| /* |
| * i2c tv tuner chip device driver |
| * controls microtune tuners, mt2032 + mt2050 at the moment. |
| * |
| * This "mt20xx" module was split apart from the original "tuner" module. |
| */ |
| #include <linux/delay.h> |
| #include <linux/i2c.h> |
| #include <linux/slab.h> |
| #include <linux/videodev2.h> |
| #include "tuner-i2c.h" |
| #include "mt20xx.h" |
| |
| static int debug; |
| module_param(debug, int, 0644); |
| MODULE_PARM_DESC(debug, "enable verbose debug messages"); |
| |
| /* ---------------------------------------------------------------------- */ |
| |
| static unsigned int optimize_vco = 1; |
| module_param(optimize_vco, int, 0644); |
| |
| static unsigned int tv_antenna = 1; |
| module_param(tv_antenna, int, 0644); |
| |
| static unsigned int radio_antenna; |
| module_param(radio_antenna, int, 0644); |
| |
| /* ---------------------------------------------------------------------- */ |
| |
| #define MT2032 0x04 |
| #define MT2030 0x06 |
| #define MT2040 0x07 |
| #define MT2050 0x42 |
| |
| static char *microtune_part[] = { |
| [ MT2030 ] = "MT2030", |
| [ MT2032 ] = "MT2032", |
| [ MT2040 ] = "MT2040", |
| [ MT2050 ] = "MT2050", |
| }; |
| |
| struct microtune_priv { |
| struct tuner_i2c_props i2c_props; |
| |
| unsigned int xogc; |
| //unsigned int radio_if2; |
| |
| u32 frequency; |
| }; |
| |
| static int microtune_release(struct dvb_frontend *fe) |
| { |
| kfree(fe->tuner_priv); |
| fe->tuner_priv = NULL; |
| |
| return 0; |
| } |
| |
| static int microtune_get_frequency(struct dvb_frontend *fe, u32 *frequency) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| *frequency = priv->frequency; |
| return 0; |
| } |
| |
| // IsSpurInBand()? |
| static int mt2032_spurcheck(struct dvb_frontend *fe, |
| int f1, int f2, int spectrum_from,int spectrum_to) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| int n1=1,n2,f; |
| |
| f1=f1/1000; //scale to kHz to avoid 32bit overflows |
| f2=f2/1000; |
| spectrum_from/=1000; |
| spectrum_to/=1000; |
| |
| tuner_dbg("spurcheck f1=%d f2=%d from=%d to=%d\n", |
| f1,f2,spectrum_from,spectrum_to); |
| |
| do { |
| n2=-n1; |
| f=n1*(f1-f2); |
| do { |
| n2--; |
| f=f-f2; |
| tuner_dbg("spurtest n1=%d n2=%d ftest=%d\n",n1,n2,f); |
| |
| if( (f>spectrum_from) && (f<spectrum_to)) |
| tuner_dbg("mt2032 spurcheck triggered: %d\n",n1); |
| } while ( (f>(f2-spectrum_to)) || (n2>-5)); |
| n1++; |
| } while (n1<5); |
| |
| return 1; |
| } |
| |
| static int mt2032_compute_freq(struct dvb_frontend *fe, |
| unsigned int rfin, |
| unsigned int if1, unsigned int if2, |
| unsigned int spectrum_from, |
| unsigned int spectrum_to, |
| unsigned char *buf, |
| int *ret_sel, |
| unsigned int xogc) //all in Hz |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| unsigned int fref,lo1,lo1n,lo1a,s,sel,lo1freq, desired_lo1, |
| desired_lo2,lo2,lo2n,lo2a,lo2num,lo2freq; |
| |
| fref= 5250 *1000; //5.25MHz |
| desired_lo1=rfin+if1; |
| |
| lo1=(2*(desired_lo1/1000)+(fref/1000)) / (2*fref/1000); |
| lo1n=lo1/8; |
| lo1a=lo1-(lo1n*8); |
| |
| s=rfin/1000/1000+1090; |
| |
| if(optimize_vco) { |
| if(s>1890) sel=0; |
| else if(s>1720) sel=1; |
| else if(s>1530) sel=2; |
| else if(s>1370) sel=3; |
| else sel=4; // >1090 |
| } |
| else { |
| if(s>1790) sel=0; // <1958 |
| else if(s>1617) sel=1; |
| else if(s>1449) sel=2; |
| else if(s>1291) sel=3; |
| else sel=4; // >1090 |
| } |
| *ret_sel=sel; |
| |
| lo1freq=(lo1a+8*lo1n)*fref; |
| |
| tuner_dbg("mt2032: rfin=%d lo1=%d lo1n=%d lo1a=%d sel=%d, lo1freq=%d\n", |
| rfin,lo1,lo1n,lo1a,sel,lo1freq); |
| |
| desired_lo2=lo1freq-rfin-if2; |
| lo2=(desired_lo2)/fref; |
| lo2n=lo2/8; |
| lo2a=lo2-(lo2n*8); |
| lo2num=((desired_lo2/1000)%(fref/1000))* 3780/(fref/1000); //scale to fit in 32bit arith |
| lo2freq=(lo2a+8*lo2n)*fref + lo2num*(fref/1000)/3780*1000; |
| |
| tuner_dbg("mt2032: rfin=%d lo2=%d lo2n=%d lo2a=%d num=%d lo2freq=%d\n", |
| rfin,lo2,lo2n,lo2a,lo2num,lo2freq); |
| |
| if (lo1a > 7 || lo1n < 17 || lo1n > 48 || lo2a > 7 || lo2n < 17 || |
| lo2n > 30) { |
| tuner_info("mt2032: frequency parameters out of range: %d %d %d %d\n", |
| lo1a, lo1n, lo2a,lo2n); |
| return(-1); |
| } |
| |
| mt2032_spurcheck(fe, lo1freq, desired_lo2, spectrum_from, spectrum_to); |
| // should recalculate lo1 (one step up/down) |
| |
| // set up MT2032 register map for transfer over i2c |
| buf[0]=lo1n-1; |
| buf[1]=lo1a | (sel<<4); |
| buf[2]=0x86; // LOGC |
| buf[3]=0x0f; //reserved |
| buf[4]=0x1f; |
| buf[5]=(lo2n-1) | (lo2a<<5); |
| if(rfin >400*1000*1000) |
| buf[6]=0xe4; |
| else |
| buf[6]=0xf4; // set PKEN per rev 1.2 |
| buf[7]=8+xogc; |
| buf[8]=0xc3; //reserved |
| buf[9]=0x4e; //reserved |
| buf[10]=0xec; //reserved |
| buf[11]=(lo2num&0xff); |
| buf[12]=(lo2num>>8) |0x80; // Lo2RST |
| |
| return 0; |
| } |
| |
| static int mt2032_check_lo_lock(struct dvb_frontend *fe) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| int try,lock=0; |
| unsigned char buf[2]; |
| |
| for(try=0;try<10;try++) { |
| buf[0]=0x0e; |
| tuner_i2c_xfer_send(&priv->i2c_props,buf,1); |
| tuner_i2c_xfer_recv(&priv->i2c_props,buf,1); |
| tuner_dbg("mt2032 Reg.E=0x%02x\n",buf[0]); |
| lock=buf[0] &0x06; |
| |
| if (lock==6) |
| break; |
| |
| tuner_dbg("mt2032: pll wait 1ms for lock (0x%2x)\n",buf[0]); |
| udelay(1000); |
| } |
| return lock; |
| } |
| |
| static int mt2032_optimize_vco(struct dvb_frontend *fe,int sel,int lock) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| unsigned char buf[2]; |
| int tad1; |
| |
| buf[0]=0x0f; |
| tuner_i2c_xfer_send(&priv->i2c_props,buf,1); |
| tuner_i2c_xfer_recv(&priv->i2c_props,buf,1); |
| tuner_dbg("mt2032 Reg.F=0x%02x\n",buf[0]); |
| tad1=buf[0]&0x07; |
| |
| if(tad1 ==0) return lock; |
| if(tad1 ==1) return lock; |
| |
| if(tad1==2) { |
