drivers/media/dvb/frontends/drxk_hard.c

/*
 * drxk_hard: DRX-K DVB-C/T demodulator driver
 *
 * Copyright (C) 2010-2011 Digital Devices GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 only, as published by the Free Software Foundation.
 *
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/version.h>
#include <asm/div64.h>

#include "dvb_frontend.h"
#include "drxk.h"
#include "drxk_hard.h"

static int PowerDownDVBT(struct drxk_state *state, bool setPowerMode);
static int PowerDownQAM(struct drxk_state *state);
static int SetDVBTStandard(struct drxk_state *state,
			   enum OperationMode oMode);
static int SetQAMStandard(struct drxk_state *state,
			  enum OperationMode oMode);
static int SetQAM(struct drxk_state *state, u16 IntermediateFreqkHz,
		  s32 tunerFreqOffset);
static int SetDVBTStandard(struct drxk_state *state,
			   enum OperationMode oMode);
static int DVBTStart(struct drxk_state *state);
static int SetDVBT(struct drxk_state *state, u16 IntermediateFreqkHz,
		   s32 tunerFreqOffset);
static int GetQAMLockStatus(struct drxk_state *state, u32 *pLockStatus);
static int GetDVBTLockStatus(struct drxk_state *state, u32 *pLockStatus);
static int SwitchAntennaToQAM(struct drxk_state *state);
static int SwitchAntennaToDVBT(struct drxk_state *state);

static bool IsDVBT(struct drxk_state *state)
{
	return state->m_OperationMode == OM_DVBT;
}

static bool IsQAM(struct drxk_state *state)
{
	return state->m_OperationMode == OM_QAM_ITU_A ||
	    state->m_OperationMode == OM_QAM_ITU_B ||
	    state->m_OperationMode == OM_QAM_ITU_C;
}

bool IsA1WithPatchCode(struct drxk_state *state)
{
	return state->m_DRXK_A1_PATCH_CODE;
}

bool IsA1WithRomCode(struct drxk_state *state)
{
	return state->m_DRXK_A1_ROM_CODE;
}

#define NOA1ROM 0

#define DRXDAP_FASI_SHORT_FORMAT(addr) (((addr) & 0xFC30FF80) == 0)
#define DRXDAP_FASI_LONG_FORMAT(addr)  (((addr) & 0xFC30FF80) != 0)

#define DEFAULT_MER_83  165
#define DEFAULT_MER_93  250

#ifndef DRXK_MPEG_SERIAL_OUTPUT_PIN_DRIVE_STRENGTH
#define DRXK_MPEG_SERIAL_OUTPUT_PIN_DRIVE_STRENGTH (0x02)
#endif

#ifndef DRXK_MPEG_PARALLEL_OUTPUT_PIN_DRIVE_STRENGTH
#define DRXK_MPEG_PARALLEL_OUTPUT_PIN_DRIVE_STRENGTH (0x03)
#endif

#ifndef DRXK_MPEG_OUTPUT_CLK_DRIVE_STRENGTH
#define DRXK_MPEG_OUTPUT_CLK_DRIVE_STRENGTH (0x06)
#endif

#define DEFAULT_DRXK_MPEG_LOCK_TIMEOUT 700
#define DEFAULT_DRXK_DEMOD_LOCK_TIMEOUT 500

#ifndef DRXK_KI_RAGC_ATV
#define DRXK_KI_RAGC_ATV   4
#endif
#ifndef DRXK_KI_IAGC_ATV
#define DRXK_KI_IAGC_ATV   6
#endif
#ifndef DRXK_KI_DAGC_ATV
#define DRXK_KI_DAGC_ATV   7
#endif

#ifndef DRXK_KI_RAGC_QAM
#define DRXK_KI_RAGC_QAM   3
#endif
#ifndef DRXK_KI_IAGC_QAM
#define DRXK_KI_IAGC_QAM   4
#endif
#ifndef DRXK_KI_DAGC_QAM
#define DRXK_KI_DAGC_QAM   7
#endif
#ifndef DRXK_KI_RAGC_DVBT
#define DRXK_KI_RAGC_DVBT  (IsA1WithPatchCode(state) ? 3 : 2)
#endif
#ifndef DRXK_KI_IAGC_DVBT
#define DRXK_KI_IAGC_DVBT  (IsA1WithPatchCode(state) ? 4 : 2)
#endif
#ifndef DRXK_KI_DAGC_DVBT
#define DRXK_KI_DAGC_DVBT  (IsA1WithPatchCode(state) ? 10 : 7)
#endif

#ifndef DRXK_AGC_DAC_OFFSET
#define DRXK_AGC_DAC_OFFSET (0x800)
#endif

#ifndef DRXK_BANDWIDTH_8MHZ_IN_HZ
#define DRXK_BANDWIDTH_8MHZ_IN_HZ  (0x8B8249L)
#endif

#ifndef DRXK_BANDWIDTH_7MHZ_IN_HZ
#define DRXK_BANDWIDTH_7MHZ_IN_HZ  (0x7A1200L)
#endif

#ifndef DRXK_BANDWIDTH_6MHZ_IN_HZ
#define DRXK_BANDWIDTH_6MHZ_IN_HZ  (0x68A1B6L)
#endif

#ifndef DRXK_QAM_SYMBOLRATE_MAX
#define DRXK_QAM_SYMBOLRATE_MAX         (7233000)
#endif

#define DRXK_BL_ROM_OFFSET_TAPS_DVBT    56
#define DRXK_BL_ROM_OFFSET_TAPS_ITU_A   64
#define DRXK_BL_ROM_OFFSET_TAPS_ITU_C   0x5FE0
#define DRXK_BL_ROM_OFFSET_TAPS_BG      24
#define DRXK_BL_ROM_OFFSET_TAPS_DKILLP  32
#define DRXK_BL_ROM_OFFSET_TAPS_NTSC    40
#define DRXK_BL_ROM_OFFSET_TAPS_FM      48
#define DRXK_BL_ROM_OFFSET_UCODE        0

#define DRXK_BLC_TIMEOUT                100

#define DRXK_BLCC_NR_ELEMENTS_TAPS      2
#define DRXK_BLCC_NR_ELEMENTS_UCODE     6

#define DRXK_BLDC_NR_ELEMENTS_TAPS      28

#ifndef DRXK_OFDM_NE_NOTCH_WIDTH
#define DRXK_OFDM_NE_NOTCH_WIDTH             (4)
#endif

#define DRXK_QAM_SL_SIG_POWER_QAM16       (40960)
#define DRXK_QAM_SL_SIG_POWER_QAM32       (20480)
#define DRXK_QAM_SL_SIG_POWER_QAM64       (43008)
#define DRXK_QAM_SL_SIG_POWER_QAM128      (20992)
#define DRXK_QAM_SL_SIG_POWER_QAM256      (43520)

static inline u32 MulDiv32(u32 a, u32 b, u32 c)
{
	u64 tmp64;

	tmp64 = (u64) a * (u64) b;
	do_div(tmp64, c);

	return (u32) tmp64;
}

inline u32 Frac28a(u32 a, u32 c)
{
	int i = 0;
	u32 Q1 = 0;
	u32 R0 = 0;

	R0 = (a % c) << 4;	/* 32-28 == 4 shifts possible at max */
	Q1 = a / c;		/* integer part, only the 4 least significant bits
				   will be visible in the result */

	/* division using radix 16, 7 nibbles in the result */
	for (i = 0; i < 7; i++) {
		Q1 = (Q1 << 4) | (R0 / c);
		R0 = (R0 % c) << 4;
	}
	/* rounding */
	if ((R0 >> 3) >= c)
		Q1++;

	return Q1;
}

static u32 Log10Times100(u32 x)
{
	static const u8 scale = 15;
	static const u8 indexWidth = 5;
	u8 i = 0;
	u32 y = 0;
	u32 d = 0;
	u32 k = 0;
	u32 r = 0;
	/*
	   log2lut[n] = (1<<scale) * 200 * log2(1.0 + ((1.0/(1<<INDEXWIDTH)) * n))
	   0 <= n < ((1<<INDEXWIDTH)+1)
	 */

	static const u32 log2lut[] = {
		0,		/* 0.000000 */
		290941,		/* 290941.300628 */
		573196,		/* 573196.476418 */
		847269,		/* 847269.179851 */
		1113620,	/* 1113620.489452 */
		1372674,	/* 1372673.576986 */
		1624818,	/* 1624817.752104 */
		1870412,	/* 1870411.981536 */
		2109788,	/* 2109787.962654 */
		2343253,	/* 2343252.817465 */
		2571091,	/* 2571091.461923 */
		2793569,	/* 2793568.696416 */
		3010931,	/* 3010931.055901 */
		3223408,	/* 3223408.452106 */
		3431216,	/* 3431215.635215 */
		3634553,	/* 3634553.498355 */
		3833610,	/* 3833610.244726 */
		4028562,	/* 4028562.434393 */
		4219576,	/* 4219575.925308 */
		4406807,	/* 4406806.721144 */
		4590402,	/* 4590401.736809 */
		4770499,	/* 4770499.491025 */
		4947231,	/* 4947230.734179 */
		5120719,	/* 5120719.018555 */
		5291081,	/* 5291081.217197 */
		5458428,	/* 5458427.996830 */
		5622864,	/* 5622864.249668 */
		5784489,	/* 5784489.488298 */
		5943398,	/* 5943398.207380 */
		6099680,	/* 6099680.215452 */
		6253421,	/* 6253420.939751 */
		6404702,	/* 6404701.706649 */
		6553600,	/* 6553600.000000 */
	};


	if (x == 0)
		return 0;

	/* Scale x (normalize) */
	/* computing y in log(x/y) = log(x) - log(y) */
	if ((x & ((0xffffffff) << (scale + 1))) == 0) {
		for (k = scale; k > 0; k--) {
			if (x & (((u32) 1) << scale))
				break;
			x <<= 1;
		}
	} else {
		for (k = scale; k < 31; k++) {
			if ((x & (((u32) (-1)) << (scale + 1))) == 0)
				break;
			x >>= 1;
		}
	}
	/*
	   Now x has binary point between bit[scale] and bit[scale-1]
	   and 1.0 <= x < 2.0 */

	/* correction for divison: log(x) = log(x/y)+log(y) */
	y = k * ((((u32) 1) << scale) * 200);

	/* remove integer part */
	x &= ((((u32) 1) << scale) - 1);
	/* get index */
	i = (u8) (x >> (scale - indexWidth));
	/* compute delta (x - a) */
	d = x & ((((u32) 1) << (scale - indexWidth)) - 1);
	/* compute log, multiplication (d* (..)) must be within range ! */
	y += log2lut[i] +
	    ((d * (log2lut[i + 1] - log2lut[i])) >> (scale - indexWidth));
	/* Conver to log10() */
	y /= 108853;		/* (log2(10) << scale) */
	r = (y >> 1);
	/* rounding */
	if (y & ((u32) 1))
		r++;
	return r;
}

/****************************************************************************/
/* I2C **********************************************************************/
/****************************************************************************/

static int i2c_read1(struct i2c_adapter *adapter, u8 adr, u8 *val)
{
	struct i2c_msg msgs[1] = { {.addr = adr, .flags = I2C_M_RD,
				    .buf = val, .len = 1}
	};
	return (i2c_transfer(adapter, msgs, 1) == 1) ? 0 : -1;
}

static int i2c_write(struct i2c_adapter *adap, u8 adr, u8 *data, int len)
{
	struct i2c_msg msg = {
	    .addr = adr, .flags = 0, .buf = data, .len = len };

	if (i2c_transfer(adap, &msg, 1) != 1) {
		printk(KERN_ERR "drxk: i2c write error at addr 0x%02x\n", adr);
		return -1;
	}
	return 0;
}

static int i2c_read(struct i2c_adapter *adap,
		    u8 adr, u8 *msg, int len, u8 *answ, int alen)
{
	struct i2c_msg msgs[2] = { {.addr = adr, .flags = 0,
				    .buf = msg, .len = len},
	{.addr = adr, .flags = I2C_M_RD,
	 .buf = answ, .len = alen}
	};
	if (i2c_transfer(adap, msgs, 2) != 2) {
		printk(KERN_ERR "drxk: i2c read error at addr 0x%02x\n", adr);
		return -1;
	}
	return 0;
}

static int Read16(struct drxk_state *state, u32 reg, u16 *data, u8 flags)
{
	u8 adr = state->demod_address, mm1[4], mm2[2], len;
#ifdef I2C_LONG_ADR
	flags |= 0xC0;
#endif
	if (DRXDAP_FASI_LONG_FORMAT(reg) || (flags != 0)) {
		mm1[0] = (((reg << 1) & 0xFF) | 0x01);
		mm1[1] = ((reg >> 16) & 0xFF);
		mm1[2] = ((reg >> 24) & 0xFF) | flags;
		mm1[3] = ((reg >> 7) & 0xFF);
		len = 4;
	} else {
		mm1[0] = ((reg << 1) & 0xFF);
		mm1[1] = (((reg >> 16) & 0x0F) | ((reg >> 18) & 0xF0));
		len = 2;
	}
	if (i2c_read(state->i2c, adr, mm1, len, mm2, 2) < 0)
		return -1;
	if (data)
		*data = mm2[0] | (mm2[1] << 8);
	return 0;
}

static int Read16_0(struct drxk_state *state, u32 reg, u16 *data)
{
	return Read16(state, reg, data, 0);
}

static int Read32(struct drxk_state *state, u32 reg, u32 *data, u8 flags)
{
	u8 adr = state->demod_address, mm1[4], mm2[4], len;
#ifdef I2C_LONG_ADR
	flags |= 0xC0;
#endif
	if (DRXDAP_FASI_LONG_FORMAT(reg) || (flags != 0)) {
		mm1[0] = (((reg << 1) & 0xFF) | 0x01);
		mm1[1] = ((reg >> 16) & 0xFF);
		mm1[2] = ((reg >> 24) & 0xFF) | flags;
		mm1[3] = ((reg >> 7) & 0xFF);
		len = 4;
	} else {
		mm1[0] = ((reg << 1) & 0xFF);
		mm1[1] = (((reg >> 16) & 0x0F) | ((reg >> 18) & 0xF0));
		len = 2;
	}
	if (i2c_read(state->i2c, adr, mm1, len, mm2, 4) < 0)
		return -1;
	if (data)
		*data = mm2[0] | (mm2[1] << 8) |
		    (mm2[2] << 16) | (mm2[3] << 24);
	return 0;
}

static int Write16(struct drxk_state *state, u32 reg, u16 data, u8 flags)
{
	u8 adr = state->demod_address, mm[6], len;
#ifdef I2C_LONG_ADR
	flags |= 0xC0;
#endif
	if (DRXDAP_FASI_LONG_FORMAT(reg) || (flags != 0)) {
		mm[0] = (((reg << 1) & 0xFF) | 0x01);
		mm[1] = ((reg >> 16) & 0xFF);
		mm[2] = ((reg >> 24) & 0xFF) | flags;
		mm[3] = ((reg >> 7) & 0xFF);
		len = 4;
	} else {
		mm[0] = ((reg << 1) & 0xFF);
		mm[1] = (((reg >> 16) & 0x0F) | ((reg >> 18) & 0xF0));
		len = 2;
	}
	mm[len] = data & 0xff;
	mm[len + 1] = (data >> 8) & 0xff;
	if (i2c_write(state->i2c, adr, mm, len + 2) < 0)
		return -1;
	return 0;
}

static int Write16_0(struct drxk_state *state, u32 reg, u16 data)
{
	return Write16(state, reg, data, 0);
}

static int Write32(struct drxk_state *state, u32 reg, u32 data, u8 flags)
{
	u8 adr = state->demod_address, mm[8], len;
#ifdef I2C_LONG_ADR
	flags |= 0xC0;
#endif
	if (DRXDAP_FASI_LONG_FORMAT(reg) || (flags != 0)) {
		mm[0] = (((reg << 1) & 0xFF) | 0x01);
		mm[1] = ((reg >> 16) & 0xFF);
		mm[2] = ((reg >> 24) & 0xFF) | flags;
		mm[3] = ((reg >> 7) & 0xFF);
		len = 4;
	} else {
		mm[0] = ((reg << 1) & 0xFF);
		mm[1] = (((reg >> 16) & 0x0F) | ((reg >> 18) & 0xF0));
		len = 2;
	}
	mm[len] = data & 0xff;
	mm[len + 1] = (data >> 8) & 0xff;
	mm[len + 2] = (data >> 16) & 0xff;
	mm[len + 3] = (data >> 24) & 0xff;
	if (i2c_write(state->i2c, adr, mm, len + 4) < 0)
		return -1;
	return 0;
}

static int WriteBlock(struct drxk_state *state, u32 Address,
		      const int BlockSize, const u8 pBlock[], u8 Flags)
{
	int status = 0, BlkSize = BlockSize;
#ifdef I2C_LONG_ADR
	Flags |= 0xC0;
#endif
	while (BlkSize > 0) {
		int Chunk = BlkSize > state->m_ChunkSize ?
		    state->m_ChunkSize : BlkSize;
		u8 *AdrBuf = &state->Chunk[0];
		u32 AdrLength = 0;

		if (DRXDAP_FASI_LONG_FORMAT(Address) || (Flags != 0)) {
			AdrBuf[0] = (((Address << 1) & 0xFF) | 0x01);
			AdrBuf[1] = ((Address >> 16) & 0xFF);
			AdrBuf[2] = ((Address >> 24) & 0xFF);
			AdrBuf[3] = ((Address >> 7) & 0xFF);
			AdrBuf[2] |= Flags;
			AdrLength = 4;
			if (Chunk == state->m_ChunkSize)
				Chunk -= 2;
		} else {
			AdrBuf[0] = ((Address << 1) & 0xFF);
			AdrBuf[1] = (((Address >> 16) & 0x0F) |
				     ((Address >> 18) & 0xF0));
			AdrLength = 2;
		}
		memcpy(&state->Chunk[AdrLength], pBlock, Chunk);
		status = i2c_write(state->i2c, state->demod_address,
				   &state->Chunk[0], Chunk + AdrLength);
		if (status < 0) {
			printk(KERN_ERR "drxk: %s: i2c write error at addr 0x%02x\n",
			       __func__, Address);
			break;
		}
		pBlock += Chunk;
		Address += (Chunk >> 1);
		BlkSize -= Chunk;
	}
	return status;
}

#ifndef DRXK_MAX_RETRIES_POWERUP
#define DRXK_MAX_RETRIES_POWERUP 20
#endif

int PowerUpDevice(struct drxk_state *state)
{
	int status;
	u8 data = 0;
	u16 retryCount = 0;

	status = i2c_read1(state->i2c, state->demod_address, &data);
	if (status < 0)
		do {
			data = 0;
			if (i2c_write(state->i2c,
				      state->demod_address, &data, 1) < 0)
				printk(KERN_ERR "drxk: powerup failed\n");
			msleep(10);
			retryCount++;
		} while (i2c_read1(state->i2c,
				   state->demod_address, &data) < 0 &&
			 (retryCount < DRXK_MAX_RETRIES_POWERUP));
	if (retryCount >= DRXK_MAX_RETRIES_POWERUP)
		return -1;
	do {
		/* Make sure all clk domains are active */
		status = Write16_0(state, SIO_CC_PWD_MODE__A, SIO_CC_PWD_MODE_LEVEL_NONE);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_CC_UPDATE__A, SIO_CC_UPDATE_KEY);
		if (status < 0)
			break;
		/* Enable pll lock tests */
		status = Write16_0(state, SIO_CC_PLL_LOCK__A, 1);
		if (status < 0)
			break;
		state->m_currentPowerMode = DRX_POWER_UP;
	} while (0);
	return status;
}


static int init_state(struct drxk_state *state)
{
	u32 ulVSBIfAgcMode = DRXK_AGC_CTRL_AUTO;
	u32 ulVSBIfAgcOutputLevel = 0;
	u32 ulVSBIfAgcMinLevel = 0;
	u32 ulVSBIfAgcMaxLevel = 0x7FFF;
	u32 ulVSBIfAgcSpeed = 3;

	u32 ulVSBRfAgcMode = DRXK_AGC_CTRL_AUTO;
	u32 ulVSBRfAgcOutputLevel = 0;
	u32 ulVSBRfAgcMinLevel = 0;
	u32 ulVSBRfAgcMaxLevel = 0x7FFF;
	u32 ulVSBRfAgcSpeed = 3;
	u32 ulVSBRfAgcTop = 9500;
	u32 ulVSBRfAgcCutOffCurrent = 4000;

	u32 ulATVIfAgcMode = DRXK_AGC_CTRL_AUTO;
	u32 ulATVIfAgcOutputLevel = 0;
	u32 ulATVIfAgcMinLevel = 0;
	u32 ulATVIfAgcMaxLevel = 0;
	u32 ulATVIfAgcSpeed = 3;

	u32 ulATVRfAgcMode = DRXK_AGC_CTRL_OFF;
	u32 ulATVRfAgcOutputLevel = 0;
	u32 ulATVRfAgcMinLevel = 0;
	u32 ulATVRfAgcMaxLevel = 0;
	u32 ulATVRfAgcTop = 9500;
	u32 ulATVRfAgcCutOffCurrent = 4000;
	u32 ulATVRfAgcSpeed = 3;

	u32 ulQual83 = DEFAULT_MER_83;
	u32 ulQual93 = DEFAULT_MER_93;

	u32 ulDVBTStaticTSClock = 1;
	u32 ulDVBCStaticTSClock = 1;

	u32 ulMpegLockTimeOut = DEFAULT_DRXK_MPEG_LOCK_TIMEOUT;
	u32 ulDemodLockTimeOut = DEFAULT_DRXK_DEMOD_LOCK_TIMEOUT;

	/* io_pad_cfg register (8 bit reg.) MSB bit is 1 (default value) */
	/* io_pad_cfg_mode output mode is drive always */
	/* io_pad_cfg_drive is set to power 2 (23 mA) */
	u32 ulGPIOCfg = 0x0113;
	u32 ulGPIO = 0;
	u32 ulSerialMode = 1;
	u32 ulInvertTSClock = 0;
	u32 ulTSDataStrength = DRXK_MPEG_SERIAL_OUTPUT_PIN_DRIVE_STRENGTH;
	u32 ulTSClockkStrength = DRXK_MPEG_OUTPUT_CLK_DRIVE_STRENGTH;
	u32 ulDVBTBitrate = 50000000;
	u32 ulDVBCBitrate = DRXK_QAM_SYMBOLRATE_MAX * 8;

	u32 ulInsertRSByte = 0;

	u32 ulRfMirror = 1;
	u32 ulPowerDown = 0;

	u32 ulAntennaDVBT = 1;
	u32 ulAntennaDVBC = 0;
	u32 ulAntennaSwitchDVBTDVBC = 0;

	state->m_hasLNA = false;
	state->m_hasDVBT = false;
	state->m_hasDVBC = false;
	state->m_hasATV = false;
	state->m_hasOOB = false;
	state->m_hasAudio = false;

	state->m_ChunkSize = 124;

	state->m_oscClockFreq = 0;
	state->m_smartAntInverted = false;
	state->m_bPDownOpenBridge = false;

