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LeafOS / LeafOS-Devices / android_kernel_samsung_universal7904 / 819a489728cf526f7cd9a29b9182f793b9a3cfdb / . / drivers / battery_v2 / s2mu004_fuelgauge.c
blob: 9eaba18799fcb26b40b5901bb9c061d012ca8c5a [file] [log] [blame]
/*
* s2mu004_fuelgauge.c - S2MU004 Fuel Gauge 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, see <http://www.gnu.org/licenses/>.
*/
#define DEBUG
#define SINGLE_BYTE 1
#define TABLE_SIZE 22
#include "include/fuelgauge/s2mu004_fuelgauge.h"
#include <linux/of_gpio.h>
#include <linux/sec_batt.h>
static enum power_supply_property s2mu004_fuelgauge_props[] = {
};
static int s2mu004_get_vbat(struct s2mu004_fuelgauge_data *fuelgauge);
static int s2mu004_get_ocv(struct s2mu004_fuelgauge_data *fuelgauge);
static int s2mu004_get_current(struct s2mu004_fuelgauge_data *fuelgauge);
static int s2mu004_get_avgcurrent(struct s2mu004_fuelgauge_data *fuelgauge);
static int s2mu004_get_avgvbat(struct s2mu004_fuelgauge_data *fuelgauge);
static int s2mu004_get_monout_avgvbat(struct s2mu004_fuelgauge_data *fuelgauge);
static int s2mu004_write_reg_byte(struct i2c_client *client, int reg, u8 data)
{
int ret, i = 0;
ret = i2c_smbus_write_byte_data(client, reg, data);
if (ret < 0) {
for (i = 0; i < 3; i++) {
ret = i2c_smbus_write_byte_data(client, reg, data);
if (ret >= 0)
break;
}
if (i >= 3)
dev_err(&client->dev, "%s: Error(%d)\n", __func__, ret);
}
return ret;
}
static int s2mu004_write_reg(struct i2c_client *client, int reg, u8 *buf)
{
#if SINGLE_BYTE
int ret = 0;
s2mu004_write_reg_byte(client, reg, buf[0]);
s2mu004_write_reg_byte(client, reg+1, buf[1]);
#else
int ret, i = 0;
ret = i2c_smbus_write_i2c_block_data(client, reg, 2, buf);
if (ret < 0) {
for (i = 0; i < 3; i++) {
ret = i2c_smbus_write_i2c_block_data(client, reg, 2, buf);
if (ret >= 0)
break;
}
if (i >= 3)
dev_err(&client->dev, "%s: Error(%d)\n", __func__, ret);
}
#endif
return ret;
}
static int s2mu004_read_reg_byte(struct i2c_client *client, int reg, void *data)
{
int ret = 0;
ret = i2c_smbus_read_byte_data(client, reg);
if (ret < 0)
return ret;
*(u8 *)data = (u8)ret;
return ret;
}
static int s2mu004_read_reg(struct i2c_client *client, int reg, u8 *buf)
{
#if SINGLE_BYTE
int ret =0;
u8 data1 = 0, data2 = 0;
s2mu004_read_reg_byte(client, reg, &data1);
s2mu004_read_reg_byte(client, reg+1, &data2);
buf[0] = data1;
buf[1] = data2;
#else
int ret = 0, i = 0;
ret = i2c_smbus_read_i2c_block_data(client, reg, 2, buf);
if (ret < 0) {
for (i = 0; i < 3; i++) {
ret = i2c_smbus_read_i2c_block_data(client, reg, 2, buf);
if (ret >= 0)
break;
}
if (i >= 3)
dev_err(&client->dev, "%s: Error(%d)\n", __func__, ret);
}
#endif
return ret;
}
static void s2mu004_fg_test_read(struct i2c_client *client)
{
static int reg_list[] = {
0x03, 0x0E, 0x0F, 0x10, 0x11, 0x1E, 0x1F, 0x21, 0x24, 0x25,
0x26, 0x27, 0x44, 0x45, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D,
0x4E, 0x4F, 0x54, 0x55, 0x56, 0x57
};
u8 data;
char str[1016] = {0,};
int i = 0, reg_list_size = 0;
reg_list_size = ARRAY_SIZE(reg_list);
for (i = 0; i < reg_list_size; i++) {
s2mu004_read_reg_byte(client, reg_list[i], &data);
sprintf(str+strlen(str), "0x%02x:0x%02x, ", reg_list[i], data);
}
/* print buffer */
pr_info("[FG]%s: %s\n", __func__, str);
}
#if defined(CONFIG_S2MU004_MODE_CHANGE_BY_TOPOFF)
int check_current_level(struct s2mu004_fuelgauge_data *fuelgauge)
{
int ret_val = 500;
int temp = 0;
if (fuelgauge->cable_type == SEC_BATTERY_CABLE_USB) {
return ret_val;
}
/* topoff current * 1.6 except USB */
temp = fuelgauge->topoff_current * 16;
ret_val = temp / 10;
return ret_val;
}
#endif
static void WA_0_issue_at_init(struct s2mu004_fuelgauge_data *fuelgauge)
{
int a = 0;
u8 v_4e = 0, v_4f = 0, temp1, temp2;
int FG_volt, UI_volt, offset;
u8 v_40 = 0;
u8 temp_REG26 = 0, temp_REG27 = 0, temp = 0;
u8 data[2], r_data[2];
mutex_lock(&fuelgauge->fg_lock);
s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_IRQ, data);
pr_info("%s: irq_reg data (%02x%02x)\n", __func__, data[1], data[0]);
/* store data for interrupt mask */
r_data[0] = data[0];
r_data[1] = data[1];
/* disable irq for unwanted interrupt */
data[1] |= 0x0f;
s2mu004_write_reg(fuelgauge->i2c, S2MU004_REG_IRQ, data);
/* Step 1: [Surge test] get UI voltage (0.1mV) */
UI_volt = s2mu004_get_ocv(fuelgauge);
/* current fix for soc */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x27, &temp_REG27);
temp = temp_REG27;
temp |= 0x0F;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x27, temp);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x26, &temp_REG26);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x26, 0xFF);
/* avgvbat factor value set to 0xFF */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x40, &v_40);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x40, 0xFF);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1E, 0x0F);
msleep(50);
/* Step 2: [Surge test] get FG voltage (0.1mV) */
FG_volt = s2mu004_get_vbat(fuelgauge) * 10;
/* Step 3: [Surge test] get offset */
offset = UI_volt - FG_volt;
pr_err("%s: UI_volt(%d), FG_volt(%d), offset(%d)\n",
__func__, UI_volt, FG_volt, offset);
/* Step 4: [Surge test] */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4f, &v_4f);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4e, &v_4e);
pr_err("%s: v_4f(0x%x), v_4e(0x%x)\n", __func__, v_4f, v_4e);
a = (v_4f & 0x0F) << 8;
a += v_4e;
pr_err("%s: a before add offset (0x%x)\n", __func__, a);
/* 2`s complement */
if (a & (0x01 << 11))
a = (-10000 * ((a^0xFFF) + 1)) >> 13;
else
a = (10000 * a) >> 13;
a = a + offset;
pr_err("%s: a after add offset (0x%x)\n", __func__, a);
/* limit upper/lower offset */
if (a > 2490)
a = 2490;
if (a < (-2490))
a = -2490;
a = (a << 13) / 10000;
if (a < 0)
a = -1 * ((a^0xFFF) + 1);
pr_err("%s: a after add offset (0x%x)\n", __func__, a);
a &= 0xfff;
pr_err("%s: (a)&0xFFF (0x%x)\n", __func__, a);
/* modify 0x4f[3:0] */
temp1 = v_4f & 0xF0;
temp2 = (u8)((a&0xF00) >> 8);
temp1 |= temp2;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4f, temp1);
/* modify 0x4e[7:0] */
temp2 = (u8)(a & 0xFF);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4e, temp2);
/* restart and dumpdone */
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1E, 0x0F);
msleep(300);
/* restore current register */
s2mu004_write_reg_byte(fuelgauge->i2c, 0x27, temp_REG27);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x26, temp_REG26);
/* recovery 0x4e and 0x4f */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4f, &temp1);
temp1 &= 0xF0;
temp1 |= (v_4f & 0x0F);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4f, temp1);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4e, v_4e);
/* restore monout avgvbat factor value */
s2mu004_write_reg_byte(fuelgauge->i2c, 0x40, v_40);
/* enable irq after reset */
s2mu004_write_reg(fuelgauge->i2c, S2MU004_REG_IRQ, r_data);
pr_info("%s: re-store irq_reg data (%02x%02x)\n", __func__, r_data[1], r_data[0]);
mutex_unlock(&fuelgauge->fg_lock);
}
static int s2mu004_get_soc_from_ocv(struct s2mu004_fuelgauge_data *fuelgauge, int target_ocv)
{
/* 22 values of mapping table for EVT1*/
int *soc_arr;
int *ocv_arr;
int soc = 0;
int ocv = target_ocv * 10;
int high_index = TABLE_SIZE - 1;
int low_index = 0;
int mid_index = 0;
#if defined(CONFIG_BATTERY_AGE_FORECAST)
soc_arr = fuelgauge->age_data_info[fuelgauge->fg_age_step].soc_arr_val;
ocv_arr = fuelgauge->age_data_info[fuelgauge->fg_age_step].ocv_arr_val;
#else
soc_arr = fuelgauge->info.soc_arr_val;
ocv_arr = fuelgauge->info.ocv_arr_val;
#endif
pr_err("%s: soc_arr(%d) ocv_arr(%d)\n", __func__, *soc_arr, *ocv_arr);
if (ocv <= ocv_arr[TABLE_SIZE - 1]) {
soc = soc_arr[TABLE_SIZE - 1];
goto soc_ocv_mapping;
} else if (ocv >= ocv_arr[0]) {
soc = soc_arr[0];
goto soc_ocv_mapping;
}
while (low_index <= high_index) {
mid_index = (low_index + high_index) >> 1;
if (ocv_arr[mid_index] > ocv)
low_index = mid_index + 1;
else if (ocv_arr[mid_index] < ocv)
high_index = mid_index - 1;
else {
soc = soc_arr[mid_index];
goto soc_ocv_mapping;
}
}
soc = soc_arr[high_index];
soc += ((soc_arr[low_index] - soc_arr[high_index]) *
(ocv - ocv_arr[high_index])) /
(ocv_arr[low_index] - ocv_arr[high_index]);
soc_ocv_mapping:
dev_info(&fuelgauge->i2c->dev, "%s: ocv (%d), soc (%d)\n", __func__, ocv, soc);
return soc;
}
static void WA_0_issue_at_init1(struct s2mu004_fuelgauge_data *fuelgauge, int target_ocv)
{
int a = 0;
u8 v_4e = 0, v_4f =0, temp1, temp2;
int FG_volt, UI_volt, offset;
u8 v_40 = 0;
u8 temp_REG26 = 0, temp_REG27 = 0, temp = 0;
if ((fuelgauge->temperature <= (int)fuelgauge->low_temp_limit) && (!(fuelgauge->info.soc <= 500))) {
pr_info("%s : Skip F/G reset in low temperatures\n", __func__);
fuelgauge->vbatl_mode = VBATL_MODE_SW_VALERT;
return;
}
mutex_lock(&fuelgauge->fg_lock);
/* Step 1: [Surge test] get UI voltage (0.1mV) */
UI_volt = target_ocv * 10;
/* avgvbat factor value set to 0xFF */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x40, &v_40);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x40, 0xFF);
/* current fix for soc */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x27, &temp_REG27);
temp=temp_REG27;
temp |= 0x0F;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x27, temp);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x26, &temp_REG26);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x26, 0xFF);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1E, 0x0F);
msleep(50);
/* Step 2: [Surge test] get FG voltage (0.1mV) */
FG_volt = s2mu004_get_vbat(fuelgauge) * 10;
