_vbatreg(sm5451, vbatreg);
sm5451_set_freq(sm5451, freq);
pr_info("%s %s: vbat_reg=%dmV, ibus_lim=%dmA, freq=%dkHz\n", sm_dc->name,
__func__, vbatreg, ibuslim, SM5451_freq_val[freq]);
return 0;
}
static int sm5451_x2bat_dc_set_charging_config(struct i2c_client *i2c, u32 cv_gl, u32 ci_gl, u32 cc_gl)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
u32 vbatreg, ibuslim, freq;
vbatreg = cv_gl + SM5451_CV_OFFSET;
if (sm_dc->chip_id == SM5451_SUB) {
if (ci_gl <= SM5451_TA_MIN_CURRENT)
ibuslim = ci_gl + SM_DC_CI_OFFSET_X2BAT + SM5451_CI_OFFSET;
else
ibuslim = ci_gl + SM_DC_CI_OFFSET_X2BAT;
if (ibuslim % 100)
ibuslim = ((ibuslim / 100) * 100) + 100;
} else {
ibuslim = ((ci_gl - 100) / 100) * 100;
}
if (ci_gl <= SM5451_SIOP_LEV1)
freq = sm5451->pdata->freq_siop[0];
else if (ci_gl <= SM5451_SIOP_LEV2)
freq = sm5451->pdata->freq_siop[1];
else
freq = sm5451->pdata->freq;
sm5451_set_ibuslim(sm5451, ibuslim);
sm5451_set_vbatreg(sm5451, vbatreg);
sm5451_set_freq(sm5451, freq);
pr_info("%s %s: vbat_reg=%dmV, ibus_lim=%dmA, freq=%dkHz\n", sm_dc->name,
__func__, vbatreg, ibuslim, SM5451_freq_val[freq]);
return 0;
}
static u32 sm5451_get_dc_error_status(struct i2c_client *i2c)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
u8 flag1, flag2, flag3, flag4, op_mode;
u8 flag1_s, flag2_s, flag3_s, flag4_s;
u32 err = SM_DC_ERR_NONE;
int vnow = 0;
mutex_lock(&sm5451->i2c_lock);
sm5451_read_reg(sm5451, SM5451_REG_FLAG1, &flag1);
sm5451_read_reg(sm5451, SM5451_REG_FLAG2, &flag2);
sm5451_read_reg(sm5451, SM5451_REG_FLAG3, &flag3);
sm5451_read_reg(sm5451, SM5451_REG_FLAG4, &flag4);
pr_info("%s %s: FLAG:0x%x:0x%x:0x%x:0x%x\n", sm_dc->name,
__func__, flag1, flag2, flag3, flag4);
sm5451_read_reg(sm5451, SM5451_REG_FLAG1, &flag1_s);
sm5451_read_reg(sm5451, SM5451_REG_FLAG2, &flag2_s);
sm5451_read_reg(sm5451, SM5451_REG_FLAG3, &flag3_s);
sm5451_read_reg(sm5451, SM5451_REG_FLAG4, &flag4_s);
op_mode = sm5451_get_op_mode(sm5451);
pr_info("%s %s: FLAG:0x%x:0x%x:0x%x:0x%x op_mode=0x%x\n", sm_dc->name,
__func__, flag1_s, flag2_s, flag3_s, flag4_s, op_mode);
mutex_unlock(&sm5451->i2c_lock);
if (sm_dc->chip_id != SM5451_SUB)
vnow = sm5451_get_vnow(sm5451);
if ((op_mode == OP_MODE_INIT) && (sm_dc->wq.retry_cnt < 3) && (sm_dc->chip_id != SM5451_SUB)) {
pr_info("%s %s: try to retry, cnt:%d\n", sm_dc->name, __func__, sm_dc->wq.retry_cnt);
sm_dc->wq.retry_cnt++;
err = SM_DC_ERR_RETRY;
} else if (op_mode == OP_MODE_INIT) {
if ((flag1 & SM5451_FLAG1_IBUSUCP) || (flag1_s & SM5451_FLAG1_IBUSUCP))
err += SM_DC_ERR_IBUSUCP;
if ((flag3 & SM5451_FLAG3_VBUSUVLO) || (flag3_s & SM5451_FLAG3_VBUSUVLO))
err += SM_DC_ERR_VBUSUVLO;
if ((flag1 & SM5451_FLAG1_VBUSOVP) || (flag1_s & SM5451_FLAG1_VBUSOVP))
err += SM_DC_ERR_VBUSOVP;
if ((flag1 & SM5451_FLAG1_IBUSOCP) || (flag1_s & SM5451_FLAG1_IBUSOCP))
err += SM_DC_ERR_IBUSOCP;
if ((flag2 & SM5451_FLAG2_CNSHTP) || (flag2_s & SM5451_FLAG2_CNSHTP))
err += SM_DC_ERR_CN_SHORT;
if ((flag3 & SM5451_FLAG3_CFLYSHTP) || (flag3_s & SM5451_FLAG3_CFLYSHTP))
err += SM_DC_ERR_CFLY_SHORT;
if (err == SM_DC_ERR_NONE)
err += SM_DC_ERR_UNKNOWN;
if (err == SM_DC_ERR_UNKNOWN && sm_dc->chip_id == SM5451_SUB)
pr_info("%s %s: SM_DC_ERR_NONE\n", sm_dc->name, __func__);
else
pr_info("%s %s: SM_DC_ERR(err=0x%x)\n", sm_dc->name, __func__, err);
} else {
