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Re: [PATCH v2] xen/displif: Protocol version 2

  • To: Jürgen Groß <jgross@xxxxxxxx>, Oleksandr Andrushchenko <andr2000@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, "ian.jackson@xxxxxxxxxxxxx" <ian.jackson@xxxxxxxxxxxxx>, "wl@xxxxxxx" <wl@xxxxxxx>
  • From: Oleksandr Andrushchenko <Oleksandr_Andrushchenko@xxxxxxxx>
  • Date: Wed, 1 Jul 2020 12:07:46 +0000
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  • Delivery-date: Wed, 01 Jul 2020 12:08:05 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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  • Thread-topic: [PATCH v2] xen/displif: Protocol version 2

On 7/1/20 1:46 PM, Jürgen Groß wrote:
> On 01.07.20 09:19, Oleksandr Andrushchenko wrote:
>> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
>> 1. Add protocol version as an integer
>> Version string, which is in fact an integer, is hard to handle in the
>> code that supports different protocol versions. To simplify that
>> also add the version as an integer.
>> 2. Pass buffer offset with XENDISPL_OP_DBUF_CREATE
>> There are cases when display data buffer is created with non-zero
>> offset to the data start. Handle such cases and provide that offset
>> while creating a display buffer.
>> 3. Add XENDISPL_OP_GET_EDID command
>> Add an optional request for reading Extended Display Identification
>> Data (EDID) structure which allows better configuration of the
>> display connectors over the configuration set in XenStore.
>> With this change connectors may have multiple resolutions defined
>> with respect to detailed timing definitions and additional properties
>> normally provided by displays.
>> If this request is not supported by the backend then visible area
>> is defined by the relevant XenStore's "resolution" property.
>> If backend provides extended display identification data (EDID) with
>> XENDISPL_OP_GET_EDID request then EDID values must take precedence
>> over the resolutions defined in XenStore.
>> 4. Bump protocol version to 2.
>> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@xxxxxxxx>
> Reviewed-by: Juergen Gross <jgross@xxxxxxxx>

Thank you, do you want me to prepare the same for the kernel so

you have it at hand when the time comes?

> Juergen



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