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[media] mt2063: Remove the code for more than one adjacent mt2063 tuners

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Such code is disabled via ifdef's. Also, they're ugly and rely
on some static structures. Just remove. If ever needed, the git
log can be used to recover it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-07-21 02:30:19 -03:00
parent dcd52d20d3
commit d0dcc2da26
1 changed files with 1 additions and 327 deletions
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328
drivers/media/common/tuners/mt2063.c
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@ -35,11 +35,6 @@ module_param(verbose, int, 0644);
/* Info: Downconverter frequency is out of range (may be reason for MT_DPC_UNLOCK) */
#define MT2063_DNC_RANGE (0x08000000)
#define MAX_UDATA (4294967295) /* max value storable in u32 */
#define MT2063_TUNER_CNT (1) /* total num of MicroTuner tuners */
#define MT2063_I2C (0xC0)
/*
* Data Types
*/
@ -810,8 +805,6 @@ static int MT2063_Sleep(struct dvb_frontend *fe)
**
*****************************************************************************/
/* Version of this module */
#define MT2063_SPUR_VERSION 10201 /* Version 01.21 */
/* Implement ceiling, floor functions. */
#define ceil(n, d) (((n) < 0) ? (-((-(n))/(d))) : (n)/(d) + ((n)%(d) != 0))
@ -824,53 +817,15 @@ struct MT2063_FIFZone_t {
s32 max_;
};
#if MT2063_TUNER_CNT > 1
static struct MT2063_AvoidSpursData_t *TunerList[MT2063_TUNER_CNT];
static u32 TunerCount = 0;
#endif
static u32 MT2063_RegisterTuner(struct MT2063_AvoidSpursData_t *pAS_Info)
{
#if MT2063_TUNER_CNT == 1
pAS_Info->nAS_Algorithm = 1;
return 0;
#else
u32 index;
pAS_Info->nAS_Algorithm = 2;
/*
** Check to see if tuner is already registered
*/
for (index = 0; index < TunerCount; index++) {
if (TunerList[index] == pAS_Info) {
return 0; /* Already here - no problem */
}
}
/*
** Add tuner to list - if there is room.
*/
if (TunerCount < MT2063_TUNER_CNT) {
TunerList[TunerCount] = pAS_Info;
TunerCount++;
return 0;
} else
return -ENODEV;
#endif
}
static void MT2063_UnRegisterTuner(struct MT2063_AvoidSpursData_t *pAS_Info)
{
#if MT2063_TUNER_CNT > 1
u32 index;
for (index = 0; index < TunerCount; index++) {
if (TunerList[index] == pAS_Info) {
TunerList[index] = TunerList[--TunerCount];
}
}
#endif
}
/*
@ -883,10 +838,6 @@ static void MT2063_UnRegisterTuner(struct MT2063_AvoidSpursData_t *pAS_Info)
static void MT2063_ResetExclZones(struct MT2063_AvoidSpursData_t *pAS_Info)
{
u32 center;
#if MT2063_TUNER_CNT > 1
u32 index;
struct MT2063_AvoidSpursData_t *adj;
#endif
pAS_Info->nZones = 0; /* this clears the used list */
pAS_Info->usedZones = NULL; /* reset ptr */
@ -945,38 +896,6 @@ static void MT2063_ResetExclZones(struct MT2063_AvoidSpursData_t *pAS_Info)
MT2063_AddExclZone(pAS_Info, 1882820000 - pAS_Info->f_in, 1884220000 - pAS_Info->f_in); /* Ctr = 1883.52 */
MT2063_AddExclZone(pAS_Info, 1881092000 - pAS_Info->f_in, 1882492000 - pAS_Info->f_in); /* Ctr = 1881.792 */
}
#if MT2063_TUNER_CNT > 1
/*
** Iterate through all adjacent tuners and exclude frequencies related to them
*/
for (index = 0; index < TunerCount; ++index) {
adj = TunerList[index];
if (pAS_Info == adj) /* skip over our own data, don't process it */
continue;
/*
** Add 1st IF exclusion zone covering adjacent tuner's LO2
** at "adjfLO2 + f_out" +/- m_MinLOSpacing
*/
if (adj->f_LO2 != 0)
MT2063_AddExclZone(pAS_Info,
(adj->f_LO2 + pAS_Info->f_out) -
pAS_Info->f_min_LO_Separation,
(adj->f_LO2 + pAS_Info->f_out) +
pAS_Info->f_min_LO_Separation);
/*
** Add 1st IF exclusion zone covering adjacent tuner's LO1
** at "adjfLO1 - f_in" +/- m_MinLOSpacing
*/
if (adj->f_LO1 != 0)
MT2063_AddExclZone(pAS_Info,
(adj->f_LO1 - pAS_Info->f_in) -
pAS_Info->f_min_LO_Separation,
(adj->f_LO1 - pAS_Info->f_in) +
pAS_Info->f_min_LO_Separation);
}
#endif
}
static struct MT2063_ExclZone_t *InsertNode(struct MT2063_AvoidSpursData_t
@ -1285,215 +1204,6 @@ static u32 MT2063_umax(u32 a, u32 b)
return (a >= b) ? a : b;
}
#if MT2063_TUNER_CNT > 1
static s32 RoundAwayFromZero(s32 n, s32 d)
{
return (n < 0) ? floor(n, d) : ceil(n, d);
