vpfe_capture.h

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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;
    /* i2c bus adapter no */
    int i2c_adapter_id;
    /* 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;
    /* Function for Clearing the interrupt */
    void (*clr_intr)(int vdint);
};

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 separated 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__ */

#define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
                    void *)
#endif              /* _DAVINCI_VPFE_H */