drivers/media/usb/au0828/au0828.h

   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
  68 enum 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
  77 struct 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
  84 struct 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
  94 struct 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
 110 enum 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 */
 119 enum au0828_dev_state {
 120         DEV_INITIALIZED = 0,
 121         DEV_DISCONNECTED = 1,
 122         DEV_MISCONFIGURED = 2
 123 };
 124
 125 struct au0828_dev;
 126
 127 struct 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 */
 164 struct 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
 176 struct au0828_dmaqueue {
 177         struct list_head       active;
 178         /* Counters to control buffer fill */
 179         int                    pos;
 180 };
 181
 182 struct 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 */
 305 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
 306 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
 307 extern void au0828_usb_release(struct au0828_dev *dev);
 308 extern int au0828_debug;
 309
 310 /* ----------------------------------------------------------- */
 311 /* au0828-cards.c */
 312 extern struct au0828_board au0828_boards[];
 313 extern struct usb_device_id au0828_usb_id_table[];
 314 extern void au0828_gpio_setup(struct au0828_dev *dev);
 315 extern int au0828_tuner_callback(void *priv, int component,
 316                                  int command, int arg);
 317 extern void au0828_card_setup(struct au0828_dev *dev);
 318
 319 /* ----------------------------------------------------------- */
 320 /* au0828-i2c.c */
 321 extern int au0828_i2c_register(struct au0828_dev *dev);
 322 extern int au0828_i2c_unregister(struct au0828_dev *dev);
 323
 324 /* ----------------------------------------------------------- */
 325 /* au0828-video.c */
 326 extern int au0828_start_analog_streaming(struct vb2_queue *vq,
 327                                                 unsigned int count);
 328 extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
 329 #ifdef CONFIG_VIDEO_AU0828_V4L2
 330 extern int au0828_v4l2_device_register(struct usb_interface *interface,
 331                                       struct au0828_dev *dev);
 332
 333 extern int au0828_analog_register(struct au0828_dev *dev,
 334                            struct usb_interface *interface);
 335 extern int au0828_analog_unregister(struct au0828_dev *dev);
 336 extern void au0828_usb_v4l2_media_release(struct au0828_dev *dev);
 337 extern void au0828_v4l2_suspend(struct au0828_dev *dev);
 338 extern void au0828_v4l2_resume(struct au0828_dev *dev);
 339 #else
 340 static inline int au0828_v4l2_device_register(struct usb_interface *interface,
 341                                               struct au0828_dev *dev)
 342 { return 0; };
 343 static inline int au0828_analog_register(struct au0828_dev *dev,
 344                                      struct usb_interface *interface)
 345 { return 0; };
 346 static inline int au0828_analog_unregister(struct au0828_dev *dev)
 347 { return 0; };
 348 static inline void au0828_usb_v4l2_media_release(struct au0828_dev *dev) { };
 349 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
 350 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
 351 #endif
 352
 353 /* ----------------------------------------------------------- */
 354 /* au0828-dvb.c */
 355 extern int au0828_dvb_register(struct au0828_dev *dev);
 356 extern void au0828_dvb_unregister(struct au0828_dev *dev);
 357 void au0828_dvb_suspend(struct au0828_dev *dev);
 358 void au0828_dvb_resume(struct au0828_dev *dev);
 359
 360 /* au0828-vbi.c */
 361 extern 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
 370 extern int au0828_rc_register(struct au0828_dev *dev);
 371 extern void au0828_rc_unregister(struct au0828_dev *dev);
 372 extern int au0828_rc_suspend(struct au0828_dev *dev);
 373 extern int au0828_rc_resume(struct au0828_dev *dev);
 374 #else
 375 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
 376 static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
 377 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
 378 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }
 379 #endif