drivers/media/dvb/ttusb-dec/ttusbdecfe.c

   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         struct dvb_frontend_ops ops;
  32
  33         /* configuration settings */
  34         const struct ttusbdecfe_config* config;
  35
  36         struct dvb_frontend frontend;
  37
  38         u8 hi_band;
  39         u8 voltage;
  40 };
  41
  42
  43 static int ttusbdecfe_read_status(struct dvb_frontend* fe, fe_status_t* status)
  44 {
  45         *status = FE_HAS_SIGNAL | FE_HAS_VITERBI |
  46                   FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK;
  47
  48         return 0;
  49 }
  50
  51 static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
  52 {
  53         struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
  54         u8 b[] = { 0x00, 0x00, 0x00, 0x03,
  55                    0x00, 0x00, 0x00, 0x00,
  56                    0x00, 0x00, 0x00, 0x01,
  57                    0x00, 0x00, 0x00, 0xff,
  58                    0x00, 0x00, 0x00, 0xff };
  59
  60         u32 freq = htonl(p->frequency / 1000);
  61         memcpy(&b[4], &freq, sizeof (u32));
  62         state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL);
  63
  64         return 0;
  65 }
  66
  67 static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
  68 {
  69         struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
  70
  71         u8 b[] = { 0x00, 0x00, 0x00, 0x01,
  72                    0x00, 0x00, 0x00, 0x00,
  73                    0x00, 0x00, 0x00, 0x01,
  74                    0x00, 0x00, 0x00, 0x00,
  75                    0x00, 0x00, 0x00, 0x00,
  76                    0x00, 0x00, 0x00, 0x00,
  77                    0x00, 0x00, 0x00, 0x00,
  78                    0x00, 0x00, 0x00, 0x00,
  79                    0x00, 0x00, 0x00, 0x00,
  80                    0x00, 0x00, 0x00, 0x00 };
  81         u32 freq;
  82         u32 sym_rate;
  83         u32 band;
  84         u32 lnb_voltage;
  85
  86         freq = htonl(p->frequency +
  87                (state->hi_band ? LOF_HI : LOF_LO));
  88         memcpy(&b[4], &freq, sizeof(u32));
  89         sym_rate = htonl(p->u.qam.symbol_rate);
  90         memcpy(&b[12], &sym_rate, sizeof(u32));
  91         band = htonl(state->hi_band ? LOF_HI : LOF_LO);
  92         memcpy(&b[24], &band, sizeof(u32));
  93         lnb_voltage = htonl(state->voltage);
  94         memcpy(&b[28], &lnb_voltage, sizeof(u32));
  95
  96         state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL);
  97
  98         return 0;
  99 }
 100
 101 static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd)
 102 {
 103         struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
 104         u8 b[] = { 0x00, 0xff, 0x00, 0x00,
 105                    0x00, 0x00, 0x00, 0x00,
 106                    0x00, 0x00 };
 107
 108         memcpy(&b[4], cmd->msg, cmd->msg_len);
 109
 110         state->config->send_command(fe, 0x72,
 111                                     sizeof(b) - (6 - cmd->msg_len), b,
 112                                     NULL, NULL);
 113
 114         return 0;
 115 }
 116
 117
 118 static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
 119 {
 120         struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
 121
 122         state->hi_band = (SEC_TONE_ON == tone);
 123
 124         return 0;
 125 }
 126
 127
 128 static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
 129 {
 130         struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
 131
 132         switch (voltage) {
 133         case SEC_VOLTAGE_13:
 134                 state->voltage = 13;
 135                 break;
 136         case SEC_VOLTAGE_18:
 137                 state->voltage = 18;
 138                 break;
 139         default:
 140                 return -EINVAL;
 141         }
 142
 143         return 0;
 144 }
 145
 146 static void ttusbdecfe_release(struct dvb_frontend* fe)
 147 {
 148         struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
 149         kfree(state);
 150 }
 151
 152 static struct dvb_frontend_ops ttusbdecfe_dvbt_ops;
 153
 154 struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config)
 155 {
 156         struct ttusbdecfe_state* state = NULL;
 157
 158         /* allocate memory for the internal state */
 159         state = (struct ttusbdecfe_state*) kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL);
 160         if (state == NULL) goto error;
 161
 162         /* setup the state */
 163         state->config = config;
 164         memcpy(&state->ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops));
 165
 166         /* create dvb_frontend */
 167         state->frontend.ops = &state->ops;
 168         state->frontend.demodulator_priv = state;
 169         return &state->frontend;
 170
 171 error:
 172         kfree(state);
 173         return NULL;
 174 }
 175
 176 static struct dvb_frontend_ops ttusbdecfe_dvbs_ops;
 177
 178 struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config)
 179 {
 180         struct ttusbdecfe_state* state = NULL;
 181
 182         /* allocate memory for the internal state */
 183         state = (struct ttusbdecfe_state*) kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL);
 184         if (state == NULL) goto error;
 185
 186         /* setup the state */
 187         state->config = config;
 188         state->voltage = 0;
 189         state->hi_band = 0;
 190         memcpy(&state->ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops));
 191
 192         /* create dvb_frontend */
 193         state->frontend.ops = &state->ops;
 194         state->frontend.demodulator_priv = state;
 195         return &state->frontend;
 196
 197 error:
 198         kfree(state);
 199         return NULL;
 200 }
 201
 202 static struct dvb_frontend_ops ttusbdecfe_dvbt_ops = {
 203
 204         .info = {
 205                 .name                   = "TechnoTrend/Hauppauge DEC2000-t Frontend",
 206                 .type                   = FE_OFDM,
 207                 .frequency_min          = 51000000,
 208                 .frequency_max          = 858000000,
 209                 .frequency_stepsize     = 62500,
 210                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 211                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 212                         FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 213                         FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
 214                         FE_CAN_HIERARCHY_AUTO,
 215         },
 216
 217         .release = ttusbdecfe_release,
 218
 219         .set_frontend = ttusbdecfe_dvbt_set_frontend,
 220
 221         .read_status = ttusbdecfe_read_status,
 222 };
 223
 224 static struct dvb_frontend_ops ttusbdecfe_dvbs_ops = {
 225
 226         .info = {
 227                 .name                   = "TechnoTrend/Hauppauge DEC3000-s Frontend",
 228                 .type                   = FE_QPSK,
 229                 .frequency_min          = 950000,
 230                 .frequency_max          = 2150000,
 231                 .frequency_stepsize     = 125,
 232                 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
 233                         FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
 234                         FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
 235                         FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
 236                         FE_CAN_HIERARCHY_AUTO,
 237         },
 238
 239         .release = ttusbdecfe_release,
 240
 241         .set_frontend = ttusbdecfe_dvbs_set_frontend,
 242
 243         .read_status = ttusbdecfe_read_status,
 244
 245         .diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd,
 246         .set_voltage = ttusbdecfe_dvbs_set_voltage,
 247         .set_tone = ttusbdecfe_dvbs_set_tone,
 248 };
 249
 250 MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver");
 251 MODULE_AUTHOR("Alex Woods/Andrew de Quincey");
 252 MODULE_LICENSE("GPL");
 253
 254 EXPORT_SYMBOL(ttusbdecfe_dvbt_attach);
 255 EXPORT_SYMBOL(ttusbdecfe_dvbs_attach);