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/*
* Copyright (C) 2008-2009 Texas Instruments Inc
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _VPFE_CAPTURE_H
#define _VPFE_CAPTURE_H
#ifdef __KERNEL__
/* Header files */
#include <media/v4l2-dev.h>
#include <linux/videodev2.h>
#include <linux/clk.h>
#include <linux/i2c.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <media/videobuf-dma-contig.h>
#include <media/davinci/vpfe_types.h>
#define VPFE_CAPTURE_NUM_DECODERS 5
/* Macros */
#define VPFE_MAJOR_RELEASE 0
#define VPFE_MINOR_RELEASE 0
#define VPFE_BUILD 1
#define VPFE_CAPTURE_VERSION_CODE ((VPFE_MAJOR_RELEASE << 16) | \
(VPFE_MINOR_RELEASE << 8) | \
VPFE_BUILD)
#define CAPTURE_DRV_NAME "vpfe-capture"
struct vpfe_pixel_format {
struct v4l2_fmtdesc fmtdesc;
/* bytes per pixel */
int bpp;
};
struct vpfe_std_info {
int active_pixels;
int active_lines;
/* current frame format */
int frame_format;
};
struct vpfe_route {
u32 input;
u32 output;
};
struct vpfe_subdev_info {
/* Sub device name */
char name[32];
/* Sub device group id */
int grp_id;
/* Number of inputs supported */
int num_inputs;
/* inputs available at the sub device */
struct v4l2_input *inputs;
/* Sub dev routing information for each input */
struct vpfe_route *routes;
/* check if sub dev supports routing */
int can_route;
/* ccdc bus/interface configuration */
struct vpfe_hw_if_param ccdc_if_params;
/* i2c subdevice board info */
struct i2c_board_info board_info;
};
struct vpfe_config {
/* Number of sub devices connected to vpfe */
int num_subdevs;
/* information about each subdev */
struct vpfe_subdev_info *sub_devs;
/* evm card info */
char *card_name;
/* ccdc name */
char *ccdc;
/* vpfe clock */
struct clk *vpssclk;
struct clk *slaveclk;
};
struct vpfe_device {
/* V4l2 specific parameters */
/* Identifies video device for this channel */
struct video_device *video_dev;
/* sub devices */
struct v4l2_subdev **sd;
/* vpfe cfg */
struct vpfe_config *cfg;
/* V4l2 device */
struct v4l2_device v4l2_dev;
/* parent device */
struct device *pdev;
/* Used to keep track of state of the priority */
struct v4l2_prio_state prio;
/* number of open instances of the channel */
u32 usrs;
/* Indicates id of the field which is being displayed */
u32 field_id;
/* flag to indicate whether decoder is initialized */
u8 initialized;
/* current interface type */
struct vpfe_hw_if_param vpfe_if_params;
/* ptr to currently selected sub device */
struct vpfe_subdev_info *current_subdev;
/* current input at the sub device */
int current_input;
/* Keeps track of the information about the standard */
struct vpfe_std_info std_info;
/* std index into std table */
int std_index;
/* CCDC IRQs used when CCDC/ISIF output to SDRAM */
unsigned int ccdc_irq0;
unsigned int ccdc_irq1;
/* number of buffers in fbuffers */
u32 numbuffers;
/* List of buffer pointers for storing frames */
u8 *fbuffers[VIDEO_MAX_FRAME];
/* Pointer pointing to current v4l2_buffer */
struct videobuf_buffer *cur_frm;
/* Pointer pointing to next v4l2_buffer */
struct videobuf_buffer *next_frm;
/*
* This field keeps track of type of buffer exchange mechanism
* user has selected
*/
enum v4l2_memory memory;
/* Used to store pixel format */
struct v4l2_format fmt;
/*
* used when IMP is chained to store the crop window which
* is different from the image window
*/
struct v4l2_rect crop;
/* Buffer queue used in video-buf */
struct videobuf_queue buffer_queue;
/* Queue of filled frames */
struct list_head dma_queue;
/* Used in video-buf */
spinlock_t irqlock;
/* IRQ lock for DMA queue */
spinlock_t dma_queue_lock;
/* lock used to access this structure */
struct mutex lock;
/* number of users performing IO */
u32 io_usrs;
/* Indicates whether streaming started */
u8 started;
/*
* offset where second field starts from the starting of the
* buffer for field seperated YCbCr formats
*/
u32 field_off;
};
/* File handle structure */
struct vpfe_fh {
struct vpfe_device *vpfe_dev;
/* Indicates whether this file handle is doing IO */
u8 io_allowed;
/* Used to keep track priority of this instance */
enum v4l2_priority prio;
};
struct vpfe_config_params {
u8 min_numbuffers;
u8 numbuffers;
u32 min_bufsize;
u32 device_bufsize;
};
#endif /* End of __KERNEL__ */
/**
* VPFE_CMD_S_CCDC_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params
* This can be used to configure modules such as defect pixel correction,
* color space conversion, culling etc. This is an experimental ioctl that
* will change in future kernels. So use this ioctl with care !
* TODO: This is to be split into multiple ioctls and also explore the
* possibility of extending the v4l2 api to include this
**/
#define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
void *)
#endif /* _DAVINCI_VPFE_H */
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