	/* real system clock frequency in kHz */
	state->m_sysClockFreq = 151875;
	/* Timing div, 250ns/Psys */
	/* Timing div, = (delay (nano seconds) * sysclk (kHz))/ 1000 */
	state->m_HICfgTimingDiv = ((state->m_sysClockFreq / 1000) *
				   HI_I2C_DELAY) / 1000;
	/* Clipping */
	if (state->m_HICfgTimingDiv > SIO_HI_RA_RAM_PAR_2_CFG_DIV__M)
		state->m_HICfgTimingDiv = SIO_HI_RA_RAM_PAR_2_CFG_DIV__M;
	state->m_HICfgWakeUpKey = (state->demod_address << 1);
	/* port/bridge/power down ctrl */
	state->m_HICfgCtrl = SIO_HI_RA_RAM_PAR_5_CFG_SLV0_SLAVE;

	state->m_bPowerDown = (ulPowerDown != 0);

	state->m_DRXK_A1_PATCH_CODE = false;
	state->m_DRXK_A1_ROM_CODE = false;
	state->m_DRXK_A2_ROM_CODE = false;
	state->m_DRXK_A3_ROM_CODE = false;
	state->m_DRXK_A2_PATCH_CODE = false;
	state->m_DRXK_A3_PATCH_CODE = false;

	/* Init AGC and PGA parameters */
	/* VSB IF */
	state->m_vsbIfAgcCfg.ctrlMode = (ulVSBIfAgcMode);
	state->m_vsbIfAgcCfg.outputLevel = (ulVSBIfAgcOutputLevel);
	state->m_vsbIfAgcCfg.minOutputLevel = (ulVSBIfAgcMinLevel);
	state->m_vsbIfAgcCfg.maxOutputLevel = (ulVSBIfAgcMaxLevel);
	state->m_vsbIfAgcCfg.speed = (ulVSBIfAgcSpeed);
	state->m_vsbPgaCfg = 140;

	/* VSB RF */
	state->m_vsbRfAgcCfg.ctrlMode = (ulVSBRfAgcMode);
	state->m_vsbRfAgcCfg.outputLevel = (ulVSBRfAgcOutputLevel);
	state->m_vsbRfAgcCfg.minOutputLevel = (ulVSBRfAgcMinLevel);
	state->m_vsbRfAgcCfg.maxOutputLevel = (ulVSBRfAgcMaxLevel);
	state->m_vsbRfAgcCfg.speed = (ulVSBRfAgcSpeed);
	state->m_vsbRfAgcCfg.top = (ulVSBRfAgcTop);
	state->m_vsbRfAgcCfg.cutOffCurrent = (ulVSBRfAgcCutOffCurrent);
	state->m_vsbPreSawCfg.reference = 0x07;
	state->m_vsbPreSawCfg.usePreSaw = true;

	state->m_Quality83percent = DEFAULT_MER_83;
	state->m_Quality93percent = DEFAULT_MER_93;
	if (ulQual93 <= 500 && ulQual83 < ulQual93) {
		state->m_Quality83percent = ulQual83;
		state->m_Quality93percent = ulQual93;
	}

	/* ATV IF */
	state->m_atvIfAgcCfg.ctrlMode = (ulATVIfAgcMode);
	state->m_atvIfAgcCfg.outputLevel = (ulATVIfAgcOutputLevel);
	state->m_atvIfAgcCfg.minOutputLevel = (ulATVIfAgcMinLevel);
	state->m_atvIfAgcCfg.maxOutputLevel = (ulATVIfAgcMaxLevel);
	state->m_atvIfAgcCfg.speed = (ulATVIfAgcSpeed);

	/* ATV RF */
	state->m_atvRfAgcCfg.ctrlMode = (ulATVRfAgcMode);
	state->m_atvRfAgcCfg.outputLevel = (ulATVRfAgcOutputLevel);
	state->m_atvRfAgcCfg.minOutputLevel = (ulATVRfAgcMinLevel);
	state->m_atvRfAgcCfg.maxOutputLevel = (ulATVRfAgcMaxLevel);
	state->m_atvRfAgcCfg.speed = (ulATVRfAgcSpeed);
	state->m_atvRfAgcCfg.top = (ulATVRfAgcTop);
	state->m_atvRfAgcCfg.cutOffCurrent = (ulATVRfAgcCutOffCurrent);
	state->m_atvPreSawCfg.reference = 0x04;
	state->m_atvPreSawCfg.usePreSaw = true;


	/* DVBT RF */
	state->m_dvbtRfAgcCfg.ctrlMode = DRXK_AGC_CTRL_OFF;
	state->m_dvbtRfAgcCfg.outputLevel = 0;
	state->m_dvbtRfAgcCfg.minOutputLevel = 0;
	state->m_dvbtRfAgcCfg.maxOutputLevel = 0xFFFF;
	state->m_dvbtRfAgcCfg.top = 0x2100;
	state->m_dvbtRfAgcCfg.cutOffCurrent = 4000;
	state->m_dvbtRfAgcCfg.speed = 1;


	/* DVBT IF */
	state->m_dvbtIfAgcCfg.ctrlMode = DRXK_AGC_CTRL_AUTO;
	state->m_dvbtIfAgcCfg.outputLevel = 0;
	state->m_dvbtIfAgcCfg.minOutputLevel = 0;
	state->m_dvbtIfAgcCfg.maxOutputLevel = 9000;
	state->m_dvbtIfAgcCfg.top = 13424;
	state->m_dvbtIfAgcCfg.cutOffCurrent = 0;
	state->m_dvbtIfAgcCfg.speed = 3;
	state->m_dvbtIfAgcCfg.FastClipCtrlDelay = 30;
	state->m_dvbtIfAgcCfg.IngainTgtMax = 30000;
	/* state->m_dvbtPgaCfg = 140; */

	state->m_dvbtPreSawCfg.reference = 4;
	state->m_dvbtPreSawCfg.usePreSaw = false;

	/* QAM RF */
	state->m_qamRfAgcCfg.ctrlMode = DRXK_AGC_CTRL_OFF;
	state->m_qamRfAgcCfg.outputLevel = 0;
	state->m_qamRfAgcCfg.minOutputLevel = 6023;
	state->m_qamRfAgcCfg.maxOutputLevel = 27000;
	state->m_qamRfAgcCfg.top = 0x2380;
	state->m_qamRfAgcCfg.cutOffCurrent = 4000;
	state->m_qamRfAgcCfg.speed = 3;

	/* QAM IF */
	state->m_qamIfAgcCfg.ctrlMode = DRXK_AGC_CTRL_AUTO;
	state->m_qamIfAgcCfg.outputLevel = 0;
	state->m_qamIfAgcCfg.minOutputLevel = 0;
	state->m_qamIfAgcCfg.maxOutputLevel = 9000;
	state->m_qamIfAgcCfg.top = 0x0511;
	state->m_qamIfAgcCfg.cutOffCurrent = 0;
	state->m_qamIfAgcCfg.speed = 3;
	state->m_qamIfAgcCfg.IngainTgtMax = 5119;
	state->m_qamIfAgcCfg.FastClipCtrlDelay = 50;

	state->m_qamPgaCfg = 140;
	state->m_qamPreSawCfg.reference = 4;
	state->m_qamPreSawCfg.usePreSaw = false;

	state->m_OperationMode = OM_NONE;
	state->m_DrxkState = DRXK_UNINITIALIZED;

	/* MPEG output configuration */
	state->m_enableMPEGOutput = true;	/* If TRUE; enable MPEG ouput */
	state->m_insertRSByte = false;	/* If TRUE; insert RS byte */
	state->m_enableParallel = true;	/* If TRUE;
					   parallel out otherwise serial */
	state->m_invertDATA = false;	/* If TRUE; invert DATA signals */
	state->m_invertERR = false;	/* If TRUE; invert ERR signal */
	state->m_invertSTR = false;	/* If TRUE; invert STR signals */
	state->m_invertVAL = false;	/* If TRUE; invert VAL signals */
	state->m_invertCLK = (ulInvertTSClock != 0);	/* If TRUE; invert CLK signals */
	state->m_DVBTStaticCLK = (ulDVBTStaticTSClock != 0);
	state->m_DVBCStaticCLK = (ulDVBCStaticTSClock != 0);
	/* If TRUE; static MPEG clockrate will be used;
	   otherwise clockrate will adapt to the bitrate of the TS */

	state->m_DVBTBitrate = ulDVBTBitrate;
	state->m_DVBCBitrate = ulDVBCBitrate;

	state->m_TSDataStrength = (ulTSDataStrength & 0x07);
	state->m_TSClockkStrength = (ulTSClockkStrength & 0x07);

	/* Maximum bitrate in b/s in case static clockrate is selected */
	state->m_mpegTsStaticBitrate = 19392658;
	state->m_disableTEIhandling = false;

	if (ulInsertRSByte)
		state->m_insertRSByte = true;

	state->m_MpegLockTimeOut = DEFAULT_DRXK_MPEG_LOCK_TIMEOUT;
	if (ulMpegLockTimeOut < 10000)
		state->m_MpegLockTimeOut = ulMpegLockTimeOut;
	state->m_DemodLockTimeOut = DEFAULT_DRXK_DEMOD_LOCK_TIMEOUT;
	if (ulDemodLockTimeOut < 10000)
		state->m_DemodLockTimeOut = ulDemodLockTimeOut;

	/* QAM defaults */
	state->m_Constellation = DRX_CONSTELLATION_AUTO;
	state->m_qamInterleaveMode = DRXK_QAM_I12_J17;
	state->m_fecRsPlen = 204 * 8;	/* fecRsPlen  annex A */
	state->m_fecRsPrescale = 1;

	state->m_sqiSpeed = DRXK_DVBT_SQI_SPEED_MEDIUM;
	state->m_agcFastClipCtrlDelay = 0;

	state->m_GPIOCfg = (ulGPIOCfg);
	state->m_GPIO = (ulGPIO == 0 ? 0 : 1);

	state->m_AntennaDVBT = (ulAntennaDVBT == 0 ? 0 : 1);
	state->m_AntennaDVBC = (ulAntennaDVBC == 0 ? 0 : 1);
	state->m_AntennaSwitchDVBTDVBC =
	    (ulAntennaSwitchDVBTDVBC == 0 ? 0 : 1);

	state->m_bPowerDown = false;
	state->m_currentPowerMode = DRX_POWER_DOWN;

	state->m_enableParallel = (ulSerialMode == 0);

	state->m_rfmirror = (ulRfMirror == 0);
	state->m_IfAgcPol = false;
	return 0;
}

static int DRXX_Open(struct drxk_state *state)
{
	int status = 0;
	u32 jtag = 0;
	u16 bid = 0;
	u16 key = 0;

	do {
		/* stop lock indicator process */
		status = Write16_0(state, SCU_RAM_GPIO__A, SCU_RAM_GPIO_HW_LOCK_IND_DISABLE);
		if (status < 0)
			break;
		/* Check device id */
		status = Read16(state, SIO_TOP_COMM_KEY__A, &key, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_TOP_COMM_KEY__A, SIO_TOP_COMM_KEY_KEY);
		if (status < 0)
			break;
		status = Read32(state, SIO_TOP_JTAGID_LO__A, &jtag, 0);
		if (status < 0)
			break;
		status = Read16(state, SIO_PDR_UIO_IN_HI__A, &bid, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_TOP_COMM_KEY__A, key);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int GetDeviceCapabilities(struct drxk_state *state)
{
	u16 sioPdrOhwCfg = 0;
	u32 sioTopJtagidLo = 0;
	int status;

	do {
		/* driver 0.9.0 */
		/* stop lock indicator process */
		status = Write16_0(state, SCU_RAM_GPIO__A, SCU_RAM_GPIO_HW_LOCK_IND_DISABLE);
		if (status < 0)
			break;

		status = Write16_0(state, SIO_TOP_COMM_KEY__A, 0xFABA);
		if (status < 0)
			break;
		status = Read16(state, SIO_PDR_OHW_CFG__A, &sioPdrOhwCfg, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_TOP_COMM_KEY__A, 0x0000);
		if (status < 0)
			break;

		switch ((sioPdrOhwCfg & SIO_PDR_OHW_CFG_FREF_SEL__M)) {
		case 0:
			/* ignore (bypass ?) */
			break;
		case 1:
			/* 27 MHz */
			state->m_oscClockFreq = 27000;
			break;
		case 2:
			/* 20.25 MHz */
			state->m_oscClockFreq = 20250;
			break;
		case 3:
			/* 4 MHz */
			state->m_oscClockFreq = 20250;
			break;
		default:
			return -1;
		}
		/*
		   Determine device capabilities
		   Based on pinning v14
		 */
		status = Read32(state, SIO_TOP_JTAGID_LO__A, &sioTopJtagidLo, 0);
		if (status < 0)
			break;
		/* driver 0.9.0 */
		switch ((sioTopJtagidLo >> 29) & 0xF) {
		case 0:
			state->m_deviceSpin = DRXK_SPIN_A1;
			break;
		case 2:
			state->m_deviceSpin = DRXK_SPIN_A2;
			break;
		case 3:
			state->m_deviceSpin = DRXK_SPIN_A3;
			break;
		default:
			state->m_deviceSpin = DRXK_SPIN_UNKNOWN;
			status = -1;
			break;
		}
		switch ((sioTopJtagidLo >> 12) & 0xFF) {
		case 0x13:
			/* typeId = DRX3913K_TYPE_ID */
			state->m_hasLNA = false;
			state->m_hasOOB = false;
			state->m_hasATV = false;
			state->m_hasAudio = false;
			state->m_hasDVBT = true;
			state->m_hasDVBC = true;
			state->m_hasSAWSW = true;
			state->m_hasGPIO2 = false;
			state->m_hasGPIO1 = false;
			state->m_hasIRQN = false;
			break;
		case 0x15:
			/* typeId = DRX3915K_TYPE_ID */
			state->m_hasLNA = false;
			state->m_hasOOB = false;
			state->m_hasATV = true;
			state->m_hasAudio = false;
			state->m_hasDVBT = true;
			state->m_hasDVBC = false;
			state->m_hasSAWSW = true;
			state->m_hasGPIO2 = true;
			state->m_hasGPIO1 = true;
			state->m_hasIRQN = false;
			break;
		case 0x16:
			/* typeId = DRX3916K_TYPE_ID */
			state->m_hasLNA = false;
			state->m_hasOOB = false;
			state->m_hasATV = true;
			state->m_hasAudio = false;
			state->m_hasDVBT = true;
			state->m_hasDVBC = false;
			state->m_hasSAWSW = true;
			state->m_hasGPIO2 = true;
			state->m_hasGPIO1 = true;
			state->m_hasIRQN = false;
			break;
		case 0x18:
			/* typeId = DRX3918K_TYPE_ID */
			state->m_hasLNA = false;
			state->m_hasOOB = false;
			state->m_hasATV = true;
			state->m_hasAudio = true;
			state->m_hasDVBT = true;
			state->m_hasDVBC = false;
			state->m_hasSAWSW = true;
			state->m_hasGPIO2 = true;
			state->m_hasGPIO1 = true;
			state->m_hasIRQN = false;
			break;
		case 0x21:
			/* typeId = DRX3921K_TYPE_ID */
			state->m_hasLNA = false;
			state->m_hasOOB = false;
			state->m_hasATV = true;
			state->m_hasAudio = true;
			state->m_hasDVBT = true;
			state->m_hasDVBC = true;
			state->m_hasSAWSW = true;
			state->m_hasGPIO2 = true;
			state->m_hasGPIO1 = true;
			state->m_hasIRQN = false;
			break;
		case 0x23:
			/* typeId = DRX3923K_TYPE_ID */
			state->m_hasLNA = false;
			state->m_hasOOB = false;
			state->m_hasATV = true;
			state->m_hasAudio = true;
			state->m_hasDVBT = true;
			state->m_hasDVBC = true;
			state->m_hasSAWSW = true;
			state->m_hasGPIO2 = true;
			state->m_hasGPIO1 = true;
			state->m_hasIRQN = false;
			break;
		case 0x25:
			/* typeId = DRX3925K_TYPE_ID */
			state->m_hasLNA = false;
			state->m_hasOOB = false;
			state->m_hasATV = true;
			state->m_hasAudio = true;
			state->m_hasDVBT = true;
			state->m_hasDVBC = true;
			state->m_hasSAWSW = true;
			state->m_hasGPIO2 = true;
			state->m_hasGPIO1 = true;
			state->m_hasIRQN = false;
			break;
		case 0x26:
			/* typeId = DRX3926K_TYPE_ID */
			state->m_hasLNA = false;
			state->m_hasOOB = false;
			state->m_hasATV = true;
			state->m_hasAudio = false;
			state->m_hasDVBT = true;
			state->m_hasDVBC = true;
			state->m_hasSAWSW = true;
			state->m_hasGPIO2 = true;
			state->m_hasGPIO1 = true;
			state->m_hasIRQN = false;
			break;
		default:
			printk(KERN_ERR "drxk: DeviceID not supported = %02x\n",
			       ((sioTopJtagidLo >> 12) & 0xFF));
			status = -1;
			break;
		}
	} while (0);
	return status;
}

static int HI_Command(struct drxk_state *state, u16 cmd, u16 *pResult)
{
	int status;
	bool powerdown_cmd;

	/* Write command */
	status = Write16_0(state, SIO_HI_RA_RAM_CMD__A, cmd);
	if (status < 0)
		return status;
	if (cmd == SIO_HI_RA_RAM_CMD_RESET)
		msleep(1);

	powerdown_cmd =
	    (bool) ((cmd == SIO_HI_RA_RAM_CMD_CONFIG) &&
		    ((state->m_HICfgCtrl) &
		     SIO_HI_RA_RAM_PAR_5_CFG_SLEEP__M) ==
		    SIO_HI_RA_RAM_PAR_5_CFG_SLEEP_ZZZ);
	if (powerdown_cmd == false) {
		/* Wait until command rdy */
		u32 retryCount = 0;
		u16 waitCmd;

		do {
			msleep(1);
			retryCount += 1;
			status = Read16(state, SIO_HI_RA_RAM_CMD__A,
					&waitCmd, 0);
		} while ((status < 0) && (retryCount < DRXK_MAX_RETRIES)
			 && (waitCmd != 0));

		if (status == 0)
			status = Read16(state, SIO_HI_RA_RAM_RES__A,
					pResult, 0);
	}
	return status;
}

static int HI_CfgCommand(struct drxk_state *state)
{
	int status;

	mutex_lock(&state->mutex);
	do {
		status = Write16_0(state, SIO_HI_RA_RAM_PAR_6__A, state->m_HICfgTimeout);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_HI_RA_RAM_PAR_5__A, state->m_HICfgCtrl);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_HI_RA_RAM_PAR_4__A, state->m_HICfgWakeUpKey);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_HI_RA_RAM_PAR_3__A, state->m_HICfgBridgeDelay);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_HI_RA_RAM_PAR_2__A, state->m_HICfgTimingDiv);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_HI_RA_RAM_PAR_1__A, SIO_HI_RA_RAM_PAR_1_PAR1_SEC_KEY);
		if (status < 0)
			break;
		status = HI_Command(state, SIO_HI_RA_RAM_CMD_CONFIG, 0);
		if (status < 0)
			break;

		state->m_HICfgCtrl &= ~SIO_HI_RA_RAM_PAR_5_CFG_SLEEP_ZZZ;
	} while (0);
	mutex_unlock(&state->mutex);
	return status;
}

static int InitHI(struct drxk_state *state)
{
	state->m_HICfgWakeUpKey = (state->demod_address << 1);
	state->m_HICfgTimeout = 0x96FF;
	/* port/bridge/power down ctrl */
	state->m_HICfgCtrl = SIO_HI_RA_RAM_PAR_5_CFG_SLV0_SLAVE;
	return HI_CfgCommand(state);
}

static int MPEGTSConfigurePins(struct drxk_state *state, bool mpegEnable)
{
	int status = -1;
	u16 sioPdrMclkCfg = 0;
	u16 sioPdrMdxCfg = 0;

	do {
		/* stop lock indicator process */
		status = Write16_0(state, SCU_RAM_GPIO__A, SCU_RAM_GPIO_HW_LOCK_IND_DISABLE);
		if (status < 0)
			break;

		/*  MPEG TS pad configuration */
		status = Write16_0(state, SIO_TOP_COMM_KEY__A, 0xFABA);
		if (status < 0)
			break;

		if (mpegEnable == false) {
			/*  Set MPEG TS pads to inputmode */
			status = Write16_0(state, SIO_PDR_MSTRT_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MERR_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MCLK_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MVAL_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD0_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD1_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD2_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD3_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD4_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD5_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD6_CFG__A, 0x0000);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD7_CFG__A, 0x0000);
			if (status < 0)
				break;
		} else {
			/* Enable MPEG output */
			sioPdrMdxCfg =
			    ((state->m_TSDataStrength <<
			      SIO_PDR_MD0_CFG_DRIVE__B) | 0x0003);
			sioPdrMclkCfg = ((state->m_TSClockkStrength <<
					  SIO_PDR_MCLK_CFG_DRIVE__B) |
					 0x0003);

			status = Write16_0(state, SIO_PDR_MSTRT_CFG__A, sioPdrMdxCfg);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MERR_CFG__A, 0x0000);	/* Disable */
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MVAL_CFG__A, 0x0000);	/* Disable */
			if (status < 0)
				break;
			if (state->m_enableParallel == true) {
				/* paralel -> enable MD1 to MD7 */
				status = Write16_0(state, SIO_PDR_MD1_CFG__A, sioPdrMdxCfg);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD2_CFG__A, sioPdrMdxCfg);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD3_CFG__A, sioPdrMdxCfg);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD4_CFG__A, sioPdrMdxCfg);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD5_CFG__A, sioPdrMdxCfg);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD6_CFG__A, sioPdrMdxCfg);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD7_CFG__A, sioPdrMdxCfg);
				if (status < 0)
					break;
			} else {
				sioPdrMdxCfg = ((state->m_TSDataStrength <<
						 SIO_PDR_MD0_CFG_DRIVE__B)
						| 0x0003);
				/* serial -> disable MD1 to MD7 */
				status = Write16_0(state, SIO_PDR_MD1_CFG__A, 0x0000);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD2_CFG__A, 0x0000);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD3_CFG__A, 0x0000);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD4_CFG__A, 0x0000);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD5_CFG__A, 0x0000);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD6_CFG__A, 0x0000);
				if (status < 0)
					break;
				status = Write16_0(state, SIO_PDR_MD7_CFG__A, 0x0000);
				if (status < 0)
					break;
			}
			status = Write16_0(state, SIO_PDR_MCLK_CFG__A, sioPdrMclkCfg);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_PDR_MD0_CFG__A, sioPdrMdxCfg);
			if (status < 0)
				break;
		}
		/*  Enable MB output over MPEG pads and ctl input */
		status = Write16_0(state, SIO_PDR_MON_CFG__A, 0x0000);
		if (status < 0)
			break;
		/*  Write nomagic word to enable pdr reg write */
		status = Write16_0(state, SIO_TOP_COMM_KEY__A, 0x0000);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int MPEGTSDisable(struct drxk_state *state)
{
	return MPEGTSConfigurePins(state, false);
}

static int BLChainCmd(struct drxk_state *state,
		      u16 romOffset, u16 nrOfElements, u32 timeOut)
{
	u16 blStatus = 0;
	int status;
	unsigned long end;

	mutex_lock(&state->mutex);
	do {
		status = Write16_0(state, SIO_BL_MODE__A, SIO_BL_MODE_CHAIN);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_BL_CHAIN_ADDR__A, romOffset);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_BL_CHAIN_LEN__A, nrOfElements);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_BL_ENABLE__A, SIO_BL_ENABLE_ON);
		if (status < 0)
			break;
		end = jiffies + msecs_to_jiffies(timeOut);

		do {
			msleep(1);
			status = Read16(state, SIO_BL_STATUS__A, &blStatus, 0);
			if (status < 0)
				break;
		} while ((blStatus == 0x1) &&
			 ((time_is_after_jiffies(end))));
		if (blStatus == 0x1) {
			printk(KERN_ERR "drxk: SIO not ready\n");
			mutex_unlock(&state->mutex);
			return -1;
		}
	} while (0);
	mutex_unlock(&state->mutex);
	return status;
}


static int DownloadMicrocode(struct drxk_state *state,
			     const u8 pMCImage[], u32 Length)
{
	const u8 *pSrc = pMCImage;
	u16 Flags;
	u16 Drain;
	u32 Address;
	u16 nBlocks;
	u16 BlockSize;
	u16 BlockCRC;
	u32 offset = 0;
	u32 i;
	int status = 0;

