dst.c

linux-2.6.15.6

			dprintk(verbose, DST_INFO, 1, "Recovery failed.");
			goto error;
		}
		goto error;
	}
	if (state->rxbuffer[7] != dst_check_sum(state->rxbuffer, 7)) {
		dprintk(verbose, DST_INFO, 1, "checksum failure");
		goto error;
	}
	up(&state->dst_mutex);
	return 0;

error:
	up(&state->dst_mutex);
	return -EIO;

}
EXPORT_SYMBOL(dst_command);

static int dst_get_signal(struct dst_state *state)
{
	int retval;
	u8 get_signal[] = { 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfb };
	//dprintk("%s: Getting Signal strength and other parameters\n", __FUNCTION__);
	if ((state->diseq_flags & ATTEMPT_TUNE) == 0) {
		state->decode_lock = state->decode_strength = state->decode_snr = 0;
		return 0;
	}
	if (0 == (state->diseq_flags & HAS_LOCK)) {
		state->decode_lock = state->decode_strength = state->decode_snr = 0;
		return 0;
	}
	if (time_after_eq(jiffies, state->cur_jiff + (HZ / 5))) {
		retval = dst_command(state, get_signal, 8);
		if (retval < 0)
			return retval;
		if (state->dst_type == DST_TYPE_IS_SAT) {
			state->decode_lock = ((state->rxbuffer[6] & 0x10) == 0) ? 1 : 0;
			state->decode_strength = state->rxbuffer[5] << 8;
			state->decode_snr = state->rxbuffer[2] << 8 | state->rxbuffer[3];
		} else if ((state->dst_type == DST_TYPE_IS_TERR) || (state->dst_type == DST_TYPE_IS_CABLE)) {
			state->decode_lock = (state->rxbuffer[1]) ? 1 : 0;
			state->decode_strength = state->rxbuffer[4] << 8;
			state->decode_snr = state->rxbuffer[3] << 8;
		}
		state->cur_jiff = jiffies;
	}
	return 0;
}

static int dst_tone_power_cmd(struct dst_state *state)
{
	u8 paket[8] = { 0x00, 0x09, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00 };

	if (state->dst_type == DST_TYPE_IS_TERR)
		return 0;
	paket[4] = state->tx_tuna[4];
	paket[2] = state->tx_tuna[2];
	paket[3] = state->tx_tuna[3];
	paket[7] = dst_check_sum (paket, 7);
	dst_command(state, paket, 8);

	return 0;
}

static int dst_get_tuna(struct dst_state *state)
{
	int retval;

	if ((state->diseq_flags & ATTEMPT_TUNE) == 0)
		return 0;
	state->diseq_flags &= ~(HAS_LOCK);
	if (!dst_wait_dst_ready(state, NO_DELAY))
		return -EIO;
	if (state->type_flags & DST_TYPE_HAS_NEWTUNE)
		/* how to get variable length reply ???? */
		retval = read_dst(state, state->rx_tuna, 10);
	else
		retval = read_dst(state, &state->rx_tuna[2], FIXED_COMM);
	if (retval < 0) {
		dprintk(verbose, DST_DEBUG, 1, "read not successful");
		return retval;
	}
	if (state->type_flags & DST_TYPE_HAS_NEWTUNE) {
		if (state->rx_tuna[9] != dst_check_sum(&state->rx_tuna[0], 9)) {
			dprintk(verbose, DST_INFO, 1, "checksum failure ? ");
			return -EIO;
		}
	} else {
		if (state->rx_tuna[9] != dst_check_sum(&state->rx_tuna[2], 7)) {
			dprintk(verbose, DST_INFO, 1, "checksum failure? ");
			return -EIO;
		}
	}
	if (state->rx_tuna[2] == 0 && state->rx_tuna[3] == 0)
		return 0;
	if (state->dst_type == DST_TYPE_IS_SAT) {
		state->decode_freq = ((state->rx_tuna[2] & 0x7f) << 8) + state->rx_tuna[3];
	} else {
		state->decode_freq = ((state->rx_tuna[2] & 0x7f) << 16) + (state->rx_tuna[3] << 8) + state->rx_tuna[4];
	}
	state->decode_freq = state->decode_freq * 1000;
	state->decode_lock = 1;
	state->diseq_flags |= HAS_LOCK;

