drivers/media/dvb-frontends/gp8psk-fe.c - kernel/msm-4.9 - Gitiles

 /*
  * Frontend driver for the GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
  *
  * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
  * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
  *
  * Thanks to GENPIX for the sample code used to implement this module.
  *
  * This module is based off the vp7045 and vp702x modules
  *
  * 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.
  */

 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

 #include "gp8psk-fe.h"
 #include "dvb_frontend.h"

 static int debug;
 module_param(debug, int, 0644);
 MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");

 #define dprintk(fmt, arg...) do {					\
 	if (debug)							\
 		printk(KERN_DEBUG pr_fmt("%s: " fmt),			\
 		       __func__, ##arg);				\
 } while (0)

 struct gp8psk_fe_state {
 	struct dvb_frontend fe;
 	void *priv;
 	const struct gp8psk_fe_ops *ops;
 	bool is_rev1;
 	u8 lock;
 	u16 snr;
 	unsigned long next_status_check;
 	unsigned long status_check_interval;
 };

 static int gp8psk_tuned_to_DCII(struct dvb_frontend *fe)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;
 	u8 status;

 	st->ops->in(st->priv, GET_8PSK_CONFIG, 0, 0, &status, 1);
 	return status & bmDCtuned;
 }

 static int gp8psk_set_tuner_mode(struct dvb_frontend *fe, int mode)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;

 	return st->ops->out(st->priv, SET_8PSK_CONFIG, mode, 0, NULL, 0);
 }

 static int gp8psk_fe_update_status(struct gp8psk_fe_state *st)
 {
 	u8 buf[6];
 	if (time_after(jiffies,st->next_status_check)) {
 		st->ops->in(st->priv, GET_SIGNAL_LOCK, 0, 0, &st->lock, 1);
 		st->ops->in(st->priv, GET_SIGNAL_STRENGTH, 0, 0, buf, 6);
 		st->snr = (buf[1]) << 8 | buf[0];
 		st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
 	}
 	return 0;
 }

 static int gp8psk_fe_read_status(struct dvb_frontend *fe,
 				 enum fe_status *status)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;
 	gp8psk_fe_update_status(st);

 	if (st->lock)
 		*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 = 100;
 	return 0;
 }

 /* not supported by this Frontend */
 static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
 {
 	(void) fe;
 	*ber = 0;
 	return 0;
 }

 /* not supported by this Frontend */
 static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
 {
 	(void) fe;
 	*unc = 0;
 	return 0;
 }

 static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;
 	gp8psk_fe_update_status(st);
 	/* snr is reported in dBu*256 */
 	*snr = st->snr;
 	return 0;
 }

 static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;
 	gp8psk_fe_update_status(st);
 	/* snr is reported in dBu*256 */
 	/* snr / 38.4 ~= 100% strength */
 	/* snr * 17 returns 100% strength as 65535 */
 	if (st->snr > 0xf00)
 		*strength = 0xffff;
 	else
 		*strength = (st->snr << 4) + st->snr; /* snr*17 */
 	return 0;
 }

 static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
 {
 	tune->min_delay_ms = 800;
 	return 0;
 }

 static int gp8psk_fe_set_frontend(struct dvb_frontend *fe)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;
 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 	u8 cmd[10];
 	u32 freq = c->frequency * 1000;

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

 	cmd[4] = freq         & 0xff;
 	cmd[5] = (freq >> 8)  & 0xff;
 	cmd[6] = (freq >> 16) & 0xff;
 	cmd[7] = (freq >> 24) & 0xff;