| if(sel==0) |
| return lock; |
| else sel--; |
| } |
| else { |
| if(sel<4) |
| sel++; |
| else |
| return lock; |
| } |
| |
| tuner_dbg("mt2032 optimize_vco: sel=%d\n",sel); |
| |
| buf[0]=0x0f; |
| buf[1]=sel; |
| tuner_i2c_xfer_send(&priv->i2c_props,buf,2); |
| lock=mt2032_check_lo_lock(fe); |
| return lock; |
| } |
| |
| |
| static void mt2032_set_if_freq(struct dvb_frontend *fe, unsigned int rfin, |
| unsigned int if1, unsigned int if2, |
| unsigned int from, unsigned int to) |
| { |
| unsigned char buf[21]; |
| int lint_try,ret,sel,lock=0; |
| struct microtune_priv *priv = fe->tuner_priv; |
| |
| tuner_dbg("mt2032_set_if_freq rfin=%d if1=%d if2=%d from=%d to=%d\n", |
| rfin,if1,if2,from,to); |
| |
| buf[0]=0; |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,1); |
| tuner_i2c_xfer_recv(&priv->i2c_props,buf,21); |
| |
| buf[0]=0; |
| ret=mt2032_compute_freq(fe,rfin,if1,if2,from,to,&buf[1],&sel,priv->xogc); |
| if (ret<0) |
| return; |
| |
| // send only the relevant registers per Rev. 1.2 |
| buf[0]=0; |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,4); |
| buf[5]=5; |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,4); |
| buf[11]=11; |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+11,3); |
| if(ret!=3) |
| tuner_warn("i2c i/o error: rc == %d (should be 3)\n",ret); |
| |
| // wait for PLLs to lock (per manual), retry LINT if not. |
| for(lint_try=0; lint_try<2; lint_try++) { |
| lock=mt2032_check_lo_lock(fe); |
| |
| if(optimize_vco) |
| lock=mt2032_optimize_vco(fe,sel,lock); |
| if(lock==6) break; |
| |
| tuner_dbg("mt2032: re-init PLLs by LINT\n"); |
| buf[0]=7; |
| buf[1]=0x80 +8+priv->xogc; // set LINT to re-init PLLs |
| tuner_i2c_xfer_send(&priv->i2c_props,buf,2); |
| mdelay(10); |
| buf[1]=8+priv->xogc; |
| tuner_i2c_xfer_send(&priv->i2c_props,buf,2); |
| } |
| |
| if (lock!=6) |
| tuner_warn("MT2032 Fatal Error: PLLs didn't lock.\n"); |
| |
| buf[0]=2; |
| buf[1]=0x20; // LOGC for optimal phase noise |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2); |
| if (ret!=2) |
| tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret); |
| } |
| |
| |
| static int mt2032_set_tv_freq(struct dvb_frontend *fe, |
| struct analog_parameters *params) |
| { |
| int if2,from,to; |
| |
| // signal bandwidth and picture carrier |
| if (params->std & V4L2_STD_525_60) { |
| // NTSC |
| from = 40750*1000; |
| to = 46750*1000; |
| if2 = 45750*1000; |
| } else { |
| // PAL |
| from = 32900*1000; |
| to = 39900*1000; |
| if2 = 38900*1000; |
| } |
| |
| mt2032_set_if_freq(fe, params->frequency*62500, |
| 1090*1000*1000, if2, from, to); |
| |
| return 0; |
| } |
| |
| static int mt2032_set_radio_freq(struct dvb_frontend *fe, |
| struct analog_parameters *params) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| int if2; |
| |
| if (params->std & V4L2_STD_525_60) { |
| tuner_dbg("pinnacle ntsc\n"); |
