/* * ispvideo.h * * TI OMAP3 ISP - Generic video node * * Copyright (C) 2009-2010 Nokia Corporation * * Contacts: Laurent Pinchart * Sakari Ailus * * 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_VIDEO_H #define OMAP3_ISP_VIDEO_H #include #include #include #include #include "ispqueue.h" #define ISP_VIDEO_DRIVER_NAME "ispvideo" #define ISP_VIDEO_DRIVER_VERSION "0.0.2" struct isp_device; struct isp_video; struct v4l2_mbus_framefmt; struct v4l2_pix_format; /* * struct isp_format_info - ISP media bus format information * @code: V4L2 media bus format code * @truncated: V4L2 media bus format code for the same format truncated to 10 * bits. Identical to @code if the format is 10 bits wide or less. * @uncompressed: V4L2 media bus format code for the corresponding uncompressed * format. Identical to @code if the format is not DPCM compressed. * @flavor: V4L2 media bus format code for the same pixel layout but * shifted to be 8 bits per pixel. =0 if format is not shiftable. * @pixelformat: V4L2 pixel format FCC identifier * @bpp: Bits per pixel */ struct isp_format_info { enum v4l2_mbus_pixelcode code; enum v4l2_mbus_pixelcode truncated; enum v4l2_mbus_pixelcode uncompressed; enum v4l2_mbus_pixelcode flavor; u32 pixelformat; unsigned int bpp; }; enum isp_pipeline_stream_state { ISP_PIPELINE_STREAM_STOPPED = 0, ISP_PIPELINE_STREAM_CONTINUOUS = 1, ISP_PIPELINE_STREAM_SINGLESHOT = 2, }; enum isp_pipeline_state { /* The stream has been started on the input video node. */ ISP_PIPELINE_STREAM_INPUT = 1, /* The stream has been started on the output video node. */ ISP_PIPELINE_STREAM_OUTPUT = 2, /* At least one buffer is queued on the input video node. */ ISP_PIPELINE_QUEUE_INPUT = 4, /* At least one buffer is queued on the output video node. */ ISP_PIPELINE_QUEUE_OUTPUT = 8, /* The input entity is idle, ready to be started. */ ISP_PIPELINE_IDLE_INPUT = 16, /* The output entity is idle, ready to be started. */ ISP_PIPELINE_IDLE_OUTPUT = 32, /* The pipeline is currently streaming. */ ISP_PIPELINE_STREAM = 64, }; struct isp_pipeline { struct media_pipeline pipe; spinlock_t lock; /* Pipeline state and queue flags */ unsigned int state; enum isp_pipeline_stream_state stream_state; struct isp_video *input; struct isp_video *output; unsigned long l3_ick; unsigned int max_rate; atomic_t frame_number; bool do_propagation; /* of frame number */ struct v4l2_fract max_timeperframe; }; #define to_isp_pipeline(__e) \ container_of((__e)->pipe, struct isp_pipeline, pipe) static inline int isp_pipeline_ready(struct isp_pipeline *pipe) { return pipe->state == (ISP_PIPELINE_STREAM_INPUT | ISP_PIPELINE_STREAM_OUTPUT | ISP_PIPELINE_QUEUE_INPUT | ISP_PIPELINE_QUEUE_OUTPUT | ISP_PIPELINE_IDLE_INPUT | ISP_PIPELINE_IDLE_OUTPUT); } /* * struct isp_buffer - ISP buffer * @buffer: ISP video buffer * @isp_addr: MMU mapped address (a.k.a. device address) of the buffer. */ struct isp_buffer { struct isp_video_buffer buffer; dma_addr_t isp_addr; }; #define to_isp_buffer(buf) container_of(buf, struct isp_buffer, buffer) enum isp_video_dmaqueue_flags { /* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */ ISP_VIDEO_DMAQUEUE_UNDERRUN = (1 << 0), /* Set when queuing buffer to an empty DMA queue */ ISP_VIDEO_DMAQUEUE_QUEUED = (1 << 1), }; #define isp_video_dmaqueue_flags_clr(video) \ ({ (video)->dmaqueue_flags = 0; }) /* * struct isp_video_operations - ISP video operations * @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF * if there was no buffer previously queued. */ struct isp_video_operations { int(*queue)(struct isp_video *video, struct isp_buffer *buffer); }; struct isp_video { struct video_device video; enum v4l2_buf_type type; struct media_pad pad; struct mutex mutex; /* format and crop settings */ atomic_t active; struct isp_device *isp; unsigned int capture_mem; unsigned int bpl_alignment; /* alignment value */ unsigned int bpl_zero_padding; /* whether the alignment is optional */ unsigned int bpl_max; /* maximum bytes per line value */ unsigned int bpl_value; /* bytes per line value */ unsigned int bpl_padding; /* padding at end of line */ /* Entity video node streaming */ unsigned int streaming:1; /* Pipeline state */ struct isp_pipeline pipe; struct mutex stream_lock; /* pipeline and stream states */ /* Video buffers queue */ struct isp_video_queue *queue; struct list_head dmaqueue; enum isp_video_dmaqueue_flags dmaqueue_flags; const struct isp_video_operations *ops; }; #define to_isp_video(vdev) container_of(vdev, struct isp_video, video) struct isp_video_fh { struct v4l2_fh vfh; struct isp_video *video; struct isp_video_queue queue; struct v4l2_format format; struct v4l2_fract timeperframe; }; #define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh) #define isp_video_queue_to_isp_video_fh(q) \ container_of(q, struct isp_video_fh, queue) int omap3isp_video_init(struct isp_video *video, const char *name); void omap3isp_video_cleanup(struct isp_video *video); int omap3isp_video_register(struct isp_video *video, struct v4l2_device *vdev); void omap3isp_video_unregister(struct isp_video *video); struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video, unsigned int error); void omap3isp_video_resume(struct isp_video *video, int continuous); struct media_pad *omap3isp_video_remote_pad(struct isp_video *video); const struct isp_format_info * omap3isp_video_format_info(enum v4l2_mbus_pixelcode code); #endif /* OMAP3_ISP_VIDEO_H */