diff options
| -rw-r--r-- | drivers/platform/x86/toshiba_acpi.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index 6c3e25c65b70..a8b719f481f9 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -151,6 +151,10 @@ MODULE_LICENSE("GPL"); #define SCI_USB_CHARGE_DISABLED 0x30000 #define SCI_USB_CHARGE_ALTERNATE 0x30009 #define SCI_USB_CHARGE_AUTO 0x30021 +#define SCI_USB_CHARGE_BAT_MASK 0x7 +#define SCI_USB_CHARGE_BAT_LVL_OFF 0x1 +#define SCI_USB_CHARGE_BAT_LVL_ON 0x4 +#define SCI_USB_CHARGE_BAT_LVL 0x0200 struct toshiba_acpi_dev { struct acpi_device *acpi_dev; @@ -169,6 +173,7 @@ struct toshiba_acpi_dev { int kbd_type; int kbd_mode; int kbd_time; + int usbsc_bat_level; unsigned int illumination_supported:1; unsigned int video_supported:1; @@ -813,6 +818,61 @@ static int toshiba_usb_sleep_charge_set(struct toshiba_acpi_dev *dev, return 0; } +static int toshiba_sleep_functions_status_get(struct toshiba_acpi_dev *dev, + u32 *mode) +{ + u32 in[TCI_WORDS] = { SCI_GET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 }; + u32 out[TCI_WORDS]; + acpi_status status; + + if (!sci_open(dev)) + return -EIO; + + in[5] = SCI_USB_CHARGE_BAT_LVL; + status = tci_raw(dev, in, out); + sci_close(dev); + if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) { + pr_err("ACPI call to get USB S&C battery level failed\n"); + return -EIO; + } else if (out[0] == TOS_NOT_SUPPORTED) { + pr_info("USB Sleep and Charge not supported\n"); + return -ENODEV; + } else if (out[0] == TOS_INPUT_DATA_ERROR) { + return -EIO; + } + + *mode = out[2]; + + return 0; +} + +static int toshiba_sleep_functions_status_set(struct toshiba_acpi_dev *dev, + u32 mode) +{ + u32 in[TCI_WORDS] = { SCI_SET, SCI_USB_SLEEP_CHARGE, 0, 0, 0, 0 }; + u32 out[TCI_WORDS]; + acpi_status status; + + if (!sci_open(dev)) + return -EIO; + + in[2] = mode; + in[5] = SCI_USB_CHARGE_BAT_LVL; + status = tci_raw(dev, in, out); + sci_close(dev); + if (ACPI_FAILURE(status) || out[0] == TOS_FAILURE) { + pr_err("ACPI call to set USB S&C battery level failed\n"); + return -EIO; + } else if (out[0] == TOS_NOT_SUPPORTED) { + pr_info("USB Sleep and Charge not supported\n"); + return -ENODEV; + } else if (out[0] == TOS_INPUT_DATA_ERROR) { + return -EIO; + } + + return 0; +} + /* Bluetooth rfkill handlers */ static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present) @@ -1372,6 +1432,12 @@ static ssize_t toshiba_usb_sleep_charge_show(struct device *dev, static ssize_t toshiba_usb_sleep_charge_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count); +static ssize_t sleep_functions_on_battery_show(struct device *dev, + struct device_attribute *attr, + char *buf); +static ssize_t sleep_functions_on_battery_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count); static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR, toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store); @@ -1386,6 +1452,9 @@ static DEVICE_ATTR(position, S_IRUGO, toshiba_position_show, NULL); static DEVICE_ATTR(usb_sleep_charge, S_IRUGO | S_IWUSR, toshiba_usb_sleep_charge_show, toshiba_usb_sleep_charge_store); +static DEVICE_ATTR(sleep_functions_on_battery, S_IRUGO | S_IWUSR, + sleep_functions_on_battery_show, + sleep_functions_on_battery_store); static struct attribute *toshiba_attributes[] = { &dev_attr_kbd_backlight_mode.attr, @@ -1395,6 +1464,7 @@ static struct attribute *toshiba_attributes[] = { &dev_attr_touchpad.attr, &dev_attr_position.attr, &dev_attr_usb_sleep_charge.attr, + &dev_attr_sleep_functions_on_battery.attr, NULL, }; @@ -1662,6 +1732,67 @@ static ssize_t toshiba_usb_sleep_charge_store(struct device *dev, return count; } +static ssize_t sleep_functions_on_battery_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev); + u32 state; + int bat_lvl; + int status; + int ret; + int tmp; + + ret = toshiba_sleep_functions_status_get(toshiba, &state); + if (ret < 0) + return ret; + + /* Determine the status: 0x4 - Enabled | 0x1 - Disabled */ + tmp = state & SCI_USB_CHARGE_BAT_MASK; + status = (tmp == 0x4) ? 1 : 0; + /* Determine the battery level set */ + bat_lvl = state >> HCI_MISC_SHIFT; + + return sprintf(buf, "%d %d\n", status, bat_lvl); +} + +static ssize_t sleep_functions_on_battery_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev); + u32 status; + int value; + int ret; + int tmp; + + ret = kstrtoint(buf, 0, &value); + if (ret) + return ret; + + /* Set the status of the function: + * 0 - Disabled + * 1-100 - Enabled + */ + if (value < 0 || value > 100) + return -EINVAL; + + if (value == 0) { + tmp = toshiba->usbsc_bat_level << HCI_MISC_SHIFT; + status = tmp | SCI_USB_CHARGE_BAT_LVL_OFF; + } else { + tmp = value << HCI_MISC_SHIFT; + status = tmp | SCI_USB_CHARGE_BAT_LVL_ON; + } + ret = toshiba_sleep_functions_status_set(toshiba, status); + if (ret < 0) + return ret; + + toshiba->usbsc_bat_level = status >> HCI_MISC_SHIFT; + + return count; +} + static umode_t toshiba_sysfs_is_visible(struct kobject *kobj, struct attribute *attr, int idx) { @@ -1679,6 +1810,8 @@ static umode_t toshiba_sysfs_is_visible(struct kobject *kobj, exists = (drv->accelerometer_supported) ? true : false; else if (attr == &dev_attr_usb_sleep_charge.attr) exists = (drv->usb_sleep_charge_supported) ? true : false; + else if (attr == &dev_attr_sleep_functions_on_battery.attr) + exists = (drv->usb_sleep_charge_supported) ? true : false; return exists ? attr->mode : 0; } |