Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | NxtWave Communications - NXT6000 demodulator driver |
| 3 | |
| 4 | Copyright (C) 2002-2003 Florian Schirmer <jolt@tuxbox.org> |
| 5 | Copyright (C) 2003 Paul Andreassen <paul@andreassen.com.au> |
| 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 |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 20 | */ |
| 21 | |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/string.h> |
| 26 | #include <linux/slab.h> |
| 27 | |
| 28 | #include "dvb_frontend.h" |
| 29 | #include "nxt6000_priv.h" |
| 30 | #include "nxt6000.h" |
| 31 | |
| 32 | |
| 33 | |
| 34 | struct nxt6000_state { |
| 35 | struct i2c_adapter* i2c; |
| 36 | struct dvb_frontend_ops ops; |
| 37 | /* configuration settings */ |
| 38 | const struct nxt6000_config* config; |
| 39 | struct dvb_frontend frontend; |
| 40 | }; |
| 41 | |
| 42 | static int debug = 0; |
| 43 | #define dprintk if (debug) printk |
| 44 | |
| 45 | static int nxt6000_writereg(struct nxt6000_state* state, u8 reg, u8 data) |
| 46 | { |
| 47 | u8 buf[] = { reg, data }; |
| 48 | struct i2c_msg msg = {.addr = state->config->demod_address,.flags = 0,.buf = buf,.len = 2 }; |
| 49 | int ret; |
| 50 | |
| 51 | if ((ret = i2c_transfer(state->i2c, &msg, 1)) != 1) |
| 52 | dprintk("nxt6000: nxt6000_write error (reg: 0x%02X, data: 0x%02X, ret: %d)\n", reg, data, ret); |
| 53 | |
| 54 | return (ret != 1) ? -EFAULT : 0; |
| 55 | } |
| 56 | |
| 57 | static u8 nxt6000_readreg(struct nxt6000_state* state, u8 reg) |
| 58 | { |
| 59 | int ret; |
| 60 | u8 b0[] = { reg }; |
| 61 | u8 b1[] = { 0 }; |
| 62 | struct i2c_msg msgs[] = { |
| 63 | {.addr = state->config->demod_address,.flags = 0,.buf = b0,.len = 1}, |
| 64 | {.addr = state->config->demod_address,.flags = I2C_M_RD,.buf = b1,.len = 1} |
| 65 | }; |
| 66 | |
| 67 | ret = i2c_transfer(state->i2c, msgs, 2); |
| 68 | |
| 69 | if (ret != 2) |
| 70 | dprintk("nxt6000: nxt6000_read error (reg: 0x%02X, ret: %d)\n", reg, ret); |
| 71 | |
| 72 | return b1[0]; |
| 73 | } |
| 74 | |
| 75 | static void nxt6000_reset(struct nxt6000_state* state) |
| 76 | { |
| 77 | u8 val; |
| 78 | |
| 79 | val = nxt6000_readreg(state, OFDM_COR_CTL); |
| 80 | |
| 81 | nxt6000_writereg(state, OFDM_COR_CTL, val & ~COREACT); |
| 82 | nxt6000_writereg(state, OFDM_COR_CTL, val | COREACT); |
| 83 | } |
| 84 | |
| 85 | static int nxt6000_set_bandwidth(struct nxt6000_state* state, fe_bandwidth_t bandwidth) |
| 86 | { |
| 87 | u16 nominal_rate; |
| 88 | int result; |
| 89 | |
| 90 | switch (bandwidth) { |
| 91 | |
| 92 | case BANDWIDTH_6_MHZ: |
| 93 | nominal_rate = 0x55B7; |
| 94 | break; |
| 95 | |
| 96 | case BANDWIDTH_7_MHZ: |
| 97 | nominal_rate = 0x6400; |
| 98 | break; |
| 99 | |
| 100 | case BANDWIDTH_8_MHZ: |
| 101 | nominal_rate = 0x7249; |
| 102 | break; |
| 103 | |
| 104 | default: |
| 105 | return -EINVAL; |
| 106 | } |
| 107 | |
| 108 | if ((result = nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_1, nominal_rate & 0xFF)) < 0) |
| 109 | return result; |
| 110 | |
| 111 | return nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_2, (nominal_rate >> 8) & 0xFF); |
