Dell laptops send events to intel-vbtn.c
0xCC when the laptop enters in tablet mode and
0xCD when the laptop goes out of it
This has been confirmed working on a Dell Inspiron 13-7352
and an Inspiron 13-7000
I'm not sure intel-vbtn is the right place for it, as it
should be dell-specific, but this is the only device driver
where those events arrive at all
also, it would need a way to query the initial state of the switch
CC:platform-driver-x86@xxxxxxxxxxxxxxx
CC:Matthew Garrett <mjg59@xxxxxxxxxxxxx>
CC:"Pali Rohár" <pali.rohar@xxxxxxxxx>
CC:Darren Hart <dvhart@xxxxxxxxxxxxx>
CC:Andy Shevchenko <andy@xxxxxxxxxxxxx>
Signed-off-by: Marco Martin <notmart@xxxxxxxxx>
---
drivers/platform/x86/intel-vbtn.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/intel-vbtn.c b/drivers/platform/x86/intel-vbtn.c
index 146d02f..1fa63e8 100644
--- a/drivers/platform/x86/intel-vbtn.c
+++ b/drivers/platform/x86/intel-vbtn.c
@@ -61,6 +61,10 @@ static int intel_vbtn_input_setup(struct platform_device *device)
priv->input_dev->name = "Intel Virtual Button driver";
priv->input_dev->id.bustype = BUS_HOST;
+ input_set_capability(priv->input_dev, EV_SW, SW_TABLET_MODE);
+ /*TODO: query initial state (and if the switch is present*/
+ input_report_switch(priv->input_dev, SW_TABLET_MODE, 0);
+
ret = input_register_device(priv->input_dev);
if (ret)
goto err_free_device;
@@ -84,7 +88,13 @@ static void notify_handler(acpi_handle handle, u32 event, void *context)
struct platform_device *device = context;
struct intel_vbtn_priv *priv = dev_get_drvdata(&device->dev);
- if (!sparse_keymap_report_event(priv->input_dev, event, 1, true))
+ if (event == 0xCC) {
+ input_report_switch(priv->input_dev, SW_TABLET_MODE, 1);
+ input_sync(priv->input_dev);
+ } else if (event == 0xCD) {
+ input_report_switch(priv->input_dev, SW_TABLET_MODE, 0);
+ input_sync(priv->input_dev);
+ } else if (!sparse_keymap_report_event(priv->input_dev, event, 1, true))
dev_info(&device->dev, "unknown event index 0x%x\n",
event);
}
--
2.7.4