 	/* backwards compatibility: DVB-S + 8-PSK were used for Turbo-FEC */
 	if (c->delivery_system == SYS_DVBS && c->modulation == PSK_8)
 		c->delivery_system = SYS_TURBO;

 	switch (c->delivery_system) {
 	case SYS_DVBS:
 		if (c->modulation != QPSK) {
 			dprintk("%s: unsupported modulation selected (%d)\n",
 				__func__, c->modulation);
 			return -EOPNOTSUPP;
 		}
 		c->fec_inner = FEC_AUTO;
 		break;
 	case SYS_DVBS2: /* kept for backwards compatibility */
 		dprintk("%s: DVB-S2 delivery system selected\n", __func__);
 		break;
 	case SYS_TURBO:
 		dprintk("%s: Turbo-FEC delivery system selected\n", __func__);
 		break;

 	default:
 		dprintk("%s: unsupported delivery system selected (%d)\n",
 			__func__, c->delivery_system);
 		return -EOPNOTSUPP;
 	}

 	cmd[0] =  c->symbol_rate        & 0xff;
 	cmd[1] = (c->symbol_rate >>  8) & 0xff;
 	cmd[2] = (c->symbol_rate >> 16) & 0xff;
 	cmd[3] = (c->symbol_rate >> 24) & 0xff;
 	switch (c->modulation) {
 	case QPSK:
 		if (st->is_rev1)
 			if (gp8psk_tuned_to_DCII(fe))
 				st->ops->reload(st->priv);
 		switch (c->fec_inner) {
 		case FEC_1_2:
 			cmd[9] = 0; break;
 		case FEC_2_3:
 			cmd[9] = 1; break;
 		case FEC_3_4:
 			cmd[9] = 2; break;
 		case FEC_5_6:
 			cmd[9] = 3; break;
 		case FEC_7_8:
 			cmd[9] = 4; break;
 		case FEC_AUTO:
 			cmd[9] = 5; break;
 		default:
 			cmd[9] = 5; break;
 		}
 		if (c->delivery_system == SYS_TURBO)
 			cmd[8] = ADV_MOD_TURBO_QPSK;
 		else
 			cmd[8] = ADV_MOD_DVB_QPSK;
 		break;
 	case PSK_8: /* PSK_8 is for compatibility with DN */
 		cmd[8] = ADV_MOD_TURBO_8PSK;
 		switch (c->fec_inner) {
 		case FEC_2_3:
 			cmd[9] = 0; break;
 		case FEC_3_4:
 			cmd[9] = 1; break;
 		case FEC_3_5:
 			cmd[9] = 2; break;
 		case FEC_5_6:
 			cmd[9] = 3; break;
 		case FEC_8_9:
 			cmd[9] = 4; break;
 		default:
 			cmd[9] = 0; break;
 		}
 		break;
 	case QAM_16: /* QAM_16 is for compatibility with DN */
 		cmd[8] = ADV_MOD_TURBO_16QAM;
 		cmd[9] = 0;
 		break;
 	default: /* Unknown modulation */
 		dprintk("%s: unsupported modulation selected (%d)\n",
 			__func__, c->modulation);
 		return -EOPNOTSUPP;
 	}

 	if (st->is_rev1)
 		gp8psk_set_tuner_mode(fe, 0);
 	st->ops->out(st->priv, TUNE_8PSK, 0, 0, cmd, 10);

 	st->lock = 0;
 	st->next_status_check = jiffies;
 	st->status_check_interval = 200;

 	return 0;
 }

 static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
 				    struct dvb_diseqc_master_cmd *m)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;

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

 	if (st->ops->out(st->priv, SEND_DISEQC_COMMAND, m->msg[0], 0,
 			m->msg, m->msg_len)) {
 		return -EINVAL;
 	}
 	return 0;
 }

 static int gp8psk_fe_send_diseqc_burst(struct dvb_frontend *fe,
 				       enum fe_sec_mini_cmd burst)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;
 	u8 cmd;

