Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 818 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/dib3000mb.c b/drivers/media/dvb-frontends/dib3000mb.c
new file mode 100644
index 000000000..c598b2a63
--- /dev/null
+++ b/drivers/media/dvb-frontends/dib3000mb.c
@@ -0,0 +1,818 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Frontend driver for mobile DVB-T demodulator DiBcom 3000M-B
+ * DiBcom (http://www.dibcom.fr/)
+ *
+ * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@posteo.de)
+ *
+ * based on GPL code from DibCom, which has
+ *
+ * Copyright (C) 2004 Amaury Demol for DiBcom
+ *
+ * Acknowledgements
+ *
+ *  Amaury Demol from DiBcom for providing specs and driver
+ *  sources, on which this driver (and the dvb-dibusb) are based.
+ *
+ * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include <media/dvb_frontend.h>
+
+#include "dib3000.h"
+#include "dib3000mb_priv.h"
+
+/* Version information */
+#define DRIVER_VERSION "0.1"
+#define DRIVER_DESC "DiBcom 3000M-B DVB-T demodulator"
+#define DRIVER_AUTHOR "Patrick Boettcher, patrick.boettcher@posteo.de"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=info,2=xfer,4=setfe,8=getfe (|-able)).");
+
+#define deb_info(args...) dprintk(0x01, args)
+#define deb_i2c(args...)  dprintk(0x02, args)
+#define deb_srch(args...) dprintk(0x04, args)
+#define deb_info(args...) dprintk(0x01, args)
+#define deb_xfer(args...) dprintk(0x02, args)
+#define deb_setf(args...) dprintk(0x04, args)
+#define deb_getf(args...) dprintk(0x08, args)
+
+static int dib3000_read_reg(struct dib3000_state *state, u16 reg)
+{
+	u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff };
+	u8 rb[2];
+	struct i2c_msg msg[] = {
+		{ .addr = state->config.demod_address, .flags = 0,        .buf = wb, .len = 2 },
+		{ .addr = state->config.demod_address, .flags = I2C_M_RD, .buf = rb, .len = 2 },
+	};
+
+	if (i2c_transfer(state->i2c, msg, 2) != 2)
+		deb_i2c("i2c read error\n");
+
+	deb_i2c("reading i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,
+			(rb[0] << 8) | rb[1],(rb[0] << 8) | rb[1]);
+
+	return (rb[0] << 8) | rb[1];
+}
+
+static int dib3000_write_reg(struct dib3000_state *state, u16 reg, u16 val)
+{
+	u8 b[] = {
+		(reg >> 8) & 0xff, reg & 0xff,
+		(val >> 8) & 0xff, val & 0xff,
+	};
+	struct i2c_msg msg[] = {
+		{ .addr = state->config.demod_address, .flags = 0, .buf = b, .len = 4 }
+	};
+	deb_i2c("writing i2c bus (reg: %5d 0x%04x, val: %5d 0x%04x)\n",reg,reg,val,val);
+
+	return i2c_transfer(state->i2c,msg, 1) != 1 ? -EREMOTEIO : 0;
+}
+
+static int dib3000_search_status(u16 irq,u16 lock)
+{
+	if (irq & 0x02) {
+		if (lock & 0x01) {
+			deb_srch("auto search succeeded\n");
+			return 1; // auto search succeeded
+		} else {
+			deb_srch("auto search not successful\n");
+			return 0; // auto search failed
+		}
+	} else if (irq & 0x01)  {
+		deb_srch("auto search failed\n");
+		return 0; // auto search failed