/* Step 3: [Surge test] get offset */
offset = UI_volt - FG_volt;
pr_err("%s: UI_volt(%d), FG_volt(%d), offset(%d)\n",
__func__, UI_volt, FG_volt, offset);
/* Step 4: [Surge test] */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4f, &v_4f);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4e, &v_4e);
pr_err("%s: v_4f(0x%x), v_4e(0x%x)\n", __func__, v_4f, v_4e);
a = (v_4f & 0x0F) << 8;
a += v_4e;
pr_err("%s: a before add offset (0x%x)\n", __func__, a);
/* 2`s complement */
if (a & (0x01 << 11))
a = (-10000 * ((a^0xFFF) + 1)) >> 13;
else
a = (10000 * a) >> 13;
a = a + offset;
pr_err("%s: a after add offset (0x%x)\n", __func__, a);
/* limit upper/lower offset */
if (a > 2490)
a = 2490;
if (a < (-2490))
a = -2490;
a = (a << 13) / 10000;
if (a < 0)
a = -1*((a^0xFFF)+1);
pr_err("%s: a after add offset (0x%x)\n", __func__, a);
a &= 0xfff;
pr_err("%s: (a)&0xFFF (0x%x)\n", __func__, a);
/* modify 0x4f[3:0] */
temp1 = v_4f & 0xF0;
temp2 = (u8)((a&0xF00) >> 8);
temp1 |= temp2;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4f, temp1);
/* modify 0x4e[7:0] */
temp2 = (u8)(a & 0xFF);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4e, temp2);
/* restart and dumpdone */
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1E, 0x0F);
msleep(300);
/* restore current register */
s2mu004_write_reg_byte(fuelgauge->i2c, 0x27, temp_REG27);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x26, temp_REG26);
pr_info("%s: S2MU004 VBAT : %d\n", __func__, s2mu004_get_vbat(fuelgauge) * 10);
/* recovery 0x4e and 0x4f */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4f, &temp1);
temp1 &= 0xF0;
temp1 |= (v_4f & 0x0F);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4f, temp1);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4e, v_4e);
/* restore monout avgvbat factor value */
s2mu004_write_reg_byte(fuelgauge->i2c, 0x40, v_40);
mutex_unlock(&fuelgauge->fg_lock);
}
static void s2mu004_reset_fg(struct s2mu004_fuelgauge_data *fuelgauge)
{
int i;
u8 temp = 0;
#if defined(CONFIG_BATTERY_AGE_FORECAST)
mutex_lock(&fuelgauge->fg_lock);
#endif
/* step 0: [Surge test] initialize register of FG */
#if defined(CONFIG_BATTERY_AGE_FORECAST)
s2mu004_write_reg_byte(fuelgauge->i2c, 0x0E,
fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[0]);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x0F,
fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[1]);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x10,
fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[2]);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x11,
fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[3]);
#if defined(CONFIG_S2MU004_MODE_CHANGE_BY_TOPOFF)
s2mu004_write_reg_byte(fuelgauge->i2c, 0x13,
fuelgauge->age_data_info[fuelgauge->fg_age_step].volt_mode_tunning);
#endif
for (i = 0x92; i <= 0xe9; i++) {
s2mu004_write_reg_byte(fuelgauge->i2c, i,
fuelgauge->age_data_info[fuelgauge->fg_age_step].battery_table3[i - 0x92]);
}
for (i = 0xea; i <= 0xff; i++) {
s2mu004_write_reg_byte(fuelgauge->i2c, i,
fuelgauge->age_data_info[fuelgauge->fg_age_step].battery_table4[i - 0xea]);
}
#else
s2mu004_write_reg_byte(fuelgauge->i2c, 0x0E, fuelgauge->info.batcap[0]);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x0F, fuelgauge->info.batcap[1]);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x10, fuelgauge->info.batcap[2]);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x11, fuelgauge->info.batcap[3]);
for (i = 0x92; i <= 0xe9; i++) {
s2mu004_write_reg_byte(fuelgauge->i2c, i, fuelgauge->info.battery_table3[i - 0x92]);
}
for (i = 0xea; i <= 0xff; i++) {
s2mu004_write_reg_byte(fuelgauge->i2c, i, fuelgauge->info.battery_table4[i - 0xea]);
}
#endif
s2mu004_write_reg_byte(fuelgauge->i2c, 0x21, 0x13);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x14, 0x40);
#if defined(CONFIG_BATTERY_AGE_FORECAST)
s2mu004_read_reg_byte(fuelgauge->i2c, 0x45, &temp);
temp &= 0xF0;
temp |= fuelgauge->age_data_info[fuelgauge->fg_age_step].accum[0];
s2mu004_write_reg_byte(fuelgauge->i2c, 0x45, temp);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x44,
fuelgauge->age_data_info[fuelgauge->fg_age_step].accum[1]);
#else
s2mu004_read_reg_byte(fuelgauge->i2c, 0x45, &temp);
temp &= 0xF0;
temp |= fuelgauge->info.accum[0];
s2mu004_write_reg_byte(fuelgauge->i2c, 0x45, temp);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x44, fuelgauge->info.accum[1]);
#endif
s2mu004_read_reg_byte(fuelgauge->i2c, 0x27, &temp);
temp |= 0x10;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x27, temp);
/* Interrupt source reference at mixed mode */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x43, &temp);
temp &= 0xF3;
temp |= 0x08;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x43, temp);
/* Charger top off current sensing method change for int. 0x49[7]=0 */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x49, &temp);
temp &= 0x7F;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x49, temp);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4B, 0x0B);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4A, 0x10);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x03, &temp);
temp |= 0x10;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x03, temp);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x40, 0x08);
#if defined(CONFIG_BATTERY_AGE_FORECAST)
mutex_unlock(&fuelgauge->fg_lock);
#endif
WA_0_issue_at_init(fuelgauge);
/*After FG reset current battery data version get reset to default value 1, causing mismatch in bootloader and kernel FG data verion.
Below code restores the FG data version in 0x48 register to it's initalized value.*/
pr_info("%s: FG data version %02x\n", __func__, fuelgauge->info.data_ver);
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_FG_ID, &temp);
temp &= 0xF0;
temp |= fuelgauge->info.data_ver;
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_FG_ID, temp);
pr_err("%s: Reset FG completed\n", __func__);
}
static void s2mu004_restart_gauging(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 temp=0, temp_REG26=0, temp_REG27=0;
u8 data[2], r_data[2];
u8 v_40;
pr_err("%s: Re-calculate SOC and voltage\n", __func__);
mutex_lock(&fuelgauge->fg_lock);
if (s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_IRQ, data) < 0)
pr_err("%s: Read Fail\n", __func__);
pr_info("%s: irq_reg data (%02x%02x)\n", __func__, data[1], data[0]);
/* store data for interrupt mask */
r_data[0] = data[0];
r_data[1] = data[1];
/* disable irq for unwanted interrupt */
data[1] |= 0x0f;
s2mu004_write_reg(fuelgauge->i2c, S2MU004_REG_IRQ, data);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x27, &temp_REG27);
temp = temp_REG27;
temp |= 0x0F;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x27, temp);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x26, &temp_REG26);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x26, 0xFF);
/* avgvbat factor value set to 0xFF */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x40, &v_40);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x40, 0xFF);
/* restart gauge */
//s2mu004_write_reg_byte(fuelgauge->i2c, 0x1f, 0x01);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x21, 0x13);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1E, 0x0F);
msleep(300);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x27, temp_REG27);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x26, temp_REG26);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x27, &temp);
pr_info("%s: 0x27 : %02x\n", __func__, temp);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x26, &temp);
pr_info("%s: 0x26 : %02x\n", __func__, temp);
/* restore monout avgvbat factor value */
s2mu004_write_reg_byte(fuelgauge->i2c, 0x40, v_40);
/* enable irq after reset */
s2mu004_write_reg(fuelgauge->i2c, S2MU004_REG_IRQ, r_data);
pr_info("%s: re-store irq_reg data (%02x%02x)\n", __func__, r_data[1], r_data[0]);
mutex_unlock(&fuelgauge->fg_lock);
}
static void s2mu004_init_regs(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 temp = 0;
pr_err("%s: s2mu004 fuelgauge initialize\n", __func__);
/* Reduce top-off current difference between
* Power on charging and Power off charging
*/
s2mu004_read_reg_byte(fuelgauge->i2c, 0x27, &temp);
temp |= 0x10;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x27, temp);
/* Interrupt source reference at mixed mode */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x43, &temp);
temp &= 0xF3;
temp |= 0x08;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x43, temp);
/* Charger top off current sensing method change for int. 0x49[7]=0 */
s2mu004_read_reg_byte(fuelgauge->i2c, 0x49, &temp);
temp &= 0x7F;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x49, temp);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4F, &temp);
fuelgauge->reg_OTP_4F = temp;
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4E, &temp);
fuelgauge->reg_OTP_4E = temp;
}
static void s2mu004_alert_init(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data[2];
/* VBAT Threshold setting */
data[0] = ((fuelgauge->pdata->fuel_alert_vol - 2800) / 50) & 0x0f;
/* SOC Threshold setting */
data[0] = data[0] | (fuelgauge->pdata->fuel_alert_soc << 4);
data[1] = 0x00;
s2mu004_write_reg(fuelgauge->i2c, S2MU004_REG_IRQ_LVL, data);
pr_info("%s: irq_lvl(vbat:0x%x, soc:0x%x)\n", __func__, data[0] & 0x0F, data[0] & 0xF0);
}
static int s2mu004_set_temperature(struct s2mu004_fuelgauge_data *fuelgauge,
int temperature)
{
/*
* s5mu005 include temperature sensor so,
* do not need to set temperature value.
