Commit f9f96451 authored by Xia Jiang's avatar Xia Jiang Committed by Mauro Carvalho Chehab
Browse files

media: platform: Improve the implementation of the system PM ops 



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.

Reviewed-by: default avatarTomasz Figa <tfiga@chromium.org>
Signed-off-by: default avatarXia Jiang <xia.jiang@mediatek.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 911ea8ec

drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c

+8 −10
Original line number Diff line number Diff line
@@ -1207,24 +1207,22 @@ static __maybe_unused int mtk_jpeg_pm_resume(struct device *dev) 


static __maybe_unused int mtk_jpeg_suspend(struct device *dev)

{

	int ret;



	if (pm_runtime_suspended(dev))

		return 0;

	struct mtk_jpeg_dev *jpeg = dev_get_drvdata(dev);



	ret = mtk_jpeg_pm_suspend(dev);

	return ret;

	v4l2_m2m_suspend(jpeg->m2m_dev);

	return pm_runtime_force_suspend(dev);

}



static __maybe_unused int mtk_jpeg_resume(struct device *dev)

{

	struct mtk_jpeg_dev *jpeg = dev_get_drvdata(dev);

	int ret;



	if (pm_runtime_suspended(dev))

		return 0;



	ret = mtk_jpeg_pm_resume(dev);

	ret = pm_runtime_force_resume(dev);

	if (ret < 0)

		return ret;



	v4l2_m2m_resume(jpeg->m2m_dev);

	return ret;

}