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alistair23-linux/drivers/media/tuners/mt2063.c
Mauro Carvalho Chehab 20eb13a77e [media] mt2063: properly handle return error codes 
Fix a series of warnings when compiled with W=1:

drivers/media/tuners/mt2063.c: In function 'mt2063_setreg':
drivers/media/tuners/mt2063.c:290:2: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
...
drivers/media/tuners/mt2063.c:2013:2: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]

drivers/media/tuners/mt2063.c:2271:14: warning: no previous prototype for 'tuner_MT2063_SoftwareShutdown' [-Wmissing-prototypes]
drivers/media/tuners/mt2063.c:2286:14: warning: no previous prototype for 'tuner_MT2063_ClearPowerMaskBits' [-Wmissing-prototypes]

Several of those warnings are real bugs: the error status code
used to be unsigned, but they're assigned to negative error
codes.

Fix it by using unsigned int.

While here, comment the two power management functions, while we
don't add a code there to properly handle tuner suspend/resume.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-06 11:21:02 -03:00

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/*
* Driver for mt2063 Micronas tuner
*
* Copyright (c) 2011 Mauro Carvalho Chehab <mchehab@redhat.com>
*
* This driver came from a driver originally written by:
* Henry Wang <Henry.wang@AzureWave.com>
* Made publicly available by Terratec, at:
* http://linux.terratec.de/files/TERRATEC_H7/20110323_TERRATEC_H7_Linux.tar.gz
* The original driver's license is GPL, as declared with MODULE_LICENSE()
*
* 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>
#include <linux/string.h>
#include <linux/videodev2.h>
#include "mt2063.h"
static unsigned int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Set Verbosity level");
#define dprintk(level, fmt, arg...) do { \
if (debug >= level) \
printk(KERN_DEBUG "mt2063 %s: " fmt, __func__, ## arg); \
} while (0)
/* positive error codes used internally */
/* Info: Unavoidable LO-related spur may be present in the output */
#define MT2063_SPUR_PRESENT_ERR (0x00800000)
/* Info: Mask of bits used for # of LO-related spurs that were avoided during tuning */
#define MT2063_SPUR_CNT_MASK (0x001f0000)
#define MT2063_SPUR_SHIFT (16)
/* Info: Upconverter frequency is out of range (may be reason for MT_UPC_UNLOCK) */
#define MT2063_UPC_RANGE (0x04000000)
/* Info: Downconverter frequency is out of range (may be reason for MT_DPC_UNLOCK) */
#define MT2063_DNC_RANGE (0x08000000)
/*
* Constant defining the version of the following structure
* and therefore the API for this code.
*
* When compiling the tuner driver, the preprocessor will
* check against this version number to make sure that
* it matches the version that the tuner driver knows about.
*/
/* DECT Frequency Avoidance */
#define MT2063_DECT_AVOID_US_FREQS 0x00000001
#define MT2063_DECT_AVOID_EURO_FREQS 0x00000002
#define MT2063_EXCLUDE_US_DECT_FREQUENCIES(s) (((s) & MT2063_DECT_AVOID_US_FREQS) != 0)
#define MT2063_EXCLUDE_EURO_DECT_FREQUENCIES(s) (((s) & MT2063_DECT_AVOID_EURO_FREQS) != 0)
enum MT2063_DECT_Avoid_Type {
MT2063_NO_DECT_AVOIDANCE = 0, /* Do not create DECT exclusion zones. */
MT2063_AVOID_US_DECT = MT2063_DECT_AVOID_US_FREQS, /* Avoid US DECT frequencies. */
MT2063_AVOID_EURO_DECT = MT2063_DECT_AVOID_EURO_FREQS, /* Avoid European DECT frequencies. */
MT2063_AVOID_BOTH /* Avoid both regions. Not typically used. */
};
#define MT2063_MAX_ZONES 48
struct MT2063_ExclZone_t {
u32 min_;
u32 max_;
struct MT2063_ExclZone_t *next_;
};
/*
* Structure of data needed for Spur Avoidance
*/
struct MT2063_AvoidSpursData_t {
u32 f_ref;
u32 f_in;
u32 f_LO1;
u32 f_if1_Center;
u32 f_if1_Request;
u32 f_if1_bw;
u32 f_LO2;
u32 f_out;
u32 f_out_bw;
u32 f_LO1_Step;
u32 f_LO2_Step;
u32 f_LO1_FracN_Avoid;
u32 f_LO2_FracN_Avoid;
u32 f_zif_bw;
u32 f_min_LO_Separation;
u32 maxH1;
u32 maxH2;
enum MT2063_DECT_Avoid_Type avoidDECT;
u32 bSpurPresent;
u32 bSpurAvoided;
u32 nSpursFound;
u32 nZones;
struct MT2063_ExclZone_t *freeZones;
struct MT2063_ExclZone_t *usedZones;
struct MT2063_ExclZone_t MT2063_ExclZones[MT2063_MAX_ZONES];
};
/*
* 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 */
MT2063_SRO_SD = 0x0020, /* Shutdown SRO */
MT2063_AFC_SD = 0x0010, /* Shutdown AFC A/D */
MT2063_PD_SD = 0x0002, /* Enable power detector shutdown */
MT2063_PDADC_SD = 0x0001, /* Enable power detector A/D shutdown */
MT2063_VCO_SD = 0x8000, /* Enable VCO shutdown */
MT2063_LTX_SD = 0x4000, /* Enable LTX shutdown */
MT2063_LT1_SD = 0x2000, /* Enable LT1 shutdown */
MT2063_LNA_SD = 0x1000, /* Enable LNA shutdown */
MT2063_UPC_SD = 0x0800, /* Enable upconverter shutdown */
MT2063_DNC_SD = 0x0400, /* Enable downconverter shutdown */
MT2063_VGA_SD = 0x0200, /* Enable VGA shutdown */
MT2063_AMP_SD = 0x0100, /* Enable AMP shutdown */
MT2063_ALL_SD = 0xFF73, /* All shutdown bits for this tuner */
MT2063_NONE_SD = 0x0000 /* No shutdown bits */
};
/*
* Possible values for MT2063_DNC_OUTPUT
*/
enum MT2063_DNC_Output_Enable {
MT2063_DNC_NONE = 0,
MT2063_DNC_1,
MT2063_DNC_2,
MT2063_DNC_BOTH
};
/*
* 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 */
MT2063_REG_LO1CQ_2, /* 0x02: LO1C Queued Byte 2 */
MT2063_REG_LO2CQ_1, /* 0x03: LO2C Queued Byte 1 */
MT2063_REG_LO2CQ_2, /* 0x04: LO2C Queued Byte 2 */
MT2063_REG_LO2CQ_3, /* 0x05: LO2C Queued Byte 3 */
MT2063_REG_RSVD_06, /* 0x06: Reserved */
MT2063_REG_LO_STATUS, /* 0x07: LO Status */
MT2063_REG_FIFFC, /* 0x08: FIFF Center */
MT2063_REG_CLEARTUNE, /* 0x09: ClearTune Filter */
MT2063_REG_ADC_OUT, /* 0x0A: ADC_OUT */
MT2063_REG_LO1C_1, /* 0x0B: LO1C Byte 1 */
MT2063_REG_LO1C_2, /* 0x0C: LO1C Byte 2 */
MT2063_REG_LO2C_1, /* 0x0D: LO2C Byte 1 */
MT2063_REG_LO2C_2, /* 0x0E: LO2C Byte 2 */
MT2063_REG_LO2C_3, /* 0x0F: LO2C Byte 3 */
MT2063_REG_RSVD_10, /* 0x10: Reserved */
MT2063_REG_PWR_1, /* 0x11: PWR Byte 1 */
MT2063_REG_PWR_2, /* 0x12: PWR Byte 2 */
MT2063_REG_TEMP_STATUS, /* 0x13: Temp Status */
MT2063_REG_XO_STATUS, /* 0x14: Crystal Status */
MT2063_REG_RF_STATUS, /* 0x15: RF Attn Status */
MT2063_REG_FIF_STATUS, /* 0x16: FIF Attn Status */
MT2063_REG_LNA_OV, /* 0x17: LNA Attn Override */
MT2063_REG_RF_OV, /* 0x18: RF Attn Override */
MT2063_REG_FIF_OV, /* 0x19: FIF Attn Override */
MT2063_REG_LNA_TGT, /* 0x1A: Reserved */
MT2063_REG_PD1_TGT, /* 0x1B: Pwr Det 1 Target */
MT2063_REG_PD2_TGT, /* 0x1C: Pwr Det 2 Target */
MT2063_REG_RSVD_1D, /* 0x1D: Reserved */
MT2063_REG_RSVD_1E, /* 0x1E: Reserved */
MT2063_REG_RSVD_1F, /* 0x1F: Reserved */
MT2063_REG_RSVD_20, /* 0x20: Reserved */
MT2063_REG_BYP_CTRL, /* 0x21: Bypass Control */
MT2063_REG_RSVD_22, /* 0x22: Reserved */
MT2063_REG_RSVD_23, /* 0x23: Reserved */
MT2063_REG_RSVD_24, /* 0x24: Reserved */
MT2063_REG_RSVD_25, /* 0x25: Reserved */