| 112 | } |
| 113 | |
| 114 | static int nxt6000_set_guard_interval(struct nxt6000_state* state, fe_guard_interval_t guard_interval) |
| 115 | { |
| 116 | switch (guard_interval) { |
| 117 | |
| 118 | case GUARD_INTERVAL_1_32: |
| 119 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x00 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); |
| 120 | |
| 121 | case GUARD_INTERVAL_1_16: |
| 122 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x01 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); |
| 123 | |
| 124 | case GUARD_INTERVAL_AUTO: |
| 125 | case GUARD_INTERVAL_1_8: |
| 126 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x02 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); |
| 127 | |
| 128 | case GUARD_INTERVAL_1_4: |
| 129 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, 0x03 | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x03)); |
| 130 | |
| 131 | default: |
| 132 | return -EINVAL; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | static int nxt6000_set_inversion(struct nxt6000_state* state, fe_spectral_inversion_t inversion) |
| 137 | { |
| 138 | switch (inversion) { |
| 139 | |
| 140 | case INVERSION_OFF: |
| 141 | return nxt6000_writereg(state, OFDM_ITB_CTL, 0x00); |
| 142 | |
| 143 | case INVERSION_ON: |
| 144 | return nxt6000_writereg(state, OFDM_ITB_CTL, ITBINV); |
| 145 | |
| 146 | default: |
| 147 | return -EINVAL; |
| 148 | |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | static int nxt6000_set_transmission_mode(struct nxt6000_state* state, fe_transmit_mode_t transmission_mode) |
| 153 | { |
| 154 | int result; |
| 155 | |
| 156 | switch (transmission_mode) { |
| 157 | |
| 158 | case TRANSMISSION_MODE_2K: |
| 159 | if ((result = nxt6000_writereg(state, EN_DMD_RACQ, 0x00 | (nxt6000_readreg(state, EN_DMD_RACQ) & ~0x03))) < 0) |
| 160 | return result; |
| 161 | |
| 162 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, (0x00 << 2) | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x04)); |
| 163 | |
| 164 | case TRANSMISSION_MODE_8K: |
| 165 | case TRANSMISSION_MODE_AUTO: |
| 166 | if ((result = nxt6000_writereg(state, EN_DMD_RACQ, 0x02 | (nxt6000_readreg(state, EN_DMD_RACQ) & ~0x03))) < 0) |
| 167 | return result; |
| 168 | |
| 169 | return nxt6000_writereg(state, OFDM_COR_MODEGUARD, (0x01 << 2) | (nxt6000_readreg(state, OFDM_COR_MODEGUARD) & ~0x04)); |
| 170 | |
| 171 | default: |
| 172 | return -EINVAL; |
| 173 | |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | static void nxt6000_setup(struct dvb_frontend* fe) |
| 178 | { |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 179 | struct nxt6000_state* state = fe->demodulator_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
| 181 | nxt6000_writereg(state, RS_COR_SYNC_PARAM, SYNC_PARAM); |
| 182 | nxt6000_writereg(state, BER_CTRL, /*(1 << 2) | */ (0x01 << 1) | 0x01); |
Johannes Stezenbach | 3a4a571 | 2005-05-16 21:54:29 -0700 | [diff] [blame] | 183 | nxt6000_writereg(state, VIT_BERTIME_2, 0x00); // BER Timer = 0x000200 * 256 = 131072 bits |