}
/****************************************************************************
**
** Name: IsSpurInAdjTunerBand
**
** Description: Checks to see if a spur will be present within the IF's
** bandwidth or near the zero IF.
** (fIFOut +/- fIFBW/2, -fIFOut +/- fIFBW/2)
** and
** (0 +/- fZIFBW/2)
**
** ma mb me mf mc md
** <--+-+-+-----------------+-+-+-----------------+-+-+-->
** | ^ 0 ^ |
** ^ b=-fIFOut+fIFBW/2 -b=+fIFOut-fIFBW/2 ^
** a=-fIFOut-fIFBW/2 -a=+fIFOut+fIFBW/2
**
** Note that some equations are doubled to prevent round-off
** problems when calculating fIFBW/2
**
** The spur frequencies are computed as:
**
** fSpur = n * f1 - m * f2 - fOffset
**
** Parameters: f1 - The 1st local oscillator (LO) frequency
** of the tuner whose output we are examining
** f2 - The 1st local oscillator (LO) frequency
** of the adjacent tuner
** fOffset - The 2nd local oscillator of the tuner whose
** output we are examining
** fIFOut - Output IF center frequency
** fIFBW - Output IF Bandwidth
** nMaxH - max # of LO harmonics to search
** fp - If spur, positive distance to spur-free band edge (returned)
** fm - If spur, negative distance to spur-free band edge (returned)
**
** Returns: 1 if an LO spur would be present, otherwise 0.
**
** Dependencies: None.
**
** Revision History:
**
** SCR Date Author Description
** -------------------------------------------------------------------------
** N/A 01-21-2005 JWS Original, adapted from MT_DoubleConversion.
** 115 03-23-2007 DAD Fix declaration of spur due to truncation
** errors.
** 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).
** 177 S 02-26-2008 RSK Ver 1.18: Corrected calculation using LO1 > MAX/2
** Type casts added to preserve correct sign.
**
****************************************************************************/
static u32 IsSpurInAdjTunerBand(u32 bIsMyOutput,
u32 f1,
u32 f2,
u32 fOffset,
u32 fIFOut,
u32 fIFBW,
u32 fZIFBW,
u32 nMaxH, u32 * fp, u32 * fm)
{
u32 bSpurFound = 0;
const u32 fHalf_IFBW = fIFBW / 2;
const u32 fHalf_ZIFBW = fZIFBW / 2;
/* Calculate a scale factor for all frequencies, so that our
calculations all stay within 31 bits */
const u32 f_Scale =
((f1 +
(fOffset + fIFOut +
fHalf_IFBW) / nMaxH) / (MAX_UDATA / 2 / nMaxH)) + 1;
/*
** After this scaling, _f1, _f2, and _f3 are guaranteed to fit into
** signed data types (smaller than MAX_UDATA/2)
*/
const s32 _f1 = (s32) (f1 / f_Scale);
const s32 _f2 = (s32) (f2 / f_Scale);
const s32 _f3 = (s32) (fOffset / f_Scale);
const s32 c = (s32) (fIFOut - fHalf_IFBW) / (s32) f_Scale;
const s32 d = (s32) ((fIFOut + fHalf_IFBW) / f_Scale);
const s32 f = (s32) (fHalf_ZIFBW / f_Scale);
s32 ma, mb, mc, md, me, mf;
s32 fp_ = 0;
s32 fm_ = 0;
s32 n;
/*
** If the other tuner does not have an LO frequency defined,
** assume that we cannot interfere with it
*/
if (f2 == 0)
return 0;
/* Check out all multiples of f1 from -nMaxH to +nMaxH */
for (n = -(s32) nMaxH; n <= (s32) nMaxH; ++n) {
const s32 nf1 = n * _f1;
md = (_f3 + d - nf1) / _f2;
/* If # f2 harmonics > nMaxH, then no spurs present */
if (md <= -(s32) nMaxH)
break;
ma = (_f3 - d - nf1) / _f2;
if ((ma == md) || (ma >= (s32) (nMaxH)))
continue;
mc = (_f3 + c - nf1) / _f2;
if (mc != md) {
const s32 m = (n < 0) ? md : mc;
const s32 fspur = (nf1 + m * _f2 - _f3);
const s32 den = (bIsMyOutput ? n - 1 : n);
if (den == 0) {
fp_ = (d - fspur) * f_Scale;
fm_ = (fspur - c) * f_Scale;
} else {
fp_ =
(s32) RoundAwayFromZero((d - fspur) *
f_Scale, den);
fm_ =
