13fc23d306
This patch migrates VPBE display driver to videobuf2 framework. Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com> Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
154 lines
4.5 KiB
C
154 lines
4.5 KiB
C
/*
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* Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef VPBE_DISPLAY_H
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#define VPBE_DISPLAY_H
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/* Header files */
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#include <linux/videodev2.h>
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#include <media/v4l2-common.h>
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#include <media/videobuf2-dma-contig.h>
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#include <media/davinci/vpbe_types.h>
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#include <media/davinci/vpbe_osd.h>
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#include <media/davinci/vpbe.h>
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#define VPBE_DISPLAY_MAX_DEVICES 2
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enum vpbe_display_device_id {
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VPBE_DISPLAY_DEVICE_0,
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VPBE_DISPLAY_DEVICE_1
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};
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#define VPBE_DISPLAY_DRV_NAME "vpbe-display"
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#define VPBE_DISPLAY_MAJOR_RELEASE 1
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#define VPBE_DISPLAY_MINOR_RELEASE 0
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#define VPBE_DISPLAY_BUILD 1
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#define VPBE_DISPLAY_VERSION_CODE ((VPBE_DISPLAY_MAJOR_RELEASE << 16) | \
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(VPBE_DISPLAY_MINOR_RELEASE << 8) | \
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VPBE_DISPLAY_BUILD)
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#define VPBE_DISPLAY_VALID_FIELD(field) ((V4L2_FIELD_NONE == field) || \
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(V4L2_FIELD_ANY == field) || (V4L2_FIELD_INTERLACED == field))
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/* Exp ratio numerator and denominator constants */
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#define VPBE_DISPLAY_H_EXP_RATIO_N 9
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#define VPBE_DISPLAY_H_EXP_RATIO_D 8
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#define VPBE_DISPLAY_V_EXP_RATIO_N 6
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#define VPBE_DISPLAY_V_EXP_RATIO_D 5
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/* Zoom multiplication factor */
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#define VPBE_DISPLAY_ZOOM_4X 4
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#define VPBE_DISPLAY_ZOOM_2X 2
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/* Structures */
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struct display_layer_info {
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int enable;
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/* Layer ID used by Display Manager */
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enum osd_layer id;
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struct osd_layer_config config;
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enum osd_zoom_factor h_zoom;
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enum osd_zoom_factor v_zoom;
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enum osd_h_exp_ratio h_exp;
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enum osd_v_exp_ratio v_exp;
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};
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struct vpbe_disp_buffer {
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struct vb2_buffer vb;
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struct list_head list;
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};
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/* vpbe display object structure */
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struct vpbe_layer {
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/* number of buffers in fbuffers */
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unsigned int numbuffers;
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/* Pointer to the vpbe_display */
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struct vpbe_display *disp_dev;
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/* Pointer pointing to current v4l2_buffer */
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struct vpbe_disp_buffer *cur_frm;
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/* Pointer pointing to next v4l2_buffer */
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struct vpbe_disp_buffer *next_frm;
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/* videobuf specific parameters
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* Buffer queue used in video-buf
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*/
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struct vb2_queue buffer_queue;
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/* allocator-specific contexts for each plane */
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struct vb2_alloc_ctx *alloc_ctx;
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/* Queue of filled frames */
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struct list_head dma_queue;
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/* Used in video-buf */
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spinlock_t irqlock;
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/* V4l2 specific parameters */
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/* Identifies video device for this layer */
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struct video_device video_dev;
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/* This field keeps track of type of buffer exchange mechanism user
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* has selected
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*/
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enum v4l2_memory memory;
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/* Used to keep track of state of the priority */
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struct v4l2_prio_state prio;
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/* Used to store pixel format */
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struct v4l2_pix_format pix_fmt;
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enum v4l2_field buf_field;
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/* Video layer configuration params */
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struct display_layer_info layer_info;
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/* vpbe specific parameters
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* enable window for display
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*/
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unsigned char window_enable;
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/* number of open instances of the layer */
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unsigned int usrs;
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/* number of users performing IO */
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unsigned int io_usrs;
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/* Indicates id of the field which is being displayed */
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unsigned int field_id;
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/* Indicates whether streaming started */
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unsigned char started;
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/* Identifies device object */
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enum vpbe_display_device_id device_id;
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/* facilitation of ioctl ops lock by v4l2*/
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struct mutex opslock;
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u8 layer_first_int;
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};
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/* vpbe device structure */
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struct vpbe_display {
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/* layer specific parameters */
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/* lock for isr updates to buf layers*/
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spinlock_t dma_queue_lock;
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/* C-Plane offset from start of y-plane */
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unsigned int cbcr_ofst;
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struct vpbe_layer *dev[VPBE_DISPLAY_MAX_DEVICES];
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struct vpbe_device *vpbe_dev;
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struct osd_state *osd_device;
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};
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/* File handle structure */
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struct vpbe_fh {
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/* vpbe device structure */
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struct vpbe_display *disp_dev;
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/* pointer to layer object for opened device */
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struct vpbe_layer *layer;
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/* Indicates whether this file handle is doing IO */
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unsigned char io_allowed;
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/* Used to keep track priority of this instance */
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enum v4l2_priority prio;
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};
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struct buf_config_params {
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unsigned char min_numbuffers;
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unsigned char numbuffers[VPBE_DISPLAY_MAX_DEVICES];
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unsigned int min_bufsize[VPBE_DISPLAY_MAX_DEVICES];
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unsigned int layer_bufsize[VPBE_DISPLAY_MAX_DEVICES];
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};
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#endif /* VPBE_DISPLAY_H */
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