/* DVB USB compliant Linux 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. * * see Documentation/dvb/README.dvb-usb for more information */#include "gp8psk.h"struct gp8psk_fe_state {	struct dvb_frontend fe;	struct dvb_usb_device *d;	u8 lock;	u16 snr;	unsigned long next_status_check;	unsigned long status_check_interval;};static int gp8psk_fe_update_status(struct gp8psk_fe_state *st){	u8 buf[6];	if (time_after(jiffies,st->next_status_check)) {		gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0,0,&st->lock,1);		gp8psk_usb_in_op(st->d, 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, fe_status_t *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 = 200;	return 0;}static int gp8psk_fe_set_frontend(struct dvb_frontend* fe,				  struct dvb_frontend_parameters *fep){	struct gp8psk_fe_state *state = fe->demodulator_priv;	u8 cmd[10];	u32 freq = fep->frequency * 1000;	cmd[4] = freq         & 0xff;	cmd[5] = (freq >> 8)  & 0xff;	cmd[6] = (freq >> 16) & 0xff;	cmd[7] = (freq >> 24) & 0xff;	switch(fe->ops.info.type) {	case FE_QPSK:		cmd[0] =  fep->u.qpsk.symbol_rate        & 0xff;		cmd[1] = (fep->u.qpsk.symbol_rate >>  8) & 0xff;		cmd[2] = (fep->u.qpsk.symbol_rate >> 16) & 0xff;		cmd[3] = (fep->u.qpsk.symbol_rate >> 24) & 0xff;		cmd[8] = ADV_MOD_DVB_QPSK;		cmd[9] = 0x03; /*ADV_MOD_FEC_XXX*/		break;	default:		// other modes are unsuported right now		cmd[0] = 0;		cmd[1] = 0;		cmd[2] = 0;		cmd[3] = 0;		cmd[8] = 0;		cmd[9] = 0;		break;	}	gp8psk_usb_out_op(state->d,TUNE_8PSK,0,0,cmd,10);	state->lock = 0;	state->next_status_check = jiffies;	state->status_check_interval = 200;	return 0;}static int gp8psk_fe_get_frontend(struct dvb_frontend* fe,				  struct dvb_frontend_parameters *fep){	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;	deb_fe("%s\n",__func__);	if (gp8psk_usb_out_op(st->d,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,				    fe_sec_mini_cmd_t burst){	struct gp8psk_fe_state *st = fe->demodulator_priv;	u8 cmd;	deb_fe("%s\n",__func__);	/* These commands are certainly wrong */	cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01;	if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, cmd, 0,			&cmd, 0)) {		return -EINVAL;	}	return 0;}static int gp8psk_fe_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone){	struct gp8psk_fe_state* state = fe->demodulator_priv;	if (gp8psk_usb_out_op(state->d,SET_22KHZ_TONE,		 (tone == SEC_TONE_ON), 0, NULL, 0)) {		return -EINVAL;	}	return 0;}static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage){	struct gp8psk_fe_state* state = fe->demodulator_priv;	if (gp8psk_usb_out_op(state->d,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* state = fe->demodulator_priv;	return gp8psk_usb_out_op(state->d, 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* state = fe->demodulator_priv;	u8 cmd = sw_cmd & 0x7f;	if (gp8psk_usb_out_op(state->d,SET_DN_SWITCH, cmd, 0,			NULL, 0)) {		return -EINVAL;	}	if (gp8psk_usb_out_op(state->d,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 *state = fe->demodulator_priv;	kfree(state);}static struct dvb_frontend_ops gp8psk_fe_ops;struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d){	struct gp8psk_fe_state *s = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL);	if (s == NULL)		goto error;	s->d = d;	memcpy(&s->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops));	s->fe.demodulator_priv = s;	goto success;error:	return NULL;success:	return &s->fe;}static struct dvb_frontend_ops gp8psk_fe_ops = {	.info = {		.name			= "Genpix 8psk-to-USB2 DVB-S",		.type			= FE_QPSK,		.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_QPSK	},	.release = gp8psk_fe_release,	.init = NULL,	.sleep = NULL,	.set_frontend = gp8psk_fe_set_frontend,	.get_frontend = gp8psk_fe_get_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};