2 * stk-webcam.h : Driver for Syntek 1125 USB webcam controller
4 * Copyright (C) 2006 Nicolas VIVIEN
5 * Copyright 2007-2008 Jaime Velasco Juan <jsagarribay@gmail.com>
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
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.
21 #include <linux/usb.h>
22 #include <media/v4l2-device.h>
23 #include <media/v4l2-ctrls.h>
24 #include <media/v4l2-common.h>
26 #define DRIVER_VERSION "v0.0.1"
27 #define DRIVER_VERSION_NUM 0x000001
29 #define MAX_ISO_BUFS 3
30 #define ISO_FRAMES_PER_DESC 16
31 #define ISO_MAX_FRAME_SIZE 3 * 1024
32 #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
35 #define PREFIX "stkwebcam: "
36 #define STK_INFO(str, args...) printk(KERN_INFO PREFIX str, ##args)
37 #define STK_ERROR(str, args...) printk(KERN_ERR PREFIX str, ##args)
38 #define STK_WARNING(str, args...) printk(KERN_WARNING PREFIX str, ##args)
47 /* Streaming IO buffers */
48 struct stk_sio_buffer {
49 struct v4l2_buffer v4lbuf;
52 struct stk_camera *dev;
53 struct list_head list;
56 enum stk_mode {MODE_VGA, MODE_SXGA, MODE_CIF, MODE_QVGA, MODE_QCIF};
71 #define is_present(dev) ((dev)->status & S_PRESENT)
72 #define is_initialised(dev) ((dev)->status & S_INITIALISED)
73 #define is_streaming(dev) ((dev)->status & S_STREAMING)
74 #define is_memallocd(dev) ((dev)->status & S_MEMALLOCD)
75 #define set_present(dev) ((dev)->status = S_PRESENT)
76 #define unset_present(dev) ((dev)->status &= \
77 ~(S_PRESENT|S_INITIALISED|S_STREAMING))
78 #define set_initialised(dev) ((dev)->status |= S_INITIALISED)
79 #define unset_initialised(dev) ((dev)->status &= ~S_INITIALISED)
80 #define set_memallocd(dev) ((dev)->status |= S_MEMALLOCD)
81 #define unset_memallocd(dev) ((dev)->status &= ~S_MEMALLOCD)
82 #define set_streaming(dev) ((dev)->status |= S_STREAMING)
83 #define unset_streaming(dev) ((dev)->status &= ~S_STREAMING)
91 struct v4l2_device v4l2_dev;
92 struct v4l2_ctrl_handler hdl;
93 struct video_device vdev;
94 struct usb_device *udev;
95 struct usb_interface *interface;
103 /* Not sure if this is right */
106 struct stk_video vsettings;
108 enum stk_status status;
111 wait_queue_head_t wait_frame;
113 struct stk_iso_buf *isobufs;
116 /* Streaming buffers */
118 unsigned int n_sbufs;
119 struct stk_sio_buffer *sio_bufs;
120 struct list_head sio_avail;
121 struct list_head sio_full;
125 #define vdev_to_camera(d) container_of(d, struct stk_camera, vdev)
127 int stk_camera_write_reg(struct stk_camera *, u16, u8);
128 int stk_camera_read_reg(struct stk_camera *, u16, u8 *);
130 int stk_sensor_init(struct stk_camera *);
131 int stk_sensor_configure(struct stk_camera *);
132 int stk_sensor_sleep(struct stk_camera *dev);
133 int stk_sensor_wakeup(struct stk_camera *dev);
134 int stk_sensor_set_brightness(struct stk_camera *dev, int br);