*/
return temperature;
}
static int s2mu004_get_temperature(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data[2];
u16 compliment;
s32 temperature = 0;
/*
* use monitor regiser.
* monitor register default setting is temperature
*/
mutex_lock(&fuelgauge->fg_lock);
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_MONOUT_SEL, 0x10);
if (s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_MONOUT, data) < 0)
goto err;
mutex_unlock(&fuelgauge->fg_lock);
compliment = (data[1] << 8) | (data[0]);
/* data[] store 2's compliment format number */
if (compliment & (0x1 << 15)) {
/* Negative */
temperature = -1 * ((~compliment & 0xFFFF) + 1);
} else {
temperature = compliment & 0x7FFF;
}
temperature = ((temperature * 100) >> 8)/10;
dev_dbg(&fuelgauge->i2c->dev, "%s: temperature (%d)\n",
__func__, temperature);
return temperature;
err:
mutex_unlock(&fuelgauge->fg_lock);
return -ERANGE;
}
static int s2mu004_get_rawsoc(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data[2], check_data[2];
u16 compliment;
int rsoc, i;
u8 por_state = 0;
u8 reg = S2MU004_REG_RSOC;
u8 reg_OTP_4E = 0, reg_OTP_4F = 0;
int fg_reset = 0;
bool charging_enabled = false;
union power_supply_propval value;
int force_power_off_voltage = 0;
int rbat = 0;
int avg_current = 0, avg_vbat = 0, vbat = 0, curr = 0, avg_monout_vbat = 0;
int ocv_pwroff = 0, ocv_pwr_voltagemode =0;
int target_soc = 0;
int float_voltage = 0;
/* SOC VM Monitoring For debugging SOC error */
u8 r_monoutsel;
u8 mount_data[2];
u32 mount_compliment;
int rvmsoc;
#if !defined(CONFIG_SEC_FACTORY)
int info_soc;
#endif
s2mu004_read_reg_byte(fuelgauge->i2c, 0x1F, &por_state);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4F, &reg_OTP_4F);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4E, &reg_OTP_4E);
dev_err(&fuelgauge->i2c->dev, "%s: OTP 4E(%02x) 4F(%02x) current 4E(%02x) 4F(%02x)\n",
__func__, fuelgauge->reg_OTP_4E, fuelgauge->reg_OTP_4F, reg_OTP_4E, reg_OTP_4F);
#if defined(CONFIG_BATTERY_AGE_FORECAST)
if (((por_state & 0x10) && (fuelgauge->age_reset_status == 0)) ||
(fuelgauge->probe_done == true &&
(fuelgauge->reg_OTP_4E != reg_OTP_4E || fuelgauge->reg_OTP_4F != reg_OTP_4F)))
#else
if ((por_state & 0x10) ||
(fuelgauge->probe_done == true &&
(fuelgauge->reg_OTP_4E != reg_OTP_4E || fuelgauge->reg_OTP_4F != reg_OTP_4F)))
#endif
{
/* check charging enable */
psy_do_property("s2mu004-charger", get, POWER_SUPPLY_PROP_CHARGING_ENABLED, value);
charging_enabled = value.intval;
value.intval = SEC_BAT_CHG_MODE_CHARGING_OFF;
psy_do_property("s2mu004-charger", set, POWER_SUPPLY_PROP_CHARGING_ENABLED, value);
if (fuelgauge->reg_OTP_4E != reg_OTP_4E || fuelgauge->reg_OTP_4F != reg_OTP_4F) {
psy_do_property("s2mu004-charger", set, POWER_SUPPLY_EXT_PROP_FUELGAUGE_RESET, value);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1F, 0x40);
msleep(50);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1F, 0x01);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4F, &reg_OTP_4F);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x4E, &reg_OTP_4E);
dev_err(&fuelgauge->i2c->dev, "1st reset after %s: OTP 4E(%02x) 4F(%02x) current 4E(%02x) 4F(%02x)\n",
__func__, fuelgauge->reg_OTP_4E, fuelgauge->reg_OTP_4F, reg_OTP_4E, reg_OTP_4F);
if (fuelgauge->reg_OTP_4E != reg_OTP_4E || fuelgauge->reg_OTP_4F != reg_OTP_4F) {
psy_do_property("s2mu004-charger", set, POWER_SUPPLY_EXT_PROP_FUELGAUGE_RESET, value);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1F, 0x40);
msleep(50);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1F, 0x01);
dev_err(&fuelgauge->i2c->dev, "%s : 2st reset\n", __func__);
}
}
dev_info(&fuelgauge->i2c->dev, "%s: FG reset\n", __func__);
s2mu004_reset_fg(fuelgauge);
por_state &= ~0x10;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1F, por_state);
fg_reset = 1;
}
mutex_lock(&fuelgauge->fg_lock);
reg = S2MU004_REG_RSOC;
for (i = 0; i < 50; i++) {
if (s2mu004_read_reg(fuelgauge->i2c, reg, data) < 0)
goto err;
if (s2mu004_read_reg(fuelgauge->i2c, reg, check_data) < 0)
goto err;
dev_dbg(&fuelgauge->i2c->dev, "[DEBUG]%s: data0 (%d) data1 (%d)\n", __func__, data[0], data[1]);
if ((data[0] == check_data[0]) && (data[1] == check_data[1]))
break;
}
/* SOC VM Monitoring For debugging SOC error */
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_MONOUT_SEL, &r_monoutsel);
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_MONOUT_SEL, 0x02);
msleep(10);
if (s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_MONOUT, mount_data) < 0)
return -EINVAL;
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_MONOUT_SEL, r_monoutsel);
mutex_unlock(&fuelgauge->fg_lock);
/* SOC VM Monitoring For debugging SOC error */
mount_compliment = ((mount_data[0] + (mount_data[1] << 8)) * 10000) >> 12;
rvmsoc = mount_compliment;
dev_dbg(&fuelgauge->i2c->dev, "%s: vm soc raw data0 (%d) data1 (%d)\n",
__func__, mount_data[0], mount_data[1]);
dev_info(&fuelgauge->i2c->dev, "%s: vm soc (%d)\n", __func__, rvmsoc);
if (fg_reset && charging_enabled) {
value.intval = SEC_BAT_CHG_MODE_CHARGING;
psy_do_property("s2mu004-charger", set, POWER_SUPPLY_PROP_CHARGING_ENABLED, value);
}
compliment = (data[1] << 8) | (data[0]);
/* data[] store 2's compliment format number */
if (compliment & (0x1 << 15)) {
/* Negative */
rsoc = ((~compliment) & 0xFFFF) + 1;
rsoc = (rsoc * (-10000)) / (0x1 << 14);
} else {
rsoc = compliment & 0x7FFF;
rsoc = ((rsoc * 10000) / (0x1 << 14));
}
if (fg_reset)
fuelgauge->diff_soc = fuelgauge->info.soc - rsoc;
dev_info(&fuelgauge->i2c->dev, "%s: current_soc (%d), previous soc (%d), diff (%d), FG_mode(%d)\n",
__func__, rsoc, fuelgauge->info.soc, fuelgauge->diff_soc, fuelgauge->mode);
fuelgauge->info.soc = rsoc + fuelgauge->diff_soc;
avg_current = s2mu004_get_avgcurrent(fuelgauge);
avg_monout_vbat = s2mu004_get_monout_avgvbat(fuelgauge);
ocv_pwr_voltagemode = avg_monout_vbat - avg_current * 30 / 100;
if (avg_current < (-500))
rbat = 10;
else
rbat = 30;
ocv_pwr_voltagemode = avg_monout_vbat - avg_current * rbat / 100;
/* switch to voltage mocd for accuracy */
if ((fuelgauge->info.soc <= 300) || ((ocv_pwr_voltagemode <= 3600) && (avg_current < 10))) {
if (fuelgauge->mode == CURRENT_MODE) { /* switch to VOLTAGE_MODE */
fuelgauge->mode = LOW_SOC_VOLTAGE_MODE;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4A, 0xFF);
dev_info(&fuelgauge->i2c->dev, "%s: FG is in low soc voltage mode\n", __func__);
}
} else if ((fuelgauge->info.soc > 325) && ((ocv_pwr_voltagemode > 3650) || (avg_current >= 10))) {
if (fuelgauge->mode == LOW_SOC_VOLTAGE_MODE) {
fuelgauge->mode = CURRENT_MODE;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4A, 0x10);
dev_info(&fuelgauge->i2c->dev, "%s: FG is in current mode\n", __func__);
}
}
avg_vbat = s2mu004_get_avgvbat(fuelgauge);
vbat = s2mu004_get_vbat(fuelgauge);
curr = s2mu004_get_current(fuelgauge);
psy_do_property("s2mu004-charger", get, POWER_SUPPLY_PROP_VOLTAGE_MAX, value);
float_voltage = value.intval;
float_voltage = (float_voltage * 996) / 1000;
psy_do_property("battery", get, POWER_SUPPLY_PROP_CAPACITY, value);
dev_info(&fuelgauge->i2c->dev, "%s: UI SOC = %d\n", __func__, value.intval);
#if defined(CONFIG_S2MU004_MODE_CHANGE_BY_TOPOFF)
if (fuelgauge->is_charging == true) {
if ((value.intval >= 98) ||
((avg_vbat > float_voltage) && (avg_current < check_current_level(fuelgauge)))) {
if (fuelgauge->mode == CURRENT_MODE) { /* switch to VOLTAGE_MODE */
fuelgauge->mode = HIGH_SOC_VOLTAGE_MODE;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4A, 0xFF);
dev_info(&fuelgauge->i2c->dev, "%s: FG is in high soc voltage mode\n", __func__);
}
}
} else if (avg_current < -50 || (avg_current >= (check_current_level(fuelgauge) + 50))) {
#else
if ((value.intval >= 98) ||
((fuelgauge->is_charging == true) &&
(avg_vbat > float_voltage) && avg_current < 500)) {
if (fuelgauge->mode == CURRENT_MODE) { /* switch to VOLTAGE_MODE */
fuelgauge->mode = HIGH_SOC_VOLTAGE_MODE;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4A, 0xFF);
