Signed-off-by: Frank Schäfer <fschaefer....@googlemail.com>
---
 drivers/media/usb/gspca/pac7302.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/drivers/media/usb/gspca/pac7302.c 
b/drivers/media/usb/gspca/pac7302.c
index 71fa5a4..2d5c6d83 100644
--- a/drivers/media/usb/gspca/pac7302.c
+++ b/drivers/media/usb/gspca/pac7302.c
@@ -29,6 +29,15 @@
  * Register page 0:
  *
  * Address     Description
+ * 0x02                Red balance control
+ * 0x03                Green balance control
+ * 0x04        Blue balance control
+ *                  Valus are inverted (0=max, 255=min).
+ *                  The Windows driver uses a quadratic approach to map
+ *                  the settable values (0-200) on register values:
+ *                  min=0x80, default=0x40, max=0x20
+ * 0x0f-0x20   Colors, saturation and exposure control
+ * 0xa2-0xab   Brightness, contrast and gamma control
  * 0xb6                Sharpness control (bits 0-4)
  *
  * Register page 1:
-- 
1.7.7

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