MT2063_REG_RSVD_26, /* 0x26: Reserved */
MT2063_REG_RSVD_27, /* 0x27: Reserved */
MT2063_REG_FIFF_CTRL, /* 0x28: FIFF Control */
MT2063_REG_FIFF_OFFSET, /* 0x29: FIFF Offset */
MT2063_REG_CTUNE_CTRL, /* 0x2A: Reserved */
MT2063_REG_CTUNE_OV, /* 0x2B: Reserved */
MT2063_REG_CTRL_2C, /* 0x2C: Reserved */
MT2063_REG_FIFF_CTRL2, /* 0x2D: Fiff Control */
MT2063_REG_RSVD_2E, /* 0x2E: Reserved */
MT2063_REG_DNC_GAIN, /* 0x2F: DNC Control */
MT2063_REG_VGA_GAIN, /* 0x30: VGA Gain Ctrl */
MT2063_REG_RSVD_31, /* 0x31: Reserved */
MT2063_REG_TEMP_SEL, /* 0x32: Temperature Selection */
MT2063_REG_RSVD_33, /* 0x33: Reserved */
MT2063_REG_RSVD_34, /* 0x34: Reserved */
MT2063_REG_RSVD_35, /* 0x35: Reserved */
MT2063_REG_RSVD_36, /* 0x36: Reserved */
MT2063_REG_RSVD_37, /* 0x37: Reserved */
MT2063_REG_RSVD_38, /* 0x38: Reserved */
MT2063_REG_RSVD_39, /* 0x39: Reserved */
MT2063_REG_RSVD_3A, /* 0x3A: Reserved */
MT2063_REG_RSVD_3B, /* 0x3B: Reserved */
MT2063_REG_RSVD_3C, /* 0x3C: Reserved */
MT2063_REG_END_REGS
};
struct mt2063_state {
struct i2c_adapter *i2c;
bool init;
const struct mt2063_config *config;
struct dvb_tuner_ops ops;
struct dvb_frontend *frontend;
struct tuner_state status;
u32 frequency;
u32 srate;
u32 bandwidth;
u32 reference;
u32 tuner_id;
struct MT2063_AvoidSpursData_t AS_Data;
u32 f_IF1_actual;
u32 rcvr_mode;
u32 ctfilt_sw;
u32 CTFiltMax[31];
u32 num_regs;
u8 reg[MT2063_REG_END_REGS];
};
/*
* mt2063_write - Write data into the I2C bus
*/
static int mt2063_write(struct mt2063_state *state, u8 reg, u8 *data, u32 len)
{
struct dvb_frontend *fe = state->frontend;
int ret;
u8 buf[60];
struct i2c_msg msg = {
.addr = state->config->tuner_address,
.flags = 0,
.buf = buf,
.len = len + 1
};
dprintk(2, "\n");
msg.buf[0] = reg;
memcpy(msg.buf + 1, data, len);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
ret = i2c_transfer(state->i2c, &msg, 1);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
if (ret < 0)
printk(KERN_ERR "%s error ret=%d\n", __func__, ret);
return ret;
}
/*
* mt2063_write - Write register data into the I2C bus, caching the value
*/
static int mt2063_setreg(struct mt2063_state *state, u8 reg, u8 val)
{
int status;
dprintk(2, "\n");
if (reg >= MT2063_REG_END_REGS)
return -ERANGE;
status = mt2063_write(state, reg, &val, 1);
if (status < 0)
return status;
state->reg[reg] = val;
return 0;
}
/*
* mt2063_read - Read data from the I2C bus
*/
static int mt2063_read(struct mt2063_state *state,
u8 subAddress, u8 *pData, u32 cnt)
{
int status = 0; /* Status to be returned */
struct dvb_frontend *fe = state->frontend;
u32 i = 0;
dprintk(2, "addr 0x%02x, cnt %d\n", subAddress, cnt);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
for (i = 0; i < cnt; i++) {
u8 b0[] = { subAddress + i };
struct i2c_msg msg[] = {
{
.addr = state->config->tuner_address,
.flags = 0,
.buf = b0,
.len = 1
}, {
.addr = state->config->tuner_address,
.flags = I2C_M_RD,
.buf = pData + i,
.len = 1
}
};
status = i2c_transfer(state->i2c, msg, 2);
dprintk(2, "addr 0x%02x, ret = %d, val = 0x%02x\n",
subAddress + i, status, *(pData + i));
if (status < 0)
break;
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
if (status < 0)
printk(KERN_ERR "Can't read from address 0x%02x,\n",
subAddress + i);
return status;
}
/*
* FIXME: Is this really needed?
*/
static int MT2063_Sleep(struct dvb_frontend *fe)
{
/*
* ToDo: Add code here to implement a OS blocking
*/
msleep(100);
return 0;
}
/*
* Microtune spur avoidance
*/
/* Implement ceiling, floor functions. */
#define ceil(n, d) (((n) < 0) ? (-((-(n))/(d))) : (n)/(d) + ((n)%(d) != 0))
#define floor(n, d) (((n) < 0) ? (-((-(n))/(d))) - ((n)%(d) != 0) : (n)/(d))
struct MT2063_FIFZone_t {
s32 min_;
s32 max_;
};
static struct MT2063_ExclZone_t *InsertNode(struct MT2063_AvoidSpursData_t
*pAS_Info,
struct MT2063_ExclZone_t *pPrevNode)
{
struct MT2063_ExclZone_t *pNode;
dprintk(2, "\n");
/* Check for a node in the free list */
if (pAS_Info->freeZones != NULL) {
/* Use one from the free list */
pNode = pAS_Info->freeZones;
pAS_Info->freeZones = pNode->next_;
} else {
/* Grab a node from the array */
pNode = &pAS_Info->MT2063_ExclZones[pAS_Info->nZones];
}
if (pPrevNode != NULL) {
pNode->next_ = pPrevNode->next_;
pPrevNode->next_ = pNode;
} else { /* insert at the beginning of the list */
pNode->next_ = pAS_Info->usedZones;
pAS_Info->usedZones = pNode;
}
pAS_Info->nZones++;
return pNode;
}
static struct MT2063_ExclZone_t *RemoveNode(struct MT2063_AvoidSpursData_t
*pAS_Info,
struct MT2063_ExclZone_t *pPrevNode,
struct MT2063_ExclZone_t
*pNodeToRemove)
{
struct MT2063_ExclZone_t *pNext = pNodeToRemove->next_;
dprintk(2, "\n");
/* Make previous node point to the subsequent node */
if (pPrevNode != NULL)
pPrevNode->next_ = pNext;
/* Add pNodeToRemove to the beginning of the freeZones */
pNodeToRemove->next_ = pAS_Info->freeZones;
pAS_Info->freeZones = pNodeToRemove;
/* Decrement node count */
pAS_Info->nZones--;
return pNext;
}
/*
* 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)
{
struct MT2063_ExclZone_t *pNode = pAS_Info->usedZones;
struct MT2063_ExclZone_t *pPrev = NULL;
struct MT2063_ExclZone_t *pNext = NULL;
dprintk(2, "\n");
/* Check to see if this overlaps the 1st IF filter */
if ((f_max > (pAS_Info->f_if1_Center - (pAS_Info->f_if1_bw / 2)))
&& (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: |--| |--| |--| |---| |-| |--|
*/
/* Check for our place in the list */
while ((pNode != NULL) && (pNode->max_ < f_min)) {
pPrev = pNode;
pNode = pNode->next_;
}
if ((pNode != NULL) && (pNode->min_ < f_max)) {
/* Combine me with pNode */
if (f_min < pNode->min_)
pNode->min_ = f_min;
if (f_max > pNode->max_)
pNode->max_ = f_max;
} else {
pNode = InsertNode(pAS_Info, pPrev);
pNode->min_ = f_min;
pNode->max_ = f_max;
}
/* Look for merging possibilities */
pNext = pNode->next_;
while ((pNext != NULL) && (pNext->min_ < pNode->max_)) {
if (pNext->max_ > pNode->max_)
pNode->max_ = pNext->max_;
/* 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
*/
static void MT2063_ResetExclZones(struct MT2063_AvoidSpursData_t *pAS_Info)
{
u32 center;
dprintk(2, "\n");
pAS_Info->nZones = 0; /* this clears the used list */
pAS_Info->usedZones = NULL; /* reset ptr */
pAS_Info->freeZones = NULL; /* reset ptr */
center =
pAS_Info->f_ref *
((pAS_Info->f_if1_Center - pAS_Info->f_if1_bw / 2 +
pAS_Info->f_in) / pAS_Info->f_ref) - pAS_Info->f_in;
while (center <
pAS_Info->f_if1_Center + pAS_Info->f_if1_bw / 2 +
pAS_Info->f_LO1_FracN_Avoid) {
/* Exclude LO1 FracN */
MT2063_AddExclZone(pAS_Info,
center - pAS_Info->f_LO1_FracN_Avoid,
center - 1);
MT2063_AddExclZone(pAS_Info, center + 1,
center + pAS_Info->f_LO1_FracN_Avoid);
center += pAS_Info->f_ref;
}
center =
pAS_Info->f_ref *
((pAS_Info->f_if1_Center - pAS_Info->f_if1_bw / 2 -
