Hi,
this patch autodetects mt2032/mt2050 tuners:
- tested with pinnacle pctv rave PAL-BG
- radio untested
Gerd, please apply. The patch is relative to bttv as found in
linux-2.4.23 because stand-alone bttv-0.7.10x+snapshots oops for me in
i2c routines with this kernel.
Regards, Gunther
--- tuner.c-orig-2.4.23 2003-11-30 14:30:40.000000000 +0100
+++ tuner.c 2003-11-30 18:32:14.000000000 +0100
@@ -59,11 +59,15 @@
// only for MT2032
unsigned int xogc;
unsigned int radio_if2;
+ unsigned int mt_type; // we support 2032 and 2050
};
static struct i2c_driver driver;
static struct i2c_client client_template;
+static int mt2032_init(struct i2c_client *c);
+
+
/* ---------------------------------------------------------------------- */
/* tv standard selection for Temic 4046 FM5
@@ -209,7 +213,7 @@
{ "Samsung PAL TCPM9091PD27", Samsung, PAL, /* from sourceforge v3tv */
16*169,16*464,0xA0,0x90,0x30,0x8e,623},
- { "MT2032 universal", Microtune,PAL|NTSC,
+ { "MT2032/MT2050", Microtune,PAL|NTSC,
0,0,0,0,0,0,0},
{ "Temic PAL_BG (4106 FH5)", TEMIC, PAL,
16*141.00, 16*464.00, 0xa0,0x90,0x30,0x8e,623},
@@ -283,23 +287,55 @@
}
#endif
-// Initalization as described in "MT203x Programming Procedures", Rev 1.2, Feb.2001
-static int mt2032_init(struct i2c_client *c)
+static int mt2050_init(struct i2c_client *c)
+{
+ unsigned char buf[1];
+ int ret;
+
+ buf[0]=6;
+ buf[1]=0x10;
+ ret=i2c_master_send(c,buf,2); // power
+
+ buf[0]=0x0f;
+ buf[1]=0x0f;
+ ret=i2c_master_send(c,buf,2); // m1lo
+
+ buf[0]=0x0d;
+ ret=i2c_master_send(c,buf,1);
+ i2c_master_recv(c,buf,1);
+
+ dprintk("mt2050 sro is %x\n",buf[0]);
+ return 0;
+}
+
+// autodetect MT2032 and MT2050
+static int microtune_init(struct i2c_client *c)
{
unsigned char buf[21];
- int ret,xogc,xok=0;
+ int ret;
struct tuner *t = i2c_get_clientdata(c);
buf[0]=0;
ret=i2c_master_send(c,buf,1);
i2c_master_recv(c,buf,21);
- printk("MT2032: Companycode=%02x%02x Part=%02x Revision=%02x\n",
- buf[0x11],buf[0x12],buf[0x13],buf[0x14]);
-
- if(debug) {
+ // Look for MT2032 id:
+ // part= 0x04(MT2032), 0x06(MT2030), 0x07(MT2040)
+ if((buf[0x11] == 0x4d) && (buf[0x12] == 0x54) && (buf[0x13] == 0x04)) {
+ printk("tuner: MT2032 detected.\n");
+ t->mt_type=2032;
+ }
+ else if(buf[0]==0x42) {
+ printk("tuner: MT2050 detected.\n");
+ t->mt_type=2050;
+ }
+ else {
+ printk("tuner: no MT2032 nor MT2050 detected.\n");
+ t->mt_type=0;
+ }
+ if(debug || t->mt_type==0) {
int i;
- printk("MT2032 hexdump:\n");
+ printk("tuner: MT20xx hexdump:\n");
for(i=0;i<21;i++) {
printk(" %02x",buf[i]);
if(((i+1)%8)==0) printk(" ");
@@ -307,13 +343,24 @@
}
printk("\n ");
}
- // Look for MT2032 id:
- // part= 0x04(MT2032), 0x06(MT2030), 0x07(MT2040)
- if((buf[0x11] != 0x4d) || (buf[0x12] != 0x54) || (buf[0x13] != 0x04)) {
- printk("not a MT2032.\n");
- return 0;
- }
+ if(t->mt_type==0) {
+ printk("tuner: your tuner is not supported.\n");
+ }
+ else if(t->mt_type==2032)
+ mt2032_init(c);
+ else if(t->mt_type==2050)
+ mt2050_init(c);
+ return 0;
+}
+
+// Initalization as described in "MT203x Programming Procedures", Rev 1.2, Feb.2001
+static int mt2032_init(struct i2c_client *c)
+{
+ unsigned char buf[21];
+ int ret,xogc,xok=0;
+ struct tuner *t = i2c_get_clientdata(c);
+ buf[0]=0;
// Initialize Registers per spec.