| 184 | nxt6000_writereg(state, VIT_BERTIME_1, 0x02); // |
| 185 | nxt6000_writereg(state, VIT_BERTIME_0, 0x00); // |
| 186 | nxt6000_writereg(state, VIT_COR_INTEN, 0x98); // Enable BER interrupts |
| 187 | nxt6000_writereg(state, VIT_COR_CTL, 0x82); // Enable BER measurement |
| 188 | nxt6000_writereg(state, VIT_COR_CTL, VIT_COR_RESYNC | 0x02 ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | nxt6000_writereg(state, OFDM_COR_CTL, (0x01 << 5) | (nxt6000_readreg(state, OFDM_COR_CTL) & 0x0F)); |
| 190 | nxt6000_writereg(state, OFDM_COR_MODEGUARD, FORCEMODE8K | 0x02); |
| 191 | nxt6000_writereg(state, OFDM_AGC_CTL, AGCLAST | INITIAL_AGC_BW); |
| 192 | nxt6000_writereg(state, OFDM_ITB_FREQ_1, 0x06); |
| 193 | nxt6000_writereg(state, OFDM_ITB_FREQ_2, 0x31); |
| 194 | nxt6000_writereg(state, OFDM_CAS_CTL, (0x01 << 7) | (0x02 << 3) | 0x04); |
| 195 | nxt6000_writereg(state, CAS_FREQ, 0xBB); /* CHECKME */ |
| 196 | nxt6000_writereg(state, OFDM_SYR_CTL, 1 << 2); |
| 197 | nxt6000_writereg(state, OFDM_PPM_CTL_1, PPM256); |
| 198 | nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_1, 0x49); |
| 199 | nxt6000_writereg(state, OFDM_TRL_NOMINALRATE_2, 0x72); |
| 200 | nxt6000_writereg(state, ANALOG_CONTROL_0, 1 << 5); |
| 201 | nxt6000_writereg(state, EN_DMD_RACQ, (1 << 7) | (3 << 4) | 2); |
| 202 | nxt6000_writereg(state, DIAG_CONFIG, TB_SET); |
| 203 | |
| 204 | if (state->config->clock_inversion) |
| 205 | nxt6000_writereg(state, SUB_DIAG_MODE_SEL, CLKINVERSION); |
| 206 | else |
| 207 | nxt6000_writereg(state, SUB_DIAG_MODE_SEL, 0); |
| 208 | |
| 209 | nxt6000_writereg(state, TS_FORMAT, 0); |
| 210 | |
| 211 | if (state->config->pll_init) { |
| 212 | nxt6000_writereg(state, ENABLE_TUNER_IIC, 0x01); /* open i2c bus switch */ |
| 213 | state->config->pll_init(fe); |
| 214 | nxt6000_writereg(state, ENABLE_TUNER_IIC, 0x00); /* close i2c bus switch */ |
| 215 | } |
| 216 | } |
| 217 | |
| 218 | static void nxt6000_dump_status(struct nxt6000_state *state) |
| 219 | { |
| 220 | u8 val; |
| 221 | |
| 222 | /* |
| 223 | printk("RS_COR_STAT: 0x%02X\n", nxt6000_readreg(fe, RS_COR_STAT)); |
| 224 | printk("VIT_SYNC_STATUS: 0x%02X\n", nxt6000_readreg(fe, VIT_SYNC_STATUS)); |
| 225 | printk("OFDM_COR_STAT: 0x%02X\n", nxt6000_readreg(fe, OFDM_COR_STAT)); |
| 226 | printk("OFDM_SYR_STAT: 0x%02X\n", nxt6000_readreg(fe, OFDM_SYR_STAT)); |
| 227 | printk("OFDM_TPS_RCVD_1: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_1)); |
| 228 | printk("OFDM_TPS_RCVD_2: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_2)); |
| 229 | printk("OFDM_TPS_RCVD_3: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_3)); |
| 230 | printk("OFDM_TPS_RCVD_4: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RCVD_4)); |
| 231 | printk("OFDM_TPS_RESERVED_1: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RESERVED_1)); |
| 232 | printk("OFDM_TPS_RESERVED_2: 0x%02X\n", nxt6000_readreg(fe, OFDM_TPS_RESERVED_2)); |
| 233 | */ |
| 234 | printk("NXT6000 status:"); |
| 235 | |
| 236 | val = nxt6000_readreg(state, RS_COR_STAT); |
| 237 | |
