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_read_status(struct dvb_frontend* fe, fe_status_t* status) 42{ 43 struct ttusbdecfe_state* state = fe->demodulator_priv; 44 u8 b[] = { 0x00, 0x00, 0x00, 0x00, 45 0x00, 0x00, 0x00, 0x00 }; 46 u8 result[4]; 47 int len, ret; 48 49 *status=0; 50 51 ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result); 52 if(ret) 53 return ret; 54 55 if(len != 4) { 56 printk(KERN_ERR "%s: unexpected reply\n", __FUNCTION__); 57 return -EIO; 58 } 59 60 switch(result[3]) { 61 case 1: /* not tuned yet */ 62 case 2: /* no signal/no lock*/ 63 break; 64 case 3: /* signal found and locked*/ 65 *status = FE_HAS_SIGNAL | FE_HAS_VITERBI | 66 FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK; 67 break; 68 case 4: 69 *status = FE_TIMEDOUT; 70 break; 71 default: 72 pr_info("%s: returned unknown value: %d\n", 73 __FUNCTION__, result[3]); 74 return -EIO; 75 } 76 77 return 0; 78} 79 80static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) 81{ 82 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 83 u8 b[] = { 0x00, 0x00, 0x00, 0x03, 84 0x00, 0x00, 0x00, 0x00, 85 0x00, 0x00, 0x00, 0x01, 86 0x00, 0x00, 0x00, 0xff, 87 0x00, 0x00, 0x00, 0xff }; 88 89 u32 freq = htonl(p->frequency / 1000); 90 memcpy(&b[4], &freq, sizeof (u32)); 91 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); 92 93 return 0; 94} 95 96static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe, 97 struct dvb_frontend_tune_settings* fesettings) 98{ 99 fesettings->min_delay_ms = 1500; 100 /* Drift compensation makes no sense for DVB-T */ 101 fesettings->step_size = 0; 102 fesettings->max_drift = 0; 103 return 0; 104} 105 106static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) 107{ 108 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 109 110 u8 b[] = { 0x00, 0x00, 0x00, 0x01, 111 0x00, 0x00, 0x00, 0x00, 112 0x00, 0x00, 0x00, 0x01, 113 0x00, 0x00, 0x00, 0x00, 114 0x00, 0x00, 0x00, 0x00, 115 0x00, 0x00, 0x00, 0x00, 116 0x00, 0x00, 0x00, 0x00, 117 0x00, 0x00, 0x00, 0x00, 118 0x00, 0x00, 0x00, 0x00, 119 0x00, 0x00, 0x00, 0x00 }; 120 u32 freq; 121 u32 sym_rate; 122 u32 band; 123 u32 lnb_voltage; 124 125 freq = htonl(p->frequency + 126 (state->hi_band ? LOF_HI : LOF_LO)); 127 memcpy(&b[4], &freq, sizeof(u32)); 128 sym_rate = htonl(p->u.qam.symbol_rate); 129 memcpy(&b[12], &sym_rate, sizeof(u32)); 130 band = htonl(state->hi_band ? LOF_HI : LOF_LO); 131 memcpy(&b[24], &band, sizeof(u32)); 132 lnb_voltage = htonl(state->voltage); 133 memcpy(&b[28], &lnb_voltage, sizeof(u32)); 134 135 state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL); 136 137 return 0; 138} 139 140static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd) 141{ 142 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 143 u8 b[] = { 0x00, 0xff, 0x00, 0x00, 144 0x00, 0x00, 0x00, 0x00, 145 0x00, 0x00 }; 146 147 memcpy(&b[4], cmd->msg, cmd->msg_len); 148 149 state->config->send_command(fe, 0x72, 150 sizeof(b) - (6 - cmd->msg_len), b, 151 NULL, NULL); 152 153 return 0; 154} 155 156 157static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone) 158{ 159 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 160 161 state->hi_band = (SEC_TONE_ON == tone); 162 163 return 0; 164} 165 166 167static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage) 168{ 169 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 170 171 switch (voltage) { 172 case SEC_VOLTAGE_13: 173 state->voltage = 13; 174 break; 175 case SEC_VOLTAGE_18: 176 state->voltage = 18; 177 break; 178 default: 179 return -EINVAL; 180 } 181 182 return 0; 183} 184 185static void ttusbdecfe_release(struct dvb_frontend* fe) 186{ 187 struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv; 188 kfree(state); 189} 190 191static struct dvb_frontend_ops ttusbdecfe_dvbt_ops; 192 193struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config) 194{ 195 struct ttusbdecfe_state* state = NULL; 196 197 /* allocate memory for the internal state */ 198 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); 199 if (state == NULL) 200 return NULL; 201 202 /* setup the state */ 203 state->config = config; 204 205 /* create dvb_frontend */ 206 memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops)); 207 state->frontend.demodulator_priv = state; 208 return &state->frontend; 209} 210 211static struct dvb_frontend_ops ttusbdecfe_dvbs_ops; 212 213struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config) 214{ 215 struct ttusbdecfe_state* state = NULL; 216 217 /* allocate memory for the internal state */ 218 state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL); 219 if (state == NULL) 220 return NULL; 221 222 /* setup the state */ 223 state->config = config; 224 state->voltage = 0; 225 state->hi_band = 0; 226 227 /* create dvb_frontend */ 228 memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops)); 229 state->frontend.demodulator_priv = state; 230 return &state->frontend; 231} 232 233static struct dvb_frontend_ops ttusbdecfe_dvbt_ops = { 234 235 .info = { 236 .name = "TechnoTrend/Hauppauge DEC2000-t Frontend", 237 .type = FE_OFDM, 238 .frequency_min = 51000000, 239 .frequency_max = 858000000, 240 .frequency_stepsize = 62500, 241 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 242 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 243 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | 244 FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO | 245 FE_CAN_HIERARCHY_AUTO, 246 }, 247 248 .release = ttusbdecfe_release, 249 250 .set_frontend = ttusbdecfe_dvbt_set_frontend, 251 252 .get_tune_settings = ttusbdecfe_dvbt_get_tune_settings, 253 254 .read_status = ttusbdecfe_read_status, 255}; 256 257static struct dvb_frontend_ops ttusbdecfe_dvbs_ops = { 258 259 .info = { 260 .name = "TechnoTrend/Hauppauge DEC3000-s Frontend", 261 .type = FE_QPSK, 262 .frequency_min = 950000, 263 .frequency_max = 2150000, 264 .frequency_stepsize = 125, 265 .symbol_rate_min = 1000000, /* guessed */ 266 .symbol_rate_max = 45000000, /* guessed */ 267 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 268 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 269 FE_CAN_QPSK 270 }, 271 272 .release = ttusbdecfe_release, 273 274 .set_frontend = ttusbdecfe_dvbs_set_frontend, 275 276 .read_status = ttusbdecfe_read_status, 277 278 .diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd, 279 .set_voltage = ttusbdecfe_dvbs_set_voltage, 280 .set_tone = ttusbdecfe_dvbs_set_tone, 281}; 282 283MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver"); 284MODULE_AUTHOR("Alex Woods/Andrew de Quincey"); 285MODULE_LICENSE("GPL"); 286 287EXPORT_SYMBOL(ttusbdecfe_dvbt_attach); 288EXPORT_SYMBOL(ttusbdecfe_dvbs_attach); 289