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 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 * 20 */ 21 22 #include "dvb_frontend.h" 23 #include "ttusbdecfe.h" 24 25 26 #define LOF_HI 10600000 27 #define LOF_LO 9750000 28 29 struct ttusbdecfe_state { 30 31 /* configuration settings */ 32 const struct ttusbdecfe_config* config; 33 34 struct dvb_frontend frontend; 35 36 u8 hi_band; 37 u8 voltage; 38 }; 39 40 41 static int ttusbdecfe_dvbs_read_status(struct dvb_frontend *fe, 42 fe_status_t *status) 43 { 44 *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | 45 FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; 46 return 0; 47 } 48 49 50 static int ttusbdecfe_dvbt_read_status(struct dvb_frontend *fe, 51 fe_status_t *status) 52 { 53 struct ttusbdecfe_state* state = fe->demodulator_priv; 54 u8 b[] = { 0x00, 0x00, 0x00, 0x00, 55 0x00, 0x00, 0x00, 0x00 }; 56 u8 result[4]; 57 int len, ret; 58 59 *status=0; 60 61 ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result); 62 if(ret) 63 return ret; 64 65 if(len != 4) { 66 printk(KERN_ERR "%s: unexpected reply\n", __func__); 67 return -EIO; 68 } 69 70 switch(result[3]) { 71 case 1: /* not tuned yet */ 72 case 2: /* no signal/no lock*/ 73 break; 74 case 3: /* signal found and locked*/ 75 *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | 76 FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; 77 break; 78 case 4: 79 *status = FE_TIMEDOUT; 80 break; 81 default: 82 pr_info("%s: returned unknown value: %d\n", 83 __func__, result[3]); 84 return -EIO; 85 } 86 87 return 0; 88 } 89 90 static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend *fe) 91 { 92 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 93 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 94 u8 b[] = { 0x00, 0x00, 0x00, 0x03, 95 0x00, 0x00, 0x00, 0x00, 96 0x00, 0x00, 0x00, 0x01, 97 0x00, 0x00, 0x00, 0xff, 98 0x00, 0x00, 0x00, 0xff }; 99 100 __be32 freq = htonl(p->frequency / 1000); 101 memcpy(&b[4], &freq, sizeof (u32)); 102 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); 103 104 return 0; 105 } 106 107 static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe, 108 struct dvb_frontend_tune_settings* fesettings) 109 { 110 fesettings->min_delay_ms = 1500; 111 /* Drift compensation makes no sense for DVB-T */ 112 fesettings->step_size = 0; 113 fesettings->max_drift = 0; 114 return 0; 115 } 116 117 static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend *fe) 118 { 119 struct dtv_frontend_properties *p = &fe->dtv_property_cache; 120 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 121 122 u8 b[] = { 0x00, 0x00, 0x00, 0x01, 123 0x00, 0x00, 0x00, 0x00, 124 0x00, 0x00, 0x00, 0x01, 125 0x00, 0x00, 0x00, 0x00, 126 0x00, 0x00, 0x00, 0x00, 127 0x00, 0x00, 0x00, 0x00, 128 0x00, 0x00, 0x00, 0x00, 129 0x00, 0x00, 0x00, 0x00, 130 0x00, 0x00, 0x00, 0x00, 131 0x00, 0x00, 0x00, 0x00 }; 132 __be32 freq; 133 __be32 sym_rate; 134 __be32 band; 135 __be32 lnb_voltage; 136 137 freq = htonl(p->frequency + 138 (state->hi_band ? LOF_HI : LOF_LO)); 139 memcpy(&b[4], &freq, sizeof(u32)); 140 sym_rate = htonl(p->symbol_rate); 141 memcpy(&b[12], &sym_rate, sizeof(u32)); 142 band = htonl(state->hi_band ? LOF_HI : LOF_LO); 143 memcpy(&b[24], &band, sizeof(u32)); 144 lnb_voltage = htonl(state->voltage); 145 memcpy(&b[28], &lnb_voltage, sizeof(u32)); 146 147 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); 148 149 return 0; 150 } 151 152 static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd) 153 { 154 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 155 u8 b[] = { 0x00, 0xff, 0x00, 0x00, 156 0x00, 0x00, 0x00, 0x00, 157 0x00, 0x00 }; 158 159 memcpy(&b[4], cmd->msg, cmd->msg_len); 