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 29struct 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 41static 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 50static 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 90static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) 91{ 92 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 93 u8 b[] = { 0x00, 0x00, 0x00, 0x03, 94 0x00, 0x00, 0x00, 0x00, 95 0x00, 0x00, 0x00, 0x01, 96 0x00, 0x00, 0x00, 0xff, 97 0x00, 0x00, 0x00, 0xff }; 98 99 __be32 freq = htonl(p->frequency / 1000); 100 memcpy(&b[4], &freq, sizeof (u32)); 101 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); 102 103 return 0; 104} 105 106static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe, 107 struct dvb_frontend_tune_settings* fesettings) 108{ 109 fesettings->min_delay_ms = 1500; 110 /* Drift compensation makes no sense for DVB-T */ 111 fesettings->step_size = 0; 112 fesettings->max_drift = 0; 113 return 0; 114} 115 116static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) 117{ 118 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 119 120 u8 b[] = { 0x00, 0x00, 0x00, 0x01, 121 0x00, 0x00, 0x00, 0x00, 122 0x00, 0x00, 0x00, 0x01, 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 0x00, 0x00, 0x00, 0x00, 129 0x00, 0x00, 0x00, 0x00 }; 130 __be32 freq; 131 __be32 sym_rate; 132 __be32 band; 133 __be32 lnb_voltage; 134 135 freq = htonl(p->frequency + 136 (state->hi_band ? LOF_HI : LOF_LO)); 137 memcpy(&b[4], &freq, sizeof(u32)); 138 sym_rate = htonl(p->u.qam.symbol_rate); 139 memcpy(&b[12], &sym_rate, sizeof(u32)); 140 band = htonl(state->hi_band ? LOF_HI : LOF_LO); 141 memcpy(&b[24], &band, sizeof(u32)); 142 lnb_voltage = htonl(state->voltage); 143 memcpy(&b[28], &lnb_voltage, sizeof(u32)); 144 145 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); 146 147 return 0; 148} 149 150static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd) 151{ 152 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 153 u8 b[] = { 0x00, 0xff, 0x00, 0x00, 154 0x00, 0x00, 0x00, 0x00, 155 0x00, 0x00 }; 156 157 memcpy(&b[4], cmd->msg, cmd->msg_len); 158 159 state->config->send_command(fe, 0x72, 160 sizeof(b) - (6 - cmd->msg_len), b, 161 NULL, NULL); 162 163 return 0; 164} 165 166 167static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone) 168{ 169 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 170 171 state->hi_band = (SEC_TONE_ON == tone); 172 173 return 0; 174} 175 176 177static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage) 178{ 179 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 180 181 switch (voltage) { 182 case SEC_VOLTAGE_13: 183 state->voltage = 13; 184 break; 185 case SEC_VOLTAGE_18: 186 state->voltage = 18; 187 break; 188 default: 189 return -EINVAL; 190 } 191 192 return 0; 193} 194 195static void ttusbdecfe_release(struct dvb_frontend* fe) 196{ 197 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 198 kfree(state); 199} 200 201static struct dvb_frontend_ops ttusbdecfe_dvbt_ops; 202 203struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config) 204{ 205 struct ttusbdecfe_state* state = NULL; 206 207 /* allocate memory for the internal state */ 208 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); 209 if (state == NULL) 210 return NULL; 211 212 /* setup the state */ 213 state->config = config; 214 215 /* create dvb_frontend */ 216 memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops)); 217 state->frontend.demodulator_priv = state; 218 return &state->frontend; 219} 220 221static struct dvb_frontend_ops ttusbdecfe_dvbs_ops; 222 223struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config) 224{ 225 struct ttusbdecfe_state* state = NULL; 226 227 /* allocate memory for the internal state */ 228 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); 229 if (state == NULL) 230 return NULL; 231 232 /* setup the state */ 233 state->config = config; 234 state->voltage = 0; 235 state->hi_band = 0; 236 237 /* create dvb_frontend */ 238 memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops)); 239 state->frontend.demodulator_priv = state; 240 return &state->frontend; 241} 242 243static struct dvb_frontend_ops ttusbdecfe_dvbt_ops = { 244 245 .info = { 246 .name = "TechnoTrend/Hauppauge DEC2000-t Frontend", 247 .type = FE_OFDM, 248 .frequency_min = 51000000, 249 .frequency_max = 858000000, 250 .frequency_stepsize = 62500, 251 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 252 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 253 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | 254 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | 255 FE_CAN_HIERARCHY_AUTO, 256 }, 257 258 .release = ttusbdecfe_release, 259 260 .set_frontend = ttusbdecfe_dvbt_set_frontend, 261 262 .get_tune_settings = ttusbdecfe_dvbt_get_tune_settings, 263 264 .read_status = ttusbdecfe_dvbt_read_status, 265}; 266 267static struct dvb_frontend_ops ttusbdecfe_dvbs_ops = { 268 269 .info = { 270 .name = "TechnoTrend/Hauppauge DEC3000-s Frontend", 271 .type = FE_QPSK, 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 293MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver"); 294MODULE_AUTHOR("Alex Woods/Andrew de Quincey"); 295MODULE_LICENSE("GPL"); 296 297EXPORT_SYMBOL(ttusbdecfe_dvbt_attach); 298EXPORT_SYMBOL(ttusbdecfe_dvbs_attach); 299