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Re: [Qemu-devel] [PATCH v2 0/2] hw/usb/dev-hid: Make usb-tablet work wit

From: Gabriel L. Somlo
Subject: Re: [Qemu-devel] [PATCH v2 0/2] hw/usb/dev-hid: Make usb-tablet work with OS X/macOS guests
Date: Fri, 20 Jan 2017 20:49:01 -0500
User-agent: Mutt/1.7.1 (2016-10-04)

On Fri, Jan 20, 2017 at 13:30:15 +0100, address@hidden wrote:
> This series makes the Qemu usb-tablet work correctly with OS X/macOS guests 
> without the need for a special guest driver.
>  * The usb-tablet should not have a boot protocol of 2. Other OSes seem to 
> ignore this, but the IOHIDFamily driver stack chokes on it for anything but 
> conventional (relative motion) mice.
>  * A "mac_compat" boolean option is added to the usb-tablet, which changes 
> its report descriptor to specify a usage of 0x02 (mouse) instead of 0x01 
> (pointer). This is required for correct operation in the Mac HID driver stack.

works like a charm on Sierra (10.12.1). Also tried it with
Fedora-Workstation-Live-x86_64-25-1.3.iso, where it behaves
identically with or without the mac_compat option. All tests
used qemu in SDL/X11-client mode.

Tested-by: Gabriel Somlo <address@hidden>


> Changelog
> =========
> v1 -> v2:
>  * v1 Thread was "[PATCH] hw/usb/dev-hid: add a Mac guest compatibility 
> option to usb-tablet"
>  * Always apply the boot protocol (bInterfaceProtocol) change to usb-tablet, 
> not just when the Mac compatibility option is active. The original value of 
> 0x02 was determined to be incorrect according to the spec anyway.
>  * As the boot protocol change is permanent, separate interface and device 
> descriptor constants for the Mac/non-Mac variants of the tablet are no longer 
> required, and have been removed.
> Phil Dennis-Jordan (2):
>   hw/usb/dev-hid: set bInterfaceProtocol to 0x00 for usb-tablet
>   hw/usb/dev-hid: add a usb-tablet Mac guest compatibility option
>  hw/usb/dev-hid.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)

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