| 238 | printk(" DATA DESCR LOCK: %d,", val & 0x01); |
| 239 | printk(" DATA SYNC LOCK: %d,", (val >> 1) & 0x01); |
| 240 | |
| 241 | val = nxt6000_readreg(state, VIT_SYNC_STATUS); |
| 242 | |
| 243 | printk(" VITERBI LOCK: %d,", (val >> 7) & 0x01); |
| 244 | |
| 245 | switch ((val >> 4) & 0x07) { |
| 246 | |
| 247 | case 0x00: |
| 248 | printk(" VITERBI CODERATE: 1/2,"); |
| 249 | break; |
| 250 | |
| 251 | case 0x01: |
| 252 | printk(" VITERBI CODERATE: 2/3,"); |
| 253 | break; |
| 254 | |
| 255 | case 0x02: |
| 256 | printk(" VITERBI CODERATE: 3/4,"); |
| 257 | break; |
| 258 | |
| 259 | case 0x03: |
| 260 | printk(" VITERBI CODERATE: 5/6,"); |
| 261 | break; |
| 262 | |
| 263 | case 0x04: |
| 264 | printk(" VITERBI CODERATE: 7/8,"); |
| 265 | break; |
| 266 | |
| 267 | default: |
| 268 | printk(" VITERBI CODERATE: Reserved,"); |
| 269 | |
| 270 | } |
| 271 | |
| 272 | val = nxt6000_readreg(state, OFDM_COR_STAT); |
| 273 | |
| 274 | printk(" CHCTrack: %d,", (val >> 7) & 0x01); |
| 275 | printk(" TPSLock: %d,", (val >> 6) & 0x01); |
| 276 | printk(" SYRLock: %d,", (val >> 5) & 0x01); |
| 277 | printk(" AGCLock: %d,", (val >> 4) & 0x01); |
| 278 | |
| 279 | switch (val & 0x0F) { |
| 280 | |
| 281 | case 0x00: |
| 282 | printk(" CoreState: IDLE,"); |
| 283 | break; |
| 284 | |
| 285 | case 0x02: |
| 286 | printk(" CoreState: WAIT_AGC,"); |
| 287 | break; |
| 288 | |
| 289 | case 0x03: |
| 290 | printk(" CoreState: WAIT_SYR,"); |
| 291 | break; |
| 292 | |
| 293 | case 0x04: |
| 294 | printk(" CoreState: WAIT_PPM,"); |
| 295 | break; |
| 296 | |
| 297 | case 0x01: |
| 298 | printk(" CoreState: WAIT_TRL,"); |
| 299 | break; |
| 300 | |
| 301 | case 0x05: |
| 302 | printk(" CoreState: WAIT_TPS,"); |
| 303 | break; |
| 304 | |
| 305 | case 0x06: |
| 306 | printk(" CoreState: MONITOR_TPS,"); |
| 307 | break; |
| 308 | |
| 309 | default: |
| 310 | printk(" CoreState: Reserved,"); |
| 311 | |
| 312 | } |
| 313 | |
| 314 | val = nxt6000_readreg(state, OFDM_SYR_STAT); |
| 315 | |
| 316 | printk(" SYRLock: %d,", (val >> 4) & 0x01); |
| 317 | printk(" SYRMode: %s,", (val >> 2) & 0x01 ? "8K" : "2K"); |
| 318 | |
| 319 | switch ((val >> 4) & 0x03) { |
| 320 | |
| 321 | case 0x00: |
| 322 | printk(" SYRGuard: 1/32,"); |
| 323 | break; |
| 324 | |
| 325 | case 0x01: |
| 326 | printk(" SYRGuard: 1/16,"); |
| 327 | break; |
| 328 | |
| 329 | case 0x02: |
| 330 | printk(" SYRGuard: 1/8,"); |
| 331 | break; |
| 332 | |
| 333 | case 0x03: |
| 334 | printk(" SYRGuard: 1/4,"); |
| 335 | break; |
| 336 | } |
| 337 | |
| 338 | val = nxt6000_readreg(state, OFDM_TPS_RCVD_3); |
| 339 | |
| 340 | switch ((val >> 4) & 0x07) { |
| 341 | |
| 342 | case 0x00: |
| 343 | printk(" TPSLP: 1/2,"); |
| 344 | break; |
| 345 | |
| 346 | case 0x01: |
| 347 | printk(" TPSLP: 2/3,"); |
| 348 | break; |
| 349 | |
| 350 | case 0x02: |
| 351 | printk(" TPSLP: 3/4,"); |
| 352 | break; |
| 353 | |
| 354 | case 0x03: |
| 355 | printk(" TPSLP: 5/6,"); |
| 356 | break; |
| 357 | |
| 358 | case 0x04: |
| 359 | printk(" TPSLP: 7/8,"); |
| 360 | break; |
| 361 | |
| 362 | default: |
