Quelle cx24116.c Sprache: unbekannt
// SPDX-License-Identifier: GPL-2.0-or-later
/*
Conexant cx24116 / cx24118 - DVBS / S2 Satellite demod / tuner driver
Copyright ( C ) 2006 - 2008 Steven Toth < stoth @ hauppauge . com >
Copyright ( C ) 2006 - 2007 Georg Acher
Copyright ( C ) 2007 - 2008 Darron Broad
March 2007
Fixed some bugs .
Added diseqc support .
Added corrected signal strength support .
August 2007
Sync with legacy version .
Some clean ups .
Copyright ( C ) 2008 Igor Liplianin
September , 9 th 2008
Fixed locking on high symbol rates ( > 30000 ) .
Implement MPEG initialization parameter .
January , 17 th 2009
Fill set_voltage with actually control voltage code .
Correct set tone to not affect voltage .
*/
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/firmware.h>
#include <media/dvb_frontend.h>
#include "cx24116.h"
static int debug;
module_param(debug, int , 0644 );
MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)" );
#define dprintk(args...) \
do { \
if (debug) \
printk(KERN_INFO "cx24116: " args); \
} while (0 )
#define CX24116_DEFAULT_FIRMWARE "dvb-fe-cx24116.fw"
#define CX24116_SEARCH_RANGE_KHZ 5000
/* known registers */
#define CX24116_REG_COMMAND (0 x00) /* command args 0x00..0x1e */
#define CX24116_REG_EXECUTE (0 x1f) /* execute command */
#define CX24116_REG_MAILBOX (0 x96) /* FW or multipurpose mailbox? */
#define CX24116_REG_RESET (0 x20) /* reset status > 0 */
#define CX24116_REG_SIGNAL (0 x9e) /* signal low */
#define CX24116_REG_SSTATUS (0 x9d) /* signal high / status */
#define CX24116_REG_QUALITY8 (0 xa3)
#define CX24116_REG_QSTATUS (0 xbc)
#define CX24116_REG_QUALITY0 (0 xd5)
#define CX24116_REG_BER0 (0 xc9)
#define CX24116_REG_BER8 (0 xc8)
#define CX24116_REG_BER16 (0 xc7)
#define CX24116_REG_BER24 (0 xc6)
#define CX24116_REG_UCB0 (0 xcb)
#define CX24116_REG_UCB8 (0 xca)
#define CX24116_REG_CLKDIV (0 xf3)
#define CX24116_REG_RATEDIV (0 xf9)
/* configured fec (not tuned) or actual FEC (tuned) 1=1/2 2=2/3 etc */
#define CX24116_REG_FECSTATUS (0 x9c)
/* FECSTATUS bits */
/* mask to determine configured fec (not tuned) or actual fec (tuned) */
#define CX24116_FEC_FECMASK (0 x1f)
/* Select DVB-S demodulator, else DVB-S2 */
#define CX24116_FEC_DVBS (0 x20)
#define CX24116_FEC_UNKNOWN (0 x40) /* Unknown/unused */
/* Pilot mode requested when tuning else always reset when tuned */
#define CX24116_FEC_PILOT (0 x80)
/* arg buffer size */
#define CX24116_ARGLEN (0 x1e)
/* rolloff */
#define CX24116_ROLLOFF_020 (0 x00)
#define CX24116_ROLLOFF_025 (0 x01)
#define CX24116_ROLLOFF_035 (0 x02)
/* pilot bit */
#define CX24116_PILOT_OFF (0 x00)
#define CX24116_PILOT_ON (0 x40)
/* signal status */
#define CX24116_HAS_SIGNAL (0 x01)
#define CX24116_HAS_CARRIER (0 x02)
#define CX24116_HAS_VITERBI (0 x04)
#define CX24116_HAS_SYNCLOCK (0 x08)
#define CX24116_HAS_UNKNOWN1 (0 x10)
#define CX24116_HAS_UNKNOWN2 (0 x20)
#define CX24116_STATUS_MASK (0 x0f)
#define CX24116_SIGNAL_MASK (0 xc0)
#define CX24116_DISEQC_TONEOFF (0 ) /* toneburst never sent */
#define CX24116_DISEQC_TONECACHE (1 ) /* toneburst cached */
#define CX24116_DISEQC_MESGCACHE (2 ) /* message cached */
/* arg offset for DiSEqC */
#define CX24116_DISEQC_BURST (1 )
#define CX24116_DISEQC_ARG2_2 (2 ) /* unknown value=2 */
#define CX24116_DISEQC_ARG3_0 (3 ) /* unknown value=0 */
#define CX24116_DISEQC_ARG4_0 (4 ) /* unknown value=0 */
#define CX24116_DISEQC_MSGLEN (5 )
#define CX24116_DISEQC_MSGOFS (6 )
/* DiSEqC burst */
#define CX24116_DISEQC_MINI_A (0 )
#define CX24116_DISEQC_MINI_B (1 )
/* DiSEqC tone burst */
static int toneburst = 1 ;
module_param(toneburst, int , 0644 );
MODULE_PARM_DESC(toneburst, "DiSEqC toneburst 0=OFF, 1=TONE CACHE, " \
"2=MESSAGE CACHE (default:1)" );
/* SNR measurements */
static int esno_snr;
module_param(esno_snr, int , 0644 );
MODULE_PARM_DESC(esno_snr, "SNR return units, 0=PERCENTAGE 0-100, " \
"1=ESNO(db * 10) (default:0)" );
enum cmds {
CMD_SET_VCO = 0 x10,
CMD_TUNEREQUEST = 0 x11,
CMD_MPEGCONFIG = 0 x13,
CMD_TUNERINIT = 0 x14,
CMD_BANDWIDTH = 0 x15,
CMD_GETAGC = 0 x19,
CMD_LNBCONFIG = 0 x20,
CMD_LNBSEND = 0 x21, /* Formerly CMD_SEND_DISEQC */
CMD_LNBDCLEVEL = 0 x22,
CMD_SET_TONE = 0 x23,
CMD_UPDFWVERS = 0 x35,
CMD_TUNERSLEEP = 0 x36,
CMD_AGCCONTROL = 0 x3b, /* Unknown */
};
/* The Demod/Tuner can't easily provide these, we cache them */
struct cx24116_tuning {
u32 frequency;
u32 symbol_rate;
enum fe_spectral_inversion inversion;
enum fe_code_rate fec;
enum fe_delivery_system delsys;
enum fe_modulation modulation;
enum fe_pilot pilot;
enum fe_rolloff rolloff;
/* Demod values */
u8 fec_val;
u8 fec_mask;
u8 inversion_val;
u8 pilot_val;
u8 rolloff_val;
};
