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/*
* Copyright (C) 2010 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 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 VPBE_DISPLAY_H
#define VPBE_DISPLAY_H
/* Header files */
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/videobuf2-dma-contig.h>
#include <media/davinci/vpbe_types.h>
#include <media/davinci/vpbe_osd.h>
#include <media/davinci/vpbe.h>
#define VPBE_DISPLAY_MAX_DEVICES 2
enum vpbe_display_device_id {
VPBE_DISPLAY_DEVICE_0,
VPBE_DISPLAY_DEVICE_1
};
#define VPBE_DISPLAY_DRV_NAME "vpbe-display"
#define VPBE_DISPLAY_MAJOR_RELEASE 1
#define VPBE_DISPLAY_MINOR_RELEASE 0
#define VPBE_DISPLAY_BUILD 1
#define VPBE_DISPLAY_VERSION_CODE ((VPBE_DISPLAY_MAJOR_RELEASE << 16) | \
(VPBE_DISPLAY_MINOR_RELEASE << 8) | \
VPBE_DISPLAY_BUILD)
#define VPBE_DISPLAY_VALID_FIELD(field) ((V4L2_FIELD_NONE == field) || \
(V4L2_FIELD_ANY == field) || (V4L2_FIELD_INTERLACED == field))
/* Exp ratio numerator and denominator constants */
#define VPBE_DISPLAY_H_EXP_RATIO_N 9
#define VPBE_DISPLAY_H_EXP_RATIO_D 8
#define VPBE_DISPLAY_V_EXP_RATIO_N 6
#define VPBE_DISPLAY_V_EXP_RATIO_D 5
/* Zoom multiplication factor */
#define VPBE_DISPLAY_ZOOM_4X 4
#define VPBE_DISPLAY_ZOOM_2X 2
/* Structures */
struct display_layer_info {
int enable;
/* Layer ID used by Display Manager */
enum osd_layer id;
struct osd_layer_config config;
enum osd_zoom_factor h_zoom;
enum osd_zoom_factor v_zoom;
enum osd_h_exp_ratio h_exp;
enum osd_v_exp_ratio v_exp;
};
struct vpbe_disp_buffer {
struct vb2_buffer vb;
struct list_head list;
};
/* vpbe display object structure */
struct vpbe_layer {
/* number of buffers in fbuffers */
unsigned int numbuffers;
/* Pointer to the vpbe_display */
struct vpbe_display *disp_dev;
/* Pointer pointing to current v4l2_buffer */
struct vpbe_disp_buffer *cur_frm;
/* Pointer pointing to next v4l2_buffer */
struct vpbe_disp_buffer *next_frm;
/* videobuf specific parameters
* Buffer queue used in video-buf
*/
struct vb2_queue buffer_queue;
/* allocator-specific contexts for each plane */
struct vb2_alloc_ctx *alloc_ctx;
/* Queue of filled frames */
struct list_head dma_queue;
/* Used in video-buf */
spinlock_t irqlock;
/* V4l2 specific parameters */
/* Identifies video device for this layer */
struct video_device video_dev;
/* This field keeps track of type of buffer exchange mechanism user
* has selected
*/
enum v4l2_memory memory;
/* Used to keep track of state of the priority */
struct v4l2_prio_state prio;
/* Used to store pixel format */
struct v4l2_pix_format pix_fmt;
enum v4l2_field buf_field;
/* Video layer configuration params */
struct display_layer_info layer_info;
/* vpbe specific parameters
* enable window for display
*/
unsigned char window_enable;
/* number of open instances of the layer */
unsigned int usrs;
/* number of users performing IO */
unsigned int io_usrs;
/* Indicates id of the field which is being displayed */
unsigned int field_id;
/* Indicates whether streaming started */
unsigned char started;
/* Identifies device object */
enum vpbe_display_device_id device_id;
/* facilitation of ioctl ops lock by v4l2*/
struct mutex opslock;
u8 layer_first_int;
};
/* vpbe device structure */
struct vpbe_display {
/* layer specific parameters */
/* lock for isr updates to buf layers*/
spinlock_t dma_queue_lock;
/* C-Plane offset from start of y-plane */
unsigned int cbcr_ofst;
struct vpbe_layer *dev[VPBE_DISPLAY_MAX_DEVICES];
struct vpbe_device *vpbe_dev;
struct osd_state *osd_device;
};
/* File handle structure */
struct vpbe_fh {
/* vpbe device structure */
struct vpbe_display *disp_dev;
/* pointer to layer object for opened device */
struct vpbe_layer *layer;
/* Indicates whether this file handle is doing IO */
unsigned char io_allowed;
/* Used to keep track priority of this instance */
enum v4l2_priority prio;
};
struct buf_config_params {
unsigned char min_numbuffers;
unsigned char numbuffers[VPBE_DISPLAY_MAX_DEVICES];
unsigned int min_bufsize[VPBE_DISPLAY_MAX_DEVICES];
unsigned int layer_bufsize[VPBE_DISPLAY_MAX_DEVICES];
};
#endif /* VPBE_DISPLAY_H */