drivers/media/dvb-frontends/ascot2e.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * ascot2e.c
   4  *
   5  * Sony Ascot3E DVB-T/T2/C/C2 tuner driver
   6  *
   7  * Copyright 2012 Sony Corporation
   8  * Copyright (C) 2014 NetUP Inc.
   9  * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
  10  * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
  11   */
  12
  13 #include <linux/slab.h>
  14 #include <linux/module.h>
  15 #include <linux/dvb/frontend.h>
  16 #include <linux/types.h>
  17 #include "ascot2e.h"
  18 #include <media/dvb_frontend.h>
  19
  20 #define MAX_WRITE_REGSIZE 10
  21
  22 enum ascot2e_state {
  23         STATE_UNKNOWN,
  24         STATE_SLEEP,
  25         STATE_ACTIVE
  26 };
  27
  28 struct ascot2e_priv {
  29         u32                     frequency;
  30         u8                      i2c_address;
  31         struct i2c_adapter      *i2c;
  32         enum ascot2e_state      state;
  33         void                    *set_tuner_data;
  34         int                     (*set_tuner)(void *, int);
  35 };
  36
  37 enum ascot2e_tv_system_t {
  38         ASCOT2E_DTV_DVBT_5,
  39         ASCOT2E_DTV_DVBT_6,
  40         ASCOT2E_DTV_DVBT_7,
  41         ASCOT2E_DTV_DVBT_8,
  42         ASCOT2E_DTV_DVBT2_1_7,
  43         ASCOT2E_DTV_DVBT2_5,
  44         ASCOT2E_DTV_DVBT2_6,
  45         ASCOT2E_DTV_DVBT2_7,
  46         ASCOT2E_DTV_DVBT2_8,
  47         ASCOT2E_DTV_DVBC_6,
  48         ASCOT2E_DTV_DVBC_8,
  49         ASCOT2E_DTV_DVBC2_6,
  50         ASCOT2E_DTV_DVBC2_8,
  51         ASCOT2E_DTV_UNKNOWN
  52 };
  53
  54 struct ascot2e_band_sett {
  55         u8      if_out_sel;
  56         u8      agc_sel;
  57         u8      mix_oll;
  58         u8      rf_gain;
  59         u8      if_bpf_gc;
  60         u8      fif_offset;
  61         u8      bw_offset;
  62         u8      bw;
  63         u8      rf_oldet;
  64         u8      if_bpf_f0;
  65 };
  66
  67 #define ASCOT2E_AUTO            0xff
  68 #define ASCOT2E_OFFSET(ofs)     ((u8)(ofs) & 0x1F)
  69 #define ASCOT2E_BW_6            0x00
  70 #define ASCOT2E_BW_7            0x01
  71 #define ASCOT2E_BW_8            0x02
  72 #define ASCOT2E_BW_1_7          0x03
  73
  74 static struct ascot2e_band_sett ascot2e_sett[] = {
  75         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  76           ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6,  0x0B, 0x00 },
  77         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  78           ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6,  0x0B, 0x00 },
  79         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  80           ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_7,  0x0B, 0x00 },
  81         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  82           ASCOT2E_OFFSET(-4), ASCOT2E_OFFSET(-2), ASCOT2E_BW_8,  0x0B, 0x00 },
  83         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  84         ASCOT2E_OFFSET(-10), ASCOT2E_OFFSET(-16), ASCOT2E_BW_1_7, 0x0B, 0x00 },
  85         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  86           ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6,  0x0B, 0x00 },
  87         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  88           ASCOT2E_OFFSET(-8), ASCOT2E_OFFSET(-6), ASCOT2E_BW_6,  0x0B, 0x00 },
  89         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  90           ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_7,  0x0B, 0x00 },
  91         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x06,
  92           ASCOT2E_OFFSET(-4), ASCOT2E_OFFSET(-2), ASCOT2E_BW_8,  0x0B, 0x00 },
  93         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x02, ASCOT2E_AUTO, 0x03,
