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  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  23
  24 #include <linux/bitops.h>
  25 #include <linux/usb.h>
  26 #include <linux/i2c.h>
  27 #include <linux/i2c-algo-bit.h>
  28 #include <media/tveeprom.h>
  29
  30 /* Analog */
  31 #include <linux/videodev2.h>
  32 #include <media/videobuf2-v4l2.h>
  33 #include <media/videobuf2-vmalloc.h>
  34 #include <media/v4l2-device.h>
  35 #include <media/v4l2-ctrls.h>
  36 #include <media/v4l2-fh.h>
  37 #include <media/media-device.h>
  38
  39 /* DVB */
  40 #include "demux.h"
  41 #include "dmxdev.h"
  42 #include "dvb_demux.h"
  43 #include "dvb_frontend.h"
  44 #include "dvb_net.h"
  45 #include "dvbdev.h"
  46
  47 #include "au0828-reg.h"
  48 #include "au0828-cards.h"
  49
  50 #define URB_COUNT   16
  51 #define URB_BUFSIZE (0xe522)
  52
  53 /* Analog constants */
  54 #define NTSC_STD_W      720
  55 #define NTSC_STD_H      480
  56
  57 #define AU0828_INTERLACED_DEFAULT       1
  58
  59 /* Defination for AU0828 USB transfer */
  60 #define AU0828_MAX_ISO_BUFS    12  /* maybe resize this value in the future */
  61 #define AU0828_ISO_PACKETS_PER_URB      128
  62
  63 #define AU0828_MIN_BUF 4
  64 #define AU0828_DEF_BUF 8
  65
  66 #define AU0828_MAX_INPUT        4
  67
  68 /* au0828 resource types (used for res_get/res_lock etc */
  69 #define AU0828_RESOURCE_VIDEO 0x01
  70 #define AU0828_RESOURCE_VBI   0x02
  71
  72 enum au0828_itype {
  73         AU0828_VMUX_UNDEFINED = 0,
  74         AU0828_VMUX_COMPOSITE,
  75         AU0828_VMUX_SVIDEO,
  76         AU0828_VMUX_CABLE,
  77         AU0828_VMUX_TELEVISION,
  78         AU0828_VMUX_DVB,
  79 };
  80
  81 struct au0828_input {
  82         enum au0828_itype type;
  83         unsigned int vmux;
  84         unsigned int amux;
  85         void (*audio_setup) (void *priv, int enable);
  86 };
  87
  88 struct au0828_board {
  89         char *name;
  90         unsigned int tuner_type;
  91         unsigned char tuner_addr;
  92         unsigned char i2c_clk_divider;
  93         unsigned char has_ir_i2c:1;
  94         unsigned char has_analog:1;
  95         struct au0828_input input[AU0828_MAX_INPUT];
  96 };
  97
  98 struct au0828_dvb {
  99         struct mutex lock;
 100         struct dvb_adapter adapter;
 101         struct dvb_frontend *frontend;
 102         struct dvb_demux demux;
 103         struct dmxdev dmxdev;
 104         struct dmx_frontend fe_hw;
 105         struct dmx_frontend fe_mem;
 106         struct dvb_net net;
 107         int feeding;
 108         int start_count;
 109         int stop_count;
 110
 111         int (*set_frontend)(struct dvb_frontend *fe);
 112 };
 113
 114 enum au0828_stream_state {
 115         STREAM_OFF,
 116         STREAM_INTERRUPT,
 117         STREAM_ON
 118 };
 119
 120 #define AUVI_INPUT(nr) (dev->board.input[nr])
 121
 122 /* device state */
 123 enum au0828_dev_state {
 124         DEV_INITIALIZED = 0,
 125         DEV_DISCONNECTED = 1,
 126         DEV_MISCONFIGURED = 2
 127 };
 128
 129 struct au0828_dev;
 130
 131 struct au0828_usb_isoc_ctl {
 132                 /* max packet size of isoc transaction */
 133         int                             max_pkt_size;
 134
 135                 /* number of allocated urbs */
 136         int                             num_bufs;
 137
 138                 /* urb for isoc transfers */
 139         struct urb                      **urb;
 140
 141                 /* transfer buffers for isoc transfer */
 142         char                            **transfer_buffer;
 143
 144                 /* Last buffer command and region */
 145         u8                              cmd;
 146         int                             pos, size, pktsize;
 147
 148                 /* Last field: ODD or EVEN? */
 149         int                             field;
 150
 151                 /* Stores incomplete commands */
 152         u32                             tmp_buf;
 153         int                             tmp_buf_len;
 154
 155                 /* Stores already requested buffers */
 156         struct au0828_buffer            *buf;
 157         struct au0828_buffer            *vbi_buf;
 158
 159                 /* Stores the number of received fields */
 160         int                             nfields;
 161
 162                 /* isoc urb callback */