+	}
+	return -1; // try again
+}
+
+/* for auto search */
+static u16 dib3000_seq[2][2][2] =     /* fft,gua,   inv   */
+	{ /* fft */
+		{ /* gua */
+			{ 0, 1 },                   /*  0   0   { 0,1 } */
+			{ 3, 9 },                   /*  0   1   { 0,1 } */
+		},
+		{
+			{ 2, 5 },                   /*  1   0   { 0,1 } */
+			{ 6, 11 },                  /*  1   1   { 0,1 } */
+		}
+	};
+
+static int dib3000mb_get_frontend(struct dvb_frontend* fe,
+				  struct dtv_frontend_properties *c);
+
+static int dib3000mb_set_frontend(struct dvb_frontend *fe, int tuner)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	enum fe_code_rate fe_cr = FEC_NONE;
+	int search_state, seq;
+
+	if (tuner && fe->ops.tuner_ops.set_params) {
+		fe->ops.tuner_ops.set_params(fe);
+		if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
+
+		switch (c->bandwidth_hz) {
+			case 8000000:
+				wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
+				wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
+				break;
+			case 7000000:
+				wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[1]);
+				wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_7mhz);
+				break;
+			case 6000000:
+				wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[0]);
+				wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_6mhz);
+				break;
+			case 0:
+				return -EOPNOTSUPP;
+			default:
+				pr_err("unknown bandwidth value.\n");
+				return -EINVAL;
+		}
+		deb_setf("bandwidth: %d MHZ\n", c->bandwidth_hz / 1000000);
+	}
+	wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
+
+	switch (c->transmission_mode) {
+		case TRANSMISSION_MODE_2K:
+			deb_setf("transmission mode: 2k\n");
+			wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_2K);
+			break;
+		case TRANSMISSION_MODE_8K:
+			deb_setf("transmission mode: 8k\n");
+			wr(DIB3000MB_REG_FFT, DIB3000_TRANSMISSION_MODE_8K);
+			break;
+		case TRANSMISSION_MODE_AUTO:
+			deb_setf("transmission mode: auto\n");
+			break;
+		default:
+			return -EINVAL;
+	}
+
+	switch (c->guard_interval) {
+		case GUARD_INTERVAL_1_32:
+			deb_setf("guard 1_32\n");
+			wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_32);
+			break;
+		case GUARD_INTERVAL_1_16:
+			deb_setf("guard 1_16\n");
+			wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_16);
+			break;
+		case GUARD_INTERVAL_1_8:
+			deb_setf("guard 1_8\n");
+			wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_8);
+			break;
+		case GUARD_INTERVAL_1_4:
+			deb_setf("guard 1_4\n");
+			wr(DIB3000MB_REG_GUARD_TIME, DIB3000_GUARD_TIME_1_4);
+			break;
+		case GUARD_INTERVAL_AUTO:
+			deb_setf("guard auto\n");
+			break;
+		default:
+			return -EINVAL;
+	}
+
+	switch (c->inversion) {
+		case INVERSION_OFF:
+			deb_setf("inversion off\n");
+			wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_OFF);
+			break;
+		case INVERSION_AUTO:
+			deb_setf("inversion auto\n");
+			break;
+		case INVERSION_ON:
+			deb_setf("inversion on\n");
+			wr(DIB3000MB_REG_DDS_INV, DIB3000_DDS_INVERSION_ON);
+			break;
+		default:
+			return -EINVAL;
+	}
+
+	switch (c->modulation) {
+		case QPSK:
+			deb_setf("modulation: qpsk\n");
+			wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_QPSK);
+			break;
+		case QAM_16:
+			deb_setf("modulation: qam16\n");
+			wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_16QAM);
+			break;
+		case QAM_64:
+			deb_setf("modulation: qam64\n");
+			wr(DIB3000MB_REG_QAM, DIB3000_CONSTELLATION_64QAM);
+			break;
+		case QAM_AUTO:
+			break;
+		default:
+			return -EINVAL;
+	}
+	switch (c->hierarchy) {
+		case HIERARCHY_NONE:
+			deb_setf("hierarchy: none\n");
+			fallthrough;
+		case HIERARCHY_1:
+			deb_setf("hierarchy: alpha=1\n");
+			wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_1);
+			break;
+		case HIERARCHY_2:
+			deb_setf("hierarchy: alpha=2\n");
+			wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_2);
+			break;
+		case HIERARCHY_4:
+			deb_setf("hierarchy: alpha=4\n");
+			wr(DIB3000MB_REG_VIT_ALPHA, DIB3000_ALPHA_4);
+			break;
+		case HIERARCHY_AUTO:
+			deb_setf("hierarchy: alpha=auto\n");
+			break;
+		default:
+			return -EINVAL;
+	}
+
+	if (c->hierarchy == HIERARCHY_NONE) {
+		wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_OFF);
+		wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_HP);
+		fe_cr = c->code_rate_HP;
+	} else if (c->hierarchy != HIERARCHY_AUTO) {
+		wr(DIB3000MB_REG_VIT_HRCH, DIB3000_HRCH_ON);
+		wr(DIB3000MB_REG_VIT_HP, DIB3000_SELECT_LP);
+		fe_cr = c->code_rate_LP;
+	}
+	switch (fe_cr) {
+		case FEC_1_2:
+			deb_setf("fec: 1_2\n");
+			wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_1_2);
+			break;
+		case FEC_2_3:
+			deb_setf("fec: 2_3\n");
+			wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_2_3);
+			break;
+		case FEC_3_4:
+			deb_setf("fec: 3_4\n");
+			wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_3_4);
+			break;
+		case FEC_5_6:
+			deb_setf("fec: 5_6\n");
+			wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_5_6);
+			break;
+		case FEC_7_8:
+			deb_setf("fec: 7_8\n");
+			wr(DIB3000MB_REG_VIT_CODE_RATE, DIB3000_FEC_7_8);
+			break;
+		case FEC_NONE:
+			deb_setf("fec: none\n");
+			break;
+		case FEC_AUTO:
+			deb_setf("fec: auto\n");
+			break;
+		default:
+			return -EINVAL;
+	}
+
+	seq = dib3000_seq
+		[c->transmission_mode == TRANSMISSION_MODE_AUTO]
+		[c->guard_interval == GUARD_INTERVAL_AUTO]
+		[c->inversion == INVERSION_AUTO];
+
+	deb_setf("seq? %d\n", seq);
+
+	wr(DIB3000MB_REG_SEQ, seq);
+
+	wr(DIB3000MB_REG_ISI, seq ? DIB3000MB_ISI_INHIBIT : DIB3000MB_ISI_ACTIVATE);
+
+	if (c->transmission_mode == TRANSMISSION_MODE_2K) {
+		if (c->guard_interval == GUARD_INTERVAL_1_8) {
+			wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_2K_1_8);
+		} else {
+			wr(DIB3000MB_REG_SYNC_IMPROVEMENT, DIB3000MB_SYNC_IMPROVE_DEFAULT);
