From: "Jürgen Groß" <jgross@suse.com>
To: Oleksandr Andrushchenko <andr2000@gmail.com>,
xen-devel@lists.xenproject.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, boris.ostrovsky@oracle.com,
airlied@linux.ie, daniel@ffwll.ch
Cc: intel-gfx@lists.freedesktop.org, sstabellini@kernel.org,
dan.carpenter@oracle.com,
Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Subject: Re: [PATCH 4/6] xen: Sync up with the canonical protocol definition in Xen
Date: Tue, 4 Aug 2020 08:14:06 +0200 [thread overview]
Message-ID: <90b215cb-c878-340e-402a-7739ba17e4a7@suse.com> (raw)
In-Reply-To: <20200731125109.18666-5-andr2000@gmail.com>
On 31.07.20 14:51, Oleksandr Andrushchenko wrote:
> From: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
>
> This is the sync up with the canonical definition of the
> display protocol in Xen.
>
> 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@epam.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Juergen
next prev parent reply other threads:[~2020-08-04 6:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-31 12:51 [PATCH 0/6] Fixes and improvements for Xen pvdrm Oleksandr Andrushchenko
2020-07-31 12:51 ` [PATCH 1/6] xen/gntdev: Fix dmabuf import with non-zero sgt offset Oleksandr Andrushchenko
2020-08-04 6:11 ` Jürgen Groß
2020-08-04 6:34 ` Oleksandr Andrushchenko
2020-07-31 12:51 ` [PATCH 2/6] drm/xen-front: Fix misused IS_ERR_OR_NULL checks Oleksandr Andrushchenko
2020-08-04 6:12 ` Jürgen Groß
2020-08-04 6:35 ` Oleksandr Andrushchenko
2020-08-04 6:39 ` Jürgen Groß
2020-08-06 9:20 ` Dan Carpenter
2020-08-06 9:17 ` Dan Carpenter
2020-07-31 12:51 ` [PATCH 3/6] drm/xen-front: Add YUYV to supported formats Oleksandr Andrushchenko
2020-08-07 9:35 ` Noralf Trønnes
2020-07-31 12:51 ` [PATCH 4/6] xen: Sync up with the canonical protocol definition in Xen Oleksandr Andrushchenko
2020-08-04 6:14 ` Jürgen Groß [this message]
2020-07-31 12:51 ` [PATCH 5/6] drm/xen-front: Pass dumb buffer data offset to the backend Oleksandr Andrushchenko
2020-08-07 9:33 ` Noralf Trønnes
2020-07-31 12:51 ` [PATCH 6/6] drm/xen-front: Add support for EDID based configuration Oleksandr Andrushchenko
2020-08-05 14:35 ` [Intel-gfx] " kernel test robot
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