if (flag3_s & SM5451_FLAG3_VBUSUVLO) {
pr_info("%s %s: vbus uvlo detected, try to retry\n", sm_dc->name, __func__);
err = SM_DC_ERR_RETRY;
} else if ((flag2 & SM5451_FLAG2_VBATREG) || (flag2_s & SM5451_FLAG2_VBATREG) ||
(sm_dc->target_vbat <= vnow)) {
pr_info("%s %s: VBATREG detected\n", sm_dc->name, __func__);
err = SM_DC_ERR_VBATREG;
} else if (flag4_s & SM5451_FLAG4_IBUSREG) {
pr_info("%s %s: IBUSREG detected\n", sm_dc->name, __func__);
err = SM_DC_ERR_IBUSREG;
} else if (vnow < 0) {
err = SM_DC_ERR_INVAL_VBAT;
pr_info("%s %s: SM_DC_ERR(err=0x%x)\n", sm_dc->name, __func__, err);
}
}
if (!sm5451->wdt_disable)
sm5451_kick_wdt(sm5451);
return err;
}
static int sm5451_send_pd_msg(struct i2c_client *i2c, struct sm_dc_power_source_info *ta)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int ret;
mutex_lock(&sm5451->pd_lock);
ret = sec_pd_select_pps(ta->pdo_pos, ta->v, ta->c);
if (ret == -EBUSY) {
pr_info("%s %s: request again\n", sm_dc->name, __func__);
msleep(100);
ret = sec_pd_select_pps(ta->pdo_pos, ta->v, ta->c);
}
mutex_unlock(&sm5451->pd_lock);
return ret;
}
static int sm5451_get_apdo_max_power(struct i2c_client *i2c, struct sm_dc_power_source_info *ta)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
int ret;
ta->pdo_pos = 0; /* set '0' else return error */
ta->v_max = 10000; /* request voltage level */
ta->c_max = 0;
ta->p_max = 0;
ret = sec_pd_get_apdo_max_power(&ta->pdo_pos, &ta->v_max, &ta->c_max, &ta->p_max);
if (ret < 0) {
dev_err(sm5451->dev, "%s: error:sec_pd_get_apdo_max_power\n", __func__);
} else {
sm_dc->ta.pdo_pos = ta->pdo_pos;
sm_dc->ta.v_max = ta->v_max;
sm_dc->ta.c_max = ta->c_max;
sm_dc->ta.p_max = ta->p_max;
}
dev_info(sm5451->dev, "%s: pdo_pos:%d, max_vol:%dmV, max_cur:%dmA, max_pwr:%dmW\n",
__func__, ta->pdo_pos, ta->v_max, ta->c_max, ta->p_max);
return ret;
}
static u32 sm5451_get_target_ibus(struct i2c_client *i2c)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
dev_info(sm5451->dev, "%s: %dmA\n", __func__, sm5451->target_ibus);
return sm5451->target_ibus;
}
static const struct sm_dc_ops sm5451_dc_pps_ops = {
.get_adc_value = sm5451_get_adc_value,
.set_adc_mode = sm5451_set_adc_mode,
.get_charging_enable = sm5451_get_charging_enable,
.get_dc_error_status = sm5451_get_dc_error_status,
.set_charging_enable = sm5451_set_charging_enable,
.set_charging_config = sm5451_dc_set_charging_config,
.send_power_source_msg = sm5451_send_pd_msg,
.get_apdo_max_power = sm5451_get_apdo_max_power,
.get_target_ibus = sm5451_get_target_ibus,
};
static const struct sm_dc_ops sm5451_x2bat_dc_pps_ops = {
.get_adc_value = sm5451_get_adc_value,
.set_adc_mode = sm5451_set_adc_mode,
.get_charging_enable = sm5451_get_charging_enable,
.get_dc_error_status = sm5451_get_dc_error_status,
.set_charging_enable = sm5451_set_charging_enable,
.set_charging_config = sm5451_x2bat_dc_set_charging_config,
.send_power_source_msg = sm5451_send_pd_msg,
.get_apdo_max_power = sm5451_get_apdo_max_power,
.get_target_ibus = sm5451_get_target_ibus,
};
static irqreturn_t sm5451_irq_thread(int irq, void *data)
{
struct sm5451_charger *sm5451 = (struct sm5451_charger *)data;
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
u8 op_mode = sm5451_get_op_mode(sm5451);
u8 flag1, flag2, flag3, flag4;
u32 err = 0x0;
sm5451_read_reg(sm5451, SM5451_REG_FLAG1, &flag1);