/* Basic commands that are sent to the firmware */
struct cx24116_cmd {
u8 len;
u8 args[CX24116_ARGLEN];
};
struct cx24116_state {
struct i2c_adapter *i2c;
const struct cx24116_config *config;
struct dvb_frontend frontend;
struct cx24116_tuning dcur;
struct cx24116_tuning dnxt;
u8 skip_fw_load;
u8 burst;
struct cx24116_cmd dsec_cmd;
};
static int cx24116_writereg(struct cx24116_state *state, int reg, int data)
{
u8 buf[] = { reg, data };
struct i2c_msg msg = { .addr = state->config->demod_address,
.flags = 0 , .buf = buf, .len = 2 };
int err;
if (debug > 1 )
printk("cx24116: %s: write reg 0x%02x, value 0x%02x\n" ,
__func__, reg, data);
err = i2c_transfer(state->i2c, &msg, 1 );
if (err != 1 ) {
printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x, value == 0x%02x)\n" ,
__func__, err, reg, data);
return -EREMOTEIO;
}
return 0 ;
}
/* Bulk byte writes to a single I2C address, for 32k firmware load */
static int cx24116_writeregN(struct cx24116_state *state, int reg,
const u8 *data, u16 len)
{
int ret;
struct i2c_msg msg;
u8 *buf;
buf = kmalloc(len + 1 , GFP_KERNEL);
if (!buf)
return -ENOMEM;
*(buf) = reg;
memcpy(buf + 1 , data, len);
msg.addr = state->config->demod_address;
msg.flags = 0 ;
msg.buf = buf;
msg.len = len + 1 ;
if (debug > 1 )
printk(KERN_INFO "cx24116: %s: write regN 0x%02x, len = %d\n" ,
__func__, reg, len);
ret = i2c_transfer(state->i2c, &msg, 1 );
if (ret != 1 ) {
printk(KERN_ERR "%s: writereg error(err == %i, reg == 0x%02x\n" ,
__func__, ret, reg);
ret = -EREMOTEIO;
}
kfree(buf);
return ret;
}
static int cx24116_readreg(struct cx24116_state *state, u8 reg)
{
int ret;
u8 b0[] = { reg };
u8 b1[] = { 0 };
struct i2c_msg msg[] = {
{ .addr = state->config->demod_address, .flags = 0 ,
.buf = b0, .len = 1 },
{ .addr = state->config->demod_address, .flags = I2C_M_RD,
.buf = b1, .len = 1 }
};
ret = i2c_transfer(state->i2c, msg, 2 );
if (ret != 2 ) {
printk(KERN_ERR "%s: reg=0x%x (error=%d)\n" ,
__func__, reg, ret);
return ret;
}
if (debug > 1 )
printk(KERN_INFO "cx24116: read reg 0x%02x, value 0x%02x\n" ,
reg, b1[0 ]);
return b1[0 ];
}
static int cx24116_set_inversion(struct cx24116_state *state,
enum fe_spectral_inversion inversion)
{
dprintk("%s(%d)\n" , __func__, inversion);
switch (inversion) {
case INVERSION_OFF:
state->dnxt.inversion_val = 0 x00;
break ;
case INVERSION_ON:
state->dnxt.inversion_val = 0 x04;
break ;
case INVERSION_AUTO:
state->dnxt.inversion_val = 0 x0C;
break ;
default :
return -EINVAL;
}
state->dnxt.inversion = inversion;
return 0 ;
}
/*
* modfec ( modulation and FEC )
* = = = = = = = = = = = = = = = = = = = = = = = = = = =
*
* MOD FEC mask / val standard
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
* QPSK FEC_1_2 0 x02 0 x02 + X DVB - S
* QPSK FEC_2_3 0 x04 0 x02 + X DVB - S
* QPSK FEC_3_4 0 x08 0 x02 + X DVB - S
* QPSK FEC_4_5 0 x10 0 x02 + X DVB - S ( ? )
* QPSK FEC_5_6 0 x20 0 x02 + X DVB - S
* QPSK FEC_6_7 0 x40 0 x02 + X DVB - S
* QPSK FEC_7_8 0 x80 0 x02 + X DVB - S
* QPSK FEC_8_9 0 x01 0 x02 + X DVB - S ( ? ) ( NOT SUPPORTED ? )
* QPSK AUTO 0 xff 0 x02 + X DVB - S
*
* For DVB - S high byte probably represents FEC
* and low byte selects the modulator . The high
* byte is search range mask . Bit 5 may turn
* on DVB - S and remaining bits represent some
* kind of calibration ( how / what i do not know ) .
*
* Eg . ( 2 / 3 ) szap " Zone Horror "
*
* mask / val = 0 x04 , 0 x20
* status 1 f | signal c3c0 | snr a333 | ber 00000098 | unc 0 | FE_HAS_LOCK
*
* mask / val = 0 x04 , 0 x30
* status 1 f | signal c3c0 | snr a333 | ber 00000000 | unc 0 | FE_HAS_LOCK
*
* After tuning FECSTATUS contains actual FEC
* in use numbered 1 through to 8 for 1 / 2 . . 2 / 3 etc
*
* NBC = NOT / NON BACKWARD COMPATIBLE WITH DVB - S ( DVB - S2 only )
*
* NBC - QPSK FEC_1_2 0 x00 , 0 x04 DVB - S2
* NBC - QPSK FEC_3_5 0 x00 , 0 x05 DVB - S2
* NBC - QPSK FEC_2_3 0 x00 , 0 x06 DVB - S2
* NBC - QPSK FEC_3_4 0 x00 , 0 x07 DVB - S2
* NBC - QPSK FEC_4_5 0 x00 , 0 x08 DVB - S2
* NBC - QPSK FEC_5_6 0 x00 , 0 x09 DVB - S2
* NBC - QPSK FEC_8_9 0 x00 , 0 x0a DVB - S2
* NBC - QPSK FEC_9_10 0 x00 , 0 x0b DVB - S2
*
* NBC - 8 PSK FEC_3_5 0 x00 , 0 x0c DVB - S2
* NBC - 8 PSK FEC_2_3 0 x00 , 0 x0d DVB - S2
* NBC - 8 PSK FEC_3_4 0 x00 , 0 x0e DVB - S2
* NBC - 8 PSK FEC_5_6 0 x00 , 0 x0f DVB - S2
* NBC - 8 PSK FEC_8_9 0 x00 , 0 x10 DVB - S2
* NBC - 8 PSK FEC_9_10 0 x00 , 0 x11 DVB - S2
*
* For DVB - S2 low bytes selects both modulator
* and FEC . High byte is meaningless here . To
* set pilot , bit 6 ( 0 x40 ) is set . When inspecting
* FECSTATUS bit 7 ( 0 x80 ) represents the pilot
* selection whilst not tuned . When tuned , actual FEC
* in use is found in FECSTATUS as per above . Pilot
* value is reset .
