From bf995a9a28c7a987be0b3df9d4f84da63c9bfb1c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=81ukasz=20Majewski?= <l.majewski@samsung.com>
Date: Tue, 13 Nov 2012 03:22:04 +0000
Subject: pmic:max8997: Function for calculating LDO internal register value

Function for calculating LDO internal register value from passed micro
Volt.

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/pmic_max8997.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'drivers')

diff --git a/drivers/power/pmic/pmic_max8997.c b/drivers/power/pmic/pmic_max8997.c
index 7fe1b53ff..2e46884dd 100644
--- a/drivers/power/pmic/pmic_max8997.c
+++ b/drivers/power/pmic/pmic_max8997.c
@@ -27,6 +27,22 @@
 #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;
+}
+
 int pmic_init(unsigned char bus)
 {
 	static const char name[] = "MAX8997_PMIC";
-- 
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