LXR linux/drivers/media/dvb-frontends/tda10023.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3    TDA10023  - DVB-C decoder
   4    (as used in Philips CU1216-3 NIM and the Reelbox DVB-C tuner card)
   5
   6    Copyright (C) 2005 Georg Acher, BayCom GmbH (acher at baycom dot de)
   7    Copyright (c) 2006 Hartmut Birr (e9hack at gmail dot com)
   8
   9    Remotely based on tda10021.c
  10    Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
  11    Copyright (C) 2004 Markus Schulz <msc@antzsystem.de>
  12                   Support for TDA10021
  13
  14*/
  15
  16#include <linux/delay.h>
  17#include <linux/errno.h>
  18#include <linux/init.h>
  19#include <linux/kernel.h>
  20#include <linux/module.h>
  21#include <linux/string.h>
  22#include <linux/slab.h>
  23
  24#include <asm/div64.h>
  25
  26#include <media/dvb_frontend.h>
  27#include "tda1002x.h"
  28
  29#define REG0_INIT_VAL 0x23
  30
  31struct tda10023_state {
  32        struct i2c_adapter* i2c;
  33        /* configuration settings */
  34        const struct tda10023_config *config;
  35        struct dvb_frontend frontend;
  36
  37        u8 pwm;
  38        u8 reg0;
  39
  40        /* clock settings */
  41        u32 xtal;
  42        u8 pll_m;
  43        u8 pll_p;
  44        u8 pll_n;
  45        u32 sysclk;
  46};
  47
  48#define dprintk(x...)
  49
  50static int verbose;
  51
  52static u8 tda10023_readreg (struct tda10023_state* state, u8 reg)
  53{
  54        u8 b0 [] = { reg };
  55        u8 b1 [] = { 0 };
  56        struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 1 },
  57                                  { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
  58        int ret;
  59
  60        ret = i2c_transfer (state->i2c, msg, 2);
  61        if (ret != 2) {
  62                int num = state->frontend.dvb ? state->frontend.dvb->num : -1;
  63                printk(KERN_ERR "DVB: TDA10023(%d): %s: readreg error (reg == 0x%02x, ret == %i)\n",
  64                        num, __func__, reg, ret);
  65        }
  66        return b1[0];
  67}
  68
  69static int tda10023_writereg (struct tda10023_state* state, u8 reg, u8 data)
  70{
  71        u8 buf[] = { reg, data };
  72        struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 };
  73        int ret;
  74
  75        ret = i2c_transfer (state->i2c, &msg, 1);
  76        if (ret != 1) {
  77                int num = state->frontend.dvb ? state->frontend.dvb->num : -1;
  78                printk(KERN_ERR "DVB: TDA10023(%d): %s, writereg error (reg == 0x%02x, val == 0x%02x, ret == %i)\n",
  79                        num, __func__, reg, data, ret);
  80        }
  81        return (ret != 1) ? -EREMOTEIO : 0;
  82}
  83
  84
  85static int tda10023_writebit (struct tda10023_state* state, u8 reg, u8 mask,u8 data)
  86{
  87        if (mask==0xff)
  88                return tda10023_writereg(state, reg, data);
  89        else {
  90                u8 val;
  91                val=tda10023_readreg(state,reg);
  92                val&=~mask;
  93                val|=(data&mask);
  94                return tda10023_writereg(state, reg, val);
  95        }
  96}
  97
  98static void tda10023_writetab(struct tda10023_state* state, u8* tab)
  99{
 100        u8 r,m,v;
 101        while (1) {
 102                r=*tab++;
 103                m=*tab++;
 104                v=*tab++;
 105                if (r==0xff) {
 106                        if (m==0xff)
 107                                break;
 108                        else
 109                                msleep(m);
 110                }
