diff options
Diffstat (limited to 'drivers/media/common/tuners')
| -rw-r--r-- | drivers/media/common/tuners/mt2063.c | 959 |
1 files changed, 370 insertions, 589 deletions
diff --git a/drivers/media/common/tuners/mt2063.c b/drivers/media/common/tuners/mt2063.c index 4f634ad24e14..181deac72008 100644 --- a/drivers/media/common/tuners/mt2063.c +++ b/drivers/media/common/tuners/mt2063.c @@ -1,3 +1,22 @@ +/* + * Driver for mt2063 Micronas tuner + * + * Copyright (c) 2011 Mauro Carvalho Chehab <mchehab@redhat.com> + * + * This driver came from a driver originally written by Henry, made available + * by Terratec, at: + * http://linux.terratec.de/files/TERRATEC_H7/20110323_TERRATEC_H7_Linux.tar.gz + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation under version 2 of the License. + * + * 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. + */ + #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> @@ -89,8 +108,8 @@ struct MT2063_AvoidSpursData_t { }; /* - * Parameter for function MT2063_SetPowerMask that specifies the power down - * of various sections of the MT2063. + * Parameter for function MT2063_SetPowerMask that specifies the power down + * of various sections of the MT2063. */ enum MT2063_Mask_Bits { MT2063_REG_SD = 0x0040, /* Shutdown regulator */ @@ -134,9 +153,9 @@ enum MT2063_DNC_Output_Enable { }; /* -** Two-wire serial bus subaddresses of the tuner registers. -** Also known as the tuner's register addresses. -*/ + * Two-wire serial bus subaddresses of the tuner registers. + * Also known as the tuner's register addresses. + */ enum MT2063_Register_Offsets { MT2063_REG_PART_REV = 0, /* 0x00: Part/Rev Code */ MT2063_REG_LO1CQ_1, /* 0x01: LO1C Queued Byte 1 */ @@ -320,8 +339,7 @@ static u32 mt2063_read(struct mt2063_state *state, static int MT2063_Sleep(struct dvb_frontend *fe) { /* - ** ToDo: Add code here to implement a OS blocking - ** for a period of "nMinDelayTime" milliseconds. + * ToDo: Add code here to implement a OS blocking */ msleep(10); @@ -391,23 +409,14 @@ static struct MT2063_ExclZone_t *RemoveNode(struct MT2063_AvoidSpursData_t return pNext; } -/***************************************************************************** -** -** Name: MT_AddExclZone -** -** Description: Add (and merge) an exclusion zone into the list. -** If the range (f_min, f_max) is totally outside the -** 1st IF BW, ignore the entry. -** If the range (f_min, f_max) is negative, ignore the entry. -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 103 01-31-2005 DAD Ver 1.14: In MT_AddExclZone(), if the range -** (f_min, f_max) < 0, ignore the entry. -** -*****************************************************************************/ +/* + * MT_AddExclZone() + * + * Add (and merge) an exclusion zone into the list. + * If the range (f_min, f_max) is totally outside the + * 1st IF BW, ignore the entry. + * If the range (f_min, f_max) is negative, ignore the entry. + */ static void MT2063_AddExclZone(struct MT2063_AvoidSpursData_t *pAS_Info, u32 f_min, u32 f_max) { @@ -420,11 +429,11 @@ static void MT2063_AddExclZone(struct MT2063_AvoidSpursData_t *pAS_Info, && (f_min < (pAS_Info->f_if1_Center + (pAS_Info->f_if1_bw / 2))) && (f_min < f_max)) { /* - ** 1 2 3 4 5 6 - ** - ** New entry: |---| |--| |--| |-| |---| |--| - ** or or or or or - ** Existing: |--| |--| |--| |---| |-| |--| + * 1 2 3 4 5 6 + * + * New entry: |---| |--| |--| |-| |---| |--| + * or or or or or + * Existing: |--| |--| |--| |---| |-| |--| */ /* Check for our place in the list */ @@ -450,18 +459,16 @@ static void MT2063_AddExclZone(struct MT2063_AvoidSpursData_t *pAS_Info, while ((pNext != NULL) && (pNext->min_ < pNode->max_)) { if (pNext->max_ > pNode->max_) pNode->max_ = pNext->max_; - pNext = RemoveNode(pAS_Info, pNode, pNext); /* Remove pNext, return ptr to pNext->next */ + /* Remove pNext, return ptr to pNext->next */ + pNext = RemoveNode(pAS_Info, pNode, pNext); } } } /* -** Reset all exclusion zones. -** Add zones to protect the PLL FracN regions near zero -** -** N/A I 06-17-2008 RSK Ver 1.19: Refactoring avoidance of DECT -** frequencies into MT_ResetExclZones(). -*/ + * Reset all exclusion zones. + * Add zones to protect the PLL FracN regions near zero + */ static void MT2063_ResetExclZones(struct MT2063_AvoidSpursData_t *pAS_Info) { u32 center; @@ -525,32 +532,21 @@ static void MT2063_ResetExclZones(struct MT2063_AvoidSpursData_t *pAS_Info) } } -/***************************************************************************** -** -** Name: MT_ChooseFirstIF -** -** Description: Choose the best available 1st IF -** If f_Desired is not excluded, choose that first. -** Otherwise, return the value closest to f_Center that is -** not excluded -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 117 03-29-2007 RSK Ver 1.15: Re-wrote to match search order from -** tuner DLL. -** 147 07-27-2007 RSK Ver 1.17: Corrected calculation (-) to (+) -** Added logic to force f_Center within 1/2 f_Step. -** -*****************************************************************************/ +/* + * MT_ChooseFirstIF - Choose the best available 1st IF + * If f_Desired is not excluded, choose that first. + * Otherwise, return the value