From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Douglas Anderson <dianders@chromium.org>
Cc: Andrzej Hajda <a.hajda@samsung.com>,
Neil Armstrong <narmstrong@baylibre.com>,
Jonas Karlman <jonas@kwiboo.se>,
Jernej Skrabec <jernej.skrabec@siol.net>,
Sam Ravnborg <sam@ravnborg.org>,
Linus W <linus.walleij@linaro.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
robdclark@chromium.org, Stephen Boyd <swboyd@chromium.org>,
Steev Klimaszewski <steev@kali.org>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
linux-arm-msm@vger.kernel.org,
Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>,
Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@linux.ie>,
Robert Foss <robert.foss@linaro.org>,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 11/12] drm/bridge: ti-sn65dsi86: Print an error if we fallback to panel modes
Date: Mon, 5 Apr 2021 04:04:49 +0300 [thread overview]
Message-ID: <YGpiMQkJbvdO6obJ@pendragon.ideasonboard.com> (raw)
In-Reply-To: <20210402152701.v3.11.Ib4183a04e8698f60b67558f363fddbbaf33dd445@changeid>
Hi Doug,
Thank you for the patch.
On Fri, Apr 02, 2021 at 03:28:45PM -0700, Douglas Anderson wrote:
> Now that we can properly read the EDID for modes there should be no
> reason to fallback to the fixed modes that our downstream panel driver
> provides us. Let's make that clear by:
> - Putting an error message in the logs if we fall back.
> - Putting a comment in saying what's going on.
>
> Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
>
> (no changes since v1)
>
> drivers/gpu/drm/bridge/ti-sn65dsi86.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> index fb50f9f95b0f..3b61898cf9cb 100644
> --- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> +++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
> @@ -303,6 +303,13 @@ static int ti_sn_bridge_connector_get_modes(struct drm_connector *connector)
> return num;
> }
>
> + /*
> + * Ideally this should never happen and we could remove the fallback
> + * but let's preserve old behavior.
> + */
> + DRM_DEV_ERROR(pdata->dev,
> + "Failed to read EDID; falling back to panel modes");
> +
> exit:
> return drm_panel_get_modes(pdata->panel, connector);
> }
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2021-04-05 1:05 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-02 22:28 [PATCH v3 00/12] drm: Fix EDID reading on ti-sn65dsi86 Douglas Anderson
2021-04-02 22:28 ` [PATCH v3 01/12] drm/bridge: Fix the stop condition of drm_bridge_chain_pre_enable() Douglas Anderson
2021-04-05 0:49 ` Laurent Pinchart
2021-04-15 1:19 ` Doug Anderson
2021-04-15 1:56 ` Laurent Pinchart
2021-04-15 14:48 ` Doug Anderson
2021-04-02 22:28 ` [PATCH v3 02/12] drm/bridge: ti-sn65dsi86: Simplify refclk handling Douglas Anderson
2021-04-02 22:28 ` [PATCH v3 03/12] drm/bridge: ti-sn65dsi86: Remove incorrectly tagged kerneldoc comment Douglas Anderson
2021-04-05 0:50 ` Laurent Pinchart
2021-04-02 22:28 ` [PATCH v3 04/12] drm/bridge: ti-sn65dsi86: Reorder remove() Douglas Anderson
2021-04-05 0:52 ` Laurent Pinchart
2021-04-02 22:28 ` [PATCH v3 05/12] drm/bridge: ti-sn65dsi86: Move drm_panel_unprepare() to post_disable() Douglas Anderson
2021-04-05 0:58 ` Laurent Pinchart
2021-04-02 22:28 ` [PATCH v3 06/12] drm/bridge: ti-sn65dsi86: Get rid of the useless detect() function Douglas Anderson
2021-04-05 0:58 ` Laurent Pinchart
2021-04-02 22:28 ` [PATCH v3 07/12] drm/bridge: ti-sn65dsi86: Remove extra call: drm_connector_update_edid_property() Douglas Anderson
2021-04-05 1:01 ` Laurent Pinchart
2021-04-02 22:28 ` [PATCH v3 08/12] drm/bridge: ti-sn65dsi86: Power things properly for reading the EDID Douglas Anderson
2021-04-02 22:28 ` [PATCH v3 09/12] drm/bridge: ti-sn65dsi86: Fail aux transfers right away if not powered Douglas Anderson
2021-04-02 22:28 ` [PATCH v3 10/12] drm/bridge: ti-sn65dsi86: Read the EDID only if refclk was provided Douglas Anderson
2021-04-05 1:04 ` Laurent Pinchart
2021-04-02 22:28 ` [PATCH v3 11/12] drm/bridge: ti-sn65dsi86: Print an error if we fallback to panel modes Douglas Anderson
2021-04-05 1:04 ` Laurent Pinchart [this message]
2021-04-02 22:28 ` [PATCH v3 12/12] drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare Douglas Anderson
2021-04-15 0:58 ` Laurent Pinchart
2021-04-15 1:22 ` Doug Anderson
2021-04-15 1:30 ` Laurent Pinchart
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YGpiMQkJbvdO6obJ@pendragon.ideasonboard.com \
--to=laurent.pinchart@ideasonboard.com \
--cc=a.hajda@samsung.com \
--cc=airlied@linux.ie \
--cc=bjorn.andersson@linaro.org \
--cc=daniel@ffwll.ch \
--cc=dianders@chromium.org \
--cc=dri-devel@lists.freedesktop.org \
--cc=jernej.skrabec@siol.net \
--cc=jonas@kwiboo.se \
--cc=linus.walleij@linaro.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maarten.lankhorst@linux.intel.com \
--cc=narmstrong@baylibre.com \
--cc=robdclark@chromium.org \
--cc=robert.foss@linaro.org \
--cc=sam@ravnborg.org \
--cc=stanislav.lisovskiy@intel.com \
--cc=steev@kali.org \
--cc=swboyd@chromium.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).