pAS_Info->f_out) / pAS_Info->f_ref) + pAS_Info->f_out;
while (center <
pAS_Info->f_if1_Center + pAS_Info->f_if1_bw / 2 +
pAS_Info->f_LO2_FracN_Avoid) {
/* Exclude LO2 FracN */
MT2063_AddExclZone(pAS_Info,
center - pAS_Info->f_LO2_FracN_Avoid,
center - 1);
MT2063_AddExclZone(pAS_Info, center + 1,
center + pAS_Info->f_LO2_FracN_Avoid);
center += pAS_Info->f_ref;
}
if (MT2063_EXCLUDE_US_DECT_FREQUENCIES(pAS_Info->avoidDECT)) {
/* Exclude LO1 values that conflict with DECT channels */
MT2063_AddExclZone(pAS_Info, 1920836000 - pAS_Info->f_in, 1922236000 - pAS_Info->f_in); /* Ctr = 1921.536 */
MT2063_AddExclZone(pAS_Info, 1922564000 - pAS_Info->f_in, 1923964000 - pAS_Info->f_in); /* Ctr = 1923.264 */
MT2063_AddExclZone(pAS_Info, 1924292000 - pAS_Info->f_in, 1925692000 - pAS_Info->f_in); /* Ctr = 1924.992 */
MT2063_AddExclZone(pAS_Info, 1926020000 - pAS_Info->f_in, 1927420000 - pAS_Info->f_in); /* Ctr = 1926.720 */
MT2063_AddExclZone(pAS_Info, 1927748000 - pAS_Info->f_in, 1929148000 - pAS_Info->f_in); /* Ctr = 1928.448 */
}
if (MT2063_EXCLUDE_EURO_DECT_FREQUENCIES(pAS_Info->avoidDECT)) {
MT2063_AddExclZone(pAS_Info, 1896644000 - pAS_Info->f_in, 1898044000 - pAS_Info->f_in); /* Ctr = 1897.344 */
MT2063_AddExclZone(pAS_Info, 1894916000 - pAS_Info->f_in, 1896316000 - pAS_Info->f_in); /* Ctr = 1895.616 */
MT2063_AddExclZone(pAS_Info, 1893188000 - pAS_Info->f_in, 1894588000 - pAS_Info->f_in); /* Ctr = 1893.888 */
MT2063_AddExclZone(pAS_Info, 1891460000 - pAS_Info->f_in, 1892860000 - pAS_Info->f_in); /* Ctr = 1892.16 */
MT2063_AddExclZone(pAS_Info, 1889732000 - pAS_Info->f_in, 1891132000 - pAS_Info->f_in); /* Ctr = 1890.432 */
MT2063_AddExclZone(pAS_Info, 1888004000 - pAS_Info->f_in, 1889404000 - pAS_Info->f_in); /* Ctr = 1888.704 */
MT2063_AddExclZone(pAS_Info, 1886276000 - pAS_Info->f_in, 1887676000 - pAS_Info->f_in); /* Ctr = 1886.976 */
MT2063_AddExclZone(pAS_Info, 1884548000 - pAS_Info->f_in, 1885948000 - pAS_Info->f_in); /* Ctr = 1885.248 */
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 */
}
}
/*
* 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.
*/
const u32 f_Desired =
pAS_Info->f_LO1_Step *
((pAS_Info->f_if1_Request + pAS_Info->f_in +
pAS_Info->f_LO1_Step / 2) / pAS_Info->f_LO1_Step) -
pAS_Info->f_in;
const u32 f_Step =
(pAS_Info->f_LO1_Step >
pAS_Info->f_LO2_Step) ? pAS_Info->f_LO1_Step : pAS_Info->
f_LO2_Step;
u32 f_Center;
s32 i;
s32 j = 0;
u32 bDesiredExcluded = 0;
u32 bZeroExcluded = 0;
s32 tmpMin, tmpMax;
s32 bestDiff;
struct MT2063_ExclZone_t *pNode = pAS_Info->usedZones;
struct MT2063_FIFZone_t zones[MT2063_MAX_ZONES];
dprintk(2, "\n");
if (pAS_Info->nZones == 0)
return 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 +
f_Step *
((pAS_Info->f_if1_Center - f_Desired +
f_Step / 2) / f_Step);
else
f_Center =
f_Desired -
f_Step *
((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
*/
while (pNode != NULL) {
/* floor function */
tmpMin =
floor((s32) (pNode->min_ - f_Center), (s32) f_Step);
/* ceil function */
tmpMax =
ceil((s32) (pNode->max_ - f_Center), (s32) f_Step);
if ((pNode->min_ < f_Desired) && (pNode->max_ > f_Desired))
bDesiredExcluded = 1;
if ((tmpMin < 0) && (tmpMax > 0))
bZeroExcluded = 1;
/* See if this zone overlaps the previous */
if ((j > 0) && (tmpMin < zones[j - 1].max_))
zones[j - 1].max_ = tmpMax;
else {
/* Add new zone */
zones[j].min_ = tmpMin;
zones[j].max_ = tmpMax;
j++;
}
pNode = pNode->next_;
}
/*
* 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 (bZeroExcluded == 0)
return f_Center;
/* Find the value closest to 0 (f_Center) */
bestDiff = zones[0].min_;
for (i = 0; i < j; i++) {
if (abs(zones[i].min_) < abs(bestDiff))
bestDiff = zones[i].min_;
if (abs(zones[i].max_) < abs(bestDiff))
bestDiff = zones[i].max_;
}
if (bestDiff < 0)
return f_Center - ((u32) (-bestDiff) * f_Step);
return f_Center + (bestDiff * f_Step);
}
/**
* 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;
while (v != 0) {
r = u % v;
u = v;
v = r;
}
return u;
}
/**
* 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)
{
/*
** Calculate LO frequency settings.
*/
u32 n, n0;
const u32 f_LO1 = pAS_Info->f_LO1;
const u32 f_LO2 = pAS_Info->f_LO2;
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 / (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;
dprintk(2, "\n");
*fm = 0;
/*
** For each edge (d, c & f), calculate a scale, based on the gcd
** of f_LO1, f_LO2 and the edge value. Use the larger of this
** gcd-based scale factor or f_Scale.
*/
lo_gcd = MT2063_gcd(f_LO1, f_LO2);
gd_Scale = max((u32) MT2063_gcd(lo_gcd, d), f_Scale);
hgds = gd_Scale / 2;
gc_Scale = max((u32) MT2063_gcd(lo_gcd, c), f_Scale);
hgcs = gc_Scale / 2;
gf_Scale = max((u32) MT2063_gcd(lo_gcd, f), f_Scale);
hgfs = gf_Scale / 2;
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) {
md = (n * ((f_LO1 + hgds) / gd_Scale) -
((d + hgds) / gd_Scale)) / ((f_LO2 + hgds) / gd_Scale);
/* If # fLO2 harmonics > m_maxLOSpurHarmonic, then no spurs present */
if (md >= pAS_Info->maxH1)
break;
ma = (n * ((f_LO1 + hgds) / gd_Scale) +
((d + hgds) / gd_Scale)) / ((f_LO2 + hgds) / gd_Scale);
/* If no spurs between +/- (f_out + f_IFBW/2), then try next harmonic */
if (md == ma)
continue;
mc = (n * ((f_LO1 + hgcs) / gc_Scale) -
((c + hgcs) / gc_Scale)) / ((f_LO2 + hgcs) / gc_Scale);
if (mc != md) {
f_nsLO1 = (s32) (n * (f_LO1 / gc_Scale));
f_nsLO2 = (s32) (mc * (f_LO2 / gc_Scale));
f_Spur =
(gc_Scale * (f_nsLO1 - f_nsLO2)) +
n * (f_LO1 % gc_Scale) - mc * (f_LO2 % gc_Scale);
*fp = ((f_Spur - (s32) c) / (mc - n)) + 1;
*fm = (((s32) d - f_Spur) / (mc - n)) + 1;
return 1;
}
/* Location of Zero-IF-spur to be checked */
me = (n * ((f_LO1 + hgfs) / gf_Scale) +
((f + hgfs) / gf_Scale)) / ((f_LO2 + hgfs) / gf_Scale);
mf = (n * ((f_LO1 + hgfs) / gf_Scale) -
((f + hgfs) / gf_Scale)) / ((f_LO2 + hgfs) / gf_Scale);
if (me != mf) {
f_nsLO1 = n * (f_LO1 / gf_Scale);
f_nsLO2 = me * (f_LO2 / gf_Scale);
f_Spur =
(gf_Scale * (f_nsLO1 - f_nsLO2)) +
n * (f_LO1 % gf_Scale) - me * (f_LO2 % gf_Scale);
*fp = ((f_Spur + (s32) f) / (me - n)) + 1;
*fm = (((s32) f - f_Spur) / (me - n)) + 1;
return 1;
}
mb = (n * ((f_LO1 + hgcs) / gc_Scale) +
((c + hgcs) / gc_Scale)) / ((f_LO2 + hgcs) / gc_Scale);
if (ma != mb) {
f_nsLO1 = n * (f_LO1 / gc_Scale);
f_nsLO2 = ma * (f_LO2 / gc_Scale);
f_Spur =
(gc_Scale * (f_nsLO1 - f_nsLO2)) +
n * (f_LO1 % gc_Scale) - ma * (f_LO2 % gc_Scale);
*fp = (((s32) d + f_Spur) / (ma - n)) + 1;
*fm = (-(f_Spur + (s32) c) / (ma - n)) + 1;
return 1;
}
}
/* No spurs found */
return 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)
{
int status = 0;
u32 fm, fp; /* restricted range on LO's */
pAS_Info->bSpurAvoided = 0;
pAS_Info->nSpursFound = 0;
dprintk(2, "\n");
if (pAS_Info->maxH1 == 0)
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.