+		}
+
+		wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_2K);
+	} else {
+		wr(DIB3000MB_REG_UNK_121, DIB3000MB_UNK_121_DEFAULT);
+	}
+
+	wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_OFF);
+	wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
+	wr(DIB3000MB_REG_MOBILE_MODE, DIB3000MB_MOBILE_MODE_OFF);
+
+	wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_high);
+
+	wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_ACTIVATE);
+
+	wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC + DIB3000MB_RESTART_CTRL);
+	wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
+
+	/* wait for AGC lock */
+	msleep(70);
+
+	wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
+
+	/* something has to be auto searched */
+	if (c->modulation == QAM_AUTO ||
+		c->hierarchy == HIERARCHY_AUTO ||
+		fe_cr == FEC_AUTO ||
+		c->inversion == INVERSION_AUTO) {
+		int as_count=0;
+
+		deb_setf("autosearch enabled.\n");
+
+		wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
+
+		wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AUTO_SEARCH);
+		wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
+
+		while ((search_state =
+				dib3000_search_status(
+					rd(DIB3000MB_REG_AS_IRQ_PENDING),
+					rd(DIB3000MB_REG_LOCK2_VALUE))) < 0 && as_count++ < 100)
+			msleep(1);
+
+		deb_setf("search_state after autosearch %d after %d checks\n",
+			 search_state, as_count);
+
+		if (search_state == 1) {
+			if (dib3000mb_get_frontend(fe, c) == 0) {
+				deb_setf("reading tuning data from frontend succeeded.\n");
+				return dib3000mb_set_frontend(fe, 0);
+			}
+		}
+
+	} else {
+		wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_CTRL);
+		wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_OFF);
+	}
+
+	return 0;
+}
+
+static int dib3000mb_fe_init(struct dvb_frontend* fe, int mobile_mode)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+
+	deb_info("dib3000mb is getting up.\n");
+	wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_UP);
+
+	wr(DIB3000MB_REG_RESTART, DIB3000MB_RESTART_AGC);
+
+	wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE);
+	wr(DIB3000MB_REG_RESET_DEVICE, DIB3000MB_RESET_DEVICE_RST);
+
+	wr(DIB3000MB_REG_CLOCK, DIB3000MB_CLOCK_DEFAULT);
+
+	wr(DIB3000MB_REG_ELECT_OUT_MODE, DIB3000MB_ELECT_OUT_MODE_ON);
+
+	wr(DIB3000MB_REG_DDS_FREQ_MSB, DIB3000MB_DDS_FREQ_MSB);
+	wr(DIB3000MB_REG_DDS_FREQ_LSB, DIB3000MB_DDS_FREQ_LSB);
+
+	wr_foreach(dib3000mb_reg_timing_freq, dib3000mb_timing_freq[2]);
+
+	wr_foreach(dib3000mb_reg_impulse_noise,
+			dib3000mb_impulse_noise_values[DIB3000MB_IMPNOISE_OFF]);
+
+	wr_foreach(dib3000mb_reg_agc_gain, dib3000mb_default_agc_gain);
+
+	wr(DIB3000MB_REG_PHASE_NOISE, DIB3000MB_PHASE_NOISE_DEFAULT);
+
+	wr_foreach(dib3000mb_reg_phase_noise, dib3000mb_default_noise_phase);
+
+	wr_foreach(dib3000mb_reg_lock_duration, dib3000mb_default_lock_duration);
+
+	wr_foreach(dib3000mb_reg_agc_bandwidth, dib3000mb_agc_bandwidth_low);
