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377 lines
8.6 KiB
377 lines
8.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* DVB frontend part of the Linux driver for the TwinhanDTV StarBox USB2.0 |
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* DVB-S receiver. |
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* |
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* Copyright (C) 2005 Ralph Metzler <[email protected]> |
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* Metzler Brothers Systementwicklung GbR |
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* |
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* Copyright (C) 2005 Patrick Boettcher <[email protected]> |
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* |
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* Thanks to Twinhan who kindly provided hardware and information. |
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* |
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* This file can be removed soon, after the DST-driver is rewritten to provice |
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* the frontend-controlling separately. |
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* |
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* see Documentation/driver-api/media/drivers/dvb-usb.rst for more information |
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*/ |
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#include "vp702x.h" |
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struct vp702x_fe_state { |
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struct dvb_frontend fe; |
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struct dvb_usb_device *d; |
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struct dvb_frontend_ops ops; |
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enum fe_sec_voltage voltage; |
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enum fe_sec_tone_mode tone_mode; |
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u8 lnb_buf[8]; |
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u8 lock; |
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u8 sig; |
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u8 snr; |
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unsigned long next_status_check; |
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unsigned long status_check_interval; |
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}; |
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static int vp702x_fe_refresh_state(struct vp702x_fe_state *st) |
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{ |
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struct vp702x_device_state *dst = st->d->priv; |
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u8 *buf; |
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if (time_after(jiffies, st->next_status_check)) { |
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mutex_lock(&dst->buf_mutex); |
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buf = dst->buf; |
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vp702x_usb_in_op(st->d, READ_STATUS, 0, 0, buf, 10); |
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st->lock = buf[4]; |
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vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x11, 0, buf, 1); |
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st->snr = buf[0]; |
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vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x15, 0, buf, 1); |
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st->sig = buf[0]; |
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mutex_unlock(&dst->buf_mutex); |
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st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000; |
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} |
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return 0; |
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} |
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static u8 vp702x_chksum(u8 *buf,int f, int count) |
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{ |
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u8 s = 0; |
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int i; |
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for (i = f; i < f+count; i++) |
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s += buf[i]; |
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return ~s+1; |
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} |
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static int vp702x_fe_read_status(struct dvb_frontend *fe, |
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enum fe_status *status) |
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{ |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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vp702x_fe_refresh_state(st); |
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deb_fe("%s\n",__func__); |
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if (st->lock == 0) |
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*status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER; |
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else |
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*status = 0; |
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if (*status & FE_HAS_LOCK) |
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st->status_check_interval = 1000; |
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else |
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st->status_check_interval = 250; |
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return 0; |
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} |
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/* not supported by this Frontend */ |
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static int vp702x_fe_read_ber(struct dvb_frontend* fe, u32 *ber) |
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{ |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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vp702x_fe_refresh_state(st); |
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*ber = 0; |
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return 0; |
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} |
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/* not supported by this Frontend */ |
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static int vp702x_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc) |
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{ |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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vp702x_fe_refresh_state(st); |
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*unc = 0; |
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return 0; |
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} |
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static int vp702x_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength) |
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{ |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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vp702x_fe_refresh_state(st); |
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*strength = (st->sig << 8) | st->sig; |
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return 0; |
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} |
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static int vp702x_fe_read_snr(struct dvb_frontend* fe, u16 *snr) |
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{ |
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u8 _snr; |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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vp702x_fe_refresh_state(st); |
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_snr = (st->snr & 0x1f) * 0xff / 0x1f; |