sm5451_read_reg(sm5451, SM5451_REG_FLAG2, &flag2);
sm5451_read_reg(sm5451, SM5451_REG_FLAG3, &flag3);
sm5451_read_reg(sm5451, SM5451_REG_FLAG4, &flag4);
dev_info(sm5451->dev, "%s: FLAG:0x%x:0x%x:0x%x:0x%x\n",
__func__, flag1, flag2, flag3, flag4);
/* check forced CUT-OFF status */
if (sm_dc_get_current_state(sm_dc) > SM_DC_PRESET &&
op_mode == OP_MODE_INIT) {
if (flag1 & SM5451_FLAG1_VBUSOVP)
err += SM_DC_ERR_VBUSOVP;
if (flag1 & SM5451_FLAG1_IBUSOCP)
err += SM_DC_ERR_IBUSOCP;
if (flag1 & SM5451_FLAG1_IBUSUCP)
err += SM_DC_ERR_IBUSUCP;
if (flag2 & SM5451_FLAG2_VBATOVP)
err += SM_DC_ERR_VBATOVP;
/* un-used IBATOCP protection
* if (flag2 & SM5451_FLAG2_IBATOCP)
* err += SM_DC_ERR_IBATOCP;
*/
if (flag2 & SM5451_FLAG2_TSD)
err += SM_DC_ERR_TSD;
if (flag2 & SM5451_FLAG2_RLTVOVP)
err += SM_DC_ERR_STUP_FAIL;
if (flag2 & SM5451_FLAG2_RLTVUVP)
err += SM_DC_ERR_STUP_FAIL;
if (flag2 & SM5451_FLAG2_CNSHTP)
err += SM_DC_ERR_CN_SHORT;
if (flag3 & SM5451_FLAG3_VBUSUVLO)
err += SM_DC_ERR_VBUSUVLO;
if (flag3 & SM5451_FLAG3_CFLYSHTP)
err += SM_DC_ERR_CFLY_SHORT;
dev_err(sm5451->dev, "%s: forced charge cut-off(err=0x%x)\n", __func__, err);
sm_dc_report_error_status(sm_dc, err);
}
if (flag2 & SM5451_FLAG2_VBATREG) {
dev_info(sm5451->dev, "%s: VBATREG detected\n", __func__);
sm_dc_report_interrupt_event(sm_dc, SM_DC_INT_VBATREG);
}
if (flag2 & SM5451_FLAG2_IBATREG)
dev_info(sm5451->dev, "%s: IBATREG detected\n", __func__);
if (flag4 & SM5451_FLAG4_IBUSREG)
dev_info(sm5451->dev, "%s: IBUSREG detected\n", __func__);
if (flag3 & SM5451_FLAG3_VBUSPOK)
dev_info(sm5451->dev, "%s: VBUSPOK detected\n", __func__);
if (flag3 & SM5451_FLAG3_VBUSUVLO)
dev_info(sm5451->dev, "%s: VBUSUVLO detected\n", __func__);
if (flag3 & SM5451_FLAG3_WTDTMR) {
dev_info(sm5451->dev, "%s: Watchdog Timer expired\n", __func__);
sm_dc_report_interrupt_event(sm_dc, SM_DC_INT_WDTOFF);
}
dev_info(sm5451->dev, "closed %s\n", __func__);
return IRQ_HANDLED;
}
static int sm5451_irq_init(struct sm5451_charger *sm5451)
{
int ret;
u8 reg;
sm5451->irq = gpio_to_irq(sm5451->pdata->irq_gpio);
dev_info(sm5451->dev, "%s: irq_gpio=%d, irq=%d\n", __func__,
sm5451->pdata->irq_gpio, sm5451->irq);
ret = gpio_request(sm5451->pdata->irq_gpio, "sm5540_irq");
if (ret) {
dev_err(sm5451->dev, "%s: fail to request gpio(ret=%d)\n",
__func__, ret);
return ret;
}
gpio_direction_input(sm5451->pdata->irq_gpio);
gpio_free(sm5451->pdata->irq_gpio);
sm5451_write_reg(sm5451, SM5451_REG_FLAGMSK1, 0xE2);
sm5451_write_reg(sm5451, SM5451_REG_FLAGMSK2, 0x00);
sm5451_write_reg(sm5451, SM5451_REG_FLAGMSK3, 0xD6);
sm5451_write_reg(sm5451, SM5451_REG_FLAGMSK4, 0xDA);
sm5451_read_reg(sm5451, SM5451_REG_FLAG1, &reg);
sm5451_read_reg(sm5451, SM5451_REG_FLAG2, &reg);
sm5451_read_reg(sm5451, SM5451_REG_FLAG3, &reg);
sm5451_read_reg(sm5451, SM5451_REG_FLAG4, &reg);
ret = request_threaded_irq(sm5451->irq, NULL, sm5451_irq_thread,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"sm5451-irq", sm5451);
if (ret) {
dev_err(sm5451->dev, "%s: fail to request irq(ret=%d)\n",
__func__, ret);
return ret;
}
return 0;
}
static void sm5451_hw_init_config(struct sm5451_charger *sm5451)
{
int ret;
u8 reg;
/* check to valid I2C transfer & register control */
ret = sm5451_read_reg(sm5451, SM5451_REG_DEVICE_ID, &reg);
