dib3000mc.c

linux-2.6.15.6

	struct dvb_ofdm_parameters *ofdm = &fep->u.ofdm;
	int search_state,auto_val;
	u16 val;

	if (tuner && state->config.pll_set) { /* initial call from dvb */
		state->config.pll_set(fe,fep);

		state->last_tuned_freq = fep->frequency;
	//	if (!scanboost) {
			dib3000mc_set_timing(state,0,ofdm->transmission_mode,ofdm->bandwidth);
			dib3000mc_init_auto_scan(state, ofdm->bandwidth, 0);
			state->last_tuned_bw = ofdm->bandwidth;

			wr_foreach(dib3000mc_reg_agc_bandwidth,dib3000mc_agc_bandwidth);
			wr(DIB3000MC_REG_RESTART,DIB3000MC_RESTART_AGC);
			wr(DIB3000MC_REG_RESTART,DIB3000MC_RESTART_OFF);

			/* Default cfg isi offset adp */
			wr_foreach(dib3000mc_reg_offset,dib3000mc_offset[0]);

			wr(DIB3000MC_REG_ISI,DIB3000MC_ISI_DEFAULT | DIB3000MC_ISI_INHIBIT);
			dib3000mc_set_adp_cfg(state,ofdm->constellation);
			wr(DIB3000MC_REG_UNK_133,DIB3000MC_UNK_133);

			wr_foreach(dib3000mc_reg_bandwidth_general,dib3000mc_bandwidth_general);
			/* power smoothing */
			if (ofdm->bandwidth != BANDWIDTH_8_MHZ) {
				wr_foreach(dib3000mc_reg_bw,dib3000mc_bw[0]);
			} else {
				wr_foreach(dib3000mc_reg_bw,dib3000mc_bw[3]);
			}
			auto_val = 0;
			dib3000mc_set_general_cfg(state,fep,&auto_val);
			dib3000mc_set_impulse_noise(state,0,ofdm->constellation,ofdm->bandwidth);

			val = rd(DIB3000MC_REG_DEMOD_PARM);
			wr(DIB3000MC_REG_DEMOD_PARM,val|DIB3000MC_DEMOD_RST_DEMOD_ON);
			wr(DIB3000MC_REG_DEMOD_PARM,val);
	//	}
		msleep(70);

		/* something has to be auto searched */
		if (auto_val) {
			int as_count=0;

			deb_setf("autosearch enabled.\n");

			val = rd(DIB3000MC_REG_DEMOD_PARM);
			wr(DIB3000MC_REG_DEMOD_PARM,val | DIB3000MC_DEMOD_RST_AUTO_SRCH_ON);
			wr(DIB3000MC_REG_DEMOD_PARM,val);

			while ((search_state = dib3000_search_status(
						rd(DIB3000MC_REG_AS_IRQ),1)) < 0 && as_count++ < 100)
				msleep(10);

			deb_info("search_state after autosearch %d after %d checks\n",search_state,as_count);

			if (search_state == 1) {
				struct dvb_frontend_parameters feps;
				if (dib3000mc_get_frontend(fe, &feps) == 0) {
					deb_setf("reading tuning data from frontend succeeded.\n");
					return dib3000mc_set_frontend(fe, &feps, 0);
				}
			}
		} else {
			dib3000mc_set_impulse_noise(state,0,ofdm->transmission_mode,ofdm->bandwidth);
			wr(DIB3000MC_REG_ISI,DIB3000MC_ISI_DEFAULT|DIB3000MC_ISI_ACTIVATE);
			dib3000mc_set_adp_cfg(state,ofdm->constellation);

			/* set_offset_cfg */
			wr_foreach(dib3000mc_reg_offset,
					dib3000mc_offset[(ofdm->transmission_mode == TRANSMISSION_MODE_8K)+1]);
		}
	} else { /* second call, after autosearch (fka: set_WithKnownParams) */
//		dib3000mc_set_timing(state,1,ofdm->transmission_mode,ofdm->bandwidth);

		auto_val = 0;
		dib3000mc_set_general_cfg(state,fep,&auto_val);
		if (auto_val)
			deb_info("auto_val is true, even though an auto search was already performed.\n");

		dib3000mc_set_impulse_noise(state,0,ofdm->constellation,ofdm->bandwidth);