*/
/* A table of modulation, fec and configuration bytes for the demod.
* Not all S2 mmodulation schemes are support and not all rates with
* a scheme are support . Especially , no auto detect when in S2 mode .
*/
static struct cx24116_modfec {
enum fe_delivery_system delivery_system;
enum fe_modulation modulation;
enum fe_code_rate fec;
u8 mask; /* In DVBS mode this is used to autodetect */
u8 val; /* Passed to the firmware to indicate mode selection */
} CX24116_MODFEC_MODES[] = {
/* QPSK. For unknown rates we set hardware to auto detect 0xfe 0x30 */
/*mod fec mask val */
{ SYS_DVBS, QPSK, FEC_NONE, 0 xfe, 0 x30 },
{ SYS_DVBS, QPSK, FEC_1_2, 0 x02, 0 x2e }, /* 00000010 00101110 */
{ SYS_DVBS, QPSK, FEC_2_3, 0 x04, 0 x2f }, /* 00000100 00101111 */
{ SYS_DVBS, QPSK, FEC_3_4, 0 x08, 0 x30 }, /* 00001000 00110000 */
{ SYS_DVBS, QPSK, FEC_4_5, 0 xfe, 0 x30 }, /* 000?0000 ? */
{ SYS_DVBS, QPSK, FEC_5_6, 0 x20, 0 x31 }, /* 00100000 00110001 */
{ SYS_DVBS, QPSK, FEC_6_7, 0 xfe, 0 x30 }, /* 0?000000 ? */
{ SYS_DVBS, QPSK, FEC_7_8, 0 x80, 0 x32 }, /* 10000000 00110010 */
{ SYS_DVBS, QPSK, FEC_8_9, 0 xfe, 0 x30 }, /* 0000000? ? */
{ SYS_DVBS, QPSK, FEC_AUTO, 0 xfe, 0 x30 },
/* NBC-QPSK */
{ SYS_DVBS2, QPSK, FEC_1_2, 0 x00, 0 x04 },
{ SYS_DVBS2, QPSK, FEC_3_5, 0 x00, 0 x05 },
{ SYS_DVBS2, QPSK, FEC_2_3, 0 x00, 0 x06 },
{ SYS_DVBS2, QPSK, FEC_3_4, 0 x00, 0 x07 },
{ SYS_DVBS2, QPSK, FEC_4_5, 0 x00, 0 x08 },
{ SYS_DVBS2, QPSK, FEC_5_6, 0 x00, 0 x09 },
{ SYS_DVBS2, QPSK, FEC_8_9, 0 x00, 0 x0a },
{ SYS_DVBS2, QPSK, FEC_9_10, 0 x00, 0 x0b },
/* 8PSK */
{ SYS_DVBS2, PSK_8, FEC_3_5, 0 x00, 0 x0c },
{ SYS_DVBS2, PSK_8, FEC_2_3, 0 x00, 0 x0d },
{ SYS_DVBS2, PSK_8, FEC_3_4, 0 x00, 0 x0e },
{ SYS_DVBS2, PSK_8, FEC_5_6, 0 x00, 0 x0f },
{ SYS_DVBS2, PSK_8, FEC_8_9, 0 x00, 0 x10 },
{ SYS_DVBS2, PSK_8, FEC_9_10, 0 x00, 0 x11 },
/*
* ` val ' can be found in the FECSTATUS register when tuning .
* FECSTATUS will give the actual FEC in use if tuning was successful .
*/
};
static int cx24116_lookup_fecmod(struct cx24116_state *state,
enum fe_delivery_system d, enum fe_modulation m, enum fe_code_rate f)
{
int i, ret = -EOPNOTSUPP;
dprintk("%s(0x%02x,0x%02x)\n" , __func__, m, f);
for (i = 0 ; i < ARRAY_SIZE(CX24116_MODFEC_MODES); i++) {
if ((d == CX24116_MODFEC_MODES[i].delivery_system) &&
(m == CX24116_MODFEC_MODES[i].modulation) &&
(f == CX24116_MODFEC_MODES[i].fec)) {
ret = i;
break ;
}
}
return ret;
}
static int cx24116_set_fec(struct cx24116_state *state,
enum fe_delivery_system delsys,
enum fe_modulation mod,
enum fe_code_rate fec)
{
int ret = 0 ;
dprintk("%s(0x%02x,0x%02x)\n" , __func__, mod, fec);
ret = cx24116_lookup_fecmod(state, delsys, mod, fec);
if (ret < 0 )
return ret;
state->dnxt.fec = fec;
state->dnxt.fec_val = CX24116_MODFEC_MODES[ret].val;
state->dnxt.fec_mask = CX24116_MODFEC_MODES[ret].mask;
dprintk("%s() mask/val = 0x%02x/0x%02x\n" , __func__,
state->dnxt.fec_mask, state->dnxt.fec_val);
return 0 ;
}
static int cx24116_set_symbolrate(struct cx24116_state *state, u32 rate)
{
dprintk("%s(%d)\n" , __func__, rate);
/* check if symbol rate is within limits */
if ((rate > state->frontend.ops.info.symbol_rate_max) ||
(rate < state->frontend.ops.info.symbol_rate_min)) {
dprintk("%s() unsupported symbol_rate = %d\n" , __func__, rate);
return -EOPNOTSUPP;
}
state->dnxt.symbol_rate = rate;
dprintk("%s() symbol_rate = %d\n" , __func__, rate);
return 0 ;
}
static int cx24116_load_firmware(struct dvb_frontend *fe,
const struct firmware *fw);
static int cx24116_firmware_ondemand(struct dvb_frontend *fe)
{
struct cx24116_state *state = fe->demodulator_priv;
const struct firmware *fw;
int ret = 0 ;
dprintk("%s()\n" , __func__);
if (cx24116_readreg(state, 0 x20) > 0 ) {
if (state->skip_fw_load)
return 0 ;
/* Load firmware */
/* request the firmware, this will block until loaded */
printk(KERN_INFO "%s: Waiting for firmware upload (%s)...\n" ,
__func__, CX24116_DEFAULT_FIRMWARE);
ret = request_firmware(&fw, CX24116_DEFAULT_FIRMWARE,
state->i2c->dev.parent);
printk(KERN_INFO "%s: Waiting for firmware upload(2)...\n" ,
__func__);
if (ret) {
printk(KERN_ERR "%s: No firmware uploaded (timeout or file not found?)\n" ,
__func__);
return ret;
}
/* Make sure we don't recurse back through here
* during loading */
state->skip_fw_load = 1 ;
ret = cx24116_load_firmware(fe, fw);
if (ret)
printk(KERN_ERR "%s: Writing firmware to device failed\n" ,
__func__);
release_firmware(fw);
printk(KERN_INFO "%s: Firmware upload %s\n" , __func__,
ret == 0 ? "complete" : "failed" );
/* Ensure firmware is always loaded if required */
state->skip_fw_load = 0 ;
}
return ret;
}
/* Take a basic firmware command structure, format it
* and forward it for processing
*/
static int cx24116_cmd_execute(struct dvb_frontend *fe, struct cx24116_cmd *cmd)
{
struct cx24116_state *state = fe->demodulator_priv;
int i, ret;