closest to f_Center that is + * not excluded + */ static u32 MT2063_ChooseFirstIF(struct MT2063_AvoidSpursData_t *pAS_Info) { /* - ** Update "f_Desired" to be the nearest "combinational-multiple" of "f_LO1_Step". - ** The resulting number, F_LO1 must be a multiple of f_LO1_Step. And F_LO1 is the arithmetic sum - ** of f_in + f_Center. Neither f_in, nor f_Center must be a multiple of f_LO1_Step. - ** However, the sum must be. + * Update "f_Desired" to be the nearest "combinational-multiple" of + * "f_LO1_Step". + * The resulting number, F_LO1 must be a multiple of f_LO1_Step. + * And F_LO1 is the arithmetic sum of f_in + f_Center. + * Neither f_in, nor f_Center must be a multiple of f_LO1_Step. + * However, the sum must be. */ const u32 f_Desired = pAS_Info->f_LO1_Step * @@ -575,7 +571,10 @@ static u32 MT2063_ChooseFirstIF(struct MT2063_AvoidSpursData_t *pAS_Info) if (pAS_Info->nZones == 0) return f_Desired; - /* f_Center needs to be an integer multiple of f_Step away from f_Desired */ + /* + * f_Center needs to be an integer multiple of f_Step away + * from f_Desired + */ if (pAS_Info->f_if1_Center > f_Desired) f_Center = f_Desired + @@ -589,7 +588,10 @@ static u32 MT2063_ChooseFirstIF(struct MT2063_AvoidSpursData_t *pAS_Info) ((f_Desired - pAS_Info->f_if1_Center + f_Step / 2) / f_Step); - /* Take MT_ExclZones, center around f_Center and change the resolution to f_Step */ + /* + * Take MT_ExclZones, center around f_Center and change the + * resolution to f_Step + */ while (pNode != NULL) { /* floor function */ tmpMin = @@ -618,13 +620,13 @@ static u32 MT2063_ChooseFirstIF(struct MT2063_AvoidSpursData_t *pAS_Info) } /* - ** If the desired is okay, return with it + * If the desired is okay, return with it */ if (bDesiredExcluded == 0) return f_Desired; /* - ** If the desired is excluded and the center is okay, return with it + * If the desired is excluded and the center is okay, return with it */ if (bZeroExcluded == 0) return f_Center; @@ -644,30 +646,14 @@ static u32 MT2063_ChooseFirstIF(struct MT2063_AvoidSpursData_t *pAS_Info) return f_Center + (bestDiff * f_Step); } -/**************************************************************************** -** -** Name: gcd -** -** Description: Uses Euclid's algorithm -** -** Parameters: u, v - unsigned values whose GCD is desired. -** -** Global: None -** -** Returns: greatest common divisor of u and v, if either value -** is 0, the other value is returned as the result. -** -** Dependencies: None. -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** N/A 06-01-2004 JWS Original -** N/A 08-03-2004 DAD Changed to Euclid's since it can handle -** unsigned numbers. -** -****************************************************************************/ +/** + * gcd() - Uses Euclid's algorithm + * + * @u, @v: Unsigned values whose GCD is desired. + * + * Returns THE greatest common divisor of u and v, if either value is 0, + * the other value is returned as the result. + */ static u32 MT2063_gcd(u32 u, u32 v) { u32 r; @@ -681,39 +667,25 @@ static u32 MT2063_gcd(u32 u, u32 v) return u; } -/**************************************************************************** -** -** Name: IsSpurInBand -** -** Description: Checks to see if a spur will be present within the IF's -** bandwidth. (fIFOut +/- fIFBW, -fIFOut +/- fIFBW) -** -** ma mb 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 -** -** Parameters: pAS_Info - Avoid Spurs information block -** fm - If spur, amount f_IF1 has to move negative -** fp - If spur, amount f_IF1 has to move positive -** -** Global: None -** -** Returns: 1 if an LO spur would be present, otherwise 0. -** -** Dependencies: None. -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** N/A 11-28-2002 DAD Implemented algorithm from applied patent -** -****************************************************************************/ +/** + * IsSpurInBand() - Checks to see if a spur will be present within the IF's + * bandwidth. (fIFOut +/- fIFBW, -fIFOut +/- fIFBW) + * + * ma mb 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 + * + * @pAS_Info: Avoid Spurs information block + * @fm: If spur, amount f_IF1 has to move negative + * @fp: If spur, amount f_IF1 has to move positive + * + * Returns 1 if an LO spur would be present, otherwise 0. + */ static u32 IsSpurInBand(struct MT2063_AvoidSpursData_t *pAS_Info, u32 *fm, u32 * fp) { @@ -814,22 +786,12 @@ static u32 IsSpurInBand(struct MT2063_AvoidSpursData_t *pAS_Info, return 0; } -/***************************************************************************** -** -** Name: MT_AvoidSpurs -** -** Description: Main entry point to avoid spurs. -** Checks for existing spurs in present LO1, LO2 freqs -** and if present, chooses spur-free LO1, LO2 combination -** that tunes the same input/output frequencies. -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 096 04-06-2005 DAD Ver 1.11: Fix divide by 0 error if maxH==0. -** -*****************************************************************************/ +/* + * MT_AvoidSpurs() - Main entry point to avoid spurs. + * Checks for existing spurs in present LO1, LO2 freqs + * and if present, chooses spur-free LO1, LO2 combination + * that