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path: root/drivers/media/usb/gspca/pac7302.c
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Diffstat (limited to 'drivers/media/usb/gspca/pac7302.c')
-rw-r--r--drivers/media/usb/gspca/pac7302.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/pac7302.c b/drivers/media/usb/gspca/pac7302.c
index 71fa5a45c2e1..2d5c6d8343a0 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: