From: vladimir_zapolskiy@mentor•com (Vladimir Zapolskiy)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] drm: bridge/dw_hdmi: add dw hdmi i2c bus adapter support
Date: Mon, 28 Sep 2015 23:08:17 +0300 [thread overview]
Message-ID: <56099E31.6050908@mentor.com> (raw)
In-Reply-To: <1443470762-17937-1-git-send-email-vladimir_zapolskiy@mentor.com>
On 28.09.2015 23:06, Vladimir Zapolskiy wrote:
> The change adds support of internal HDMI I2C master controller, this
> subdevice is used by default, if "ddc-i2c-bus" DT property is omitted.
>
> The main purpose of this functionality is to support reading EDID from
> an HDMI monitor on boards, which don't have an I2C bus connected to
> DDC pins.
>
> The current implementation does not support "I2C Master Interface
> Extended Read Mode" to read data addressed by non-zero segment
> pointer, this means that if EDID has more than 1 extension blocks,
> EDID reading operation won't succeed, in my practice all tested HDMI
> monitors have at maximum one extension block.
>
> Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor•com>
> ---
> .../devicetree/bindings/drm/bridge/dw_hdmi.txt | 4 +-
> drivers/gpu/drm/bridge/dw_hdmi.c | 263 ++++++++++++++++++++-
> drivers/gpu/drm/bridge/dw_hdmi.h | 19 ++
> 3 files changed, 279 insertions(+), 7 deletions(-)
>
This change is the same as one in reply, but no changelog/version info
(sent by mistake two copies, sorry for confusion).
--
With best wishes,
Vladimir
prev parent reply other threads:[~2015-09-28 20:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-28 20:06 [PATCH] drm: bridge/dw_hdmi: add dw hdmi i2c bus adapter support Vladimir Zapolskiy
2015-09-28 20:06 ` [PATCH v5] " Vladimir Zapolskiy
2015-09-28 20:08 ` Vladimir Zapolskiy [this message]
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