| 363 | printk(" TPSLP: Reserved,"); |
| 364 | |
| 365 | } |
| 366 | |
| 367 | switch (val & 0x07) { |
| 368 | |
| 369 | case 0x00: |
| 370 | printk(" TPSHP: 1/2,"); |
| 371 | break; |
| 372 | |
| 373 | case 0x01: |
| 374 | printk(" TPSHP: 2/3,"); |
| 375 | break; |
| 376 | |
| 377 | case 0x02: |
| 378 | printk(" TPSHP: 3/4,"); |
| 379 | break; |
| 380 | |
| 381 | case 0x03: |
| 382 | printk(" TPSHP: 5/6,"); |
| 383 | break; |
| 384 | |
| 385 | case 0x04: |
| 386 | printk(" TPSHP: 7/8,"); |
| 387 | break; |
| 388 | |
| 389 | default: |
| 390 | printk(" TPSHP: Reserved,"); |
| 391 | |
| 392 | } |
| 393 | |
| 394 | val = nxt6000_readreg(state, OFDM_TPS_RCVD_4); |
| 395 | |
| 396 | printk(" TPSMode: %s,", val & 0x01 ? "8K" : "2K"); |
| 397 | |
| 398 | switch ((val >> 4) & 0x03) { |
| 399 | |
| 400 | case 0x00: |
| 401 | printk(" TPSGuard: 1/32,"); |
| 402 | break; |
| 403 | |
| 404 | case 0x01: |
| 405 | printk(" TPSGuard: 1/16,"); |
| 406 | break; |
| 407 | |
| 408 | case 0x02: |
| 409 | printk(" TPSGuard: 1/8,"); |
| 410 | break; |
| 411 | |
| 412 | case 0x03: |
| 413 | printk(" TPSGuard: 1/4,"); |
| 414 | break; |
| 415 | |
| 416 | } |
| 417 | |
| 418 | /* Strange magic required to gain access to RF_AGC_STATUS */ |
| 419 | nxt6000_readreg(state, RF_AGC_VAL_1); |
| 420 | val = nxt6000_readreg(state, RF_AGC_STATUS); |
| 421 | val = nxt6000_readreg(state, RF_AGC_STATUS); |
| 422 | |
| 423 | printk(" RF AGC LOCK: %d,", (val >> 4) & 0x01); |
| 424 | printk("\n"); |
| 425 | } |
| 426 | |
| 427 | static int nxt6000_read_status(struct dvb_frontend* fe, fe_status_t* status) |
| 428 | { |
| 429 | u8 core_status; |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 430 | struct nxt6000_state* state = fe->demodulator_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | *status = 0; |
| 433 | |
| 434 | core_status = nxt6000_readreg(state, OFDM_COR_STAT); |
| 435 | |
| 436 | if (core_status & AGCLOCKED) |
| 437 | *status |= FE_HAS_SIGNAL; |
| 438 | |
| 439 | if (nxt6000_readreg(state, OFDM_SYR_STAT) & GI14_SYR_LOCK) |
| 440 | *status |= FE_HAS_CARRIER; |
| 441 | |
| 442 | if (nxt6000_readreg(state, VIT_SYNC_STATUS) & VITINSYNC) |
| 443 | *status |= FE_HAS_VITERBI; |
| 444 | |
| 445 | if (nxt6000_readreg(state, RS_COR_STAT) & RSCORESTATUS) |
| 446 | *status |= FE_HAS_SYNC; |
| 447 | |
| 448 | if ((core_status & TPSLOCKED) && (*status == (FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC))) |
| 449 | *status |= FE_HAS_LOCK; |
| 450 | |
| 451 | if (debug) |
| 452 | nxt6000_dump_status(state); |
| 453 | |
| 454 | return 0; |
| 455 | } |
| 456 | |
| 457 | static int nxt6000_init(struct dvb_frontend* fe) |
| 458 | { |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 459 | struct nxt6000_state* state = fe->demodulator_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
| 461 | nxt6000_reset(state); |
| 462 | nxt6000_setup(fe); |
| 463 | |
| 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | static int nxt6000_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *param) |
