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[media] omap3isp: Video devices and buffers queue
The OMAP3 ISP video devices and buffers queue modules implement the V4L2 API on all the ISP video nodes. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: David Cohen <dacohen@gmail.com> Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by: Vimarsh Zutshi <vimarsh.zutshi@gmail.com> Signed-off-by: Tuukka Toivonen <tuukkat76@gmail.com> Signed-off-by: Sergio Aguirre <saaguirre@ti.com> Signed-off-by: Antti Koskipaa <akoskipa@gmail.com> Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: RaniSuneela <r-m@ti.com> Signed-off-by: Atanas Filipov <afilipov@mm-sol.com> Signed-off-by: Gjorgji Rosikopulos <grosikopulos@mm-sol.com> Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Nayden Kanchev <nkanchev@mm-sol.com> Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Dominic Curran <dcurran@ti.com> Signed-off-by: Ilkka Myllyperkio <ilkka.myllyperkio@sofica.fi> Signed-off-by: Pallavi Kulkarni <p-kulkarni@ti.com> Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart
Mauro Carvalho Chehab
parent
448de7e785
commit
ad614acb7e
1153
drivers/media/video/omap3isp/ispqueue.c
Normal file
1153
drivers/media/video/omap3isp/ispqueue.c
Normal file
File diff suppressed because it is too large
Load Diff
187
drivers/media/video/omap3isp/ispqueue.h
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187
drivers/media/video/omap3isp/ispqueue.h
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@ -0,0 +1,187 @@
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/*
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* ispqueue.h
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*
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* TI OMAP3 ISP - Video buffers queue handling
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*
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* Copyright (C) 2010 Nokia Corporation
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*
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* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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* Sakari Ailus <sakari.ailus@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef OMAP3_ISP_QUEUE_H
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#define OMAP3_ISP_QUEUE_H
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/videodev2.h>
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#include <linux/wait.h>
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struct isp_video_queue;
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struct page;
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struct scatterlist;
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#define ISP_VIDEO_MAX_BUFFERS 16
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/**
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* enum isp_video_buffer_state - ISP video buffer state
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* @ISP_BUF_STATE_IDLE: The buffer is under userspace control (dequeued
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* or not queued yet).
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* @ISP_BUF_STATE_QUEUED: The buffer has been queued but isn't used by the
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* device yet.
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* @ISP_BUF_STATE_ACTIVE: The buffer is in use for an active video transfer.
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* @ISP_BUF_STATE_ERROR: The device is done with the buffer and an error
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* occured. For capture device the buffer likely contains corrupted data or
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* no data at all.
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* @ISP_BUF_STATE_DONE: The device is done with the buffer and no error occured.
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* For capture devices the buffer contains valid data.
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*/
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enum isp_video_buffer_state {
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ISP_BUF_STATE_IDLE,
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ISP_BUF_STATE_QUEUED,
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ISP_BUF_STATE_ACTIVE,
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ISP_BUF_STATE_ERROR,
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ISP_BUF_STATE_DONE,
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};
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/**
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* struct isp_video_buffer - ISP video buffer
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* @vma_use_count: Number of times the buffer is mmap'ed to userspace
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* @stream: List head for insertion into main queue
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* @queue: ISP buffers queue this buffer belongs to
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* @prepared: Whether the buffer has been prepared
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* @skip_cache: Whether to skip cache management operations for this buffer
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* @vaddr: Memory virtual address (for kernel buffers)
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* @vm_flags: Buffer VMA flags (for userspace buffers)
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* @offset: Offset inside the first page (for userspace buffers)
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* @npages: Number of pages (for userspace buffers)
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* @pages: Pages table (for userspace non-VM_PFNMAP buffers)
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* @paddr: Memory physical address (for userspace VM_PFNMAP buffers)
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* @sglen: Number of elements in the scatter list (for non-VM_PFNMAP buffers)
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* @sglist: Scatter list (for non-VM_PFNMAP buffers)
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* @vbuf: V4L2 buffer
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* @irqlist: List head for insertion into IRQ queue
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* @state: Current buffer state
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* @wait: Wait queue to signal buffer completion
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*/
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struct isp_video_buffer {
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unsigned long vma_use_count;
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struct list_head stream;
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struct isp_video_queue *queue;
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unsigned int prepared:1;
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bool skip_cache;
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/* For kernel buffers. */
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void *vaddr;
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/* For userspace buffers. */
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unsigned long vm_flags;
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unsigned long offset;
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unsigned int npages;
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struct page **pages;
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dma_addr_t paddr;