*/
pAS_Info->bSpurPresent = IsSpurInBand(pAS_Info, &fm, &fp);
if (pAS_Info->bSpurPresent) {
u32 zfIF1 = pAS_Info->f_LO1 - pAS_Info->f_in; /* current attempt at a 1st IF */
u32 zfLO1 = pAS_Info->f_LO1; /* current attempt at an LO1 freq */
u32 zfLO2 = pAS_Info->f_LO2; /* current attempt at an LO2 freq */
u32 delta_IF1;
u32 new_IF1;
/*
** Spur was found, attempt to find a spur-free 1st IF
*/
do {
pAS_Info->nSpursFound++;
/* Raise f_IF1_upper, if needed */
MT2063_AddExclZone(pAS_Info, zfIF1 - fm, zfIF1 + fp);
/* Choose next IF1 that is closest to f_IF1_CENTER */
new_IF1 = MT2063_ChooseFirstIF(pAS_Info);
if (new_IF1 > zfIF1) {
pAS_Info->f_LO1 += (new_IF1 - zfIF1);
pAS_Info->f_LO2 += (new_IF1 - zfIF1);
} else {
pAS_Info->f_LO1 -= (zfIF1 - new_IF1);
pAS_Info->f_LO2 -= (zfIF1 - new_IF1);
}
zfIF1 = new_IF1;
if (zfIF1 > pAS_Info->f_if1_Center)
delta_IF1 = zfIF1 - pAS_Info->f_if1_Center;
else
delta_IF1 = pAS_Info->f_if1_Center - zfIF1;
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)
*/
} 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.
*/
if (pAS_Info->bSpurPresent == 1) {
status |= MT2063_SPUR_PRESENT_ERR;
pAS_Info->f_LO1 = zfLO1;
pAS_Info->f_LO2 = zfLO2;
} else
pAS_Info->bSpurAvoided = 1;
}
status |=
((pAS_Info->
nSpursFound << MT2063_SPUR_SHIFT) & MT2063_SPUR_CNT_MASK);
return status;
}
/*
* Constants used by the tuning algorithm
*/
#define MT2063_REF_FREQ (16000000UL) /* Reference oscillator Frequency (in Hz) */
#define MT2063_IF1_BW (22000000UL) /* The IF1 filter bandwidth (in Hz) */
#define MT2063_TUNE_STEP_SIZE (50000UL) /* Tune in steps of 50 kHz */
#define MT2063_SPUR_STEP_HZ (250000UL) /* Step size (in Hz) to move IF1 when avoiding spurs */
#define MT2063_ZIF_BW (2000000UL) /* Zero-IF spur-free bandwidth (in Hz) */
#define MT2063_MAX_HARMONICS_1 (15UL) /* Highest intra-tuner LO Spur Harmonic to be avoided */
#define MT2063_MAX_HARMONICS_2 (5UL) /* Highest inter-tuner LO Spur Harmonic to be avoided */
#define MT2063_MIN_LO_SEP (1000000UL) /* Minimum inter-tuner LO frequency separation */
#define MT2063_LO1_FRACN_AVOID (0UL) /* LO1 FracN numerator avoid region (in Hz) */
#define MT2063_LO2_FRACN_AVOID (199999UL) /* LO2 FracN numerator avoid region (in Hz) */
#define MT2063_MIN_FIN_FREQ (44000000UL) /* Minimum input frequency (in Hz) */
#define MT2063_MAX_FIN_FREQ (1100000000UL) /* Maximum input frequency (in Hz) */
#define MT2063_MIN_FOUT_FREQ (36000000UL) /* Minimum output frequency (in Hz) */
#define MT2063_MAX_FOUT_FREQ (57000000UL) /* Maximum output frequency (in Hz) */
#define MT2063_MIN_DNC_FREQ (1293000000UL) /* Minimum LO2 frequency (in Hz) */
#define MT2063_MAX_DNC_FREQ (1614000000UL) /* Maximum LO2 frequency (in Hz) */
#define MT2063_MIN_UPC_FREQ (1396000000UL) /* Minimum LO1 frequency (in Hz) */
#define MT2063_MAX_UPC_FREQ (2750000000UL) /* Maximum LO1 frequency (in Hz) */
/*
* 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)
/**
* mt2063_lockStatus - Checks to see if LO1 and LO2 are locked
*
* @state: struct mt2063_state pointer
*
* This function returns 0, if no lock, 1 if locked and a value < 1 if error
*/
static int mt2063_lockStatus(struct mt2063_state *state)
{
const u32 nMaxWait = 100; /* wait a maximum of 100 msec */
const u32 nPollRate = 2; /* poll status bits every 2 ms */
const u32 nMaxLoops = nMaxWait / nPollRate;
const u8 LO1LK = 0x80;
u8 LO2LK = 0x08;
int status;
u32 nDelays = 0;
dprintk(2, "\n");
/* LO2 Lock bit was in a different place for B0 version */
if (state->tuner_id == MT2063_B0)
LO2LK = 0x40;
do {
status = mt2063_read(state, MT2063_REG_LO_STATUS,
&state->reg[MT2063_REG_LO_STATUS], 1);
if (status < 0)
return status;
if ((state->reg[MT2063_REG_LO_STATUS] & (LO1LK | LO2LK)) ==
(LO1LK | LO2LK)) {
return TUNER_STATUS_LOCKED | TUNER_STATUS_STEREO;
}
msleep(nPollRate); /* Wait between retries */
} while (++nDelays < nMaxLoops);
/*
* Got no lock or partial lock
*/
return 0;
}
/*
* Constants for setting receiver modes.
