[media] mt2063: Simplify some functions

 *  Structure of data needed for Spur Avoidance

 */

struct MT2063_AvoidSpursData_t {

	u32 nAS_Algorithm;

	u32 f_ref;

	u32 f_in;

	u32 f_LO1;

static void MT2063_AddExclZone(struct MT2063_AvoidSpursData_t *pAS_Info,

                        u32 f_min, u32 f_max);

static u32 MT2063_ReInit(struct mt2063_state *state);

static u32 MT2063_Close(struct mt2063_state *state);

static u32 MT2063_GetReg(struct mt2063_state *state, u8 reg, u8 * val);

static u32 MT2063_GetParam(struct mt2063_state *state, enum MT2063_Param param, u32 * pValue);

static u32 MT2063_SetReg(struct mt2063_state *state, u8 reg, u8 val);

	return (status);

}

/*****************************************************************************

**

**  Name: MT_Sleep

**

**  Description:    Delay execution for "nMinDelayTime" milliseconds

**

**  Parameters:     hUserData     - User-specific I/O parameter that was

**                                  passed to tuner's Open function.

**                  nMinDelayTime - Delay time in milliseconds

**

**  Returns:        None.

**

**  Notes:          This is a callback function that is called from the

**                  the tuning algorithm.  You MUST provide code that

**                  blocks execution for the specified period of time.

**

**  Revision History:

**

**   SCR      Date      Author  Description

**  -------------------------------------------------------------------------

**   N/A   03-25-2004    DAD    Original

**

*****************************************************************************/

/*

 * FIXME: Is this really needed?

 */

static int MT2063_Sleep(struct dvb_frontend *fe)

{

	/*

	return 0;

}

//end of mt2063_userdef.c

//=================================================================

//#################################################################

//=================================================================

//context of mt2063_spuravoid.c <Henry> ======================================

//#################################################################

//=================================================================

/*****************************************************************************

**

**  Name: mt_spuravoid.c

**

**  Description:    Microtune spur avoidance software module.

**                  Supports Microtune tuner drivers.

**

**  CVS ID:         $Id: mt_spuravoid.c,v 1.3 2008/06/26 15:39:52 software Exp $

**  CVS Source:     $Source: /export/home/cvsroot/software/tuners/MT2063/mt_spuravoid.c,v $

**

**  Revision History:

**

**   SCR      Date      Author  Description

**  -------------------------------------------------------------------------

**   082   03-25-2005    JWS    Original multi-tuner support - requires

**                              MTxxxx_CNT declarations

**   096   04-06-2005    DAD    Ver 1.11: Fix divide by 0 error if maxH==0.

**   094   04-06-2005    JWS    Ver 1.11 Added uceil and ufloor to get rid

**                              of compiler warnings

**   N/A   04-07-2005    DAD    Ver 1.13: Merged single- and multi-tuner spur

**                              avoidance into a single module.

**   103   01-31-2005    DAD    Ver 1.14: In MT_AddExclZone(), if the range

**                              (f_min, f_max) < 0, ignore the entry.

**   115   03-23-2007    DAD    Fix declaration of spur due to truncation

**                              errors.

**   117   03-29-2007    RSK    Ver 1.15: Re-wrote to match search order from

**                              tuner DLL.

**   137   06-18-2007    DAD    Ver 1.16: Fix possible divide-by-0 error for

**                              multi-tuners that have

**                              (delta IF1) > (f_out-f_outbw/2).

**   147   07-27-2007    RSK    Ver 1.17: Corrected calculation (-) to (+)

**                              Added logic to force f_Center within 1/2 f_Step.

**   177 S 02-26-2008    RSK    Ver 1.18: Corrected calculation using LO1 > MAX/2

**                              Type casts added to preserve correct sign.

**   N/A I 06-17-2008    RSK    Ver 1.19: Refactoring avoidance of DECT

**                              frequencies into MT_ResetExclZones().

**   N/A I 06-20-2008    RSK    Ver 1.21: New VERSION number for ver checking.

**

*****************************************************************************/

/*

 * Microtune spur avoidance

 */

/*  Implement ceiling, floor functions.  */

#define ceil(n, d) (((n) < 0) ? (-((-(n))/(d))) : (n)/(d) + ((n)%(d) != 0))

#define uceil(n, d) ((n)/(d) + ((n)%(d) != 0))

#define floor(n, d) (((n) < 0) ? (-((-(n))/(d))) - ((n)%(d) != 0) : (n)/(d))

#define ufloor(n, d) ((n)/(d))

struct MT2063_FIFZone_t {

	s32 min_;

	s32 max_;

};

static u32 MT2063_RegisterTuner(struct MT2063_AvoidSpursData_t *pAS_Info)

{

	pAS_Info->nAS_Algorithm = 1;

	return 0;

}

static void MT2063_UnRegisterTuner(struct MT2063_AvoidSpursData_t *pAS_Info)

{

}

/*

**  Reset all exclusion zones.

**  Add zones to protect the PLL FracN regions near zero

	gf_Scale = MT2063_umax((u32) MT2063_gcd(lo_gcd, f), f_Scale);

	hgfs = gf_Scale / 2;

	n0 = uceil(f_LO2 - d, f_LO1 - f_LO2);

	n0 = DIV_ROUND_UP(f_LO2 - d, f_LO1 - f_LO2);

	/*  Check out all multiples of LO1 from n0 to m_maxLOSpurHarmonic  */

	for (n = n0; n <= pAS_Info->maxH1; ++n) {

	u32 status;	/*  Status to be returned.  */

	struct mt2063_state *state = fe->tuner_priv;

	/*  Default tuner handle to NULL.  If successful, it will be reassigned  */

	if (state->MT2063_init == false)

		state->rcvr_mode = MT2063_CABLE_QAM;

	status = MT2063_RegisterTuner(&state->AS_Data);

	if (status >= 0) {

	state->rcvr_mode = MT2063_CABLE_QAM;

	if (state->MT2063_init != false) {

		status = MT2063_ReInit(state);

	}

		if (status < 0)

		/*  MT2063_Close handles the un-registration of the tuner  */

		MT2063_Close(state);

	else {

		state->MT2063_init = true;

	}

	return (status);

			return status;

	}

/******************************************************************************

**

**  Name: MT2063_Close

**

**  Description:    Release the handle to the tuner.

**

**  Parameters:     hMT2063      - Handle to the MT2063 tuner

**

**  Returns:        status:

**                      MT_OK         - No errors

**                      MT_INV_HANDLE - Invalid tuner handle

**

**  Dependencies:   mt_errordef.h - definition of error codes

**

**  Revision History:

**

**   SCR      Date      Author  Description

**  -------------------------------------------------------------------------

**   138   06-19-2007    DAD    Ver 1.00: Initial, derived from mt2067_b.

**

******************************************************************************/

static u32 MT2063_Close(struct mt2063_state *state)

{

	/* Unregister tuner with SpurAvoidance routines (if needed) */

	MT2063_UnRegisterTuner(&state->AS_Data);

	/* Now remove the tuner from our own list of tuners */

	state->MT2063_init = true;

	return 0;

}

		*pValue = state->AS_Data.f_min_LO_Separation;

		break;

		/*  ID of avoid-spurs algorithm in use    */

	case MT2063_AS_ALG:

		*pValue = state->AS_Data.nAS_Algorithm;

		break;

		/*  max # of intra-tuner harmonics        */

	case MT2063_MAX_HARM1:

		*pValue = state->AS_Data.maxH1;