예제 #1
0
파일: mt20xx.c 프로젝트: kdave/btrfs-devel
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)
        tuner_dbg("bufs is: %*ph\n", 6, buf);

    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);
}
예제 #2
0
// 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);
}
예제 #3
0
// Initalization as described in "MT203x Programming Procedures", Rev 1.2, Feb.2001
static int mt2032_init(struct i2c_client *c)
{
	struct tuner *t = i2c_get_clientdata(c);
        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=i2c_master_send(c,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=i2c_master_send(c,buf+5,6);

        buf[12]=13;  // Index register 13
        buf[13]=0x32;
        ret=i2c_master_send(c,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;
                i2c_master_send(c,buf,1);
                i2c_master_recv(c,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=i2c_master_send(c,buf,2);
                if (ret!=2)
			tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret);
        } while (xok != 1 );
	t->xogc=xogc;

	t->tv_freq    = mt2032_set_tv_freq;
	t->radio_freq = mt2032_set_radio_freq;
        return(1);
}
예제 #4
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);
}
예제 #5
0
int microtune_init(struct i2c_client *c)
{
	struct tuner *t = i2c_get_clientdata(c);
	char *name;
        unsigned char buf[21];
	int company_code;

	memset(buf,0,sizeof(buf));
	t->tv_freq    = NULL;
	t->radio_freq = NULL;
	name = "unknown";

        i2c_master_send(c,buf,1);
        i2c_master_recv(c,buf,21);
        if (tuner_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 0
	/* seems to cause more problems than it solves ... */
	switch (company_code) {
	case 0x30bf:
	case 0x3cbf:
	case 0x3dbf:
	case 0x4d54:
	case 0x8e81:
	case 0x8e91:
		/* ok (?) */
		break;
	default:
		tuner_warn("tuner: microtune: unknown companycode\n");
		return 0;
	}
#endif

	if (buf[0x13] < ARRAY_SIZE(microtune_part) &&
	    NULL != microtune_part[buf[0x13]])
		name = microtune_part[buf[0x13]];
	switch (buf[0x13]) {
	case MT2032:
		mt2032_init(c);
		break;
	case MT2050:
		mt2050_init(c);
		break;
	default:
		tuner_info("microtune %s found, not (yet?) supported, sorry :-/\n",
			   name);
                return 0;
        }

	strlcpy(c->name, name, sizeof(c->name));
	tuner_info("microtune %s found, OK\n",name);
	return 0;
}
예제 #6
0
static void mt2050_set_if_freq(struct i2c_client *c,unsigned int freq, unsigned int if2)
{
	struct tuner *t = i2c_get_clientdata(c);
	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 (tuner_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 (tuner_debug > 1) {
		int i;
		tuner_dbg("bufs is: ");
		for(i=0;i<6;i++)
			printk("%x ",buf[i]);
		printk("\n");
	}

	ret=i2c_master_send(c,buf,6);
        if (ret!=6)
		tuner_warn("i2c i/o error: rc == %d (should be 6)\n",ret);
}
예제 #7
0
static void tda8290_init_tuner(struct dvb_frontend *fe)
{
	struct tda8290_priv *priv = fe->analog_demod_priv;
	unsigned char tda8275_init[]  = { 0x00, 0x00, 0x00, 0x40, 0xdC, 0x04, 0xAf,
					  0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 };
	unsigned char tda8275a_init[] = { 0x00, 0x00, 0x00, 0x00, 0xdC, 0x05, 0x8b,
					  0x0c, 0x04, 0x20, 0xFF, 0x00, 0x00, 0x4b };
	struct i2c_msg msg = {.addr = priv->tda827x_addr, .flags=0,
			      .buf=tda8275_init, .len = 14};
	if (priv->ver & TDA8275A)
		msg.buf = tda8275a_init;

	tda8290_i2c_bridge(fe, 1);
	i2c_transfer(priv->i2c_props.adap, &msg, 1);
	tda8290_i2c_bridge(fe, 0);
}

/*---------------------------------------------------------------------*/

static void tda829x_release(struct dvb_frontend *fe)
{
	struct tda8290_priv *priv = fe->analog_demod_priv;

