renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-22 12:14:01 +08:00
Code

[media] mt2063: Simplify some functions

Browse Source 
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-07-21 03:02:16 -03:00
parent e1de3d18d4
commit e930b3a03e
1 changed files with 12 additions and 138 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

150
drivers/media/common/tuners/mt2063.c
View File

@ -75,7 +75,6 @@ struct MT2063_ExclZone_t {
* Structure of data needed for Spur Avoidance
*/
struct MT2063_AvoidSpursData_t {
u32 nAS_Algorithm;
u32 f_ref;
u32 f_in;
u32 f_LO1;
@ -410,7 +409,6 @@ struct mt2063_state {
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);
@ -606,29 +604,9 @@ static u32 mt2063_read(struct mt2063_state *state,
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)
{
/*
@ -640,78 +618,19 @@ 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
@ -1153,7 +1072,7 @@ static u32 IsSpurInBand(struct MT2063_AvoidSpursData_t *pAS_Info,
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) {
@ -1462,54 +1381,14 @@ static u32 MT2063_Open(struct dvb_frontend *fe)
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;
state->rcvr_mode = MT2063_CABLE_QAM;
if (state->MT2063_init != false) {
status = MT2063_ReInit(state);
if (status < 0)
return status;
}
if (status < 0)
/* MT2063_Close handles the un-registration of the tuner */
MT2063_Close(state);
else {
state->MT2063_init = true;
}
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;
}
@ -1815,11 +1694,6 @@ static u32 MT2063_GetParam(struct mt2063_state *state, enum MT2063_Param param,
*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;