linux-kernel - [PATCH 3/5] drm/panel-simple: Use ktime_get

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Message-Id: <20221117133655.3.Iebd9f79aba0a62015fd2383fe6986c2d6fe12cfd@changeid>
Date:   Thu, 17 Nov 2022 13:38:46 -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 3/5] drm/panel-simple: Use ktime_get_boottime for delays

ktime_get_boottime continues while the device is suspended. This change
ensures that the resume path will not be delayed if the power off delay
has already been met while the device is suspended

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

 drivers/gpu/drm/panel/panel-simple.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 8a3b685c2fcc0..065f378bba9d2 100644
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -280,7 +280,7 @@ static void panel_simple_wait(ktime_t start_ktime, unsigned int min_ms)
 		return;
 
 	min_ktime = ktime_add(start_ktime, ms_to_ktime(min_ms));
-	now_ktime = ktime_get();
+	now_ktime = ktime_get_boottime();
 
 	if (ktime_before(now_ktime, min_ktime))
 		msleep(ktime_to_ms(ktime_sub(min_ktime, now_ktime)) + 1);
@@ -307,7 +307,7 @@ static int panel_simple_suspend(struct device *dev)
 
 	gpiod_set_value_cansleep(p->enable_gpio, 0);
 	regulator_disable(p->supply);
-	p->unprepared_time = ktime_get();
+	p->unprepared_time = ktime_get_boottime();
 
 	kfree(p->edid);
 	p->edid = NULL;
@@ -351,7 +351,7 @@ static int panel_simple_resume(struct device *dev)
 	if (p->desc->delay.prepare)
 		msleep(p->desc->delay.prepare);
 
-	p->prepared_time = ktime_get();
+	p->prepared_time = ktime_get_boottime();
 
 	return 0;
 }
-- 
2.38.1.584.g0f3c55d4c2-goog