linux-kernel - [PATCH 5/5] drm/panel-samsung-atna33xc20: Extend autosuspend delay

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Message-Id: <20221117133655.5.I96ce2a565ff893eddcbee70174c991179311a3ae@changeid>
Date:   Thu, 17 Nov 2022 13:38:48 -0700
From:   Drew Davenport <ddavenport@...omium.org>
To:     dri-devel@...ts.freedesktop.org
Cc:     dianders@...omium.org, Drew Davenport <ddavenport@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Thierry Reding <thierry.reding@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] drm/panel-samsung-atna33xc20: Extend autosuspend delay

Avoid the panel oscillating on and off during boot. In some cases it
will be more than 1000ms between powering the panel to read the EDID early
during boot, and enabling the panel for display. Extending the
autosuspend delay avoids autosuspending during this interval.

Signed-off-by: Drew Davenport <ddavenport@...omium.org>

---

 drivers/gpu/drm/panel/panel-samsung-atna33xc20.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c
index f4616f0367846..5703f4712d96e 100644
--- a/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c
+++ b/drivers/gpu/drm/panel/panel-samsung-atna33xc20.c
@@ -310,7 +310,7 @@ static int atana33xc20_probe(struct dp_aux_ep_device *aux_ep)
 	ret = devm_add_action_or_reset(dev,  atana33xc20_runtime_disable, dev);
 	if (ret)
 		return ret;
-	pm_runtime_set_autosuspend_delay(dev, 1000);
+	pm_runtime_set_autosuspend_delay(dev, 2000);
 	pm_runtime_use_autosuspend(dev);
 	ret = devm_add_action_or_reset(dev,  atana33xc20_dont_use_autosuspend, dev);
 	if (ret)
-- 
2.38.1.584.g0f3c55d4c2-goog