dprintk("%s()\n" , __func__);
/* Load the firmware if required */
ret = cx24116_firmware_ondemand(fe);
if (ret != 0 ) {
printk(KERN_ERR "%s(): Unable initialise the firmware\n" ,
__func__);
return ret;
}
/* Write the command */
for (i = 0 ; i < cmd->len ; i++) {
dprintk("%s: 0x%02x == 0x%02x\n" , __func__, i, cmd->args[i]);
cx24116_writereg(state, i, cmd->args[i]);
}
/* Start execution and wait for cmd to terminate */
cx24116_writereg(state, CX24116_REG_EXECUTE, 0 x01);
while (cx24116_readreg(state, CX24116_REG_EXECUTE)) {
msleep(10 );
if (i++ > 64 ) {
/* Avoid looping forever if the firmware does
not respond */
printk(KERN_WARNING "%s() Firmware not responding\n" ,
__func__);
return -EREMOTEIO;
}
}
return 0 ;
}
static int cx24116_load_firmware(struct dvb_frontend *fe,
const struct firmware *fw)
{
struct cx24116_state *state = fe->demodulator_priv;
struct cx24116_cmd cmd;
int i, ret, len, max, remaining;
unsigned char vers[4 ];
dprintk("%s\n" , __func__);
dprintk("Firmware is %zu bytes (%02x %02x .. %02x %02x)\n" ,
fw->size,
fw->data[0 ],
fw->data[1 ],
fw->data[fw->size-2 ],
fw->data[fw->size-1 ]);
/* Toggle 88x SRST pin to reset demod */
if (state->config->reset_device)
state->config->reset_device(fe);
/* Begin the firmware load process */
/* Prepare the demod, load the firmware, cleanup after load */
/* Init PLL */
cx24116_writereg(state, 0 xE5, 0 x00);
cx24116_writereg(state, 0 xF1, 0 x08);
cx24116_writereg(state, 0 xF2, 0 x13);
/* Start PLL */
cx24116_writereg(state, 0 xe0, 0 x03);
cx24116_writereg(state, 0 xe0, 0 x00);
/* Unknown */
cx24116_writereg(state, CX24116_REG_CLKDIV, 0 x46);
cx24116_writereg(state, CX24116_REG_RATEDIV, 0 x00);
/* Unknown */
cx24116_writereg(state, 0 xF0, 0 x03);
cx24116_writereg(state, 0 xF4, 0 x81);
cx24116_writereg(state, 0 xF5, 0 x00);
cx24116_writereg(state, 0 xF6, 0 x00);
/* Split firmware to the max I2C write len and write.
* Writes whole firmware as one write when i2c_wr_max is set to 0. */
if (state->config->i2c_wr_max)
max = state->config->i2c_wr_max;
else
max = INT_MAX; /* enough for 32k firmware */
for (remaining = fw->size; remaining > 0 ; remaining -= max - 1 ) {
len = remaining;
if (len > max - 1 )
len = max - 1 ;
cx24116_writeregN(state, 0 xF7, &fw->data[fw->size - remaining],
len);
}
cx24116_writereg(state, 0 xF4, 0 x10);
cx24116_writereg(state, 0 xF0, 0 x00);
cx24116_writereg(state, 0 xF8, 0 x06);
/* Firmware CMD 10: VCO config */
cmd.args[0 x00] = CMD_SET_VCO;
cmd.args[0 x01] = 0 x05;
cmd.args[0 x02] = 0 xdc;
cmd.args[0 x03] = 0 xda;
cmd.args[0 x04] = 0 xae;
cmd.args[0 x05] = 0 xaa;
cmd.args[0 x06] = 0 x04;
cmd.args[0 x07] = 0 x9d;
cmd.args[0 x08] = 0 xfc;
cmd.args[0 x09] = 0 x06;
cmd.len = 0 x0a;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
cx24116_writereg(state, CX24116_REG_SSTATUS, 0 x00);
/* Firmware CMD 14: Tuner config */
cmd.args[0 x00] = CMD_TUNERINIT;
cmd.args[0 x01] = 0 x00;
cmd.args[0 x02] = 0 x00;
cmd.len = 0 x03;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
cx24116_writereg(state, 0 xe5, 0 x00);
/* Firmware CMD 13: MPEG config */
cmd.args[0 x00] = CMD_MPEGCONFIG;
cmd.args[0 x01] = 0 x01;
cmd.args[0 x02] = 0 x75;
cmd.args[0 x03] = 0 x00;
if (state->config->mpg_clk_pos_pol)
cmd.args[0 x04] = state->config->mpg_clk_pos_pol;
else
cmd.args[0 x04] = 0 x02;
cmd.args[0 x05] = 0 x00;
cmd.len = 0 x06;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
/* Firmware CMD 35: Get firmware version */
cmd.args[0 x00] = CMD_UPDFWVERS;
cmd.len = 0 x02;
for (i = 0 ; i < 4 ; i++) {
cmd.args[0 x01] = i;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
vers[i] = cx24116_readreg(state, CX24116_REG_MAILBOX);
}
printk(KERN_INFO "%s: FW version %i.%i.%i.%i\n" , __func__,
vers[0 ], vers[1 ], vers[2 ], vers[3 ]);
return 0 ;
}
static int cx24116_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct cx24116_state *state = fe->demodulator_priv;
int lock = cx24116_readreg(state, CX24116_REG_SSTATUS) &
CX24116_STATUS_MASK;
dprintk("%s: status = 0x%02x\n" , __func__, lock);
*status = 0 ;
if (lock & CX24116_HAS_SIGNAL)
*status |= FE_HAS_SIGNAL;
if (lock & CX24116_HAS_CARRIER)
*status |= FE_HAS_CARRIER;
if (lock & CX24116_HAS_VITERBI)
*status |= FE_HAS_VITERBI;
if (lock & CX24116_HAS_SYNCLOCK)
*status |= FE_HAS_SYNC | FE_HAS_LOCK;
return 0 ;
}
static int cx24116_read_ber(struct dvb_frontend *fe, u32 *ber)
{
struct cx24116_state *state = fe->demodulator_priv;
dprintk("%s()\n" , __func__);
*ber = (cx24116_readreg(state, CX24116_REG_BER24) << 24 ) |
(cx24116_readreg(state, CX24116_REG_BER16) << 16 ) |
(cx24116_readreg(state, CX24116_REG_BER8) << 8 ) |
cx24116_readreg(state, CX24116_REG_BER0);
return 0 ;
}
/* TODO Determine function and scale appropriately */
static int cx24116_read_signal_strength(struct dvb_frontend *fe,
u16 *signal_strength)
{
struct cx24116_state *state = fe->demodulator_priv;
struct cx24116_cmd cmd;
int ret;
