drivers/media/video/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
  32 /* DVB */
  33 #include "demux.h"
  34 #include "dmxdev.h"
  35 #include "dvb_demux.h"
  36 #include "dvb_frontend.h"
  37 #include "dvb_net.h"
  38 #include "dvbdev.h"
  39
  40 #include "au0828-reg.h"
  41 #include "au0828-cards.h"
  42
  43 #define DRIVER_NAME "au0828"
  44 #define URB_COUNT   16
  45 #define URB_BUFSIZE (0xe522)
  46
  47 /* Analog constants */
  48 #define NTSC_STD_W      720
  49 #define NTSC_STD_H      480
  50
  51 #define AU0828_INTERLACED_DEFAULT       1
  52 #define V4L2_CID_PRIVATE_SHARPNESS  (V4L2_CID_PRIVATE_BASE + 0)
  53
  54 /* Defination for AU0828 USB transfer */
  55 #define AU0828_MAX_ISO_BUFS    12  /* maybe resize this value in the future */
  56 #define AU0828_ISO_PACKETS_PER_URB      10
  57
  58 #define AU0828_MIN_BUF 4
  59 #define AU0828_DEF_BUF 8
  60
  61 #define AU0828_MAX_INPUT        4
  62
  63 enum au0828_itype {
  64         AU0828_VMUX_UNDEFINED = 0,
  65         AU0828_VMUX_COMPOSITE,
  66         AU0828_VMUX_SVIDEO,
  67         AU0828_VMUX_CABLE,
  68         AU0828_VMUX_TELEVISION,
  69         AU0828_VMUX_DVB,
  70         AU0828_VMUX_DEBUG
  71 };
  72
  73 struct au0828_input {
  74         enum au0828_itype type;
  75         unsigned int vmux;
  76         unsigned int amux;
  77         void (*audio_setup) (void *priv, int enable);
  78 };
  79
  80 struct au0828_board {
  81         char *name;
  82         unsigned int tuner_type;
  83         unsigned char tuner_addr;
  84         unsigned char i2c_clk_divider;
  85         struct au0828_input input[AU0828_MAX_INPUT];
  86
  87 };
  88
  89 struct au0828_dvb {
  90         struct mutex lock;
  91         struct dvb_adapter adapter;
  92         struct dvb_frontend *frontend;
  93         struct dvb_demux demux;
  94         struct dmxdev dmxdev;
  95         struct dmx_frontend fe_hw;
  96         struct dmx_frontend fe_mem;
  97         struct dvb_net net;
  98         int feeding;
  99 };
 100
 101 enum au0828_stream_state {
 102         STREAM_OFF,
 103         STREAM_INTERRUPT,
 104         STREAM_ON
 105 };
 106
 107 #define AUVI_INPUT(nr) (dev->board.input[nr])
 108
 109 /* device state */
 110 enum au0828_dev_state {
 111         DEV_INITIALIZED = 0x01,
 112         DEV_DISCONNECTED = 0x02,
 113         DEV_MISCONFIGURED = 0x04
 114 };
 115
 116 struct au0828_fh {
 117         struct au0828_dev *dev;
 118         unsigned int  stream_on:1;      /* Locks streams */
 119         struct videobuf_queue        vb_vidq;
 120         enum v4l2_buf_type           type;
 121 };
 122
 123 struct au0828_usb_isoc_ctl {
 124                 /* max packet size of isoc transaction */
 125         int                             max_pkt_size;
 126
 127                 /* number of allocated urbs */
 128         int                             num_bufs;
 129
 130                 /* urb for isoc transfers */
 131         struct urb                      **urb;
 132
 133                 /* transfer buffers for isoc transfer */
 134         char                            **transfer_buffer;
 135
 136                 /* Last buffer command and region */
 137         u8                              cmd;
 138         int                             pos, size, pktsize;
 139
 140                 /* Last field: ODD or EVEN? */
 141         int                             field;
 142
 143                 /* Stores incomplete commands */
 144         u32                             tmp_buf;
 145         int                             tmp_buf_len;
 146
 147                 /* Stores already requested buffers */
 148         struct au0828_buffer            *buf;
 149
 150                 /* Stores the number of received fields */
 151         int                             nfields;
 152
 153                 /* isoc urb callback */
 154         int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
 155
 156 };
 157
 158 /* buffer for one video frame */
 159 struct au0828_buffer {
 160         /* common v4l buffer stuff -- must be first */
 161         struct videobuf_buffer vb;
 162
 163         struct list_head frame;
 164         int top_field;
 165         int receiving;
 166 };
 167
 168 struct au0828_dmaqueue {
 169         struct list_head       active;
 170         struct list_head       queued;
 171
 172         wait_queue_head_t          wq;
 173
 174         /* Counters to control buffer fill */
 175         int                        pos;
