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From: Hans Verkuil <hverkuil@xs4all.nl>
To: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
	Clint Taylor <clinton.a.taylor@intel.com>,
	Jani Nikula <jani.nikula@intel.com>,
	Daniel Vetter <daniel@ffwll.ch>,
	Hans Verkuil <hans.verkuil@cisco.com>
Subject: [RFC PATCH 2/7] cec-ioc-adap-g-caps.rst: document CEC_CAP_NEEDS_HPD
Date: Thu, 25 May 2017 17:06:21 +0200	[thread overview]
Message-ID: <20170525150626.29748-3-hverkuil@xs4all.nl> (raw)
In-Reply-To: <20170525150626.29748-1-hverkuil@xs4all.nl>

From: Hans Verkuil <hans.verkuil@cisco.com>

Document the new CEC_CAP_NEEDS_HPD capability.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
---
 Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst b/Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst
index a0e961f11017..6d7bf7bef3eb 100644
--- a/Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst
+++ b/Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst
@@ -113,6 +113,14 @@ returns the information to the application. The ioctl never fails.
       - 0x00000020
       - The CEC hardware can monitor all messages, not just directed and
 	broadcast messages.
+    * .. _`CEC-CAP-NEEDS-HPD`:
+
+      - ``CEC_CAP_NEEDS_HPD``
+      - 0x00000040
+      - The CEC hardware is only active if the HDMI Hotplug Detect pin is
+        high. This makes it impossible to use CEC to wake up displays that
+	set the HPD pin low when in standby mode, but keep the CEC bus
+	alive.
 
 
 
-- 
2.11.0

  parent reply	other threads:[~2017-05-25 15:06 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-25 15:06 [RFC PATCH 0/7] drm/i915: add support for DisplayPort CEC-Tunneling-over-AUX Hans Verkuil
2017-05-25 15:06 ` [RFC PATCH 1/7] cec: add CEC_CAP_NEEDS_HPD Hans Verkuil
2017-05-25 15:06 ` Hans Verkuil [this message]
2017-05-25 15:06 ` [RFC PATCH 3/7] cec: add cec_s_phys_addr_from_edid helper function Hans Verkuil
2017-05-25 15:06 ` [RFC PATCH 4/7] cec: add cec_phys_addr_invalidate() " Hans Verkuil
2017-05-25 15:06 ` [RFC PATCH 5/7] drm/cec: Add CEC over Aux register definitions Hans Verkuil
2017-05-25 15:06   ` Hans Verkuil
2017-05-26  8:39   ` Jani Nikula
2017-05-26  8:39     ` Jani Nikula
2017-05-25 15:06 ` [RFC PATCH 6/7] drm: add support for DisplayPort CEC-Tunneling-over-AUX Hans Verkuil
2017-05-25 15:06   ` Hans Verkuil
2017-05-26  7:18   ` Daniel Vetter
2017-05-26  7:18     ` Daniel Vetter
2017-05-26 10:34     ` Hans Verkuil
2017-05-26 10:34       ` Hans Verkuil
2017-05-26 11:33       ` Daniel Vetter
2017-05-26 11:33         ` Daniel Vetter
2017-05-30 23:57     ` Clint Taylor
2017-05-31  6:40       ` Hans Verkuil
2017-05-25 15:06 ` [RFC PATCH 7/7] drm/i915: add DisplayPort CEC-Tunneling-over-AUX support Hans Verkuil
2017-05-25 15:06   ` Hans Verkuil
2017-05-26  7:15   ` Daniel Vetter
2017-05-26 10:20     ` Hans Verkuil
2017-05-26 10:20       ` Hans Verkuil
2017-05-29 19:00       ` Daniel Vetter
2017-05-30  7:02         ` Hans Verkuil
2017-05-30  7:02           ` Hans Verkuil
2017-05-30  7:11           ` Jani Nikula
2017-05-30 14:19             ` Clint Taylor
2017-05-30 16:49               ` Hans Verkuil
2017-05-30 16:54                 ` Hans Verkuil
2017-05-30 20:32                   ` Clint Taylor
2017-05-30 20:32                     ` Clint Taylor
2017-05-30 21:29                     ` Hans Verkuil
2017-05-30 23:25                       ` Clint Taylor
2017-05-30 23:25                         ` Clint Taylor
2017-05-31  6:37                         ` Hans Verkuil
2017-05-30 20:31                 ` Clint Taylor
2017-05-30 20:31                   ` Clint Taylor
2017-05-26 10:13   ` Jani Nikula
2017-05-26 10:13     ` Jani Nikula
2017-05-26 10:13     ` Hans Verkuil
2017-05-26 10:13       ` Hans Verkuil
2017-05-25 15:30 ` [RFC PATCH 0/7] drm/i915: add support for DisplayPort CEC-Tunneling-over-AUX Mike Lothian
2017-05-25 15:56   ` Hans Verkuil
2017-05-25 15:34 ` ✓ Fi.CI.BAT: success for " Patchwork

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