+
+	wr(DIB3000MB_REG_LOCK0_MASK, DIB3000MB_LOCK0_DEFAULT);
+	wr(DIB3000MB_REG_LOCK1_MASK, DIB3000MB_LOCK1_SEARCH_4);
+	wr(DIB3000MB_REG_LOCK2_MASK, DIB3000MB_LOCK2_DEFAULT);
+	wr(DIB3000MB_REG_SEQ, dib3000_seq[1][1][1]);
+
+	wr_foreach(dib3000mb_reg_bandwidth, dib3000mb_bandwidth_8mhz);
+
+	wr(DIB3000MB_REG_UNK_68, DIB3000MB_UNK_68);
+	wr(DIB3000MB_REG_UNK_69, DIB3000MB_UNK_69);
+	wr(DIB3000MB_REG_UNK_71, DIB3000MB_UNK_71);
+	wr(DIB3000MB_REG_UNK_77, DIB3000MB_UNK_77);
+	wr(DIB3000MB_REG_UNK_78, DIB3000MB_UNK_78);
+	wr(DIB3000MB_REG_ISI, DIB3000MB_ISI_INHIBIT);
+	wr(DIB3000MB_REG_UNK_92, DIB3000MB_UNK_92);
+	wr(DIB3000MB_REG_UNK_96, DIB3000MB_UNK_96);
+	wr(DIB3000MB_REG_UNK_97, DIB3000MB_UNK_97);
+	wr(DIB3000MB_REG_UNK_106, DIB3000MB_UNK_106);
+	wr(DIB3000MB_REG_UNK_107, DIB3000MB_UNK_107);
+	wr(DIB3000MB_REG_UNK_108, DIB3000MB_UNK_108);
+	wr(DIB3000MB_REG_UNK_122, DIB3000MB_UNK_122);
+	wr(DIB3000MB_REG_MOBILE_MODE_QAM, DIB3000MB_MOBILE_MODE_QAM_OFF);
+	wr(DIB3000MB_REG_BERLEN, DIB3000MB_BERLEN_DEFAULT);
+
+	wr_foreach(dib3000mb_reg_filter_coeffs, dib3000mb_filter_coeffs);
+
+	wr(DIB3000MB_REG_MOBILE_ALGO, DIB3000MB_MOBILE_ALGO_ON);
+	wr(DIB3000MB_REG_MULTI_DEMOD_MSB, DIB3000MB_MULTI_DEMOD_MSB);
+	wr(DIB3000MB_REG_MULTI_DEMOD_LSB, DIB3000MB_MULTI_DEMOD_LSB);
+
+	wr(DIB3000MB_REG_OUTPUT_MODE, DIB3000MB_OUTPUT_MODE_SLAVE);
+
+	wr(DIB3000MB_REG_FIFO_142, DIB3000MB_FIFO_142);
+	wr(DIB3000MB_REG_MPEG2_OUT_MODE, DIB3000MB_MPEG2_OUT_MODE_188);
+	wr(DIB3000MB_REG_PID_PARSE, DIB3000MB_PID_PARSE_ACTIVATE);
+	wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
+	wr(DIB3000MB_REG_FIFO_146, DIB3000MB_FIFO_146);
+	wr(DIB3000MB_REG_FIFO_147, DIB3000MB_FIFO_147);
+
+	wr(DIB3000MB_REG_DATA_IN_DIVERSITY, DIB3000MB_DATA_DIVERSITY_IN_OFF);
+
+	return 0;
+}
+
+static int dib3000mb_get_frontend(struct dvb_frontend* fe,
+				  struct dtv_frontend_properties *c)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+	enum fe_code_rate *cr;
+	u16 tps_val;
+	int inv_test1,inv_test2;
+	u32 dds_val, threshold = 0x800000;
+
+	if (!rd(DIB3000MB_REG_TPS_LOCK))
+		return 0;
+
+	dds_val = ((rd(DIB3000MB_REG_DDS_VALUE_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_VALUE_LSB);
+	deb_getf("DDS_VAL: %x %x %x\n", dds_val, rd(DIB3000MB_REG_DDS_VALUE_MSB), rd(DIB3000MB_REG_DDS_VALUE_LSB));
+	if (dds_val < threshold)
+		inv_test1 = 0;
+	else if (dds_val == threshold)
+		inv_test1 = 1;
+	else
+		inv_test1 = 2;
+
+	dds_val = ((rd(DIB3000MB_REG_DDS_FREQ_MSB) & 0xff) << 16) + rd(DIB3000MB_REG_DDS_FREQ_LSB);
+	deb_getf("DDS_FREQ: %x %x %x\n", dds_val, rd(DIB3000MB_REG_DDS_FREQ_MSB), rd(DIB3000MB_REG_DDS_FREQ_LSB));
+	if (dds_val < threshold)
+		inv_test2 = 0;
+	else if (dds_val == threshold)
+		inv_test2 = 1;
+	else
+		inv_test2 = 2;
+
+	c->inversion =
+		((inv_test2 == 2) && (inv_test1==1 || inv_test1==0)) ||
+		((inv_test2 == 0) && (inv_test1==1 || inv_test1==2)) ?
