linux-kernel - [PATCH] drm/lima: Use delayed timer as default in devfreq profile

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Date:   Wed, 27 Jan 2021 10:51:21 +0000
From:   Lukasz Luba <lukasz.luba@....com>
To:     linux-kernel@...r.kernel.org, airlied@...ux.ie, daniel@...ll.ch,
        lima@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org
Cc:     yuq825@...il.com, christianshewitt@...il.com, lukasz.luba@....com
Subject: [PATCH] drm/lima: Use delayed timer as default in devfreq profile

Devfreq framework supports 2 modes for monitoring devices.
Use delayed timer as default instead of deferrable timer
in order to monitor the GPU status regardless of CPU idle.

Signed-off-by: Lukasz Luba <lukasz.luba@....com>
---
Hi all,

I've missed the Lima driver while working on Panfrost patch for fixing
the issue with default devfreq framework polling mode. More about this
and the patch, can be found here [1].

Regards,
Lukasz Luba

[1] https://lore.kernel.org/lkml/20210105164111.30122-1-lukasz.luba@arm.com/

 drivers/gpu/drm/lima/lima_devfreq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/lima/lima_devfreq.c b/drivers/gpu/drm/lima/lima_devfreq.c
index 5686ad4aaf7c..f1c9eb3e71bd 100644
--- a/drivers/gpu/drm/lima/lima_devfreq.c
+++ b/drivers/gpu/drm/lima/lima_devfreq.c
@@ -81,6 +81,7 @@ static int lima_devfreq_get_dev_status(struct device *dev,
 }
 
 static struct devfreq_dev_profile lima_devfreq_profile = {
+	.timer = DEVFREQ_TIMER_DELAYED,
 	.polling_ms = 50, /* ~3 frames */
 	.target = lima_devfreq_target,
 	.get_dev_status = lima_devfreq_get_dev_status,
-- 
2.17.1