diff options
Diffstat (limited to 'drivers/power/fuel_gauge/fg_max17042.c')
| -rw-r--r-- | drivers/power/fuel_gauge/fg_max17042.c | 287 |
1 files changed, 0 insertions, 287 deletions
diff --git a/drivers/power/fuel_gauge/fg_max17042.c b/drivers/power/fuel_gauge/fg_max17042.c deleted file mode 100644 index a395d587a86..00000000000 --- a/drivers/power/fuel_gauge/fg_max17042.c +++ /dev/null @@ -1,287 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (C) 2012 Samsung Electronics - * Lukasz Majewski <l.majewski@samsung.com> - */ - -#include <common.h> -#include <log.h> -#include <linux/delay.h> -#include <power/pmic.h> -#include <power/max17042_fg.h> -#include <i2c.h> -#include <power/max8997_pmic.h> -#include <power/power_chrg.h> -#include <power/battery.h> -#include <power/fg_battery_cell_params.h> -#include <errno.h> - -static int fg_write_regs(struct pmic *p, u8 addr, u16 *data, int num) -{ - int ret = 0; - int i; - - for (i = 0; i < num; i++, addr++) { - ret = pmic_reg_write(p, addr, *(data + i)); - if (ret) - return ret; - } - - return 0; -} - -static int fg_read_regs(struct pmic *p, u8 addr, u16 *data, int num) -{ - unsigned int dat; - int ret = 0; - int i; - - for (i = 0; i < num; i++, addr++) { - ret = pmic_reg_read(p, addr, &dat); - if (ret) - return ret; - - *(data + i) = (u16)dat; - } - - return 0; -} - -static int fg_write_and_verify(struct pmic *p, u8 addr, u16 data) -{ - unsigned int val = data; - int ret = 0; - - ret |= pmic_reg_write(p, addr, val); - ret |= pmic_reg_read(p, addr, &val); - - if (ret) - return ret; - - if (((u16) val) == data) - return 0; - - return -1; -} - -static void por_fuelgauge_init(struct pmic *p) -{ - u16 r_data0[16], r_data1[16], r_data2[16]; - u32 rewrite_count = 5; - u32 check_count; - u32 lock_count; - u32 i = 0; - u32 val; - s32 ret = 0; - char *status_msg; - - /* Delay 500 ms */ - mdelay(500); - /* Initilize Configuration */ - pmic_reg_write(p, MAX17042_CONFIG, 0x2310); - -rewrite_model: - check_count = 5; - lock_count = 5; - - if (!rewrite_count--) { - status_msg = "init failed!"; - goto error; - } - - /* Unlock Model Access */ - pmic_reg_write(p, MAX17042_MLOCKReg1, MODEL_UNLOCK1); - pmic_reg_write(p, MAX17042_MLOCKReg2, MODEL_UNLOCK2); - - /* Write/Read/Verify the Custom Model */ - ret = fg_write_regs(p, MAX17042_MODEL1, cell_character0, - ARRAY_SIZE(cell_character0)); - if (ret) - goto rewrite_model; - - ret = fg_write_regs(p, MAX17042_MODEL2, cell_character1, - ARRAY_SIZE(cell_character1)); - if (ret) - goto rewrite_model; - - ret = fg_write_regs(p, MAX17042_MODEL3, cell_character2, - ARRAY_SIZE(cell_character2)); - if (ret) - goto rewrite_model; - -check_model: - if (!check_count--) { - if (rewrite_count) - goto rewrite_model; - else - status_msg = "check failed!"; - - goto error; - } - - ret = fg_read_regs(p, MAX17042_MODEL1, r_data0, ARRAY_SIZE(r_data0)); - if (ret) - goto check_model; - - ret = fg_read_regs(p, MAX17042_MODEL2, r_data1, ARRAY_SIZE(r_data1)); - if (ret) - goto check_model; - - ret = fg_read_regs(p, MAX17042_MODEL3, r_data2, ARRAY_SIZE(r_data2)); - if (ret) - goto check_model; - - for (i = 0; i < 16; i++) { - if ((cell_character0[i] != r_data0[i]) - || (cell_character1[i] != r_data1[i]) - || (cell_character2[i] != r_data2[i])) - goto rewrite_model; - } - -lock_model: - if (!lock_count--) { - if (rewrite_count) - goto rewrite_model; - else - status_msg = "lock failed!"; - - goto