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

 	/* These commands are certainly wrong */
 	cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01;

 	if (st->ops->out(st->priv, SEND_DISEQC_COMMAND, cmd, 0,
 			&cmd, 0)) {
 		return -EINVAL;
 	}
 	return 0;
 }

 static int gp8psk_fe_set_tone(struct dvb_frontend *fe,
 			      enum fe_sec_tone_mode tone)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;

 	if (st->ops->out(st->priv, SET_22KHZ_TONE,
 			 (tone == SEC_TONE_ON), 0, NULL, 0)) {
 		return -EINVAL;
 	}
 	return 0;
 }

 static int gp8psk_fe_set_voltage(struct dvb_frontend *fe,
 				 enum fe_sec_voltage voltage)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;

 	if (st->ops->out(st->priv, SET_LNB_VOLTAGE,
 			 voltage == SEC_VOLTAGE_18, 0, NULL, 0)) {
 		return -EINVAL;
 	}
 	return 0;
 }

 static int gp8psk_fe_enable_high_lnb_voltage(struct dvb_frontend* fe, long onoff)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;

 	return st->ops->out(st->priv, USE_EXTRA_VOLT, onoff, 0, NULL, 0);
 }

 static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;
 	u8 cmd = sw_cmd & 0x7f;

 	if (st->ops->out(st->priv, SET_DN_SWITCH, cmd, 0, NULL, 0))
 		return -EINVAL;

 	if (st->ops->out(st->priv, SET_LNB_VOLTAGE, !!(sw_cmd & 0x80),
 			0, NULL, 0))
 		return -EINVAL;

 	return 0;
 }

 static void gp8psk_fe_release(struct dvb_frontend* fe)
 {
 	struct gp8psk_fe_state *st = fe->demodulator_priv;

 	kfree(st);
 }

 static struct dvb_frontend_ops gp8psk_fe_ops;

 struct dvb_frontend *gp8psk_fe_attach(const struct gp8psk_fe_ops *ops,
 				      void *priv, bool is_rev1)
 {
 	struct gp8psk_fe_state *st;

 	if (!ops || !ops->in || !ops->out || !ops->reload) {
 		pr_err("Error! gp8psk-fe ops not defined.\n");
 		return NULL;
 	}

 	st = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL);
 	if (!st)
 		return NULL;

 	memcpy(&st->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops));
 	st->fe.demodulator_priv = st;
 	st->ops = ops;
 	st->priv = priv;
 	st->is_rev1 = is_rev1;

 	pr_info("Frontend %sattached\n", is_rev1 ? "revision 1 " : "");

 	return &st->fe;
 }
 EXPORT_SYMBOL_GPL(gp8psk_fe_attach);

 static struct dvb_frontend_ops gp8psk_fe_ops = {
 	.delsys = { SYS_DVBS },
 	.info = {
 		.name			= "Genpix DVB-S",
 		.frequency_min		= 800000,
 		.frequency_max		= 2250000,
 		.frequency_stepsize	= 100,
 		.symbol_rate_min        = 1000000,
 		.symbol_rate_max        = 45000000,
 		.symbol_rate_tolerance  = 500,  /* ppm */
 		.caps = FE_CAN_INVERSION_AUTO |
 			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_FEC_AUTO |
 			/*
 			 * FE_CAN_QAM_16 is for compatibility
 			 * (Myth incorrectly detects Turbo-QPSK as plain QAM-16)
 			 */
 			FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_TURBO_FEC
 	},

 	.release = gp8psk_fe_release,

 	.init = NULL,
 	.sleep = NULL,

 	.set_frontend = gp8psk_fe_set_frontend,

 	.get_tune_settings = gp8psk_fe_get_tune_settings,

 	.read_status = gp8psk_fe_read_status,
 	.read_ber = gp8psk_fe_read_ber,
 	.read_signal_strength = gp8psk_fe_read_signal_strength,
 	.read_snr = gp8psk_fe_read_snr,
 	.read_ucblocks = gp8psk_fe_read_unc_blocks,

 	.diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg,
 	.diseqc_send_burst = gp8psk_fe_send_diseqc_burst,
 	.set_tone = gp8psk_fe_set_tone,
 	.set_voltage = gp8psk_fe_set_voltage,
 	.dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd,
 	.enable_high_lnb_voltage = gp8psk_fe_enable_high_lnb_voltage
 };

 MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>");
 MODULE_DESCRIPTION("Frontend Driver for Genpix DVB-S");
 MODULE_VERSION("1.1");
 MODULE_LICENSE("GPL");
	/*
	* Frontend driver for the GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
	*
	* Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
	* Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
	*
	* Thanks to GENPIX for the sample code used to implement this module.
	*
	* This module is based off the vp7045 and vp702x modules
	*
	* 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.
	*/

	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

	#include "gp8psk-fe.h"
	#include "dvb_frontend.h"

	static int debug;
	module_param(debug, int, 0644);
	MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");

	#define dprintk(fmt, arg...) do { \
	if (debug) \
	printk(KERN_DEBUG pr_fmt("%s: " fmt), \
	__func__, ##arg); \
	} while (0)

	struct gp8psk_fe_state {
	struct dvb_frontend fe;
	void *priv;
	const struct gp8psk_fe_ops *ops;
	bool is_rev1;
	u8 lock;
	u16 snr;
	unsigned long next_status_check;
	unsigned long status_check_interval;
	};

	static int gp8psk_tuned_to_DCII(struct dvb_frontend *fe)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;
	u8 status;

	st->ops->in(st->priv, GET_8PSK_CONFIG, 0, 0, &status, 1);
	return status & bmDCtuned;
	}

	static int gp8psk_set_tuner_mode(struct dvb_frontend *fe, int mode)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;

	return st->ops->out(st->priv, SET_8PSK_CONFIG, mode, 0, NULL, 0);
	}

	static int gp8psk_fe_update_status(struct gp8psk_fe_state *st)
	{
	u8 buf[6];
	if (time_after(jiffies,st->next_status_check)) {
	st->ops->in(st->priv, GET_SIGNAL_LOCK, 0, 0, &st->lock, 1);
	st->ops->in(st->priv, GET_SIGNAL_STRENGTH, 0, 0, buf, 6);
	st->snr = (buf[1]) << 8 \| buf[0];
	st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
	}
	return 0;
	}

	static int gp8psk_fe_read_status(struct dvb_frontend *fe,
	enum fe_status *status)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;
	gp8psk_fe_update_status(st);

	if (st->lock)
	*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 = 100;
	return 0;
	}

	/* not supported by this Frontend */
	static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
	{
	(void) fe;
	*ber = 0;
	return 0;
	}

	/* not supported by this Frontend */
	static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
	{
	(void) fe;
	*unc = 0;
	return 0;
	}

	static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;
	gp8psk_fe_update_status(st);
	/* snr is reported in dBu256 /
	*snr = st->snr;
	return 0;
	}

	static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;
	gp8psk_fe_update_status(st);
	/* snr is reported in dBu256 /
	/* snr / 38.4 ~= 100% strength */
	/* snr * 17 returns 100% strength as 65535 */
	if (st->snr > 0xf00)
	*strength = 0xffff;
	else
	strength = (st->snr << 4) + st->snr; / snr17 /
	return 0;
	}

	static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
	{
	tune->min_delay_ms = 800;
	return 0;
	}

	static int gp8psk_fe_set_frontend(struct dvb_frontend *fe)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;
	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
	u8 cmd[10];
	u32 freq = c->frequency * 1000;

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

	cmd[4] = freq & 0xff;
	cmd[5] = (freq >> 8) & 0xff;
	cmd[6] = (freq >> 16) & 0xff;
	cmd[7] = (freq >> 24) & 0xff;

