diff options
Diffstat (limited to 'common/battery_bq20z453.c')
| -rw-r--r-- | common/battery_bq20z453.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/common/battery_bq20z453.c b/common/battery_bq20z453.c new file mode 100644 index 0000000000..f3ac7dd4d4 --- /dev/null +++ b/common/battery_bq20z453.c @@ -0,0 +1,38 @@ +/* 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. + * + * Smart battery driver for BQ20Z453. + */ + +#include "host_command.h" +#include "smart_battery.h" +#include "timer.h" + +#define PARAM_CUT_OFF 0x0010 + +int battery_command_cut_off(struct host_cmd_handler_args *args) +{ + /* + * TODO: Since this is a host command, the i2c bus is claimed by host. + * Thus, we would send back the response in advanced so that + * the host can release the bus and then EC can send command to + * battery. + * + * Refactoring this via task is a way. However, it is wasteful. + * Need a light-weight solution. + */ + args->result = EC_RES_SUCCESS; + args->send_response(args); + + /* This function would try to claim i2c and then send to battery. */ + sb_write(SB_MANUFACTURER_ACCESS, PARAM_CUT_OFF); + + return EC_RES_SUCCESS; + /* + * Not sure if there is a side-effect since this could send result + * back to host TWICE. + */ +} +DECLARE_HOST_COMMAND(EC_CMD_BATTERY_CUT_OFF, battery_command_cut_off, + EC_VER_MASK(0)); |