mirror of
https://github.com/AsahiLinux/u-boot
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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>
95 lines
2.1 KiB
C
95 lines
2.1 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_pmic.h>
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#include <i2c.h>
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#include <errno.h>
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static int max77693_charger_state(struct pmic *p, int state, int current)
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{
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unsigned int val;
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if (pmic_probe(p))
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return -ENODEV;
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/* unlock write capability */
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val = MAX77693_CHG_UNLOCK;
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pmic_reg_write(p, MAX77693_CHG_CNFG_06, val);
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if (state == PMIC_CHARGER_DISABLE) {
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puts("Disable the charger.\n");
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pmic_reg_read(p, MAX77693_CHG_CNFG_00, &val);
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val &= ~0x01;
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pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
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return -ENOTSUPP;
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}
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if (current < CHARGER_MIN_CURRENT || current > CHARGER_MAX_CURRENT) {
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printf("%s: Wrong charge current: %d [mA]\n",
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__func__, current);
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return -EINVAL;
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}
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/* set charging current */
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pmic_reg_read(p, MAX77693_CHG_CNFG_02, &val);
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val &= ~MAX77693_CHG_CC;
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val |= current * 10 / 333; /* 0.1A/3 steps */
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pmic_reg_write(p, MAX77693_CHG_CNFG_02, val);
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/* enable charging */
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val = MAX77693_CHG_MODE_ON;
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pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
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/* check charging current */
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pmic_reg_read(p, MAX77693_CHG_CNFG_02, &val);
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val &= 0x3f;
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printf("Enable the charger @ %d [mA]\n", val * 333 / 10);
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return 0;
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}
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static int max77693_charger_bat_present(struct pmic *p)
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{
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unsigned int val;
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if (pmic_probe(p))
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return -ENODEV;
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pmic_reg_read(p, MAX77693_CHG_INT_OK, &val);
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return !(val & MAX77693_CHG_DETBAT);
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}
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static struct power_chrg power_chrg_pmic_ops = {
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.chrg_bat_present = max77693_charger_bat_present,
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.chrg_state = max77693_charger_state,
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};
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int pmic_init_max77693(unsigned char bus)
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{
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static const char name[] = "MAX77693_PMIC";
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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 PMIC 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 = PMIC_NUM_OF_REGS;
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p->hw.i2c.addr = MAX77693_PMIC_I2C_ADDR;
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p->hw.i2c.tx_num = 1;
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p->bus = bus;
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p->chrg = &power_chrg_pmic_ops;
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return 0;
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}
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