[v2,05/10] drm/lima: add lima_devfreq_resume/suspend

Commit Message

Qiang Yu April 21, 2020, 1:35 p.m. UTC

Used for device resume/suspend in the following commits.

Signed-off-by: Qiang Yu <[e-mail]>
---
 drivers/gpu/drm/lima/lima_devfreq.c | 24 ++++++++++++++++++++++++
 drivers/gpu/drm/lima/lima_devfreq.h |  3 +++
 2 files changed, 27 insertions(+)

Patch

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