From 7755b6a3ee806bcaa6dd0a91620da0163b94b95b Mon Sep 17 00:00:00 2001
From: Daniel DeGrasse <daniel.degrasse@nxp.com>
Date: Wed, 15 May 2024 22:32:09 +0000
Subject: [PATCH] samples: video: capture: add support for SMARTDMA

Add support for using the SMARTDMA engine on the FRDM-MCXN947 board with
the video capture sample.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
---
 .../subsys/video/capture/boards/frdm_mcxn947_cpu0.conf |  5 +++++
 samples/subsys/video/capture/src/main.c                | 10 ++++++++++
 2 files changed, 15 insertions(+)
 create mode 100644 samples/subsys/video/capture/boards/frdm_mcxn947_cpu0.conf

diff --git a/samples/subsys/video/capture/boards/frdm_mcxn947_cpu0.conf b/samples/subsys/video/capture/boards/frdm_mcxn947_cpu0.conf
new file mode 100644
index 000000000000000..4a604bc267ef25b
--- /dev/null
+++ b/samples/subsys/video/capture/boards/frdm_mcxn947_cpu0.conf
@@ -0,0 +1,5 @@
+CONFIG_VIDEO_BUFFER_POOL_SZ_MAX=40000
+CONFIG_VIDEO_BUFFER_POOL_NUM_MAX=2
+# Workaround for issue where SDMA driver needs to start before camera, so that
+# clock output will be generated for camera device
+CONFIG_CHECK_INIT_PRIORITIES=n
diff --git a/samples/subsys/video/capture/src/main.c b/samples/subsys/video/capture/src/main.c
index c3c8333f67ed96e..beb0c95c5322a76 100644
--- a/samples/subsys/video/capture/src/main.c
+++ b/samples/subsys/video/capture/src/main.c
@@ -41,6 +41,15 @@ int main(void)
 		return 0;
 	}
 
+	video = dev;
+#elif defined(CONFIG_VIDEO_MCUX_SDMA)
+	const struct device *const dev = DEVICE_DT_GET_ONE(nxp_video_smartdma);
+
+	if (!device_is_ready(dev)) {
+		LOG_ERR("%s: device not ready.\n", dev->name);
+		return 0;
+	}
+
 	video = dev;
 #endif
 
@@ -78,6 +87,7 @@ int main(void)
 	       (char)(fmt.pixelformat >> 24),
 	       fmt.width, fmt.height);
 
+
 	/* Size to allocate for each buffer */
 	bsize = fmt.pitch * fmt.height / caps.vbuf_per_frame;