+		INVERSION_ON : INVERSION_OFF;
+
+	deb_getf("inversion %d %d, %d\n", inv_test2, inv_test1, c->inversion);
+
+	switch ((tps_val = rd(DIB3000MB_REG_TPS_QAM))) {
+		case DIB3000_CONSTELLATION_QPSK:
+			deb_getf("QPSK\n");
+			c->modulation = QPSK;
+			break;
+		case DIB3000_CONSTELLATION_16QAM:
+			deb_getf("QAM16\n");
+			c->modulation = QAM_16;
+			break;
+		case DIB3000_CONSTELLATION_64QAM:
+			deb_getf("QAM64\n");
+			c->modulation = QAM_64;
+			break;
+		default:
+			pr_err("Unexpected constellation returned by TPS (%d)\n", tps_val);
+			break;
+	}
+	deb_getf("TPS: %d\n", tps_val);
+
+	if (rd(DIB3000MB_REG_TPS_HRCH)) {
+		deb_getf("HRCH ON\n");
+		cr = &c->code_rate_LP;
+		c->code_rate_HP = FEC_NONE;
+		switch ((tps_val = rd(DIB3000MB_REG_TPS_VIT_ALPHA))) {
+			case DIB3000_ALPHA_0:
+				deb_getf("HIERARCHY_NONE\n");
+				c->hierarchy = HIERARCHY_NONE;
+				break;
+			case DIB3000_ALPHA_1:
+				deb_getf("HIERARCHY_1\n");
+				c->hierarchy = HIERARCHY_1;
+				break;
+			case DIB3000_ALPHA_2:
+				deb_getf("HIERARCHY_2\n");
+				c->hierarchy = HIERARCHY_2;
+				break;
+			case DIB3000_ALPHA_4:
+				deb_getf("HIERARCHY_4\n");
+				c->hierarchy = HIERARCHY_4;
+				break;
+			default:
+				pr_err("Unexpected ALPHA value returned by TPS (%d)\n", tps_val);
+				break;
+		}
+		deb_getf("TPS: %d\n", tps_val);
+
+		tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_LP);
+	} else {
+		deb_getf("HRCH OFF\n");
+		cr = &c->code_rate_HP;
+		c->code_rate_LP = FEC_NONE;
+		c->hierarchy = HIERARCHY_NONE;
+
+		tps_val = rd(DIB3000MB_REG_TPS_CODE_RATE_HP);
+	}
+
+	switch (tps_val) {
+		case DIB3000_FEC_1_2:
+			deb_getf("FEC_1_2\n");
+			*cr = FEC_1_2;
+			break;
+		case DIB3000_FEC_2_3:
+			deb_getf("FEC_2_3\n");
+			*cr = FEC_2_3;
+			break;
+		case DIB3000_FEC_3_4:
+			deb_getf("FEC_3_4\n");
+			*cr = FEC_3_4;
+			break;
+		case DIB3000_FEC_5_6:
+			deb_getf("FEC_5_6\n");
+			*cr = FEC_4_5;
+			break;
+		case DIB3000_FEC_7_8:
+			deb_getf("FEC_7_8\n");
+			*cr = FEC_7_8;
+			break;
+		default:
+			pr_err("Unexpected FEC returned by TPS (%d)\n", tps_val);
+			break;
+	}
+	deb_getf("TPS: %d\n",tps_val);
+
+	switch ((tps_val = rd(DIB3000MB_REG_TPS_GUARD_TIME))) {
+		case DIB3000_GUARD_TIME_1_32:
+			deb_getf("GUARD_INTERVAL_1_32\n");
+			c->guard_interval = GUARD_INTERVAL_1_32;
+			break;
+		case DIB3000_GUARD_TIME_1_16:
+			deb_getf("GUARD_INTERVAL_1_16\n");
+			c->guard_interval = GUARD_INTERVAL_1_16;
+			break;
+		case DIB3000_GUARD_TIME_1_8:
+			deb_getf("GUARD_INTERVAL_1_8\n");
+			c->guard_interval = GUARD_INTERVAL_1_8;
+			break;
+		case DIB3000_GUARD_TIME_1_4:
+			deb_getf("GUARD_INTERVAL_1_4\n");
+			c->guard_interval = GUARD_INTERVAL_1_4;
+			break;
+		default:
+			pr_err("Unexpected Guard Time returned by TPS (%d)\n", tps_val);
+			break;
+	}
+	deb_getf("TPS: %d\n", tps_val);
+
+	switch ((tps_val = rd(DIB3000MB_REG_TPS_FFT))) {
+		case DIB3000_TRANSMISSION_MODE_2K:
+			deb_getf("TRANSMISSION_MODE_2K\n");
+			c->transmission_mode = TRANSMISSION_MODE_2K;
