diff options
| -rw-r--r-- | Documentation/ABI/testing/sysfs-platform-ideapad-laptop | 9 | ||||
| -rw-r--r-- | drivers/platform/x86/ideapad-laptop.c | 65 |
2 files changed, 65 insertions, 9 deletions
diff --git a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop index fd2ac02bc5bd..b17688d73922 100644 --- a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop +++ b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop @@ -41,3 +41,12 @@ Description: # echo "0" > \ /sys/bus/pci/devices/0000:00:1f.0/PNP0C09:00/VPC2004:00/fn_lock + +What: /sys/bus/platform/devices/VPC2004:*/usb_charging +Date: Feb 2021 +KernelVersion: 5.12 +Contact: platform-driver-x86@vger.kernel.org +Description: + Controls whether the "always on USB charging" feature is + enabled or not. This feature enables charging USB devices + even if the computer is not turned on. diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index 24dcb4ad75ef..6cb5ad4be231 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -62,18 +62,22 @@ enum { }; enum { - HALS_KBD_BL_SUPPORT_BIT = 4, - HALS_KBD_BL_STATE_BIT = 5, - HALS_FNLOCK_SUPPORT_BIT = 9, - HALS_FNLOCK_STATE_BIT = 10, - HALS_HOTKEYS_PRIMARY_BIT = 11, + HALS_KBD_BL_SUPPORT_BIT = 4, + HALS_KBD_BL_STATE_BIT = 5, + HALS_USB_CHARGING_SUPPORT_BIT = 6, + HALS_USB_CHARGING_STATE_BIT = 7, + HALS_FNLOCK_SUPPORT_BIT = 9, + HALS_FNLOCK_STATE_BIT = 10, + HALS_HOTKEYS_PRIMARY_BIT = 11, }; enum { - SALS_KBD_BL_ON = 0x8, - SALS_KBD_BL_OFF = 0x9, - SALS_FNLOCK_ON = 0xe, - SALS_FNLOCK_OFF = 0xf, + SALS_KBD_BL_ON = 0x8, + SALS_KBD_BL_OFF = 0x9, + SALS_USB_CHARGING_ON = 0xa, + SALS_USB_CHARGING_OFF = 0xb, + SALS_FNLOCK_ON = 0xe, + SALS_FNLOCK_OFF = 0xf, }; enum { @@ -134,6 +138,7 @@ struct ideapad_private { bool hw_rfkill_switch : 1; bool kbd_bl : 1; bool touchpad_ctrl_via_ec : 1; + bool usb_charging : 1; } features; struct { bool initialized; @@ -592,12 +597,49 @@ static ssize_t touchpad_store(struct device *dev, static DEVICE_ATTR_RW(touchpad); +static ssize_t usb_charging_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct ideapad_private *priv = dev_get_drvdata(dev); + unsigned long hals; + int err; + + err = eval_hals(priv->adev->handle, &hals); + if (err) + return err; + + return sysfs_emit(buf, "%d\n", !!test_bit(HALS_USB_CHARGING_STATE_BIT, &hals)); +} + +static ssize_t usb_charging_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct ideapad_private *priv = dev_get_drvdata(dev); + bool state; + int err; + + err = kstrtobool(buf, &state); + if (err) + return err; + + err = exec_sals(priv->adev->handle, state ? SALS_USB_CHARGING_ON : SALS_USB_CHARGING_OFF); + if (err) + return err; + + return count; +} + +static DEVICE_ATTR_RW(usb_charging); + static struct attribute *ideapad_attributes[] = { &dev_attr_camera_power.attr, &dev_attr_conservation_mode.attr, &dev_attr_fan_mode.attr, &dev_attr_fn_lock.attr, &dev_attr_touchpad.attr, + &dev_attr_usb_charging.attr, NULL }; @@ -620,6 +662,8 @@ static umode_t ideapad_is_visible(struct kobject *kobj, else if (attr == &dev_attr_touchpad.attr) supported = priv->features.touchpad_ctrl_via_ec && test_bit(CFG_CAP_TOUCHPAD_BIT, &priv->cfg); + else if (attr == &dev_attr_usb_charging.attr) + supported = priv->features.usb_charging; return supported ? attr->mode : 0; } @@ -1459,6 +1503,9 @@ static void ideapad_check_features(struct ideapad_private *priv) if (test_bit(HALS_KBD_BL_SUPPORT_BIT, &val)) priv->features.kbd_bl = true; + + if (test_bit(HALS_USB_CHARGING_SUPPORT_BIT, &val)) + priv->features.usb_charging = true; } } } |