From d1e2dbc2c5502398f19621c821acdf988f44cd07 Mon Sep 17 00:00:00 2001
From: Qiang Yu <yuq825@gmail.com>
Date: Tue, 21 Apr 2020 21:35:46 +0800
Subject: drm/lima: add lima_devfreq_resume/suspend
Git-commit: 4836cf044d74eb70bb28d3460d8c82e4aaf56d65
Patch-mainline: v5.8-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322

Used for device resume/suspend in the following commits.

Tested-by: Bhushan Shah <bshah@kde.org>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200421133551.31481-6-yuq825@gmail.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/lima/lima_devfreq.c | 24 ++++++++++++++++++++++++
 drivers/gpu/drm/lima/lima_devfreq.h |  3 +++
 2 files changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/lima/lima_devfreq.c b/drivers/gpu/drm/lima/lima_devfreq.c
index 1d479b5924fe..bbe02817721b 100644
--- a/drivers/gpu/drm/lima/lima_devfreq.c
+++ b/drivers/gpu/drm/lima/lima_devfreq.c
@@ -231,3 +231,27 @@ void lima_devfreq_record_idle(struct lima_devfreq *devfreq)
 
 	spin_unlock_irqrestore(&devfreq->lock, irqflags);
 }
+
+int lima_devfreq_resume(struct lima_devfreq *devfreq)
+{
+	unsigned long irqflags;
+
+	if (!devfreq->devfreq)
+		return 0;
+
+	spin_lock_irqsave(&devfreq->lock, irqflags);
+
+	lima_devfreq_reset(devfreq);
+
+	spin_unlock_irqrestore(&devfreq->lock, irqflags);
+
+	return devfreq_resume_device(devfreq->devfreq);
+}
+
+int lima_devfreq_suspend(struct lima_devfreq *devfreq)
+{
+	if (!devfreq->devfreq)
+		return 0;
+
+	return devfreq_suspend_device(devfreq->devfreq);
+}
diff --git a/drivers/gpu/drm/lima/lima_devfreq.h b/drivers/gpu/drm/lima/lima_devfreq.h
index 8d71ba9fb22a..5eed2975a375 100644
--- a/drivers/gpu/drm/lima/lima_devfreq.h
+++ b/drivers/gpu/drm/lima/lima_devfreq.h
@@ -38,4 +38,7 @@ void lima_devfreq_fini(struct lima_device *ldev);
 void lima_devfreq_record_busy(struct lima_devfreq *devfreq);
 void lima_devfreq_record_idle(struct lima_devfreq *devfreq);
 
+int lima_devfreq_resume(struct lima_devfreq *devfreq);
+int lima_devfreq_suspend(struct lima_devfreq *devfreq);
+
 #endif
-- 
2.28.0