/*
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
*/
-/* 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>
+#include <linux/moduleparam.h>
#include <linux/init.h>
#include "dvb_frontend.h"
-#include "dvb_functions.h"
-
-static int debug = 0;
-#define dprintk if (debug) printk
-
-
-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
+#include "cx24110.h"
+
+
+struct cx24110_state {
+
+ struct i2c_adapter* i2c;
+
+ struct dvb_frontend_ops ops;
+
+ const struct cx24110_config* config;
+
+ struct dvb_frontend frontend;
+
+ u32 lastber;
+ u32 lastbler;
+ u32 lastesn0;
};
-/* fixme: are these values correct? especially ..._tolerance and caps */
+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
};
-static int cx24110_writereg (struct dvb_i2c_bus *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->xfer (i2c, &msg, 1)) != 1) {
- dprintk ("%s: writereg error (err == %i, reg == 0x%02x, data == 0x%02x)\n", __FUNCTION__, err, reg, data);
+ 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;
}
}
-static u8 cx24110_readreg (struct dvb_i2c_bus *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->xfer (i2c, msg, 2);
-
- if (ret != 2)
- dprintk("%s: readreg error (ret == %i)\n", __FUNCTION__, ret);
-
- return b1[0];
-}
-
-
-static int cx24108_write (struct dvb_i2c_bus *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 dvb_i2c_bus *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);
-
- dvb_delay(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_init (struct dvb_i2c_bus *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 dvb_i2c_bus *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:
}
-static int cx24110_set_fec (struct dvb_i2c_bus *i2c, fe_code_rate_t fec)
+static int cx24110_set_fec (struct cx24110_state* state, fe_code_rate_t fec)
{
/* fixme (low): error handling */
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;
}
-static fe_code_rate_t cx24110_get_fec (struct dvb_i2c_bus *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 {
}
-static int cx24110_set_symbolrate (struct dvb_i2c_bus *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);
/* 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);
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;
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+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)
+ ;
- /* 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 */
+ /* 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 dvb_i2c_bus *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 sendDiSEqCMessage(struct dvb_i2c_bus *i2c, struct dvb_diseqc_master_cmd *pCmd)
+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 < pCmd->msg_len; i++)
- cx24110_writereg(i2c, 0x79 + i, pCmd->msg[i]);
+ for (i = 0; i < cmd->msg_len; 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) | ((pCmd->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 dvb_i2c_bus *i2c = fe->i2c;
- static int lastber=0, lastbyer=0,lastbler=0, lastesn0=0, sum_bler=0;
+ struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv;
- 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);
+ int sync = cx24110_readreg (state, 0x55);
*status = 0;
if (sync & 0x08)
*status |= FE_HAS_CARRIER;
- sync = cx24110_readreg (i2c, 0x08);
+ sync = cx24110_readreg (state, 0x08);
if (sync & 0x40)
*status |= FE_HAS_VITERBI;
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;
+ return 0;
}
- case FE_READ_BER:
+static int cx24110_read_ber(struct dvb_frontend* fe, u32* ber)
{
- u32 *ber = (u32 *) arg;
+ struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv;
- *ber = lastber;
/* fixme (maybe): value range is 16 bit. Scale? */
- break;
+ 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_READ_SIGNAL_STRENGTH:
+ return 0;
+ }
+
+static int cx24110_read_signal_strength(struct dvb_frontend* fe, u16* signal_strength)
{
+ struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv;
+
/* 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;
+ u8 signal = cx24110_readreg (state, 0x27)+128;
+ *signal_strength = (signal << 8) | signal;
+
+ return 0;
}
- case FE_READ_SNR:
+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. */
- *(u16*) arg = lastesn0;
- break;
+ 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;
- case FE_READ_UNCORRECTED_BLOCKS:
+ return 0;
+ }
+
+static int cx24110_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
{
- *(u16*) arg = sum_bler&0xffff;
- sum_bler=0;
- break;
+ 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;
- case FE_SET_FRONTEND:
+ return 0;
+}
+
+static int cx24110_set_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
{
- struct dvb_frontend_parameters *p = arg;
+ struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv;
- 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;
+ 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 */
+
+ return 0;
}
- case FE_GET_FRONTEND:
+static int cx24110_get_frontend(struct dvb_frontend* fe, struct dvb_frontend_parameters *p)
{
- struct dvb_frontend_parameters *p = arg;
+ 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 (i2c, 0x07) & 0x03;
+ 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==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);
+ 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 (i2c, 0x22) & 0x10) ?
+ p->inversion = (cx24110_readreg (state, 0x22) & 0x10) ?
INVERSION_ON : INVERSION_OFF;
- p->u.qpsk.fec_inner = cx24110_get_fec (i2c);
- break;
- }
-
- 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_init (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:
- sendDiSEqCMessage(i2c, (struct dvb_diseqc_master_cmd*) arg);
- return 0;
-
- default:
- return -EOPNOTSUPP;
- };
+ p->u.qpsk.fec_inner = cx24110_get_fec (state);
return 0;
}
-
-static int cx24110_attach (struct dvb_i2c_bus *i2c, void **data)
+static int cx24110_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
{
- u8 sig;
-
- sig=cx24110_readreg (i2c, 0x00);
- if ( sig != 0x5a && sig != 0x69 )
- return -ENODEV;
+ struct cx24110_state *state = (struct cx24110_state*) fe->demodulator_priv;
- return dvb_register_frontend (cx24110_ioctl, i2c, NULL, &cx24110_info);
+ return cx24110_writereg(state,0x76,(cx24110_readreg(state,0x76)&~0x10)|(((tone==SEC_TONE_ON))?0x10:0));
}
-
-static void cx24110_detach (struct dvb_i2c_bus *i2c, void *data)
+static void cx24110_release(struct dvb_frontend* fe)
{
- dvb_unregister_frontend (cx24110_ioctl, i2c);
+ struct cx24110_state* state = (struct cx24110_state*) fe->demodulator_priv;
+ kfree(state);
}
+static struct dvb_frontend_ops cx24110_ops;
-static int __init init_cx24110 (void)
+struct dvb_frontend* cx24110_attach(const struct cx24110_config* config,
+ struct i2c_adapter* i2c)
{
- return dvb_register_i2c_device (THIS_MODULE, cx24110_attach, cx24110_detach);
-}
-
+ struct cx24110_state* state = NULL;
+ int ret;
-static void __exit exit_cx24110 (void)
-{
- dvb_unregister_i2c_device (cx24110_attach);
+ /* 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;
}
+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_init(init_cx24110);
-module_exit(exit_cx24110);
-
+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");
-MODULE_PARM(debug,"i");
+EXPORT_SYMBOL(cx24110_attach);
+EXPORT_SYMBOL(cx24110_pll_write);
git://git.onelab.eu / linux-2.6.git / blobdiff