 176 };
 177
 178 struct au0828_dev {
 179         struct mutex mutex;
 180         struct usb_device       *usbdev;
 181         int                     boardnr;
 182         struct au0828_board     board;
 183         u8                      ctrlmsg[64];
 184
 185         /* I2C */
 186         struct i2c_adapter              i2c_adap;
 187         struct i2c_algorithm            i2c_algo;
 188         struct i2c_client               i2c_client;
 189         u32                             i2c_rc;
 190
 191         /* Digital */
 192         struct au0828_dvb               dvb;
 193
 194         /* Analog */
 195         struct v4l2_device v4l2_dev;
 196         int users;
 197         unsigned int stream_on:1;       /* Locks streams */
 198         struct video_device *vdev;
 199         struct video_device *vbi_dev;
 200         int width;
 201         int height;
 202         u32 field_size;
 203         u32 frame_size;
 204         u32 bytesperline;
 205         int type;
 206         u8 ctrl_ainput;
 207         __u8 isoc_in_endpointaddr;
 208         u8 isoc_init_ok;
 209         int greenscreen_detected;
 210         unsigned int frame_count;
 211         int ctrl_freq;
 212         int input_type;
 213         unsigned int ctrl_input;
 214         enum au0828_dev_state dev_state;
 215         enum au0828_stream_state stream_state;
 216         wait_queue_head_t open;
 217
 218         struct mutex lock;
 219
 220         /* Isoc control struct */
 221         struct au0828_dmaqueue vidq;
 222         struct au0828_usb_isoc_ctl isoc_ctl;
 223         spinlock_t slock;
 224
 225         /* usb transfer */
 226         int alt;                /* alternate */
 227         int max_pkt_size;       /* max packet size of isoc transaction */
 228         int num_alt;            /* Number of alternative settings */
 229         unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 230         struct urb *urb[AU0828_MAX_ISO_BUFS];   /* urb for isoc transfers */
 231         char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
 232                                                    transfer */
 233
 234         /* USB / URB Related */
 235         int             urb_streaming;
 236         struct urb      *urbs[URB_COUNT];
 237 };
 238
 239 /* ----------------------------------------------------------- */
 240 #define au0828_read(dev, reg) au0828_readreg(dev, reg)
 241 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
 242 #define au0828_andor(dev, reg, mask, value)                             \
 243          au0828_writereg(dev, reg,                                      \
 244         (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
 245
 246 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
 247 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
 248
 249 /* ----------------------------------------------------------- */
 250 /* au0828-core.c */
 251 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
 252 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
 253 extern int au0828_debug;
 254
 255 /* ----------------------------------------------------------- */
 256 /* au0828-cards.c */
 257 extern struct au0828_board au0828_boards[];
 258 extern struct usb_device_id au0828_usb_id_table[];
 259 extern void au0828_gpio_setup(struct au0828_dev *dev);
 260 extern int au0828_tuner_callback(void *priv, int component,
 261                                  int command, int arg);
 262 extern void au0828_card_setup(struct au0828_dev *dev);
 263
 264 /* ----------------------------------------------------------- */
 265 /* au0828-i2c.c */
 266 extern int au0828_i2c_register(struct au0828_dev *dev);
 267 extern int au0828_i2c_unregister(struct au0828_dev *dev);
 268
 269 /* ----------------------------------------------------------- */
 270 /* au0828-video.c */
 271 int au0828_analog_register(struct au0828_dev *dev,
 272                            struct usb_interface *interface);
 273 int au0828_analog_stream_disable(struct au0828_dev *d);
 274 void au0828_analog_unregister(struct au0828_dev *dev);
 275
 276 /* ----------------------------------------------------------- */
 277 /* au0828-dvb.c */
 278 extern int au0828_dvb_register(struct au0828_dev *dev);
 279 extern void au0828_dvb_unregister(struct au0828_dev *dev);
 280
 281 #define dprintk(level, fmt, arg...)\
 282         do { if (au0828_debug & level)\
 283                 printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
 284         } while (0)