tunes the same input/output frequencies. + */ static u32 MT2063_AvoidSpurs(struct MT2063_AvoidSpursData_t *pAS_Info) { u32 status = 0; @@ -841,15 +803,15 @@ static u32 MT2063_AvoidSpurs(struct MT2063_AvoidSpursData_t *pAS_Info) return 0; /* - ** Avoid LO Generated Spurs - ** - ** Make sure that have no LO-related spurs within the IF output - ** bandwidth. - ** - ** If there is an LO spur in this band, start at the current IF1 frequency - ** and work out until we find a spur-free frequency or run up against the - ** 1st IF SAW band edge. Use temporary copies of fLO1 and fLO2 so that they - ** will be unchanged if a spur-free setting is not found. + * Avoid LO Generated Spurs + * + * Make sure that have no LO-related spurs within the IF output + * bandwidth. + * + * If there is an LO spur in this band, start at the current IF1 frequency + * and work out until we find a spur-free frequency or run up against the + * 1st IF SAW band edge. Use temporary copies of fLO1 and fLO2 so that they + * will be unchanged if a spur-free setting is not found. */ pAS_Info->bSpurPresent = IsSpurInBand(pAS_Info, &fm, &fp); if (pAS_Info->bSpurPresent) { @@ -887,15 +849,15 @@ static u32 MT2063_AvoidSpurs(struct MT2063_AvoidSpursData_t *pAS_Info) pAS_Info->bSpurPresent = IsSpurInBand(pAS_Info, &fm, &fp); /* - ** Continue while the new 1st IF is still within the 1st IF bandwidth - ** and there is a spur in the band (again) + * Continue while the new 1st IF is still within the 1st IF bandwidth + * and there is a spur in the band (again) */ } while ((2 * delta_IF1 + pAS_Info->f_out_bw <= pAS_Info->f_if1_bw) && pAS_Info->bSpurPresent); /* - ** Use the LO-spur free values found. If the search went all the way to - ** the 1st IF band edge and always found spurs, just leave the original - ** choice. It's as "good" as any other. + * Use the LO-spur free values found. If the search went all + * the way to the 1st IF band edge and always found spurs, just + * leave the original choice. It's as "good" as any other. */ if (pAS_Info->bSpurPresent == 1) { status |= MT2063_SPUR_PRESENT_ERR; @@ -912,7 +874,6 @@ static u32 MT2063_AvoidSpurs(struct MT2063_AvoidSpursData_t *pAS_Info) return status; } - /* * Constants used by the tuning algorithm */ @@ -936,35 +897,29 @@ static u32 MT2063_AvoidSpurs(struct MT2063_AvoidSpursData_t *pAS_Info) #define MT2063_MAX_UPC_FREQ (2750000000UL) /* Maximum LO1 frequency (in Hz) */ /* -** Define the supported Part/Rev codes for the MT2063 -*/ + * Define the supported Part/Rev codes for the MT2063 + */ #define MT2063_B0 (0x9B) #define MT2063_B1 (0x9C) #define MT2063_B2 (0x9D) #define MT2063_B3 (0x9E) /* -** Constants for setting receiver modes. -** (6 modes defined at this time, enumerated by MT2063_RCVR_MODES) -** (DNC1GC & DNC2GC are the values, which are used, when the specific -** DNC Output is selected, the other is always off) -** -** If PAL-L or L' is received, set: -** MT2063_SetParam(hMT2063,MT2063_TAGC,1); -** -** --------------+---------------------------------------------- -** Mode 0 : | MT2063_CABLE_QAM -** Mode 1 : | MT2063_CABLE_ANALOG -** Mode 2 : | MT2063_OFFAIR_COFDM -** Mode 3 : | MT2063_OFFAIR_COFDM_SAWLESS -** Mode 4 : | MT2063_OFFAIR_ANALOG -** Mode 5 : | MT2063_OFFAIR_8VSB -** --------------+----+----+----+----+-----+-----+-------------- -** Mode | 0 | 1 | 2 | 3 | 4 | 5 | -** --------------+----+----+----+----+-----+-----+ -** -** -*/ + * Constants for setting receiver modes. + * (6 modes defined at this time, enumerated by MT2063_RCVR_MODES) + * (DNC1GC & DNC2GC are the values, which are used, when the specific + * DNC Output is selected, the other is always off) + * + * enum MT2063_RCVR_MODES + * -------------+---------------------------------------------- + * Mode 0 : | MT2063_CABLE_QAM + * Mode 1 : | MT2063_CABLE_ANALOG + * Mode 2 : | MT2063_OFFAIR_COFDM + * Mode 3 : | MT2063_OFFAIR_COFDM_SAWLESS + * Mode 4 : | MT2063_OFFAIR_ANALOG + * Mode 5 : | MT2063_OFFAIR_8VSB + * --------------+---------------------------------------------- + */ static const u8 RFAGCEN[] = { 0, 0, 0, 0, 0, 0 }; static const u8 LNARIN[] = { 0, 0, 3, 3, 3, 3 }; static const u8 FIFFQEN[] = { 1, 1, 1, 1, 1, 1 }; @@ -1053,117 +1008,109 @@ static u32 mt2063_set_dnc_output_enable(struct mt2063_state *state, /* selects, which DNC output is used */ switch (nValue) { case MT2063_DNC_NONE: - { - val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | 0x03; /* Set DNC1GC=3 */ - if (state->reg[MT2063_REG_DNC_GAIN] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_DNC_GAIN, - val); + val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | 0x03; /* Set DNC1GC=3 */ + if (state->reg[MT2063_REG_DNC_GAIN] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_DNC_GAIN, + val); - val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | 0x03; /* Set DNC2GC=3 */ - if (state->reg[MT2063_REG_VGA_GAIN] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_VGA_GAIN, - val); + val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | 0x03; /* Set DNC2GC=3 */ + if (state->reg[MT2063_REG_VGA_GAIN] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_VGA_GAIN, + val); - val = (state->reg[MT2063_REG_RSVD_20] & ~0x40); /* Set