  94           ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-8), ASCOT2E_BW_6,  0x09, 0x00 },
  95         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x02, ASCOT2E_AUTO, 0x03,
  96           ASCOT2E_OFFSET(-2), ASCOT2E_OFFSET(-1), ASCOT2E_BW_8,  0x09, 0x00 },
  97         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x01,
  98           ASCOT2E_OFFSET(-6), ASCOT2E_OFFSET(-4), ASCOT2E_BW_6,  0x09, 0x00 },
  99         { ASCOT2E_AUTO, ASCOT2E_AUTO, 0x03, ASCOT2E_AUTO, 0x01,
 100           ASCOT2E_OFFSET(-2), ASCOT2E_OFFSET(2),  ASCOT2E_BW_8,  0x09, 0x00 }
 101 };
 102
 103 static void ascot2e_i2c_debug(struct ascot2e_priv *priv,
 104                               u8 reg, u8 write, const u8 *data, u32 len)
 105 {
 106         dev_dbg(&priv->i2c->dev, "ascot2e: I2C %s reg 0x%02x size %d\n",
 107                 (write == 0 ? "read" : "write"), reg, len);
 108         print_hex_dump_bytes("ascot2e: I2C data: ",
 109                 DUMP_PREFIX_OFFSET, data, len);
 110 }
 111
 112 static int ascot2e_write_regs(struct ascot2e_priv *priv,
 113                               u8 reg, const u8 *data, u32 len)
 114 {
 115         int ret;
 116         u8 buf[MAX_WRITE_REGSIZE + 1];
 117         struct i2c_msg msg[1] = {
 118                 {
 119                         .addr = priv->i2c_address,
 120                         .flags = 0,
 121                         .len = len + 1,
 122                         .buf = buf,
 123                 }
 124         };
 125
 126         if (len + 1 > sizeof(buf)) {
 127                 dev_warn(&priv->i2c->dev,"wr reg=%04x: len=%d is too big!\n",
 128                          reg, len + 1);
 129                 return -E2BIG;
 130         }
 131
 132         ascot2e_i2c_debug(priv, reg, 1, data, len);
 133         buf[0] = reg;
 134         memcpy(&buf[1], data, len);
 135         ret = i2c_transfer(priv->i2c, msg, 1);
 136         if (ret >= 0 && ret != 1)
 137                 ret = -EREMOTEIO;
 138         if (ret < 0) {
 139                 dev_warn(&priv->i2c->dev,
 140                         "%s: i2c wr failed=%d reg=%02x len=%d\n",
 141                         KBUILD_MODNAME, ret, reg, len);
 142                 return ret;
 143         }
 144         return 0;
 145 }
 146
 147 static int ascot2e_write_reg(struct ascot2e_priv *priv, u8 reg, u8 val)
 148 {
 149         u8 tmp = val; /* see gcc.gnu.org/bugzilla/show_bug.cgi?id=81715 */
 150
 151         return ascot2e_write_regs(priv, reg, &tmp, 1);
 152 }
 153
 154 static int ascot2e_read_regs(struct ascot2e_priv *priv,
 155                              u8 reg, u8 *val, u32 len)
 156 {
 157         int ret;
 158         struct i2c_msg msg[2] = {
 159                 {
 160                         .addr = priv->i2c_address,
 161                         .flags = 0,
 162                         .len = 1,
 163                         .buf = &reg,
 164                 }, {
 165                         .addr = priv->i2c_address,
 166                         .flags = I2C_M_RD,
 167                         .len = len,
 168                         .buf = val,
 169                 }
 170         };
 171
 172         ret = i2c_transfer(priv->i2c, &msg[0], 1);
 173         if (ret >= 0 && ret != 1)
 174                 ret = -EREMOTEIO;
 175         if (ret < 0) {
 176                 dev_warn(&priv->i2c->dev,
 177                         "%s: I2C rw failed=%d addr=%02x reg=%02x\n",
 178                         KBUILD_MODNAME, ret, priv->i2c_address, reg);
 179                 return ret;
 180         }
 181         ret = i2c_transfer(priv->i2c, &msg[1], 1);
 182         if (ret >= 0 && ret != 1)