	/* down the drain (we don care about MAGIC_WORD) */
	Drain = (pSrc[0] << 8) | pSrc[1];
	pSrc += sizeof(u16);
	offset += sizeof(u16);
	nBlocks = (pSrc[0] << 8) | pSrc[1];
	pSrc += sizeof(u16);
	offset += sizeof(u16);

	for (i = 0; i < nBlocks; i += 1) {
		Address = (pSrc[0] << 24) | (pSrc[1] << 16) |
		    (pSrc[2] << 8) | pSrc[3];
		pSrc += sizeof(u32);
		offset += sizeof(u32);

		BlockSize = ((pSrc[0] << 8) | pSrc[1]) * sizeof(u16);
		pSrc += sizeof(u16);
		offset += sizeof(u16);

		Flags = (pSrc[0] << 8) | pSrc[1];
		pSrc += sizeof(u16);
		offset += sizeof(u16);

		BlockCRC = (pSrc[0] << 8) | pSrc[1];
		pSrc += sizeof(u16);
		offset += sizeof(u16);
		status = WriteBlock(state, Address, BlockSize, pSrc, 0);
		if (status < 0)
			break;
		pSrc += BlockSize;
		offset += BlockSize;
	}
	return status;
}

static int DVBTEnableOFDMTokenRing(struct drxk_state *state, bool enable)
{
	int status;
	u16 data = 0;
	u16 desiredCtrl = SIO_OFDM_SH_OFDM_RING_ENABLE_ON;
	u16 desiredStatus = SIO_OFDM_SH_OFDM_RING_STATUS_ENABLED;
	unsigned long end;

	if (enable == false) {
		desiredCtrl = SIO_OFDM_SH_OFDM_RING_ENABLE_OFF;
		desiredStatus = SIO_OFDM_SH_OFDM_RING_STATUS_DOWN;
	}

	status = (Read16_0(state, SIO_OFDM_SH_OFDM_RING_STATUS__A, &data));

	if (data == desiredStatus) {
		/* tokenring already has correct status */
		return status;
	}
	/* Disable/enable dvbt tokenring bridge   */
	status =
	    Write16_0(state, SIO_OFDM_SH_OFDM_RING_ENABLE__A, desiredCtrl);

	end = jiffies + msecs_to_jiffies(DRXK_OFDM_TR_SHUTDOWN_TIMEOUT);
	do {
		status = Read16_0(state, SIO_OFDM_SH_OFDM_RING_STATUS__A, &data);
		if (status < 0)
			break;
	} while ((data != desiredStatus) && ((time_is_after_jiffies(end))));
	if (data != desiredStatus) {
		printk(KERN_ERR "drxk: SIO not ready\n");
		return -1;
	}
	return status;
}

static int MPEGTSStop(struct drxk_state *state)
{
	int status = 0;
	u16 fecOcSncMode = 0;
	u16 fecOcIprMode = 0;

	do {
		/* Gracefull shutdown (byte boundaries) */
		status = Read16_0(state, FEC_OC_SNC_MODE__A, &fecOcSncMode);
		if (status < 0)
			break;
		fecOcSncMode |= FEC_OC_SNC_MODE_SHUTDOWN__M;
		status = Write16_0(state, FEC_OC_SNC_MODE__A, fecOcSncMode);
		if (status < 0)
			break;

		/* Suppress MCLK during absence of data */
		status = Read16_0(state, FEC_OC_IPR_MODE__A, &fecOcIprMode);
		if (status < 0)
			break;
		fecOcIprMode |= FEC_OC_IPR_MODE_MCLK_DIS_DAT_ABS__M;
		status = Write16_0(state, FEC_OC_IPR_MODE__A, fecOcIprMode);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int scu_command(struct drxk_state *state,
		       u16 cmd, u8 parameterLen,
		       u16 *parameter, u8 resultLen, u16 *result)
{
#if (SCU_RAM_PARAM_0__A - SCU_RAM_PARAM_15__A) != 15
#error DRXK register mapping no longer compatible with this routine!
#endif
	u16 curCmd = 0;
	int status;
	unsigned long end;

	if ((cmd == 0) || ((parameterLen > 0) && (parameter == NULL)) ||
	    ((resultLen > 0) && (result == NULL)))
		return -1;

	mutex_lock(&state->mutex);
	do {
		/* assume that the command register is ready
		   since it is checked afterwards */
		u8 buffer[34];
		int cnt = 0, ii;

		for (ii = parameterLen - 1; ii >= 0; ii -= 1) {
			buffer[cnt++] = (parameter[ii] & 0xFF);
			buffer[cnt++] = ((parameter[ii] >> 8) & 0xFF);
		}
		buffer[cnt++] = (cmd & 0xFF);
		buffer[cnt++] = ((cmd >> 8) & 0xFF);

		WriteBlock(state, SCU_RAM_PARAM_0__A -
			   (parameterLen - 1), cnt, buffer, 0x00);
		/* Wait until SCU has processed command */
		end = jiffies + msecs_to_jiffies(DRXK_MAX_WAITTIME);
		do {
			msleep(1);
			status = Read16_0(state, SCU_RAM_COMMAND__A, &curCmd);
			if (status < 0)
				break;
		} while (!(curCmd == DRX_SCU_READY)
			 && (time_is_after_jiffies(end)));
		if (curCmd != DRX_SCU_READY) {
			printk(KERN_ERR "drxk: SCU not ready\n");
			mutex_unlock(&state->mutex);
			return -1;
		}
		/* read results */
		if ((resultLen > 0) && (result != NULL)) {
			s16 err;
			int ii;

			for (ii = resultLen - 1; ii >= 0; ii -= 1) {
				status = Read16_0(state, SCU_RAM_PARAM_0__A - ii, &result[ii]);
				if (status < 0)
					break;
			}

			/* Check if an error was reported by SCU */
			err = (s16) result[0];

			/* check a few fixed error codes */
			if (err == SCU_RESULT_UNKSTD) {
				printk(KERN_ERR "drxk: SCU_RESULT_UNKSTD\n");
				mutex_unlock(&state->mutex);
				return -1;
			} else if (err == SCU_RESULT_UNKCMD) {
				printk(KERN_ERR "drxk: SCU_RESULT_UNKCMD\n");
				mutex_unlock(&state->mutex);
				return -1;
			}
			/* here it is assumed that negative means error,
			   and positive no error */
			else if (err < 0) {
				printk(KERN_ERR "drxk: %s ERROR\n", __func__);
				mutex_unlock(&state->mutex);
				return -1;
			}
		}
	} while (0);
	mutex_unlock(&state->mutex);
	if (status < 0)
		printk(KERN_ERR "drxk: %s: status = %d\n", __func__, status);

	return status;
}

static int SetIqmAf(struct drxk_state *state, bool active)
{
	u16 data = 0;
	int status;

	do {
		/* Configure IQM */
		status = Read16_0(state, IQM_AF_STDBY__A, &data);
		if (status < 0)
			break;
		if (!active) {
			data |= (IQM_AF_STDBY_STDBY_ADC_STANDBY
				 | IQM_AF_STDBY_STDBY_AMP_STANDBY
				 | IQM_AF_STDBY_STDBY_PD_STANDBY
				 | IQM_AF_STDBY_STDBY_TAGC_IF_STANDBY
				 | IQM_AF_STDBY_STDBY_TAGC_RF_STANDBY);
		} else {	/* active */

			data &= ((~IQM_AF_STDBY_STDBY_ADC_STANDBY)
				 & (~IQM_AF_STDBY_STDBY_AMP_STANDBY)
				 & (~IQM_AF_STDBY_STDBY_PD_STANDBY)
				 & (~IQM_AF_STDBY_STDBY_TAGC_IF_STANDBY)
				 & (~IQM_AF_STDBY_STDBY_TAGC_RF_STANDBY)
			    );
		}
		status = Write16_0(state, IQM_AF_STDBY__A, data);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int CtrlPowerMode(struct drxk_state *state, enum DRXPowerMode *mode)
{
	int status = 0;
	u16 sioCcPwdMode = 0;

	/* Check arguments */
	if (mode == NULL)
		return -1;

	switch (*mode) {
	case DRX_POWER_UP:
		sioCcPwdMode = SIO_CC_PWD_MODE_LEVEL_NONE;
		break;
	case DRXK_POWER_DOWN_OFDM:
		sioCcPwdMode = SIO_CC_PWD_MODE_LEVEL_OFDM;
		break;
	case DRXK_POWER_DOWN_CORE:
		sioCcPwdMode = SIO_CC_PWD_MODE_LEVEL_CLOCK;
		break;
	case DRXK_POWER_DOWN_PLL:
		sioCcPwdMode = SIO_CC_PWD_MODE_LEVEL_PLL;
		break;
	case DRX_POWER_DOWN:
		sioCcPwdMode = SIO_CC_PWD_MODE_LEVEL_OSC;
		break;
	default:
		/* Unknow sleep mode */
		return -1;
		break;
	}

	/* If already in requested power mode, do nothing */
	if (state->m_currentPowerMode == *mode)
		return 0;

	/* For next steps make sure to start from DRX_POWER_UP mode */
	if (state->m_currentPowerMode != DRX_POWER_UP) {
		do {
			status = PowerUpDevice(state);
			if (status < 0)
				break;
			status = DVBTEnableOFDMTokenRing(state, true);
			if (status < 0)
				break;
		} while (0);
	}

	if (*mode == DRX_POWER_UP) {
		/* Restore analog & pin configuartion */
	} else {
		/* Power down to requested mode */
		/* Backup some register settings */
		/* Set pins with possible pull-ups connected
		   to them in input mode */
		/* Analog power down */
		/* ADC power down */
		/* Power down device */
		/* stop all comm_exec */
		/* Stop and power down previous standard */
		do {
			switch (state->m_OperationMode) {
			case OM_DVBT:
				status = MPEGTSStop(state);
				if (status < 0)
					break;
				status = PowerDownDVBT(state, false);
				if (status < 0)
					break;
				break;
			case OM_QAM_ITU_A:
			case OM_QAM_ITU_C:
				status = MPEGTSStop(state);
				if (status < 0)
					break;
				status = PowerDownQAM(state);
				if (status < 0)
					break;
				break;
			default:
				break;
			}
			status = DVBTEnableOFDMTokenRing(state, false);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_CC_PWD_MODE__A, sioCcPwdMode);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_CC_UPDATE__A, SIO_CC_UPDATE_KEY);
			if (status < 0)
				break;

			if (*mode != DRXK_POWER_DOWN_OFDM) {
				state->m_HICfgCtrl |=
				    SIO_HI_RA_RAM_PAR_5_CFG_SLEEP_ZZZ;
				status = HI_CfgCommand(state);
				if (status < 0)
					break;
			}
		} while (0);
	}
	state->m_currentPowerMode = *mode;
	return status;
}

static int PowerDownDVBT(struct drxk_state *state, bool setPowerMode)
{
	enum DRXPowerMode powerMode = DRXK_POWER_DOWN_OFDM;
	u16 cmdResult = 0;
	u16 data = 0;
	int status;

	do {
		status = Read16_0(state, SCU_COMM_EXEC__A, &data);
		if (status < 0)
			break;
		if (data == SCU_COMM_EXEC_ACTIVE) {
			/* Send OFDM stop command */
			status = scu_command(state, SCU_RAM_COMMAND_STANDARD_OFDM | SCU_RAM_COMMAND_CMD_DEMOD_STOP, 0, NULL, 1, &cmdResult);
			if (status < 0)
				break;
			/* Send OFDM reset command */
			status = scu_command(state, SCU_RAM_COMMAND_STANDARD_OFDM | SCU_RAM_COMMAND_CMD_DEMOD_RESET, 0, NULL, 1, &cmdResult);
			if (status < 0)
				break;
		}

		/* Reset datapath for OFDM, processors first */
		status = Write16_0(state, OFDM_SC_COMM_EXEC__A, OFDM_SC_COMM_EXEC_STOP);
		if (status < 0)
			break;
		status = Write16_0(state, OFDM_LC_COMM_EXEC__A, OFDM_LC_COMM_EXEC_STOP);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_COMM_EXEC__A, IQM_COMM_EXEC_B_STOP);
		if (status < 0)
			break;

		/* powerdown AFE                   */
		status = SetIqmAf(state, false);
		if (status < 0)
			break;

		/* powerdown to OFDM mode          */
		if (setPowerMode) {
			status = CtrlPowerMode(state, &powerMode);
			if (status < 0)
				break;
		}
	} while (0);
	return status;
}

static int SetOperationMode(struct drxk_state *state,
			    enum OperationMode oMode)
{
	int status = 0;

	/*
	   Stop and power down previous standard
	   TODO investigate total power down instead of partial
	   power down depending on "previous" standard.
	 */
	do {
		/* disable HW lock indicator */
		status = Write16_0(state, SCU_RAM_GPIO__A, SCU_RAM_GPIO_HW_LOCK_IND_DISABLE);
		if (status < 0)
			break;

		if (state->m_OperationMode != oMode) {
			switch (state->m_OperationMode) {
				/* OM_NONE was added for start up */
			case OM_NONE:
				break;
			case OM_DVBT:
				status = MPEGTSStop(state);
				if (status < 0)
					break;
				status = PowerDownDVBT(state, true);
				if (status < 0)
					break;
				state->m_OperationMode = OM_NONE;
				break;
			case OM_QAM_ITU_B:
				status = -1;
				break;
			case OM_QAM_ITU_A:	/* fallthrough */
			case OM_QAM_ITU_C:
				status = MPEGTSStop(state);
				if (status < 0)
					break;
				status = PowerDownQAM(state);
				if (status < 0)
					break;
				state->m_OperationMode = OM_NONE;
				break;
			default:
				status = -1;
			}
			status = status;
			if (status < 0)
				break;

			/*
			   Power up new standard
			 */
			switch (oMode) {
			case OM_DVBT:
				state->m_OperationMode = oMode;
				status = SetDVBTStandard(state, oMode);
				if (status < 0)
					break;
				break;
			case OM_QAM_ITU_B:
				status = -1;
				break;
			case OM_QAM_ITU_A:	/* fallthrough */
			case OM_QAM_ITU_C:
				state->m_OperationMode = oMode;
				status = SetQAMStandard(state, oMode);
				if (status < 0)
					break;
				break;
			default:
				status = -1;
			}
		}
		status = status;
		if (status < 0)
			break;
	} while (0);
	return 0;
}

static int Start(struct drxk_state *state, s32 offsetFreq,
		 s32 IntermediateFrequency)
{
	int status = 0;

	do {
		u16 IFreqkHz;
		s32 OffsetkHz = offsetFreq / 1000;

		if (state->m_DrxkState != DRXK_STOPPED &&
		    state->m_DrxkState != DRXK_DTV_STARTED) {
			status = -1;
			break;
		}
		state->m_bMirrorFreqSpect =
		    (state->param.inversion == INVERSION_ON);

		if (IntermediateFrequency < 0) {
			state->m_bMirrorFreqSpect =
			    !state->m_bMirrorFreqSpect;
			IntermediateFrequency = -IntermediateFrequency;
		}

		switch (state->m_OperationMode) {
		case OM_QAM_ITU_A:
		case OM_QAM_ITU_C:
			IFreqkHz = (IntermediateFrequency / 1000);
			status = SetQAM(state, IFreqkHz, OffsetkHz);
			if (status < 0)
				break;
			state->m_DrxkState = DRXK_DTV_STARTED;
			break;
		case OM_DVBT:
			IFreqkHz = (IntermediateFrequency / 1000);
			status = MPEGTSStop(state);
			if (status < 0)
				break;
			status = SetDVBT(state, IFreqkHz, OffsetkHz);
			if (status < 0)
				break;
			status = DVBTStart(state);
			if (status < 0)
				break;
			state->m_DrxkState = DRXK_DTV_STARTED;
			break;
		default:
			break;
		}
	} while (0);
	return status;
}

static int ShutDown(struct drxk_state *state)
{
	MPEGTSStop(state);
	return 0;
}

static int GetLockStatus(struct drxk_state *state, u32 *pLockStatus,
			 u32 Time)
{
	int status = 0;

	if (pLockStatus == NULL)
		return -1;

	*pLockStatus = NOT_LOCKED;

	/* define the SCU command code */
	switch (state->m_OperationMode) {
	case OM_QAM_ITU_A:
	case OM_QAM_ITU_B:
	case OM_QAM_ITU_C:
		status = GetQAMLockStatus(state, pLockStatus);
		break;
	case OM_DVBT:
		status = GetDVBTLockStatus(state, pLockStatus);
		break;
	default:
		break;
	}
	return status;
}

static int MPEGTSStart(struct drxk_state *state)
{
	int status = 0;

	u16 fecOcSncMode = 0;

	do {
		/* Allow OC to sync again */
		status = Read16_0(state, FEC_OC_SNC_MODE__A, &fecOcSncMode);
		if (status < 0)
			break;
		fecOcSncMode &= ~FEC_OC_SNC_MODE_SHUTDOWN__M;
		status = Write16_0(state, FEC_OC_SNC_MODE__A, fecOcSncMode);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_SNC_UNLOCK__A, 1);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int MPEGTSDtoInit(struct drxk_state *state)
{
	int status = -1;

	do {
		/* Rate integration settings */
		status = Write16_0(state, FEC_OC_RCN_CTL_STEP_LO__A, 0x0000);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_RCN_CTL_STEP_HI__A, 0x000C);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_RCN_GAIN__A, 0x000A);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_AVR_PARM_A__A, 0x0008);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_AVR_PARM_B__A, 0x0006);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_TMD_HI_MARGIN__A, 0x0680);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_TMD_LO_MARGIN__A, 0x0080);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_TMD_COUNT__A, 0x03F4);
		if (status < 0)
			break;

		/* Additional configuration */
		status = Write16_0(state, FEC_OC_OCR_INVERT__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_SNC_LWM__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_SNC_HWM__A, 12);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int MPEGTSDtoSetup(struct drxk_state *state,
			  enum OperationMode oMode)
{
	int status = -1;

	u16 fecOcRegMode = 0;	/* FEC_OC_MODE       register value */
	u16 fecOcRegIprMode = 0;	/* FEC_OC_IPR_MODE   register value */
	u16 fecOcDtoMode = 0;	/* FEC_OC_IPR_INVERT register value */
	u16 fecOcFctMode = 0;	/* FEC_OC_IPR_INVERT register value */
	u16 fecOcDtoPeriod = 2;	/* FEC_OC_IPR_INVERT register value */
	u16 fecOcDtoBurstLen = 188;	/* FEC_OC_IPR_INVERT register value */
	u32 fecOcRcnCtlRate = 0;	/* FEC_OC_IPR_INVERT register value */
	u16 fecOcTmdMode = 0;
	u16 fecOcTmdIntUpdRate = 0;
	u32 maxBitRate = 0;
	bool staticCLK = false;

	do {
		/* Check insertion of the Reed-Solomon parity bytes */
		status = Read16_0(state, FEC_OC_MODE__A, &fecOcRegMode);
		if (status < 0)
			break;
		status = Read16_0(state, FEC_OC_IPR_MODE__A, &fecOcRegIprMode);
		if (status < 0)
			break;
		fecOcRegMode &= (~FEC_OC_MODE_PARITY__M);
		fecOcRegIprMode &= (~FEC_OC_IPR_MODE_MVAL_DIS_PAR__M);
		if (state->m_insertRSByte == true) {
			/* enable parity symbol forward */
			fecOcRegMode |= FEC_OC_MODE_PARITY__M;
			/* MVAL disable during parity bytes */
			fecOcRegIprMode |= FEC_OC_IPR_MODE_MVAL_DIS_PAR__M;
			/* TS burst length to 204 */
			fecOcDtoBurstLen = 204;
		}

		/* Check serial or parrallel output */
		fecOcRegIprMode &= (~(FEC_OC_IPR_MODE_SERIAL__M));
		if (state->m_enableParallel == false) {
			/* MPEG data output is serial -> set ipr_mode[0] */
			fecOcRegIprMode |= FEC_OC_IPR_MODE_SERIAL__M;
		}

		switch (oMode) {
		case OM_DVBT:
			maxBitRate = state->m_DVBTBitrate;
			fecOcTmdMode = 3;
			fecOcRcnCtlRate = 0xC00000;
			staticCLK = state->m_DVBTStaticCLK;
			break;
		case OM_QAM_ITU_A:	/* fallthrough */
		case OM_QAM_ITU_C:
			fecOcTmdMode = 0x0004;
			fecOcRcnCtlRate = 0xD2B4EE;	/* good for >63 Mb/s */
			maxBitRate = state->m_DVBCBitrate;
			staticCLK = state->m_DVBCStaticCLK;
			break;
		default:
			status = -1;
		}		/* switch (standard) */
		status = status;
		if (status < 0)
			break;

		/* Configure DTO's */
		if (staticCLK) {
			u32 bitRate = 0;

			/* Rational DTO for MCLK source (static MCLK rate),
			   Dynamic DTO for optimal grouping
			   (avoid intra-packet gaps),
			   DTO offset enable to sync TS burst with MSTRT */
			fecOcDtoMode = (FEC_OC_DTO_MODE_DYNAMIC__M |
					FEC_OC_DTO_MODE_OFFSET_ENABLE__M);
			fecOcFctMode = (FEC_OC_FCT_MODE_RAT_ENA__M |
					FEC_OC_FCT_MODE_VIRT_ENA__M);

			/* Check user defined bitrate */
			bitRate = maxBitRate;
			if (bitRate > 75900000UL) {	/* max is 75.9 Mb/s */
				bitRate = 75900000UL;
			}
			/* Rational DTO period:
			   dto_period = (Fsys / bitrate) - 2

			   Result should be floored,
			   to make sure >= requested bitrate
			 */
			fecOcDtoPeriod = (u16) (((state->m_sysClockFreq)
						 * 1000) / bitRate);
			if (fecOcDtoPeriod <= 2)
				fecOcDtoPeriod = 0;
			else
				fecOcDtoPeriod -= 2;
			fecOcTmdIntUpdRate = 8;
		} else {
			/* (commonAttr->staticCLK == false) => dynamic mode */
			fecOcDtoMode = FEC_OC_DTO_MODE_DYNAMIC__M;
			fecOcFctMode = FEC_OC_FCT_MODE__PRE;
			fecOcTmdIntUpdRate = 5;
		}