 111                else
 112                        tda10023_writebit(state,r,m,v);
 113        }
 114}
 115
 116//get access to tuner
 117static int lock_tuner(struct tda10023_state* state)
 118{
 119        u8 buf[2] = { 0x0f, 0xc0 };
 120        struct i2c_msg msg = {.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2};
 121
 122        if(i2c_transfer(state->i2c, &msg, 1) != 1)
 123        {
 124                printk("tda10023: lock tuner fails\n");
 125                return -EREMOTEIO;
 126        }
 127        return 0;
 128}
 129
 130//release access from tuner
 131static int unlock_tuner(struct tda10023_state* state)
 132{
 133        u8 buf[2] = { 0x0f, 0x40 };
 134        struct i2c_msg msg_post={.addr=state->config->demod_address, .flags=0, .buf=buf, .len=2};
 135
 136        if(i2c_transfer(state->i2c, &msg_post, 1) != 1)
 137        {
 138                printk("tda10023: unlock tuner fails\n");
 139                return -EREMOTEIO;
 140        }
 141        return 0;
 142}
 143
 144static int tda10023_setup_reg0 (struct tda10023_state* state, u8 reg0)
 145{
 146        reg0 |= state->reg0 & 0x63;
 147
 148        tda10023_writereg (state, 0x00, reg0 & 0xfe);
 149        tda10023_writereg (state, 0x00, reg0 | 0x01);
 150
 151        state->reg0 = reg0;
 152        return 0;
 153}
 154
 155static int tda10023_set_symbolrate (struct tda10023_state* state, u32 sr)
 156{
 157        s32 BDR;
 158        s32 BDRI;
 159        s16 SFIL=0;
 160        u16 NDEC = 0;
 161
 162        /* avoid floating point operations multiplying syscloc and divider
 163           by 10 */
 164        u32 sysclk_x_10 = state->sysclk * 10;
 165
 166        if (sr < (u32)(sysclk_x_10/984)) {
 167                NDEC=3;
 168                SFIL=1;
 169        } else if (sr < (u32)(sysclk_x_10/640)) {
 170                NDEC=3;
 171                SFIL=0;
 172        } else if (sr < (u32)(sysclk_x_10/492)) {
 173                NDEC=2;
 174                SFIL=1;
 175        } else if (sr < (u32)(sysclk_x_10/320)) {
 176                NDEC=2;
 177                SFIL=0;
 178        } else if (sr < (u32)(sysclk_x_10/246)) {
 179                NDEC=1;
 180                SFIL=1;
 181        } else if (sr < (u32)(sysclk_x_10/160)) {
 182                NDEC=1;
 183                SFIL=0;
 184        } else if (sr < (u32)(sysclk_x_10/123)) {
 185                NDEC=0;
 186                SFIL=1;
 187        }
 188
 189        BDRI = (state->sysclk)*16;
 190        BDRI>>=NDEC;
 191        BDRI +=sr/2;
 192        BDRI /=sr;
 193
 194        if (BDRI>255)
 195                BDRI=255;
 196
 197        {
 198                u64 BDRX;
 199
 200                BDRX=1<<(24+NDEC);
 201                BDRX*=sr;
 202                do_div(BDRX, state->sysclk);    /* BDRX/=SYSCLK; */
 203
 204                BDR=(s32)BDRX;
 205        }
 206        dprintk("Symbolrate %i, BDR %i BDRI %i, NDEC %i\n",
 207                sr, BDR, BDRI, NDEC);
 208        tda10023_writebit (state, 0x03, 0xc0, NDEC<<6);
 209        tda10023_writereg (state, 0x0a, BDR&255);
 210        tda10023_writereg (state, 0x0b, (BDR>>8)&255);
 211        tda10023_writereg (state, 0x0c, (BDR>>16)&31);
 212        tda10023_writereg (state, 0x0d, BDRI);
 213        tda10023_writereg (state, 0x3d, (SFIL<<7));
 214        return 0;
 215}
 216
 217static int tda10023_init (struct dvb_frontend *fe)
 218{
 219        struct tda10023_state* state = fe->demodulator_priv;
 220        u8 tda10023_inittab[] = {
 221/*        reg  mask val */
 222/* 000 */ 0x2a, 0xff, 0x02,  /* PLL3, Bypass, Power Down */
 223/* 003 */ 0xff, 0x64, 0x00,  /* Sleep 100ms */