| if2 = 41300 * 1000; |
| } else { |
| tuner_dbg("pinnacle pal\n"); |
| if2 = 33300 * 1000; |
| } |
| |
| // per Manual for FM tuning: first if center freq. 1085 MHz |
| mt2032_set_if_freq(fe, params->frequency * 125 / 2, |
| 1085*1000*1000,if2,if2,if2); |
| |
| return 0; |
| } |
| |
| static int mt2032_set_params(struct dvb_frontend *fe, |
| struct analog_parameters *params) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| int ret = -EINVAL; |
| |
| switch (params->mode) { |
| case V4L2_TUNER_RADIO: |
| ret = mt2032_set_radio_freq(fe, params); |
| priv->frequency = params->frequency * 125 / 2; |
| break; |
| case V4L2_TUNER_ANALOG_TV: |
| case V4L2_TUNER_DIGITAL_TV: |
| ret = mt2032_set_tv_freq(fe, params); |
| priv->frequency = params->frequency * 62500; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static const struct dvb_tuner_ops mt2032_tuner_ops = { |
| .set_analog_params = mt2032_set_params, |
| .release = microtune_release, |
| .get_frequency = microtune_get_frequency, |
| }; |
| |
| // Initialization as described in "MT203x Programming Procedures", Rev 1.2, Feb.2001 |
| static int mt2032_init(struct dvb_frontend *fe) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| unsigned char buf[21]; |
| int ret,xogc,xok=0; |
| |
| // Initialize Registers per spec. |
| buf[1]=2; // Index to register 2 |
| buf[2]=0xff; |
| buf[3]=0x0f; |
| buf[4]=0x1f; |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+1,4); |
| |
| buf[5]=6; // Index register 6 |
| buf[6]=0xe4; |
| buf[7]=0x8f; |
| buf[8]=0xc3; |
| buf[9]=0x4e; |
| buf[10]=0xec; |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+5,6); |
| |
| buf[12]=13; // Index register 13 |
| buf[13]=0x32; |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf+12,2); |
| |
| // Adjust XOGC (register 7), wait for XOK |
| xogc=7; |
| do { |
| tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07); |
| mdelay(10); |
| buf[0]=0x0e; |
| tuner_i2c_xfer_send(&priv->i2c_props,buf,1); |
| tuner_i2c_xfer_recv(&priv->i2c_props,buf,1); |
| xok=buf[0]&0x01; |
| tuner_dbg("mt2032: xok = 0x%02x\n",xok); |
| if (xok == 1) break; |
| |
| xogc--; |
| tuner_dbg("mt2032: xogc = 0x%02x\n",xogc&0x07); |
| if (xogc == 3) { |
| xogc=4; // min. 4 per spec |
| break; |
| } |
| buf[0]=0x07; |
| buf[1]=0x88 + xogc; |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,2); |
| if (ret!=2) |
| tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret); |
| } while (xok != 1 ); |
| priv->xogc=xogc; |
| |
| memcpy(&fe->ops.tuner_ops, &mt2032_tuner_ops, sizeof(struct dvb_tuner_ops)); |
| |
| return(1); |
| } |
| |
| static void mt2050_set_antenna(struct dvb_frontend *fe, unsigned char antenna) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| unsigned char buf[2]; |
| |
| buf[0] = 6; |
| buf[1] = antenna ? 0x11 : 0x10; |
| tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); |
