linux/drivers/media/usb/au0828/au0828.h
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   1/*
   2 *  Driver for the Auvitek AU0828 USB bridge
   3 *
   4 *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
   5 *
   6 *  This program is free software; you can redistribute it and/or modify
   7 *  it under the terms of the GNU General Public License as published by
   8 *  the Free Software Foundation; either version 2 of the License, or
   9 *  (at your option) any later version.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *
  15 *  GNU General Public License for more details.
  16 */
  17
  18#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  19
  20#include <linux/bitops.h>
  21#include <linux/usb.h>
  22#include <linux/i2c.h>
  23#include <linux/i2c-algo-bit.h>
  24#include <media/tveeprom.h>
  25
  26/* Analog */
  27#include <linux/videodev2.h>
  28#include <media/videobuf2-v4l2.h>
  29#include <media/videobuf2-vmalloc.h>
  30#include <media/v4l2-device.h>
  31#include <media/v4l2-ctrls.h>
  32#include <media/v4l2-fh.h>
  33#include <media/media-device.h>
  34
  35/* DVB */
  36#include <media/demux.h>
  37#include <media/dmxdev.h>
  38#include <media/dvb_demux.h>
  39#include <media/dvb_frontend.h>
  40#include <media/dvb_net.h>
  41#include <media/dvbdev.h>
  42
  43#include "au0828-reg.h"
  44#include "au0828-cards.h"
  45
  46#define URB_COUNT   16
  47#define URB_BUFSIZE (0xe522)
  48
  49/* Analog constants */
  50#define NTSC_STD_W      720
  51#define NTSC_STD_H      480
  52
  53#define AU0828_INTERLACED_DEFAULT       1
  54
  55/* Defination for AU0828 USB transfer */
  56#define AU0828_MAX_ISO_BUFS    12  /* maybe resize this value in the future */
  57#define AU0828_ISO_PACKETS_PER_URB      128
  58
  59#define AU0828_MIN_BUF 4
  60#define AU0828_DEF_BUF 8
  61
  62#define AU0828_MAX_INPUT        4
  63
  64/* au0828 resource types (used for res_get/res_lock etc */
  65#define AU0828_RESOURCE_VIDEO 0x01
  66#define AU0828_RESOURCE_VBI   0x02
  67
  68enum au0828_itype {
  69        AU0828_VMUX_UNDEFINED = 0,
  70        AU0828_VMUX_COMPOSITE,
  71        AU0828_VMUX_SVIDEO,
  72        AU0828_VMUX_CABLE,
  73        AU0828_VMUX_TELEVISION,
  74        AU0828_VMUX_DVB,
  75};
  76
  77struct au0828_input {
  78        enum au0828_itype type;
  79        unsigned int vmux;
  80        unsigned int amux;
  81        void (*audio_setup) (void *priv, int enable);
  82};
  83
  84struct au0828_board {
  85        char *name;
  86        unsigned int tuner_type;
  87        unsigned char tuner_addr;
  88        unsigned char i2c_clk_divider;
  89        unsigned char has_ir_i2c:1;
  90        unsigned char has_analog:1;
  91        struct au0828_input input[AU0828_MAX_INPUT];
  92};
  93
  94struct au0828_dvb {
  95        struct mutex lock;
  96        struct dvb_adapter adapter;
  97        struct dvb_frontend *frontend;
  98        struct dvb_demux demux;
  99        struct dmxdev dmxdev;
 100        struct dmx_frontend fe_hw;
 101        struct dmx_frontend fe_mem;
 102        struct dvb_net net;
 103        int feeding;
 104        int start_count;
 105        int stop_count;
 106
 107        int (*set_frontend)(struct dvb_frontend *fe);
 108};
 109
 110enum au0828_stream_state {
 111        STREAM_OFF,
 112        STREAM_INTERRUPT,
 113        STREAM_ON
 114};
 115
 116#define AUVI_INPUT(nr) (dev->board.input[nr])
 117
 118/* device state */
 119enum au0828_dev_state {
 120        DEV_INITIALIZED = 0,
 121        DEV_DISCONNECTED = 1,
 122        DEV_MISCONFIGURED = 2
 123};
 124
 125struct au0828_dev;
 126
 127struct au0828_usb_isoc_ctl {
 128                /* max packet size of isoc transaction */
 129        int                             max_pkt_size;
 130
 131                /* number of allocated urbs */
 132        int                             num_bufs;
 133
 134                /* urb for isoc transfers */
 135        struct urb                      **urb;
 136
 137                /* transfer buffers for isoc transfer */
 138        char                            **transfer_buffer;
 139
 140                /* Last buffer command and region */
 141        u8                              cmd;
 142        int                             pos, size, pktsize;
 143
 144                /* Last field: ODD or EVEN? */
 145        int                             field;
 146
 147                /* Stores incomplete commands */
 148        u32                             tmp_buf;
 149        int                             tmp_buf_len;
 150
