drivers/media/dvb/dvb-core/dvb_frontend.h

   1 /*
   2  * dvb_frontend.h
   3  *
   4  * Copyright (C) 2001 convergence integrated media GmbH
   5  * Copyright (C) 2004 convergence GmbH
   6  *
   7  * Written by Ralph Metzler
   8  * Overhauled by Holger Waechtler
   9  * Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public License
  13  * as published by the Free Software Foundation; either version 2.1
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21
  22  * You should have received a copy of the GNU Lesser General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  25  *
  26  */
  27
  28 #ifndef _DVB_FRONTEND_H_
  29 #define _DVB_FRONTEND_H_
  30
  31 #include <linux/types.h>
  32 #include <linux/sched.h>
  33 #include <linux/ioctl.h>
  34 #include <linux/i2c.h>
  35 #include <linux/module.h>
  36 #include <linux/errno.h>
  37 #include <linux/delay.h>
  38 #include <linux/mutex.h>
  39 #include <linux/slab.h>
  40
  41 #include <linux/dvb/frontend.h>
  42
  43 #include "dvbdev.h"
  44
  45 /*
  46  * Maximum number of Delivery systems per frontend. It
  47  * should be smaller or equal to 32
  48  */
  49 #define MAX_DELSYS      8
  50
  51 struct dvb_frontend_tune_settings {
  52         int min_delay_ms;
  53         int step_size;
  54         int max_drift;
  55 };
  56
  57 struct dvb_frontend;
  58
  59 struct dvb_tuner_info {
  60         char name[128];
  61
  62         u32 frequency_min;
  63         u32 frequency_max;
  64         u32 frequency_step;
  65
  66         u32 bandwidth_min;
  67         u32 bandwidth_max;
  68         u32 bandwidth_step;
  69 };
  70
  71 struct analog_parameters {
  72         unsigned int frequency;
  73         unsigned int mode;
  74         unsigned int audmode;
  75         u64 std;
  76 };
  77
  78 enum dvbfe_modcod {
  79         DVBFE_MODCOD_DUMMY_PLFRAME      = 0,
  80         DVBFE_MODCOD_QPSK_1_4,
  81         DVBFE_MODCOD_QPSK_1_3,
  82         DVBFE_MODCOD_QPSK_2_5,
  83         DVBFE_MODCOD_QPSK_1_2,
  84         DVBFE_MODCOD_QPSK_3_5,
  85         DVBFE_MODCOD_QPSK_2_3,
  86         DVBFE_MODCOD_QPSK_3_4,
  87         DVBFE_MODCOD_QPSK_4_5,
  88         DVBFE_MODCOD_QPSK_5_6,
  89         DVBFE_MODCOD_QPSK_8_9,
  90         DVBFE_MODCOD_QPSK_9_10,
  91         DVBFE_MODCOD_8PSK_3_5,
  92         DVBFE_MODCOD_8PSK_2_3,
  93         DVBFE_MODCOD_8PSK_3_4,
  94         DVBFE_MODCOD_8PSK_5_6,
  95         DVBFE_MODCOD_8PSK_8_9,
  96         DVBFE_MODCOD_8PSK_9_10,
  97         DVBFE_MODCOD_16APSK_2_3,
  98         DVBFE_MODCOD_16APSK_3_4,
  99         DVBFE_MODCOD_16APSK_4_5,
 100         DVBFE_MODCOD_16APSK_5_6,
 101         DVBFE_MODCOD_16APSK_8_9,
 102         DVBFE_MODCOD_16APSK_9_10,
 103         DVBFE_MODCOD_32APSK_3_4,
 104         DVBFE_MODCOD_32APSK_4_5,
 105         DVBFE_MODCOD_32APSK_5_6,
 106         DVBFE_MODCOD_32APSK_8_9,
 107         DVBFE_MODCOD_32APSK_9_10,
 108         DVBFE_MODCOD_RESERVED_1,
 109         DVBFE_MODCOD_BPSK_1_3,
 110         DVBFE_MODCOD_BPSK_1_4,
 111         DVBFE_MODCOD_RESERVED_2
 112 };
 113
 114 enum tuner_param {
 115         DVBFE_TUNER_FREQUENCY           = (1 <<  0),
 116         DVBFE_TUNER_TUNERSTEP           = (1 <<  1),
 117         DVBFE_TUNER_IFFREQ              = (1 <<  2),
 118         DVBFE_TUNER_BANDWIDTH           = (1 <<  3),
 119         DVBFE_TUNER_REFCLOCK            = (1 <<  4),
 120         DVBFE_TUNER_IQSENSE             = (1 <<  5),
 121         DVBFE_TUNER_DUMMY               = (1 << 31)
 122 };
 123
 124 /*
 125  * ALGO_HW: (Hardware Algorithm)
 126  * ----------------------------------------------------------------
 127  * Devices that support this algorithm do everything in hardware
 128  * and no software support is needed to handle them.
 129  * Requesting these devices to LOCK is the only thing required,
 130  * device is supposed to do everything in the hardware.
 131  *
 132  * ALGO_SW: (Software Algorithm)
 133  * ----------------------------------------------------------------
 134  * These are dumb devices, that require software to do everything
 135  *
 136  * ALGO_CUSTOM: (Customizable Agorithm)
 137  * ----------------------------------------------------------------
 138  * Devices having this algorithm can be customized to have specific
 139  * algorithms in the frontend driver, rather than simply doing a
 140  * software zig-zag. In this case the zigzag maybe hardware assisted
 141  * or it maybe completely done in hardware. In all cases, usage of
 142  * this algorithm, in conjunction with the search and track
 143  * callbacks, utilizes the driver specific algorithm.
 144  *
 145  * ALGO_RECOVERY: (Recovery Algorithm)
 146  * ----------------------------------------------------------------
 147  * These devices have AUTO recovery capabilities from LOCK failure
 148  */
 149 enum dvbfe_algo {
 150         DVBFE_ALGO_HW                   = (1 <<  0),
 151         DVBFE_ALGO_SW                   = (1 <<  1),
 152         DVBFE_ALGO_CUSTOM               = (1 <<  2),
 153         DVBFE_ALGO_RECOVERY             = (1 << 31)
 154 };
 155
 156 struct tuner_state {
 157         u32 frequency;
 158         u32 tunerstep;
 159         u32 ifreq;
 160         u32 bandwidth;
 161         u32 iqsense;
 162         u32 refclock;
 163 };
 164
 165 /*
 166  * search callback possible return status
 167  *
 168  * DVBFE_ALGO_SEARCH_SUCCESS
 169  * The frontend search algorithm completed and returned successfully
 170  *
 171  * DVBFE_ALGO_SEARCH_ASLEEP
 172  * The frontend search algorithm is sleeping
 173  *
 174  * DVBFE_ALGO_SEARCH_FAILED
 175  * The frontend search for a signal failed
 176  *
 177  * DVBFE_ALGO_SEARCH_INVALID
 178  * The frontend search algorith was probably supplied with invalid
 179  * parameters and the search is an invalid one
 180  *
 181  * DVBFE_ALGO_SEARCH_ERROR
 182  * The frontend search algorithm failed due to some error
 183  *
 184  * DVBFE_ALGO_SEARCH_AGAIN
 185  * The frontend search algorithm was requested to search again
 186  */
 187 enum dvbfe_search {
 188         DVBFE_ALGO_SEARCH_SUCCESS       = (1 <<  0),
 189         DVBFE_ALGO_SEARCH_ASLEEP        = (1 <<  1),
 190         DVBFE_ALGO_SEARCH_FAILED        = (1 <<  2),
 191         DVBFE_ALGO_SEARCH_INVALID       = (1 <<  3),
 192         DVBFE_ALGO_SEARCH_AGAIN         = (1 <<  4),
 193         DVBFE_ALGO_SEARCH_ERROR         = (1 << 31),
 194 };
 195
 196
 197 struct dvb_tuner_ops {
 198
 199         struct dvb_tuner_info info;
 200
 201         int (*release)(struct dvb_frontend *fe);
 202         int (*init)(struct dvb_frontend *fe);
 203         int (*sleep)(struct dvb_frontend *fe);
 204
 205         /** This is for simple PLLs - set all parameters in one go. */
 206         int (*set_params)(struct dvb_frontend *fe);
 207         int (*set_analog_params)(struct dvb_frontend *fe, struct analog_parameters *p);
 208
 209         /** This is support for demods like the mt352 - fills out the supplied buffer with what to write. */
 210         int (*calc_regs)(struct dvb_frontend *fe, u8 *buf, int buf_len);
 211
 212         /** This is to allow setting tuner-specific configs */
 213         int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
 214
 215         int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
 216         int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
 217         int (*get_if_frequency)(struct dvb_frontend *fe, u32 *frequency);
 218
 219 #define TUNER_STATUS_LOCKED 1
 220 #define TUNER_STATUS_STEREO 2
 221         int (*get_status)(struct dvb_frontend *fe, u32 *status);
