1 files changed, 123 insertions, 0 deletions
diff --git a/drivers/power/pmic/pmic_max8997.c b/drivers/power/pmic/pmic_max8997.c
new file mode 100644
index 0000000000..4e5c6d647f
--- /dev/null
+++ b/drivers/power/pmic/pmic_max8997.c
@@ -0,0 +1,123 @@
+/*
+ *  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/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 == 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;
+}