* (6 modes defined at this time, enumerated by mt2063_delivery_sys)
* (DNC1GC & DNC2GC are the values, which are used, when the specific
* DNC Output is selected, the other is always off)
*
* enum mt2063_delivery_sys
* -------------+----------------------------------------------
* 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 -------------->|
* 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
*/
enum mt2063_delivery_sys {
MT2063_CABLE_QAM = 0,
MT2063_CABLE_ANALOG,
MT2063_OFFAIR_COFDM,
MT2063_OFFAIR_COFDM_SAWLESS,
MT2063_OFFAIR_ANALOG,
MT2063_OFFAIR_8VSB,
MT2063_NUM_RCVR_MODES
};
static const char *mt2063_mode_name[] = {
[MT2063_CABLE_QAM] = "digital cable",
[MT2063_CABLE_ANALOG] = "analog cable",
[MT2063_OFFAIR_COFDM] = "digital offair",
[MT2063_OFFAIR_COFDM_SAWLESS] = "digital offair without SAW",
[MT2063_OFFAIR_ANALOG] = "analog offair",
[MT2063_OFFAIR_8VSB] = "analog 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 };
static const u8 FIFFQ[] = { 0, 0, 0, 0, 0, 0 };
static const u8 DNC1GC[] = { 0, 0, 0, 0, 0, 0 };
static const u8 DNC2GC[] = { 0, 0, 0, 0, 0, 0 };
static const u8 ACLNAMAX[] = { 31, 31, 31, 31, 31, 31 };
static const u8 LNATGT[] = { 44, 43, 43, 43, 43, 43 };
static const u8 RFOVDIS[] = { 0, 0, 0, 0, 0, 0 };
static const u8 ACRFMAX[] = { 31, 31, 31, 31, 31, 31 };
static const u8 PD1TGT[] = { 36, 36, 38, 38, 36, 38 };
static const u8 FIFOVDIS[] = { 0, 0, 0, 0, 0, 0 };
static const u8 ACFIFMAX[] = { 29, 29, 29, 29, 29, 29 };
static const u8 PD2TGT[] = { 40, 33, 38, 42, 30, 38 };
/*
* mt2063_set_dnc_output_enable()
*/
static u32 mt2063_get_dnc_output_enable(struct mt2063_state *state,
enum MT2063_DNC_Output_Enable *pValue)
{
dprintk(2, "\n");
if ((state->reg[MT2063_REG_DNC_GAIN] & 0x03) == 0x03) { /* if DNC1 is off */
if ((state->reg[MT2063_REG_VGA_GAIN] & 0x03) == 0x03) /* if DNC2 is off */
*pValue = MT2063_DNC_NONE;
else
*pValue = MT2063_DNC_2;
} else { /* DNC1 is on */
if ((state->reg[MT2063_REG_VGA_GAIN] & 0x03) == 0x03) /* if DNC2 is off */
*pValue = MT2063_DNC_1;
else
*pValue = MT2063_DNC_BOTH;
}
return 0;
}
/*
* mt2063_set_dnc_output_enable()
*/
static u32 mt2063_set_dnc_output_enable(struct mt2063_state *state,
enum MT2063_DNC_Output_Enable nValue)
{
int status = 0; /* Status to be returned */
u8 val = 0;
dprintk(2, "\n");
/* 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_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);
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_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);
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_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);
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_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);
break;
default:
break;
}
return status;
}
/*
* MT2063_SetReceiverMode() - Set the MT2063 receiver mode, according with
* the selected enum mt2063_delivery_sys type.
*
* (DNC1GC & DNC2GC are the values, which are used, when the specific
* DNC Output is selected, the other is always off)
*
* @state: ptr to mt2063_state structure
* @Mode: desired reciever delivery system
*
* Note: Register cache must be valid for it to work
*/
static u32 MT2063_SetReceiverMode(struct mt2063_state *state,
enum mt2063_delivery_sys Mode)
{
int status = 0; /* Status to be returned */
u8 val;
u32 longval;
dprintk(2, "\n");
if (Mode >= MT2063_NUM_RCVR_MODES)
status = -ERANGE;
/* RFAGCen */
if (status >= 0) {
val =
(state->
reg[MT2063_REG_PD1_TGT] & (u8) ~0x40) | (RFAGCEN[Mode]
? 0x40 :
0x00);
if (state->reg[MT2063_REG_PD1_TGT] != val)
status |= mt2063_setreg(state, MT2063_REG_PD1_TGT, val);
}
/* LNARin */
if (status >= 0) {
u8 val = (state->reg[MT2063_REG_CTRL_2C] & (u8) ~0x03) |
(LNARIN[Mode] & 0x03);
if (state->reg[MT2063_REG_CTRL_2C] != val)
status |= mt2063_setreg(state, MT2063_REG_CTRL_2C, val);
}
/* FIFFQEN and FIFFQ */
if (status >= 0) {
val =
(state->
reg[MT2063_REG_FIFF_CTRL2] & (u8) ~0xF0) |
(FIFFQEN[Mode] << 7) | (FIFFQ[Mode] << 4);
if (state->reg[MT2063_REG_FIFF_CTRL2] != val) {
status |=
mt2063_setreg(state, MT2063_REG_FIFF_CTRL2, val);
/* trigger FIFF calibration, needed after changing FIFFQ */
val =
(state->reg[MT2063_REG_FIFF_CTRL] | (u8) 0x01);
status |=
mt2063_setreg(state, MT2063_REG_FIFF_CTRL, val);
val =
(state->
reg[MT2063_REG_FIFF_CTRL] & (u8) ~0x01);
status |=
mt2063_setreg(state, MT2063_REG_FIFF_CTRL, val);
}
}
/* DNC1GC & DNC2GC */
status |= mt2063_get_dnc_output_enable(state, &longval);
status |= mt2063_set_dnc_output_enable(state, longval);
/* acLNAmax */
if (status >= 0) {
u8 val = (state->reg[MT2063_REG_LNA_OV] & (u8) ~0x1F) |
(ACLNAMAX[Mode] & 0x1F);
if (state->reg[MT2063_REG_LNA_OV] != val)
status |= mt2063_setreg(state, MT2063_REG_LNA_OV, val);
}
/* LNATGT */
if (status >= 0) {
u8 val = (state->reg[MT2063_REG_LNA_TGT] & (u8) ~0x3F) |
(LNATGT[Mode] & 0x3F);
if (state->reg[MT2063_REG_LNA_TGT] != val)
status |= mt2063_setreg(state, MT2063_REG_LNA_TGT, val);
}
/* ACRF */
if (status >= 0) {
u8 val = (state->reg[MT2063_REG_RF_OV] & (u8) ~0x1F) |
(ACRFMAX[Mode] & 0x1F);
if (state->reg[MT2063_REG_RF_OV] != val)
status |= mt2063_setreg(state, MT2063_REG_RF_OV, val);
}
/* PD1TGT */
if (status >= 0) {
u8 val = (state->reg[MT2063_REG_PD1_TGT] & (u8) ~0x3F) |
(PD1TGT[Mode] & 0x3F);
if (state->reg[MT2063_REG_PD1_TGT] != val)
status |= mt2063_setreg(state, MT2063_REG_PD1_TGT, val);
}
/* FIFATN */
if (status >= 0) {
u8 val = ACFIFMAX[Mode];
if (state->reg[MT2063_REG_PART_REV] != MT2063_B3 && val > 5)
val = 5;
val = (state->reg[MT2063_REG_FIF_OV] & (u8) ~0x1F) |
(val & 0x1F);
if (state->reg[MT2063_REG_FIF_OV] != val)
status |= mt2063_setreg(state, MT2063_REG_FIF_OV, val);
}
/* PD2TGT */
if (status >= 0) {
u8 val = (state->reg[MT2063_REG_PD2_TGT] & (u8) ~0x3F) |
(PD2TGT[Mode] & 0x3F);
if (state->reg[MT2063_REG_PD2_TGT] != val)
status |= mt2063_setreg(state, MT2063_REG_PD2_TGT, val);
}
/* Ignore ATN Overload */
if (status >= 0) {
val = (state->reg[MT2063_REG_LNA_TGT] & (u8) ~0x80) |
(RFOVDIS[Mode] ? 0x80 : 0x00);
if (state->reg[MT2063_REG_LNA_TGT] != val)
status |= mt2063_setreg(state, MT2063_REG_LNA_TGT, val);
}
/* Ignore FIF Overload */
if (status >= 0) {
val = (state->reg[MT2063_REG_PD1_TGT] & (u8) ~0x80) |
(FIFOVDIS[Mode] ? 0x80 : 0x00);
if (state->reg[MT2063_REG_PD1_TGT] != val)
status |= mt2063_setreg(state, MT2063_REG_PD1_TGT, val);
}
if (status >= 0) {
state->rcvr_mode = Mode;
