drivers/media/dvb/dvb-usb/dvb-usb.h

   1 /* dvb-usb.h is part of the DVB USB library.
   2  *
   3  * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
   4  * see dvb-usb-init.c for copyright information.
   5  *
   6  * the headerfile, all dvb-usb-drivers have to include.
   7  *
   8  * TODO: clean-up the structures for unused fields and update the comments
   9  */
  10 #ifndef __DVB_USB_H__
  11 #define __DVB_USB_H__
  12
  13 #include <linux/input.h>
  14 #include <linux/usb.h>
  15 #include <linux/firmware.h>
  16 #include <linux/mutex.h>
  17
  18 #include "dvb_frontend.h"
  19 #include "dvb_demux.h"
  20 #include "dvb_net.h"
  21 #include "dmxdev.h"
  22
  23 #include "dvb-pll.h"
  24
  25 #include "dvb-usb-ids.h"
  26
  27 /* debug */
  28 #ifdef CONFIG_DVB_USB_DEBUG
  29 #define dprintk(var,level,args...) \
  30             do { if ((var & level)) { printk(args); } } while (0)
  31
  32 #define debug_dump(b,l,func) {\
  33         int loop_; \
  34         for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \
  35         func("\n");\
  36 }
  37 #define DVB_USB_DEBUG_STATUS
  38 #else
  39 #define dprintk(args...)
  40 #define debug_dump(b,l,func)
  41
  42 #define DVB_USB_DEBUG_STATUS " (debugging is not enabled)"
  43
  44 #endif
  45
  46 /* generic log methods - taken from usb.h */
  47 #ifndef DVB_USB_LOG_PREFIX
  48  #define DVB_USB_LOG_PREFIX "dvb-usb (please define a log prefix)"
  49 #endif
  50
  51 #undef err
  52 #define err(format, arg...)  printk(KERN_ERR     DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  53 #undef info
  54 #define info(format, arg...) printk(KERN_INFO    DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  55 #undef warn
  56 #define warn(format, arg...) printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  57
  58 /**
  59  * struct dvb_usb_device_description - name and its according USB IDs
  60  * @name: real name of the box, regardless which DVB USB device class is in use
  61  * @cold_ids: array of struct usb_device_id which describe the device in
  62  *  pre-firmware state
  63  * @warm_ids: array of struct usb_device_id which describe the device in
  64  *  post-firmware state
  65  *
  66  * Each DVB USB device class can have one or more actual devices, this struct
  67  * assigns a name to it.
  68  */
  69 struct dvb_usb_device_description {
  70         const char *name;
  71
  72 #define DVB_USB_ID_MAX_NUM 15
  73         struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
  74         struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
  75 };
  76
  77 /**
  78  * struct dvb_usb_rc_key - a remote control key and its input-event
  79  * @custom: the vendor/custom part of the key
  80  * @data: the actual key part
  81  * @event: the input event assigned to key identified by custom and data
  82  */
  83 struct dvb_usb_rc_key {
  84         u8 custom,data;
  85         u32 event;
  86 };
  87
  88 struct dvb_usb_device;
  89 struct dvb_usb_adapter;
  90 struct usb_data_stream;
  91
  92 /**
  93  * Properties of USB streaming - TODO this structure should be somewhere else
  94  * describes the kind of USB transfer used for data-streaming.
  95  *  (BULK or ISOC)
  96  */
  97 struct usb_data_stream_properties {
  98 #define USB_BULK  1
  99 #define USB_ISOC  2
 100         int type;
 101         int count;
 102         int endpoint;
 103
 104         union {
 105                 struct {
 106                         int buffersize; /* per URB */
 107                 } bulk;
 108                 struct {
 109                         int framesperurb;
 110                         int framesize;
 111                         int interval;
 112                 } isoc;
 113         } u;
 114 };
 115
 116 /**
 117  * struct dvb_usb_adapter_properties - properties of a dvb-usb-adapter.
