On Thu, Jan 18, 2018 at 3:59 PM, Marco Martin <notmart@xxxxxxxxx> wrote:
> 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
Yeah, to me sounds like a hack for now.
So, I would like to hear from everyone: Pali, Mario, Darren?
> 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
>
--
With Best Regards,
Andy Shevchenko