dprintk(1, "mt2063 mode changed to %s\n",
mt2063_mode_name[state->rcvr_mode]);
}
return status;
}
/*
* 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)
{
int status = 0;
dprintk(2, "\n");
Bits = (enum MT2063_Mask_Bits)(Bits & MT2063_ALL_SD); /* Only valid bits for this tuner */
if ((Bits & 0xFF00) != 0) {
state->reg[MT2063_REG_PWR_2] &= ~(u8) (Bits >> 8);
status |=
mt2063_write(state,
MT2063_REG_PWR_2,
&state->reg[MT2063_REG_PWR_2], 1);
}
if ((Bits & 0xFF) != 0) {
state->reg[MT2063_REG_PWR_1] &= ~(u8) (Bits & 0xFF);
status |=
mt2063_write(state,
MT2063_REG_PWR_1,
&state->reg[MT2063_REG_PWR_1], 1);
}
return status;
}
/*
* 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)
{
int status;
dprintk(2, "\n");
if (Shutdown == 1)
state->reg[MT2063_REG_PWR_1] |= 0x04;
else
state->reg[MT2063_REG_PWR_1] &= ~0x04;
status = mt2063_write(state,
MT2063_REG_PWR_1,
&state->reg[MT2063_REG_PWR_1], 1);
if (Shutdown != 1) {
state->reg[MT2063_REG_BYP_CTRL] =
(state->reg[MT2063_REG_BYP_CTRL] & 0x9F) | 0x40;
status |=
mt2063_write(state,
MT2063_REG_BYP_CTRL,
&state->reg[MT2063_REG_BYP_CTRL],
1);
state->reg[MT2063_REG_BYP_CTRL] =
(state->reg[MT2063_REG_BYP_CTRL] & 0x9F);
status |=
mt2063_write(state,
MT2063_REG_BYP_CTRL,
&state->reg[MT2063_REG_BYP_CTRL],
1);
}
return status;
}
static u32 MT2063_Round_fLO(u32 f_LO, u32 f_LO_Step, u32 f_ref)
{
return f_ref * (f_LO / f_ref)
+ f_LO_Step * (((f_LO % f_ref) + (f_LO_Step / 2)) / f_LO_Step);
}
/**
* 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;
u32 term1 = t1 / denom;
u32 loss = t1 % denom;
u32 term2 =
(((f_ref & 0x00003FFF) * num + (loss << 14)) + (denom / 2)) / denom;
return (term1 << 14) + term2;
}
/*
* 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,
u32 f_LO_Step, u32 f_Ref)
{
/* Calculate the whole number portion of the divider */
*Div = f_LO / f_Ref;
/* Calculate the numerator value (round to nearest f_LO_Step) */
*FracN =
(64 * (((f_LO % f_Ref) + (f_LO_Step / 2)) / f_LO_Step) +
(f_Ref / f_LO_Step / 2)) / (f_Ref / f_LO_Step);
return (f_Ref * (*Div)) + MT2063_fLO_FractionalTerm(f_Ref, *FracN, 64);
}
/**
* 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,
u32 f_LO_Step, u32 f_Ref)
{
/* Calculate the whole number portion of the divider */
*Div = f_LO / f_Ref;
/* Calculate the numerator value (round to nearest f_LO_Step) */
*FracN =
(8191 * (((f_LO % f_Ref) + (f_LO_Step / 2)) / f_LO_Step) +
(f_Ref / f_LO_Step / 2)) / (f_Ref / f_LO_Step);
return (f_Ref * (*Div)) + MT2063_fLO_FractionalTerm(f_Ref, *FracN,
8191);
}
/*
* 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;
u32 idx; /* index loop */
/*
** Find RF Band setting
*/
RFBand = 31; /* def when f_in > all */
for (idx = 0; idx < 31; ++idx) {
if (state->CTFiltMax[idx] >= f_in) {
RFBand = idx;
break;
}
}
return RFBand;
}
/*
* 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 */
int status = 0;
u32 LO1; /* 1st LO register value */
u32 Num1; /* Numerator for LO1 reg. value */
u32 f_IF1; /* 1st IF requested */
u32 LO2; /* 2nd LO register value */
u32 Num2; /* Numerator for LO2 reg. value */
u32 ofLO1, ofLO2; /* last time's LO frequencies */
u8 fiffc = 0x80; /* FIFF center freq from tuner */
u32 fiffof; /* Offset from FIFF center freq */
const u8 LO1LK = 0x80; /* Mask for LO1 Lock bit */
u8 LO2LK = 0x08; /* Mask for LO2 Lock bit */
u8 val;
u32 RFBand;
dprintk(2, "\n");
/* Check the input and output frequency ranges */
if ((f_in < MT2063_MIN_FIN_FREQ) || (f_in > MT2063_MAX_FIN_FREQ))
return -EINVAL;
if ((state->AS_Data.f_out < MT2063_MIN_FOUT_FREQ)
|| (state->AS_Data.f_out > MT2063_MAX_FOUT_FREQ))
return -EINVAL;
/*
* Save original LO1 and LO2 register values
*/
ofLO1 = state->AS_Data.f_LO1;
ofLO2 = state->AS_Data.f_LO2;
/*
* Find and set RF Band setting
*/
if (state->ctfilt_sw == 1) {
val = (state->reg[MT2063_REG_CTUNE_CTRL] | 0x08);
if (state->reg[MT2063_REG_CTUNE_CTRL] != val) {
status |=
mt2063_setreg(state, MT2063_REG_CTUNE_CTRL, val);
}
val = state->reg[MT2063_REG_CTUNE_OV];
RFBand = FindClearTuneFilter(state, f_in);
state->reg[MT2063_REG_CTUNE_OV] =
(u8) ((state->reg[MT2063_REG_CTUNE_OV] & ~0x1F)
| RFBand);
if (state->reg[MT2063_REG_CTUNE_OV] != val) {
status |=
mt2063_setreg(state, MT2063_REG_CTUNE_OV, val);
}
}
/*
* Read the FIFF Center Frequency from the tuner
*/
if (status >= 0) {
status |=
mt2063_read(state,
MT2063_REG_FIFFC,
&state->reg[MT2063_REG_FIFFC], 1);
fiffc = state->reg[MT2063_REG_FIFFC];
}
/*
* Assign in the requested values
*/
state->AS_Data.f_in = f_in;
/* Request a 1st IF such that LO1 is on a step size */
state->AS_Data.f_if1_Request =
MT2063_Round_fLO(state->AS_Data.f_if1_Request + f_in,
state->AS_Data.f_LO1_Step,
state->AS_Data.f_ref) - f_in;
/*
* Calculate frequency settings. f_IF1_FREQ + f_in is the
* desired LO1 frequency
*/
MT2063_ResetExclZones(&state->AS_Data);
f_IF1 = MT2063_ChooseFirstIF(&state->AS_Data);
state->AS_Data.f_LO1 =
MT2063_Round_fLO(f_IF1 + f_in, state->AS_Data.f_LO1_Step,
state->AS_Data.f_ref);
state->AS_Data.f_LO2 =
MT2063_Round_fLO(state->AS_Data.f_LO1 - state->AS_Data.f_out - 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
*/
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.
*/
state->AS_Data.f_LO1 =
MT2063_CalcLO1Mult(&LO1, &Num1, state->AS_Data.f_LO1,
state->AS_Data.f_LO1_Step, state->AS_Data.f_ref);
state->AS_Data.f_LO2 =
MT2063_Round_fLO(state->AS_Data.f_LO1 - state->AS_Data.f_out - f_in,
state->AS_Data.f_LO2_Step, state->AS_Data.f_ref);
state->AS_Data.f_LO2 =
MT2063_CalcLO2Mult(&LO2, &Num2, state->AS_Data.f_LO2,
state->AS_Data.f_LO2_Step, state->AS_Data.f_ref);
/*
* 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))
status |= MT2063_UPC_RANGE;
if ((state->AS_Data.f_LO2 < MT2063_MIN_DNC_FREQ)
|| (state->AS_Data.f_LO2 > MT2063_MAX_DNC_FREQ))
status |= MT2063_DNC_RANGE;
/* LO2 Lock bit was in a different place for B0 version */
if (state->tuner_id == MT2063_B0)
LO2LK = 0x40;
/*
* 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
*/
fiffof =
(state->AS_Data.f_LO1 -
f_in) / (state->AS_Data.f_ref / 64) - 8 * (u32) fiffc -
4992;
if (fiffof > 0xFF)
fiffof = 0xFF;
/*
* 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 */
state->reg[MT2063_REG_LO1CQ_2] = (u8) (Num1 & 0x3F); /* NUM1q */
state->reg[MT2063_REG_LO2CQ_1] = (u8) (((LO2 & 0x7F) << 1) /* DIV2q */
|(Num2 >> 12)); /* NUM2q (hi) */
state->reg[MT2063_REG_LO2CQ_2] = (u8) ((Num2 & 0x0FF0) >> 4); /* NUM2q (mid) */
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).
