[PATCH v12 08/29] media: platform: Improve the implementation of the system PM ops
From: Xia Jiang <hidden>
Date: 2020-08-14 07:15:21
Also in:
linux-arm-kernel, linux-media, linux-mediatek, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
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: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Xia Jiang <redacted> --- v12: no changes --- .../media/platform/mtk-jpeg/mtk_jpeg_core.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-)
diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
index 7f74597262fc..ee4aaf618551 100644
--- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c@@ -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; }
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2.18.0