[media] xc4000: cut over to using xc5000 version for loading i2c sequences

The xc3028 version does i2c splitting in a different manner than xc4000 and
xc5000, so reuse the xc5000 version of the routine (the key here being that
xc4000 expects the first *two* bytes to be the same for splitting transactions.

Doing it the xc3028 way was resulting in i2c errors partially through the
firmware load.  With this change, it would appear that the entire base firmware
is being loaded successfully (product id now properly shows 0x0FA0).
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/common/tuners/xc4000.c

@@ -691,7 +691,7 @@ static int load_firmware(struct dvb_frontend *fe, unsigned int type,
 {
 	struct xc4000_priv *priv = fe->tuner_priv;
 	int                pos, rc;
-	unsigned char      *p, *endp, buf[XC_MAX_I2C_WRITE_LENGTH];
+	unsigned char      *p;
 
 	printk("%s called\n", __func__);
 
@@ -705,96 +705,11 @@ static int load_firmware(struct dvb_frontend *fe, unsigned int type,
 	       (unsigned long long)*id);
 
 	p = priv->firm[pos].ptr;
-	endp = p + priv->firm[pos].size;
 
-	while (p < endp) {
-		__u16 size;
-
-		printk("block %02x %02x %02x %02x %02x %02x\n", p[0], p[1], p[2], p[3], p[4], p[5]);
-
-		/* Checks if there's enough bytes to read */
-		if (p + sizeof(size) > endp) {
-			printk("Firmware chunk size is wrong\n");
-			return -EINVAL;
-		}
-
-		size = be16_to_cpu(*(__u16 *) p);
-		p += sizeof(size);
-
-		printk("djh size=%x\n", size);
-
-		if (size == 0xffff)
-			return 0;
-
-		if (!size) {
-			/* Special callback command received */
-			rc = xc4000_TunerReset(fe);
-			if (rc != XC_RESULT_SUCCESS) {
-				printk("Error at RESET code %d\n",
-				       (*p) & 0x7f);
-				return -EINVAL;
-			}
-			continue;
-		}
-		if (size >= 0xff00) {
-			switch (size) {
-#ifdef DJH_XXX
-			case 0xff00:
-				rc = do_tuner_callback(fe, XC2028_RESET_CLK, 0);
-				if (rc < 0) {
-					printk("Error at RESET code %d\n",
-						  (*p) & 0x7f);
-					return -EINVAL;
-				}
-				break;
-#endif
-			default:
-				printk("Invalid RESET code %d\n",
-					   size & 0x7f);
-				return -EINVAL;
+	rc = xc_load_i2c_sequence(fe, p);
+	printk("load i2c sequence result=%d\n", rc);
 
-			}
-			continue;
-		}
-
-		/* Checks for a sleep command */
-		if (size & 0x8000) {
-			printk("djh doing msleep for %x\n", (size & 0x7fff));
-			msleep(size & 0x7fff);
-			continue;
-		}
-
-		if ((size + p > endp)) {
-			printk("missing bytes: need %d, have %d\n",
-				   size, (int)(endp - p));
-			return -EINVAL;
-		}
-
-		buf[0] = *p;
-		p++;
-		size--;
-
-		/* Sends message chunks */
-		printk("djh final size %d\n", size);
-		while (size > 0) {
-			int len = (size < XC_MAX_I2C_WRITE_LENGTH - 1) ?
-				   size : XC_MAX_I2C_WRITE_LENGTH - 1;
-
-			memcpy(buf + 1, p, len);
-
-//			rc = i2c_send(priv, buf, len + 1);
-			printk("djh sending %d\n", len + 1);
-			rc = xc_send_i2c_data(priv, buf, len + 1);
-			if (rc < 0) {
-				printk("%d returned from send\n", rc);
-				return -EINVAL;
-			}
-
-			p += len;
-			size -= len;
-		}
-	}
-	return 0;
+	return rc;
 }
 
 //static int load_all_firmwares(struct dvb_frontend *fe)
@@ -1414,7 +1329,7 @@ struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,
 	std0 = 0;
 //	rc = load_firmware(fe, BASE | new_fw.type, &std0);
 	rc = load_firmware(fe, BASE, &std0);
-	if (rc < 0) {
+	if (rc != XC_RESULT_SUCCESS) {
 		tuner_err("Error %d while loading base firmware\n",
 			  rc);
 		goto fail;