if (ret < 0 || (reg & 0xF) != 0x1) {
dev_err(sm5451->dev, "%s: device not found on this channel (reg=0x%x)\n",
__func__, reg);
}
sm5451->pdata->rev_id = (reg >> 4) & 0xf;
sm5451_init_reg_param(sm5451);
#if IS_ENABLED(CONFIG_BATTERY_SAMSUNG)
psy_chg_set_const_chg_voltage(sm5451, sm5451->pdata->battery.chg_float_voltage);
sm5451_reverse_boost_enable(sm5451, false);
#endif
}
#if defined(CONFIG_OF)
static int sm5451_charger_parse_dt(struct device *dev,
struct sm5451_platform_data *pdata)
{
struct device_node *np_sm5451 = dev->of_node;
struct device_node *np_battery;
int ret;
/* Parse: sm5451 node */
if (!np_sm5451) {
dev_err(dev, "%s: empty of_node for sm5451_dev\n", __func__);
return -EINVAL;
}
pdata->irq_gpio = of_get_named_gpio(np_sm5451, "sm5451,irq-gpio", 0);
dev_info(dev, "parse_dt: irq_gpio=%d\n", pdata->irq_gpio);
ret = of_property_read_u32(np_sm5451, "sm5451,pps_lr", &pdata->pps_lr);
if (ret) {
dev_info(dev, "%s: sm5451,pps_lr is Empty\n", __func__);
pdata->pps_lr = 340000;
}
dev_info(dev, "parse_dt: pps_lr=%d\n", pdata->pps_lr);
ret = of_property_read_u32(np_sm5451, "sm5451,rpcm", &pdata->rpcm);
if (ret) {
dev_info(dev, "%s: sm5451,rpcm is Empty\n", __func__);
pdata->rpcm = 55000;
}
dev_info(dev, "parse_dt: rpcm=%d\n", pdata->rpcm);
ret = of_property_read_u32(np_sm5451, "sm5451,r_ttl", &pdata->r_ttl);
if (ret) {
dev_info(dev, "%s: sm5451,r_ttl is Empty\n", __func__);
pdata->r_ttl = 99000;
}
dev_info(dev, "parse_dt: r_ttl=%d\n", pdata->r_ttl);
ret = of_property_read_u32(np_sm5451, "sm5451,freq", &pdata->freq);
if (ret) {
dev_info(dev, "%s: sm5451,freq is Empty\n", __func__);
pdata->freq = SM5451_FREQ_750KHZ;
}
dev_info(dev, "parse_dt: freq=%dkHz\n", SM5451_freq_val[pdata->freq]);
ret = of_property_read_u32(np_sm5451, "sm5451,freq_byp", &pdata->freq_byp);
if (ret) {
dev_info(dev, "%s: sm5451,freq_byp is Empty\n", __func__);
pdata->freq_byp = SM5451_FREQ_375KHZ;
}
dev_info(dev, "parse_dt: freq_byp=%dkHz\n", SM5451_freq_val[pdata->freq_byp]);
ret = of_property_read_u32_array(np_sm5451, "sm5451,freq_siop", pdata->freq_siop, 2);
if (ret) {
dev_info(dev, "%s: sm5451,freq_siop is Empty\n", __func__);
pdata->freq_siop[0] = SM5451_FREQ_200KHZ;
pdata->freq_siop[1] = SM5451_FREQ_375KHZ;
}
dev_info(dev, "parse_dt: freq_siop=%dkHz, %dkHz\n",
SM5451_freq_val[pdata->freq_siop[0]], SM5451_freq_val[pdata->freq_siop[1]]);
ret = of_property_read_u32(np_sm5451, "sm5451,topoff", &pdata->topoff);
if (ret) {
dev_info(dev, "%s: sm5451,topoff is Empty\n", __func__);
pdata->topoff = 900;
}
dev_info(dev, "parse_dt: topoff=%d\n", pdata->topoff);
ret = of_property_read_u32(np_sm5451, "sm5451,x2bat_mode", &pdata->x2bat_mode);
if (ret) {
dev_info(dev, "%s: sm5451,x2bat_mode is Empty\n", __func__);
pdata->x2bat_mode = 0;
}
dev_info(dev, "parse_dt: x2bat_mode=%d\n", pdata->x2bat_mode);
ret = of_property_read_u32(np_sm5451, "sm5451,en_vbatreg", &pdata->en_vbatreg);
if (ret) {
dev_info(dev, "%s: sm5451,en_vbatreg is Empty\n", __func__);
pdata->en_vbatreg = 0;
}
dev_info(dev, "parse_dt: en_vbatreg=%d\n", pdata->en_vbatreg);
/* Parse: battery node */
np_battery = of_find_node_by_name(NULL, "battery");
if (!np_battery) {
dev_err(dev, "%s: empty of_node for battery\n", __func__);
return -EINVAL;
}
ret = of_property_read_u32(np_battery, "battery,chg_float_voltage",