		/* Write appropriate registers with requested configuration */
		status = Write16_0(state, FEC_OC_DTO_BURST_LEN__A, fecOcDtoBurstLen);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_DTO_PERIOD__A, fecOcDtoPeriod);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_DTO_MODE__A, fecOcDtoMode);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_FCT_MODE__A, fecOcFctMode);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_MODE__A, fecOcRegMode);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_IPR_MODE__A, fecOcRegIprMode);
		if (status < 0)
			break;

		/* Rate integration settings */
		status = Write32(state, FEC_OC_RCN_CTL_RATE_LO__A, fecOcRcnCtlRate, 0);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_TMD_INT_UPD_RATE__A, fecOcTmdIntUpdRate);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_TMD_MODE__A, fecOcTmdMode);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int MPEGTSConfigurePolarity(struct drxk_state *state)
{
	int status;
	u16 fecOcRegIprInvert = 0;

	/* Data mask for the output data byte */
	u16 InvertDataMask =
	    FEC_OC_IPR_INVERT_MD7__M | FEC_OC_IPR_INVERT_MD6__M |
	    FEC_OC_IPR_INVERT_MD5__M | FEC_OC_IPR_INVERT_MD4__M |
	    FEC_OC_IPR_INVERT_MD3__M | FEC_OC_IPR_INVERT_MD2__M |
	    FEC_OC_IPR_INVERT_MD1__M | FEC_OC_IPR_INVERT_MD0__M;

	/* Control selective inversion of output bits */
	fecOcRegIprInvert &= (~(InvertDataMask));
	if (state->m_invertDATA == true)
		fecOcRegIprInvert |= InvertDataMask;
	fecOcRegIprInvert &= (~(FEC_OC_IPR_INVERT_MERR__M));
	if (state->m_invertERR == true)
		fecOcRegIprInvert |= FEC_OC_IPR_INVERT_MERR__M;
	fecOcRegIprInvert &= (~(FEC_OC_IPR_INVERT_MSTRT__M));
	if (state->m_invertSTR == true)
		fecOcRegIprInvert |= FEC_OC_IPR_INVERT_MSTRT__M;
	fecOcRegIprInvert &= (~(FEC_OC_IPR_INVERT_MVAL__M));
	if (state->m_invertVAL == true)
		fecOcRegIprInvert |= FEC_OC_IPR_INVERT_MVAL__M;
	fecOcRegIprInvert &= (~(FEC_OC_IPR_INVERT_MCLK__M));
	if (state->m_invertCLK == true)
		fecOcRegIprInvert |= FEC_OC_IPR_INVERT_MCLK__M;
	status = Write16_0(state, FEC_OC_IPR_INVERT__A, fecOcRegIprInvert);
	return status;
}

#define   SCU_RAM_AGC_KI_INV_RF_POL__M 0x4000

static int SetAgcRf(struct drxk_state *state,
		    struct SCfgAgc *pAgcCfg, bool isDTV)
{
	int status = 0;
	struct SCfgAgc *pIfAgcSettings;

	if (pAgcCfg == NULL)
		return -1;

	do {
		u16 data = 0;

		switch (pAgcCfg->ctrlMode) {
		case DRXK_AGC_CTRL_AUTO:

			/* Enable RF AGC DAC */
			status = Read16_0(state, IQM_AF_STDBY__A, &data);
			if (status < 0)
				break;
			data &= ~IQM_AF_STDBY_STDBY_TAGC_RF_STANDBY;
			status = Write16_0(state, IQM_AF_STDBY__A, data);
			if (status < 0)
				break;

			status = Read16(state, SCU_RAM_AGC_CONFIG__A, &data, 0);
			if (status < 0)
				break;

			/* Enable SCU RF AGC loop */
			data &= ~SCU_RAM_AGC_CONFIG_DISABLE_RF_AGC__M;

			/* Polarity */
			if (state->m_RfAgcPol)
				data |= SCU_RAM_AGC_CONFIG_INV_RF_POL__M;
			else
				data &= ~SCU_RAM_AGC_CONFIG_INV_RF_POL__M;
			status = Write16_0(state, SCU_RAM_AGC_CONFIG__A, data);
			if (status < 0)
				break;

			/* Set speed (using complementary reduction value) */
			status = Read16(state, SCU_RAM_AGC_KI_RED__A, &data, 0);
			if (status < 0)
				break;

			data &= ~SCU_RAM_AGC_KI_RED_RAGC_RED__M;
			data |= (~(pAgcCfg->speed <<
				   SCU_RAM_AGC_KI_RED_RAGC_RED__B)
				 & SCU_RAM_AGC_KI_RED_RAGC_RED__M);

			status = Write16_0(state, SCU_RAM_AGC_KI_RED__A, data);
			if (status < 0)
				break;

			if (IsDVBT(state))
				pIfAgcSettings = &state->m_dvbtIfAgcCfg;
			else if (IsQAM(state))
				pIfAgcSettings = &state->m_qamIfAgcCfg;
			else
				pIfAgcSettings = &state->m_atvIfAgcCfg;
			if (pIfAgcSettings == NULL)
				return -1;

			/* Set TOP, only if IF-AGC is in AUTO mode */
			if (pIfAgcSettings->ctrlMode == DRXK_AGC_CTRL_AUTO)
				status = Write16_0(state, SCU_RAM_AGC_IF_IACCU_HI_TGT_MAX__A, pAgcCfg->top);
				if (status < 0)
					break;

			/* Cut-Off current */
			status = Write16_0(state, SCU_RAM_AGC_RF_IACCU_HI_CO__A, pAgcCfg->cutOffCurrent);
			if (status < 0)
				break;

			/* Max. output level */
			status = Write16_0(state, SCU_RAM_AGC_RF_MAX__A, pAgcCfg->maxOutputLevel);
			if (status < 0)
				break;

			break;

		case DRXK_AGC_CTRL_USER:
			/* Enable RF AGC DAC */
			status = Read16_0(state, IQM_AF_STDBY__A, &data);
			if (status < 0)
				break;
			data &= ~IQM_AF_STDBY_STDBY_TAGC_RF_STANDBY;
			status = Write16_0(state, IQM_AF_STDBY__A, data);
			if (status < 0)
				break;

			/* Disable SCU RF AGC loop */
			status = Read16_0(state, SCU_RAM_AGC_CONFIG__A, &data);
			if (status < 0)
				break;
			data |= SCU_RAM_AGC_CONFIG_DISABLE_RF_AGC__M;
			if (state->m_RfAgcPol)
				data |= SCU_RAM_AGC_CONFIG_INV_RF_POL__M;
			else
				data &= ~SCU_RAM_AGC_CONFIG_INV_RF_POL__M;
			status = Write16_0(state, SCU_RAM_AGC_CONFIG__A, data);
			if (status < 0)
				break;

			/* SCU c.o.c. to 0, enabling full control range */
			status = Write16_0(state, SCU_RAM_AGC_RF_IACCU_HI_CO__A, 0);
			if (status < 0)
				break;

			/* Write value to output pin */
			status = Write16_0(state, SCU_RAM_AGC_RF_IACCU_HI__A, pAgcCfg->outputLevel);
			if (status < 0)
				break;
			break;

		case DRXK_AGC_CTRL_OFF:
			/* Disable RF AGC DAC */
			status = Read16_0(state, IQM_AF_STDBY__A, &data);
			if (status < 0)
				break;
			data |= IQM_AF_STDBY_STDBY_TAGC_RF_STANDBY;
			status = Write16_0(state, IQM_AF_STDBY__A, data);
			if (status < 0)
				break;

			/* Disable SCU RF AGC loop */
			status = Read16_0(state, SCU_RAM_AGC_CONFIG__A, &data);
			if (status < 0)
				break;
			data |= SCU_RAM_AGC_CONFIG_DISABLE_RF_AGC__M;
			status = Write16_0(state, SCU_RAM_AGC_CONFIG__A, data);
			if (status < 0)
				break;
			break;

		default:
			return -1;

		}		/* switch (agcsettings->ctrlMode) */
	} while (0);
	return status;
}

#define SCU_RAM_AGC_KI_INV_IF_POL__M 0x2000

static int SetAgcIf(struct drxk_state *state,
		    struct SCfgAgc *pAgcCfg, bool isDTV)
{
	u16 data = 0;
	int status = 0;
	struct SCfgAgc *pRfAgcSettings;

	do {
		switch (pAgcCfg->ctrlMode) {
		case DRXK_AGC_CTRL_AUTO:

			/* Enable IF AGC DAC */
			status = Read16_0(state, IQM_AF_STDBY__A, &data);
			if (status < 0)
				break;
			data &= ~IQM_AF_STDBY_STDBY_TAGC_IF_STANDBY;
			status = Write16_0(state, IQM_AF_STDBY__A, data);
			if (status < 0)
				break;

			status = Read16_0(state, SCU_RAM_AGC_CONFIG__A, &data);
			if (status < 0)
				break;

			/* Enable SCU IF AGC loop */
			data &= ~SCU_RAM_AGC_CONFIG_DISABLE_IF_AGC__M;

			/* Polarity */
			if (state->m_IfAgcPol)
				data |= SCU_RAM_AGC_CONFIG_INV_IF_POL__M;
			else
				data &= ~SCU_RAM_AGC_CONFIG_INV_IF_POL__M;
			status = Write16_0(state, SCU_RAM_AGC_CONFIG__A, data);
			if (status < 0)
				break;

			/* Set speed (using complementary reduction value) */
			status = Read16_0(state, SCU_RAM_AGC_KI_RED__A, &data);
			if (status < 0)
				break;
			data &= ~SCU_RAM_AGC_KI_RED_IAGC_RED__M;
			data |= (~(pAgcCfg->speed <<
				   SCU_RAM_AGC_KI_RED_IAGC_RED__B)
				 & SCU_RAM_AGC_KI_RED_IAGC_RED__M);

			status = Write16_0(state, SCU_RAM_AGC_KI_RED__A, data);
			if (status < 0)
				break;

			if (IsQAM(state))
				pRfAgcSettings = &state->m_qamRfAgcCfg;
			else
				pRfAgcSettings = &state->m_atvRfAgcCfg;
			if (pRfAgcSettings == NULL)
				return -1;
			/* Restore TOP */
			status = Write16_0(state, SCU_RAM_AGC_IF_IACCU_HI_TGT_MAX__A, pRfAgcSettings->top);
			if (status < 0)
				break;
			break;

		case DRXK_AGC_CTRL_USER:

			/* Enable IF AGC DAC */
			status = Read16_0(state, IQM_AF_STDBY__A, &data);
			if (status < 0)
				break;
			data &= ~IQM_AF_STDBY_STDBY_TAGC_IF_STANDBY;
			status = Write16_0(state, IQM_AF_STDBY__A, data);
			if (status < 0)
				break;

			status = Read16_0(state, SCU_RAM_AGC_CONFIG__A, &data);
			if (status < 0)
				break;

			/* Disable SCU IF AGC loop */
			data |= SCU_RAM_AGC_CONFIG_DISABLE_IF_AGC__M;

			/* Polarity */
			if (state->m_IfAgcPol)
				data |= SCU_RAM_AGC_CONFIG_INV_IF_POL__M;
			else
				data &= ~SCU_RAM_AGC_CONFIG_INV_IF_POL__M;
			status = Write16_0(state, SCU_RAM_AGC_CONFIG__A, data);
			if (status < 0)
				break;

			/* Write value to output pin */
			status = Write16_0(state, SCU_RAM_AGC_IF_IACCU_HI_TGT_MAX__A, pAgcCfg->outputLevel);
			if (status < 0)
				break;
			break;

		case DRXK_AGC_CTRL_OFF:

			/* Disable If AGC DAC */
			status = Read16_0(state, IQM_AF_STDBY__A, &data);
			if (status < 0)
				break;
			data |= IQM_AF_STDBY_STDBY_TAGC_IF_STANDBY;
			status = Write16_0(state, IQM_AF_STDBY__A, data);
			if (status < 0)
				break;

			/* Disable SCU IF AGC loop */
			status = Read16_0(state, SCU_RAM_AGC_CONFIG__A, &data);
			if (status < 0)
				break;
			data |= SCU_RAM_AGC_CONFIG_DISABLE_IF_AGC__M;
			status = Write16_0(state, SCU_RAM_AGC_CONFIG__A, data);
			if (status < 0)
				break;
			break;
		}		/* switch (agcSettingsIf->ctrlMode) */

		/* always set the top to support
		   configurations without if-loop */
		status = Write16_0(state, SCU_RAM_AGC_INGAIN_TGT_MIN__A, pAgcCfg->top);
		if (status < 0)
			break;


	} while (0);
	return status;
}

static int ReadIFAgc(struct drxk_state *state, u32 *pValue)
{
	u16 agcDacLvl;
	int status = Read16_0(state, IQM_AF_AGC_IF__A, &agcDacLvl);

	*pValue = 0;

	if (status == 0) {
		u16 Level = 0;
		if (agcDacLvl > DRXK_AGC_DAC_OFFSET)
			Level = agcDacLvl - DRXK_AGC_DAC_OFFSET;
		if (Level < 14000)
			*pValue = (14000 - Level) / 4;
		else
			*pValue = 0;
	}
	return status;
}

static int GetQAMSignalToNoise(struct drxk_state *state,
			       s32 *pSignalToNoise)
{
	int status = 0;

	do {
		/* MER calculation */
		u16 qamSlErrPower = 0;	/* accum. error between
					   raw and sliced symbols */
		u32 qamSlSigPower = 0;	/* used for MER, depends of
					   QAM constellation */
		u32 qamSlMer = 0;	/* QAM MER */

		/* get the register value needed for MER */
		status = Read16_0(state, QAM_SL_ERR_POWER__A, &qamSlErrPower);
		if (status < 0)
			break;

		switch (state->param.u.qam.modulation) {
		case QAM_16:
			qamSlSigPower = DRXK_QAM_SL_SIG_POWER_QAM16 << 2;
			break;
		case QAM_32:
			qamSlSigPower = DRXK_QAM_SL_SIG_POWER_QAM32 << 2;
			break;
		case QAM_64:
			qamSlSigPower = DRXK_QAM_SL_SIG_POWER_QAM64 << 2;
			break;
		case QAM_128:
			qamSlSigPower = DRXK_QAM_SL_SIG_POWER_QAM128 << 2;
			break;
		default:
		case QAM_256:
			qamSlSigPower = DRXK_QAM_SL_SIG_POWER_QAM256 << 2;
			break;
		}

		if (qamSlErrPower > 0) {
			qamSlMer = Log10Times100(qamSlSigPower) -
			    Log10Times100((u32) qamSlErrPower);
		}
		*pSignalToNoise = qamSlMer;
	} while (0);
	return status;
}

static int GetDVBTSignalToNoise(struct drxk_state *state,
				s32 *pSignalToNoise)
{
	int status = 0;

	u16 regData = 0;
	u32 EqRegTdSqrErrI = 0;
	u32 EqRegTdSqrErrQ = 0;
	u16 EqRegTdSqrErrExp = 0;
	u16 EqRegTdTpsPwrOfs = 0;
	u16 EqRegTdReqSmbCnt = 0;
	u32 tpsCnt = 0;
	u32 SqrErrIQ = 0;
	u32 a = 0;
	u32 b = 0;
	u32 c = 0;
	u32 iMER = 0;
	u16 transmissionParams = 0;

	do {
		status = Read16_0(state, OFDM_EQ_TOP_TD_TPS_PWR_OFS__A, &EqRegTdTpsPwrOfs);
		if (status < 0)
			break;
		status = Read16_0(state, OFDM_EQ_TOP_TD_REQ_SMB_CNT__A, &EqRegTdReqSmbCnt);
		if (status < 0)
			break;
		status = Read16_0(state, OFDM_EQ_TOP_TD_SQR_ERR_EXP__A, &EqRegTdSqrErrExp);
		if (status < 0)
			break;
		status = Read16_0(state, OFDM_EQ_TOP_TD_SQR_ERR_I__A, &regData);
		if (status < 0)
			break;
		/* Extend SQR_ERR_I operational range */
		EqRegTdSqrErrI = (u32) regData;
		if ((EqRegTdSqrErrExp > 11) &&
		    (EqRegTdSqrErrI < 0x00000FFFUL)) {
			EqRegTdSqrErrI += 0x00010000UL;
		}
		status = Read16_0(state, OFDM_EQ_TOP_TD_SQR_ERR_Q__A, &regData);
		if (status < 0)
			break;
		/* Extend SQR_ERR_Q operational range */
		EqRegTdSqrErrQ = (u32) regData;
		if ((EqRegTdSqrErrExp > 11) &&
		    (EqRegTdSqrErrQ < 0x00000FFFUL))
			EqRegTdSqrErrQ += 0x00010000UL;

		status = Read16_0(state, OFDM_SC_RA_RAM_OP_PARAM__A, &transmissionParams);
		if (status < 0)
			break;

		/* Check input data for MER */

		/* MER calculation (in 0.1 dB) without math.h */
		if ((EqRegTdTpsPwrOfs == 0) || (EqRegTdReqSmbCnt == 0))
			iMER = 0;
		else if ((EqRegTdSqrErrI + EqRegTdSqrErrQ) == 0) {
			/* No error at all, this must be the HW reset value
			 * Apparently no first measurement yet
			 * Set MER to 0.0 */
			iMER = 0;
		} else {
			SqrErrIQ = (EqRegTdSqrErrI + EqRegTdSqrErrQ) <<
			    EqRegTdSqrErrExp;
			if ((transmissionParams &
			     OFDM_SC_RA_RAM_OP_PARAM_MODE__M)
			    == OFDM_SC_RA_RAM_OP_PARAM_MODE_2K)
				tpsCnt = 17;
			else
				tpsCnt = 68;

			/* IMER = 100 * log10 (x)
			   where x = (EqRegTdTpsPwrOfs^2 *
			   EqRegTdReqSmbCnt * tpsCnt)/SqrErrIQ

			   => IMER = a + b -c
			   where a = 100 * log10 (EqRegTdTpsPwrOfs^2)
			   b = 100 * log10 (EqRegTdReqSmbCnt * tpsCnt)
			   c = 100 * log10 (SqrErrIQ)
			 */

			/* log(x) x = 9bits * 9bits->18 bits  */
			a = Log10Times100(EqRegTdTpsPwrOfs *
					  EqRegTdTpsPwrOfs);
			/* log(x) x = 16bits * 7bits->23 bits  */
			b = Log10Times100(EqRegTdReqSmbCnt * tpsCnt);
			/* log(x) x = (16bits + 16bits) << 15 ->32 bits  */
			c = Log10Times100(SqrErrIQ);

			iMER = a + b;
			/* No negative MER, clip to zero */
			if (iMER > c)
				iMER -= c;
			else
				iMER = 0;
		}
		*pSignalToNoise = iMER;
	} while (0);

	return status;
}

static int GetSignalToNoise(struct drxk_state *state, s32 *pSignalToNoise)
{
	*pSignalToNoise = 0;
	switch (state->m_OperationMode) {
	case OM_DVBT:
		return GetDVBTSignalToNoise(state, pSignalToNoise);
	case OM_QAM_ITU_A:
	case OM_QAM_ITU_C:
		return GetQAMSignalToNoise(state, pSignalToNoise);
	default:
		break;
	}
	return 0;
}

#if 0
static int GetDVBTQuality(struct drxk_state *state, s32 *pQuality)
{
	/* SNR Values for quasi errorfree reception rom Nordig 2.2 */
	int status = 0;

	static s32 QE_SN[] = {
		51,		/* QPSK 1/2 */
		69,		/* QPSK 2/3 */
		79,		/* QPSK 3/4 */
		89,		/* QPSK 5/6 */
		97,		/* QPSK 7/8 */
		108,		/* 16-QAM 1/2 */
		131,		/* 16-QAM 2/3 */
		146,		/* 16-QAM 3/4 */
		156,		/* 16-QAM 5/6 */
		160,		/* 16-QAM 7/8 */
		165,		/* 64-QAM 1/2 */
		187,		/* 64-QAM 2/3 */
		202,		/* 64-QAM 3/4 */
		216,		/* 64-QAM 5/6 */
		225,		/* 64-QAM 7/8 */
	};

	*pQuality = 0;

	do {
		s32 SignalToNoise = 0;
		u16 Constellation = 0;
		u16 CodeRate = 0;
		u32 SignalToNoiseRel;
		u32 BERQuality;

		status = GetDVBTSignalToNoise(state, &SignalToNoise);
		if (status < 0)
			break;
		status = Read16_0(state, OFDM_EQ_TOP_TD_TPS_CONST__A, &Constellation);
		if (status < 0)
			break;
		Constellation &= OFDM_EQ_TOP_TD_TPS_CONST__M;

		status = Read16_0(state, OFDM_EQ_TOP_TD_TPS_CODE_HP__A, &CodeRate);
		if (status < 0)
			break;
		CodeRate &= OFDM_EQ_TOP_TD_TPS_CODE_HP__M;

		if (Constellation > OFDM_EQ_TOP_TD_TPS_CONST_64QAM ||
		    CodeRate > OFDM_EQ_TOP_TD_TPS_CODE_LP_7_8)
			break;
		SignalToNoiseRel = SignalToNoise -
		    QE_SN[Constellation * 5 + CodeRate];
		BERQuality = 100;

		if (SignalToNoiseRel < -70)
			*pQuality = 0;
		else if (SignalToNoiseRel < 30)
			*pQuality = ((SignalToNoiseRel + 70) *
				     BERQuality) / 100;
		else
			*pQuality = BERQuality;
	} while (0);
	return 0;
};

static int GetDVBCQuality(struct drxk_state *state, s32 *pQuality)
{
	int status = 0;
	*pQuality = 0;

	do {
		u32 SignalToNoise = 0;
		u32 BERQuality = 100;
		u32 SignalToNoiseRel = 0;

		status = GetQAMSignalToNoise(state, &SignalToNoise);
		if (status < 0)
			break;

		switch (state->param.u.qam.modulation) {
		case QAM_16:
			SignalToNoiseRel = SignalToNoise - 200;
			break;
		case QAM_32:
			SignalToNoiseRel = SignalToNoise - 230;
			break;	/* Not in NorDig */
		case QAM_64:
			SignalToNoiseRel = SignalToNoise - 260;
			break;
		case QAM_128:
			SignalToNoiseRel = SignalToNoise - 290;
			break;
		default:
		case QAM_256:
			SignalToNoiseRel = SignalToNoise - 320;
			break;
		}

		if (SignalToNoiseRel < -70)
			*pQuality = 0;
		else if (SignalToNoiseRel < 30)
			*pQuality = ((SignalToNoiseRel + 70) *
				     BERQuality) / 100;
		else
			*pQuality = BERQuality;
	} while (0);

	return status;
}

static int GetQuality(struct drxk_state *state, s32 *pQuality)
{
	switch (state->m_OperationMode) {
	case OM_DVBT:
		return GetDVBTQuality(state, pQuality);
	case OM_QAM_ITU_A:
		return GetDVBCQuality(state, pQuality);
	default:
		break;
	}

	return 0;
}
#endif

/* Free data ram in SIO HI */
#define SIO_HI_RA_RAM_USR_BEGIN__A 0x420040
#define SIO_HI_RA_RAM_USR_END__A   0x420060

