drivers/media/usb/dvb-usb-v2/dvb_usb.h

   1 /*
   2  * DVB USB framework
   3  *
   4  * Copyright (C) 2004-6 Patrick Boettcher <patrick.boettcher@posteo.de>
   5  * Copyright (C) 2012 Antti Palosaari <crope@iki.fi>
   6  *
   7  *    This program is free software; you can redistribute it and/or modify
   8  *    it under the terms of the GNU General Public License as published by
   9  *    the Free Software Foundation; either version 2 of the License, or
  10  *    (at your option) any later version.
  11  *
  12  *    This program is distributed in the hope that it will be useful,
  13  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *    GNU General Public License for more details.
  16  *
  17  *    You should have received a copy of the GNU General Public License along
  18  *    with this program; if not, write to the Free Software Foundation, Inc.,
  19  *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #ifndef DVB_USB_H
  23 #define DVB_USB_H
  24
  25 #include <linux/usb/input.h>
  26 #include <linux/firmware.h>
  27 #include <media/rc-core.h>
  28 #include <media/media-device.h>
  29
  30 #include <media/dvb_frontend.h>
  31 #include <media/dvb_demux.h>
  32 #include <media/dvb_net.h>
  33 #include <media/dmxdev.h>
  34 #include <media/dvb-usb-ids.h>
  35
  36 /*
  37  * device file: /dev/dvb/adapter[0-1]/frontend[0-2]
  38  *
  39  * |-- device
  40  * |   |-- adapter0
  41  * |   |   |-- frontend0
  42  * |   |   |-- frontend1
  43  * |   |   `-- frontend2
  44  * |   `-- adapter1
  45  * |       |-- frontend0
  46  * |       |-- frontend1
  47  * |       `-- frontend2
  48  *
  49  *
  50  * Commonly used variable names:
  51  * d = pointer to device (struct dvb_usb_device *)
  52  * adap = pointer to adapter (struct dvb_usb_adapter *)
  53  * fe = pointer to frontend (struct dvb_frontend *)
  54  *
  55  * Use macros defined in that file to resolve needed pointers.
  56  */
  57
  58 /* helper macros for every DVB USB driver use */
  59 #define adap_to_d(adap) (container_of(adap, struct dvb_usb_device, \
  60                 adapter[adap->id]))
  61 #define adap_to_priv(adap) (adap_to_d(adap)->priv)
  62 #define fe_to_adap(fe) ((struct dvb_usb_adapter *) ((fe)->dvb->priv))
  63 #define fe_to_d(fe) (adap_to_d(fe_to_adap(fe)))
  64 #define fe_to_priv(fe) (fe_to_d(fe)->priv)
  65 #define d_to_priv(d) (d->priv)
  66
  67 #define dvb_usb_dbg_usb_control_msg(udev, r, t, v, i, b, l) { \
  68         char *direction; \
  69         if (t == (USB_TYPE_VENDOR | USB_DIR_OUT)) \
  70                 direction = ">>>"; \
  71         else \
  72                 direction = "<<<"; \
  73         dev_dbg(&udev->dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x " \
  74                         "%s %*ph\n",  __func__, t, r, v & 0xff, v >> 8, \
  75                         i & 0xff, i >> 8, l & 0xff, l >> 8, direction, l, b); \
  76 }
  77
  78 #define DVB_USB_STREAM_BULK(endpoint_, count_, size_) { \
  79         .type = USB_BULK, \
  80         .count = count_, \
  81         .endpoint = endpoint_, \
  82         .u = { \
  83                 .bulk = { \
  84                         .buffersize = size_, \
  85                 } \
  86         } \
  87 }
  88
  89 #define DVB_USB_STREAM_ISOC(endpoint_, count_, frames_, size_, interval_) { \
  90         .type = USB_ISOC, \
  91         .count = count_, \
  92         .endpoint = endpoint_, \
  93         .u = { \
  94                 .isoc = { \
  95                         .framesperurb = frames_, \
  96                         .framesize = size_,\
  97                         .interval = interval_, \
  98                 } \
  99         } \
 100 }
 101
 102 #define DVB_USB_DEVICE(vend, prod, props_, name_, rc) \
 103         .match_flags = USB_DEVICE_ID_MATCH_DEVICE, \
 104         .idVendor = (vend), \
 105         .idProduct = (prod), \
 106         .driver_info = (kernel_ulong_t) &((const struct dvb_usb_driver_info) { \
 107                 .props = (props_), \
 108                 .name = (name_), \
 109                 .rc_map = (rc), \
 110         })
 111
 112 struct dvb_usb_device;
 113 struct dvb_usb_adapter;
 114
 115 /**
 116  * structure for carrying all needed data from the device driver to the general
 117  * dvb usb routines
 118  * @name: device name
 119  * @rc_map: name of rc codes table
 120  * @props: structure containing all device properties
 121  */
 122 struct dvb_usb_driver_info {
 123         const char *name;
 124         const char *rc_map;
 125         const struct dvb_usb_device_properties *props;
 126 };
 127
 128 /**
 129  * structure for remote controller configuration
 130  * @map_name: name of rc codes table
 131  * @allowed_protos: protocol(s) supported by the driver
 132  * @change_protocol: callback to change protocol
 133  * @query: called to query an event from the device
 134  * @interval: time in ms between two queries
 135  * @driver_type: used to point if a device supports raw mode
 136  * @bulk_mode: device supports bulk mode for rc (disable polling mode)
 137  */
 138 struct dvb_usb_rc {
 139         const char *map_name;
 140         u64 allowed_protos;
 141         int (*change_protocol)(struct rc_dev *dev, u64 *rc_proto);
 142         int (*query) (struct dvb_usb_device *d);
 143         unsigned int interval;
 144         enum rc_driver_type driver_type;
 145         bool bulk_mode;
 146 };
 147
 148 /**
 149  * usb streaming configration for adapter
 150  * @type: urb type
 151  * @count: count of used urbs
 152  * @endpoint: stream usb endpoint number
 153  */
 154 struct usb_data_stream_properties {
 155 #define USB_BULK  1
 156 #define USB_ISOC  2
 157         u8 type;
 158         u8 count;
 159         u8 endpoint;
 160
 161         union {
 162                 struct {
 163                         unsigned int buffersize; /* per URB */
 164                 } bulk;
 165                 struct {
 166                         int framesperurb;
 167                         int framesize;
 168                         int interval;
 169                 } isoc;
 170         } u;
 171 };
 172
 173 /**
 174  * properties of dvb usb device adapter
 175  * @caps: adapter capabilities
 176  * @pid_filter_count: pid count of adapter pid-filter
 177  * @pid_filter_ctrl: called to enable/disable pid-filter
 178  * @pid_filter: called to set/unset pid for filtering
 179  * @stream: adapter usb stream configuration
 180  */
 181 #define MAX_NO_OF_FE_PER_ADAP 3
 182 struct dvb_usb_adapter_properties {
 183 #define DVB_USB_ADAP_HAS_PID_FILTER               0x01
 184 #define DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF 0x02
 185 #define DVB_USB_ADAP_NEED_PID_FILTERING           0x04
 186         u8 caps;
 187
 188         u8 pid_filter_count;
 189         int (*pid_filter_ctrl) (struct dvb_usb_adapter *, int);
 190         int (*pid_filter) (struct dvb_usb_adapter *, int, u16, int);
 191
 192         struct usb_data_stream_properties stream;
 193 };
 194
 195 /**
 196  * struct dvb_usb_device_properties - properties of a dvb-usb-device
 197  * @driver_name: name of the owning driver module
 198  * @owner: owner of the dvb_adapter
 199  * @adapter_nr: values from the DVB_DEFINE_MOD_OPT_ADAPTER_NR() macro
 200  * @bInterfaceNumber: usb interface number driver binds
 201  * @size_of_priv: bytes allocated for the driver private data
 202  * @generic_bulk_ctrl_endpoint: bulk control endpoint number for sent
 203  * @generic_bulk_ctrl_endpoint_response: bulk control endpoint number for
 204  *  receive
 205  * @generic_bulk_ctrl_delay: delay between bulk control sent and receive message
 206  * @identify_state: called to determine the firmware state (cold or warm) and
 207  *  return possible firmware file name to be loaded
 208  * @firmware: name of the firmware file to be loaded
 209  * @download_firmware: called to download the firmware
 210  * @i2c_algo: i2c_algorithm if the device has i2c-adapter
 211  * @num_adapters: dvb usb device adapter count
 212  * @get_adapter_count: called to resolve adapter count
 213  * @adapter: array of all adapter properties of device
 214  * @power_ctrl: called to enable/disable power of the device
 215  * @read_config: called to resolve device configuration
 216  * @read_mac_address: called to resolve adapter mac-address
 217  * @frontend_attach: called to attach the possible frontends
 218  * @frontend_detach: called to detach the possible frontends
 219  * @tuner_attach: called to attach the possible tuners
 220  * @frontend_ctrl: called to power on/off active frontend
 221  * @streaming_ctrl: called to start/stop the usb streaming of adapter
 222  * @init: called after adapters are created in order to finalize device
 223  *  configuration
 224  * @exit: called when driver is unloaded
 225  * @get_rc_config: called to resolve used remote controller configuration
 226  * @get_stream_config: called to resolve input and output stream configuration
 227  *  of the adapter just before streaming is started. input stream is transport
 228  *  stream from the demodulator and output stream is usb stream to host.
 229  */
 230 #define MAX_NO_OF_ADAPTER_PER_DEVICE 2
 231 struct dvb_usb_device_properties {
 232         const char *driver_name;
 233         struct module *owner;
 234         short *adapter_nr;
 235
 236         u8 bInterfaceNumber;
 237         unsigned int size_of_priv;
 238         u8 generic_bulk_ctrl_endpoint;
 239         u8 generic_bulk_ctrl_endpoint_response;
 240         unsigned int generic_bulk_ctrl_delay;
 241
 242 #define WARM                  0
 243 #define COLD                  1
 244         int (*identify_state) (struct dvb_usb_device *, const char **);
 245         const char *firmware;
 246 #define RECONNECTS_USB        1
 247         int (*download_firmware) (struct dvb_usb_device *,
 248                         const struct firmware *);
 249
 250         struct i2c_algorithm *i2c_algo;
 251
 252         unsigned int num_adapters;
 253         int (*get_adapter_count) (struct dvb_usb_device *);
 254         struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
 255         int (*power_ctrl) (struct dvb_usb_device *, int);
 256         int (*read_config) (struct dvb_usb_device *d);
 257         int (*read_mac_address) (struct dvb_usb_adapter *, u8 []);
 258         int (*frontend_attach) (struct dvb_usb_adapter *);
 259         int (*frontend_detach)(struct dvb_usb_adapter *);
 260         int (*tuner_attach) (struct dvb_usb_adapter *);
 261         int (*tuner_detach)(struct dvb_usb_adapter *);
 262         int (*frontend_ctrl) (struct dvb_frontend *, int);
 263         int (*streaming_ctrl) (struct dvb_frontend *, int);
 264         int (*init) (struct dvb_usb_device *);
 265         void (*exit) (struct dvb_usb_device *);
 266         int (*get_rc_config) (struct dvb_usb_device *, struct dvb_usb_rc *);
 267 #define DVB_USB_FE_TS_TYPE_188        0
 268 #define DVB_USB_FE_TS_TYPE_204        1
 269 #define DVB_USB_FE_TS_TYPE_RAW        2
 270         int (*get_stream_config) (struct dvb_frontend *,  u8 *,
 271                         struct usb_data_stream_properties *);
 272 };
 273
 274 /**
 275  * generic object of an usb stream
 276  * @buf_num: number of buffer allocated
 277  * @buf_size: size of each buffer in buf_list
 278  * @buf_list: array containing all allocate buffers for streaming
 279  * @dma_addr: list of dma_addr_t for each buffer in buf_list
 280  *
 281  * @urbs_initialized: number of URBs initialized
 282  * @urbs_submitted: number of URBs submitted
 283  */
 284 #define MAX_NO_URBS_FOR_DATA_STREAM 10
 285 struct usb_data_stream {
 286         struct usb_device *udev;
 287         struct usb_data_stream_properties props;
 288
 289 #define USB_STATE_INIT    0x00
 290 #define USB_STATE_URB_BUF 0x01
 291         u8 state;
 292
 293         void (*complete) (struct usb_data_stream *, u8 *, size_t);
 294
 295         struct urb    *urb_list[MAX_NO_URBS_FOR_DATA_STREAM];
 296         int            buf_num;
 297         unsigned long  buf_size;
 298         u8            *buf_list[MAX_NO_URBS_FOR_DATA_STREAM];
 299         dma_addr_t     dma_addr[MAX_NO_URBS_FOR_DATA_STREAM];
 300
 301         int urbs_initialized;
 302         int urbs_submitted;
 303
 304         void *user_priv;
 305 };
 306
 307 /**
 308  * dvb adapter object on dvb usb device
 309  * @props: pointer to adapter properties
 310  * @stream: adapter the usb data stream
 311  * @id: index of this adapter (starting with 0)
 312  * @ts_type: transport stream, input stream, type
 313  * @suspend_resume_active: set when there is ongoing suspend / resume
 314  * @pid_filtering: is hardware pid_filtering used or not
 315  * @feed_count: current feed count
 316  * @max_feed_count: maimum feed count device can handle
 317  * @dvb_adap: adapter dvb_adapter