&pdata->battery.chg_float_voltage);
if (ret) {
dev_info(dev, "%s: battery,chg_float_voltage is Empty\n", __func__);
pdata->battery.chg_float_voltage = 4200;
}
ret = of_property_read_string(np_battery, "battery,charger_name",
(char const **)&pdata->battery.sec_dc_name);
if (ret) {
dev_info(dev, "%s: battery,charger_name is Empty\n", __func__);
pdata->battery.sec_dc_name = "sec-direct-charger";
}
ret = of_property_read_string(np_battery, "battery,fuelgauge_name",
(char const **)&pdata->battery.fuelgauge_name);
if (ret) {
dev_info(dev, "%s: battery,fuelgauge_name is Empty\n", __func__);
pdata->battery.fuelgauge_name = "sec-fuelgauge";
}
dev_info(dev, "parse_dt: float_v=%d, sec_dc_name=%s, fuelgauge_name=%s\n",
pdata->battery.chg_float_voltage, pdata->battery.sec_dc_name,
pdata->battery.fuelgauge_name);
return 0;
}
#endif /* CONFIG_OF */
enum {
ADDR = 0,
SIZE,
DATA,
UPDATE,
TA_MIN,
};
static ssize_t chg_show_attrs(struct device *dev,
struct device_attribute *attr, char *buf);
static ssize_t chg_store_attrs(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count);
#define CHARGER_ATTR(_name) \
{ \
.attr = {.name = #_name, .mode = 0660}, \
.show = chg_show_attrs, \
.store = chg_store_attrs, \
}
static struct device_attribute charger_attrs[] = {
CHARGER_ATTR(addr),
CHARGER_ATTR(size),
CHARGER_ATTR(data),
CHARGER_ATTR(update),
CHARGER_ATTR(ta_min_v),
};
static int chg_create_attrs(struct device *dev)
{
int i, rc;
for (i = 0; i < (int)ARRAY_SIZE(charger_attrs); i++) {
rc = device_create_file(dev, &charger_attrs[i]);
if (rc)
goto create_attrs_failed;
}
return rc;
create_attrs_failed:
dev_err(dev, "%s: failed (%d)\n", __func__, rc);
while (i--)
device_remove_file(dev, &charger_attrs[i]);
return rc;
}
static ssize_t chg_show_attrs(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct sm5451_charger *sm5451 = dev_get_drvdata(dev->parent);
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
const ptrdiff_t offset = attr - charger_attrs;
int i = 0;
u8 addr;
u8 val;
switch (offset) {
case ADDR:
i += sprintf(buf, "0x%x\n", sm5451->addr);
break;
case SIZE:
i += sprintf(buf, "0x%x\n", sm5451->size);
break;
case DATA:
for (addr = sm5451->addr; addr < (sm5451->addr+sm5451->size); addr++) {
sm5451_read_reg(sm5451, addr, &val);
i += scnprintf(buf + i, PAGE_SIZE - i,
"0x%04x : 0x%02x\n", addr, val);
}
break;
case TA_MIN:
i += sprintf(buf, "%d\n", sm_dc->config.ta_min_voltage);
break;
default:
return -EINVAL;
}
return i;
}
static ssize_t chg_store_attrs(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct sm5451_charger *sm5451 = dev_get_drvdata(dev->parent);
struct sm_dc_info *sm_dc = select_sm_dc_info(sm5451);
const ptrdiff_t offset = attr - charger_attrs;
int ret = 0;
int x, y, z, k;
switch (offset) {
case ADDR:
if (sscanf(buf, "0x%4x\n", &x) == 1)
sm5451->addr = x;
ret = count;
break;
case SIZE:
if (sscanf(buf, "%5d\n", &x) == 1)
sm5451->size = x;
ret = count;
break;
case DATA:
if (sscanf(buf, "0x%8x 0x%8x", &x, &y) == 2) {
if ((x >= SM5451_REG_CNTL1 && x <= SM5451_REG_REG1) ||
(x >= SM5451_REG_ADC_CNTL && x <= SM5451_REG_TOPOFF)) {
u8 addr = x;
u8 data = y;
if (sm5451_write_reg(sm5451, addr, data) < 0) {
dev_info(sm5451->dev,
"%s: addr: 0x%x write fail\n", __func__, addr);
}
} else {
dev_info(sm5451->dev,
"%s: addr: 0x%x is wrong\n", __func__, x);