 224/* 006 */ 0x2a, 0xff, 0x03,  /* PLL3, Bypass, Power Down */
 225/* 009 */ 0xff, 0x64, 0x00,  /* Sleep 100ms */
 226                           /* PLL1 */
 227/* 012 */ 0x28, 0xff, (state->pll_m-1),
 228                           /* PLL2 */
 229/* 015 */ 0x29, 0xff, ((state->pll_p-1)<<6)|(state->pll_n-1),
 230                           /* GPR FSAMPLING=1 */
 231/* 018 */ 0x00, 0xff, REG0_INIT_VAL,
 232/* 021 */ 0x2a, 0xff, 0x08,  /* PLL3 PSACLK=1 */
 233/* 024 */ 0xff, 0x64, 0x00,  /* Sleep 100ms */
 234/* 027 */ 0x1f, 0xff, 0x00,  /* RESET */
 235/* 030 */ 0xff, 0x64, 0x00,  /* Sleep 100ms */
 236/* 033 */ 0xe6, 0x0c, 0x04,  /* RSCFG_IND */
 237/* 036 */ 0x10, 0xc0, 0x80,  /* DECDVBCFG1 PBER=1 */
 238
 239/* 039 */ 0x0e, 0xff, 0x82,  /* GAIN1 */
 240/* 042 */ 0x03, 0x08, 0x08,  /* CLKCONF DYN=1 */
 241/* 045 */ 0x2e, 0xbf, 0x30,  /* AGCCONF2 TRIAGC=0,POSAGC=ENAGCIF=1
 242                                       PPWMTUN=0 PPWMIF=0 */
 243/* 048 */ 0x01, 0xff, 0x30,  /* AGCREF */
 244/* 051 */ 0x1e, 0x84, 0x84,  /* CONTROL SACLK_ON=1 */
 245/* 054 */ 0x1b, 0xff, 0xc8,  /* ADC TWOS=1 */
 246/* 057 */ 0x3b, 0xff, 0xff,  /* IFMAX */
 247/* 060 */ 0x3c, 0xff, 0x00,  /* IFMIN */
 248/* 063 */ 0x34, 0xff, 0x00,  /* PWMREF */
 249/* 066 */ 0x35, 0xff, 0xff,  /* TUNMAX */
 250/* 069 */ 0x36, 0xff, 0x00,  /* TUNMIN */
 251/* 072 */ 0x06, 0xff, 0x7f,  /* EQCONF1 POSI=7 ENADAPT=ENEQUAL=DFE=1 */
 252/* 075 */ 0x1c, 0x30, 0x30,  /* EQCONF2 STEPALGO=SGNALGO=1 */
 253/* 078 */ 0x37, 0xff, 0xf6,  /* DELTAF_LSB */
 254/* 081 */ 0x38, 0xff, 0xff,  /* DELTAF_MSB */
 255/* 084 */ 0x02, 0xff, 0x93,  /* AGCCONF1  IFS=1 KAGCIF=2 KAGCTUN=3 */
 256/* 087 */ 0x2d, 0xff, 0xf6,  /* SWEEP SWPOS=1 SWDYN=7 SWSTEP=1 SWLEN=2 */
 257/* 090 */ 0x04, 0x10, 0x00,  /* SWRAMP=1 */
 258/* 093 */ 0x12, 0xff, TDA10023_OUTPUT_MODE_PARALLEL_B, /*
 259                                INTP1 POCLKP=1 FEL=1 MFS=0 */
 260/* 096 */ 0x2b, 0x01, 0xa1,  /* INTS1 */
 261/* 099 */ 0x20, 0xff, 0x04,  /* INTP2 SWAPP=? MSBFIRSTP=? INTPSEL=? */
 262/* 102 */ 0x2c, 0xff, 0x0d,  /* INTP/S TRIP=0 TRIS=0 */
 263/* 105 */ 0xc4, 0xff, 0x00,
 264/* 108 */ 0xc3, 0x30, 0x00,
 265/* 111 */ 0xb5, 0xff, 0x19,  /* ERAGC_THD */
 266/* 114 */ 0x00, 0x03, 0x01,  /* GPR, CLBS soft reset */
 267/* 117 */ 0x00, 0x03, 0x03,  /* GPR, CLBS soft reset */
 268/* 120 */ 0xff, 0x64, 0x00,  /* Sleep 100ms */
 269/* 123 */ 0xff, 0xff, 0xff
 270};
 271        dprintk("DVB: TDA10023(%d): init chip\n", fe->dvb->num);
 272
 273        /* override default values if set in config */
 274        if (state->config->deltaf) {
 275                tda10023_inittab[80] = (state->config->deltaf & 0xff);
 276                tda10023_inittab[83] = (state->config->deltaf >> 8);
 277        }
 278
 279        if (state->config->output_mode)
 280                tda10023_inittab[95] = state->config->output_mode;
 281
 282        tda10023_writetab(state, tda10023_inittab);
 283
 284        return 0;
 285}
 286
 287struct qam_params {
 288        u8 qam, lockthr, mseth, aref, agcrefnyq, eragnyq_thd;
 289};
 290
 291static int tda10023_set_parameters(struct dvb_frontend *fe)
 292{
 293        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 294        u32 delsys  = c->delivery_system;
 295        unsigned qam = c->modulation;
 296        bool is_annex_c;
 297        struct tda10023_state* state = fe->demodulator_priv;
 298        static const struct qam_params qam_params[] = {
 299                /* Modulation  QAM    LOCKTHR   MSETH   AREF AGCREFNYQ ERAGCNYQ_THD */
 300                [QPSK]    = { (5<<2),  0x78,    0x8c,   0x96,   0x78,   0x4c  },