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/* For all buffers except VM_PFNMAP. */
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unsigned int sglen;
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struct scatterlist *sglist;
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/* Touched by the interrupt handler. */
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struct v4l2_buffer vbuf;
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struct list_head irqlist;
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enum isp_video_buffer_state state;
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wait_queue_head_t wait;
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};
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#define to_isp_video_buffer(vb) container_of(vb, struct isp_video_buffer, vb)
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/**
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* struct isp_video_queue_operations - Driver-specific operations
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* @queue_prepare: Called before allocating buffers. Drivers should clamp the
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* number of buffers according to their requirements, and must return the
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* buffer size in bytes.
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* @buffer_prepare: Called the first time a buffer is queued, or after changing
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* the userspace memory address for a USERPTR buffer, with the queue lock
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* held. Drivers should perform device-specific buffer preparation (such as
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* mapping the buffer memory in an IOMMU). This operation is optional.
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* @buffer_queue: Called when a buffer is being added to the queue with the
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* queue irqlock spinlock held.
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* @buffer_cleanup: Called before freeing buffers, or before changing the
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* userspace memory address for a USERPTR buffer, with the queue lock held.
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* Drivers must perform cleanup operations required to undo the
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* buffer_prepare call. This operation is optional.
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*/
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struct isp_video_queue_operations {
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void (*queue_prepare)(struct isp_video_queue *queue,
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unsigned int *nbuffers, unsigned int *size);
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int (*buffer_prepare)(struct isp_video_buffer *buf);
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void (*buffer_queue)(struct isp_video_buffer *buf);
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void (*buffer_cleanup)(struct isp_video_buffer *buf);
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};
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/**
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* struct isp_video_queue - ISP video buffers queue
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* @type: Type of video buffers handled by this queue
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* @ops: Queue operations
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* @dev: Device used for DMA operations
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* @bufsize: Size of a driver-specific buffer object
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* @count: Number of currently allocated buffers
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* @buffers: ISP video buffers
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* @lock: Mutex to protect access to the buffers, main queue and state
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* @irqlock: Spinlock to protect access to the IRQ queue
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* @streaming: Queue state, indicates whether the queue is streaming
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* @queue: List of all queued buffers
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*/
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struct isp_video_queue {
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enum v4l2_buf_type type;
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const struct isp_video_queue_operations *ops;
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struct device *dev;
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unsigned int bufsize;
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unsigned int count;
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struct isp_video_buffer *buffers[ISP_VIDEO_MAX_BUFFERS];
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struct mutex lock;
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spinlock_t irqlock;
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unsigned int streaming:1;
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struct list_head queue;
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};
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int omap3isp_video_queue_cleanup(struct isp_video_queue *queue);
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int omap3isp_video_queue_init(struct isp_video_queue *queue,
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enum v4l2_buf_type type,
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const struct isp_video_queue_operations *ops,
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struct device *dev, unsigned int bufsize);
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int omap3isp_video_queue_reqbufs(struct isp_video_queue *queue,
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struct v4l2_requestbuffers *rb);
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int omap3isp_video_queue_querybuf(struct isp_video_queue *queue,
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struct v4l2_buffer *vbuf);
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int omap3isp_video_queue_qbuf(struct isp_video_queue *queue,
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struct v4l2_buffer *vbuf);
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int omap3isp_video_queue_dqbuf(struct isp_video_queue *queue,
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struct v4l2_buffer *vbuf, int nonblocking);
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int omap3isp_video_queue_streamon(struct isp_video_queue *queue);
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void omap3isp_video_queue_streamoff(struct isp_video_queue *queue);
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void omap3isp_video_queue_discard_done(struct isp_video_queue *queue);
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int omap3isp_video_queue_mmap(struct isp_video_queue *queue,
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struct vm_area_struct *vma);
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unsigned int omap3isp_video_queue_poll(struct isp_video_queue *queue,
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struct file *file, poll_table *wait);
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#endif /* OMAP3_ISP_QUEUE_H */
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1264
drivers/media/video/omap3isp/ispvideo.c
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1264
