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- /* SPDX-License-Identifier: GPL-2.0-only */
- /*
- * helper functions for vmalloc capture buffers
- *
- * The functions expect the hardware being able to scatter gather
- * (i.e. the buffers are not linear in physical memory, but fragmented
- * into PAGE_SIZE chunks). They also assume the driver does not need
- * to touch the video data.
- *
- * (c) 2007 Mauro Carvalho Chehab, <[email protected]>
- */
- #ifndef _VIDEOBUF_VMALLOC_H
- #define _VIDEOBUF_VMALLOC_H
- #include <media/videobuf-core.h>
- /* --------------------------------------------------------------------- */
- struct videobuf_vmalloc_memory {
- u32 magic;
- void *vaddr;
- /* remap_vmalloc_range seems to need to run
- * after mmap() on some cases */
- struct vm_area_struct *vma;
- };
- void videobuf_queue_vmalloc_init(struct videobuf_queue *q,
- const struct videobuf_queue_ops *ops,
- struct device *dev,
- spinlock_t *irqlock,
- enum v4l2_buf_type type,
- enum v4l2_field field,
- unsigned int msize,
- void *priv,
- struct mutex *ext_lock);
- void *videobuf_to_vmalloc(struct videobuf_buffer *buf);
- void videobuf_vmalloc_free(struct videobuf_buffer *buf);
- #endif
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