| 468 | { |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 469 | struct nxt6000_state* state = fe->demodulator_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | int result; |
| 471 | |
| 472 | nxt6000_writereg(state, ENABLE_TUNER_IIC, 0x01); /* open i2c bus switch */ |
| 473 | state->config->pll_set(fe, param); |
| 474 | nxt6000_writereg(state, ENABLE_TUNER_IIC, 0x00); /* close i2c bus switch */ |
| 475 | |
| 476 | if ((result = nxt6000_set_bandwidth(state, param->u.ofdm.bandwidth)) < 0) |
| 477 | return result; |
| 478 | if ((result = nxt6000_set_guard_interval(state, param->u.ofdm.guard_interval)) < 0) |
| 479 | return result; |
| 480 | if ((result = nxt6000_set_transmission_mode(state, param->u.ofdm.transmission_mode)) < 0) |
| 481 | return result; |
| 482 | if ((result = nxt6000_set_inversion(state, param->inversion)) < 0) |
| 483 | return result; |
| 484 | |
Svante Olofsson | 115eea4 | 2005-09-09 13:02:48 -0700 | [diff] [blame] | 485 | msleep(500); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | static void nxt6000_release(struct dvb_frontend* fe) |
| 490 | { |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 491 | struct nxt6000_state* state = fe->demodulator_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | kfree(state); |
| 493 | } |
| 494 | |
Johannes Stezenbach | 3a4a571 | 2005-05-16 21:54:29 -0700 | [diff] [blame] | 495 | static int nxt6000_read_snr(struct dvb_frontend* fe, u16* snr) |
| 496 | { |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 497 | struct nxt6000_state* state = fe->demodulator_priv; |
Johannes Stezenbach | 3a4a571 | 2005-05-16 21:54:29 -0700 | [diff] [blame] | 498 | |
| 499 | *snr = nxt6000_readreg( state, OFDM_CHC_SNR) / 8; |
| 500 | |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | static int nxt6000_read_ber(struct dvb_frontend* fe, u32* ber) |
| 505 | { |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 506 | struct nxt6000_state* state = fe->demodulator_priv; |
Johannes Stezenbach | 3a4a571 | 2005-05-16 21:54:29 -0700 | [diff] [blame] | 507 | |
| 508 | nxt6000_writereg( state, VIT_COR_INTSTAT, 0x18 ); |
| 509 | |
| 510 | *ber = (nxt6000_readreg( state, VIT_BER_1 ) << 8 ) | |
| 511 | nxt6000_readreg( state, VIT_BER_0 ); |
| 512 | |
| 513 | nxt6000_writereg( state, VIT_COR_INTSTAT, 0x18); // Clear BER Done interrupts |
| 514 | |
| 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | static int nxt6000_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength) |
| 519 | { |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 520 | struct nxt6000_state* state = fe->demodulator_priv; |
Johannes Stezenbach | 3a4a571 | 2005-05-16 21:54:29 -0700 | [diff] [blame] | 521 | |
| 522 | *signal_strength = (short) (511 - |
| 523 | (nxt6000_readreg(state, AGC_GAIN_1) + |
| 524 | ((nxt6000_readreg(state, AGC_GAIN_2) & 0x03) << 8))); |
| 525 | |
| 526 | return 0; |
| 527 | } |
| 528 | |
Svante Olofsson | 115eea4 | 2005-09-09 13:02:48 -0700 | [diff] [blame] | 529 | static int nxt6000_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) |
| 530 | { |
| 531 | tune->min_delay_ms = 500; |
| 532 | return 0; |
| 533 | } |
