From: "Heiko Stübner" <heiko@sntech.de>
To: Douglas Anderson <dianders@chromium.org>
Cc: linux-rockchip@lists.infradead.org,
David Airlie <airlied@linux.ie>,
Neil Armstrong <narmstrong@baylibre.com>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
mka@chromium.org, Sean Paul <seanpaul@chromium.org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 2/2] drm/rockchip: dw_hdmi: Handle suspend/resume
Date: Wed, 15 May 2019 22:04:34 +0200 [thread overview]
Message-ID: <16767939.RRcxLiLXmc@diego> (raw)
In-Reply-To: <20190502223808.185180-2-dianders@chromium.org>
Am Freitag, 3. Mai 2019, 00:38:08 CEST schrieb Douglas Anderson:
> On Rockchip rk3288-based Chromebooks when you do a suspend/resume
> cycle:
>
> 1. You lose the ability to detect an HDMI device being plugged in.
>
> 2. If you're using the i2c bus built in to dw_hdmi then it stops
> working.
>
> Let's call the core dw-hdmi's suspend/resume functions to restore
> things.
>
> NOTE: in downstream Chrome OS (based on kernel 3.14) we used the
> "late/early" versions of suspend/resume because we found that the VOP
> was sometimes resuming before dw_hdmi and then calling into us before
> we were fully resumed. For now I have gone back to the normal
> suspend/resume because I can't reproduce the problems.
>
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
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next prev parent reply other threads:[~2019-05-15 20:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-02 22:38 [PATCH 1/2] drm: bridge: dw-hdmi: Add hooks for suspend/resume Douglas Anderson
2019-05-02 22:38 ` [PATCH 2/2] drm/rockchip: dw_hdmi: Handle suspend/resume Douglas Anderson
2019-05-15 20:04 ` Heiko Stübner [this message]
2019-05-16 10:14 ` Laurent Pinchart
2019-05-15 16:22 ` [PATCH 1/2] drm: bridge: dw-hdmi: Add hooks for suspend/resume Doug Anderson
2019-05-15 17:58 ` Sean Paul
2019-05-15 18:01 ` Doug Anderson
2019-05-15 18:05 ` Sean Paul
2019-05-15 20:03 ` Heiko Stübner
2019-05-16 10:18 ` Laurent Pinchart
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