		val = rd(DIB3000MC_REG_DEMOD_PARM);
		wr(DIB3000MC_REG_DEMOD_PARM,val | DIB3000MC_DEMOD_RST_AUTO_SRCH_ON);
		wr(DIB3000MC_REG_DEMOD_PARM,val);

		msleep(30);

		wr(DIB3000MC_REG_ISI,DIB3000MC_ISI_DEFAULT|DIB3000MC_ISI_ACTIVATE);
			dib3000mc_set_adp_cfg(state,ofdm->constellation);
		wr_foreach(dib3000mc_reg_offset,
				dib3000mc_offset[(ofdm->transmission_mode == TRANSMISSION_MODE_8K)+1]);
	}
	return 0;
}

static int dib3000mc_fe_init(struct dvb_frontend* fe, int mobile_mode)
{
	struct dib3000_state *state = fe->demodulator_priv;
	deb_info("init start\n");

	state->timing_offset = 0;
	state->timing_offset_comp_done = 0;

	wr(DIB3000MC_REG_RESTART,DIB3000MC_RESTART_CONFIG);
	wr(DIB3000MC_REG_RESTART,DIB3000MC_RESTART_OFF);
	wr(DIB3000MC_REG_CLK_CFG_1,DIB3000MC_CLK_CFG_1_POWER_UP);
	wr(DIB3000MC_REG_CLK_CFG_2,DIB3000MC_CLK_CFG_2_PUP_MOBILE);
	wr(DIB3000MC_REG_CLK_CFG_3,DIB3000MC_CLK_CFG_3_POWER_UP);
	wr(DIB3000MC_REG_CLK_CFG_7,DIB3000MC_CLK_CFG_7_INIT);

	wr(DIB3000MC_REG_RST_UNC,DIB3000MC_RST_UNC_OFF);
	wr(DIB3000MC_REG_UNK_19,DIB3000MC_UNK_19);

	wr(33,5);
	wr(36,81);
	wr(DIB3000MC_REG_UNK_88,DIB3000MC_UNK_88);

	wr(DIB3000MC_REG_UNK_99,DIB3000MC_UNK_99);
	wr(DIB3000MC_REG_UNK_111,DIB3000MC_UNK_111_PH_N_MODE_0); /* phase noise algo off */

	/* mobile mode - portable reception */
	wr_foreach(dib3000mc_reg_mobile_mode,dib3000mc_mobile_mode[1]);

/* TUNER_PANASONIC_ENV57H12D5: */
	wr_foreach(dib3000mc_reg_agc_bandwidth,dib3000mc_agc_bandwidth);
	wr_foreach(dib3000mc_reg_agc_bandwidth_general,dib3000mc_agc_bandwidth_general);
	wr_foreach(dib3000mc_reg_agc,dib3000mc_agc_tuner[1]);

	wr(DIB3000MC_REG_UNK_110,DIB3000MC_UNK_110);
	wr(26,0x6680);
	wr(DIB3000MC_REG_UNK_1,DIB3000MC_UNK_1);
	wr(DIB3000MC_REG_UNK_2,DIB3000MC_UNK_2);
	wr(DIB3000MC_REG_UNK_3,DIB3000MC_UNK_3);
	wr(DIB3000MC_REG_SEQ_TPS,DIB3000MC_SEQ_TPS_DEFAULT);

	wr_foreach(dib3000mc_reg_bandwidth,dib3000mc_bandwidth_8mhz);
	wr_foreach(dib3000mc_reg_bandwidth_general,dib3000mc_bandwidth_general);

	wr(DIB3000MC_REG_UNK_4,DIB3000MC_UNK_4);

	wr(DIB3000MC_REG_SET_DDS_FREQ_MSB,DIB3000MC_DDS_FREQ_MSB_INV_OFF);
	wr(DIB3000MC_REG_SET_DDS_FREQ_LSB,DIB3000MC_DDS_FREQ_LSB);

	dib3000mc_set_timing(state,0,TRANSMISSION_MODE_8K,BANDWIDTH_8_MHZ);
//	wr_foreach(dib3000mc_reg_timing_freq,dib3000mc_timing_freq[3]);

	wr(DIB3000MC_REG_UNK_120,DIB3000MC_UNK_120);
	wr(DIB3000MC_REG_UNK_134,DIB3000MC_UNK_134);
	wr(DIB3000MC_REG_FEC_CFG,DIB3000MC_FEC_CFG);

	wr(DIB3000MC_REG_DIVERSITY3,DIB3000MC_DIVERSITY3_IN_OFF);

	dib3000mc_set_impulse_noise(state,0,TRANSMISSION_MODE_8K,BANDWIDTH_8_MHZ);

