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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* dvb-usb.h is part of the DVB USB library.
   3  *
   4  * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de)
   5  * see dvb-usb-init.c for copyright information.
   6  *
   7  * the headerfile, all dvb-usb-drivers have to include.
   8  *
   9  * TODO: clean-up the structures for unused fields and update the comments
  10  */
  11 #ifndef __DVB_USB_H__
  12 #define __DVB_USB_H__
  13
  14 #include <linux/input.h>
  15 #include <linux/usb.h>
  16 #include <linux/firmware.h>
  17 #include <linux/mutex.h>
  18 #include <media/rc-core.h>
  19
  20 #include <media/dvb_frontend.h>
  21 #include <media/dvb_demux.h>
  22 #include <media/dvb_net.h>
  23 #include <media/dmxdev.h>
  24
  25 #include "dvb-pll.h"
  26
  27 #include <media/dvb-usb-ids.h>
  28
  29 /* debug */
  30 #ifdef CONFIG_DVB_USB_DEBUG
  31 #define dprintk(var,level,args...) \
  32             do { if ((var & level)) { printk(args); } } while (0)
  33
  34 #define debug_dump(b,l,func) {\
  35         int loop_; \
  36         for (loop_ = 0; loop_ < l; loop_++) func("%02x ", b[loop_]); \
  37         func("\n");\
  38 }
  39 #define DVB_USB_DEBUG_STATUS
  40 #else
  41 #define dprintk(args...)
  42 #define debug_dump(b,l,func)
  43
  44 #define DVB_USB_DEBUG_STATUS " (debugging is not enabled)"
  45
  46 #endif
  47
  48 /* generic log methods - taken from usb.h */
  49 #ifndef DVB_USB_LOG_PREFIX
  50  #define DVB_USB_LOG_PREFIX "dvb-usb (please define a log prefix)"
  51 #endif
  52
  53 #undef err
  54 #define err(format, arg...)  printk(KERN_ERR     DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  55 #undef info
  56 #define info(format, arg...) printk(KERN_INFO    DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  57 #undef warn
  58 #define warn(format, arg...) printk(KERN_WARNING DVB_USB_LOG_PREFIX ": " format "\n" , ## arg)
  59
  60 /**
  61  * struct dvb_usb_device_description - name and its according USB IDs
  62  * @name: real name of the box, regardless which DVB USB device class is in use
  63  * @cold_ids: array of struct usb_device_id which describe the device in
  64  *  pre-firmware state
  65  * @warm_ids: array of struct usb_device_id which describe the device in
  66  *  post-firmware state
  67  *
  68  * Each DVB USB device class can have one or more actual devices, this struct
  69  * assigns a name to it.
  70  */
  71 struct dvb_usb_device_description {
  72         const char *name;
  73
  74 #define DVB_USB_ID_MAX_NUM 15
  75         struct usb_device_id *cold_ids[DVB_USB_ID_MAX_NUM];
  76         struct usb_device_id *warm_ids[DVB_USB_ID_MAX_NUM];
  77 };
  78
  79 static inline u8 rc5_custom(struct rc_map_table *key)
  80 {
  81         return (key->scancode >> 8) & 0xff;
  82 }
  83
  84 static inline u8 rc5_data(struct rc_map_table *key)
  85 {
  86         return key->scancode & 0xff;
  87 }
  88
  89 static inline u16 rc5_scan(struct rc_map_table *key)
  90 {
  91         return key->scancode & 0xffff;
  92 }
  93
  94 struct dvb_usb_device;
  95 struct dvb_usb_adapter;
  96 struct usb_data_stream;
  97
  98 /**
  99  * Properties of USB streaming - TODO this structure should be somewhere else
 100  * describes the kind of USB transfer used for data-streaming.