error; - } - - /* Lock model access */ - pmic_reg_write(p, MAX17042_MLOCKReg1, MODEL_LOCK1); - pmic_reg_write(p, MAX17042_MLOCKReg2, MODEL_LOCK2); - - /* Verify the model access is locked */ - ret = fg_read_regs(p, MAX17042_MODEL1, r_data0, ARRAY_SIZE(r_data0)); - if (ret) - goto lock_model; - - ret = fg_read_regs(p, MAX17042_MODEL2, r_data1, ARRAY_SIZE(r_data1)); - if (ret) - goto lock_model; - - ret = fg_read_regs(p, MAX17042_MODEL3, r_data2, ARRAY_SIZE(r_data2)); - if (ret) - goto lock_model; - - for (i = 0; i < ARRAY_SIZE(r_data0); i++) { - /* Check if model locked */ - if (r_data0[i] || r_data1[i] || r_data2[i]) - goto lock_model; - } - - /* Write Custom Parameters */ - fg_write_and_verify(p, MAX17042_RCOMP0, RCOMP0); - fg_write_and_verify(p, MAX17042_TEMPCO, TempCo); - - /* Delay at least 350mS */ - mdelay(350); - - /* Initialization Complete */ - pmic_reg_read(p, MAX17042_STATUS, &val); - /* Write and Verify Status with POR bit Cleared */ - fg_write_and_verify(p, MAX17042_STATUS, val & ~MAX17042_POR); - - /* Delay at least 350 ms */ - mdelay(350); - - status_msg = "OK!"; -error: - debug("%s: model init status: %s\n", p->name, status_msg); - return; -} - -static int power_update_battery(struct pmic *p, struct pmic *bat) -{ - struct power_battery *pb = bat->pbat; - unsigned int val; - int ret = 0; - - if (pmic_probe(p)) { - puts("Can't find max17042 fuel gauge\n"); - return -ENODEV; - } - - ret |= pmic_reg_read(p, MAX17042_VFSOC, &val); - pb->bat->state_of_chrg = (val >> 8); - - pmic_reg_read(p, MAX17042_VCELL, &val); - debug("vfsoc: 0x%x\n", val); - pb->bat->voltage_uV = ((val & 0xFFUL) >> 3) + ((val & 0xFF00) >> 3); - pb->bat->voltage_uV = (pb->bat->voltage_uV * 625); - - pmic_reg_read(p, 0x05, &val); - pb->bat->capacity = val >> 2; - - return ret; -} - -static int power_check_battery(struct pmic *p, struct pmic *bat) -{ - struct power_battery *pb = bat->pbat; - unsigned int val; - int ret = 0; - - if (pmic_probe(p)) { - puts("Can't find max17042 fuel gauge\n"); - return -ENODEV; - } - - ret |= pmic_reg_read(p, MAX17042_STATUS, &val); - debug("fg status: 0x%x\n", val); - - if (val & MAX17042_POR) - por_fuelgauge_init(p); - - ret |= pmic_reg_read(p, MAX17042_VERSION, &val); - pb->bat->version = val; - - power_update_battery(p, bat); - debug("fg ver: 0x%x\n", pb->bat->version); - printf("BAT: state_of_charge(SOC):%d%%\n", - pb->bat->state_of_chrg); - - printf(" voltage: %d.%6.6d [V] (expected to be %d [mAh])\n", - pb->bat->voltage_uV / 1000000, - pb->bat->voltage_uV % 1000000, - pb->bat->capacity); - - if (pb->bat->voltage_uV > 3850000) - pb->bat->state = EXT_SOURCE; - else if (pb->bat->voltage_uV < 3600000 || pb->bat->state_of_chrg < 5) - pb->bat->state = CHARGE; - else - pb->bat->state = NORMAL; - - return ret; -} - -static struct power_fg power_fg_ops = { - .fg_battery_check = power_check_battery, - .fg_battery_update = power_update_battery, -}; - -int power_fg_init(unsigned char bus) -{ - static const char name[] = "MAX17042_FG"; - struct pmic *p = pmic_alloc(); - - if (!p) { - printf("%s: POWER allocation error!\n", __func__); - return -ENOMEM; - } - - debug("Board Fuel Gauge init\n"); - - p->name = name; - p->interface = PMIC_I2C; - p->number_of_regs = FG_NUM_OF_REGS; - p->hw.i2c.addr = MAX17042_I2C_ADDR; - p->hw.i2c.tx_num = 2; - p->sensor_byte_order = PMIC_SENSOR_BYTE_ORDER_BIG; - p->bus = bus; - - p->fg = &power_fg_ops; - return 0; -} |