diff options
Diffstat (limited to 'linux/drivers/media/dvb/frontends/cx24110.c')
| -rw-r--r-- | linux/drivers/media/dvb/frontends/cx24110.c | 757 |
1 files changed, 317 insertions, 440 deletions
diff --git a/linux/drivers/media/dvb/frontends/cx24110.c b/linux/drivers/media/dvb/frontends/cx24110.c index ac4ac26bc..5121a8939 100644 --- a/linux/drivers/media/dvb/frontends/cx24110.c +++ b/linux/drivers/media/dvb/frontends/cx24110.c @@ -1,6 +1,5 @@ /* cx24110 - Single Chip Satellite Channel Receiver driver module - used on the the Pinnacle PCTV Sat cards Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@t-online.de> based on work @@ -23,15 +22,6 @@ */ -/* currently drives the Conexant cx24110 and cx24106 QPSK decoder chips, - connected via i2c to a Conexant Fusion 878 (this uses the standard - linux bttv driver). The tuner chip is supposed to be the Conexant - cx24108 digital satellite tuner, driven through the tuner interface - of the cx24110. SEC is also supplied by the cx24110. - - Oct-2002: Migrate to API V3 (formerly known as NEWSTRUCT) -*/ - #include <linux/slab.h> #include <linux/kernel.h> #include <linux/module.h> @@ -39,44 +29,30 @@ #include <linux/init.h> #include "dvb_frontend.h" +#include "cx24110.h" -#define FRONTEND_NAME "dvbfe_cx24110" -#define dprintk(args...) \ - do { \ - if (debug) printk(KERN_DEBUG FRONTEND_NAME ": " args); \ - } while (0) +struct cx24110_state { -static int debug; + struct i2c_adapter* i2c; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); + struct dvb_frontend_ops ops; + const struct cx24110_config* config; -static struct dvb_frontend_info cx24110_info = { - .name = "Conexant CX24110 with CX24108 tuner, aka HM1221/HM1811", - .type = FE_QPSK, - .frequency_min = 950000, - .frequency_max = 2150000, - .frequency_stepsize = 1011, /* kHz for QPSK frontends, can be reduced - to 253kHz on the cx24108 tuner */ - .frequency_tolerance = 29500, - .symbol_rate_min = 1000000, - .symbol_rate_max = 45000000, -/* .symbol_rate_tolerance = ???,*/ - .notifier_delay = 50, /* 1/20 s */ - .caps = FE_CAN_INVERSION_AUTO | - FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | - FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | - FE_CAN_QPSK | FE_CAN_RECOVER -}; -/* fixme: are these values correct? especially ..._tolerance and caps */ + struct dvb_frontend frontend; -struct cx24110_state { - struct i2c_adapter *i2c; - struct dvb_adapter *dvb; + u32 lastber; + u32 lastbler; + u32 lastesn0; }; +static int debug; +#define dprintk(args...) \ + do { \ + if (debug) printk(KERN_DEBUG "cx24110: " args); \ + } while (0) + static struct {u8 reg; u8 data;} cx24110_regdata[]= /* Comments beginning with @ denote this value should be the default */ @@ -140,15 +116,13 @@ static struct {u8 reg; u8 data;} cx24110_regdata[]= }; -static int cx24110_writereg (struct i2c_adapter *i2c, int reg, int data) +static int cx24110_writereg (struct cx24110_state* state, int reg, int data) { u8 buf [] = { reg, data }; - struct i2c_msg msg = { .addr = 0x55, .flags = 0, .buf = buf, .len = 2 }; -/* fixme (medium): HW allows any i2c address. 0x55 is the default, but the - cx24110 might show up at any address */ + struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 2 }; int err; - if ((err = i2c_transfer(i2c, &msg, 1)) != 1) { + if ((err = i2c_transfer(state->i2c, &msg, 1)) != 1) { dprintk ("%s: writereg error (err == %i, reg == 0x%02x," " data == 0x%02x)\n", __FUNCTION__, err, reg, data); return -EREMOTEIO; @@ -158,161 +132,46 @@ static int cx24110_writereg (struct i2c_adapter *i2c, int reg, int data) } -static u8 cx24110_readreg (struct i2c_adapter *i2c, u8 reg) +static int cx24110_readreg (struct cx24110_state* state, u8 reg) { int ret; u8 b0 [] = { reg }; u8 b1 [] = { 0 }; - struct i2c_msg msg [] = { { .addr = 0x55, .flags = 0, .buf = b0, .len = 1 }, - { .addr = 0x55, .flags = I2C_M_RD, .buf = b1, .len = 1 } }; -/* fixme (medium): address might be different from 0x55 */ - ret = i2c_transfer(i2c, msg, 2); - - if (ret != 2) - dprintk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret); - - return b1[0]; -} - - -static int cx24108_write (struct i2c_adapter *i2c, u32 data) -{ -/* tuner data is 21 bits long, must be left-aligned in data */ -/* tuner cx24108 is written through a dedicated 3wire interface on the demod chip */ -/* FIXME (low): add error handling, avoid infinite loops if HW fails... */ - -dprintk("cx24110 debug: cx24108_write(%8.8x)\n",data); - - cx24110_writereg(i2c,0x6d,0x30); /* auto mode at 62kHz */ - cx24110_writereg(i2c,0x70,0x15); /* auto mode 21 bits */ - /* if the auto tuner writer is still busy, clear it out */ - while (cx24110_readreg(i2c,0x6d)&0x80) - cx24110_writereg(i2c,0x72,0); - /* write the topmost 8 bits */ - cx24110_writereg(i2c,0x72,(data>>24)&0xff); - /* wait for the send to be completed */ - while ((cx24110_readreg(i2c,0x6d)&0xc0)==0x80) - ; - /* send another 8 bytes */ - cx24110_writereg(i2c,0x72,(data>>16)&0xff); - while ((cx24110_readreg(i2c,0x6d)&0xc0)==0x80) - ; - /* and the topmost 5 bits of this byte */ - cx24110_writereg(i2c,0x72,(data>>8)&0xff); - while ((cx24110_readreg(i2c,0x6d)&0xc0)==0x80) - ; - /* now strobe the enable line once */ - cx24110_writereg(i2c,0x6d,0x32); - cx24110_writereg(i2c,0x6d,0x30); - - return 0; -} - - -static int cx24108_set_tv_freq (struct i2c_adapter *i2c, u32 freq) -{ -/* fixme (low): error handling */ - int i, a, n, pump; - u32 band, pll; - - - static const u32 osci[]={ 950000,1019000,1075000,1178000, - 1296000,1432000,1576000,1718000, - 1856000,2036000,2150000}; - static const u32 bandsel[]={0,0x00020000,0x00040000,0x00100800, - 0x00101000,0x00102000,0x00104000, - 0x00108000,0x00110000,0x00120000, - 0x00140000}; - -#define XTAL 1011100 /* Hz, really 1.0111 MHz and a /10 prescaler */ - dprintk("cx24110 debug: cx24108_set_tv_freq, freq=%d\n",freq); - - if (freq<950000) - freq=950000; /* kHz */ - if (freq>2150000) - freq=2150000; /* satellite IF is 950..2150MHz */ - /* decide which VCO to use for the input frequency */ - for (i=1;(i<sizeof(osci)/sizeof(osci[0]))&&(osci[i]<freq);i++) - ; - dprintk("cx24110 debug: select vco #%d (f=%d)\n",i,freq); - band=bandsel[i]; - /* the gain values must be set by SetSymbolrate */ - /* compute the pll divider needed, from Conexant data sheet, - resolved for (n*32+a), remember f(vco) is f(receive) *2 or *4, - depending on the divider bit. It is set to /4 on the 2 lowest - bands */ - n=((i<=2?2:1)*freq*10L)/(XTAL/100); - a=n%32; n/=32; - if (a==0) - n--; - pump=(freq<(osci[i-1]+osci[i])/2); - pll=0xf8000000| - ((pump?1:2)<<(14+11))| - ((n&0x1ff)<<(5+11))| - ((a&0x1f)<<11); - /* everything is shifted left 11 bits to left-align the bits in the - 32bit word. Output to the tuner goes MSB-aligned, after all */ - dprintk("cx24110 debug: pump=%d, n=%d, a=%d\n",pump,n,a); - cx24108_write(i2c,band); - /* set vga and vca to their widest-band settings, as a precaution. - SetSymbolrate might not be called to set this up */ - cx24108_write(i2c,0x500c0000); - cx24108_write(i2c,0x83f1f800); - cx24108_write(i2c,pll); - cx24110_writereg(i2c,0x56,0x7f); - - msleep(10); /* wait a moment for the tuner pll to lock */ - - /* tuner pll lock can be monitored on GPIO pin 4 of cx24110 */ - while (!