diff options
Diffstat (limited to 'drivers/staging/greybus/interface.c')
| -rw-r--r-- | drivers/staging/greybus/interface.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/staging/greybus/interface.c b/drivers/staging/greybus/interface.c index 27dbd79d2e19..a4bee41feec4 100644 --- a/drivers/staging/greybus/interface.c +++ b/drivers/staging/greybus/interface.c @@ -263,6 +263,63 @@ static ssize_t version_show(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR_RO(version); +static ssize_t voltage_now_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gb_interface *intf = to_gb_interface(dev); + int ret; + u32 measurement; + + ret = gb_svc_pwrmon_intf_sample_get(intf->hd->svc, intf->interface_id, + GB_SVC_PWRMON_TYPE_VOL, + &measurement); + if (ret) { + dev_err(&intf->dev, "failed to get voltage sample (%d)\n", ret); + return ret; + } + + return sprintf(buf, "%u\n", measurement); +} +static DEVICE_ATTR_RO(voltage_now); + +static ssize_t current_now_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gb_interface *intf = to_gb_interface(dev); + int ret; + u32 measurement; + + ret = gb_svc_pwrmon_intf_sample_get(intf->hd->svc, intf->interface_id, + GB_SVC_PWRMON_TYPE_CURR, + &measurement); + if (ret) { + dev_err(&intf->dev, "failed to get current sample (%d)\n", ret); + return ret; + } + + return sprintf(buf, "%u\n", measurement); +} +static DEVICE_ATTR_RO(current_now); + +static ssize_t power_now_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gb_interface *intf = to_gb_interface(dev); + int ret; + u32 measurement; + + ret = gb_svc_pwrmon_intf_sample_get(intf->hd->svc, intf->interface_id, + GB_SVC_PWRMON_TYPE_PWR, + &measurement); + if (ret) { + dev_err(&intf->dev, "failed to get power sample (%d)\n", ret); + return ret; + } + + return sprintf(buf, "%u\n", measurement); +} +static DEVICE_ATTR_RO(power_now); + static struct attribute *interface_attrs[] = { &dev_attr_ddbl1_manufacturer_id.attr, &dev_attr_ddbl1_product_id.attr, @@ -273,6 +330,9 @@ static struct attribute *interface_attrs[] = { &dev_attr_product_string.attr, &dev_attr_serial_number.attr, &dev_attr_version.attr, + &dev_attr_voltage_now.attr, + &dev_attr_current_now.attr, + &dev_attr_power_now.attr, NULL, }; ATTRIBUTE_GROUPS(interface); |