	return 1;
}

static int dst_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage);

static int dst_write_tuna(struct dvb_frontend *fe)
{
	struct dst_state *state = fe->demodulator_priv;
	int retval;
	u8 reply;

	dprintk(verbose, DST_INFO, 1, "type_flags 0x%x ", state->type_flags);
	state->decode_freq = 0;
	state->decode_lock = state->decode_strength = state->decode_snr = 0;
	if (state->dst_type == DST_TYPE_IS_SAT) {
		if (!(state->diseq_flags & HAS_POWER))
			dst_set_voltage(fe, SEC_VOLTAGE_13);
	}
	state->diseq_flags &= ~(HAS_LOCK | ATTEMPT_TUNE);
	down(&state->dst_mutex);
	if ((dst_comm_init(state)) < 0) {
		dprintk(verbose, DST_DEBUG, 1, "DST Communication initialization failed.");
		goto error;
	}
	if (state->type_flags & DST_TYPE_HAS_NEWTUNE) {
		state->tx_tuna[9] = dst_check_sum(&state->tx_tuna[0], 9);
		retval = write_dst(state, &state->tx_tuna[0], 10);
	} else {
		state->tx_tuna[9] = dst_check_sum(&state->tx_tuna[2], 7);
		retval = write_dst(state, &state->tx_tuna[2], FIXED_COMM);
	}
	if (retval < 0) {
		dst_pio_disable(state);
		dprintk(verbose, DST_DEBUG, 1, "write not successful");
		goto werr;
	}
	if ((dst_pio_disable(state)) < 0) {
		dprintk(verbose, DST_DEBUG, 1, "DST PIO disable failed !");
		goto error;
	}
	if ((read_dst(state, &reply, GET_ACK) < 0)) {
		dprintk(verbose, DST_DEBUG, 1, "read verify not successful.");
		goto error;
	}
	if (reply != ACK) {
		dprintk(verbose, DST_DEBUG, 1, "write not acknowledged 0x%02x ", reply);
		goto error;
	}
	state->diseq_flags |= ATTEMPT_TUNE;
	retval = dst_get_tuna(state);
werr:
	up(&state->dst_mutex);
	return retval;

error:
	up(&state->dst_mutex);
	return -EIO;
}

/*
 * line22k0    0x00, 0x09, 0x00, 0xff, 0x01, 0x00, 0x00, 0x00
 * line22k1    0x00, 0x09, 0x01, 0xff, 0x01, 0x00, 0x00, 0x00
 * line22k2    0x00, 0x09, 0x02, 0xff, 0x01, 0x00, 0x00, 0x00
 * tone        0x00, 0x09, 0xff, 0x00, 0x01, 0x00, 0x00, 0x00
 * data        0x00, 0x09, 0xff, 0x01, 0x01, 0x00, 0x00, 0x00
 * power_off   0x00, 0x09, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00
 * power_on    0x00, 0x09, 0xff, 0xff, 0x01, 0x00, 0x00, 0x00
 * Diseqc 1    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf0, 0xec
 * Diseqc 2    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf4, 0xe8
 * Diseqc 3    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf8, 0xe4
 * Diseqc 4    0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xfc, 0xe0
 */

static int dst_set_diseqc(struct dvb_frontend *fe, struct dvb_diseqc_master_cmd *cmd)
{
	struct dst_state *state = fe->demodulator_priv;
	u8 paket[8] = { 0x00, 0x08, 0x04, 0xe0, 0x10, 0x38, 0xf0, 0xec };

