power: Drop unused fg_max17042 driver and fuel gauge code

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>

3 files changed, 0 insertions, 294 deletions

diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index efdae3655a..93003e97e0 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -5,7 +5,6 @@
 
 obj-$(CONFIG_$(SPL_TPL_)ACPI_PMC) += acpi_pmc/
 obj-$(CONFIG_$(SPL_TPL_)POWER_DOMAIN) += domain/
-obj-y += fuel_gauge/
 obj-y += mfd/
 obj-y += pmic/
 obj-y += regulator/
diff --git a/drivers/power/fuel_gauge/Makefile b/drivers/power/fuel_gauge/Makefile
deleted file mode 100644
index ca2df94758..0000000000
--- a/drivers/power/fuel_gauge/Makefile
+++ /dev/null
@@ -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
diff --git a/drivers/power/fuel_gauge/fg_max17042.c b/drivers/power/fuel_gauge/fg_max17042.c
deleted file mode 100644
index a395d587a8..0000000000
--- 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;
-}