 101  *  (BULK or ISOC)
 102  */
 103 struct usb_data_stream_properties {
 104 #define USB_BULK  1
 105 #define USB_ISOC  2
 106         int type;
 107         int count;
 108         int endpoint;
 109
 110         union {
 111                 struct {
 112                         int buffersize; /* per URB */
 113                 } bulk;
 114                 struct {
 115                         int framesperurb;
 116                         int framesize;
 117                         int interval;
 118                 } isoc;
 119         } u;
 120 };
 121
 122 /**
 123  * struct dvb_usb_adapter_properties - properties of a dvb-usb-adapter.
 124  *    A DVB-USB-Adapter is basically a dvb_adapter which is present on a USB-device.
 125  * @caps: capabilities of the DVB USB device.
 126  * @pid_filter_count: number of PID filter position in the optional hardware
 127  *  PID-filter.
 128  * @num_frontends: number of frontends of the DVB USB adapter.
 129  * @frontend_ctrl: called to power on/off active frontend.
 130  * @streaming_ctrl: called to start and stop the MPEG2-TS streaming of the
 131  *  device (not URB submitting/killing).
 132  * @pid_filter_ctrl: called to en/disable the PID filter, if any.
 133  * @pid_filter: called to set/unset a PID for filtering.
 134  * @frontend_attach: called to attach the possible frontends (fill fe-field
 135  *  of struct dvb_usb_device).
 136  * @tuner_attach: called to attach the correct tuner and to fill pll_addr,
 137  *  pll_desc and pll_init_buf of struct dvb_usb_device).
 138  * @stream: configuration of the USB streaming
 139  */
 140 struct dvb_usb_adapter_fe_properties {
 141 #define DVB_USB_ADAP_HAS_PID_FILTER               0x01
 142 #define DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF 0x02
 143 #define DVB_USB_ADAP_NEED_PID_FILTERING           0x04
 144 #define DVB_USB_ADAP_RECEIVES_204_BYTE_TS         0x08
 145 #define DVB_USB_ADAP_RECEIVES_RAW_PAYLOAD         0x10
 146         int caps;
 147         int pid_filter_count;
 148
 149         int (*streaming_ctrl)  (struct dvb_usb_adapter *, int);
 150         int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int);
 151         int (*pid_filter)      (struct dvb_usb_adapter *, int, u16, int);
 152
 153         int (*frontend_attach) (struct dvb_usb_adapter *);
 154         int (*tuner_attach)    (struct dvb_usb_adapter *);
 155
 156         struct usb_data_stream_properties stream;
 157
 158         int size_of_priv;
 159 };
 160
 161 #define MAX_NO_OF_FE_PER_ADAP 3
 162 struct dvb_usb_adapter_properties {
 163         int size_of_priv;
 164
 165         int (*frontend_ctrl)   (struct dvb_frontend *, int);
 166
 167         int num_frontends;
 168         struct dvb_usb_adapter_fe_properties fe[MAX_NO_OF_FE_PER_ADAP];
 169 };
 170
 171 /**
 172  * struct dvb_rc_legacy - old properties of remote controller
 173  * @rc_map_table: a hard-wired array of struct rc_map_table (NULL to disable
 174  *  remote control handling).
 175  * @rc_map_size: number of items in @rc_map_table.
 176  * @rc_query: called to query an event event.
 177  * @rc_interval: time in ms between two queries.
 178  */
 179 struct dvb_rc_legacy {
 180 /* remote control properties */
 181 #define REMOTE_NO_KEY_PRESSED      0x00
 182 #define REMOTE_KEY_PRESSED         0x01
 183 #define REMOTE_KEY_REPEAT          0x02
 184         struct rc_map_table  *rc_map_table;
 185         int rc_map_size;
 186         int (*rc_query) (struct dvb_usb_device *, u32 *, int *);
 187         int rc_interval;
 188 };
 189
 190 /**
 191  * struct dvb_rc properties of remote controller, using rc-core
 192  * @rc_codes: name of rc codes table
 193  * @protocol: type of protocol(s) currently used by the driver
 194  * @allowed_protos: protocol(s) supported by the driver
 195  * @driver_type: Used to point if a device supports raw mode
 196  * @change_protocol: callback to change protocol
 197  * @rc_query: called to query an event event.