}
}
ret = count;
break;
case UPDATE:
if (sscanf(buf, "0x%8x 0x%8x 0x%8x %d", &x, &y, &z, &k) == 4) {
if ((x >= SM5451_REG_CNTL1 && x <= SM5451_REG_REG1) ||
(x >= SM5451_REG_ADC_CNTL && x <= SM5451_REG_TOPOFF)) {
u8 addr = x, data = y, val = z, pos = k;
if (sm5451_update_reg(sm5451, addr, data, val, pos)) {
dev_info(sm5451->dev,
"%s: addr: 0x%x write fail\n", __func__, addr);
}
} else {
dev_info(sm5451->dev,
"%s: addr: 0x%x is wrong\n", __func__, x);
}
}
ret = count;
break;
case TA_MIN:
if (sscanf(buf, "%5d\n", &x) == 1)
sm_dc->config.ta_min_voltage = x;
ret = count;
break;
default:
ret = -EINVAL;
}
return ret;
}
static int sm5451_dbg_read_reg(void *data, u64 *val)
{
struct sm5451_charger *sm5451 = data;
int ret;
u8 reg;
ret = sm5451_read_reg(sm5451, sm5451->debug_address, &reg);
if (ret < 0) {
dev_err(sm5451->dev, "%s: failed read 0x%02x\n",
__func__, sm5451->debug_address);
return ret;
}
*val = reg;
return 0;
}
static int sm5451_dbg_write_reg(void *data, u64 val)
{
struct sm5451_charger *sm5451 = data;
int ret;
ret = sm5451_write_reg(sm5451, sm5451->debug_address, (u8)val);
if (ret < 0) {
dev_err(sm5451->dev, "%s: failed write 0x%02x to 0x%02x\n",
__func__, (u8)val, sm5451->debug_address);
return ret;
}
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(register_debug_ops, sm5451_dbg_read_reg,
sm5451_dbg_write_reg, "0x%02llx\n");
static int sm5451_create_debugfs_entries(struct sm5451_charger *sm5451)
{
struct dentry *ent;
sm5451->debug_root = debugfs_create_dir("charger-sm5451", NULL);
if (!sm5451->debug_root) {
dev_err(sm5451->dev, "%s: can't create dir\n", __func__);
return -ENOENT;
}
debugfs_create_x32("address", 0644,
sm5451->debug_root, &(sm5451->debug_address));
ent = debugfs_create_file("data", 0644,
sm5451->debug_root, sm5451, &register_debug_ops);
if (!ent) {
dev_err(sm5451->dev, "%s: can't create data\n", __func__);
return -ENOENT;
}
return 0;
}
static const struct i2c_device_id sm5451_charger_id_table[] = {
{ "sm5451-charger", .driver_data = SM5451_MAIN },
{ "sm5451-charger-sub", .driver_data = SM5451_SUB},
{ }
};
MODULE_DEVICE_TABLE(i2c, sm5451_charger_id_table);
#if defined(CONFIG_OF)
static const struct of_device_id sm5451_of_match_table[] = {
{ .compatible = "siliconmitus,sm5451", .data = (void *)SM5451_MAIN },
{ .compatible = "siliconmitus,sm5451-sub", .data = (void *)SM5451_SUB },
{ },
};
MODULE_DEVICE_TABLE(of, sm5451_of_match_table);
#endif /* CONFIG_OF */
static int sm5451_charger_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct sm5451_charger *sm5451;
struct sm_dc_info *pps_dc, *x2bat_dc;
struct sm5451_platform_data *pdata;
struct power_supply_config psy_cfg = {};
const struct of_device_id *of_id;
int ret, chip;
dev_info(&i2c->dev, "%s: probe start\n", __func__);
of_id = of_match_device(sm5451_of_match_table, &i2c->dev);
if (!of_id) {
dev_info(&i2c->dev, "sm5451-Charger matching on node name, compatible is preferred\n");
chip = (enum sm5451_chip_id)id->driver_data;
} else {
chip = (enum sm5451_chip_id)of_id->data;
}
dev_info(&i2c->dev, "%s: chip:%d\n", __func__, chip);
sm5451 = devm_kzalloc(&i2c->dev, sizeof(struct sm5451_charger), GFP_KERNEL);
if (!sm5451)
return -ENOMEM;
#if defined(CONFIG_OF)
pdata = devm_kzalloc(&i2c->dev, sizeof(struct sm5451_platform_data), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
