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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: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
hifive-unleashed-5.1
Azael Avalos 2015-02-10 21:09:18 -07:00 committed by Darren Hart
parent 94477d4cfe
commit bae84195b4
1 changed files with 100 additions and 0 deletions
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100
drivers/platform/x86/toshiba_acpi.c
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@ -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);