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toshiba_acpi: Fix the enabling of the Special Functions

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Some Toshiba laptops with the "Special Functions" feature enabled
fail to properly enable such feature unless a specific value is
used to enable the hotkey events.

This patch adds a new function called "*_enable_special_functions",
that simply makes a call to the HCI_HOTKEY_EVENT call, but this time
we are using a different parameter to make the "Special Functions"
mode work as expected.

Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Azael Avalos
2015-03-20 16:55:18 -06:00
committed by Darren Hart
parent a2b3471b5b
commit fb42d1f491
1 changed files with 24 additions and 1 deletions
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25
drivers/platform/x86/toshiba_acpi.c
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@ -129,6 +129,7 @@ MODULE_LICENSE("GPL");
#define HCI_ACCEL_MASK 0x7fff
#define HCI_HOTKEY_DISABLE 0x0b
#define HCI_HOTKEY_ENABLE 0x09
#define HCI_HOTKEY_SPECIAL_FUNCTIONS 0x10
#define HCI_LCD_BRIGHTNESS_BITS 3
#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
@ -2335,6 +2336,20 @@ static int toshiba_acpi_enable_hotkeys(struct toshiba_acpi_dev *dev)
return 0;
}
static void toshiba_acpi_enable_special_functions(struct toshiba_acpi_dev *dev)
{
u32 result;
/*
* Re-activate the hotkeys, but this time, we are using the
* "Special Functions" mode.
*/
result = hci_write1(dev, HCI_HOTKEY_EVENT,
HCI_HOTKEY_SPECIAL_FUNCTIONS);
if (result != TOS_SUCCESS)
pr_err("Could not enable the Special Function mode\n");
}
static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
struct serio *port)
{
@ -2638,6 +2653,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
{
struct toshiba_acpi_dev *dev;
const char *hci_method;
u32 special_functions;
u32 dummy;
bool bt_present;
int ret = 0;
@ -2669,7 +2685,7 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
* with the new keyboard layout, query for its presence to help
* determine the keymap layout to use.
*/
ret = toshiba_function_keys_get(dev, &dummy);
ret = toshiba_function_keys_get(dev, &special_functions);
dev->kbd_function_keys_supported = !ret;
if (toshiba_acpi_setup_keyboard(dev))
@ -2761,6 +2777,13 @@ static int toshiba_acpi_add(struct acpi_device *acpi_dev)
ret = get_fan_status(dev, &dummy);
dev->fan_supported = !ret;
/*
* Enable the "Special Functions" mode only if they are
* supported and if they are activated.
*/
if (dev->kbd_function_keys_supported && special_functions)
toshiba_acpi_enable_special_functions(dev);
ret = sysfs_create_group(&dev->acpi_dev->dev.kobj,
&toshiba_attr_group);
if (ret) {