summaryrefslogtreecommitdiffstats
path: root/drivers/media/platform/omap3isp/ispqueue.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/platform/omap3isp/ispqueue.h')
-rw-r--r--drivers/media/platform/omap3isp/ispqueue.h188
1 files changed, 0 insertions, 188 deletions
diff --git a/drivers/media/platform/omap3isp/ispqueue.h b/drivers/media/platform/omap3isp/ispqueue.h
deleted file mode 100644
index 3e048ad65647..000000000000
--- a/drivers/media/platform/omap3isp/ispqueue.h
+++ /dev/null
@@ -1,188 +0,0 @@
-/*
- * ispqueue.h
- *
- * TI OMAP3 ISP - Video buffers queue handling
- *
- * Copyright (C) 2010 Nokia Corporation
- *
- * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
- * Sakari Ailus <sakari.ailus@iki.fi>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-
-#ifndef OMAP3_ISP_QUEUE_H
-#define OMAP3_ISP_QUEUE_H
-
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/mm_types.h>
-#include <linux/mutex.h>
-#include <linux/videodev2.h>
-#include <linux/wait.h>
-
-struct isp_video_queue;
-struct page;
-struct scatterlist;
-
-#define ISP_VIDEO_MAX_BUFFERS 16
-
-/**
- * enum isp_video_buffer_state - ISP video buffer state
- * @ISP_BUF_STATE_IDLE: The buffer is under userspace control (dequeued
- * or not queued yet).
- * @ISP_BUF_STATE_QUEUED: The buffer has been queued but isn't used by the
- * device yet.
- * @ISP_BUF_STATE_ACTIVE: The buffer is in use for an active video transfer.
- * @ISP_BUF_STATE_ERROR: The device is done with the buffer and an error
- * occurred. For capture device the buffer likely contains corrupted data or
- * no data at all.
- * @ISP_BUF_STATE_DONE: The device is done with the buffer and no error occurred.
- * For capture devices the buffer contains valid data.
- */
-enum isp_video_buffer_state {
- ISP_BUF_STATE_IDLE,
- ISP_BUF_STATE_QUEUED,
- ISP_BUF_STATE_ACTIVE,
- ISP_BUF_STATE_ERROR,
- ISP_BUF_STATE_DONE,
-};
-
-/**
- * struct isp_video_buffer - ISP video buffer
- * @vma_use_count: Number of times the buffer is mmap'ed to userspace
- * @stream: List head for insertion into main queue
- * @queue: ISP buffers queue this buffer belongs to
- * @prepared: Whether the buffer has been prepared
- * @skip_cache: Whether to skip cache management operations for this buffer
- * @vaddr: Memory virtual address (for kernel buffers)
- * @vm_flags: Buffer VMA flags (for userspace buffers)
- * @offset: Offset inside the first page (for userspace buffers)
- * @npages: Number of pages (for userspace buffers)
- * @pages: Pages table (for userspace non-VM_PFNMAP buffers)
- * @paddr: Memory physical address (for userspace VM_PFNMAP buffers)
- * @sglen: Number of elements in the scatter list (for non-VM_PFNMAP buffers)
- * @sglist: Scatter list (for non-VM_PFNMAP buffers)
- * @vbuf: V4L2 buffer
- * @irqlist: List head for insertion into IRQ queue
- * @state: Current buffer state
- * @wait: Wait queue to signal buffer completion
- */
-struct isp_video_buffer {
- unsigned long vma_use_count;
- struct list_head stream;
- struct isp_video_queue *queue;
- unsigned int prepared:1;
- bool skip_cache;
-
- /* For kernel buffers. */
- void *vaddr;
-
- /* For userspace buffers. */
- vm_flags_t vm_flags;
- unsigned long offset;
- unsigned int npages;
- struct page **pages;
- dma_addr_t paddr;
-
- /* For all buffers except VM_PFNMAP. */
- unsigned int sglen;
- struct scatterlist *sglist;
-
- /* Touched by the interrupt handler. */
- struct v4l2_buffer vbuf;
- struct list_head irqlist;
- enum isp_video_buffer_state state;
- wait_queue_head_t wait;
-};
-
-#define to_isp_video_buffer(vb) container_of(vb, struct isp_video_buffer, vb)
-
-/**
- * struct isp_video_queue_operations - Driver-specific operations
- * @queue_prepare: Called before allocating buffers. Drivers should clamp the
- * number of buffers according to their requirements, and must return the
- * buffer size in bytes.
