Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 558 insertions, 0 deletions

diff --git a/drivers/media/video/mt20xx.c b/drivers/media/video/mt20xx.c
new file mode 100644
index 000000000000..95ad17b7f38e
--- /dev/null
+++ b/drivers/media/video/mt20xx.c
@@ -0,0 +1,558 @@
+/*
+ * $Id: mt20xx.c,v 1.4 2005/03/04 09:24:56 kraxel Exp $
+ *
+ * i2c tv tuner chip device driver
+ * controls microtune tuners, mt2032 + mt2050 at the moment.
+ */
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/videodev.h>
+#include <linux/moduleparam.h>
+#include <media/tuner.h>
+
+/* ---------------------------------------------------------------------- */
+
+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 = 0;
+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",
+};
+
+// IsSpurInBand()?
+static int mt2032_spurcheck(struct i2c_client *c,
+			    int f1, int f2, int spectrum_from,int spectrum_to)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+	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 i2c_client *c,
+			       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 tuner *t = i2c_get_clientdata(c);
+        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<0 || lo1a>7 || lo1n<17 ||lo1n>48 || lo2a<0 ||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(c, 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 i2c_client *c)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+	int try,lock=0;
+	unsigned char buf[2];
+
+	for(try=0;try<10;try++) {
+		buf[0]=0x0e;
+		i2c_master_send(c,buf,1);
+		i2c_master_recv(c,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 i2c_client *c,int sel,int lock)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+	unsigned char buf[2];
+	int tad1;
+
+	buf[0]=0x0f;
+	i2c_master_send(c,buf,1);
+	i2c_master_recv(c,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;
+        i2c_master_send(c,buf,2);
+	lock=mt2032_check_lo_lock(c);
+	return lock;
+}
+
+
+static void mt2032_set_if_freq(struct i2c_client *c, 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 tuner *t = i2c_get_clientdata(c);
+
+	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=i2c_master_send(c,buf,1);
+        i2c_master_recv(c,buf,21);
+
+	buf[0]=0;
+	ret=mt2032_compute_freq(c,rfin,if1,if2,from,to,&buf[1],&sel,t->xogc);
+	if (ret<0)
+		return;
+
+        // send only the relevant registers per Rev. 1.2
+        buf[0]=0;
+        ret=i2c_master_send(c,buf,4);
+        buf[5]=5;
+        ret=i2c_master_send(c,buf+5,4);
+        buf[11]=11;
+        ret=i2c_master_send(c,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(c);
+
+		if(optimize_vco)
+			lock=mt2032_optimize_vco(c,sel,lock);
+		if(lock==6) break;
+
+		tuner_dbg("mt2032: re-init PLLs by LINT\n");
+		buf[0]=7;
+		buf[1]=0x80 +8+t->xogc; // set LINT to re-init PLLs
+		i2c_master_send(c,buf,2);
+		mdelay(10);
+		buf[1]=8+t->xogc;
+		i2c_master_send(c,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=i2c_master_send(c,buf,2);
+	if (ret!=2)
+		tuner_warn("i2c i/o error: rc == %d (should be 2)\n",ret);
+}
+
+
+static void mt2032_set_tv_freq(struct i2c_client *c, unsigned int freq)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+	int if2,from,to;
+
+	// signal bandwidth and picture carrier
+	if (t->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(c, freq*62500 /* freq*1000*1000/16 */,
+			   1090*1000*1000, if2, from, to);
+}
+
+static void mt2032_set_radio_freq(struct i2c_client *c, unsigned int freq)
+{
+	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 */,
+			   1085*1000*1000,if2,if2,if2);
+}
+
+// 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);
+}
+
+static void mt2050_set_antenna(struct i2c_client *c, unsigned char antenna)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+       unsigned char buf[2];
+       int ret;
+
+       buf[0] = 6;
+       buf[1] = antenna ? 0x11 : 0x10;
+       ret=i2c_master_send(c,buf,2);
+       tuner_dbg("mt2050: enabled antenna connector %d\n", antenna);
+}
+
+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);
+}
+
+static void mt2050_set_tv_freq(struct i2c_client *c, unsigned int freq)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+	unsigned int if2;
+
+	if (t->std & V4L2_STD_525_60) {
+		// NTSC
+                if2 = 45750*1000;
+        } else {
+                // PAL
+                if2 = 38900*1000;
+        }
+	if (V4L2_TUNER_DIGITAL_TV == t->mode) {
+		// DVB (pinnacle 300i)
+		if2 = 36150*1000;
+	}
+	mt2050_set_if_freq(c, freq*62500, if2);
+	mt2050_set_antenna(c, tv_antenna);
+}
+
+static void mt2050_set_radio_freq(struct i2c_client *c, unsigned int freq)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+	int if2 = t->radio_if2;
+
+	mt2050_set_if_freq(c, freq*62500, if2);
+	mt2050_set_antenna(c, radio_antenna);
+}
+
+static int mt2050_init(struct i2c_client *c)
+{
+	struct tuner *t = i2c_get_clientdata(c);
+	unsigned char buf[2];
+	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);
+
+	tuner_dbg("mt2050: sro is %x\n",buf[0]);
+	t->tv_freq    = mt2050_set_tv_freq;
+	t->radio_freq = mt2050_set_radio_freq;
+	return 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;
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */