From 1cf855535b034579ac4d39f49da853594ce968dc Mon Sep 17 00:00:00 2001 From: Phil Reid Date: Thu, 24 Aug 2017 17:31:10 +0800 Subject: power: supply: sbs-battery: move gpio present detect to sbs_get_property Currently when a gpio is defined for battery presence it is only used in the sbs_get_battery_presence_and_health function for 2 properties. All other properties currently try to read data form the battery before returning an error if not present. We should know in advance that no data is going to returned. As the driver tries multiple times to access a property, this prevents a lot of smbus accesses, which had a significant effect on device boot-up. As when the device is registered lots of property accesses are attempted during boot. If no gpio is used for presence detection no change in behaviour should occur. Signed-off-by: Phil Reid Reviewed-by: Sebastian Reichel Signed-off-by: Wolfram Sang --- drivers/power/supply/sbs-battery.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c index b19a73176910..8dd4bd70c561 100644 --- a/drivers/power/supply/sbs-battery.c +++ b/drivers/power/supply/sbs-battery.c @@ -321,16 +321,6 @@ static int sbs_get_battery_presence_and_health( union power_supply_propval *val) { s32 ret; - struct sbs_info *chip = i2c_get_clientdata(client); - - if (psp == POWER_SUPPLY_PROP_PRESENT && chip->gpio_detect) { - ret = gpiod_get_value_cansleep(chip->gpio_detect); - if (ret < 0) - return ret; - val->intval = ret; - chip->is_present = val->intval; - return ret; - } /* * Write to ManufacturerAccess with ManufacturerAccess command @@ -598,6 +588,19 @@ static int sbs_get_property(struct power_supply *psy, struct sbs_info *chip = power_supply_get_drvdata(psy); struct i2c_client *client = chip->client; + if (chip->gpio_detect) { + ret = gpiod_get_value_cansleep(chip->gpio_detect); + if (ret < 0) + return ret; + if (psp == POWER_SUPPLY_PROP_PRESENT) { + val->intval = ret; + chip->is_present = val->intval; + return 0; + } + if (ret == 0) + return -ENODATA; + } + switch (psp) { case POWER_SUPPLY_PROP_PRESENT: case POWER_SUPPLY_PROP_HEALTH: -- cgit v1.2.3