V4L/DVB (12248): v4l: vpfe capture bridge driver for DM355 and DM6446

/*

 * 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 */

/*

 * 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_TYPES_H

#define _VPFE_TYPES_H

#ifdef __KERNEL__

enum vpfe_pin_pol {

	VPFE_PINPOL_POSITIVE,

	VPFE_PINPOL_NEGATIVE

};

enum vpfe_hw_if_type {

	/* BT656 - 8 bit */

	VPFE_BT656,

	/* BT1120 - 16 bit */

	VPFE_BT1120,

	/* Raw Bayer */

	VPFE_RAW_BAYER,

	/* YCbCr - 8 bit with external sync */

	VPFE_YCBCR_SYNC_8,

	/* YCbCr - 16 bit with external sync */

	VPFE_YCBCR_SYNC_16,

	/* BT656 - 10 bit */

	VPFE_BT656_10BIT

};

/* interface description */

struct vpfe_hw_if_param {

	enum vpfe_hw_if_type if_type;

	enum vpfe_pin_pol hdpol;

	enum vpfe_pin_pol vdpol;

};

#endif

#endif