u16 sig_reading;
dprintk("%s()\n" , __func__);
/* Firmware CMD 19: Get AGC */
cmd.args[0 x00] = CMD_GETAGC;
cmd.len = 0 x01;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
sig_reading =
(cx24116_readreg(state,
CX24116_REG_SSTATUS) & CX24116_SIGNAL_MASK) |
(cx24116_readreg(state, CX24116_REG_SIGNAL) << 6 );
*signal_strength = 0 - sig_reading;
dprintk("%s: raw / cooked = 0x%04x / 0x%04x\n" ,
__func__, sig_reading, *signal_strength);
return 0 ;
}
/* SNR (0..100)% = (sig & 0xf0) * 10 + (sig & 0x0f) * 10 / 16 */
static int cx24116_read_snr_pct(struct dvb_frontend *fe, u16 *snr)
{
struct cx24116_state *state = fe->demodulator_priv;
u8 snr_reading;
int ret;
static const u32 snr_tab[] = { /* 10 x Table (rounded up) */
0 x00000, 0 x0199A, 0 x03333, 0 x04ccD, 0 x06667,
0 x08000, 0 x0999A, 0 x0b333, 0 x0cccD, 0 x0e667,
0 x10000, 0 x1199A, 0 x13333, 0 x14ccD, 0 x16667,
0 x18000 };
dprintk("%s()\n" , __func__);
ret = cx24116_readreg(state, CX24116_REG_QUALITY0);
if (ret < 0 )
return ret;
snr_reading = ret;
if (snr_reading >= 0 xa0 /* 100% */)
*snr = 0 xffff;
else
*snr = snr_tab[(snr_reading & 0 xf0) >> 4 ] +
(snr_tab[(snr_reading & 0 x0f)] >> 4 );
dprintk("%s: raw / cooked = 0x%02x / 0x%04x\n" , __func__,
snr_reading, *snr);
return 0 ;
}
/* The reelbox patches show the value in the registers represents
* ESNO , from 0 - > 30 db ( values 0 - > 300 ) . We provide this value by
* default .
*/
static int cx24116_read_snr_esno(struct dvb_frontend *fe, u16 *snr)
{
struct cx24116_state *state = fe->demodulator_priv;
dprintk("%s()\n" , __func__);
*snr = cx24116_readreg(state, CX24116_REG_QUALITY8) << 8 |
cx24116_readreg(state, CX24116_REG_QUALITY0);
dprintk("%s: raw 0x%04x\n" , __func__, *snr);
return 0 ;
}
static int cx24116_read_snr(struct dvb_frontend *fe, u16 *snr)
{
if (esno_snr == 1 )
return cx24116_read_snr_esno(fe, snr);
else
return cx24116_read_snr_pct(fe, snr);
}
static int cx24116_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
struct cx24116_state *state = fe->demodulator_priv;
dprintk("%s()\n" , __func__);
*ucblocks = (cx24116_readreg(state, CX24116_REG_UCB8) << 8 ) |
cx24116_readreg(state, CX24116_REG_UCB0);
return 0 ;
}
/* Overwrite the current tuning params, we are about to tune */
static void cx24116_clone_params(struct dvb_frontend *fe)
{
struct cx24116_state *state = fe->demodulator_priv;
state->dcur = state->dnxt;
}
/* Wait for LNB */
static int cx24116_wait_for_lnb(struct dvb_frontend *fe)
{
struct cx24116_state *state = fe->demodulator_priv;
int i;
dprintk("%s() qstatus = 0x%02x\n" , __func__,
cx24116_readreg(state, CX24116_REG_QSTATUS));
/* Wait for up to 300 ms */
for (i = 0 ; i < 30 ; i++) {
if (cx24116_readreg(state, CX24116_REG_QSTATUS) & 0 x20)
return 0 ;
msleep(10 );
}
dprintk("%s(): LNB not ready\n" , __func__);
return -ETIMEDOUT; /* -EBUSY ? */
}
static int cx24116_set_voltage(struct dvb_frontend *fe,
enum fe_sec_voltage voltage)
{
struct cx24116_cmd cmd;
int ret;
dprintk("%s: %s\n" , __func__,
voltage == SEC_VOLTAGE_13 ? "SEC_VOLTAGE_13" :
voltage == SEC_VOLTAGE_18 ? "SEC_VOLTAGE_18" : "??" );
/* Wait for LNB ready */
ret = cx24116_wait_for_lnb(fe);
if (ret != 0 )
return ret;
/* Wait for voltage/min repeat delay */
msleep(100 );
cmd.args[0 x00] = CMD_LNBDCLEVEL;
cmd.args[0 x01] = (voltage == SEC_VOLTAGE_18 ? 0 x01 : 0 x00);
cmd.len = 0 x02;
/* Min delay time before DiSEqC send */
msleep(15 );
return cx24116_cmd_execute(fe, &cmd);
}
static int cx24116_set_tone(struct dvb_frontend *fe,
enum fe_sec_tone_mode tone)
{
struct cx24116_cmd cmd;
int ret;
dprintk("%s(%d)\n" , __func__, tone);
if ((tone != SEC_TONE_ON) && (tone != SEC_TONE_OFF)) {
printk(KERN_ERR "%s: Invalid, tone=%d\n" , __func__, tone);
return -EINVAL;
}
/* Wait for LNB ready */
ret = cx24116_wait_for_lnb(fe);
if (ret != 0 )
return ret;
/* Min delay time after DiSEqC send */
msleep(15 ); /* XXX determine is FW does this, see send_diseqc/burst */
/* Now we set the tone */
cmd.args[0 x00] = CMD_SET_TONE;
cmd.args[0 x01] = 0 x00;
cmd.args[0 x02] = 0 x00;
switch (tone) {
case SEC_TONE_ON:
dprintk("%s: setting tone on\n" , __func__);
cmd.args[0 x03] = 0 x01;
break ;
case SEC_TONE_OFF:
dprintk("%s: setting tone off\n" , __func__);
cmd.args[0 x03] = 0 x00;
break ;
}
cmd.len = 0 x04;
/* Min delay time before DiSEqC send */
msleep(15 ); /* XXX determine is FW does this, see send_diseqc/burst */
return cx24116_cmd_execute(fe, &cmd);
}
/* Initialise DiSEqC */
static int cx24116_diseqc_init(struct dvb_frontend *fe)
{
struct cx24116_state *state = fe->demodulator_priv;
struct cx24116_cmd cmd;
int ret;
/* Firmware CMD 20: LNB/DiSEqC config */
cmd.args[0 x00] = CMD_LNBCONFIG;
cmd.args[0 x01] = 0 x00;
cmd.args[0 x02] = 0 x10;
cmd.args[0 x03] = 0 x00;
cmd.args[0 x04] = 0 x8f;
cmd.args[0 x05] = 0 x28;
cmd.args[0 x06] = (toneburst == CX24116_DISEQC_TONEOFF) ? 0 x00 : 0 x01;
cmd.args[0 x07] = 0 x01;