buf[1]=2; // Index to register 2
@@ -586,6 +633,80 @@
printk("mt2032_set_if_freq2 failed with %d\n",ret);
}
+static void mt2050_set_if_freq(struct i2c_client *c,unsigned int freq, unsigned int if2)
+{
+ 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];
+
+ dprintk("mt2050_set_if_freq freq=%d\n",freq);
+
+ 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;
+
+ dprintk("lo1 lo2 = %d %d\n", lo1, lo2);
+ dprintk("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) {
+ int i;
+ printk("bufs is: ");
+ for(i=0;i<6;i++)
+ printk("%x ",buf[i]);
+ printk("\n");
+ }
+
+ ret=i2c_master_send(c,buf,6);
+ if (ret!=6)
+ printk("mt2050_set_if_freq failed with %d\n",ret);
+}
+
+
+static void mt2050_set_tv_freq(struct i2c_client *c,
+ unsigned int freq, unsigned int norm)
+{
+ unsigned int if2;
+
+ if (norm==VIDEO_MODE_NTSC) {
+ if2=45750*1000;
+ } else {
+ // Pal
+ if2=38900*1000;
+ }
+ mt2050_set_if_freq(c,freq*62500,if2);
+}
static void mt2032_set_tv_freq(struct i2c_client *c,
unsigned int freq, unsigned int norm)
@@ -603,9 +724,19 @@
to=39900*1000;
if2=38900*1000;
}
-
mt2032_set_if_freq(c, freq*62500 /* freq*1000*1000/16 */,
- 1090*1000*1000, if2, from, to);
+ 1090*1000*1000, if2, from, to);
+}
+
+static void microtune_set_tv_freq(struct i2c_client *c,
+ unsigned int freq, unsigned int norm)
+{
+ struct tuner *t = i2c_get_clientdata(c);
+
+ if(t->mt_type==2032)
+ mt2032_set_tv_freq(c,freq,norm);
+ else if(t->mt_type==2050)
+ mt2050_set_tv_freq(c,freq,norm);
}
@@ -624,7 +755,7 @@
return;
}
if (t->type == TUNER_MT2032) {
- mt2032_set_tv_freq(c,freq,t->mode);
+ microtune_set_tv_freq(c,freq,t->mode);
return;
}
@@ -746,9 +877,12 @@
struct tuner *t = i2c_get_clientdata(c);
int if2 = t->radio_if2;
- // per Manual for FM tuning: first if center freq. 1085 MHz
- mt2032_set_if_freq(c, freq*62500 /* freq*1000*1000/16 */,
+ if(t->mt_type==2032)
+ // per Manual for FM tuning: first if center freq. 1085 MHz
+ mt2032_set_if_freq(c, freq*62500 /* freq*1000*1000/16 */,
1085*1000*1000,if2,if2,if2);
+ else if(t->mt_type==2050)
+ mt2050_set_if_freq(c,freq*62500,if2);
}
static void set_radio_freq(struct i2c_client *c, unsigned int freq)
@@ -833,7 +967,7 @@
}
i2c_attach_client(client);
if (t->type == TUNER_MT2032)
- mt2032_init(client);
+ microtune_init(client);
MOD_INC_USE_COUNT;
return 0;
@@ -895,7 +1029,7 @@
t->type,tuners[t->type].name);
strlcpy(client->name, tuners[t->type].name, sizeof(client->name));
if (t->type == TUNER_MT2032)
- mt2032_init(client);
+ microtune_init(client);
break;
case AUDC_SET_RADIO:
if (!t->radio) {
