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From:   Sebastian Fricke <sebastian.fricke@collabora.com>
Date:   Thu, 12 Oct 2023 13:01:00 +0200
Subject: [PATCH v13 2/8] media: v4l2: Allow M2M job queuing w/o streaming CAP queue
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Message-Id: <20230929-wave5_v13_media_master-v13-2-5ac60ccbf2ce@collabora.com>
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In-Reply-To: <20230929-wave5_v13_media_master-v13-0-5ac60ccbf2ce@collabora.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        NXP Linux Team <linux-imx@nxp.com>,
        Conor Dooley <conor+dt@kernel.org>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Jackson Lee <jackson.lee@chipsnmedia.com>,
        Hans Verkuil <hverkuil@xs4all.nl>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Rob Herring <robh+dt@kernel.org>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Shawn Guo <shawnguo@kernel.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        Nas Chung <nas.chung@chipsnmedia.com>,
        Fabio Estevam <festevam@gmail.com>
Cc:     linux-media@vger.kernel.org, Tomasz Figa <tfiga@chromium.org>,
        linux-kernel@vger.kernel.org,
        Sebastian Fricke <sebastian.fricke@collabora.com>,
        Nicolas Dufresne <nicolas.dufresne@collabora.com>,
        kernel@collabora.com, Robert Beckett <bob.beckett@collabora.com>,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        Darren Etheridge <detheridge@ti.com>
Precedence: bulk

Allow decoder drivers to set the ignore_cap_streaming flag to allow
queuing jobs to the M2M ready queue and perform firmware sequence analysis
with just a streaming OUTPUT queue and available bitstream data.

Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com>
---
 drivers/media/v4l2-core/v4l2-mem2mem.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index 0cc30397fbad..9e983176542b 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -301,9 +301,12 @@ static void __v4l2_m2m_try_queue(struct v4l2_m2m_dev *m2m_dev,
 
 	dprintk("Trying to schedule a job for m2m_ctx: %p\n", m2m_ctx);
 
-	if (!m2m_ctx->out_q_ctx.q.streaming
-	    || !m2m_ctx->cap_q_ctx.q.streaming) {
-		dprintk("Streaming needs to be on for both queues\n");
+	if (!m2m_ctx->out_q_ctx.q.streaming ||
+	    (!m2m_ctx->cap_q_ctx.q.streaming && !m2m_ctx->ignore_cap_streaming)) {
+		if (!m2m_ctx->ignore_cap_streaming)
+			dprintk("Streaming needs to be on for both queues\n");
+		else
+			dprintk("Streaming needs to be on for the OUTPUT queue\n");
 		return;
 	}
 

-- 
2.25.1