(cx24110_readreg(i2c,0x66)&0x20)&&i<1000) - i++; - dprintk("cx24110 debug: GPIO IN=%2.2x(loop=%d)\n", - cx24110_readreg(i2c,0x66),i); - return 0; - -} - - -static int cx24110_initfe(struct i2c_adapter *i2c) -{ -/* fixme (low): error handling */ - int i; + 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 } }; - dprintk("%s: init chip\n", __FUNCTION__); + ret = i2c_transfer(state->i2c, msg, 2); - for(i=0;i<sizeof(cx24110_regdata)/sizeof(cx24110_regdata[0]);i++) { - cx24110_writereg(i2c,cx24110_regdata[i].reg,cx24110_regdata[i].data); - }; + if (ret != 2) return ret; - return 0; + return b1[0]; } - -static int cx24110_set_inversion (struct i2c_adapter *i2c, fe_spectral_inversion_t inversion) +static int cx24110_set_inversion (struct cx24110_state* state, fe_spectral_inversion_t inversion) { /* fixme (low): error handling */ switch (inversion) { case INVERSION_OFF: - cx24110_writereg(i2c,0x37,cx24110_readreg(i2c,0x37)|0x1); + cx24110_writereg(state,0x37,cx24110_readreg(state,0x37)|0x1); /* AcqSpectrInvDis on. No idea why someone should want this */ - cx24110_writereg(i2c,0x5,cx24110_readreg(i2c,0x5)&0xf7); + cx24110_writereg(state,0x5,cx24110_readreg(state,0x5)&0xf7); /* Initial value 0 at start of acq */ - cx24110_writereg(i2c,0x22,cx24110_readreg(i2c,0x22)&0xef); + cx24110_writereg(state,0x22,cx24110_readreg(state,0x22)&0xef); /* current value 0 */ /* The cx24110 manual tells us this reg is read-only. But what the heck... set it ayways */ break; case INVERSION_ON: - cx24110_writereg(i2c,0x37,cx24110_readreg(i2c,0x37)|0x1); + cx24110_writereg(state,0x37,cx24110_readreg(state,0x37)|0x1); /* AcqSpectrInvDis on. No idea why someone should want this */ - cx24110_writereg(i2c,0x5,cx24110_readreg(i2c,0x5)|0x08); + cx24110_writereg(state,0x5,cx24110_readreg(state,0x5)|0x08); /* Initial value 1 at start of acq */ - cx24110_writereg(i2c,0x22,cx24110_readreg(i2c,0x22)|0x10); + cx24110_writereg(state,0x22,cx24110_readreg(state,0x22)|0x10); /* current value 1 */ break; case INVERSION_AUTO: - cx24110_writereg(i2c,0x37,cx24110_readreg(i2c,0x37)&0xfe); + cx24110_writereg(state,0x37,cx24110_readreg(state,0x37)&0xfe); /* AcqSpectrInvDis off. Leave initial & current states as is */ break; default: @@ -323,7 +182,7 @@ static int cx24110_set_inversion (struct i2c_adapter *i2c, fe_spectral_inversion } -static int cx24110_set_fec (struct i2c_adapter *i2c, fe_code_rate_t fec) +static int cx24110_set_fec (struct cx24110_state* state, fe_code_rate_t fec) { /* fixme (low): error handling */ @@ -339,27 +198,27 @@ static int cx24110_set_fec (struct i2c_adapter *i2c, fe_code_rate_t fec) fec=FEC_AUTO; if (fec==FEC_AUTO) { /* (re-)establish AutoAcq behaviour */ - cx24110_writereg(i2c,0x37,cx24110_readreg(i2c,0x37)&0xdf); + cx24110_writereg(state,0x37,cx24110_readreg(state,0x37)&0xdf); /* clear AcqVitDis bit */ - cx24110_writereg(i2c,0x18,0xae); + cx24110_writereg(state,0x18,0xae); /* allow all DVB standard code rates */ - cx24110_writereg(i2c,0x05,(cx24110_readreg(i2c,0x05)&0xf0)|0x3); + cx24110_writereg(state,0x05,(cx24110_readreg(state,0x05)&0xf0)|0x3); /* set nominal Viterbi rate 3/4 */ - cx24110_writereg(i2c,0x22,(cx24110_readreg(i2c,0x22)&0xf0)|0x3); + cx24110_writereg(state,0x22,(cx24110_readreg(state,0x22)&0xf0)|0x3); /* set current Viterbi rate 3/4 */ - cx24110_writereg(i2c,0x1a,0x05); cx24110_writereg(i2c,0x1b,0x06); + cx24110_writereg(state,0x1a,0x05); cx24110_writereg(state,0x1b,0x06); /* set the puncture registers for code rate 3/4 */ return 0; } else { - cx24110_writereg(i2c,0x37,cx24110_readreg(i2c,0x37)|0x20); + cx24110_writereg(state,0x37,cx24110_readreg(state,0x37)|0x20); /* set AcqVitDis bit */ if(rate[fec]>0) { - cx24110_writereg(i2c,0x05,(cx24110_readreg(i2c,0x05)&0xf0)|rate[fec]); + cx24110_writereg(state,0x05,(cx24110_readreg(state,0x05)&0xf0)|rate[fec]); /* set nominal Viterbi rate */ - cx24110_writereg(i2c,0x22,(cx24110_readreg(i2c,0x22)&0xf0)|rate[fec]); + cx24110_writereg(state,0x22,(cx24110_readreg(state,0x22)&0xf0)|rate[fec]); /* set current Viterbi rate */ - cx24110_writereg(i2c,0x1a,g1[fec]); - cx24110_writereg(i2c,0x1b,g2[fec]); + cx24110_writereg(state,0x1a,g1[fec]); + cx24110_writereg(state,0x1b,g2[fec]); /* not sure if this is the right way: I always used AutoAcq mode */ } else return -EOPNOTSUPP; @@ -369,11 +228,11 @@ static int cx24110_set_fec (struct i2c_adapter *i2c, fe_code_rate_t fec) } -static fe_code_rate_t cx24110_get_fec (struct i2c_adapter *i2c) +static fe_code_rate_t cx24110_get_fec (struct cx24110_state* state) { int i; - i=cx24110_readreg(i2c,0x22)&0x0f; + i=cx24110_readreg(state,0x22)&0x0f; if(!