 301                [QAM_16]  = { (0<<2),  0x87,    0xa2,   0x91,   0x8c,   0x57  },
 302                [QAM_32]  = { (1<<2),  0x64,    0x74,   0x96,   0x8c,   0x57  },
 303                [QAM_64]  = { (2<<2),  0x46,    0x43,   0x6a,   0x6a,   0x44  },
 304                [QAM_128] = { (3<<2),  0x36,    0x34,   0x7e,   0x78,   0x4c  },
 305                [QAM_256] = { (4<<2),  0x26,    0x23,   0x6c,   0x5c,   0x3c  },
 306        };
 307
 308        switch (delsys) {
 309        case SYS_DVBC_ANNEX_A:
 310                is_annex_c = false;
 311                break;
 312        case SYS_DVBC_ANNEX_C:
 313                is_annex_c = true;
 314                break;
 315        default:
 316                return -EINVAL;
 317        }
 318
 319        /*
 320         * gcc optimizes the code below the same way as it would code:
 321         *               "if (qam > 5) return -EINVAL;"
 322         * Yet, the code is clearer, as it shows what QAM standards are
 323         * supported by the driver, and avoids the usage of magic numbers on
 324         * it.
 325         */
 326        switch (qam) {
 327        case QPSK:
 328        case QAM_16:
 329        case QAM_32:
 330        case QAM_64:
 331        case QAM_128:
 332        case QAM_256:
 333                break;
 334        default:
 335                return -EINVAL;
 336        }
 337
 338        if (fe->ops.tuner_ops.set_params) {
 339                fe->ops.tuner_ops.set_params(fe);
 340                if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
 341        }
 342
 343        tda10023_set_symbolrate(state, c->symbol_rate);
 344        tda10023_writereg(state, 0x05, qam_params[qam].lockthr);
 345        tda10023_writereg(state, 0x08, qam_params[qam].mseth);
 346        tda10023_writereg(state, 0x09, qam_params[qam].aref);
 347        tda10023_writereg(state, 0xb4, qam_params[qam].agcrefnyq);
 348        tda10023_writereg(state, 0xb6, qam_params[qam].eragnyq_thd);
 349#if 0
 350        tda10023_writereg(state, 0x04, (c->inversion ? 0x12 : 0x32));
 351        tda10023_writebit(state, 0x04, 0x60, (c->inversion ? 0 : 0x20));
 352#endif
 353        tda10023_writebit(state, 0x04, 0x40, 0x40);
 354
 355        if (is_annex_c)
 356                tda10023_writebit(state, 0x3d, 0xfc, 0x03);
 357        else
 358                tda10023_writebit(state, 0x3d, 0xfc, 0x02);
 359
 360        tda10023_setup_reg0(state, qam_params[qam].qam);
 361
 362        return 0;
 363}
 364
 365static int tda10023_read_status(struct dvb_frontend *fe,
 366                                enum fe_status *status)
 367{
 368        struct tda10023_state* state = fe->demodulator_priv;
 369        int sync;
 370
 371        *status = 0;
 372
 373        //0x11[1] == CARLOCK -> Carrier locked
 374        //0x11[2] == FSYNC -> Frame synchronisation
 375        //0x11[3] == FEL -> Front End locked
 376        //0x11[6] == NODVB -> DVB Mode Information
 377        sync = tda10023_readreg (state, 0x11);
 378
 379        if (sync & 2)
 380                *status |= FE_HAS_SIGNAL|FE_HAS_CARRIER;
 381
 382        if (sync & 4)
 383                *status |= FE_HAS_SYNC|FE_HAS_VITERBI;
 384
 385        if (sync & 8)
 386                *status |= FE_HAS_LOCK;
 387
 388        return 0;
 389}
 390
 391static int tda10023_read_ber(struct dvb_frontend* fe, u32* ber)
 392{
 393        struct tda10023_state* state = fe->demodulator_priv;
 394        u8 a,b,c;
 395        a=tda10023_readreg(state, 0x14);
 396        b=tda10023_readreg(state, 0x15);
 397        c=tda10023_readreg(state, 0x16)&0xf;
 398        tda10023_writebit (state, 0x10, 0xc0, 0x00);
