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* Driver for the Auvitek AU0828 USB bridge
* Copyright (c) 2008 Steven Toth <>
* 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
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/bitops.h>
#include <linux/usb.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <media/tveeprom.h>
/* Analog */
#include <linux/videodev2.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/media-device.h>
/* DVB */
#include "demux.h"
#include "dmxdev.h"
#include "dvb_demux.h"
#include "dvb_frontend.h"
#include "dvb_net.h"
#include "dvbdev.h"
#include "au0828-reg.h"
#include "au0828-cards.h"
#define URB_COUNT 16
#define URB_BUFSIZE (0xe522)
/* Analog constants */
#define NTSC_STD_W 720
#define NTSC_STD_H 480
/* Defination for AU0828 USB transfer */
#define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */
#define AU0828_ISO_PACKETS_PER_URB 128
#define AU0828_MIN_BUF 4
#define AU0828_DEF_BUF 8
#define AU0828_MAX_INPUT 4
/* au0828 resource types (used for res_get/res_lock etc */
#define AU0828_RESOURCE_VIDEO 0x01
#define AU0828_RESOURCE_VBI 0x02
enum au0828_itype {
struct au0828_input {
enum au0828_itype type;
unsigned int vmux;
unsigned int amux;
void (*audio_setup) (void *priv, int enable);
struct au0828_board {
char *name;
unsigned int tuner_type;
unsigned char tuner_addr;
unsigned char i2c_clk_divider;
unsigned char has_ir_i2c:1;
unsigned char has_analog:1;
struct au0828_input input[AU0828_MAX_INPUT];
struct au0828_dvb {
struct mutex lock;
struct dvb_adapter adapter;
struct dvb_frontend *frontend;
struct dvb_demux demux;
struct dmxdev dmxdev;
struct dmx_frontend fe_hw;
struct dmx_frontend fe_mem;
struct dvb_net net;
int feeding;
int start_count;
int stop_count;
int (*set_frontend)(struct dvb_frontend *fe);
enum au0828_stream_state {
#define AUVI_INPUT(nr) (dev->board.input[nr])
/* device state */
enum au0828_dev_state {
struct au0828_dev;
struct au0828_usb_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;
/* Last buffer command and region */
u8 cmd;
int pos, size, pktsize;
/* Last field: ODD or EVEN? */
int field;
/* Stores incomplete commands */
u32 tmp_buf;
int tmp_buf_len;
/* Stores already requested buffers */
struct au0828_buffer *buf;
struct au0828_buffer *vbi_buf;
/* Stores the number of received fields */
int nfields;
/* isoc urb callback */
int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
/* buffer for one video frame */
struct au0828_buffer {
/* common v4l buffer stuff -- must be first */
struct vb2_v4l2_buffer vb;
struct list_head list;
void *mem;
unsigned long length;
int top_field;
/* pointer to vmalloc memory address in vb */
char *vb_buf;
struct au0828_dmaqueue {
struct list_head active;
/* Counters to control buffer fill */
int pos;
struct au0828_dev {
struct mutex mutex;
struct usb_device *usbdev;
int boardnr;
struct au0828_board board;
u8 ctrlmsg[64];
/* I2C */
struct i2c_adapter i2c_adap;
struct i2c_algorithm i2c_algo;
struct i2c_client i2c_client;
u32 i2c_rc;
/* Digital */
struct au0828_dvb dvb;
struct work_struct restart_streaming;
#ifdef CONFIG_VIDEO_AU0828_V4L2
/* Analog */
struct v4l2_device v4l2_dev;
struct v4l2_ctrl_handler v4l2_ctrl_hdl;
struct au0828_rc *ir;
struct video_device vdev;
struct video_device vbi_dev;
/* Videobuf2 */
struct vb2_queue vb_vidq;
struct vb2_queue vb_vbiq;
struct mutex vb_queue_lock;
struct mutex vb_vbi_queue_lock;
unsigned int frame_count;
unsigned int vbi_frame_count;
struct timer_list vid_timeout;
int vid_timeout_running;
struct timer_list vbi_timeout;
int vbi_timeout_running;
int users;
int streaming_users;
int width;
int height;
int vbi_width;
int vbi_height;
u32 vbi_read;
v4l2_std_id std;
u32 field_size;
u32 frame_size;
u32 bytesperline;
int type;
u8 ctrl_ainput;
__u8 isoc_in_endpointaddr;
u8 isoc_init_ok;
int greenscreen_detected;
int ctrl_freq;
int input_type;
int std_set_in_tuner_core;
unsigned int ctrl_input;
long unsigned int dev_state; /* defined at enum au0828_dev_state */;
enum au0828_stream_state stream_state;
wait_queue_head_t open;
struct mutex lock;
/* Isoc control struct */
struct au0828_dmaqueue vidq;
