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 #include <linux/usb.h>
  23 #include <linux/i2c.h>
  24 #include <linux/i2c-algo-bit.h>
  25 #include <media/tveeprom.h>
  26
  27 /* Analog */
  28 #include <linux/videodev2.h>
  29 #include <media/videobuf-vmalloc.h>
  30 #include <media/v4l2-device.h>
  31 #include <media/v4l2-ctrls.h>
  32 #include <media/v4l2-fh.h>
  33
  34 /* DVB */
  35 #include "demux.h"
  36 #include "dmxdev.h"
  37 #include "dvb_demux.h"
  38 #include "dvb_frontend.h"
  39 #include "dvb_net.h"
  40 #include "dvbdev.h"
  41
  42 #include "au0828-reg.h"
  43 #include "au0828-cards.h"
  44
  45 #define DRIVER_NAME "au0828"
  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 #define V4L2_CID_PRIVATE_SHARPNESS  (V4L2_CID_PRIVATE_BASE + 0)
  55
  56 /* Defination for AU0828 USB transfer */
  57 #define AU0828_MAX_ISO_BUFS    12  /* maybe resize this value in the future */
  58 #define AU0828_ISO_PACKETS_PER_URB      128
  59
  60 #define AU0828_MIN_BUF 4
  61 #define AU0828_DEF_BUF 8
  62
  63 #define AU0828_MAX_INPUT        4
  64
  65 /* au0828 resource types (used for res_get/res_lock etc */
  66 #define AU0828_RESOURCE_VIDEO 0x01
  67 #define AU0828_RESOURCE_VBI   0x02
  68
  69 enum au0828_itype {
  70         AU0828_VMUX_UNDEFINED = 0,
  71         AU0828_VMUX_COMPOSITE,
  72         AU0828_VMUX_SVIDEO,
  73         AU0828_VMUX_CABLE,
  74         AU0828_VMUX_TELEVISION,
  75         AU0828_VMUX_DVB,
  76         AU0828_VMUX_DEBUG
  77 };
  78
  79 struct au0828_input {
  80         enum au0828_itype type;
  81         unsigned int vmux;
  82         unsigned int amux;
  83         void (*audio_setup) (void *priv, int enable);
  84 };
  85
  86 struct au0828_board {
  87         char *name;
  88         unsigned int tuner_type;
  89         unsigned char tuner_addr;
  90         unsigned char i2c_clk_divider;
  91         struct au0828_input input[AU0828_MAX_INPUT];
  92
  93 };
  94
  95 struct au0828_dvb {
  96         struct mutex lock;
  97         struct dvb_adapter adapter;
  98         struct dvb_frontend *frontend;
  99         struct dvb_demux demux;
 100         struct dmxdev dmxdev;
 101         struct dmx_frontend fe_hw;
 102         struct dmx_frontend fe_mem;
 103         struct dvb_net net;
 104         int feeding;
 105         int start_count;
 106         int stop_count;
 107 };
 108
 109 enum au0828_stream_state {
 110         STREAM_OFF,
 111         STREAM_INTERRUPT,
 112         STREAM_ON
 113 };
 114
 115 #define AUVI_INPUT(nr) (dev->board.input[nr])
 116
 117 /* device state */
 118 enum au0828_dev_state {
 119         DEV_INITIALIZED = 0x01,
 120         DEV_DISCONNECTED = 0x02,
 121         DEV_MISCONFIGURED = 0x04
 122 };
 123
 124 struct au0828_fh {
 125         /* must be the first field of this struct! */
 126         struct v4l2_fh fh;
 127
 128         struct au0828_dev *dev;
 129         unsigned int  resources;
 130
 131         struct videobuf_queue        vb_vidq;
 132         struct videobuf_queue        vb_vbiq;
 133         enum v4l2_buf_type           type;
 134 };
 135
 136 struct au0828_usb_isoc_ctl {
 137                 /* max packet size of isoc transaction */
 138         int                             max_pkt_size;
 139
 140                 /* number of allocated urbs */
 141         int                             num_bufs;
 142
 143                 /* urb for isoc transfers */
 144         struct urb                      **urb;
 145
 146                 /* transfer buffers for isoc transfer */
 147         char                            **transfer_buffer;
 148
 149                 /* Last buffer command and region */
 150         u8                              cmd;
 151         int                             pos, size, pktsize;
 152
 153                 /* Last field: ODD or EVEN? */
 154         int                             field;
 155
 156                 /* Stores incomplete commands */
 157         u32                             tmp_buf;
 158         int                             tmp_buf_len;
 159
 160                 /* Stores already requested buffers */
 161         struct au0828_buffer            *buf;
 162         struct au0828_buffer            *vbi_buf;
 163
 164                 /* Stores the number of received fields */
 165         int                             nfields;
 166
 167                 /* isoc urb callback */
 168         int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
 169
 170 };
 171
 172 /* buffer for one video frame */
 173 struct au0828_buffer {
 174         /* common v4l buffer stuff -- must be first */
 175         struct videobuf_buffer vb;
 176
 177         struct list_head frame;
 178         int top_field;
 179         int receiving;
 180 };
 181
 182 struct au0828_dmaqueue {
 183         struct list_head       active;
 184         struct list_head       queued;
 185
 186         wait_queue_head_t          wq;
 187
 188         /* Counters to control buffer fill */
 189         int                        pos;
 190 };
 191
 192 struct au0828_dev {
 193         struct mutex mutex;
 194         struct usb_device       *usbdev;