	if (state->dst_type != DST_TYPE_IS_SAT)
		return 0;
	if (cmd->msg_len == 0 || cmd->msg_len > 4)
		return -EINVAL;
	memcpy(&paket[3], cmd->msg, cmd->msg_len);
	paket[7] = dst_check_sum(&paket[0], 7);
	dst_command(state, paket, 8);
	return 0;
}

static int dst_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
{
	int need_cmd;
	struct dst_state *state = fe->demodulator_priv;

	state->voltage = voltage;
	if (state->dst_type != DST_TYPE_IS_SAT)
		return 0;

	need_cmd = 0;

	switch (voltage) {
	case SEC_VOLTAGE_13:
	case SEC_VOLTAGE_18:
		if ((state->diseq_flags & HAS_POWER) == 0)
			need_cmd = 1;
		state->diseq_flags |= HAS_POWER;
		state->tx_tuna[4] = 0x01;
		break;
	case SEC_VOLTAGE_OFF:
		need_cmd = 1;
		state->diseq_flags &= ~(HAS_POWER | HAS_LOCK | ATTEMPT_TUNE);
		state->tx_tuna[4] = 0x00;
		break;
	default:
		return -EINVAL;
	}

	if (need_cmd)
		dst_tone_power_cmd(state);

	return 0;
}

static int dst_set_tone(struct dvb_frontend *fe, fe_sec_tone_mode_t tone)
{
	struct dst_state *state = fe->demodulator_priv;

	state->tone = tone;
	if (state->dst_type != DST_TYPE_IS_SAT)
		return 0;

	switch (tone) {
	case SEC_TONE_OFF:
		if (state->type_flags & DST_TYPE_HAS_OBS_REGS)
		    state->tx_tuna[2] = 0x00;
		else
		    state->tx_tuna[2] = 0xff;
		break;

	case SEC_TONE_ON:
		state->tx_tuna[2] = 0x02;
		break;
	default:
		return -EINVAL;
	}
	dst_tone_power_cmd(state);

	return 0;
}

static int dst_send_burst(struct dvb_frontend *fe, fe_sec_mini_cmd_t minicmd)
{
	struct dst_state *state = fe->demodulator_priv;

	if (state->dst_type != DST_TYPE_IS_SAT)
		return 0;
	state->minicmd = minicmd;
	switch (minicmd) {
	case SEC_MINI_A:
		state->tx_tuna[3] = 0x02;
		break;
	case SEC_MINI_B:
		state->tx_tuna[3] = 0xff;
		break;
	}
	dst_tone_power_cmd(state);

	return 0;
}


static int dst_init(struct dvb_frontend *fe)
{
	struct dst_state *state = fe->demodulator_priv;

	static u8 sat_tuna_188[] = { 0x09, 0x00, 0x03, 0xb6, 0x01, 0x00, 0x73, 0x21, 0x00, 0x00 };
	static u8 sat_tuna_204[] = { 0x00, 0x00, 0x03, 0xb6, 0x01, 0x55, 0xbd, 0x50, 0x00, 0x00 };
	static u8 ter_tuna_188[] = { 0x09, 0x00, 0x03, 0xb6, 0x01, 0x07, 0x00, 0x00, 0x00, 0x00 };
	static u8 ter_tuna_204[] = { 0x00, 0x00, 0x03, 0xb6, 0x01, 0x07, 0x00, 0x00, 0x00, 0x00 };
	static u8 cab_tuna_204[] = { 0x00, 0x00, 0x03, 0xb6, 0x01, 0x07, 0x00, 0x00, 0x00, 0x00 };
	static u8 cab_tuna_188[] = { 0x09, 0x00, 0x03, 0xb6, 0x01, 0x07, 0x00, 0x00, 0x00, 0x00 };

