Alan Nisota | 9bbe076 | 2006-05-14 13:23:56 -0300 | [diff] [blame] | 1 | /* DVB USB compliant Linux driver for the |
| 2 | * - GENPIX 8pks/qpsk USB2.0 DVB-S module |
| 3 | * |
| 4 | * Copyright (C) 2006 Alan Nisota (alannisota@gmail.com) |
| 5 | * |
| 6 | * Thanks to GENPIX for the sample code used to implement this module. |
| 7 | * |
| 8 | * This module is based off the vp7045 and vp702x modules |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the Free |
| 12 | * Software Foundation, version 2. |
| 13 | * |
| 14 | * see Documentation/dvb/README.dvb-usb for more information |
| 15 | */ |
| 16 | #include "gp8psk.h" |
| 17 | |
| 18 | struct gp8psk_fe_state { |
| 19 | struct dvb_frontend fe; |
| 20 | |
| 21 | struct dvb_usb_device *d; |
| 22 | |
| 23 | u16 snr; |
| 24 | |
| 25 | unsigned long next_snr_check; |
| 26 | }; |
| 27 | |
| 28 | static int gp8psk_fe_read_status(struct dvb_frontend* fe, fe_status_t *status) |
| 29 | { |
| 30 | struct gp8psk_fe_state *st = fe->demodulator_priv; |
| 31 | u8 lock; |
| 32 | |
| 33 | if (gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0, 0, &lock,1)) |
| 34 | return -EINVAL; |
| 35 | |
| 36 | if (lock) |
| 37 | *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER; |
| 38 | else |
| 39 | *status = 0; |
| 40 | |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | /* not supported by this Frontend */ |
| 45 | static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber) |
| 46 | { |
| 47 | (void) fe; |
| 48 | *ber = 0; |
| 49 | return 0; |
| 50 | } |
| 51 | |
| 52 | /* not supported by this Frontend */ |
| 53 | static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc) |
| 54 | { |
| 55 | (void) fe; |
| 56 | *unc = 0; |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr) |
| 61 | { |
| 62 | struct gp8psk_fe_state *st = fe->demodulator_priv; |
| 63 | u8 buf[2]; |
| 64 | |
| 65 | if (time_after(jiffies,st->next_snr_check)) { |
| 66 | gp8psk_usb_in_op(st->d,GET_SIGNAL_STRENGTH,0,0,buf,2); |
| 67 | *snr = (int)(buf[1]) << 8 | buf[0]; |
| 68 | /* snr is reported in dBu*256 */ |
| 69 | /* snr / 38.4 ~= 100% strength */ |
| 70 | /* snr * 17 returns 100% strength as 65535 */ |
| 71 | if (*snr <= 3855) |
| 72 | *snr = (*snr<<4) + *snr; // snr * 17 |
| 73 | else |
| 74 | *snr = 65535; |
| 75 | st->next_snr_check = jiffies + (10*HZ)/1000; |
| 76 | } else { |
| 77 | *snr = st->snr; |
| 78 | } |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength) |
| 83 | { |
| 84 | return gp8psk_fe_read_snr(fe, strength); |
| 85 | } |
| 86 | |
| 87 | static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) |
| 88 | { |
| 89 | tune->min_delay_ms = 800; |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | static int gp8psk_fe_set_frontend(struct dvb_frontend* fe, |
| 94 | struct dvb_frontend_parameters *fep) |
| 95 | { |
| 96 | struct gp8psk_fe_state *state = fe->demodulator_priv; |
| 97 | u8 cmd[10]; |
| 98 | u32 freq = fep->frequency * 1000; |
| 99 | |
| 100 | cmd[4] = freq & 0xff; |
| 101 | cmd[5] = (freq >> 8) & 0xff; |
| 102 | cmd[6] = (freq >> 16) & 0xff; |
| 103 | cmd[7] = (freq >> 24) & 0xff; |
| 104 | |
| 105 | switch(fe->ops.info.type) { |
| 106 | case FE_QPSK: |
| 107 | cmd[0] = fep->u.qpsk.symbol_rate & 0xff; |
| 108 | cmd[1] = (fep->u.qpsk.symbol_rate >> 8) & 0xff; |
| 109 | cmd[2] = (fep->u.qpsk.symbol_rate >> 16) & 0xff; |
| 110 | cmd[3] = (fep->u.qpsk.symbol_rate >> 24) & 0xff; |
| 111 | cmd[8] = ADV_MOD_DVB_QPSK; |
| 112 | cmd[9] = 0x03; /*ADV_MOD_FEC_XXX*/ |
| 113 | break; |
| 114 | default: |
| 115 | // other modes are unsuported right now |
| 116 | cmd[0] = 0; |
| 117 | cmd[1] = 0; |
| 118 | cmd[2] = 0; |
| 119 | cmd[3] = 0; |
| 120 | cmd[8] = 0; |
| 121 | cmd[9] = 0; |
| 122 | break; |
| 123 | } |
| 124 | |
| 125 | gp8psk_usb_out_op(state->d,TUNE_8PSK,0,0,cmd,10); |
| 126 | |
| 127 | state->next_snr_check = jiffies; |
| 128 | |
| 129 | return 0; |
| 130 | } |
| 131 | |
| 132 | static int gp8psk_fe_get_frontend(struct dvb_frontend* fe, |
| 133 | struct dvb_frontend_parameters *fep) |
| 134 | { |
| 135 | return 0; |
| 136 | } |
| 137 | |
| 138 | |
| 139 | static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe, |
