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power: Drop unused fg_max17042 driver and fuel gauge code

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This driver is not used. Drop it and the entire fuel_gauge directory,
since there is nothing left.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2023-02-01 13:19:59 -07:00
committed by Tom Rini
parent 7cac324aee
commit 5f1aa5cc8a
4 changed files with 0 additions and 367 deletions
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1
drivers/power/Makefile
View File

@@ -5,7 +5,6 @@
obj-$(CONFIG_$(SPL_TPL_)ACPI_PMC) += acpi_pmc/ obj-$(CONFIG_$(SPL_TPL_)ACPI_PMC) += acpi_pmc/
obj-$(CONFIG_$(SPL_TPL_)POWER_DOMAIN) += domain/ obj-$(CONFIG_$(SPL_TPL_)POWER_DOMAIN) += domain/
obj-y += fuel_gauge/
obj-y += mfd/ obj-y += mfd/
obj-y += pmic/ obj-y += pmic/
obj-y += regulator/ obj-y += regulator/

6
drivers/power/fuel_gauge/Makefile
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@@ -1,6 +0,0 @@
# SPDX-License-Identifier: GPL-2.0+
#
# Copyright (C) 2012 Samsung Electronics
# Lukasz Majewski <l.majewski@samsung.com>
obj-$(CONFIG_POWER_FG_MAX17042) += fg_max17042.o

287
drivers/power/fuel_gauge/fg_max17042.c
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@@ -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;
}

73
include/power/fg_battery_cell_params.h
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@@ -1,73 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (C) 2012 Samsung Electronics
* Lukasz Majewski <l.majewski@samsung.com>
*/
#ifndef __FG_BATTERY_CELL_PARAMS_H_
#define __FG_BATTERY_CELL_PARAMS_H_
#if defined(CONFIG_POWER_FG_MAX17042) && defined(CONFIG_TARGET_TRATS)
/* Cell characteristics - Exynos4 TRATS development board */
/* Shall be written to addr 0x80h */
u16 cell_character0[16] = {
0xA2A0,
0xB6E0,
0xB850,
0xBAD0,
0xBB20,
0xBB70,
0xBBC0,
0xBC20,
0xBC80,
0xBCE0,
0xBD80,
0xBE20,
0xC090,
0xC420,
0xC910,
0xD070
};
/* Shall be written to addr 0x90h */
u16 cell_character1[16] = {
0x0090,
0x1A50,
0x02F0,
0x2060,
0x2060,
0x2E60,
0x26A0,
0x2DB0,
0x2DB0,
0x1870,
0x2A20,
0x16F0,
0x08F0,
0x0D40,
0x08C0,
0x08C0
};
/* Shall be written to addr 0xA0h */
u16 cell_character2[16] = {
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100,
0x0100
};
#endif
#endif /* __FG_BATTERY_CELL_PARAMS_H_ */