1/* 2 * Driver for Dummy Frontend 3 * 4 * Written by Emard <emard@softhome.net> 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 * 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.= 20 */ 21 22#include <linux/module.h> 23#include <linux/init.h> 24#include <linux/string.h> 25#include <linux/slab.h> 26 27#include "dvb_frontend.h" 28#include "dvb_dummy_fe.h" 29 30 31struct dvb_dummy_fe_state { 32 struct dvb_frontend frontend; 33}; 34 35 36static int dvb_dummy_fe_read_status(struct dvb_frontend* fe, fe_status_t* status) 37{ 38 *status = FE_HAS_SIGNAL 39 | FE_HAS_CARRIER 40 | FE_HAS_VITERBI 41 | FE_HAS_SYNC 42 | FE_HAS_LOCK; 43 44 return 0; 45} 46 47static int dvb_dummy_fe_read_ber(struct dvb_frontend* fe, u32* ber) 48{ 49 *ber = 0; 50 return 0; 51} 52 53static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength) 54{ 55 *strength = 0; 56 return 0; 57} 58 59static int dvb_dummy_fe_read_snr(struct dvb_frontend* fe, u16* snr) 60{ 61 *snr = 0; 62 return 0; 63} 64 65static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) 66{ 67 *ucblocks = 0; 68 return 0; 69} 70 71static int dvb_dummy_fe_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) 72{ 73 return 0; 74} 75 76static int dvb_dummy_fe_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) 77{ 78 if (fe->ops.tuner_ops.set_params) { 79 fe->ops.tuner_ops.set_params(fe, p); 80 if (fe->ops.i2c_gate_ctrl) 81 fe->ops.i2c_gate_ctrl(fe, 0); 82 } 83 84 return 0; 85} 86 87static int dvb_dummy_fe_sleep(struct dvb_frontend* fe) 88{ 89 return 0; 90} 91 92static int dvb_dummy_fe_init(struct dvb_frontend* fe) 93{ 94 return 0; 95} 96 97static int dvb_dummy_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone) 98{ 99 return 0; 100} 101 102static int dvb_dummy_fe_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage) 103{ 104 return 0; 105} 106 107static void dvb_dummy_fe_release(struct dvb_frontend* fe) 108{ 109 struct dvb_dummy_fe_state* state = fe->demodulator_priv; 110 kfree(state); 111} 112 113static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops; 114 115struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void) 116{ 117 struct dvb_dummy_fe_state* state = NULL; 118 119 /* allocate memory for the internal state */ 120 state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); 121 if (state == NULL) goto error; 122 123 /* create dvb_frontend */ 124 memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops)); 125 state->frontend.demodulator_priv = state; 126 return &state->frontend; 127 128error: 129 kfree(state); 130 return NULL; 131} 132 133static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops; 134 135struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void) 136{ 137 struct dvb_dummy_fe_state* state = NULL; 138 139 /* allocate memory for the internal state */ 140 state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); 141 if (state == NULL) goto error; 142 143 /* create dvb_frontend */ 144 memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops)); 145 state->frontend.demodulator_priv = state; 146 return &state->frontend; 147 148error: 149 kfree(state); 150 return NULL; 151} 152 153static struct dvb_frontend_ops dvb_dummy_fe_qam_ops; 154 155struct dvb_frontend *dvb_dummy_fe_qam_attach(void) 156{ 157 struct dvb_dummy_fe_state* state = NULL; 158 159 /* allocate memory for the internal state */ 160 state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); 161 if (state == NULL) goto error; 162 163 /* create dvb_frontend */ 164 memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops)); 165 state->frontend.demodulator_priv = state; 166 return &state->frontend; 167 168error: 169 kfree(state); 170 return NULL; 171} 172 173static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = { 174 175 .info = { 176 .name = "Dummy DVB-T", 177 .type = FE_OFDM, 178 .frequency_min = 0, 179 .frequency_max = 863250000, 180 .frequency_stepsize = 62500, 181 .