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*snr = (_snr << 8) | _snr; |
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return 0; |
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} |
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static int vp702x_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) |
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{ |
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deb_fe("%s\n",__func__); |
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tune->min_delay_ms = 2000; |
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return 0; |
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} |
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static int vp702x_fe_set_frontend(struct dvb_frontend *fe) |
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{ |
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struct dtv_frontend_properties *fep = &fe->dtv_property_cache; |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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struct vp702x_device_state *dst = st->d->priv; |
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u32 freq = fep->frequency/1000; |
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/*CalFrequency*/ |
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/* u16 frequencyRef[16] = { 2, 4, 8, 16, 32, 64, 128, 256, 24, 5, 10, 20, 40, 80, 160, 320 }; */ |
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u64 sr; |
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u8 *cmd; |
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mutex_lock(&dst->buf_mutex); |
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cmd = dst->buf; |
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memset(cmd, 0, 10); |
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cmd[0] = (freq >> 8) & 0x7f; |
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cmd[1] = freq & 0xff; |
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cmd[2] = 1; /* divrate == 4 -> frequencyRef[1] -> 1 here */ |
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sr = (u64) (fep->symbol_rate/1000) << 20; |
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do_div(sr,88000); |
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cmd[3] = (sr >> 12) & 0xff; |
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cmd[4] = (sr >> 4) & 0xff; |
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cmd[5] = (sr << 4) & 0xf0; |
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deb_fe("setting frontend to: %u -> %u (%x) LNB-based GHz, symbolrate: %d -> %lu (%lx)\n", |
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fep->frequency, freq, freq, fep->symbol_rate, |
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(unsigned long) sr, (unsigned long) sr); |
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/* if (fep->inversion == INVERSION_ON) |
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cmd[6] |= 0x80; */ |
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if (st->voltage == SEC_VOLTAGE_18) |
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cmd[6] |= 0x40; |
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/* if (fep->symbol_rate > 8000000) |
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cmd[6] |= 0x20; |
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if (fep->frequency < 1531000) |
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cmd[6] |= 0x04; |
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if (st->tone_mode == SEC_TONE_ON) |
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cmd[6] |= 0x01;*/ |
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cmd[7] = vp702x_chksum(cmd,0,7); |
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st->status_check_interval = 250; |
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st->next_status_check = jiffies; |
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vp702x_usb_inout_op(st->d, cmd, 8, cmd, 10, 100); |
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if (cmd[2] == 0 && cmd[3] == 0) |
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deb_fe("tuning failed.\n"); |
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else |
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deb_fe("tuning succeeded.\n"); |
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mutex_unlock(&dst->buf_mutex); |
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return 0; |
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} |
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static int vp702x_fe_init(struct dvb_frontend *fe) |
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{ |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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deb_fe("%s\n",__func__); |
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vp702x_usb_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0); |
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return 0; |
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} |
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static int vp702x_fe_sleep(struct dvb_frontend *fe) |
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{ |
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deb_fe("%s\n",__func__); |
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return 0; |
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} |
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static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe, |
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struct dvb_diseqc_master_cmd *m) |
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{ |
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u8 *cmd; |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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struct vp702x_device_state *dst = st->d->priv; |
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deb_fe("%s\n",__func__); |
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if (m->msg_len > 4) |
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return -EINVAL; |
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mutex_lock(&dst->buf_mutex); |
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cmd = dst->buf; |
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cmd[1] = SET_DISEQC_CMD; |
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cmd[2] = m->msg_len; |
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memcpy(&cmd[3], m->msg, m->msg_len); |
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cmd[7] = vp702x_chksum(cmd, 0, 7); |
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vp702x_usb_inout_op(st->d, cmd, 8, cmd, 10, 100); |
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if (cmd[2] == 0 && cmd[3] == 0) |
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deb_fe("diseqc cmd failed.\n"); |
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else |
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deb_fe("diseqc cmd succeeded.\n"); |
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mutex_unlock(&dst->buf_mutex); |
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return 0; |
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} |
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static int vp702x_fe_send_diseqc_burst(struct dvb_frontend *fe, |
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enum fe_sec_mini_cmd burst) |
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{ |
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deb_fe("%s\n",__func__); |
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return 0; |
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} |
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static int vp702x_fe_set_tone(struct dvb_frontend *fe, |
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enum fe_sec_tone_mode tone) |