+			break;
+		case DIB3000_TRANSMISSION_MODE_8K:
+			deb_getf("TRANSMISSION_MODE_8K\n");
+			c->transmission_mode = TRANSMISSION_MODE_8K;
+			break;
+		default:
+			pr_err("unexpected transmission mode return by TPS (%d)\n", tps_val);
+			break;
+	}
+	deb_getf("TPS: %d\n", tps_val);
+
+	return 0;
+}
+
+static int dib3000mb_read_status(struct dvb_frontend *fe,
+				 enum fe_status *stat)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+
+	*stat = 0;
+
+	if (rd(DIB3000MB_REG_AGC_LOCK))
+		*stat |= FE_HAS_SIGNAL;
+	if (rd(DIB3000MB_REG_CARRIER_LOCK))
+		*stat |= FE_HAS_CARRIER;
+	if (rd(DIB3000MB_REG_VIT_LCK))
+		*stat |= FE_HAS_VITERBI;
+	if (rd(DIB3000MB_REG_TS_SYNC_LOCK))
+		*stat |= (FE_HAS_SYNC | FE_HAS_LOCK);
+
+	deb_getf("actual status is %2x\n",*stat);
+
+	deb_getf("autoval: tps: %d, qam: %d, hrch: %d, alpha: %d, hp: %d, lp: %d, guard: %d, fft: %d cell: %d\n",
+			rd(DIB3000MB_REG_TPS_LOCK),
+			rd(DIB3000MB_REG_TPS_QAM),
+			rd(DIB3000MB_REG_TPS_HRCH),
+			rd(DIB3000MB_REG_TPS_VIT_ALPHA),
+			rd(DIB3000MB_REG_TPS_CODE_RATE_HP),
+			rd(DIB3000MB_REG_TPS_CODE_RATE_LP),
+			rd(DIB3000MB_REG_TPS_GUARD_TIME),
+			rd(DIB3000MB_REG_TPS_FFT),
+			rd(DIB3000MB_REG_TPS_CELL_ID));
+
+	//*stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+	return 0;
+}
+
+static int dib3000mb_read_ber(struct dvb_frontend* fe, u32 *ber)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+
+	*ber = ((rd(DIB3000MB_REG_BER_MSB) << 16) | rd(DIB3000MB_REG_BER_LSB));
+	return 0;
+}
+
+/* see dib3000-watch dvb-apps for exact calcuations of signal_strength and snr */
+static int dib3000mb_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+
+	*strength = rd(DIB3000MB_REG_SIGNAL_POWER) * 0xffff / 0x170;
+	return 0;
+}
+
+static int dib3000mb_read_snr(struct dvb_frontend* fe, u16 *snr)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+	short sigpow = rd(DIB3000MB_REG_SIGNAL_POWER);
+	int icipow = ((rd(DIB3000MB_REG_NOISE_POWER_MSB) & 0xff) << 16) |
+		rd(DIB3000MB_REG_NOISE_POWER_LSB);
+	*snr = (sigpow << 8) / ((icipow > 0) ? icipow : 1);
+	return 0;
+}
+
+static int dib3000mb_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+
+	*unc = rd(DIB3000MB_REG_PACKET_ERROR_RATE);
+	return 0;
+}
+
+static int dib3000mb_sleep(struct dvb_frontend* fe)
+{
+	struct dib3000_state* state = fe->demodulator_priv;
+	deb_info("dib3000mb is going to bed.\n");
+	wr(DIB3000MB_REG_POWER_CONTROL, DIB3000MB_POWER_DOWN);
+	return 0;
+}
+
+static int dib3000mb_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
+{
+	tune->min_delay_ms = 800;
+	return 0;
+}
+
+static int dib3000mb_fe_init_nonmobile(struct dvb_frontend* fe)
+{
+	return dib3000mb_fe_init(fe, 0);
+}
+
+static int dib3000mb_set_frontend_and_tuner(struct dvb_frontend *fe)
+{
+	return dib3000mb_set_frontend(fe, 1);
+}
+
+static void dib3000mb_release(struct dvb_frontend* fe)
+{
+	struct dib3000_state *state = fe->demodulator_priv;
+	kfree(state);
+}
+
+/* pid filter and transfer stuff */