struct au0828_dmaqueue vbiq;
struct au0828_usb_isoc_ctl isoc_ctl;
spinlock_t slock;
/* usb transfer */
int alt; /* alternate */
int max_pkt_size; /* max packet size of isoc transaction */
int num_alt; /* Number of alternative settings */
unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */
char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
transfer */
/* DVB USB / URB Related */
bool urb_streaming, need_urb_start;
struct urb *urbs[URB_COUNT];
/* Preallocated transfer digital transfer buffers */
char *dig_transfer_buffer[URB_COUNT];
struct media_device *media_dev;
struct media_pad video_pad, vbi_pad;
struct media_entity *decoder;
struct media_entity input_ent[AU0828_MAX_INPUT];
struct media_pad input_pad[AU0828_MAX_INPUT];
struct media_entity_notify entity_notify;
struct media_entity *tuner;
struct media_link *active_link;
struct media_entity *active_link_owner;
struct media_entity *active_source;
struct media_entity *active_sink;
/* ----------------------------------------------------------- */
#define au0828_read(dev, reg) au0828_readreg(dev, reg)
#define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
#define au0828_andor(dev, reg, mask, value) \
au0828_writereg(dev, reg, \
(au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
#define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
#define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
/* ----------------------------------------------------------- */
/* au0828-core.c */
extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
extern void au0828_usb_release(struct au0828_dev *dev);
extern int au0828_debug;
/* ----------------------------------------------------------- */
/* au0828-cards.c */
extern struct au0828_board au0828_boards[];
extern struct usb_device_id au0828_usb_id_table[];
extern void au0828_gpio_setup(struct au0828_dev *dev);
extern int au0828_tuner_callback(void *priv, int component,
int command, int arg);
extern void au0828_card_setup(struct au0828_dev *dev);
/* ----------------------------------------------------------- */
/* au0828-i2c.c */
extern int au0828_i2c_register(struct au0828_dev *dev);
extern int au0828_i2c_unregister(struct au0828_dev *dev);
/* ----------------------------------------------------------- */
/* au0828-video.c */
extern int au0828_start_analog_streaming(struct vb2_queue *vq,
unsigned int count);
extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
#ifdef CONFIG_VIDEO_AU0828_V4L2
extern int au0828_v4l2_device_register(struct usb_interface *interface,
struct au0828_dev *dev);
extern int au0828_analog_register(struct au0828_dev *dev,
struct usb_interface *interface);
extern int au0828_analog_unregister(struct au0828_dev *dev);
extern void au0828_usb_v4l2_media_release(struct au0828_dev *dev);
extern void au0828_v4l2_suspend(struct au0828_dev *dev);
extern void au0828_v4l2_resume(struct au0828_dev *dev);
static inline int au0828_v4l2_device_register(struct usb_interface *interface,
struct au0828_dev *dev)
{ return 0; };
static inline int au0828_analog_register(struct au0828_dev *dev,
struct usb_interface *interface)
{ return 0; };
static inline int au0828_analog_unregister(struct au0828_dev *dev)
{ return 0; };
static inline void au0828_usb_v4l2_media_release(struct au0828_dev *dev) { };
static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
/* ----------------------------------------------------------- */
/* au0828-dvb.c */
extern int au0828_dvb_register(struct au0828_dev *dev);
extern void au0828_dvb_unregister(struct au0828_dev *dev);
void au0828_dvb_suspend(struct au0828_dev *dev);
void au0828_dvb_resume(struct au0828_dev *dev);
/* au0828-vbi.c */
extern struct vb2_ops au0828_vbi_qops;
#define dprintk(level, fmt, arg...)\
do { if (au0828_debug & level)\
printk(KERN_DEBUG pr_fmt(fmt), ## arg);\
} while (0)
/* au0828-input.c */
extern int au0828_rc_register(struct au0828_dev *dev);
extern void au0828_rc_unregister(struct au0828_dev *dev);
extern int au0828_rc_suspend(struct au0828_dev *dev);
extern int au0828_rc_resume(struct au0828_dev *dev);
static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }