pmic:fuel-gauge: Support for MAX17042 fuel-gauge

Support for MAX17042 fuel-gauge (FG), which is built into the MAX8997
power management device.
Special file - fg_battery_cell_params.h with cells characteristics
added.

The FG 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>

2 files changed, 164 insertions, 0 deletions

diff --git a/include/power/fg_battery_cell_params.h b/include/power/fg_battery_cell_params.h
new file mode 100644
index 0000000..7ddf6f2
--- /dev/null
+++ b/include/power/fg_battery_cell_params.h
@@ -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
+ */
+
+#ifndef __FG_BATTERY_CELL_PARAMS_H_
+#define __FG_BATTERY_CELL_PARAMS_H_
+
+#if  defined(CONFIG_POWER_FG_MAX17042) && defined(CONFIG_TRATS)
+
+/* Cell characteristics - Exynos4 TRATS development board */
+/* Shall be written to addr 0x80h */
+u16 cell_character0[16] = {
+	0xA2A0,
+	0xB6E0,
+	0xB850,
+	0xBAD0,
+	0xBB20,
+	0xBB70,
+	0xBBC0,
+	0xBC20,
+	0xBC80,
+	0xBCE0,
+	0xBD80,
+	0xBE20,
+	0xC090,
+	0xC420,
+	0xC910,
+	0xD070
+};
+
+/* Shall be written to addr 0x90h */
+u16 cell_character1[16] = {
+	0x0090,
+	0x1A50,
+	0x02F0,
+	0x2060,
+	0x2060,
+	0x2E60,
+	0x26A0,
+	0x2DB0,
+	0x2DB0,
+	0x1870,
+	0x2A20,
+	0x16F0,
+	0x08F0,
+	0x0D40,
+	0x08C0,
+	0x08C0
+};
+
+/* Shall be written to addr 0xA0h */
+u16 cell_character2[16] = {
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100,
+	0x0100
+};
+#endif
+#endif /* __FG_BATTERY_CELL_PARAMS_H_ */
diff --git a/include/power/max17042_fg.h b/include/power/max17042_fg.h
new file mode 100644
index 0000000..1103a48
--- /dev/null
+++ b/include/power/max17042_fg.h
@@ -0,0 +1,74 @@
+/*
+ *  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 __MAX17042_FG_H_
+#define __MAX17042_FG_H_
+
+/* MAX 17042 registers */
+enum {
+	MAX17042_STATUS         = 0x00,
+	MAX17042_SOCREP         = 0x06,
+	MAX17042_VCELL          = 0x09,
+	MAX17042_CURRENT        = 0x0A,
+	MAX17042_AVG_CURRENT	= 0x0B,
+	MAX17042_SOCMIX	= 0x0D,
+	MAX17042_SOCAV		= 0x0E,
+	MAX17042_DESIGN_CAP	= 0x18,
+	MAX17042_AVG_VCELL	= 0x19,
+	MAX17042_CONFIG	= 0x1D,
+	MAX17042_VERSION	= 0x21,
+	MAX17042_LEARNCFG       = 0x28,
+	MAX17042_FILTERCFG	= 0x29,
+	MAX17042_RELAXCFG	= 0x2A,
+	MAX17042_MISCCFG	= 0x2B,
+	MAX17042_CGAIN		= 0x2E,
+	MAX17042_COFF		= 0x2F,
+	MAX17042_RCOMP0	= 0x38,
+	MAX17042_TEMPCO	= 0x39,
+	MAX17042_FSTAT		= 0x3D,
+	MAX17042_MLOCKReg1	= 0x62,
+	MAX17042_MLOCKReg2	= 0x63,
+	MAX17042_MODEL1         = 0x80,
+	MAX17042_MODEL2         = 0x90,
+	MAX17042_MODEL3         = 0xA0,
+	MAX17042_VFOCV		= 0xFB,
+	MAX17042_VFSOC		= 0xFF,
+
+	FG_NUM_OF_REGS = 0x100,
+};
+
+#define RCOMP0			0x0060
+#define TempCo			0x1015
+
+
+#define MAX17042_POR (1 << 1)
+
+#define MODEL_UNLOCK1		0x0059
+#define MODEL_UNLOCK2		0x00c4
+#define MODEL_LOCK1		0x0000
+#define MODEL_LOCK2		0x0000
+
+#define MAX17042_I2C_ADDR	(0x6C >> 1)
+
+int power_fg_init(unsigned char bus);
+#endif /* __MAX17042_FG_H_ */