[Lima] [PATCH 1/4] drm/lima: add lima_devfreq_resume/suspend

[Qiang Yu]

Used for device resume/suspend in the following commits.

Tested-by: Bhushan Shah <bshah at kde.org>
Signed-off-by: Qiang Yu <yuq825 at gmail.com>
---
 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 8c4d21d07529..f5bf85bbbb67 100644
--- a/drivers/gpu/drm/lima/lima_devfreq.c
+++ b/drivers/gpu/drm/lima/lima_devfreq.c
@@ -232,3 +232,27 @@ 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
-- 
2.17.1