1 /*
2 * stk-webcam.h : Driver for Syntek 1125 USB webcam controller
3 *
4 * Copyright (C) 2006 Nicolas VIVIEN
5 * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22 #ifndef STKWEBCAM_H
23 #define STKWEBCAM_H
24
25 #include <linux/usb.h>
26 #include <media/v4l2-common.h>
27
28 #define DRIVER_VERSION "v0.0.1"
29 #define DRIVER_VERSION_NUM 0x000001
30
31 #define MAX_ISO_BUFS 3
32 #define ISO_FRAMES_PER_DESC 16
33 #define ISO_MAX_FRAME_SIZE 3 * 1024
34 #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
35
36
37 #define PREFIX "stkwebcam: "
38 #define STK_INFO(str, args...) printk(KERN_INFO PREFIX str, ##args)
39 #define STK_ERROR(str, args...) printk(KERN_ERR PREFIX str, ##args)
40 #define STK_WARNING(str, args...) printk(KERN_WARNING PREFIX str, ##args)
41
42 struct stk_iso_buf {
43 void *data;
44 int length;
45 int read;
46 struct urb *urb;
47 };
48
49 /* Streaming IO buffers */
50 struct stk_sio_buffer {
51 struct v4l2_buffer v4lbuf;
52 char *buffer;
53 int mapcount;
54 struct stk_camera *dev;
55 struct list_head list;
56 };
57
58 enum stk_mode {MODE_VGA, MODE_SXGA, MODE_CIF, MODE_QVGA, MODE_QCIF};
59
60 struct stk_video {
61 enum stk_mode mode;
62 int brightness;
63 __u32 palette;
64 int hflip;
65 int vflip;
66 };
67
68 enum stk_status {
69 S_PRESENT = 1,
70 S_INITIALISED = 2,
71 S_MEMALLOCD = 4,
72 S_STREAMING = 8,
73 };
74 #define is_present(dev) ((dev)->status & S_PRESENT)
75 #define is_initialised(dev) ((dev)->status & S_INITIALISED)
76 #define is_streaming(dev) ((dev)->status & S_STREAMING)
77 #define is_memallocd(dev) ((dev)->status & S_MEMALLOCD)
78 #define set_present(dev) ((dev)->status = S_PRESENT)
79 #define unset_present(dev) ((dev)->status &= \
80 ~(S_PRESENT|S_INITIALISED|S_STREAMING))
81 #define set_initialised(dev) ((dev)->status |= S_INITIALISED)
82 #define unset_initialised(dev) ((dev)->status &= ~S_INITIALISED)
83 #define set_memallocd(dev) ((dev)->status |= S_MEMALLOCD)
84 #define unset_memallocd(dev) ((dev)->status &= ~S_MEMALLOCD)
85 #define set_streaming(dev) ((dev)->status |= S_STREAMING)
86 #define unset_streaming(dev) ((dev)->status &= ~S_STREAMING)
87
88 struct regval {
89 unsigned reg;
90 unsigned val;
91 };
92
93 struct stk_camera {
94 struct video_device vdev;
95 struct usb_device *udev;
96 struct usb_interface *interface;
97 int webcam_model;
98 struct file *owner;
99
100 u8 isoc_ep;
101
102 struct kref kref;
103 /* Not sure if this is right */
104 atomic_t urbs_used;
105
106 struct stk_video vsettings;
107
108 enum stk_status status;
109
110 spinlock_t spinlock;
111 wait_queue_head_t wait_frame;
112
113 struct stk_iso_buf *isobufs;
114
115 int frame_size;
116 /* Streaming buffers */
117 unsigned int n_sbufs;
118 struct stk_sio_buffer *sio_bufs;
119 struct list_head sio_avail;
120 struct list_head sio_full;
121 unsigned sequence;
122 };
123
124 #define to_stk_camera(d) container_of(d, struct stk_camera, kref)
125 #define vdev_to_camera(d) container_of(d, struct stk_camera, vdev)
126
127 void stk_camera_delete(struct kref *);
128 int stk_camera_write_reg(struct stk_camera *, u16, u8);
129 int stk_camera_read_reg(struct stk_camera *, u16, int *);
130
131 int stk_sensor_init(struct stk_camera *);
132 int stk_sensor_configure(struct stk_camera *);
133 int stk_sensor_sleep(struct stk_camera *dev);
134 int stk_sensor_wakeup(struct stk_camera *dev);
135 int stk_sensor_set_brightness(struct stk_camera *dev, int br);
136
137 #endif
138
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