 183                 ret = -EREMOTEIO;
 184         if (ret < 0) {
 185                 dev_warn(&priv->i2c->dev,
 186                         "%s: i2c rd failed=%d addr=%02x reg=%02x\n",
 187                         KBUILD_MODNAME, ret, priv->i2c_address, reg);
 188                 return ret;
 189         }
 190         ascot2e_i2c_debug(priv, reg, 0, val, len);
 191         return 0;
 192 }
 193
 194 static int ascot2e_read_reg(struct ascot2e_priv *priv, u8 reg, u8 *val)
 195 {
 196         return ascot2e_read_regs(priv, reg, val, 1);
 197 }
 198
 199 static int ascot2e_set_reg_bits(struct ascot2e_priv *priv,
 200                                 u8 reg, u8 data, u8 mask)
 201 {
 202         int res;
 203         u8 rdata;
 204
 205         if (mask != 0xff) {
 206                 res = ascot2e_read_reg(priv, reg, &rdata);
 207                 if (res != 0)
 208                         return res;
 209                 data = ((data & mask) | (rdata & (mask ^ 0xFF)));
 210         }
 211         return ascot2e_write_reg(priv, reg, data);
 212 }
 213
 214 static int ascot2e_enter_power_save(struct ascot2e_priv *priv)
 215 {
 216         u8 data[2];
 217
 218         dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 219         if (priv->state == STATE_SLEEP)
 220                 return 0;
 221         data[0] = 0x00;
 222         data[1] = 0x04;
 223         ascot2e_write_regs(priv, 0x14, data, 2);
 224         ascot2e_write_reg(priv, 0x50, 0x01);
 225         priv->state = STATE_SLEEP;
 226         return 0;
 227 }
 228
 229 static int ascot2e_leave_power_save(struct ascot2e_priv *priv)
 230 {
 231         u8 data[2] = { 0xFB, 0x0F };
 232
 233         dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 234         if (priv->state == STATE_ACTIVE)
 235                 return 0;
 236         ascot2e_write_regs(priv, 0x14, data, 2);
 237         ascot2e_write_reg(priv, 0x50, 0x00);
 238         priv->state = STATE_ACTIVE;
 239         return 0;
 240 }
 241
 242 static int ascot2e_init(struct dvb_frontend *fe)
 243 {
 244         struct ascot2e_priv *priv = fe->tuner_priv;
 245
 246         dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 247         return ascot2e_leave_power_save(priv);
 248 }
 249
 250 static void ascot2e_release(struct dvb_frontend *fe)
 251 {
 252         struct ascot2e_priv *priv = fe->tuner_priv;
 253
 254         dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 255         kfree(fe->tuner_priv);
 256         fe->tuner_priv = NULL;
 257 }
 258
 259 static int ascot2e_sleep(struct dvb_frontend *fe)
 260 {
 261         struct ascot2e_priv *priv = fe->tuner_priv;
 262
 263         dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
 264         ascot2e_enter_power_save(priv);
 265         return 0;
 266 }
 267
 268 static enum ascot2e_tv_system_t ascot2e_get_tv_system(struct dvb_frontend *fe)
 269 {
 270         enum ascot2e_tv_system_t system = ASCOT2E_DTV_UNKNOWN;
 271         struct dtv_frontend_properties *p = &fe->dtv_property_cache;
 272         struct ascot2e_priv *priv = fe->tuner_priv;
 273
 274         if (p->delivery_system == SYS_DVBT) {
 275                 if (p->bandwidth_hz <= 5000000)
 276                         system = ASCOT2E_DTV_DVBT_5;
 277                 else if (p->bandwidth_hz <= 6000000)
 278                         system = ASCOT2E_DTV_DVBT_6;
 279                 else if (p->bandwidth_hz <= 7000000)
 280                         system = ASCOT2E_DTV_DVBT_7;
 281                 else if (p->bandwidth_hz <= 8000000)
 282                         system = ASCOT2E_DTV_DVBT_8;
 283                 else {
 284                         system = ASCOT2E_DTV_DVBT_8;
