/* DVB frontend part of the Linux driver for the TwinhanDTV StarBox USB2.0 * DVB-S receiver. * * Copyright (C) 2005 Ralph Metzler <rjkm@metzlerbros.de> * Metzler Brothers Systementwicklung GbR * * Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de> * * Thanks to Twinhan who kindly provided hardware and information. * * This file can be removed soon, after the DST-driver is rewritten to provice * the frontend-controlling separately. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation, version 2. * * see Documentation/dvb/README.dvb-usb for more information * */ #include "vp702x.h" struct vp702x_fe_state { struct dvb_frontend fe; struct dvb_usb_device *d; fe_sec_voltage_t voltage; fe_sec_tone_mode_t tone_mode; u8 lnb_buf[8]; u8 lock; u8 sig; u8 snr; unsigned long next_status_check; unsigned long status_check_interval; }; static int vp702x_fe_refresh_state(struct vp702x_fe_state *st) { u8 buf[10]; if (time_after(jiffies,st->next_status_check)) { vp702x_usb_in_op(st->d,READ_STATUS,0,0,buf,10); st->lock = buf[4]; vp702x_usb_in_op(st->d,READ_TUNER_REG_REQ,0x11,0,&st->snr,1); vp702x_usb_in_op(st->d,READ_TUNER_REG_REQ,0x15,0,&st->sig,1); st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000; } return 0; } static u8 vp702x_chksum(u8 *buf,int f, int count) { u8 s = 0; int i; for (i = f; i < f+count; i++) s += buf[i]; return ~s+1; } static int vp702x_fe_read_status(struct dvb_frontend* fe, fe_status_t *status) { struct vp702x_fe_state *st = fe->demodulator_priv; vp702x_fe_refresh_state(st); deb_fe("%s\n",__FUNCTION__); if (st->lock == 0) *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER; else *status = 0; deb_fe("real state: %x\n",*status); *status = 0x1f; if (*status & FE_HAS_LOCK) st->status_check_interval = 1000; else st->status_check_interval = 250; return 0; } /* not supported by this Frontend */ static int vp702x_fe_read_ber(struct dvb_frontend* fe, u32 *ber) { struct vp702x_fe_state *st = fe->demodulator_priv; vp702x_fe_refresh_state(st); *ber = 0; return 0; } /* not supported by this Frontend */ static int vp702x_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc) { struct vp702x_fe_state *st = fe->demodulator_priv; vp702x_fe_refresh_state(st); *unc = 0; return 0; } static int vp702x_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength) { struct vp702x_fe_state *st = fe->demodulator_priv; vp702x_fe_refresh_state(st); *strength = (st->sig << 8) | st->sig; return 0; } static int vp702x_fe_read_snr(struct dvb_frontend* fe, u16 *snr) { u8 _snr; struct vp702x_fe_state *st = fe->demodulator_priv; vp702x_fe_refresh_state(st); _snr = (st->snr & 0x1f) * 0xff / 0x1f; *snr = (_snr << 8) | _snr; return 0; } static int vp702x_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) { deb_fe("%s\n",__FUNCTION__); tune->min_delay_ms = 2000; return 0; } static int vp702x_fe_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep) { struct vp702x_fe_state *st = fe->demodulator_priv; u32 freq = fep->frequency/1000; /*CalFrequency*/ /* u16 frequencyRef[16] = { 2, 4, 8, 16, 32, 64, 128, 256, 24, 5, 10, 20, 40, 80, 160, 320 }; */ u64 sr; u8 cmd[8] = { 0 },ibuf[10]; cmd[0] = (freq >> 8) & 0x7f; cmd[1] = freq & 0xff; cmd[2] = 1; /* divrate == 4 -> frequencyRef[1] -> 1 here */ sr = (u64) (fep->u.qpsk.symbol_rate/1000) << 20; do_div(sr,88000); cmd[3] = (sr >> 12) & 0xff; cmd[4] = (sr >> 4) & 0xff; cmd[5] = (sr << 4) & 0xf0; deb_fe("setting frontend to: %u -> %u (%x) LNB-based GHz, symbolrate: %d -> %Lu (%Lx)\n", fep->frequency,freq,freq, fep->u.qpsk.symbol_rate, sr, sr); /* if (fep->inversion == INVERSION_ON) cmd[6] |= 0x80; */ if (st->voltage == SEC_VOLTAGE_18) cmd[6] |= 0x40; /* if (fep->u.qpsk.symbol_rate > 8000000) cmd[6] |= 0x20; if (fep->frequency < 1531000) cmd[6] |= 0x04; if (st->tone_mode == SEC_TONE_ON) cmd[6] |= 0x01;*/ cmd[7] = vp702x_chksum(cmd,0,7); st->status_check_interval = 250; st->next_status_check = jiffies; vp702x_usb_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0); msleep(30); vp702x_usb_inout_op(st->d,cmd,8,ibuf,10,100); if (ibuf[2] == 0 && ibuf[3] == 0) deb_fe("tuning failed.