 118  *    A DVB-USB-Adapter is basically a dvb_adapter which is present on a USB-device.
 119  * @caps: capabilities of the DVB USB device.
 120  * @pid_filter_count: number of PID filter position in the optional hardware
 121  *  PID-filter.
 122  * @streaming_ctrl: called to start and stop the MPEG2-TS streaming of the
 123  *  device (not URB submitting/killing).
 124  * @pid_filter_ctrl: called to en/disable the PID filter, if any.
 125  * @pid_filter: called to set/unset a PID for filtering.
 126  * @frontend_attach: called to attach the possible frontends (fill fe-field
 127  *  of struct dvb_usb_device).
 128  * @tuner_attach: called to attach the correct tuner and to fill pll_addr,
 129  *  pll_desc and pll_init_buf of struct dvb_usb_device).
 130  * @stream: configuration of the USB streaming
 131  */
 132 struct dvb_usb_adapter_properties {
 133 #define DVB_USB_ADAP_HAS_PID_FILTER               0x01
 134 #define DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF 0x02
 135 #define DVB_USB_ADAP_NEED_PID_FILTERING           0x04
 136 #define DVB_USB_ADAP_RECEIVES_204_BYTE_TS         0x08
 137         int caps;
 138         int pid_filter_count;
 139
 140         int (*streaming_ctrl)  (struct dvb_usb_adapter *, int);
 141         int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int);
 142         int (*pid_filter)      (struct dvb_usb_adapter *, int, u16, int);
 143
 144         int (*frontend_attach) (struct dvb_usb_adapter *);
 145         int (*tuner_attach)    (struct dvb_usb_adapter *);
 146
 147         struct usb_data_stream_properties stream;
 148
 149         int size_of_priv;
 150 };
 151
 152 /**
 153  * struct dvb_usb_device_properties - properties of a dvb-usb-device
 154  * @usb_ctrl: which USB device-side controller is in use. Needed for firmware
 155  *  download.
 156  * @firmware: name of the firmware file.
 157  * @download_firmware: called to download the firmware when the usb_ctrl is
 158  *  DEVICE_SPECIFIC.
 159  * @no_reconnect: device doesn't do a reconnect after downloading the firmware,
 160  *  so do the warm initialization right after it
 161  *
 162  * @size_of_priv: how many bytes shall be allocated for the private field
 163  *  of struct dvb_usb_device.
 164  *
 165  * @power_ctrl: called to enable/disable power of the device.
 166  * @read_mac_address: called to read the MAC address of the device.
 167  * @identify_state: called to determine the state (cold or warm), when it
 168  *  is not distinguishable by the USB IDs.
 169  *
 170  * @rc_key_map: a hard-wired array of struct dvb_usb_rc_key (NULL to disable
 171  *  remote control handling).
 172  * @rc_key_map_size: number of items in @rc_key_map.
 173  * @rc_query: called to query an event event.
 174  * @rc_interval: time in ms between two queries.
 175  *
 176  * @i2c_algo: i2c_algorithm if the device has I2CoverUSB.
 177  *
 178  * @generic_bulk_ctrl_endpoint: most of the DVB USB devices have a generic
 179  *  endpoint which received control messages with bulk transfers. When this
 180  *  is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write-
 181  *  helper functions.
 182  *
 183  * @num_device_descs: number of struct dvb_usb_device_description in @devices
 184  * @devices: array of struct dvb_usb_device_description compatibles with these
 185  *  properties.
