+static void
+set_subcarrier_freq (struct i2c_client *client,
+ int pass_through)
+{
+ /* for some reason pass_through NTSC needs
+ * a different sub-carrier freq to remain stable. */
+ if(pass_through)
+ adv7175_write(client, 0x02, 0x00);
+ else
+ adv7175_write(client, 0x02, 0x55);
+
+ adv7175_write(client, 0x03, 0x55);
+ adv7175_write(client, 0x04, 0x55);
+ adv7175_write(client, 0x05, 0x25);
+}
+