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