 318  * @dmxdev: adapter dmxdev
 319  * @demux: adapter software demuxer
 320  * @dvb_net: adapter dvb_net interfaces
 321  * @sync_mutex: mutex used to sync control and streaming of the adapter
 322  * @fe: adapter frontends
 323  * @fe_init: rerouted frontend-init function
 324  * @fe_sleep: rerouted frontend-sleep function
 325  */
 326 struct dvb_usb_adapter {
 327         const struct dvb_usb_adapter_properties *props;
 328         struct usb_data_stream stream;
 329         u8 id;
 330         u8 ts_type;
 331         bool suspend_resume_active;
 332         bool pid_filtering;
 333         u8 feed_count;
 334         u8 max_feed_count;
 335         s8 active_fe;
 336 #define ADAP_INIT                0
 337 #define ADAP_SLEEP               1
 338 #define ADAP_STREAMING           2
 339         unsigned long state_bits;
 340
 341         /* dvb */
 342         struct dvb_adapter   dvb_adap;
 343         struct dmxdev        dmxdev;
 344         struct dvb_demux     demux;
 345         struct dvb_net       dvb_net;
 346
 347         struct dvb_frontend *fe[MAX_NO_OF_FE_PER_ADAP];
 348         int (*fe_init[MAX_NO_OF_FE_PER_ADAP]) (struct dvb_frontend *);
 349         int (*fe_sleep[MAX_NO_OF_FE_PER_ADAP]) (struct dvb_frontend *);
 350 };
 351
 352 /**
 353  * dvb usb device object
 354  * @props: device properties
 355  * @name: device name
 356  * @rc_map: name of rc codes table
 357  * @rc_polling_active: set when RC polling is active
 358  * @intf: pointer to the device's struct usb_interface
 359  * @udev: pointer to the device's struct usb_device
 360  * @rc: remote controller configuration
 361  * @powered: indicated whether the device is power or not
 362  * @usb_mutex: mutex for usb control messages
 363  * @i2c_mutex: mutex for i2c-transfers
 364  * @i2c_adap: device's i2c-adapter
 365  * @rc_dev: rc device for the remote control
 366  * @rc_query_work: work for polling remote
 367  * @priv: private data of the actual driver (allocate by dvb usb, size defined
 368  *  in size_of_priv of dvb_usb_properties).
 369  */
 370 struct dvb_usb_device {
 371         const struct dvb_usb_device_properties *props;
 372         const char *name;
 373         const char *rc_map;
 374         bool rc_polling_active;
 375         struct usb_interface *intf;
 376         struct usb_device *udev;
 377         struct dvb_usb_rc rc;
 378         int powered;
 379
 380         /* locking */
 381         struct mutex usb_mutex;
 382
 383         /* i2c */
 384         struct mutex i2c_mutex;
 385         struct i2c_adapter i2c_adap;
 386
 387         struct dvb_usb_adapter adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];
 388
 389         /* remote control */
 390         struct rc_dev *rc_dev;
 391         char rc_phys[64];
 392         struct delayed_work rc_query_work;
 393
 394         void *priv;
 395 };
 396
 397 extern int dvb_usbv2_probe(struct usb_interface *,
 398                 const struct usb_device_id *);
 399 extern void dvb_usbv2_disconnect(struct usb_interface *);
 400 extern int dvb_usbv2_suspend(struct usb_interface *, pm_message_t);
 401 extern int dvb_usbv2_resume(struct usb_interface *);
 402 extern int dvb_usbv2_reset_resume(struct usb_interface *);
 403
 404 /* the generic read/write method for device control */
 405 extern int dvb_usbv2_generic_rw(struct dvb_usb_device *, u8 *, u16, u8 *, u16);
 406 extern int dvb_usbv2_generic_write(struct dvb_usb_device *, u8 *, u16);
 407 /* caller must hold lock when locked versions are called */
 408 extern int dvb_usbv2_generic_rw_locked(struct dvb_usb_device *,
 409                 u8 *, u16, u8 *, u16);
 410 extern int dvb_usbv2_generic_write_locked(struct dvb_usb_device *, u8 *, u16);
 411
 412 #endif