 198  * @rc_interval: time in ms between two queries.
 199  * @bulk_mode: device supports bulk mode for RC (disable polling mode)
 200  */
 201 struct dvb_rc {
 202         char *rc_codes;
 203         u64 protocol;
 204         u64 allowed_protos;
 205         enum rc_driver_type driver_type;
 206         int (*change_protocol)(struct rc_dev *dev, u64 *rc_proto);
 207         char *module_name;
 208         int (*rc_query) (struct dvb_usb_device *d);
 209         int rc_interval;
 210         bool bulk_mode;                         /* uses bulk mode */
 211         u32 scancode_mask;
 212 };
 213
 214 /**
 215  * enum dvb_usb_mode - Specifies if it is using a legacy driver or a new one
 216  *                     based on rc-core
 217  * This is initialized/used only inside dvb-usb-remote.c.
 218  * It shouldn't be set by the drivers.
 219  */
 220 enum dvb_usb_mode {
 221         DVB_RC_LEGACY,
 222         DVB_RC_CORE,
 223 };
 224
 225 /**
 226  * struct dvb_usb_device_properties - properties of a dvb-usb-device
 227  * @usb_ctrl: which USB device-side controller is in use. Needed for firmware
 228  *  download.
 229  * @firmware: name of the firmware file.
 230  * @download_firmware: called to download the firmware when the usb_ctrl is
 231  *  DEVICE_SPECIFIC.
 232  * @no_reconnect: device doesn't do a reconnect after downloading the firmware,
 233  *  so do the warm initialization right after it
 234  *
 235  * @size_of_priv: how many bytes shall be allocated for the private field
 236  *  of struct dvb_usb_device.
 237  *
 238  * @power_ctrl: called to enable/disable power of the device.
 239  * @read_mac_address: called to read the MAC address of the device.
 240  * @identify_state: called to determine the state (cold or warm), when it
 241  *  is not distinguishable by the USB IDs.
 242  *
 243  * @rc: remote controller properties
 244  *
 245  * @i2c_algo: i2c_algorithm if the device has I2CoverUSB.
 246  *
 247  * @generic_bulk_ctrl_endpoint: most of the DVB USB devices have a generic
 248  *  endpoint which received control messages with bulk transfers. When this
 249  *  is non-zero, one can use dvb_usb_generic_rw and dvb_usb_generic_write-
 250  *  helper functions.
 251  *
 252  * @generic_bulk_ctrl_endpoint_response: some DVB USB devices use a separate
 253  *  endpoint for responses to control messages sent with bulk transfers via
 254  *  the generic_bulk_ctrl_endpoint. When this is non-zero, this will be used
 255  *  instead of the generic_bulk_ctrl_endpoint when reading usb responses in
 256  *  the dvb_usb_generic_rw helper function.
 257  *
 258  * @num_device_descs: number of struct dvb_usb_device_description in @devices
 259  * @devices: array of struct dvb_usb_device_description compatibles with these
 260  *  properties.
 261  */
 262 #define MAX_NO_OF_ADAPTER_PER_DEVICE 2
 263 struct dvb_usb_device_properties {
 264
 265 #define DVB_USB_IS_AN_I2C_ADAPTER            0x01
 266         int caps;
 267
 268 #define DEVICE_SPECIFIC 0
 269 #define CYPRESS_AN2135  1
 270 #define CYPRESS_AN2235  2
 271 #define CYPRESS_FX2     3
 272         int        usb_ctrl;
 273         int        (*download_firmware) (struct usb_device *, const struct firmware *);
 274         const char *firmware;
 275         int        no_reconnect;
 276
 277         int size_of_priv;
 278
 279         int num_adapters;
 280         struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
 281
 282         int (*power_ctrl)       (struct dvb_usb_device *, int);
 283         int (*read_mac_address) (struct dvb_usb_device *, u8 []);
 284         int (*identify_state)   (struct usb_device *, struct dvb_usb_device_properties *,
 285                         struct dvb_usb_device_description **, int *);
 286
 287         struct {
 288                 enum dvb_usb_mode mode; /* Drivers shouldn't touch on it */
 289                 struct dvb_rc_legacy legacy;
 290                 struct dvb_rc core;
 291         } rc;
 292
 293         struct i2c_algorithm *i2c_algo;
 294
 295         int generic_bulk_ctrl_endpoint;
 296         int generic_bulk_ctrl_endpoint_response;
 297
 298         int num_device_descs;
 299         struct dvb_usb_device_description devices[12];
 300 };
 301
 302 /**
 303  * struct usb_data_stream - generic object of an USB stream
 304  * @buf_num: number of buffer allocated.