/* output mode control, just the MPEG2_SLAVE */
//	set_or(DIB3000MC_REG_OUTMODE,DIB3000MC_OM_SLAVE);
	wr(DIB3000MC_REG_OUTMODE,DIB3000MC_OM_SLAVE);
	wr(DIB3000MC_REG_SMO_MODE,DIB3000MC_SMO_MODE_SLAVE);
	wr(DIB3000MC_REG_FIFO_THRESHOLD,DIB3000MC_FIFO_THRESHOLD_SLAVE);
	wr(DIB3000MC_REG_ELEC_OUT,DIB3000MC_ELEC_OUT_SLAVE);

/* MPEG2_PARALLEL_CONTINUOUS_CLOCK
	wr(DIB3000MC_REG_OUTMODE,
		DIB3000MC_SET_OUTMODE(DIB3000MC_OM_PAR_CONT_CLK,
			rd(DIB3000MC_REG_OUTMODE)));

	wr(DIB3000MC_REG_SMO_MODE,
			DIB3000MC_SMO_MODE_DEFAULT |
			DIB3000MC_SMO_MODE_188);

	wr(DIB3000MC_REG_FIFO_THRESHOLD,DIB3000MC_FIFO_THRESHOLD_DEFAULT);
	wr(DIB3000MC_REG_ELEC_OUT,DIB3000MC_ELEC_OUT_DIV_OUT_ON);
*/

/* diversity */
	wr(DIB3000MC_REG_DIVERSITY1,DIB3000MC_DIVERSITY1_DEFAULT);
	wr(DIB3000MC_REG_DIVERSITY2,DIB3000MC_DIVERSITY2_DEFAULT);

	set_and(DIB3000MC_REG_DIVERSITY3,DIB3000MC_DIVERSITY3_IN_OFF);

	set_or(DIB3000MC_REG_CLK_CFG_7,DIB3000MC_CLK_CFG_7_DIV_IN_OFF);

	if (state->config.pll_init)
		state->config.pll_init(fe);

	deb_info("init end\n");
	return 0;
}
static int dib3000mc_read_status(struct dvb_frontend* fe, fe_status_t *stat)
{
	struct dib3000_state* state = fe->demodulator_priv;
	u16 lock = rd(DIB3000MC_REG_LOCKING);

	*stat = 0;
	if (DIB3000MC_AGC_LOCK(lock))
		*stat |= FE_HAS_SIGNAL;
	if (DIB3000MC_CARRIER_LOCK(lock))
		*stat |= FE_HAS_CARRIER;
	if (DIB3000MC_TPS_LOCK(lock))
		*stat |= FE_HAS_VITERBI;
	if (DIB3000MC_MPEG_SYNC_LOCK(lock))
		*stat |= (FE_HAS_SYNC | FE_HAS_LOCK);

	deb_stat("actual status is %2x fifo_level: %x,244: %x, 206: %x, 207: %x, 1040: %x\n",*stat,rd(510),rd(244),rd(206),rd(207),rd(1040));

	return 0;
}

static int dib3000mc_read_ber(struct dvb_frontend* fe, u32 *ber)
{
	struct dib3000_state* state = fe->demodulator_priv;
	*ber = ((rd(DIB3000MC_REG_BER_MSB) << 16) | rd(DIB3000MC_REG_BER_LSB));
	return 0;
}

static int dib3000mc_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
{
	struct dib3000_state* state = fe->demodulator_priv;

	*unc = rd(DIB3000MC_REG_PACKET_ERRORS);
	return 0;
}

/* see dib3000mb.c for calculation comments */
static int dib3000mc_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
{
	struct dib3000_state* state = fe->demodulator_priv;
	u16 val = rd(DIB3000MC_REG_SIGNAL_NOISE_LSB);
	*strength = (((val >> 6) & 0xff) << 8) + (val & 0x3f);

	deb_stat("signal: mantisse = %d, exponent = %d\n",(*strength >> 8) & 0xff, *strength & 0xff);
	return 0;
}