dev_info(&fuelgauge->i2c->dev, "%s: FG is in high soc voltage mode\n", __func__);
}
}
else if (((avg_current > 550) && (value.intval < 97)) ||
((avg_current < 10) && (value.intval < 97))) {
#endif
if (fuelgauge->mode == HIGH_SOC_VOLTAGE_MODE) {
fuelgauge->mode = CURRENT_MODE;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x4A, 0x10);
dev_info(&fuelgauge->i2c->dev, "%s: FG is in current mode\n", __func__);
}
}
psy_do_property("battery", get, POWER_SUPPLY_PROP_TEMP, value);
fuelgauge->temperature = value.intval;
if (fuelgauge->temperature <= (-150))
force_power_off_voltage = 3550;
else
force_power_off_voltage = 3300;
dev_info(&fuelgauge->i2c->dev,
"%s: Fuelgauge Mode: %d, Force power-off voltage: %d\n",
__func__, fuelgauge->mode, force_power_off_voltage);
if (((avg_current < (-17)) && (curr < (-17))) &&
((avg_monout_vbat - avg_current * rbat / 100) <= 3500) && (fuelgauge->info.soc > 100)) {
ocv_pwroff = 3300;
target_soc = s2mu004_get_soc_from_ocv(fuelgauge, ocv_pwroff);
pr_info("%s : F/G reset Start - current flunctuation\n", __func__);
WA_0_issue_at_init1(fuelgauge, ocv_pwroff);
} else if (avg_current < (-60) && avg_vbat <= force_power_off_voltage) {
if (fuelgauge->mode == CURRENT_MODE) {
if (abs(avg_vbat - vbat) <= 20 && abs(avg_current - curr) <= 30) {
ocv_pwroff = avg_vbat - avg_current * 15 / 100;
target_soc = s2mu004_get_soc_from_ocv(fuelgauge, ocv_pwroff);
if (abs(target_soc - fuelgauge->info.soc) > 300) {
pr_info("%s : F/G reset Start - current mode: %d\n",
__func__, target_soc);
WA_0_issue_at_init1(fuelgauge, ocv_pwroff);
}
}
} else {
if (abs(avg_vbat - vbat) <= 20) {
ocv_pwroff = avg_vbat;
target_soc = s2mu004_get_soc_from_ocv(fuelgauge, ocv_pwroff);
if (abs(target_soc - fuelgauge->info.soc) > 300) {
pr_info("%s : F/G reset Start\n", __func__);
WA_0_issue_at_init1(fuelgauge, ocv_pwroff);
}
}
}
}
#if !defined(CONFIG_SEC_FACTORY)
info_soc = fuelgauge->info.soc/100;
if (info_soc > 93) {
value.intval = 0; /* digital ivr */
psy_do_property("s2mu004-charger", set, POWER_SUPPLY_EXT_PROP_ANDIG_IVR_SWITCH, value);
} else {
value.intval = 1; /* analog ivr */
psy_do_property("s2mu004-charger", set, POWER_SUPPLY_EXT_PROP_ANDIG_IVR_SWITCH, value);
}
#endif
/* S2MU004 FG debug */
if (fuelgauge->pdata->fg_log_enable)
s2mu004_fg_test_read(fuelgauge->i2c);
return min(fuelgauge->info.soc, 10000);
err:
mutex_unlock(&fuelgauge->fg_lock);
return -EINVAL;
}
static int s2mu004_get_current(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data[2];
u16 compliment;
int curr = 0;
if (s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_RCUR_CC, data) < 0)
return -EINVAL;
compliment = (data[1] << 8) | (data[0]);
dev_dbg(&fuelgauge->i2c->dev, "%s: rCUR_CC(0x%4x)\n", __func__, compliment);
if (compliment & (0x1 << 15)) { /* Charging */
curr = ((~compliment) & 0xFFFF) + 1;
curr = (curr * 1000) >> 12;
} else { /* dischaging */
curr = compliment & 0x7FFF;
curr = (curr * (-1000)) >> 12;
}
dev_info(&fuelgauge->i2c->dev, "%s: current (%d)mA\n", __func__, curr);
return curr;
}
#define TABLE_SIZE 22
static int s2mu004_get_ocv(struct s2mu004_fuelgauge_data *fuelgauge)
{
/* 22 values of mapping table for EVT1*/
int *soc_arr;
int *ocv_arr;
int soc = fuelgauge->info.soc;
int ocv = 0;
int high_index = TABLE_SIZE - 1;
int low_index = 0;
int mid_index = 0;
#if defined(CONFIG_BATTERY_AGE_FORECAST)
soc_arr = fuelgauge->age_data_info[fuelgauge->fg_age_step].soc_arr_val;
ocv_arr = fuelgauge->age_data_info[fuelgauge->fg_age_step].ocv_arr_val;
#else
soc_arr = fuelgauge->info.soc_arr_val;
ocv_arr = fuelgauge->info.ocv_arr_val;
#endif
dev_err(&fuelgauge->i2c->dev,
"%s: soc (%d) soc_arr[TABLE_SIZE-1] (%d) ocv_arr[TABLE_SIZE-1) (%d)\n",
__func__, soc, soc_arr[TABLE_SIZE-1], ocv_arr[TABLE_SIZE-1]);
if (soc <= soc_arr[TABLE_SIZE - 1]) {
ocv = ocv_arr[TABLE_SIZE - 1];
goto ocv_soc_mapping;
} else if (soc >= soc_arr[0]) {
ocv = ocv_arr[0];
goto ocv_soc_mapping;
}
while (low_index <= high_index) {
mid_index = (low_index + high_index) >> 1;
if (soc_arr[mid_index] > soc)
low_index = mid_index + 1;
else if (soc_arr[mid_index] < soc)
high_index = mid_index - 1;
else {
ocv = ocv_arr[mid_index];
goto ocv_soc_mapping;
}
}
ocv = ocv_arr[high_index];
ocv += ((ocv_arr[low_index] - ocv_arr[high_index]) *
(soc - soc_arr[high_index])) /
(soc_arr[low_index] - soc_arr[high_index]);
ocv_soc_mapping:
dev_info(&fuelgauge->i2c->dev, "%s: soc (%d), ocv (%d)\n", __func__, soc, ocv);
return ocv;
}
static int s2mu004_get_avgcurrent(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data[2];
u16 compliment;
int curr = 0;
mutex_lock(&fuelgauge->fg_lock);
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_MONOUT_SEL, 0x26);
if (s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_MONOUT, data) < 0)
goto err;
compliment = (data[1] << 8) | (data[0]);
if (compliment & (0x1 << 15)) { /* Charging */
curr = ((~compliment) & 0xFFFF) + 1;
curr = (curr * 1000) >> 12;
} else { /* dischaging */
curr = compliment & 0x7FFF;
curr = (curr * (-1000)) >> 12;
}
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_MONOUT_SEL, 0x10);
mutex_unlock(&fuelgauge->fg_lock);
dev_info(&fuelgauge->i2c->dev, "%s: MONOUT(0x%4x), avg current (%d)mA\n",
__func__, compliment, curr);
dev_info(&fuelgauge->i2c->dev, "%s: SOC(%d)%%\n", __func__, fuelgauge->info.soc);
return curr;
err:
mutex_unlock(&fuelgauge->fg_lock);
return -EINVAL;
}
static int s2mu004_maintain_avgcurrent(
struct s2mu004_fuelgauge_data *fuelgauge)
{
static int cnt;
int vcell = 0;
int curr = 0;
curr = s2mu004_get_avgcurrent(fuelgauge);
vcell = s2mu004_get_vbat(fuelgauge);
if ((cnt < 10) && (curr < 0) && (fuelgauge->is_charging) &&
(vcell < 3500)) {
curr = 1;
cnt++;
dev_info(&fuelgauge->i2c->dev, "%s: vcell (%d)mV, modified avg current (%d)mA\n",
__func__, vcell, curr);
}
return curr;
}
static int s2mu004_get_vbat(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data[2];
u8 vbat_src;
u32 vbat = 0;
if (s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_RVBAT, data) < 0)
return -EINVAL;
dev_dbg(&fuelgauge->i2c->dev, "%s: data0 (%d) data1 (%d)\n", __func__, data[0], data[1]);
vbat = ((data[0] + (data[1] << 8)) * 1000) >> 13;
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_CTRL0, &vbat_src);
dev_info(&fuelgauge->i2c->dev, "%s: vbat (%d), src (0x%02X)\n",
__func__, vbat, (vbat_src & 0x30) >> 4);
return vbat;
}
static int s2mu004_get_monout_avgvbat(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data[2];
u16 compliment, avg_vbat;
mutex_lock(&fuelgauge->fg_lock);
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_MONOUT_SEL, 0x27);
msleep(50);
if (s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_MONOUT, data) < 0)
goto err;
compliment = (data[1] << 8) | (data[0]);
avg_vbat = (compliment * 1000) >> 12;
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_MONOUT_SEL, 0x10);
mutex_unlock(&fuelgauge->fg_lock);
dev_info(&fuelgauge->i2c->dev, "%s: avgvbat (%d)\n", __func__, avg_vbat);
return avg_vbat;
err:
mutex_unlock(&fuelgauge->fg_lock);
return -EINVAL;
}
static int s2mu004_get_avgvbat(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data[2];
u32 new_vbat, old_vbat = 0;
int cnt;
for (cnt = 0; cnt < 5; cnt++) {
if (s2mu004_read_reg(fuelgauge->i2c, S2MU004_REG_RVBAT, data) < 0)
return -EINVAL;
new_vbat = ((data[0] + (data[1] << 8)) * 1000) >> 13;
if (cnt == 0)
old_vbat = new_vbat;
else
old_vbat = new_vbat / 2 + old_vbat / 2;
}
dev_info(&fuelgauge->i2c->dev, "%s: avgvbat (%d)\n", __func__, old_vbat);
if ((fuelgauge->vbatl_mode == VBATL_MODE_SW_VALERT) &&
(fuelgauge->temperature > (int)fuelgauge->low_temp_limit) &&
(old_vbat >= fuelgauge->sw_vbat_l_recovery_vol)) {
fuelgauge->vbatl_mode = VBATL_MODE_SW_RECOVERY;
pr_info("%s : Recover from VBAT_L Activation\n", __func__);
}
return old_vbat;
}
/* capacity is 0.1% unit */
static void s2mu004_fg_get_scaled_capacity(
struct s2mu004_fuelgauge_data *fuelgauge,
union power_supply_propval *val)
{
int rawsoc = val->intval;
val->intval = (val->intval < fuelgauge->pdata->capacity_min) ?
