V4L/DVB: gspca - sq930x: Change the gain value for Micron sensors

The bit 7 of the sensor gain register multiplies the 7bits value by two.
It is now always set with half the user gain value.

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/gspca/sq930x.c b/drivers/media/video/gspca/sq930x.c
index 8032190cd12a77c7accf775d4a9df3aad6f9ba3d..04516b42283a8009881c8fc6f8122355debd641f 100644 (file)
--- a/drivers/media/video/gspca/sq930x.c
+++ b/drivers/media/video/gspca/sq930x.c
@@ -862,7 +862,7 @@ static void setexposure(struct gspca_dev *gspca_dev)
                buf[i++] = 0x35;        /* reg = global gain */
                buf[i++] = 0x00;        /* val H */
                buf[i++] = sensor->i2c_dum;
-               buf[i++] = sd->gain;    /* val L */
+               buf[i++] = 0x80 + sd->gain / 2; /* val L */
                buf[i++] = 0x00;
                buf[i++] = 0x00;
                buf[i++] = 0x00;