drivers/media/usb/dvb-usb/vp702x-fe.c - kernel/bruno - Git at Google

 /* 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;

 	struct dvb_frontend_ops ops;

 	enum fe_sec_voltage voltage;
 	enum fe_sec_tone_mode 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)
 {
 	struct vp702x_device_state *dst = st->d->priv;
 	u8 *buf;

 	if (time_after(jiffies, st->next_status_check)) {
 		mutex_lock(&dst->buf_mutex);
 		buf = dst->buf;

 		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, buf, 1);
 		st->snr = buf[0];

 		vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x15, 0, buf, 1);
 		st->sig = buf[0];

 		mutex_unlock(&dst->buf_mutex);
 		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,
 				 enum fe_status *status)
 {
 	struct vp702x_fe_state *st = fe->demodulator_priv;
 	vp702x_fe_refresh_state(st);
 	deb_fe("%s\n",__func__);

 	if (st->lock == 0)
 		*status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
 	else
 		*status = 0;

 	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",__func__);
 	tune->min_delay_ms = 2000;
 	return 0;
 }

 static int vp702x_fe_set_frontend(struct dvb_frontend *fe)
 {
 	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
 	struct vp702x_fe_state *st = fe->demodulator_priv;
 	struct vp702x_device_state *dst = st->d->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;

 	mutex_lock(&dst->buf_mutex);

 	cmd = dst->buf;
 	memset(cmd, 0, 10);

 	cmd[0] = (freq >> 8) & 0x7f;
 	cmd[1] =  freq       & 0xff;
 	cmd[2] = 1; /* divrate == 4 -> frequencyRef[1] -> 1 here */

 	sr = (u64) (fep->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->symbol_rate,
 			(unsigned long) sr, (unsigned long) sr);

 /*	if (fep->inversion == INVERSION_ON)
 		cmd[6] |= 0x80; */

 	if (st->voltage == SEC_VOLTAGE_18)
 		cmd[6] |= 0x40;

 /*	if (fep->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_inout_op(st->d, cmd, 8, cmd, 10, 100);

 	if (cmd[2] == 0 && cmd[3] == 0)
 		deb_fe("tuning failed.\n");
 	else
 		deb_fe("tuning succeeded.\n");

 	mutex_unlock(&dst->buf_mutex);

 	return 0;
 }

 static int vp702x_fe_init(struct dvb_frontend *fe)
 {
 	struct vp702x_fe_state *st = fe->demodulator_priv;
 	deb_fe("%s\n",__func__);
 	vp702x_usb_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0);
 	return 0;
 }

 static int vp702x_fe_sleep(struct dvb_frontend *fe)
 {
 	deb_fe("%s\n",__func__);
 	return 0;
 }

 static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe,
 				    struct dvb_diseqc_master_cmd *m)
 {
 	u8 *cmd;
 	struct vp702x_fe_state *st = fe->demodulator_priv;
 	struct vp702x_device_state *dst = st->d->priv;

 	deb_fe("%s\n",__func__);

 	if (m->msg_len > 4)
 		return -EINVAL;

 	mutex_lock(&dst->buf_mutex);

 	cmd = dst->buf;
 	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, cmd, 10, 100);

 	if (cmd[2] == 0 && cmd[3] == 0)
 		deb_fe("diseqc cmd failed.\n");
 	else
 		deb_fe("diseqc cmd succeeded.\n");

 	mutex_unlock(&dst->buf_mutex);

 	return 0;
 }

 static int vp702x_fe_send_diseqc_burst(struct dvb_frontend *fe,
 				       enum fe_sec_mini_cmd burst)
 {
 	deb_fe("%s\n",__func__);
 	return 0;
 }

 static int vp702x_fe_set_tone(struct dvb_frontend *fe,
 			      enum fe_sec_tone_mode tone)
 {
 	struct vp702x_fe_state *st = fe->demodulator_priv;
 	struct vp702x_device_state *dst = st->d->priv;
 	u8 *buf;

 	deb_fe("%s\n",__func__);

 	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);

 	mutex_lock(&dst->buf_mutex);

 	buf = dst->buf;
 	memcpy(buf, st->lnb_buf, 8);

 	vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
 	if (buf[2] == 0 && buf[3] == 0)
 		deb_fe("set_tone cmd failed.\n");
 	else
 		deb_fe("set_tone cmd succeeded.\n");

 	mutex_unlock(&dst->buf_mutex);

 	return 0;
 }

 static int vp702x_fe_set_voltage(struct dvb_frontend *fe,
 				 enum fe_sec_voltage voltage)
 {
 	struct vp702x_fe_state *st = fe->demodulator_priv;
 	struct vp702x_device_state *dst = st->d->priv;
 	u8 *buf;
 	deb_fe("%s\n",__func__);

 	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);

 	mutex_lock(&dst->buf_mutex);

 	buf = dst->buf;
 	memcpy(buf, st->lnb_buf, 8);

 	vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
 	if (buf[2] == 0 && buf[3] == 0)
 		deb_fe("set_voltage cmd failed.\n");
 	else
 		deb_fe("set_voltage cmd succeeded.\n");

 	mutex_unlock(&dst->buf_mutex);
 	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 = kzalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL);
 	if (s == NULL)
 		goto error;

 	s->d = d;

 	memcpy(&s->fe.ops,&vp702x_fe_ops,sizeof(struct dvb_frontend_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 */

 	return &s->fe;
 error:
 	return NULL;
 }


 static struct dvb_frontend_ops vp702x_fe_ops = {
 	.delsys = { SYS_DVBS },
 	.info = {
 		.name           = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S",
 		.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  = vp702x_fe_init,
 	.sleep = vp702x_fe_sleep,