/* see dib3000mb.c for calculation comments */
static int dib3000mc_read_snr(struct dvb_frontend* fe, u16 *snr)
{
	struct dib3000_state* state = fe->demodulator_priv;
	u16 val = rd(DIB3000MC_REG_SIGNAL_NOISE_LSB),
		val2 = rd(DIB3000MC_REG_SIGNAL_NOISE_MSB);
	u16 sig,noise;

	sig =   (((val >> 6) & 0xff) << 8) + (val & 0x3f);
	noise = (((val >> 4) & 0xff) << 8) + ((val & 0xf) << 2) + ((val2 >> 14) & 0x3);
	if (noise == 0)
		*snr = 0xffff;
	else
		*snr = (u16) sig/noise;

	deb_stat("signal: mantisse = %d, exponent = %d\n",(sig >> 8) & 0xff, sig & 0xff);
	deb_stat("noise:  mantisse = %d, exponent = %d\n",(noise >> 8) & 0xff, noise & 0xff);
	deb_stat("snr: %d\n",*snr);
	return 0;
}

static int dib3000mc_sleep(struct dvb_frontend* fe)
{
	struct dib3000_state* state = fe->demodulator_priv;

	set_or(DIB3000MC_REG_CLK_CFG_7,DIB3000MC_CLK_CFG_7_PWR_DOWN);
	wr(DIB3000MC_REG_CLK_CFG_1,DIB3000MC_CLK_CFG_1_POWER_DOWN);
	wr(DIB3000MC_REG_CLK_CFG_2,DIB3000MC_CLK_CFG_2_POWER_DOWN);
	wr(DIB3000MC_REG_CLK_CFG_3,DIB3000MC_CLK_CFG_3_POWER_DOWN);
	return 0;
}

static int dib3000mc_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
{
	tune->min_delay_ms = 1000;
	return 0;
}

static int dib3000mc_fe_init_nonmobile(struct dvb_frontend* fe)
{
	return dib3000mc_fe_init(fe, 0);
}

static int dib3000mc_set_frontend_and_tuner(struct dvb_frontend* fe, struct dvb_frontend_parameters *fep)
{
	return dib3000mc_set_frontend(fe, fep, 1);
}

static void dib3000mc_release(struct dvb_frontend* fe)
{
	struct dib3000_state *state = fe->demodulator_priv;
	kfree(state);
}

/* pid filter and transfer stuff */
static int dib3000mc_pid_control(struct dvb_frontend *fe,int index, int pid,int onoff)
{
	struct dib3000_state *state = fe->demodulator_priv;
	pid = (onoff ? pid | DIB3000_ACTIVATE_PID_FILTERING : 0);
	wr(index+DIB3000MC_REG_FIRST_PID,pid);
	return 0;
}

static int dib3000mc_fifo_control(struct dvb_frontend *fe, int onoff)
{
	struct dib3000_state *state = fe->demodulator_priv;
	u16 tmp = rd(DIB3000MC_REG_SMO_MODE);

	deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");

	if (onoff) {
		deb_xfer("%d %x\n",tmp & DIB3000MC_SMO_MODE_FIFO_UNFLUSH,tmp & DIB3000MC_SMO_MODE_FIFO_UNFLUSH);
		wr(DIB3000MC_REG_SMO_MODE,tmp & DIB3000MC_SMO_MODE_FIFO_UNFLUSH);
	} else {
		deb_xfer("%d %x\n",tmp | DIB3000MC_SMO_MODE_FIFO_FLUSH,tmp | DIB3000MC_SMO_MODE_FIFO_FLUSH);
		wr(DIB3000MC_REG_SMO_MODE,tmp | DIB3000MC_SMO_MODE_FIFO_FLUSH);
	}
	return 0;
}

static int dib3000mc_pid_parse(struct dvb_frontend *fe, int onoff)
{
	struct dib3000_state *state = fe->demodulator_priv;
	u16 tmp = rd(DIB3000MC_REG_SMO_MODE);

	deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");

	if (onoff) {
		wr(DIB3000MC_REG_SMO_MODE,tmp | DIB3000MC_SMO_MODE_PID_PARSE);
	} else {
		wr(DIB3000MC_REG_SMO_MODE,tmp & DIB3000MC_SMO_MODE_NO_PID_PARSE);
	}
	return 0;
}