 222         int (*get_rf_strength)(struct dvb_frontend *fe, u16 *strength);
 223
 224         /** These are provided separately from set_params in order to facilitate silicon
 225          * tuners which require sophisticated tuning loops, controlling each parameter separately. */
 226         int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
 227         int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);
 228
 229         /*
 230          * These are provided separately from set_params in order to facilitate silicon
 231          * tuners which require sophisticated tuning loops, controlling each parameter separately.
 232          */
 233         int (*set_state)(struct dvb_frontend *fe, enum tuner_param param, struct tuner_state *state);
 234         int (*get_state)(struct dvb_frontend *fe, enum tuner_param param, struct tuner_state *state);
 235 };
 236
 237 struct analog_demod_info {
 238         char *name;
 239 };
 240
 241 struct analog_demod_ops {
 242
 243         struct analog_demod_info info;
 244
 245         void (*set_params)(struct dvb_frontend *fe,
 246                            struct analog_parameters *params);
 247         int  (*has_signal)(struct dvb_frontend *fe);
 248         int  (*get_afc)(struct dvb_frontend *fe);
 249         void (*tuner_status)(struct dvb_frontend *fe);
 250         void (*standby)(struct dvb_frontend *fe);
 251         void (*release)(struct dvb_frontend *fe);
 252         int  (*i2c_gate_ctrl)(struct dvb_frontend *fe, int enable);
 253
 254         /** This is to allow setting tuner-specific configuration */
 255         int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
 256 };
 257
 258 struct dtv_frontend_properties;
 259
 260 struct dvb_frontend_ops {
 261
 262         struct dvb_frontend_info info;
 263
 264         u8 delsys[MAX_DELSYS];
 265
 266         void (*release)(struct dvb_frontend* fe);
 267         void (*release_sec)(struct dvb_frontend* fe);
 268
 269         int (*init)(struct dvb_frontend* fe);
 270         int (*sleep)(struct dvb_frontend* fe);
 271
 272         int (*write)(struct dvb_frontend* fe, const u8 buf[], int len);
 273
 274         /* if this is set, it overrides the default swzigzag */
 275         int (*tune)(struct dvb_frontend* fe,
 276                     bool re_tune,
 277                     unsigned int mode_flags,
 278                     unsigned int *delay,
 279                     fe_status_t *status);
 280         /* get frontend tuning algorithm from the module */
 281         enum dvbfe_algo (*get_frontend_algo)(struct dvb_frontend *fe);
 282
 283         /* these two are only used for the swzigzag code */
 284         int (*set_frontend)(struct dvb_frontend *fe);
 285         int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
 286
 287         int (*get_frontend)(struct dvb_frontend *fe);
 288
 289         int (*read_status)(struct dvb_frontend* fe, fe_status_t* status);
 290         int (*read_ber)(struct dvb_frontend* fe, u32* ber);
 291         int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
 292         int (*read_snr)(struct dvb_frontend* fe, u16* snr);
 293         int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks);
 294
 295         int (*diseqc_reset_overload)(struct dvb_frontend* fe);
 296         int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
 297         int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply);
 298         int (*diseqc_send_burst)(struct dvb_frontend* fe, fe_sec_mini_cmd_t minicmd);
 299         int (*set_tone)(struct dvb_frontend* fe, fe_sec_tone_mode_t tone);
 300         int (*set_voltage)(struct dvb_frontend* fe, fe_sec_voltage_t voltage);
 301         int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg);
 302         int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
 303         int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