(i&0x08)) { return FEC_1_2 + i - 1; } else { @@ -386,16 +245,13 @@ static fe_code_rate_t cx24110_get_fec (struct i2c_adapter *i2c) } -static int cx24110_set_symbolrate (struct i2c_adapter *i2c, u32 srate) +static int cx24110_set_symbolrate (struct cx24110_state* state, u32 srate) { /* fixme (low): add error handling */ u32 ratio; u32 tmp, fclk, BDRI; static const u32 bands[]={5000000UL,15000000UL,90999000UL/2}; - static const u32 vca[]={0x80f03800,0x81f0f800,0x83f1f800}; - static const u32 vga[]={0x5f8fc000,0x580f0000,0x500c0000}; - static const u8 filtune[]={0xa2,0xcc,0x66}; int i; dprintk("cx24110 debug: entering %s(%d)\n",__FUNCTION__,srate); @@ -409,22 +265,22 @@ dprintk("cx24110 debug: entering %s(%d)\n",__FUNCTION__,srate); /* first, check which sample rate is appropriate: 45, 60 80 or 90 MHz, and set the PLL accordingly (R07[1:0] Fclk, R06[7:4] PLLmult, R06[3:0] PLLphaseDetGain */ - tmp=cx24110_readreg(i2c,0x07)&0xfc; + tmp=cx24110_readreg(state,0x07)&0xfc; if(srate<90999000UL/4) { /* sample rate 45MHz*/ - cx24110_writereg(i2c,0x07,tmp); - cx24110_writereg(i2c,0x06,0x78); + cx24110_writereg(state,0x07,tmp); + cx24110_writereg(state,0x06,0x78); fclk=90999000UL/2; } else if(srate<60666000UL/2) { /* sample rate 60MHz */ - cx24110_writereg(i2c,0x07,tmp|0x1); - cx24110_writereg(i2c,0x06,0xa5); + cx24110_writereg(state,0x07,tmp|0x1); + cx24110_writereg(state,0x06,0xa5); fclk=60666000UL; } else if(srate<80888000UL/2) { /* sample rate 80MHz */ - cx24110_writereg(i2c,0x07,tmp|0x2); - cx24110_writereg(i2c,0x06,0x87); + cx24110_writereg(state,0x07,tmp|0x2); + cx24110_writereg(state,0x06,0x87); fclk=80888000UL; } else { /* sample rate 90MHz */ - cx24110_writereg(i2c,0x07,tmp|0x3); - cx24110_writereg(i2c,0x06,0x78); + cx24110_writereg(state,0x07,tmp|0x3); + cx24110_writereg(state,0x06,0x78); fclk=90999000UL; }; dprintk("cx24110 debug: fclk %d Hz\n",fclk); @@ -453,318 +309,339 @@ dprintk("cx24110 debug: entering %s(%d)\n",__FUNCTION__,srate); dprintk("fclk = %d\n", fclk); dprintk("ratio= %08x\n", ratio); - cx24110_writereg(i2c, 0x1, (ratio>>16)&0xff); - cx24110_writereg(i2c, 0x2, (ratio>>8)&0xff); - cx24110_writereg(i2c, 0x3, (ratio)&0xff); + cx24110_writereg(state, 0x1, (ratio>>16)&0xff); + cx24110_writereg(state, 0x2, (ratio>>8)&0xff); + cx24110_writereg(state, 0x3, (ratio)&0xff); + + return 0; + +} + - /* please see the cx24108 data sheet, this controls tuner gain - and bandwidth settings depending on the symbol rate */ - cx24108_write(i2c,vga[i]); - cx24108_write(i2c,vca[i]); /* gain is set on tuner chip */ - cx24110_writereg(i2c,0x56,filtune[i]); /* bw is contolled by filtune voltage */ + + + + + + + + + + +int cx24110_pll_write (struct dvb_frontend* fe, u32 data) +{ + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; + +/* tuner data is 21 bits long, must be left-aligned in data */ +/* tuner cx24108 is written through a dedicated 3wire interface on the demod chip */ +/* FIXME (low): add error handling, avoid infinite loops if HW fails... */ + + dprintk("cx24110 debug: cx24108_write(%8.8x)\n",data); + + cx24110_writereg(state,0x6d,0x30); /* auto mode at 62kHz */ + cx24110_writereg(state,0x70,0x15); /* auto mode 21 bits */ + + /* if the auto tuner writer is still busy, clear it out */ + while (cx24110_readreg(state,0x6d)&0x80) + cx24110_writereg(state,0x72,0); + + /* write the topmost 8 bits */ + cx24110_writereg(state,0x72,(data>>24)&0xff); + + /* wait for the send to be completed */ + while ((cx24110_readreg(state,0x6d)&0xc0)==0x80) + ; + + /* send