From 76a8dac4d7abc893395cd585919a01569ad84ca0 Mon Sep 17 00:00:00 2001 From: Kenny Kessler Date: Thu, 28 Feb 2019 10:48:50 -0600 Subject: [PATCH] power: max170xx: Add Age Create a new group and make the age parameter. This will be added to the power supply kobject so that it shows up in that power supply's sysfs directory. Change-Id: I95cc23242df5bd7096d0b4e554e31647e46ce3a4 Signed-off-by: Kenny Kessler Reviewed-on: https://gerrit.mot.com/1315612 SME-Granted: SME Approvals Granted SLTApproved: Slta Waiver Tested-by: Jira Key Reviewed-by: Eyob Tesfu Reviewed-by: Kenneth Kessler Submit-Approved: Jira Key --- drivers/power/max170xx/max170xx_battery_mmi.c | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/power/max170xx/max170xx_battery_mmi.c b/drivers/power/max170xx/max170xx_battery_mmi.c index f87e9ed20181..7c06bbf40d77 100644 --- a/drivers/power/max170xx/max170xx_battery_mmi.c +++ b/drivers/power/max170xx/max170xx_battery_mmi.c @@ -2258,6 +2258,45 @@ static const struct power_supply_desc max17042_no_current_sense_psy_desc = { .num_properties = ARRAY_SIZE(max17042_battery_props) - 2, }; +static ssize_t age_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct power_supply *psy; + struct max17042_chip *chip; + int age, ret; + u32 data; + psy = dev_get_drvdata(dev); + if (psy) + chip = power_supply_get_drvdata(psy); + else { + pr_err("MAX170xx: No Age PSY\n"); + return 0; + } + + ret = regmap_read(chip->regmap, MAX17042_FullCAP, &data); + if (ret < 0) + return 0; + if (!chip->charge_full_des) + return 0; + + age = data * chip->fctr_uah_bit; + age *= 100; + age /= chip->charge_full_des; + + return scnprintf(buf, 50, "%d\n", age); +} +static DEVICE_ATTR(age, S_IRUGO, age_show, NULL); + +static struct attribute * max_g[] = { + &dev_attr_age.attr, + NULL, +}; + +static const struct attribute_group power_supply_max_attr_group = { + .attrs = max_g, +}; + #define MAX_CGAIN 0x7FFF static int max17042_probe(struct i2c_client *client, const struct i2c_device_id *id) @@ -2341,6 +2380,10 @@ static int max17042_probe(struct i2c_client *client, dev_err(&client->dev, "failed: power supply register\n"); return PTR_ERR(chip->battery); } + ret = sysfs_create_group(&chip->battery->dev.kobj, + &power_supply_max_attr_group); + if (ret) + dev_err(&client->dev, "failed: attr create\n"); chip->factory_mode = max17042_mmi_factory(); if (chip->factory_mode)