203 строки
5.0 KiB
C
203 строки
5.0 KiB
C
/*
|
|
* STK1160 driver
|
|
*
|
|
* Copyright (C) 2012 Ezequiel Garcia
|
|
* <elezegarcia--a.t--gmail.com>
|
|
*
|
|
* Based on Easycap driver by R.M. Thomas
|
|
* Copyright (C) 2010 R.M. Thomas
|
|
* <rmthomas--a.t--sciolus.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include <sound/core.h>
|
|
#include <sound/ac97_codec.h>
|
|
#include <media/videobuf2-v4l2.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <media/v4l2-ctrls.h>
|
|
|
|
#define STK1160_VERSION "0.9.5"
|
|
#define STK1160_VERSION_NUM 0x000905
|
|
|
|
/* Decide on number of packets for each buffer */
|
|
#define STK1160_NUM_PACKETS 64
|
|
|
|
/* Number of buffers for isoc transfers */
|
|
#define STK1160_NUM_BUFS 16
|
|
#define STK1160_MIN_BUFS 1
|
|
|
|
/* TODO: This endpoint address should be retrieved */
|
|
#define STK1160_EP_VIDEO 0x82
|
|
#define STK1160_EP_AUDIO 0x81
|
|
|
|
/* Max and min video buffers */
|
|
#define STK1160_MIN_VIDEO_BUFFERS 8
|
|
#define STK1160_MAX_VIDEO_BUFFERS 32
|
|
|
|
#define STK1160_MIN_PKT_SIZE 3072
|
|
|
|
#define STK1160_MAX_INPUT 4
|
|
#define STK1160_SVIDEO_INPUT 4
|
|
|
|
#define STK1160_AC97_TIMEOUT 50
|
|
|
|
#define STK1160_I2C_TIMEOUT 100
|
|
|
|
/* TODO: Print helpers
|
|
* I could use dev_xxx, pr_xxx, v4l2_xxx or printk.
|
|
* However, there isn't a solid consensus on which
|
|
* new drivers should use.
|
|
*
|
|
*/
|
|
#ifdef DEBUG
|
|
#define stk1160_dbg(fmt, args...) \
|
|
printk(KERN_DEBUG "stk1160: " fmt, ## args)
|
|
#else
|
|
#define stk1160_dbg(fmt, args...)
|
|
#endif
|
|
|
|
#define stk1160_info(fmt, args...) \
|
|
pr_info("stk1160: " fmt, ## args)
|
|
|
|
#define stk1160_warn(fmt, args...) \
|
|
pr_warn("stk1160: " fmt, ## args)
|
|
|
|
#define stk1160_err(fmt, args...) \
|
|
pr_err("stk1160: " fmt, ## args)
|
|
|
|
/* Buffer for one video frame */
|
|
struct stk1160_buffer {
|
|
/* common v4l buffer stuff -- must be first */
|
|
struct vb2_v4l2_buffer vb;
|
|
struct list_head list;
|
|
|
|
void *mem;
|
|
unsigned int length; /* buffer length */
|
|
unsigned int bytesused; /* bytes written */
|
|
int odd; /* current oddity */
|
|
|
|
/*
|
|
* Since we interlace two fields per frame,
|
|
* this is different from bytesused.
|
|
*/
|
|
unsigned int pos; /* current pos inside buffer */
|
|
};
|
|
|
|
struct stk1160_isoc_ctl {
|
|
/* max packet size of isoc transaction */
|
|
int max_pkt_size;
|
|
|
|
/* number of allocated urbs */
|
|
int num_bufs;
|
|
|
|
/* urb for isoc transfers */
|
|
struct urb **urb;
|
|
|
|
/* transfer buffers for isoc transfer */
|
|
char **transfer_buffer;
|
|
|
|
/* current buffer */
|
|
struct stk1160_buffer *buf;
|
|
};
|
|
|
|
struct stk1160_fmt {
|
|
char *name;
|
|
u32 fourcc; /* v4l2 format id */
|
|
int depth;
|
|
};
|
|
|
|
struct stk1160 {
|
|
struct v4l2_device v4l2_dev;
|
|
struct video_device vdev;
|
|
struct v4l2_ctrl_handler ctrl_handler;
|
|
|
|
struct device *dev;
|
|
struct usb_device *udev;
|
|
|
|
/* saa7115 subdev */
|
|
struct v4l2_subdev *sd_saa7115;
|
|
|
|
/* isoc control struct */
|
|
struct list_head avail_bufs;
|
|
|
|
/* video capture */
|
|
struct vb2_queue vb_vidq;
|
|
|
|
/* max packet size of isoc transaction */
|
|
int max_pkt_size;
|
|
/* array of wMaxPacketSize */
|
|
unsigned int *alt_max_pkt_size;
|
|
/* alternate */
|
|
int alt;
|
|
/* Number of alternative settings */
|
|
int num_alt;
|
|
|
|
struct stk1160_isoc_ctl isoc_ctl;
|
|
|
|
/* frame properties */
|
|
int width; /* current frame width */
|
|
int height; /* current frame height */
|
|
unsigned int ctl_input; /* selected input */
|
|
v4l2_std_id norm; /* current norm */
|
|
struct stk1160_fmt *fmt; /* selected format */
|
|
|
|
unsigned int sequence;
|
|
|
|
/* i2c i/o */
|
|
struct i2c_adapter i2c_adap;
|
|
struct i2c_client i2c_client;
|
|
|
|
struct mutex v4l_lock;
|
|
struct mutex vb_queue_lock;
|
|
spinlock_t buf_lock;
|
|
|
|
struct file *fh_owner; /* filehandle ownership */
|
|
|
|
/* EXPERIMENTAL */
|
|
struct snd_card *snd_card;
|
|
};
|
|
|
|
struct regval {
|
|
u16 reg;
|
|
u16 val;
|
|
};
|
|
|
|
/* Provided by stk1160-v4l.c */
|
|
int stk1160_vb2_setup(struct stk1160 *dev);
|
|
int stk1160_video_register(struct stk1160 *dev);
|
|
void stk1160_video_unregister(struct stk1160 *dev);
|
|
void stk1160_clear_queue(struct stk1160 *dev);
|
|
|
|
/* Provided by stk1160-video.c */
|
|
int stk1160_alloc_isoc(struct stk1160 *dev);
|
|
void stk1160_free_isoc(struct stk1160 *dev);
|
|
void stk1160_cancel_isoc(struct stk1160 *dev);
|
|
void stk1160_uninit_isoc(struct stk1160 *dev);
|
|
|
|
/* Provided by stk1160-i2c.c */
|
|
int stk1160_i2c_register(struct stk1160 *dev);
|
|
int stk1160_i2c_unregister(struct stk1160 *dev);
|
|
|
|
/* Provided by stk1160-core.c */
|
|
int stk1160_read_reg(struct stk1160 *dev, u16 reg, u8 *value);
|
|
int stk1160_write_reg(struct stk1160 *dev, u16 reg, u16 value);
|
|
int stk1160_write_regs_req(struct stk1160 *dev, u8 req, u16 reg,
|
|
char *buf, int len);
|
|
int stk1160_read_reg_req_len(struct stk1160 *dev, u8 req, u16 reg,
|
|
char *buf, int len);
|
|
void stk1160_select_input(struct stk1160 *dev);
|
|
|
|
/* Provided by stk1160-ac97.c */
|
|
void stk1160_ac97_setup(struct stk1160 *dev);
|