another 8 bytes */ + cx24110_writereg(state,0x72,(data>>16)&0xff); + while ((cx24110_readreg(state,0x6d)&0xc0)==0x80) + ; + + /* and the topmost 5 bits of this byte */ + cx24110_writereg(state,0x72,(data>>8)&0xff); + while ((cx24110_readreg(state,0x6d)&0xc0)==0x80) + ; + + /* now strobe the enable line once */ + cx24110_writereg(state,0x6d,0x32); + cx24110_writereg(state,0x6d,0x30); return 0; +} + + +static int cx24110_initfe(struct dvb_frontend* fe) +{ + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; +/* fixme (low): error handling */ + int i; + + dprintk("%s: init chip\n", __FUNCTION__); + + for(i=0;i<sizeof(cx24110_regdata)/sizeof(cx24110_regdata[0]);i++) { + cx24110_writereg(state, cx24110_regdata[i].reg, cx24110_regdata[i].data); + }; + + if (state->config->pll_init) state->config->pll_init(fe); + + return 0; } -static int cx24110_set_voltage (struct i2c_adapter *i2c, fe_sec_voltage_t voltage) +static int cx24110_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage) { + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; + switch (voltage) { case SEC_VOLTAGE_13: - return cx24110_writereg(i2c,0x76,(cx24110_readreg(i2c,0x76)&0x3b)|0xc0); + return cx24110_writereg(state,0x76,(cx24110_readreg(state,0x76)&0x3b)|0xc0); case SEC_VOLTAGE_18: - return cx24110_writereg(i2c,0x76,(cx24110_readreg(i2c,0x76)&0x3b)|0x40); + return cx24110_writereg(state,0x76,(cx24110_readreg(state,0x76)&0x3b)|0x40); default: return -EINVAL; }; } -static void cx24110_send_diseqc_msg(struct i2c_adapter *i2c, - struct dvb_diseqc_master_cmd *cmd) +static int cx24110_send_diseqc_msg(struct dvb_frontend* fe, + struct dvb_diseqc_master_cmd *cmd) { int i, rv; + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; for (i = 0; i < cmd->msg_len; i++) - cx24110_writereg(i2c, 0x79 + i, cmd->msg[i]); + cx24110_writereg(state, 0x79 + i, cmd->msg[i]); - rv = cx24110_readreg(i2c, 0x76); + rv = cx24110_readreg(state, 0x76); - cx24110_writereg(i2c, 0x76, ((rv & 0x90) | 0x40) | ((cmd->msg_len-3) & 3)); - for (i=500; i-- > 0 && !(cx24110_readreg(i2c,0x76)&0x40);) + cx24110_writereg(state, 0x76, ((rv & 0x90) | 0x40) | ((cmd->msg_len-3) & 3)); + for (i=500; i-- > 0 && !(cx24110_readreg(state,0x76)&0x40);) ; /* wait for LNB ready */ -} + return 0; +} -static int cx24110_ioctl (struct dvb_frontend *fe, unsigned int cmd, void *arg) +static int cx24110_read_status(struct dvb_frontend* fe, fe_status_t* status) { - struct cx24110_state *state = fe->data; - struct i2c_adapter *i2c = state->i2c; - static int lastber=0, lastbyer=0,lastbler=0, lastesn0=0, sum_bler=0; - - switch (cmd) { - case FE_GET_INFO: - memcpy (arg, &cx24110_info, sizeof(struct dvb_frontend_info)); - break; - - case FE_READ_STATUS: - { - fe_status_t *status = arg; - int sync = cx24110_readreg (i2c, 0x55); - - *status = 0; - - if (sync & 0x10) - *status |= FE_HAS_SIGNAL; - - if (sync & 0x08) - *status |= FE_HAS_CARRIER; - - sync = cx24110_readreg (i2c, 0x08); - - if (sync & 0x40) - *status |= FE_HAS_VITERBI; - - if (sync & 0x20) - *status |= FE_HAS_SYNC; - - if ((sync & 0x60) == 0x60) - *status |= FE_HAS_LOCK; - - if(cx24110_readreg(i2c,0x10)&0x40) { - /* the RS error counter has finished one counting window */ - cx24110_writereg(i2c,0x10,0x60); /* select the byer reg */ - lastbyer=cx24110_readreg(i2c,0x12)| - (cx24110_readreg(i2c,0x13)<<8)| - (cx24110_readreg(i2c,0x14)<<16); - cx24110_writereg(i2c,0x10,0x70); /* select the bler reg */ - lastbler=cx24110_readreg(i2c,0x12)| - (cx24110_readreg(i2c,0x13)<<8)| - (cx24110_readreg(i2c,0x14)<<16); - cx24110_writereg(i2c,0x10,0x20); /* start new count window */ - sum_bler += lastbler; - } - if(cx24110_readreg(i2c,0x24)&0x10) { - /* the Viterbi error counter has finished one counting window */ - cx24110_writereg(i2c,0x24,0x04); /* select the ber reg */ - lastber=cx24110_readreg(i2c,0x25)| - (cx24110_readreg(i2c,0x26)<<8); - cx24110_writereg(i2c,0x24,0x04); /* start new count window */ - cx24110_writereg(i2c,0x24,0x14); - } - if(cx24110_readreg(i2c,0x6a)&0x80) { - /* the Es/N0 error counter has finished one counting window */ - lastesn0=cx24110_readreg(i2c,0x69)| - (cx24110_readreg(i2c,0x68)<<8); - cx24110_writereg(i2c,0x6a,0x84); /* start new count window */ - } - break; - } + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; - case FE_READ_BER: - { - u32 *ber = (u32 *) arg; + int sync = cx24110_readreg (state, 0x55); - *ber = lastber; -/* fixme (maybe): value range is 16 bit. Scale? */ - break; - } + *status = 0; - case FE_READ_SIGNAL_STRENGTH: - { -/* no provision in hardware. Read the frontend AGC accumulator. No idea how to scale this, but I know it is 2s complement */ - u8 signal = cx24110_readreg (i2c, 0x27)+128; - *((u16*) arg) = (signal << 8) | signal; - break; - } + if (sync & 0x10) + *status |= FE_HAS_SIGNAL; - case FE_READ_SNR: - { -/* no provision in hardware. Can be computed from the Es/N0 estimator, but I don't know how. */ - *(u16*) arg = lastesn0; - break; - } + if (sync & 0x08) + *status |= FE_HAS_CARRIER; - case FE_READ_UNCORRECTED_BLOCKS: - { - *(u16*) arg = sum_bler&0xffff; - sum_bler=0; - break; - } + sync = cx24110_readreg (state, 0x08); - case FE_SET_FRONTEND: - { - struct dvb_frontend_parameters *p = arg; + if (sync & 0x40) + *status |= FE_HAS_VITERBI; - cx24108_set_tv_freq (i2c, p->frequency); - cx24110_set_inversion (i2c, p->inversion); - cx24110_set_fec (i2c, p->u.qpsk.fec_inner); - cx24110_set_symbolrate (i2c, p->u.qpsk.symbol_rate); - cx24110_writereg(i2c,0x04,0x05); /* start aquisition */ - break; - } + if (sync & 0x20) + *status |= FE_HAS_SYNC; - case FE_GET_FRONTEND: - { - struct dvb_frontend_parameters *p = arg; - s32 afc; unsigned sclk; + if ((sync & 0x60) == 0x60) + *status |= FE_HAS_LOCK; -/* cannot read back tuner settings (freq). Need to have some private storage */ + return 0; +} - sclk = cx24110_readreg (i2c, 0x07) & 0x03; -/* ok, real AFC (FEDR) freq. is afc/2^24*fsamp, fsamp=45/60/80/90MHz. - * Need 64 bit arithmetic. Is thiss possible in the kernel? */ - if (sclk==0) sclk=90999000L/2L; - else if (sclk==1) sclk=60666000L; - else if (sclk==2) sclk=80888000L; - else sclk=90999000L; - sclk>>=8; - afc = sclk*(cx24110_readreg (i2c, 0x44)&0x1f)+ - ((sclk*cx24110_readreg (i2c, 0x45))>>8)+ - ((sclk*cx24110_readreg (i2c, 0x46))>>16); - - p->frequency += afc; - p->inversion = (cx24110_readreg (i2c, 0x22) & 0x10) ? - INVERSION_ON : INVERSION_OFF; - p->u.qpsk.fec_inner = cx24110_get_fec (i2c); - break; +static int cx24110_read_ber(struct dvb_frontend* fe, u32* ber) +{ + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; + + /* fixme (maybe): value range is 16 bit. Scale? */ + if(cx24110_readreg(state,0x24)&0x10) { + /* the Viterbi error counter has finished one counting window */ + cx24110_writereg(state,0x24,0x04); /* select the ber reg */ + state->lastber=cx24110_readreg(state,0x25)| + (cx24110_readreg(state,0x26)<<8); + cx24110_writereg(state,0x24,0x04); /* start new count window */ + cx24110_writereg(state,0x24,0x14); } + *ber = state->lastber; - case FE_SLEEP: -/* cannot do this from the FE end. How to communicate this to the place where it can be done? */ - break; - case FE_INIT: - return cx24110_initfe(i2c); - - case FE_SET_TONE: - return cx24110_writereg(i2c,0x76,(cx24110_readreg(i2c,0x76)&~0x10)|((((fe_sec_tone_mode_t) arg)==SEC_TONE_ON)?0x10:0)); - case FE_SET_VOLTAGE: - return cx24110_set_voltage (i2c, (fe_sec_voltage_t) arg); - - case FE_DISEQC_SEND_MASTER_CMD: - // FIXME Status? - cx24110_send_diseqc_msg(i2c, (struct dvb_diseqc_master_cmd*) arg); - return 0; - - default: - return -EOPNOTSUPP; - }; - - return 0; + return 0; } -static struct i2c_client client_template; - -static int attach_adapter (struct i2c_adapter *adapter) +static int cx24110_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength) { - struct cx24110_state *state; - struct i2c_client *client; - int ret = 0; - u8 sig; - - dprintk("Trying to attach to adapter 0x%x:%s.