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vl.c: Remove pxa2xx-specific -portrait and -rotate options

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The ``-portrait`` and ``-rotate`` options were documented as only
working with the PXA LCD device, and all the machine types using
that display device were removed in 9.2.

These options were intended to simulate a mobile device being
rotated by the user, and had three effects:
 * the display output was rotated by 90, 180 or 270 degrees
   (implemented in the PXA display device models)
 * the mouse/trackpad input was rotated the opposite way
   (implemented in generic code)
 * the machine model would signal to the guest about its
   orientation
   (implemented by e.g. the spitz machine model)

Of these three things, the input-rotation was coded without being
restricted to boards which supported the full set of device-rotation
handling, so in theory the options were usable on other machine
models with odd effects (rotating input but not display output).  But
this was never intended or documented behaviour, so we can reasonably
drop these command line arguments without a formal deprecate-and-drop
cycle for them.

Remove the options, and their implementation and documentation.
Describe the removal in removed-features.rst.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20241003140010.1653808-7-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2024-10-14 17:05:57 +01:00
parent 48cbe68670
commit f7214f99ff
6 changed files with 23 additions and 65 deletions
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23
docs/about/removed-features.rst
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@ -532,6 +532,29 @@ security model option, or switch to ``virtiofs``. The virtiofs daemon
``virtiofsd`` uses vhost to eliminate the high latency costs of the 9p
``proxy`` backend.
``-portrait`` and ``-rotate`` (since 9.2)
'''''''''''''''''''''''''''''''''''''''''
The ``-portrait`` and ``-rotate`` options were documented as only
working with the PXA LCD device, and all the machine types using
that display device were removed in 9.2, so these options also
have been dropped.
These options were intended to simulate a mobile device being
rotated by the user, and had three effects:
* the display output was rotated by 90, 180 or 270 degrees
* the mouse/trackpad input was rotated the opposite way
* the machine model would signal to the guest about its
orientation
Of these three things, the input-rotation was coded without being
restricted to boards which supported the full set of device-rotation
handling, so in theory the options were usable on other machine models
to produce an odd effect (rotating input but not display output). But
this was never intended or documented behaviour, so we have dropped
the options along with the machine models they were intended for.
User-mode emulator command line arguments
-----------------------------------------