toshiba_acpi: Add sysfs entries for the Cooling Method feature

This patch adds the sysfs entry

Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index c6f92ec..5ace1e0 100644 (file)
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -2289,6 +2289,54 @@ static ssize_t usb_three_store(struct device *dev,
 }
 static DEVICE_ATTR_RW(usb_three);
 
+static ssize_t cooling_method_show(struct device *dev,
+                                  struct device_attribute *attr, char *buf)
+{
+       struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+       int state;
+       int ret;
+
+       ret = toshiba_cooling_method_get(toshiba, &state);
+       if (ret < 0)
+               return ret;
+
+       return sprintf(buf, "%d %d\n", state, toshiba->max_cooling_method);
+}
+
+static ssize_t cooling_method_store(struct device *dev,
+                                   struct device_attribute *attr,
+                                   const char *buf, size_t count)
+{
+       struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+       int state;
+       int ret;
+
+       ret = kstrtoint(buf, 0, &state);
+       if (ret)
+               return ret;
+
+       /*
+        * Check for supported values
+        * Depending on the laptop model, some only support these two:
+        * 0 - Maximum Performance
+        * 1 - Battery Optimized
+        *
+        * While some others support all three methods:
+        * 0 - Maximum Performance
+        * 1 - Performance
+        * 2 - Battery Optimized
+        */
+       if (state < 0 || state > toshiba->max_cooling_method)
+               return -EINVAL;
+
+       ret = toshiba_cooling_method_set(toshiba, state);
+       if (ret)
+               return ret;
+
+       return count;
+}
+static DEVICE_ATTR_RW(cooling_method);
+
 static struct attribute *toshiba_attributes[] = {
        &dev_attr_version.attr,
        &dev_attr_fan.attr,
@@ -2305,6 +2353,7 @@ static struct attribute *toshiba_attributes[] = {
        &dev_attr_kbd_function_keys.attr,
        &dev_attr_panel_power_on.attr,
        &dev_attr_usb_three.attr,
+       &dev_attr_cooling_method.attr,
        NULL,
 };
 
@@ -2339,6 +2388,8 @@ static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
                exists = (drv->panel_power_on_supported) ? true : false;
        else if (attr == &dev_attr_usb_three.attr)
                exists = (drv->usb_three_supported) ? true : false;
+       else if (attr == &dev_attr_cooling_method.attr)
+               exists = (drv->cooling_method_supported) ? true : false;
 
        return exists ? attr->mode : 0;
 }