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| author | yh.huang <yh.huang@mediatek.com> | 2015-01-29 20:07:49 +0800 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-03-09 06:15:46 +0000 |
| commit | 9eb1380d63752967306b6f0af8456ad7f94d8b17 (patch) | |
| tree | 8f997a88dabe41bce30428f2bbe4e607046df349 | |
| parent | 28d77f0c534227ec60d2b6a476033c42927c05ba (diff) | |
| download | chrome-ec-9eb1380d63752967306b6f0af8456ad7f94d8b17.tar.gz | |
llama: implement battery ship shutdown mode
Support battery cut-off as host command and console command.
BUG=none
BRANCH=master
TEST=tested "cutoff" console command cuts off battery
BOARD=llama
Change-Id: Id5c67d296b7ecfac99389d5cfcdcaa79da9ad4f3
Signed-off-by: Ben Lok <ben.lok@mediatek.com>
(cherry picked from commit 0274ffd14a35b478b8efa74cdd2d3303da96ec54)
Reviewed-on: https://chromium-review.googlesource.com/255440
Reviewed-by: Alec Berg <alecaberg@chromium.org>
| -rw-r--r-- | board/llama/battery.c | 39 | ||||
| -rw-r--r-- | board/llama/board.h | 2 |
2 files changed, 40 insertions, 1 deletions
diff --git a/board/llama/battery.c b/board/llama/battery.c index a7d46e33c3..b3c2d53210 100644 --- a/board/llama/battery.c +++ b/board/llama/battery.c @@ -1,4 +1,18 @@ +/* Copyright 2015 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 "i2c.h" +#include "util.h" + +/* Shutdown mode parameter to write to manufacturer access register */ +#define PARAM_CUT_OFF_LOW 0x10 +#define PARAM_CUT_OFF_HIGH 0x00 static const struct battery_info info = { .voltage_max = 8700, @@ -20,3 +34,28 @@ const struct battery_info *battery_get_info(void) { return &info; } + +static int cutoff(void) +{ + int rv; + uint8_t buf[3]; + + /* Ship mode command must be sent twice to take effect */ + buf[0] = SB_MANUFACTURER_ACCESS & 0xff; + buf[1] = PARAM_CUT_OFF_LOW; + buf[2] = PARAM_CUT_OFF_HIGH; + + i2c_lock(I2C_PORT_BATTERY, 1); + rv = i2c_xfer(I2C_PORT_BATTERY, BATTERY_ADDR, buf, 3, NULL, 0, + I2C_XFER_SINGLE); + rv |= i2c_xfer(I2C_PORT_BATTERY, BATTERY_ADDR, buf, 3, NULL, 0, + I2C_XFER_SINGLE); + i2c_lock(I2C_PORT_BATTERY, 0); + + return rv; +} + +int board_cut_off_battery(void) +{ + return cutoff(); +} diff --git a/board/llama/board.h b/board/llama/board.h index fc2d37ec29..a2091be9cc 100644 --- a/board/llama/board.h +++ b/board/llama/board.h @@ -10,7 +10,7 @@ #define CONFIG_CHIPSET_MEDIATEK /* Add for AC adaptor, charger, battery */ -#undef CONFIG_BATTERY_CUT_OFF +#define CONFIG_BATTERY_CUT_OFF #define CONFIG_BATTERY_SMART #define CONFIG_BOARD_PRE_INIT #define CONFIG_CHARGER |