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	/* i2c bus adapter no */
87	int i2c_adapter_id;
88	/* information about each subdev */
89	struct vpfe_subdev_info *sub_devs;
90	/* evm card info */
91	char *card_name;
92	/* ccdc name */
93	char *ccdc;
94	/* vpfe clock */
95	struct clk *vpssclk;
96	struct clk *slaveclk;
97	/* Function for Clearing the interrupt */
98	void (*clr_intr)(int vdint);
99};
100
101struct vpfe_device {
102	/* V4l2 specific parameters */
103	/* Identifies video device for this channel */
104	struct video_device *video_dev;
105	/* sub devices */
106	struct v4l2_subdev **sd;
107	/* vpfe cfg */
108	struct vpfe_config *cfg;
109	/* V4l2 device */
110	struct v4l2_device v4l2_dev;
111	/* parent device */
112	struct device *pdev;
113	/* Used to keep track of state of the priority */
114	struct v4l2_prio_state prio;
115	/* number of open instances of the channel */
116	u32 usrs;
117	/* Indicates id of the field which is being displayed */
118	u32 field_id;
119	/* flag to indicate whether decoder is initialized */
120	u8 initialized;
121	/* current interface type */
122	struct vpfe_hw_if_param vpfe_if_params;
123	/* ptr to currently selected sub device */
124	struct vpfe_subdev_info *current_subdev;
125	/* current input at the sub device */
126	int current_input;
127	/* Keeps track of the information about the standard */
128	struct vpfe_std_info std_info;
129	/* std index into std table */
130	int std_index;
131	/* CCDC IRQs used when CCDC/ISIF output to SDRAM */
132	unsigned int ccdc_irq0;
133	unsigned int ccdc_irq1;
134	/* number of buffers in fbuffers */
135	u32 numbuffers;
136	/* List of buffer pointers for storing frames */
137	u8 *fbuffers[VIDEO_MAX_FRAME];
138	/* Pointer pointing to current v4l2_buffer */
139	struct videobuf_buffer *cur_frm;
140	/* Pointer pointing to next v4l2_buffer */
141	struct videobuf_buffer *next_frm;
142	/*
143	 * This field keeps track of type of buffer exchange mechanism
144	 * user has selected
145	 */
146	enum v4l2_memory memory;
147	/* Used to store pixel format */
148	struct v4l2_format fmt;
149	/*
150	 * used when IMP is chained to store the crop window which
151	 * is different from the image window
152	 */
153	struct v4l2_rect crop;
154	/* Buffer queue used in video-buf */
155	struct videobuf_queue buffer_queue;
156	/* Queue of filled frames */
157	struct list_head dma_queue;
158	/* Used in video-buf */
159	spinlock_t irqlock;
160	/* IRQ lock for DMA queue */
161	spinlock_t dma_queue_lock;
162	/* lock used to access this structure */
163	struct mutex lock;
164	/* number of users performing IO */
165	u32 io_usrs;
166	/* Indicates whether streaming started */
167	u8 started;
168	/*
169	 * offset where second field starts from the starting of the
170	 * buffer for field separated YCbCr formats
171	 */
172	u32 field_off;
173};
174
175/* File handle structure */
176struct vpfe_fh {
177	struct vpfe_device *vpfe_dev;
178	/* Indicates whether this file handle is doing IO */
179	u8 io_allowed;
180	/* Used to keep track priority of this instance */
181	enum v4l2_priority prio;
182};
183
184struct vpfe_config_params {
185	u8 min_numbuffers;
186	u8 numbuffers;
187	u32 min_bufsize;
188	u32 device_bufsize;
189};
190
191#endif				/* End of __KERNEL__ */
192/**
193 * VPFE_CMD_S_CCDC_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params
194 * This can be used to configure modules such as defect pixel correction,
195 * color space conversion, culling etc. This is an experimental ioctl that
196 * will change in future kernels. So use this ioctl with care !
197 * TODO: This is to be split into multiple ioctls and also explore the
198 * possibility of extending the v4l2 api to include this
199 **/
200#define VPFE_CMD_S_CCDC_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
201					void *)
202#endif				/* _DAVINCI_VPFE_H */
203