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{ |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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struct vp702x_device_state *dst = st->d->priv; |
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u8 *buf; |
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deb_fe("%s\n",__func__); |
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st->tone_mode = tone; |
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if (tone == SEC_TONE_ON) |
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st->lnb_buf[2] = 0x02; |
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else |
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st->lnb_buf[2] = 0x00; |
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st->lnb_buf[7] = vp702x_chksum(st->lnb_buf, 0, 7); |
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mutex_lock(&dst->buf_mutex); |
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buf = dst->buf; |
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memcpy(buf, st->lnb_buf, 8); |
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vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100); |
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if (buf[2] == 0 && buf[3] == 0) |
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deb_fe("set_tone cmd failed.\n"); |
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else |
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deb_fe("set_tone cmd succeeded.\n"); |
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mutex_unlock(&dst->buf_mutex); |
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return 0; |
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} |
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static int vp702x_fe_set_voltage(struct dvb_frontend *fe, |
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enum fe_sec_voltage voltage) |
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{ |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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struct vp702x_device_state *dst = st->d->priv; |
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u8 *buf; |
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deb_fe("%s\n",__func__); |
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st->voltage = voltage; |
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if (voltage != SEC_VOLTAGE_OFF) |
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st->lnb_buf[4] = 0x01; |
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else |
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st->lnb_buf[4] = 0x00; |
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st->lnb_buf[7] = vp702x_chksum(st->lnb_buf, 0, 7); |
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mutex_lock(&dst->buf_mutex); |
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buf = dst->buf; |
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memcpy(buf, st->lnb_buf, 8); |
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vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100); |
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if (buf[2] == 0 && buf[3] == 0) |
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deb_fe("set_voltage cmd failed.\n"); |
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else |
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deb_fe("set_voltage cmd succeeded.\n"); |
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mutex_unlock(&dst->buf_mutex); |
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return 0; |
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} |
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static void vp702x_fe_release(struct dvb_frontend* fe) |
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{ |
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struct vp702x_fe_state *st = fe->demodulator_priv; |
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kfree(st); |
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} |
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static const struct dvb_frontend_ops vp702x_fe_ops; |
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struct dvb_frontend * vp702x_fe_attach(struct dvb_usb_device *d) |
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{ |
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struct vp702x_fe_state *s = kzalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL); |
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if (s == NULL) |
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goto error; |
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s->d = d; |
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memcpy(&s->fe.ops,&vp702x_fe_ops,sizeof(struct dvb_frontend_ops)); |
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s->fe.demodulator_priv = s; |
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s->lnb_buf[1] = SET_LNB_POWER; |
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s->lnb_buf[3] = 0xff; /* 0=tone burst, 2=data burst, ff=off */ |
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return &s->fe; |
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error: |
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return NULL; |
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} |
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static const struct dvb_frontend_ops vp702x_fe_ops = { |
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.delsys = { SYS_DVBS }, |
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.info = { |
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.name = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S", |
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.frequency_min_hz = 950 * MHz, |
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.frequency_max_hz = 2150 * MHz, |
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.frequency_stepsize_hz = 1 * MHz, |
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.symbol_rate_min = 1000000, |
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.symbol_rate_max = 45000000, |
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.symbol_rate_tolerance = 500, /* ppm */ |
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.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | |
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FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | |
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FE_CAN_QPSK | |
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FE_CAN_FEC_AUTO |
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}, |
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.release = vp702x_fe_release, |
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.init = vp702x_fe_init, |
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.sleep = vp702x_fe_sleep, |
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.set_frontend = vp702x_fe_set_frontend, |
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.get_tune_settings = vp702x_fe_get_tune_settings, |
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.read_status = vp702x_fe_read_status, |
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.read_ber = vp702x_fe_read_ber, |
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.read_signal_strength = vp702x_fe_read_signal_strength, |
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.read_snr = vp702x_fe_read_snr, |
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.read_ucblocks = vp702x_fe_read_unc_blocks, |
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.diseqc_send_master_cmd = vp702x_fe_send_diseqc_msg, |
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.diseqc_send_burst = vp702x_fe_send_diseqc_burst, |
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.set_tone = vp702x_fe_set_tone, |
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.set_voltage = vp702x_fe_set_voltage, |
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};
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