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| Filename | Latest commit message | Latest commit date |
|---|---|---|
b5cc169919
The _STA method of the Venue 11 Pro 7130 touchscreen has this ugliness:
Method (_STA, 0, NotSerialized) // _STA: Status
{
If ((SDS1 & One) == One)
{
If (RST1 == Zero)
{
Return (0x0F)
}
ElseIf (RST2 == Zero)
{
RST2 = One
TMRV = Timer
}
Else
{
Local0 = ((Timer - TMRV) / 0x2710)
If (Local0 > TMRI)
{
RST2 = Zero
RST1 = Zero
}
}
}
Else
{
Return (Zero)
}
}
Whereby RST1 gets set by _SB.PCI0.GFX0.LCD.LCD1._ON, this means that
after RST1 has been set first _STA must be called to set TIMER and
then after enough time has elapsed _STA must be called twice more, once
to clear RST1 and once to finally return 0xf before the touchscreen will
show up. Which is just crazy.
This commit adds an always_present_ids entry for the SYNA7500 touchscreen
ACPI node, together with a DMI match for the Venue 11 Pro 7130, fixing the
touchscreen not working on this device.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.