\n", - adapter->id, adapter->name); - - sig = cx24110_readreg (adapter, 0x00); - if ( sig != 0x5a && sig != 0x69 ) - return -ENODEV; + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; - if ( !(state = kmalloc(sizeof(struct cx24110_state), GFP_KERNEL)) ) - return -ENOMEM; - - memset(state, 0, sizeof(struct cx24110_state)); - state->i2c = adapter; - - if ( !(client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL)) ) { - kfree(state); - return -ENOMEM; - } +/* no provision in hardware. Read the frontend AGC accumulator. No idea how to scale this, but I know it is 2s complement */ + u8 signal = cx24110_readreg (state, 0x27)+128; + *signal_strength = (signal << 8) | signal; - memcpy(client, &client_template, sizeof(struct i2c_client)); - client->adapter = adapter; - client->addr = 0x55; - i2c_set_clientdata(client, state); + return 0; +} - if ((ret = i2c_attach_client(client))) { - kfree(client); - kfree(state); - return ret; +static int cx24110_read_snr(struct dvb_frontend* fe, u16* snr) +{ + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; + + /* no provision in hardware. Can be computed from the Es/N0 estimator, but I don't know how. */ + if(cx24110_readreg(state,0x6a)&0x80) { + /* the Es/N0 error counter has finished one counting window */ + state->lastesn0=cx24110_readreg(state,0x69)| + (cx24110_readreg(state,0x68)<<8); + cx24110_writereg(state,0x6a,0x84); /* start new count window */ } + *snr = state->lastesn0; - BUG_ON(!state->dvb); + return 0; +} - if ((ret = dvb_register_frontend(cx24110_ioctl, state->dvb, state, - &cx24110_info, THIS_MODULE))) { - i2c_detach_client(client); - kfree(client); - kfree(state); - return ret; +static int cx24110_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks) +{ + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; + u32 lastbyer; + + if(cx24110_readreg(state,0x10)&0x40) { + /* the RS error counter has finished one counting window */ + cx24110_writereg(state,0x10,0x60); /* select the byer reg */ + lastbyer=cx24110_readreg(state,0x12)| + (cx24110_readreg(state,0x13)<<8)| + (cx24110_readreg(state,0x14)<<16); + cx24110_writereg(state,0x10,0x70); /* select the bler reg */ + state->lastbler=cx24110_readreg(state,0x12)| + (cx24110_readreg(state,0x13)<<8)| + (cx24110_readreg(state,0x14)<<16); + cx24110_writereg(state,0x10,0x20); /* start new count window */ } + *ucblocks = state->lastbler; return 0; } -static int detach_client (struct i2c_client *client) +static int cx24110_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) { - struct cx24110_state *state = i2c_get_clientdata(client); + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; + + state->config->pll_set(fe, p); + cx24110_set_inversion (state, p->inversion); + cx24110_set_fec (state, p->u.qpsk.fec_inner); + cx24110_set_symbolrate (state, p->u.qpsk.symbol_rate); + cx24110_writereg(state,0x04,0x05); /* start aquisition */ - dvb_unregister_frontend(cx24110_ioctl, state->dvb); - i2c_detach_client(client); - BUG_ON(state->dvb); - kfree(client); - kfree(state); return 0; } -static int command(struct i2c_client *client, unsigned int cmd, void *arg) +static int cx24110_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p) { - struct cx24110_state *state = i2c_get_clientdata(client); - - switch(cmd) { - case FE_REGISTER: - state->dvb = arg; - break; - case FE_UNREGISTER: - state->dvb = NULL; - break; - default: - return -EOPNOTSUPP; - } + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; + s32 afc; unsigned sclk; + +/* cannot read back tuner settings (freq). Need to