	/* only try to release the tuner if we've
	 * attached it from within this module */
	if (priv->ver & (TDA18271 | TDA8275 | TDA8275A))
		if (fe->ops.tuner_ops.release)
			fe->ops.tuner_ops.release(fe);

	kfree(fe->analog_demod_priv);
	fe->analog_demod_priv = NULL;
}

static struct tda18271_config tda829x_tda18271_config = {
	.gate    = TDA18271_GATE_ANALOG,
};

static int tda829x_find_tuner(struct dvb_frontend *fe)
{
	struct tda8290_priv *priv = fe->analog_demod_priv;
	struct analog_demod_ops *analog_ops = &fe->ops.analog_ops;
	int i, ret, tuners_found;
	u32 tuner_addrs;
	u8 data;
	struct i2c_msg msg = { .flags = I2C_M_RD, .buf = &data, .len = 1 };

	if (!analog_ops->i2c_gate_ctrl) {
		printk(KERN_ERR "tda8290: no gate control were provided!\n");

		return -EINVAL;
	}

	analog_ops->i2c_gate_ctrl(fe, 1);

	/* probe for tuner chip */
	tuners_found = 0;
	tuner_addrs = 0;
	for (i = 0x60; i <= 0x63; i++) {
		msg.addr = i;
		ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
		if (ret == 1) {
			tuners_found++;
			tuner_addrs = (tuner_addrs << 8) + i;
		}
	}
	/* if there is more than one tuner, we expect the right one is
	   behind the bridge and we choose the highest address that doesn't
	   give a response now
	 */

	analog_ops->i2c_gate_ctrl(fe, 0);

	if (tuners_found > 1)
		for (i = 0; i < tuners_found; i++) {
			msg.addr = tuner_addrs  & 0xff;
			ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
			if (ret == 1)
				tuner_addrs = tuner_addrs >> 8;
			else
				break;
		}

	if (tuner_addrs == 0) {
		tuner_addrs = 0x60;
		tuner_info("could not clearly identify tuner address, "
			   "defaulting to %x\n", tuner_addrs);
	} else {
		tuner_addrs = tuner_addrs & 0xff;
		tuner_info("setting tuner address to %x\n", tuner_addrs);
	}
	priv->tda827x_addr = tuner_addrs;
	msg.addr = tuner_addrs;

	analog_ops->i2c_gate_ctrl(fe, 1);
	ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);

	if (ret != 1) {
		tuner_warn("tuner access failed!\n");
		analog_ops->i2c_gate_ctrl(fe, 0);
		return -EREMOTEIO;
	}

	if ((data == 0x83) || (data == 0x84)) {
		priv->ver |= TDA18271;
		tda829x_tda18271_config.config = priv->cfg.config;
		dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
			   priv->i2c_props.adap, &tda829x_tda18271_config);
	} else {
		if ((data & 0x3c) == 0)
			priv->ver |= TDA8275;
		else
			priv->ver |= TDA8275A;

		dvb_attach(tda827x_attach, fe, priv->tda827x_addr,
			   priv->i2c_props.adap, &priv->cfg);
		priv->cfg.switch_addr = priv->i2c_props.addr;
	}
	if (fe->ops.tuner_ops.init)
		fe->ops.tuner_ops.init(fe);

	if (fe->ops.tuner_ops.sleep)
		fe->ops.tuner_ops.sleep(fe);

	analog_ops->i2c_gate_ctrl(fe, 0);

	return 0;
}

static int tda8290_probe(struct tuner_i2c_props *i2c_props)
{
#define TDA8290_ID 0x89
	unsigned char tda8290_id[] = { 0x1f, 0x00 };

	/* detect tda8290 */
	tuner_i2c_xfer_send(i2c_props, &tda8290_id[0], 1);
	tuner_i2c_xfer_recv(i2c_props, &tda8290_id[1], 1);

	if (tda8290_id[1] == TDA8290_ID) {
		if (debug)
			printk(KERN_DEBUG "%s: tda8290 detected @ %d-%04x\n",
			       __func__, i2c_adapter_id(i2c_props->adap),
			       i2c_props->addr);
		return 0;
	}

	return -ENODEV;
}