Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 107 insertions, 0 deletions

diff --git a/drivers/media/platform/xilinx/xilinx-dma.h b/drivers/media/platform/xilinx/xilinx-dma.h
new file mode 100644
index 000000000..e95d136c1
--- /dev/null
+++ b/drivers/media/platform/xilinx/xilinx-dma.h
@@ -0,0 +1,107 @@
+/*
+ * Xilinx Video DMA
+ *
+ * Copyright (C) 2013-2015 Ideas on Board
+ * Copyright (C) 2013-2015 Xilinx, Inc.
+ *
+ * Contacts: Hyun Kwon <hyun.kwon@xilinx.com>
+ *           Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __XILINX_VIP_DMA_H__
+#define __XILINX_VIP_DMA_H__
+
+#include <linux/dmaengine.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/videodev2.h>
+
+#include <media/media-entity.h>
+#include <media/v4l2-dev.h>
+#include <media/videobuf2-v4l2.h>
+
+struct dma_chan;
+struct xvip_composite_device;
+struct xvip_video_format;
+
+/**
+ * struct xvip_pipeline - Xilinx Video IP pipeline structure
+ * @pipe: media pipeline
+ * @lock: protects the pipeline @stream_count
+ * @use_count: number of DMA engines using the pipeline
+ * @stream_count: number of DMA engines currently streaming
+ * @num_dmas: number of DMA engines in the pipeline
+ * @output: DMA engine at the output of the pipeline
+ */
+struct xvip_pipeline {
+	struct media_pipeline pipe;
+
+	struct mutex lock;
+	unsigned int use_count;
+	unsigned int stream_count;
+
+	unsigned int num_dmas;
+	struct xvip_dma *output;
+};
+
+static inline struct xvip_pipeline *to_xvip_pipeline(struct media_entity *e)
+{
+	return container_of(e->pipe, struct xvip_pipeline, pipe);
+}
+
+/**
+ * struct xvip_dma - Video DMA channel
+ * @list: list entry in a composite device dmas list
+ * @video: V4L2 video device associated with the DMA channel
+ * @pad: media pad for the video device entity
+ * @xdev: composite device the DMA channel belongs to
+ * @pipe: pipeline belonging to the DMA channel
+ * @port: composite device DT node port number for the DMA channel
+ * @lock: protects the @format, @fmtinfo and @queue fields
+ * @format: active V4L2 pixel format
+ * @fmtinfo: format information corresponding to the active @format
+ * @queue: vb2 buffers queue
+ * @sequence: V4L2 buffers sequence number
+ * @queued_bufs: list of queued buffers
+ * @queued_lock: protects the buf_queued list
+ * @dma: DMA engine channel
+ * @align: transfer alignment required by the DMA channel (in bytes)
+ * @xt: dma interleaved template for dma configuration
+ * @sgl: data chunk structure for dma_interleaved_template
+ */
+struct xvip_dma {
+	struct list_head list;
+	struct video_device video;
+	struct media_pad pad;
+
+	struct xvip_composite_device *xdev;
+	struct xvip_pipeline pipe;
+	unsigned int port;
+
+	struct mutex lock;
+	struct v4l2_pix_format format;
+	const struct xvip_video_format *fmtinfo;
+
+	struct vb2_queue queue;
+	unsigned int sequence;
+
+	struct list_head queued_bufs;
+	spinlock_t queued_lock;
+
+	struct dma_chan *dma;
+	unsigned int align;
+	struct dma_interleaved_template xt;
+	struct data_chunk sgl[1];
+};
+
+#define to_xvip_dma(vdev)	container_of(vdev, struct xvip_dma, video)
+
+int xvip_dma_init(struct xvip_composite_device *xdev, struct xvip_dma *dma,
+		  enum v4l2_buf_type type, unsigned int port);
+void xvip_dma_cleanup(struct xvip_dma *dma);
+
+#endif /* __XILINX_VIP_DMA_H__ */