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platform/x86: toshiba: re-enable acpi hotkeys after suspend to disk

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On the Toshiba Tecra Z40, after a suspend-to-disk, some FN hotkeys
driven by toshiba_acpi are not functional.

Calling the ACPI object ENAB on resume makes them back alive.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Benjamin Tissoires 2014-09-02 14:04:19 -04:00 • committed by Darren Hart
parent b3d94d7011
commit e7fdb762b9
1 changed files with 8 additions and 1 deletions
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9
drivers/platform/x86/toshiba_acpi.c
View file

@ -1857,9 +1857,16 @@ static int toshiba_acpi_resume(struct device *device)
{ {
struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device)); struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
u32 result; u32 result;
acpi_status status;
if (dev->hotkey_dev) {
status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB",
NULL, NULL);
if (ACPI_FAILURE(status))
pr_info("Unable to re-enable hotkeys\n");
if (dev->hotkey_dev)
hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result); hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
}
return 0; return 0;
} }