0 : ((val->intval - fuelgauge->pdata->capacity_min) * 1000 /
(fuelgauge->capacity_max - fuelgauge->pdata->capacity_min));
dev_info(&fuelgauge->i2c->dev,
"%s: capacity_max(%d) scaled capacity(%d.%d), raw_soc(%d.%d)\n",
__func__, fuelgauge->capacity_max,
val->intval/10, val->intval%10, rawsoc/10, rawsoc%10);
}
/* capacity is integer */
static void s2mu004_fg_get_atomic_capacity(
struct s2mu004_fuelgauge_data *fuelgauge,
union power_supply_propval *val)
{
if (fuelgauge->pdata->capacity_calculation_type &
SEC_FUELGAUGE_CAPACITY_TYPE_ATOMIC) {
if (fuelgauge->capacity_old < val->intval)
val->intval = fuelgauge->capacity_old + 1;
else if (fuelgauge->capacity_old > val->intval)
val->intval = fuelgauge->capacity_old - 1;
}
/* keep SOC stable in abnormal status */
if (fuelgauge->pdata->capacity_calculation_type &
SEC_FUELGAUGE_CAPACITY_TYPE_SKIP_ABNORMAL) {
if (!fuelgauge->is_charging &&
fuelgauge->capacity_old < val->intval) {
dev_err(&fuelgauge->i2c->dev,
"%s: capacity (old %d : new %d)\n",
__func__, fuelgauge->capacity_old, val->intval);
val->intval = fuelgauge->capacity_old;
}
}
/* updated old capacity */
fuelgauge->capacity_old = val->intval;
}
static int s2mu004_fg_check_capacity_max(
struct s2mu004_fuelgauge_data *fuelgauge, int capacity_max)
{
int new_capacity_max = capacity_max;
if (new_capacity_max < (fuelgauge->pdata->capacity_max -
fuelgauge->pdata->capacity_max_margin - 10)) {
new_capacity_max =
(fuelgauge->pdata->capacity_max -
fuelgauge->pdata->capacity_max_margin);
dev_info(&fuelgauge->i2c->dev, "%s: set capacity max(%d --> %d)\n",
__func__, capacity_max, new_capacity_max);
} else if (new_capacity_max > (fuelgauge->pdata->capacity_max +
fuelgauge->pdata->capacity_max_margin)) {
new_capacity_max =
(fuelgauge->pdata->capacity_max +
fuelgauge->pdata->capacity_max_margin);
dev_info(&fuelgauge->i2c->dev, "%s: set capacity max(%d --> %d)\n",
__func__, capacity_max, new_capacity_max);
}
return new_capacity_max;
}
static int s2mu004_fg_calculate_dynamic_scale(
struct s2mu004_fuelgauge_data *fuelgauge, int capacity)
{
union power_supply_propval raw_soc_val;
raw_soc_val.intval = s2mu004_get_rawsoc(fuelgauge) / 10;
if (raw_soc_val.intval <
fuelgauge->pdata->capacity_max -
fuelgauge->pdata->capacity_max_margin) {
fuelgauge->capacity_max =
fuelgauge->pdata->capacity_max -
fuelgauge->pdata->capacity_max_margin;
dev_dbg(&fuelgauge->i2c->dev, "%s: capacity_max (%d)",
__func__, fuelgauge->capacity_max);
} else {
fuelgauge->capacity_max =
(raw_soc_val.intval >
fuelgauge->pdata->capacity_max +
fuelgauge->pdata->capacity_max_margin) ?
(fuelgauge->pdata->capacity_max +
fuelgauge->pdata->capacity_max_margin) :
raw_soc_val.intval;
dev_dbg(&fuelgauge->i2c->dev, "%s: raw soc (%d)",
__func__, fuelgauge->capacity_max);
}
if (capacity != 100) {
fuelgauge->capacity_max = s2mu004_fg_check_capacity_max(
fuelgauge, (fuelgauge->capacity_max * 100 / (capacity + 1)));
} else {
fuelgauge->capacity_max =
(fuelgauge->capacity_max * 99 / 100);
}
/* update capacity_old for sec_fg_get_atomic_capacity algorithm */
fuelgauge->capacity_old = capacity;
dev_info(&fuelgauge->i2c->dev, "%s: %d is used for capacity_max\n",
__func__, fuelgauge->capacity_max);
return fuelgauge->capacity_max;
}
bool s2mu004_fuelgauge_fuelalert_init(struct i2c_client *client, int soc)
{
struct s2mu004_fuelgauge_data *fuelgauge = i2c_get_clientdata(client);
u8 data[2];
fuelgauge->is_fuel_alerted = false;
/* 1. Set s2mu004 alert configuration. */
s2mu004_alert_init(fuelgauge);
if (s2mu004_read_reg(client, S2MU004_REG_IRQ, data) < 0)
return -1;
/*Enable VBAT, SOC */
data[1] &= 0xfc;
/*Disable IDLE_ST, INIT)ST */
data[1] |= 0x0c;
s2mu004_write_reg(client, S2MU004_REG_IRQ, data);
dev_dbg(&client->dev, "%s: irq_reg(%02x%02x) irq(%d)\n",
__func__, data[1], data[0], fuelgauge->pdata->fg_irq);
return true;
}
static void s2mu004_fg_reset_capacity_by_jig_connection(struct s2mu004_fuelgauge_data *fuelgauge)
{
u8 data = 0;
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_FG_ID, &data);
data &= 0xF0;
data |= 0x0F; //set model data version 0xF for next boot up initializing fuelgague
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_FG_ID, data);
pr_info("%s: set Model data version (0x%x)\n", __func__, data & 0x0F);
}
#if defined(CONFIG_BATTERY_AGE_FORECAST)
static int s2mu004_fg_aging_check(
struct s2mu004_fuelgauge_data *fuelgauge, int step)
{
u8 batcap0, batcap1, batcap2, batcap3;
u8 por_state = 0;
union power_supply_propval value;
int charging_enabled = false;
fuelgauge->fg_age_step = step;
s2mu004_read_reg_byte(fuelgauge->i2c, 0x0E, &batcap0);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x0F, &batcap1);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x10, &batcap2);
s2mu004_read_reg_byte(fuelgauge->i2c, 0x11, &batcap3);
pr_info("%s: [Long life] orig. batcap : %02x, %02x, %02x, %02x, fg_age_step data : %02x, %02x, %02x, %02x\n",
__func__, batcap0, batcap1, batcap2, batcap3,
fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[0],
fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[1],
fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[2],
fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[3]);
if ((batcap0 != fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[0]) ||
(batcap1 != fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[1]) ||
(batcap2 != fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[2]) ||
(batcap3 != fuelgauge->age_data_info[fuelgauge->fg_age_step].batcap[3])) {
pr_info("%s: [Long life] reset gauge for age forecast, step[%d]\n", __func__, fuelgauge->fg_age_step);
fuelgauge->age_reset_status = 1;
por_state |= 0x10;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1F, por_state);
/* check charging enable */
psy_do_property("s2mu004-charger", get, POWER_SUPPLY_PROP_CHARGING_ENABLED, value);
charging_enabled = value.intval;
if (charging_enabled == true) {
pr_info("%s: [Long life] disable charger for reset gauge age forecast\n",
__func__);
value.intval = SEC_BAT_CHG_MODE_CHARGING_OFF;
psy_do_property("s2mu004-charger", set, POWER_SUPPLY_PROP_CHARGING_ENABLED, value);
}
s2mu004_reset_fg(fuelgauge);
if (charging_enabled == true) {
psy_do_property("battery", get, POWER_SUPPLY_PROP_STATUS, value);
charging_enabled = value.intval;
if (charging_enabled == 1) { /* POWER_SUPPLY_STATUS_CHARGING 1 */
pr_info("%s: [Long life] enable charger for reset gauge age forecast\n",
__func__);
value.intval = SEC_BAT_CHG_MODE_CHARGING;
psy_do_property("s2mu004-charger",
set, POWER_SUPPLY_PROP_CHARGING_ENABLED, value);
}
}
por_state &= ~0x10;
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1F, por_state);
fuelgauge->age_reset_status = 0;
return 1;
}
return 0;
}
#endif
static int s2mu004_fg_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct s2mu004_fuelgauge_data *fuelgauge = power_supply_get_drvdata(psy);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
case POWER_SUPPLY_PROP_CHARGE_FULL:
return -ENODATA;
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
val->intval = fuelgauge->pdata->capacity_full * fuelgauge->raw_capacity;
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
switch (val->intval) {
case SEC_BATTERY_CAPACITY_DESIGNED:
val->intval = fuelgauge->pdata->capacity_full;
break;
case SEC_BATTERY_CAPACITY_ABSOLUTE:
val->intval = 0;
break;
case SEC_BATTERY_CAPACITY_TEMPERARY:
val->intval = 0;
break;
case SEC_BATTERY_CAPACITY_CURRENT:
val->intval = 0;
break;
case SEC_BATTERY_CAPACITY_AGEDCELL:
val->intval = 0;
break;
case SEC_BATTERY_CAPACITY_CYCLE:
val->intval = 0;
break;
case SEC_BATTERY_CAPACITY_FULL:
val->intval = fuelgauge->pdata->capacity_full;
break;
}
break;
/* Cell voltage (VCELL, mV) */
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = s2mu004_get_vbat(fuelgauge);
break;
/* Additional Voltage Information (mV) */
case POWER_SUPPLY_PROP_VOLTAGE_AVG:
switch (val->intval) {
case SEC_BATTERY_VOLTAGE_AVERAGE:
val->intval = s2mu004_get_avgvbat(fuelgauge);
break;
case SEC_BATTERY_VOLTAGE_OCV:
val->intval = s2mu004_get_ocv(fuelgauge);
break;
}
break;
/* Current (mA) */
case POWER_SUPPLY_PROP_CURRENT_NOW:
if (val->intval == SEC_BATTERY_CURRENT_UA)
val->intval = s2mu004_get_current(fuelgauge) * 1000;
else
val->intval = s2mu004_get_current(fuelgauge);
break;
/* Average Current (mA) */
case POWER_SUPPLY_PROP_CURRENT_AVG:
if (val->intval == SEC_BATTERY_CURRENT_UA)
val->intval = s2mu004_maintain_avgcurrent(fuelgauge) * 1000;
else
val->intval = s2mu004_maintain_avgcurrent(fuelgauge);
break;
case POWER_SUPPLY_PROP_CAPACITY:
if (val->intval == SEC_FUELGAUGE_CAPACITY_TYPE_RAW) {
val->intval = s2mu004_get_rawsoc(fuelgauge);
} else if (val->intval == SEC_FUELGAUGE_CAPACITY_TYPE_DYNAMIC_SCALE) {
val->intval = fuelgauge->raw_capacity;
} else {
val->intval = s2mu004_get_rawsoc(fuelgauge) / 10;
if (fuelgauge->pdata->capacity_calculation_type &
(SEC_FUELGAUGE_CAPACITY_TYPE_SCALE |
SEC_FUELGAUGE_CAPACITY_TYPE_DYNAMIC_SCALE))
s2mu004_fg_get_scaled_capacity(fuelgauge, val);
/* capacity should be between 0% and 100%
* (0.1% degree)
*/
if (val->intval > 1000)
val->intval = 1000;
fuelgauge->raw_capacity = val->intval;
if (val->intval < 0)
val->intval = 0;
/* get only integer part */
val->intval /= 10;
if (!fuelgauge->is_charging &&
fuelgauge->vbatl_mode == VBATL_MODE_SW_VALERT && !lpcharge) {
pr_info("%s : VBAT_L (low voltage). Decrease SOC\n", __func__);
val->intval = 0;
} else if ((fuelgauge->vbatl_mode == VBATL_MODE_SW_RECOVERY) &&
(val->intval == fuelgauge->capacity_old)) {
fuelgauge->vbatl_mode = VBATL_MODE_NORMAL;
}
/* check whether doing the wake_unlock */
if ((val->intval > fuelgauge->pdata->fuel_alert_soc) &&
fuelgauge->is_fuel_alerted) {
wake_unlock(&fuelgauge->fuel_alert_wake_lock);
s2mu004_fuelgauge_fuelalert_init(fuelgauge->i2c,
fuelgauge->pdata->fuel_alert_soc);
}
/* (Only for atomic capacity)
* In initial time, capacity_old is 0.
* and in resume from sleep,
* capacity_old is too different from actual soc.
* should update capacity_old
* by val->intval in booting or resume.
*/
if ((fuelgauge->initial_update_of_soc) &&
(fuelgauge->vbatl_mode != VBATL_MODE_SW_VALERT)) {
/* updated old capacity */
fuelgauge->capacity_old = val->intval;
fuelgauge->initial_update_of_soc = false;
break;
}
if (fuelgauge->sleep_initial_update_of_soc) {
/* updated old capacity in case of resume */
if (fuelgauge->is_charging) {
fuelgauge->capacity_old = val->intval;
fuelgauge->sleep_initial_update_of_soc = false;
break;
} else if ((fuelgauge->vbatl_mode != VBATL_MODE_SW_VALERT) &&
((!fuelgauge->is_charging) && (fuelgauge->capacity_old >= val->intval))) {
fuelgauge->capacity_old = val->intval;
fuelgauge->sleep_initial_update_of_soc = false;
break;
}
}
if (fuelgauge->pdata->capacity_calculation_type &
(SEC_FUELGAUGE_CAPACITY_TYPE_ATOMIC |
SEC_FUELGAUGE_CAPACITY_TYPE_SKIP_ABNORMAL))
s2mu004_fg_get_atomic_capacity(fuelgauge, val);
}
break;
/* IFPMIC Temperature */
case POWER_SUPPLY_PROP_TEMP:
case POWER_SUPPLY_PROP_TEMP_AMBIENT:
val->intval = s2mu004_get_temperature(fuelgauge);
break;
case POWER_SUPPLY_PROP_ENERGY_FULL:
#if defined(CONFIG_FUELGAUGE_ASOC_FROM_CYCLES)
{
int calc_step = 0;
if (!(fuelgauge->pdata->fixed_asoc_levels <= 0 || val->intval < 0)) {
for (calc_step = fuelgauge->pdata->fixed_asoc_levels - 1; calc_step >= 0; calc_step--) {
if (fuelgauge->pdata->cycles_to_asoc[calc_step].cycle <= val->intval)
break;
}
pr_info("%s: Battery Cycles = %d, ASOC step = %d\n",
__func__, val->intval, calc_step);
val->intval = fuelgauge->pdata->cycles_to_asoc[calc_step].asoc;
}
}
#else
return -1;
#endif
break;
case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
val->intval = fuelgauge->capacity_max;
break;
case POWER_SUPPLY_PROP_SCOPE:
val->intval = fuelgauge->mode;
break;
default:
return -EINVAL;
}
return 0;
}
static int s2mu004_fg_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct s2mu004_fuelgauge_data *fuelgauge = power_supply_get_drvdata(psy);
enum power_supply_ext_property ext_psp = psp;
u8 temp = 0;
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
#if defined(CONFIG_BATTERY_AGE_FORECAST)
if (val->intval == POWER_SUPPLY_STATUS_FULL)
s2mu004_fg_aging_check(fuelgauge, fuelgauge->change_step);
#endif
break;
case POWER_SUPPLY_PROP_CHARGE_FULL:
if (fuelgauge->pdata->capacity_calculation_type &
SEC_FUELGAUGE_CAPACITY_TYPE_DYNAMIC_SCALE) {
s2mu004_fg_calculate_dynamic_scale(fuelgauge, val->intval);
}
break;
case POWER_SUPPLY_PROP_ONLINE:
fuelgauge->cable_type = val->intval;
if (!(val->intval == SEC_BATTERY_CABLE_NONE)) {
if (fuelgauge->vbatl_mode >= VBATL_MODE_SW_VALERT) {
fuelgauge->vbatl_mode = VBATL_MODE_NORMAL;
fuelgauge->initial_update_of_soc = true;
}
}
break;
case POWER_SUPPLY_PROP_CHARGING_ENABLED:
if (val->intval)
fuelgauge->is_charging = true;
else
fuelgauge->is_charging = false;
break;
case POWER_SUPPLY_PROP_CAPACITY:
if (val->intval == SEC_FUELGAUGE_CAPACITY_TYPE_RESET) {
s2mu004_restart_gauging(fuelgauge);
fuelgauge->initial_update_of_soc = true;
}
break;
case POWER_SUPPLY_PROP_TEMP:
case POWER_SUPPLY_PROP_TEMP_AMBIENT:
s2mu004_set_temperature(fuelgauge, val->intval);
break;
case POWER_SUPPLY_PROP_ENERGY_NOW:
s2mu004_fg_reset_capacity_by_jig_connection(fuelgauge);
break;
case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
dev_info(&fuelgauge->i2c->dev,
"%s: capacity_max changed, %d -> %d\n",
__func__, fuelgauge->capacity_max, val->intval);
fuelgauge->capacity_max = s2mu004_fg_check_capacity_max(fuelgauge, val->intval);
fuelgauge->initial_update_of_soc = true;
break;
case POWER_SUPPLY_PROP_CHARGE_EMPTY:
pr_info("%s: WA for battery 0 percent\n", __func__);
s2mu004_write_reg_byte(fuelgauge->i2c, 0x1F, 0x01);
break;
case POWER_SUPPLY_PROP_ENERGY_AVG:
pr_info("%s: WA for power off issue: val(%d)\n", __func__, val->intval);
if (val->intval)
s2mu004_write_reg_byte(fuelgauge->i2c, 0x41, 0x10); /* charger start */
else
s2mu004_write_reg_byte(fuelgauge->i2c, 0x41, 0x04); /* charger end */
break;
#if defined(CONFIG_S2MU004_MODE_CHANGE_BY_TOPOFF)
case POWER_SUPPLY_PROP_CURRENT_FULL:
fuelgauge->topoff_current = val->intval;
break;
#endif
case POWER_SUPPLY_PROP_MAX ... POWER_SUPPLY_EXT_PROP_MAX:
switch (ext_psp) {
case POWER_SUPPLY_EXT_PROP_INBAT_VOLTAGE_FGSRC_SWITCHING:
if (val->intval == SEC_BAT_INBAT_FGSRC_SWITCHING_ON) {
/* Get Battery voltage (by I2C control) */
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_CTRL0, &temp);
temp &= 0xCF;
temp |= 0x10;
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_CTRL0, temp);
msleep(1000);
s2mu004_restart_gauging(fuelgauge);
s2mu004_fg_reset_capacity_by_jig_connection(fuelgauge);
} else if (val->intval == SEC_BAT_INBAT_FGSRC_SWITCHING_OFF) {
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_CTRL0, &temp);
temp &= 0xCF;
/* factory_mode ? Get SYS voltage : Get Battery voltage (by I2C control) */