 151                /* Stores already requested buffers */
 152        struct au0828_buffer            *buf;
 153        struct au0828_buffer            *vbi_buf;
 154
 155                /* Stores the number of received fields */
 156        int                             nfields;
 157
 158                /* isoc urb callback */
 159        int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
 160
 161};
 162
 163/* buffer for one video frame */
 164struct au0828_buffer {
 165        /* common v4l buffer stuff -- must be first */
 166        struct vb2_v4l2_buffer vb;
 167        struct list_head list;
 168
 169        void *mem;
 170        unsigned long length;
 171        int top_field;
 172        /* pointer to vmalloc memory address in vb */
 173        char *vb_buf;
 174};
 175
 176struct au0828_dmaqueue {
 177        struct list_head       active;
 178        /* Counters to control buffer fill */
 179        int                    pos;
 180};
 181
 182struct au0828_dev {
 183        struct mutex mutex;
 184        struct usb_device       *usbdev;
 185        int                     boardnr;
 186        struct au0828_board     board;
 187        u8                      ctrlmsg[64];
 188
 189        /* I2C */
 190        struct i2c_adapter              i2c_adap;
 191        struct i2c_algorithm            i2c_algo;
 192        struct i2c_client               i2c_client;
 193        u32                             i2c_rc;
 194
 195        /* Digital */
 196        struct au0828_dvb               dvb;
 197        struct work_struct              restart_streaming;
 198        struct timer_list               bulk_timeout;
 199        int                             bulk_timeout_running;
 200
 201#ifdef CONFIG_VIDEO_AU0828_V4L2
 202        /* Analog */
 203        struct v4l2_device v4l2_dev;
 204        struct v4l2_ctrl_handler v4l2_ctrl_hdl;
 205#endif
 206#ifdef CONFIG_VIDEO_AU0828_RC
 207        struct au0828_rc *ir;
 208#endif
 209
 210        struct video_device vdev;
 211        struct video_device vbi_dev;
 212
 213        /* Videobuf2 */
 214        struct vb2_queue vb_vidq;
 215        struct vb2_queue vb_vbiq;
 216        struct mutex vb_queue_lock;
 217        struct mutex vb_vbi_queue_lock;
 218
 219        unsigned int frame_count;
 220        unsigned int vbi_frame_count;
 221
 222        struct timer_list vid_timeout;
 223        int vid_timeout_running;
 224        struct timer_list vbi_timeout;
 225        int vbi_timeout_running;
 226
 227        int users;
 228        int streaming_users;
 229
 230        int width;
 231        int height;
 232        int vbi_width;
 233        int vbi_height;
 234        u32 vbi_read;
 235        v4l2_std_id std;
 236        u32 field_size;
 237        u32 frame_size;
 238        u32 bytesperline;
 239        int type;
 240        u8 ctrl_ainput;
 241        __u8 isoc_in_endpointaddr;
 242        u8 isoc_init_ok;
 243        int greenscreen_detected;
 244        int ctrl_freq;
 245        int input_type;
 246        int std_set_in_tuner_core;
 247        unsigned int ctrl_input;
 248        long unsigned int dev_state; /* defined at enum au0828_dev_state */;
 249        enum au0828_stream_state stream_state;
 250        wait_queue_head_t open;
 251
 252        struct mutex lock;
 253
 254        /* Isoc control struct */
 255        struct au0828_dmaqueue vidq;
 256        struct au0828_dmaqueue vbiq;
 257        struct au0828_usb_isoc_ctl isoc_ctl;
 258        spinlock_t slock;
 259
 260        /* usb transfer */
 261        int alt;                /* alternate */
 262        int max_pkt_size;       /* max packet size of isoc transaction */
 263        int num_alt;            /* Number of alternative settings */
 264        unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 265        struct urb *urb[AU0828_MAX_ISO_BUFS];   /* urb for isoc transfers */
 266        char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
 267                                                   transfer */
 268
 269        /* DVB USB / URB Related */
 270        bool            urb_streaming, need_urb_start;
 271        struct urb      *urbs[URB_COUNT];
 272
 273        /* Preallocated transfer digital transfer buffers */
 274
 275        char *dig_transfer_buffer[URB_COUNT];
 276
 277#ifdef CONFIG_MEDIA_CONTROLLER
 278        struct media_device *media_dev;
 279        struct media_pad video_pad, vbi_pad;
 280        struct media_entity *decoder;
 281        struct media_entity input_ent[AU0828_MAX_INPUT];
 282        struct media_pad input_pad[AU0828_MAX_INPUT];