#define DRXK_HI_ATOMIC_BUF_START (SIO_HI_RA_RAM_USR_BEGIN__A)
#define DRXK_HI_ATOMIC_BUF_END   (SIO_HI_RA_RAM_USR_BEGIN__A + 7)
#define DRXK_HI_ATOMIC_READ      SIO_HI_RA_RAM_PAR_3_ACP_RW_READ
#define DRXK_HI_ATOMIC_WRITE     SIO_HI_RA_RAM_PAR_3_ACP_RW_WRITE

#define DRXDAP_FASI_ADDR2BLOCK(addr)  (((addr) >> 22) & 0x3F)
#define DRXDAP_FASI_ADDR2BANK(addr)   (((addr) >> 16) & 0x3F)
#define DRXDAP_FASI_ADDR2OFFSET(addr) ((addr) & 0x7FFF)

static int ConfigureI2CBridge(struct drxk_state *state, bool bEnableBridge)
{
	int status;

	if (state->m_DrxkState == DRXK_UNINITIALIZED)
		return -1;
	if (state->m_DrxkState == DRXK_POWERED_DOWN)
		return -1;

	do {
		status = Write16_0(state, SIO_HI_RA_RAM_PAR_1__A, SIO_HI_RA_RAM_PAR_1_PAR1_SEC_KEY);
		if (status < 0)
			break;
		if (bEnableBridge) {
			status = Write16_0(state, SIO_HI_RA_RAM_PAR_2__A, SIO_HI_RA_RAM_PAR_2_BRD_CFG_CLOSED);
			if (status < 0)
				break;
		} else {
			status = Write16_0(state, SIO_HI_RA_RAM_PAR_2__A, SIO_HI_RA_RAM_PAR_2_BRD_CFG_OPEN);
			if (status < 0)
				break;
		}

		status = HI_Command(state, SIO_HI_RA_RAM_CMD_BRDCTRL, 0);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int SetPreSaw(struct drxk_state *state,
		     struct SCfgPreSaw *pPreSawCfg)
{
	int status;

	if ((pPreSawCfg == NULL)
	    || (pPreSawCfg->reference > IQM_AF_PDREF__M))
		return -1;

	status = Write16_0(state, IQM_AF_PDREF__A, pPreSawCfg->reference);
	return status;
}

static int BLDirectCmd(struct drxk_state *state, u32 targetAddr,
		       u16 romOffset, u16 nrOfElements, u32 timeOut)
{
	u16 blStatus = 0;
	u16 offset = (u16) ((targetAddr >> 0) & 0x00FFFF);
	u16 blockbank = (u16) ((targetAddr >> 16) & 0x000FFF);
	int status;
	unsigned long end;

	mutex_lock(&state->mutex);
	do {
		status = Write16_0(state, SIO_BL_MODE__A, SIO_BL_MODE_DIRECT);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_BL_TGT_HDR__A, blockbank);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_BL_TGT_ADDR__A, offset);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_BL_SRC_ADDR__A, romOffset);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_BL_SRC_LEN__A, nrOfElements);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_BL_ENABLE__A, SIO_BL_ENABLE_ON);
		if (status < 0)
			break;

		end = jiffies + msecs_to_jiffies(timeOut);
		do {
			status = Read16_0(state, SIO_BL_STATUS__A, &blStatus);
			if (status < 0)
				break;
		} while ((blStatus == 0x1) && time_is_after_jiffies(end));
		if (blStatus == 0x1) {
			printk(KERN_ERR "drxk: SIO not ready\n");
			mutex_unlock(&state->mutex);
			return -1;
		}
	} while (0);
	mutex_unlock(&state->mutex);
	return status;

}

static int ADCSyncMeasurement(struct drxk_state *state, u16 *count)
{
	u16 data = 0;
	int status;

	do {
		/* Start measurement */
		status = Write16_0(state, IQM_AF_COMM_EXEC__A, IQM_AF_COMM_EXEC_ACTIVE);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_AF_START_LOCK__A, 1);
		if (status < 0)
			break;

		*count = 0;
		status = Read16_0(state, IQM_AF_PHASE0__A, &data);
		if (status < 0)
			break;
		if (data == 127)
			*count = *count + 1;
		status = Read16_0(state, IQM_AF_PHASE1__A, &data);
		if (status < 0)
			break;
		if (data == 127)
			*count = *count + 1;
		status = Read16_0(state, IQM_AF_PHASE2__A, &data);
		if (status < 0)
			break;
		if (data == 127)
			*count = *count + 1;
	} while (0);
	return status;
}

static int ADCSynchronization(struct drxk_state *state)
{
	u16 count = 0;
	int status;

	do {
		status = ADCSyncMeasurement(state, &count);
		if (status < 0)
			break;

		if (count == 1) {
			/* Try sampling on a diffrent edge */
			u16 clkNeg = 0;

			status = Read16_0(state, IQM_AF_CLKNEG__A, &clkNeg);
			if (status < 0)
				break;
			if ((clkNeg | IQM_AF_CLKNEG_CLKNEGDATA__M) ==
			    IQM_AF_CLKNEG_CLKNEGDATA_CLK_ADC_DATA_POS) {
				clkNeg &= (~(IQM_AF_CLKNEG_CLKNEGDATA__M));
				clkNeg |=
				    IQM_AF_CLKNEG_CLKNEGDATA_CLK_ADC_DATA_NEG;
			} else {
				clkNeg &= (~(IQM_AF_CLKNEG_CLKNEGDATA__M));
				clkNeg |=
				    IQM_AF_CLKNEG_CLKNEGDATA_CLK_ADC_DATA_POS;
			}
			status = Write16_0(state, IQM_AF_CLKNEG__A, clkNeg);
			if (status < 0)
				break;
			status = ADCSyncMeasurement(state, &count);
			if (status < 0)
				break;
		}

		if (count < 2)
			status = -1;
	} while (0);
	return status;
}

static int SetFrequencyShifter(struct drxk_state *state,
			       u16 intermediateFreqkHz,
			       s32 tunerFreqOffset, bool isDTV)
{
	bool selectPosImage = false;
	u32 rfFreqResidual = tunerFreqOffset;
	u32 fmFrequencyShift = 0;
	bool tunerMirror = !state->m_bMirrorFreqSpect;
	u32 adcFreq;
	bool adcFlip;
	int status;
	u32 ifFreqActual;
	u32 samplingFrequency = (u32) (state->m_sysClockFreq / 3);
	u32 frequencyShift;
	bool imageToSelect;

	/*
	   Program frequency shifter
	   No need to account for mirroring on RF
	 */
	if (isDTV) {
		if ((state->m_OperationMode == OM_QAM_ITU_A) ||
		    (state->m_OperationMode == OM_QAM_ITU_C) ||
		    (state->m_OperationMode == OM_DVBT))
			selectPosImage = true;
		else
			selectPosImage = false;
	}
	if (tunerMirror)
		/* tuner doesn't mirror */
		ifFreqActual = intermediateFreqkHz +
		    rfFreqResidual + fmFrequencyShift;
	else
		/* tuner mirrors */
		ifFreqActual = intermediateFreqkHz -
		    rfFreqResidual - fmFrequencyShift;
	if (ifFreqActual > samplingFrequency / 2) {
		/* adc mirrors */
		adcFreq = samplingFrequency - ifFreqActual;
		adcFlip = true;
	} else {
		/* adc doesn't mirror */
		adcFreq = ifFreqActual;
		adcFlip = false;
	}

	frequencyShift = adcFreq;
	imageToSelect = state->m_rfmirror ^ tunerMirror ^
	    adcFlip ^ selectPosImage;
	state->m_IqmFsRateOfs =
	    Frac28a((frequencyShift), samplingFrequency);

	if (imageToSelect)
		state->m_IqmFsRateOfs = ~state->m_IqmFsRateOfs + 1;

	/* Program frequency shifter with tuner offset compensation */
	/* frequencyShift += tunerFreqOffset; TODO */
	status = Write32(state, IQM_FS_RATE_OFS_LO__A,
			 state->m_IqmFsRateOfs, 0);
	return status;
}

static int InitAGC(struct drxk_state *state, bool isDTV)
{
	u16 ingainTgt = 0;
	u16 ingainTgtMin = 0;
	u16 ingainTgtMax = 0;
	u16 clpCyclen = 0;
	u16 clpSumMin = 0;
	u16 clpDirTo = 0;
	u16 snsSumMin = 0;
	u16 snsSumMax = 0;
	u16 clpSumMax = 0;
	u16 snsDirTo = 0;
	u16 kiInnergainMin = 0;
	u16 ifIaccuHiTgt = 0;
	u16 ifIaccuHiTgtMin = 0;
	u16 ifIaccuHiTgtMax = 0;
	u16 data = 0;
	u16 fastClpCtrlDelay = 0;
	u16 clpCtrlMode = 0;
	int status = 0;

	do {
		/* Common settings */
		snsSumMax = 1023;
		ifIaccuHiTgtMin = 2047;
		clpCyclen = 500;
		clpSumMax = 1023;

		if (IsQAM(state)) {
			/* Standard specific settings */
			clpSumMin = 8;
			clpDirTo = (u16) -9;
			clpCtrlMode = 0;
			snsSumMin = 8;
			snsDirTo = (u16) -9;
			kiInnergainMin = (u16) -1030;
		} else
			status = -1;
		status = (status);
		if (status < 0)
			break;
		if (IsQAM(state)) {
			ifIaccuHiTgtMax = 0x2380;
			ifIaccuHiTgt = 0x2380;
			ingainTgtMin = 0x0511;
			ingainTgt = 0x0511;
			ingainTgtMax = 5119;
			fastClpCtrlDelay =
			    state->m_qamIfAgcCfg.FastClipCtrlDelay;
		} else {
			ifIaccuHiTgtMax = 0x1200;
			ifIaccuHiTgt = 0x1200;
			ingainTgtMin = 13424;
			ingainTgt = 13424;
			ingainTgtMax = 30000;
			fastClpCtrlDelay =
			    state->m_dvbtIfAgcCfg.FastClipCtrlDelay;
		}
		status = Write16_0(state, SCU_RAM_AGC_FAST_CLP_CTRL_DELAY__A, fastClpCtrlDelay);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_AGC_CLP_CTRL_MODE__A, clpCtrlMode);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_INGAIN_TGT__A, ingainTgt);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_INGAIN_TGT_MIN__A, ingainTgtMin);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_INGAIN_TGT_MAX__A, ingainTgtMax);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_IF_IACCU_HI_TGT_MIN__A, ifIaccuHiTgtMin);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_IF_IACCU_HI_TGT_MAX__A, ifIaccuHiTgtMax);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_IF_IACCU_HI__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_IF_IACCU_LO__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_RF_IACCU_HI__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_RF_IACCU_LO__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_CLP_SUM_MAX__A, clpSumMax);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_SNS_SUM_MAX__A, snsSumMax);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_AGC_KI_INNERGAIN_MIN__A, kiInnergainMin);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_IF_IACCU_HI_TGT__A, ifIaccuHiTgt);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_CLP_CYCLEN__A, clpCyclen);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_AGC_RF_SNS_DEV_MAX__A, 1023);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_RF_SNS_DEV_MIN__A, (u16) -1023);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_FAST_SNS_CTRL_DELAY__A, 50);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_AGC_KI_MAXMINGAIN_TH__A, 20);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_CLP_SUM_MIN__A, clpSumMin);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_SNS_SUM_MIN__A, snsSumMin);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_CLP_DIR_TO__A, clpDirTo);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_SNS_DIR_TO__A, snsDirTo);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_KI_MINGAIN__A, 0x7fff);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_KI_MAXGAIN__A, 0x0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_KI_MIN__A, 0x0117);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_KI_MAX__A, 0x0657);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_CLP_SUM__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_CLP_CYCCNT__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_CLP_DIR_WD__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_CLP_DIR_STP__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_SNS_SUM__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_SNS_CYCCNT__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_SNS_DIR_WD__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_SNS_DIR_STP__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_SNS_CYCLEN__A, 500);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_KI_CYCLEN__A, 500);
		if (status < 0)
			break;

		/* Initialize inner-loop KI gain factors */
		status = Read16_0(state, SCU_RAM_AGC_KI__A, &data);
		if (status < 0)
			break;
		if (IsQAM(state)) {
			data = 0x0657;
			data &= ~SCU_RAM_AGC_KI_RF__M;
			data |= (DRXK_KI_RAGC_QAM << SCU_RAM_AGC_KI_RF__B);
			data &= ~SCU_RAM_AGC_KI_IF__M;
			data |= (DRXK_KI_IAGC_QAM << SCU_RAM_AGC_KI_IF__B);
		}
		status = Write16_0(state, SCU_RAM_AGC_KI__A, data);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int DVBTQAMGetAccPktErr(struct drxk_state *state, u16 *packetErr)
{
	int status;

	do {
		if (packetErr == NULL) {
			status = Write16_0(state, SCU_RAM_FEC_ACCUM_PKT_FAILURES__A, 0);
			if (status < 0)
				break;
		} else {
			status = Read16_0(state, SCU_RAM_FEC_ACCUM_PKT_FAILURES__A, packetErr);
			if (status < 0)
				break;
		}
	} while (0);
	return status;
}

static int DVBTScCommand(struct drxk_state *state,
			 u16 cmd, u16 subcmd,
			 u16 param0, u16 param1, u16 param2,
			 u16 param3, u16 param4)
{
	u16 curCmd = 0;
	u16 errCode = 0;
	u16 retryCnt = 0;
	u16 scExec = 0;
	int status;

	status = Read16_0(state, OFDM_SC_COMM_EXEC__A, &scExec);
	if (scExec != 1) {
		/* SC is not running */
		return -1;
	}

	/* Wait until sc is ready to receive command */
	retryCnt = 0;
	do {
		msleep(1);
		status = Read16_0(state, OFDM_SC_RA_RAM_CMD__A, &curCmd);
		retryCnt++;
	} while ((curCmd != 0) && (retryCnt < DRXK_MAX_RETRIES));
	if (retryCnt >= DRXK_MAX_RETRIES)
		return -1;
	/* Write sub-command */
	switch (cmd) {
		/* All commands using sub-cmd */
	case OFDM_SC_RA_RAM_CMD_PROC_START:
	case OFDM_SC_RA_RAM_CMD_SET_PREF_PARAM:
	case OFDM_SC_RA_RAM_CMD_PROGRAM_PARAM:
		status =
		    Write16_0(state, OFDM_SC_RA_RAM_CMD_ADDR__A, subcmd);
		break;
	default:
		/* Do nothing */
		break;
	}			/* switch (cmd->cmd) */

	/* Write needed parameters and the command */
	switch (cmd) {
		/* All commands using 5 parameters */
		/* All commands using 4 parameters */
		/* All commands using 3 parameters */
		/* All commands using 2 parameters */
	case OFDM_SC_RA_RAM_CMD_PROC_START:
	case OFDM_SC_RA_RAM_CMD_SET_PREF_PARAM:
	case OFDM_SC_RA_RAM_CMD_PROGRAM_PARAM:
		status =
		    Write16_0(state, OFDM_SC_RA_RAM_PARAM1__A, param1);
		/* All commands using 1 parameters */
	case OFDM_SC_RA_RAM_CMD_SET_ECHO_TIMING:
	case OFDM_SC_RA_RAM_CMD_USER_IO:
		status =
		    Write16_0(state, OFDM_SC_RA_RAM_PARAM0__A, param0);
		/* All commands using 0 parameters */
	case OFDM_SC_RA_RAM_CMD_GET_OP_PARAM:
	case OFDM_SC_RA_RAM_CMD_NULL:
		/* Write command */
		status = Write16_0(state, OFDM_SC_RA_RAM_CMD__A, cmd);
		break;
	default:
		/* Unknown command */
		return -EINVAL;
	}			/* switch (cmd->cmd) */

	/* Wait until sc is ready processing command */
	retryCnt = 0;
	do {
		msleep(1);
		status = Read16_0(state, OFDM_SC_RA_RAM_CMD__A, &curCmd);
		retryCnt++;
	} while ((curCmd != 0) && (retryCnt < DRXK_MAX_RETRIES));
	if (retryCnt >= DRXK_MAX_RETRIES)
		return -1;

	/* Check for illegal cmd */
	status = Read16_0(state, OFDM_SC_RA_RAM_CMD_ADDR__A, &errCode);
	if (errCode == 0xFFFF) {
		/* illegal command */
		return -EINVAL;
	}

	/* Retreive results parameters from SC */
	switch (cmd) {
		/* All commands yielding 5 results */
		/* All commands yielding 4 results */
		/* All commands yielding 3 results */
		/* All commands yielding 2 results */
		/* All commands yielding 1 result */
	case OFDM_SC_RA_RAM_CMD_USER_IO:
	case OFDM_SC_RA_RAM_CMD_GET_OP_PARAM:
		status =
		    Read16_0(state, OFDM_SC_RA_RAM_PARAM0__A, &(param0));
		/* All commands yielding 0 results */
	case OFDM_SC_RA_RAM_CMD_SET_ECHO_TIMING:
	case OFDM_SC_RA_RAM_CMD_SET_TIMER:
	case OFDM_SC_RA_RAM_CMD_PROC_START:
	case OFDM_SC_RA_RAM_CMD_SET_PREF_PARAM:
	case OFDM_SC_RA_RAM_CMD_PROGRAM_PARAM:
	case OFDM_SC_RA_RAM_CMD_NULL:
		break;
	default:
		/* Unknown command */
		return -EINVAL;
		break;
	}			/* switch (cmd->cmd) */
	return status;
}

static int PowerUpDVBT(struct drxk_state *state)
{
	enum DRXPowerMode powerMode = DRX_POWER_UP;
	int status;

	do {
		status = CtrlPowerMode(state, &powerMode);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int DVBTCtrlSetIncEnable(struct drxk_state *state, bool *enabled)
{
	int status;

	if (*enabled == true)
		status = Write16_0(state, IQM_CF_BYPASSDET__A, 0);
	else
		status = Write16_0(state, IQM_CF_BYPASSDET__A, 1);

	return status;
}

#define DEFAULT_FR_THRES_8K     4000
static int DVBTCtrlSetFrEnable(struct drxk_state *state, bool *enabled)
{

	int status;

	if (*enabled == true) {
		/* write mask to 1 */
		status = Write16_0(state, OFDM_SC_RA_RAM_FR_THRES_8K__A,
				   DEFAULT_FR_THRES_8K);
	} else {
		/* write mask to 0 */
		status = Write16_0(state, OFDM_SC_RA_RAM_FR_THRES_8K__A, 0);
	}

	return status;
}

static int DVBTCtrlSetEchoThreshold(struct drxk_state *state,
				    struct DRXKCfgDvbtEchoThres_t *echoThres)
{
	u16 data = 0;
	int status;

	do {
		status = Read16_0(state, OFDM_SC_RA_RAM_ECHO_THRES__A, &data);
		if (status < 0)
			break;

		switch (echoThres->fftMode) {
		case DRX_FFTMODE_2K:
			data &= ~OFDM_SC_RA_RAM_ECHO_THRES_2K__M;
			data |=
			    ((echoThres->threshold <<
			      OFDM_SC_RA_RAM_ECHO_THRES_2K__B)
			     & (OFDM_SC_RA_RAM_ECHO_THRES_2K__M));
			break;
		case DRX_FFTMODE_8K:
			data &= ~OFDM_SC_RA_RAM_ECHO_THRES_8K__M;
			data |=
			    ((echoThres->threshold <<
			      OFDM_SC_RA_RAM_ECHO_THRES_8K__B)
			     & (OFDM_SC_RA_RAM_ECHO_THRES_8K__M));
			break;
		default:
			return -1;
			break;
		}

		status = Write16_0(state, OFDM_SC_RA_RAM_ECHO_THRES__A, data);
		if (status < 0)
			break;
	} while (0);

	return status;
}

static int DVBTCtrlSetSqiSpeed(struct drxk_state *state,
			       enum DRXKCfgDvbtSqiSpeed *speed)
{
	int status;

	switch (*speed) {
	case DRXK_DVBT_SQI_SPEED_FAST:
	case DRXK_DVBT_SQI_SPEED_MEDIUM:
	case DRXK_DVBT_SQI_SPEED_SLOW:
		break;
	default:
		return -EINVAL;
	}
	status = Write16_0(state, SCU_RAM_FEC_PRE_RS_BER_FILTER_SH__A,
			   (u16) *speed);
	return status;
}

/*============================================================================*/

/**
* \brief Activate DVBT specific presets
* \param demod instance of demodulator.
* \return DRXStatus_t.
*
* Called in DVBTSetStandard
*
*/
static int DVBTActivatePresets(struct drxk_state *state)
{
	int status;

	struct DRXKCfgDvbtEchoThres_t echoThres2k = { 0, DRX_FFTMODE_2K };
	struct DRXKCfgDvbtEchoThres_t echoThres8k = { 0, DRX_FFTMODE_8K };

	do {
		bool setincenable = false;
		bool setfrenable = true;
		status = DVBTCtrlSetIncEnable(state, &setincenable);
		if (status < 0)
			break;
		status = DVBTCtrlSetFrEnable(state, &setfrenable);
		if (status < 0)
			break;
		status = DVBTCtrlSetEchoThreshold(state, &echoThres2k);
		if (status < 0)
			break;
		status = DVBTCtrlSetEchoThreshold(state, &echoThres8k);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_AGC_INGAIN_TGT_MAX__A, state->m_dvbtIfAgcCfg.IngainTgtMax);
		if (status < 0)
			break;
	} while (0);

	return status;
}

/*============================================================================*/

/**
* \brief Initialize channelswitch-independent settings for DVBT.
* \param demod instance of demodulator.
* \return DRXStatus_t.
*
* For ROM code channel filter taps are loaded from the bootloader. For microcode
* the DVB-T taps from the drxk_filters.h are used.
*/
static int SetDVBTStandard(struct drxk_state *state,
			   enum OperationMode oMode)
{
	u16 cmdResult = 0;
	u16 data = 0;
	int status;

	PowerUpDVBT(state);

	do {
		/* added antenna switch */
		SwitchAntennaToDVBT(state);
		/* send OFDM reset command */
		status = scu_command(state, SCU_RAM_COMMAND_STANDARD_OFDM | SCU_RAM_COMMAND_CMD_DEMOD_RESET, 0, NULL, 1, &cmdResult);
		if (status < 0)
			break;

		/* send OFDM setenv command */
		status = scu_command(state, SCU_RAM_COMMAND_STANDARD_OFDM | SCU_RAM_COMMAND_CMD_DEMOD_SET_ENV, 0, NULL, 1, &cmdResult);
		if (status < 0)
			break;

		/* reset datapath for OFDM, processors first */
		status = Write16_0(state, OFDM_SC_COMM_EXEC__A, OFDM_SC_COMM_EXEC_STOP);
		if (status < 0)
			break;
		status = Write16_0(state, OFDM_LC_COMM_EXEC__A, OFDM_LC_COMM_EXEC_STOP);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_COMM_EXEC__A, IQM_COMM_EXEC_B_STOP);
		if (status < 0)
			break;

