pmic:muic: Support for MUIC built into MAX8997 device

Support for MUIC (Micro USB Integrated Circuit) built into the MAX8997
power management device.

The MUIC device will work with redesigned PMIC framework.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Stefano Babic <sbabic@denx.de>

drivers/power/pmic/Makefile

@@ -27,6 +27,7 @@ LIB	:= $(obj)libpmic.o
 
 COBJS-$(CONFIG_PMIC_MAX8998) += pmic_max8998.o
 COBJS-$(CONFIG_PMIC_MAX8997) += pmic_max8997.o
+COBJS-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o
 
 COBJS	:= $(COBJS-y)
 SRCS	:= $(COBJS:.o=.c)

drivers/power/pmic/muic_max8997.c

@@ -0,0 +1,90 @@
+/*
+ *  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;
+}

include/power/max8997_muic.h

@@ -0,0 +1,61 @@
+/*
+ *  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
+ */
+
+#ifndef __MAX8997_MUIC_H_
+#define __MAX8997_MUIC_H_
+
+#include <power/power_chrg.h>
+
+/* MAX8997_MUIC_STATUS2 */
+#define MAX8997_MUIC_CHG_NO	0x00
+#define MAX8997_MUIC_CHG_USB	0x01
+#define MAX8997_MUIC_CHG_USB_D	0x02
+#define MAX8997_MUIC_CHG_TA	0x03
+#define MAX8997_MUIC_CHG_TA_500 0x04
+#define MAX8997_MUIC_CHG_TA_1A	0x05
+#define MAX8997_MUIC_CHG_MASK	0x07
+
+/* MAX 8997 MUIC registers */
+enum {
+	MAX8997_MUIC_ID         = 0x00,
+	MAX8997_MUIC_INT1	= 0x01,
+	MAX8997_MUIC_INT2	= 0x02,
+	MAX8997_MUIC_INT3	= 0x03,
+	MAX8997_MUIC_STATUS1	= 0x04,
+	MAX8997_MUIC_STATUS2	= 0x05,
+	MAX8997_MUIC_STATUS3	= 0x06,
+	MAX8997_MUIC_INTMASK1	= 0x07,
+	MAX8997_MUIC_INTMASK2	= 0x08,
+	MAX8997_MUIC_INTMASK3	= 0x09,
+	MAX8997_MUIC_CDETCTRL	= 0x0A,
+	MAX8997_MUIC_CONTROL1	= 0x0C,
+	MAX8997_MUIC_CONTROL2	= 0x0D,
+	MAX8997_MUIC_CONTROL3	= 0x0E,
+
+	MUIC_NUM_OF_REGS = 0x0F,
+};
+
+#define MAX8997_MUIC_I2C_ADDR	(0x4A >> 1)
+
+int power_muic_init(unsigned int bus);
+#endif /* __MAX8997_MUIC_H_ */