media: mediatek: vcodec: Skip SOURCE_CHANGE & EOS events for stateless

[ Upstream commit e13ca460e20ed42fe57a3845b0bb9a82f81f05cd ]

The stateless decoder API does not specify the usage of SOURCE_CHANGE
and EOF events. These events are used by stateful decoders to signal
changes in the bitstream. They do not make sense for stateless decoders.

Do not handle subscription for these two types of events for stateless
decoder instances. This fixes the last v4l2-compliance error:

Control ioctls:
		fail: v4l2-test-controls.cpp(946): have_source_change || have_eos
	test VIDIOC_(UN)SUBSCRIBE_EVENT/DQEVENT: FAIL

Fixes: 8cdc3794b2e3 ("media: mtk-vcodec: vdec: support stateless API")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
index 4bb8a275127198a3ee4389d617d42a98c00be738..54489f64533e722d4b62d83d3a5c3ecc05106f16 100644 (file)
--- a/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
+++ b/drivers/media/platform/mediatek/vcodec/mtk_vcodec_dec.c
@@ -194,6 +194,11 @@ static int vidioc_vdec_querycap(struct file *file, void *priv,
 static int vidioc_vdec_subscribe_evt(struct v4l2_fh *fh,
                                     const struct v4l2_event_subscription *sub)
 {
+       struct mtk_vcodec_ctx *ctx = fh_to_ctx(fh);
+
+       if (ctx->dev->vdec_pdata->uses_stateless_api)
+               return v4l2_ctrl_subscribe_event(fh, sub);
+
        switch (sub->type) {
        case V4L2_EVENT_EOS:
                return v4l2_event_subscribe(fh, sub, 2, NULL);