 	.set_frontend = vp702x_fe_set_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,
 };
	/* 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;

	struct dvb_frontend_ops ops;

	enum fe_sec_voltage voltage;
	enum fe_sec_tone_mode 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)
	{
	struct vp702x_device_state *dst = st->d->priv;
	u8 *buf;

	if (time_after(jiffies, st->next_status_check)) {
	mutex_lock(&dst->buf_mutex);
	buf = dst->buf;

	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, buf, 1);
	st->snr = buf[0];

	vp702x_usb_in_op(st->d, READ_TUNER_REG_REQ, 0x15, 0, buf, 1);
	st->sig = buf[0];

	mutex_unlock(&dst->buf_mutex);
	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,
	enum fe_status *status)
	{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	vp702x_fe_refresh_state(st);
	deb_fe("%s\n",__func__);

	if (st->lock == 0)
	*status = FE_HAS_LOCK \| FE_HAS_SYNC \| FE_HAS_VITERBI \| FE_HAS_SIGNAL \| FE_HAS_CARRIER;
	else
	*status = 0;

	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",__func__);
	tune->min_delay_ms = 2000;
	return 0;
	}

	static int vp702x_fe_set_frontend(struct dvb_frontend *fe)
	{
	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
	struct vp702x_fe_state *st = fe->demodulator_priv;
	struct vp702x_device_state *dst = st->d->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;

	mutex_lock(&dst->buf_mutex);

	cmd = dst->buf;
	memset(cmd, 0, 10);

	cmd[0] = (freq >> 8) & 0x7f;
	cmd[1] = freq & 0xff;
	cmd[2] = 1; /* divrate == 4 -> frequencyRef[1] -> 1 here */

	sr = (u64) (fep->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->symbol_rate,
	(unsigned long) sr, (unsigned long) sr);

	/* if (fep->inversion == INVERSION_ON)
	cmd[6] \|= 0x80; */

	if (st->voltage == SEC_VOLTAGE_18)
	cmd[6] \|= 0x40;

	/* if (fep->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_inout_op(st->d, cmd, 8, cmd, 10, 100);

	if (cmd[2] == 0 && cmd[3] == 0)
	deb_fe("tuning failed.\n");
	else
	deb_fe("tuning succeeded.\n");

	mutex_unlock(&dst->buf_mutex);

	return 0;
	}

	static int vp702x_fe_init(struct dvb_frontend *fe)
	{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	deb_fe("%s\n",__func__);
	vp702x_usb_in_op(st->d, RESET_TUNER, 0, 0, NULL, 0);
	return 0;
	}

	static int vp702x_fe_sleep(struct dvb_frontend *fe)
	{
	deb_fe("%s\n",__func__);
	return 0;
	}

	static int vp702x_fe_send_diseqc_msg (struct dvb_frontend* fe,
	struct dvb_diseqc_master_cmd *m)
	{
	u8 *cmd;
	struct vp702x_fe_state *st = fe->demodulator_priv;
	struct vp702x_device_state *dst = st->d->priv;

	deb_fe("%s\n",__func__);

	if (m->msg_len > 4)
	return -EINVAL;

	mutex_lock(&dst->buf_mutex);

	cmd = dst->buf;
	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, cmd, 10, 100);

	if (cmd[2] == 0 && cmd[3] == 0)
	deb_fe("diseqc cmd failed.\n");
	else
	deb_fe("diseqc cmd succeeded.\n");

	mutex_unlock(&dst->buf_mutex);

	return 0;
	}

	static int vp702x_fe_send_diseqc_burst(struct dvb_frontend *fe,
	enum fe_sec_mini_cmd burst)
	{
	deb_fe("%s\n",__func__);
	return 0;
	}

	static int vp702x_fe_set_tone(struct dvb_frontend *fe,
	enum fe_sec_tone_mode tone)
	{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	struct vp702x_device_state *dst = st->d->priv;
	u8 *buf;

	deb_fe("%s\n",__func__);

	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);

	mutex_lock(&dst->buf_mutex);

	buf = dst->buf;
	memcpy(buf, st->lnb_buf, 8);

	vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
	if (buf[2] == 0 && buf[3] == 0)
	deb_fe("set_tone cmd failed.\n");
	else
	deb_fe("set_tone cmd succeeded.\n");

	mutex_unlock(&dst->buf_mutex);

	return 0;
	}

	static int vp702x_fe_set_voltage(struct dvb_frontend *fe,
	enum fe_sec_voltage voltage)
	{
	struct vp702x_fe_state *st = fe->demodulator_priv;
	struct vp702x_device_state *dst = st->d->priv;
	u8 *buf;
	deb_fe("%s\n",__func__);

	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);

	mutex_lock(&dst->buf_mutex);

	buf = dst->buf;
	memcpy(buf, st->lnb_buf, 8);

	vp702x_usb_inout_op(st->d, buf, 8, buf, 10, 100);
	if (buf[2] == 0 && buf[3] == 0)
	deb_fe("set_voltage cmd failed.\n");
	else
	deb_fe("set_voltage cmd succeeded.\n");

	mutex_unlock(&dst->buf_mutex);
	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 = kzalloc(sizeof(struct vp702x_fe_state), GFP_KERNEL);
	if (s == NULL)
	goto error;

	s->d = d;

	memcpy(&s->fe.ops,&vp702x_fe_ops,sizeof(struct dvb_frontend_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 */

	return &s->fe;
	error:
	return NULL;
	}


	static struct dvb_frontend_ops vp702x_fe_ops = {
	.delsys = { SYS_DVBS },
	.info = {
	.name = "Twinhan DST-like frontend (VP7021/VP7020) DVB-S",
	.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 = vp702x_fe_init,
	.sleep = vp702x_fe_sleep,

	.set_frontend = vp702x_fe_set_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,
	};