if (factory_mode)
temp |= 0x30;
else
temp |= 0x10;
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_CTRL0, temp);
msleep(1000);
s2mu004_restart_gauging(fuelgauge);
}
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_CTRL0, &temp);
pr_info("%s: [%d] Internal switch 0x%X\n", __func__, val->intval, (temp & 0x30) >> 4);
break;
case POWER_SUPPLY_EXT_PROP_FUELGAUGE_FACTORY:
pr_info("%s:[DEBUG_FAC] fuelgauge\n", __func__);
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_CTRL0, &temp);
temp &= 0xCF;
temp |= 0x30;
s2mu004_write_reg_byte(fuelgauge->i2c, S2MU004_REG_CTRL0, temp);
s2mu004_fg_reset_capacity_by_jig_connection(fuelgauge);
break;
#if defined(CONFIG_BATTERY_AGE_FORECAST)
case POWER_SUPPLY_EXT_PROP_UPDATE_BATTERY_DATA:
fuelgauge->change_step = val->intval;
break;
#endif
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
return 0;
}
static void s2mu004_fg_isr_work(struct work_struct *work)
{
struct s2mu004_fuelgauge_data *fuelgauge =
container_of(work, struct s2mu004_fuelgauge_data, isr_work.work);
u8 fg_alert_status = 0;
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_STATUS, &fg_alert_status);
dev_info(&fuelgauge->i2c->dev, "%s : fg_alert_status(0x%x)\n",
__func__, fg_alert_status);
fg_alert_status &= 0x03;
if (fg_alert_status & 0x01) {
pr_info("%s : Battery Level(SOC) is very Low!\n", __func__);
}
if (fg_alert_status & 0x02) {
int voltage = s2mu004_get_vbat(fuelgauge);
pr_info("%s : Battery Voltage is very Low! (%dmV)\n",
__func__, voltage);
}
if (!fg_alert_status) {
fuelgauge->is_fuel_alerted = false;
pr_debug("%s : Battery Health is good!\n", __func__);
wake_unlock(&fuelgauge->fuel_alert_wake_lock);
}
}
static irqreturn_t s2mu004_fg_irq_thread(int irq, void *irq_data)
{
struct s2mu004_fuelgauge_data *fuelgauge = irq_data;
u8 fg_irq = 0;
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_IRQ, &fg_irq);
dev_info(&fuelgauge->i2c->dev, "%s: fg_irq(0x%x)\n",
__func__, fg_irq);
if (fuelgauge->is_fuel_alerted) {
return IRQ_HANDLED;
} else {
wake_lock(&fuelgauge->fuel_alert_wake_lock);
fuelgauge->is_fuel_alerted = true;
schedule_delayed_work(&fuelgauge->isr_work, 0);
}
return IRQ_HANDLED;
}
#ifdef CONFIG_OF
static int s2mu004_fuelgauge_parse_dt(struct s2mu004_fuelgauge_data *fuelgauge)
{
struct device_node *np = of_find_node_by_name(NULL, "s2mu004-fuelgauge");
int ret;
#if defined(CONFIG_BATTERY_AGE_FORECAST)
int len, i;
#if defined(CONFIG_FUELGAUGE_ASOC_FROM_CYCLES)
const u32 *p;
#endif
#endif
/* reset, irq gpio info */
if (np == NULL) {
pr_err("%s np NULL\n", __func__);
} else {
fuelgauge->pdata->fg_irq = of_get_named_gpio(np, "fuelgauge,fuel_int", 0);
if (fuelgauge->pdata->fg_irq < 0)
pr_err("%s error reading fg_irq = %d\n",
__func__, fuelgauge->pdata->fg_irq);
ret = of_property_read_u32(np, "fuelgauge,capacity_max",
&fuelgauge->pdata->capacity_max);
if (ret < 0)
pr_err("%s error reading capacity_max %d\n", __func__, ret);
ret = of_property_read_u32(np, "fuelgauge,capacity_max_margin",
&fuelgauge->pdata->capacity_max_margin);
if (ret < 0)
pr_err("%s error reading capacity_max_margin %d\n", __func__, ret);
ret = of_property_read_u32(np, "fuelgauge,capacity_min",
&fuelgauge->pdata->capacity_min);
if (ret < 0)
pr_err("%s error reading capacity_min %d\n", __func__, ret);
ret = of_property_read_u32(np, "fuelgauge,capacity_calculation_type",
&fuelgauge->pdata->capacity_calculation_type);
if (ret < 0)
pr_err("%s error reading capacity_calculation_type %d\n",
__func__, ret);
ret = of_property_read_u32(np, "fuelgauge,fg_log_enable",
&fuelgauge->pdata->fg_log_enable);
if (ret < 0)
pr_err("%s fg_log_disabled %d\n", __func__, ret);
ret = of_property_read_u32(np, "fuelgauge,fuel_alert_soc",
&fuelgauge->pdata->fuel_alert_soc);
if (ret < 0)
pr_err("%s error reading pdata->fuel_alert_soc %d\n",
__func__, ret);
ret = of_property_read_u32(np, "fuelgauge,capacity_full",
&fuelgauge->pdata->capacity_full);
if (ret < 0)
pr_err("%s error reading pdata->capacity_full %d\n",
__func__, ret);
ret = of_property_read_u32(np, "fuelgauge,fuel_alert_vol",
&fuelgauge->pdata->fuel_alert_vol);
if (ret < 0)
pr_err("%s error reading pdata->fuel_alert_vol %d\n",
__func__, ret);
fuelgauge->pdata->repeated_fuelalert = of_property_read_bool(np,
"fuelgauge,repeated_fuelalert");
ret = of_property_read_u32(np, "fuelgauge,low_temp_limit",
&fuelgauge->low_temp_limit);
if (ret < 0) {
pr_err("%s error reading low temp limit %d\n", __func__, ret);
fuelgauge->low_temp_limit = 100;
}
pr_info("%s : LOW TEMP LIMIT(%d)\n",
__func__, fuelgauge->low_temp_limit);
ret = of_property_read_u32(np, "fuelgauge,sw_vbat_l_recovery_vol",
&fuelgauge->sw_vbat_l_recovery_vol);
if (ret < 0) {
pr_err("%s error reading sw_vbat_l_recovery_vol %d\n",
__func__, ret);
fuelgauge->sw_vbat_l_recovery_vol = 3465;
}
pr_info("%s : SW VBAT_L recovery (%d)mV\n",
__func__, fuelgauge->sw_vbat_l_recovery_vol);
#if defined(CONFIG_S2MU004_MODE_CHANGE_BY_TOPOFF)
/* get topoff info */
np = of_find_node_by_name(NULL, "cable-info");
if (!np) {
pr_err("%s np NULL\n", __func__);
} else {
ret = of_property_read_u32(np, "full_check_current_1st",
&fuelgauge->topoff_current);
if (ret < 0) {
pr_err("%s fail to get topoff current %d\n", __func__, ret);
fuelgauge->topoff_current = 500;
}
}
#endif
/* get battery_params node */
np = of_find_node_by_name(NULL, "battery_params");
if (!np) {
pr_err("%s battery_params node NULL\n", __func__);
} else {
#if !defined(CONFIG_BATTERY_AGE_FORECAST)
/* get battery_table */
ret = of_property_read_u32_array(np, "battery,battery_table3",
fuelgauge->info.battery_table3, 88);
if (ret < 0) {
pr_err("%s error reading battery,battery_table3\n", __func__);
}
ret = of_property_read_u32_array(np, "battery,battery_table4",
fuelgauge->info.battery_table4, 22);
if (ret < 0) {
pr_err("%s error reading battery,battery_table4\n", __func__);
}
ret = of_property_read_u32_array(np, "battery,batcap", fuelgauge->info.batcap, 4);
if (ret < 0) {
pr_err("%s error reading battery,batcap\n", __func__);
}
ret = of_property_read_u32_array(np, "battery,accum", fuelgauge->info.accum, 2);
if (ret < 0) {
pr_err("%s error reading battery,accum\n", __func__);
}
ret = of_property_read_u32_array(np, "battery,soc_arr_val", fuelgauge->info.soc_arr_val, 22);
if (ret < 0) {
pr_err("%s error reading battery,soc_arr_val\n", __func__);
}
ret = of_property_read_u32_array(np, "battery,ocv_arr_val", fuelgauge->info.ocv_arr_val, 22);
if (ret < 0) {
pr_err("%s error reading battery,ocv_arr_val\n", __func__);
}
#else
of_get_property(np, "battery,battery_data", &len);
fuelgauge->fg_num_age_step = len / sizeof(fg_age_data_info_t);
fuelgauge->age_data_info = kzalloc(len, GFP_KERNEL);
ret = of_property_read_u32_array(np, "battery,battery_data",
(int *)fuelgauge->age_data_info, len/sizeof(int));
pr_err("%s: [Long life] fuelgauge->fg_num_age_step %d\n",
__func__, fuelgauge->fg_num_age_step);
if ((sizeof(fg_age_data_info_t) * fuelgauge->fg_num_age_step) != len) {
pr_err("%s: The Long life variables and the data in device tree does not match\n", __func__);
BUG();
}
for (i = 0; i < fuelgauge->fg_num_age_step; i++) {
#if defined(CONFIG_S2MU004_MODE_CHANGE_BY_TOPOFF)
pr_err("%s: [Long life] age_step = %d, table3[0] %d, table4[0] %d, batcap[0] %02x, accum[0] %02x, soc_arr[0] %d, ocv_arr[0] %d, volt_tun : %02x\n",
__func__, i,
fuelgauge->age_data_info[i].battery_table3[0],
