[PATCH v9 07/18] media: platform: Improve the implementation of the system PM ops

[Xia Jiang]

Add v4l2_m2m_suspend() function call in mtk_jpeg_suspend() to make sure
that the current frame is processed completely before suspend.
Add v4l2_m2m_resume() function call in mtk_jpeg_resume() to unblock the
driver from scheduling next frame.

Signed-off-by: Xia Jiang <xia.ji...@mediatek.com>
---
v9: use v4l2_m2m_suspend() and v4l2_m2m_resume() to improve the
    implemention of the system PM ops
---
 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c 
b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
index 7f74597262fc..49bdbf1c435f 100644
--- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
@@ -1208,10 +1208,13 @@ static __maybe_unused int mtk_jpeg_pm_resume(struct 
device *dev)
 static __maybe_unused int mtk_jpeg_suspend(struct device *dev)
 {
        int ret;
+       struct mtk_jpeg_dev *jpeg = dev_get_drvdata(dev);
 
        if (pm_runtime_suspended(dev))
                return 0;
 
+       v4l2_m2m_suspend(jpeg->m2m_dev);
+
        ret = mtk_jpeg_pm_suspend(dev);
        return ret;
 }
@@ -1219,12 +1222,15 @@ static __maybe_unused int mtk_jpeg_suspend(struct 
device *dev)
 static __maybe_unused int mtk_jpeg_resume(struct device *dev)
 {
        int ret;
+       struct mtk_jpeg_dev *jpeg = dev_get_drvdata(dev);
 
        if (pm_runtime_suspended(dev))
                return 0;
 
        ret = mtk_jpeg_pm_resume(dev);
 
+       v4l2_m2m_resume(jpeg->m2m_dev);
+
        return ret;
 }
 
-- 
2.18.0