cmd.len = 0 x08;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
/* Prepare a DiSEqC command */
state->dsec_cmd.args[0 x00] = CMD_LNBSEND;
/* DiSEqC burst */
state->dsec_cmd.args[CX24116_DISEQC_BURST] = CX24116_DISEQC_MINI_A;
/* Unknown */
state->dsec_cmd.args[CX24116_DISEQC_ARG2_2] = 0 x02;
state->dsec_cmd.args[CX24116_DISEQC_ARG3_0] = 0 x00;
/* Continuation flag? */
state->dsec_cmd.args[CX24116_DISEQC_ARG4_0] = 0 x00;
/* DiSEqC message length */
state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] = 0 x00;
/* Command length */
state->dsec_cmd.len = CX24116_DISEQC_MSGOFS;
return 0 ;
}
/* Send DiSEqC message with derived burst (hack) || previous burst */
static int cx24116_send_diseqc_msg(struct dvb_frontend *fe,
struct dvb_diseqc_master_cmd *d)
{
struct cx24116_state *state = fe->demodulator_priv;
int i, ret;
/* Validate length */
if (d->msg_len > sizeof (d->msg))
return -EINVAL;
/* Dump DiSEqC message */
if (debug) {
printk(KERN_INFO "cx24116: %s(" , __func__);
for (i = 0 ; i < d->msg_len ;) {
printk(KERN_INFO "0x%02x" , d->msg[i]);
if (++i < d->msg_len)
printk(KERN_INFO ", " );
}
printk(") toneburst=%d\n" , toneburst);
}
/* DiSEqC message */
for (i = 0 ; i < d->msg_len; i++)
state->dsec_cmd.args[CX24116_DISEQC_MSGOFS + i] = d->msg[i];
/* DiSEqC message length */
state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] = d->msg_len;
/* Command length */
state->dsec_cmd.len = CX24116_DISEQC_MSGOFS +
state->dsec_cmd.args[CX24116_DISEQC_MSGLEN];
/* DiSEqC toneburst */
if (toneburst == CX24116_DISEQC_MESGCACHE)
/* Message is cached */
return 0 ;
else if (toneburst == CX24116_DISEQC_TONEOFF)
/* Message is sent without burst */
state->dsec_cmd.args[CX24116_DISEQC_BURST] = 0 ;
else if (toneburst == CX24116_DISEQC_TONECACHE) {
/*
* Message is sent with derived else cached burst
*
* WRITE PORT GROUP COMMAND 38
*
* 0 / A / A : E0 10 38 F0 . . F3
* 1 / B / B : E0 10 38 F4 . . F7
* 2 / C / A : E0 10 38 F8 . . FB
* 3 / D / B : E0 10 38 FC . . FF
*
* databyte [ 3 ] = 8421 : 8421
* ABCD : WXYZ
* CLR : SET
*
* WX = PORT SELECT 0 . . 3 ( X = TONEBURST )
* Y = VOLTAGE ( 0 = 13 V , 1 = 18 V )
* Z = BAND ( 0 = LOW , 1 = HIGH ( 22 K ) )
*/
if (d->msg_len >= 4 && d->msg[2 ] == 0 x38)
state->dsec_cmd.args[CX24116_DISEQC_BURST] =
((d->msg[3 ] & 4 ) >> 2 );
if (debug)
dprintk("%s burst=%d\n" , __func__,
state->dsec_cmd.args[CX24116_DISEQC_BURST]);
}
/* Wait for LNB ready */
ret = cx24116_wait_for_lnb(fe);
if (ret != 0 )
return ret;
/* Wait for voltage/min repeat delay */
msleep(100 );
/* Command */
ret = cx24116_cmd_execute(fe, &state->dsec_cmd);
if (ret != 0 )
return ret;
/*
* Wait for send
*
* Eutelsat spec :
* > 15 ms delay + ( XXX determine if FW does this , see set_tone )
* 13 . 5 ms per byte +
* > 15 ms delay +
* 12 . 5 ms burst +
* > 15 ms delay ( XXX determine if FW does this , see set_tone )
*/
msleep((state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] << 4 ) +
((toneburst == CX24116_DISEQC_TONEOFF) ? 30 : 60 ));
return 0 ;
}
/* Send DiSEqC burst */
static int cx24116_diseqc_send_burst(struct dvb_frontend *fe,
enum fe_sec_mini_cmd burst)
{
struct cx24116_state *state = fe->demodulator_priv;
int ret;
dprintk("%s(%d) toneburst=%d\n" , __func__, burst, toneburst);
/* DiSEqC burst */
if (burst == SEC_MINI_A)
state->dsec_cmd.args[CX24116_DISEQC_BURST] =
CX24116_DISEQC_MINI_A;
else if (burst == SEC_MINI_B)
state->dsec_cmd.args[CX24116_DISEQC_BURST] =
CX24116_DISEQC_MINI_B;
else
return -EINVAL;
/* DiSEqC toneburst */
if (toneburst != CX24116_DISEQC_MESGCACHE)
/* Burst is cached */
return 0 ;
/* Burst is to be sent with cached message */
/* Wait for LNB ready */
ret = cx24116_wait_for_lnb(fe);
if (ret != 0 )
return ret;
/* Wait for voltage/min repeat delay */
msleep(100 );
/* Command */
ret = cx24116_cmd_execute(fe, &state->dsec_cmd);
if (ret != 0 )
return ret;
/*
* Wait for send
*
* Eutelsat spec :
* > 15 ms delay + ( XXX determine if FW does this , see set_tone )
* 13 . 5 ms per byte +
* > 15 ms delay +
* 12 . 5 ms burst +
* > 15 ms delay ( XXX determine if FW does this , see set_tone )
*/
msleep((state->dsec_cmd.args[CX24116_DISEQC_MSGLEN] << 4 ) + 60 );
return 0 ;
}
static void cx24116_release(struct dvb_frontend *fe)
{
struct cx24116_state *state = fe->demodulator_priv;
dprintk("%s\n" , __func__);
kfree(state);
}
static const struct dvb_frontend_ops cx24116_ops;
struct dvb_frontend *cx24116_attach(const struct cx24116_config *config,
struct i2c_adapter *i2c)
{
struct cx24116_state *state;
int ret;
dprintk("%s\n" , __func__);
/* allocate memory for the internal state */
state = kzalloc(sizeof (*state), GFP_KERNEL);
if (state == NULL)
return NULL;
state->config = config;
state->i2c = i2c;
/* check if the demod is present */
ret = (cx24116_readreg(state, 0 xFF) << 8 ) |
cx24116_readreg(state, 0 xFE);
if (ret != 0 x0501) {
kfree(state);