 285                         p->bandwidth_hz = 8000000;
 286                 }
 287         } else if (p->delivery_system == SYS_DVBT2) {
 288                 if (p->bandwidth_hz <= 5000000)
 289                         system = ASCOT2E_DTV_DVBT2_5;
 290                 else if (p->bandwidth_hz <= 6000000)
 291                         system = ASCOT2E_DTV_DVBT2_6;
 292                 else if (p->bandwidth_hz <= 7000000)
 293                         system = ASCOT2E_DTV_DVBT2_7;
 294                 else if (p->bandwidth_hz <= 8000000)
 295                         system = ASCOT2E_DTV_DVBT2_8;
 296                 else {
 297                         system = ASCOT2E_DTV_DVBT2_8;
 298                         p->bandwidth_hz = 8000000;
 299                 }
 300         } else if (p->delivery_system == SYS_DVBC_ANNEX_A) {
 301                 if (p->bandwidth_hz <= 6000000)
 302                         system = ASCOT2E_DTV_DVBC_6;
 303                 else if (p->bandwidth_hz <= 8000000)
 304                         system = ASCOT2E_DTV_DVBC_8;
 305         }
 306         dev_dbg(&priv->i2c->dev,
 307                 "%s(): ASCOT2E DTV system %d (delsys %d, bandwidth %d)\n",
 308                 __func__, (int)system, p->delivery_system, p->bandwidth_hz);
 309         return system;
 310 }
 311
 312 static int ascot2e_set_params(struct dvb_frontend *fe)
 313 {
 314         u8 data[10];
 315         u32 frequency;
 316         enum ascot2e_tv_system_t tv_system;
 317         struct dtv_frontend_properties *p = &fe->dtv_property_cache;
 318         struct ascot2e_priv *priv = fe->tuner_priv;
 319
 320         dev_dbg(&priv->i2c->dev, "%s(): tune frequency %dkHz\n",
 321                 __func__, p->frequency / 1000);
 322         tv_system = ascot2e_get_tv_system(fe);
 323
 324         if (tv_system == ASCOT2E_DTV_UNKNOWN) {
 325                 dev_dbg(&priv->i2c->dev, "%s(): unknown DTV system\n",
 326                         __func__);
 327                 return -EINVAL;
 328         }
 329         if (priv->set_tuner)
 330                 priv->set_tuner(priv->set_tuner_data, 1);
 331         frequency = roundup(p->frequency / 1000, 25);
 332         if (priv->state == STATE_SLEEP)
 333                 ascot2e_leave_power_save(priv);
 334
 335         /* IF_OUT_SEL / AGC_SEL setting */
 336         data[0] = 0x00;
 337         if (ascot2e_sett[tv_system].agc_sel != ASCOT2E_AUTO) {
 338                 /* AGC pin setting from parameter table */
 339                 data[0] |= (u8)(
 340                         (ascot2e_sett[tv_system].agc_sel & 0x03) << 3);
 341         }
 342         if (ascot2e_sett[tv_system].if_out_sel != ASCOT2E_AUTO) {
 343                 /* IFOUT pin setting from parameter table */
 344                 data[0] |= (u8)(
 345                         (ascot2e_sett[tv_system].if_out_sel & 0x01) << 2);
 346         }
 347         /* Set bit[4:2] only */
 348         ascot2e_set_reg_bits(priv, 0x05, data[0], 0x1c);
 349         /* 0x06 - 0x0F */
 350         /* REF_R setting (0x06) */
 351         if (tv_system == ASCOT2E_DTV_DVBC_6 ||
 352                         tv_system == ASCOT2E_DTV_DVBC_8) {
 353                 /* xtal, xtal*2 */
 354                 data[0] = (frequency > 500000) ? 16 : 32;
 355         } else {
 356                 /* xtal/8, xtal/4 */
 357                 data[0] = (frequency > 500000) ? 2 : 4;
 358         }
 359         /* XOSC_SEL=100uA */
 360         data[1] = 0x04;
 361         /* KBW setting (0x08), KC0 setting (0x09), KC1 setting (0x0A) */
 362         if (tv_system == ASCOT2E_DTV_DVBC_6 ||
 363                         tv_system == ASCOT2E_DTV_DVBC_8) {
 364                 data[2] = 18;
