[U-Boot] [PATCH 08/16] pmic:muic: Support for MUIC built into MAX8997 device

[Lukasz Majewski]

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 at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
Cc: Stefano Babic <sbabic at denx.de>
---
 drivers/misc/Makefile        |    1 +
 drivers/misc/muic_max8997.c  |   80 ++++++++++++++++++++++++++++++++++++++++++
 include/power/max8997_muic.h |   61 ++++++++++++++++++++++++++++++++
 include/power/power_chrg.h   |    1 +
 4 files changed, 143 insertions(+), 0 deletions(-)
 create mode 100644 drivers/misc/muic_max8997.c
 create mode 100644 include/power/max8997_muic.h

diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 271463c..f08a800 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -41,6 +41,7 @@ COBJS-$(CONFIG_PMIC_I2C) += pmic_i2c.o
 COBJS-$(CONFIG_PMIC_SPI) += pmic_spi.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)
diff --git a/drivers/misc/muic_max8997.c b/drivers/misc/muic_max8997.c
new file mode 100644
index 0000000..d332c09
--- /dev/null
+++ b/drivers/misc/muic_max8997.c
@@ -0,0 +1,80 @@
+/*
+ *  Copyright (C) 2012 Samsung Electronics
+ *  Lukasz Majewski <l.majewski at 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>
+
+int power_muic_init(unsigned int bus)
+{
+	struct pmic *p = pmic_alloc();
+	static const char name[] = "MAX8997_MUIC";
+
+	puts("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;
+
+	return 0;
+}
+
+int power_chrg_get_type(void)
+{
+	unsigned int val;
+	unsigned char charge_type, charger;
+	struct pmic *p = pmic_get("MAX8997_MUIC");
+
+	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;
+}
diff --git a/include/power/max8997_muic.h b/include/power/max8997_muic.h
new file mode 100644
index 0000000..0149c12
--- /dev/null
+++ b/include/power/max8997_muic.h
@@ -0,0 +1,61 @@
+/*
+ *  Copyright (C) 2012 Samsung Electronics
+ *  Lukasz Majewski <l.majewski at 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_ */
diff --git a/include/power/power_chrg.h b/include/power/power_chrg.h
index fb3c3a6..ecbad46 100644
--- a/include/power/power_chrg.h
+++ b/include/power/power_chrg.h
@@ -50,4 +50,5 @@ struct battery {
 	unsigned int state;
 };
 
+int power_chrg_get_type(void);
 #endif /* __POWER_CHARGER_H_ */
-- 
1.7.2.3