printk(KERN_INFO "Invalid probe, probably not a CX24116 device\n" );
return NULL;
}
/* create dvb_frontend */
memcpy(&state->frontend.ops, &cx24116_ops,
sizeof (struct dvb_frontend_ops));
state->frontend.demodulator_priv = state;
return &state->frontend;
}
EXPORT_SYMBOL_GPL(cx24116_attach);
/*
* Initialise or wake up device
*
* Power config will reset and load initial firmware if required
*/
static int cx24116_initfe(struct dvb_frontend *fe)
{
struct cx24116_state *state = fe->demodulator_priv;
struct cx24116_cmd cmd;
int ret;
dprintk("%s()\n" , __func__);
/* Power on */
cx24116_writereg(state, 0 xe0, 0 );
cx24116_writereg(state, 0 xe1, 0 );
cx24116_writereg(state, 0 xea, 0 );
/* Firmware CMD 36: Power config */
cmd.args[0 x00] = CMD_TUNERSLEEP;
cmd.args[0 x01] = 0 ;
cmd.len = 0 x02;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
ret = cx24116_diseqc_init(fe);
if (ret != 0 )
return ret;
/* HVR-4000 needs this */
return cx24116_set_voltage(fe, SEC_VOLTAGE_13);
}
/*
* Put device to sleep
*/
static int cx24116_sleep(struct dvb_frontend *fe)
{
struct cx24116_state *state = fe->demodulator_priv;
struct cx24116_cmd cmd;
int ret;
dprintk("%s()\n" , __func__);
/* Firmware CMD 36: Power config */
cmd.args[0 x00] = CMD_TUNERSLEEP;
cmd.args[0 x01] = 1 ;
cmd.len = 0 x02;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
/* Power off (Shutdown clocks) */
cx24116_writereg(state, 0 xea, 0 xff);
cx24116_writereg(state, 0 xe1, 1 );
cx24116_writereg(state, 0 xe0, 1 );
return 0 ;
}
/* dvb-core told us to tune, the tv property cache will be complete,
* it ' s safe for is to pull values and use them for tuning purposes .
*/
static int cx24116_set_frontend(struct dvb_frontend *fe)
{
struct cx24116_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct cx24116_cmd cmd;
enum fe_status tunerstat;
int i, status, ret, retune = 1 ;
dprintk("%s()\n" , __func__);
switch (c->delivery_system) {
case SYS_DVBS:
dprintk("%s: DVB-S delivery system selected\n" , __func__);
/* Only QPSK is supported for DVB-S */
if (c->modulation != QPSK) {
dprintk("%s: unsupported modulation selected (%d)\n" ,
__func__, c->modulation);
return -EOPNOTSUPP;
}
/* Pilot doesn't exist in DVB-S, turn bit off */
state->dnxt.pilot_val = CX24116_PILOT_OFF;
/* DVB-S only supports 0.35 */
if (c->rolloff != ROLLOFF_35) {
dprintk("%s: unsupported rolloff selected (%d)\n" ,
__func__, c->rolloff);
return -EOPNOTSUPP;
}
state->dnxt.rolloff_val = CX24116_ROLLOFF_035;
break ;
case SYS_DVBS2:
dprintk("%s: DVB-S2 delivery system selected\n" , __func__);
/*
* NBC 8 PSK / QPSK with DVB - S is supported for DVB - S2 ,
* but not hardware auto detection
*/
if (c->modulation != PSK_8 && c->modulation != QPSK) {
dprintk("%s: unsupported modulation selected (%d)\n" ,
__func__, c->modulation);
return -EOPNOTSUPP;
}
switch (c->pilot) {
case PILOT_AUTO: /* Not supported but emulated */
state->dnxt.pilot_val = (c->modulation == QPSK)
? CX24116_PILOT_OFF : CX24116_PILOT_ON;
retune++;
break ;
case PILOT_OFF:
state->dnxt.pilot_val = CX24116_PILOT_OFF;
break ;
case PILOT_ON:
state->dnxt.pilot_val = CX24116_PILOT_ON;
break ;
default :
dprintk("%s: unsupported pilot mode selected (%d)\n" ,
__func__, c->pilot);
return -EOPNOTSUPP;
}
switch (c->rolloff) {
case ROLLOFF_20:
state->dnxt.rolloff_val = CX24116_ROLLOFF_020;
break ;
case ROLLOFF_25:
state->dnxt.rolloff_val = CX24116_ROLLOFF_025;
break ;
case ROLLOFF_35:
state->dnxt.rolloff_val = CX24116_ROLLOFF_035;
break ;
case ROLLOFF_AUTO: /* Rolloff must be explicit */
default :
dprintk("%s: unsupported rolloff selected (%d)\n" ,
__func__, c->rolloff);
return -EOPNOTSUPP;
}
break ;
default :
dprintk("%s: unsupported delivery system selected (%d)\n" ,
__func__, c->delivery_system);
return -EOPNOTSUPP;
}
state->dnxt.delsys = c->delivery_system;
state->dnxt.modulation = c->modulation;
state->dnxt.frequency = c->frequency;
state->dnxt.pilot = c->pilot;
state->dnxt.rolloff = c->rolloff;
ret = cx24116_set_inversion(state, c->inversion);
if (ret != 0 )
return ret;
/* FEC_NONE/AUTO for DVB-S2 is not supported and detected here */
ret = cx24116_set_fec(state, c->delivery_system, c->modulation, c->fec_inner);
if (ret != 0 )
return ret;
ret = cx24116_set_symbolrate(state, c->symbol_rate);
if (ret != 0 )
return ret;
/* discard the 'current' tuning parameters and prepare to tune */
cx24116_clone_params(fe);
dprintk("%s: delsys = %d\n" , __func__, state->dcur.delsys);
dprintk("%s: modulation = %d\n" , __func__, state->dcur.modulation);
dprintk("%s: frequency = %d\n" , __func__, state->dcur.frequency);
dprintk("%s: pilot = %d (val = 0x%02x)\n" , __func__,
state->dcur.pilot, state->dcur.pilot_val);
dprintk("%s: retune = %d\n" , __func__, retune);
dprintk("%s: rolloff = %d (val = 0x%02x)\n" , __func__,
state->dcur.rolloff, state->dcur.rolloff_val);
dprintk("%s: symbol_rate = %d\n" , __func__, state->dcur.symbol_rate);