 163         int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
 164
 165 };
 166
 167 /* buffer for one video frame */
 168 struct au0828_buffer {
 169         /* common v4l buffer stuff -- must be first */
 170         struct vb2_v4l2_buffer vb;
 171         struct list_head list;
 172
 173         void *mem;
 174         unsigned long length;
 175         int top_field;
 176         /* pointer to vmalloc memory address in vb */
 177         char *vb_buf;
 178 };
 179
 180 struct au0828_dmaqueue {
 181         struct list_head       active;
 182         /* Counters to control buffer fill */
 183         int                    pos;
 184 };
 185
 186 struct au0828_dev {
 187         struct mutex mutex;
 188         struct usb_device       *usbdev;
 189         int                     boardnr;
 190         struct au0828_board     board;
 191         u8                      ctrlmsg[64];
 192
 193         /* I2C */
 194         struct i2c_adapter              i2c_adap;
 195         struct i2c_algorithm            i2c_algo;
 196         struct i2c_client               i2c_client;
 197         u32                             i2c_rc;
 198
 199         /* Digital */
 200         struct au0828_dvb               dvb;
 201         struct work_struct              restart_streaming;
 202
 203 #ifdef CONFIG_VIDEO_AU0828_V4L2
 204         /* Analog */
 205         struct v4l2_device v4l2_dev;
 206         struct v4l2_ctrl_handler v4l2_ctrl_hdl;
 207 #endif
 208 #ifdef CONFIG_VIDEO_AU0828_RC
 209         struct au0828_rc *ir;
 210 #endif
 211
 212         struct video_device vdev;
 213         struct video_device vbi_dev;
 214
 215         /* Videobuf2 */
 216         struct vb2_queue vb_vidq;
 217         struct vb2_queue vb_vbiq;
 218         struct mutex vb_queue_lock;
 219         struct mutex vb_vbi_queue_lock;
 220
 221         unsigned int frame_count;
 222         unsigned int vbi_frame_count;
 223
 224         struct timer_list vid_timeout;
 225         int vid_timeout_running;
 226         struct timer_list vbi_timeout;
 227         int vbi_timeout_running;
 228
 229         int users;
 230         int streaming_users;
 231
 232         int width;
 233         int height;
 234         int vbi_width;
 235         int vbi_height;
 236         u32 vbi_read;
 237         v4l2_std_id std;
 238         u32 field_size;
 239         u32 frame_size;
 240         u32 bytesperline;
 241         int type;
 242         u8 ctrl_ainput;
 243         __u8 isoc_in_endpointaddr;
 244         u8 isoc_init_ok;
 245         int greenscreen_detected;
 246         int ctrl_freq;
 247         int input_type;
 248         int std_set_in_tuner_core;
 249         unsigned int ctrl_input;
 250         long unsigned int dev_state; /* defined at enum au0828_dev_state */;
 251         enum au0828_stream_state stream_state;
 252         wait_queue_head_t open;
 253
 254         struct mutex lock;
 255
 256         /* Isoc control struct */
 257         struct au0828_dmaqueue vidq;
 258         struct au0828_dmaqueue vbiq;
 259         struct au0828_usb_isoc_ctl isoc_ctl;
 260         spinlock_t slock;
 261
 262         /* usb transfer */
 263         int alt;                /* alternate */
 264         int max_pkt_size;       /* max packet size of isoc transaction */
 265         int num_alt;            /* Number of alternative settings */
 266         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 267         struct urb *urb[AU0828_MAX_ISO_BUFS];   /* urb for isoc transfers */
 268         char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
 269                                                    transfer */
 270
 271         /* DVB USB / URB Related */
 272         bool            urb_streaming, need_urb_start;
 273         struct urb      *urbs[URB_COUNT];
 274
 275         /* Preallocated transfer digital transfer buffers */
 276
 277         char *dig_transfer_buffer[URB_COUNT];
 278
 279 #ifdef CONFIG_MEDIA_CONTROLLER
 280         struct media_device *media_dev;
 281         struct media_pad video_pad, vbi_pad;
 282         struct media_entity *decoder;
 283         struct media_entity input_ent[AU0828_MAX_INPUT];
 284         struct media_pad input_pad[AU0828_MAX_INPUT];
 285         struct media_entity_notify entity_notify;
 286         struct media_entity *tuner;
 287         struct media_link *active_link;