 365                 data[3] = 120;
 366                 data[4] = 20;
 367         } else {
 368                 data[2] = 48;
 369                 data[3] = 10;
 370                 data[4] = 30;
 371         }
 372         /* ORDER/R2_RANGE/R2_BANK/C2_BANK setting (0x0B) */
 373         if (tv_system == ASCOT2E_DTV_DVBC_6 ||
 374                         tv_system == ASCOT2E_DTV_DVBC_8)
 375                 data[5] = (frequency > 500000) ? 0x08 : 0x0c;
 376         else
 377                 data[5] = (frequency > 500000) ? 0x30 : 0x38;
 378         /* Set MIX_OLL (0x0C) value from parameter table */
 379         data[6] = ascot2e_sett[tv_system].mix_oll;
 380         /* Set RF_GAIN (0x0D) setting from parameter table */
 381         if (ascot2e_sett[tv_system].rf_gain == ASCOT2E_AUTO) {
 382                 /* RF_GAIN auto control enable */
 383                 ascot2e_write_reg(priv, 0x4E, 0x01);
 384                 /* RF_GAIN Default value */
 385                 data[7] = 0x00;
 386         } else {
 387                 /* RF_GAIN auto control disable */
 388                 ascot2e_write_reg(priv, 0x4E, 0x00);
 389                 data[7] = ascot2e_sett[tv_system].rf_gain;
 390         }
 391         /* Set IF_BPF_GC/FIF_OFFSET (0x0E) value from parameter table */
 392         data[8] = (u8)((ascot2e_sett[tv_system].fif_offset << 3) |
 393                 (ascot2e_sett[tv_system].if_bpf_gc & 0x07));
 394         /* Set BW_OFFSET (0x0F) value from parameter table */
 395         data[9] = ascot2e_sett[tv_system].bw_offset;
 396         ascot2e_write_regs(priv, 0x06, data, 10);
 397         /*
 398          * 0x45 - 0x47
 399          * LNA optimization setting
 400          * RF_LNA_DIST1-5, RF_LNA_CM
 401          */
 402         if (tv_system == ASCOT2E_DTV_DVBC_6 ||
 403                         tv_system == ASCOT2E_DTV_DVBC_8) {
 404                 data[0] = 0x0F;
 405                 data[1] = 0x00;
 406                 data[2] = 0x01;
 407         } else {
 408                 data[0] = 0x0F;
 409                 data[1] = 0x00;
 410                 data[2] = 0x03;
 411         }
 412         ascot2e_write_regs(priv, 0x45, data, 3);
 413         /* 0x49 - 0x4A
 414          Set RF_OLDET_ENX/RF_OLDET_OLL value from parameter table */
 415         data[0] = ascot2e_sett[tv_system].rf_oldet;
 416         /* Set IF_BPF_F0 value from parameter table */
 417         data[1] = ascot2e_sett[tv_system].if_bpf_f0;
 418         ascot2e_write_regs(priv, 0x49, data, 2);
 419         /*
 420          * Tune now
 421          * RFAGC fast mode / RFAGC auto control enable
 422          * (set bit[7], bit[5:4] only)
 423          * vco_cal = 1, set MIX_OL_CPU_EN
 424          */
 425         ascot2e_set_reg_bits(priv, 0x0c, 0x90, 0xb0);
 426         /* Logic wake up, CPU wake up */
 427         data[0] = 0xc4;
 428         data[1] = 0x40;
 429         ascot2e_write_regs(priv, 0x03, data, 2);
 430         /* 0x10 - 0x14 */
 431         data[0] = (u8)(frequency & 0xFF);         /* 0x10: FRF_L */
 432         data[1] = (u8)((frequency >> 8) & 0xFF);  /* 0x11: FRF_M */
 433         data[2] = (u8)((frequency >> 16) & 0x0F); /* 0x12: FRF_H (bit[3:0]) */
 434         /* 0x12: BW (bit[5:4]) */
 435         data[2] |= (u8)(ascot2e_sett[tv_system].bw << 4);
 436         data[3] = 0xFF; /* 0x13: VCO calibration enable */
 437         data[4] = 0xFF; /* 0x14: Analog block enable */
 438         /* Tune (Burst write) */
 439         ascot2e_write_regs(priv, 0x10, data, 5);
 440         msleep(50);
 441         /* CPU deep sleep */
 442         ascot2e_write_reg(priv, 0x04, 0x00);
 443         /* Logic sleep */
 444         ascot2e_write_reg(priv, 0x03, 0xC0);
