1 /* 2 * TTUSB DEC Frontend Driver 3 * 4 * Copyright (C) 2003-2004 Alex Woods <linux-dvb@giblets.org> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 */ 17 18 #include <media/dvb_frontend.h> 19 #include "ttusbdecfe.h" 20 21 22 #define LOF_HI 10600000 23 #define LOF_LO 9750000 24 25 struct ttusbdecfe_state { 26 27 /* configuration settings */ 28 const struct ttusbdecfe_config* config; 29 30 struct dvb_frontend frontend; 31 32 u8 hi_band; 33 u8 voltage; 34 }; 35 36 37 static int ttusbdecfe_dvbs_read_status(struct dvb_frontend *fe, 38 enum fe_status *status) 39 { 40 *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | 41 FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; 42 return 0; 43 } 44 45 46 static int ttusbdecfe_dvbt_read_status(struct dvb_frontend *fe, 47 enum fe_status *status) 48 { 49 struct ttusbdecfe_state* state = fe->demodulator_priv; 50 u8 b[] = { 0x00, 0x00, 0x00, 0x00, 51 0x00, 0x00, 0x00, 0x00 }; 52 u8 result[4]; 53 int len, ret; 54 55 *status=0; 56 57 ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result); 58 if(ret) 59 return ret; 60 61 if(len != 4) { 62 printk(KERN_ERR "%s: unexpected reply\n", __func__); 63 return -EIO; 64 } 65 66 switch(result[3]) { 67 case 1: /* not tuned yet */ 68 case 2: /* no signal/no lock*/ 69 break; 70 case 3: /* signal found and locked*/ 71 *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | 72 FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; 73 break; 74 case 4: 75 *status = FE_TIMEDOUT; 76 break; 77 default: 78 pr_info("%s: returned unknown value: %d\n", 79 __func__, result[3]); 80 return -EIO; 81 } 82 83 return 0; 84 } 85 86 static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend *fe) 87 { 88 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 89 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 90 u8 b[] = { 0x00, 0x00, 0x00, 0x03, 91 0x00, 0x00, 0x00, 0x00, 92 0x00, 0x00, 0x00, 0x01, 93 0x00, 0x00, 0x00, 0xff, 94 0x00, 0x00, 0x00, 0xff }; 95 96 __be32 freq = htonl(p->frequency / 1000); 97 memcpy(&b[4], &freq, sizeof (u32)); 98 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); 99 100 return 0; 101 } 102 103 static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe, 104 struct dvb_frontend_tune_settings* fesettings) 105 { 106 fesettings->min_delay_ms = 1500; 107 /* Drift compensation makes no sense for DVB-T */ 108 fesettings->step_size = 0; 109 fesettings->max_drift = 0; 110 return 0; 111 } 112 113 static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend *fe) 114 { 115 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 116 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 117 118 u8 b[] = { 0x00, 0x00, 0x00, 0x01, 119 0x00, 0x00, 0x00, 0x00, 120 0x00, 0x00, 0x00, 0x01, 121 0x00, 0x00, 0x00, 0x00, 122 0x00, 0x00, 0x00, 0x00, 123 0x00, 0x00, 0x00, 0x00, 124 0x00, 0x00, 0x00, 0x00, 125 0x00, 0x00, 0x00, 0x00, 126 0x00, 0x00, 0x00, 0x00, 127 0x00, 0x00, 0x00, 0x00 }; 128 __be32 freq; 129 __be32 sym_rate; 130 __be32 band; 131 __be32 lnb_voltage; 132 133 freq = htonl(p->frequency + 134 (state->hi_band ? LOF_HI : LOF_LO)); 135 memcpy(&b[4], &freq, sizeof(u32)); 136 sym_rate = htonl(p->symbol_rate); 137 memcpy(&b[12], &sym_rate, sizeof(u32)); 138 band = htonl(state->hi_band ? LOF_HI : LOF_LO); 139 memcpy(&b[24], &band, sizeof(u32)); 140 lnb_voltage = htonl(state->voltage); 141 memcpy(&b[28], &lnb_voltage, sizeof(u32)); 142 143 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); 144 145 return 0; 146 } 147 148 static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd) 149 { 150 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 151 u8 b[] = { 0x00, 0xff, 0x00, 0x00, 152 0x00, 0x00, 0x00, 0x00, 153 0x00, 0x00 }; 154 155 if (cmd->msg_len > sizeof(b) - 4) 156 return -EINVAL; 157 158 memcpy(&b[4], cmd->msg, cmd->msg_len); 159 160 state->config->send_command(fe, 0x72, 161 sizeof(b) - (6 - cmd->msg_len), b, 162 NULL, NULL); 163 164 return 0; 165 } 166 167 168 static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend *fe, 169 enum fe_sec_tone_mode tone) 170 { 171 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 172 173 state->hi_band = (SEC_TONE_ON == tone); 174 175 return 0; 176 } 177 178 179 static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend *fe, 180 enum fe_sec_voltage voltage) 181 { 182 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 183 184 switch (voltage) { 185 case SEC_VOLTAGE_13: 186 state->voltage = 13; 187 break; 188 case SEC_VOLTAGE_18: 189 state->voltage = 18; 190 break; 191 default: 192 return -EINVAL; 193 } 194 195 return 0; 196 } 197 198 static void ttusbdecfe_release(struct dvb_frontend* fe) 199 { 200 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 201 kfree(state); 202 } 203 204 static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops; 205 206 struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config) 207 { 208 struct ttusbdecfe_state* state = NULL; 209 210 /* allocate memory for the internal state */ 211 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); 212 if (state == NULL) 213 return NULL; 214 215 /* setup the state */ 216 state->config = config; 217 218 /* create dvb_frontend */ 219 memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops)); 220 state->frontend.demodulator_priv = state; 221 return &state->frontend; 222 } 223 224 static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops; 225 226 struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config) 227 { 228 struct ttusbdecfe_state* state = NULL; 229 230 /* allocate memory for the internal state */ 231 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); 232 if (state == NULL) 233 return NULL; 234 235 /* setup the state */ 236 state->config = config; 237 state->voltage = 0; 238 state->hi_band = 0; 239 240 /* create dvb_frontend */ 241 memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops)); 242 state->frontend.demodulator_priv = state; 243 return &state->frontend; 244 } 245 246 static const struct dvb_frontend_ops ttusbdecfe_dvbt_ops = { 247 .delsys = { SYS_DVBT }, 248 .info = { 249 .name = "TechnoTrend/Hauppauge DEC2000-t Frontend", 250 .frequency_min = 51000000, 251 .frequency_max = 858000000, 252 .frequency_stepsize = 62500, 253 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 254 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 255 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | 256 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | 257 FE_CAN_HIERARCHY_AUTO, 258 }, 259 260 .release = ttusbdecfe_release, 261 262 .set_frontend = ttusbdecfe_dvbt_set_frontend, 263 264 .get_tune_settings = ttusbdecfe_dvbt_get_tune_settings, 265 266 .read_status = ttusbdecfe_dvbt_read_status, 267 }; 268 269 static const struct dvb_frontend_ops ttusbdecfe_dvbs_ops = { 270 .delsys = { SYS_DVBS }, 271 .info = { 272 .name = "TechnoTrend/Hauppauge DEC3000-s Frontend", 273 .frequency_min = 950000, 274 .frequency_max = 2150000, 275 .frequency_stepsize = 125, 276 .symbol_rate_min = 1000000, /* guessed */ 277 .symbol_rate_max = 45000000, /* guessed */ 278 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 279 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 280 FE_CAN_QPSK 281 }, 282 283 .release = ttusbdecfe_release, 284 285 .set_frontend = ttusbdecfe_dvbs_set_frontend, 286 287 .read_status = ttusbdecfe_dvbs_read_status, 288 289 .diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd, 290 .set_voltage = ttusbdecfe_dvbs_set_voltage, 291 .set_tone = ttusbdecfe_dvbs_set_tone, 292 }; 293 294 MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver"); 295 MODULE_AUTHOR("Alex Woods/Andrew de Quincey"); 296 MODULE_LICENSE("GPL"); 297 298 EXPORT_SYMBOL(ttusbdecfe_dvbt_attach); 299 EXPORT_SYMBOL(ttusbdecfe_dvbs_attach); 300