+static int dib3000mb_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+DIB3000MB_REG_FIRST_PID,pid);
+	return 0;
+}
+
+static int dib3000mb_fifo_control(struct dvb_frontend *fe, int onoff)
+{
+	struct dib3000_state *state = fe->demodulator_priv;
+
+	deb_xfer("%s fifo\n",onoff ? "enabling" : "disabling");
+	if (onoff) {
+		wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_ACTIVATE);
+	} else {
+		wr(DIB3000MB_REG_FIFO, DIB3000MB_FIFO_INHIBIT);
+	}
+	return 0;
+}
+
+static int dib3000mb_pid_parse(struct dvb_frontend *fe, int onoff)
+{
+	struct dib3000_state *state = fe->demodulator_priv;
+	deb_xfer("%s pid parsing\n",onoff ? "enabling" : "disabling");
+	wr(DIB3000MB_REG_PID_PARSE,onoff);
+	return 0;
+}
+
+static int dib3000mb_tuner_pass_ctrl(struct dvb_frontend *fe, int onoff, u8 pll_addr)
+{
+	struct dib3000_state *state = fe->demodulator_priv;
+	if (onoff) {
+		wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_ENABLE(pll_addr));
+	} else {
+		wr(DIB3000MB_REG_TUNER, DIB3000_TUNER_WRITE_DISABLE(pll_addr));
+	}
+	return 0;
+}
+
+static const struct dvb_frontend_ops dib3000mb_ops;
+
+struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
+				      struct i2c_adapter* i2c, struct dib_fe_xfer_ops *xfer_ops)
+{
+	struct dib3000_state* state = NULL;
+
+	/* allocate memory for the internal state */
+	state = kzalloc(sizeof(struct dib3000_state), GFP_KERNEL);
+	if (state == NULL)
+		goto error;
+
+	/* setup the state */
+	state->i2c = i2c;
+	memcpy(&state->config,config,sizeof(struct dib3000_config));
+
+	/* check for the correct demod */
+	if (rd(DIB3000_REG_MANUFACTOR_ID) != DIB3000_I2C_ID_DIBCOM)
+		goto error;
+
+	if (rd(DIB3000_REG_DEVICE_ID) != DIB3000MB_DEVICE_ID)
+		goto error;
+
+	/* create dvb_frontend */
+	memcpy(&state->frontend.ops, &dib3000mb_ops, sizeof(struct dvb_frontend_ops));
+	state->frontend.demodulator_priv = state;
+
+	/* set the xfer operations */
+	xfer_ops->pid_parse = dib3000mb_pid_parse;
+	xfer_ops->fifo_ctrl = dib3000mb_fifo_control;
+	xfer_ops->pid_ctrl = dib3000mb_pid_control;
+	xfer_ops->tuner_pass_ctrl = dib3000mb_tuner_pass_ctrl;
+
+	return &state->frontend;
+
+error:
+	kfree(state);
+	return NULL;
+}
+
+static const struct dvb_frontend_ops dib3000mb_ops = {
+	.delsys = { SYS_DVBT },
+	.info = {
+		.name			= "DiBcom 3000M-B DVB-T",
+		.frequency_min_hz	=  44250 * kHz,
+		.frequency_max_hz	= 867250 * kHz,
+		.frequency_stepsize_hz	= 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 = dib3000mb_release,
+
+	.init = dib3000mb_fe_init_nonmobile,
+	.sleep = dib3000mb_sleep,
+
+	.set_frontend = dib3000mb_set_frontend_and_tuner,
+	.get_frontend = dib3000mb_get_frontend,
+	.get_tune_settings = dib3000mb_fe_get_tune_settings,
+
+	.read_status = dib3000mb_read_status,
+	.read_ber = dib3000mb_read_ber,
+	.read_signal_strength = dib3000mb_read_signal_strength,
+	.read_snr = dib3000mb_read_snr,
+	.read_ucblocks = dib3000mb_read_unc_blocks,
+};
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL_GPL(dib3000mb_attach);