 283        struct media_entity_notify entity_notify;
 284        struct media_entity *tuner;
 285        struct media_link *active_link;
 286        struct media_entity *active_link_owner;
 287        struct media_entity *active_source;
 288        struct media_entity *active_sink;
 289#endif
 290};
 291
 292
 293/* ----------------------------------------------------------- */
 294#define au0828_read(dev, reg) au0828_readreg(dev, reg)
 295#define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
 296#define au0828_andor(dev, reg, mask, value)                             \
 297         au0828_writereg(dev, reg,                                      \
 298        (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
 299
 300#define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
 301#define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
 302
 303/* ----------------------------------------------------------- */
 304/* au0828-core.c */
 305extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
 306extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
 307extern void au0828_usb_release(struct au0828_dev *dev);
 308extern int au0828_debug;
 309
 310/* ----------------------------------------------------------- */
 311/* au0828-cards.c */
 312extern struct au0828_board au0828_boards[];
 313extern struct usb_device_id au0828_usb_id_table[];
 314extern void au0828_gpio_setup(struct au0828_dev *dev);
 315extern int au0828_tuner_callback(void *priv, int component,
 316                                 int command, int arg);
 317extern void au0828_card_setup(struct au0828_dev *dev);
 318
 319/* ----------------------------------------------------------- */
 320/* au0828-i2c.c */
 321extern int au0828_i2c_register(struct au0828_dev *dev);
 322extern int au0828_i2c_unregister(struct au0828_dev *dev);
 323
 324/* ----------------------------------------------------------- */
 325/* au0828-video.c */
 326extern int au0828_start_analog_streaming(struct vb2_queue *vq,
 327                                                unsigned int count);
 328extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
 329#ifdef CONFIG_VIDEO_AU0828_V4L2
 330extern int au0828_v4l2_device_register(struct usb_interface *interface,
 331                                      struct au0828_dev *dev);
 332
 333extern int au0828_analog_register(struct au0828_dev *dev,
 334                           struct usb_interface *interface);
 335extern int au0828_analog_unregister(struct au0828_dev *dev);
 336extern void au0828_usb_v4l2_media_release(struct au0828_dev *dev);
 337extern void au0828_v4l2_suspend(struct au0828_dev *dev);
 338extern void au0828_v4l2_resume(struct au0828_dev *dev);
 339#else
 340static inline int au0828_v4l2_device_register(struct usb_interface *interface,
 341                                              struct au0828_dev *dev)
 342{ return 0; };
 343static inline int au0828_analog_register(struct au0828_dev *dev,
 344                                     struct usb_interface *interface)
 345{ return 0; };
 346static inline int au0828_analog_unregister(struct au0828_dev *dev)
 347{ return 0; };
 348static inline void au0828_usb_v4l2_media_release(struct au0828_dev *dev) { };
 349static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
 350static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
 351#endif
 352
 353/* ----------------------------------------------------------- */
 354/* au0828-dvb.c */
 355extern int au0828_dvb_register(struct au0828_dev *dev);
 356extern void au0828_dvb_unregister(struct au0828_dev *dev);
 357void au0828_dvb_suspend(struct au0828_dev *dev);
 358void au0828_dvb_resume(struct au0828_dev *dev);
 359
 360/* au0828-vbi.c */
 361extern const struct vb2_ops au0828_vbi_qops;
 362
 363#define dprintk(level, fmt, arg...)\
 364        do { if (au0828_debug & level)\
 365                printk(KERN_DEBUG pr_fmt(fmt), ## arg);\
 366        } while (0)
 367
 368/* au0828-input.c */
 369#ifdef CONFIG_VIDEO_AU0828_RC
 370extern int au0828_rc_register(struct au0828_dev *dev);
 371extern void au0828_rc_unregister(struct au0828_dev *dev);
 372extern int au0828_rc_suspend(struct au0828_dev *dev);
 373extern int au0828_rc_resume(struct au0828_dev *dev);
 374#else
 375static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
 376static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
 377static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
 378static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }
 379#endif
 380
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