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Subject: media: cedrus: Program output format during each run Author: Samuel Holland samuel@sholland.org Date: Sat May 9 22:06:42 2020 +0200

Previously, the output format was programmed as part of the ioctl() handler. However, this has two problems:

1) If there are multiple active streams with different output formats, the hardware will use whichever format was set last for both streams. Similarly, an ioctl() done in an inactive context will wrongly affect other active contexts. 2) The registers are written while the device is not actively streaming. To enable runtime PM tied to the streaming state, all hardware access needs to be moved inside cedrus_device_run().

The call to cedrus_dst_format_set() is now placed just before the codec-specific callback that programs the hardware.

Cc: stable@vger.kernel.org Fixes: 50e761516f2b ("media: platform: Add Cedrus VPU decoder driver") Suggested-by: Jernej Skrabec jernej.skrabec@siol.net Suggested-by: Paul Kocialkowski paul.kocialkowski@bootlin.com Signed-off-by: Samuel Holland samuel@sholland.org Tested-by: Jernej Skrabec jernej.skrabec@siol.net Reviewed-by: Jernej Skrabec jernej.skrabec@siol.net Reviewed-by: Ezequiel Garcia ezequiel@collabora.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org

drivers/staging/media/sunxi/cedrus/cedrus_dec.c | 2 ++ drivers/staging/media/sunxi/cedrus/cedrus_video.c | 3 --- 2 files changed, 2 insertions(+), 3 deletions(-)

---

diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c index 4a2fc33a1d79..58c48e4fdfe9 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_dec.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus_dec.c @@ -74,6 +74,8 @@ void cedrus_device_run(void *priv)

v4l2_m2m_buf_copy_metadata(run.src, run.dst, true);

+ cedrus_dst_format_set(dev, &ctx->dst_fmt); + dev->dec_ops[ctx->current_codec]->setup(ctx, &run);

/* Complete request(s) controls if needed. */ diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_video.c b/drivers/staging/media/sunxi/cedrus/cedrus_video.c index 15cf1f10221b..ed3f511f066f 100644 --- a/drivers/staging/media/sunxi/cedrus/cedrus_video.c +++ b/drivers/staging/media/sunxi/cedrus/cedrus_video.c @@ -273,7 +273,6 @@ static int cedrus_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cedrus_ctx *ctx = cedrus_file2ctx(file); - struct cedrus_dev *dev = ctx->dev; struct vb2_queue *vq; int ret;

@@ -287,8 +286,6 @@ static int cedrus_s_fmt_vid_cap(struct file *file, void *priv,

ctx->dst_fmt = f->fmt.pix;

- cedrus_dst_format_set(dev, &ctx->dst_fmt); - return 0; }