diff options
| author | Gwendal Grignou <gwendal@chromium.org> | 2024-03-29 17:32:06 +0300 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-04-08 18:30:40 +0300 |
| commit | 434e5781d8cd2d0ed512d920c6cdeba4b33a2e81 (patch) | |
| tree | bd3940a88fec152e910f7ebc05f0abc5bfcf099f /drivers/platform/x86/intel/vbtn.c | |
| parent | 868adf8a29179c00309ddd8ffe0afa2043f42cb5 (diff) | |
| download | linux-434e5781d8cd2d0ed512d920c6cdeba4b33a2e81.tar.xz | |
platform/x86: intel-vbtn: Update tablet mode switch at end of probe
ACER Vivobook Flip (TP401NAS) virtual intel switch is implemented as
follow:
Device (VGBI)
{
Name (_HID, EisaId ("INT33D6") ...
Name (VBDS, Zero)
Method (_STA, 0, Serialized) // _STA: Status ...
Method (VBDL, 0, Serialized)
{
PB1E |= 0x20
VBDS |= 0x40
}
Method (VGBS, 0, Serialized)
{
Return (VBDS) /* \_SB_.PCI0.SBRG.EC0_.VGBI.VBDS */
}
...
}
By default VBDS is set to 0. At boot it is set to clamshell (bit 6 set)
only after method VBDL is executed.
Since VBDL is now evaluated in the probe routine later, after the device
is registered, the retrieved value of VBDS was still 0 ("tablet mode")
when setting up the virtual switch.
Make sure to evaluate VGBS after VBDL, to ensure the
convertible boots in clamshell mode, the expected default.
Fixes: 26173179fae1 ("platform/x86: intel-vbtn: Eval VBDL after registering our notifier")
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20240329143206.2977734-3-gwendal@chromium.org
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86/intel/vbtn.c')
| -rw-r--r-- | drivers/platform/x86/intel/vbtn.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/platform/x86/intel/vbtn.c b/drivers/platform/x86/intel/vbtn.c index 48f0ac19d6dd..79bb2c801daa 100644 --- a/drivers/platform/x86/intel/vbtn.c +++ b/drivers/platform/x86/intel/vbtn.c @@ -136,8 +136,6 @@ static int intel_vbtn_input_setup(struct platform_device *device) priv->switches_dev->id.bustype = BUS_HOST; if (priv->has_switches) { - detect_tablet_mode(&device->dev); - ret = input_register_device(priv->switches_dev); if (ret) return ret; @@ -312,6 +310,9 @@ static int intel_vbtn_probe(struct platform_device *device) if (ACPI_FAILURE(status)) dev_err(&device->dev, "Error VBDL failed with ACPI status %d\n", status); } + // Check switches after buttons since VBDL may have side effects. + if (has_switches) + detect_tablet_mode(&device->dev); device_init_wakeup(&device->dev, true); /* |