 186  */
 187 #define MAX_NO_OF_ADAPTER_PER_DEVICE 2
 188 struct dvb_usb_device_properties {
 189
 190 #define DVB_USB_IS_AN_I2C_ADAPTER            0x01
 191         int caps;
 192
 193 #define DEVICE_SPECIFIC 0
 194 #define CYPRESS_AN2135  1
 195 #define CYPRESS_AN2235  2
 196 #define CYPRESS_FX2     3
 197         int        usb_ctrl;
 198         int        (*download_firmware) (struct usb_device *, const struct firmware *);
 199         const char firmware[FIRMWARE_NAME_MAX];
 200         int        no_reconnect;
 201
 202         int size_of_priv;
 203
 204         int num_adapters;
 205         struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
 206
 207         int (*power_ctrl)       (struct dvb_usb_device *, int);
 208         int (*read_mac_address) (struct dvb_usb_device *, u8 []);
 209         int (*identify_state)   (struct usb_device *, struct dvb_usb_device_properties *,
 210                         struct dvb_usb_device_description **, int *);
 211
 212 /* remote control properties */
 213 #define REMOTE_NO_KEY_PRESSED      0x00
 214 #define REMOTE_KEY_PRESSED         0x01
 215 #define REMOTE_KEY_REPEAT          0x02
 216         struct dvb_usb_rc_key  *rc_key_map;
 217         int rc_key_map_size;
 218         int (*rc_query) (struct dvb_usb_device *, u32 *, int *);
 219         int rc_interval;
 220
 221         struct i2c_algorithm *i2c_algo;
 222
 223         int generic_bulk_ctrl_endpoint;
 224
 225         int num_device_descs;
 226         struct dvb_usb_device_description devices[9];
 227 };
 228
 229 /**
 230  * struct usb_data_stream - generic object of an USB stream
 231  * @buf_num: number of buffer allocated.
 232  * @buf_size: size of each buffer in buf_list.
 233  * @buf_list: array containing all allocate buffers for streaming.
 234  * @dma_addr: list of dma_addr_t for each buffer in buf_list.
 235  *
 236  * @urbs_initialized: number of URBs initialized.
 237  * @urbs_submitted: number of URBs submitted.
 238  */
 239 #define MAX_NO_URBS_FOR_DATA_STREAM 10
 240 struct usb_data_stream {
 241         struct usb_device                 *udev;
 242         struct usb_data_stream_properties  props;
 243
 244 #define USB_STATE_INIT    0x00
 245 #define USB_STATE_URB_BUF 0x01
 246         int state;
 247
 248         void (*complete) (struct usb_data_stream *, u8 *, size_t);
 249
 250         struct urb    *urb_list[MAX_NO_URBS_FOR_DATA_STREAM];
 251         int            buf_num;
 252         unsigned long  buf_size;
 253         u8            *buf_list[MAX_NO_URBS_FOR_DATA_STREAM];
 254         dma_addr_t     dma_addr[MAX_NO_URBS_FOR_DATA_STREAM];
 255
 256         int urbs_initialized;
 257         int urbs_submitted;
 258
 259         void *user_priv;
 260 };
 261
 262 /**
 263  * struct dvb_usb_adapter - a DVB adapter on a USB device
 264  * @id: index of this adapter (starting with 0).
 265  *
 266  * @feedcount: number of reqested feeds (used for streaming-activation)
 267  * @pid_filtering: is hardware pid_filtering used or not.
 268  *
 269  * @pll_addr: I2C address of the tuner for programming
 270  * @pll_init: array containing the initialization buffer
 271  * @pll_desc: pointer to the appropriate struct dvb_pll_desc
 272  * @tuner_pass_ctrl: called to (de)activate tuner passthru of the demod or the board
 273  *
 274  * @dvb_adap: device's dvb_adapter.
 275  * @dmxdev: device's dmxdev.
 276  * @demux: device's software demuxer.
 277  * @dvb_net: device's dvb_net interfaces.
 278  * @dvb_frontend: device's frontend.
 279  * @max_feed_count: how many feeds can be handled simultaneously by this
 280  *  device
 281  *
 282  * @fe_init:  rerouted frontend-init (wakeup) function.
 283  * @fe_sleep: rerouted frontend-sleep function.
 284  *
 285  * @stream: the usb data stream.
