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platform/x86: intel-hid: Add alternative method to enable switches 

Some convertible have unreliable VGBS return, in these cases we enable
support when receiving the first event.

Signed-off-by: Elia Devito <eliadevito@gmail.com>
Link: https://lore.kernel.org/r/20201204160234.36832-1-elia@xvalue.it
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Elia Devito 2020-12-04 17:02:35 +01:00 committed by Hans de Goede
parent 537b0dd472
commit ac32bae000
1 changed files with 13 additions and 0 deletions
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13
drivers/platform/x86/intel-hid.c
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@ -435,6 +435,19 @@ static void notify_handler(acpi_handle handle, u32 event, void *context)
struct platform_device *device = context;
struct intel_hid_priv *priv = dev_get_drvdata(&device->dev);
unsigned long long ev_index;
int err;
/*
* Some convertible have unreliable VGBS return which could cause incorrect
* SW_TABLET_MODE report, in these cases we enable support when receiving
* the first event instead of during driver setup.
*/
if (!priv->switches && (event == 0xcc || event == 0xcd)) {
dev_info(&device->dev, "switch event received, enable switches supports\n");
err = intel_hid_switches_setup(device);
if (err)
pr_err("Failed to setup Intel HID switches\n");
}
if (priv->wakeup_mode) {
/*