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 182 FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 | 183 FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO | 184 FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | 185 FE_CAN_TRANSMISSION_MODE_AUTO | 186 FE_CAN_GUARD_INTERVAL_AUTO | 187 FE_CAN_HIERARCHY_AUTO, 188 }, 189 190 .release = dvb_dummy_fe_release, 191 192 .init = dvb_dummy_fe_init, 193 .sleep = dvb_dummy_fe_sleep, 194 195 .set_frontend = dvb_dummy_fe_set_frontend, 196 .get_frontend = dvb_dummy_fe_get_frontend, 197 198 .read_status = dvb_dummy_fe_read_status, 199 .read_ber = dvb_dummy_fe_read_ber, 200 .read_signal_strength = dvb_dummy_fe_read_signal_strength, 201 .read_snr = dvb_dummy_fe_read_snr, 202 .read_ucblocks = dvb_dummy_fe_read_ucblocks, 203}; 204 205static struct dvb_frontend_ops dvb_dummy_fe_qam_ops = { 206 207 .info = { 208 .name = "Dummy DVB-C", 209 .type = FE_QAM, 210 .frequency_stepsize = 62500, 211 .frequency_min = 51000000, 212 .frequency_max = 858000000, 213 .symbol_rate_min = (57840000/2)/64, /* SACLK/64 == (XIN/2)/64 */ 214 .symbol_rate_max = (57840000/2)/4, /* SACLK/4 */ 215 .caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 | 216 FE_CAN_QAM_128 | FE_CAN_QAM_256 | 217 FE_CAN_FEC_AUTO | FE_CAN_INVERSION_AUTO 218 }, 219 220 .release = dvb_dummy_fe_release, 221 222 .init = dvb_dummy_fe_init, 223 .sleep = dvb_dummy_fe_sleep, 224 225 .set_frontend = dvb_dummy_fe_set_frontend, 226 .get_frontend = dvb_dummy_fe_get_frontend, 227 228 .read_status = dvb_dummy_fe_read_status, 229 .read_ber = dvb_dummy_fe_read_ber, 230 .read_signal_strength = dvb_dummy_fe_read_signal_strength, 231 .read_snr = dvb_dummy_fe_read_snr, 232 .read_ucblocks = dvb_dummy_fe_read_ucblocks, 233}; 234 235static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = { 236 237 .info = { 238 .name = "Dummy DVB-S", 239 .type = FE_QPSK, 240 .frequency_min = 950000, 241 .frequency_max = 2150000, 242 .frequency_stepsize = 250, /* kHz for QPSK frontends */ 243 .frequency_tolerance = 29500, 244 .symbol_rate_min = 1000000, 245 .symbol_rate_max = 45000000, 246 .caps = FE_CAN_INVERSION_AUTO | 247 FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | 248 FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | 249 FE_CAN_QPSK 250 }, 251 252 .release = dvb_dummy_fe_release, 253 254 .init = dvb_dummy_fe_init, 255 .sleep = dvb_dummy_fe_sleep, 256 257 .set_frontend = dvb_dummy_fe_set_frontend, 258 .get_frontend = dvb_dummy_fe_get_frontend, 259 260 .read_status = dvb_dummy_fe_read_status, 261 .read_ber = dvb_dummy_fe_read_ber, 262 .read_signal_strength = dvb_dummy_fe_read_signal_strength, 263 .read_snr = dvb_dummy_fe_read_snr, 264 .read_ucblocks = dvb_dummy_fe_read_ucblocks, 265 266 .set_voltage = dvb_dummy_fe_set_voltage, 267 .set_tone = dvb_dummy_fe_set_tone, 268}; 269 270MODULE_DESCRIPTION("DVB DUMMY Frontend"); 271MODULE_AUTHOR("Emard"); 272MODULE_LICENSE("GPL"); 273 274EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach); 275EXPORT_SYMBOL(dvb_dummy_fe_qam_attach); 276EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach); 277