		/* IQM setup */
		/* synchronize on ofdstate->m_festart */
		status = Write16_0(state, IQM_AF_UPD_SEL__A, 1);
		if (status < 0)
			break;
		/* window size for clipping ADC detection */
		status = Write16_0(state, IQM_AF_CLP_LEN__A, 0);
		if (status < 0)
			break;
		/* window size for for sense pre-SAW detection */
		status = Write16_0(state, IQM_AF_SNS_LEN__A, 0);
		if (status < 0)
			break;
		/* sense threshold for sense pre-SAW detection */
		status = Write16_0(state, IQM_AF_AMUX__A, IQM_AF_AMUX_SIGNAL2ADC);
		if (status < 0)
			break;
		status = SetIqmAf(state, true);
		if (status < 0)
			break;

		status = Write16_0(state, IQM_AF_AGC_RF__A, 0);
		if (status < 0)
			break;

		/* Impulse noise cruncher setup */
		status = Write16_0(state, IQM_AF_INC_LCT__A, 0);	/* crunch in IQM_CF */
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_DET_LCT__A, 0);	/* detect in IQM_CF */
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_WND_LEN__A, 3);	/* peak detector window length */
		if (status < 0)
			break;

		status = Write16_0(state, IQM_RC_STRETCH__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_OUT_ENA__A, 0x4);	/* enable output 2 */
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_DS_ENA__A, 0x4);	/* decimate output 2 */
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_SCALE__A, 1600);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_SCALE_SH__A, 0);
		if (status < 0)
			break;

		/* virtual clipping threshold for clipping ADC detection */
		status = Write16_0(state, IQM_AF_CLP_TH__A, 448);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_DATATH__A, 495);	/* crunching threshold */
		if (status < 0)
			break;

		status = BLChainCmd(state, DRXK_BL_ROM_OFFSET_TAPS_DVBT, DRXK_BLCC_NR_ELEMENTS_TAPS, DRXK_BLC_TIMEOUT);
		if (status < 0)
			break;

		status = Write16_0(state, IQM_CF_PKDTH__A, 2);	/* peak detector threshold */
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_POW_MEAS_LEN__A, 2);
		if (status < 0)
			break;
		/* enable power measurement interrupt */
		status = Write16_0(state, IQM_CF_COMM_INT_MSK__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_COMM_EXEC__A, IQM_COMM_EXEC_B_ACTIVE);
		if (status < 0)
			break;

		/* IQM will not be reset from here, sync ADC and update/init AGC */
		status = ADCSynchronization(state);
		if (status < 0)
			break;
		status = SetPreSaw(state, &state->m_dvbtPreSawCfg);
		if (status < 0)
			break;

		/* Halt SCU to enable safe non-atomic accesses */
		status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_HOLD);
		if (status < 0)
			break;

		status = SetAgcRf(state, &state->m_dvbtRfAgcCfg, true);
		if (status < 0)
			break;
		status = SetAgcIf(state, &state->m_dvbtIfAgcCfg, true);
		if (status < 0)
			break;

		/* Set Noise Estimation notch width and enable DC fix */
		status = Read16_0(state, OFDM_SC_RA_RAM_CONFIG__A, &data);
		if (status < 0)
			break;
		data |= OFDM_SC_RA_RAM_CONFIG_NE_FIX_ENABLE__M;
		status = Write16_0(state, OFDM_SC_RA_RAM_CONFIG__A, data);
		if (status < 0)
			break;

		/* Activate SCU to enable SCU commands */
		status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_ACTIVE);
		if (status < 0)
			break;

		if (!state->m_DRXK_A3_ROM_CODE) {
			/* AGCInit() is not done for DVBT, so set agcFastClipCtrlDelay  */
			status = Write16_0(state, SCU_RAM_AGC_FAST_CLP_CTRL_DELAY__A, state->m_dvbtIfAgcCfg.FastClipCtrlDelay);
			if (status < 0)
				break;
		}

		/* OFDM_SC setup */
#ifdef COMPILE_FOR_NONRT
		status = Write16_0(state, OFDM_SC_RA_RAM_BE_OPT_DELAY__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, OFDM_SC_RA_RAM_BE_OPT_INIT_DELAY__A, 2);
		if (status < 0)
			break;
#endif

		/* FEC setup */
		status = Write16_0(state, FEC_DI_INPUT_CTL__A, 1);	/* OFDM input */
		if (status < 0)
			break;


#ifdef COMPILE_FOR_NONRT
		status = Write16_0(state, FEC_RS_MEASUREMENT_PERIOD__A, 0x400);
		if (status < 0)
			break;
#else
		status = Write16_0(state, FEC_RS_MEASUREMENT_PERIOD__A, 0x1000);
		if (status < 0)
			break;
#endif
		status = Write16_0(state, FEC_RS_MEASUREMENT_PRESCALE__A, 0x0001);
		if (status < 0)
			break;

		/* Setup MPEG bus */
		status = MPEGTSDtoSetup(state, OM_DVBT);
		if (status < 0)
			break;
		/* Set DVBT Presets */
		status = DVBTActivatePresets(state);
		if (status < 0)
			break;

	} while (0);

	if (status < 0)
		printk(KERN_ERR "drxk: %s status - %08x\n", __func__, status);

	return status;
}

/*============================================================================*/
/**
* \brief Start dvbt demodulating for channel.
* \param demod instance of demodulator.
* \return DRXStatus_t.
*/
static int DVBTStart(struct drxk_state *state)
{
	u16 param1;
	int status;
	/* DRXKOfdmScCmd_t scCmd; */

	/* Start correct processes to get in lock */
	/* DRXK: OFDM_SC_RA_RAM_PROC_LOCKTRACK is no longer in mapfile! */
	do {
		param1 = OFDM_SC_RA_RAM_LOCKTRACK_MIN;
		status = DVBTScCommand(state, OFDM_SC_RA_RAM_CMD_PROC_START, 0, OFDM_SC_RA_RAM_SW_EVENT_RUN_NMASK__M, param1, 0, 0, 0);
		if (status < 0)
			break;
		/* Start FEC OC */
		status = MPEGTSStart(state);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_COMM_EXEC__A, FEC_COMM_EXEC_ACTIVE);
		if (status < 0)
			break;
	} while (0);
	return status;
}


/*============================================================================*/

/**
* \brief Set up dvbt demodulator for channel.
* \param demod instance of demodulator.
* \return DRXStatus_t.
* // original DVBTSetChannel()
*/
static int SetDVBT(struct drxk_state *state, u16 IntermediateFreqkHz,
		   s32 tunerFreqOffset)
{
	u16 cmdResult = 0;
	u16 transmissionParams = 0;
	u16 operationMode = 0;
	u32 iqmRcRateOfs = 0;
	u32 bandwidth = 0;
	u16 param1;
	int status;

	/* printk(KERN_DEBUG "drxk: %s IF =%d, TFO = %d\n", __func__, IntermediateFreqkHz, tunerFreqOffset); */
	do {
		status = scu_command(state, SCU_RAM_COMMAND_STANDARD_OFDM | SCU_RAM_COMMAND_CMD_DEMOD_STOP, 0, NULL, 1, &cmdResult);
		if (status < 0)
			break;

		/* Halt SCU to enable safe non-atomic accesses */
		status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_HOLD);
		if (status < 0)
			break;

		/* Stop processors */
		status = Write16_0(state, OFDM_SC_COMM_EXEC__A, OFDM_SC_COMM_EXEC_STOP);
		if (status < 0)
			break;
		status = Write16_0(state, OFDM_LC_COMM_EXEC__A, OFDM_LC_COMM_EXEC_STOP);
		if (status < 0)
			break;

		/* Mandatory fix, always stop CP, required to set spl offset back to
		   hardware default (is set to 0 by ucode during pilot detection */
		status = Write16_0(state, OFDM_CP_COMM_EXEC__A, OFDM_CP_COMM_EXEC_STOP);
		if (status < 0)
			break;

		/*== Write channel settings to device =====================================*/

		/* mode */
		switch (state->param.u.ofdm.transmission_mode) {
		case TRANSMISSION_MODE_AUTO:
		default:
			operationMode |= OFDM_SC_RA_RAM_OP_AUTO_MODE__M;
			/* fall through , try first guess DRX_FFTMODE_8K */
		case TRANSMISSION_MODE_8K:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_MODE_8K;
			break;
		case TRANSMISSION_MODE_2K:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_MODE_2K;
			break;
		}

		/* guard */
		switch (state->param.u.ofdm.guard_interval) {
		default:
		case GUARD_INTERVAL_AUTO:
			operationMode |= OFDM_SC_RA_RAM_OP_AUTO_GUARD__M;
			/* fall through , try first guess DRX_GUARD_1DIV4 */
		case GUARD_INTERVAL_1_4:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_GUARD_4;
			break;
		case GUARD_INTERVAL_1_32:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_GUARD_32;
			break;
		case GUARD_INTERVAL_1_16:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_GUARD_16;
			break;
		case GUARD_INTERVAL_1_8:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_GUARD_8;
			break;
		}

		/* hierarchy */
		switch (state->param.u.ofdm.hierarchy_information) {
		case HIERARCHY_AUTO:
		case HIERARCHY_NONE:
		default:
			operationMode |= OFDM_SC_RA_RAM_OP_AUTO_HIER__M;
			/* fall through , try first guess SC_RA_RAM_OP_PARAM_HIER_NO */
			/* transmissionParams |= OFDM_SC_RA_RAM_OP_PARAM_HIER_NO; */
			/* break; */
		case HIERARCHY_1:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_HIER_A1;
			break;
		case HIERARCHY_2:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_HIER_A2;
			break;
		case HIERARCHY_4:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_HIER_A4;
			break;
		}


		/* constellation */
		switch (state->param.u.ofdm.constellation) {
		case QAM_AUTO:
		default:
			operationMode |= OFDM_SC_RA_RAM_OP_AUTO_CONST__M;
			/* fall through , try first guess DRX_CONSTELLATION_QAM64 */
		case QAM_64:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_CONST_QAM64;
			break;
		case QPSK:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_CONST_QPSK;
			break;
		case QAM_16:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_CONST_QAM16;
			break;
		}
#if 0
		/* No hierachical channels support in BDA */
		/* Priority (only for hierarchical channels) */
		switch (channel->priority) {
		case DRX_PRIORITY_LOW:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_PRIO_LO;
			WR16(devAddr, OFDM_EC_SB_PRIOR__A,
			     OFDM_EC_SB_PRIOR_LO);
			break;
		case DRX_PRIORITY_HIGH:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_PRIO_HI;
			WR16(devAddr, OFDM_EC_SB_PRIOR__A,
			     OFDM_EC_SB_PRIOR_HI));
			break;
		case DRX_PRIORITY_UNKNOWN:	/* fall through */
		default:
			return DRX_STS_INVALID_ARG;
			break;
		}
#else
		/* Set Priorty high */
		transmissionParams |= OFDM_SC_RA_RAM_OP_PARAM_PRIO_HI;
		status = Write16_0(state, OFDM_EC_SB_PRIOR__A, OFDM_EC_SB_PRIOR_HI);
		if (status < 0)
			break;
#endif

		/* coderate */
		switch (state->param.u.ofdm.code_rate_HP) {
		case FEC_AUTO:
		default:
			operationMode |= OFDM_SC_RA_RAM_OP_AUTO_RATE__M;
			/* fall through , try first guess DRX_CODERATE_2DIV3 */
		case FEC_2_3:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_RATE_2_3;
			break;
		case FEC_1_2:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_RATE_1_2;
			break;
		case FEC_3_4:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_RATE_3_4;
			break;
		case FEC_5_6:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_RATE_5_6;
			break;
		case FEC_7_8:
			transmissionParams |=
			    OFDM_SC_RA_RAM_OP_PARAM_RATE_7_8;
			break;
		}

		/* SAW filter selection: normaly not necesarry, but if wanted
		   the application can select a SAW filter via the driver by using UIOs */
		/* First determine real bandwidth (Hz) */
		/* Also set delay for impulse noise cruncher */
		/* Also set parameters for EC_OC fix, note EC_OC_REG_TMD_HIL_MAR is changed
		   by SC for fix for some 8K,1/8 guard but is restored by InitEC and ResetEC
		   functions */
		switch (state->param.u.ofdm.bandwidth) {
		case BANDWIDTH_AUTO:
		case BANDWIDTH_8_MHZ:
			bandwidth = DRXK_BANDWIDTH_8MHZ_IN_HZ;
			status = Write16_0(state, OFDM_SC_RA_RAM_SRMM_FIX_FACT_8K__A, 3052);
			if (status < 0)
				break;
			/* cochannel protection for PAL 8 MHz */
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_8K_PER_LEFT__A, 7);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_8K_PER_RIGHT__A, 7);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_2K_PER_LEFT__A, 7);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_2K_PER_RIGHT__A, 1);
			if (status < 0)
				break;
			break;
		case BANDWIDTH_7_MHZ:
			bandwidth = DRXK_BANDWIDTH_7MHZ_IN_HZ;
			status = Write16_0(state, OFDM_SC_RA_RAM_SRMM_FIX_FACT_8K__A, 3491);
			if (status < 0)
				break;
			/* cochannel protection for PAL 7 MHz */
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_8K_PER_LEFT__A, 8);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_8K_PER_RIGHT__A, 8);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_2K_PER_LEFT__A, 4);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_2K_PER_RIGHT__A, 1);
			if (status < 0)
				break;
			break;
		case BANDWIDTH_6_MHZ:
			bandwidth = DRXK_BANDWIDTH_6MHZ_IN_HZ;
			status = Write16_0(state, OFDM_SC_RA_RAM_SRMM_FIX_FACT_8K__A, 4073);
			if (status < 0)
				break;
			/* cochannel protection for NTSC 6 MHz */
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_8K_PER_LEFT__A, 19);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_8K_PER_RIGHT__A, 19);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_2K_PER_LEFT__A, 14);
			if (status < 0)
				break;
			status = Write16_0(state, OFDM_SC_RA_RAM_NI_INIT_2K_PER_RIGHT__A, 1);
			if (status < 0)
				break;
			break;
		default:
			return -EINVAL;
		}

		if (iqmRcRateOfs == 0) {
			/* Now compute IQM_RC_RATE_OFS
			   (((SysFreq/BandWidth)/2)/2) -1) * 2^23)
			   =>
			   ((SysFreq / BandWidth) * (2^21)) - (2^23)
			 */
			/* (SysFreq / BandWidth) * (2^28)  */
			/* assert (MAX(sysClk)/MIN(bandwidth) < 16)
			   => assert(MAX(sysClk) < 16*MIN(bandwidth))
			   => assert(109714272 > 48000000) = true so Frac 28 can be used  */
			iqmRcRateOfs = Frac28a((u32)
					       ((state->m_sysClockFreq *
						 1000) / 3), bandwidth);
			/* (SysFreq / BandWidth) * (2^21), rounding before truncating  */
			if ((iqmRcRateOfs & 0x7fL) >= 0x40)
				iqmRcRateOfs += 0x80L;
			iqmRcRateOfs = iqmRcRateOfs >> 7;
			/* ((SysFreq / BandWidth) * (2^21)) - (2^23)  */
			iqmRcRateOfs = iqmRcRateOfs - (1 << 23);
		}

		iqmRcRateOfs &=
		    ((((u32) IQM_RC_RATE_OFS_HI__M) <<
		      IQM_RC_RATE_OFS_LO__W) | IQM_RC_RATE_OFS_LO__M);
		status = Write32(state, IQM_RC_RATE_OFS_LO__A, iqmRcRateOfs, 0);
		if (status < 0)
			break;

		/* Bandwidth setting done */

#if 0
		status = DVBTSetFrequencyShift(demod, channel, tunerOffset);
		if (status < 0)
			break;
#endif
		status = SetFrequencyShifter(state, IntermediateFreqkHz, tunerFreqOffset, true);
		if (status < 0)
			break;

		/*== Start SC, write channel settings to SC ===============================*/

		/* Activate SCU to enable SCU commands */
		status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_ACTIVE);
		if (status < 0)
			break;

		/* Enable SC after setting all other parameters */
		status = Write16_0(state, OFDM_SC_COMM_STATE__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, OFDM_SC_COMM_EXEC__A, 1);
		if (status < 0)
			break;


		status = scu_command(state, SCU_RAM_COMMAND_STANDARD_OFDM | SCU_RAM_COMMAND_CMD_DEMOD_START, 0, NULL, 1, &cmdResult);
		if (status < 0)
			break;

		/* Write SC parameter registers, set all AUTO flags in operation mode */
		param1 = (OFDM_SC_RA_RAM_OP_AUTO_MODE__M |
			  OFDM_SC_RA_RAM_OP_AUTO_GUARD__M |
			  OFDM_SC_RA_RAM_OP_AUTO_CONST__M |
			  OFDM_SC_RA_RAM_OP_AUTO_HIER__M |
			  OFDM_SC_RA_RAM_OP_AUTO_RATE__M);
		status =
		    DVBTScCommand(state, OFDM_SC_RA_RAM_CMD_SET_PREF_PARAM,
				  0, transmissionParams, param1, 0, 0, 0);
		if (!state->m_DRXK_A3_ROM_CODE)
			status = DVBTCtrlSetSqiSpeed(state, &state->m_sqiSpeed);
			if (status < 0)
				break;

	} while (0);

	return status;
}


/*============================================================================*/

/**
* \brief Retreive lock status .
* \param demod    Pointer to demodulator instance.
* \param lockStat Pointer to lock status structure.
* \return DRXStatus_t.
*
*/
static int GetDVBTLockStatus(struct drxk_state *state, u32 *pLockStatus)
{
	int status;
	const u16 mpeg_lock_mask = (OFDM_SC_RA_RAM_LOCK_MPEG__M |
				    OFDM_SC_RA_RAM_LOCK_FEC__M);
	const u16 fec_lock_mask = (OFDM_SC_RA_RAM_LOCK_FEC__M);
	const u16 demod_lock_mask = OFDM_SC_RA_RAM_LOCK_DEMOD__M;

	u16 ScRaRamLock = 0;
	u16 ScCommExec = 0;

	/* driver 0.9.0 */
	/* Check if SC is running */
	status = Read16_0(state, OFDM_SC_COMM_EXEC__A, &ScCommExec);
	if (ScCommExec == OFDM_SC_COMM_EXEC_STOP) {
		/* SC not active; return DRX_NOT_LOCKED */
		*pLockStatus = NOT_LOCKED;
		return status;
	}

	status = Read16_0(state, OFDM_SC_RA_RAM_LOCK__A, &ScRaRamLock);

	if ((ScRaRamLock & mpeg_lock_mask) == mpeg_lock_mask)
		*pLockStatus = MPEG_LOCK;
	else if ((ScRaRamLock & fec_lock_mask) == fec_lock_mask)
		*pLockStatus = FEC_LOCK;
	else if ((ScRaRamLock & demod_lock_mask) == demod_lock_mask)
		*pLockStatus = DEMOD_LOCK;
	else if (ScRaRamLock & OFDM_SC_RA_RAM_LOCK_NODVBT__M)
		*pLockStatus = NEVER_LOCK;
	else
		*pLockStatus = NOT_LOCKED;

	return status;
}

static int PowerUpQAM(struct drxk_state *state)
{
	enum DRXPowerMode powerMode = DRXK_POWER_DOWN_OFDM;
	int status = 0;

	do {
		status = CtrlPowerMode(state, &powerMode);
		if (status < 0)
			break;

	} while (0);

	return status;
}


/** Power Down QAM */
static int PowerDownQAM(struct drxk_state *state)
{
	u16 data = 0;
	u16 cmdResult;
	int status = 0;

	do {
		status = Read16_0(state, SCU_COMM_EXEC__A, &data);
		if (status < 0)
			break;
		if (data == SCU_COMM_EXEC_ACTIVE) {
			/*
			   STOP demodulator
			   QAM and HW blocks
			 */
			/* stop all comstate->m_exec */
			status = Write16_0(state, QAM_COMM_EXEC__A, QAM_COMM_EXEC_STOP);
			if (status < 0)
				break;
			status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM | SCU_RAM_COMMAND_CMD_DEMOD_STOP, 0, NULL, 1, &cmdResult);
			if (status < 0)
				break;
		}
		/* powerdown AFE                   */
		status = SetIqmAf(state, false);
		if (status < 0)
			break;
	} while (0);

	return status;
}

/*============================================================================*/

/**
* \brief Setup of the QAM Measurement intervals for signal quality
* \param demod instance of demod.
* \param constellation current constellation.
* \return DRXStatus_t.
*
*  NOTE:
*  Take into account that for certain settings the errorcounters can overflow.
*  The implementation does not check this.
*
*/
static int SetQAMMeasurement(struct drxk_state *state,
			     enum EDrxkConstellation constellation,
			     u32 symbolRate)
{
	u32 fecBitsDesired = 0;	/* BER accounting period */
	u32 fecRsPeriodTotal = 0;	/* Total period */
	u16 fecRsPrescale = 0;	/* ReedSolomon Measurement Prescale */
	u16 fecRsPeriod = 0;	/* Value for corresponding I2C register */
	int status = 0;

	fecRsPrescale = 1;

	do {

		/* fecBitsDesired = symbolRate [kHz] *
		   FrameLenght [ms] *
		   (constellation + 1) *
		   SyncLoss (== 1) *
		   ViterbiLoss (==1)
		 */
		switch (constellation) {
		case DRX_CONSTELLATION_QAM16:
			fecBitsDesired = 4 * symbolRate;
			break;
		case DRX_CONSTELLATION_QAM32:
			fecBitsDesired = 5 * symbolRate;
			break;
		case DRX_CONSTELLATION_QAM64:
			fecBitsDesired = 6 * symbolRate;
			break;
		case DRX_CONSTELLATION_QAM128:
			fecBitsDesired = 7 * symbolRate;
			break;
		case DRX_CONSTELLATION_QAM256:
			fecBitsDesired = 8 * symbolRate;
			break;
		default:
			status = -EINVAL;
		}
		status = status;
		if (status < 0)
			break;

		fecBitsDesired /= 1000;	/* symbolRate [Hz] -> symbolRate [kHz]  */
		fecBitsDesired *= 500;	/* meas. period [ms] */

		/* Annex A/C: bits/RsPeriod = 204 * 8 = 1632 */
		/* fecRsPeriodTotal = fecBitsDesired / 1632 */
		fecRsPeriodTotal = (fecBitsDesired / 1632UL) + 1;	/* roughly ceil */

		/* fecRsPeriodTotal =  fecRsPrescale * fecRsPeriod  */
		fecRsPrescale = 1 + (u16) (fecRsPeriodTotal >> 16);
		if (fecRsPrescale == 0) {
			/* Divide by zero (though impossible) */
			status = -1;
		}
		status = status;
		if (status < 0)
			break;
		fecRsPeriod =
		    ((u16) fecRsPeriodTotal +
		     (fecRsPrescale >> 1)) / fecRsPrescale;

		/* write corresponding registers */
		status = Write16_0(state, FEC_RS_MEASUREMENT_PERIOD__A, fecRsPeriod);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_RS_MEASUREMENT_PRESCALE__A, fecRsPrescale);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_OC_SNC_FAIL_PERIOD__A, fecRsPeriod);
		if (status < 0)
			break;