	state->inversion = INVERSION_OFF;
	state->voltage = SEC_VOLTAGE_13;
	state->tone = SEC_TONE_OFF;
	state->diseq_flags = 0;
	state->k22 = 0x02;
	state->bandwidth = BANDWIDTH_7_MHZ;
	state->cur_jiff = jiffies;
	if (state->dst_type == DST_TYPE_IS_SAT)
		memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? sat_tuna_188 : sat_tuna_204), sizeof (sat_tuna_204));
	else if (state->dst_type == DST_TYPE_IS_TERR)
		memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? ter_tuna_188 : ter_tuna_204), sizeof (ter_tuna_204));
	else if (state->dst_type == DST_TYPE_IS_CABLE)
		memcpy(state->tx_tuna, ((state->type_flags & DST_TYPE_HAS_NEWTUNE) ? cab_tuna_188 : cab_tuna_204), sizeof (cab_tuna_204));

	return 0;
}

static int dst_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
	struct dst_state *state = fe->demodulator_priv;

	*status = 0;
	if (state->diseq_flags & HAS_LOCK) {
//		dst_get_signal(state);	// don't require(?) to ask MCU
		if (state->decode_lock)
			*status |= FE_HAS_LOCK | FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC | FE_HAS_VITERBI;
	}

	return 0;
}

static int dst_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
{
	struct dst_state *state = fe->demodulator_priv;

	dst_get_signal(state);
	*strength = state->decode_strength;

	return 0;
}

static int dst_read_snr(struct dvb_frontend *fe, u16 *snr)
{
	struct dst_state *state = fe->demodulator_priv;

	dst_get_signal(state);
	*snr = state->decode_snr;

	return 0;
}

static int dst_set_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
{
	struct dst_state *state = fe->demodulator_priv;

	dst_set_freq(state, p->frequency);
	dprintk(verbose, DST_DEBUG, 1, "Set Frequency=[%d]", p->frequency);

	if (state->dst_type == DST_TYPE_IS_SAT) {
		if (state->type_flags & DST_TYPE_HAS_OBS_REGS)
			dst_set_inversion(state, p->inversion);
		dst_set_fec(state, p->u.qpsk.fec_inner);
		dst_set_symbolrate(state, p->u.qpsk.symbol_rate);
		dst_set_polarization(state);
		dprintk(verbose, DST_DEBUG, 1, "Set Symbolrate=[%d]", p->u.qpsk.symbol_rate);

	} else if (state->dst_type == DST_TYPE_IS_TERR)
		dst_set_bandwidth(state, p->u.ofdm.bandwidth);
	else if (state->dst_type == DST_TYPE_IS_CABLE) {
		dst_set_fec(state, p->u.qam.fec_inner);
		dst_set_symbolrate(state, p->u.qam.symbol_rate);
		dst_set_modulation(state, p->u.qam.modulation);
	}
	dst_write_tuna(fe);

	return 0;
}

static int dst_get_frontend(struct dvb_frontend *fe, struct dvb_frontend_parameters *p)
{
	struct dst_state *state = fe->demodulator_priv;

	p->frequency = state->decode_freq;
	if (state->dst_type == DST_TYPE_IS_SAT) {
		if (state->type_flags & DST_TYPE_HAS_OBS_REGS)
			p->inversion = state->inversion;
		p->u.qpsk.symbol_rate = state->symbol_rate;
		p->u.qpsk.fec_inner = dst_get_fec(state);
	} else if (state->dst_type == DST_TYPE_IS_TERR) {
		p->u.ofdm.bandwidth = state->bandwidth;
	} else if (state->dst_type == DST_TYPE_IS_CABLE) {
		p->u.qam.symbol_rate = state->symbol_rate;
		p->u.qam.fec_inner = dst_get_fec(state);
		p->u.qam.modulation = dst_get_modulation(state);
	}

	return 0;
}

static void dst_release(struct dvb_frontend *fe)
{
	struct dst_state *state = fe->demodulator_priv;
	kfree(state);
}

