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Subject[PATCH resend 2/6] toshiba_acpi: Add fan entry to sysfs
Date
This patch adds a fan entry to sysfs, enabling the user to get and
set the fan status.

Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
---
drivers/platform/x86/toshiba_acpi.c | 51 ++++++++++++++++++++++++++++++++++++-
1 file changed, 50 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
index 334b65e..413af60 100644
--- a/drivers/platform/x86/toshiba_acpi.c
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -1516,6 +1516,11 @@ static const struct backlight_ops toshiba_backlight_data = {
*/
static ssize_t toshiba_version_show(struct device *dev,
struct device_attribute *attr, char *buf);
+static ssize_t toshiba_fan_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count);
+static ssize_t toshiba_fan_show(struct device *dev,
+ struct device_attribute *attr, char *buf);
static ssize_t toshiba_kbd_bl_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count);
@@ -1569,6 +1574,8 @@ static ssize_t toshiba_usb_sleep_music_store(struct device *dev,
const char *buf, size_t count);

static DEVICE_ATTR(version, S_IRUGO, toshiba_version_show, NULL);
+static DEVICE_ATTR(fan, S_IRUGO | S_IWUSR,
+ toshiba_fan_show, toshiba_fan_store);
static DEVICE_ATTR(kbd_backlight_mode, S_IRUGO | S_IWUSR,
toshiba_kbd_bl_mode_show, toshiba_kbd_bl_mode_store);
static DEVICE_ATTR(kbd_type, S_IRUGO, toshiba_kbd_type_show, NULL);
@@ -1594,6 +1601,7 @@ static DEVICE_ATTR(usb_sleep_music, S_IRUGO | S_IWUSR,

static struct attribute *toshiba_attributes[] = {
&dev_attr_version.attr,
+ &dev_attr_fan.attr,
&dev_attr_kbd_backlight_mode.attr,
&dev_attr_kbd_type.attr,
&dev_attr_available_kbd_modes.attr,
@@ -1621,6 +1629,45 @@ static ssize_t toshiba_version_show(struct device *dev,
return sprintf(buf, "%s\n", TOSHIBA_ACPI_VERSION);
}

+static ssize_t toshiba_fan_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 result;
+ int state;
+ int ret;
+
+ ret = kstrtoint(buf, 0, &state);
+ if (ret)
+ return ret;
+
+ if (state != 0 && state != 1)
+ return -EINVAL;
+
+ result = hci_write1(toshiba, HCI_FAN, state);
+ if (result == TOS_FAILURE)
+ return -EIO;
+ else if (result == TOS_NOT_SUPPORTED)
+ return -ENODEV;
+
+ return count;
+}
+
+static ssize_t toshiba_fan_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);
+ u32 value;
+ int ret;
+
+ ret = get_fan_status(toshiba, &value);
+ if (ret)
+ return ret;
+
+ return sprintf(buf, "%d\n", value);
+}
+
static ssize_t toshiba_kbd_bl_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -2017,7 +2064,9 @@ static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,
struct toshiba_acpi_dev *drv = dev_get_drvdata(dev);
bool exists = true;

- if (attr == &dev_attr_kbd_backlight_mode.attr)
+ if (attr == &dev_attr_fan.attr)
+ exists = (drv->fan_supported) ? true : false;
+ else if (attr == &dev_attr_kbd_backlight_mode.attr)
exists = (drv->kbd_illum_supported) ? true : false;
else if (attr == &dev_attr_kbd_backlight_timeout.attr)
exists = (drv->kbd_mode == SCI_KBD_MODE_AUTO) ? true : false;
--
2.2.2


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