From 3e664f6d50ea7f5d6ea96a028fc8f099236e99be Mon Sep 17 00:00:00 2001
From: Balaji T K <balajitk@ti.com>
Date: Thu, 25 Nov 2010 16:22:04 +0530
Subject: ARMV7: OMAP4: twl6030 add battery charging support

Add battery charging support twl6030 driver.
Add support for battery voltage and current measurements.
Add command to get battery status and start/stop battery charging from USB.

Signed-off-by: Balaji T K <balajitk@ti.com>
Tested-by: Steve Sakoman <steve.sakoman@linaro.org>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
---
 board/ti/sdp4430/Makefile  |  2 +-
 board/ti/sdp4430/cmd_bat.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++
 board/ti/sdp4430/sdp.c     |  4 ++++
 3 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 board/ti/sdp4430/cmd_bat.c

(limited to 'board/ti/sdp4430')

diff --git a/board/ti/sdp4430/Makefile b/board/ti/sdp4430/Makefile
index bce8534..f1ee544 100644
--- a/board/ti/sdp4430/Makefile
+++ b/board/ti/sdp4430/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS	:= sdp.o
+COBJS	:= sdp.o cmd_bat.o
 
 SRCS	:= $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
diff --git a/board/ti/sdp4430/cmd_bat.c b/board/ti/sdp4430/cmd_bat.c
new file mode 100644
index 0000000..fe33538
--- /dev/null
+++ b/board/ti/sdp4430/cmd_bat.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * 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 <command.h>
+
+#ifdef CONFIG_CMD_BAT
+#include <twl6030.h>
+
+int do_vbat(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	if (argc == 2) {
+		if (strncmp(argv[1], "startcharge", 12) == 0)
+			twl6030_start_usb_charging();
+		else if (strncmp(argv[1], "stopcharge", 11) == 0)
+			twl6030_stop_usb_charging();
+		else if (strncmp(argv[1], "status", 7) == 0) {
+			twl6030_get_battery_voltage();
+			twl6030_get_battery_current();
+		} else {
+			goto bat_cmd_usage;
+		}
+	} else {
+		goto bat_cmd_usage;
+	}
+	return 0;
+
+bat_cmd_usage:
+	return cmd_usage(cmdtp);
+}
+
+U_BOOT_CMD(
+	bat, 2, 1, do_vbat,
+	"battery charging, voltage/current measurements",
+	"status - display battery voltage and current\n"
+	"bat startcharge - start charging via USB\n"
+	"bat stopcharge - stop charging\n"
+);
+#endif /* CONFIG_BAT_CMD */
diff --git a/board/ti/sdp4430/sdp.c b/board/ti/sdp4430/sdp.c
index 01d5ce4..b13c4c5 100644
--- a/board/ti/sdp4430/sdp.c
+++ b/board/ti/sdp4430/sdp.c
@@ -23,6 +23,7 @@
  * MA 02111-1307 USA
  */
 #include <common.h>
+#include <twl6030.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/mmc_host_def.h>
 
@@ -63,6 +64,9 @@ int board_eth_init(bd_t *bis)
  */
 int misc_init_r(void)
 {
+#ifdef CONFIG_TWL6030_POWER
+	twl6030_init_battery_charging();
+#endif
 	return 0;
 }
 
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