\n"); else deb_fe("tuning succeeded.\n"); return 0; } static int vp702x_fe_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep) { deb_fe("%s\n",__FUNCTION__); return 0; } static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *m) { struct vp702x_fe_state *st = fe->demodulator_priv; u8 cmd[8],ibuf[10]; memset(cmd,0,8); deb_fe("%s\n",__FUNCTION__); if (m->msg_len > 4) return -EINVAL; cmd[1] = SET_DISEQC_CMD; cmd[2] = m->msg_len; memcpy(&cmd[3], m->msg, m->msg_len); cmd[7] = vp702x_chksum(cmd,0,7); vp702x_usb_inout_op(st->d,cmd,8,ibuf,10,100); if (ibuf[2] == 0 && ibuf[3] == 0) deb_fe("diseqc cmd failed.\n"); else deb_fe("diseqc cmd succeeded.\n"); return 0; } static int vp702x_fe_send_diseqc_burst (struct dvb_frontend* fe, fe_sec_mini_cmd_t burst) { deb_fe("%s\n",__FUNCTION__); return 0; } static int vp702x_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone) { struct vp702x_fe_state *st = fe->demodulator_priv; u8 ibuf[10]; deb_fe("%s\n",__FUNCTION__); st->tone_mode = tone; if (tone == SEC_TONE_ON) st->lnb_buf[2] = 0x02; else st->lnb_buf[2] = 0x00; st->lnb_buf[7] = vp702x_chksum(st->lnb_buf,0,7); vp702x_usb_inout_op(st->d,st->lnb_buf,8,ibuf,10,100); if (ibuf[2] == 0 && ibuf[3] == 0) deb_fe("set_tone cmd failed.\n"); else deb_fe("set_tone cmd succeeded.\n"); return 0; } static int vp702x_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage) { struct vp702x_fe_state *st = fe->demodulator_priv; u8 ibuf[10]; deb_fe("%s\n",__FUNCTION__); st->voltage = voltage; if (voltage != SEC_VOLTAGE_OFF) st->lnb_buf[4] = 0x01; else st->lnb_buf[4] = 0x00; st->lnb_buf[7] = vp702x_chksum(st->lnb_buf,0,7); vp702x_usb_inout_op(st->d,st->lnb_buf,8,ibuf,10,100); if (ibuf[2] == 0 && ibuf[3] == 0) deb_fe("set_voltage cmd failed.\n"); else deb_fe("set_voltage cmd succeeded.\n"); return 0; } static void vp702x_fe_release(struct dvb_frontend* fe) { struct vp702x_fe_state *st = fe->demodulator_priv; kfree(st); } static struct dvb_frontend_ops vp702x_fe_ops; struct dvb_frontend * vp702x_fe_attach(struct dvb_usb_device *d) { struct vp702x_fe_state *s = kmalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL); if (s == NULL) goto error; memset(s,0,sizeof(struct vp702x_fe_state)); s->d = d; s->fe.ops = &vp702x_fe_ops; s->fe.demodulator_priv = s; s->lnb_buf[1] = SET_LNB_POWER; s->lnb_buf[3] = 0xff; /* 0=tone burst, 2=data burst, ff=off */ goto success; error: return NULL; success: return &s->fe; } static struct dvb_frontend_ops vp702x_fe_ops = { .info = { .name = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S", .type = FE_QPSK, .frequency_min = 950000, .frequency_max = 2150000, .frequency_stepsize = 1000, /* kHz for QPSK frontends */ .frequency_tolerance = 0, .symbol_rate_min = 1000000, .symbol_rate_max = 45000000, .symbol_rate_tolerance = 500, /* ppm */ .caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_QPSK | FE_CAN_FEC_AUTO }, .release = vp702x_fe_release, .init = NULL, .sleep = NULL, .set_frontend = vp702x_fe_set_frontend, .get_frontend = vp702x_fe_get_frontend, .get_tune_settings = vp702x_fe_get_tune_settings, .read_status = vp702x_fe_read_status, .read_ber = vp702x_fe_read_ber, .read_signal_strength = vp702x_fe_read_signal_strength, .read_snr = vp702x_fe_read_snr, .read_ucblocks = vp702x_fe_read_unc_blocks, .diseqc_send_master_cmd = vp702x_fe_send_diseqc_msg, .diseqc_send_burst = vp702x_fe_send_diseqc_burst, .set_tone = vp702x_fe_set_tone, .set_voltage = vp702x_fe_set_voltage, };