mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-09 20:56:16 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
137 lines
2.7 KiB
C
137 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2013 Samsung Electronics
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* Piotr Wilczek <p.wilczek@samsung.com>
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*/
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#include <common.h>
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#include <power/pmic.h>
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#include <power/max77693_fg.h>
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#include <i2c.h>
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#include <power/power_chrg.h>
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#include <power/battery.h>
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#include <power/fg_battery_cell_params.h>
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#include <errno.h>
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static int max77693_get_vcell(u32 *vcell)
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{
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u16 value;
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u8 ret;
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ret = i2c_read(MAX77693_FUEL_I2C_ADDR, MAX77693_VCELL, 1,
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(u8 *)&value, 2);
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if (ret)
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return ret;
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*vcell = (u32)(value >> 3);
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*vcell = *vcell * 625;
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return 0;
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}
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static int max77693_get_soc(u32 *soc)
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{
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u16 value;
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u8 ret;
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ret = i2c_read(MAX77693_FUEL_I2C_ADDR, MAX77693_VFSOC, 1,
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(u8 *)&value, 2);
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if (ret)
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return ret;
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*soc = (u32)(value >> 8);
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return 0;
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}
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static int power_update_battery(struct pmic *p, struct pmic *bat)
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{
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struct power_battery *pb = bat->pbat;
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int ret;
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if (pmic_probe(p)) {
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puts("Can't find max77693 fuel gauge\n");
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return -ENODEV;
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}
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ret = max77693_get_soc(&pb->bat->state_of_chrg);
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if (ret)
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return ret;
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max77693_get_vcell(&pb->bat->voltage_uV);
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return 0;
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}
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static int power_check_battery(struct pmic *p, struct pmic *bat)
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{
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struct power_battery *pb = bat->pbat;
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unsigned int val;
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int ret = 0;
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if (pmic_probe(p)) {
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puts("Can't find max77693 fuel gauge\n");
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return -ENODEV;
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}
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ret = pmic_reg_read(p, MAX77693_STATUS, &val);
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if (ret)
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return ret;
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debug("fg status: 0x%x\n", val);
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ret = pmic_reg_read(p, MAX77693_VERSION, &pb->bat->version);
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if (ret)
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return ret;
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ret = power_update_battery(p, bat);
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if (ret)
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return ret;
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debug("fg ver: 0x%x\n", pb->bat->version);
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printf("BAT: state_of_charge(SOC):%d%%\n",
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pb->bat->state_of_chrg);
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printf(" voltage: %d.%6.6d [V] (expected to be %d [mAh])\n",
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pb->bat->voltage_uV / 1000000,
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pb->bat->voltage_uV % 1000000,
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pb->bat->capacity);
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if (pb->bat->voltage_uV > 3850000)
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pb->bat->state = EXT_SOURCE;
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else if (pb->bat->voltage_uV < 3600000 || pb->bat->state_of_chrg < 5)
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pb->bat->state = CHARGE;
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else
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pb->bat->state = NORMAL;
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return 0;
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}
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static struct power_fg power_fg_ops = {
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.fg_battery_check = power_check_battery,
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.fg_battery_update = power_update_battery,
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};
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int power_fg_init(unsigned char bus)
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{
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static const char name[] = "MAX77693_FG";
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struct pmic *p = pmic_alloc();
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if (!p) {
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printf("%s: POWER allocation error!\n", __func__);
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return -ENOMEM;
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}
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debug("Board Fuel Gauge init\n");
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p->name = name;
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p->interface = PMIC_I2C;
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p->number_of_regs = FG_NUM_OF_REGS;
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p->hw.i2c.addr = MAX77693_FUEL_I2C_ADDR;
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p->hw.i2c.tx_num = 2;
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p->sensor_byte_order = PMIC_SENSOR_BYTE_ORDER_BIG;
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p->bus = bus;
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p->fg = &power_fg_ops;
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return 0;
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}
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