From 37bf84d163cddcab88f554aabaacdeb499a0f5ff Mon Sep 17 00:00:00 2001
From: Andrew de Quincy <devnull@localhost>
Date: Wed, 19 Nov 2003 14:11:28 +0000
Subject: Added new module parameter to choose between BER and UCBLOCKs error
 monitoring since the STV0299 can't do both at once (BER is the default)

---
 linux/drivers/media/dvb/frontends/stv0299.c | 75 +++++++++++++++++++----------
 1 file changed, 50 insertions(+), 25 deletions(-)

(limited to 'linux/drivers')

diff --git a/linux/drivers/media/dvb/frontends/stv0299.c b/linux/drivers/media/dvb/frontends/stv0299.c
index 0e36585c8..6d7ae9517 100644
--- a/linux/drivers/media/dvb/frontends/stv0299.c
+++ b/linux/drivers/media/dvb/frontends/stv0299.c
@@ -57,6 +57,11 @@
 #define dprintk(x...)
 #endif
 
+static int stv0299_status = 0;
+
+#define STATUS_BER 0
+#define STATUS_UCBLOCKS 1
+
 
 /* frontend types */
 #define UNKNOWN_FRONTEND       -1
@@ -498,8 +503,8 @@ static int stv0299_init (struct dvb_i2c_bus *i2c, int ftype)
 
 	dprintk("stv0299: init chip\n");
 
-	if(ftype == SAMSUNG_TBMU24112IMB)
-	{
+	switch(ftype) {
+	case SAMSUNG_TBMU24112IMB:
 		dprintk("%s: init stv0299 chip for Samsung TBMU24112IMB\n", __FUNCTION__);
 
 		for (i=0; i<sizeof(init_tab_samsung); i+=2)
@@ -508,26 +513,35 @@ static int stv0299_init (struct dvb_i2c_bus *i2c, int ftype)
 
 			stv0299_writereg (i2c, init_tab_samsung[i], init_tab_samsung[i+1]);
 		}
+		break;
 
-		return 0;	
+	default:
+		stv0299_writereg (i2c, 0x01, 0x15);
+		stv0299_writereg (i2c, 0x02, ftype == PHILIPS_SU1278 ? 0x00 : 0x30);
+		stv0299_writereg (i2c, 0x03, 0x00);
+
+		for (i=0; i<sizeof(init_tab); i+=2)
+			stv0299_writereg (i2c, init_tab[i], init_tab[i+1]);
+
+		/* AGC1 reference register setup */
+		if (ftype == PHILIPS_SU1278SH)
+		  stv0299_writereg (i2c, 0x0f, 0x92);  /* Iagc = Inverse, m1 = 18 */
+		else if (ftype == PHILIPS_SU1278)
+		  stv0299_writereg (i2c, 0x0f, 0x94);  /* Iagc = Inverse, m1 = 20 */
+		else
+		  stv0299_writereg (i2c, 0x0f, 0x52);  /* Iagc = Normal,  m1 = 18 */
+		break;
+	}
+	
+	switch(stv0299_status) {
+	case STATUS_BER:
+		stv0299_writereg(i2c, 0x34, 0x93);
+		break;
+	
+	case STATUS_UCBLOCKS:
+		stv0299_writereg(i2c, 0x34, 0xB3);
+		break;
 	}
-
-	stv0299_writereg (i2c, 0x01, 0x15);
-	stv0299_writereg (i2c, 0x02, ftype == PHILIPS_SU1278 ? 0x00 : 0x30);
-	stv0299_writereg (i2c, 0x03, 0x00);
-
-	for (i=0; i<sizeof(init_tab); i+=2)
-		stv0299_writereg (i2c, init_tab[i], init_tab[i+1]);
-
-        /* AGC1 reference register setup */
-	if (ftype == PHILIPS_SU1278SH)
-	  stv0299_writereg (i2c, 0x0f, 0x92);  /* Iagc = Inverse, m1 = 18 */
-	else if (ftype == PHILIPS_SU1278)
-	  stv0299_writereg (i2c, 0x0f, 0x94);  /* Iagc = Inverse, m1 = 20 */
-	else
-	  stv0299_writereg (i2c, 0x0f, 0x52);  /* Iagc = Normal,  m1 = 18 */
-
-	return 0;
 }
 
 
@@ -906,9 +920,13 @@ static int uni0299_ioctl (struct dvb_frontend *fe, unsigned int cmd, void *arg)
 		break;
 	}
 
-        case FE_READ_BER:
-		*((u32*) arg) = (stv0299_readreg (i2c, 0x1d) << 8)
-			       | stv0299_readreg (i2c, 0x1e);
+	case FE_READ_BER:
+		if (stv0299_status == STATUS_BER) {
+			*((u32*) arg) = (stv0299_readreg (i2c, 0x1d) << 8)
+			               | stv0299_readreg (i2c, 0x1e);
+		} else {
+			*((u32*) arg) = 0;
+		}
 		break;
 
 	case FE_READ_SIGNAL_STRENGTH:
@@ -935,8 +953,13 @@ static int uni0299_ioctl (struct dvb_frontend *fe, unsigned int cmd, void *arg)
 		break;
 	}
 	case FE_READ_UNCORRECTED_BLOCKS: 
-		*((u32*) arg) = 0;    /* the stv0299 can't measure BER and */
-		return -EOPNOTSUPP;   /* errors at the same time.... */
+		if (stv0299_status == STATUS_UCBLOCKS) {
+			*((u32*) arg) = (stv0299_readreg (i2c, 0x1d) << 8)
+			               | stv0299_readreg (i2c, 0x1e);
+		} else {
+			*((u32*) arg) = 0;
+		}
+		break;
 
         case FE_SET_FRONTEND:
         {
@@ -1123,3 +1146,5 @@ MODULE_DESCRIPTION("Universal STV0299/TSA5059/SL1935 DVB Frontend driver");
 MODULE_AUTHOR("Ralph Metzler, Holger Waechtler, Peter Schildmann, Felix Domke, Andreas Oberritter");
 MODULE_LICENSE("GPL");
 
+MODULE_PARM(stv0299_status, "i");
+MODULE_PARM_DESC(stv0299_status, "Which status value to support (0: BER, 1: UCBLOCKS)");
-- 
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