drivers/media/video/omap3isp/ispvideo.c
Normal file
File diff suppressed because it is too large
Load Diff
202
drivers/media/video/omap3isp/ispvideo.h
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202
drivers/media/video/omap3isp/ispvideo.h
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@ -0,0 +1,202 @@
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/*
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* ispvideo.h
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*
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* TI OMAP3 ISP - Generic video node
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*
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* Copyright (C) 2009-2010 Nokia Corporation
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*
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* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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* Sakari Ailus <sakari.ailus@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef OMAP3_ISP_VIDEO_H
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#define OMAP3_ISP_VIDEO_H
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#include <linux/v4l2-mediabus.h>
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#include <linux/version.h>
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#include <media/media-entity.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-fh.h>
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#include "ispqueue.h"
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#define ISP_VIDEO_DRIVER_NAME "ispvideo"
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#define ISP_VIDEO_DRIVER_VERSION KERNEL_VERSION(0, 0, 1)
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struct isp_device;
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struct isp_video;
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struct v4l2_mbus_framefmt;
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struct v4l2_pix_format;
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/*
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* struct isp_format_info - ISP media bus format information
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* @code: V4L2 media bus format code
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* @truncated: V4L2 media bus format code for the same format truncated to 10
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* bits. Identical to @code if the format is 10 bits wide or less.
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* @uncompressed: V4L2 media bus format code for the corresponding uncompressed
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* format. Identical to @code if the format is not DPCM compressed.
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* @pixelformat: V4L2 pixel format FCC identifier
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* @bpp: Bits per pixel
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*/
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struct isp_format_info {
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enum v4l2_mbus_pixelcode code;
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enum v4l2_mbus_pixelcode truncated;
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enum v4l2_mbus_pixelcode uncompressed;
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u32 pixelformat;
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unsigned int bpp;
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};
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enum isp_pipeline_stream_state {
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ISP_PIPELINE_STREAM_STOPPED = 0,
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ISP_PIPELINE_STREAM_CONTINUOUS = 1,
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ISP_PIPELINE_STREAM_SINGLESHOT = 2,
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};
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enum isp_pipeline_state {
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/* The stream has been started on the input video node. */
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ISP_PIPELINE_STREAM_INPUT = 1,
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/* The stream has been started on the output video node. */
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ISP_PIPELINE_STREAM_OUTPUT = 2,
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/* At least one buffer is queued on the input video node. */
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ISP_PIPELINE_QUEUE_INPUT = 4,
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/* At least one buffer is queued on the output video node. */
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ISP_PIPELINE_QUEUE_OUTPUT = 8,
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/* The input entity is idle, ready to be started. */
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ISP_PIPELINE_IDLE_INPUT = 16,
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/* The output entity is idle, ready to be started. */
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ISP_PIPELINE_IDLE_OUTPUT = 32,
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/* The pipeline is currently streaming. */
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ISP_PIPELINE_STREAM = 64,
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};
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struct isp_pipeline {
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struct media_pipeline pipe;
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spinlock_t lock; /* Pipeline state and queue flags */
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unsigned int state;
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enum isp_pipeline_stream_state stream_state;
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struct isp_video *input;
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struct isp_video *output;
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unsigned long l3_ick;
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unsigned int max_rate;
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atomic_t frame_number;
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bool do_propagation; /* of frame number */
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struct v4l2_fract max_timeperframe;
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};
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#define to_isp_pipeline(__e) \
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container_of((__e)->pipe, struct isp_pipeline, pipe)
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static inline int isp_pipeline_ready(struct isp_pipeline *pipe)
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{
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return pipe->state == (ISP_PIPELINE_STREAM_INPUT |
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ISP_PIPELINE_STREAM_OUTPUT |
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ISP_PIPELINE_QUEUE_INPUT |
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ISP_PIPELINE_QUEUE_OUTPUT |
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ISP_PIPELINE_IDLE_INPUT |
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ISP_PIPELINE_IDLE_OUTPUT);
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}
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/*
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* struct isp_buffer - ISP buffer
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* @buffer: ISP video buffer
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* @isp_addr: MMU mapped address (a.k.a. device address) of the buffer.