| tuner_dbg("mt2050: enabled antenna connector %d\n", antenna); |
| } |
| |
| static void mt2050_set_if_freq(struct dvb_frontend *fe,unsigned int freq, unsigned int if2) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| unsigned int if1=1218*1000*1000; |
| unsigned int f_lo1,f_lo2,lo1,lo2,f_lo1_modulo,f_lo2_modulo,num1,num2,div1a,div1b,div2a,div2b; |
| int ret; |
| unsigned char buf[6]; |
| |
| tuner_dbg("mt2050_set_if_freq freq=%d if1=%d if2=%d\n", |
| freq,if1,if2); |
| |
| f_lo1=freq+if1; |
| f_lo1=(f_lo1/1000000)*1000000; |
| |
| f_lo2=f_lo1-freq-if2; |
| f_lo2=(f_lo2/50000)*50000; |
| |
| lo1=f_lo1/4000000; |
| lo2=f_lo2/4000000; |
| |
| f_lo1_modulo= f_lo1-(lo1*4000000); |
| f_lo2_modulo= f_lo2-(lo2*4000000); |
| |
| num1=4*f_lo1_modulo/4000000; |
| num2=4096*(f_lo2_modulo/1000)/4000; |
| |
| // todo spurchecks |
| |
| div1a=(lo1/12)-1; |
| div1b=lo1-(div1a+1)*12; |
| |
| div2a=(lo2/8)-1; |
| div2b=lo2-(div2a+1)*8; |
| |
| if (debug > 1) { |
| tuner_dbg("lo1 lo2 = %d %d\n", lo1, lo2); |
| tuner_dbg("num1 num2 div1a div1b div2a div2b= %x %x %x %x %x %x\n", |
| num1,num2,div1a,div1b,div2a,div2b); |
| } |
| |
| buf[0]=1; |
| buf[1]= 4*div1b + num1; |
| if(freq<275*1000*1000) buf[1] = buf[1]|0x80; |
| |
| buf[2]=div1a; |
| buf[3]=32*div2b + num2/256; |
| buf[4]=num2-(num2/256)*256; |
| buf[5]=div2a; |
| if(num2!=0) buf[5]=buf[5]|0x40; |
| |
| if (debug > 1) { |
| int i; |
| tuner_dbg("bufs is: "); |
| for(i=0;i<6;i++) |
| printk("%x ",buf[i]); |
| printk("\n"); |
| } |
| |
| ret=tuner_i2c_xfer_send(&priv->i2c_props,buf,6); |
| if (ret!=6) |
| tuner_warn("i2c i/o error: rc == %d (should be 6)\n",ret); |
| } |
| |
| static int mt2050_set_tv_freq(struct dvb_frontend *fe, |
| struct analog_parameters *params) |
| { |
| unsigned int if2; |
| |
| if (params->std & V4L2_STD_525_60) { |
| // NTSC |
| if2 = 45750*1000; |
| } else { |
| // PAL |
| if2 = 38900*1000; |
| } |
| if (V4L2_TUNER_DIGITAL_TV == params->mode) { |
| // DVB (pinnacle 300i) |
| if2 = 36150*1000; |
| } |
| mt2050_set_if_freq(fe, params->frequency*62500, if2); |
| mt2050_set_antenna(fe, tv_antenna); |
| |
| return 0; |
| } |
| |
| static int mt2050_set_radio_freq(struct dvb_frontend *fe, |
| struct analog_parameters *params) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| int if2; |
| |
| if (params->std & V4L2_STD_525_60) { |
| tuner_dbg("pinnacle ntsc\n"); |
| if2 = 41300 * 1000; |
| } else { |
| tuner_dbg("pinnacle pal\n"); |
| if2 = 33300 * 1000; |
| } |
| |
| mt2050_set_if_freq(fe, params->frequency * 125 / 2, if2); |
| mt2050_set_antenna(fe, radio_antenna); |
| |
| return 0; |
| } |
| |
| static int mt2050_set_params(struct dvb_frontend *fe, |
| struct analog_parameters *params) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| int ret = -EINVAL; |
| |
| switch (params->mode) { |
| case V4L2_TUNER_RADIO: |
| ret = mt2050_set_radio_freq(fe, params); |
