From: Oleksandr Andrushchenko <andr2000@gmail.com>
To: xen-devel@lists.xenproject.org, konrad.wilk@oracle.com
Cc: andr2000@gmail.com,
Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Subject: [PATCH 3/3] xen/displif: Add unique display connector identifier
Date: Wed, 23 May 2018 09:19:23 +0300 [thread overview]
Message-ID: <20180523061923.2036-3-andr2000@gmail.com> (raw)
In-Reply-To: <20180523061923.2036-1-andr2000@gmail.com>
From: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
If frontend is configured to expose multiple connectors then backend may
require a way to uniquely identify concrete virtual connector within the
frontend. This is useful for use-cases where connector needs to be
matched to physical display connector.
Add XenBus "unique-id" node parameter, so this sort of use-cases can
be implemented.
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
---
xen/include/public/io/displif.h | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/xen/include/public/io/displif.h b/xen/include/public/io/displif.h
index 8a94f1f9b9d0..78158f739cf5 100644
--- a/xen/include/public/io/displif.h
+++ b/xen/include/public/io/displif.h
@@ -189,6 +189,13 @@
*
*----------------------------- Connector settings ----------------------------
*
+ * unique-id
+ * Values: <uint32_t>
+ *
+ * After device instance initialization each connector is assigned a
+ * unique ID (within the front driver), so it can be identified by the
+ * backend by this ID.
+ *
* resolution
* Values: <width, uint32_t>x<height, uint32_t>
*
@@ -368,6 +375,7 @@
#define XENDISPL_FIELD_EVT_CHANNEL "evt-event-channel"
#define XENDISPL_FIELD_RESOLUTION "resolution"
#define XENDISPL_FIELD_BE_ALLOC "be-alloc"
+#define XENDISPL_FIELD_UNIQUE_ID "unique-id"
/*
******************************************************************************
--
2.17.0
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next prev parent reply other threads:[~2018-05-23 6:19 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-23 6:19 [PATCH 1/3] xen/kbdif: Move multi-touch device parameters to backend nodes Oleksandr Andrushchenko
2018-05-23 6:19 ` [PATCH 2/3] xen/kbdif: Add unique input device identifier Oleksandr Andrushchenko
2018-06-07 13:28 ` Konrad Rzeszutek Wilk
2018-06-07 13:40 ` Oleksandr Andrushchenko
2018-06-07 15:47 ` Konrad Rzeszutek Wilk
2018-06-08 5:26 ` Oleksandr Andrushchenko
2018-05-23 6:19 ` Oleksandr Andrushchenko [this message]
2018-06-07 13:29 ` [PATCH 3/3] xen/displif: Add unique display connector identifier Konrad Rzeszutek Wilk
2018-06-07 13:41 ` Oleksandr Andrushchenko
2018-06-07 13:29 ` [PATCH 1/3] xen/kbdif: Move multi-touch device parameters to backend nodes Konrad Rzeszutek Wilk
2018-06-07 14:00 ` Juergen Gross
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