 305  * @buf_size: size of each buffer in buf_list.
 306  * @buf_list: array containing all allocate buffers for streaming.
 307  * @dma_addr: list of dma_addr_t for each buffer in buf_list.
 308  *
 309  * @urbs_initialized: number of URBs initialized.
 310  * @urbs_submitted: number of URBs submitted.
 311  */
 312 #define MAX_NO_URBS_FOR_DATA_STREAM 10
 313 struct usb_data_stream {
 314         struct usb_device                 *udev;
 315         struct usb_data_stream_properties  props;
 316
 317 #define USB_STATE_INIT    0x00
 318 #define USB_STATE_URB_BUF 0x01
 319         int state;
 320
 321         void (*complete) (struct usb_data_stream *, u8 *, size_t);
 322
 323         struct urb    *urb_list[MAX_NO_URBS_FOR_DATA_STREAM];
 324         int            buf_num;
 325         unsigned long  buf_size;
 326         u8            *buf_list[MAX_NO_URBS_FOR_DATA_STREAM];
 327         dma_addr_t     dma_addr[MAX_NO_URBS_FOR_DATA_STREAM];
 328
 329         int urbs_initialized;
 330         int urbs_submitted;
 331
 332         void *user_priv;
 333 };
 334
 335 /**
 336  * struct dvb_usb_adapter - a DVB adapter on a USB device
 337  * @id: index of this adapter (starting with 0).
 338  *
 339  * @feedcount: number of reqested feeds (used for streaming-activation)
 340  * @pid_filtering: is hardware pid_filtering used or not.
 341  *
 342  * @pll_addr: I2C address of the tuner for programming
 343  * @pll_init: array containing the initialization buffer
 344  * @pll_desc: pointer to the appropriate struct dvb_pll_desc
 345  * @tuner_pass_ctrl: called to (de)activate tuner passthru of the demod or the board
 346  *
 347  * @dvb_adap: device's dvb_adapter.
 348  * @dmxdev: device's dmxdev.
 349  * @demux: device's software demuxer.
 350  * @dvb_net: device's dvb_net interfaces.
 351  * @dvb_frontend: device's frontend.
 352  * @max_feed_count: how many feeds can be handled simultaneously by this
 353  *  device
 354  *
 355  * @fe_init:  rerouted frontend-init (wakeup) function.
 356  * @fe_sleep: rerouted frontend-sleep function.
 357  *
 358  * @stream: the usb data stream.
 359  */
 360 struct dvb_usb_fe_adapter {
 361         struct dvb_frontend *fe;
 362
 363         int (*fe_init)  (struct dvb_frontend *);
 364         int (*fe_sleep) (struct dvb_frontend *);
 365
 366         struct usb_data_stream stream;
 367
 368         int pid_filtering;
 369         int max_feed_count;
 370
 371         void *priv;
 372 };
 373
 374 struct dvb_usb_adapter {
 375         struct dvb_usb_device *dev;
 376         struct dvb_usb_adapter_properties props;
 377
 378 #define DVB_USB_ADAP_STATE_INIT 0x000
 379 #define DVB_USB_ADAP_STATE_DVB  0x001
 380         int state;
 381
 382         u8  id;
 383
 384         int feedcount;
 385
 386         /* dvb */
 387         struct dvb_adapter   dvb_adap;
 388         struct dmxdev        dmxdev;
 389         struct dvb_demux     demux;
 390         struct dvb_net       dvb_net;
 391
 392         struct dvb_usb_fe_adapter fe_adap[MAX_NO_OF_FE_PER_ADAP];
 393         int active_fe;
 394         int num_frontends_initialized;
 395
 396         void *priv;
 397 };
 398
 399 /**
 400  * struct dvb_usb_device - object of a DVB USB device
 401  * @props: copy of the struct dvb_usb_properties this device belongs to.