 286  */
 287 struct dvb_usb_adapter {
 288         struct dvb_usb_device *dev;
 289         struct dvb_usb_adapter_properties props;
 290
 291 #define DVB_USB_ADAP_STATE_INIT 0x000
 292 #define DVB_USB_ADAP_STATE_DVB  0x001
 293         int state;
 294
 295         u8  id;
 296
 297         int feedcount;
 298         int pid_filtering;
 299
 300         /* dvb */
 301         struct dvb_adapter   dvb_adap;
 302         struct dmxdev        dmxdev;
 303         struct dvb_demux     demux;
 304         struct dvb_net       dvb_net;
 305         struct dvb_frontend *fe;
 306         int                  max_feed_count;
 307
 308         int (*fe_init)  (struct dvb_frontend *);
 309         int (*fe_sleep) (struct dvb_frontend *);
 310
 311         struct usb_data_stream stream;
 312
 313         void *priv;
 314 };
 315
 316 /**
 317  * struct dvb_usb_device - object of a DVB USB device
 318  * @props: copy of the struct dvb_usb_properties this device belongs to.
 319  * @desc: pointer to the device's struct dvb_usb_device_description.
 320  * @state: initialization and runtime state of the device.
 321  *
 322  * @powered: indicated whether the device is power or not.
 323  *  Powered is in/decremented for each call to modify the state.
 324  * @udev: pointer to the device's struct usb_device.
 325  *
 326  * @usb_mutex: semaphore of USB control messages (reading needs two messages)
 327  * @i2c_mutex: semaphore for i2c-transfers
 328  *
 329  * @i2c_adap: device's i2c_adapter if it uses I2CoverUSB
 330  *
 331  * @rc_input_dev: input device for the remote control.
 332  * @rc_query_work: struct work_struct frequent rc queries
 333  * @last_event: last triggered event
 334  * @last_state: last state (no, pressed, repeat)
 335  * @owner: owner of the dvb_adapter
 336  * @priv: private data of the actual driver (allocate by dvb-usb, size defined
 337  *  in size_of_priv of dvb_usb_properties).
 338  */
 339 struct dvb_usb_device {
 340         struct dvb_usb_device_properties props;
 341         struct dvb_usb_device_description *desc;
 342
 343         struct usb_device *udev;
 344
 345 #define DVB_USB_STATE_INIT        0x000
 346 #define DVB_USB_STATE_I2C         0x001
 347 #define DVB_USB_STATE_DVB         0x002
 348 #define DVB_USB_STATE_REMOTE      0x004
 349         int state;
 350
 351         int powered;
 352
 353         /* locking */
 354         struct mutex usb_mutex;
 355
 356         /* i2c */
 357         struct mutex i2c_mutex;
 358         struct i2c_adapter i2c_adap;
 359
 360         int                    num_adapters_initialized;
 361         struct dvb_usb_adapter adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
 362
 363         /* remote control */
 364         struct input_dev *rc_input_dev;
 365         char rc_phys[64];
 366         struct delayed_work rc_query_work;
 367         u32 last_event;
 368         int last_state;
 369
 370         struct module *owner;
 371
 372         void *priv;
 373 };
 374
 375 extern int dvb_usb_device_init(struct usb_interface *, struct dvb_usb_device_properties *, struct module *, struct dvb_usb_device **);
 376 extern void dvb_usb_device_exit(struct usb_interface *);
 377
 378 /* the generic read/write method for device control */
 379 extern int dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16,int);
 380 extern int dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);
 381
 382 /* commonly used remote control parsing */
 383 extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);
 384
 385 /* commonly used firmware download types and function */
 386 struct hexline {
 387         u8 len;
 388         u32 addr;
 389         u8 type;
 390         u8 data[255];
 391         u8 chk;
 392 };
 393 extern int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type);
 394 extern int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, int *pos);
 395
 396
 397 #endif