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Add charger_get_params() function to query charger state.

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This returns all the parameters of the charger that must be monitored
frequently. While some of the fields are charger-specific, all of the
parameters are present in all supported chargers.

Nothing uses this yet.

BUG=chrome-os-partner:20881
BRANCH=ToT
TEST=make buildall -j

All targets build; all tests pass.

Change-Id: Id3e00532469b193aeab3acf93e94afe3ffb8c6b6
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/191985
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This commit is contained in:
Bill Richardson
2014-03-27 13:37:21 -07:00
parent 91a5fa0194
commit 9151377708
3 changed files with 48 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
board/host/charger.c
View File

@@ -36,7 +36,7 @@ const struct charger_info *charger_get_info(void)
}
int charger_get_status(int *status)
int charger_get_status(int *status)
{
*status = CHARGER_LEVEL_2;
if (mock_option & CHARGE_FLAG_INHIBIT_CHARGE)

20
common/charger.c
View File

@@ -96,6 +96,26 @@ int charger_closest_current(int current)
return current - (current % info->current_step);
}
void charger_get_params(struct charger_params *chg)
{
memset(chg, 0, sizeof(*chg));
if (charger_get_current(&chg->current))
chg->flags |= CHG_FLAG_BAD_CURRENT;
if (charger_get_voltage(&chg->voltage))
chg->flags |= CHG_FLAG_BAD_VOLTAGE;
if (charger_get_input_current(&chg->input_current))
chg->flags |= CHG_FLAG_BAD_INPUT_CURRENT;
if (charger_get_status(&chg->status))
chg->flags |= CHG_FLAG_BAD_STATUS;
if (charger_get_option(&chg->option))
chg->flags |= CHG_FLAG_BAD_OPTION;
}
static void print_item_name(const char *name)
{
ccprintf(" %-8s", name);

34
include/charger.h
View File

@@ -27,21 +27,41 @@ struct charger_info {
uint16_t input_current_step;
};
/*
* Parameters common to all chargers. Current is in mA, voltage in mV.
* The status and option values are charger-specific.
*/
struct charger_params {
int current;
int voltage;
int input_current;
int status;
int option;
int flags;
};
/* Get the current charger_params. Failures are reported in .flags */
void charger_get_params(struct charger_params *chg);
/* Bits to indicate which fields of struct charger_params could not be read */
#define CHG_FLAG_BAD_CURRENT 0x00000001
#define CHG_FLAG_BAD_VOLTAGE 0x00000002
#define CHG_FLAG_BAD_INPUT_CURRENT 0x00000004
#define CHG_FLAG_BAD_STATUS 0x00000008
#define CHG_FLAG_BAD_OPTION 0x00000010
/* All of the above CHG_FLAG_BAD_* bits */
#define CHG_FLAG_BAD_ANY 0x0000001f
/* Power state machine post init */
int charger_post_init(void);
/* Get charger information. */
const struct charger_info *charger_get_info(void);
/* Get smart battery charger status. Supported flags:
* CHARGER_CHARGE_INHIBITED
* CHARGER_LEVEL_2
*/
/* Get smart battery charger status. Supported flags may vary. */
int charger_get_status(int *status);
/* Set smart battery charger mode. Supported mode(s):
* CHARGER_FLAG_INHIBIT_CHARGE
*/
/* Set smart battery charger mode. Supported modes may vary. */
int charger_set_mode(int mode);
/**