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-fh.h>
30#include <media/v4l2-ioctl.h>
31#include <media/v4l2-device.h>
32#include <media/videobuf-dma-contig.h>
33#include <media/davinci/vpfe_types.h>
34
35#define VPFE_CAPTURE_NUM_DECODERS        5
36
37/* Macros */
38#define VPFE_MAJOR_RELEASE              0
39#define VPFE_MINOR_RELEASE              0
40#define VPFE_BUILD                      1
41#define VPFE_CAPTURE_VERSION_CODE       ((VPFE_MAJOR_RELEASE << 16) | \
42					(VPFE_MINOR_RELEASE << 8)  | \
43					VPFE_BUILD)
44
45#define CAPTURE_DRV_NAME		"vpfe-capture"
46
47struct vpfe_pixel_format {
48	struct v4l2_fmtdesc fmtdesc;
49	/* bytes per pixel */
50	int bpp;
51};
52
53struct vpfe_std_info {
54	int active_pixels;
55	int active_lines;
56	/* current frame format */
57	int frame_format;
58};
59
60struct vpfe_route {
61	u32 input;
62	u32 output;
63};
64
65struct vpfe_subdev_info {
66	/* Sub device name */
67	char name[32];
68	/* Sub device group id */
69	int grp_id;
70	/* Number of inputs supported */
71	int num_inputs;
72	/* inputs available at the sub device */
73	struct v4l2_input *inputs;
74	/* Sub dev routing information for each input */
75	struct vpfe_route *routes;
76	/* check if sub dev supports routing */
77	int can_route;
78	/* ccdc bus/interface configuration */
79	struct vpfe_hw_if_param ccdc_if_params;
80	/* i2c subdevice board info */
81	struct i2c_board_info board_info;
82};
83
84struct vpfe_config {
85	/* Number of sub devices connected to vpfe */
86	int num_subdevs;
87	/* i2c bus adapter no */
88	int i2c_adapter_id;
89	/* information about each subdev */
90	struct vpfe_subdev_info *sub_devs;
91	/* evm card info */
92	char *card_name;
93	/* ccdc name */
94	char *ccdc;
95	/* vpfe clock */
96	struct clk *vpssclk;
97	struct clk *slaveclk;
98	/* Function for Clearing the interrupt */
99	void (*clr_intr)(int vdint);
100};
101
102struct vpfe_device {
103	/* V4l2 specific parameters */
104	/* Identifies video device for this channel */
105	struct video_device video_dev;
106	/* sub devices */
107	struct v4l2_subdev **sd;
108	/* vpfe cfg */
109	struct vpfe_config *cfg;
110	/* V4l2 device */
111	struct v4l2_device v4l2_dev;
112	/* parent device */
113	struct device *pdev;
114	/* number of open instances of the channel */
115	u32 usrs;
116	/* Indicates id of the field which is being displayed */
117	u32 field_id;
118	/* flag to indicate whether decoder is initialized */
119	u8 initialized;
120	/* current interface type */
121	struct vpfe_hw_if_param vpfe_if_params;
122	/* ptr to currently selected sub device */
123	struct vpfe_subdev_info *current_subdev;
124	/* current input at the sub device */
125	int current_input;
126	/* Keeps track of the information about the standard */
127	struct vpfe_std_info std_info;
128	/* std index into std table */
129	int std_index;
130	/* CCDC IRQs used when CCDC/ISIF output to SDRAM */
131	unsigned int ccdc_irq0;
132	unsigned int ccdc_irq1;
133	/* number of buffers in fbuffers */
134	u32 numbuffers;
135	/* List of buffer pointers for storing frames */
136	u8 *fbuffers[VIDEO_MAX_FRAME];
137	/* Pointer pointing to current v4l2_buffer */
138	struct videobuf_buffer *cur_frm;
139	/* Pointer pointing to next v4l2_buffer */
140	struct videobuf_buffer *next_frm;
141	/*
142	 * This field keeps track of type of buffer exchange mechanism
143	 * user has selected
144	 */
145	enum v4l2_memory memory;
146	/* Used to store pixel format */
147	struct v4l2_format fmt;
148	/*
149	 * used when IMP is chained to store the crop window which
150	 * is different from the image window
151	 */
152	struct v4l2_rect crop;
153	/* Buffer queue used in video-buf */
154	struct videobuf_queue buffer_queue;
155	/* Queue of filled frames */
156	struct list_head dma_queue;
157	/* Used in video-buf */
158	spinlock_t irqlock;
159	/* IRQ lock for DMA queue */
160	spinlock_t dma_queue_lock;
161	/* lock used to access this structure */
162	struct mutex lock;
163	/* number of users performing IO */
164	u32 io_usrs;
165	/* Indicates whether streaming started */
166	u8 started;
167	/*
168	 * offset where second field starts from the starting of the
169	 * buffer for field separated YCbCr formats
170	 */
171	u32 field_off;
172};
173
174/* File handle structure */
175struct vpfe_fh {
176	struct v4l2_fh fh;
177	struct vpfe_device *vpfe_dev;
178	/* Indicates whether this file handle is doing IO */
179	u8 io_allowed;
180};
181
182struct vpfe_config_params {
183	u8 min_numbuffers;
184	u8 numbuffers;
185	u32 min_bufsize;
186	u32 device_bufsize;
187};
188
189#endif				/* End of __KERNEL__ */
190/**
191 * VPFE_CMD_S_CCDC_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params
192 * This can be used to configure modules such as defect pixel correction,
193 * color space conversion, culling etc. This is an experimental ioctl that
194 * will change in future kernels. So use this ioctl with care !
195 * TODO: This is to be split into multiple ioctls and also explore the
196 * possibility of extending the v4l2 api to include this
197 **/
198#define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
199					void *)
200#endif				/* _DAVINCI_VPFE_H */
201