(s32) RoundAwayFromZero((fspur - c) *
f_Scale, den);
}
if (((u32) abs(fm_) >= f_Scale)
&& ((u32) abs(fp_) >= f_Scale)) {
bSpurFound = 1;
break;
}
}
/* Location of Zero-IF-spur to be checked */
mf = (_f3 + f - nf1) / _f2;
me = (_f3 - f - nf1) / _f2;
if (me != mf) {
const s32 m = (n < 0) ? mf : me;
const s32 fspur = (nf1 + m * _f2 - _f3);
const s32 den = (bIsMyOutput ? n - 1 : n);
if (den == 0) {
fp_ = (d - fspur) * f_Scale;
fm_ = (fspur - c) * f_Scale;
} else {
fp_ =
(s32) RoundAwayFromZero((f - fspur) *
f_Scale, den);
fm_ =
(s32) RoundAwayFromZero((fspur + f) *
f_Scale, den);
}
if (((u32) abs(fm_) >= f_Scale)
&& ((u32) abs(fp_) >= f_Scale)) {
bSpurFound = 1;
break;
}
}
mb = (_f3 - c - nf1) / _f2;
if (ma != mb) {
const s32 m = (n < 0) ? mb : ma;
const s32 fspur = (nf1 + m * _f2 - _f3);
const s32 den = (bIsMyOutput ? n - 1 : n);
if (den == 0) {
fp_ = (d - fspur) * f_Scale;
fm_ = (fspur - c) * f_Scale;
} else {
fp_ =
(s32) RoundAwayFromZero((-c - fspur) *
f_Scale, den);
fm_ =
(s32) RoundAwayFromZero((fspur + d) *
f_Scale, den);
}
if (((u32) abs(fm_) >= f_Scale)
&& ((u32) abs(fp_) >= f_Scale)) {
bSpurFound = 1;
break;
}
}
}
/*
** Verify that fm & fp are both positive
** Add one to ensure next 1st IF choice is not right on the edge
*/
if (fp_ < 0) {
*fp = -fm_ + 1;
*fm = -fp_ + 1;
} else if (fp_ > 0) {
*fp = fp_ + 1;
*fm = fm_ + 1;
} else {
*fp = 1;
*fm = abs(fm_) + 1;
}
return bSpurFound;
}
#endif
/****************************************************************************
**
** Name: IsSpurInBand
@ -1539,16 +1249,11 @@ static u32 IsSpurInBand(struct MT2063_AvoidSpursData_t *pAS_Info,
const u32 d = pAS_Info->f_out + pAS_Info->f_out_bw / 2;
const u32 c = d - pAS_Info->f_out_bw;
const u32 f = pAS_Info->f_zif_bw / 2;
const u32 f_Scale = (f_LO1 / (MAX_UDATA / 2 / pAS_Info->maxH1)) + 1;
const u32 f_Scale = (f_LO1 / (UINT_MAX / 2 / pAS_Info->maxH1)) + 1;
s32 f_nsLO1, f_nsLO2;
s32 f_Spur;
u32 ma, mb, mc, md, me, mf;
u32 lo_gcd, gd_Scale, gc_Scale, gf_Scale, hgds, hgfs, hgcs;
#if MT2063_TUNER_CNT > 1
u32 index;
struct MT2063_AvoidSpursData_t *adj;
#endif
*fm = 0;
/*
@ -1628,37 +1333,6 @@ static u32 IsSpurInBand(struct MT2063_AvoidSpursData_t *pAS_Info,
}
}
#if MT2063_TUNER_CNT > 1
/* If no spur found, see if there are more tuners on the same board */
for (index = 0; index < TunerCount; ++index) {
adj = TunerList[index];
if (pAS_Info == adj) /* skip over our own data, don't process it */
continue;
/* Look for LO-related spurs from the adjacent tuner generated into my IF output */
if (IsSpurInAdjTunerBand(1, /* check my IF output */
pAS_Info->f_LO1, /* my fLO1 */
adj->f_LO1, /* the other tuner's fLO1 */
pAS_Info->f_LO2, /* my fLO2 */
pAS_Info->f_out, /* my fOut */
pAS_Info->f_out_bw, /* my output IF bandwidth */
pAS_Info->f_zif_bw, /* my Zero-IF bandwidth */
pAS_Info->maxH2, fp, /* minimum amount to move LO's positive */
fm)) /* miminum amount to move LO's negative */
return 1;
/* Look for LO-related spurs from my tuner generated into the adjacent tuner's IF output */
if (IsSpurInAdjTunerBand(0, /* check his IF output */
pAS_Info->f_LO1, /* my fLO1 */
adj->f_LO1, /* the other tuner's fLO1 */
adj->f_LO2, /* the other tuner's fLO2 */
adj->f_out, /* the other tuner's fOut */
adj->f_out_bw, /* the other tuner's output IF bandwidth */
pAS_Info->f_zif_bw, /* the other tuner's Zero-IF bandwidth */
adj->maxH2, fp, /* minimum amount to move LO's positive */
fm)) /* miminum amount to move LO's negative */
return 1;
}
#endif
/* No spurs found */
return 0;
}