160 161 state->config->send_command(fe, 0x72, 162 sizeof(b) - (6 - cmd->msg_len), b, 163 NULL, NULL); 164 165 return 0; 166 } 167 168 169 static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t 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, fe_sec_voltage_t voltage) 180 { 181 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 182 183 switch (voltage) { 184 case SEC_VOLTAGE_13: 185 state->voltage = 13; 186 break; 187 case SEC_VOLTAGE_18: 188 state->voltage = 18; 189 break; 190 default: 191 return -EINVAL; 192 } 193 194 return 0; 195 } 196 197 static void ttusbdecfe_release(struct dvb_frontend* fe) 198 { 199 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 200 kfree(state); 201 } 202 203 static struct dvb_frontend_ops ttusbdecfe_dvbt_ops; 204 205 struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config) 206 { 207 struct ttusbdecfe_state* state = NULL; 208 209 /* allocate memory for the internal state */ 210 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); 211 if (state == NULL) 212 return NULL; 213 214 /* setup the state */ 215 state->config = config; 216 217 /* create dvb_frontend */ 218 memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops)); 219 state->frontend.demodulator_priv = state; 220 return &state->frontend; 221 } 222 223 static struct dvb_frontend_ops ttusbdecfe_dvbs_ops; 224 225 struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config) 226 { 227 struct ttusbdecfe_state* state = NULL; 228 229 /* allocate memory for the internal state */ 230 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); 231 if (state == NULL) 232 return NULL; 233 234 /* setup the state */ 235 state->config = config; 236 state->voltage = 0; 237 state->hi_band = 0; 238 239 /* create dvb_frontend */ 240 memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops)); 241 state->frontend.demodulator_priv = state; 242 return &state->frontend; 243 } 244 245 static struct dvb_frontend_ops ttusbdecfe_dvbt_ops = { 246 .delsys = { SYS_DVBT }, 247 .info = { 248 .name = "TechnoTrend/Hauppauge DEC2000-t Frontend", 249 .frequency_min = 51000000, 250 .frequency_max = 858000000, 251 .frequency_stepsize = 62500, 252 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 253 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 254 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | 255 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | 256 FE_CAN_HIERARCHY_AUTO, 257 }, 258 259 .release = ttusbdecfe_release, 260 261 .set_frontend = ttusbdecfe_dvbt_set_frontend, 262 263 .get_tune_settings = ttusbdecfe_dvbt_get_tune_settings, 264 265 .read_status = ttusbdecfe_dvbt_read_status, 266 }; 267 268 static struct dvb_frontend_ops ttusbdecfe_dvbs_ops = { 269 .delsys = { SYS_DVBS }, 270 .info = { 271 .name = "TechnoTrend/Hauppauge DEC3000-s Frontend", 272 .frequency_min = 950000, 273 .frequency_max = 2150000, 274 .frequency_stepsize = 125, 275 .symbol_rate_min = 1000000, /* guessed */ 276 .symbol_rate_max = 45000000, /* guessed */ 277 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 278 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 279 FE_CAN_QPSK 280 }, 281 282 .release = ttusbdecfe_release, 283 284 .set_frontend = ttusbdecfe_dvbs_set_frontend, 285 286 .read_status = ttusbdecfe_dvbs_read_status, 287 288 .diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd, 289 .set_voltage = ttusbdecfe_dvbs_set_voltage, 290 .set_tone = ttusbdecfe_dvbs_set_tone, 291 }; 292 293 MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver"); 294 MODULE_AUTHOR("Alex Woods/Andrew de Quincey"); 295 MODULE_LICENSE("GPL"); 296 297 EXPORT_SYMBOL(ttusbdecfe_dvbt_attach); 298 EXPORT_SYMBOL(ttusbdecfe_dvbs_attach); 299