	} while (0);

	if (status < 0)
		printk(KERN_ERR "drxk: %s: status - %08x\n", __func__, status);

	return status;
}

static int SetQAM16(struct drxk_state *state)
{
	int status = 0;

	do {
		/* QAM Equalizer Setup */
		/* Equalizer */
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD0__A, 13517);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD1__A, 13517);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD2__A, 13517);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD3__A, 13517);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD4__A, 13517);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD5__A, 13517);
		if (status < 0)
			break;
		/* Decision Feedback Equalizer */
		status = Write16_0(state, QAM_DQ_QUAL_FUN0__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN1__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN2__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN3__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN4__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN5__A, 0);
		if (status < 0)
			break;

		status = Write16_0(state, QAM_SY_SYNC_HWM__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_AWM__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_LWM__A, 3);
		if (status < 0)
			break;

		/* QAM Slicer Settings */
		status = Write16_0(state, SCU_RAM_QAM_SL_SIG_POWER__A, DRXK_QAM_SL_SIG_POWER_QAM16);
		if (status < 0)
			break;

		/* QAM Loop Controller Coeficients */
		status = Write16_0(state, SCU_RAM_QAM_LC_CA_FINE__A, 15);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CA_COARSE__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_MEDIUM__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_COARSE__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_MEDIUM__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_COARSE__A, 16);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_LC_CP_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_MEDIUM__A, 20);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_COARSE__A, 80);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_MEDIUM__A, 20);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_COARSE__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_FINE__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_MEDIUM__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_COARSE__A, 32);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_MEDIUM__A, 10);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_COARSE__A, 10);
		if (status < 0)
			break;


		/* QAM State Machine (FSM) Thresholds */

		status = Write16_0(state, SCU_RAM_QAM_FSM_RTH__A, 140);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FTH__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_CTH__A, 95);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_PTH__A, 120);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_QTH__A, 230);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_MTH__A, 105);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_FSM_RATE_LIM__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_COUNT_LIM__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FREQ_LIM__A, 24);
		if (status < 0)
			break;


		/* QAM FSM Tracking Parameters */

		status = Write16_0(state, SCU_RAM_QAM_FSM_MEDIAN_AV_MULT__A, (u16) 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_RADIUS_AV_LIMIT__A, (u16) 220);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET1__A, (u16) 25);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET2__A, (u16) 6);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET3__A, (u16) -24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET4__A, (u16) -65);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET5__A, (u16) -127);
		if (status < 0)
			break;
	} while (0);

	return status;
}

/*============================================================================*/

/**
* \brief QAM32 specific setup
* \param demod instance of demod.
* \return DRXStatus_t.
*/
static int SetQAM32(struct drxk_state *state)
{
	int status = 0;

	do {
		/* QAM Equalizer Setup */
		/* Equalizer */
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD0__A, 6707);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD1__A, 6707);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD2__A, 6707);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD3__A, 6707);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD4__A, 6707);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD5__A, 6707);
		if (status < 0)
			break;

		/* Decision Feedback Equalizer */
		status = Write16_0(state, QAM_DQ_QUAL_FUN0__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN1__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN2__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN3__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN4__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN5__A, 0);
		if (status < 0)
			break;

		status = Write16_0(state, QAM_SY_SYNC_HWM__A, 6);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_AWM__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_LWM__A, 3);
		if (status < 0)
			break;

		/* QAM Slicer Settings */

		status = Write16_0(state, SCU_RAM_QAM_SL_SIG_POWER__A, DRXK_QAM_SL_SIG_POWER_QAM32);
		if (status < 0)
			break;


		/* QAM Loop Controller Coeficients */

		status = Write16_0(state, SCU_RAM_QAM_LC_CA_FINE__A, 15);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CA_COARSE__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_MEDIUM__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_COARSE__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_MEDIUM__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_COARSE__A, 16);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_LC_CP_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_MEDIUM__A, 20);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_COARSE__A, 80);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_MEDIUM__A, 20);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_COARSE__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_FINE__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_MEDIUM__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_COARSE__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_MEDIUM__A, 10);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_COARSE__A, 0);
		if (status < 0)
			break;


		/* QAM State Machine (FSM) Thresholds */

		status = Write16_0(state, SCU_RAM_QAM_FSM_RTH__A, 90);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FTH__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_CTH__A, 80);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_PTH__A, 100);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_QTH__A, 170);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_MTH__A, 100);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_FSM_RATE_LIM__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_COUNT_LIM__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FREQ_LIM__A, 10);
		if (status < 0)
			break;


		/* QAM FSM Tracking Parameters */

		status = Write16_0(state, SCU_RAM_QAM_FSM_MEDIAN_AV_MULT__A, (u16) 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_RADIUS_AV_LIMIT__A, (u16) 140);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET1__A, (u16) -8);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET2__A, (u16) -16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET3__A, (u16) -26);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET4__A, (u16) -56);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET5__A, (u16) -86);
		if (status < 0)
			break;
	} while (0);

	return status;
}

/*============================================================================*/

/**
* \brief QAM64 specific setup
* \param demod instance of demod.
* \return DRXStatus_t.
*/
static int SetQAM64(struct drxk_state *state)
{
	int status = 0;

	do {
		/* QAM Equalizer Setup */
		/* Equalizer */
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD0__A, 13336);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD1__A, 12618);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD2__A, 11988);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD3__A, 13809);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD4__A, 13809);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD5__A, 15609);
		if (status < 0)
			break;

		/* Decision Feedback Equalizer */
		status = Write16_0(state, QAM_DQ_QUAL_FUN0__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN1__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN2__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN3__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN4__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN5__A, 0);
		if (status < 0)
			break;

		status = Write16_0(state, QAM_SY_SYNC_HWM__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_AWM__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_LWM__A, 3);
		if (status < 0)
			break;

		/* QAM Slicer Settings */
		status = Write16_0(state, SCU_RAM_QAM_SL_SIG_POWER__A, DRXK_QAM_SL_SIG_POWER_QAM64);
		if (status < 0)
			break;


		/* QAM Loop Controller Coeficients */

		status = Write16_0(state, SCU_RAM_QAM_LC_CA_FINE__A, 15);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CA_COARSE__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_MEDIUM__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_COARSE__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_MEDIUM__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_COARSE__A, 16);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_LC_CP_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_MEDIUM__A, 30);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_COARSE__A, 100);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_MEDIUM__A, 30);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_COARSE__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_FINE__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_MEDIUM__A, 25);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_COARSE__A, 48);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_MEDIUM__A, 10);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_COARSE__A, 10);
		if (status < 0)
			break;


		/* QAM State Machine (FSM) Thresholds */

		status = Write16_0(state, SCU_RAM_QAM_FSM_RTH__A, 100);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FTH__A, 60);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_CTH__A, 80);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_PTH__A, 110);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_QTH__A, 200);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_MTH__A, 95);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_FSM_RATE_LIM__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_COUNT_LIM__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FREQ_LIM__A, 15);
		if (status < 0)
			break;


		/* QAM FSM Tracking Parameters */

		status = Write16_0(state, SCU_RAM_QAM_FSM_MEDIAN_AV_MULT__A, (u16) 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_RADIUS_AV_LIMIT__A, (u16) 141);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET1__A, (u16) 7);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET2__A, (u16) 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET3__A, (u16) -15);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET4__A, (u16) -45);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET5__A, (u16) -80);
		if (status < 0)
			break;
	} while (0);

	return status;
}

/*============================================================================*/

/**
* \brief QAM128 specific setup
* \param demod: instance of demod.
* \return DRXStatus_t.
*/
static int SetQAM128(struct drxk_state *state)
{
	int status = 0;

	do {
		/* QAM Equalizer Setup */
		/* Equalizer */
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD0__A, 6564);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD1__A, 6598);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD2__A, 6394);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD3__A, 6409);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD4__A, 6656);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD5__A, 7238);
		if (status < 0)
			break;

		/* Decision Feedback Equalizer */
		status = Write16_0(state, QAM_DQ_QUAL_FUN0__A, 6);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN1__A, 6);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN2__A, 6);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN3__A, 6);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN4__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN5__A, 0);
		if (status < 0)
			break;

		status = Write16_0(state, QAM_SY_SYNC_HWM__A, 6);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_AWM__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_LWM__A, 3);
		if (status < 0)
			break;


		/* QAM Slicer Settings */

		status = Write16_0(state, SCU_RAM_QAM_SL_SIG_POWER__A, DRXK_QAM_SL_SIG_POWER_QAM128);
		if (status < 0)
			break;


		/* QAM Loop Controller Coeficients */

		status = Write16_0(state, SCU_RAM_QAM_LC_CA_FINE__A, 15);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CA_COARSE__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_MEDIUM__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_COARSE__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_MEDIUM__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_COARSE__A, 16);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_LC_CP_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_MEDIUM__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_COARSE__A, 120);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_MEDIUM__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_COARSE__A, 60);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_FINE__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_MEDIUM__A, 25);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_COARSE__A, 64);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_MEDIUM__A, 10);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_COARSE__A, 0);
		if (status < 0)
			break;


		/* QAM State Machine (FSM) Thresholds */

		status = Write16_0(state, SCU_RAM_QAM_FSM_RTH__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FTH__A, 60);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_CTH__A, 80);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_PTH__A, 100);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_QTH__A, 140);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_MTH__A, 100);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_FSM_RATE_LIM__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_COUNT_LIM__A, 5);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_FSM_FREQ_LIM__A, 12);
		if (status < 0)
			break;

		/* QAM FSM Tracking Parameters */

		status = Write16_0(state, SCU_RAM_QAM_FSM_MEDIAN_AV_MULT__A, (u16) 8);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_RADIUS_AV_LIMIT__A, (u16) 65);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET1__A, (u16) 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET2__A, (u16) 3);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET3__A, (u16) -1);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET4__A, (u16) -12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET5__A, (u16) -23);
		if (status < 0)
			break;
	} while (0);

	return status;
}

/*============================================================================*/

/**
* \brief QAM256 specific setup
* \param demod: instance of demod.
* \return DRXStatus_t.
*/
static int SetQAM256(struct drxk_state *state)
{
	int status = 0;

	do {
		/* QAM Equalizer Setup */
		/* Equalizer */
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD0__A, 11502);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD1__A, 12084);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD2__A, 12543);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD3__A, 12931);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD4__A, 13629);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_EQ_CMA_RAD5__A, 15385);
		if (status < 0)
			break;

		/* Decision Feedback Equalizer */
		status = Write16_0(state, QAM_DQ_QUAL_FUN0__A, 8);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN1__A, 8);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN2__A, 8);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN3__A, 8);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN4__A, 6);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_DQ_QUAL_FUN5__A, 0);
		if (status < 0)
			break;

		status = Write16_0(state, QAM_SY_SYNC_HWM__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_AWM__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_SYNC_LWM__A, 3);
		if (status < 0)
			break;

		/* QAM Slicer Settings */

		status = Write16_0(state, SCU_RAM_QAM_SL_SIG_POWER__A, DRXK_QAM_SL_SIG_POWER_QAM256);
		if (status < 0)
			break;


		/* QAM Loop Controller Coeficients */

		status = Write16_0(state, SCU_RAM_QAM_LC_CA_FINE__A, 15);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CA_COARSE__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_MEDIUM__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EP_COARSE__A, 24);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_FINE__A, 12);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_MEDIUM__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_EI_COARSE__A, 16);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_LC_CP_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_MEDIUM__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CP_COARSE__A, 250);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_MEDIUM__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CI_COARSE__A, 125);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_FINE__A, 16);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_MEDIUM__A, 25);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF_COARSE__A, 48);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_FINE__A, 5);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_MEDIUM__A, 10);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_LC_CF1_COARSE__A, 10);
		if (status < 0)
			break;


		/* QAM State Machine (FSM) Thresholds */

		status = Write16_0(state, SCU_RAM_QAM_FSM_RTH__A, 50);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FTH__A, 60);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_CTH__A, 80);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_PTH__A, 100);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_QTH__A, 150);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_MTH__A, 110);
		if (status < 0)
			break;

		status = Write16_0(state, SCU_RAM_QAM_FSM_RATE_LIM__A, 40);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_COUNT_LIM__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_FREQ_LIM__A, 12);
		if (status < 0)
			break;


		/* QAM FSM Tracking Parameters */

		status = Write16_0(state, SCU_RAM_QAM_FSM_MEDIAN_AV_MULT__A, (u16) 8);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_RADIUS_AV_LIMIT__A, (u16) 74);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET1__A, (u16) 18);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET2__A, (u16) 13);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET3__A, (u16) 7);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET4__A, (u16) 0);
		if (status < 0)
			break;
		status = Write16_0(state, SCU_RAM_QAM_FSM_LCAVG_OFFSET5__A, (u16) -8);
		if (status < 0)
			break;
	} while (0);

	return status;
}


/*============================================================================*/
/**
* \brief Reset QAM block.
* \param demod:   instance of demod.
* \param channel: pointer to channel data.
* \return DRXStatus_t.
*/
static int QAMResetQAM(struct drxk_state *state)
{
	int status;
	u16 cmdResult;

	do {
		/* Stop QAM comstate->m_exec */
		status = Write16_0(state, QAM_COMM_EXEC__A, QAM_COMM_EXEC_STOP);
		if (status < 0)
			break;

		status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM | SCU_RAM_COMMAND_CMD_DEMOD_RESET, 0, NULL, 1, &cmdResult);
		if (status < 0)
			break;
	} while (0);

	/* All done, all OK */
	return status;
}

/*============================================================================*/

/**
* \brief Set QAM symbolrate.
* \param demod:   instance of demod.
* \param channel: pointer to channel data.
* \return DRXStatus_t.
*/
static int QAMSetSymbolrate(struct drxk_state *state)
{
	u32 adcFrequency = 0;
	u32 symbFreq = 0;
	u32 iqmRcRate = 0;
	u16 ratesel = 0;
	u32 lcSymbRate = 0;
	int status;

	do {
		/* Select & calculate correct IQM rate */
		adcFrequency = (state->m_sysClockFreq * 1000) / 3;
		ratesel = 0;
		/* printk(KERN_DEBUG "drxk: SR %d\n", state->param.u.qam.symbol_rate); */
		if (state->param.u.qam.symbol_rate <= 1188750)
			ratesel = 3;
		else if (state->param.u.qam.symbol_rate <= 2377500)
			ratesel = 2;
		else if (state->param.u.qam.symbol_rate <= 4755000)
			ratesel = 1;
		status = Write16_0(state, IQM_FD_RATESEL__A, ratesel);
		if (status < 0)
			break;

		/*
		   IqmRcRate = ((Fadc / (symbolrate * (4<<ratesel))) - 1) * (1<<23)
		 */
		symbFreq = state->param.u.qam.symbol_rate * (1 << ratesel);
		if (symbFreq == 0) {
			/* Divide by zero */
			return -1;
		}
		iqmRcRate = (adcFrequency / symbFreq) * (1 << 21) +
		    (Frac28a((adcFrequency % symbFreq), symbFreq) >> 7) -
		    (1 << 23);
		status = Write32(state, IQM_RC_RATE_OFS_LO__A, iqmRcRate, 0);
		if (status < 0)
			break;
		state->m_iqmRcRate = iqmRcRate;
		/*
		   LcSymbFreq = round (.125 *  symbolrate / adcFreq * (1<<15))
		 */
		symbFreq = state->param.u.qam.symbol_rate;
		if (adcFrequency == 0) {
			/* Divide by zero */
			return -1;
		}
		lcSymbRate = (symbFreq / adcFrequency) * (1 << 12) +
		    (Frac28a((symbFreq % adcFrequency), adcFrequency) >>
		     16);
		if (lcSymbRate > 511)
			lcSymbRate = 511;
		status = Write16_0(state, QAM_LC_SYMBOL_FREQ__A, (u16) lcSymbRate);
		if (status < 0)
			break;
	} while (0);

	return status;
}

/*============================================================================*/

/**
* \brief Get QAM lock status.
* \param demod:   instance of demod.
* \param channel: pointer to channel data.
* \return DRXStatus_t.
*/

static int GetQAMLockStatus(struct drxk_state *state, u32 *pLockStatus)
{
	int status;
	u16 Result[2] = { 0, 0 };

	status =
	    scu_command(state,
			SCU_RAM_COMMAND_STANDARD_QAM |
			SCU_RAM_COMMAND_CMD_DEMOD_GET_LOCK, 0, NULL, 2,
			Result);
	if (status < 0)
		printk(KERN_ERR "drxk: %s status = %08x\n", __func__, status);

	if (Result[1] < SCU_RAM_QAM_LOCKED_LOCKED_DEMOD_LOCKED) {
		/* 0x0000 NOT LOCKED */
		*pLockStatus = NOT_LOCKED;
	} else if (Result[1] < SCU_RAM_QAM_LOCKED_LOCKED_LOCKED) {
		/* 0x4000 DEMOD LOCKED */
		*pLockStatus = DEMOD_LOCK;
	} else if (Result[1] < SCU_RAM_QAM_LOCKED_LOCKED_NEVER_LOCK) {
		/* 0x8000 DEMOD + FEC LOCKED (system lock) */
		*pLockStatus = MPEG_LOCK;
	} else {
		/* 0xC000 NEVER LOCKED */
		/* (system will never be able to lock to the signal) */
		/* TODO: check this, intermediate & standard specific lock states are not
		   taken into account here */
		*pLockStatus = NEVER_LOCK;
	}
	return status;
}

#define QAM_MIRROR__M         0x03
#define QAM_MIRROR_NORMAL     0x00
#define QAM_MIRRORED          0x01
#define QAM_MIRROR_AUTO_ON    0x02
#define QAM_LOCKRANGE__M      0x10
#define QAM_LOCKRANGE_NORMAL  0x10

static int SetQAM(struct drxk_state *state, u16 IntermediateFreqkHz,
		  s32 tunerFreqOffset)
{
	int status = 0;
	u8 parameterLen;
	u16 setEnvParameters[5];
	u16 setParamParameters[4] = { 0, 0, 0, 0 };
	u16 cmdResult;

	do {
		/*
		   STEP 1: reset demodulator
		   resets FEC DI and FEC RS
		   resets QAM block
		   resets SCU variables
		 */
		status = Write16_0(state, FEC_DI_COMM_EXEC__A, FEC_DI_COMM_EXEC_STOP);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_RS_COMM_EXEC__A, FEC_RS_COMM_EXEC_STOP);
		if (status < 0)
			break;
		status = QAMResetQAM(state);
		if (status < 0)
			break;

		/*
		   STEP 2: configure demodulator
		   -set env
		   -set params; resets IQM,QAM,FEC HW; initializes some SCU variables
		 */
		status = QAMSetSymbolrate(state);
		if (status < 0)
			break;

		/* Env parameters */
		setEnvParameters[2] = QAM_TOP_ANNEX_A;	/* Annex */
		if (state->m_OperationMode == OM_QAM_ITU_C)
			setEnvParameters[2] = QAM_TOP_ANNEX_C;	/* Annex */
		setParamParameters[3] |= (QAM_MIRROR_AUTO_ON);
		/* check for LOCKRANGE Extented */
		/* setParamParameters[3] |= QAM_LOCKRANGE_NORMAL; */
		parameterLen = 4;

		/* Set params */
		switch (state->param.u.qam.modulation) {
		case QAM_256:
			state->m_Constellation = DRX_CONSTELLATION_QAM256;
			break;
		case QAM_AUTO:
		case QAM_64:
			state->m_Constellation = DRX_CONSTELLATION_QAM64;
			break;
		case QAM_16:
			state->m_Constellation = DRX_CONSTELLATION_QAM16;
			break;
		case QAM_32:
			state->m_Constellation = DRX_CONSTELLATION_QAM32;
			break;
		case QAM_128:
			state->m_Constellation = DRX_CONSTELLATION_QAM128;
			break;
		default:
			status = -EINVAL;
			break;
		}
		status = status;
		if (status < 0)
			break;
		setParamParameters[0] = state->m_Constellation;	/* constellation     */
		setParamParameters[1] = DRXK_QAM_I12_J17;	/* interleave mode   */

		status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM | SCU_RAM_COMMAND_CMD_DEMOD_SET_PARAM, 4, setParamParameters, 1, &cmdResult);
		if (status < 0)
			break;


		/* STEP 3: enable the system in a mode where the ADC provides valid signal
		   setup constellation independent registers */
#if 0
		status = SetFrequency (channel, tunerFreqOffset));
		if (status < 0)
			break;
#endif
		status = SetFrequencyShifter(state, IntermediateFreqkHz, tunerFreqOffset, true);
		if (status < 0)
			break;

		/* Setup BER measurement */
		status = SetQAMMeasurement(state, state->m_Constellation, state->param.u. qam.symbol_rate);
		if (status < 0)
			break;

		/* Reset default values */
		status = Write16_0(state, IQM_CF_SCALE_SH__A, IQM_CF_SCALE_SH__PRE);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_SY_TIMEOUT__A, QAM_SY_TIMEOUT__PRE);
		if (status < 0)
			break;

		/* Reset default LC values */
		status = Write16_0(state, QAM_LC_RATE_LIMIT__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_LPF_FACTORP__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_LPF_FACTORI__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_MODE__A, 7);
		if (status < 0)
			break;

		status = Write16_0(state, QAM_LC_QUAL_TAB0__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB1__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB2__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB3__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB4__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB5__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB6__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB8__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB9__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB10__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB12__A, 2);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB15__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB16__A, 3);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB20__A, 4);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_LC_QUAL_TAB25__A, 4);
		if (status < 0)
			break;

		/* Mirroring, QAM-block starting point not inverted */
		status = Write16_0(state, QAM_SY_SP_INV__A, QAM_SY_SP_INV_SPECTRUM_INV_DIS);
		if (status < 0)
			break;

		/* Halt SCU to enable safe non-atomic accesses */
		status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_HOLD);
		if (status < 0)
			break;

		/* STEP 4: constellation specific setup */
		switch (state->param.u.qam.modulation) {
		case QAM_16:
			status = SetQAM16(state);
			if (status < 0)
				break;
			break;
		case QAM_32:
			status = SetQAM32(state);
			if (status < 0)
				break;
			break;
		case QAM_AUTO:
		case QAM_64:
			status = SetQAM64(state);
			if (status < 0)
				break;
			break;
		case QAM_128:
			status = SetQAM128(state);
			if (status < 0)
				break;
			break;
		case QAM_256:
			status = SetQAM256(state);
			if (status < 0)
				break;
			break;
		default:
			return -1;
			break;
		}		/* switch */
		/* Activate SCU to enable SCU commands */
		status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_ACTIVE);
		if (status < 0)
			break;


		/* Re-configure MPEG output, requires knowledge of channel bitrate */
		/* extAttr->currentChannel.constellation = channel->constellation; */
		/* extAttr->currentChannel.symbolrate    = channel->symbolrate; */
		status = MPEGTSDtoSetup(state, state->m_OperationMode);
		if (status < 0)
			break;

		/* Start processes */
		status = MPEGTSStart(state);
		if (status < 0)
			break;
		status = Write16_0(state, FEC_COMM_EXEC__A, FEC_COMM_EXEC_ACTIVE);
		if (status < 0)
			break;
		status = Write16_0(state, QAM_COMM_EXEC__A, QAM_COMM_EXEC_ACTIVE);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_COMM_EXEC__A, IQM_COMM_EXEC_B_ACTIVE);
		if (status < 0)
			break;

		/* STEP 5: start QAM demodulator (starts FEC, QAM and IQM HW) */
		status = scu_command(state, SCU_RAM_COMMAND_STANDARD_QAM | SCU_RAM_COMMAND_CMD_DEMOD_START, 0, NULL, 1, &cmdResult);
		if (status < 0)
			break;