PD2MUX=0 */ - if (state->reg[MT2063_REG_RSVD_20] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_RSVD_20, - val); + val = (state->reg[MT2063_REG_RSVD_20] & ~0x40); /* Set PD2MUX=0 */ + if (state->reg[MT2063_REG_RSVD_20] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_RSVD_20, + val); - break; - } + break; case MT2063_DNC_1: - { - val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | (DNC1GC[state->rcvr_mode] & 0x03); /* Set DNC1GC=x */ - if (state->reg[MT2063_REG_DNC_GAIN] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_DNC_GAIN, - val); + val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | (DNC1GC[state->rcvr_mode] & 0x03); /* Set DNC1GC=x */ + if (state->reg[MT2063_REG_DNC_GAIN] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_DNC_GAIN, + val); - val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | 0x03; /* Set DNC2GC=3 */ - if (state->reg[MT2063_REG_VGA_GAIN] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_VGA_GAIN, - val); + val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | 0x03; /* Set DNC2GC=3 */ + if (state->reg[MT2063_REG_VGA_GAIN] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_VGA_GAIN, + val); - val = (state->reg[MT2063_REG_RSVD_20] & ~0x40); /* Set PD2MUX=0 */ - if (state->reg[MT2063_REG_RSVD_20] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_RSVD_20, - val); + val = (state->reg[MT2063_REG_RSVD_20] & ~0x40); /* Set PD2MUX=0 */ + if (state->reg[MT2063_REG_RSVD_20] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_RSVD_20, + val); - break; - } + break; case MT2063_DNC_2: - { - val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | 0x03; /* Set DNC1GC=3 */ - if (state->reg[MT2063_REG_DNC_GAIN] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_DNC_GAIN, - val); + val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | 0x03; /* Set DNC1GC=3 */ + if (state->reg[MT2063_REG_DNC_GAIN] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_DNC_GAIN, + val); - val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | (DNC2GC[state->rcvr_mode] & 0x03); /* Set DNC2GC=x */ - if (state->reg[MT2063_REG_VGA_GAIN] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_VGA_GAIN, - val); + val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | (DNC2GC[state->rcvr_mode] & 0x03); /* Set DNC2GC=x */ + if (state->reg[MT2063_REG_VGA_GAIN] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_VGA_GAIN, + val); - val = (state->reg[MT2063_REG_RSVD_20] | 0x40); /* Set PD2MUX=1 */ - if (state->reg[MT2063_REG_RSVD_20] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_RSVD_20, - val); + val = (state->reg[MT2063_REG_RSVD_20] | 0x40); /* Set PD2MUX=1 */ + if (state->reg[MT2063_REG_RSVD_20] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_RSVD_20, + val); - break; - } + break; case MT2063_DNC_BOTH: - { - val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | (DNC1GC[state->rcvr_mode] & 0x03); /* Set DNC1GC=x */ - if (state->reg[MT2063_REG_DNC_GAIN] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_DNC_GAIN, - val); + val = (state->reg[MT2063_REG_DNC_GAIN] & 0xFC) | (DNC1GC[state->rcvr_mode] & 0x03); /* Set DNC1GC=x */ + if (state->reg[MT2063_REG_DNC_GAIN] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_DNC_GAIN, + val); - val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | (DNC2GC[state->rcvr_mode] & 0x03); /* Set DNC2GC=x */ - if (state->reg[MT2063_REG_VGA_GAIN] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_VGA_GAIN, - val); + val = (state->reg[MT2063_REG_VGA_GAIN] & 0xFC) | (DNC2GC[state->rcvr_mode] & 0x03); /* Set DNC2GC=x */ + if (state->reg[MT2063_REG_VGA_GAIN] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_VGA_GAIN, + val); - val = (state->reg[MT2063_REG_RSVD_20] | 0x40); /* Set PD2MUX=1 */ - if (state->reg[MT2063_REG_RSVD_20] != - val) - status |= - mt2063_setreg(state, - MT2063_REG_RSVD_20, - val); + val = (state->reg[MT2063_REG_RSVD_20] | 0x40); /* Set PD2MUX=1 */ + if (state->reg[MT2063_REG_RSVD_20] != + val) + status |= + mt2063_setreg(state, + MT2063_REG_RSVD_20, + val); - break; - } + break; default: break; } @@ -1171,89 +1118,47 @@ static u32 mt2063_set_dnc_output_enable(struct mt2063_state *state, return status; } -/****************************************************************************** -** -** Name: MT2063_SetReceiverMode -** -** Description: Set the MT2063 receiver mode -** -** --------------+---------------------------------------------- -** Mode 0 : | MT2063_CABLE_QAM -** Mode 1 : | MT2063_CABLE_ANALOG -** Mode 2 : | MT2063_OFFAIR_COFDM -** Mode 3 : | MT2063_OFFAIR_COFDM_SAWLESS -** Mode 4 : | MT2063_OFFAIR_ANALOG -** Mode 5 : | MT2063_OFFAIR_8VSB -** --------------+----+----+----+----+-----+-------------------- -** (DNC1GC & DNC2GC are the values, which are used, when the specific -** DNC Output is selected, the other is always off) -** -** |<---------- Mode -------------->| -** Reg Field | 0 | 1 | 2 | 3 | 4 | 5 | -** ------------+-----+-----+-----+-----+-----+-----+ -** RFAGCen | OFF | OFF | OFF | OFF | OFF | OFF -** LNARin | 0 | 0 | 3 | 3 | 3 | 3 -** FIFFQen | 1 | 1 | 1 | 1 | 1 | 1 -** FIFFq | 0 | 0 | 0 | 0 | 0 | 0 -** DNC1gc | 0 | 0 | 0 | 0 | 0 | 0 -** DNC2gc | 0 | 0 | 0 | 0 | 0 | 0 -** GCU Auto | 1 | 1 | 1 | 1 | 1 | 1 -** LNA max Atn | 31 | 31 | 31 | 31 | 31 | 31 -** LNA Target | 44 | 43 | 43 | 43 | 43 | 43 -** ign RF Ovl | 0 | 0 | 0 | 0 | 0 | 0 -** RF max Atn | 31 | 31 | 31 | 31 | 31 | 31 -** PD1 Target | 36 | 36 | 38 | 38 | 36 | 38 -** ign FIF Ovl | 0 | 0 | 0 | 0 | 0 | 0 -** FIF max Atn | 5 | 5 | 5 | 5 | 5 | 5 -** PD2 Target | 40 | 33 | 42 | 42 | 33 | 42 -** -** -** Parameters: state - ptr to mt2063_state structure -** Mode - desired reciever mode -** -** Usage: status = MT2063_SetReceiverMode(hMT2063, Mode); -** -** Returns: status: -** MT_OK - No errors -** MT_COMM_ERR - Serial bus communications error -** -** Dependencies: mt2063_setreg - Write a byte of data to a HW register. -** Assumes that the tuner cache is valid. -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 138 06-19-2007 DAD Ver 1.00: Initial, derived from mt2067_b. -** N/A 01-10-2007 PINZ Added additional GCU Settings, FIFF Calib will be triggered -** 155 10-01-2007 DAD Ver 1.06: Add receiver mode for SECAM positive -** modulation -** (MT2063_ANALOG_TV_POS_NO_RFAGC_MODE) -** N/A 10-22-2007 PINZ Ver 1.07: Changed some Registers at init to have -** the same settings as with MT Launcher -** N/A 10-30-2007 PINZ Add SetParam VGAGC & VGAOI -** Add SetParam DNC_OUTPUT_ENABLE -** Removed VGAGC from receiver mode, -** default now 1 -** N/A 10-31-2007 PINZ Ver 1.08: Add SetParam TAGC, removed from rcvr-mode -** Add SetParam AMPGC, removed from rcvr-mode -** Corrected names of GCU values -** reorganized receiver modes, removed, -** (MT2063_ANALOG_TV_POS_NO_RFAGC_MODE) -** Actualized Receiver-Mode values -** N/A 11-12-2007 PINZ Ver 1.09: Actualized Receiver-Mode values -** N/A 11-27-2007 PINZ Improved buffered writing -** 01-03-2008 PINZ Ver 1.10: Added a trigger of BYPATNUP for -** correct wakeup of the LNA after shutdown -** Set AFCsd = 1 as default -** Changed CAP1sel default -** 01-14-2008 PINZ Ver 1.11: Updated gain settings -** 04-18-2008 PINZ Ver 1.15: Add SetParam LNARIN & PDxTGT -** Split SetParam up to ACLNA / ACLNA_MAX -** removed ACLNA_INRC/DECR (+RF & FIF) -** removed GCUAUTO / BYPATNDN/UP -** -******************************************************************************/ +/* + * MT2063_SetReceiverMode() - Set the MT2063 receiver mode +** + * enum MT2063_RCVR_MODES + * --------------+---------------------------------------------- + * Mode 0 : | MT2063_CABLE_QAM + * Mode 1 : | MT2063_CABLE_ANALOG + * Mode 2 : | MT2063_OFFAIR_COFDM + * Mode 3 : | MT2063_OFFAIR_COFDM_SAWLESS + * Mode 4 : | MT2063_OFFAIR_ANALOG + * Mode 5 : | MT2063_OFFAIR_8VSB + * --------------+---------------------------------------------- + * (DNC1GC & DNC2GC are the values, which are used, when the specific + * DNC Output is selected, the other is always off) + * + * |<---------- Mode -------------->| + * Reg Field | 0 | 1 | 2 | 3 | 4 | 5 | + * ------------+-----+-----+-----+-----+-----+-----+ + * RFAGCen | OFF | OFF | OFF | OFF | OFF | OFF + * LNARin | 0 | 0 | 3 | 3 | 3 | 3 + * FIFFQen | 1 | 1 | 1 | 1 | 1 | 1 + * FIFFq | 0 | 0 | 0 | 0 | 0 | 0 + * DNC1gc | 0 | 0 | 0 | 0 | 0 | 0 + * DNC2gc | 0 | 0 | 0 | 0 | 0 | 0 + * GCU Auto | 1 | 1 | 1 | 1 | 1 | 1 + * LNA max Atn | 31 | 31 | 31 | 31 | 31 | 31 + * LNA Target | 44 | 43 | 43 | 43 | 43 | 43 + * ign RF Ovl | 0 | 0 | 0 | 0 | 0 | 0 + * RF max Atn | 31 | 31 | 31 | 31 | 31 | 31 + * PD1 Target | 36 | 36 | 38 | 38 | 36 | 38 + * ign FIF Ovl | 0 | 0 | 0 | 0 | 0 | 0 + * FIF max Atn | 5 | 5 | 5 | 5 | 5 | 5 + * PD2 Target | 40 | 33 | 42 | 42 | 33 | 42 + * + * + * @state: ptr to mt2063_state structure + * @Mode: desired reciever mode + * + * Note: Register cache must be valid for it to work + */ + static u32 MT2063_SetReceiverMode(struct mt2063_state *state, enum MT2063_RCVR_MODES Mode) { @@ -1382,37 +1287,19 @@ static u32 MT2063_SetReceiverMode(struct mt2063_state *state, return status; } -/**************************************************************************** -** -** Name: MT2063_ClearPowerMaskBits -** -** Description: Clears the power-down mask bits for various sections of -** the MT2063 -** -** Parameters: h - Tuner handle (returned by MT2063_Open) -** Bits - Mask bits to be cleared. -** -** See definition of MT2063_Mask_Bits type for description -** of each of the power bits. -** -** Returns: status: -** MT_OK - No errors -** MT_INV_HANDLE - Invalid tuner handle -** MT_COMM_ERR - Serial bus communications error -** -** Dependencies: USERS MUST CALL MT2063_Open() FIRST! -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 138 06-19-2007 DAD Ver 1.00: Initial, derived from mt2067_b. -** -****************************************************************************/ +/* + * MT2063_ClearPowerMaskBits () - Clears the power-down mask bits for various + * sections of the MT2063 + * + * @Bits: Mask bits to be cleared. + * + * See definition of MT2063_Mask_Bits type for description + * of each of the power bits. + */ static u32 MT2063_ClearPowerMaskBits(struct mt2063_state *state, enum MT2063_Mask_Bits Bits) { - u32 status = 0; /* Status to be returned */ + u32 status = 0; Bits = (enum MT2063_Mask_Bits)(Bits & MT2063_ALL_SD); /* Only valid bits for this tuner */ if ((Bits & 0xFF00) != 0) { @@ -1433,42 +1320,19 @@ static u32 MT2063_ClearPowerMaskBits(struct mt2063_state *state, return status; } -/**************************************************************************** -** -** Name: MT2063_SoftwareShutdown -** -** Description: Enables or disables software shutdown function. When -** Shutdown==1, any section whose power mask is set will be -** shutdown. -** -** Parameters: h - Tuner handle (returned by MT2063_Open) -** Shutdown - 1 = shutdown the masked sections, otherwise -** power all sections on -** -** Returns: status: -** MT_OK - No errors -** MT_INV_HANDLE - Invalid tuner handle -** MT_COMM_ERR - Serial bus communications error -** -** Dependencies: USERS MUST CALL MT2063_Open() FIRST! -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 138 06-19-2007 DAD Ver 1.00: Initial, derived from mt2067_b. -** 01-03-2008 PINZ Ver 1.xx: Added a trigger of BYPATNUP for -** correct wakeup of the LNA -** -****************************************************************************/ +/* + * MT2063_SoftwareShutdown() - Enables or disables software shutdown function. + * When Shutdown is 1, any section whose power + * mask is set will be shutdown. + */ static u32 MT2063_SoftwareShutdown(struct mt2063_state *state, u8 Shutdown) { - u32 status; /* Status to be returned */ + u32 status; if (Shutdown == 1) - state->reg[MT2063_REG_PWR_1] |= 0x04; /* Turn the bit on */ + state->reg[MT2063_REG_PWR_1] |= 0x04; else - state->reg[MT2063_REG_PWR_1] &= ~0x04; /* Turn off the bit */ + state->reg[MT2063_REG_PWR_1] &= ~0x04; status = mt2063_write(state, MT2063_REG_PWR_1, @@ -1500,36 +1364,24 @@ static u32 MT2063_Round_fLO(u32 f_LO, u32 f_LO_Step, u32 f_ref) + f_LO_Step * (((f_LO % f_ref) + (f_LO_Step / 2)) / f_LO_Step); } -/**************************************************************************** -** -** Name: fLO_FractionalTerm -** -** Description: Calculates the portion contributed by FracN / denom. -** -** This function preserves maximum precision without -** risk of overflow. It accurately calculates -** f_ref * num / denom to within 1 HZ with fixed math. -** -** Parameters: num - Fractional portion of the multiplier -** denom - denominator portion of the ratio -** This routine successfully handles denom values -** up to and including 2^18. -** f_Ref - SRO frequency. This calculation handles -** f_ref as two separate 14-bit fields. -** Therefore, a maximum value of 2^28-1 -** may safely be used for f_ref. This is -** the genesis of the magic number "14" and the -** magic mask value of 0x03FFF. -** -** Returns: f_ref * num / denom -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 138 06-19-2007 DAD Ver 1.00: Initial, derived from mt2067_b. -** -****************************************************************************/ +/** + * fLO_FractionalTerm() - Calculates the portion contributed by FracN / denom. + * This function preserves maximum precision without + * risk of overflow. It accurately calculates + * f_ref * num / denom to within 1 HZ with fixed math. + * + * @num : Fractional portion of the multiplier + * @denom: denominator portion of the ratio + * @f_Ref: SRO frequency. + * + * This calculation handles f_ref as two separate 14-bit fields. + * Therefore, a maximum value of 2^28-1 may safely be used for f_ref. + * This is the genesis of the magic number "14" and the magic mask value of + * 0x03FFF. + * + * This routine successfully handles denom values up to and including 2^18. + * Returns: f_ref * num / denom + */ static u32 MT2063_fLO_FractionalTerm(u32 f_ref, u32 num, u32 denom) { u32 t1 = (f_ref >> 14) * num; @@ -1540,33 +1392,23 @@ static u32 MT2063_fLO_FractionalTerm(u32 f_ref, u32 num, u32 denom) return (term1 << 14) + term2; } -/**************************************************************************** -** -** Name: CalcLO1Mult -** -** Description: Calculates Integer divider value and the numerator -** value for a FracN PLL. -** -** This function assumes that the f_LO and f_Ref are -** evenly divisible by f_LO_Step. -** -** Parameters: Div - OUTPUT: Whole number portion of the multiplier -** FracN - OUTPUT: Fractional portion of the multiplier -** f_LO - desired LO frequency. -** f_LO_Step - Minimum step size for the LO (in Hz). -** f_Ref - SRO frequency. -** f_Avoid - Range of PLL frequencies to avoid near -** integer multiples of f_Ref (in Hz). -** -** Returns: Recalculated LO frequency. -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 138 06-19-2007 DAD Ver 1.00: Initial, derived from mt2067_b. -** -****************************************************************************/ +/* + * CalcLO1Mult()- Calculates Integer divider value and the numerator + * value for a FracN PLL. + * + * This function assumes that the f_LO and f_Ref are + * evenly divisible by f_LO_Step. + * + * @Div: OUTPUT: Whole number portion of the multiplier + * @FracN: OUTPUT: Fractional portion of the multiplier + * @f_LO: desired LO frequency. + * @f_LO_Step: Minimum step size for the LO (in Hz). + * @f_Ref: SRO frequency. + * @f_Avoid: Range of PLL frequencies to avoid near integer multiples + * of f_Ref (in Hz). + * + * Returns: Recalculated LO frequency. + */ static u32 MT2063_CalcLO1Mult(u32 *Div, u32 *FracN, u32 f_LO, @@ -1583,33 +1425,23 @@ static u32 MT2063_CalcLO1Mult(u32 *Div, return (f_Ref * (*Div)) + MT2063_fLO_FractionalTerm(f_Ref, *FracN, 64); } -/**************************************************************************** -** -** Name: CalcLO2Mult -** -** Description: Calculates Integer divider value and the numerator -** value for a FracN PLL. -** -** This function assumes that the f_LO and f_Ref are -** evenly divisible by f_LO_Step. -** -** Parameters: Div - OUTPUT: Whole number portion of the multiplier -** FracN - OUTPUT: Fractional portion of the multiplier -** f_LO - desired LO frequency. -** f_LO_Step - Minimum step size for the LO (in Hz). -** f_Ref - SRO frequency. -** f_Avoid - Range of PLL frequencies to avoid near -** integer multiples of f_Ref (in Hz). -** -** Returns: Recalculated LO frequency. -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 138 06-19-2007 DAD Ver 1.00: Initial, derived from mt2067_b. -** -****************************************************************************/ +/** + * CalcLO2Mult() - Calculates Integer divider value and the numerator + * value for a FracN PLL. + * + * This function assumes that the f_LO and f_Ref are + * evenly divisible by f_LO_Step. + * + * @Div: OUTPUT: Whole number portion of the multiplier + * @FracN: OUTPUT: Fractional portion of the multiplier + * @f_LO: desired LO frequency. + * @f_LO_Step: Minimum step size for the LO (in Hz). + * @f_Ref: SRO frequency. + * @f_Avoid: Range of PLL frequencies to avoid near + * integer multiples of f_Ref (in Hz). + * + * Returns: Recalculated LO frequency. + */ static u32 MT2063_CalcLO2Mult(u32 *Div, u32 *FracN, u32 f_LO, @@ -1627,28 +1459,15 @@ static u32 MT2063_CalcLO2Mult(u32 *Div, 8191); } -/**************************************************************************** -** -** Name: FindClearTuneFilter -** -** Description: Calculate the corrrect ClearTune filter to be used for -** a given input frequency. -** -** Parameters: state - ptr to tuner data structure -** f_in - RF input center frequency (in Hz). -** -** Returns: ClearTune filter number (0-31) -** -** Dependencies: MUST CALL MT2064_Open BEFORE FindClearTuneFilter! -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 04-10-2008 PINZ Ver 1.14: Use software-controlled ClearTune -** cross-over frequency values. -** -****************************************************************************/ +/* + * FindClearTuneFilter() - Calculate the corrrect ClearTune filter to be + * used for a given input frequency. + * + * @state: ptr to tuner data structure + * @f_in: RF input center frequency (in Hz). + * + * Returns: ClearTune filter number (0-31) + */ static u32 FindClearTuneFilter(struct mt2063_state *state, u32 f_in) { u32 RFBand; @@ -1667,51 +1486,13 @@ static u32 FindClearTuneFilter(struct mt2063_state *state, u32 f_in) return RFBand; } -/**************************************************************************** -** -** Name: MT2063_Tune -** -** Description: Change the tuner's tuned frequency to RFin. -** -** Parameters: h - Open handle to the tuner (from MT2063_Open). -** f_in - RF input center frequency (in Hz). -** -** Returns: status: -** MT_OK - No errors -** MT_INV_HANDLE - Invalid tuner handle -** MT_UPC_UNLOCK - Upconverter PLL unlocked -** MT_DNC_UNLOCK - Downconverter PLL unlocked -** MT_COMM_ERR - Serial bus communications error -** MT_SPUR_CNT_MASK - Count of avoided LO spurs -** MT_SPUR_PRESENT - LO spur possible in output -** MT_FIN_RANGE - Input freq out of range -** MT_FOUT_RANGE - Output freq out of range -** MT_UPC_RANGE - Upconverter freq out of range -** MT_DNC_RANGE - Downconverter freq out of range -** -** Dependencies: MUST CALL MT2063_Open BEFORE MT2063_Tune! -** -** MT_ReadSub - Read data from the two-wire serial bus -** MT_WriteSub - Write data to the two-wire serial bus -** MT_Sleep - Delay execution for x milliseconds -** MT2063_GetLocked - Checks to see if LO1 and LO2 are locked -** -** Revision History: -** -** SCR Date Author Description -** ------------------------------------------------------------------------- -** 138 06-19-2007 DAD Ver 1.00: Initial, derived from mt2067_b. -** 04-10-2008 PINZ Ver 1.05: Use software-controlled ClearTune -** cross-over frequency values. -** 175 I 16-06-2008 PINZ Ver 1.16: Add control to avoid US DECT freqs. -** 175 I 06-19-2008 RSK Ver 1.17: Refactor DECT control to SpurAvoid. -** 06-24-2008 PINZ Ver 1.18: Add Get/SetParam CTFILT_SW -** -****************************************************************************/ +/* + * MT2063_Tune() - Change the tuner's tuned frequency to RFin. + */ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) { /* RF input center frequency */ - u32 status = 0; /* status of operation */ + u32 status = 0; u32 LO1; /* 1st LO register value */ u32 Num1; /* Numerator for LO1 reg. value */ u32 f_IF1; /* 1st IF requested */ @@ -1735,7 +1516,7 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) return -EINVAL; /* - ** Save original LO1 and LO2 register values + * Save original LO1 and LO2 register values */ ofLO1 = state->AS_Data.f_LO1; ofLO2 = state->AS_Data.f_LO2; @@ -1743,7 +1524,7 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) ofout = state->AS_Data.f_out; /* - ** Find and set RF Band setting + * Find and set RF Band setting */ if (state->ctfilt_sw == 1) { val = (state->reg[MT2063_REG_CTUNE_CTRL] | 0x08); @@ -1763,7 +1544,7 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) } /* - ** Read the FIFF Center Frequency from the tuner + * Read the FIFF Center Frequency from the tuner */ if (status >= 0) { status |= @@ -1773,7 +1554,7 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) fiffc = state->reg[MT2063_REG_FIFFC]; } /* - ** Assign in the requested values + * Assign in the requested values */ state->AS_Data.f_in = f_in; /* Request a 1st IF such that LO1 is on a step size */ @@ -1783,8 +1564,8 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) state->AS_Data.f_ref) - f_in; /* - ** Calculate frequency settings. f_IF1_FREQ + f_in is the - ** desired LO1 frequency + * Calculate frequency settings. f_IF1_FREQ + f_in is the + * desired LO1 frequency */ MT2063_ResetExclZones(&state->AS_Data); @@ -1799,14 +1580,14 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) state->AS_Data.f_LO2_Step, state->AS_Data.f_ref); /* - ** Check for any LO spurs in the output bandwidth and adjust - ** the LO settings to avoid them if needed + * Check for any LO spurs in the output bandwidth and adjust + * the LO settings to avoid them if needed */ status |= MT2063_AvoidSpurs(&state->AS_Data); /* - ** MT_AvoidSpurs spurs may have changed the LO1 & LO2 values. - ** Recalculate the LO frequencies and the values to be placed - ** in the tuning registers. + * MT_AvoidSpurs spurs may have changed the LO1 & LO2 values. + * Recalculate the LO frequencies and the values to be placed + * in the tuning registers. */ state->AS_Data.f_LO1 = MT2063_CalcLO1Mult(&LO1, &Num1, state->AS_Data.f_LO1, @@ -1819,7 +1600,7 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) state->AS_Data.f_LO2_Step, state->AS_Data.f_ref); /* - ** Check the upconverter and downconverter frequency ranges + * Check the upconverter and downconverter frequency ranges */ if ((state->AS_Data.f_LO1 < MT2063_MIN_UPC_FREQ) || (state->AS_Data.f_LO1 > MT2063_MAX_UPC_FREQ)) @@ -1832,19 +1613,19 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) LO2LK = 0x40; /* - ** If we have the same LO frequencies and we're already locked, - ** then skip re-programming the LO registers. + * If we have the same LO frequencies and we're already locked, + * then skip re-programming the LO registers. */ if ((ofLO1 != state->AS_Data.f_LO1) || (ofLO2 != state->AS_Data.f_LO2) || ((state->reg[MT2063_REG_LO_STATUS] & (LO1LK | LO2LK)) != (LO1LK | LO2LK))) { /* - ** Calculate the FIFFOF register value - ** - ** IF1_Actual - ** FIFFOF = ------------ - 8 * FIFFC - 4992 - ** f_ref/64 + * Calculate the FIFFOF register value + * + * IF1_Actual + * FIFFOF = ------------ - 8 * FIFFC - 4992 + * f_ref/64 */ fiffof = (state->AS_Data.f_LO1 - @@ -1854,8 +1635,8 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) fiffof = 0xFF; /* - ** Place all of the calculated values into the local tuner - ** register fields. + * Place all of the calculated values into the local tuner + * register fields. */ if (status >= 0) { state->reg[MT2063_REG_LO1CQ_1] = (u8) (LO1 & 0xFF); /* DIV1q */ @@ -1866,9 +1647,9 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) state->reg[MT2063_REG_LO2CQ_3] = (u8) (0xE0 | (Num2 & 0x000F)); /* NUM2q (lo) */ /* - ** Now write out the computed register values - ** IMPORTANT: There is a required order for writing - ** (0x05 must follow all the others). + * Now write out the computed register values + * IMPORTANT: There is a required order for writing + * (0x05 must follow all the others). */ status |= mt2063_write(state, MT2063_REG_LO1CQ_1, &state->reg[MT2063_REG_LO1CQ_1], 5); /* 0x01 - 0x05 */ if (state->tuner_id == MT2063_B0) { @@ -1890,7 +1671,7 @@ static u32 MT2063_Tune(struct mt2063_state *state, u32 f_in) } /* - ** Check for LO's locking + * Check for LO's locking */ if (status < 0) @@ -2173,7 +1954,7 @@ static int mt2063_get_status(struct dvb_frontend *fe, u32 *tuner_status) if (status < 0) return status; if (status) - *tuner_status = TUNER_STATUS_LOCKED; + *tuner_status = TUNER_STATUS_LOCKED; return 0; } @@ -2273,7 +2054,7 @@ static int mt2063_set_analog_params(struct dvb_frontend *fe, /* * As defined on EN 300 429, the DVB-C roll-off factor is 0.15. * So, the amount of the needed bandwith is given by: - * Bw = Symbol_rate * (1 + 0.15) + * Bw = Symbol_rate * (1 + 0.15) * As such, the maximum symbol rate supported by 6 MHz is given by: * max_symbol_rate = 6 MHz / 1.15 = 5217391 Bauds */ @@ -2346,7 +2127,7 @@ static int mt2063_set_params(struct dvb_frontend *fe, status = MT2063_Tune(state, (params->frequency + (pict2chanb_vsb + (ch_bw / 2)))); if (status < 0) - return status; + return status; state->frequency = params->frequency; return 0; @@ -2445,6 +2226,6 @@ EXPORT_SYMBOL_GPL(tuner_MT2063_ClearPowerMaskBits); MODULE_PARM_DESC(verbose, "Set Verbosity level"); -MODULE_AUTHOR("Henry"); +MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); MODULE_DESCRIPTION("MT2063 Silicon tuner"); MODULE_LICENSE("GPL"); |