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SubjectRe: [PATCH 1/5] drm/i915/gsc: add gsc as a mei platform device
On Wed, Dec 15, 2021 at 03:56:18PM +0200, Alexander Usyskin wrote:
> From: Tomas Winkler <>
> GSC is a graphics system controller, based on CSE, it provides
> a chassis controller for graphics discrete cards, as well as it
> supports media protection (HDCP 2.2) on selected devices.
> There are two MEI interfaces in GSC HECI1, the one that provides media
> protection and HECI2 the one that provides firmware interface.
> Both interfaces are on the BAR0 at offsets 0x00258000 and 0x00259000.
> GSC is a GT Engine (class 4: instance 6). HECI1 interrupt is signaled
> via bit 15 and HECI2 via bit 14 in the interrupt register.
> This patch exports GSC as platform device for mei driver to bind to.

This is NOT a platform device. It is part of a PCI device, which is NOT
a platform device. I keep having to say this.

Please use the auxbus interface instead if you want to split a PCI
device up into sub-child-devices and bind drivers to them. That is what
it was created for, and this SHOULD have been caught by the other Intel
reviewers who signed-off on this patch.

so no, I will not ack this, it is not ok at all, sorry.

greg k-h

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