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review.evervolv.com / android_kernel_htc_msm8960 / b16db745b51a1ecd3fd526a2ff35d61f2962bd7f / . / include / media / davinci / vpbe_display.h
blob: dbf6b37682cd1c70f40b4bd06b8f99dc375527f0 [file] [log] [blame]
Manjunath Hadlia2c25b42011-06-17 04:01:31 -0300[diff] [blame]1/*
2 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation version 2.
7 *
8 * This program is distributed WITHOUT ANY WARRANTY of any
9 * kind, whether express or implied; without even the implied warranty
10 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 */
13#ifndef VPBE_DISPLAY_H
14#define VPBE_DISPLAY_H
15
16/* Header files */
17#include <linux/videodev2.h>
18#include <media/v4l2-common.h>
19#include <media/videobuf-dma-contig.h>
20#include <media/davinci/vpbe_types.h>
21#include <media/davinci/vpbe_osd.h>
22#include <media/davinci/vpbe.h>
23
24#define VPBE_DISPLAY_MAX_DEVICES 2
25
26enum vpbe_display_device_id {
27 VPBE_DISPLAY_DEVICE_0,
28 VPBE_DISPLAY_DEVICE_1
29};
30
31#define VPBE_DISPLAY_DRV_NAME "vpbe-display"
32
33#define VPBE_DISPLAY_MAJOR_RELEASE 1
34#define VPBE_DISPLAY_MINOR_RELEASE 0
35#define VPBE_DISPLAY_BUILD 1
36#define VPBE_DISPLAY_VERSION_CODE ((VPBE_DISPLAY_MAJOR_RELEASE << 16) | \
37 (VPBE_DISPLAY_MINOR_RELEASE << 8) | \
38 VPBE_DISPLAY_BUILD)
39
40#define VPBE_DISPLAY_VALID_FIELD(field) ((V4L2_FIELD_NONE == field) || \
41 (V4L2_FIELD_ANY == field) || (V4L2_FIELD_INTERLACED == field))
42
43/* Exp ratio numerator and denominator constants */
44#define VPBE_DISPLAY_H_EXP_RATIO_N 9
45#define VPBE_DISPLAY_H_EXP_RATIO_D 8
46#define VPBE_DISPLAY_V_EXP_RATIO_N 6
47#define VPBE_DISPLAY_V_EXP_RATIO_D 5
48
49/* Zoom multiplication factor */
50#define VPBE_DISPLAY_ZOOM_4X 4
51#define VPBE_DISPLAY_ZOOM_2X 2
52
53/* Structures */
54struct display_layer_info {
55 int enable;
56 /* Layer ID used by Display Manager */
57 enum osd_layer id;
58 struct osd_layer_config config;
59 enum osd_zoom_factor h_zoom;
60 enum osd_zoom_factor v_zoom;
61 enum osd_h_exp_ratio h_exp;
62 enum osd_v_exp_ratio v_exp;
63};
64
65/* vpbe display object structure */
66struct vpbe_layer {
67 /* number of buffers in fbuffers */
68 unsigned int numbuffers;
69 /* Pointer to the vpbe_display */
70 struct vpbe_display *disp_dev;
71 /* Pointer pointing to current v4l2_buffer */
72 struct videobuf_buffer *cur_frm;
73 /* Pointer pointing to next v4l2_buffer */
74 struct videobuf_buffer *next_frm;
75 /* videobuf specific parameters
76 * Buffer queue used in video-buf
77 */
78 struct videobuf_queue buffer_queue;
79 /* Queue of filled frames */
80 struct list_head dma_queue;
81 /* Used in video-buf */
82 spinlock_t irqlock;
83 /* V4l2 specific parameters */
84 /* Identifies video device for this layer */
85 struct video_device video_dev;
86 /* This field keeps track of type of buffer exchange mechanism user
87 * has selected
88 */
89 enum v4l2_memory memory;
90 /* Used to keep track of state of the priority */
91 struct v4l2_prio_state prio;
92 /* Used to store pixel format */
93 struct v4l2_pix_format pix_fmt;
94 enum v4l2_field buf_field;
95 /* Video layer configuration params */
96 struct display_layer_info layer_info;
97 /* vpbe specific parameters
98 * enable window for display
99 */
100 unsigned char window_enable;
101 /* number of open instances of the layer */
102 unsigned int usrs;
103 /* number of users performing IO */
104 unsigned int io_usrs;
105 /* Indicates id of the field which is being displayed */
106 unsigned int field_id;
107 /* Indicates whether streaming started */
108 unsigned char started;
109 /* Identifies device object */
110 enum vpbe_display_device_id device_id;
111 /* facilitation of ioctl ops lock by v4l2*/
112 struct mutex opslock;
113 u8 layer_first_int;
114};
115
116/* vpbe device structure */
117struct vpbe_display {
118 /* layer specific parameters */
119 /* lock for isr updates to buf layers*/
120 spinlock_t dma_queue_lock;
121 /* C-Plane offset from start of y-plane */
122 unsigned int cbcr_ofst;
123 struct vpbe_layer *dev[VPBE_DISPLAY_MAX_DEVICES];
124 struct vpbe_device *vpbe_dev;
125 struct osd_state *osd_device;
126};
127
128/* File handle structure */
129struct vpbe_fh {
130 /* vpbe device structure */
131 struct vpbe_display *disp_dev;
132 /* pointer to layer object for opened device */
133 struct vpbe_layer *layer;
134 /* Indicates whether this file handle is doing IO */
135 unsigned char io_allowed;
136 /* Used to keep track priority of this instance */
137 enum v4l2_priority prio;
138};
139
140struct buf_config_params {
141 unsigned char min_numbuffers;
142 unsigned char numbuffers[VPBE_DISPLAY_MAX_DEVICES];
143 unsigned int min_bufsize[VPBE_DISPLAY_MAX_DEVICES];
144 unsigned int layer_bufsize[VPBE_DISPLAY_MAX_DEVICES];
145};
146
147#endif /* VPBE_DISPLAY_H */