uboot-vybrid_public/drivers/power/pmic/muic_max8997.c

/*
 *  Copyright (C) 2012 Samsung Electronics
 *  Lukasz Majewski <l.majewski@samsung.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <power/pmic.h>
#include <power/power_chrg.h>
#include <power/max8997_muic.h>
#include <i2c.h>
#include <errno.h>

static int power_chrg_get_type(struct pmic *p)
{
	unsigned int val;
	unsigned char charge_type, charger;

	if (pmic_probe(p))
		return CHARGER_NO;

	pmic_reg_read(p, MAX8997_MUIC_STATUS2, &val);
	charge_type = val & MAX8997_MUIC_CHG_MASK;

	switch (charge_type) {
	case MAX8997_MUIC_CHG_NO:
		charger = CHARGER_NO;
		break;
	case MAX8997_MUIC_CHG_USB:
	case MAX8997_MUIC_CHG_USB_D:
		charger = CHARGER_USB;
		break;
	case MAX8997_MUIC_CHG_TA:
	case MAX8997_MUIC_CHG_TA_1A:
		charger = CHARGER_TA;
		break;
	case MAX8997_MUIC_CHG_TA_500:
		charger = CHARGER_TA_500;
		break;
	default:
		charger = CHARGER_UNKNOWN;
		break;
	}

	return charger;
}

static struct power_chrg power_chrg_muic_ops = {
	.chrg_type = power_chrg_get_type,
};

int power_muic_init(unsigned int bus)
{
	static const char name[] = "MAX8997_MUIC";
	struct pmic *p = pmic_alloc();

	if (!p) {
		printf("%s: POWER allocation error!\n", __func__);
		return -ENOMEM;
	}

	debug("Board Micro USB Interface Controller init\n");

	p->name = name;
	p->interface = PMIC_I2C;
	p->number_of_regs = MUIC_NUM_OF_REGS;
	p->hw.i2c.addr = MAX8997_MUIC_I2C_ADDR;
	p->hw.i2c.tx_num = 1;
	p->bus = bus;

	p->chrg = &power_chrg_muic_ops;
	return 0;
}