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*/
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struct isp_buffer {
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struct isp_video_buffer buffer;
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dma_addr_t isp_addr;
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};
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#define to_isp_buffer(buf) container_of(buf, struct isp_buffer, buffer)
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enum isp_video_dmaqueue_flags {
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/* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */
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ISP_VIDEO_DMAQUEUE_UNDERRUN = (1 << 0),
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/* Set when queuing buffer to an empty DMA queue */
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ISP_VIDEO_DMAQUEUE_QUEUED = (1 << 1),
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};
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#define isp_video_dmaqueue_flags_clr(video) \
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({ (video)->dmaqueue_flags = 0; })
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/*
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* struct isp_video_operations - ISP video operations
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* @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF
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* if there was no buffer previously queued.
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*/
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struct isp_video_operations {
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int(*queue)(struct isp_video *video, struct isp_buffer *buffer);
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};
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struct isp_video {
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struct video_device video;
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enum v4l2_buf_type type;
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struct media_pad pad;
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struct mutex mutex; /* format and crop settings */
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atomic_t active;
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struct isp_device *isp;
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unsigned int capture_mem;
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unsigned int bpl_alignment; /* alignment value */
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unsigned int bpl_zero_padding; /* whether the alignment is optional */
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unsigned int bpl_max; /* maximum bytes per line value */
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unsigned int bpl_value; /* bytes per line value */
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unsigned int bpl_padding; /* padding at end of line */
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/* Entity video node streaming */
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unsigned int streaming:1;
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/* Pipeline state */
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struct isp_pipeline pipe;
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struct mutex stream_lock; /* pipeline and stream states */
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/* Video buffers queue */
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struct isp_video_queue *queue;
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struct list_head dmaqueue;
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enum isp_video_dmaqueue_flags dmaqueue_flags;
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const struct isp_video_operations *ops;
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};
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#define to_isp_video(vdev) container_of(vdev, struct isp_video, video)
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struct isp_video_fh {
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struct v4l2_fh vfh;
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struct isp_video *video;
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struct isp_video_queue queue;
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struct v4l2_format format;
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struct v4l2_fract timeperframe;
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};
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#define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh)
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#define isp_video_queue_to_isp_video_fh(q) \
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container_of(q, struct isp_video_fh, queue)
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int omap3isp_video_init(struct isp_video *video, const char *name);
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int omap3isp_video_register(struct isp_video *video,
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struct v4l2_device *vdev);
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void omap3isp_video_unregister(struct isp_video *video);
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struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video,
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unsigned int error);
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void omap3isp_video_resume(struct isp_video *video, int continuous);
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struct media_pad *omap3isp_video_remote_pad(struct isp_video *video);
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const struct isp_format_info *
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omap3isp_video_format_info(enum v4l2_mbus_pixelcode code);
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#endif /* OMAP3_ISP_VIDEO_H */
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