mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 10:48:51 +00:00
78a36c3ef3
This enum should be common across all PMICs rather than having it independently defined with the same name in multiple places. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
/*
|
|
* Copyright (C) 2012 Samsung Electronics
|
|
* Lukasz Majewski <l.majewski@samsung.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <power/pmic.h>
|
|
#include <power/max8997_pmic.h>
|
|
#include <i2c.h>
|
|
#include <errno.h>
|
|
|
|
unsigned char max8997_reg_ldo(int uV)
|
|
{
|
|
unsigned char ret;
|
|
if (uV <= 800000)
|
|
return 0;
|
|
if (uV >= 3950000)
|
|
return MAX8997_LDO_MAX_VAL;
|
|
ret = (uV - 800000) / 50000;
|
|
if (ret > MAX8997_LDO_MAX_VAL) {
|
|
printf("MAX8997 LDO SETTING ERROR (%duV) -> %u\n", uV, ret);
|
|
ret = MAX8997_LDO_MAX_VAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pmic_charger_state(struct pmic *p, int state, int current)
|
|
{
|
|
unsigned char fc;
|
|
u32 val = 0;
|
|
|
|
if (pmic_probe(p))
|
|
return -1;
|
|
|
|
if (state == PMIC_CHARGER_DISABLE) {
|
|
puts("Disable the charger.\n");
|
|
pmic_reg_read(p, MAX8997_REG_MBCCTRL2, &val);
|
|
val &= ~(MBCHOSTEN | VCHGR_FC);
|
|
pmic_reg_write(p, MAX8997_REG_MBCCTRL2, val);
|
|
|
|
return -1;
|
|
}
|
|
|
|
if (current < CHARGER_MIN_CURRENT || current > CHARGER_MAX_CURRENT) {
|
|
printf("%s: Wrong charge current: %d [mA]\n",
|
|
__func__, current);
|
|
return -1;
|
|
}
|
|
|
|
fc = (current - CHARGER_MIN_CURRENT) / CHARGER_CURRENT_RESOLUTION;
|
|
fc = fc & 0xf; /* up to 950 mA */
|
|
|
|
printf("Enable the charger @ %d [mA]\n", fc * CHARGER_CURRENT_RESOLUTION
|
|
+ CHARGER_MIN_CURRENT);
|
|
|
|
val = fc | MBCICHFCSET;
|
|
pmic_reg_write(p, MAX8997_REG_MBCCTRL4, val);
|
|
|
|
pmic_reg_read(p, MAX8997_REG_MBCCTRL2, &val);
|
|
val = MBCHOSTEN | VCHGR_FC; /* enable charger & fast charge */
|
|
pmic_reg_write(p, MAX8997_REG_MBCCTRL2, val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pmic_charger_bat_present(struct pmic *p)
|
|
{
|
|
u32 val;
|
|
|
|
if (pmic_probe(p))
|
|
return -1;
|
|
|
|
pmic_reg_read(p, MAX8997_REG_STATUS4, &val);
|
|
|
|
return !(val & DETBAT);
|
|
}
|
|
|
|
static struct power_chrg power_chrg_pmic_ops = {
|
|
.chrg_bat_present = pmic_charger_bat_present,
|
|
.chrg_state = pmic_charger_state,
|
|
};
|
|
|
|
int pmic_init(unsigned char bus)
|
|
{
|
|
static const char name[] = "MAX8997_PMIC";
|
|
struct pmic *p = pmic_alloc();
|
|
|
|
if (!p) {
|
|
printf("%s: POWER allocation error!\n", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
debug("Board PMIC init\n");
|
|
|
|
p->name = name;
|
|
p->interface = PMIC_I2C;
|
|
p->number_of_regs = PMIC_NUM_OF_REGS;
|
|
p->hw.i2c.addr = MAX8997_I2C_ADDR;
|
|
p->hw.i2c.tx_num = 1;
|
|
p->bus = bus;
|
|
|
|
p->chrg = &power_chrg_pmic_ops;
|
|
return 0;
|
|
}
|