linux-kernel - [PATCH 5/5] media: iris: configure DMA device for vb2 queue on OUTPUT plane

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Message-ID: <20250620-video_cb-v1-5-9bcac1c8800c@quicinc.com>
Date: Fri, 20 Jun 2025 11:50:55 +0530
From: Vikash Garodia <quic_vgarodia@...cinc.com>
To: Dikshita Agarwal <quic_dikshita@...cinc.com>,
        Abhinav Kumar
	<abhinav.kumar@...ux.dev>,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
CC: <linux-media@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Vikash Garodia
	<quic_vgarodia@...cinc.com>
Subject: [PATCH 5/5] media: iris: configure DMA device for vb2 queue on
 OUTPUT plane

While setting up the vb2 queues, assign "non_pixel" device to manage
OUTPUT plane buffers i.e bitstream buffers incase of decoder. It prefers
the non_pixel device(np_dev) when available, falling back to core->dev
otherwise.

Signed-off-by: Vikash Garodia <quic_vgarodia@...cinc.com>
---
 drivers/media/platform/qcom/iris/iris_vb2.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/media/platform/qcom/iris/iris_vb2.c b/drivers/media/platform/qcom/iris/iris_vb2.c
index cdf11feb590b5cb7804db3fcde7282fb1f9f1a1e..01cc337970400d48063c558c1ac039539dbcbaba 100644
--- a/drivers/media/platform/qcom/iris/iris_vb2.c
+++ b/drivers/media/platform/qcom/iris/iris_vb2.c
@@ -159,6 +159,10 @@ int iris_vb2_queue_setup(struct vb2_queue *q,
 	*num_planes = 1;
 	sizes[0] = f->fmt.pix_mp.plane_fmt[0].sizeimage;
 
+	if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT ||
+	    q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
+		q->dev = core->np_dev ? core->np_dev : core->dev;
+
 unlock:
 	mutex_unlock(&inst->lock);
 

-- 
2.34.1