[PATCH v4 13/45] media: sun6i-csi: Introduce and use video helper functions

Paul Kocialkowski
2022-04-15T15:37:20Z

Introduce some helpers for buffer and general video configuration.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
.../platform/sunxi/sun6i-csi/sun6i_video.c | 46 +++++++++++--------
1 file changed, 28 insertions(+), 18 deletions(-)

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
index e6c85fcc65bb..e47eeb27dc4e 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
@@ -92,6 +92,29 @@ static bool sun6i_video_format_check(u32 format)
return false;
}

+/* Video */
+
+static void sun6i_video_buffer_configure(struct sun6i_csi_device *csi_dev,
+ struct sun6i_csi_buffer *csi_buffer)
+{
+ csi_buffer->queued_to_csi = true;
+ sun6i_csi_update_buf_addr(csi_dev, csi_buffer->dma_addr);
+}
+
+static void sun6i_video_configure(struct sun6i_csi_device *csi_dev)
+{
+ struct sun6i_video *video = &csi_dev->video;
+ struct sun6i_csi_config config = { 0 };
+
+ config.pixelformat = video->format.fmt.pix.pixelformat;
+ config.code = video->mbus_code;
+ config.field = video->format.fmt.pix.field;
+ config.width = video->format.fmt.pix.width;
+ config.height = video->format.fmt.pix.height;
+
+ sun6i_csi_update_config(csi_dev, &config);
+}
+
/* Queue */

static int sun6i_video_queue_setup(struct vb2_queue *queue,
@@ -160,7 +183,6 @@ static int sun6i_video_start_streaming(struct vb2_queue *queue,
struct video_device *video_dev = &video->video_dev;
struct sun6i_csi_buffer *buf;
struct sun6i_csi_buffer *next_buf;
- struct sun6i_csi_config config;
struct v4l2_subdev *subdev;
unsigned long flags;
int ret;
@@ -182,22 +204,13 @@ static int sun6i_video_start_streaming(struct vb2_queue *queue,
goto error_media_pipeline;
}

- config.pixelformat = video->format.fmt.pix.pixelformat;
- config.code = video->mbus_code;
- config.field = video->format.fmt.pix.field;
- config.width = video->format.fmt.pix.width;
- config.height = video->format.fmt.pix.height;
-
- ret = sun6i_csi_update_config(csi_dev, &config);
- if (ret < 0)
- goto error_media_pipeline;
+ sun6i_video_configure(csi_dev);

spin_lock_irqsave(&video->dma_queue_lock, flags);

buf = list_first_entry(&video->dma_queue,
struct sun6i_csi_buffer, list);
- buf->queued_to_csi = true;
- sun6i_csi_update_buf_addr(csi_dev, buf->dma_addr);
+ sun6i_video_buffer_configure(csi_dev, buf);

sun6i_csi_set_stream(csi_dev, true);

@@ -219,8 +232,7 @@ static int sun6i_video_start_streaming(struct vb2_queue *queue,
* would also drop frame when lacking of queued buffer.
*/
next_buf = list_next_entry(buf, list);
- next_buf->queued_to_csi = true;
- sun6i_csi_update_buf_addr(csi_dev, next_buf->dma_addr);
+ sun6i_video_buffer_configure(csi_dev, next_buf);

spin_unlock_irqrestore(&video->dma_queue_lock, flags);

@@ -294,8 +306,7 @@ void sun6i_video_frame_done(struct sun6i_csi_device *csi_dev)
* for next ISR call.
*/
if (!next_buf->queued_to_csi) {
- next_buf->queued_to_csi = true;
- sun6i_csi_update_buf_addr(csi_dev, next_buf->dma_addr);
+ sun6i_video_buffer_configure(csi_dev, next_buf);
dev_dbg(csi_dev->dev, "Frame dropped!\n");
goto complete;
}
@@ -309,8 +320,7 @@ void sun6i_video_frame_done(struct sun6i_csi_device *csi_dev)
/* Prepare buffer for next frame but one. */
if (!list_is_last(&next_buf->list, &video->dma_queue)) {
next_buf = list_next_entry(next_buf, list);
- next_buf->queued_to_csi = true;
- sun6i_csi_update_buf_addr(csi_dev, next_buf->dma_addr);
+ sun6i_video_buffer_configure(csi_dev, next_buf);
} else {
dev_dbg(csi_dev->dev, "Next frame will be dropped!\n");
}