 402  * @desc: pointer to the device's struct dvb_usb_device_description.
 403  * @state: initialization and runtime state of the device.
 404  *
 405  * @powered: indicated whether the device is power or not.
 406  *  Powered is in/decremented for each call to modify the state.
 407  * @udev: pointer to the device's struct usb_device.
 408  *
 409  * @data_mutex: mutex to protect the data structure used to store URB data
 410  * @usb_mutex: mutex of USB control messages (reading needs two messages).
 411  *      Please notice that this mutex is used internally at the generic
 412  *      URB control functions. So, drivers using dvb_usb_generic_rw() and
 413  *      derivated functions should not lock it internally.
 414  * @i2c_mutex: mutex for i2c-transfers
 415  *
 416  * @i2c_adap: device's i2c_adapter if it uses I2CoverUSB
 417  *
 418  * @rc_dev: rc device for the remote control (rc-core mode)
 419  * @input_dev: input device for the remote control (legacy mode)
 420  * @rc_query_work: struct work_struct frequent rc queries
 421  * @last_event: last triggered event
 422  * @last_state: last state (no, pressed, repeat)
 423  * @owner: owner of the dvb_adapter
 424  * @priv: private data of the actual driver (allocate by dvb-usb, size defined
 425  *  in size_of_priv of dvb_usb_properties).
 426  */
 427 struct dvb_usb_device {
 428         struct dvb_usb_device_properties props;
 429         struct dvb_usb_device_description *desc;
 430
 431         struct usb_device *udev;
 432
 433 #define DVB_USB_STATE_INIT        0x000
 434 #define DVB_USB_STATE_I2C         0x001
 435 #define DVB_USB_STATE_DVB         0x002
 436 #define DVB_USB_STATE_REMOTE      0x004
 437         int state;
 438
 439         int powered;
 440
 441         /* locking */
 442         struct mutex data_mutex;
 443         struct mutex usb_mutex;
 444
 445         /* i2c */
 446         struct mutex i2c_mutex;
 447         struct i2c_adapter i2c_adap;
 448
 449         int                    num_adapters_initialized;
 450         struct dvb_usb_adapter adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
 451
 452         /* remote control */
 453         struct rc_dev *rc_dev;
 454         struct input_dev *input_dev;
 455         char rc_phys[64];
 456         struct delayed_work rc_query_work;
 457         u32 last_event;
 458         int last_state;
 459
 460         struct module *owner;
 461
 462         void *priv;
 463 };
 464
 465 extern int dvb_usb_device_init(struct usb_interface *,
 466                                struct dvb_usb_device_properties *,
 467                                struct module *, struct dvb_usb_device **,
 468                                short *adapter_nums);
 469 extern void dvb_usb_device_exit(struct usb_interface *);
 470
 471 /* the generic read/write method for device control */
 472 extern int __must_check
 473 dvb_usb_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16, int);
 474 extern int __must_check
 475 dvb_usb_generic_write(struct dvb_usb_device *, u8 *, u16);
 476
 477 /* commonly used remote control parsing */
 478 extern int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *, u8[], u32 *, int *);
 479
 480 /* commonly used firmware download types and function */
 481 struct hexline {
 482         u8 len;
 483         u32 addr;
 484         u8 type;
 485         u8 data[255];
 486         u8 chk;
 487 };
 488 extern int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type);
 489 extern int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, int *pos);
 490
 491
 492 #endif