static int dib3000mc_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
{
	struct dib3000_state *state = fe->demodulator_priv;
	if (onoff) {
		wr(DIB3000MC_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
	} else {
		wr(DIB3000MC_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
	}
	return 0;
}

static int dib3000mc_demod_init(struct dib3000_state *state)
{
	u16 default_addr = 0x0a;
	/* first init */
	if (state->config.demod_address != default_addr) {
		deb_info("initializing the demod the first time. Setting demod addr to 0x%x\n",default_addr);
		wr(DIB3000MC_REG_ELEC_OUT,DIB3000MC_ELEC_OUT_DIV_OUT_ON);
		wr(DIB3000MC_REG_OUTMODE,DIB3000MC_OM_PAR_CONT_CLK);

		wr(DIB3000MC_REG_RST_I2C_ADDR,
			DIB3000MC_DEMOD_ADDR(default_addr) |
			DIB3000MC_DEMOD_ADDR_ON);

		state->config.demod_address = default_addr;

		wr(DIB3000MC_REG_RST_I2C_ADDR,
			DIB3000MC_DEMOD_ADDR(default_addr));
	} else
		deb_info("demod is already initialized. Demod addr: 0x%x\n",state->config.demod_address);
	return 0;
}


static struct dvb_frontend_ops dib3000mc_ops;

struct dvb_frontend* dib3000mc_attach(const struct dib3000_config* config,
				      struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
{
	struct dib3000_state* state = NULL;
	u16 devid;

	/* allocate memory for the internal state */
	state = kmalloc(sizeof(struct dib3000_state), GFP_KERNEL);
	if (state == NULL)
		goto error;
	memset(state,0,sizeof(struct dib3000_state));

	/* setup the state */
	state->i2c = i2c;
	memcpy(&state->config,config,sizeof(struct dib3000_config));
	memcpy(&state->ops, &dib3000mc_ops, sizeof(struct dvb_frontend_ops));

	/* check for the correct demod */
	if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
		goto error;

	devid = rd(DIB3000_REG_DEVICE_ID);
	if (devid != DIB3000MC_DEVICE_ID && devid != DIB3000P_DEVICE_ID)
		goto error;

	switch (devid) {
		case DIB3000MC_DEVICE_ID:
			info("Found a DiBcom 3000M-C, interesting...");
			break;
		case DIB3000P_DEVICE_ID:
			info("Found a DiBcom 3000P.");
			break;
	}

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

	/* set the xfer operations */
	xfer_ops->pid_parse = dib3000mc_pid_parse;
	xfer_ops->fifo_ctrl = dib3000mc_fifo_control;
	xfer_ops->pid_ctrl = dib3000mc_pid_control;
	xfer_ops->tuner_pass_ctrl = dib3000mc_tuner_pass_ctrl;

	dib3000mc_demod_init(state);

	return &state->frontend;

error:
	kfree(state);
	return NULL;
}

static struct dvb_frontend_ops dib3000mc_ops = {

	.info = {
		.name			= "DiBcom 3000P/M-C DVB-T",
		.type			= FE_OFDM,
		.frequency_min		= 44250000,
		.frequency_max		= 867250000,
		.frequency_stepsize	= 62500,
		.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 | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
				FE_CAN_TRANSMISSION_MODE_AUTO |
				FE_CAN_GUARD_INTERVAL_AUTO |
				FE_CAN_RECOVER |
				FE_CAN_HIERARCHY_AUTO,
	},

	.release = dib3000mc_release,

	.init = dib3000mc_fe_init_nonmobile,
	.sleep = dib3000mc_sleep,

	.set_frontend = dib3000mc_set_frontend_and_tuner,
	.get_frontend = dib3000mc_get_frontend,
	.get_tune_settings = dib3000mc_fe_get_tune_settings,

	.read_status = dib3000mc_read_status,
	.read_ber = dib3000mc_read_ber,
	.read_signal_strength = dib3000mc_read_signal_strength,
	.read_snr = dib3000mc_read_snr,
	.read_ucblocks = dib3000mc_read_unc_blocks,
};

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");

EXPORT_SYMBOL(dib3000mc_attach);