From e930b3a03e28b3ac8d936eee431e58052e6cf26c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 21 Jul 2011 03:02:16 -0300 Subject: [media] mt2063: Simplify some functions Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/tuners/mt2063.c | 150 +++-------------------------------- 1 file changed, 12 insertions(+), 138 deletions(-) (limited to 'drivers/media/common') diff --git a/drivers/media/common/tuners/mt2063.c b/drivers/media/common/tuners/mt2063.c index 0ae6c1544771..10116356f304 100644 --- a/drivers/media/common/tuners/mt2063.c +++ b/drivers/media/common/tuners/mt2063.c @@ -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 ====================================== -//################################################################# -//================================================================= - -/***************************************************************************** -** -** 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; -- cgit v1.2.3-55-g7522