summaryrefslogtreecommitdiff
path: root/board/squawks/battery.c
diff options
context:
space:
mode:
Diffstat (limited to 'board/squawks/battery.c')
-rw-r--r--board/squawks/battery.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/board/squawks/battery.c b/board/squawks/battery.c
new file mode 100644
index 0000000000..156818d7fd
--- /dev/null
+++ b/board/squawks/battery.c
@@ -0,0 +1,68 @@
+/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * Battery pack vendor provided charging profile
+ */
+
+#include "battery.h"
+#include "battery_smart.h"
+#include "console.h"
+#include "gpio.h"
+#include "host_command.h"
+#include "util.h"
+
+/* Shutdown mode parameter to write to manufacturer access register */
+#define SB_SHUTDOWN_DATA 0x0010
+
+/* 3S1P battery */
+static const struct battery_info info = {
+ .voltage_max = 12600, /* mV */
+ .voltage_normal = 10800,
+ .voltage_min = 8250,
+ /*
+ * Precharge current max is 400 mA, but 384 mA is as close to that
+ * as the charger can get without going over.
+ */
+ .precharge_current = 384, /* mA */
+ .start_charging_min_c = 10,
+ .start_charging_max_c = 45,
+ .charging_min_c = 10,
+ .charging_max_c = 45,
+ .discharging_min_c = -20,
+ .discharging_max_c = 60,
+};
+
+const struct battery_info *battery_get_info(void)
+{
+ return &info;
+}
+
+static int cutoff(void)
+{
+ int rv;
+
+ /* Ship mode command must be sent twice to take effect */
+ rv = sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA);
+
+ if (rv != EC_SUCCESS)
+ return rv;
+
+ return sb_write(SB_MANUFACTURER_ACCESS, SB_SHUTDOWN_DATA);
+}
+
+static int battery_command_cut_off(struct host_cmd_handler_args *args)
+{
+ return cutoff() ? EC_RES_SUCCESS : EC_RES_ERROR;
+}
+DECLARE_HOST_COMMAND(EC_CMD_BATTERY_CUT_OFF, battery_command_cut_off,
+ EC_VER_MASK(0));
+
+static int command_battcutoff(int argc, char **argv)
+{
+ return cutoff();
+}
+DECLARE_CONSOLE_COMMAND(battcutoff, command_battcutoff,
+ NULL,
+ "Enable battery cutoff (ship mode)",
+ NULL);