 445         /* RFAGC normal mode (set bit[5:4] only) */
 446         ascot2e_set_reg_bits(priv, 0x0C, 0x00, 0x30);
 447         priv->frequency = frequency;
 448         return 0;
 449 }
 450
 451 static int ascot2e_get_frequency(struct dvb_frontend *fe, u32 *frequency)
 452 {
 453         struct ascot2e_priv *priv = fe->tuner_priv;
 454
 455         *frequency = priv->frequency * 1000;
 456         return 0;
 457 }
 458
 459 static const struct dvb_tuner_ops ascot2e_tuner_ops = {
 460         .info = {
 461                 .name = "Sony ASCOT2E",
 462                 .frequency_min_hz  =    1 * MHz,
 463                 .frequency_max_hz  = 1200 * MHz,
 464                 .frequency_step_hz =   25 * kHz,
 465         },
 466         .init = ascot2e_init,
 467         .release = ascot2e_release,
 468         .sleep = ascot2e_sleep,
 469         .set_params = ascot2e_set_params,
 470         .get_frequency = ascot2e_get_frequency,
 471 };
 472
 473 struct dvb_frontend *ascot2e_attach(struct dvb_frontend *fe,
 474                                     const struct ascot2e_config *config,
 475                                     struct i2c_adapter *i2c)
 476 {
 477         u8 data[4];
 478         struct ascot2e_priv *priv = NULL;
 479
 480         priv = kzalloc(sizeof(struct ascot2e_priv), GFP_KERNEL);
 481         if (priv == NULL)
 482                 return NULL;
 483         priv->i2c_address = (config->i2c_address >> 1);
 484         priv->i2c = i2c;
 485         priv->set_tuner_data = config->set_tuner_priv;
 486         priv->set_tuner = config->set_tuner_callback;
 487
 488         if (fe->ops.i2c_gate_ctrl)
 489                 fe->ops.i2c_gate_ctrl(fe, 1);
 490
 491         /* 16 MHz xTal frequency */
 492         data[0] = 16;
 493         /* VCO current setting */
 494         data[1] = 0x06;
 495         /* Logic wake up, CPU boot */
 496         data[2] = 0xC4;
 497         data[3] = 0x40;
 498         ascot2e_write_regs(priv, 0x01, data, 4);
 499         /* RFVGA optimization setting (RF_DIST0 - RF_DIST2) */
 500         data[0] = 0x10;
 501         data[1] = 0x3F;
 502         data[2] = 0x25;
 503         ascot2e_write_regs(priv, 0x22, data, 3);
 504         /* PLL mode setting */
 505         ascot2e_write_reg(priv, 0x28, 0x1e);
 506         /* RSSI setting */
 507         ascot2e_write_reg(priv, 0x59, 0x04);
 508         /* TODO check CPU HW error state here */
 509         msleep(80);
 510         /* Xtal oscillator current control setting */
 511         ascot2e_write_reg(priv, 0x4c, 0x01);
 512         /* XOSC_SEL=100uA */
 513         ascot2e_write_reg(priv, 0x07, 0x04);
 514         /* CPU deep sleep */
 515         ascot2e_write_reg(priv, 0x04, 0x00);
 516         /* Logic sleep */
 517         ascot2e_write_reg(priv, 0x03, 0xc0);
 518         /* Power save setting */
 519         data[0] = 0x00;
 520         data[1] = 0x04;
 521         ascot2e_write_regs(priv, 0x14, data, 2);
 522         ascot2e_write_reg(priv, 0x50, 0x01);
 523         priv->state = STATE_SLEEP;
 524
 525         if (fe->ops.i2c_gate_ctrl)
 526                 fe->ops.i2c_gate_ctrl(fe, 0);
 527
 528         memcpy(&fe->ops.tuner_ops, &ascot2e_tuner_ops,
 529                                 sizeof(struct dvb_tuner_ops));
 530         fe->tuner_priv = priv;
 531         dev_info(&priv->i2c->dev,
 532                 "Sony ASCOT2E attached on addr=%x at I2C adapter %p\n",
 533                 priv->i2c_address, priv->i2c);
 534         return fe;
 535 }
 536 EXPORT_SYMBOL(ascot2e_attach);
 537
 538 MODULE_DESCRIPTION("Sony ASCOT2E terr/cab tuner driver");
 539 MODULE_AUTHOR("info@netup.ru");
 540 MODULE_LICENSE("GPL");