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Diffstat (limited to 'drivers/media/platform/omap3isp/ispqueue.h')
| -rw-r--r-- | drivers/media/platform/omap3isp/ispqueue.h | 188 |
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 3e048ad6564..00000000000 --- 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 */ |