 288         struct media_entity *active_link_owner;
 289         struct media_entity *active_source;
 290         struct media_entity *active_sink;
 291 #endif
 292 };
 293
 294
 295 /* ----------------------------------------------------------- */
 296 #define au0828_read(dev, reg) au0828_readreg(dev, reg)
 297 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
 298 #define au0828_andor(dev, reg, mask, value)                             \
 299          au0828_writereg(dev, reg,                                      \
 300         (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
 301
 302 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
 303 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
 304
 305 /* ----------------------------------------------------------- */
 306 /* au0828-core.c */
 307 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
 308 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
 309 extern void au0828_usb_release(struct au0828_dev *dev);
 310 extern int au0828_debug;
 311
 312 /* ----------------------------------------------------------- */
 313 /* au0828-cards.c */
 314 extern struct au0828_board au0828_boards[];
 315 extern struct usb_device_id au0828_usb_id_table[];
 316 extern void au0828_gpio_setup(struct au0828_dev *dev);
 317 extern int au0828_tuner_callback(void *priv, int component,
 318                                  int command, int arg);
 319 extern void au0828_card_setup(struct au0828_dev *dev);
 320
 321 /* ----------------------------------------------------------- */
 322 /* au0828-i2c.c */
 323 extern int au0828_i2c_register(struct au0828_dev *dev);
 324 extern int au0828_i2c_unregister(struct au0828_dev *dev);
 325
 326 /* ----------------------------------------------------------- */
 327 /* au0828-video.c */
 328 extern int au0828_start_analog_streaming(struct vb2_queue *vq,
 329                                                 unsigned int count);
 330 extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
 331 #ifdef CONFIG_VIDEO_AU0828_V4L2
 332 extern int au0828_v4l2_device_register(struct usb_interface *interface,
 333                                       struct au0828_dev *dev);
 334
 335 extern int au0828_analog_register(struct au0828_dev *dev,
 336                            struct usb_interface *interface);
 337 extern int au0828_analog_unregister(struct au0828_dev *dev);
 338 extern void au0828_usb_v4l2_media_release(struct au0828_dev *dev);
 339 extern void au0828_v4l2_suspend(struct au0828_dev *dev);
 340 extern void au0828_v4l2_resume(struct au0828_dev *dev);
 341 #else
 342 static inline int au0828_v4l2_device_register(struct usb_interface *interface,
 343                                               struct au0828_dev *dev)
 344 { return 0; };
 345 static inline int au0828_analog_register(struct au0828_dev *dev,
 346                                      struct usb_interface *interface)
 347 { return 0; };
 348 static inline int au0828_analog_unregister(struct au0828_dev *dev)
 349 { return 0; };
 350 static inline void au0828_usb_v4l2_media_release(struct au0828_dev *dev) { };
 351 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
 352 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
 353 #endif
 354
 355 /* ----------------------------------------------------------- */
 356 /* au0828-dvb.c */
 357 extern int au0828_dvb_register(struct au0828_dev *dev);
 358 extern void au0828_dvb_unregister(struct au0828_dev *dev);
 359 void au0828_dvb_suspend(struct au0828_dev *dev);
 360 void au0828_dvb_resume(struct au0828_dev *dev);
 361
 362 /* au0828-vbi.c */
 363 extern struct vb2_ops au0828_vbi_qops;
 364
 365 #define dprintk(level, fmt, arg...)\
 366         do { if (au0828_debug & level)\
 367                 printk(KERN_DEBUG pr_fmt(fmt), ## arg);\
 368         } while (0)
 369
 370 /* au0828-input.c */
 371 #ifdef CONFIG_VIDEO_AU0828_RC
 372 extern int au0828_rc_register(struct au0828_dev *dev);
 373 extern void au0828_rc_unregister(struct au0828_dev *dev);
 374 extern int au0828_rc_suspend(struct au0828_dev *dev);
 375 extern int au0828_rc_resume(struct au0828_dev *dev);
 376 #else
 377 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
 378 static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
 379 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
 380 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }
 381 #endif