 399
 400        *ber = a | (b<<8)| (c<<16);
 401        return 0;
 402}
 403
 404static int tda10023_read_signal_strength(struct dvb_frontend* fe, u16* strength)
 405{
 406        struct tda10023_state* state = fe->demodulator_priv;
 407        u8 ifgain=tda10023_readreg(state, 0x2f);
 408
 409        u16 gain = ((255-tda10023_readreg(state, 0x17))) + (255-ifgain)/16;
 410        // Max raw value is about 0xb0 -> Normalize to >0xf0 after 0x90
 411        if (gain>0x90)
 412                gain=gain+2*(gain-0x90);
 413        if (gain>255)
 414                gain=255;
 415
 416        *strength = (gain<<8)|gain;
 417        return 0;
 418}
 419
 420static int tda10023_read_snr(struct dvb_frontend* fe, u16* snr)
 421{
 422        struct tda10023_state* state = fe->demodulator_priv;
 423
 424        u8 quality = ~tda10023_readreg(state, 0x18);
 425        *snr = (quality << 8) | quality;
 426        return 0;
 427}
 428
 429static int tda10023_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
 430{
 431        struct tda10023_state* state = fe->demodulator_priv;
 432        u8 a,b,c,d;
 433        a= tda10023_readreg (state, 0x74);
 434        b= tda10023_readreg (state, 0x75);
 435        c= tda10023_readreg (state, 0x76);
 436        d= tda10023_readreg (state, 0x77);
 437        *ucblocks = a | (b<<8)|(c<<16)|(d<<24);
 438
 439        tda10023_writebit (state, 0x10, 0x20,0x00);
 440        tda10023_writebit (state, 0x10, 0x20,0x20);
 441        tda10023_writebit (state, 0x13, 0x01, 0x00);
 442
 443        return 0;
 444}
 445
 446static int tda10023_get_frontend(struct dvb_frontend *fe,
 447                                 struct dtv_frontend_properties *p)
 448{
 449        struct tda10023_state* state = fe->demodulator_priv;
 450        int sync,inv;
 451        s8 afc = 0;
 452
 453        sync = tda10023_readreg(state, 0x11);
 454        afc = tda10023_readreg(state, 0x19);
 455        inv = tda10023_readreg(state, 0x04);
 456
 457        if (verbose) {
 458                /* AFC only valid when carrier has been recovered */
 459                printk(sync & 2 ? "DVB: TDA10023(%d): AFC (%d) %dHz\n" :
 460                                  "DVB: TDA10023(%d): [AFC (%d) %dHz]\n",
 461                        state->frontend.dvb->num, afc,
 462                       -((s32)p->symbol_rate * afc) >> 10);
 463        }
 464
 465        p->inversion = (inv&0x20?0:1);
 466        p->modulation = ((state->reg0 >> 2) & 7) + QAM_16;
 467
 468        p->fec_inner = FEC_NONE;
 469        p->frequency = ((p->frequency + 31250) / 62500) * 62500;
 470
 471        if (sync & 2)
 472                p->frequency -= ((s32)p->symbol_rate * afc) >> 10;
 473
 474        return 0;
 475}
 476
 477static int tda10023_sleep(struct dvb_frontend* fe)
 478{
 479        struct tda10023_state* state = fe->demodulator_priv;
 480
 481        tda10023_writereg (state, 0x1b, 0x02);  /* pdown ADC */
 482        tda10023_writereg (state, 0x00, 0x80);  /* standby */
 483
 484        return 0;
 485}
 486
 487static int tda10023_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
 488{
 489        struct tda10023_state* state = fe->demodulator_priv;
 490
 491        if (enable) {
 492                lock_tuner(state);
 493        } else {
 494                unlock_tuner(state);
 495        }
 496        return 0;
 497}
 498
 499static void tda10023_release(struct dvb_frontend* fe)
 500{
 501        struct tda10023_state* state = fe->demodulator_priv;
 502        kfree(state);
 503}
 504
 505static const struct dvb_frontend_ops tda10023_ops;
 506