fuelgauge->age_data_info[i].battery_table4[0],
fuelgauge->age_data_info[i].batcap[0],
fuelgauge->age_data_info[i].accum[0],
fuelgauge->age_data_info[i].soc_arr_val[0],
fuelgauge->age_data_info[i].ocv_arr_val[0],
fuelgauge->age_data_info[i].volt_mode_tunning);
#else
pr_err("%s: [Long life] age_step = %d, table3[0] %d, table4[0] %d, batcap[0] %02x, accum[0] %02x, soc_arr[0] %d, ocv_arr[0] %d\n",
__func__, i,
fuelgauge->age_data_info[i].battery_table3[0],
fuelgauge->age_data_info[i].battery_table4[0],
fuelgauge->age_data_info[i].batcap[0],
fuelgauge->age_data_info[i].accum[0],
fuelgauge->age_data_info[i].soc_arr_val[0],
fuelgauge->age_data_info[i].ocv_arr_val[0]);
#endif
}
#if defined(CONFIG_FUELGAUGE_ASOC_FROM_CYCLES)
p = of_get_property(np, "battery,cycles_to_asoc_mapping", &len);
if (p) {
fuelgauge->pdata->fixed_asoc_levels = len / sizeof(sec_cycles_to_asoc_t);
fuelgauge->pdata->cycles_to_asoc = kzalloc(len, GFP_KERNEL);
ret = of_property_read_u32_array(np, "battery,cycles_to_asoc_mapping",
(u32 *)fuelgauge->pdata->cycles_to_asoc, len/sizeof(u32));
if (ret) {
pr_err("%s: failed to read fuelgauge->pdata->cycles_to_asoc: %d\n",
__func__, ret);
kfree(fuelgauge->pdata->cycles_to_asoc);
fuelgauge->pdata->cycles_to_asoc = NULL;
fuelgauge->pdata->fixed_asoc_levels = 0;
}
pr_err("%s: fixed_asoc_levels : %d\n", __func__, fuelgauge->pdata->fixed_asoc_levels);
for (len = 0; len < fuelgauge->pdata->fixed_asoc_levels; ++len) {
pr_err("[%d/%d]cycle:%d, asoc:%d\n",
len, fuelgauge->pdata->fixed_asoc_levels-1,
fuelgauge->pdata->cycles_to_asoc[len].cycle,
fuelgauge->pdata->cycles_to_asoc[len].asoc);
}
} else {
fuelgauge->pdata->fixed_asoc_levels = 0;
pr_err("%s: Cycles to ASOC mapping not defined\n", __func__);
}
#endif
#endif
}
}
return 0;
}
static struct of_device_id s2mu004_fuelgauge_match_table[] = {
{ .compatible = "samsung,s2mu004-fuelgauge",},
{},
};
#else
static int s2mu004_fuelgauge_parse_dt(struct s2mu004_fuelgauge_data *fuelgauge)
{
return -ENOSYS;
}
#define s2mu004_fuelgauge_match_table NULL
#endif /* CONFIG_OF */
static const struct power_supply_desc s2mu004_fuelgauge_power_supply_desc = {
.name = "s2mu004-fuelgauge",
.type = POWER_SUPPLY_TYPE_UNKNOWN,
.get_property = s2mu004_fg_get_property,
.set_property = s2mu004_fg_set_property,
.properties = s2mu004_fuelgauge_props,
.num_properties = ARRAY_SIZE(s2mu004_fuelgauge_props),
};
static int s2mu004_fuelgauge_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct s2mu004_fuelgauge_data *fuelgauge;
union power_supply_propval raw_soc_val;
struct power_supply_config psy_cfg = {};
int ret = 0;
u8 temp = 0;
pr_info("%s: S2MU004 Fuelgauge Driver Loading\n", __func__);
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
return -EIO;
fuelgauge = kzalloc(sizeof(*fuelgauge), GFP_KERNEL);
if (!fuelgauge)
return -ENOMEM;
mutex_init(&fuelgauge->fg_lock);
fuelgauge->i2c = client;
if (client->dev.of_node) {
fuelgauge->pdata = devm_kzalloc(&client->dev, sizeof(*(fuelgauge->pdata)),
GFP_KERNEL);
if (!fuelgauge->pdata) {
dev_err(&client->dev, "Failed to allocate memory\n");
ret = -ENOMEM;
goto err_parse_dt_nomem;
}
ret = s2mu004_fuelgauge_parse_dt(fuelgauge);
if (ret < 0)
goto err_parse_dt;
} else {
fuelgauge->pdata = client->dev.platform_data;
}
i2c_set_clientdata(client, fuelgauge);
if (!fuelgauge->info.data_ver) {
s2mu004_read_reg_byte(fuelgauge->i2c, S2MU004_REG_FG_ID, &temp);
fuelgauge->info.data_ver = (temp & 0x0F);
}
/* 0x48[7:4]=0010 : EVT2 */
fuelgauge->revision = 0;
s2mu004_read_reg_byte(fuelgauge->i2c, 0x48, &temp);
fuelgauge->revision = (temp & 0xF0) >> 4;
pr_info("%s: S2MU004 Fuelgauge revision: %d, reg 0x48 = 0x%x\n", __func__, fuelgauge->revision, temp);
fuelgauge->capacity_max = fuelgauge->pdata->capacity_max;
fuelgauge->info.soc = 0;
fuelgauge->mode = CURRENT_MODE;
raw_soc_val.intval = s2mu004_get_rawsoc(fuelgauge);
raw_soc_val.intval = raw_soc_val.intval / 10;
if (raw_soc_val.intval > fuelgauge->capacity_max)
s2mu004_fg_calculate_dynamic_scale(fuelgauge, 100);
s2mu004_init_regs(fuelgauge);
psy_cfg.drv_data = fuelgauge;
fuelgauge->psy_fg = power_supply_register(&client->dev, &s2mu004_fuelgauge_power_supply_desc, &psy_cfg);
if (ret) {
pr_err("%s: Failed to Register psy_fg\n", __func__);
goto err_data_free;
}
fuelgauge->is_fuel_alerted = false;
if (fuelgauge->pdata->fuel_alert_soc >= 0) {
s2mu004_fuelgauge_fuelalert_init(fuelgauge->i2c,
fuelgauge->pdata->fuel_alert_soc);
wake_lock_init(&fuelgauge->fuel_alert_wake_lock,
WAKE_LOCK_SUSPEND, "fuel_alerted");
if (fuelgauge->pdata->fg_irq > 0) {
INIT_DELAYED_WORK(
&fuelgauge->isr_work, s2mu004_fg_isr_work);
fuelgauge->fg_irq = gpio_to_irq(fuelgauge->pdata->fg_irq);
dev_info(&client->dev,
"%s : fg_irq = %d\n", __func__, fuelgauge->fg_irq);
if (fuelgauge->fg_irq > 0) {
ret = request_threaded_irq(fuelgauge->fg_irq,
NULL, s2mu004_fg_irq_thread,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
"fuelgauge-irq", fuelgauge);
if (ret) {
dev_err(&client->dev,
"%s: Failed to Request IRQ\n", __func__);
goto err_supply_unreg;
}
ret = enable_irq_wake(fuelgauge->fg_irq);
if (ret < 0)
dev_err(&client->dev,
"%s: Failed to Enable Wakeup Source(%d)\n",
__func__, ret);
} else {
dev_err(&client->dev, "%s: Failed gpio_to_irq(%d)\n",
__func__, fuelgauge->fg_irq);
goto err_supply_unreg;
}
}
}
fuelgauge->sleep_initial_update_of_soc = false;
fuelgauge->initial_update_of_soc = true;
fuelgauge->cc_on = true;
fuelgauge->probe_done = true;
pr_info("%s: S2MU004 Fuelgauge Driver Loaded\n", __func__);
return 0;
err_supply_unreg:
power_supply_unregister(fuelgauge->psy_fg);
err_data_free:
if (client->dev.of_node)
kfree(fuelgauge->pdata);
err_parse_dt:
err_parse_dt_nomem:
mutex_destroy(&fuelgauge->fg_lock);
kfree(fuelgauge);
return ret;
}
static const struct i2c_device_id s2mu004_fuelgauge_id[] = {
{"s2mu004-fuelgauge", 0},
{}
};
static void s2mu004_fuelgauge_shutdown(struct i2c_client *client)
{
}
static int s2mu004_fuelgauge_remove(struct i2c_client *client)
{
struct s2mu004_fuelgauge_data *fuelgauge = i2c_get_clientdata(client);
if (fuelgauge->pdata->fuel_alert_soc >= 0)
wake_lock_destroy(&fuelgauge->fuel_alert_wake_lock);
return 0;
}
#if defined CONFIG_PM
static int s2mu004_fuelgauge_suspend(struct device *dev)
{
return 0;
}
static int s2mu004_fuelgauge_resume(struct device *dev)
{
struct s2mu004_fuelgauge_data *fuelgauge = dev_get_drvdata(dev);
fuelgauge->sleep_initial_update_of_soc = true;
return 0;
}
#else
#define s2mu004_fuelgauge_suspend NULL
#define s2mu004_fuelgauge_resume NULL
#endif
static SIMPLE_DEV_PM_OPS(s2mu004_fuelgauge_pm_ops, s2mu004_fuelgauge_suspend,
s2mu004_fuelgauge_resume);
static struct i2c_driver s2mu004_fuelgauge_driver = {
.driver = {
.name = "s2mu004-fuelgauge",
.owner = THIS_MODULE,
.pm = &s2mu004_fuelgauge_pm_ops,
.of_match_table = s2mu004_fuelgauge_match_table,
},
.probe = s2mu004_fuelgauge_probe,
.remove = s2mu004_fuelgauge_remove,
.shutdown = s2mu004_fuelgauge_shutdown,
.id_table = s2mu004_fuelgauge_id,
};
static int __init s2mu004_fuelgauge_init(void)
{
pr_info("%s: S2MU004 Fuelgauge Init\n", __func__);
return i2c_add_driver(&s2mu004_fuelgauge_driver);
}
static void __exit s2mu004_fuelgauge_exit(void)
{
i2c_del_driver(&s2mu004_fuelgauge_driver);
}
module_init(s2mu004_fuelgauge_init);
module_exit(s2mu004_fuelgauge_exit);
MODULE_DESCRIPTION("Samsung S2MU004 Fuel Gauge Driver");
MODULE_AUTHOR("Samsung Electronics");
MODULE_LICENSE("GPL");