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V4L/DVB (12176): davinci/vpif_display: Add VPIF display driver

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Adds the VPIF display driver and the associated header file.

Signed-off-by: Manjunath Hadli <mrh@ti.com>
Signed-off-by: Brijesh Jadav <brijesh.j@ti.com>
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Chaithrika U S 2009-06-09 05:55:37 -03:00 committed by Mauro Carvalho Chehab
parent 63a8e71c44
commit e7332e3a55
2 changed files with 1839 additions and 0 deletions
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1664
drivers/media/video/davinci/vpif_display.c Normal file
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drivers/media/video/davinci/vpif_display.h Normal file
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/*
* DM646x display header file
*
* Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
*
* 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 version 2.
*
* This program is distributed .as is. WITHOUT ANY WARRANTY of any
* kind, whether express or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef DAVINCIHD_DISPLAY_H
#define DAVINCIHD_DISPLAY_H
/* Header files */
#include <linux/videodev2.h>
#include <linux/version.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/videobuf-core.h>
#include <media/videobuf-dma-contig.h>
#include "vpif.h"
/* Macros */
#define VPIF_MAJOR_RELEASE (0)
#define VPIF_MINOR_RELEASE (0)
#define VPIF_BUILD (1)
#define VPIF_DISPLAY_VERSION_CODE \
((VPIF_MAJOR_RELEASE << 16) | (VPIF_MINOR_RELEASE << 8) | VPIF_BUILD)
#define VPIF_VALID_FIELD(field) \
(((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \
(((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \
(V4L2_FIELD_SEQ_BT == field)))
#define VPIF_DISPLAY_MAX_DEVICES (2)
#define VPIF_SLICED_BUF_SIZE (256)
#define VPIF_SLICED_MAX_SERVICES (3)
#define VPIF_VIDEO_INDEX (0)
#define VPIF_VBI_INDEX (1)
#define VPIF_HBI_INDEX (2)
/* Setting it to 1 as HBI/VBI support yet to be added , else 3*/
#define VPIF_NUMOBJECTS (1)
/* Macros */
#define ISALIGNED(a) (0 == ((a) & 7))
/* enumerated data types */
/* Enumerated data type to give id to each device per channel */
enum vpif_channel_id {
VPIF_CHANNEL2_VIDEO = 0, /* Channel2 Video */
VPIF_CHANNEL3_VIDEO, /* Channel3 Video */
};
/* structures */
struct video_obj {
enum v4l2_field buf_field;
u32 latest_only; /* indicate whether to return
* most recent displayed frame only */
v4l2_std_id stdid; /* Currently selected or default
* standard */
u32 output_id; /* Current output id */
};
struct vbi_obj {
int num_services;
struct vpif_vbi_params vbiparams; /* vpif parameters for the raw
* vbi data */
};
struct common_obj {
/* Buffer specific parameters */
u8 *fbuffers[VIDEO_MAX_FRAME]; /* List of buffer pointers for
* storing frames */
u32 numbuffers; /* number of buffers */
struct videobuf_buffer *cur_frm; /* Pointer pointing to current
* videobuf_buffer */
struct videobuf_buffer *next_frm; /* Pointer pointing to next
* videobuf_buffer */
enum v4l2_memory memory; /* This field keeps track of
* type of buffer exchange
* method user has selected */
struct v4l2_format fmt; /* Used to store the format */
struct videobuf_queue buffer_queue; /* Buffer queue used in
* video-buf */
struct list_head dma_queue; /* Queue of filled frames */
spinlock_t irqlock; /* Used in video-buf */
/* channel specific parameters */
struct mutex lock; /* lock used to access this
* structure */
u32 io_usrs; /* number of users performing
* IO */
u8 started; /* Indicates whether streaming
* started */
u32 ytop_off; /* offset of Y top from the
* starting of the buffer */
u32 ybtm_off; /* offset of Y bottom from the
* starting of the buffer */
u32 ctop_off; /* offset of C top from the
* starting of the buffer */
u32 cbtm_off; /* offset of C bottom from the
* starting of the buffer */
/* Function pointer to set the addresses */
void (*set_addr) (unsigned long, unsigned long,
unsigned long, unsigned long);
u32 height;
u32 width;
};
struct channel_obj {
/* V4l2 specific parameters */
struct video_device *video_dev; /* Identifies video device for
* this channel */
struct v4l2_prio_state prio; /* Used to keep track of state of
* the priority */
atomic_t usrs; /* number of open instances of
* the channel */
u32 field_id; /* Indicates id of the field
* which is being displayed */
u8 initialized; /* flag to indicate whether
* encoder is initialized */
enum vpif_channel_id channel_id;/* Identifies channel */
struct vpif_params vpifparams;
struct common_obj common[VPIF_NUMOBJECTS];
struct video_obj video;
struct vbi_obj vbi;
};
/* File handle structure */
struct vpif_fh {
struct channel_obj *channel; /* pointer to channel object for
* opened device */
u8 io_allowed[VPIF_NUMOBJECTS]; /* Indicates whether this file handle
* is doing IO */
enum v4l2_priority prio; /* Used to keep track priority of
* this instance */
u8 initialized; /* Used to keep track of whether this
* file handle has initialized
* channel or not */
};
/* vpif device structure */
struct vpif_device {
struct v4l2_device v4l2_dev;
struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS];
struct v4l2_subdev **sd;
};
struct vpif_config_params {
u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS];
u8 min_numbuffers;
};
/* Struct which keeps track of the line numbers for the sliced vbi service */
struct vpif_service_line {
u16 service_id;
u16 service_line[2];
u16 enc_service_id;
u8 bytestowrite;
};
#endif /* DAVINCIHD_DISPLAY_H */