- * @buffer_prepare: Called the first time a buffer is queued, or after changing
- * the userspace memory address for a USERPTR buffer, with the queue lock
- * held. Drivers should perform device-specific buffer preparation (such as
- * mapping the buffer memory in an IOMMU). This operation is optional.
- * @buffer_queue: Called when a buffer is being added to the queue with the
- * queue irqlock spinlock held.
- * @buffer_cleanup: Called before freeing buffers, or before changing the
- * userspace memory address for a USERPTR buffer, with the queue lock held.
- * Drivers must perform cleanup operations required to undo the
- * buffer_prepare call. This operation is optional.
- */
-struct isp_video_queue_operations {
- void (*queue_prepare)(struct isp_video_queue *queue,
- unsigned int *nbuffers, unsigned int *size);
- int (*buffer_prepare)(struct isp_video_buffer *buf);
- void (*buffer_queue)(struct isp_video_buffer *buf);
- void (*buffer_cleanup)(struct isp_video_buffer *buf);
-};
-
-/**
- * struct isp_video_queue - ISP video buffers queue
- * @type: Type of video buffers handled by this queue
- * @ops: Queue operations
- * @dev: Device used for DMA operations
- * @bufsize: Size of a driver-specific buffer object
- * @count: Number of currently allocated buffers
- * @buffers: ISP video buffers
- * @lock: Mutex to protect access to the buffers, main queue and state
- * @irqlock: Spinlock to protect access to the IRQ queue
- * @streaming: Queue state, indicates whether the queue is streaming
- * @queue: List of all queued buffers
- */
-struct isp_video_queue {
- enum v4l2_buf_type type;
- const struct isp_video_queue_operations *ops;
- struct device *dev;
- unsigned int bufsize;
-
- unsigned int count;
- struct isp_video_buffer *buffers[ISP_VIDEO_MAX_BUFFERS];
- struct mutex lock;
- spinlock_t irqlock;
-
- unsigned int streaming:1;
-
- struct list_head queue;
-};
-
-int omap3isp_video_queue_cleanup(struct isp_video_queue *queue);
-int omap3isp_video_queue_init(struct isp_video_queue *queue,
- enum v4l2_buf_type type,
- const struct isp_video_queue_operations *ops,
- struct device *dev, unsigned int bufsize);
-
-int omap3isp_video_queue_reqbufs(struct isp_video_queue *queue,
- struct v4l2_requestbuffers *rb);
-int omap3isp_video_queue_querybuf(struct isp_video_queue *queue,
- struct v4l2_buffer *vbuf);
-int omap3isp_video_queue_qbuf(struct isp_video_queue *queue,
- struct v4l2_buffer *vbuf);
-int omap3isp_video_queue_dqbuf(struct isp_video_queue *queue,
- struct v4l2_buffer *vbuf, int nonblocking);
-int omap3isp_video_queue_streamon(struct isp_video_queue *queue);
-void omap3isp_video_queue_streamoff(struct isp_video_queue *queue);
-void omap3isp_video_queue_discard_done(struct isp_video_queue *queue);
-int omap3isp_video_queue_mmap(struct isp_video_queue *queue,
- struct vm_area_struct *vma);
-unsigned int omap3isp_video_queue_poll(struct isp_video_queue *queue,
- struct file *file, poll_table *wait);
-
-#endif /* OMAP3_ISP_QUEUE_H */