 195         int                     boardnr;
 196         struct au0828_board     board;
 197         u8                      ctrlmsg[64];
 198
 199         /* I2C */
 200         struct i2c_adapter              i2c_adap;
 201         struct i2c_algorithm            i2c_algo;
 202         struct i2c_client               i2c_client;
 203         u32                             i2c_rc;
 204
 205         /* Digital */
 206         struct au0828_dvb               dvb;
 207         struct work_struct              restart_streaming;
 208
 209 #ifdef CONFIG_VIDEO_AU0828_V4L2
 210         /* Analog */
 211         struct v4l2_device v4l2_dev;
 212         struct v4l2_ctrl_handler v4l2_ctrl_hdl;
 213 #endif
 214         int users;
 215         unsigned int resources; /* resources in use */
 216         struct video_device *vdev;
 217         struct video_device *vbi_dev;
 218         struct timer_list vid_timeout;
 219         int vid_timeout_running;
 220         struct timer_list vbi_timeout;
 221         int vbi_timeout_running;
 222         int width;
 223         int height;
 224         int vbi_width;
 225         int vbi_height;
 226         u32 vbi_read;
 227         v4l2_std_id std;
 228         u32 field_size;
 229         u32 frame_size;
 230         u32 bytesperline;
 231         int type;
 232         u8 ctrl_ainput;
 233         __u8 isoc_in_endpointaddr;
 234         u8 isoc_init_ok;
 235         int greenscreen_detected;
 236         unsigned int frame_count;
 237         int ctrl_freq;
 238         int input_type;
 239         int std_set_in_tuner_core;
 240         unsigned int ctrl_input;
 241         enum au0828_dev_state dev_state;
 242         enum au0828_stream_state stream_state;
 243         wait_queue_head_t open;
 244
 245         struct mutex lock;
 246
 247         /* Isoc control struct */
 248         struct au0828_dmaqueue vidq;
 249         struct au0828_dmaqueue vbiq;
 250         struct au0828_usb_isoc_ctl isoc_ctl;
 251         spinlock_t slock;
 252
 253         /* usb transfer */
 254         int alt;                /* alternate */
 255         int max_pkt_size;       /* max packet size of isoc transaction */
 256         int num_alt;            /* Number of alternative settings */
 257         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 258         struct urb *urb[AU0828_MAX_ISO_BUFS];   /* urb for isoc transfers */
 259         char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
 260                                                    transfer */
 261
 262         /* USB / URB Related */
 263         int             urb_streaming;
 264         struct urb      *urbs[URB_COUNT];
 265
 266         /* Preallocated transfer digital transfer buffers */
 267
 268         char *dig_transfer_buffer[URB_COUNT];
 269 };
 270
 271 /* ----------------------------------------------------------- */
 272 #define au0828_read(dev, reg) au0828_readreg(dev, reg)
 273 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
 274 #define au0828_andor(dev, reg, mask, value)                             \
 275          au0828_writereg(dev, reg,                                      \
 276         (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
 277
 278 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
 279 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
 280
 281 /* ----------------------------------------------------------- */
 282 /* au0828-core.c */
 283 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
 284 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
 285 extern int au0828_debug;
 286
 287 /* ----------------------------------------------------------- */
 288 /* au0828-cards.c */
 289 extern struct au0828_board au0828_boards[];
 290 extern struct usb_device_id au0828_usb_id_table[];
 291 extern void au0828_gpio_setup(struct au0828_dev *dev);
 292 extern int au0828_tuner_callback(void *priv, int component,
 293                                  int command, int arg);
 294 extern void au0828_card_setup(struct au0828_dev *dev);
 295
 296 /* ----------------------------------------------------------- */
 297 /* au0828-i2c.c */
 298 extern int au0828_i2c_register(struct au0828_dev *dev);
 299 extern int au0828_i2c_unregister(struct au0828_dev *dev);
 300
 301 /* ----------------------------------------------------------- */
 302 /* au0828-video.c */
 303 int au0828_analog_register(struct au0828_dev *dev,
 304                            struct usb_interface *interface);
 305 int au0828_analog_stream_disable(struct au0828_dev *d);
 306 void au0828_analog_unregister(struct au0828_dev *dev);
 307
 308 /* ----------------------------------------------------------- */
 309 /* au0828-dvb.c */
 310 extern int au0828_dvb_register(struct au0828_dev *dev);
 311 extern void au0828_dvb_unregister(struct au0828_dev *dev);
 312
 313 /* au0828-vbi.c */
 314 extern struct videobuf_queue_ops au0828_vbi_qops;
 315
 316 #define dprintk(level, fmt, arg...)\
 317         do { if (au0828_debug & level)\
 318                 printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
 319         } while (0)