[PATCH] gspca - ov534: Fix the light frequency filter.

[Jean-Francois Moine <moinejf@free.fr>]

From: Jean-François Moine <moinejf@free.fr>

The exchanges relative to the light frequency filter were adapted
from a description found in a ms-windows driver. It seems that the
registers were the ones of some other sensor.

This patch was done thanks to the documentation of the right
OmniVision sensors.

Note: The light frequency filter is either off or automatic.
The application will see either off or "50Hz" only.

--- a/drivers/media/usb/gspca/ov534.c
+++ b/drivers/media/usb/gspca/ov534.c
@@ -1038,13 +1038,12 @@
 {
 	struct sd *sd = (struct sd *) gspca_dev;
 
-	val = val ? 0x9e : 0x00;
-	if (sd->sensor == SENSOR_OV767x) {
-		sccb_reg_write(gspca_dev, 0x2a, 0x00);
-		if (val)
-			val = 0x9d;	/* insert dummy to 25fps for 50Hz */
-	}
-	sccb_reg_write(gspca_dev, 0x2b, val);
+	if (!val)
+		sccb_reg_write(gspca_dev, 0x13,		/* off */
+				sccb_reg_read(gspca_dev, 0x13) & ~0x20);
+	else
+		sccb_reg_write(gspca_dev, 0x13,		/* auto */
+				sccb_reg_read(gspca_dev, 0x13) | 0x20);
 }
 
 

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