have some private storage */ + + sclk = cx24110_readreg (state, 0x07) & 0x03; +/* ok, real AFC (FEDR) freq. is afc/2^24*fsamp, fsamp=45/60/80/90MHz. + * Need 64 bit arithmetic. Is thiss possible in the kernel? */ + if (sclk==0) sclk=90999000L/2L; + else if (sclk==1) sclk=60666000L; + else if (sclk==2) sclk=80888000L; + else sclk=90999000L; + sclk>>=8; + afc = sclk*(cx24110_readreg (state, 0x44)&0x1f)+ + ((sclk*cx24110_readreg (state, 0x45))>>8)+ + ((sclk*cx24110_readreg (state, 0x46))>>16); + + p->frequency += afc; + p->inversion = (cx24110_readreg (state, 0x22) & 0x10) ? + INVERSION_ON : INVERSION_OFF; + p->u.qpsk.fec_inner = cx24110_get_fec (state); return 0; } -static struct i2c_driver driver = { - .owner = THIS_MODULE, - .name = FRONTEND_NAME, - .id = I2C_DRIVERID_DVBFE_CX24110, - .flags = I2C_DF_NOTIFY, - .attach_adapter = attach_adapter, - .detach_client = detach_client, - .command = command, -}; +static int cx24110_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone) +{ + struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv; -static struct i2c_client client_template = { - .name = FRONTEND_NAME, - .flags = I2C_CLIENT_ALLOW_USE, - .driver = &driver, -}; + return cx24110_writereg(state,0x76,(cx24110_readreg(state,0x76)&~0x10)|(((tone==SEC_TONE_ON))?0x10:0)); +} -static int __init cx24110_init(void) +static void cx24110_release(struct dvb_frontend* fe) { - return i2c_add_driver(&driver); + struct cx24110_state* state = (struct cx24110_state*) fe->demodulator_priv; + kfree(state); } -static void __exit cx24110_exit(void) +static struct dvb_frontend_ops cx24110_ops; + +struct dvb_frontend* cx24110_attach(const struct cx24110_config* config, + struct i2c_adapter* i2c) { - if (i2c_del_driver(&driver)) - printk(KERN_ERR "cx24110: driver deregistration failed.\n"); + struct cx24110_state* state = NULL; + int ret; + + /* allocate memory for the internal state */ + state = (struct cx24110_state*) kmalloc(sizeof(struct cx24110_state), GFP_KERNEL); + if (state == NULL) goto error; + + /* setup the state */ + state->config = config; + state->i2c = i2c; + memcpy(&state->ops, &cx24110_ops, sizeof(struct dvb_frontend_ops)); + state->lastber = 0; + state->lastbler = 0; + state->lastesn0 = 0; + + /* check if the demod is there */ + ret = cx24110_readreg(state, 0x00); + if ((ret != 0x5a) && (ret != 0x69)) goto error; + + /* create dvb_frontend */ + state->frontend.ops = &state->ops; + state->frontend.demodulator_priv = state; + return &state->frontend; + +error: + if (state) kfree(state); + return NULL; } -module_init(cx24110_init); -module_exit(cx24110_exit); +static struct dvb_frontend_ops cx24110_ops = { + + .info = { + .name = "Conexant CX24110 DVB-S", + .type = FE_QPSK, + .frequency_min = 950000, + .frequency_max = 2150000, + .frequency_stepsize = 1011, /* kHz for QPSK frontends */ + .frequency_tolerance = 29500, + .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_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | + FE_CAN_QPSK | FE_CAN_RECOVER + }, + + .release = cx24110_release, + + .init = cx24110_initfe, + .set_frontend = cx24110_set_frontend, + .get_frontend = cx24110_get_frontend, + .read_status = cx24110_read_status, + .read_ber = cx24110_read_ber, + .read_signal_strength = cx24110_read_signal_strength, + .read_snr = cx24110_read_snr, + .read_ucblocks = cx24110_read_ucblocks, + + .diseqc_send_master_cmd = cx24110_send_diseqc_msg, + .set_tone = cx24110_set_tone, + .set_voltage = cx24110_set_voltage, +}; + +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); -MODULE_DESCRIPTION("DVB Frontend driver module for the Conexant cx24108/cx24110 chipset"); +MODULE_DESCRIPTION("Conexant CX24110 DVB-S Demodulator driver"); MODULE_AUTHOR("Peter Hettkamp"); MODULE_LICENSE("GPL"); +EXPORT_SYMBOL(cx24110_attach); +EXPORT_SYMBOL(cx24110_pll_write); |