| 140 | struct dvb_diseqc_master_cmd *m) |
| 141 | { |
| 142 | struct gp8psk_fe_state *st = fe->demodulator_priv; |
| 143 | |
| 144 | deb_fe("%s\n",__FUNCTION__); |
| 145 | |
| 146 | if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, m->msg[0], 0, |
| 147 | m->msg, m->msg_len)) { |
| 148 | return -EINVAL; |
| 149 | } |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | static int gp8psk_fe_send_diseqc_burst (struct dvb_frontend* fe, |
| 154 | fe_sec_mini_cmd_t burst) |
| 155 | { |
| 156 | struct gp8psk_fe_state *st = fe->demodulator_priv; |
| 157 | u8 cmd; |
| 158 | |
| 159 | deb_fe("%s\n",__FUNCTION__); |
| 160 | |
| 161 | /* These commands are certainly wrong */ |
| 162 | cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01; |
| 163 | |
| 164 | if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, cmd, 0, |
| 165 | &cmd, 0)) { |
| 166 | return -EINVAL; |
| 167 | } |
| 168 | return 0; |
| 169 | } |
| 170 | |
| 171 | static int gp8psk_fe_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone) |
| 172 | { |
| 173 | struct gp8psk_fe_state* state = fe->demodulator_priv; |
| 174 | |
| 175 | if (gp8psk_usb_out_op(state->d,SET_22KHZ_TONE, |
| 176 | (tone == SEC_TONE_ON), 0, NULL, 0)) { |
| 177 | return -EINVAL; |
| 178 | } |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage) |
| 183 | { |
| 184 | struct gp8psk_fe_state* state = fe->demodulator_priv; |
| 185 | |
| 186 | if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, |
| 187 | voltage == SEC_VOLTAGE_18, 0, NULL, 0)) { |
| 188 | return -EINVAL; |
| 189 | } |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd) |
| 194 | { |
| 195 | struct gp8psk_fe_state* state = fe->demodulator_priv; |
| 196 | u8 cmd = sw_cmd & 0x7f; |
| 197 | |
| 198 | if (gp8psk_usb_out_op(state->d,SET_DN_SWITCH, cmd, 0, |
| 199 | NULL, 0)) { |
| 200 | return -EINVAL; |
| 201 | } |
| 202 | if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, !!(sw_cmd & 0x80), |
| 203 | 0, NULL, 0)) { |
| 204 | return -EINVAL; |
| 205 | } |
| 206 | |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | static void gp8psk_fe_release(struct dvb_frontend* fe) |
| 211 | { |
| 212 | struct gp8psk_fe_state *state = fe->demodulator_priv; |
| 213 | kfree(state); |
| 214 | } |
| 215 | |
| 216 | static struct dvb_frontend_ops gp8psk_fe_ops; |
| 217 | |
| 218 | struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d) |
| 219 | { |
| 220 | struct gp8psk_fe_state *s = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL); |
| 221 | if (s == NULL) |
| 222 | goto error; |
| 223 | |
| 224 | s->d = d; |
| 225 | memcpy(&s->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops)); |
| 226 | s->fe.demodulator_priv = s; |
| 227 | |
| 228 | goto success; |
| 229 | error: |
| 230 | return NULL; |
| 231 | success: |
| 232 | return &s->fe; |
| 233 | } |
| 234 | |
| 235 | |
| 236 | static struct dvb_frontend_ops gp8psk_fe_ops = { |
| 237 | .info = { |
| 238 | .name = "Genpix 8psk-USB DVB-S", |
| 239 | .type = FE_QPSK, |
| 240 | .frequency_min = 950000, |
| 241 | .frequency_max = 2150000, |
| 242 | .frequency_stepsize = 100, |
| 243 | .symbol_rate_min = 1000000, |
| 244 | .symbol_rate_max = 45000000, |
| 245 | .symbol_rate_tolerance = 500, /* ppm */ |
| 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 = gp8psk_fe_release, |
| 253 | |
| 254 | .init = NULL, |
| 255 | .sleep = NULL, |
| 256 | |
| 257 | .set_frontend = gp8psk_fe_set_frontend, |
| 258 | .get_frontend = gp8psk_fe_get_frontend, |
| 259 | .get_tune_settings = gp8psk_fe_get_tune_settings, |
| 260 | |
| 261 | .read_status = gp8psk_fe_read_status, |
| 262 | .read_ber = gp8psk_fe_read_ber, |
| 263 | .read_signal_strength = gp8psk_fe_read_signal_strength, |
| 264 | .read_snr = gp8psk_fe_read_snr, |
| 265 | .read_ucblocks = gp8psk_fe_read_unc_blocks, |
| 266 | |
| 267 | .diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg, |
| 268 | .diseqc_send_burst = gp8psk_fe_send_diseqc_burst, |
| 269 | .set_tone = gp8psk_fe_set_tone, |
| 270 | .set_voltage = gp8psk_fe_set_voltage, |
| 271 | .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd, |
| 272 | }; |