	/* backwards compatibility: DVB-S + 8-PSK were used for Turbo-FEC */
	if (c->delivery_system == SYS_DVBS && c->modulation == PSK_8)
	c->delivery_system = SYS_TURBO;

	switch (c->delivery_system) {
	case SYS_DVBS:
	if (c->modulation != QPSK) {
	dprintk("%s: unsupported modulation selected (%d)\n",
	__func__, c->modulation);
	return -EOPNOTSUPP;
	}
	c->fec_inner = FEC_AUTO;
	break;
	case SYS_DVBS2: /* kept for backwards compatibility */
	dprintk("%s: DVB-S2 delivery system selected\n", __func__);
	break;
	case SYS_TURBO:
	dprintk("%s: Turbo-FEC delivery system selected\n", __func__);
	break;

	default:
	dprintk("%s: unsupported delivery system selected (%d)\n",
	__func__, c->delivery_system);
	return -EOPNOTSUPP;
	}

	cmd[0] = c->symbol_rate & 0xff;
	cmd[1] = (c->symbol_rate >> 8) & 0xff;
	cmd[2] = (c->symbol_rate >> 16) & 0xff;
	cmd[3] = (c->symbol_rate >> 24) & 0xff;
	switch (c->modulation) {
	case QPSK:
	if (st->is_rev1)
	if (gp8psk_tuned_to_DCII(fe))
	st->ops->reload(st->priv);
	switch (c->fec_inner) {
	case FEC_1_2:
	cmd[9] = 0; break;
	case FEC_2_3:
	cmd[9] = 1; break;
	case FEC_3_4:
	cmd[9] = 2; break;
	case FEC_5_6:
	cmd[9] = 3; break;
	case FEC_7_8:
	cmd[9] = 4; break;
	case FEC_AUTO:
	cmd[9] = 5; break;
	default:
	cmd[9] = 5; break;
	}
	if (c->delivery_system == SYS_TURBO)
	cmd[8] = ADV_MOD_TURBO_QPSK;
	else
	cmd[8] = ADV_MOD_DVB_QPSK;
	break;
	case PSK_8: /* PSK_8 is for compatibility with DN */
	cmd[8] = ADV_MOD_TURBO_8PSK;
	switch (c->fec_inner) {
	case FEC_2_3:
	cmd[9] = 0; break;
	case FEC_3_4:
	cmd[9] = 1; break;
	case FEC_3_5:
	cmd[9] = 2; break;
	case FEC_5_6:
	cmd[9] = 3; break;
	case FEC_8_9:
	cmd[9] = 4; break;
	default:
	cmd[9] = 0; break;
	}
	break;
	case QAM_16: /* QAM_16 is for compatibility with DN */
	cmd[8] = ADV_MOD_TURBO_16QAM;
	cmd[9] = 0;
	break;
	default: /* Unknown modulation */
	dprintk("%s: unsupported modulation selected (%d)\n",
	__func__, c->modulation);
	return -EOPNOTSUPP;
	}

	if (st->is_rev1)
	gp8psk_set_tuner_mode(fe, 0);
	st->ops->out(st->priv, TUNE_8PSK, 0, 0, cmd, 10);

	st->lock = 0;
	st->next_status_check = jiffies;
	st->status_check_interval = 200;

	return 0;
	}

	static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
	struct dvb_diseqc_master_cmd *m)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;

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

	if (st->ops->out(st->priv, SEND_DISEQC_COMMAND, m->msg[0], 0,
	m->msg, m->msg_len)) {
	return -EINVAL;
	}
	return 0;
	}

	static int gp8psk_fe_send_diseqc_burst(struct dvb_frontend *fe,
	enum fe_sec_mini_cmd burst)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;
	u8 cmd;