dprintk("%s: FEC = %d (mask/val = 0x%02x/0x%02x)\n" , __func__,
state->dcur.fec, state->dcur.fec_mask, state->dcur.fec_val);
dprintk("%s: Inversion = %d (val = 0x%02x)\n" , __func__,
state->dcur.inversion, state->dcur.inversion_val);
/* This is also done in advise/acquire on HVR4000 but not on LITE */
if (state->config->set_ts_params)
state->config->set_ts_params(fe, 0 );
/* Set/Reset B/W */
cmd.args[0 x00] = CMD_BANDWIDTH;
cmd.args[0 x01] = 0 x01;
cmd.len = 0 x02;
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
return ret;
/* Prepare a tune request */
cmd.args[0 x00] = CMD_TUNEREQUEST;
/* Frequency */
cmd.args[0 x01] = (state->dcur.frequency & 0 xff0000) >> 16 ;
cmd.args[0 x02] = (state->dcur.frequency & 0 x00ff00) >> 8 ;
cmd.args[0 x03] = (state->dcur.frequency & 0 x0000ff);
/* Symbol Rate */
cmd.args[0 x04] = ((state->dcur.symbol_rate / 1000 ) & 0 xff00) >> 8 ;
cmd.args[0 x05] = ((state->dcur.symbol_rate / 1000 ) & 0 x00ff);
/* Automatic Inversion */
cmd.args[0 x06] = state->dcur.inversion_val;
/* Modulation / FEC / Pilot */
cmd.args[0 x07] = state->dcur.fec_val | state->dcur.pilot_val;
cmd.args[0 x08] = CX24116_SEARCH_RANGE_KHZ >> 8 ;
cmd.args[0 x09] = CX24116_SEARCH_RANGE_KHZ & 0 xff;
cmd.args[0 x0a] = 0 x00;
cmd.args[0 x0b] = 0 x00;
cmd.args[0 x0c] = state->dcur.rolloff_val;
cmd.args[0 x0d] = state->dcur.fec_mask;
if (state->dcur.symbol_rate > 30000000 ) {
cmd.args[0 x0e] = 0 x04;
cmd.args[0 x0f] = 0 x00;
cmd.args[0 x10] = 0 x01;
cmd.args[0 x11] = 0 x77;
cmd.args[0 x12] = 0 x36;
cx24116_writereg(state, CX24116_REG_CLKDIV, 0 x44);
cx24116_writereg(state, CX24116_REG_RATEDIV, 0 x01);
} else {
cmd.args[0 x0e] = 0 x06;
cmd.args[0 x0f] = 0 x00;
cmd.args[0 x10] = 0 x00;
cmd.args[0 x11] = 0 xFA;
cmd.args[0 x12] = 0 x24;
cx24116_writereg(state, CX24116_REG_CLKDIV, 0 x46);
cx24116_writereg(state, CX24116_REG_RATEDIV, 0 x00);
}
cmd.len = 0 x13;
/* We need to support pilot and non-pilot tuning in the
* driver automatically . This is a workaround for because
* the demod does not support autodetect .
*/
do {
/* Reset status register */
status = cx24116_readreg(state, CX24116_REG_SSTATUS)
& CX24116_SIGNAL_MASK;
cx24116_writereg(state, CX24116_REG_SSTATUS, status);
/* Tune */
ret = cx24116_cmd_execute(fe, &cmd);
if (ret != 0 )
break ;
/*
* Wait for up to 500 ms before retrying
*
* If we are able to tune then generally it occurs within 100 ms .
* If it takes longer , try a different toneburst setting .
*/
for (i = 0 ; i < 50 ; i++) {
cx24116_read_status(fe, &tunerstat);
status = tunerstat & (FE_HAS_SIGNAL | FE_HAS_SYNC);
if (status == (FE_HAS_SIGNAL | FE_HAS_SYNC)) {
dprintk("%s: Tuned\n" , __func__);
goto tuned;
}
msleep(10 );
}
dprintk("%s: Not tuned\n" , __func__);
/* Toggle pilot bit when in auto-pilot */
if (state->dcur.pilot == PILOT_AUTO)
cmd.args[0 x07] ^= CX24116_PILOT_ON;
} while (--retune);
tuned: /* Set/Reset B/W */
cmd.args[0 x00] = CMD_BANDWIDTH;
cmd.args[0 x01] = 0 x00;
cmd.len = 0 x02;
return cx24116_cmd_execute(fe, &cmd);
}
static int cx24116_tune(struct dvb_frontend *fe, bool re_tune,
unsigned int mode_flags, unsigned int *delay, enum fe_status *status)
{
/*
* It is safe to discard " params " here , as the DVB core will sync
* fe - > dtv_property_cache with fepriv - > parameters_in , where the
* DVBv3 params are stored . The only practical usage for it indicate
* that re - tuning is needed , e . g . ( fepriv - > state & FESTATE_RETUNE ) is
* true .
*/
*delay = HZ / 5 ;
if (re_tune) {
int ret = cx24116_set_frontend(fe);
if (ret)
return ret;
}
return cx24116_read_status(fe, status);
}
static enum dvbfe_algo cx24116_get_algo(struct dvb_frontend *fe)
{
return DVBFE_ALGO_HW;
}
static const struct dvb_frontend_ops cx24116_ops = {
.delsys = { SYS_DVBS, SYS_DVBS2 },
.info = {
.name = "Conexant CX24116/CX24118" ,
.frequency_min_hz = 950 * MHz,
.frequency_max_hz = 2150 * MHz,
.frequency_stepsize_hz = 1011 * kHz,
.frequency_tolerance_hz = 5 * MHz,
.symbol_rate_min = 1000000 ,
.symbol_rate_max = 45000000 ,
.caps = FE_CAN_INVERSION_AUTO |
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_2G_MODULATION |
FE_CAN_QPSK | FE_CAN_RECOVER
},
.release = cx24116_release,
.init = cx24116_initfe,
.sleep = cx24116_sleep,
.read_status = cx24116_read_status,
.read_ber = cx24116_read_ber,
.read_signal_strength = cx24116_read_signal_strength,
.read_snr = cx24116_read_snr,
.read_ucblocks = cx24116_read_ucblocks,
.set_tone = cx24116_set_tone,
.set_voltage = cx24116_set_voltage,
.diseqc_send_master_cmd = cx24116_send_diseqc_msg,
.diseqc_send_burst = cx24116_diseqc_send_burst,
.get_frontend_algo = cx24116_get_algo,
.tune = cx24116_tune,
.set_frontend = cx24116_set_frontend,
};
MODULE_DESCRIPTION("DVB Frontend module for Conexant cx24116/cx24118 hardware" );
MODULE_AUTHOR("Steven Toth" );
MODULE_LICENSE("GPL" );
Messung V0.5 in Prozent C=93 H=97 G=94
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