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Commit bae84195 authored by Azael Avalos's avatar Azael Avalos Committed by Darren Hart
Browse files

toshiba_acpi: Add support for Keyboard functions mode 



Recent Toshiba laptops that come with the new keyboard layout have
the Special Functions (hotkeys) enabled by default, which, in order to
access the F{1-12} keys, you need to press the FN-F{1-12} key to
access such key.

This patch adds support to toggle the Keyboard Functions operation
mode by creating the sysfs entry "kbd_functions_keys", accepting only
two parameters, 0 to set the "Normal Operation" mode and 1 to set the
"Special Functions" mode, however, everytime the mode is toggled, a
restart is needed.

In the "Normal Operation" mode, the F{1-12} keys are as usual and
the hotkeys are accessed via FN-F{1-12}.

In the "Special Functions" mode, the F{1-12} keys trigger the hotkey
and the F{1-12} keys are accessed via FN-F{1-12}.

Signed-off-by: default avatarAzael Avalos <coproscefalo@gmail.com>
Signed-off-by: default avatarDarren Hart <dvhart@linux.intel.com>
parent 94477d4c

drivers/platform/x86/toshiba_acpi.c

+100 −0
Original line number Diff line number Diff line
@@ -127,6 +127,7 @@ MODULE_LICENSE("GPL"); 
#define SCI_KBD_ILLUM_STATUS		0x015c

#define SCI_USB_SLEEP_MUSIC		0x015e

#define SCI_TOUCHPAD			0x050e

#define SCI_KBD_FUNCTION_KEYS		0x0522



/* field definitions */

#define HCI_ACCEL_MASK			0x7fff
@@ -193,6 +194,7 @@ struct toshiba_acpi_dev { 
	unsigned int usb_sleep_charge_supported:1;

	unsigned int usb_rapid_charge_supported:1;

	unsigned int usb_sleep_music_supported:1;

	unsigned int kbd_function_keys_supported:1;

	unsigned int sysfs_created:1;



	struct mutex mutex;
@@ -1005,6 +1007,47 @@ static int toshiba_usb_sleep_music_set(struct toshiba_acpi_dev *dev, u32 state) 
	return 0;

}



/* Keyboard function keys */

static int toshiba_function_keys_get(struct toshiba_acpi_dev *dev, u32 *mode)

{

	u32 result;



	if (!sci_open(dev))

		return -EIO;



	result = sci_read(dev, SCI_KBD_FUNCTION_KEYS, mode);

	sci_close(dev);

	if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {

		pr_err("ACPI call to get KBD function keys failed\n");

		return -EIO;

	} else if (result == TOS_NOT_SUPPORTED) {

		pr_info("KBD function keys not supported\n");

		return -ENODEV;

	}



	return 0;

}



static int toshiba_function_keys_set(struct toshiba_acpi_dev *dev, u32 mode)

{

	u32 result;



	if (!sci_open(dev))

		return -EIO;



	result = sci_write(dev, SCI_KBD_FUNCTION_KEYS, mode);

	sci_close(dev);

	if (result == TOS_FAILURE || result == TOS_INPUT_DATA_ERROR) {

		pr_err("ACPI call to set KBD function keys failed\n");

		return -EIO;

	} else if (result == TOS_NOT_SUPPORTED) {

		pr_info("KBD function keys not supported\n");

		return -ENODEV;

	}



	return 0;

}



/* Bluetooth rfkill handlers */



static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
@@ -1589,6 +1632,12 @@ static ssize_t toshiba_usb_sleep_music_show(struct device *dev, 
static ssize_t toshiba_usb_sleep_music_store(struct device *dev,

					     struct device_attribute *attr,

					     const char *buf, size_t count);

static ssize_t toshiba_kbd_function_keys_show(struct device *dev,

					      struct device_attribute *attr,

					      char *buf);

static ssize_t toshiba_kbd_function_keys_store(struct device *dev,

					       struct device_attribute *attr,

					       const char *buf, size_t count);



static DEVICE_ATTR(version, S_IRUGO, toshiba_version_show, NULL);

static DEVICE_ATTR(fan, S_IRUGO | S_IWUSR,
@@ -1615,6 +1664,9 @@ static DEVICE_ATTR(usb_rapid_charge, S_IRUGO | S_IWUSR, 
static DEVICE_ATTR(usb_sleep_music, S_IRUGO | S_IWUSR,

		   toshiba_usb_sleep_music_show,

		   toshiba_usb_sleep_music_store);

static DEVICE_ATTR(kbd_function_keys, S_IRUGO | S_IWUSR,

		   toshiba_kbd_function_keys_show,

		   toshiba_kbd_function_keys_store);



static struct attribute *toshiba_attributes[] = {

	&dev_attr_version.attr,
@@ -1629,6 +1681,7 @@ static struct attribute *toshiba_attributes[] = { 
	&dev_attr_sleep_functions_on_battery.attr,

	&dev_attr_usb_rapid_charge.attr,

	&dev_attr_usb_sleep_music.attr,

	&dev_attr_kbd_function_keys.attr,

	NULL,

};
@@ -2074,6 +2127,48 @@ static ssize_t toshiba_usb_sleep_music_store(struct device *dev, 
	return count;

}



static ssize_t toshiba_kbd_function_keys_show(struct device *dev,

					      struct device_attribute *attr,

					      char *buf)

{

	struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);

	int mode;

	int ret;



	ret = toshiba_function_keys_get(toshiba, &mode);

	if (ret < 0)

		return ret;



	return sprintf(buf, "%d\n", mode);

}



static ssize_t toshiba_kbd_function_keys_store(struct device *dev,

					       struct device_attribute *attr,

					       const char *buf, size_t count)

{

	struct toshiba_acpi_dev *toshiba = dev_get_drvdata(dev);

	int mode;

	int ret;



	ret = kstrtoint(buf, 0, &mode);

	if (ret)

		return ret;

	/* Check for the function keys mode where:

	 * 0 - Normal operation (F{1-12} as usual and hotkeys via FN-F{1-12})

	 * 1 - Special functions (Opposite of the above setting)

	 */

	if (mode != 0 && mode != 1)

		return -EINVAL;



	ret = toshiba_function_keys_set(toshiba, mode);

	if (ret)

		return ret;



	pr_info("Reboot for changes to KBD Function Keys to take effect");



	return count;

}



static umode_t toshiba_sysfs_is_visible(struct kobject *kobj,

					struct attribute *attr, int idx)

{
@@ -2099,6 +2194,8 @@ static umode_t toshiba_sysfs_is_visible(struct kobject *kobj, 
		exists = (drv->usb_rapid_charge_supported) ? true : false;

	else if (attr == &dev_attr_usb_sleep_music.attr)

		exists = (drv->usb_sleep_music_supported) ? true : false;

	else if (attr == &dev_attr_kbd_function_keys.attr)

		exists = (drv->kbd_function_keys_supported) ? true : false;



	return exists ? attr->mode : 0;

}
@@ -2517,6 +2614,9 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev) 
	ret = toshiba_usb_sleep_music_get(dev, &dummy);

	dev->usb_sleep_music_supported = !ret;



	ret = toshiba_function_keys_get(dev, &dummy);

	dev->kbd_function_keys_supported = !ret;



	/* Determine whether or not BIOS supports fan and video interfaces */



	ret = get_video_status(dev, &dummy);