| 534 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | static struct dvb_frontend_ops nxt6000_ops; |
| 536 | |
| 537 | struct dvb_frontend* nxt6000_attach(const struct nxt6000_config* config, |
| 538 | struct i2c_adapter* i2c) |
| 539 | { |
| 540 | struct nxt6000_state* state = NULL; |
| 541 | |
| 542 | /* allocate memory for the internal state */ |
Johannes Stezenbach | b874270 | 2005-05-16 21:54:31 -0700 | [diff] [blame] | 543 | state = kmalloc(sizeof(struct nxt6000_state), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | if (state == NULL) goto error; |
| 545 | |
| 546 | /* setup the state */ |
| 547 | state->config = config; |
| 548 | state->i2c = i2c; |
| 549 | memcpy(&state->ops, &nxt6000_ops, sizeof(struct dvb_frontend_ops)); |
| 550 | |
| 551 | /* check if the demod is there */ |
| 552 | if (nxt6000_readreg(state, OFDM_MSC_REV) != NXT6000ASICDEVICE) goto error; |
| 553 | |
| 554 | /* create dvb_frontend */ |
| 555 | state->frontend.ops = &state->ops; |
| 556 | state->frontend.demodulator_priv = state; |
| 557 | return &state->frontend; |
| 558 | |
| 559 | error: |
| 560 | kfree(state); |
| 561 | return NULL; |
| 562 | } |
| 563 | |
| 564 | static struct dvb_frontend_ops nxt6000_ops = { |
| 565 | |
| 566 | .info = { |
| 567 | .name = "NxtWave NXT6000 DVB-T", |
| 568 | .type = FE_OFDM, |
| 569 | .frequency_min = 0, |
| 570 | .frequency_max = 863250000, |
| 571 | .frequency_stepsize = 62500, |
| 572 | /*.frequency_tolerance = *//* FIXME: 12% of SR */ |
| 573 | .symbol_rate_min = 0, /* FIXME */ |
| 574 | .symbol_rate_max = 9360000, /* FIXME */ |
| 575 | .symbol_rate_tolerance = 4000, |
| 576 | .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
Michael Krufky | 50c25ff | 2006-01-09 15:25:34 -0200 | [diff] [blame] | 577 | FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | |
| 578 | FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO | |
| 579 | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | |
| 580 | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | |
| 581 | FE_CAN_HIERARCHY_AUTO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | }, |
| 583 | |
| 584 | .release = nxt6000_release, |
| 585 | |
| 586 | .init = nxt6000_init, |
| 587 | |
Svante Olofsson | 115eea4 | 2005-09-09 13:02:48 -0700 | [diff] [blame] | 588 | .get_tune_settings = nxt6000_fe_get_tune_settings, |
| 589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | .set_frontend = nxt6000_set_frontend, |
| 591 | |
| 592 | .read_status = nxt6000_read_status, |
Johannes Stezenbach | 3a4a571 | 2005-05-16 21:54:29 -0700 | [diff] [blame] | 593 | .read_ber = nxt6000_read_ber, |
| 594 | .read_signal_strength = nxt6000_read_signal_strength, |
| 595 | .read_snr = nxt6000_read_snr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | }; |
| 597 | |
| 598 | module_param(debug, int, 0644); |
| 599 | MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); |
| 600 | |
| 601 | MODULE_DESCRIPTION("NxtWave NXT6000 DVB-T demodulator driver"); |
| 602 | MODULE_AUTHOR("Florian Schirmer"); |
| 603 | MODULE_LICENSE("GPL"); |
| 604 | |
| 605 | EXPORT_SYMBOL(nxt6000_attach); |