ret = sm5451_charger_parse_dt(&i2c->dev, pdata);
if (ret < 0) {
dev_err(&i2c->dev, "%s: fail to parse_dt\n", __func__);
pdata = NULL;
}
#else /* CONFIG_OF */
pdata = NULL;
#endif /* CONFIG_OF */
if (!pdata) {
dev_err(&i2c->dev, "%s: we didn't support fixed platform_data yet\n", __func__);
return -EINVAL;
}
/* create sm direct-charging instance for PD3.0(PPS) */
if (chip == SM5451_SUB)
pps_dc = sm_dc_create_pd_instance("sm5451-sub-DC", i2c);
else
pps_dc = sm_dc_create_pd_instance("sm5451-PD-DC", i2c);
if (IS_ERR(pps_dc)) {
dev_err(&i2c->dev, "%s: fail to create PD-DC module\n", __func__);
return -ENOMEM;
}
pps_dc->config.ta_min_current = SM5451_TA_MIN_CURRENT;
pps_dc->config.ta_min_voltage = 8200;
pps_dc->config.dc_min_vbat = 3100;
pps_dc->config.dc_vbus_ovp_th = 11000;
pps_dc->config.pps_lr = pdata->pps_lr;
pps_dc->config.rpara = 150000;
pps_dc->config.rsns = 0;
pps_dc->config.rpcm = pdata->rpcm;
pps_dc->config.r_ttl = pdata->r_ttl;
pps_dc->config.topoff_current = pdata->topoff;
pps_dc->config.need_to_sw_ocp = 0;
pps_dc->config.support_pd_remain = 1; /* if pdic can't support PPS remaining, plz activate it. */
pps_dc->config.chg_float_voltage = pdata->battery.chg_float_voltage;
pps_dc->config.sec_dc_name = pdata->battery.sec_dc_name;
pps_dc->ops = &sm5451_dc_pps_ops;
pps_dc->chip_id = chip;
ret = sm_dc_verify_configuration(pps_dc);
if (ret < 0) {
dev_err(&i2c->dev, "%s: fail to verify sm_dc(ret=%d)\n", __func__, ret);
goto err_devmem;
}
sm5451->pps_dc = pps_dc;
if (pdata->x2bat_mode) {
if (chip == SM5451_SUB)
x2bat_dc = sm_dc_create_x2bat_instance("sm5451-x2sub-DC", i2c);
else
x2bat_dc = sm_dc_create_x2bat_instance("sm5451-x2PD-DC", i2c);
if (IS_ERR(x2bat_dc)) {
dev_err(&i2c->dev, "%s: fail to create PD-DC module\n", __func__);
return -ENOMEM;
}
x2bat_dc->config.ta_min_current = SM5451_TA_MIN_CURRENT;
x2bat_dc->config.ta_min_voltage = 8200;
x2bat_dc->config.dc_min_vbat = 3100;
x2bat_dc->config.dc_vbus_ovp_th = 11000;
x2bat_dc->config.r_ttl = pdata->r_ttl;
x2bat_dc->config.topoff_current = pdata->topoff;
x2bat_dc->config.need_to_sw_ocp = 0;
x2bat_dc->config.support_pd_remain = 1; /* if pdic can't support PPS remaining, plz activate it. */
x2bat_dc->config.chg_float_voltage = pdata->battery.chg_float_voltage;
x2bat_dc->config.sec_dc_name = pdata->battery.sec_dc_name;
x2bat_dc->ops = &sm5451_x2bat_dc_pps_ops;
x2bat_dc->chip_id = chip;
ret = sm_dc_verify_configuration(x2bat_dc);
if (ret < 0) {
dev_err(&i2c->dev, "%s: fail to verify sm_dc(ret=%d)\n", __func__, ret);
goto err_devmem;
}
} else {
x2bat_dc = NULL;
}
sm5451->x2bat_dc = x2bat_dc;
sm5451->dev = &i2c->dev;
sm5451->i2c = i2c;
sm5451->pdata = pdata;
sm5451->chip_id = chip;
mutex_init(&sm5451->i2c_lock);
mutex_init(&sm5451->pd_lock);
sm5451->chg_ws = wakeup_source_register(&i2c->dev, "sm5451-charger");
i2c_set_clientdata(i2c, sm5451);
sm5451_hw_init_config(sm5451);
psy_cfg.drv_data = sm5451;
psy_cfg.supplied_to = sm5451_supplied_to;
psy_cfg.num_supplicants = ARRAY_SIZE(sm5451_supplied_to);
if (chip == SM5451_SUB)
sm5451->psy_chg = power_supply_register(sm5451->dev,
&sm5451_charger_power_supply_sub_desc, &psy_cfg);
else
sm5451->psy_chg = power_supply_register(sm5451->dev,
&sm5451_charger_power_supply_desc, &psy_cfg);
if (IS_ERR(sm5451->psy_chg)) {