		/* update global DRXK data container */
	/*?     extAttr->qamInterleaveMode = DRXK_QAM_I12_J17; */

		/* All done, all OK */
	} while (0);

	if (status < 0)
		printk(KERN_ERR "drxk: %s %d\n", __func__, status);

	return status;
}

static int SetQAMStandard(struct drxk_state *state,
			  enum OperationMode oMode)
{
#ifdef DRXK_QAM_TAPS
#define DRXK_QAMA_TAPS_SELECT
#include "drxk_filters.h"
#undef DRXK_QAMA_TAPS_SELECT
#else
	int status;
#endif

	do {
		/* added antenna switch */
		SwitchAntennaToQAM(state);

		/* Ensure correct power-up mode */
		status = PowerUpQAM(state);
		if (status < 0)
			break;
		/* Reset QAM block */
		status = QAMResetQAM(state);
		if (status < 0)
			break;

		/* Setup IQM */

		status = Write16_0(state, IQM_COMM_EXEC__A, IQM_COMM_EXEC_B_STOP);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_AF_AMUX__A, IQM_AF_AMUX_SIGNAL2ADC);
		if (status < 0)
			break;

		/* Upload IQM Channel Filter settings by
		   boot loader from ROM table */
		switch (oMode) {
		case OM_QAM_ITU_A:
			status = BLChainCmd(state, DRXK_BL_ROM_OFFSET_TAPS_ITU_A, DRXK_BLCC_NR_ELEMENTS_TAPS, DRXK_BLC_TIMEOUT);
			if (status < 0)
				break;
			break;
		case OM_QAM_ITU_C:
			status = BLDirectCmd(state, IQM_CF_TAP_RE0__A, DRXK_BL_ROM_OFFSET_TAPS_ITU_C, DRXK_BLDC_NR_ELEMENTS_TAPS, DRXK_BLC_TIMEOUT);
			if (status < 0)
				break;
			status = BLDirectCmd(state, IQM_CF_TAP_IM0__A, DRXK_BL_ROM_OFFSET_TAPS_ITU_C, DRXK_BLDC_NR_ELEMENTS_TAPS, DRXK_BLC_TIMEOUT);
			if (status < 0)
				break;
			break;
		default:
			status = -EINVAL;
		}
		status = status;
		if (status < 0)
			break;

		status = Write16_0(state, IQM_CF_OUT_ENA__A, (1 << IQM_CF_OUT_ENA_QAM__B));
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_SYMMETRIC__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_MIDTAP__A, ((1 << IQM_CF_MIDTAP_RE__B) | (1 << IQM_CF_MIDTAP_IM__B)));
		if (status < 0)
			break;

		status = Write16_0(state, IQM_RC_STRETCH__A, 21);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_AF_CLP_LEN__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_AF_CLP_TH__A, 448);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_AF_SNS_LEN__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_POW_MEAS_LEN__A, 0);
		if (status < 0)
			break;

		status = Write16_0(state, IQM_FS_ADJ_SEL__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_RC_ADJ_SEL__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_ADJ_SEL__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_AF_UPD_SEL__A, 0);
		if (status < 0)
			break;

		/* IQM Impulse Noise Processing Unit */
		status = Write16_0(state, IQM_CF_CLP_VAL__A, 500);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_DATATH__A, 1000);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_BYPASSDET__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_DET_LCT__A, 0);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_WND_LEN__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_CF_PKDTH__A, 1);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_AF_INC_BYPASS__A, 1);
		if (status < 0)
			break;

		/* turn on IQMAF. Must be done before setAgc**() */
		status = SetIqmAf(state, true);
		if (status < 0)
			break;
		status = Write16_0(state, IQM_AF_START_LOCK__A, 0x01);
		if (status < 0)
			break;

		/* IQM will not be reset from here, sync ADC and update/init AGC */
		status = ADCSynchronization(state);
		if (status < 0)
			break;

		/* Set the FSM step period */
		status = Write16_0(state, SCU_RAM_QAM_FSM_STEP_PERIOD__A, 2000);
		if (status < 0)
			break;

		/* Halt SCU to enable safe non-atomic accesses */
		status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_HOLD);
		if (status < 0)
			break;

		/* No more resets of the IQM, current standard correctly set =>
		   now AGCs can be configured. */

		status = InitAGC(state, true);
		if (status < 0)
			break;
		status = SetPreSaw(state, &(state->m_qamPreSawCfg));
		if (status < 0)
			break;

		/* Configure AGC's */
		status = SetAgcRf(state, &(state->m_qamRfAgcCfg), true);
		if (status < 0)
			break;
		status = SetAgcIf(state, &(state->m_qamIfAgcCfg), true);
		if (status < 0)
			break;

		/* Activate SCU to enable SCU commands */
		status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_ACTIVE);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int WriteGPIO(struct drxk_state *state)
{
	int status;
	u16 value = 0;

	do {
		/* stop lock indicator process */
		status = Write16_0(state, SCU_RAM_GPIO__A, SCU_RAM_GPIO_HW_LOCK_IND_DISABLE);
		if (status < 0)
			break;

		/*  Write magic word to enable pdr reg write               */
		status = Write16_0(state, SIO_TOP_COMM_KEY__A, SIO_TOP_COMM_KEY_KEY);
		if (status < 0)
			break;

		if (state->m_hasSAWSW) {
			/* write to io pad configuration register - output mode */
			status = Write16_0(state, SIO_PDR_SMA_TX_CFG__A, state->m_GPIOCfg);
			if (status < 0)
				break;

			/* use corresponding bit in io data output registar */
			status = Read16_0(state, SIO_PDR_UIO_OUT_LO__A, &value);
			if (status < 0)
				break;
			if (state->m_GPIO == 0)
				value &= 0x7FFF;	/* write zero to 15th bit - 1st UIO */
			else
				value |= 0x8000;	/* write one to 15th bit - 1st UIO */
			/* write back to io data output register */
			status = Write16_0(state, SIO_PDR_UIO_OUT_LO__A, value);
			if (status < 0)
				break;

		}
		/*  Write magic word to disable pdr reg write               */
		status = Write16_0(state, SIO_TOP_COMM_KEY__A, 0x0000);
		if (status < 0)
			break;
	} while (0);
	return status;
}

static int SwitchAntennaToQAM(struct drxk_state *state)
{
	int status = -1;

	if (state->m_AntennaSwitchDVBTDVBC != 0) {
		if (state->m_GPIO != state->m_AntennaDVBC) {
			state->m_GPIO = state->m_AntennaDVBC;
			status = WriteGPIO(state);
		}
	}
	return status;
}

static int SwitchAntennaToDVBT(struct drxk_state *state)
{
	int status = -1;

	if (state->m_AntennaSwitchDVBTDVBC != 0) {
		if (state->m_GPIO != state->m_AntennaDVBT) {
			state->m_GPIO = state->m_AntennaDVBT;
			status = WriteGPIO(state);
		}
	}
	return status;
}


static int PowerDownDevice(struct drxk_state *state)
{
	/* Power down to requested mode */
	/* Backup some register settings */
	/* Set pins with possible pull-ups connected to them in input mode */
	/* Analog power down */
	/* ADC power down */
	/* Power down device */
	int status;
	do {
		if (state->m_bPDownOpenBridge) {
			/* Open I2C bridge before power down of DRXK */
			status = ConfigureI2CBridge(state, true);
			if (status < 0)
				break;
		}
		/* driver 0.9.0 */
		status = DVBTEnableOFDMTokenRing(state, false);
		if (status < 0)
			break;

		status = Write16_0(state, SIO_CC_PWD_MODE__A, SIO_CC_PWD_MODE_LEVEL_CLOCK);
		if (status < 0)
			break;
		status = Write16_0(state, SIO_CC_UPDATE__A, SIO_CC_UPDATE_KEY);
		if (status < 0)
			break;
		state->m_HICfgCtrl |= SIO_HI_RA_RAM_PAR_5_CFG_SLEEP_ZZZ;
		status = HI_CfgCommand(state);
		if (status < 0)
			break;
	} while (0);

	if (status < 0)
		return -1;

	return 0;
}

static int load_microcode(struct drxk_state *state, char *mc_name)
{
	const struct firmware *fw = NULL;
	int err = 0;

	err = request_firmware(&fw, mc_name, state->i2c->dev.parent);
	if (err < 0) {
		printk(KERN_ERR
		       "drxk: Could not load firmware file %s.\n", mc_name);
		printk(KERN_INFO
		       "drxk: Copy %s to your hotplug directory!\n", mc_name);
		return err;
	}
	err = DownloadMicrocode(state, fw->data, fw->size);
	release_firmware(fw);
	return err;
}

static int init_drxk(struct drxk_state *state)
{
	int status;
	enum DRXPowerMode powerMode = DRXK_POWER_DOWN_OFDM;
	u16 driverVersion;

	if ((state->m_DrxkState == DRXK_UNINITIALIZED)) {
		do {
			status = PowerUpDevice(state);
			if (status < 0)
				break;
			status = DRXX_Open(state);
			if (status < 0)
				break;
			/* Soft reset of OFDM-, sys- and osc-clockdomain */
			status = Write16_0(state, SIO_CC_SOFT_RST__A, SIO_CC_SOFT_RST_OFDM__M | SIO_CC_SOFT_RST_SYS__M | SIO_CC_SOFT_RST_OSC__M);
			if (status < 0)
				break;
			status = Write16_0(state, SIO_CC_UPDATE__A, SIO_CC_UPDATE_KEY);
			if (status < 0)
				break;
			/* TODO is this needed, if yes how much delay in worst case scenario */
			msleep(1);
			state->m_DRXK_A3_PATCH_CODE = true;
			status = GetDeviceCapabilities(state);
			if (status < 0)
				break;

			/* Bridge delay, uses oscilator clock */
			/* Delay = (delay (nano seconds) * oscclk (kHz))/ 1000 */
			/* SDA brdige delay */
			state->m_HICfgBridgeDelay =
			    (u16) ((state->m_oscClockFreq / 1000) *
				   HI_I2C_BRIDGE_DELAY) / 1000;
			/* Clipping */
			if (state->m_HICfgBridgeDelay >
			    SIO_HI_RA_RAM_PAR_3_CFG_DBL_SDA__M) {
				state->m_HICfgBridgeDelay =
				    SIO_HI_RA_RAM_PAR_3_CFG_DBL_SDA__M;
			}
			/* SCL bridge delay, same as SDA for now */
			state->m_HICfgBridgeDelay +=
			    state->m_HICfgBridgeDelay <<
			    SIO_HI_RA_RAM_PAR_3_CFG_DBL_SCL__B;

			status = InitHI(state);
			if (status < 0)
				break;
			/* disable various processes */
#if NOA1ROM
			if (!(state->m_DRXK_A1_ROM_CODE)
			    && !(state->m_DRXK_A2_ROM_CODE))
#endif
			{
				status = Write16_0(state, SCU_RAM_GPIO__A, SCU_RAM_GPIO_HW_LOCK_IND_DISABLE);
				if (status < 0)
					break;
			}

			/* disable MPEG port */
			status = MPEGTSDisable(state);
			if (status < 0)
				break;

			/* Stop AUD and SCU */
			status = Write16_0(state, AUD_COMM_EXEC__A, AUD_COMM_EXEC_STOP);
			if (status < 0)
				break;
			status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_STOP);
			if (status < 0)
				break;

			/* enable token-ring bus through OFDM block for possible ucode upload */
			status = Write16_0(state, SIO_OFDM_SH_OFDM_RING_ENABLE__A, SIO_OFDM_SH_OFDM_RING_ENABLE_ON);
			if (status < 0)
				break;

			/* include boot loader section */
			status = Write16_0(state, SIO_BL_COMM_EXEC__A, SIO_BL_COMM_EXEC_ACTIVE);
			if (status < 0)
				break;
			status = BLChainCmd(state, 0, 6, 100);
			if (status < 0)
				break;

#if 0
			if (state->m_DRXK_A3_PATCH_CODE)
				status = DownloadMicrocode(state, DRXK_A3_microcode, DRXK_A3_microcode_length);
				if (status < 0)
					break;
#else
			load_microcode(state, "drxk_a3.mc");
#endif
#if NOA1ROM
			if (state->m_DRXK_A2_PATCH_CODE)
				status = DownloadMicrocode(state, DRXK_A2_microcode, DRXK_A2_microcode_length);
				if (status < 0)
					break;
#endif
			/* disable token-ring bus through OFDM block for possible ucode upload */
			status = Write16_0(state, SIO_OFDM_SH_OFDM_RING_ENABLE__A, SIO_OFDM_SH_OFDM_RING_ENABLE_OFF);
			if (status < 0)
				break;

			/* Run SCU for a little while to initialize microcode version numbers */
			status = Write16_0(state, SCU_COMM_EXEC__A, SCU_COMM_EXEC_ACTIVE);
			if (status < 0)
				break;
			status = DRXX_Open(state);
			if (status < 0)
				break;
			/* added for test */
			msleep(30);

			powerMode = DRXK_POWER_DOWN_OFDM;
			status = CtrlPowerMode(state, &powerMode);
			if (status < 0)
				break;

			/* Stamp driver version number in SCU data RAM in BCD code
			   Done to enable field application engineers to retreive drxdriver version
			   via I2C from SCU RAM.
			   Not using SCU command interface for SCU register access since no
			   microcode may be present.
			 */
			driverVersion =
			    (((DRXK_VERSION_MAJOR / 100) % 10) << 12) +
			    (((DRXK_VERSION_MAJOR / 10) % 10) << 8) +
			    ((DRXK_VERSION_MAJOR % 10) << 4) +
			    (DRXK_VERSION_MINOR % 10);
			status = Write16_0(state, SCU_RAM_DRIVER_VER_HI__A, driverVersion);
			if (status < 0)
				break;
			driverVersion =
			    (((DRXK_VERSION_PATCH / 1000) % 10) << 12) +
			    (((DRXK_VERSION_PATCH / 100) % 10) << 8) +
			    (((DRXK_VERSION_PATCH / 10) % 10) << 4) +
			    (DRXK_VERSION_PATCH % 10);
			status = Write16_0(state, SCU_RAM_DRIVER_VER_LO__A, driverVersion);
			if (status < 0)
				break;

			printk(KERN_INFO "DRXK driver version %d.%d.%d\n",
			       DRXK_VERSION_MAJOR, DRXK_VERSION_MINOR,
			       DRXK_VERSION_PATCH);

			/* Dirty fix of default values for ROM/PATCH microcode
			   Dirty because this fix makes it impossible to setup suitable values
			   before calling DRX_Open. This solution requires changes to RF AGC speed
			   to be done via the CTRL function after calling DRX_Open */

			/* m_dvbtRfAgcCfg.speed = 3; */

			/* Reset driver debug flags to 0 */
			status = Write16_0(state, SCU_RAM_DRIVER_DEBUG__A, 0);
			if (status < 0)
				break;
			/* driver 0.9.0 */
			/* Setup FEC OC:
			   NOTE: No more full FEC resets allowed afterwards!! */
			status = Write16_0(state, FEC_COMM_EXEC__A, FEC_COMM_EXEC_STOP);
			if (status < 0)
				break;
			/* MPEGTS functions are still the same */
			status = MPEGTSDtoInit(state);
			if (status < 0)
				break;
			status = MPEGTSStop(state);
			if (status < 0)
				break;
			status = MPEGTSConfigurePolarity(state);
			if (status < 0)
				break;
			status = MPEGTSConfigurePins(state, state->m_enableMPEGOutput);
			if (status < 0)
				break;
			/* added: configure GPIO */
			status = WriteGPIO(state);
			if (status < 0)
				break;

			state->m_DrxkState = DRXK_STOPPED;

			if (state->m_bPowerDown) {
				status = PowerDownDevice(state);
				if (status < 0)
					break;
				state->m_DrxkState = DRXK_POWERED_DOWN;
			} else
				state->m_DrxkState = DRXK_STOPPED;
		} while (0);
	}

	return 0;
}

static void drxk_c_release(struct dvb_frontend *fe)
{
	struct drxk_state *state = fe->demodulator_priv;

	kfree(state);
}

static int drxk_c_init(struct dvb_frontend *fe)
{
	struct drxk_state *state = fe->demodulator_priv;

	if (mutex_trylock(&state->ctlock) == 0)
		return -EBUSY;
	SetOperationMode(state, OM_QAM_ITU_A);
	return 0;
}

static int drxk_c_sleep(struct dvb_frontend *fe)
{
	struct drxk_state *state = fe->demodulator_priv;

	ShutDown(state);
	mutex_unlock(&state->ctlock);
	return 0;
}

static int drxk_gate_ctrl(struct dvb_frontend *fe, int enable)
{
	struct drxk_state *state = fe->demodulator_priv;

	/* printk(KERN_DEBUG "drxk: drxk_gate %d\n", enable); */
	return ConfigureI2CBridge(state, enable ? true : false);
}

static int drxk_set_parameters(struct dvb_frontend *fe,
			       struct dvb_frontend_parameters *p)
{
	struct drxk_state *state = fe->demodulator_priv;
	u32 IF;

	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 1);
	if (fe->ops.tuner_ops.set_params)
		fe->ops.tuner_ops.set_params(fe, p);
	if (fe->ops.i2c_gate_ctrl)
		fe->ops.i2c_gate_ctrl(fe, 0);
	state->param = *p;
	fe->ops.tuner_ops.get_frequency(fe, &IF);
	Start(state, 0, IF);

	/* printk(KERN_DEBUG "drxk: %s IF=%d done\n", __func__, IF); */

	return 0;
}

static int drxk_c_get_frontend(struct dvb_frontend *fe,
			       struct dvb_frontend_parameters *p)
{
	return 0;
}

static int drxk_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
	struct drxk_state *state = fe->demodulator_priv;
	u32 stat;

	*status = 0;
	GetLockStatus(state, &stat, 0);
	if (stat == MPEG_LOCK)
		*status |= 0x1f;
	if (stat == FEC_LOCK)
		*status |= 0x0f;
	if (stat == DEMOD_LOCK)
		*status |= 0x07;
	return 0;
}

static int drxk_read_ber(struct dvb_frontend *fe, u32 *ber)
{
	*ber = 0;
	return 0;
}

static int drxk_read_signal_strength(struct dvb_frontend *fe,
				     u16 *strength)
{
	struct drxk_state *state = fe->demodulator_priv;
	u32 val;

	ReadIFAgc(state, &val);
	*strength = val & 0xffff;
	return 0;
}

static int drxk_read_snr(struct dvb_frontend *fe, u16 *snr)
{
	struct drxk_state *state = fe->demodulator_priv;
	s32 snr2;

	GetSignalToNoise(state, &snr2);
	*snr = snr2 & 0xffff;
	return 0;
}

static int drxk_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
	struct drxk_state *state = fe->demodulator_priv;
	u16 err;

	DVBTQAMGetAccPktErr(state, &err);
	*ucblocks = (u32) err;
	return 0;
}

static int drxk_c_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings
				    *sets)
{
	sets->min_delay_ms = 3000;
	sets->max_drift = 0;
	sets->step_size = 0;
	return 0;
}

static void drxk_t_release(struct dvb_frontend *fe)
{
#if 0
	struct drxk_state *state = fe->demodulator_priv;

	printk(KERN_DEBUG "drxk: %s\n", __func__);
	kfree(state);
#endif
}

static int drxk_t_init(struct dvb_frontend *fe)
{
	struct drxk_state *state = fe->demodulator_priv;
	if (mutex_trylock(&state->ctlock) == 0)
		return -EBUSY;
	SetOperationMode(state, OM_DVBT);
	return 0;
}

static int drxk_t_sleep(struct dvb_frontend *fe)
{
	struct drxk_state *state = fe->demodulator_priv;
	mutex_unlock(&state->ctlock);
	return 0;
}

static int drxk_t_get_frontend(struct dvb_frontend *fe,
			       struct dvb_frontend_parameters *p)
{
	return 0;
}

static struct dvb_frontend_ops drxk_c_ops = {
	.info = {
		 .name = "DRXK DVB-C",
		 .type = FE_QAM,
		 .frequency_stepsize = 62500,
		 .frequency_min = 47000000,
		 .frequency_max = 862000000,
		 .symbol_rate_min = 870000,
		 .symbol_rate_max = 11700000,
		 .caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
		 FE_CAN_QAM_128 | FE_CAN_QAM_256 | FE_CAN_FEC_AUTO},
	.release = drxk_c_release,
	.init = drxk_c_init,
	.sleep = drxk_c_sleep,
	.i2c_gate_ctrl = drxk_gate_ctrl,

	.set_frontend = drxk_set_parameters,
	.get_frontend = drxk_c_get_frontend,
	.get_tune_settings = drxk_c_get_tune_settings,

	.read_status = drxk_read_status,
	.read_ber = drxk_read_ber,
	.read_signal_strength = drxk_read_signal_strength,
	.read_snr = drxk_read_snr,
	.read_ucblocks = drxk_read_ucblocks,
};

static struct dvb_frontend_ops drxk_t_ops = {
	.info = {
		 .name = "DRXK DVB-T",
		 .type = FE_OFDM,
		 .frequency_min = 47125000,
		 .frequency_max = 865000000,
		 .frequency_stepsize = 166667,
		 .frequency_tolerance = 0,
		 .caps = 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 | FE_CAN_QAM_64 |
		 FE_CAN_QAM_AUTO |
		 FE_CAN_TRANSMISSION_MODE_AUTO |
		 FE_CAN_GUARD_INTERVAL_AUTO |
		 FE_CAN_HIERARCHY_AUTO | FE_CAN_RECOVER | FE_CAN_MUTE_TS},
	.release = drxk_t_release,
	.init = drxk_t_init,
	.sleep = drxk_t_sleep,
	.i2c_gate_ctrl = drxk_gate_ctrl,

	.set_frontend = drxk_set_parameters,
	.get_frontend = drxk_t_get_frontend,

	.read_status = drxk_read_status,
	.read_ber = drxk_read_ber,
	.read_signal_strength = drxk_read_signal_strength,
	.read_snr = drxk_read_snr,
	.read_ucblocks = drxk_read_ucblocks,
};

struct dvb_frontend *drxk_attach(struct i2c_adapter *i2c, u8 adr,
				 struct dvb_frontend **fe_t)
{
	struct drxk_state *state = NULL;

	state = kzalloc(sizeof(struct drxk_state), GFP_KERNEL);
	if (!state)
		return NULL;

	state->i2c = i2c;
	state->demod_address = adr;

	mutex_init(&state->mutex);
	mutex_init(&state->ctlock);

	memcpy(&state->c_frontend.ops, &drxk_c_ops,
	       sizeof(struct dvb_frontend_ops));
	memcpy(&state->t_frontend.ops, &drxk_t_ops,
	       sizeof(struct dvb_frontend_ops));
	state->c_frontend.demodulator_priv = state;
	state->t_frontend.demodulator_priv = state;

	init_state(state);
	if (init_drxk(state) < 0)
		goto error;
	*fe_t = &state->t_frontend;
	return &state->c_frontend;

error:
	printk(KERN_ERR "drxk: not found\n");
	kfree(state);
	return NULL;
}
EXPORT_SYMBOL(drxk_attach);

MODULE_DESCRIPTION("DRX-K driver");
MODULE_AUTHOR("Ralph Metzler");
MODULE_LICENSE("GPL");