 304         int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire);
 305
 306         /* These callbacks are for devices that implement their own
 307          * tuning algorithms, rather than a simple swzigzag
 308          */
 309         enum dvbfe_search (*search)(struct dvb_frontend *fe);
 310
 311         struct dvb_tuner_ops tuner_ops;
 312         struct analog_demod_ops analog_ops;
 313
 314         int (*set_property)(struct dvb_frontend* fe, struct dtv_property* tvp);
 315         int (*get_property)(struct dvb_frontend* fe, struct dtv_property* tvp);
 316 };
 317
 318 #ifdef __DVB_CORE__
 319 #define MAX_EVENT 8
 320
 321 struct dvb_fe_events {
 322         struct dvb_frontend_event events[MAX_EVENT];
 323         int                       eventw;
 324         int                       eventr;
 325         int                       overflow;
 326         wait_queue_head_t         wait_queue;
 327         struct mutex              mtx;
 328 };
 329 #endif
 330
 331 struct dtv_frontend_properties {
 332
 333         /* Cache State */
 334         u32                     state;
 335
 336         u32                     frequency;
 337         fe_modulation_t         modulation;
 338
 339         fe_sec_voltage_t        voltage;
 340         fe_sec_tone_mode_t      sectone;
 341         fe_spectral_inversion_t inversion;
 342         fe_code_rate_t          fec_inner;
 343         fe_transmit_mode_t      transmission_mode;
 344         u32                     bandwidth_hz;   /* 0 = AUTO */
 345         fe_guard_interval_t     guard_interval;
 346         fe_hierarchy_t          hierarchy;
 347         u32                     symbol_rate;
 348         fe_code_rate_t          code_rate_HP;
 349         fe_code_rate_t          code_rate_LP;
 350
 351         fe_pilot_t              pilot;
 352         fe_rolloff_t            rolloff;
 353
 354         fe_delivery_system_t    delivery_system;
 355
 356         /* ISDB-T specifics */
 357         u8                      isdbt_partial_reception;
 358         u8                      isdbt_sb_mode;
 359         u8                      isdbt_sb_subchannel;
 360         u32                     isdbt_sb_segment_idx;
 361         u32                     isdbt_sb_segment_count;
 362         u8                      isdbt_layer_enabled;
 363         struct {
 364             u8                  segment_count;
 365             fe_code_rate_t      fec;
 366             fe_modulation_t     modulation;
 367             u8                  interleaving;
 368         } layer[3];
 369
 370         /* ISDB-T specifics */
 371         u32                     isdbs_ts_id;
 372
 373         /* DVB-T2 specifics */
 374         u32                     dvbt2_plp_id;
 375 };
 376
 377 struct dvb_frontend {
 378         struct dvb_frontend_ops ops;
 379         struct dvb_adapter *dvb;
 380         void *demodulator_priv;
 381         void *tuner_priv;
 382         void *frontend_priv;
 383         void *sec_priv;
 384         void *analog_demod_priv;
 385         struct dtv_frontend_properties dtv_property_cache;
 386 #define DVB_FRONTEND_COMPONENT_TUNER 0
 387 #define DVB_FRONTEND_COMPONENT_DEMOD 1
 388         int (*callback)(void *adapter_priv, int component, int cmd, int arg);
 389         int id;
 390 };
 391
 392 extern int dvb_register_frontend(struct dvb_adapter *dvb,
 393                                  struct dvb_frontend *fe);
 394
 395 extern int dvb_unregister_frontend(struct dvb_frontend *fe);
 396
 397 extern void dvb_frontend_detach(struct dvb_frontend *fe);
 398
 399 extern void dvb_frontend_reinitialise(struct dvb_frontend *fe);
 400
 401 extern void dvb_frontend_sleep_until(struct timeval *waketime, u32 add_usec);
 402 extern s32 timeval_usec_diff(struct timeval lasttime, struct timeval curtime);
 403
 404 #endif