static struct dvb_frontend_ops dst_dvbt_ops;
static struct dvb_frontend_ops dst_dvbs_ops;
static struct dvb_frontend_ops dst_dvbc_ops;

struct dst_state *dst_attach(struct dst_state *state, struct dvb_adapter *dvb_adapter)
{
	/* check if the ASIC is there */
	if (dst_probe(state) < 0) {
		kfree(state);
		return NULL;
	}
	/* determine settings based on type */
	switch (state->dst_type) {
	case DST_TYPE_IS_TERR:
		memcpy(&state->ops, &dst_dvbt_ops, sizeof(struct dvb_frontend_ops));
		break;
	case DST_TYPE_IS_CABLE:
		memcpy(&state->ops, &dst_dvbc_ops, sizeof(struct dvb_frontend_ops));
		break;
	case DST_TYPE_IS_SAT:
		memcpy(&state->ops, &dst_dvbs_ops, sizeof(struct dvb_frontend_ops));
		break;
	default:
		dprintk(verbose, DST_ERROR, 1, "unknown DST type. please report to the LinuxTV.org DVB mailinglist.");
		kfree(state);
		return NULL;
	}

	/* create dvb_frontend */
	state->frontend.ops = &state->ops;
	state->frontend.demodulator_priv = state;

	return state;				/*	Manu (DST is a card not a frontend)	*/
}

EXPORT_SYMBOL(dst_attach);

static struct dvb_frontend_ops dst_dvbt_ops = {

	.info = {
		.name = "DST DVB-T",
		.type = FE_OFDM,
		.frequency_min = 137000000,
		.frequency_max = 858000000,
		.frequency_stepsize = 166667,
		.caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO
	},

	.release = dst_release,
	.init = dst_init,
	.set_frontend = dst_set_frontend,
	.get_frontend = dst_get_frontend,
	.read_status = dst_read_status,
	.read_signal_strength = dst_read_signal_strength,
	.read_snr = dst_read_snr,
};

static struct dvb_frontend_ops dst_dvbs_ops = {

	.info = {
		.name = "DST DVB-S",
		.type = FE_QPSK,
		.frequency_min = 950000,
		.frequency_max = 2150000,
		.frequency_stepsize = 1000,	/* kHz for QPSK frontends */
		.frequency_tolerance = 29500,
		.symbol_rate_min = 1000000,
		.symbol_rate_max = 45000000,
	/*     . symbol_rate_tolerance	=	???,*/
		.caps = FE_CAN_FEC_AUTO | FE_CAN_QPSK
	},

	.release = dst_release,
	.init = dst_init,
	.set_frontend = dst_set_frontend,
	.get_frontend = dst_get_frontend,
	.read_status = dst_read_status,
	.read_signal_strength = dst_read_signal_strength,
	.read_snr = dst_read_snr,
	.diseqc_send_burst = dst_send_burst,
	.diseqc_send_master_cmd = dst_set_diseqc,
	.set_voltage = dst_set_voltage,
	.set_tone = dst_set_tone,
};

static struct dvb_frontend_ops dst_dvbc_ops = {

	.info = {
		.name = "DST DVB-C",
		.type = FE_QAM,
		.frequency_stepsize = 62500,
		.frequency_min = 51000000,
		.frequency_max = 858000000,
		.symbol_rate_min = 1000000,
		.symbol_rate_max = 45000000,
	/*     . symbol_rate_tolerance	=	???,*/
		.caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO
	},

	.release = dst_release,
	.init = dst_init,
	.set_frontend = dst_set_frontend,
	.get_frontend = dst_get_frontend,
	.read_status = dst_read_status,
	.read_signal_strength = dst_read_signal_strength,
	.read_snr = dst_read_snr,
};

MODULE_DESCRIPTION("DST DVB-S/T/C Combo Frontend driver");
MODULE_AUTHOR("Jamie Honan, Manu Abraham");
MODULE_LICENSE("GPL");