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

	/* These commands are certainly wrong */
	cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01;

	if (st->ops->out(st->priv, SEND_DISEQC_COMMAND, cmd, 0,
	&cmd, 0)) {
	return -EINVAL;
	}
	return 0;
	}

	static int gp8psk_fe_set_tone(struct dvb_frontend *fe,
	enum fe_sec_tone_mode tone)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;

	if (st->ops->out(st->priv, SET_22KHZ_TONE,
	(tone == SEC_TONE_ON), 0, NULL, 0)) {
	return -EINVAL;
	}
	return 0;
	}

	static int gp8psk_fe_set_voltage(struct dvb_frontend *fe,
	enum fe_sec_voltage voltage)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;

	if (st->ops->out(st->priv, SET_LNB_VOLTAGE,
	voltage == SEC_VOLTAGE_18, 0, NULL, 0)) {
	return -EINVAL;
	}
	return 0;
	}

	static int gp8psk_fe_enable_high_lnb_voltage(struct dvb_frontend* fe, long onoff)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;

	return st->ops->out(st->priv, USE_EXTRA_VOLT, onoff, 0, NULL, 0);
	}

	static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;
	u8 cmd = sw_cmd & 0x7f;

	if (st->ops->out(st->priv, SET_DN_SWITCH, cmd, 0, NULL, 0))
	return -EINVAL;

	if (st->ops->out(st->priv, SET_LNB_VOLTAGE, !!(sw_cmd & 0x80),
	0, NULL, 0))
	return -EINVAL;

	return 0;
	}

	static void gp8psk_fe_release(struct dvb_frontend* fe)
	{
	struct gp8psk_fe_state *st = fe->demodulator_priv;

	kfree(st);
	}

	static struct dvb_frontend_ops gp8psk_fe_ops;

	struct dvb_frontend gp8psk_fe_attach(const struct gp8psk_fe_ops ops,
	void *priv, bool is_rev1)
	{
	struct gp8psk_fe_state *st;

	if (!ops \|\| !ops->in \|\| !ops->out \|\| !ops->reload) {
	pr_err("Error! gp8psk-fe ops not defined.\n");
	return NULL;
	}

	st = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL);
	if (!st)
	return NULL;

	memcpy(&st->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops));
	st->fe.demodulator_priv = st;
	st->ops = ops;
	st->priv = priv;
	st->is_rev1 = is_rev1;

	pr_info("Frontend %sattached\n", is_rev1 ? "revision 1 " : "");

	return &st->fe;
	}
	EXPORT_SYMBOL_GPL(gp8psk_fe_attach);

	static struct dvb_frontend_ops gp8psk_fe_ops = {
	.delsys = { SYS_DVBS },
	.info = {
	.name = "Genpix DVB-S",
	.frequency_min = 800000,
	.frequency_max = 2250000,
	.frequency_stepsize = 100,
	.symbol_rate_min = 1000000,
	.symbol_rate_max = 45000000,
	.symbol_rate_tolerance = 500, /* ppm */
	.caps = FE_CAN_INVERSION_AUTO \|
	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_FEC_AUTO \|
	/*
	* FE_CAN_QAM_16 is for compatibility
	* (Myth incorrectly detects Turbo-QPSK as plain QAM-16)
	*/
	FE_CAN_QPSK \| FE_CAN_QAM_16 \| FE_CAN_TURBO_FEC
	},

	.release = gp8psk_fe_release,

	.init = NULL,
	.sleep = NULL,

	.set_frontend = gp8psk_fe_set_frontend,

	.get_tune_settings = gp8psk_fe_get_tune_settings,

	.read_status = gp8psk_fe_read_status,
	.read_ber = gp8psk_fe_read_ber,
	.read_signal_strength = gp8psk_fe_read_signal_strength,
	.read_snr = gp8psk_fe_read_snr,
	.read_ucblocks = gp8psk_fe_read_unc_blocks,

	.diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg,
	.diseqc_send_burst = gp8psk_fe_send_diseqc_burst,
	.set_tone = gp8psk_fe_set_tone,
	.set_voltage = gp8psk_fe_set_voltage,
	.dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd,
	.enable_high_lnb_voltage = gp8psk_fe_enable_high_lnb_voltage
	};

	MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>");
	MODULE_DESCRIPTION("Frontend Driver for Genpix DVB-S");
	MODULE_VERSION("1.1");
	MODULE_LICENSE("GPL");