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authorHans de Goede <hdegoede@redhat.com>2018-08-27 09:45:44 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-11-21 09:27:32 +0100
commitc55954e7e0b8fb84e3250a44d7431334555636a4 (patch)
treef637087a07f74532af46d806fbc9f28dda67d3e1 /ipc
parent0524e92e0f8240866e9f3d79d10d335175c6bb59 (diff)
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ACPI / LPSS: Add alternative ACPI HIDs for Cherry Trail DMA controllers
[ Upstream commit 240714061c58e6b1abfb3322398a7634151c06cb ] Bay and Cherry Trail DSTDs represent a different set of devices depending on which OS the device think it is booting. One set of decices for Windows and another set of devices for Android which targets the Android-x86 Linux kernel fork (which e.g. used to have its own display driver instead of using the i915 driver). Which set of devices we are actually going to get is out of our control, this is controlled by the ACPI OSID variable, which gets either set through an EFI setup option, or sometimes is autodetected. So we need to support both. This commit adds support for the 80862286 and 808622C0 ACPI HIDs which we get for the first resp. second DMA controller on Cherry Trail devices when OSID is set to Android. 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> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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