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| author | Sebastian Reichel <sebastian.reichel@collabora.com> | 2020-05-13 20:56:08 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2020-05-29 00:39:29 +0200 |
| commit | 7721c2fd2668c751f9ba33b35db08b86293869e5 (patch) | |
| tree | 5295ba4129185a58de055ff7a76b1640f746c9d6 /drivers/power/supply/sbs-battery.c | |
| parent | 787fdbcf5b8bce9eea96315eb618f38bf849a76c (diff) | |
| download | linux-7721c2fd2668c751f9ba33b35db08b86293869e5.tar.bz2 | |
power: supply: sbs-battery: add MANUFACTURE_DATE support
Expose the battery's manufacture date to userspace.
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power/supply/sbs-battery.c')
| -rw-r--r-- | drivers/power/supply/sbs-battery.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c index e6f61baa9bed..4fa553d61db2 100644 --- a/drivers/power/supply/sbs-battery.c +++ b/drivers/power/supply/sbs-battery.c @@ -58,6 +58,8 @@ enum { #define SBS_VERSION_1_1 2 #define SBS_VERSION_1_1_WITH_PEC 3 +#define REG_ADDR_MANUFACTURE_DATE 0x1B + /* Battery Mode defines */ #define BATTERY_MODE_OFFSET 0x03 #define BATTERY_MODE_CAPACITY_MASK BIT(15) @@ -171,6 +173,9 @@ static enum power_supply_property sbs_properties[] = { POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN, POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, + POWER_SUPPLY_PROP_MANUFACTURE_YEAR, + POWER_SUPPLY_PROP_MANUFACTURE_MONTH, + POWER_SUPPLY_PROP_MANUFACTURE_DAY, /* Properties of type `const char *' */ POWER_SUPPLY_PROP_MANUFACTURER, POWER_SUPPLY_PROP_MODEL_NAME @@ -682,6 +687,38 @@ static int sbs_get_chemistry(struct i2c_client *client, return 0; } +static int sbs_get_battery_manufacture_date(struct i2c_client *client, + enum power_supply_property psp, + union power_supply_propval *val) +{ + int ret; + u16 day, month, year; + + ret = sbs_read_word_data(client, REG_ADDR_MANUFACTURE_DATE); + if (ret < 0) + return ret; + + day = ret & GENMASK(4, 0); + month = (ret & GENMASK(8, 5)) >> 5; + year = ((ret & GENMASK(15, 9)) >> 9) + 1980; + + switch (psp) { + case POWER_SUPPLY_PROP_MANUFACTURE_YEAR: + val->intval = year; + break; + case POWER_SUPPLY_PROP_MANUFACTURE_MONTH: + val->intval = month; + break; + case POWER_SUPPLY_PROP_MANUFACTURE_DAY: + val->intval = day; + break; + default: + return -EINVAL; + } + + return 0; +} + static int sbs_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) @@ -790,6 +827,12 @@ static int sbs_get_property(struct power_supply *psy, val->strval = manufacturer; break; + case POWER_SUPPLY_PROP_MANUFACTURE_YEAR: + case POWER_SUPPLY_PROP_MANUFACTURE_MONTH: + case POWER_SUPPLY_PROP_MANUFACTURE_DAY: + ret = sbs_get_battery_manufacture_date(client, psp, val); + break; + default: dev_err(&client->dev, "%s: INVALID property\n", __func__); |