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1/*
2 * Copyright (C) 2008-2009 Texas Instruments Inc
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19#ifndef _VPFE_CAPTURE_H
20#define _VPFE_CAPTURE_H
21
22#ifdef __KERNEL__
23
24/* Header files */
25#include <media/v4l2-dev.h>
26#include <linux/videodev2.h>
27#include <linux/clk.h>
28#include <linux/i2c.h>
29#include <media/v4l2-ioctl.h>
30#include <media/v4l2-device.h>
31#include <media/videobuf-dma-contig.h>
32#include <media/davinci/vpfe_types.h>
33
34#define VPFE_CAPTURE_NUM_DECODERS 5
35
36/* Macros */
37#define VPFE_MAJOR_RELEASE 0
38#define VPFE_MINOR_RELEASE 0
39#define VPFE_BUILD 1
40#define VPFE_CAPTURE_VERSION_CODE ((VPFE_MAJOR_RELEASE << 16) | \
41 (VPFE_MINOR_RELEASE << 8) | \
42 VPFE_BUILD)
43
44#define CAPTURE_DRV_NAME "vpfe-capture"
45
46struct vpfe_pixel_format {
47 struct v4l2_fmtdesc fmtdesc;
48 /* bytes per pixel */
49 int bpp;
50};
51
52struct vpfe_std_info {
53 int active_pixels;
54 int active_lines;
55 /* current frame format */
56 int frame_format;
57};
58
59struct vpfe_route {
60 u32 input;
61 u32 output;
62};
63
64struct vpfe_subdev_info {
65 /* Sub device name */
66 char name[32];
67 /* Sub device group id */
68 int grp_id;
69 /* Number of inputs supported */
70 int num_inputs;
71 /* inputs available at the sub device */
72 struct v4l2_input *inputs;
73 /* Sub dev routing information for each input */
74 struct vpfe_route *routes;
75 /* check if sub dev supports routing */
76 int can_route;
77 /* ccdc bus/interface configuration */
78 struct vpfe_hw_if_param ccdc_if_params;
79 /* i2c subdevice board info */
80 struct i2c_board_info board_info;
81};
82
83struct vpfe_config {
84 /* Number of sub devices connected to vpfe */
85 int num_subdevs;
86 /* information about each subdev */
87 struct vpfe_subdev_info *sub_devs;
88 /* evm card info */
89 char *card_name;
90 /* ccdc name */
91 char *ccdc;
92 /* vpfe clock */
93 struct clk *vpssclk;
94 struct clk *slaveclk;
95};
96
97struct vpfe_device {
98 /* V4l2 specific parameters */
99 /* Identifies video device for this channel */
100 struct video_device *video_dev;
101 /* sub devices */
102 struct v4l2_subdev **sd;
103 /* vpfe cfg */
104 struct vpfe_config *cfg;
105 /* V4l2 device */
106 struct v4l2_device v4l2_dev;
107 /* parent device */
108 struct device *pdev;
109 /* Used to keep track of state of the priority */
110 struct v4l2_prio_state prio;
111 /* number of open instances of the channel */
112 u32 usrs;
113 /* Indicates id of the field which is being displayed */
114 u32 field_id;
115 /* flag to indicate whether decoder is initialized */
116 u8 initialized;
117 /* current interface type */
118 struct vpfe_hw_if_param vpfe_if_params;
119 /* ptr to currently selected sub device */
120 struct vpfe_subdev_info *current_subdev;
121 /* current input at the sub device */
122 int current_input;
123 /* Keeps track of the information about the standard */
124 struct vpfe_std_info std_info;
125 /* std index into std table */
126 int std_index;
127 /* CCDC IRQs used when CCDC/ISIF output to SDRAM */
128 unsigned int ccdc_irq0;
129 unsigned int ccdc_irq1;
130 /* number of buffers in fbuffers */
131 u32 numbuffers;
132 /* List of buffer pointers for storing frames */
133 u8 *fbuffers[VIDEO_MAX_FRAME];
134 /* Pointer pointing to current v4l2_buffer */
135 struct videobuf_buffer *cur_frm;
136 /* Pointer pointing to next v4l2_buffer */
137 struct videobuf_buffer *next_frm;
138 /*
139 * This field keeps track of type of buffer exchange mechanism
140 * user has selected
141 */
142 enum v4l2_memory memory;
143 /* Used to store pixel format */
144 struct v4l2_format fmt;
145 /*
146 * used when IMP is chained to store the crop window which
147 * is different from the image window
148 */
149 struct v4l2_rect crop;
150 /* Buffer queue used in video-buf */
151 struct videobuf_queue buffer_queue;
152 /* Queue of filled frames */
153 struct list_head dma_queue;
154 /* Used in video-buf */
155 spinlock_t irqlock;
156 /* IRQ lock for DMA queue */
157 spinlock_t dma_queue_lock;
158 /* lock used to access this structure */
159 struct mutex lock;
160 /* number of users performing IO */
161 u32 io_usrs;
162 /* Indicates whether streaming started */
163 u8 started;
164 /*
165 * offset where second field starts from the starting of the
166 * buffer for field seperated YCbCr formats
167 */
168 u32 field_off;
169};
170
171/* File handle structure */
172struct vpfe_fh {
173 struct vpfe_device *vpfe_dev;
174 /* Indicates whether this file handle is doing IO */
175 u8 io_allowed;
176 /* Used to keep track priority of this instance */
177 enum v4l2_priority prio;
178};
179
180struct vpfe_config_params {
181 u8 min_numbuffers;
182 u8 numbuffers;
183 u32 min_bufsize;
184 u32 device_bufsize;
185};
186
187#endif /* End of __KERNEL__ */
188/**
189 * VPFE_CMD_S_CCDC_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params
190 * This can be used to configure modules such as defect pixel correction,
191 * color space conversion, culling etc. This is an experimental ioctl that
192 * will change in future kernels. So use this ioctl with care !
193 * TODO: This is to be split into multiple ioctls and also explore the
194 * possibility of extending the v4l2 api to include this
195 **/
196#define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
197 void *)
198#endif /* _DAVINCI_VPFE_H */