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