*/
status |= mt2063_write(state, MT2063_REG_LO1CQ_1, &state->reg[MT2063_REG_LO1CQ_1], 5); /* 0x01 - 0x05 */
if (state->tuner_id == MT2063_B0) {
/* Re-write the one-shot bits to trigger the tune operation */
status |= mt2063_write(state, MT2063_REG_LO2CQ_3, &state->reg[MT2063_REG_LO2CQ_3], 1); /* 0x05 */
}
/* Write out the FIFF offset only if it's changing */
if (state->reg[MT2063_REG_FIFF_OFFSET] !=
(u8) fiffof) {
state->reg[MT2063_REG_FIFF_OFFSET] =
(u8) fiffof;
status |=
mt2063_write(state,
MT2063_REG_FIFF_OFFSET,
&state->
reg[MT2063_REG_FIFF_OFFSET],
1);
}
}
/*
* Check for LO's locking
*/
if (status < 0)
return status;
status = mt2063_lockStatus(state);
if (status < 0)
return status;
if (!status)
return -EINVAL; /* Couldn't lock */
/*
* If we locked OK, assign calculated data to mt2063_state structure
*/
state->f_IF1_actual = state->AS_Data.f_LO1 - f_in;
}
return status;
}
static const u8 MT2063B0_defaults[] = {
/* Reg, Value */
0x19, 0x05,
0x1B, 0x1D,
0x1C, 0x1F,
0x1D, 0x0F,
0x1E, 0x3F,
0x1F, 0x0F,
0x20, 0x3F,
0x22, 0x21,
0x23, 0x3F,
0x24, 0x20,
0x25, 0x3F,
0x27, 0xEE,
0x2C, 0x27, /* bit at 0x20 is cleared below */
0x30, 0x03,
0x2C, 0x07, /* bit at 0x20 is cleared here */
0x2D, 0x87,
0x2E, 0xAA,
0x28, 0xE1, /* Set the FIFCrst bit here */
0x28, 0xE0, /* Clear the FIFCrst bit here */
0x00
};
/* writing 0x05 0xf0 sw-resets all registers, so we write only needed changes */
static const u8 MT2063B1_defaults[] = {
/* Reg, Value */
0x05, 0xF0,
0x11, 0x10, /* New Enable AFCsd */
0x19, 0x05,
0x1A, 0x6C,
0x1B, 0x24,
0x1C, 0x28,
0x1D, 0x8F,
0x1E, 0x14,
0x1F, 0x8F,
0x20, 0x57,
0x22, 0x21, /* New - ver 1.03 */
0x23, 0x3C, /* New - ver 1.10 */
0x24, 0x20, /* New - ver 1.03 */
0x2C, 0x24, /* bit at 0x20 is cleared below */
0x2D, 0x87, /* FIFFQ=0 */
0x2F, 0xF3,
0x30, 0x0C, /* New - ver 1.11 */
0x31, 0x1B, /* New - ver 1.11 */
0x2C, 0x04, /* bit at 0x20 is cleared here */
0x28, 0xE1, /* Set the FIFCrst bit here */
0x28, 0xE0, /* Clear the FIFCrst bit here */
0x00
};
/* writing 0x05 0xf0 sw-resets all registers, so we write only needed changes */
static const u8 MT2063B3_defaults[] = {
/* Reg, Value */
0x05, 0xF0,
0x19, 0x3D,
0x2C, 0x24, /* bit at 0x20 is cleared below */
0x2C, 0x04, /* bit at 0x20 is cleared here */
0x28, 0xE1, /* Set the FIFCrst bit here */
0x28, 0xE0, /* Clear the FIFCrst bit here */
0x00
};
static int mt2063_init(struct dvb_frontend *fe)
{
int status;
struct mt2063_state *state = fe->tuner_priv;
u8 all_resets = 0xF0; /* reset/load bits */
const u8 *def = NULL;
char *step;
u32 FCRUN;
s32 maxReads;
u32 fcu_osc;
u32 i;
dprintk(2, "\n");
state->rcvr_mode = MT2063_CABLE_QAM;
/* Read the Part/Rev code from the tuner */
status = mt2063_read(state, MT2063_REG_PART_REV,
&state->reg[MT2063_REG_PART_REV], 1);
if (status < 0) {
printk(KERN_ERR "Can't read mt2063 part ID\n");
return status;
}
/* Check the part/rev code */
switch (state->reg[MT2063_REG_PART_REV]) {
case MT2063_B0:
step = "B0";
break;
case MT2063_B1:
step = "B1";
break;
case MT2063_B2:
step = "B2";
break;
case MT2063_B3:
step = "B3";
break;
default:
printk(KERN_ERR "mt2063: Unknown mt2063 device ID (0x%02x)\n",
state->reg[MT2063_REG_PART_REV]);
return -ENODEV; /* Wrong tuner Part/Rev code */
}
/* Check the 2nd byte of the Part/Rev code from the tuner */
status = mt2063_read(state, MT2063_REG_RSVD_3B,
&state->reg[MT2063_REG_RSVD_3B], 1);
/* b7 != 0 ==> NOT MT2063 */
if (status < 0 || ((state->reg[MT2063_REG_RSVD_3B] & 0x80) != 0x00)) {
printk(KERN_ERR "mt2063: Unknown part ID (0x%02x%02x)\n",
state->reg[MT2063_REG_PART_REV],
state->reg[MT2063_REG_RSVD_3B]);
return -ENODEV; /* Wrong tuner Part/Rev code */
}
printk(KERN_INFO "mt2063: detected a mt2063 %s\n", step);
/* Reset the tuner */
status = mt2063_write(state, MT2063_REG_LO2CQ_3, &all_resets, 1);
if (status < 0)
return status;
/* change all of the default values that vary from the HW reset values */
/* def = (state->reg[PART_REV] == MT2063_B0) ? MT2063B0_defaults : MT2063B1_defaults; */
switch (state->reg[MT2063_REG_PART_REV]) {
case MT2063_B3:
def = MT2063B3_defaults;
break;
case MT2063_B1:
def = MT2063B1_defaults;
break;
case MT2063_B0:
def = MT2063B0_defaults;
break;
default:
return -ENODEV;
break;
}
while (status >= 0 && *def) {
u8 reg = *def++;
u8 val = *def++;
status = mt2063_write(state, reg, &val, 1);
}
if (status < 0)
return status;
/* Wait for FIFF location to complete. */
FCRUN = 1;
maxReads = 10;
while (status >= 0 && (FCRUN != 0) && (maxReads-- > 0)) {
msleep(2);
status = mt2063_read(state,
MT2063_REG_XO_STATUS,
&state->
reg[MT2063_REG_XO_STATUS], 1);
FCRUN = (state->reg[MT2063_REG_XO_STATUS] & 0x40) >> 6;
}
if (FCRUN != 0 || status < 0)
return -ENODEV;
status = mt2063_read(state,
MT2063_REG_FIFFC,
&state->reg[MT2063_REG_FIFFC], 1);
if (status < 0)
return status;
/* Read back all the registers from the tuner */
status = mt2063_read(state,
MT2063_REG_PART_REV,
state->reg, MT2063_REG_END_REGS);
if (status < 0)
return status;
/* Initialize the tuner state. */
state->tuner_id = state->reg[MT2063_REG_PART_REV];
state->AS_Data.f_ref = MT2063_REF_FREQ;
state->AS_Data.f_if1_Center = (state->AS_Data.f_ref / 8) *
((u32) state->reg[MT2063_REG_FIFFC] + 640);
state->AS_Data.f_if1_bw = MT2063_IF1_BW;
state->AS_Data.f_out = 43750000UL;
state->AS_Data.f_out_bw = 6750000UL;
state->AS_Data.f_zif_bw = MT2063_ZIF_BW;
state->AS_Data.f_LO1_Step = state->AS_Data.f_ref / 64;
state->AS_Data.f_LO2_Step = MT2063_TUNE_STEP_SIZE;
state->AS_Data.maxH1 = MT2063_MAX_HARMONICS_1;
state->AS_Data.maxH2 = MT2063_MAX_HARMONICS_2;
state->AS_Data.f_min_LO_Separation = MT2063_MIN_LO_SEP;
state->AS_Data.f_if1_Request = state->AS_Data.f_if1_Center;
state->AS_Data.f_LO1 = 2181000000UL;
state->AS_Data.f_LO2 = 1486249786UL;
state->f_IF1_actual = state->AS_Data.f_if1_Center;
state->AS_Data.f_in = state->AS_Data.f_LO1 - state->f_IF1_actual;
state->AS_Data.f_LO1_FracN_Avoid = MT2063_LO1_FRACN_AVOID;
state->AS_Data.f_LO2_FracN_Avoid = MT2063_LO2_FRACN_AVOID;
state->num_regs = MT2063_REG_END_REGS;
state->AS_Data.avoidDECT = MT2063_AVOID_BOTH;
state->ctfilt_sw = 0;
state->CTFiltMax[0] = 69230000;
state->CTFiltMax[1] = 105770000;
state->CTFiltMax[2] = 140350000;
state->CTFiltMax[3] = 177110000;
state->CTFiltMax[4] = 212860000;
state->CTFiltMax[5] = 241130000;
state->CTFiltMax[6] = 274370000;
state->CTFiltMax[7] = 309820000;
state->CTFiltMax[8] = 342450000;
state->CTFiltMax[9] = 378870000;
state->CTFiltMax[10] = 416210000;
state->CTFiltMax[11] = 456500000;
state->CTFiltMax[12] = 495790000;
state->CTFiltMax[13] = 534530000;
state->CTFiltMax[14] = 572610000;
state->CTFiltMax[15] = 598970000;
state->CTFiltMax[16] = 635910000;
state->CTFiltMax[17] = 672130000;
state->CTFiltMax[18] = 714840000;
state->CTFiltMax[19] = 739660000;
state->CTFiltMax[20] = 770410000;
state->CTFiltMax[21] = 814660000;
state->CTFiltMax[22] = 846950000;
state->CTFiltMax[23] = 867820000;
state->CTFiltMax[24] = 915980000;
state->CTFiltMax[25] = 947450000;
state->CTFiltMax[26] = 983110000;
