[U-Boot] [PATCH 15/16] arm:trats:pmic: Support for charging battery at Samsung's TRATS board

[Lukasz Majewski]

The battery connected to Samsung's Trats development board is now
charged when voltage drops below threshold.

Signed-off-by: Lukasz Majewski <l.majewski at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
Cc: Minkyu Kang <mk7.kang at samsung.com>
---
 board/samsung/trats/trats.c |   37 +++++++++++++++++++++++++++++++++++++
 1 files changed, 37 insertions(+), 0 deletions(-)

diff --git a/board/samsung/trats/trats.c b/board/samsung/trats/trats.c
index 6462b30..21050c8 100644
--- a/board/samsung/trats/trats.c
+++ b/board/samsung/trats/trats.c
@@ -39,6 +39,7 @@
 #include <power/max8997_pmic.h>
 #include <libtizen.h>
 #include <power/max8997_muic.h>
+#include <power/power_chrg.h>
 #include <power/max17042_fg.h>
 
 #include "setup.h"
@@ -240,6 +241,8 @@ static int pmic_init_max8997(void)
 #ifdef CONFIG_POWER_INIT
 int power_board_init(void)
 {
+	int chrg, k;
+	struct battery bat;
 
 #ifdef CONFIG_PMIC
 	pmic_init(I2C_5);
@@ -247,6 +250,40 @@ int power_board_init(void)
 	pmic_init_max8997();
 	power_fg_init(I2C_9);
 	power_muic_init(I2C_5);
+
+	chrg = power_chrg_get_type();
+	debug("CHARGER TYPE: %d\n", chrg);
+
+	if (!pmic_charger_bat_present()) {
+		puts("No battery detected\n");
+		return -1;
+	}
+
+	power_check_battery(&bat);
+
+	if (bat.state == CHARGE && chrg == CHARGER_USB) {
+		puts("CHARGER ENABLE\n");
+		if (pmic_charger_state(CHARGER_ENABLE, 450))
+			return -1;
+
+		for (k = 0; pmic_charger_bat_present() &&
+			     power_chrg_get_type() &&
+			     bat.state_of_chrg < 5; k++) {
+			udelay(10000000);
+			puts(".");
+			power_update_battery(&bat);
+
+			if (k == 100) {
+				printf(" %d [V]\n", bat.voltage_uV);
+				k = 0;
+			}
+
+		}
+
+		puts("CHARGER DISABLE\n");
+		pmic_charger_state(CHARGER_DISABLE, 0);
+	}
+
 	return 0;
 }
 #endif
-- 
1.7.2.3