| priv->frequency = params->frequency * 125 / 2; |
| break; |
| case V4L2_TUNER_ANALOG_TV: |
| case V4L2_TUNER_DIGITAL_TV: |
| ret = mt2050_set_tv_freq(fe, params); |
| priv->frequency = params->frequency * 62500; |
| break; |
| } |
| |
| return ret; |
| } |
| |
| static const struct dvb_tuner_ops mt2050_tuner_ops = { |
| .set_analog_params = mt2050_set_params, |
| .release = microtune_release, |
| .get_frequency = microtune_get_frequency, |
| }; |
| |
| static int mt2050_init(struct dvb_frontend *fe) |
| { |
| struct microtune_priv *priv = fe->tuner_priv; |
| unsigned char buf[2]; |
| |
| buf[0] = 6; |
| buf[1] = 0x10; |
| tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); /* power */ |
| |
| buf[0] = 0x0f; |
| buf[1] = 0x0f; |
| tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); /* m1lo */ |
| |
| buf[0] = 0x0d; |
| tuner_i2c_xfer_send(&priv->i2c_props, buf, 1); |
| tuner_i2c_xfer_recv(&priv->i2c_props, buf, 1); |
| |
| tuner_dbg("mt2050: sro is %x\n", buf[0]); |
| |
| memcpy(&fe->ops.tuner_ops, &mt2050_tuner_ops, sizeof(struct dvb_tuner_ops)); |
| |
| return 0; |
| } |
| |
| struct dvb_frontend *microtune_attach(struct dvb_frontend *fe, |
| struct i2c_adapter* i2c_adap, |
| u8 i2c_addr) |
| { |
| struct microtune_priv *priv = NULL; |
| char *name; |
| unsigned char buf[21]; |
| int company_code; |
| |
| priv = kzalloc(sizeof(struct microtune_priv), GFP_KERNEL); |
| if (priv == NULL) |
| return NULL; |
| fe->tuner_priv = priv; |
| |
| priv->i2c_props.addr = i2c_addr; |
| priv->i2c_props.adap = i2c_adap; |
| priv->i2c_props.name = "mt20xx"; |
| |
| //priv->radio_if2 = 10700 * 1000; /* 10.7MHz - FM radio */ |
| |
| memset(buf,0,sizeof(buf)); |
| |
| name = "unknown"; |
| |
| tuner_i2c_xfer_send(&priv->i2c_props,buf,1); |
| tuner_i2c_xfer_recv(&priv->i2c_props,buf,21); |
| if (debug) { |
| int i; |
| tuner_dbg("MT20xx hexdump:"); |
| for(i=0;i<21;i++) { |
| printk(" %02x",buf[i]); |
| if(((i+1)%8)==0) printk(" "); |
| } |
| printk("\n"); |
| } |
| company_code = buf[0x11] << 8 | buf[0x12]; |
| tuner_info("microtune: companycode=%04x part=%02x rev=%02x\n", |
| company_code,buf[0x13],buf[0x14]); |
| |
| |
| if (buf[0x13] < ARRAY_SIZE(microtune_part) && |
| NULL != microtune_part[buf[0x13]]) |
| name = microtune_part[buf[0x13]]; |
| switch (buf[0x13]) { |
| case MT2032: |
| mt2032_init(fe); |
| break; |
| case MT2050: |
| mt2050_init(fe); |
| break; |
| default: |
| tuner_info("microtune %s found, not (yet?) supported, sorry :-/\n", |
| name); |
| return NULL; |
| } |
| |
| strlcpy(fe->ops.tuner_ops.info.name, name, |
| sizeof(fe->ops.tuner_ops.info.name)); |
| tuner_info("microtune %s found, OK\n",name); |
| return fe; |
| } |
| |
| EXPORT_SYMBOL_GPL(microtune_attach); |
| |
| MODULE_DESCRIPTION("Microtune tuner driver"); |
| MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer"); |
| MODULE_LICENSE("GPL"); |