diff options
| author | Alec Berg <alecaberg@chromium.org> | 2015-06-10 10:04:14 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-06-10 21:35:54 +0000 |
| commit | 9c35b4840067ba67e5314c67a160604abe758055 (patch) | |
| tree | 7da9949ebe70191e77e2177454e52e255bc60778 | |
| parent | e05ed041cfe60db7d1bff5424d4579a52aea402f (diff) | |
| download | chrome-ec-9c35b4840067ba67e5314c67a160604abe758055.tar.gz | |
glados: add battery cutoff functionality
Add battery cutoff functionality to glados.
BUG=none
BRANCH=none
TEST=use console cutoff command to verify that it cuts off
battery and plug in zinger to verify that it comes out of it
when AC is applied.
Change-Id: I71ae113c398278ad9f67f3a4cedf6885754a5a72
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/276690
Reviewed-by: Rong Chang <rongchang@chromium.org>
| -rw-r--r-- | board/glados/battery.c | 27 | ||||
| -rw-r--r-- | board/glados/board.h | 3 |
2 files changed, 29 insertions, 1 deletions
diff --git a/board/glados/battery.c b/board/glados/battery.c index 2311120145..3365c93be1 100644 --- a/board/glados/battery.c +++ b/board/glados/battery.c @@ -6,6 +6,13 @@ */ #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 /* Battery info for BQ40Z55 */ static const struct battery_info info = { @@ -25,3 +32,23 @@ const struct battery_info *battery_get_info(void) { return &info; } + +int board_cut_off_battery(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; +} diff --git a/board/glados/board.h b/board/glados/board.h index da54b2a861..923289388b 100644 --- a/board/glados/board.h +++ b/board/glados/board.h @@ -10,6 +10,7 @@ /* Optional features */ #define CONFIG_ADC +#define CONFIG_BATTERY_CUT_OFF #define CONFIG_BATTERY_PRESENT_GPIO GPIO_BAT_PRESENT_L #define CONFIG_BATTERY_SMART #define CONFIG_BUTTON_COUNT 2 @@ -67,7 +68,7 @@ #define I2C_PORT_PMIC MEC1322_I2C3 #undef DEFERRABLE_MAX_COUNT -#define DEFERRABLE_MAX_COUNT 9 +#define DEFERRABLE_MAX_COUNT 10 #ifndef __ASSEMBLER__ |