state->CTFiltMax[27] = 1021630000;
state->CTFiltMax[28] = 1061870000;
state->CTFiltMax[29] = 1098330000;
state->CTFiltMax[30] = 1138990000;
/*
** Fetch the FCU osc value and use it and the fRef value to
** scale all of the Band Max values
*/
state->reg[MT2063_REG_CTUNE_CTRL] = 0x0A;
status = mt2063_write(state, MT2063_REG_CTUNE_CTRL,
&state->reg[MT2063_REG_CTUNE_CTRL], 1);
if (status < 0)
return status;
/* Read the ClearTune filter calibration value */
status = mt2063_read(state, MT2063_REG_FIFFC,
&state->reg[MT2063_REG_FIFFC], 1);
if (status < 0)
return status;
fcu_osc = state->reg[MT2063_REG_FIFFC];
state->reg[MT2063_REG_CTUNE_CTRL] = 0x00;
status = mt2063_write(state, MT2063_REG_CTUNE_CTRL,
&state->reg[MT2063_REG_CTUNE_CTRL], 1);
if (status < 0)
return status;
/* Adjust each of the values in the ClearTune filter cross-over table */
for (i = 0; i < 31; i++)
state->CTFiltMax[i] = (state->CTFiltMax[i] / 768) * (fcu_osc + 640);
status = MT2063_SoftwareShutdown(state, 1);
if (status < 0)
return status;
status = MT2063_ClearPowerMaskBits(state, MT2063_ALL_SD);
if (status < 0)
return status;
state->init = true;
return 0;
}
static int mt2063_get_status(struct dvb_frontend *fe, u32 *tuner_status)
{
struct mt2063_state *state = fe->tuner_priv;
int status;
dprintk(2, "\n");
if (!state->init)
return -ENODEV;
*tuner_status = 0;
status = mt2063_lockStatus(state);
if (status < 0)
return status;
if (status)
*tuner_status = TUNER_STATUS_LOCKED;
dprintk(1, "Tuner status: %d", *tuner_status);
return 0;
}
static int mt2063_release(struct dvb_frontend *fe)
{
struct mt2063_state *state = fe->tuner_priv;
dprintk(2, "\n");
fe->tuner_priv = NULL;
kfree(state);
return 0;
}
static int mt2063_set_analog_params(struct dvb_frontend *fe,
struct analog_parameters *params)
{
struct mt2063_state *state = fe->tuner_priv;
s32 pict_car;
s32 pict2chanb_vsb;
s32 ch_bw;
s32 if_mid;
s32 rcvr_mode;
int status;
dprintk(2, "\n");
if (!state->init) {
status = mt2063_init(fe);
if (status < 0)
return status;
}
switch (params->mode) {
case V4L2_TUNER_RADIO:
pict_car = 38900000;
ch_bw = 8000000;
pict2chanb_vsb = -(ch_bw / 2);
rcvr_mode = MT2063_OFFAIR_ANALOG;
break;
case V4L2_TUNER_ANALOG_TV:
rcvr_mode = MT2063_CABLE_ANALOG;
if (params->std & ~V4L2_STD_MN) {
pict_car = 38900000;
ch_bw = 6000000;
pict2chanb_vsb = -1250000;
} else if (params->std & V4L2_STD_PAL_G) {
pict_car = 38900000;
ch_bw = 7000000;
pict2chanb_vsb = -1250000;
} else { /* PAL/SECAM standards */
pict_car = 38900000;
ch_bw = 8000000;
pict2chanb_vsb = -1250000;
}
break;
default:
return -EINVAL;
}
if_mid = pict_car - (pict2chanb_vsb + (ch_bw / 2));
state->AS_Data.f_LO2_Step = 125000; /* FIXME: probably 5000 for FM */
state->AS_Data.f_out = if_mid;
state->AS_Data.f_out_bw = ch_bw + 750000;
status = MT2063_SetReceiverMode(state, rcvr_mode);
if (status < 0)
return status;
dprintk(1, "Tuning to frequency: %d, bandwidth %d, foffset %d\n",
params->frequency, ch_bw, pict2chanb_vsb);
status = MT2063_Tune(state, (params->frequency + (pict2chanb_vsb + (ch_bw / 2))));
if (status < 0)
return status;
state->frequency = params->frequency;
return 0;
}
/*
* 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)
* As such, the maximum symbol rate supported by 6 MHz is given by:
* max_symbol_rate = 6 MHz / 1.15 = 5217391 Bauds
*/
#define MAX_SYMBOL_RATE_6MHz 5217391
static int mt2063_set_params(struct dvb_frontend *fe)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct mt2063_state *state = fe->tuner_priv;
int status;
s32 pict_car;
s32 pict2chanb_vsb;
s32 ch_bw;
s32 if_mid;
s32 rcvr_mode;
if (!state->init) {
status = mt2063_init(fe);
if (status < 0)
return status;
}
dprintk(2, "\n");
if (c->bandwidth_hz == 0)
return -EINVAL;
if (c->bandwidth_hz <= 6000000)
ch_bw = 6000000;
else if (c->bandwidth_hz <= 7000000)
ch_bw = 7000000;
else
ch_bw = 8000000;
switch (c->delivery_system) {
case SYS_DVBT:
rcvr_mode = MT2063_OFFAIR_COFDM;
pict_car = 36125000;
pict2chanb_vsb = -(ch_bw / 2);
break;
case SYS_DVBC_ANNEX_A:
case SYS_DVBC_ANNEX_C:
rcvr_mode = MT2063_CABLE_QAM;
pict_car = 36125000;
pict2chanb_vsb = -(ch_bw / 2);
break;
default:
return -EINVAL;
}
if_mid = pict_car - (pict2chanb_vsb + (ch_bw / 2));
state->AS_Data.f_LO2_Step = 125000; /* FIXME: probably 5000 for FM */
state->AS_Data.f_out = if_mid;
state->AS_Data.f_out_bw = ch_bw + 750000;
status = MT2063_SetReceiverMode(state, rcvr_mode);
if (status < 0)
return status;
dprintk(1, "Tuning to frequency: %d, bandwidth %d, foffset %d\n",
c->frequency, ch_bw, pict2chanb_vsb);
status = MT2063_Tune(state, (c->frequency + (pict2chanb_vsb + (ch_bw / 2))));
if (status < 0)
return status;
state->frequency = c->frequency;
return 0;
}
static int mt2063_get_if_frequency(struct dvb_frontend *fe, u32 *freq)
{
struct mt2063_state *state = fe->tuner_priv;
dprintk(2, "\n");
if (!state->init)
return -ENODEV;
*freq = state->AS_Data.f_out;
dprintk(1, "IF frequency: %d\n", *freq);
return 0;
}
static int mt2063_get_bandwidth(struct dvb_frontend *fe, u32 *bw)
{
struct mt2063_state *state = fe->tuner_priv;
dprintk(2, "\n");
if (!state->init)
return -ENODEV;
*bw = state->AS_Data.f_out_bw - 750000;
dprintk(1, "bandwidth: %d\n", *bw);
return 0;
}
static struct dvb_tuner_ops mt2063_ops = {
.info = {
.name = "MT2063 Silicon Tuner",
.frequency_min = 45000000,
.frequency_max = 865000000,
.frequency_step = 0,
},
.init = mt2063_init,
.sleep = MT2063_Sleep,
.get_status = mt2063_get_status,
.set_analog_params = mt2063_set_analog_params,
.set_params = mt2063_set_params,
.get_if_frequency = mt2063_get_if_frequency,
.get_bandwidth = mt2063_get_bandwidth,
.release = mt2063_release,
};
struct dvb_frontend *mt2063_attach(struct dvb_frontend *fe,
struct mt2063_config *config,
struct i2c_adapter *i2c)
{
struct mt2063_state *state = NULL;
dprintk(2, "\n");
state = kzalloc(sizeof(struct mt2063_state), GFP_KERNEL);
if (!state)
return NULL;
state->config = config;
state->i2c = i2c;
state->frontend = fe;
state->reference = config->refclock / 1000; /* kHz */
fe->tuner_priv = state;
fe->ops.tuner_ops = mt2063_ops;
printk(KERN_INFO "%s: Attaching MT2063\n", __func__);
return fe;
}
EXPORT_SYMBOL_GPL(mt2063_attach);
#if 0
/*
* Ancillary routines visible outside mt2063
* FIXME: Remove them in favor of using standard tuner callbacks
*/
static int tuner_MT2063_SoftwareShutdown(struct dvb_frontend *fe)
{
struct mt2063_state *state = fe->tuner_priv;
int err = 0;
dprintk(2, "\n");
err = MT2063_SoftwareShutdown(state, 1);
if (err < 0)
printk(KERN_ERR "%s: Couldn't shutdown\n", __func__);
return err;
}
static int tuner_MT2063_ClearPowerMaskBits(struct dvb_frontend *fe)
{
struct mt2063_state *state = fe->tuner_priv;
int err = 0;
dprintk(2, "\n");
err = MT2063_ClearPowerMaskBits(state, MT2063_ALL_SD);
if (err < 0)
printk(KERN_ERR "%s: Invalid parameter\n", __func__);
return err;
}
#endif
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
MODULE_DESCRIPTION("MT2063 Silicon tuner");
MODULE_LICENSE("GPL");
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