dev_err(sm5451->dev, "%s: fail to register psy_chg\n", __func__);
ret = PTR_ERR(sm5451->psy_chg);
goto err_devmem;
}
sec_chg_set_dev_init(SC_DEV_DIR_CHG);
if (sm5451->pdata->irq_gpio >= 0) {
ret = sm5451_irq_init(sm5451);
if (ret < 0) {
dev_err(sm5451->dev, "%s: fail to init irq(ret=%d)\n", __func__, ret);
goto err_psy_chg;
}
} else {
dev_warn(sm5451->dev, "%s: didn't assigned irq_gpio\n", __func__);
}
ret = chg_create_attrs(&sm5451->psy_chg->dev);
if (ret)
dev_err(sm5451->dev, "%s : Failed to create_attrs\n", __func__);
ret = sm5451_create_debugfs_entries(sm5451);
if (ret < 0) {
dev_err(sm5451->dev, "%s: fail to create debugfs(ret=%d)\n", __func__, ret);
goto err_psy_chg;
}
dev_info(sm5451->dev, "%s: done. (rev_id=0x%x)[%s]\n", __func__,
sm5451->pdata->rev_id, SM5451_DC_VERSION);
return 0;
err_psy_chg:
power_supply_unregister(sm5451->psy_chg);
err_devmem:
mutex_destroy(&sm5451->i2c_lock);
mutex_destroy(&sm5451->pd_lock);
wakeup_source_unregister(sm5451->chg_ws);
sm_dc_destroy_instance(sm5451->pps_dc);
sm_dc_destroy_instance(sm5451->x2bat_dc);
return ret;
}
static int sm5451_charger_remove(struct i2c_client *i2c)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
sm5451_stop_charging(sm5451);
sm5451_sw_reset(sm5451);
power_supply_unregister(sm5451->psy_chg);
mutex_destroy(&sm5451->i2c_lock);
mutex_destroy(&sm5451->pd_lock);
wakeup_source_unregister(sm5451->chg_ws);
sm_dc_destroy_instance(sm5451->pps_dc);
sm_dc_destroy_instance(sm5451->x2bat_dc);
return 0;
}
static void sm5451_charger_shutdown(struct i2c_client *i2c)
{
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
sm5451_stop_charging(sm5451);
sm5451_reverse_boost_enable(sm5451, false);
}
#if defined(CONFIG_PM)
static int sm5451_charger_suspend(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
if (device_may_wakeup(dev))
enable_irq_wake(sm5451->irq);
disable_irq(sm5451->irq);
return 0;
}
static int sm5451_charger_resume(struct device *dev)
{
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
struct sm5451_charger *sm5451 = i2c_get_clientdata(i2c);
if (device_may_wakeup(dev))
disable_irq_wake(sm5451->irq);
enable_irq(sm5451->irq);
return 0;
}
#else /* CONFIG_PM */
#define sm5451_charger_suspend NULL
#define sm5451_charger_resume NULL
#endif /* CONFIG_PM */
const struct dev_pm_ops sm5451_pm_ops = {
.suspend = sm5451_charger_suspend,
.resume = sm5451_charger_resume,
};
static struct i2c_driver sm5451_charger_driver = {
.driver = {
.name = "sm5451-charger",
.owner = THIS_MODULE,
#if defined(CONFIG_OF)
.of_match_table = sm5451_of_match_table,
#endif /* CONFIG_OF */
#if defined(CONFIG_PM)
.pm = &sm5451_pm_ops,
#endif /* CONFIG_PM */
},
.probe = sm5451_charger_probe,
.remove = sm5451_charger_remove,
.shutdown = sm5451_charger_shutdown,
.id_table = sm5451_charger_id_table,
};
static int __init sm5451_i2c_init(void)
{
pr_info("sm5451-charger: %s\n", __func__);
return i2c_add_driver(&sm5451_charger_driver);
}
module_init(sm5451_i2c_init);
static void __exit sm5451_i2c_exit(void)
{
i2c_del_driver(&sm5451_charger_driver);
}
module_exit(sm5451_i2c_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("SiliconMitus <hwangjoo.jang@SiliconMitus.com>");
MODULE_DESCRIPTION("Charger driver for SM5451");
MODULE_VERSION(SM5451_DC_VERSION);
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