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

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