 507struct dvb_frontend *tda10023_attach(const struct tda10023_config *config,
 508                                     struct i2c_adapter *i2c,
 509                                     u8 pwm)
 510{
 511        struct tda10023_state* state = NULL;
 512
 513        /* allocate memory for the internal state */
 514        state = kzalloc(sizeof(struct tda10023_state), GFP_KERNEL);
 515        if (state == NULL) goto error;
 516
 517        /* setup the state */
 518        state->config = config;
 519        state->i2c = i2c;
 520
 521        /* wakeup if in standby */
 522        tda10023_writereg (state, 0x00, 0x33);
 523        /* check if the demod is there */
 524        if ((tda10023_readreg(state, 0x1a) & 0xf0) != 0x70) goto error;
 525
 526        /* create dvb_frontend */
 527        memcpy(&state->frontend.ops, &tda10023_ops, sizeof(struct dvb_frontend_ops));
 528        state->pwm = pwm;
 529        state->reg0 = REG0_INIT_VAL;
 530        if (state->config->xtal) {
 531                state->xtal  = state->config->xtal;
 532                state->pll_m = state->config->pll_m;
 533                state->pll_p = state->config->pll_p;
 534                state->pll_n = state->config->pll_n;
 535        } else {
 536                /* set default values if not defined in config */
 537                state->xtal  = 28920000;
 538                state->pll_m = 8;
 539                state->pll_p = 4;
 540                state->pll_n = 1;
 541        }
 542
 543        /* calc sysclk */
 544        state->sysclk = (state->xtal * state->pll_m / \
 545                        (state->pll_n * state->pll_p));
 546
 547        state->frontend.ops.info.symbol_rate_min = (state->sysclk/2)/64;
 548        state->frontend.ops.info.symbol_rate_max = (state->sysclk/2)/4;
 549
 550        dprintk("DVB: TDA10023 %s: xtal:%d pll_m:%d pll_p:%d pll_n:%d\n",
 551                __func__, state->xtal, state->pll_m, state->pll_p,
 552                state->pll_n);
 553
 554        state->frontend.demodulator_priv = state;
 555        return &state->frontend;
 556
 557error:
 558        kfree(state);
 559        return NULL;
 560}
 561
 562static const struct dvb_frontend_ops tda10023_ops = {
 563        .delsys = { SYS_DVBC_ANNEX_A, SYS_DVBC_ANNEX_C },
 564        .info = {
 565                .name = "Philips TDA10023 DVB-C",
 566                .frequency_min_hz =  47 * MHz,
 567                .frequency_max_hz = 862 * MHz,
 568                .frequency_stepsize_hz = 62500,
 569                .symbol_rate_min = 0,  /* set in tda10023_attach */
 570                .symbol_rate_max = 0,  /* set in tda10023_attach */
 571                .caps = 0x400 | //FE_CAN_QAM_4
 572                        FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
 573                        FE_CAN_QAM_128 | FE_CAN_QAM_256 |
 574                        FE_CAN_FEC_AUTO
 575        },
 576
 577        .release = tda10023_release,
 578
 579        .init = tda10023_init,
 580        .sleep = tda10023_sleep,
 581        .i2c_gate_ctrl = tda10023_i2c_gate_ctrl,
 582
 583        .set_frontend = tda10023_set_parameters,
 584        .get_frontend = tda10023_get_frontend,
 585        .read_status = tda10023_read_status,
 586        .read_ber = tda10023_read_ber,
 587        .read_signal_strength = tda10023_read_signal_strength,
 588        .read_snr = tda10023_read_snr,
 589        .read_ucblocks = tda10023_read_ucblocks,
 590};
 591
 592
 593MODULE_DESCRIPTION("Philips TDA10023 DVB-C demodulator driver");
 594MODULE_AUTHOR("Georg Acher, Hartmut Birr");
 595MODULE_LICENSE("GPL");
 596
 597EXPORT_SYMBOL(tda10023_attach);
 598